Track shoe trimming and punching composite tooling and use method thereof

Abstract

The present invention relates to a track plate trimming and punching composite tooling and a method for using the tooling, the tooling includes a trimming punch supporting a forging, a trimming die cooperating with the trimming punch to cut off the outer flash of the forging, and a punch for punching the forging and connected to an upper pad, the trimming die is connected to a plurality of first guide posts extending upward and connected to the upper pad, the first guide posts are also provided with a top material plate that pushes against the forging, and the first guide posts are sleeved with a spring that connects the top material plate and the upper pad. The present invention can facilitate the separation of the punch from the forging, the trimming die from the forging, and facilitate the production of the next forging through the provision of the top material plate, the first guide posts, and the spring; through the provision of the guide plate, the guide wheel, the pulling arm, and the limiting arm, when the cutting plate die moves downward, the pulling arm rotates under the drive of the guide plate and the guide wheel, the limiting arm pushes against the top material plate, and limits the movement of the top material plate, thereby avoiding the situation where the forging cannot be limited from moving upward due to insufficient spring elasticity.

Description

Technical Field

[0001] The utility model relates to the field of forging production, in particular to the technical field of automatic unloading and stripping of forgings, and specifically refers to a track plate trimming and punching composite tooling and a use method thereof. Background Art

[0002] In the production process of forgings, a punch is needed to remove the core material in the forging perforation and the excess flash on the outer edge of the forging. In the current production and processing, it is necessary to rely on manpower to load and unload the raw materials and transfer the materials, so the labor intensity is relatively large. In order to reduce the labor intensity, a robot is now introduced to load and unload the materials. However, in the process of removing the core material, after the punch removes the core material, when the punch rises, due to the influence of the temperature difference between the punch and the forging, the part of the forging in contact with the punch shrinks, thereby increasing the friction between the punch and the forging perforation, making it easy for the punch to drive the forging to move upward, and the robot cannot remove the forging from the punch. At the same time, when the outer flash is cut off, due to the contact between the trimming die and the forging, the temperature of the forging is high, and the part of the forging in contact with the trimming punch cools and shrinks, thereby increasing the friction between the forging and the trimming punch, which causes the forging to move upward together with the trimming die, thereby affecting the next outer flash removal. Summary of the invention

[0003] In view of the deficiencies of the prior art, the present invention provides a track shoe trimming and punching composite tooling and a method of using the same, which can facilitate the separation of the punch from the forging, the trimming die from the forging, and thus facilitate the production of the next forging.

[0004] The present invention is achieved through the following technical scheme: a track plate trimming and punching composite tooling, including an upper pad that moves in the height direction and is located above the lower pad, a trimming punch that is located on the lower pad and supports the forging, a trimming die that cooperates with the trimming punch to cut off the outer flash of the forging, and a punch that punches the forging and is connected to the upper pad, the trimming die is connected to a plurality of first guide columns that extend upward and are connected to the upper pad, the first guide column is also penetrated by a top plate that extends from the bottom surface to the top surface of the forging, and the first guide column is also sleeved with a spring that connects the top plate and the upper pad.

[0005] When the present invention is in use, the forging is placed on the trimming punch, at which time the trimming die supports the ejector plate, and then the upper pad is driven to move downward, and the upper pad drives the trimming punch and the punch to move downward, and at a certain moment, the punch hits the forging, the cutting hole hits the outer flash, the ejector plate hits the forging, and then the upper pad is driven to move downward, at which time the punch punches out the core material, the trimming die cuts off the outer flash, and the ejector plate cannot continue to move downward due to the restriction of the forging, the distance between the ejector plate and the upper pad is reduced, thereby compressing the spring; when the upper pad moves upward, the forging will move upward with the punch and the trimming die, and at this time the ejector plate is acted upon by the spring elastic force and is always pressed against the forging, restricting the forging from moving upward, so as the upper pad continues to move upward, the punch and the trimming die will be separated from the forging,

[0006] As an optimization, the top material plate is also provided with a positioning pull plate located above the trimming die and extending longitudinally, and two pulling arms arranged longitudinally are provided on both sides of the positioning pull plate, and the pulling arms are connected with limiting arms that are pushed to the top of the positioning pull plate, and the pulling arms are hinged to the lower pad through a first hinge axis extending laterally, and the trimming die is connected with guide plates located on both sides of the limiting arms and arranged laterally, and the upper axis of the pulling arms is connected to guide wheels that are located below the first hinge axis and cooperate with the guide plates to drive the crank arm to rotate.

[0007] When this optimization scheme is used, due to the limited elastic force of the spring, when the friction between the forging and the punch, and between the forging and the trimming die is large, when the punch and the trimming die continue to move upward, the forging will move upward against the ejector plate, continuing to compress the spring, so the elastic force of the spring alone cannot limit the upward movement of the forging;

[0008] Therefore, when the present invention is in use, when the trimming die moves downward, the trimming die drives the guide plate to move downward, and the guide wheel moves in the direction away from the forging under the guidance of the guide plate, so that the guide wheel drives the top of the pull arm to rotate upward, so that the limit arm rotates to above the positioning pull plate and presses against the ejector plate. At this time, the ejector plate just presses against the forging, and when the upper pad moves upward, the forging will move upward with the punch and the trimming die, and at this time, the ejector plate is affected by the spring force and the positioning pull plate, and keeps pressing against the forging to limit the forging from moving upward. Therefore, as the upper pad continues to move upward, the punch and the trimming die will be separated from the forging;

[0009] Continue to drive the upper pad to move upward, the trimming die and the guide plate to move upward, and the guide wheel moves toward the forging under the guidance of the guide plate, which makes the guide wheel drive the top of the pull arm to rotate downward, so that the limit arm rotates to the side of the positioning pull plate, thereby releasing the restraint on the positioning pull plate.

[0010] Preferably, the side surface of the guide plate close to the limiting arm is provided with a first groove extending along the extension direction of the pulling arm, and an inclined groove located below the first groove and inclined downwardly and inwardly, the upper part of the inclined groove is connected to the first groove, and the lower part of the inclined groove extends to the bottom surface of the guide plate, and the guide wheel is rollingly connected in the first groove and the inclined groove.

[0011] When the preferred solution is in use, the guide wheel enters from the inclined slot and enters into the first groove along the inclined surface of the inclined slot. Since the inclined slot is inclined downwardly and inwardly, after the guide wheel is inserted into the inclined slot from below, it will follow the inclined slot to move upwardly and outwardly, thereby driving the pulling arm to rotate around the first hinge axis, so that the top of the pulling arm rotates upward, so that the limit arm can be pushed onto the lifting plate; and when the guide plate continues to move downward, the guide wheel moves upwardly in the first groove, so that the guide plate does not interfere with the upward movement of the guide wheel;

[0012] On the contrary, when the guide wheel enters the inclined groove from the first groove, the guide wheel moves inward along the inclined surface of the inclined groove, that is, the guide wheel moves toward the direction close to the forging, so the top of the pulling arm rotates to the side of the ejector plate.

[0013] Preferably, the lower pad is provided with a support seat extending upward and inserted into the pulling arm, the first hinge shaft is fixedly connected to the support seat, and the support seat is also provided with a guide rod located below the first hinge shaft and inserted into the pulling arm, the guide rod is located between the guide wheel and the first hinge shaft, and the pulling arm is provided with an arc-shaped long hole for the guide rod to be inserted, and the center of the arc-shaped long hole is located above the arc-shaped long hole.

[0014] This preferred solution supports the first hinge shaft and the pull arm through the setting of the support seat, and provides a guiding effect on the rotation of the pull arm through the setting of the guide rod and the arc-shaped long hole, so that the rotation of the pull arm is more precise.

[0015] Preferably, two positioning pull plates are provided, and the two positioning pull plates are arranged in the transverse direction.

[0016] This preferred solution ensures that the force exerted by the positioning pull plate on the ejecting plate is more uniform by providing two positioning plates.

[0017] Preferably, the side shape of the trimming punch is adapted to the side shape of the track shoe, and the trimming punch is provided with a first blanking hole located directly below the punch, and the trimming die is provided with a cutting hole, the hole shape of the cutting hole is adapted to the side shape of the track shoe, the ejecting plate passes through the cutting hole and is pushed onto the forging, and the punch passes through the ejecting plate and is pushed onto the forging.

[0018] This preferred solution facilitates punching out the core material and cutting off the outer flash by arranging the punch and the cutting hole.

[0019] Preferably, a push plate is provided above the lower pad, the trimming punch penetrates the push plate and extends to the top of the push plate, and a driving device for pushing the stripping plate to move upward is also provided on the lower pad.

[0020] When this preferred solution is in use, after the outer flash is cut off, it will fall onto the push plate. After the forging is removed, the driving device pushes the push plate upward, thereby pushing the outer flash to the top of the trimming punch, making it easier to remove the outer flash.

[0021] Preferably, the top material plate is further provided with a frame connected to the top material plate and arranged in a rectangular shape, the top surface of the frame is connected to the upper pad, and the first guide column is located in the frame.

[0022] This preferred solution enhances the connection strength between the top plate and the upper pad by setting up the frame, while also protecting the first guide column and the spring.

[0023] Preferably, the trimming recess comprises an outer frame which is circumferentially closed and connected to the first guide column, and an inner frame which is located within the outer frame and is provided with the cutting hole, the inner frame comprising a first splicing plate, a second splicing plate, a third splicing plate, and a fourth splicing plate which are connected in sequence end to end, an extrusion plug is provided between the first splicing plate and the second splicing plate, and between the third splicing plate and the fourth splicing plate, the side of the extrusion plug which contacts the splicing plate is an inclined surface, and the distance between the top ends of the two inclined surfaces is smaller than the distance between the bottom ends of the two inclined surfaces.

[0024] In this preferred solution, the first splicing plate, the second splicing plate, the third splicing plate and the fourth splicing plate are squeezed and fixed in the outer frame by means of an extrusion plug, thereby facilitating the disassembly and replacement of the splicing plates.

[0025] A method for using a track shoe trimming and punching composite tooling comprises the following steps:

[0026] The forging is placed on the trimming punch. At this time, the trimming die supports the ejector plate, and then drives the upper pad to move downward. The upper pad drives the trimming punch and the punch to move downward. At a certain moment, the punch hits the forging, the cutting hole hits the outer flash, and the ejector plate hits the forging. Then the upper pad is driven downward. At this time, the punch punches out the core material, and the trimming die cuts off the outer flash. The ejector plate cannot continue to move downward due to the restriction of the forging. The distance between the ejector plate and the upper pad is reduced, thereby compressing the spring.

[0027] At the same time, when the trimming die moves downward, the trimming die drives the guide plate to move downward, and the guide wheel enters from the inclined groove and enters the first groove along the inclined surface of the inclined groove. When the guide wheel rolls along the inclined groove, the guide wheel drives the pull arm to rotate upward, so that the limit arm rotates to the top of the positioning pull plate and pushes against the ejector plate. At this time, the ejector plate just pushes against the forging. When the trimming die continues to move downward, the guide wheel moves in the first groove.

[0028] When the upper pad moves upward, the forging will move upward with the punch and the trimming die. At this time, the ejector plate is constantly pressed against the forging by the spring force and the positioning pull plate, restricting the forging from moving upward. Therefore, as the upper pad continues to move upward, the punch and the trimming die will separate from the forging.

[0029] The upper pad is continuously driven to move upward, the trimming die and the guide plate are moved upward, and the guide wheel enters the inclined groove from the first groove. Under the guidance of the inclined groove, the pull arm rotates in the direction away from the positioning pull plate, so that the limit arm leaves the positioning pull plate, thereby releasing the restriction of the ejector plate, and at the same time, the trimming die drives the ejector plate to continue to move upward;

[0030] The staff takes the forging out of the trimming punch, and then drives the driving device to move the push plate upward, and the push plate pushes the outer flash upward, making it convenient for the staff to take out the outer flash.

[0031] The beneficial effects of the present invention are as follows: through the arrangement of the ejector plate, the first guide column and the spring, it is possible to facilitate the separation of the punch from the forging, and the trimming die from the forging, thereby facilitating the production of the next forging; through the arrangement of the guide plate, the guide wheel, the pulling arm and the limiting arm, when the trimming die moves downward, the pulling arm rotates driven by the guide plate and the guide wheel, so that the limiting arm is pushed against the ejector plate to limit the movement of the ejector plate, thereby avoiding the situation where the upward movement of the forging cannot be limited due to insufficient spring elastic force; through the arrangement of the frame, the connection strength between the ejector plate and the upper pad is enhanced, while at the same time protecting the first guide column and the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0033] Figure 2 It is a left side schematic diagram of the structure of the present invention;

[0034] Figure 3 It is a three-dimensional schematic diagram of the structure of the present invention;

[0035] Figure 4 for Figure 1 Schematic diagram of the cross section at AA;

[0036] Figure 5 for Figure 1 Schematic diagram of the cross section at BB;

[0037] Figure 6 This is a schematic diagram of the main view of the present invention after removing the frame;

[0038] Figure 7 It is a schematic diagram of the explosion of the structure of the present invention;

[0039] Figure 8 The three views of the punch;

[0040] Fig. 9 The three views of the top plate;

[0041] Fig.10 The three views of the trimming die;

[0042] Fig.11 It is the three views of forging;

[0043] Fig.12 The three views of the trimming punch;

[0044] Fig.13 Three views of the pulling arm and guide plate;

[0045] Fig.14 for Fig.13 Schematic diagram of the cross section at CC;

[0046] Fig.15 This is a schematic diagram of the main view of the pulling arm;

[0047] Fig.16 is a three-dimensional schematic diagram of a guide plate;

[0048] Fig.17 It is a three-dimensional schematic diagram of the extrusion plug;

[0049] As shown in the figure:

[0050] 1. Upper pad, 2. Lower pad, 3. Punch, 4. Ejector plate, 5. Trimming die, 6. Forging, 7. Trimming punch, 8. Frame, 9. Pull arm, 10. Limit arm, 11. Positioning pull plate, 12. Driving device, 13. First guide column, 14. Spring, 15. Guide plate, 16. Support seat, 17. First hinge shaft, 18. Guide wheel, 19. Guide rod, 20. Arc long hole, 21. Inclined groove, 22. Pusher plate, 31. First splicing plate, 32. Second splicing plate, 33. Third splicing plate, 34. Fourth splicing plate, 35. Outer frame, 36. Extrusion plug. DETAILED DESCRIPTION

[0051] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0052] See attached Figure 1-17The present invention discloses a track plate trimming and punching composite tooling and a method for using the tooling, wherein the tooling comprises an upper pad 1 which moves in the height direction and is located above a lower pad 2, a trimming punch 7 which is located on the lower pad 2 and supports the forging, a trimming die 5 which cooperates with the trimming punch 7 to cut off the outer flash of the forging, and a punch 3 which punches the forging and is connected to the upper pad 1, wherein the trimming die 5 is connected to a plurality of first guide posts 13 which extend upward and are connected to the upper pad 1, wherein the first guide posts 13 are also provided with a top plate 4 which extends from the bottom surface to the top surface of the forging, and the first guide posts 13 are also provided with a spring 14 which connects the top plate 4 and the upper pad 1.

[0053] A second guide sleeve extending upward is provided on the lower pad 2 , a second guide post extending upward is slidably connected in the second guide sleeve, and the top surface of the second guide post is connected to the upper pad 1 .

[0054] The ejector plate 4 is also provided with a positioning pull plate 11 which is located above the trimming die 5 and extends longitudinally. Two pulling arms 9 arranged longitudinally are provided on both sides of the positioning pull plate 11. The pulling arms 9 are connected with limiting arms 10 which are pushed to the top of the positioning pull plate 11. The pulling arms 9 are hinged to the lower pad 2 through a first hinge shaft 17 extending laterally. The trimming die 5 is connected with guide plates 15 which are located on both sides of the limiting arms 10 and arranged laterally. The pulling arms 9 are axially connected with guide wheels 18 which are located below the first hinge shaft 17 and cooperate with the guide plates 15 to drive the pulling arms to rotate.

[0055] The guide plate 15 has a first groove extending in the extension direction of the pulling arm 9 and an inclined groove 21 located below the first groove and inclined downward and inward. The upper part of the inclined groove 21 is connected to the first groove, and the lower part of the inclined groove 21 extends to the bottom surface of the guide plate 15. The guide wheel 18 is rollingly connected in the first groove and the inclined groove 21.

[0056] The lower pad 2 is provided with a support seat 16 extending upward and inserted into the pulling arm 9, the first hinge shaft 17 is fixedly connected to the support seat 16, and the support seat 16 is also provided with a guide rod 19 located below the first hinge shaft 17 and inserted into the pulling arm 9, the guide rod 19 is located between the guide wheel 18 and the first hinge shaft 17, and the pulling arm 9 is provided with an arc-shaped long hole 20 for the guide rod 19 to be inserted, and the center of the arc-shaped long hole 20 is located above the arc-shaped long hole 20.

[0057] There are two positioning pull plates 11 , which are arranged in the transverse direction, and the forging extends in the transverse direction.

[0058] A tension spring is also provided on the lower pad 2 corresponding to the tension arm 9 , the bottom end of the tension spring is connected to the lower pad 2 , the top end of the tension spring is connected to the tension arm 9 , and the connection point between the top end of the tension spring and the tension arm 9 is located above the first hinge shaft 17 .

[0059] The side shape of the trimming punch 7 is adapted to the side shape of the track shoe, and the trimming punch 7 is provided with a first blanking hole located directly below the punch 3, and the trimming die 5 is provided with a cutting hole, the hole shape of the cutting hole is adapted to the side shape of the track shoe, the ejector plate 4 penetrates the cutting hole and pushes onto the forging, and the punch 3 penetrates the ejector plate 4 and pushes onto the forging.

[0060] A push plate 22 is also provided above the lower pad 2. The trimming punch 7 passes through the push plate 22 and extends to the top of the push plate 22. A driving device 12 for pushing the stripping plate upward is also provided on the lower pad 2. The driving device 12 includes four cylinders arranged in a rectangular shape. The bottom end of the cylinder is connected to the lower pad 2, and the protruding end of the cylinder is connected to the bottom surface of the push plate 22.

[0061] The ejector plate 4 is also provided with a frame 8 arranged in a rectangular shape, the top surface of the frame 8 is connected to the upper pad 1 , and the first guide column 13 is located inside the frame 8 .

[0062] The trimming recess includes an outer frame 35 which is circumferentially closed and connected to the first guide column 13, and an inner frame which is located within the outer frame 35 and is provided with the cutting hole. The inner frame includes a first splicing plate 31, a second splicing plate 32, a third splicing plate 33, and a fourth splicing plate 34 which are connected in sequence end to end. An extrusion plug 36 is provided between the first splicing plate 31 and the second splicing plate 32, and between the third splicing plate 33 and the fourth splicing plate 34. The side of the extrusion plug 36 which contacts the splicing plate is an inclined surface, and the distance between the top ends of the two inclined surfaces is less than the distance between the bottom ends of the two inclined surfaces.

[0063] In particular, see the attached Figure 1 , horizontal direction is the horizontal direction, vertical direction is the height direction, and the direction perpendicular to the horizontal and vertical directions is the longitudinal direction.

[0064] A method for using a track shoe trimming and punching composite tooling comprises the following steps:

[0065] The forging is placed on the trimming punch 7. At this time, the trimming die 5 supports the ejector plate 4, and then the upper pad 1 is driven to move downward. The upper pad 1 drives the trimming punch 7 and the punch 3 to move downward. At a certain moment, the punch 3 pushes against the forging, the cutting hole pushes against the outer flash, and the ejector plate 4 pushes against the forging. Then the upper pad 1 is driven downward continuously. At this time, the punch 3 punches out the core material, and the trimming die 5 cuts off the outer flash. The ejector plate 4 cannot continue to move downward due to the restriction of the forging. The distance between the ejector plate 4 and the upper pad 1 is reduced, thereby compressing the spring 14.

[0066] At the same time, when the trimming die 5 moves downward, the trimming die 5 drives the guide plate 15 to move downward, and the guide wheel 18 enters from the inclined groove 21 and enters the first groove along the inclined surface of the inclined groove 21. When the guide wheel 18 rolls along the inclined groove 21, the guide wheel 18 drives the pull arm 9 to rotate upward, so that the limit arm 10 rotates to the top of the positioning pull plate 11 and pushes onto the ejection plate 4. At this time, the ejection plate 4 just pushes onto the forging. When the trimming die 5 continues to move downward, the guide wheel 18 moves in the first groove.

[0067] When the upper pad 1 moves upward, the forging will move upward along with the punch 3 and the trimming die 5. At this time, the ejector plate 4 is constantly pressed against the forging by the elastic force of the spring 14 and the positioning pull plate 11, restricting the forging from moving upward. Therefore, as the upper pad 1 continues to move upward, the punch 3 and the trimming die 5 will separate from the forging.

[0068] The upper pad 1 is driven to move upward, the trimming die 5 and the guide plate 15 are driven upward, and the guide wheel 18 enters the inclined groove 21 from the first groove. Under the guidance of the inclined groove 21, the pull arm 9 rotates away from the positioning pull plate 11, so that the limit arm 10 leaves the positioning pull plate 11, thereby releasing the restriction of the ejector plate 4, and at the same time, the trimming die 5 drives the ejector plate 4 to continue to move upward;

[0069] The staff takes the forging out of the trimming punch 7, and then drives the driving device 12 to move the push plate 22 upward, and the push plate 22 pushes the outer flash upward, so that the staff can take out the outer flash. Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by using the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention, and should also belong to the scope of protection of the claims of the present invention.

Claims

1. A track shoe trimming and punching composite tool, characterized in that: It comprises an upper pad (1) which moves in the height direction and is located above the lower pad (2), a trimming punch (7) which is located on the lower pad (2) and supports the forging, a trimming die (5) which cooperates with the trimming punch (7) to cut off the outer flash of the forging, and a punch (3) which punches holes in the forging and is connected to the upper pad (1), the trimming die (5) being connected to a plurality of first guide posts (13) which extend upward and are connected to the upper pad (1), the first guide posts (13) being further provided with a top plate (4) whose bottom surface is pressed against the top surface of the forging, and the first guide posts (13) being further provided with a spring (14) which connects the top plate (4) and the upper pad (1); The ejector plate (4) is also provided with a positioning pull plate (11) located above the trimming die (5) and extending in the longitudinal direction. Two pulling arms (9) arranged in the longitudinal direction are provided on both sides of the positioning pull plate (11). The pulling arms (9) are connected with a limiting arm (10) which is pushed to the top of the positioning pull plate (11). The pulling arms (9) are hinged to the lower pad (2) via a first hinge shaft (17) extending in the transverse direction. The trimming die (5) is connected with guide plates (15) located on both sides of the limiting arm (10) and arranged in the transverse direction. The pulling arms (9) are axially connected with a guide wheel (18) located below the first hinge shaft (17) and cooperating with the guide plate (15) to drive the crank arm to rotate. The side surface of the guide plate (15) close to the limiting arm (10) is provided with a first groove extending in the extension direction of the pulling arm (9), and an inclined groove (21) located below the first groove and inclined downwardly and inwardly, the upper part of the inclined groove (21) is connected to the first groove, and the lower part of the inclined groove (21) extends to the bottom surface of the guide plate (15), and the guide wheel (18) is rollingly connected in the first groove and the inclined groove (21); The lower pad (2) is provided with a support seat (16) extending upward and inserted into the pulling arm (9), the first hinge shaft (17) is fixedly connected to the support seat (16), the support seat (16) is also provided with a guide rod (19) located below the first hinge shaft (17) and inserted into the pulling arm (9), the guide rod (19) is located between the guide wheel (18) and the first hinge shaft (17), the pulling arm (9) is provided with an arc-shaped long hole (20) for the guide rod (19) to be inserted, and the center of the arc-shaped long hole (20) is located above the arc-shaped long hole (20); Two positioning pull plates (11) are provided, and the two positioning pull plates (11) are arranged in a transverse direction.

2. The track shoe trimming and punching composite tooling according to claim 1, characterized in that: The side shape of the trimming punch (7) is adapted to the side shape of the track shoe, and the trimming punch (7) is provided with a first blanking hole located directly below the punch (3), the trimming die (5) is provided with a cutting hole, the hole shape of the cutting hole is adapted to the side shape of the track shoe, the ejector plate (4) passes through the cutting hole and is pushed onto the forging, and the punch (3) passes through the ejector plate (4) and is pushed onto the forging.

3. The track shoe trimming and punching composite tooling according to claim 2 is characterized in that: A push plate (22) is also provided above the lower pad (2), the trimming punch (7) penetrates the push plate (22) and extends to above the push plate (22), and a driving device (12) for pushing the stripping plate to move upward is also provided on the lower pad (2).

4. The track shoe trimming and punching composite tooling according to claim 3, characterized in that: The ejector plate (4) is also provided with a frame (8) connected thereto and arranged in a rectangular shape, the top surface of the frame (8) being connected to the upper pad (1), and the first guide column (13) being located inside the frame (8).

5. The track shoe trimming and punching composite tooling according to claim 4, characterized in that: The trimming recess comprises an outer frame (35) which is circumferentially closed and connected to the first guide column (13), and an inner frame which is located inside the outer frame (35) and is provided with the cutting hole. The inner frame comprises a first splicing plate (31), a second splicing plate (32), a third splicing plate (33), and a fourth splicing plate (34) which are connected in sequence end to end. An extrusion plug (36) is provided between the first splicing plate (31) and the second splicing plate (32), and between the third splicing plate (33) and the fourth splicing plate (34). The side surface of the extrusion plug (36) which contacts the splicing plate is an inclined surface, and the distance between the top ends of the two inclined surfaces is smaller than the distance between the bottom ends of the two inclined surfaces.

6. The method for using the track shoe trimming and punching composite tooling according to claim 5, characterized in that: The following steps are involved: The forging is placed on the trimming punch (7), at which time the trimming die (5) supports the ejector plate (4), and then the upper pad (1) is driven to move downward, and the upper pad (1) drives the trimming punch (7) and the punch (3) to move downward, and at a certain moment, the punch (3) is pushed onto the forging, the cutting hole is pushed onto the outer flash, and the ejector plate (4) is pushed onto the forging, and then the upper pad (1) is driven to move downward continuously, at which time the punch (3) punches out the core material, and the trimming die (5) cuts off the outer flash, while the ejector plate (4) cannot continue to move downward due to the restriction of the forging, and the distance between the ejector plate (4) and the upper pad (1) is reduced, thereby compressing the spring (14); At the same time, when the trimming die (5) moves downward, the trimming die (5) drives the guide plate (15) to move downward, and the guide wheel (18) enters from the inclined groove (21) and enters the first groove along the inclined surface of the inclined groove (21). When the guide wheel (18) rolls along the inclined groove (21), the guide wheel (18) drives the pull arm (9) to rotate upward, so that the limit arm (10) rotates to the top of the positioning pull plate (11) and pushes onto the ejector plate (4). At this time, the ejector plate (4) just pushes onto the forging. When the trimming die (5) continues to move downward, the guide wheel (18) moves in the first groove. When the upper pad (1) moves upward, the forging will move upward along with the punch (3) and the trimming die (5), and at this time, the ejector plate (4) is constantly pressed against the forging by the elastic force of the spring (14) and the positioning pull plate (11), thereby limiting the upward movement of the forging. Therefore, as the upper pad (1) continues to move upward, the punch (3) and the trimming die (5) will separate from the forging; The upper pad (1) is continuously driven to move upward, the trimming die (5) and the guide plate (15) are moved upward, and the guide wheel (18) enters the inclined groove (21) from the first groove. Under the guidance of the inclined groove (21), the pull arm (9) rotates in a direction away from the positioning pull plate (11), so that the limit arm (10) leaves the positioning pull plate (11), thereby releasing the restriction of the ejector plate (4), and at the same time, the trimming die (5) drives the ejector plate (4) to continue to move upward; The staff removes the forging from the trimming punch (7), and then drives the driving device (12) to drive the push plate (22) to move upward, and the push plate (22) pushes the outer flash upward, thereby facilitating the staff to remove the outer flash.

Images