0001]The present invention relates Forging roll apparatus.
BACKGROUND
[0002]Forging roll apparatus is an apparatus for forming a target molding material by applying a load to the molded material. Forging roll device, for example, in order to improve the yield of forging, a preliminary molding of the molding material upstream of the forging press.
[0003]Generally, forging roll apparatus includes a pair of roll shaft facing, and a plurality of molds mounted to a pair of the roll shaft, and a manipulator for transporting the molding material. When the pair of the roll shaft is rotated, the pair of molds are opposed and proximity. At that time, the manipulator is conveying the molding material to between a pair of the roll shaft. Thus, the molded material is molded bitten between a pair of molds.
[0004]
　Patent Document 1, forging roll apparatus in which a plurality of molds are mounted side by side in the circumferential direction of the roll axis is disclosed. According to this configuration, the pair of the roll shaft is rotated, a plurality of types of the pair of molds in turn facing and proximity. Thus, it is possible to perform molding using a plurality of types of molds in one Forging roll apparatus. For example, as the plurality of types of molds, it can be applied to have a gradually close the mold shape to the finished shape of the preform from the material shape of the molding material. By performing a plurality of times of molding using such a plurality of molds in sequence, highly accurate quality molded article can be obtained.
[0005]
　On the other hand, a plurality of molds be adopted a configuration in which is mounted side by side in the axial direction of the roll axis, performing molding using a plurality of types of molds in one Forging roll apparatus. However, in this configuration, the axial length of the roll shaft is lengthened, deflection is large in the roll axis at the time of molding. Forging roll apparatus of Patent Document 1 described above, without increasing the deflection of the roll axis, it is possible to perform molding using a plurality of types of molds.
CITATION
Patent Document
[0006]
Patent Document 1: JP 2008-238218 JP
Summary of the Invention
Problems that the Invention is to Solve
[0007]
　Forging roll apparatus of Patent Document 1 has a roll axis of the cylindrical shape. The plurality of molds are mounted on the cylindrical surface outer circumferential surface of the roll shaft. Thus, between the plurality of molds arranged in the circumferential direction, cross-section there is the outer peripheral surface of the arc-shaped roll axis. Therefore, narrows the space between the pair of the roll shaft, when the manipulator is to convey the molding material between a pair of the roll shaft, there manipulator may interfere in the roll axis.
[0008]
　The present invention is, in the circumferential direction of the roll shaft can be arranged side by side a plurality of molds, and material retention conveyor section (e.g. manipulator) and providing interference hardly occurs Forging roll device with the roll axis for the purpose.
Means for Solving the Problems
[0009]
　Forging roll apparatus according to the present invention,
　the axis of each other aligned in parallel, and a pair of roll shafts mold is attached to each
　material retention for conveying a molding material held to between the pair of the roll shaft a transport unit
　provided with,
　each of the pair of the roll shaft has a plurality of die mounting surface which is arranged in the circumferential direction,
　wherein between any two of said plurality of mold mounting surface of each roll axis the outer peripheral surface of the configured nearly flat from cylindrical surface centered on the axial center.
Effect of the invention
[0010]
　According to the present invention, the circumferential direction of the roll shaft can be arranged side by side a plurality of molds, and can provide an interference hardly occurs Forging roll device with the material holding and conveying unit and the roll shaft.
BRIEF DESCRIPTION OF THE DRAWINGS
[0011]
It is a perspective view showing a forging roll apparatus according to the embodiment of FIG. 1 the present invention.
It is a side view of a partially cutaway showing a portion of the mold mounting surface of FIG. 2 the roll axis.
3 is a plan view of a partially cutaway showing a support structure of the mold mounting structure and the roll shaft.
FIG. 4 is a side view showing an adjustment mechanism for changing the center distance between the pair of the roll shaft.
[5] FIGS. 5A-5D are diagrams showing a first step to fourth step of the molding process of forging roll apparatus according to the embodiment, respectively.
[6] FIGS. 6A-6D are diagrams showing a fifth step to the eighth step of the molding process of forging roll apparatus according to the embodiment, respectively.
[7] FIGS. 7A-FIG. 7D is a diagram showing a ninth step to 12th step of the molding process of forging roll apparatus according to the embodiment.
DESCRIPTION OF THE INVENTION
[0012]
　It will be described in detail with reference to the drawings, embodiments of the present invention.
[0013]
　Figure 1 is a perspective view showing a forging roll apparatus according to an embodiment of the present invention. Figure 2 is a side view of a partially cutaway showing a portion of the mold mounting surface of the roll axis.
[0014]
　Forging roll apparatus 1 according to an embodiment of the present invention, pressure is applied to the molding material M of the metal, an apparatus for forming a target molding material M. Forging roll apparatus 1, for example, it is used upstream of the forging press in order to improve the yield of forging, a preliminary molding of the molding material M. Forging roll apparatus 1 comprises a pair of the roll shaft 10, a plurality of molds 20a, and 20b, and the drive unit 30, a transmission mechanism 40, a frame 50, an adjustment mechanism 55, a manipulator 60, a control unit 70 equipped with a. Manipulator 60 is an example of a material retention transport unit according to the present invention.
[0015]
　A pair of roll shafts 10 are aligned so that the axis of each other are parallel, are supported by the frame 50 via the adjusting mechanism 55. As shown in FIG. 2, each roll shaft 10 has a plurality of die mounting surface 11a ~ 11d in the circumferential direction. Among the plurality of die mounting surface 11a ~ 11d, the surface of the mold at the same time the molding process is attached are two mold mounting surface 11a disposed in opposite directions, 11c (or 11b, 11d). Therefore, one of a plurality of molds 20a to the roll shaft 10, if the 20b is mounted, the mold 20a, 2 two mold mounting surface 11a having the 20b, during 11c, no mold die mounting surface 11b , 11d are arranged. Hereinafter, the section that does not die is mounted along the circumferential direction of the roll shaft 10 referred to as "gap interval T1."
[0016]
　Die mounting surface 11a ~ 11d have included a planar shape. Specifically, each die mounting surface 11a ~ 11d is more than half of the region is planar shape, more specifically, has a shape keyway D are formed in one plane. Keyway D is provided along the circumferential direction of the roll shaft 10 at the center of each mold mounting surface 11a ~ 11d. The key groove D, key K has been concluded. Key K Mold mounting surface 11a, projecting in the radial direction of the roll axis 10 than the planar portion of the 11c, as molds 20a, 20b does not move in the circumferential direction, the mold 20a, is engaged and 20b.
[0017]
　Roll axis 10, in the gap interval T1 no mold, having an outer peripheral surface closer to the plane than the cylindrical surface centered on the axial center CL (indicated by the two-dot chain line in FIG. 2 L1). Here, the cylindrical surface as shown in FIG. 2 by the two-dot chain line L1, means a cylindrical surface having an edge and the same radius with the mold mounting surface 11a, on one circumferential direction 11c. Further, the plane means two mold mounting surface 11a, 4 one single plane connecting two edges of adjacent ones of the edges that are parallel to the circumferential direction of the 11c. With this arrangement, when the gap interval T1 of the pair of the roll shaft 10 is opposed, a relatively large space is provided between the pair of the roll shaft 10.
[0018]
　In the present embodiment, as described above, the outer peripheral surface of the gap section T1 of the roll shaft 10, the mold mounting face 11b the mold is not installed, it is 11d. Is not particularly limited, these mold mounting surface 11b, the key groove D of 11d, are fastened blocks B. Block B, the die mounting surface 11b as the key K, does not project radially from 11d.
[0019]
　Mold 20a, 20b, the type of applying pressure to the molding material M is formed on the outer peripheral side, and the inner peripheral side flat portion corresponding to the die mounting surface 11a ~ 11d (the back side), the key K is fitted and a key groove that. Keyway is provided at the center in the circumferential direction of the roll axis 10 in the plane portion.
[0020]
　A plurality of molds 20a, the 20b, includes a first set of the pair of molds 20a and second pairs of dies 20b is. The first set of mold 20a and a second set of mold 20b, is mounted one on each roll shaft 10. The first set of the pair of molds 20a, a pair of the roll shaft 10 is close and opposed to when a predetermined angle of rotation, performing a shaping of the first pass of the molding material M. Second pairs of molds 20b, a pair of the roll shaft 10 is close and opposed to when a predetermined angle of rotation, performing a shaping of the second pass of the molding material M. The "one-pass" and "two-pass" means the number of times which the molding material M is molded by passing between the pair of molds.
[0021]
　Figure 3 is a plan view of a partially cutaway showing a support structure of the mounting structure and the roll axis of the mold.
[0022]
　Mold 20a, 20b has a fitting key K, by clamping from the axial direction of the roll shaft 10 is fixed to the roll shaft 10. Specifically, as shown in FIG. 3, the mold 20a, one side of 20b is in contact with the flange 12 of the roll shaft 10 via the contact plate 13. Further, the mold 20a, on the other side of 20b, projection F which is inclined in a direction to increase the amount of protrusion closer to the axial center CL is provided. Further, the roll shaft 10, the wedge 15 contacting the die 20a, the projection F and 20b are fastened. With this configuration, pressure wedge 15 is pressurized the projection F and the mold 20a, 20b and exerts a force in the axial direction and the radial direction of the roll shaft 10, the mold 20a, 20b is fixed to the roll shaft 10 with high strength ing.
[0023]
　Drive 30 (see FIG. 1) includes a pair of servo motors (not shown), a pair of speed reducer and a (not shown). A pair of servo motors are respectively connected to a pair of the roll shaft 10 through a pair of reduction gear and the transmission mechanism 40. Servo motor drives a pair of the roll shaft 10 while detecting the rotation angle.
[0024]
　Transmission mechanism 40 transmits the rotational motion of the servo motor via a reduction gear to the roll shaft 10. Transmission mechanism 40 includes a universal joint, to follow the changes between the axes of the roll shaft 10.
[0025]
　Frame 50 rotatably supports the roll shaft 10 through the adjustment mechanism 55.
[0026]
　Figure 4 is a side view showing an adjustment mechanism for changing the center distance between the pair of the roll shaft.
[0027]
　Adjusting mechanism 55 is a mechanism for changing the center distance between the pair of the roll shaft 10. Adjusting mechanism 55 has four eccentric gear 51, a reduction gear 52 and the motor 53 for driving the four eccentric gear 51 (see Figure 1). On the inner peripheral side of the eccentric gear 51, the one end portion 10a of the roll shaft 10 or the bearing 51a is provided for rotatably supporting the other portion 10b (see Figure 3). It is eccentric to the center O2 of the rotation center O1 and the bearing 51a of the eccentric gear 51 (see Figure 4).
[0028]
　Four eccentric gear 51 is rotatably supported respectively on four bearings 51a of the frame 50. Two eccentric gears 51 disposed on one axial counter-rotating meshed with each other. Two eccentric gear which is arranged on the axial direction of the other 51 are also the same. Reduction gear 52 is coupled to the one and the other of the eccentric gear 51 in the axial direction via the gear 52a.
[0029]
　With this arrangement, when the motor 53 is driven, four eccentric gear 51 is rotated by the same rotation angle. The upper eccentric gear 51 and the lower eccentric gear 51 rotate in opposite directions. When four eccentric gear 51 rotates, the bearing 51a of the upper eccentric gear 51, and the bearing 51a of the lower eccentric gear 51, in the vertical direction changes by equal amounts in opposite directions. Thus, the axial distance between the pair of the roll shaft 10 is changed. Furthermore, even when the center distance is changed, the center of a straight line passing between a pair of the roll shaft 10 (as an intermediate in the center point of the pair of the roll shaft 10, extending in the circumferential direction of the roll shaft 10 linear) displacement do not do. Accordingly, manipulator 60, when advancing and retracting the central straight line between a pair of the roll shaft 10, even if the change between the axes of the pair of the roll shaft 10, the distance between the manipulator and the pair of the roll shaft 10 to one not biased.
[0030]
　Manipulator 60 includes a gripper 61 for gripping an object to be molding material M (see Figure 2), and a not shown for advancing and retracting mechanism for advancing and retracting the gripper 61. Gripper 61 is located at the tip of the manipulator 60. Reciprocating mechanism, the grip portion 61, along a central straight line SL between the pair of the roll shaft 10, moving the straight line. Further, forward and reverse mechanism can be twisted at least 90 ° the gripper 61 in the rotational direction around the straight line.
[0031]
　Control unit 70 controls the operation of the servo motor (not shown) and a manipulator 60 of the drive device 30. Control unit 70 may further control the motor 53 of the adjusting mechanism 55.
[0032]
　
　Next, a description will be given forming process by forging roll apparatus 1 of the embodiment.
[0033]
　FIGS. 5A ~ FIG 7D are explanatory views showing a molding process of forging roll apparatus embodiment. FIGS. 5A-FIG. 5D shows the first step to fourth step. FIGS. 6A-FIG. 6D shows the fifth step to the eighth step. Figure 7A-Figure 7D shows its ninth step to 12th step.
[0034]
　As shown in Figure 5A, at the time of the start of the molding process, a pair of the roll shaft 10 is stopped at a rotation angle clearance interval T1 are opposed. Furthermore, manipulator 60 positions the gripper 61 to the standby position passes between the gap interval T1. Standby position is far enough away from the pair of the roll shaft 10, the robot R can carry the molded material M without interfering molds 20a, 20b, until the grip part 61. In the start of the molding process, the grip portion 61 is passed to the molding material M from the robot R.
[0035]
　When the gripping portion 61 grips the object molding material M, as shown in FIG. 5B, manipulator 60 is retracted to move the gripper 61 to the intermediate position of the pair of the roll shaft 10. Then, as shown in FIG. 5C, FIG. 5D, FIG. 6A, a pair of the roll shaft 10 is rotated by the drive device 30, a first set of the pair of molds 20a is sequentially close and opposite from one end to the other end . In conjunction with this, the manipulator 60 moves backward in synchronization with the rotation of the roll shaft 10.
[0036]
　These operations, forming the first pass of the molding material M is performed. More specifically, first, one end portion of the molding material M, which is gripped by the gripper 61 is caught at one end of the pair of molds 20a (Figure 5C). Then, move in order to the other end portion facing the pair of molds 20a from one end of the mold 20a, at the same time, the portion where the molding material M is moved, is caught by the pair of molds 20a It moves sequentially from one end to the other end (Fig. 5D). Thereafter, the molding material M is released from the pair of molds 20a, it retracts to a position where it does not interfere with the die 20a (FIG. 6A). During this time, the molding material M is molded under pressure in the pair of molds 20a.
[0037]
　After the first pass of the forming is completed, the roll shaft 10 rotates in the same direction, no die gap interval T1 is stopped at the rotation angle facing (Fig. 6B). Thereafter, manipulator 60 is advanced to move the position of the start of forming of the second pass to be molding material M (Figure 6C). Here, manipulator 60, to be the molding material M may be rotated 90 ° in the direction of twisting with respect to the traveling direction. This rotation, the direction of applying pressure to the molded product, 90 degrees with the first pass of the forming and shaping of the second pass, can be different.
[0038]
　Subsequently, as shown FIG. 6D, FIG. 7A, FIG. 7B, a pair of the roll shaft 10 is rotated by the drive device 30, sequentially toward and facing a second set of a pair of molds 20b is from one end to the other end to. In conjunction with this, the manipulator 60 moves backward in synchronization with the rotation of the roll shaft 10. These operations, forming the second pass of the molding material M is performed. More specifically, first, one end portion of the molding material M, which is gripped by the gripper 61 is caught at one end of the pair of molds 20b (FIG. 6D). Subsequently, it moves to the other end portion facing the pair of molds 20b from one end of the mold 20b, at the same time, it moves the molding material M, one end portion to be caught in the pair of molds 20b It moves to the other end portion from part (Fig. 7A). Thereafter, the molding material M is released from the pair of dies 20b, it retreats to a position which does not interfere with the mold 20b (Figure 7B).
[0039]
　Subsequently, the roll shaft 10 rotates in the same direction, no die gap interval T1 is stopped at the rotation angle facing (Fig. 7C). In addition, manipulator 60 moves backward until the delivery point of the molding material M. Furthermore, the robot R receives the object molding material M from the manipulator 60, the molding process of one of the molding material M is completed (FIG. 7D).
[0040]
　Conjunction with the operation of the roll shaft 10 and the manipulator 60 of the above-described forming process, the control unit 70 is realized by controlling a servo motor and a manipulator 60 of the drive device 30.
[0041]
　
　will now be described adjustability of the axial distance between the pair of the roll shaft 10.
[0042]
　Adjustment of the center distance, if not obtained a predetermined dimensional accuracy by a molding of the molding material M, are performed for the purpose of improving the dimensional accuracy. For example, the user using the forging roll apparatus 1 performs the shaping process of the trial of the molding material M. Then, after the molding process of the trial, the user can measure the dimensions of the molding material M, to confirm whether the desired dimensional accuracy is obtained. For example, the user portion becomes maximum thickness of the molding material M or, like parts to nodes, measuring the size of the necessary portion is compared with the target dimensions.
[0043]
　Here, larger than the size dimension of the target of the molding material M, the user drives the adjusting mechanism 55, to reduce the inter-axes of the pair of the roll shaft 10. Thus, the distance the pair of molds 20a or mold 20b comes close and opposite decreases. Therefore, it is possible to increase the pressure applied to the molding material M by a die 20a or the die 20b. Then, it is possible to make the dimensions after molding of the molding material M to the dimensions of the target.
[0044]
　On the other hand, if the dimensions of the molding material M is smaller than the size of the target, the user drives the adjusting mechanism 55, to increase the inter-axes of the pair of the roll shaft 10. Accordingly, the distance in which the pair of molds 20a or mold 20b are close and opposite increases. Therefore, it is possible to reduce the pressure applied to the molding material M by a die 20a or the die 20b. Thus, it is possible to make the dimensions after molding of the molding material M to the dimensions of the target.
[0045]
　The shaft between the adjustment of the roll shaft 10 may be performed after the molding of the first set of the pair of molds 20a in the molding process of the trial may be carried out after the molding of the second pairs of dies 20b . Further, there is a case where the inter-axis length suitable for forming the first pairs of molds 20a, and between the axes length suitable for forming the second pairs of molds 20b are different. In this case, in the middle of a single molding step, it may be added a step of changing the inter-axes of the pair of the roll shaft 10. Specifically, the control unit 70 performs changes between axes corresponding to the first set of the pair of molds 20a during standby of the first pass of FIG. 5B, the second set during standby of the second pass of Figure 6C it may be performed to change between the axes corresponding to the pair of molds 20b of. Furthermore, in this case, the control unit 70 previously stores the drive amount of the motor of the adjusting mechanism 55 is preferably configured to operate the automatic adjustment mechanism 55 in the middle of one of the molding process.
[0046]
　As described above, according to the forging roll apparatus 1 of the present embodiment, in each roll shaft 10, two molds 20a is attached die mounting surface 11a, during 11c, gap die is not attached there is an interval T1. Then, the outer peripheral surface of the gap section T1 of each roll shaft 10 is closer to the plane than the cylindrical surface centered on the axis CL of the roll shaft 10 (see two-dot chain line L1 in FIG. 2). Thus, the outer peripheral surface of the gap section T1 of the pair of the roll shaft 10 when opposing, relatively large space is provided therebetween. Therefore, when the manipulator 60 is moved between the pair of the roll shaft 10, hardly occur interference between the roll shaft 10 and the manipulator 60.
[0047]
　Further, according to the forging roll apparatus 1 of the present embodiment, the die mounting surface 11a ~ 11d of each roll shaft 10, a shape including a plane. Specifically, each die mounting surface 11a ~ 11d is more than half of the area is a planar shape. More specifically, each mold mounting surface 11a ~ 11d are keyway D has a shape which is provided in one plane. According to such a configuration, it is possible to mold 20a, the rear surface of the 20b in a planar shape. Mold 20a, 20b is manufactured by performing processing such as cutting the integral metal. Therefore, the mold 20a, the 20b, that one side is planar, improves processing accuracy, it is possible to significantly reduce the manufacturing cost. Furthermore, the die mounting surface 11a ~ 11d and the mold 20a, since the rear surface of the 20b is flat, can be placed keys K in the circumferential direction of the roll shaft 10 at the center of each mold mounting surface 11a ~ 11d. In other words, the mold 20a, can be arranged keys K on the rear surface of the 20b. Therefore, as in the conventional configuration, the gap section T1 of the roll shaft 10, is not the key K is arranged. Therefore, when the manipulator 60 is moved between the pair of the roll shaft 10, nor manipulator 60 from interfering with the key K.
[0048]
　Furthermore, according to the forging roll apparatus 1 of the present embodiment, the gap interval T1 of each roll shaft 10, the other mold mounting surfaces 11b, 11d are provided. Mold 20a, 20b is attached die mounting surface 11a, 11c, since the mold 20a, a high pressure from 20b applied, deterioration progresses in accordance with the operating frequency of the molding process is increased. Therefore, by dividing the mold mounting surface 11a ~ 11d in two pairs, can be employed a method that one set of the mold mounting face 11a, 11c are Once degraded, the other set of mold mounting surfaces 11b, use the 11d . Or it may employ a method of using a first set of mold mounting surfaces 11a, 11c and a second pair of die mounting surface 11b, and the 11d alternately. This makes it possible to extend considerably the life of the pair of the roll shaft 10.
[0049]
　Further, according to the forging roll apparatus 1 of the present embodiment, the adjustment mechanism 55 is displaced between axes of both of the pair of the roll shaft 10 by equal amounts movement. Therefore, even if made between axes adjustment, the distance between one roll axis 10 of the manipulator 60, does not occur bias in the distance between the manipulator 60 and the other roll axis 10. Therefore, even if made between axes adjustment, without changing the route manipulator 60 moves forward and backward, it is possible to avoid interference between the manipulator 60 and the roll shaft 10.
[0050]
　In order to provide an adjustment mechanism 55 for displacing both of the pair of the roll shaft 10, it is necessary to space for parallel two eccentric gears 51 in a direction in which the pair of the roll shaft are aligned. Eccentric gear 51 has a bearing 51a on the inner circumferential side, and it is necessary to withstand high pressures, increases in the radial direction. Therefore, it requires greater space to arrange the two eccentric gears 51. On the other hand, in this embodiment, it corresponds to the die mounting surface 11a ~ 11d of the roll shaft 10, the die 20a in which the rear surface into a planar shape, can be adopted 20b. Mold 20a back surface is flat, 20b can readily be increased radial thickness of the roll shaft 10. As a result, without increasing the diameter of the pair of the roll shaft 10, it is possible to easily design between these axes distance long. Therefore, according to this embodiment, by increasing the axial distance between the pair of the roll shaft 10, a space for arranging the two eccentric gears 51 large in the radial direction can be easily secured, the adjustment mechanism 55 described above it can be easily provided.
[0051]
　Further, according to the forging roll apparatus 1 of the present embodiment, it is synchronized to the control as shown in a pair of the roll shaft 10 and the manipulator 60 Togazu 5 to 7. Thus, a pair of the roll shaft 10 during one rotation, it is possible to perform one the forming of the first pass of the forming and the second pass of the molding material M continuously.
[0052]
　It has been described the present embodiment. However, the present invention is not limited to the above embodiment. For example, in the above embodiment, the outer peripheral surface of the gap interval T1 the mold is not present in the roll shaft 10, it described another mold mounting face 11b, and configurations are 11d for example. However, the outer peripheral surface of the gap interval T1 may not be die mounting surface. Further, in the above embodiment, the outer peripheral surface of the gap section T1 of the roll shaft 10 has been described as being planar, rather than flat, as long shape is closer to the plane than the cylindrical surface centered on the axial center CL . For example, the outer peripheral surface of the gap interval T1 may be a curved surface recessed from the plane may be convex shape close to a plane. The outer peripheral surface of the gap section T1 may have a shape having irregularities.
[0053]
　In the above embodiment, the die mounting surface 11a ~ 11d has a shape having a keyway in a plane. However, the mold mounting surface, for example, may be inclusive shape multiple planes so that the cross section is polygonal shape, such as a shape having a rounded chamfer around the plane includes a curved part shape it may be. Mold mounting surface, more than half of the range is effectively is planar.
[0054]
　In the above embodiment, for each range of the rotation angle 90 ° in the circumferential direction of the roll shaft 10, shown mold mounting surface 11a of the mold is attached, and 11c, and a gap interval T1 lined configuration. However, for example, in the circumferential direction of the roll shaft 10, for each range of the rotation angle 120 °, and the mold mounting surface, a gap interval T1, it may be configured lined with a mold mounting surface. Further, in the circumferential direction of the roll axis, for each range of the rotation angle of 60 °, and the mold mounting surface, it may be configured with a gap section are alternately arranged. Also, the angular range occupied by each mold mounting surface, the angular range in which each gap section T1 occupies may not be equal.
[0055]
　In the above embodiment, although the configuration in which the molding material M is molded when the manipulator 60 is retracted, may be configured to be molding material M is molded when the manipulator 60 is advanced. In the above embodiment, as an example a configuration to arrange a pair of roll shaft 10 up and down, have been described the operation direction of each part of the direction and the respective portions. However, the direction in which the pair of the roll shaft 10 are arranged may be a different direction, such as horizontal. In that case, the operation direction of the direction and the respective portions of the respective units shown in the description may be read as a different direction so as to correspond to the direction in which the pair of the roll shaft 10 is arranged.
[0056]
　The adjustment mechanism 55 shown in the above embodiments may be omitted, the drive unit 30 to the roll shaft 10 by omitting the transmission mechanism 40 may be adopted to be connected directly.
[0057]
　In the above embodiment has described an arrangement for use Forging roll device preforming of the molding as an example, forging roll apparatus may be used for molding other than preforming (e.g. the molding) . Other details shown in the embodiments may be suitably changed without departing from the spirit of the invention.
Industrial Applicability
[0058]
　The present invention is applicable to forging roll apparatus.
DESCRIPTION OF SYMBOLS
[0059]
　1 Forging roll apparatus
　10 roll shaft
　11a ~ 11d die mounting surface
　20a first pairs of molds
　20b second pairs of molds
　55 adjusting mechanism
　60 manipulator (material holding conveying
　section) 70 control unit
　CL axial

WE CLAIM

Mutual axis is aligned in parallel, and a pair of roll shafts mold is attached to each of
　the material holding and conveying unit that conveys to between the pair of the roll shaft of the molded material which holds
　equipped with,
　the pair each of the roll shaft has a plurality of die mounting surface which is arranged in the circumferential direction,
　the outer circumferential surface between any two of said plurality of mold mounting surface of the respective roll shafts is about the axis nearly flat from the cylindrical surface,
　Forging roll apparatus.
[Requested item 2]
　The die mounting surface has a shape which includes a planar,
　Forging roll apparatus according to claim 1.
[Requested item 3]
　The displaced one and the other of the pair of the roll shaft, further comprising a distance capable of changing adjusting mechanism between the axes of the pair of the roll shaft,
　Forging roll apparatus according to claim 1 or claim 2.
[Requested item 4]
　A servo motor for rotating the pair of the roll shaft,
　and a control unit to control the material holding transport unit and the operation of the servo motor, further comprising a
　said pair of roll axis is at least a first set of a pair of molds When mounted and a second set of a pair of the mold,
　wherein,
　said pair of roll shaft is rotated, in turn, said to face the first set of a pair of molds, the pair of the roll shaft, respectively are opposed to the outer peripheral surface close to the plane of said second set of controls the servo motor so as to oppose the pair of molds, and,
　in conjunction with the rotation of the pair of the roll shaft, the pair of the roll shaft retracted from the respective forward or the space to space between the closer the outer peripheral surface to said plane, said pair of the molding material the first set after transport between the mold and the second set of the pair said material holding conveyance to convey between the mold Controlling the,
　Forging roll apparatus according to any one of claims 1 to 3.