CN114799021A

CN114799021A - Workpiece operating device for forging machine

Info

Publication number: CN114799021A
Application number: CN202210767611.3A
Authority: CN
Inventors: 王斌; 吕祥慧; 李素侠; 郑通; 黄森
Original assignee: Xuzhou Yongguan Casting Co ltd
Current assignee: Xuzhou Yongguan Casting Co ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2022-07-29
Anticipated expiration: 2042-07-01
Also published as: CN114799021B

Abstract

The invention discloses a workpiece operating device for a forging machine, which relates to the technical field of forging and comprises a walking track and a rail car, wherein a bearing plate capable of lifting is arranged on the rail car, a fixed cylinder with an axial lead perpendicular to the walking track is horizontally arranged on the bearing plate, a guide cylinder is rotatably arranged in the fixed cylinder through a bearing, a sleeve matched with a spline of the guide cylinder is sleeved at one end of the guide cylinder, a clamping mechanism capable of clamping a workpiece is arranged on the sleeve, and a push-pull mechanism capable of driving the sleeve to move along the guide cylinder and a rotating mechanism capable of driving the guide cylinder to rotate are arranged on the bearing plate. According to the workpiece operating device, the walking track, the rail car, the clamping mechanism, the rotating mechanism and other components are arranged, so that a single worker can adjust displacement, rotation and the like of the workpiece through the clamping mechanism, the labor is saved, the workpiece is better clamped, and the phenomenon of deviation caused by unstable clamping of the workpiece when the hammer hammers blow the workpiece is avoided.

Description

Workpiece operating device for forging machine

Technical Field

The invention relates to the technical field of forging, in particular to a workpiece operating device for a forging machine.

Background

A forging machine is an apparatus for forging a workpiece by hammering, for example, a steel ingot is repeatedly hammered to forge the steel ingot into a circular workpiece. When the steel ingot is in a high-temperature state, the steel ingot has higher ductility, and the steel ingot is hammered and forged by a forging machine, so that the steel ingot is easily processed into a circular ring shape. The forging piece is generally heavy, and when the hot forging is carried out, a plurality of workers are often required to use longer clamps to cooperate with operation to adjust the workpiece, so that the placing angle of the workpiece is changed, and the workpiece is forged into a required shape by cooperating with a forging machine. If the square ingot is forged into a ring, the square ingot is forged into a cylinder, then a through hole is punched in the center of the cylinder by utilizing the circular platform-shaped steel ingot and the hammer head, finally the supporting shaft penetrates through the through hole to support the annular workpiece, the supporting shaft is supported on the supporting seat, and the hammer head hammers the annular workpiece, so that the purpose of expanding the diameter of the circular ring is achieved. However, the mode of adjusting the workpiece by adopting the long clamp consumes physical power, occupies more manpower, and causes the workpiece to be deviated when hammering due to unstable clamping.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides the workpiece operating device for the forging machine, workers can rotate, turn, adjust the position and the like of the workpiece by using the workpiece operating device, cooperation of multiple workers is not needed, labor is saved, and the clamping effect is better.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a work piece operating means for forging machine, including walking track and railcar, the railcar can be walked along the walking track, be provided with the loading board that can go up and down on the railcar, horizontal installation has axial lead and walking track vertically solid fixed cylinder on the loading board, install the guide cylinder through the bearing rotation in the solid fixed cylinder, the sleeve with guide cylinder spline complex is cup jointed to the one end of guide cylinder, be provided with the fixture that can the centre gripping work piece on the sleeve, be provided with the push-and-pull mechanism that can drive the sleeve and remove along the guide cylinder and can drive the rotatory rotary mechanism of guide cylinder on the loading board, the activity is pegged graft in the guide cylinder has the back shaft, the back shaft can stretch out the guide cylinder near fixture's one end, the back shaft can insert in the through-hole of work piece under the cooperation with fixture.

Preferably, the clamping mechanism comprises two support arms symmetrically arranged on two sides of the sleeve, supports are arranged on the support arms, one support is fixedly connected with the support arms, the other support is movably sleeved on the support arms, a clamping hydraulic cylinder is arranged between the two supports, and the supports are provided with clamping arms.

Preferably, the clamping arm is kept away from telescopic one end and is rotated and install the round pin axle, and two one end fixedly connected with clamping heads that the round pin axle is relative, and the round pin axle is kept away from the one end fixedly connected with pendulum rod of clamping head, and the pendulum rod articulates there is the pull rod, and the last activity of clamping arm has cup jointed the sliding sleeve, and the one end that the pendulum rod was kept away from to the pull rod articulates on the sliding sleeve, is provided with the upset pneumatic cylinder between support and the sliding sleeve.

Preferably, the side of the clamping head, which is matched with the workpiece, is provided with a curved surface part.

Preferably, the rotating mechanism comprises a first motor arranged on the bearing plate, a first chain wheel sleeved on the guide cylinder and a second chain wheel arranged on an output shaft of the first motor, and chains are wound on the first chain wheel and the second chain wheel.

Preferably, the supporting shaft is provided with a spline groove and a rack groove at one end far away from the clamping mechanism, a spline matched with the spline groove on the supporting shaft is arranged in the guide cylinder, a rack is arranged in the rack groove, a support and a motor II are arranged at one end far away from the clamping mechanism of the guide cylinder, a rotating shaft is rotatably arranged on the support, a gear II and a gear I meshed with the rack are fixedly sleeved on the rotating shaft, a gear III is arranged on an output shaft of the motor II, and the gear II is meshed with the gear III.

Preferably, the push-pull mechanism comprises a limiting flange arranged on the sleeve and an axial hydraulic cylinder arranged on the bearing plate, and the output end of the axial hydraulic cylinder is provided with a limiting chuck matched with the limiting flange.

Compared with the prior art, the invention has the beneficial effects that:

1. through the arrangement of the components such as the walking track, the rail car, the bearing plate and the like, the displacement of the clamping mechanism in one direction can be realized through the matching of the rail car and the walking track, the sleeve is driven by the push-pull mechanism to move on the guide cylinder, the displacement of the clamping mechanism in the other direction can be realized, the lifting of the bearing plate on the rail car can realize the lifting of the clamping mechanism, the guide cylinder is driven by the rotating mechanism to rotate, and further the rotation of the clamping mechanism is realized, a single worker can adjust the displacement, the rotation and the like of a workpiece by using the clamping mechanism through the workpiece operating device, the labor is saved, the clamping effect on the workpiece is better, and the phenomenon that the workpiece is displaced due to unstable clamping when a hammer head hammers the workpiece is avoided;

2. by arranging the components such as the turning hydraulic cylinder, the swing rod, the pull rod, the sliding sleeve and the like, after the clamping head is matched and clamped with a workpiece, the turning hydraulic cylinder can be used for driving the sliding sleeve to move on the clamping arm, and then the swing rod is pulled through the pull rod, so that the rotation of the clamping head is realized, and finally the workpiece is turned;

3. through the cooperation of clamping head and back shaft, the clamping head pushes away the work piece repeatedly, changes the contact position of work piece and back shaft, lets the work piece can rotate on the back shaft, constantly changes the cooperation position of work piece and tup to the realization is to the even expansion of work piece.

Drawings

FIG. 1 is a perspective view of the present invention in use with a forging machine;

FIG. 2 is a top view of the present invention;

FIG. 3 is a perspective view of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a partial schematic view of the sleeve of the present invention;

FIG. 6 is a schematic view of the rotary structure of the guide cylinder of the present invention;

FIG. 7 is a schematic view showing a moving structure of the supporting shaft according to the present invention;

FIG. 8 is a schematic view of the supporting shaft of the present invention engaged with the supporting platform to support the workpiece after punching;

FIG. 9 is a schematic view of the clamping head not contacting the workpiece after the supporting shaft bears the workpiece in accordance with the present invention;

FIG. 10 is a schematic view of the supporting shaft bearing the workpiece and the clamping head pushing against the workpiece according to the present invention.

In the figure: 1. the forging machine comprises a forging machine frame, 11, hammers, 12, a forging table, 13, a supporting seat, 131, a limiting groove, 2, a walking rail, 21, a rail car, 22, a lifting hydraulic cylinder, 23, a bearing plate, 24, a guide rod, 3, a fixing cylinder, 31, a bearing, 32, a guide cylinder, 321, a motor I, 322, a sprocket I, 323, a sprocket II, 324, a chain, 33, a sleeve, 331, a supporting arm I, 3311, a support seat I, 3312, a clamping arm, 3313, a clamping head, 33131, a curved surface part, 3314, a swing rod, 3315, a pull rod, 3316, a sliding sleeve, 3317, a turning hydraulic cylinder, 332, a supporting arm II, 3321, a support seat II, 333, a clamping hydraulic cylinder, 334, a limiting flange, 335, an axial hydraulic cylinder, 336, a limiting chuck, 34, a supporting shaft, 341, a rack, 331, 342, a support, 343, a rotating shaft, 344, a gear I, 345, a gear II, 346, a motor II, 347 and a gear III.

Detailed Description

The technical solutions in the implementation of the present invention will be made clear and fully described below with reference to the accompanying drawings, and the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

As shown in figure 1, the forging machine generally comprises a forging machine frame 1 and a hammer head 11, wherein the hammer head 11 can be driven by a hydraulic cylinder, a motor or a crank and the like to lift, a forging table 12 is arranged under the hammer head 11, and a workpiece to be forged is placed on the forging table 12.

As shown in fig. 1 to 10, a workpiece handling device for a forging machine according to an embodiment of the present invention can assist a worker in manipulating a workpiece, including moving a position of the workpiece, turning the workpiece by 90 °, adjusting an angle of the workpiece, and the like, and the manipulation can be performed by a single worker. Specifically, the workpiece operating device of the present invention includes a traveling rail 2, a rail car 21, and a bearing plate 23, where the traveling rail 2 is a linear rail, the rail car 21 can linearly reciprocate along the traveling rail 2, and the cooperation between the rail car 21 and the traveling rail 2 is recorded in the prior art, and the implementation structure thereof is also relatively simple, which is not described herein again.

A lifting hydraulic cylinder 22 is installed on the rail car 21, and the top of the lifting hydraulic cylinder 22 is connected with the bottom of the bearing plate 23. Meanwhile, four guide rods 24 are installed on the rail car 21, and the four guide rods 24 all penetrate through the bearing plate 23 and are in sliding fit with the bearing plate 23. Thus, when the lifting hydraulic cylinder 22 is operated, the bearing plate 23 can be lifted or the bearing plate 23 can be lowered, and the height of the bearing plate 23 can be adjusted.

The bearing plate 23 is fixedly provided with a fixed cylinder 3, the fixed cylinder 3 is horizontally arranged, and the axial lead of the fixed cylinder 3 is vertical to the walking track 2. A guide cylinder 32 is provided in the fixed cylinder 3, and as can be seen from fig. 2 and 3, both ends of the guide cylinder 32 extend out of the fixed cylinder 3, and a bearing 31 is installed between the guide cylinder 32 and the fixed cylinder 3. The guide cylinder 32 is close to the one end of forging machine and has been seted up the spline groove to cup jointed sleeve 33, set up on the inner wall of sleeve 33 with the spline groove complex spline on the guide cylinder 32, consequently can drive sleeve 33 when the guide cylinder 32 rotates and rotate.

The sleeve 33 is fixedly connected with a circle of limiting flanges 334, the bearing plate 23 is fixedly provided with an axial hydraulic cylinder 335, the axial line of the axial hydraulic cylinder 335 is parallel to the axial line of the sleeve 33, the output end of the axial hydraulic cylinder 335 is fixedly connected with a limiting clamp 336, and the limiting clamp 336 can limit the limiting flanges 334 from two sides of the limiting flanges 334, so that the limiting flanges 334 can be pushed or pulled when the axial hydraulic cylinder 335 extends or contracts, and the purpose of driving the sleeve 33 to move on the guide cylinder 32 is achieved. As can be seen when the apparatus is observed with reference to fig. 2, the traveling rail 2 and the rail car 21 are provided to move the sleeve 33 left and right, the axial hydraulic cylinder 335 is provided to move the sleeve 33 forward and backward, and the sleeve 33 is provided with a clamping mechanism capable of clamping a workpiece, so that the clamping mechanism can carry the workpiece to move left and right and forward and backward.

The clamping mechanism comprises two support arms which are symmetrically arranged on two sides of the sleeve 33, namely a support arm I331 and a support arm II 332, a support seat I3311 and a support seat II 3321 are arranged on the support arm I331 and the support arm II 332 respectively, wherein the support seat I3311 is fixedly connected with the support arm I331, the support seat II 3321 is sleeved on the support arm II 332 in a sliding manner, the clamping arms 3312 are fixedly connected on one sides of the support seat I3311 and the support seat II 3321 far away from the fixed cylinder 3, a clamping hydraulic cylinder 333 is arranged on the support seat I3311, and the output end of the clamping hydraulic cylinder 333 is connected with the support seat II 3321, so that when the clamping hydraulic cylinder 333 works, the two clamping arms 3312 can be driven to be close to or far away from each other.

The one end that the sleeve 33 was kept away from to centre gripping arm 3312 is pegged graft and is had the round pin axle that can rotate, and the equal fixedly connected with of the one end 3313 that two round pin axles are relative, and the centre gripping head 3313 is whole to be rectangle, and centre gripping head 3313 and work piece complex one side are for being curved surface portion 33131. Considering that the side wall of the workpiece is gradually smooth in the process of forging the workpiece into a cylinder from a cube, the curved surface portion 33131 of the surface where the clamping head 3313 and the workpiece are engaged can increase the contact area between the clamping head 3313 and the workpiece, thereby ensuring stable clamping.

The other end of the pin axis is fixedly connected with a swing rod 3314, the swing rod 3314 is perpendicular to the pin axis, a sliding sleeve 3316 is movably sleeved on the clamping arm 3312, the sliding sleeve 3316 is hinged with a pull rod 3315, and the other end of the pull rod 3315 is hinged with the swing rod 3314, so that when the sliding sleeve 3316 moves on the clamping arm 3312, the swing rod 3314 can be pushed and pulled by the pull rod 3315, and the swing rod 3314 drives the clamping head 3313 to rotate. When the two clamping heads 3313 are matched to clamp a workpiece, the rotation of the clamping heads 3313 can drive the workpiece to rotate, so as to realize the turnover of the workpiece.

The first support 3311 and the second support 3321 are both provided with a turning hydraulic cylinder 3317, and the two turning hydraulic cylinders 3317 are respectively connected with two sliding sleeves 3316. The movement of the slide sleeve 3316 is accomplished by use of a flip cylinder 3317, ultimately effecting the flip of the gripping head 3313 with the workpiece.

The bearing plate 23 is provided with a rotating mechanism capable of driving the guide cylinder 32 to rotate, the rotating mechanism drives the guide cylinder 32 to rotate so as to rotate the sleeve 33 and the clamping mechanism, and when the two clamping heads 3313 clamp a workpiece, the workpiece can be rotated by matching the lifting hydraulic cylinder 22 and the rotating mechanism, so that the side surface of the workpiece can be hammered by the hammer head 11.

Specifically, the rotating mechanism comprises a first motor 321 fixedly mounted on the bearing plate 23, a first chain wheel 322 is sleeved on the outer wall of one end, away from the clamping mechanism, of the guide cylinder 32, a second chain wheel 323 is fixedly sleeved on an output shaft of the first motor 321, and a chain 324 is wound on the first chain wheel 322 and the second chain wheel 323, so that the first motor 321 can control the rotation of the guide cylinder 32 through chain transmission. The first motor 321 may be a stepping motor, which facilitates control of the rotation angle.

In the process of expanding the diameter of the annular workpiece, the workpiece needs to be lifted by the supporting shaft 34, which is a very labor-consuming process in the conventional operation and can be completed by cooperation of a plurality of workers.

In order to further reduce the workload of workers and save labor. A long support shaft 34 is inserted into the guide cylinder 32, and the support shaft 34 can extend out from one end of the guide cylinder 32 close to the workpiece, so that the support shaft 34 can be inserted into the through hole of the workpiece, and the support shaft 34 can lift the workpiece when the lifting hydraulic cylinder 22 lifts the bearing plate 23.

Specifically, spline grooves and rack grooves are formed in the end of the support shaft 34 away from the sleeve 33, the rack grooves extend in the axial direction of the support shaft 34, and splines that mate with the spline grooves of the support shaft 34 are formed on the inner wall of the guide cylinder 32, so that when the guide cylinder 32 rotates, the support shaft 34 rotates along with the guide cylinder 32. The rack 341 is fixedly installed in the rack groove, and the rack 341 may be turned out of the rack groove. A bracket 342 and a second motor 346 are fixedly connected to one end of the guide cylinder 32 far away from the sleeve 33, a rotatable rotating shaft 343 is mounted on the bracket 342, a second gear 345 and a first gear 344 meshed with the rack 341 are fixedly sleeved on the rotating shaft 343, a third gear 347 is fixedly sleeved on an output shaft of the second motor 346, the diameter of the third gear 347 is smaller than that of the second gear 345, and the second gear 345 is meshed with the third gear 347. When the second motor 346 works, the third gear 347 drives the second gear 345 to rotate, the second gear 345 drives the first gear 344 to rotate, and the first gear 344 drives the rack 341 to move, that is, the support shaft 34 moves along the axial lead direction of the guide cylinder 32.

Since the second motor 346 and the bracket 342 are both fixed on the guide cylinder 32, the second motor 346 can still maintain the transmission relationship with the rack 341 when the guide cylinder 32 rotates. The movement of the support shaft 34 within the guide cylinder 32 is accomplished by activating the second motor 346 so that the support shaft 34 can pass through the through hole of the workpiece.

As shown in fig. 9 and 10, after the workpiece is lifted by the supporting shaft 34, the clamping head 3313 is repeatedly pushed against the workpiece by using the clamping hydraulic cylinder 333, so that the contact position of the workpiece with the supporting shaft 34 is changed, the workpiece can be rotated on the supporting shaft 34, and the engagement position of the workpiece with the hammer 11 is constantly changed, thereby achieving uniform expansion of the workpiece.

When in use: use other instruments earlier and place the work piece on forging platform 12 earlier, then start hydraulic cylinder 22 and realize the regulation to the high position of clamping head 3313, start railcar 21 and realize the regulation to the position about clamping head 3313, start axial pneumatic cylinder 335 and realize the regulation to the position around clamping head 3313, after the position of clamping head 3313 is suitable, start clamping hydraulic cylinder 333, let two 3321 of support remove to the direction of a 3311 of support, make the distance between two clamping heads 3313 reduce, the work piece can be cliied to final clamping head 3313. The lifting hydraulic cylinder 22 and the first motor 321 are started, the height of the clamping head 3313 and the angle of the guide cylinder 32 are adjusted, and then the rotation of the workpiece is realized, so that the side surface of the workpiece can be hammered by the hammer head 11, and the workpiece is gradually hammered into a cylinder.

Through using upset pneumatic cylinder 3317, the sliding sleeve 3316 moves on centre gripping arm 3312 and takes the pull rod 3315 to move, and pull rod 3315 is acted on pendulum rod 3314, lets pendulum rod 3314 take the centre gripping head 3313 rotatory, and then realizes the upset to the work piece for the terminal surface of cylinder work piece can be hammered to tup 11, changes the height of cylinder work piece.

When punching is needed, the clamping head 3313 can be driven to lift by the lifting hydraulic cylinder 22 to lift the workpiece, a die is placed below the workpiece, a circular table-shaped steel ingot is placed above the workpiece, the circular table-shaped steel ingot is hammered by the hammer head 11, and a through hole is punched in the workpiece.

When the diameter of the workpiece needs to be expanded, the workpiece after punching is erected firstly, the through hole faces the support shaft 34, the first gear 344 is driven by the second motor 346, the first gear 344 drives the rack 341 to move, namely the support shaft 34 is driven to extend out of the guide cylinder 32, the end part of the support shaft 34 penetrates through the through hole of the workpiece, the lifting hydraulic cylinder 22 is used for lifting the workpiece by the support shaft 34, then the support base 13 can be manually placed on the forging platform 12, the support shaft 34 is lowered to enable the support shaft 34 to fall on the limiting groove 131, and the workpiece is hammered by the hammer head 11 to expand the diameter of the workpiece. Meanwhile, the clamping hydraulic cylinder 333 can be used for driving the clamping head 3313 to repeatedly push against the workpiece, so that the contact position of the workpiece and the supporting shaft 34 is changed, the workpiece can rotate on the supporting shaft 34, the matching position of the workpiece and the hammer head 11 is continuously changed, and the workpiece is uniformly expanded.

The lifting hydraulic cylinder 22, the clamping hydraulic cylinder 333, the axial hydraulic cylinder 335, the overturning hydraulic cylinder 3317, the first motor 321, the second motor 346 and the rail car 21 can be controlled by control components such as a single chip microcomputer, and the like, so that the operation of workers is facilitated.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.

Claims

1. A workpiece operating device for a forging machine is characterized by comprising a traveling track (2) and a rail car (21), wherein the rail car (21) can travel along the traveling track (2), a bearing plate (23) capable of lifting is arranged on the rail car (21), a fixed cylinder (3) with an axis perpendicular to the traveling track (2) is horizontally arranged on the bearing plate (23), a guide cylinder (32) is rotatably arranged in the fixed cylinder (3) through a bearing (31), a sleeve (33) in spline fit with the guide cylinder (32) is sleeved at one end of the guide cylinder (32), a clamping mechanism capable of clamping a workpiece is arranged on the sleeve (33), a push-pull mechanism capable of driving the sleeve (33) to move along the guide cylinder (32) and a rotating mechanism capable of driving the guide cylinder (32) to rotate are arranged on the bearing plate (23), a supporting shaft (34) is movably inserted in the guide cylinder (32), one end, close to the clamping mechanism, of the supporting shaft (34) can extend out of the guide cylinder (32), and the supporting shaft (34) can be inserted into a through hole of a workpiece under the matching of the supporting shaft and the clamping mechanism.

2. The workpiece handling device for the forging machine according to claim 1, wherein the clamping mechanism comprises two support arms symmetrically arranged at both sides of the sleeve (33), the support arms are provided with support seats, one of the support seats is fixedly connected with the support arms, the other support seat is movably sleeved on the support arms, a clamping hydraulic cylinder (333) is arranged between the two support seats, and the support seats are provided with clamping arms (3312).

3. The workpiece operating device for the forging machine as claimed in claim 2, wherein one end of the clamping arm (3312) far away from the sleeve (33) is rotatably provided with a pin shaft, two opposite ends of the pin shaft are fixedly connected with clamping heads (3313), one end of the pin shaft far away from the clamping heads (3313) is fixedly connected with a swing rod (3314), the swing rod (3314) is hinged with a pull rod (3315), the clamping arm (3312) is movably sleeved with a sliding sleeve (3316), one end of the pull rod (3315) far away from the swing rod (3314) is hinged on the sliding sleeve (3316), and a turning hydraulic cylinder (3317) is arranged between the support and the sliding sleeve (3316).

4. A workpiece handling device for a forging machine as set forth in claim 3, wherein a curved surface portion (33131) is provided on a side where said gripping head (3313) engages with the workpiece.

5. The workpiece handling device for the forging machine according to claim 1, wherein the rotating mechanism comprises a first motor (321) provided on the bearing plate (23), a first sprocket (322) sleeved on the guide cylinder (32), and a second sprocket (323) provided on an output shaft of the first motor (321), wherein the first sprocket (322) and the second sprocket (323) are wound with chains (324).

6. The workpiece operating device for the forging machine is characterized in that a spline groove and a rack groove are formed in one end, away from the clamping mechanism, of the supporting shaft (34), splines matched with the spline groove in the supporting shaft (34) are arranged in the guide cylinder (32), a rack (341) is arranged in the rack groove, a bracket (342) and a second motor (346) are arranged at one end, away from the clamping mechanism, of the guide cylinder (32), a rotating shaft (343) is rotatably arranged on the bracket (342), a second gear (345) and a first gear (344) meshed with the rack (341) are fixedly sleeved on the rotating shaft (343), a third gear (347) is arranged on an output shaft of the second motor (346), and the second gear (345) is meshed with the third gear (347).

7. A workpiece handling device for a forging machine according to claim 1, wherein said push-pull mechanism comprises a position-defining flange (334) provided on the sleeve (33) and an axial hydraulic cylinder (335) provided on the carrier plate (23), the output end of said axial hydraulic cylinder (335) being provided with a position-defining collet (336) cooperating with the position-defining flange (334).