Specification
Invention title: Hold device
Technical field
[0001]
　The present invention relates to a hold device used by being attached to a mold device.
Background technology
[0002]
　Automotive structural members such as front side members, cross members, A-pillars, and B-pillars are manufactured by drawing a material (eg, a metal plate). For draw forming, a mold apparatus including an upper mold composed of a die and a lower mold composed of a punch and a holder is generally used.
[0003]
　In draw forming, for example, the outer edge of the material is pressed against the die by the holder, and the central portion of the material is pushed toward the die by a punch. As a result, a molded product having a desired shape is produced.
[0004]
　In the process of drawing, inflow resistance is generated at the outer edge of the material due to the pressing force of the holder against the die. Therefore, the material can be molded with tension applied to the material, and the occurrence of wrinkles due to the excess material during molding is suppressed.
[0005]
　In recent years, high-strength steel having a tensile strength of 590 MPa or more and further 980 MPa or more has been used as a material for structural members for automobiles in order to improve collision safety and reduce the weight of the vehicle body.
[0006]
　However, the moldability of the material decreases as the strength of the material increases. Therefore, when drawing and forming a material made of high-strength steel, if the inflow resistance generated at the outer edge of the material is too large, the plate thickness of each part of the molded product may decrease and the molded product may crack. ..
[0007]
　The occurrence of cracks as described above can be suppressed by reducing the pressing force of the holder and reducing the inflow resistance generated at the outer edge of the material. However, if the inflow resistance generated at the outer edge of the material becomes small, the material cannot be stretched properly, and wrinkles due to the excess material may occur.
[0008]
　Therefore, conventionally, a device capable of suppressing the occurrence of cracks and wrinkles as described above has been proposed. For example, Patent Document 1 discloses a press parts manufacturing apparatus. The manufacturing apparatus disclosed in Patent Document 1 includes a first die provided on the press bolster and a second die provided on the press slide. The first die includes a punch die fixed to the press bolster and a blank holder arranged outside the punch die. The second die includes a movable pad provided on the press slide, a bending blade arranged outside the movable pad, and a catcher arranged outside the bending blade so as to move in conjunction with the movable pad. It has an outer cam located on the outside of the catcher.
[0009]
　In the manufacturing apparatus of Patent Document 1, the outer edge of the blank is sandwiched by the blank holder and the bending blade, and the center of the blank is sandwiched by the movable pad and the punch die, and the center of the blank is bent by the punch die. By pushing it toward the blade side, draw forming is performed. In this case, the portion sandwiched by the movable pad and the punch die is suppressed from being deformed in the thickness direction in the molding process. Therefore, it is possible to suppress the occurrence of wrinkles in the portion narrowed by the movable pad and the punch die without increasing the pressing force of the blank holder more than necessary. As a result, it is possible to suppress the occurrence of cracks and wrinkles in the molded product.
[0010]
　By the way, when taking out a molded product after drawing molding in the above-mentioned manufacturing apparatus, it is necessary to release the first mold and the second mold. However, even after press molding, a force is applied to the movable pad and the blank holder in the direction of approaching each other. Therefore, if the first mold and the second mold are simply released, the movable pad is formed. And the molded product is deformed at the time of mold release due to the pressure from the blank holder.
[0011]
　In order to prevent the above-mentioned deformation of the molded product, the manufacturing apparatus of Patent Document 1 is provided with a joint link swingably supported by the blank holder. Specifically, in the manufacturing apparatus of Patent Document 1, by locking the joint link and the catcher at the bottom dead center of molding, it is possible to prevent the movable pad and the blank holder from moving in the direction of approaching each other. As a result, it is possible to prevent the molded product from being deformed by the pressure from the movable pad and the blank holder at the time of mold release.
Prior art literature
Patent documents
[0012]
Patent Document 1: Japanese Unexamined Patent Publication No. 2017-170482
Outline of the invention
Problems to be solved by the invention
[0013]
　By the way, in the manufacturing apparatus of Patent Document 1, in order to lock the joint link and the catcher, the outer cam of the second mold is moved toward the first mold to move the outer cam and the joint link. It is necessary to make contact and rotate the joint link toward the inside of the mold.
[0014]
　As a result of detailed studies by the present inventors, it has been found that the joint link and the outer cam are easily worn in the manufacturing apparatus of Patent Document 1. Specifically, in the manufacturing apparatus of Patent Document 1, since the joint link is provided in the first mold and the outer cam is provided in the second mold, the distance between the center of gravity of the joint link and the center of gravity of the outer cam Becomes larger. For this reason, it becomes difficult to improve the relative positional accuracy between the joint link and the outer cam, and when the joint link and the outer cam come into contact with each other, the joint link and the outer cam are not considered in the design. A directional load may be applied. This makes the joint link and outer cam more susceptible to damage. As a result, it becomes difficult to reduce the maintenance cost of the manufacturing equipment.
[0015]
　An object of the present invention is to provide a holding device capable of suppressing deformation of a molded product at the time of mold release while suppressing maintenance costs.
Means to solve problems
[0016]
　The gist of the present invention is the following holding device.
[0017]
(1) A holding device used by being attached to a mold device,
　wherein the mold device faces a first mold unit having a punch and a holder, a pad arranged to face the punch, and the holder. The first mold unit and the second mold unit are moved in the pressing direction so as to be relatively close to each other, so that the first mold unit and the second mold unit are relatively close to each other. A plate-shaped material arranged between the mold unit and the second mold unit is press-molded, the
　holder is provided so as to be movable in the press direction with respect to the punch, and the
　pad is the pad. The
　holding device is provided so as to be movable in the press direction with respect to the die so that the 　distance member oscillatingly attached to the holder
　and the distance member
attached to the holder can be oscillated. A moving device attached to the first mold unit is provided, and in the
　press direction, the direction from the second mold unit to the first mold unit is defined as the first direction, and vice versa. When the direction is the second direction, in a state where the
　distance member and the swing device are attached to the mold device, the
　distance member does not come into contact with the second mold, and the pad It can swing between the holder and the prevention position that prevents the distance in the pressing direction from becoming less than a predetermined distance.
　The rocking device is a holding device that swings the distance member from the original position toward the prevention position as the holder moves relative to the punch in the first direction.
[0018]
(2) The distance member receives a load in the first direction directly or indirectly from the pad at the prevention position, so that the distance between the pad and the holder in the pressing direction becomes equal to or less than the predetermined distance. The holding device according to (1) above, which prevents this from occurring.
[0019]
(3) The swing device transmits a force for swinging the distance member to the distance member at a position different from a position where the distance member directly or indirectly receives the load from the pad. , The holding device according to (2) above.
[0020]
(4) In the distance member, the distance between the position where the load is received and the swing center is larger than the distance between the position where the force is transmitted from the swing device and the swing center (3). The holding device described in.
[0021]
(5) In the distance member, the distance between the position where the load is received and the swing center is equal to or less than the distance between the position where the force is transmitted from the swing device and the swing center (3). The holding device described in.
[0022]
(6) The rocking device has a repulsive force generating unit and is directly or indirectly fixed to the punch, and the
　distance member moves the holder relative to the punch in the first direction. The repulsive force generating unit is pressed in the first direction, and the
　repulsive force generating unit is pressed in the first direction by the distance member to generate the repulsive force in the second direction.
　The distance member according to any one of (1) to (5) above, wherein the distance member receives a repulsive force in the second direction from the repulsive force generating unit and swings from the original position toward the prevention position. Hold device.
[0023]
(7)
　The method according to any one of (1) to (6) above , further comprising a support member that swingably supports the distance member, and the distance member is attached to the holder via the support member. Hold device.
[0024]
(8) Further provided with a receiving member fixed to the pad so as not to contact the distance member in the original position but to contact the distance member in the prevention position, the
　distance member is said to be in the prevention position. By receiving the load in the first direction from the pad via the receiving member, the distance between the pad and the holder in the pressing direction is prevented from becoming less than the predetermined distance from (1) to (7). ). The holding device according to any one of.
Effect of the invention
[0025]
　According to the present invention, it is possible to suppress the deformation of the molded product at the time of mold release while suppressing the maintenance cost.
A brief description of the drawing
[0026]
FIG. 1 is a diagram showing a schematic configuration of a mold device to which a hold device according to an embodiment of the present invention is attached.
FIG. 2 is a diagram for explaining the operation of the hold device and the mold device of FIG.
FIG. 3 is a diagram for explaining the operation of the hold device and the mold device of FIG.
FIG. 4 is a diagram for explaining the operation of the hold device and the mold device of FIG.
5 is a diagram for explaining the operation of the hold device and the mold device of FIG. 1. FIG.
FIG. 6 is a diagram for explaining the operation of the hold device and the mold device of FIG.
FIG. 7 is a perspective view showing a specific configuration of a mold device to which a hold device according to an embodiment of the present invention is attached.
8 is a cross-sectional view showing the internal structure of the holding device and the mold device of FIG. 7. FIG.
9 is a diagram for explaining the operation of the hold device and the mold device of FIG. 7. FIG.
10 is a diagram for explaining the operation of the hold device and the mold device of FIG. 7. FIG.
11 is a diagram for explaining the operation of the hold device and the mold device of FIG. 7. FIG.
FIG. 12 is a diagram for explaining the operation of the hold device and the mold device of FIG. 7.
13 is a diagram for explaining the operation of the hold device and the mold device of FIG. 7. FIG.
FIG. 14 is a diagram for explaining a modified example of the swinging portion.
FIG. 15 is a diagram for explaining a modification of the swing device.
FIG. 16 is a perspective view showing a mold device to which a hold device according to another embodiment of the present invention is attached.
FIG. 17 is a cross-sectional view showing the internal structure of the holding device and the mold device of FIG.
FIG. 18 is a diagram for explaining the operation of the hold device and the mold device of FIG.
FIG. 19 is a diagram for explaining the operation of the hold device and the mold device of FIG.
FIG. 20 is a diagram for explaining the operation of the hold device and the mold device of FIG.
FIG. 21 is a diagram for explaining the operation of the hold device and the mold device of FIG.
FIG. 22 is a diagram for explaining the operation of the hold device and the mold device of FIG.
FIG. 23 is a diagram showing an example of a pressed part.
FIG. 24 is a diagram showing a donut-shaped component.
FIG. 25 is a diagram showing a cylindrical part.
FIG. 26 is a diagram showing a spherical component.
FIG. 27 is a diagram showing a ring-shaped component.
FIG. 28 is a diagram showing a ring-shaped component.
FIG. 29 is a diagram showing a ring-shaped component.
FIG. 30 is a diagram showing a ring-shaped component.
FIG. 31 is a diagram showing a B-pillar.
FIG. 32 is a diagram showing an A pillar lower.
FIG. 33 is a diagram showing a front side member.
FIG. 34 is a diagram showing a roof rail.
Mode for carrying out the invention
[0027]
(Outline of Mold Device)
　Hereinafter, a hold device according to an embodiment of the present invention and a mold device to which the hold device is attached will be described with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of a hold device and a mold device according to an embodiment of the present invention. 2 to 6 are diagrams for explaining the operation of the hold device and the mold device of FIG. 1. 1 to 6 are provided with arrows indicating the X and Z directions orthogonal to each other. In the present specification, the X direction is the width direction of the mold device. The Z direction is the vertical direction. In the following, the X direction is described as the width direction X, and the Z direction is described as the vertical direction Z.
[0028]
　As shown in FIG. 1, the mold apparatus 100 includes a first mold (lower mold) unit 20 and a second mold (upper mold) unit 22. Although detailed description is omitted, the die device 100 is used by being attached to, for example, a known press machine (not shown). The hold device 1 according to the embodiment of the present invention is attached to the first mold unit 20. Although the details will be described later, the hold device 1 includes a distance member 24, a support member 25, and a swing device 26. In the following, the hold device 1 and the mold device 100 for manufacturing the press part 200 having a cross-sectional hat shape (see FIG. 6 described later) from the plate-shaped material 300 will be described, but the hold according to the present invention will be described. The pressed parts manufactured by using the device 1 are not limited to the pressed parts 200 shown in FIG. Further, the configuration and operation of the hold device according to the present invention and the configuration and operation of the mold device to which the hold device according to the present invention is attached are not limited to the following embodiments, and the configuration and operation of the hold device and the mold device are , It is appropriately changed depending on the shape of the pressed part to be manufactured.
[0029]
　The first mold unit 20 and the second mold unit 22 are arranged so as to face each other in the vertical direction Z. The mold device 100 according to the present embodiment moves in the pressing direction so that the first mold unit 20 and the second mold unit 22 are relatively close to each other, so that the first mold unit 20 and the second mold unit 20 are relatively close to each other. This is an apparatus for press-molding a plate-shaped material 300 arranged between the mold unit 22 and the mold unit 22.
[0030]
　In this embodiment, the vertical direction Z corresponds to the press direction. Further, in the present embodiment, in the pressing direction, the direction from the second mold unit 22 to the first mold unit 20 is the first direction Z1, and the direction from the first mold unit 20 to the second mold unit 22. Is the second direction Z2.
[0031]
　The first mold unit 20 includes a punch 32 and a holder 34. The second mold unit 22 includes a die 36 and a pad 38. In the vertical direction Z, the die 36 is provided so as to face the holder 34, and the pad 38 is provided so as to face the punch 32. The holder 34 is provided so as to be movable in the vertical direction Z with respect to the punch 32, and the pad 38 is provided so as to be movable in the vertical direction Z with respect to the die 36.
[0032]
　The distance member 24 of the hold device 1 is configured to be attachable and detachable to the holder 34. In the present embodiment, the distance member 24 is used by being attached to the holder 34 in a swingable state via the support member 25. More specifically, the distance member 24 is swingably supported by the support member 25, and the support member 25 is attached to the holder 34. The distance member 24 moves in the vertical direction Z in conjunction with the movement of the holder 34 in the vertical direction Z.
[0033]
　In the present embodiment, the distance member 24 swings between the original position (position shown in FIG. 1) that does not contact the second mold unit 22 and the prevention position (position shown in FIGS. 4 and 5) described later. It is attached to the holder 34 so that it can be attached. Although the details will be described later, in the in-situ position, no load is applied from the second mold unit 22 to the distance member 24. On the other hand, in the prevention position, a load in the first direction Z1 is applied to the distance member 24 from the pad 38 of the second mold unit 22.
[0034]
　The rocking device 26 is configured to be attachable and detachable to the first mold unit 20. In the present embodiment, the rocking device 26 is used by being attached to the first mold unit 20 so that the distance member 24 can be rocked. The rocking device 26 moves the distance member 24 from the original position (position shown in FIG. 1) to the prevention position (FIGS. 4 and 5) as the holder 34 moves relative to the punch 32 in the first direction Z1. It is a device that swings toward the indicated position). In FIG. 1, the rocking device 26 is attached to the punch 32, but the rocking device 26 may be attached to any component of the first mold unit 20.
[0035]
　Hereinafter, an example of the operation of the hold device 1 and the mold device 100 when press forming the material 300 will be briefly described. When press molding is performed using the mold device 100 to which the hold device 1 is attached, first, as shown in FIG. 1, a plate-shaped material 300 is arranged on the punch 32 and the holder 34. At this time, the first mold unit 20 and the second mold unit 22 are separated from each other in the vertical direction Z. In FIG. 1, each component of the hold device 1 and the mold device 100 is in the original position. The distance member 24 is separated from the second mold unit 22 in the original position. In other words, in the in-situ position, the distance member 24 is not loaded by the second mold unit 22.
[0036]
　Next, as shown in FIGS. 2 and 3, the first mold unit 20 and the second mold unit 22 move in the direction of approaching each other in the vertical direction Z. Specifically, first, as shown in FIG. 2, the die 36 of the second mold unit 22 moves relative to the first mold unit 20 in the first direction Z1. As a result, the material 300 is sandwiched between the punch 32 and the holder 34, and the pad 38 and the die 36. In FIG. 2, the distance member 24 is in the original position.
[0037]
　As shown in FIG. 3, the die 36 is further moved relative to the first direction Z1 with respect to the first mold unit 20, so that the holder 34 and the die 36 are relative to the punch 32 and the pad 38. Moves to the first direction Z1. As a result, molding is started on the material 300.
[0038]
　As shown in FIG. 4, with respect to the punch 32 and the pad 38, the holder 34 and the die 36 further move in the first direction Z1 and reach the bottom dead center of molding (molding completion position) to reach a predetermined molding height. The pressed part 200 is obtained. Further, as shown in FIGS. 3 and 4, as the holder 34 moves relative to the punch 32 in the first direction Z1, the swing device 26 of the hold device 1 moves the distance member 24 from the original position. Swing toward the prevention position.
[0039]
　In the state shown in FIG. 4, the movement of the pad 38 in the first direction Z1 relative to the holder 34 is regulated by the distance member 24. As a result, the distance between the holder 34 and the pad 38 in the vertical direction Z is maintained at a predetermined molding height or more. In other words, in the state shown in FIG. 4, the distance member 24 prevents the distance between the holder 34 and the pad 38 in the vertical direction Z from becoming a predetermined distance or less. In the present embodiment, the position (position shown in FIG. 4) of the distance member 24 that prevents the distance between the holder 34 and the pad 38 in the vertical direction Z from becoming less than a predetermined distance is referred to as a prevention position. In the preventive position, the distance member 24 receives a load from the pad 38 in the first direction Z1 by being connected to the pad 38. In FIG. 4, the distance member 24 is in contact with the pad 38 at the prevention position, but may be indirectly connected to the pad 38 via another member. That is, the distance member 24 may receive the load from the pad 38 in the first direction Z1 directly from the pad 38 or indirectly via another member. In the following, the function of the hold device that prevents the distance between the holder and the pad from becoming less than a predetermined distance is referred to as a locking function, and the operation of the hold device that prevents the distance between the holder and the pad from becoming less than a predetermined distance. Is called a locking operation.
[0040]
　Next, as shown in FIG. 5, the holder 34 and the pad 38 move relative to the punch 32 in the second direction Z2 together with the die 36. As a result, the punch 32 moves relative to the pad 38 in the first direction Z1. In other words, the punch 32 moves away from the pad 38.
[0041]
　Finally, as shown in FIG. 6, the first die unit 20 and the second die unit 22 are further separated in the vertical direction Z, and the press component 200 is taken out. Here, as described above, the distance between the holder 34 and the pad 38 in the vertical direction Z is held by the distance member 24 of the hold device 1 to be equal to or higher than a predetermined molding height. In other words, the pressure applied from the holder 34 to the second direction Z2 and the pressure applied from the pad 38 to the first direction Z1 are both received by the distance member 24. As a result, it is possible to prevent a large pressure from being applied to the pressed component 200 from the holder 34 and the pad 38. As a result, it is possible to prevent the pressed part 200 from being deformed at the time of mold release.
[0042]
　As described above, in the hold device 1 according to the present embodiment, both the distance member 24 and the swing device 26 are configured to be attached to the first mold unit 20. Therefore, the distance between the center of gravity of the distance member 24 and the center of gravity of the rocking device 26 in the vertical direction Z can be reduced as compared with the case where the rocking device 26 is attached to the second mold unit 22. As a result, when the distance member 24 and the swing device 26 are attached to the first mold unit 20, the relative positional accuracy between the distance member 24 and the swing device 26 can be improved. Therefore, when the force is transmitted from the swing device 26 to the distance member 24 (when swinging the distance member 24), the load in the direction not considered in the design is applied to the distance member 24 and the swing device 26. Can be sufficiently suppressed from being loaded. As a result, damage to the distance member 24 and the swing device 26 can be sufficiently suppressed. That is, the maintenance cost of the hold device 1 can be suppressed.
[0043]
　Further, by reducing the distance between the center of gravity of the distance member 24 and the center of gravity of the rocking device 26, the distance member 24 can be swung by a small operation of the rocking device 26. Therefore, the rocking device 26 itself can be made compact. In this case, the distance between the center of gravity of the rocking device 26 and the mounting position of the rocking device 26 on the first mold unit 20 can be reduced. As a result, when the force is transmitted from the swing device 26 to the distance member 24, the moment of force applied from the distance member 24 to the swing device 26 can be reduced. As a result, damage to the swing device 26 can be sufficiently suppressed.
[0044]
　Further, by making the swing device 26 smaller, it is possible to improve the accuracy of assembling the swing device 26 to the first mold unit 20. As a result, when the distance member 24 and the swing device 26 come into contact with each other, it is possible to prevent an unnecessary load due to misalignment from being applied to the distance member 24 and the swing device 26. As a result, the distance member 24 can be smoothly swung with a small amount of power, and damage to the distance member 24 and the swing device 26 can be sufficiently suppressed.
[0045]
　Further, since the operating range and configuration of the swing device 26 can be reduced, the degree of freedom in designing the mold device 100 itself is increased. This makes it possible to appropriately use the hold device 1 even in a transfer type press machine in which there are strict requirements for the dimensions and configuration of the outer portion of the die device.
[0046]
　Further, the hold device 1 according to the present embodiment is configured to be attachable to and detachable from the mold device 100. Therefore, by preparing the spare hold device 1, even if any component of the hold device 1 fails, the operation of the mold device 100 can be continued by replacing the spare hold device 1 with the spare hold device 1. can do. For example, even if an unexpected failure occurs in the hold device 1, it is possible to quickly respond to the failure by replacing the hold device 1.
[0047]
　Further, in the present embodiment, the locking function is exhibited by the hold device 1. Therefore, by appropriately adjusting the hold device 1 when assembling the hold device 1 to the die device 100, it becomes easy to adjust the locking operation when assembling the die device 100 to the press machine.
[0048]
　Further, in the present embodiment, the mold device 100 may be configured so that the hold device 1 can be attached and detached, and the configuration of an essential part of the mold device 100 includes a known mold device configuration. Can be used. For example, the hold device 1 can be attached to the existing mold device 100 and used by performing a simple process for attaching the hold device 1 to the existing mold device 100. As a result, the manufacturing cost of the mold apparatus 100 can be suppressed.
[0049]
　Further, in the present embodiment, the assembly adjustment of the hold device 1 can be performed separately from the assembly adjustment of the die device 100 to the press machine. For example, the hold device 1 can be assembled to the die device 100 before the die device 100 is assembled to the press machine. As a result, the assembly accuracy of the hold device 1 can be easily improved.
[0050]
　Further, since the hold device 1 can be removed from the mold device 100, the maintenance of the hold device 1 becomes easy.
[0051]
　Further, in the present embodiment, all or a part of the components of the hold device 1 can be reused when the mold device is updated or when the configuration of the mold device is changed. As a result, the running cost can be reduced.
[0052]
　Further, in the present embodiment, when designing the mold device 100, it is necessary to consider the arrangement and mounting structure of the hold device 1, but it is not necessary to study the locking function in detail. Further, in the present embodiment, for example, the hold devices 1 can be serialized according to a predetermined condition such as a press load, and design data of a plurality of hold devices 1 can be held for each series. In this case, for example, after designing the mold device 100, an appropriate hold device 1 can be selected from the series corresponding to the mold device 100 according to the dimensions of the material 300 and the like. As a result, the hold device 1 and the mold device 100 can be combined appropriately and easily. As a result, the design man-hours of the mold device 100 can be reduced as compared with the case where the hold device 1 and the mold device 100 are integrally designed.
[0053]
(Specific Configuration of Hold Device and Mold Device)
　Hereinafter, a specific configuration of the hold device and the mold device to which the hold device according to the embodiment of the present invention is attached will be described with reference to the drawings. FIG. 7 is a perspective view showing a specific configuration of a hold device according to an embodiment of the present invention and a mold device to which the hold device is attached. FIG. 7 is provided with arrows indicating the X, Y, and Z directions that are orthogonal to each other. In the present specification, the X direction is the width direction of the mold device, and the Y direction is the length direction of the mold device. The Z direction is the vertical direction. In the following, the X direction is described as the width direction X, the Y direction is described as the length direction Y, and the Z direction is described as the vertical direction Z. 8 to 13 which will be described later also show arrows indicating the width direction X and the vertical direction Z.
[0054]
　FIG. 8 is a cross-sectional view showing the internal structure of the mold apparatus of FIG. In addition, in FIG. 8 and FIGS. 9 to 13 described later, a cross section perpendicular to the length direction of the mold apparatus is shown.
[0055]
　In the following, as an example, a hold device 1a and a die device 100a for manufacturing a pressed part 200 having a cross-sectional hat shape (see FIG. 13 described later) will be described.
[0056]
　As shown in FIGS. 7 and 8, the mold device 100a includes a first mold (lower mold) unit 20, a second mold (upper mold) unit 22, and a stopper device 30.
[0057]
　The first mold unit 20 and the second mold unit 22 are arranged so as to face each other in the vertical direction Z. The mold device 100a according to the present embodiment moves in the pressing direction so that the first mold unit 20 and the second mold unit 22 are relatively close to each other, so that the first mold unit 20 and the second mold unit 20 and the second mold unit 22 are relatively close to each other. This is an apparatus for press-molding a plate-shaped material 300 arranged between the mold unit 22 and the mold unit 22.
[0058]
　In this embodiment, the vertical direction Z corresponds to the press direction. Further, in the present embodiment, in the pressing direction, the direction from the second mold unit 22 to the first mold unit 20 is the first direction Z1, and the direction from the first mold unit 20 to the second mold unit 22. Is the second direction Z2.
[0059]
　The first mold unit 20 includes a punch 32 and a holder 34. The punch 32 has a base portion 32a fixed to a bolster of a press machine (not shown), and a punch body portion 32b protruding from the base portion 32a in the second direction Z2 (upward). In the present embodiment, a convex portion 32c having a rectangular shape in a plan view is formed in the central portion of the base portion 32a, and a punch main body portion 32b is provided so as to project from the convex portion 32c in the second direction Z2.
[0060]
　The holder 34 has a hollow and rectangular shape in a plan view. The punch body portion 32b of the punch 32 is provided so as to penetrate the holder 34 in the vertical direction Z. In the present embodiment, the holder 34 is provided so as to be movable in the vertical direction Z with respect to the punch main body portion 32b. Further, the holder 34 is supported by a plurality of support pins 35 extending in the vertical direction Z.
[0061]
　The plurality of support pins 35 are provided so as to penetrate the base portion 32a of the punch 32 in the vertical direction Z and movable in the vertical direction Z with respect to the punch 32. In the present embodiment, a force F1 in the first direction Z1 is applied to the holder 34 from a die cushion device of a press machine (not shown) via a plurality of support pins 35. As a result, the holder 34 is urged toward the second mold unit 22. Although detailed description is omitted, the holder 34 may be urged by using another device such as a gas spring device or a coil spring built in the punch 32 instead of the support pin 35 and the die cushion device. ..
[0062]
　In the present embodiment, the movement of the holder 34 is restricted so that the holder 34 does not protrude from the punch body portion 32b in the second direction Z2. Further, in the present embodiment, in a state where the force of the first direction Z1 is not applied from the second mold unit 22 to the holder 34 (the original positions of the punch 32 and the holder 34), the upper surface of the punch main body 32b and the holder 34 The punch 32 and the holder 34 are provided so that the height is equal to the upper surface of the die. However, the positional relationship between the punch and the holder can be appropriately changed according to the shape and the like of the pressed parts to be manufactured.
[0063]
　In the present embodiment, the hold device 1a is attached to the first mold unit 20 and the second mold unit 22. Specifically, the hold device 1a has a plurality of distance members 24, a plurality of support members 25, a plurality of swinging devices 26, and a plurality of support members 27 as components attached to the first mold unit 20. And a plurality of return devices 28. Further, the hold device 1a has a plurality of receiving members 39 as components to be attached to the second mold unit 22.
[0064]
　A plurality of support members 25 of the hold device 1a are fixed to the side surface of the holder 34. In the present embodiment, the two support members 25 are fixed to one side of the holder 34 in the width direction X, and the other two support members 25 are fixed to the other side of the holder 34 in the width direction X. The support member 25 is fixed to the holder 34 by, for example, a fastening member such as a bolt. In the present embodiment, for example, a through hole for passing a bolt in the width direction X is formed in the support member 25, and a bolt hole for screwing the bolt in the width direction X is formed in the holder 34. Then, the support member 25 can be fixed to the holder 34 by screwing a bolt into the holder 34 from the outside of the mold device 100a so as to penetrate the support member 25. In the present embodiment, for example, when a component (swinging portion 24a or the like) of the holding device 1a is worn, the holding device 1a is formed by sandwiching a shim plate or the like between the bolt and the support member 25. The position of the components of is adjustable. Each support member 25 is formed with a recess 25a having a substantially arcuate cross section so as to open in the second direction Z2.
[0065]
　In this embodiment, the hold device 1a has four distance members 24. Each distance member 24 has a rod-shaped rocking portion 24a, a pair of plate-shaped arm portions 24b, and a pair of columnar pressing portions 24c. One end (lower end) of the swing portion 24a is fitted into the recess 25a of the support member 25 so as to be swingable in the width direction X. As a result, the swing portion 24a is supported by the support member 25 so as to be swingable in the width direction X with the lower end portion as the swing center. That is, the swinging portion 24a is swingably attached to the holder 34 via the support member 25. In the present embodiment, the distance member 24 swings between the original position (position shown in FIG. 8) that does not contact the second mold unit 22 and the prevention position (position shown in FIGS. 11 and 12) described later. It is attached to the holder 34 so that it can be used. Although detailed description will be omitted, the swinging portion 24a may be swingably (rotatably) supported by the support member 25 via a support shaft extending in the length direction Y.
[0066]
　One end of the pair of arm portions 24b in the width direction X is fixed to the lower end portion of the swing portion 24a. Pressing portions 24c are fixed to the other ends of the pair of arm portions 24b in the width direction X, respectively.
[0067]
　In this embodiment, the hold device 1a has four swing devices 26, four support members 27, and four return devices 28 so as to correspond to the four distance members 24. Each rocking device 26 has a pair of elastic members 26a and a pair of transmission members 26b. In this embodiment, the elastic member 26a is a coil spring. Hereinafter, the elastic member 26a will be referred to as a coil spring 26a.
[0068]
　The transmission member 26b has a shaft portion 6a extending in the vertical direction Z, a flange portion 6b provided at the upper end portion of the shaft portion 6a, and a flange portion 6c provided at the lower end portion of the shaft portion 6a. The transmission member 26b is inserted into the support member 27 so as to be movable in the vertical direction. A coil spring 26a is fitted on the outside of the shaft portion 6a so as to be sandwiched between the flange portion 6b and the support member 27. The coil spring 26a is provided so as to push the flange portion 6b toward the second direction Z2 (upward). In the present embodiment, the flange portion 6c is locked to the support member 27, so that the transmission member 26b is restricted from moving in the second direction Z2. The support member 27 is fixed to the punch 32 by, for example, a fastening member such as a bolt. That is, in the present embodiment, the swing device 26 is attached to the first mold unit 20 via the support member 27.
[0069]
　In the present embodiment, the rocking device 26 is provided so that the pressing portion 24c is located on the flange portion 6b at the original position of the distance member 24. In the original position of the distance member 24, the flange portion 6b and the pressing portion 24c may be in contact with each other, or the flange portion 6b and the pressing portion 24c may be separated from each other in the vertical direction Z. However, even when the flange portion 6b and the pressing portion 24c are separated, it is preferable that the distance between the flange portion 6b and the pressing portion 24c in the vertical direction Z is small.
[0070]
　Although details will be described later, the rocking device 26 moves the distance member 24 from the original position (position shown in FIG. 8) to the prevention position (as the holder 34 moves relative to the punch 32 in the first direction Z1. It is a device that swings toward (positions shown in FIGS. 11 and 12).
[0071]
　In this embodiment, each return device 28 is provided on the support member 25. Although detailed description will be omitted, the return device 28 includes a coil spring, is connected to the distance member 24, and urges the distance member 24 to return to the original position.
[0072]
　The second mold unit 22 includes a die 36 and a pad 38. The die 36 has a base portion 36a fixed to a slide of a press machine (not shown), and a die main body portion 36b protruding from the base portion 36a in the first direction Z1 (downward). The die main body 36b has a hollow and rectangular shape when viewed from below. The die main body 36b is provided so as to face the holder 34 in the vertical direction Z.
[0073]
　The pads 38 include a pad body 38a extending in the length direction Y inside the die body 36b, and a plurality of pads 38 extending in the width direction X from the pad body 38a so as to penetrate the die body 36b (four in the present embodiment). ) With the arm portion 38b. The pad body 38a is provided so as to face the punch body 32b of the punch 32 in the vertical direction Z.
[0074]
　On the outside of the die body 36b, a receiving member 39 of the hold device 1a is attached to the tip of each arm 38b. In the present embodiment, the receiving member 39 is fixed to the arm portion 38b by, for example, a fastening member such as a bolt. As the configuration for attaching the receiving member 39 to the arm portion 38b, the same configuration as for attaching the support member 25 to the holder 34 can be adopted, so detailed description thereof will be omitted. The receiving member 39 has a substantially rectangular shape when viewed from the length direction Y and has a locking portion 39a fixed to the arm portion 38b, and a catcher portion 39b extending downward from the locking portion 39a. The locking portion 39a is provided so as to face the support member 25 of the holding device 1a in the vertical direction Z.
[0075]
　As shown in FIG. 8, a plurality of urging devices 40 are provided between the base portion 36a of the die 36 and the pad main body portion 38a of the pad 38. In the present embodiment, the urging device 40 includes, for example, a gas spring, and applies a force F2 in the second direction Z2 to the pad main body 38a. As a result, the pad 38 is urged toward the first mold unit 20. As the urging device 40, another device such as a coil spring may be used instead of the gas spring.
[0076]
　In the present embodiment, the die 36 and the pad 38 are provided so that the lower surface of the die body 36b and the lower surface of the pad body 38a are at equal heights at the original positions of the die 36 and the pad 38. The positional relationship between the die and the pad can be appropriately changed according to the shape and the like of the pressed parts to be manufactured.
[0077]
　A stopper device 30 is provided at the locking portion 39a of each receiving member 39. Although detailed description is omitted, the stopper device 30 refers to the holding member 30b and the holding member 30b that hold the stopper member 30a so as to be movable in the vertical direction Z between the stopper member 30a and the locking portion 39a. It has an elastic member 30c that urges the stopper member 30a downward. The stopper member 30a is provided so as to project in the first direction Z1 (downward) from the locking portion 39a at the original position.
[0078]
(Operations of Hold Device and Mold Device)
　Next, operations of the hold device 1a and the mold device 100a will be described. 9 to 13 are diagrams for explaining a method of manufacturing a pressed part by a holding device and a mold device. In the present embodiment, the pressed parts are manufactured from the raw material by carrying out the first to fifth steps described below.
[0079]
(First Step) As
　shown in FIG. 8, first, the plate-shaped material 300 is arranged on the punch 32 and the holder 34. At this time, the first mold unit 20 and the second mold unit 22 are separated in the vertical direction Z. In the first step, each component of the hold device 1a and the mold device 100a is in the in-situ state. The distance member 24 is separated from the second mold unit 22 in the original position. Further, in the original position, the upper end portion of the swing portion 24a of the distance member 24 is located outside the locking portion 39a of the receiving member 39 in the width direction X. Further, in the original position, the upper end portion of the swing portion 24a and the lower end portion of the stopper member 30a face each other in the vertical direction Z.
[0080]
　As the material 300, for example, a high-strength material having a tensile strength of 590 to 1600 MPa can be used.
[0081]
(Second Step)
　Next, as shown in FIGS. 9 and 10, the first mold unit 20 and the second mold unit 22 move in the direction of approaching each other in the vertical direction Z. Specifically, first, as shown in FIG. 9, the second mold unit 22 (die 36) is relatively moved in the first direction Z1 with respect to the first mold unit 20 by a press machine (not shown). .. As a result, the material 300 is sandwiched between the punch 32 (punch body 32b) and the holder 34, and the pad 38 (pad body 38a) and the die 36 (die body 36b). Further, the stopper member 30a of each stopper device 30 moves in the second direction Z2 relative to the locking portion 39a of the receiving member 39 by being pushed by the swinging portion 24a. In FIG. 9, the distance member 24 is in the original position.
[0082]
　As shown in FIG. 10, the die 36 is further moved relative to the first direction Z1 with respect to the first mold unit 20, so that the holder 34 and the die 36 are relative to the punch 32 and the pad 38. Moves to the first direction Z1. As a result, molding is started on the material 300. Specifically, of the material 300, the central portion (the punch main body 32b and the pad main body) in the width X is relative to both ends (the portion sandwiched between the holder 34 and the die main body 36b) in the width direction X. The portion sandwiched by 38a) is pushed out toward the second direction Z2.
[0083]
　Further, as the holder 34 moves relative to the punch 32 in the first direction Z1, the distance member 24 attached to the holder 34 via the support member 25 is attached to the punch 32 via the support member 27. It moves in the first direction Z1 relative to the rocking device 26. As a result, the transmission member 26b is pushed in the first direction Z1 by the pressing portion 24c, and the coil spring 26a is compressed. As a result, in the coil spring 26a, a repulsive force that pushes the transmission member 26b in the second direction Z2 is generated. That is, in the present embodiment, the coil spring (elastic member) 26a generates a repulsive force that generates a repulsive force in the second direction Z2 by being pressed against the Z1 in the first direction by the distance member 24 via the transmission member 26b. Functions as a department. The repulsive force in the second direction Z2 generated in the coil spring 26a is transmitted to the pressing portion 24c of the distance member 24 via the transmission member 26b. As a result, the force that causes the distance member 24 to swing (rotate) toward the inside of the mold device 100a with the lower end of the swing portion 24a as the swing center is applied from the swing device 26 to the distance member 24. Given. However, immediately after the start of molding on the material 300, the movement of the swinging portion 24a toward the inside of the mold device 100a is restricted by the locking portion 39a. That is, the locking portion 39a regulates the inward swing of the distance member 24.
[0084]
(Third Step) As
　shown in FIG. 11, the holder 34 and the die 36 are further moved in the first direction Z1 with respect to the punch 32 and the pad 38 to reach the bottom dead center of molding (molding completion position). , A pressed part 200 having a predetermined molding height is obtained. At this time, the distance member 24 moves in the first direction Z1 together with the holder 34, so that the repulsive force in the second direction Z2 generated in the rocking device 26 increases. That is, the force for swinging the distance member 24 toward the inside of the mold device 100a increases. In this state, the distance between the holder 34 and the receiving member 39 (locking portion 39a) in the vertical direction Z increases, so that the swinging portion 24a can be moved inward, and the distance member 24 becomes a mold device. It swings instantly toward the inside of 100a.
[0085]
　When the swinging portion 24a swings to a position where it contacts the catcher portion 39b, the stopper member 30a moves in the first direction Z1 by being pushed by the elastic member 30c. As a result, the swinging portion 24a is sandwiched between the catcher portion 39b and the stopper member 30a. As a result, the swing of the swing portion 24a is restricted. That is, the swing of the distance member 24 is regulated.
[0086]
　Further, in the state shown in FIG. 11, the movement of the pad 38 in the first direction Z1 relative to the holder 34 is regulated by the swing portion 24a of the distance member 24. As a result, the distance between the holder 34 and the pad body 38a in the vertical direction Z is maintained at or above a predetermined molding height. In other words, in the state shown in FIG. 11, the distance member 24 prevents the distance between the holder 34 and the pad 38 in the vertical direction Z from becoming a predetermined distance or less. In the present embodiment, the position (position shown in FIG. 11) of the distance member 24 that prevents the distance between the holder 34 and the pad 38 in the vertical direction Z from becoming less than a predetermined distance is referred to as a prevention position.
[0087]
(Fourth Step)
　Next, as shown in FIG. 12, the die 36 moves relative to the first mold unit 20 in the second direction Z2. As a result, the holder 34 and the pad 38 move relative to the punch 32 in the second direction Z2 together with the die 36. As a result, the punch body 32b of the punch 32 moves relative to the pad body 38a of the pad 38 in the first direction Z1. In other words, the punch main body 32b moves relatively in the direction away from the pad main body 38a.
[0088]
　Here, as described above, the distance between the holder 34 and the pad main body 38a in the vertical direction Z is held by the swinging portion 24a of the distance member 24 to be equal to or higher than a predetermined molding height. In other words, both the pressure applied from the holder 34 to the second direction Z2 and the pressure applied from the pad 38 to the first direction Z1 are received by the swing portion 24a of the distance member 24. As a result, it is possible to prevent a large pressure from being applied to the pressed component 200 from the holder 34 and the pad 38. As a result, it is possible to prevent the pressed part 200 from being deformed at the time of mold release.
[0089]
(Fifth Step)
　Finally, as shown in FIG. 13, the first die unit 20 and the second die unit 22 are further separated in the vertical direction Z, and the pressed part 200 is taken out. At this time, the distance member 24 is returned to its original position by the return device 28.
[0090]
(Effect of the present embodiment)
　As described above, in the hold device 1a according to the present embodiment, both the distance member 24 and the swing device 26 are attached to the first mold unit 20 in the same manner as the above-mentioned hold device 1. It is configured to be. Therefore, by using the hold device 1a as in the hold device 1 described above, damage to the distance member 24 and the swing device 26 can be sufficiently suppressed. Further, similarly to the above-mentioned hold device 1, the hold device 1a can be appropriately used in a transfer type press machine.
[0091]
　Further, each component of the hold device 1a according to the present embodiment is configured to be attachable to and detachable from the mold device 100a, similarly to the hold device 1 described above. Therefore, by preparing a spare hold device 1a, even if any component of the hold device 1a fails, the failure can be quickly dealt with by replacing the component. It will be possible.
[0092]
　Further, although detailed description is omitted, similarly to the above-described hold device 1, in the present embodiment as well, the locking operation can be easily adjusted when the die device 100a is assembled to the press machine, and the assembly accuracy of the hold device 1a can be adjusted. Can be easily improved, the hold device 1a can be easily maintained, the running cost can be reduced, and the design man-hours for the mold device 100a can be reduced.
[0093]
　Further, in the present embodiment, the mold device 100a may be configured so that the holding device 1a can be attached and detached, and the configuration of the essential part of the mold device 100a includes a known mold device configuration. Can be used. As a result, the manufacturing cost of the mold apparatus 100a can be suppressed.
[0094]
　Further, when the swing device is provided in the second mold unit 22, it is necessary to provide a member (for example, the outer cam of Patent Document 1) that can cover the distance member 24 from the outside. In this regard, in the present embodiment, the distance member 24 can be swung to the preventive position by pushing the distance member 24 in the second direction Z2 by the swing device 26. In this case, since the configuration of the swing device 26 can be simplified, the mold device 100a can be miniaturized.
[0095]
　Further, in the present embodiment, the swing device 26 generates a force for swinging the distance member 24 by the coil spring 26a. In this case, it is possible to generate a sufficient force while making the swing device 26 compact. Further, by using the coil spring 26a, the forming cycle of the pressed part 200 can be shortened, and the productivity can be improved. Moreover, since the control of the swing device 26 is unnecessary, the production cost can be reduced.
[0096]
　Further, in the hold device 1a according to the present embodiment, the swing device 26 receives a force for swinging the distance member 24 at a position where the distance member 24 receives a load from the pad 38 (in the present embodiment, the receiving member 39). It is transmitted to the distance member 24 at a position (pressing portion 24c in this embodiment) different from (the upper end portion of the swinging portion 24a in contact with the). In this case, damage to the distance member 24 can be sufficiently suppressed as compared with the case where the position where the load is received and the position where the force for swinging is transmitted are the same position on the distance member 24.
[0097]
　Further, in the hold device according to the present embodiment, for example, as shown in FIG. 14, the angle of the swing portion 24a at the in-situ position may be changed. Specifically, in the original position, the position of the upper end of the swing portion 24a may be adjusted to a height substantially equal to the upper surface of the holder 34 and the punch 32. In this case, for example, when the hold device is used in a transfer type press machine, the material 300 can be easily arranged and the pressed parts 200 can be taken out easily, and the manufacturing efficiency can be improved.
[0098]
　In the distance member 24, the distance between the position where the load is received and the swing center may be set larger than the distance between the position where the force for swinging is transmitted and the swing center. In this case, the distance member 24 can be quickly moved from the original position to the preventive position. On the other hand, in the distance member 24, the distance between the position where the load is received and the swing center may be set to be equal to or less than the distance between the position where the force for swinging is transmitted and the swing center. In this case, the distance member 24 can be swung with a small force.
[0099]
　In the above-described embodiment, the case where the rocking device 26 is attached to the punch 32 has been described, but the rocking device may be attached to a component of the first mold unit other than the punch 32. For example, the rocking device may be attached to another component fixed to the bolster.
[0100]
　The configuration of the rocking device is not limited to the above example, and the rocking device moves the distance member from the original position to the prevention position as the holder moves relative to the punch in the first direction. It suffices if it is configured to swing. Therefore, for example, an actuator such as an air cylinder, a hydraulic cylinder, an electric cylinder, or an electric motor may be used as the swing device. When an actuator is used as the swinging device, for example, the swinging device is attached to the support member 25 or the holder 34, and the rotating shaft connected to the distance member is rotated by the swinging device to swing the distance member. May be good. When an actuator is used as the swing device as described above, the actuator can also function as a return device. In this case, the configuration of the mold apparatus can be further simplified. Further, in the above-described embodiment, the case where the coil spring is used as the repulsive force generating part of the rocking device has been described, but the repulsive force generating part includes a tension spring, a torsion coil spring, a leaf spring, a rubber, an accumulator, and a gas spring. Etc. may be used alone or in combination. For example, as in the swing device 26 shown in FIG. 15, a gas spring 60 embedded in the support member 27 may be used instead of the coil spring 26a (see FIG. 8). In this case, the gas spring 60 is pressed in the first direction Z1 by the distance member 24 via the transmission member 26b to generate a repulsive force in the second direction Z2. As a result, the transmission member 26b is urged in the second direction Z2.
[0101]
　Further, in the above-described embodiment, the case where the hold device 1a has the four distance members 24 and the four swing devices 26 has been described, but the number of the distance members 24 and the swing devices 26 is three or less. It may be 5 or more. Specifically, the number and arrangement of the distance member 24 and the swinging device 26 can be appropriately changed in consideration of molding conditions such as a press load and a load distribution.
[0102]
　Further, the shape of the swing portion 24a is not limited to the above example. Specifically, the swinging portion 24a does not have to be rod-shaped. Further, the configuration of the support member 25 is not limited to the above example, and the support member 25 may have a configuration in which the distance member 24 can be swingably attached to the holder 34. Further, the support member 27 may also have a configuration in which the swing device 26 can be attached to the first mold unit 20.
[0103]
　Further, in the above-described embodiment, the distance member 24 receives a load from the pad 38 via the receiving member 39 at the prevention position, so that the distance between the pad 38 and the holder 34 in the vertical direction Z becomes a predetermined distance or less. It is prevented from becoming. However, the distance member may prevent the distance between the pad and the holder in the vertical direction Z from becoming less than a predetermined distance by directly receiving the load from the pad at the prevention position. In this case, for example, the pad 38 and the receiving member 39 shown in FIG. 8 may be integrally formed as a pad.
[0104]
　Further, in the above-mentioned hold device 1a, the return device 28 is used to return the distance member 24 to the original position, but instead of the return device 28, for example, as in the hold device 1b shown in FIGS. 16 and 17. The weight portion 50 may be attached to the distance member 24, and the distance member 24 may be returned to its original position by the weight of the distance member 24. Further, although detailed description will be omitted, the return device may be configured by using a torsion coil spring, or may be configured by using an actuator such as an air cylinder, a hydraulic cylinder, an electric cylinder or an electric motor.
[0105]
　Further, in the above-mentioned mold device 100a, in order to surely regulate the swing of the distance member 24 at the prevention position, the catcher portion 39b is formed on the receiving member 39, and the stopper device 30 is provided on the receiving member 39. .. However, if the distance member 24 can be prevented from swinging by sandwiching the distance member 24 between the support member 25 and the receiving member 39 at the prevention position, the catcher portion is as shown in the mold device 100b shown in FIGS. 16 and 17. The 39b and the stopper device 30 may not be provided.
[0106]
　Although detailed description is omitted, as shown in FIGS. 17 to 22, when the hold device is used in the mold device 100b, the same process as in the case of using the hold device in the mold device 100a described above is carried out. By doing so, the pressed part 200 can be manufactured from the material 300.
[0107]
　The present invention can be applied to various shapes of pressed parts, various pressing methods, and various materials. For example, the present invention can also be used when manufacturing the pressed part 10 shown in FIG. 23. With reference to FIG. 23, the pressed component 10 has a hat-shaped cross-sectional shape. The pressed component 10 has a top plate 11, vertical walls 12a and 12b extending in the vertical direction, and flanges 13a and 13b. The upper ends of the vertical walls 12a and 12b are connected to the top plate 11 via ridges 14a and 14b that are curved so as to be convex toward the outside of the press component 10. Further, the lower ends of the vertical walls 12a and 12b are connected to the flanges 13a and 13b via ridges 15a and 15b that are recessed toward the inside of the press component 10. The pressed component 10 has curved portions 16 and 17 that are curved in the height direction of the vertical walls 12a and 12b when viewed from the normal direction of the vertical walls 12a and 12b. When manufacturing such a pressed part 10, the shapes of each part of the first die unit and the second die unit may be adjusted according to the shape of the pressed part 10.
[0108]
　Further, although detailed description will be omitted, in addition to the parts having a hat-shaped cross section, the present invention includes, for example, a donut-shaped part shown in FIG. 24, a cylindrical part shown in FIG. 25, a spherical part shown in FIG. Manufactures ring-shaped parts shown in FIGS. 27 to 30, A-pillar, B-pillar shown in FIG. 31, A-pillar lower shown in FIG. 32, front side member shown in FIG. 33, rear side member, rear floor side member, and roof rail shown in FIG. 34. It can also be used when doing.
Code description
[0109]
　1,1a, 1b Hold device
　100, 100a, 100b Mold device
　20 1st mold unit
　22 2nd mold unit
　24 Distance member
　25 Support member
　26 Swing device
　27 Support member
　28 Return device
　30 Stopper device
　32 Punch
　34 Holder
　36 Die
　38 Pad
　39 Receiving member
　40 Biasing device

The scope of the claims
[Claim 1]
　A holding device used by being attached to a mold device,
　wherein the mold device is arranged so as to face a first mold unit having a punch and a holder, a pad arranged to face the punch, and the holder. The first mold unit is provided with a second mold unit having a die to be formed, and the first mold unit and the second mold unit are moved in the pressing direction so as to be relatively close to each other. A plate-shaped material arranged between the die and the second die unit is press-molded, the
　holder is provided so as to be movable in the press direction with respect to the punch, and the
　pad is provided with respect to the die. The first
　holding device is provided so as to be movable in the press direction, so that the 　distance member oscillatingly attached to the holder
　and the distance member
attached to the holder can be oscillated. A moving device attached to the mold unit is provided, and in the
　press direction, the direction from the second mold unit to the first mold unit is the first direction, and the opposite direction is the first direction. In the case of two directions, in a state where the
　distance member and the swinging device are attached to the mold device, the
　distance member has an in-situ position where the distance member does not contact the second mold, and the pad and the holder. Can swing with a preventive position that prevents the distance in the press direction from becoming less than a predetermined distance.
　The rocking device is a holding device that swings the distance member from the original position toward the prevention position as the holder moves relative to the punch in the first direction.
[Claim 2]
　The distance member receives a load in the first direction from the pad directly or indirectly at the prevention position so that the distance between the pad and the holder in the pressing direction becomes equal to or less than the predetermined distance. The holding device according to claim 1, wherein the holding device is prevented.
[Claim 3]
　The rocking device claims to transmit a force for swinging the distance member to the distance member at a position different from a position where the distance member directly or indirectly receives the load from the pad. 2. The holding device according to 2.
[Claim 4]
　The hold according to claim 3, wherein in the distance member, the distance between the position where the load is received and the swing center is larger than the distance between the position where the force is transmitted from the swing device and the swing center. apparatus.
[Claim 5]
　The hold according to claim 3, wherein in the distance member, the distance between the position where the load is received and the swing center is equal to or less than the distance between the position where the force is transmitted from the swing device and the swing center. apparatus.
[Claim 6]
　The rocking device has a repulsive force generator and is directly or indirectly fixed to the punch, and the
　distance member is as the holder moves relative to the punch in the first direction. , The repulsive force generating unit is pressed in the first direction, and the
　repulsive force generating unit is pressed in the first direction by the distance member to generate the repulsive force in the second direction, and the
　distance member. The holding device according to any one of claims 1 to 5, wherein receives a repulsive force in the second direction from the repulsive force generating unit and swings from the original position toward the preventive position.
[Claim 7]

　The hold device according to any one of claims 1 to 6, 　further comprising a support member that swingably supports the distance member , and the distance member is attached to the holder via the support member.
[Claim 8]
　The distance member further includes a receiving member that does not contact the distance member in the original position but is fixed to the pad so as to contact the
　distance member in the prevention position, and the distance member holds the receiving member in the prevention position. 7. Hold device.