CN115213334A

CN115213334A - Closed height compensation device of die forging machine

Info

Publication number: CN115213334A
Application number: CN202210914610.7A
Authority: CN
Inventors: 邓国瑞; 朱元胜; 李勋; 黄勇超; 张华德; 孙百海
Original assignee: China Forge Intelligent Equipment Design Institute Qingdao Co ltd
Current assignee: China Forge Intelligent Equipment Design Institute Qingdao Co ltd
Priority date: 2022-08-01
Filing date: 2022-08-01
Publication date: 2022-10-21

Abstract

The invention discloses a closed height compensation device of a die forging machine, belonging to the technical field of forging and pressing; the height compensation device comprises a connecting rod mechanism, a sliding block arranged at the lower end of the connecting rod mechanism and a height compensation assembly arranged at the joint of the connecting rod mechanism and the sliding block; the height compensation assembly comprises an eccentric shaft and a driving assembly for driving the eccentric shaft to swing; two ends of the eccentric shaft are connected with the connecting rod mechanism, the connecting position of the connecting rod mechanism and the eccentric shaft is an eccentric point, and the middle of the axis of the eccentric shaft is rotationally connected with the sliding block. The height compensation assembly can finely adjust the distance between the sliding block and the connecting rod, so that the height of the sliding block can be controlled, overlarge impact force cannot be generated between an upper die and a lower die when the die forging machine is used for assembling the die, and abrasion of the die is reduced.

Description

Closed height compensation device of die forging machine

Technical Field

The invention relates to the technical field of forging and pressing, in particular to a closed height compensation device of a die forging machine

Background

The die forging machine transfers the motion and energy of the motor to the crankshaft through a transmission system, so that the crankshaft rotates, and the slide block reciprocates through the connecting rod. The motor drives the crankshaft to rotate through the pinion, the gearwheel (flywheel) and the clutch, and then the slide block reciprocates in the guide rail of the machine body through the connecting rod. The upper die of the die is fixed on the sliding block, the lower die is fixed on the machine body workbench, the press machine can pressurize the punched material placed between the upper die and the lower die, and the material is punched into a workpiece by the die, so that the press processing is realized.

In the process of forging and pressing, the sliding block drives the upper die to move downwards to realize die assembly, but in the process of die assembly, the stroke of the upper die needs to be controlled, so that when the upper die is contacted with the lower die, the impact force is basically zero, and the phenomenon that the upper die and the lower die collide with each other to influence the service life of the die is avoided.

Disclosure of Invention

In order to reduce the compound die in-process, go up mould and lower mould and produce the probability that the collision leads to mould wearing and tearing, this application provides a die forging machine and seals height-compensating device.

The application provides a closed height compensation device of a die forging machine, which comprises a connecting rod mechanism, a sliding block and a height compensation assembly, wherein the sliding block is arranged at the lower end of the connecting rod mechanism;

the height compensation assembly comprises an eccentric shaft and a driving assembly for driving the eccentric shaft to swing;

the two ends of the eccentric shaft are connected with the connecting rod mechanisms, the connecting positions of the connecting rod mechanisms and the eccentric shaft are eccentric points, and the middle of the axis of the eccentric shaft is rotationally connected with the sliding block

Through adopting above-mentioned technical scheme, eccentric shaft and link mechanism's junction is the eccentric point, and eccentric shaft and slider rotate to be connected, so the eccentric shaft is along the swing of self axis, can change the position of link mechanism lower extreme, but link mechanism installs on the die forging machine, itself highly can not adjust, so can order about the height of slider relatively and change, thereby reach the purpose of adjusting the slider height, highly compensate the slider, make the last mould stroke of installing at the slider lower extreme change, can not produce the collision when going up mould and bed die compound die, can also realize the compound die, and then reduce between the mould because the collision produces the problem of harm.

Optionally, a circle of connecting ring is fixedly connected to the outer peripheral surface of the eccentric shaft, the connecting ring is sleeved on the eccentric shaft, the connecting ring is in a normal annular shape, and the connecting ring is located at the middle part of the eccentric shaft in the length direction;

the upper end of the sliding block is provided with an arc-shaped groove, the eccentric shaft is positioned in the arc-shaped groove, the upper end of the sliding block is also bolted with an arc-shaped end cover, and the end cover is buckled on the connecting ring.

Through adopting above-mentioned technical scheme, the go-between of normal annular shape can make slider and eccentric shaft be normal running fit, rather than eccentric running fit, so can make the swing of eccentric shaft control the height of slider, and through the connected mode of end cover lock at the go-between, the installation of the eccentric shaft of being convenient for is dismantled.

Optionally, the driving assembly includes a worm arranged on the slider and a stepping motor driving the worm to rotate;

the outer peripheral surface of the connecting ring is provided with teeth, and the teeth and the worm are meshed to form a worm and gear structure.

Through adopting above-mentioned technical scheme, step motor can control the worm and carry out just reversal, and tooth and the worm meshing on the go-between, so the worm rotates and to order about the go-between and rotate certain angle, and then reaches and order about the eccentric shaft and carry out wobbling purpose.

Optionally, the link mechanism comprises a connecting shaft sleeve and a connecting block fixedly connected with the lower surface of the connecting shaft sleeve, and the lower surface of the connecting block is fixedly connected with two symmetrical connecting plates;

two connecting plates are respectively attached to two ends of the eccentric shaft, eccentric holes are formed in the connecting plates, eccentric shaft sleeves are arranged in the eccentric holes in a penetrating mode, and the end portions of the eccentric shaft sleeves and the eccentric shaft are bolted.

Through adopting above-mentioned technical scheme, eccentric sleeve can rotate in eccentric hole, and the end connection of eccentric sleeve and eccentric shaft, so the existence of eccentric sleeve can make the rotation of eccentric shaft can not receive the influence of connecting plate up-and-down motion, and two connecting plates are laminated respectively at the both ends of eccentric shaft simultaneously, so can prevent that eccentric sleeve from breaking away from in the eccentric hole.

Optionally, a cross shaft is inserted into an eccentric shaft line of the eccentric shaft, two end sleeves of the cross shaft protrude out of two ends of the eccentric shaft, and the protruding end part of the cross shaft extends into the eccentric shaft sleeve.

Through adopting above-mentioned technical scheme, the connecting plate passes through eccentric sleeve and eccentric shaft connection, and eccentric sleeve and eccentric shaft bolt joint are in the same place, so the effort between eccentric shaft and the eccentric sleeve is whole to be acted on the bolt of bolt usefulness, and the bolt receives be the shearing force, so cause the bolt to produce deformation or even fracture easily, cause the influence to the compensation effect of height compensation subassembly, the both ends of cross axle support eccentric sleeve, can reduce the shearing force that the bolt received, and then reduce the probability that the bolt produced the deformation, make the compensation effect of height compensation subassembly can not receive the influence.

Optionally, the lower surface of the connecting block is also provided with an arc-shaped groove, and the lower surface of the connecting block is provided with two arc-shaped copper tiles which are located on two sides of the connecting ring and attached to the surface of the eccentric shaft.

Through adopting above-mentioned technical scheme, the copper shoe can compensate the eccentric disappearance part of eccentric shaft, makes eccentric shaft and copper shoe constitute complete cylinder, and the eccentricity of eccentric shaft is not eccentric, makes better the swing between connecting block, slider of eccentric shaft, and the junction of connecting plate still is located the eccentric play of eccentric shaft for the slider simultaneously, so the swing of eccentric shaft can realize the compensation to the slider height, can not be because of the existence of copper shoe, and influence the effect of eccentric shaft to high compensation. The brasses can reduce the abrasion of the eccentric shaft and prolong the service life of the eccentric shaft.

Optionally, a rib is integrally formed on the upper surface of the copper tile, the length direction of the rib is the same as the width direction of the copper tile, and a positioning groove capable of accommodating the rib is formed in the arc-shaped groove on the connecting block;

the draw-in groove has been seted up to the lower surface of brasses, and fixedly connected with can block into the fixture block of draw-in groove on the eccentric shaft.

Through adopting above-mentioned technical scheme, the existence of bead and constant head tank can make the brasses can not produce fore-and-aft removal, and then makes the brasses can not produce the collision with connecting plate or go-between to reduce the impaired probability of brasses, the cooperation of draw-in groove and fixture block can prevent that the rolling in-process of eccentric shaft from producing and falling.

Optionally, a limiting plate is arranged at one end of the eccentric shaft, and the length direction of the limiting plate is the same as the radius direction of the eccentric shaft;

the lower end of the limiting plate protrudes out of the peripheral side of the eccentric shaft, the sliding block is provided with a limiting groove, the lower end of the limiting plate extends into the limiting groove, and the limiting plate swings in the limiting groove.

Through adopting above-mentioned technical scheme, the cooperation of limiting plate and spacing groove can carry out spacingly to the biggest swing angle of eccentric shaft, avoids the eccentric shaft hunting range too big.

Optionally, an installation groove is formed in the end portion of the eccentric shaft, and the limiting plate is bolted in the installation groove.

Through adopting above-mentioned technical scheme, the existence of mounting groove can make the limiting plate can not stick out the tip of eccentric shaft to avoid the limiting plate to cause the influence to being connected of connecting plate and eccentric shaft.

Optionally, the eccentric shaft sleeve and the cross shaft are both sleeved with copper sleeves, the copper sleeve on the eccentric shaft sleeve is located between the eccentric shaft sleeve and the eccentric hole, the copper sleeve on the cross shaft is located between the cross shaft and the eccentric shaft, the number of the copper sleeves on the cross shaft is two, and the two copper sleeves are respectively arranged near two ends of the eccentric shaft.

Through adopting above-mentioned technical scheme, the wearing and tearing that eccentric sleeve and cross axle produced can be reduced in the existence of copper sheathing, and then the life of eccentric sleeve and cross axle can be improved.

In view of the above, it is possible to provide,

1. the height compensation assembly is arranged between the connecting rod mechanism and the sliding block, the connecting rod mechanism is connected with the eccentric shaft in an eccentric mode, the eccentric shaft is connected with the sliding block in a rotating mode, the eccentric shaft swings, the eccentricity can be reduced or increased, the connecting rod mechanism can be increased or decreased relative to the sliding block, the actual height of the connecting rod mechanism is controlled by the flywheel, the purpose of controlling the height of the sliding block is achieved, the purpose of height compensation of the sliding block is achieved, the upper die arranged at the lower end of the sliding block cannot collide with the lower die in the die closing process, the service life of the die is prolonged, and the effect of die closing cannot be influenced.

2. The worm in the driving assembly is contacted with the connecting ring on the eccentric shaft, and the connecting ring is provided with teeth which can be meshed with the worm, so that the cloth motor drives the worm to rotate positively and negatively, the eccentric shaft can be driven to swing, and the worm drive can enable the eccentric shaft to rotate more stably;

3. the eccentric shaft is provided with the copper bush, and the copper bush can compensate the eccentric side of the eccentric shaft, so that the eccentric position on the eccentric shaft is not eccentric any more, and the eccentric shaft is convenient to rotate.

Drawings

Fig. 1 is a schematic view of the overall structure of the height compensation device in the embodiment.

FIG. 2 is a sectional view showing the cooperation of the eccentric shaft, the slider, and the link mechanism in the embodiment.

FIG. 3 is a sectional view showing the structure of the driving unit in the embodiment.

FIG. 4 is a cross-sectional view of a highlighted end cap mounting structure in the embodiment.

Fig. 5 is an enlarged view of a portion a in fig. 3.

Description of the reference numerals:

1. a link mechanism; 11. connecting the shaft sleeve; 12. connecting blocks; 13. a connecting plate; 14. an eccentric hole; 15. an eccentric shaft sleeve; 2. a slider; 21. a cavity; 22. a stepping motor; 23. a drive gear; 24. a driven gear; 25. accommodating a tank; 26. a cover plate; 27. a limiting groove; 3. an eccentric shaft; 31. a horizontal axis; 32. a copper sleeve; 33. mounting grooves; 4. a drive assembly; 41. a connecting ring; 42. a worm; 43. teeth; 5. an arc-shaped slot; 51. a groove; 52. a yielding groove; 53. a copper tile; 531. a rib; 532. positioning a groove; 533. a card slot; 534. a clamping block; 6. an end cap; 61. a fixing plate; 62. pressing a plate; 63. bolting the plate; 7. and a limiting plate.

Detailed Description

The embodiment of the application discloses die forging machine seals height compensation device, refer to fig. 1, height compensation device includes link mechanism 1 and locates the slider 2 of link mechanism 1 lower extreme, link mechanism 1 and slider 2 install the back on the die forging machine, the flywheel among link mechanism 1 and the power device is connected, slider 2 is located the punching press part of die forging machine and divides, link mechanism 1 drives slider 2 and reciprocates, the mould is installed to the lower extreme of slider 2, the lower mould is installed to the below of slider 2, slider 2 reciprocates the removal that drives the mould, the material is put on the lower mould, it moves down and the lower mould compound die to go up the mould, thereby carry out the die forging to the material, form required shape.

Referring to fig. 2 and 3, a height compensation assembly is further arranged at the joint of the connecting rod mechanism 1 and the sliding block 2, and comprises an eccentric shaft 3 and a driving assembly 4 for driving the eccentric shaft 3 to swing; the two ends of the eccentric shaft 3 are connected with the connecting rod mechanism 1, the body of the eccentric shaft 3 is connected with the sliding block 2, and the eccentric shaft 3 can swing, so that the distance between the connecting rod mechanism 1 and the sliding block 2 can be adjusted. In the process of closing the upper die and the lower die, if the downward movement stroke of the upper die is too large, the upper die and the lower die collide to easily damage the dies, but if the movement stroke of the upper die is not enough, the closing of the upper die and the lower die is not in place, so that the forged products have problems. The event is equipped with the height compensation subassembly, through the swing of height compensation subassembly eccentric shaft 3, can adjust the distance between slider 2 and the link mechanism 1, and then reaches the effect of adjusting the mould stroke, realizes the compensation to last module mounting height, and then makes the mould can carry out normal compound die, can also reduce the damage of mould.

Referring to fig. 2 and 3, the link mechanism 1 includes a connecting shaft sleeve 11 and a connecting block 12, the connecting shaft sleeve 11 is used for connecting with a shaft of the flywheel, the connecting block 12 is fixedly connected with the connecting shaft sleeve 11, two symmetrical connecting plates 13 are fixedly connected to the lower surface of the connecting block 12, and the two connecting plates 13 are respectively connected to the end portions of the two ends of the eccentric shaft 3. The connecting plates 13 are provided with eccentric holes 14, eccentric shaft sleeves 15 are sleeved in the eccentric holes 14, the end parts of the eccentric shaft sleeves 15 and the eccentric shafts 3 are bolted, and the end parts of the eccentric shafts 3 are attached to the side walls of the connecting plates 13, so that the eccentric shafts 3 are installed between the two connecting plates 13, and further the eccentric shafts 3 are installed on the connecting rod mechanisms 1.

Referring to fig. 2 and 3, a transverse shaft 31 is inserted into an eccentric shaft line of the eccentric shaft 3, two ends of the transverse shaft 31 are respectively located in the two eccentric shaft sleeves 15, and then the eccentric shaft sleeves 15 are sleeved on the transverse shaft 31, so that the transverse shaft 31 can support the eccentric shaft sleeves 15, the force applied to the eccentric shaft sleeves 15 cannot be completely applied to the bolts for bolting, the shearing force applied to the bolts is reduced, the service life of the bolts is prolonged, the deformation of the bolts can be reduced, the eccentric shaft sleeves 15 and the eccentric shaft 3 are caused to generate relative displacement, and the adjusting effect of the height compensation assembly cannot be influenced.

Referring to fig. 2 and 3, the peripheries of the eccentric shaft sleeve 15 and the transverse shaft 31 are both sleeved with the copper sleeve 32, and the eccentric shaft sleeve 15 is sleeved with the copper sleeve 32 to reduce the friction force applied to the eccentric shaft sleeve 15 and prolong the service life of the eccentric shaft sleeve 15. The number of the copper sleeves 32 sleeved on the cross shaft 31 is two, the two copper sleeves 32 are respectively arranged close to two ends of the eccentric shaft 3, shearing force can be generated between the end part of the eccentric shaft 3 and the cross shaft 31, so that the cross shaft 31 is more easily worn at the end part of the eccentric shaft 3, and the copper sleeves 32 can reduce the wear of the cross shaft 31.

Referring to fig. 2 and 3, the driving assembly 4 includes a connecting ring 41 sleeved on the eccentric shaft 3 and a worm 4242 arranged in the slider 2, the connecting ring 41 is located in the middle of the axis of the eccentric shaft 3, the connecting ring 41 is fixedly connected with the eccentric shaft 3, the connecting ring 41 is a normal circle, the axis of the connecting ring 41 does not coincide with the eccentric axis of the eccentric shaft 3, and the outer circumferential surface of the connecting ring 41 is provided with a circle of teeth 43; the axial direction of the worm 4242 is perpendicular to the axial direction of the eccentric shaft 3, the worm 4242 is meshed with the teeth 43 on the connecting ring 41, so that a worm gear mechanism is formed, and the worm 4242 rotates to drive the connecting ring 41 to rotate, so that the eccentric shaft 3 is driven to rotate.

Referring to fig. 2 and 3, a cavity 21 is formed in the slider 2, a worm 4242 is rotatably installed in the cavity 21, a stepping motor 22 is installed on a side wall of the slider 2, a driving gear 23 is installed on an output shaft of the stepping motor 22, a driven gear 24 is installed at one end of the worm 42 close to the stepping motor 22, and the driving gear 23 is meshed with the driven gear 24, so that the stepping motor 22 can drive the worm 42 to rotate.

Referring to fig. 2 and 3, an accommodating groove 25 is formed in the side wall of the slider 2, the driving gear 23 and the driven gear 24 are installed in the accommodating groove 25, a cover plate 26 is arranged at the notch of the accommodating groove 25, the cover plate 26 is bolted to the slider 2, the cover plate 26 shields the accommodating groove 25, the driving gear 23 and the driven gear 24 are not exposed outside, and the driving gear 23 and the driven gear 24 are prevented from being engaged with each other and affected by external foreign matters.

Referring to fig. 2 and 3, an arc-shaped groove 5 is formed in one end, close to each other, of the sliding block 2 and the connecting block 12, the length direction of the arc-shaped groove 5 is the same as the axial direction of the eccentric shaft 3, and the arc-shaped groove 5 is used for accommodating the existence of the eccentric shaft 3; a groove 51 is formed in the bottom surface of the arc-shaped groove 5 on the slider 2, the groove 51 extends along the width direction of the arc-shaped groove 5, the groove 51 can accommodate the connecting ring 41, and the groove 51 also provides a space for the rotation of the connecting ring 41; the recess 51 communicates with the cavity 21 to facilitate engagement of the worm 42 with the teeth 43.

Referring to fig. 3 and 4, the end cap 6 is disposed at the upper end of the slider 2, the end cap 6 is disposed in an arc shape, and the end cap 6 is fastened to the connection ring 41, so that the end cap 6 can connect the eccentric shaft 3 and the slider 2 together. One end of the end cover 6 is hinged with the sliding block 2, the other end of the end cover 6 is fixedly connected with a fixing plate 61, when the end cover 6 is buckled on the eccentric shaft 3, the fixing plate 61 is attached to the sliding block 2, a pressing plate 62 is arranged on the fixing plate 61, two ends of the pressing plate 62 are fixedly connected with L-shaped rows of bolting plates 63, and the transverse parts of the bolting plates 63 are bolted to the sliding block 2. One end of the end cover 6 is bolted with the sliding block 2, and the other end of the end cover 6 is hinged with the sliding block 2, so that the end cover 6 can be conveniently opened and buckled, and the eccentric shaft 3 can be conveniently installed and connected.

Referring to fig. 2 and 4, the bottom surface of the arc-shaped groove 5 of the connecting block 12 is provided with an avoiding groove 52, and the avoiding groove 52 can accommodate the end cover 6 and the connecting ring 41, so that the installation of the end cover 6 is not affected. The installation of the eccentric shaft 3 is also facilitated.

Refer to fig. 5, still be equipped with two brasses 53 in the arc wall 5 of connecting block 12 lower extreme, the surface laminating of brasses 53 and eccentric shaft 3, and two brasses 53 are located the both sides setting of go-between 41, brasses 53's effect is one and is filled the eccentric side of eccentric shaft 3, make eccentric shaft 3 become normal axle, then eccentric shaft 3's axis is no longer eccentric, and then can make eccentric shaft 3 more smooth at the wobbling in-process, brasses 53 can also reduce the wearing and tearing that eccentric shaft 3 received, improve eccentric shaft 3's life.

Referring to fig. 5, the upper surface integrated into one piece of brasses 53 has bead 531, the length direction of bead 531 is the same with the width direction of brasses 53, still open in the arc wall 5 on connecting block 12 and be equipped with the constant head tank 532 that can hold bead 531, the cooperation of constant head tank 532 and bead 531 can be fixed a position brasses 53, the position that makes brasses 53 install is more accurate, can also make brasses 53 can not produce fore-and-aft removal, make brasses 53 can not produce the collision with the lateral wall of arc wall 5 and go-between 41, and then reduce brasses 53 because the striking produces impaired probability.

Referring to fig. 5, a clamping groove 533 is formed in the lower surface of the copper shoe 53, and a clamping block 534 capable of being clamped into the clamping groove 533 is formed in the upper surface of the eccentric shaft 3, so that the copper shoe 53 can be clamped with the eccentric shaft 3, and the copper shoe 53 can be prevented from sliding down from one end due to the swing of the eccentric shaft 3.

Referring to fig. 2, a mounting groove 33 is further formed in one end of the eccentric shaft 3, a limiting plate 7 is mounted in the mounting groove 33, one end of the limiting plate 7 is located in the mounting groove 33, the other end of the limiting plate 7 protrudes out of the periphery of the eccentric shaft 3, a limiting groove 27 is formed in the sliding block 2, the end of the limiting plate 7 is located in the limiting groove 27, and the limiting plate 7 can reciprocate in the limiting groove 27.

The specific working process of the embodiment is as follows: when the height compensation assembly compensates the height of the sliding block 2, the stepping motor 22 is started, the worm 42 is driven to rotate through the matching of the driving gear 23 and the driving gear, the worm 42 only rotates for a certain angle, and then the eccentric shaft 3 is driven to rotate slightly, because the connecting plate 6313 in the connecting rod mechanism 1 is connected with the end part of the eccentric shaft 3, and the connecting plate 6313 is connected with the eccentric part of the eccentric shaft 3, but the sliding block 2 is connected with the eccentric shaft 3, and the sliding block 2 is matched with the normal axis part on the eccentric shaft 3, so that the eccentric shaft 3 swings, the distance between the connecting rod mechanism 1 and the sliding block 2 can be changed, and the connecting rod mechanism 1 and the sliding block 2 are vertically installed in the die forging machine, and therefore the height compensation of the sliding block 2 can be performed.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a die forging machine seals height compensation device, includes link mechanism (1) and locates slider (2) of link mechanism (1) lower extreme, its characterized in that: the height compensation assembly is arranged at the joint of the connecting rod mechanism (1) and the sliding block (2);

the height compensation assembly comprises an eccentric shaft (3) and a driving assembly (4) for driving the eccentric shaft (3) to swing;

two ends of the eccentric shaft (3) are connected with the connecting rod mechanism (1), the connecting part of the connecting rod mechanism (1) and the eccentric shaft (3) is an eccentric point, and the middle of the axis of the eccentric shaft (3) is rotationally connected with the sliding block (2).

2. A swager closure height compensation device according to claim 1, wherein: the outer peripheral surface of the eccentric shaft (3) is fixedly connected with a circle of connecting ring (41), the connecting ring (41) is sleeved on the eccentric shaft (3), the connecting ring (41) is in a normal annular shape, and the connecting ring (41) is positioned at the middle part of the eccentric shaft (3) in the length direction;

an arc-shaped groove (5) is formed in the upper end of the sliding block (2), the eccentric shaft (3) is located in the arc-shaped groove (5), an arc-shaped end cover (6) is further bolted to the upper end of the sliding block (2), and the end cover (6) is buckled on the connecting ring (41).

3. A swager closure height compensation device according to claim 1, wherein: the driving assembly (4) comprises a worm (42) arranged on the sliding block (2) and a stepping motor (22) driving the worm (42) to rotate;

the outer peripheral surface of the connecting ring (41) is provided with teeth (43), and the teeth (43) and the worm (42) are meshed to form a worm gear (42).

4. A swager closure height compensation device according to claim 1, wherein: the connecting rod mechanism (1) comprises a connecting shaft sleeve (11) and a connecting block (12) fixedly connected with the lower surface of the connecting shaft sleeve (11), and the lower surface of the connecting block (12) is fixedly connected with two symmetrical connecting plates (13);

two connecting plates (13) are respectively attached to two ends of the eccentric shaft (3), an eccentric hole (14) is formed in each connecting plate (13), an eccentric shaft sleeve (15) penetrates through each eccentric hole (14), and the end portions of the eccentric shaft sleeves (15) and the eccentric shaft (3) are bolted.

5. A die forging machine closing height compensating device according to claim 4, wherein: a transverse shaft (31) is inserted on the line of the eccentric shaft (3), two ends of the transverse shaft (31) are sleeved and protruded out of two ends of the eccentric shaft (3), and the protruded end part of the transverse shaft (31) extends into the eccentric shaft sleeve (15).

6. A swager closure height compensation device according to claim 1, wherein: the lower surface of the connecting block (12) is also provided with an arc-shaped groove (5), the lower surface of the connecting block (12) is provided with two arc-shaped copper tiles (53), and the copper tiles (53) are positioned on two sides of the connecting ring (41) and attached to the surface of the eccentric shaft (3).

7. A swager closure height compensation device according to claim 6, wherein: a convex rib (531) is integrally formed on the upper surface of the copper tile (53), the length direction of the convex rib (531) is the same as the width direction of the copper tile (53), and a positioning groove (532) capable of accommodating the convex rib (531) is formed in an arc-shaped groove (5) in the connecting block (12);

the lower surface of the copper bush (53) is provided with a clamping groove (533), and the eccentric shaft (3) is fixedly connected with a clamping block (534) which can be clamped into the clamping groove (533).

8. A swager closure height compensation device according to claim 1, wherein: a limiting plate (7) is arranged at one end of the eccentric shaft (3), and the length direction of the limiting plate (7) is the same as the radius direction of the eccentric shaft (3);

the lower end of the limiting plate (7) protrudes out of the peripheral side of the eccentric shaft (3), a limiting groove (27) is formed in the sliding block (2), the lower end of the limiting plate (7) extends into the limiting groove (27), and the limiting plate (7) swings in the limiting groove (27).

9. A swager closure height compensation device according to claim 8, wherein: the end part of the eccentric shaft (3) is provided with a mounting groove (33), and the limiting plate (7) is bolted in the mounting groove (33).

10. A swager closure height compensation device according to claim 5, wherein: the eccentric shaft sleeve (15) and the transverse shaft (31) are both sleeved with copper sleeves (32), the copper sleeves (32) on the eccentric shaft sleeve (15) are positioned between the eccentric shaft sleeve (15) and the eccentric hole (14), the copper sleeves (32) on the transverse shaft (31) are positioned between the transverse shaft (31) and the eccentric shaft (3), the number of the copper sleeves (32) on the transverse shaft (31) is two, and the two copper sleeves (32) are respectively arranged close to two ends of the eccentric shaft (3).