JP3785547B2 - Material transfer device for multi-stage forging machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a material transfer device for a multistage forging machine, and more specifically, a material processed by each die set in a multistage forging machine provided with a plurality of die sets each including a die and a punch. The present invention relates to a material transfer device that sequentially feeds a sheet by a chuck.
[0002]
[Prior art]
A multi-stage forging and forming machine such as a nut former or a header is provided with a die block on the front end surface of a fixed frame, and a plurality of dies are provided in a horizontal row at a constant interval on the die block. In addition, a plurality of punches corresponding to the respective dies are disposed in a ram that moves forward and backward with respect to the dies by the drive mechanism, and a material is formed by forging with a pair of dies and punches.
[0003]
The molding machine is provided with a material transfer device for sequentially feeding a material that has been forged by a die set including a die and a punch to the next set of die sets. The basic structure of this material transfer device will be described as an example. The base end portions of a pair of swing levers are swingable on the mounting member disposed on the upper portion of the fixed frame, spaced apart in the direction of arrangement of the mold set. And a support member is pivotally mounted between the tip portions of both swing levers. In this support member, chucks capable of gripping the material extruded from each die are arranged at the same interval as the die arrangement interval corresponding to the number of dies. By reciprocating in the direction, the material extruded from the previous die is gripped by the chuck and sequentially transferred to the front surface of the next die.
[0004]
The swing device that reciprocates the support member includes a rack that linearly reciprocates by a crank mechanism disposed on the fixed frame, a pinion that meshes with the rack, an eccentric ring that is fixed to the shaft of the pinion, and an eccentricity The connecting rod is connected to the ring via a connecting fitting, and the tip of the connecting rod is connected to the end of the support member. The support member is reciprocated in the lateral direction by the distance between adjacent dies through the connecting rod by the swinging motion of the eccentric wheel obtained by driving the crank mechanism and reciprocatingly rotating the pinion engaged with the rack. It is configured to make it.
[0005]
[Problems to be solved by the invention]
In the conventional material transfer device, the number of parts of the swing device for reciprocating the support member on which the chuck is disposed is large, and it is pointed out that the mechanism is complicated and the cost is increased. In addition, there is a disadvantage that the operation error due to play between the parts increases, and the rack and pinion reciprocate, resulting in severe tooth fatigue, which is not suitable for high-speed machines. Further, the swinging device is provided on the operation side where the operator is positioned with respect to the fixed frame, and the operator can work closer to the fixed frame when performing maintenance such as replacement or adjustment of dies and punches. There was also a problem of not working. In addition, since the swinging device is arranged substantially in series in the reciprocating direction of the support member, it is pointed out that the entire device is enlarged.
[0006]
In the molding machine, when exchanging the dies, the chuck located on the front side of the die obstructs the work, and therefore it is necessary to retract the chuck from the front side of the fixed frame. It is comprised so that it can invert above. In this case, since the swinging device and the support member are connected via a connecting rod, when exchanging the dies, it is necessary to remove or attach the connecting rod from the eccentric wheel, which is troublesome. Therefore, there was a problem that it took time to change the setup.
[0007]
OBJECT OF THE INVENTION
In view of the above-mentioned problems inherent in the prior art described above, the present invention has been proposed to suitably solve this problem, and can perform maintenance in a short time and efficiently, and can reduce the overall size of the apparatus. It aims at providing the raw material transfer apparatus of the multistage type forging molding machine which can plan.
[0008]
[Means for Solving the Problems]
In order to overcome the aforementioned problems and achieve the intended purpose, the present invention provides:
A plurality of dies arranged in a horizontal row at a fixed interval on the front surface of the fixed frame, a plurality of punches arranged to move forward and backward corresponding to each die, and a rotation disposed on the fixed frame A mounting base that swings between an operating position in contact with and placed on the upper surface of the fixed frame with the shaft as a center, and a retracted position that is spaced upward from the upper surface, and a plurality of gripping materials corresponding to the dies. The chuck is provided in a horizontal row, and is horizontally oscillated via a pair of oscillating levers with the chuck facing the front surface of the die with respect to the mounting base positioned at the operating position, the chuck by swinging the mount to the retracted position consists of a set supporting member to be separated retracted upward from the front of the die, while positioning the mount in the operating position, the die and punch The material was heading in a multi-stage forging molding machine adapted to grip by the chuck sequentially transferred to the front surface of the next-stage die by,
The driving side of the multi-stage forging molding machine definitive in the mount, is arranged to integrally swing with attached base said mounting, and the swing mechanism of the parallel link structure wherein one of the rocking lever is connected,
A first holding member that is disposed in the swing mechanism and operates in the front-rear direction to actuate the swing mechanism to horizontally swing the support member via the swing lever, and in parallel with the first holding member. A second holding member extending to
A first follower pivotally supported by the first holding member and a second follower pivotally supported by the second holding member ;
A drive shaft that is rotatably disposed on the fixed frame in parallel with the rotation shaft, and is rotated by drive means;
Is integrally rotatably disposed on the drive shaft, on its outer peripheral surface, the drive shaft parallel outer peripheral surface of the front Symbol first follower and the first swing cam and the first swing cam in contact rollably integrally rotatably disposed on its outer peripheral surface, consists of a second swing cam outer circumferential surface of the front Stories second follower abuts rollably,
In a state where the mounting base is positioned at the operating position, when the first holding member that contacts the outer peripheral surface of the first swing cam via the outer peripheral surface of the first follower moves forward by the rotation of the drive shaft, the second holding member moves forward. holding member via the outer peripheral surface of the second follower on the outer circumferential surface of the outer peripheral surface of the second follower is retracted while in contact in a parallel relationship to the outer peripheral surface of the second swing cam, the second swing cam in opposite those When the second holding member in contact is advanced, the first holding member is set so that the outer peripheral surface of the first follower moves backward while contacting with the outer peripheral surface of the first rocking cam in parallel .
By swinging the mounting base from the operating position to the retracted position, the corresponding follower is separated from the pair of swing cams, and the connection of the drive system to the swing mechanism is released. It is characterized by that.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, a material transfer device for a multistage forging machine according to the present invention will be described below with reference to the accompanying drawings, taking a preferred embodiment. FIG. 1 is a schematic plan view showing a forming section of a multistage forging machine in which the material transfer device according to the present invention is adopted, and FIG. 2 is a schematic front view showing a forming section of the multistage forging machine. .
[0010]
A multi-stage forging machine 10 shown in the figure includes a die block 12 on the front end surface of a fixed frame 11, and a plurality of (five in the embodiment) dies 13 are arranged in a horizontal row at a predetermined interval on the die block 12. Is arranged. On the front side of the die block 12, a ram (none of which is shown) provided with a plurality of punches corresponding to the dies 13 is arranged to move forward and backward with respect to the die block 12. Then, with the material facing the front surface of the die 13, the punch is brought close to the die 13 to form the material into a required shape. A knockout pin (not shown) is provided inside the fixed frame 11 corresponding to each die 13 and is configured to extrude the forged material from the die 13 to the front side.
[0011]
A mounting base 14 extending in the lateral direction along the die block 12 is disposed on the fixed frame 11, and the mounting base 14 has a pair of rotating arms spaced apart in the lateral direction as shown in FIG. 15 and 15 are provided to extend rearward. A rotating shaft 17 is rotatably disposed between a pair of brackets 16 and 16 that are spaced apart in the lateral direction on the fixed frame 11 facing the rear of the mounting base 14. The moving arms 15 and 15 are attached so as to be integrally rotatable. Further, a driving means (not shown) such as a cylinder is connected to the rotating shaft 17 via a clevis 18, and by operating the driving means, the mounting base 14 swings up and down around the rotating shaft 17. It is positioned between an operating position (see FIGS. 6 and 8) that moves and contacts and is placed on the upper surface of the fixed frame 11, and a retracted position (see FIGS. 7 and 9) that is spaced upward from the upper surface of the fixed frame 11. Configured to be. A detection sensor 19 is disposed on one bracket 16 (see FIG. 8), and detects whether the mounting base 14 is positioned at the operating position or the retracted position by the sensor 19. It is set as follows.
[0012]
The first housing 20 is disposed so as to swing integrally at one end in the lateral direction (the right end in FIG. 2) facing the operation side of the molding machine 10 in the mounting base 14, and the vertical position disposed in the first housing 20. A base end portion of the first swing lever 22 is pivotally supported on the shaft 21. In addition, the second housing 23 is disposed so as to swing integrally with the other end in the lateral direction (left end in FIG. 2) facing the drive side of the molding machine 10 in the mounting base 14, and is disposed in the second housing 23. A second swing lever 25 is connected to the swing mechanism 24 having a parallel link structure. As shown in FIG. 2, both swing levers 22 and 25 have a support member 26 formed of a pair of support plates 26a and 26a extending in the lateral direction along the die block 12 and spaced apart from each other at both ends in the lateral direction. By pivoting the second rocking lever 25 by the rocking mechanism 24, the support member 26 is moved between the laterally retracted position (left end) and the advanced position (right end). Configured to reciprocate. Further, the same number of chucks 27 as the number of dies 13 are disposed in the support member 26 in the horizontal direction at the same interval as the distance between the dies 13, and the support member 26 reciprocates in the horizontal direction. Each chuck 27 moves between adjacent dies 13 and 13. 6 and 8, the chuck 27 faces the front surface of the die 13 when the mounting base 14 is positioned at the operating position, and the mounting base 14 is moved to the operating position as shown in FIGS. 7 and 9. It is configured to move away from the front surface of the die 13 and move upward from the front surface of the die 13 by moving from the retracted position to the retracted position.
[0013]
As shown in FIGS. 1 and 4, the second housing 23 is provided with a pair of fixed shafts 28 and 29 vertically spaced apart from each other at a substantially central position in the lateral direction, and a front fixed located on the front side. A front support cylinder 30 is rotatably fitted on the shaft 28, and the second swing lever 25 is formed integrally with the front support cylinder 30 and extends forward. A rear support cylinder 31 is rotatably fitted on a rear fixed shaft 29 located on the rear side. A pair of link plates 32, 32 are disposed in parallel on the front support cylinder 30 so as to be spaced apart from each other in the vertical direction, and extend to the left of the upper and lower link plates 32, 32 (left side in FIG. 5). The front first connecting shaft 33 is disposed between the protruding portions 32a and 32a, and the front second connecting shaft 34 is disposed between the right extending portions 32b and 32b extending to the other radial side (the right side in FIG. 5). Is disposed. Similarly to the front support cylinder 30, the rear support cylinder 31 is provided with a pair of link plates 35, 35 that are spaced apart from each other in parallel, and one of the diameters of the upper and lower link plates 35, 35 (see FIG. 5). The rear first connecting shaft 36 is disposed between the left extending portions 35a and 35a extending to the left side, and between the right extending portions 35b and 35b extending to the other radial side (the right side in FIG. 5). A rear second connecting shaft 37 is disposed. As shown in FIG. 5, the first holding member 38 extending in the front-rear direction is rotatably held by the front and rear first connecting shafts 33, 36 and extends in parallel with the first holding member 38. The second holding member 39 is rotatably held by the front and rear second connecting shafts 34 and 37. That is, by moving the first holding member 38 and the second holding member 39 in the front-rear direction, the front support cylinder 30 in the swing mechanism 24 of the parallel link structure rotates about the front fixed shaft 28, and the second The swing lever 25 is configured to swing back and forth in the lateral direction.
[0014]
As shown in FIG. 1, a drive shaft 40 parallel to the rotating shaft 17 is mounted on the fixed frame 11 at a position facing the rear of the second housing 23 with the mounting base 14 positioned at the operating position. The drive shaft 40 is rotatably supported via 41, 41, and is configured to be rotated in a required direction by a drive motor (drive means) 42. A first rocking cam (plate cam) 43 and a second rocking cam (plate cam) 44 having a required shape are disposed on the drive shaft 40 so as to be separated from each other in the axial direction so as to be integrally rotatable. A first follower 45 pivotally supported by the rear end of the first holding member 38 is slidably abutted on the outer peripheral surface of the first holding member 38 (see FIG. 3), and the second follower cam 44 is in contact with the outer peripheral surface of the second swing cam 44. A second follower 46 pivotally supported at the rear end of the holding member 39 is in contact with the roll (see FIG. 4).
[0015]
As shown in FIGS. 3 and 4, first cam surfaces 43 a and 44 a having a large radial distance from the shaft center of the drive shaft 40 are provided on the outer peripheral surfaces of the first and second swing cams 43 and 44. And the second cam surfaces 43b and 44b having a small separation distance are formed, and both the swing cams 43 and 44 are 180 ° out of phase with the first cam surfaces 43a and 44a sandwiching the axis of the drive shaft 40. It is disposed on the drive shaft 40 in a depressed state. That is, when the first follower 45 is in contact with the first cam surface 43a of the first swing cam 43, the second follower 46 is in contact with the second cam surface 44b of the second swing cam 44, and the second follower 46 is in contact with the second cam surface 44a. The swing lever 25 is swung to the right in FIG. When the second follower 46 is in contact with the first cam surface 44a of the second swing cam 44, the first follower 45 is in contact with the second cam surface 43b of the first swing cam 43, and the second swing The moving lever 25 is configured to swing leftward in FIG.
[0016]
As shown in FIG. 6, the first follower 45 and the second follower 46 are in contact with the outer peripheral surfaces of the corresponding swing cams 43 and 44 in a state where the mounting base 14 is positioned at the operating position. The mechanism 24 and the drive system are connected and held in an operable state. 7, the first follower 45 and the second follower 46 are separated from the outer peripheral surfaces of the corresponding swing cams 43 and 44 by swinging the mounting base 14 from the operating position to the retracted position as shown in FIG. Thus, the connection between the swinging mechanism 24 and the drive system is released to make it inoperative.
[0017]
The fixed frame 11 is provided with a wire cutter device (not shown) on the side (left side) of the die block 12, and the wire supplied from a supply source (not shown) to the cutter device has a predetermined length dimension. The material obtained is cut by the chuck 27 at the left end portion and transferred to the front surface of the first die 13.
[0018]
[Effect of the embodiment]
Next, the operation of the material transfer device configured as described above will be described. The first follower 45 abuts the second cam surface 43b of the first swing cam 43 and the first cam surface of the second swing cam 44 in a state where the mount 14 faces the operating position. 44a is in contact with the second follower 46, the second swing lever 25 swings to the left, and the support member 26 faces the retracted position (see FIG. 1).
[0019]
When the drive shaft 40 is rotated in the required direction by the drive motor 42, the first follower 45 of the first holding member 38 is moved from the second cam surface 43b to the first cam surface 43a by the rotation of the first swing cam 43. Then, the first holding member 38 moves forward. Thus, the front and rear support cylinders 30 and 31 connected to the first holding member 38 via the front and rear first connection shafts 33 and 36 and the link plates 32 and 35 are centered on the fixed shafts 28 and 29 in FIG. It rotates counterclockwise, and the second swing lever 25 swings to the right. As a result, the support member 26 moves to the forward position, and each chuck 27 moves from the front surface of the previous die 13 to the front surface of the next die 13. The second rocking cam 44 also rotates with the rotation of the first rocking cam 43, and the second follower 46 of the second holding member 39 always contacts the second cam surface 44b from the first cam surface 44a. Therefore, the supporting member 26 can be moved accurately.
[0020]
The second follower 46 of the second holding member 39 is shifted from the second cam surface 44b to the first cam surface 44a by the second swing cam 44 rotated by the drive motor 42, and the second holding member 39 moves forward. To do. Accordingly, the front and rear support cylinders 30 and 31 connected to the second holding member 39 via the front and rear second connection shafts 34 and 37 and the link plates 32 and 35 are centered on the fixed shafts 28 and 29 as shown in FIG. , The second swing lever 25 swings to the left. As a result, the support member 26 moves to the retracted position, and each chuck 27 moves from the front surface of the next-stage die 13 to the front surface of the previous-stage die 13. At this time, as the second swing cam 44 rotates, the first follower 45 of the first holding member 38 is always in contact with the cam surfaces 43b, 43a of the first swing cam 43. The support member 26 moves accurately. Further, since the support member 26 is reciprocated by the two swing cams 43 and 44, the mechanism can be simplified and the speed can be increased.
[0021]
Next, when exchanging the die 13, the mounting base 14 is rotated from the operating position to the retracted position around the rotating shaft 17. Accordingly, as shown in FIGS. 7 and 9, the chuck 27 disposed on the support member 26 is spaced upward from the front surface of the die 13 so that the die 13 can be replaced without any problem. The first follower 45 and the second follower 46 are separated from the cam surfaces of the corresponding first swing cam 43 and second swing cam 44 with the swing of the mounting base 14, and the swing mechanism 24. And the drive system are disconnected. When the exchange of the dies 13 is completed, the mounting base 14 is swung from the retracted position to the operating position, so that the first rocker cam 43 and the second rocker corresponding to the first follower 45 and the second follower 46 are obtained. The cam 44 comes into contact with the cam surface, and the swing mechanism 24 and the drive system are connected to return to a state where the material can be molded.
[0022]
That is, when the die 13 is exchanged, the chuck 27 is separated from the front surface of the die 13 without releasing the connection between the support member 26 on which the chuck 27 is disposed and the swing mechanism 24 that reciprocates the support member 26. Therefore, replacement work can be performed in a short time. Further, in the apparatus of the embodiment, the swing mechanism 24 is collectively arranged on the drive side opposite to the operation side where the operator is positioned with respect to the fixed frame 11, so that the die 13 or the punch is exchanged or adjusted. In the maintenance, the operator can work while approaching the fixed frame 11 from the operation side. That is, since the swing mechanism 24 does not exist on the operation side on which the worker performs work, the work can be performed safely and easily. Moreover, since the swing mechanism 24 is gathered at one end of the mounting base 14, the entire apparatus can be reduced in size.
[0023]
【The invention's effect】
As described above, according to the raw material transfer device of the multistage forging machine according to the present invention, when exchanging dies or the like, the support member on which the chuck is disposed, and the swing mechanism for reciprocating the support member, Since the chuck can be separated from the front surface of the die without releasing the connection, the replacement operation can be performed in a short time. In the apparatus of the embodiment, since the swing mechanism is collectively arranged on the drive side opposite to the operation side where the operator is positioned with respect to the fixed frame, maintenance such as exchange and adjustment of dies and punches is performed. The operator can work by approaching the fixed frame. In other words, since there is no swing mechanism on the operation side where the operator performs work, the work can be performed safely and easily. Further, as the swing cams rotate, the support member can be moved accurately because the follower of the corresponding holding member always makes contact with the cam surface of each swing cam. Since the supporting member is reciprocated by the two swing cams, the mechanism can be simplified and the speed can be increased.
[0024]
Further, since the swing mechanism is gathered at one end of the mounting base, the entire apparatus can be reduced in size. Further, since the swing mechanism is operated by using the swing cam, there is an advantage that the support member can achieve a reliable and high-speed horizontal swing.
[Brief description of the drawings]
FIG. 1 is a schematic plan view showing a forming section of a multistage forging machine in which a material transfer device according to an embodiment of the present invention is employed.
FIG. 2 is a schematic front view of a forming section of a multistage forging machine according to an embodiment.
FIG. 3 is a schematic side view of the swing mechanism in the molding portion of the multistage forging machine according to the embodiment, partially broken away.
FIG. 4 is a schematic side view of the swing mechanism in the forming section of the multistage forging machine according to the embodiment.
FIG. 5 is a cross-sectional plan view of an essential part showing a schematic configuration of a swing mechanism in a forming section of a multistage forging machine according to an embodiment.
FIG. 6 is a left side view showing a state in which the mounting base in the forming portion of the multistage forging machine according to the embodiment is positioned at the operating position.
FIG. 7 is a left side view showing a state in which the mounting base in the molding portion of the multistage forging machine according to the embodiment is positioned at the retracted position.
FIG. 8 is a right side view showing a state in which the mounting base in the forming section of the multistage forging machine according to the embodiment is positioned at the operating position.
FIG. 9 is a right side view showing a state in which the mounting base in the forming portion of the multistage forging machine according to the embodiment is positioned at the retracted position.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Fixed frame 13 Dies 14 Mounting stand 17 Rotating shaft 22 1st rocking lever 23 Housing 24 Oscillation mechanism 25 Second oscillation lever 26 Support member 27 Chuck
28 Front fixed shaft 29 Rear fixed shaft
30 Front support cylinder 31 Rear support tube
32 Link plate 32a Left extension
32b Right extension 33 Front first connecting shaft
34 Front second connecting shaft 35 Link plate
35a Left extension 35b Right extension
36 Rear first connecting shaft 37 Rear second connecting shaft 38 First holding member 39 Second holding member 40 Drive shaft 42 Drive motor (drive means)
43 First swing cam 44 Second swing cam 45 First follower 46 Second follower

Claims (2)

A plurality of dies (13) provided in a horizontal row at a constant interval on the front surface of the fixed frame (11), and a plurality of punches provided to move forward and backward corresponding to each die (13), between a retracted position separated upward from the working position and the upper surface is in contact placed on the upper surface of the fixed frame (11) about the pivot axis (17) disposed in said stationary frame (11) swinging A moving mounting base (14) and a plurality of chucks (27) for gripping the material corresponding to each die (13) are provided in a horizontal row and the mounting base (14) positioned at the operating position. In contrast, with the chuck (27) facing the front surface of the die (13) , the chuck (27) is disposed so as to be horizontally swingable via a pair of swing levers (22, 25), and the mounting base (14) is placed in the retracted position. becomes because the chuck by swinging (27) and the die front face configured to be separated retracted upward from has been supporting member (13) (26), the mount (1 A multi-stage type that is configured so that the material pressed by each die (13) and punch is gripped by the chuck (27) and sequentially transferred to the front surface of the next die (13) with 4) positioned in the operating position. In the forging machine,
The driving side of the multi-stage forging molding machine definitive in the mount (14), parallel to which is arranged so as to integrally swing with the platform with said mounting (14), said one of the swing lever (25) is connected Link structure swing mechanism (24),
The swinging mechanism (24) is disposed on the swinging mechanism (24) to move in the front-rear direction to actuate the swinging mechanism (24) and horizontally swing the support member (26) via the swinging lever (25). A first holding member (38) and a second holding member (39) extending parallel to the first holding member (38) ;
A second follower (46) which is pivotally supported on the first follower and pivotally supported on the first holding member (38) (45) and said second retaining member (39),
A drive shaft (40) that is parallel to the rotation shaft (17) and rotatably disposed on the fixed frame (11) and is rotated by a drive means (42),
Is integrally rotatably disposed on the drive shaft (40), its outer peripheral surface, before Symbol outer circumferential surface first swing cam abuts rollably (43) and the first first follower (45) is integrally rotatably disposed on the drive shaft (40) in parallel to the oscillating cam (43), on the outer peripheral surface thereof, the second swing the outer peripheral surface abuts rollably before Symbol second follower (46) Composed of cam (44)
In a state where the mounting base (14) is positioned at the operating position, the drive shaft (40) is brought into contact with the outer peripheral surface of the first swing cam (43) through the outer peripheral surface of the first follower (45). When the first holding member (38) advances, the second holding member (39) is in contact with the outer peripheral surface of the second follower (46) in parallel with the outer peripheral surface of the second swing cam (44). When the second holding member (39) that moves backward and contacts the outer peripheral surface of the second swing cam (44) via the outer peripheral surface of the second follower (46) moves forward, the first holding member (38 ) with is set so that the outer peripheral surface of the first follower (45) is retracted while in contact in a parallel relationship to the outer peripheral surface of the first swing cam (43),
By swinging the mounting base (14) from the operating position to the retracted position, the corresponding follower (45, 46) is separated from the pair of swing cams (43, 44), and the swing mechanism (24) A material transfer device for a multistage forging machine, characterized in that the connection of the drive system to (24) is released. The swing mechanism (24),
A pair of fixed shafts (28, 29) spaced apart from each other at a substantially central position in the lateral direction of the housing (23) disposed so as to swing integrally with the mount (14) ;
A front support cylinder (30) that is rotatably fitted to a front fixed shaft (28) positioned on the front side and integrally formed with the one swing lever (25) , and a rear fixed shaft positioned on the rear side ( 29) a rear support cylinder (31) that is rotatably fitted to the
A pair of link plates (32, 32, 35, 35) disposed on each of the front support cylinder (30) and the rear support cylinder (31) and spaced apart from each other in parallel ;
A front first connecting shaft (33) and a right extending portion ( between the left extending portions (32a, 32a) of both link plates (32, 32) disposed in the front supporting cylinder (30) ( 32b, 32b) and the front second connecting shaft (34) ,
The rear first connecting shaft (36) and the right extension part (35b ) arranged between the left extension parts (35a, 35a) of both link plates (35 , 35) arranged in the rear support cylinder (31). made from 35b) disposed between the second rear connection shaft (37),
The first holding member (38) is rotatably held by the front and rear first connecting shafts (33, 36), and the second holding member (39) is fixed by the front and rear second connecting shafts (34, 36) . 37) is rotatably held,
By moving the first holding member (38) and the second holding member (39) in the front-rear direction, the front support cylinder (30) rotates about the front fixed shaft (28) , swing lever (25) is the material transfer device of multi-stage forging molding machine configuration claims 1, wherein to reciprocally swing laterally.

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