Technical field
[0001]
　The present disclosure relates to hot press apparatus for pressing and heating the press object.
BACKGROUND
[0002]
　For example, Japanese Patent Application Publication 2009-142852 (Patent Document 1) and Japanese Patent Application JP 2009-285728 (Patent Document 2), hot pressing apparatus is shown. Between these hot press apparatus includes a heating furnace one group, and press one group, and a transfer device for transferring the press object in the press from the furnace. Thus, the heated steel sheet in a heating furnace is conveyed to the press machine by pressing a press machine realizes a hot press (also referred to as a hot press).
Summary of the Invention
Problems that the Invention is to Solve
[0003]
　However, for the hot-pressed steel sheet with hot press device, while securing the ductility and toughness, further higher strength is required.
[0004]
　The present disclosure further strengthening of the steel sheet, and an object thereof is to provide a hot press device capable of both of ductility and toughness.
Means for Solving the Problems
[0005]
　Hot pressing apparatus to solve the above problems, a first pressing machine, and the second pressing machine, a conveying device that connects the first press and the second press was provided in the transfer range of the said conveying device It includes a heating furnace, a.
Effect of the invention
[0006]
　According to the hot press apparatus of the present disclosure, further strengthening of the steel sheet, it is possible to enable both ductility and toughness.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007]
FIG. 1 is a schematic perspective view of a hot press apparatus according to the first embodiment.
FIG. 2 is a schematic plan view showing a hot pressing apparatus according to the first embodiment.
FIG. 3 is an explanatory view showing from the side the conveying table of the first embodiment.
4 is a schematic plan view showing a hot pressing apparatus according to the second embodiment.
FIG. 5 is a schematic plan view showing a hot pressing apparatus according to the third embodiment.
6 is a schematic plan view showing a hot pressing apparatus according to the fourth embodiment.
7 is an explanatory diagram showing a continuous roller hearth furnace.
8 is an explanatory view showing a multi-stage furnace.
9 is a schematic plan view showing a hot pressing apparatus according to a fifth embodiment.
FIG. 10 is a schematic plan view showing a hot pressing apparatus according to a sixth embodiment.
DESCRIPTION OF THE INVENTION
[0008]
　Hot pressing member having high strength properties is used as the collision corresponding parts of the automobile. The hot pressing parts, to further higher strength, improved ductility and toughness are required.
　To this request, the present inventors have found that the resulting high strength characteristics by repeating a plurality of times heating and cooling cycles.
[0009]
　Conventional hot pressing apparatus is composed of a heating furnace one group, and a press machine Ichiki having a function of cooling the processing object, a conveying device for conveying the pressed object from the furnace to the press .
[0010]
　Hot press forming is easier as compared with the case of forming a high-strength steel sheet cold. Accordingly, by using the hot press forming, it is possible to form a high strength molded article in a single pressing step. Thus, by repeating several times the heating and cooling cycles are not assumed in the conventional hot pressing apparatus.
[0011]
　Further, when repeated several times heating and cooling cycles, it is necessary to temperature control during processing in order to maintain the required properties. However, since hitherto molding method of repeating a plurality of times heating and cooling cycles it has not been investigated, nor is it considered apparatus to achieve this. Accordingly, the present inventors have led to devise the following embodiments.
[0012]
　(First Embodiment)
　Hereinafter, a description will be given of a first embodiment of the present disclosure with reference to the drawings. Figure Nakaoku side arrow A, the upper arrow B, and transverse shown by arrow C.
[0013]
　1 and 2 is a schematic view showing a hot pressing apparatus 10 of the present embodiment, the hot press device 10 comprises a press 12 and press machine 14. In the vicinity of a between the press 12 and the press 14 corners of the press 14, the first manipulator 16 is provided as an example of a transport device which connects the two press 12.
[0014]
　The first manipulator 16 carries the material Z which is constituted of a steel plate, and out into the press machine 12, 14. Therefore, the press machine 12, 14 are arranged in the conveying range of the first manipulator 16. Thus, both the press 12 and 14 are connected by the first manipulator 16.
[0015]
　The first manipulator 16 may be installed on top of the heating furnace 18. Not only the first embodiment, the manipulator may be placed on a heating furnace to handle material Z in and out of the furnace in other embodiments.
[0016]
　The conveying range of the first manipulator 16, the heating furnace 18 is provided. The furnace 18 includes a first pressing machine 12 a between the second pressing machine 14 is disposed on the far side A of the two press 12. Thus, by moving between the material Z and the heating furnace 18 at a first manipulator 16 and the press machine 12, the material Z, between the heating furnace 18 and the press 12, and a heating furnace 18 to move between the press machine 14.
[0017]
　Furnace 18 is a device for heating the material Z to be heat target, the heating furnace 18, a high-frequency heating furnace or a resistance heating furnace, gas furnace or an infrared heating furnace and the like. The heating furnace 18, as shown in FIGS. 1 and 3, and a lid 18E for opening and closing a doorway 18D. The lid 18E is in accordance with the size of the material Z to be, to vary the opening height of the doorway 18D being opened.
[0018]
　The heating furnace 18, as shown in FIG. 3, and a driving unit 18G for rotationally driving the roller 18F provided therein. It may be used electrical heating device in place of the heating furnace as the heating means.
[0019]
　Press 12, as shown in FIGS. 1 and 2, and a hydraulic press machine for press-forming the material Z at a high load. Press 12 is provided with the four pillars 12A, is supporting the ceiling portion 12B in each pillar 12A. The press machine 12, as shown in FIG. 2, is formed in a rectangular shape in plan view, and out of the material Z from each long side. Press 12 is not only a hydraulic press, for example, may be another kind of a press machine such as a servo press. Press the other embodiments is the same.
[0020]
　Inside of each column 12A, as shown in FIG. 1, the upper mold 12C and the lower mold 12D paired is provided. Upper die 12C is driven in the vertical direction relative to the lower mold 12D by the elevating mechanism (not shown). Upper mold 12C and one is convex mold of the lower die 12D (punch), the other is a concave mold corresponding to the convex mold (die).
[0021]
　Thus, press-forming the material Z disposed lower mold 12D in the upper mold 12C. Material Z is cooled in a state sandwiched between the upper mold 12C and the lower mold 12D. Upper mold 12C and the lower mold 12D is provided with a flow path of the refrigerant. Heat taken material Z upon pressing is discharged through the refrigerant.
[0022]
　Press 14 is constituted by a servo motor for fast molding, you can adjust the press speed or the like by controlling the servo motor. Press 14 is provided with the four pillars 14A, is supporting the ceiling portion 14B in each pillar 14A. The press machine 14, as shown in FIG. 2, is formed in a rectangular shape in a plan view, it can be out of material Z from each long side.
[0023]
　Inside of each pillar 14A, pairs upper mold 14C and the lower mold 14D is provided forming a upper mold 14C is driven in the vertical direction relative to the lower mold 14D by the elevating mechanism (not shown) It is. Upper mold 14C and the lower mold 14D is a concave mold which one is convex mold and the other corresponds to one of the convex mold.
[0024]
　Upper mold 14C and the lower mold 14D, except for the mold shape are different, it comprises the upper mold 12C and the lower die 12D and the same function.
[0025]
　Between the two press 12, as shown in FIG. 2, the conveying table 20 is provided. One entrance 12FI which is an example of a spout of the material Z to the press 12 is open to the conveying table 20 side. Also, one of the entrance 14FI which is an example of a spout of the material Z to the press 14 is open to the conveying table 20 side.
[0026]
　Conveying table 20, as shown in FIG. 3, comprises four legs 20A, it is supported by legs 20A ceiling portion 20B is formed in a rectangular frame (see FIG. 1). Within this frame, a cylindrical roller 20C extending in the width direction of the top portion 20B is arranged in plural and in the length direction of the top portion 20B. Each roller 20C is connected to the driving unit 20D, it can be driven to rotate.
[0027]
　Each roller 20C of the conveyor table 20 is disposed at the same height as the rollers 18F in the heating furnace 18 provided on one end side of the conveying table 20. Thus, the conveying table 20 and the heating furnace 18, each roller 20C, by moving on 20F, to move the material Z between the heating furnace 18 and the conveying table 20.
[0028]
　The other end of the conveying table 20, as shown in FIG. 2, the material table 22 is provided. Between the material table 22 and the press 14, the first manipulator 16 is arranged.
[0029]
　The first manipulator 16 includes a turntable 16A, the articulated arm 16B which is rotatably supported on the turntable 16A, and a holding tool 16C which replaceably attached to the arm 16B tip. Material table 22, conveying table 20, the press 12, the press 14, and the heating furnace 18 is provided within the moving range of the material Z by the holding tool 16C. Holding tool 16C includes a suction type holding mechanism for holding by suction the material Z, and a hook-type holding mechanism for holding hook. Instead of hooking type holding mechanism may be composed of a gripping type holding mechanism for holding and gripping.
[0030]
　The first manipulator 16, the controller 24 constituted by an industrial computer or the like is connected. Controller 24, both the press 12 and 14, is also connected to the furnace 18, and the conveying table 20. Thus, the first manipulator 16 and two presses 12, 14 and the heating furnace 18 and the conveying table 20 operates according to an instruction by the control signal outputted from the controller 24.
[0031]
　In the vicinity of the corner portions of the press 12, a second manipulator 26 similar to the first manipulator 16 is provided. In the second manipulator 26, the controller 24 is connected, a second manipulator 26 operates in accordance with an instruction by the control signal from the controller 24.
　The second manipulator 26 is loaded on the linear conveyor (not shown) to discharge the pressed material Z in the press 12 from the other entrance 12FO, the linear transporter material Z fast transported to the next step.
[0032]
　In the vicinity of the corner portions of the press 14, the third manipulator 28 similar to the first manipulator 16 is provided. Is connected to the controller 24 in the third manipulator 28, the third manipulator 28 also operates according to an instruction by the control signal from the controller 24.
　The third manipulator 28 is loaded on the linear conveyor (not shown) to discharge the pressed material Z in the press 14 from the other entrance 14FO, it can be transported by a linear transfer device material Z fast to the next step.
[0033]
　In the present embodiment, the first manipulator 16 has been described as an example of a transport device, but is not limited thereto. For example, it may be configured transport device with a conveyor. In the case of constituting the conveying device by a plurality of manipulators and a conveyor or the like, regarded as one of the transport device if the transport path of the plurality of manipulators and linear conveyor or conveyors are duplicated or connected. On the other hand, if the conveying path by a plurality of manipulators and linear conveyor or conveyors are not duplicated or connected, regarded as a separate transport device. The same applies to the following embodiments.
[0034]
　Conveying path constituting a conveying range, when the conveyor conveyor shall constitute the conveying path. In the case of robot or manipulator, to the movable range of the robot hand and manipulator holding tool 16C and the conveying path. Furthermore, when using a conveyor and manipulator, the movable range of the conveyor and manipulator holding tool 16C and the conveying path. The same applies to the following embodiments.
[0035]
　It will be described step of forming the twice went molded article to heat treatment in the present embodiment according to the above configuration. The controller 24, by operating in accordance with a program stored in a built-in storage medium, each manipulator 26 and 28, each press 12, 14, and outputs a control signal to the heating furnace 18, and the conveying table 20. Each manipulator 26, 28 each press 12, 14, furnace 18, and the conveying table 20 operates according to a control signal from the controller 24.
[0036]
　That is, when forming a shaped article from the blank is previously loaded with material Z (blank) in advance in the material table 22. It starts the operation in accordance with a program controller 24 is stored in this state, and outputs a control signal to the first manipulator 16, the first manipulator 16, material Z loaded on the material table 22 by holding tool 16C of the suction type holding mechanism conveying the conveying table 20 holds the (blank).
[0037]
　Then, the controller 24 outputs a control signal to the heating furnace 18 and the conveying table 20. Then, the heating furnace 18 is adjusted opening height with opening the opening operation and doorway 18D capped 18E according to the size of the material Z (blank) as a heating target.
　The driving unit 18G of the furnace 18 rotates roller 18F together with the driving unit 20D of the conveying table 20 is rotated a roller 20C. Thus, the rollers 18F of the drive unit 20D and the heating furnace 18 of the conveying table 20 accommodates the material Z (blank) into the heating furnace 18 by a roller drive.
[0038]
　In the present embodiment, the material Z of the conveying table 20 (blank) is housed in the heating furnace 18 by the roller 20C of the conveying table 20 and the roller 18F of the furnace 18. Therefore, the conveying table 20 constitutes a containment device to the heating furnace 18, the conveying table 20 can be regarded as part of the heating furnace 18.
[0039]
　Furnace 18 in accordance with a control signal from the controller 24, at a set temperature (e.g., about 1000 ° C.), heated set time (e.g. 4 min) material Z (blank). Then, it discharged to the conveying table 20 the material is heated by a roller drive of the roller 18F of the roller 20C and the heating furnace 18 of the conveying table 20 Z (blank).
[0040]
　Thus, the roller 18F of the roller 20C and the heating furnace 18 of the conveying table 20, the first position 18A which is located in the heating furnace 18, a second position located in the transport range outside the heating furnace 18 the material Z between 20E constituting a transport mechanism for moving the reciprocating direction.
[0041]
　The first manipulator 16 may carry a material Z between at least one second position 20E of the press 12, 14 directly. Thus, the first manipulator 16 is the conveyance device has a conveying function for conveying the least material Z from one to the furnace 18 of the press 12. Here, the direct transport, and go passing and dimensional worlds of material Z, say that you do not a side trip to or stop by on the way transport to other places.
[0042]
　The first manipulator 16, it is desirable to be able to convey the material Z directly between the respective second position 20E of the press machine 12, 14. In the present embodiment, the first manipulator 16 conveys the material Z directly between the press machine 12, 14 is a plurality of the press and the second position 20E. Thus, while managing the temperature of the processing object, the combination of heating step and the pressing step can be carried out twice.
[0043]
　Incidentally, out time of the material Z from the heating furnace 18 (blank) includes a heating furnace loading direction (hereinafter charging direction) within 2 seconds at length 1.5m material Z (conveyance speed 750 mm / s or higher) to.
[0044]
　Is discharged to the transport table 20 material Z (heating after blank) is lifted up is held by the first holding tool 16C exchanged to hook type holding mechanism of the manipulator 16, which is controlled by the controller 24. The first manipulator 16, which is controlled by the controller 24, the lift-up material Z (heating after blank), and conveyed to the press machine 12 is set to the lower mold 12D of the press 12.
[0045]
　Press 12 lowers the upper die 12C in accordance with an instruction from the controller 24, is press-molded across the material Z (heating after blank) between the upper mold 12C and the lower mold 12D. At this time, the heat of the material Z (heating after blank) is rapidly deprived by the upper mold 12C and the lower mold 12D. In particular, the mold reaches the bottom dead center, the heat removing amount while holding across the material Z in the upper mold 12C and the lower die 12D is large. This is the hot press forming of the first round.
[0046]
　At this time, the time until the material Z (heating after the blank) is held by being sandwiched between the upper mold 12C and the lower mold 12D after being discharged from the heating furnace 18 is managed. That time is, for example, about 8 sec.
[0047]
　In the present exemplary embodiment it has been set in the press machine 12 conveying table 20 to discharge material Z (heating after the blank) in the first manipulator 16, but is not limited thereto. After the linear conveyor (not shown) provided, and lifted up and discharged to the conveying table 20 from the heating furnace 18 material Z (heating after the blank) in the first manipulator 16 between the conveying table 20 and the press 12, may be shortened speed and time was set in a press machine 12 at high speed in a straight line conveyor.
[0048]
　Then, after the material Z (heating after blank) a predetermined pressing time in the press machine 12 (e.g., 10 seconds) to continue holding cooled and pressed to increase the upper mold 12C, opening the press 12. The lift-up mechanism of the press 12 (not shown) is releasing lifts up the pressed material Z (intermediate goods) from the lower mold 12D. Then, the first manipulator 16 receives the instruction from the controller 24 carries pressed material Z by holding tool 16C of hooking type holding mechanism (intermediate product) in the conveying table 20. Thus, it transported in the transport table 20 material Z (intermediate product) is housed again in the heating furnace 18 by a roller drive by an instruction from the controller 24.
[0049]
　Furnace 18, reheating the contained material Z (intermediate product) in accordance with an instruction from the controller 24, after reaching the reheating temperature (e.g. 900 ° C.), a predetermined time (e.g. 2 minutes) material Z (intermediate holding the article) at the reheating temperature. Thereafter, the heating furnace 18, is discharged to the conveying table 20 of material Z (heating intermediate product) by a roller drive described above.
[0050]
　At this time, out time of the material Z (heating intermediate product) from the heating furnace 18, and within about 2 seconds with a material of the charging direction length 1.5 m (conveying speed 750 mm / s or higher).
[0051]
　It is discharged to the conveying table 20 material Z (heating intermediate product) is held by the first holding tool 16C of hooking type holding mechanism of the manipulator 16, which is controlled by the controller 24. At this time, the controller 24, in consideration of the thermal expansion amount of the material Z (heating intermediate product) calculates the position hook by hooking type holding mechanism, and outputs a control signal to the first manipulator 16. The first manipulator 16, sets the material was lifted up and held by the holding tool 16C of hooking type holding mechanism Z (heating intermediate product), and conveyed to the press machine 14, the lower die 14D of the press 14 to.
[0052]
　Press 14 descends the upper die 14C in accordance with an instruction from the controller 24, is press-molded across the material Z (heating intermediate product) in the upper mold 14C and the lower mold 14D. At this time, the heat of the material Z (heating intermediate product) rapidly deprived by the upper mold 14C and the lower mold 14D. In particular, the mold reaches the bottom dead center, the heat removing amount while holding across the material Z in the upper mold 14C and the lower die 14D is large. This is the hot press forming a second time.
[0053]
　In this case, material Z (heating intermediate product) is the time from being discharged from the heating furnace 18 to be held by being sandwiched between the upper mold 14C and the lower die 14D is managed. That time is, for example, about 8 sec.
[0054]
　In the present embodiment, but is discharged to the conveying table 20 material Z (heating intermediate product) was set in a press machine 14 in the first manipulator 16, but is not limited thereto. After the linear conveyor (not shown) provided, and lifted up and discharged to the conveying table 20 from the heating furnace 18 material Z (heating intermediate product) in the first manipulator 16 between the conveying table 20 and the pressing machine 14, may be shortened speed and time was set in a press machine 14 at a high speed by a linear conveyor.
[0055]
　The mold of the press 14 is a die shape adapted to the final product size in consideration of the thermal expansion of the material Z (heating intermediate product). Press 14, after holding cooled and pressed material Z (heating intermediate product) a predetermined pressing time (e.g. 15 seconds) to continue to raise the upper mold 14C, opening the press 14. Pressed material Z (molded article) is releasing been lifted up from the lower die 14D in lifting machinery of the press 14 (not shown).
[0056]
　The third manipulator 28 receives the instruction from the controller 24, unloaded from the press machine 14 lifts up from the lower mold 14D release material Z (molding), and passes to the next step.
[0057]
　In the present embodiment, the cycle time is about 7 minutes / parts conveying time and twice the heating time.
[0058]
　Thus, in the hot press device 10 of the present embodiment, a plurality of times material Z to be press object (twice in this embodiment) by hot pressing, thermal history control is performed. Thus, it is possible to obtain a plurality of times heat between ultra high strength hot press molded product toughness is enhanced by quenching by a press.
[0059]
　That is, in one round of hot pressing, causing phase transformation to the hard phase (martensite transformation or bainite transformation) after which attained a complete solid solution of carbides austenitizing the material Z to be press interest. Therefore, the material Z to be pressed target as compared with the case of ferrite pearlite, it is possible to form the material austenite grain size was pressed at a small state Z (intermediate product).
[0060]
　Then, when heating the pressed material Z (intermediate product) at a second time hot pressing, since the particle size even when the carbides are not completely disappeared fine, short carbide in can be dissolved. This makes it possible to eliminate the residual carbides.
[0061]
　Furthermore, it is possible to grain refining of austenite grain size by heating in a second time hot pressing, then it is possible to generate a martensitic transformation from fine austenite grain size, high toughness, ultra high it is possible to obtain strength hot press-formed product.
[0062]
　Further, as compared with the case of connecting the hot pressing equipment to forward to press from the furnace into a plurality series, the hot press device 10 can be miniaturized, it is possible to save space.
[0063]
　The present embodiment has enabled the plurality of times heat treatment by material Z is to place the heating furnace 18 to the press 12, 14 as one group of the two groups so as to surround the transfer area to be conveyed. Therefore, it is possible to share the heating furnace 18 at a first time of the heat treatment and the second time of the heat treatment, it is possible to effectively utilize the furnace 18.
[0064]
　In the present embodiment, the controller by setting the 24, and a heating time of the first-time heat treatment and the heating time of the second time of the heat treatment in the heating furnace 18 can be individually set. Thus, during the first-time heat treatment, while retaining the material Z predetermined time at a predetermined temperature, at the time of second time heat treatment can be a process such discharges without holding the heated material Z corresponding .
[0065]
　Further, not only the hot pressing, it is also possible to manufacture a variety of press parts in combination with cold pressing.
[0066]
　Furthermore, the mold for separate components to use steel plates of the same type the thickness placed on the press 12, hot press distributes the steel for each part by heating alternately on each press 12, 14 by performing, it is possible to two-part manufacturing the same line.
[0067]
　In addition, if the cold pressing, by using a press machine 12 and the press 14 in this order, it can be a two-stage press-forming of deep drawing from a shallow-drawing molding. Thus, it is possible to increase the degree of freedom of shaping. Further, it is also possible to perform two-stage machining of the outer circumferential shear from the press molding. Thus, it is possible to form a shape that can not be achieved in a single press.
[0068]
　At this time, the cold press, the heating time is not required, it is possible to respond to mass production. Further, it performs hot pressing and heating after cold forming, preforming method also becomes possible.
[0069]
　Moreover, since the heating furnace 18 is one group, the heat treatment of the first-time heat treatment and the second time is an alternating, according to the ratio of the heating time of the first time and second time heating time, multiple stages in the furnace by, it is possible to eliminate the time loss. That is, by sequentially receiving the material at a certain time during the heat treatment of the first time, immediately after unloading after heating first time, to the heating furnace 18 is continuously operated by starting the heating of the second time in idle stage be able to.
[0070]
　(Second Embodiment)
　Hereinafter, a description will be given of a second embodiment of the present disclosure with reference to the drawings.
　Figure 4 is a diagram showing a second embodiment, the same or equivalent parts as in the first embodiment, the description thereof will be omitted with denoted by the same reference numerals and their descriptions are omitted.
[0071]
　That is, the hot press device 30 of the present embodiment differs from the first embodiment, the conveying table 20 is discontinued.
[0072]
　On the other hand, the heating furnace 18 is provided with a storage state 18C disposed inside the heating furnace 18, the furnace 18 can form the transport mechanism 32 and a discharge state 18B extending out from the doorway. The transport mechanism 32 is at the discharge state 18B, a conveying range of the first manipulator 16, the entrance is an example of a spout of the press 12 and the press 14 12FI, is arranged in front of 14FI.
[0073]
　Thus, the transport mechanism 32 includes a first position 32A to position the material Z into the heating furnace 18, a furnace outside, is moved between the second position 32B located in the transport range .
[0074]
　Further, the controller 24 outputs the material Z was pressed conveyance mechanism 32 of the discharge state 18B removed from the press 12, i.e. an instruction to convey the second position 32B in the first manipulator 16.
[0075]
　In the present embodiment, by first manipulator 16 as they carry material Z taken out from the press 12 to the transport mechanism 32 of the discharge state 18B, the heating furnace 18 is a storage state 18C of the transport mechanism 32, transport mechanism 32 it is possible to heat the material Z above quickly.
[0076]
　Further, after heating, by a furnace 18 to the conveying mechanism 32 and the discharge state 18B, the heated material Z on the transport mechanism 32, it is possible to quickly place the conveying range of the first manipulator 16. Thus, while simplifying the exchange of the heating furnace 18 of the material Z, it can be carried out smoothly.
[0077]
　Then, the transport mechanism 32 is disposed entrance of the press 12 and the press 14 12FI, in front of 14FI in the discharge state 18B. Therefore, between the conveyance mechanism 32 and the press machine 12, 14 can be connected by the shortest route, it is possible to shorten the loading and unloading time of the material Z.
[0078]
　(Third Embodiment)
　Hereinafter, a description will be given of a third embodiment of the present disclosure with reference to the drawings.
　Figure 5 is a diagram illustrating a hot press device 36 of the present embodiment, the same or equivalent parts as in the first embodiment, the description thereof will be omitted with denoted by the same reference numerals and their descriptions are omitted.
[0079]
　Hot pressing apparatus 36 of the present embodiment differs from the first embodiment in that the heating furnace 18 provided with a second heating furnace 38 in addition to (in this embodiment that. The first heating furnace 18) to differ greatly.
[0080]
　That is, one end side of the conveying table 20 is first heating furnace 18 is provided on the other end, the second heating furnace 38 is provided. Thus, in the hot press device 36 according to the present embodiment, there is a less number of press 12, 14 heating furnace be two or more.
[0081]
　Then, the press machine 14 side portion of the second heating furnace 38, there is disposed a material table 22, the first manipulator 16 is disposed between the first heating furnace 18 and the press 14. Furthermore, each press machine 12, the heating furnace 18 and 38, each table 20, 22 is provided in the transfer range of the first manipulator 16.
[0082]
　The operation of this embodiment will be described according to the above configuration. Each manipulator 16, 26, 28, each pressing machine 12, 14, is like the furnace 18, 38, like the first embodiment, it is assumed to operate in accordance with an instruction from the controller 24, an instruction from the controller 24 It will not be described.
[0083]
　That is, the first manipulator 16, the material was loaded on the material table 22 Z (blank) conveyed to the conveying table 20 held by the adsorption retention mechanism.
[0084]
　Transported in the transport table 20 material Z (blank) is accommodated in the first heating furnace 18 by a roller drive described above. First heating furnace 18, a set temperature (e.g., about 900 ° C.), after heating the set time (e.g. 4 min) material Z (blank), is discharged to the conveying table 20 the material Z (the blank) in roller driving .
[0085]
　Is discharged to the transport table 20 material Z (heating after blank) is held by the hook-type holding mechanism of the first manipulator 16 is lifted up, it is set on the lower mold 12D of the press 12.
[0086]
　Press 12, the upper mold 12C lowered, press molded sandwich material Z (heating after blank) between the upper mold 12C and the lower mold 12D. At this time, the heat of the material Z (heating after blank) is rapidly deprived by the upper mold 12C and the lower mold 12D. In particular, the mold reaches the bottom dead center, the heat removing amount while holding across the material Z in the upper mold 12C and the lower die 12D is large. This is the hot press forming of the first round.
[0087]
　Time to material Z (heating after the blank) is held by being sandwiched between the upper mold 12C and the lower mold 12D from being discharged from the first heating furnace 18 is managed. That time is, for example, about 8 sec.
[0088]
　In the present exemplary embodiment it has been set in the press machine 12 conveying table 20 to discharge material Z (heating after the blank) in the first manipulator 16, but is not limited thereto. Linear conveyor between the conveying table 20 and the pressing machine 12 (not shown) is provided, press the material discharged into the conveying table 20 from the first heating furnace 18 Z (heating after blank) at high speed by a linear conveyor may be shortened speed and time is set to 12.
[0089]
　Press 12, after holding cooled and pressed material Z (heating after blank) predetermined pressing time (e.g. 10 seconds) to continue to raise the upper mold 12C, opening the press 12. Pressed material Z (intermediate product) is releasing been lifted up from the lower die 12D in lifting machinery of the press 12 (not shown).
[0090]
　The first manipulator 16 conveys pressed material Z by hooking type holding mechanism (intermediate product) from the lower mold 12D to lift up and conveying table 20. Then, the material Z (intermediate product), which is conveyed to the conveying table 20 is accommodated in the second heating furnace 38 by a roller drive of the conveying table 20.
[0091]
　The second heating furnace 38, the contained material Z (intermediate product) reheated, when it reaches the reheating temperature (e.g. 400 ° C.), at the reheating temperature for a predetermined time (e.g. 60 min) material (intermediate product) after holding, discharge the material Z (heating intermediate product) to the conveying table 20 by roller drive described above.
[0092]
　In this case, material Z out time (heating intermediate product) from the second heating furnace 38, and within about 2 seconds with a material of the charging direction length 1.5 m (conveying speed 750 mm / s or higher).
[0093]
　It is discharged to the conveying table 20 material Z (heating intermediate product) is held by the hook-type holding mechanism of the first manipulator 16. At this time, the controller 24, in consideration of the thermal expansion amount of the material Z (heating intermediate product) calculates the position hook by hooking type holding mechanism, and outputs a control signal to the first manipulator 16. The first manipulator 16, lift-up material Z (heating intermediate product) is set in the lower die 14D of the press 14.
[0094]
　Press 14, the upper mold 14C lowered, press molded sandwich material Z (heating intermediate product) in the upper mold 14C and the lower mold 14D. At this time, the heat of the material Z (heating intermediate product) rapidly deprived by the upper mold 14C and the lower mold 14D. Heat removal amount while holding across the material Z in the upper mold 14C and the lower die 14D is large. This is the hot press forming a second time.
[0095]
　Material Z (heating intermediate product) time to be held by being sandwiched between the upper mold 14C and the lower mold 14D from being discharged from the second heating furnace 38 is managed. That time is, for example, approximately 6 seconds.
[0096]
　In the present embodiment, but is discharged to the conveying table 20 material Z (heating intermediate product) was set in a press machine 14 in the first manipulator 16, but is not limited thereto. Linear conveyor between the conveying table 20 and the pressing machine 14 (not shown) is provided, press the material discharged into the conveying table 20 from the second heating furnace 38 Z (heating intermediate product) at high speed by a linear conveyor may be shortened speed and time is set to 14.
[0097]
　In the cooling of the second-time hot press forming, since not occur martensitic transformation, material Z into account the shrinkage during cooling (heating intermediate product), the mold convex mold (punch) and convex mold corresponding concave mold (the die) is set to larger than the final product size.
[0098]
　After the press 14 with material Z (heating intermediate product) a predetermined pressing time (e.g. 15 seconds) to continue and maintained cooled and pressed to increase the upper mold 14C, opening the press 14. Pressed material Z (molded article) is releasing been lifted up from the lower die 14D in lifting machinery of the press 14 (not shown). The third manipulators 28, the material Z (molded article) was carried out by lifting up the lower mold 14D, it passes to the next step.
[0099]
　In the present embodiment, the cycle time takes about 65 minutes per part by the conveyance time and twice the heating time.
[0100]
　Thus, even in hot press device 36 of the present embodiment can achieve the same effects as the first embodiment.
[0101]
　Further, in this embodiment, it comprises a first heating furnace 18 for heating the material Z to be pressed in a press 12 and a second heating furnace 38 for heating the material Z to be pressed in a press 14, one the material Z can be heated in a dedicated furnace in a round-th hot press forming and a second time hot press forming. Therefore, it is possible to optimum temperature control in each hot press forming, thereby facilitating quality control of moldings.
[0102]
　In the present embodiment, the heating time of the second time is longer than the first-time heating time, unused time of the first heating furnace 18 is generated. To solve this problem, the second heating furnace 38 may be multi-staged or orbiting type.
[0103]
　In this case, the second heating furnace 38, that it allows performing the heating of the material Z in a number corresponding to the ratio of the second time and first time of heating time (15 sheets from 60 minutes / 4 minutes in this embodiment) in the heating and second time heating the first time, it is possible to minimize the unused time to synchronize the heating time. Thus, after synchronizing the operation of the furnace, in order to further improve productivity, it is sufficient that the heating furnace stages, or orbiting furnace length and its N times.
[0104]
　Further, in the present embodiment, we established a mold for separate parts in the pressing machine 12, different for each part, a different steel type material Z (blank), the first and with a time difference is inserted into the second heating furnace 18, 38, it can be performed hot press with the corresponding press 12,14. Thus, it is also possible to produce two types of parts with the same line.
[0105]
　Then, is provided with the first and second heating furnaces 18 and 38, it is possible to produce a plurality parts used different heterologous with different thickness of the material Z of the heating conditions at the same time.
[0106]
　(Fourth Embodiment)
　Hereinafter, a description will be given of a fourth embodiment of the present disclosure with reference to the drawings.
[0107]
　Figure 6 is a diagram showing a hot pressing apparatus 40 of the present embodiment, the material table 42 is provided on the upstream side in the conveying direction of the processed material being Z. Downstream of the material table 42, the continuous roller hearth furnace 44 is provided that constitutes a part of the conveying device is one example of a heating furnace. Between the material table 42 and the continuous roller hearth furnace 44, first manipulator 46 which is an example of a conveying device for conveying the material Z on the material table 42 to spout 44A of the continuous roller hearth furnace 44 is provided ing.
[0108]
　Continuous roller hearth furnace 44, as shown in FIG. 7, a roller 44F to convey the inserted material Z from charging hole 44A to the discharge port 44D. Continuous roller hearth furnace 44 is heated while feeding to the downstream side of the material Z in the roller 44F from the upstream side.
[0109]
　Thus, the continuous roller hearth furnace 44 has a furnace transporting unit 44H for conveying the material Z from charging hole 44A to the discharge port 44D.
[0110]
　Downstream of the continuous roller hearth furnace 44, as shown in FIG. 6, the conveying table 48 is provided, can be placed the discharged material Z from the outlet 44D of the continuous roller hearth furnace 44.
[0111]
　Downstream of the conveying table 48, the multi-stage furnace 50 is provided. Multistage furnace 50, as shown in FIG. 8, are provided side by side a plurality of heating chambers 50A are vertically. Each heating chamber 50A is an elevating, it can lift the combined inlet and outlet of each heating chamber 50A in the conveying table 48. Thus, the charging and discharging operation of the material Z, can be carried out in the same time at any stage.
[0112]
　Also, while heating a plurality of material Z in the heating chamber 50A, by adjusting the time to take out from the housing to the heating chamber 50A, it can control the heating time of the material Z.
[0113]
　Note that the multi-stage furnace 50, as indicated by the broken line in FIG. 8, by extending the heating chamber 50A in the transverse direction, and it can place multiple heating chambers 50A in the vertical and horizontal directions.
[0114]
　The conveying table 48 one side with a boundary, as shown in FIG. 6, there is disposed a pressing machine 52, on the other side, it is arranged press 54.
[0115]
　Further, in the vicinity of the corner portions of the conveying table 48 side of the press 54, the second manipulator 56 is provided for connecting the continuous roller hearth furnace 44 and conveyor table 48 and the pressing machine 52 and the press machine 54 and the multi-stage furnace 50 ing. Outlet 44D of the continuous roller hearth furnace 44, the conveying table 48, the press 52, the press 54 and the multi-stage furnace 50, is arranged in the conveying range of the material Z by the second manipulator 56.
[0116]
　Each press machine 52 and the continuous roller hearth furnace 44 and the multi-stage furnace 50 is arranged to surround the conveying table 48. Facing the press machine 52 and the press 54. A continuous roller hearth furnace 44 and the multi-stage furnace 50 are opposed. This allows movement during and between the multi-stage furnace 50 and the press machine 54 of the material Z and the continuous roller hearth furnace 44 and the press 52 in the second manipulator 56.
[0117]
　Then, near the corner of the conveying table 48 and opposite side of the press 54 is provided with a third manipulator 58, the third manipulator 58 discharges the pressed material Z in a press 54.
[0118]
　The structure of the conveying table 48, the press machine 52, and the manipulators 46,56,58 is the same as in the first embodiment.
[0119]
　The operation of this embodiment will be described according to the above configuration. Each manipulator 46,56,58, each press machine 52, the like the heating furnaces 44 and 50, like the first embodiment, it is assumed to operate in accordance with an instruction from the controller 60, an instruction from the controller 60 for a description thereof will not be repeated.
[0120]
　The first manipulator 46, the material was loaded on the material table 42 Z (blank) and held by the adsorption holding mechanism transports every predetermined time to spout 44A of the continuous roller hearth furnace 44.
[0121]
　This material Z (blank), along with being heated while moving the continuous roller hearth furnace 44 by a roller drive, a predetermined time has elapsed after reaching the predetermined temperature (1000 ° C. for example) (4 minutes as an example) after, it is discharged from the discharge port 44D to the transport table 48.
[0122]
　Is discharged to the conveying table 48 material Z (heating after blank) is held by the hook-type holding mechanism of the second manipulator 56 is lifted up, it is set on the lower mold 52D of the press 52.
[0123]
　Press 52 descends the upper mold, press-molded by being sandwiched between the upper die and the lower die 52D the material Z (heating after blank). At this time, the heat of the material Z (heating after blank) is rapidly deprived by the upper mold and the lower mold 52D. In particular, the mold reaches the bottom dead center, the heat removing amount while holding across the material Z in the upper mold 52C and the lower die 52D is large. This is the hot press of the first round.
[0124]
　Material Z (heating after blank) the time since the discharge from the continuous roller hearth furnace 44 to be held by being sandwiched between the upper mold 12C and the lower die 12D is managed. That time is, for example, about 8 sec.
[0125]
　In the present exemplary embodiment it has been set in the press machine 52 carrying table 48 to discharge material Z (heating after the blank) in the second manipulator 56, but is not limited thereto. Provided a linear conveyor (not shown) between the conveyor table 48 and the press 52, the press continuous roller hearth of the heating furnace 44 is discharged to the conveying table 48 material Z (heating after blank) at high speed by a linear conveyor may be shortened speed and time is set on the machine 52.
[0126]
　Press 52, after holding cooled material Z (heating after blank) predetermined pressing time (e.g. 10 seconds) continuously pressed, it increases the upper mold, releasing the press 52. Pressed material Z (intermediate product) is releasing been lifted up from the lower die 52D in lifting machinery of the press 52 (not shown).
[0127]
　Then, the second manipulator 56 conveys pressed material Z by hooking type holding mechanism (intermediate product) in the conveying table 48 and lifted up from the lower die 52D. Transported in the transport table 48 material Z (intermediate product) is accommodated in the heating chamber 50A which is selected in the multi-stage furnace 50 by a roller drive of the conveying table 48. At this time, when accommodating the material Z (intermediate product) in the heating chamber 50A that can not be accommodated in the carrying table 48, and performs receiving operations by the second manipulator 56.
[0128]
　In the heating chamber 50A, reheated the contained material Z (intermediate product), when it reaches the reheating temperature (e.g. 900 ° C.), a predetermined time (e.g. 2 minutes) material Z (intermediate product) in the reheating temperature after holding, discharge the material Z (heating intermediate product) to the conveying table 48 by a roller drive described above. At this time, if you can not discharge directly conveying table 48, and performs discharge operations by the second manipulator 56. Incidentally, out time of the material Z from the multi-stage furnace 50 (heating intermediate product) is about 2 seconds or less in the material length 1.5m in loading direction (conveying speed 750 mm / s or higher).
[0129]
　It is discharged to the conveying table 48 material Z (heating intermediate product) is held by the hook-type holding mechanism of the second manipulator 56. At this time, the controller 60, in consideration of the thermal expansion amount of the material Z (heating intermediate product) calculates the position hook by hooking type holding mechanism, and outputs a control signal to the second manipulator 56. The second manipulator 56 is lifted up material Z (heating intermediate product) is set in the lower die 54D of the press 54.
[0130]
　Press 54 descends the upper mold, press-molded by being sandwiched between the upper die and the lower die 54D the material Z (heating intermediate product). At this time, the heat of the material Z (heating intermediate product) rapidly deprived by the upper mold and the lower mold 54D. In particular, the mold reaches the bottom dead center, the heat removing amount while holding by being sandwiched between the upper die and the lower die 54D the material Z is large. This is the hot press forming a second time.
[0131]
　In this case, material Z (heating intermediate product) time to be held by being sandwiched between the upper die and the lower die 54D from being discharged from the multi-stage furnace 50 is managed. That time is, for example, approximately 6 seconds.
[0132]
　In the present embodiment, but is discharged to the conveying table 48 material Z (heating intermediate product) was set in a press machine 54 in the second manipulator 56, but is not limited thereto. Linear conveyor (not shown) provided between the conveying table 48 and the press 54, the press 54 material is discharged to the conveying table 48 from the multi-stage furnace 50 Z (heating intermediate product) at high speed by a linear conveyor it may be shortened speed and time is set to.
[0133]
　After a pressing machine 54 material Z (heating intermediate product) a predetermined pressing time (e.g. 15 seconds) to continue and maintained cooled and pressed to increase the upper mold, releasing the press 54. Pressed material Z (molded article) is releasing been lifted up from the lower die 54D in lifting machinery of the press 54 (not shown). The third manipulator 58, the material Z (molded article) was carried out by lifting up the lower mold 54D, it passes to the next step.
[0134]
　Thus, even in hot press device 40 of the present embodiment can achieve the same effects as the first embodiment and the third embodiment.
[0135]
　In the present embodiment, first-time heating time by continuous roller hearth furnace 44, since due to the multi-stage furnace 50 is twice the second time heating time, to synchronize the processing amount, the continuous roller hearth furnace a within the furnace number 44, it may be about twice the multistage furnace 50.
[0136]
　In this configuration, while the material Z during first-time heating for a predetermined time after reaching the predetermined temperature, during the heating of the second time, after the material Z has reached a predetermined temperature is discharged without holding a predetermined heating time even pattern can be performed efficiently, it is suitable for such production.
[0137]
　When molding a molded article with a hot press of the conventional method can be produced simultaneously distributing the two different parts. Furthermore, although the it takes second time heat treatment time, it is possible corresponding tempering.
[0138]
　(Fifth Embodiment)
　Hereinafter, a description will be given of a fifth embodiment of the present disclosure with reference to the drawings.
[0139]
　Figure 9 is a diagram showing a hot pressing apparatus 64 of the present embodiment. The conveyance direction upstream side of the processing the material to Z is provided with a first manipulator 66 which is an example of a transport device, to the side of the first manipulator 66, one transport device is one example of a heating furnace continuous roller hearth furnace 68 constituting a part is provided.
[0140]
　Downstream of the continuous roller hearth furnace 68, the press 70 is provided, it is arranged so as spout 70A of the press 70 is opposed to the discharge port 68B of the continuous roller hearth furnace 68. During a side of the continuous roller hearth furnace 68 with the continuous roller hearth furnace 68 and the press machine 70, a second manipulator which is an example of a conveying device that connects the continuous roller hearth furnace 68 and the press 70 72 is provided. The spout 70A of the discharge port 68B and the press 70 consecutive roller hearth furnace 68 is provided in a conveying range of the material Z by the second manipulator 72.
[0141]
　Continuous roller hearth furnace 68 is configured similarly to the fourth embodiment will be transported to sequentially heated while the outlet 68B of the material Z, which is charged from the charging hole 68A. Thus, the continuous roller hearth furnace 68, a furnace transporting unit 68H for conveying the material Z from charging hole 68A to the discharge port 68B constitute a roller feed mechanism constitutes a part of the conveying path.
[0142]
　Downstream of the press 70, and a roller hearth furnace 74 which forms a part is provided in the transport device is one example of a heating furnace, instrumentation outlet 70B and the roller hearth furnace 74 taken of the press 70 an inlet 74A is disposed to face.
[0143]
　Like the roller hearth furnace 74 also continuous roller hearth furnace 68, it is conveyed to the discharge port 74B while heating the material Z, which is charged from the charging hole 74A. Thereby, a roller hearth furnace 74, furnace transporting unit 74H for conveying the material Z from charging hole 74A to the discharge port 74B is formed with a roller feed mechanism, constituting a part of the conveying path.
[0144]
　The side of a roller hearth furnace 74, a third manipulator 76 is provided as an example of a conveying device that connects the press machine 70 and the roller hearth furnace 74. The spout 74A of the outlet 70B and the roller hearth furnace 74 of the press 70 is provided on the conveying range of the material Z by the third manipulator 76.
[0145]
　Downstream of the roller hearth furnace 74, is conveyed table 78 is provided, can be placed the discharged material Z from the outlet 74B of the roller hearth furnace 74 the conveying table 78.
[0146]
　Downstream of the conveying table 78, the multi-stage furnace 82 is provided. The structure of the multi-stage furnace 82, the same as in the fourth embodiment.
[0147]
　On one side of the conveying table 78 and the boundary is press 84 is provided, the entrance 84A of the material Z to the press 84 is provided on the conveying table 78 side. On the side of the other in which the conveying table 78 and SAKAI, press 86 is provided, the entrance 86A of the material Z to the press 86 is provided on the conveying table 78 side.
[0148]
　The vicinity of the corner portions of the conveying table 78 side of the press 86, a fourth manipulator 88 for connecting the roller hearth furnace 74 and conveyor table 78 and the pressing machine 84 and the press machine 86 and the multi-stage furnace 82 is provided. Outlet 74B, the conveying table 78 of the roller hearth furnace 74, the press 84, the press 86 and the multi-stage furnace 82, is arranged in the conveying range of the material Z according to the fourth manipulator 88.
[0149]
　And each pressing machine 84, 86 with the heating furnace 74, 82 are arranged to surround the conveying table 78, opposed to the press machine 84 and the press 86, a roller hearth furnace 74 and the multi-stage furnace 82 both are opposed to each other. This allows movement during and between the multi-stage furnace 82 and the press 86 of the material Z and a roller hearth furnace 74 and the press 84 in the fourth manipulator 88.
[0150]
　Then, near the corner of the press 86 and the fifth manipulator 90 is provided, can be discharged pressed material Z in a press 86.
[0151]
　The structure of the conveying table 78, the press machine 70,84,86, and each manipulator 66,72,76,88,90 are the same as in the first embodiment.
[0152]
　The operation of this embodiment will be described according to the above configuration. Each manipulator 66,72,76,88,90, each press machine 70,84,86, is like the furnace 68,74,82, as in the first embodiment, operates in accordance with an instruction from the controller 92 and things, will not be described instruction from the controller 92.
[0153]
　The first manipulator 66, for example, material loaded material table (blank) and held by the adsorption holding mechanism transports every predetermined time to spout 68A of the continuous roller hearth furnace 68.
[0154]
　This material Z (blank) is heated while moving the continuous roller hearth furnace 68 by a roller drive. Then, the material Z (blank) after a predetermined time has elapsed after reaching the predetermined temperature (1000 ° C. for example) (4 minutes, for example), is conveyed to the press 70 from the discharge port 68B by the second manipulator 72, It is set to the lower mold 70D.
[0155]
　Press 70 descends the upper mold, press-molded by being sandwiched between the upper die and the lower die 70D the material Z (heating after blank). At this time, the heat of the material Z (heating after blank) is rapidly deprived by the upper mold and the lower mold 70D. In particular, the mold reaches the bottom dead center, the heat removing amount while holding by being sandwiched between the upper die and the lower die 70D the material Z is large. This is the hot press forming of the first round.
[0156]
　Material Z (heating after blank) is from being discharged from the continuous roller hearth furnace 68 to be held by being sandwiched between the upper die and the lower die 70D time is managed. That time is, for example, about 8 sec.
[0157]
　In press 70, after holding the cooling material Z (heating after blank) a predetermined pressing time (e.g. 10 seconds) continuously pressed, it increases the upper mold, releasing the press 70. Pressed material Z (first intermediate product) is releasing been lifted up from the lower die 70D in lifting machinery of the press 70 (not shown). The third manipulator 76 is lifted up pressed material Z by hooking type holding mechanism (first intermediate product) from the lower mold 70D to convey the spout 74A of the roller hearth furnace 74.
[0158]
　This material Z (primary intermediate product), discharge after reaching a predetermined temperature is heated while moving over the roller hearth furnace 74 for 2 minutes by a roller drive (900 ° C. for example), from the outlet 74B to the conveying table 78 It is.
[0159]
　Discharged material Z to the conveying table 78 (after heating primary intermediate product) is held by the hook-type gripping mechanism of the fourth manipulator 88 is lifted up, it is set on the lower mold 84D of the press 84.
[0160]
　Press 84 descends the upper mold, press-molded by being sandwiched between the upper die and the lower die 84D the material Z (primary intermediate product after heating). At this time, the heat of the material Z (primary intermediate product after heating) is rapidly deprived by the upper mold and the lower mold 84D. In particular, to reach the bottom dead center mold, heat removal amount between the material Z and held by being sandwiched between the upper die and the lower die 84D is large. This is the hot-press a second time.
[0161]
　Material Z (primary intermediate product after heating) time to be held by being sandwiched between the upper die and the lower die 84D from being discharged from a roller hearth furnace 74 is managed. That time is, for example, about 8 sec.
[0162]
　In the present embodiment, although the discharged material Z to the conveying table 78 (primary intermediate product after heating) was set in a press machine 84 in the fourth manipulator 88, but is not limited thereto. It provided a linear conveyor (not shown) between the conveyor table 78 and the press 84, a roller hearth of the heating furnace 74 is discharged to the conveying table 78 material Z (heating after the primary intermediate product) at high speed by the linear conveyor may be shortened speed and time was set in a press 84.
[0163]
　Press 84, after holding cooled by pressing the material Z (primary intermediate product after heating) predetermined pressing time (e.g. 10 seconds) to continue to raise the upper mold. The fourth manipulator 88, pressed material Z by hooking type holding mechanism (secondary intermediate product) and releasing lifted up from the lower mold 84D, is conveyed in the conveying table 78.
[0164]
　Transported in the transport table 78 material Z (secondary intermediate product) is accommodated in the heating chamber which is selected in the multi-stage furnace 82 by a roller drive of the conveying table 78. At this time, when accommodating the material Z (secondary intermediate product) in the heating chamber can not be accommodated in the carrying table 78, and performs receiving operations by the fourth manipulator 88.
[0165]
　This heating chamber, reheating the contained material Z (secondary intermediate product), when it reaches the reheating temperature (e.g. 400 ° C.), heated for a predetermined time (e.g. 60 minutes) material Z (secondary intermediate product) after, to discharge the material Z (heating secondary intermediate product) to the conveying table 78 by a roller drive described above. At this time, if it can not discharge directly material Z (heating secondary intermediate product) to the conveying table 78, and performs discharge operations by the fourth manipulator 88. In this case, material Z out time (heating secondary intermediate product) for the multistage heating furnace 82, and within about 2 seconds with a material of the charging direction length 1.5 m (conveying speed 750 mm / s or higher).
[0166]
　It is discharged to the conveying table 78 material Z (heating secondary intermediate product) is held by the hook-type holding mechanism of the fourth manipulator 88. At this time, the controller 92, in consideration of the thermal expansion amount of the material Z (heating secondary intermediate product) calculates the position hook by hooking type holding mechanism, and outputs a control signal to the fourth manipulator 88. The fourth manipulator 88, lift-up material Z (heating secondary intermediate product) is set in the lower die 86D of the press 86.
[0167]
　Press 86 descends the upper mold, press-molded by being sandwiched between the upper die and the lower die 86D the material Z (heating secondary intermediate product). At this time, the heat of the material Z (heating secondary intermediate product) rapidly deprived by the upper mold and the lower mold 86D. In particular, the mold reaches the bottom dead center, the heat removing amount while holding by being sandwiched between the upper die and the lower die 86D the material Z is large. This is the hot press forming of the third time.
[0168]
　Material Z (heating secondary intermediate product) time to be held by being sandwiched between the upper die and the lower die 86D from being discharged from the multi-stage furnace 82 is managed. That time is, for example, approximately 6 seconds.
[0169]
　In the present embodiment has been set in the press machine 86 discharged material Z to the conveying table 78 (heating secondary intermediate product) in the fourth manipulator 88, but is not limited thereto. Linear conveyor (not shown) provided between the conveying table 78 and the press 86, the press multistage heating furnace 82 material is discharged to the conveying table 78 from Z (heating secondary intermediate product) at high speed by a linear conveyor may be shortened speed and time is set on the machine 86.
[0170]
　Since no martensitic transformation in the cooling of the three-round hot press forming, material Z into account the shrinkage during cooling (heating secondary intermediate product), the mold of the press 86 convex mold (punch ) and the corresponding concave mold to convex mold (die) is set to larger than the final product size.
[0171]
　Press 86, after holding cooled and pressed material Z (heating secondary intermediate product) a predetermined pressing time (e.g. 15 seconds) to continue to raise the upper mold, releasing the press 86. Pressed material Z (molded article) is releasing been lifted up from the lower die 86D in lifting machinery of the press 86 (not shown). The fifth manipulator 90 is unloaded by lifting up the material Z (molded article) from the lower mold 86D, it passes to the next step.
[0172]
　Thus, even in hot press device 64 of the present embodiment can achieve the same effects as the first embodiment and the third embodiment.
[0173]
　The configuration of this embodiment is suitable to extend the line of conventional hot pressing equipment in multiple times heat treatment hot pressing step.
[0174]
　At this time, usually a hot press at line of conventional hot pressing equipment, it is possible to cope with the combination of the cold plurality press. The heat treatment also allows three times a combination of twice quenching and tempering. In this case, the scalable so can also increase the number of stages of the multi-stage furnace for tempering which require processing time.
[0175]
　(Sixth Embodiment)
　Hereinafter, a description will be given of a sixth embodiment of the present disclosure with reference to the drawings.
[0176]
　Figure 10 is a diagram showing a hot pressing apparatus 96 of the present embodiment. The conveyance direction upstream side of the processing the material to Z, the heating furnace 98 is provided on the downstream side of the heating furnace 98, the press machine 100 is provided. On the side of the heating furnace 98, first manipulator 102 is provided as an example of a transport device connecting the heating furnace 98 and the press machine 100, the heating furnace 98 and the conveying range of the material Z by the first manipulator 102 press 100 is disposed.
[0177]
　Downstream of the press 100, a roller hearth furnace 104 is provided as an example of a heating furnace on the downstream side of the roller hearth furnace 104, the press machine 106 is provided. Outlet 100B of the press 100 is opposed to the spout 104A roller hearth furnace 104, the outlet 104B of the roller hearth furnace 104 is opposed to the spout 106A of the press 106.
[0178]
　Roller hearth furnace 104, the fourth embodiment and are substantially the same structure, to convey to the outlet 104B while heating the material Z, which is charged from the charging hole 104A. Thereby, a roller hearth furnace 104 furnace transporting section 104H for conveying the material Z from charging hole 104A to the discharge port 104B is formed by a roller feed mechanism, constituting a part of the conveying path.
[0179]
　Between the side at a by press 100 and the roller hearth heating furnace 104 of the press 100, second manipulator 108 is provided as an example of a conveying device that connects the press machine 100 and the roller hearth heating furnace 104 there. The spout 104A of the outlet 100B and the roller hearth heating furnace 104 taken of the press 100, is provided on the conveying range of the material Z by the second manipulator 108.
[0180]
　A side portion of the roller hearth furnace 104 is provided between the roller hearth furnace 104 and press 106, the third manipulator 110 is provided as an example of a transport device which connects the roller hearth heating furnace 104 and press 106 It is. The spout 106A of outlet 104B and the press 106 of the roller hearth furnace 104, are provided in the transfer range of the material Z by the third manipulator 110.
[0181]
　The structure of the press machine 100, 106 and the manipulators 102, 108, 110 are the same as in the first embodiment.
[0182]
　The operation of this embodiment will be described according to the above configuration. Each manipulator 102, 108, 110, each press 100, 106, is like the furnace 98, 104, as in the first embodiment, it is assumed to operate in accordance with an instruction from the controller 112, an instruction from the controller 112 It will not be described.
[0183]
　Predetermined time after reaching the predetermined temperature (1000 ° C. for example) by a heating furnace 98 and heated material Z (heating after blank) (4 minutes as an example), the lower metal of the press 100 is taken out by the first manipulator 102 to set the type 100D.
[0184]
　Press 100 lowers the upper mold, press-molded by being sandwiched between the upper die and the lower die 100D material Z (heating after blank). At this time, the heat of the material Z (heating after blank) is rapidly deprived by the upper mold and the lower mold 100D. In particular, the mold reaches the bottom dead center, the heat removing amount while holding by being sandwiched between the upper die and the lower die 100D material Z is large. This is the hot press of the first round.
[0185]
　Time to material Z (heating after the blank) is held by being sandwiched between the upper mold and the lower mold 100D after being discharged from the heating furnace 98 is managed. That time is, for example, about 8 sec.
[0186]
　Press 100, after holding cooled material Z (heating after blank) predetermined pressing time (e.g. 10 seconds) continuously pressed, it increases the upper die.
[0187]
　The second manipulator 108, lifts up the pressed material Z by hooking type holding mechanism (intermediate product) from the lower mold 100D conveyed to spout 104A roller hearth furnace 104.
[0188]
　This material Z (intermediate product) after reaching a predetermined temperature is heated while moving over the roller hearth heating furnace 104 for 2 minutes by a roller drive (900 ° C. for example), it is discharged from the discharge port 104B.
[0189]
　The third manipulator 110, lifted up by holding roller hearth furnace 104 of outlet 104B is discharged from the material Z (heating after intermediate product) by hooking type holding mechanism, below the spout 106A of the press 106 to set the mold 106D.
[0190]
　Press 106 lowers the upper mold, press-molded by being sandwiched between the upper die and the lower die 106D material Z (after heating the intermediate product). At this time, the heat of the material Z (heating after intermediate product) rapidly deprived by the upper mold and the lower mold 106D. In particular, the mold reaches the bottom dead center, the heat removing amount while holding by being sandwiched between the upper die and the lower die 106D material Z is large. This is the hot press forming a second time.
[0191]
　Material Z Time to (after heating the intermediate product) is held by being sandwiched between the upper mold and the lower mold 106D after being discharged from the roller hearth furnace 104 are managed. That time is, for example, about 8 sec.
[0192]
　Press 106, after holding cooled by pressing the material Z (after heating the intermediate product) a predetermined pressing time (e.g. 15 seconds) to continue to raise the upper mold, releasing the press 106. Pressed material Z (molded article) is releasing been lifted up from the lower mold 106D in lifting machinery of the press 106 (not shown). The third manipulator 110, material Z (the molding) is taken out by lifting up the lower mold 106D, it passes to the next step.
[0193]
　Thus, even in hot press device 96 of the present embodiment can achieve the same effects as the embodiment described above.
[0194]
　Further, in the present embodiment, since using a roller hearth furnace 104 as a heating furnace 98, it is possible to constitute a part of the conveying device in the roller hearth furnace 104.
[0195]
　Then, arranged opposite the outlet 100B of the press 100 to spout 104A roller hearth furnace 104, and arranged opposite the outlet 104B of the roller hearth furnace 104 to spout 106A of the press 106. Therefore, it is possible to suppress the temperature drop of the material Z during transportation.
[0196]
　It is a description of the code below.
10 hot press device
12 presses
14 press
16 first manipulator
18 heating furnace
18B discharge state
18C storage condition
20 carrying table
24 controller
30 hot press device
32 transport mechanism
36 the hot press device
38 second furnace
40 hot pressing device
44 continuously roller hearth furnace
46 first manipulator
50 multistage heating furnace
52 press
54 presses
56 second manipulator
60 controller
64 hot press device
68 continuously roller hearth furnace
70 press machine
72 a second manipulator
74 roller hearth heating furnace
76 third manipulator
78 carrying table
82 multistage furnace
84 press
86 presses
88 fourth manipulator
92 controller
96 hot press device
98 heating furnace
100 pressing machine
100B outlet
102 The first manipulator
104 roller hearth furnace
104A spout
104B outlet
106 press
106A charging hole
108 second manipulator
110 third manipulator
112 controller
　«note»
　from the specification, the following aspects are conceptualized.
　That is, the hot press device according to the first aspect,
　the first pressing machine,
　and the second pressing machine,
　a conveying device that connects the first press and the second press,
　provided in the conveyance range of the said conveying device a heating furnace which is,
　and a.
　Hot press apparatus according to the second aspect, in the first aspect,
　wherein the conveying device comprises a conveying function into the heating furnace from the first pressing machine or the second pressing machine.
　Hot press device according to the third aspect, in the first or second aspect,
　move between a second position located at the conveying range with the first position to position the material in the heating furnace It is provided with a transport mechanism.
　Hot press device according to the fourth aspect, in the third embodiment,
　the transport mechanism is capable of transporting between said second position and said first position in the reciprocating direction.
　Hot press apparatus according to the fifth aspect, in the third or fourth aspect,
　wherein the second position is set to at least one of the spout in front of the first pressing machine and the second pressing machine.
　Hot press device according to a sixth aspect, in any one of the third to fifth aspect,
　in the second position the material is taken out material pressed from the first pressing machine by controlling the conveying device and a controller for transporting.
　Hot press device according to a seventh aspect, in any of the first to sixth aspects,
　wherein the conveying device comprises a furnace transporting unit for transporting the material to the discharge port from the charging hole of the furnace.
　Hot press apparatus according to the eighth aspect, in the seventh aspect,
　wherein the outlet of the first pressing machine faces the spout of the heating furnace, spout outlet is the second press of the heating furnace It is opposed to.
　Hot press device according to a ninth aspect, in any of the first to seventh aspects,
　further comprising another heating furnace to the conveying range of the conveying device.
　2016 September disclosure of the Japanese Patent Application No. 2016-173990 filed on 6th, entirely incorporated herein by reference.
　Further, all documents described herein, patent applications and technical standards, each individual publication, to the same extent as if the patent and technical standards are incorporated by reference marked specifically and individually, It incorporated by reference herein.

The scope of the claims
[Requested item 1]
　A first pressing machine,
　and the second pressing machine,
　said a transfer device in which the first connecting a press and the second press,
　a heating furnace provided in the transfer range of the said conveying apparatus
　hot press device provided with .
[Requested item 2]
　The conveying device, a hot press device according to claim 1, further comprising a conveying function from the first pressing machine or the second pressing machine to the heating furnace.
[Requested item 3]
　Hot press according to claim 1 or claim 2 comprising a transport mechanism to move between the second position located at the conveying range with the first position to position the material in the heating furnace apparatus.
[Requested item 4]
　The transport mechanism, the hot press apparatus according between said second position and said first position to Claim 3 can be conveyed in a reciprocating direction.
[Requested item 5]
　Hot press device according to claim 3 or claim 4 wherein at least one of the spout of the front second arrangement position is set in the first pressing machine and the second pressing machine.
[Requested item 6]
　Hot as claimed in any one of claims 3 to 5 with a controller for conveying the material removed a press material by controlling the conveying device from the first pressing machine to said second position press apparatus.
[Requested item 7]
　The conveying device, a hot press device according to any one of claims 1 to 6 having a furnace transporting unit for transporting the material to the discharge port from the charging hole of the furnace.
[Requested item 8]
　The outlet of the first pressing machine faces the spout of the heating furnace, a hot press device according to claim 7, the outlet of the heating furnace is opposed to the spout of the second pressing machine.
[Requested item 9]
　Hot press device according to any one of claims 1 to 7, further comprising another heating furnace to the conveying range of the conveying device.