Stamping equipment

Abstract

The utility model relates to the technical field of stamping dies, in particular to stamping equipment. The stamping equipment comprises an upper die assembly, a lower die assembly, a pushing assembly and a gear and rack transmission assembly, the lower die assembly is located below the upper die assembly, the lower die assembly is used for bearing workpieces, the upper die assembly can ascend and descend relative to the lower die assembly, and the pushing assembly is arranged on the lower die assembly in a sliding mode. The pushing assembly is used for pushing workpieces on the lower die assembly to a to-be-machined station, the gear and rack transmission assembly is in transmission connection with the pushing assembly, and the upper die assembly can drive the gear and rack transmission assembly to move so that the gear and rack transmission assembly can drive the pushing assembly to slide relative to the lower die assembly. According to the stamping equipment, the gear and rack transmission assembly drives the material pushing assembly to slide relative to the lower die assembly, then the material pushing assembly pushes the workpiece, lateral thrust applied to the material pushing assembly is reduced, the workpiece pushing precision of the material pushing assembly is guaranteed, and the requirement of the material pushing assembly for the large stroke of workpiece pushing is met.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a stamping device. Background Art

[0002] When the existing stamping equipment performs stamping processing on the workpiece, it is usually necessary for the pusher assembly to push the workpiece placed on the lower die assembly to the processing station to facilitate the stamping work on the workpiece.

[0003] In the related art, the pusher assembly is usually designed in the form of a slider, the slider is slidably arranged on the lower die assembly, and a plunger is fixedly installed on the upper die assembly, and the corresponding abutment parts of the plunger and the slider are provided with inclined surfaces. When the upper die assembly moves downward relative to the lower die assembly, the inclined surface of the plunger abuts against the inclined surface of the slider, thereby pushing the slider to slide in the horizontal direction. When the upper die assembly moves upward relative to the lower die assembly to reset, the slider slides and resets relative to the lower die assembly in the horizontal direction, and the slider pushes the workpiece to the processing station during the sliding reset process. However, the push of the slider is achieved by the abutment of the inclined surface of the plunger and the inclined surface of the slider, which greatly reduces the sliding stroke of the slider. When the stroke of the upper die assembly relative to the lower die assembly is small, the slider cannot meet the demand for pushing the workpiece for a large stroke, which greatly reduces the scope of application of the stamping equipment. In addition, the push of the slider is achieved by the abutment of the inclined surface of the plunger and the inclined surface of the slider, and the plunger will generate a large lateral thrust on the slider, which cannot drive the slider to slide accurately, greatly reducing the accuracy of pushing the workpiece.

[0004] Therefore, a stamping device is urgently needed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a stamping device to reduce the lateral thrust applied to the pusher assembly, ensure the accuracy of the pusher assembly in pushing the workpiece, meet the demand for a large push stroke of the pusher assembly on the workpiece, and improve the application scope of the stamping device.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A stamping device, comprising:

[0008] Upper mold assembly;

[0009] A lower mold assembly is located below the upper mold assembly, the lower mold assembly is used to carry the workpiece, and the upper mold assembly can be lifted and moved relative to the lower mold assembly;

[0010] A pusher assembly, the pusher assembly is slidably disposed on the lower die assembly, and the pusher assembly is configured to push the workpiece on the lower die assembly to a station to be processed; and

[0011] The rack and pinion transmission assembly is in transmission connection with the pusher assembly, and the upper mold assembly can drive the rack and pinion transmission assembly to move, so that the rack and pinion transmission assembly drives the pusher assembly to slide relative to the lower mold assembly.

[0012] As an optional solution, the rack and pinion transmission assembly includes:

[0013] A first transmission rack, wherein the first transmission rack is slidably disposed on the lower mold assembly along a vertical direction, and the upper mold assembly can press the first transmission rack to slide downward relative to the lower mold assembly;

[0014] a gear set, the gear set being rotatably disposed on the lower mold assembly, the gear set being meshed with the first transmission rack; and

[0015] The second transmission rack is slidably arranged on the lower mold assembly along a horizontal direction, the second transmission rack is meshed with the gear set, and the second transmission rack is connected to the pusher assembly.

[0016] As an optional solution, the gear set includes:

[0017] a first gear rotatably disposed on the lower mold assembly, the first gear meshing with the first transmission rack; and

[0018] The second gear is coaxially fixedly connected with the first gear, the second gear is meshed with the second transmission rack, and the outer diameter of the second gear is greater than the outer diameter of the first gear.

[0019] As an optional solution, both the first gear and the second gear are cylindrical gears.

[0020] As an optional solution, the stamping equipment further includes:

[0021] A reset assembly is connected between the first transmission rack and the lower mold assembly, and is configured to drive the first transmission rack to slide upward and reset.

[0022] As an optional solution, the reset component includes:

[0023] A reset elastic member is connected between the first transmission rack and the lower mold assembly.

[0024] As an optional solution, the stamping equipment further includes:

[0025] A limit assembly is provided on the lower mold assembly, and the limit assembly can abut against the first transmission rack to limit the upper sliding reset limit position of the first transmission rack.

[0026] As an optional solution, the upper mold assembly includes:

[0027] an upper mold body; and

[0028] An abutment member, wherein the abutment member can abut against the top of the first transmission rack, the abutment member is installed on the upper mold body, and the installation position of the abutment member relative to the upper mold body is adjustable along the vertical direction.

[0029] As an optional solution, the abutment member includes:

[0030] An abutment bolt, wherein the abutment bolt can abut against the top of the first transmission rack, the abutment bolt is threadedly connected to the upper mold body, and the screwing depth of the abutment bolt in the upper mold body is adjustable.

[0031] As an optional solution, the stamping equipment further includes:

[0032] A guide assembly is disposed on the lower die assembly and is configured to guide the push assembly to slide relative to the lower die assembly.

[0033] Beneficial effects of the utility model:

[0034] The utility model provides a stamping device, which includes an upper die assembly, a lower die assembly, a pusher assembly and a gear rack transmission assembly, wherein the lower die assembly is located below the upper die assembly, the lower die assembly is used to carry the workpiece, and the upper die assembly can be lifted and moved relative to the lower die assembly, the pusher assembly is slidably arranged on the lower die assembly, the pusher assembly is used to push the workpiece on the lower die assembly to a waiting processing station, the gear rack transmission assembly is transmission-connected with the pusher assembly, and the upper die assembly can drive the gear rack transmission assembly to move, so that the gear rack transmission assembly drives the pusher assembly to slide relative to the lower die assembly. The stamping device drives the pusher assembly to slide relative to the lower die assembly through the gear rack transmission assembly, thereby enabling the pusher assembly to complete the pushing of the workpiece, reducing the lateral thrust applied to the pusher assembly, ensuring the precision of the pusher assembly pushing the workpiece, and also meeting the requirement of the pusher assembly pushing the workpiece with a large stroke, thereby improving the application scope of the stamping device. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the structure of the stamping equipment provided by the embodiment of the utility model Figure 1 ;

[0036] Figure 2This is a schematic diagram of the structure of the stamping equipment provided by the embodiment of the utility model Figure 2 .

[0037] In the figure:

[0038] 1. Upper mold assembly; 11. Upper mold body; 12. Abutment; 2. Lower mold assembly; 21. Lower mold body; 22. First mounting plate; 23. Second mounting plate; 24. Third mounting plate; 3. Pusher assembly; 4. Rack and pinion transmission assembly; 41. First transmission rack; 42. Gear set; 421. First gear; 422. Second gear; 43. Second transmission rack; 5. Reset assembly. DETAILED DESCRIPTION

[0039] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the present invention are further explained below with reference to the accompanying drawings and through specific implementation methods.

[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0043] In the prior art, the feeding assembly on the stamping equipment is usually designed in the form of a slider, the slider is slidably arranged on the lower die assembly, and a plunger is fixedly installed on the upper die assembly, and the corresponding abutment parts of the plunger and the slider are provided with inclined surfaces. When the upper die assembly moves downward relative to the lower die assembly, the inclined surface of the plunger abuts against the inclined surface of the slider, thereby pushing the slider to slide in the horizontal direction. When the upper die assembly moves upward relative to the lower die assembly to reset, the slider slides and resets relative to the lower die assembly in the horizontal direction, and the slider pushes the workpiece to the processing station during the sliding reset process. However, the push of the slider is achieved by the abutment of the inclined surface of the plunger and the inclined surface of the slider, which greatly reduces the sliding stroke of the slider. When the stroke of the upper die assembly relative to the lower die assembly is small, the slider cannot meet the demand for pushing the workpiece for a large stroke, which greatly reduces the scope of application of the stamping equipment. In addition, the push of the slider is achieved by the abutment of the inclined surface of the plunger and the inclined surface of the slider, and the plunger will generate a large lateral thrust on the slider, which cannot drive the slider to slide accurately, greatly reducing the accuracy of pushing the workpiece.

[0044] In order to solve the above problems, Figure 1 and Figure 2 As shown, the present embodiment provides a stamping device, which includes an upper die assembly 1, a lower die assembly 2, a pusher assembly 3 and a gear rack transmission assembly 4, wherein the lower die assembly 2 is located below the upper die assembly 1, the lower die assembly 2 is used to carry the workpiece, and the upper die assembly 1 can be lifted and lowered relative to the lower die assembly 2, the pusher assembly 3 is slidably arranged on the lower die assembly 2, the pusher assembly 3 is used to push the workpiece on the lower die assembly 2 to the processing station, the gear rack transmission assembly 4 is in transmission connection with the pusher assembly 3, the upper die assembly 1 can drive the gear rack transmission assembly 4 to move, so that the gear rack transmission assembly 4 drives the pusher assembly 3 to slide relative to the lower die assembly 2. The stamping device provided in the present embodiment drives the pusher assembly 3 to slide relative to the lower die assembly 2 through the gear rack transmission assembly 4, so that the pusher assembly 3 completes the pushing of the workpiece, reduces the lateral thrust applied to the pusher assembly 3, ensures the accuracy of the pusher assembly 3 pushing the workpiece, and also meets the requirement of the pusher assembly 3 pushing the workpiece for a large stroke, thereby improving the scope of application of the stamping device.

[0045] Optionally, in this embodiment, if Figure 1 As shown, when the upper mold assembly 1 descends relative to the lower mold assembly 2, the upper mold assembly 1 presses the rack and pinion transmission assembly 4 downward, so that the rack and pinion transmission assembly 4 drives the pusher assembly 3 to slide toward the right; Figure 2 As shown, when the upper mold assembly 1 rises relative to the lower mold assembly 2, the rack and pinion transmission assembly 4 is no longer subjected to the pressure of the upper mold assembly 1, so that the rack and pinion transmission assembly 4 drives the pusher assembly 3 to slide toward the left, thereby causing the pusher assembly 3 to push the workpiece to the processing station.

[0046] It should be noted that in this embodiment, the upper mold assembly 1 can be driven to rise and fall relative to the lower mold assembly 2 by a motor drive assembly, or the upper mold assembly 1 can be driven to rise and fall relative to the lower mold assembly 2 by a driving cylinder. This embodiment does not limit the specific form of driving the upper mold assembly 1 to rise and fall relative to the lower mold assembly 2.

[0047] Optionally, in this embodiment, the pusher assembly 3 may be a pusher block, which is slidably disposed on the lower die assembly 2 and is transmission-connected to the rack and pinion transmission assembly 4. The pusher block has the advantages of simple structure and easy installation.

[0048] Optionally, in this embodiment, if Figure 1 and Figure 2 As shown, the rack and pinion transmission assembly 4 includes a first transmission rack 41, a gear set 42 and a second transmission rack 43, wherein the first transmission rack 41 is slidably arranged on the lower mold assembly 2 along the vertical direction (up and down direction in the figure), and the upper mold assembly 1 can press the first transmission rack 41 to slide downward relative to the lower mold assembly 2, the gear set 42 is rotatably arranged on the lower mold assembly 2, the gear set 42 is meshed with the first transmission rack 41, the second transmission rack 43 is slidably arranged on the lower mold assembly 2 along the horizontal direction (left and right direction in the figure), the second transmission rack 43 is meshed with the gear set 42, and the second transmission rack 43 is connected to the push assembly 3. When the upper mold assembly 1 descends relative to the lower mold assembly 2, the upper mold assembly 1 presses the first transmission rack 41 downward, so that the first transmission rack 41 slides downward relative to the lower mold assembly 2. During the downward sliding of the first transmission rack 41, it drives the gear set 42 to rotate in the clockwise direction. During the clockwise rotation of the gear set 42, it drives the second transmission rack 43 to slide toward the right, thereby synchronously driving the push assembly 3 to slide toward the right; when the upper mold assembly 1 rises relative to the lower mold assembly 2, the first transmission rack 41 is no longer subjected to the pressure of the upper mold assembly 1, and the first transmission rack 41 slides upward and resets relative to the lower mold assembly 2. During the upward sliding and resetting of the first transmission rack 41, it drives the gear set 42 to rotate in the counterclockwise direction. During the counterclockwise rotation of the gear set 42, it drives the second transmission rack 43 to slide toward the left, thereby synchronously driving the push assembly 3 to slide toward the left, thereby causing the push assembly 3 to push the workpiece to the processing station.

[0049] Optionally, in this embodiment, the gear set 42 includes a first gear 421 and a second gear 422, wherein the first gear 421 and the second gear 422 are both rotatably arranged on the lower mold assembly 2, the first gear 421 is meshed with the first transmission rack 41, the second gear 422 is coaxially fixedly connected with the first gear 421, the second gear 422 is meshed with the second transmission rack 43, and the outer diameter of the second gear 422 is greater than the outer diameter of the first gear 421. The above arrangement enables the first transmission rack 41 to synchronously drive the second gear 422 to rotate during the meshing transmission with the first gear 421, thereby enabling the second gear 422 to synchronously drive the second transmission rack 43 to slide. In addition, by making the outer diameter of the second gear 422 greater than the outer diameter of the first gear 421, the sliding stroke of the second transmission rack 43 in the left and right directions is greatly increased. Specifically, in this embodiment, the first gear 421 and the second gear 422 are both cylindrical gears, and cylindrical gears have the advantages of stable transmission ratio, reliable operation and high transmission efficiency.

[0050] It should be noted that, in this embodiment, the lower mold assembly 2 includes a lower mold body 21, a first mounting plate 22 and a second mounting plate 23, wherein the lower mold body 21 is used to carry the workpiece, the first mounting plate 22 and the second mounting plate 23 are both fixedly connected to the lower mold body 21, the first gear 421 and the second gear 422 are both rotatably mounted on the first mounting plate 22, and the second transmission rack 43 is slidably connected to the first mounting plate 22, and the first transmission rack 41 is slidably connected to the second mounting plate 23.

[0051] In this embodiment, if Figure 1 and Figure 2 As shown, the stamping equipment also includes a reset component 5, which is connected between the first transmission rack 41 and the lower die assembly 2, and the reset component 5 is used to drive the first transmission rack 41 to slide upward and reset. Specifically, the reset component 5 can be a reset elastic member, which is connected between the first transmission rack 41 and the lower die assembly 2. When the upper die assembly 1 descends relative to the lower die assembly 2, the upper die assembly 1 presses the first transmission rack 41 downward, so that the first transmission rack 41 slides downward relative to the lower die assembly 2, and the reset elastic member is in a compressed state. When the upper die assembly 1 rises relative to the lower die assembly 2, the first transmission rack 41 is no longer subjected to the pressure of the upper die assembly 1. At this time, the first transmission rack 41 drives the first transmission rack 41 to slide upward relative to the lower die assembly 2 under the action of the elastic restoring force of the reset elastic member. By designing the reset component 5 in the form of a reset elastic member, the structure is simple and the operation is more reliable. Optionally, the reset elastic member can be a spring, which has the advantage of good elastic effect.

[0052] Optionally, in this embodiment, the lower mold assembly 2 also includes a third mounting plate 24 fixedly connected to the second mounting plate 23, the reset elastic member is located in the space surrounded by the first transmission rack 41, the second mounting plate 23 and the third mounting plate 24, and the upper end of the reset elastic member is abutted against the first transmission rack 41, and the lower end of the reset elastic member is abutted against the second mounting plate 23, thereby realizing the positioning installation of the reset elastic member.

[0053] Optionally, in this embodiment, the stamping device further includes a guide assembly, which is disposed on the lower die assembly 2, and is used to guide the pusher assembly 3 to slide relative to the lower die assembly 2, thereby ensuring the stability and reliability of the pusher assembly 3 sliding along the left-right direction. Specifically, in this embodiment, the guide assembly is a slide groove (not shown in the figure) disposed on the first mounting plate 22, the slide groove extends along the left-right direction, and the pusher assembly 3 is slidably disposed in the slide groove.

[0054] Optionally, in this embodiment, the stamping device further includes a limiting assembly (not shown in the figure), which is arranged on the lower die assembly 2, and can abut against the first transmission rack 41 to limit the limit position of the first transmission rack 41 sliding upward and resetting, thereby preventing the first transmission rack 41 from sliding upward excessively and resetting under the action of the resetting elastic member, thereby detaching from the second mounting plate 23. Optionally, the limiting assembly can be designed in the form of a limiting block, and the limiting block is installed on the third mounting plate 24, so that the limiting block can abut against the top of the first transmission rack 41. Optionally, the limiting assembly can also be designed in the form of a limiting step, and the limiting step is arranged in the slide groove of the second mounting plate 23, and the limiting step can abut against the protrusion at the lower end of the first transmission rack 41 in the slide groove in the up-down direction, and when the first transmission rack 41 is reset upward to the limit position along the slide groove, the protrusion at the lower end of the first transmission rack 41 just abuts against the lower end surface of the limiting step.

[0055] Alternatively, if Figure 1 and Figure 2As shown, the upper die assembly 1 provided in this embodiment includes an upper die body 11 and abutment 12, wherein the abutment 12 can abut against the top of the first transmission rack 41, the abutment 12 is installed on the upper die body 11, and the installation position of the abutment 12 relative to the upper die body 11 is adjustable in the vertical direction. By adjusting the installation position of the abutment 12 relative to the upper die body 11 in the vertical direction, the sliding stroke of the pusher assembly 3 driven by the second transmission rack 43 in the left and right directions is adjusted, thereby meeting the needs of the workpiece for different pushing strokes and improving the applicable scope of the stamping equipment. Specifically, when the lifting stroke of the upper die assembly 1 relative to the lower die assembly 2 remains unchanged, when the installation position of the abutment 12 relative to the upper die body 11 is adjusted downward, the sliding stroke of the pusher assembly 3 driven by the second transmission rack 43 in the left and right directions increases, and when the installation position of the abutment 12 relative to the upper die body 11 is adjusted upward, the sliding stroke of the pusher assembly 3 driven by the second transmission rack 43 in the left and right directions decreases.

[0056] Optionally, in this embodiment, the abutment member 12 is an abutment bolt, which can abut against the top of the first transmission rack 41, is threadedly connected to the upper mold body 11, and the screwing depth of the abutment bolt in the upper mold body 11 is adjustable, thereby adjusting the installation position of the abutment bolt relative to the upper mold body 11 in the vertical direction. By designing the abutment member 12 in the form of an abutment bolt, the structure is simple and the height position of the abutment member 12 can be easily adjusted.

[0057] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A stamping equipment, characterized in that: include: Upper mold assembly (1); A lower mold assembly (2) is located below the upper mold assembly (1), the lower mold assembly (2) is used to carry a workpiece, and the upper mold assembly (1) can be lifted and moved relative to the lower mold assembly (2); A pusher assembly (3), the pusher assembly (3) being slidably disposed on the lower die assembly (2), the pusher assembly (3) being configured to push the workpiece on the lower die assembly (2) to a station to be processed; as well as A rack and pinion transmission assembly (4), wherein the rack and pinion transmission assembly (4) is in transmission connection with the push assembly (3), and the upper mold assembly (1) can drive the rack and pinion transmission assembly (4) to move, so that the rack and pinion transmission assembly (4) drives the push assembly (3) to slide relative to the lower mold assembly (2).

2. The punching equipment according to claim 1, characterized in that: The rack and pinion transmission assembly (4) comprises: A first transmission rack (41), the first transmission rack (41) being slidably disposed on the lower mold assembly (2) along a vertical direction, and the upper mold assembly (1) is capable of pressing the first transmission rack (41) to slide downward relative to the lower mold assembly (2); a gear set (42), the gear set (42) being rotatably disposed on the lower mold assembly (2), the gear set (42) being meshed with the first transmission rack (41); and A second transmission rack (43), the second transmission rack (43) is slidably arranged on the lower mold assembly (2) along a horizontal direction, the second transmission rack (43) is meshed with the gear set (42), and the second transmission rack (43) is connected to the pusher assembly (3).

3. The stamping equipment according to claim 2, characterized in that The gear set (42) comprises: A first gear (421) is rotatably disposed on the lower mold assembly (2), the first gear (421) being meshed with the first transmission rack (41); and A second gear (422), the second gear (422) is coaxially fixedly connected to the first gear (421), the second gear (422) is meshed with the second transmission rack (43), and the outer diameter of the second gear (422) is greater than the outer diameter of the first gear (421).

4. The punching equipment according to claim 3, characterized in that: The first gear (421) and the second gear (422) are both cylindrical gears.

5. The punching equipment according to any one of claims 2 to 4, characterized in that: The stamping equipment also includes: A reset component (5), the reset component (5) is connected between the first transmission rack (41) and the lower mold component (2), and the reset component (5) is configured to drive the first transmission rack (41) to slide upwards and reset.

6. The punching equipment according to claim 5, characterized in that The reset component (5) comprises: A reset elastic member, wherein the reset elastic member is connected between the first transmission rack (41) and the lower mold assembly (2).

7. The punching equipment according to claim 5, characterized in that The stamping equipment also includes: A limit assembly is provided on the lower mold assembly (2), and the limit assembly can abut against the first transmission rack (41) to limit the first transmission rack (41) to an extreme position of sliding upward and resetting.

8. The punching equipment according to any one of claims 2 to 4, characterized in that: The upper mold assembly (1) comprises: an upper mold body (11); and An abutment member (12), the abutment member (12) being capable of abutting against the top of the first transmission rack (41), the abutment member (12) being mounted on the upper mold body (11), and the mounting position of the abutment member (12) relative to the upper mold body (11) being adjustable along the vertical direction.

9. The punching device according to claim 8, characterized in that The abutment member (12) comprises: An abutment bolt, wherein the abutment bolt can abut against the top of the first transmission rack (41), the abutment bolt is threadedly connected to the upper mold body (11), and the screwing depth of the abutment bolt in the upper mold body (11) is adjustable.

10. The punching equipment according to any one of claims 1 to 4, characterized in that: The stamping equipment also includes: A guide assembly is arranged on the lower die assembly (2), and the guide assembly is configured to guide the pusher assembly (3) to slide relative to the lower die assembly (2).

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