Punching die of automobile electric control connecting assembly

Abstract

The utility model relates to a punching die of an automobile electric control connecting assembly, which comprises a base plate and a frame body arranged on the base plate, a lower die is arranged on the frame body, an upper die matched with the lower die is vertically arranged on the frame body in a sliding mode, a driving mechanism is arranged on the frame body, the driving mechanism is connected with the upper die, and a correcting assembly is arranged on the frame body. A driving mechanism is arranged on the upper die, a correcting assembly is arranged on the upper die, the correcting assembly is connected with the driving mechanism, a discharging assembly connected with the driving mechanism is further arranged between the base plate and the frame body, and the discharging assembly can be matched with the driving mechanism so that workpieces which are located in the lower die and punched down can be pushed out. When the upper die and the lower die are separated under the action of the driving mechanism, the discharging assembly is matched with the driving mechanism, so that a punched workpiece located in the lower die is pushed out.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a punching die for an automotive electronic control connection component. Background Art

[0002] Automotive electronic control connection terminals refer to electrical connectors used to connect components such as new energy vehicle batteries and electric motors. Automotive electronic control connection terminals play a crucial role in new energy vehicles. They are not only the interfaces of electrical equipment but also responsible for transmitting current or signals to achieve the connection and communication between different components. These terminals connect components such as battery packs, electric motors, controllers, and charging piles to ensure normal electrical communication and energy transfer between various components.

[0003] The production process of automotive electronic control connection terminals generally includes stamping, electroplating process, comparison, assembly, etc. Among them, the production process of connection terminals generally starts from stamping. Through large and medium-sized high-speed stamping machines, connection terminals (metal products such as pin inserts) are stamped from thin metal strips. One end of a large roll of metal strip is fed in front of the stamping machine, and the other end passes over the hydraulic operation table of the stamping machine and is wound into a coiling pulley. The metal strip is pulled out by the coiling pulley and coiled to stamp out the products.

[0004] However, in existing forming equipment for electronic control connection terminals, most of them use a moving die and a fixed die to cooperate with each other to punch and cut the metal strip. After the punching and cutting are completed, the formed metal terminals are taken out manually. Although multiple terminals can be punched and cut into shape at one time, the demoulding uses an artificial auxiliary stop device, and then the formed terminals in the equipment are taken out manually. This method not only greatly reduces the work efficiency but also increases the operation risk, and the metal strip may deviate during the punching process. Summary of the Invention

[0005] The purpose of the utility model is to provide a punching die for an automotive electronic control connection component to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A punching die for an automotive electronic control connection component includes a base plate and a frame body arranged on the base plate. A lower die is arranged on the frame body, and an upper die adapted to the lower die is vertically slidably arranged on the frame body;

[0008] A driving mechanism is arranged on the frame body, and the driving mechanism is connected to the upper die. Under the action of the driving mechanism, the upper die and the lower die can complete die closing and die opening;

[0009] A correction component is arranged on the frame body. The correction component is connected to the driving mechanism. During the process of the driving mechanism driving the upper die and the lower die to be closed, the correction component will clamp and position the thin metal strip located between the lower die and the upper die.

[0010] An unloading component connected to the driving mechanism is further arranged between the substrate and the frame body. When the driving mechanism drives the upper die and the lower die to be closed, the unloading component remains stationary. When the driving mechanism drives the upper die and the lower die to be separated, the unloading component will cooperate with the driving mechanism to push out the workpiece punched out and located in the lower die.

[0011] As a further solution of the present utility model:

[0012] The driving mechanism includes a lifting plate slidably arranged on the frame body and a moving column slidably matched with the lifting plate. The bottom of the moving column is connected to the top of the upper die.

[0013] A first spring is sleeved on the outer wall of the moving column. The two ends of the first spring respectively abut against the bottom surface of the lifting plate and the top surface of the upper die. A cylinder is arranged on the frame body, and the output end of the cylinder is connected to the top of the lifting plate.

[0014] As a further solution of the present utility model:

[0015] The correction component includes a fixed frame arranged on the frame body and a trapezoidal plate slidably matched with the fixed frame.

[0016] A push rod is vertically arranged on the lifting plate. A trapezoidal block is arranged on the outer wall of the push rod. The trapezoidal block corresponds to the inclined surface of the trapezoidal plate. When the inclined surface of the trapezoidal block abuts against the inclined surface of the trapezoidal plate, the trapezoidal plate will approach the lower die.

[0017] As a further solution of the present utility model:

[0018] A fixing plate is horizontally arranged on the frame body. The bottom end of the push rod penetrates through the fixing plate and is slidably matched therewith.

[0019] A fixed seat is arranged on the fixing plate. A moving rod is horizontally slidably matched on the fixed seat. One end of the moving rod is connected to the side of the trapezoidal plate away from the lower die, and a baffle is arranged at the other end of the moving rod.

[0020] A second spring is sleeved on the outer wall of the moving rod. The two ends of the second spring respectively abut against the fixed seat and the baffle.

[0021] As a further solution of the present utility model:

[0022] The discharging assembly includes a pushing plate that is horizontally and slidably engaged with the substrate, and the pushing plate is adapted to the lower die;

[0023] A rotating shaft is vertically rotatably arranged on the substrate, a rotating rod is arranged on the outer wall of the rotating shaft, and a connecting rod is movably connected between one end of the rotating rod and one end of the pushing plate.

[0024] As a further solution of the present invention:

[0025] A bracket is arranged on the substrate, a transmission rod is horizontally rotatably arranged on the bracket, and a driving bevel gear is arranged at one end of the transmission rod;

[0026] A driven bevel gear is arranged on the outer wall of the rotating shaft, and the driven bevel gear and the driving bevel gear are meshed with each other.

[0027] As a further solution of the present invention:

[0028] A support plate is arranged on the substrate, a rotating column is rotatably arranged on the support plate, and a first pulley is arranged at one end of the rotating column;

[0029] A second pulley is arranged at the other end of the transmission rod, and the first pulley and the second pulley are connected by a belt.

[0030] As a further solution of the present invention:

[0031] A vertical plate is vertically arranged on the side wall of the lifting plate, a plurality of ratchet teeth are uniformly rotatably arranged on the vertical plate along its length direction, a ratchet ring is arranged on the outer wall of the rotating column, and the plurality of ratchet teeth can be meshed with the ratchet ring;

[0032] When the vertical plate moves vertically downward, the ratchet ring will not be affected by the plurality of ratchet teeth. When the vertical plate moves vertically upward, the ratchet ring will rotate under the action of the plurality of ratchet teeth.

[0033] As a further solution of the present invention:

[0034] A limiting groove is formed in the side wall of the support plate along its length direction, a limiting post is arranged on the side wall of the vertical plate, and the limiting post is located inside the limiting groove and is slidably engaged with each other;

[0035] A T-shaped sliding groove is formed in the substrate, a T-shaped sliding rod is arranged at the bottom of the pushing plate, and the T-shaped sliding rod is located inside the T-shaped sliding groove and is slidably engaged with each other.

[0036] Compared with the prior art, the beneficial effects of the utility model are as follows: during the process of the driving mechanism driving the upper die and the lower die to close, the correction component will cooperate with the driving mechanism to clamp and position the metal strip, avoiding the deviation during punching. When the upper die and the lower die are separated under the action of the driving mechanism, the discharging component will cooperate with the driving mechanism to push out the workpiece punched and cut in the lower die, so as to complete the demoulding quickly and smoothly, improving the working efficiency and reducing the operation risk at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure.

[0038] Figure 2 It is a schematic diagram of removing the cylinder structure.

[0039] Figure 3 It is a schematic diagram of another perspective of removing the cylinder structure.

[0040] Figure 4 For Figure 3 The enlarged view of part A in

[0041] Figure 5 It is a schematic diagram of still another perspective of removing the cylinder structure.

[0042] Figure 6 For Figure 5 The enlarged view of part B in

[0043] Figure 7 It is a structural split view of the correction component.

[0044] Figure 8 It is a structural split view of the discharging component.

[0045] Figure 9 It is a structural split view of the support plate and the vertical plate.

[0046] In the figure: 1. Substrate; 101. T-shaped sliding groove; 2. Frame; 3. Lower die; 4. Upper die; 5. Lifting plate; 6. Moving column; 7. First spring; 8. Fixed frame; 9. Trapezoidal plate; 10. Push rod; 11. Trapezoidal block; 12. Fixed plate; 13. Fixed seat; 14. Moving rod; 15. Baffle; 16. Second spring; 17. Pushing plate; 1701. T-shaped sliding rod; 18. Rotating shaft; 19. Rotating rod; 20. Connecting rod; 21. Bracket; 22. Transmission rod; 23. Driving bevel gear; 24. Driven bevel gear; 25. Support plate; 2501. Limit groove; 26. Rotating column; 27. First pulley; 28. Second pulley; 29. Belt; 30. Vertical plate; 3001. Limit post; 31. Ratchet tooth; 32. Ratchet ring; 33. Cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0047] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0048] In addition, the elements in the present utility model are referred to as "fixed to" or "disposed on" another element. It can be directly on another element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0049] Please refer to Figures 1-9 , in the embodiment of the present utility model, a punching die for an automotive electronic control connection component includes a base plate 1 and a frame body 2 disposed on the base plate 1. A lower die 3 is disposed on the frame body 2, and an upper die 4 adapted to the lower die 3 is vertically slidably disposed on the frame body 2;

[0050] A driving mechanism is disposed on the frame body 2. The driving mechanism is connected to the upper die 4. Under the action of the driving mechanism, the upper die 4 and the lower die 3 can complete mold closing and mold opening;

[0051] A correction component is disposed on the frame body 2. The correction component is connected to the driving mechanism. During the process of the driving mechanism driving the upper die 4 to close with the lower die 3, the correction component will clamp and position the thin metal strip located between the lower die 3 and the upper die 4;

[0052] An unloading component connected to the driving mechanism is further disposed between the base plate 1 and the frame body 2. When the driving mechanism drives the upper die 4 to close with the lower die 3, the unloading component remains stationary. When the driving mechanism drives the upper die 4 to open with the lower die 3, the unloading component will cooperate with the driving mechanism to push out the workpiece punched out and located in the lower die 3.

[0053] In this solution, during the process of the driving mechanism driving the upper die 4 and the lower die 3 to close the mold, the correction component will cooperate with the driving mechanism to clamp and position the metal strip, avoiding the situation of deviation during punching. When the upper die 4 and the lower die 3 are separated under the action of the driving mechanism, the discharging component will cooperate with the driving mechanism to push out the workpiece punched out in the lower die 3, so as to complete the demolding quickly and smoothly, improving the working efficiency and reducing the operation risk at the same time.

[0054] As a further solution of the present utility model, the driving mechanism includes a lifting plate 5 slidably arranged on the frame body 2 and a moving column 6 slidably matched with the lifting plate 5, and the bottom of the moving column 6 is connected to the top of the upper die 4;

[0055] A first spring 7 is sleeved on the outer wall of the moving column 6, and both ends of the first spring 7 are abutted against the bottom surface of the lifting plate 5 and the top surface of the upper die 4 respectively. A cylinder 33 is arranged on the frame body 2, and the output end of the cylinder 33 is connected to the top of the lifting plate 5.

[0056] In this embodiment, when the output end of the cylinder 33 drives the lifting plate 5 to move towards the lower die 3, the upper die 4 will follow the movement through the moving column 6 and the first spring 7. When the upper die 4 and the lower die 3 cooperate to complete punching and closing the mold, the first spring 7 will be compressed and contracted under the extrusion of the upper die 4 and the lifting plate 5, so as to realize the soft contact of the upper die 4, the lower die 3 and the lifting plate 5, and avoid damaging the upper die 4 and the lower die 3.

[0057] As a further solution of the present utility model, the correction component includes a fixed frame 8 arranged on the frame body 2 and a trapezoidal plate 9 slidably matched with the fixed frame 8;

[0058] A push rod 10 is vertically arranged on the lifting plate 5, and a trapezoidal block 11 is arranged on the outer wall of the push rod 10. The trapezoidal block 11 corresponds to the inclined surface of the trapezoidal plate 9. When the inclined surface of the trapezoidal block 11 abuts against the inclined surface of the trapezoidal plate 9, the trapezoidal plate 9 will approach the lower die 3.

[0059] In this embodiment, during the process of the lifting plate 5 approaching the lower die 3, the trapezoidal block 11 will move with the lifting plate 5 through the push rod 10 and abut against the trapezoidal plate 9. The trapezoidal plate 9 will approach the lower die 3 under the action of the trapezoidal block 11, so as to clamp and position the metal strip located between the lower die 3 and the upper die 4, and the metal strip deviates during the punching process.

[0060] As a further solution of the present utility model, a fixing plate 12 is horizontally arranged on the frame body 2, and the bottom end of the push rod 10 penetrates through the fixing plate 12 and is slidably matched therewith;

[0061] A fixing seat 13 is arranged on the fixing plate 12. A moving rod 14 is horizontally slidably engaged with the fixing seat 13. One end of the moving rod 14 is connected to the side of the trapezoidal plate 9 away from the lower die 3, and a baffle 15 is arranged at the other end of the moving rod 14.

[0062] A second spring 16 is sleeved on the outer wall of the moving rod 14, and two ends of the second spring 16 respectively abut against the fixing seat 13 and the baffle 15.

[0063] In this embodiment, during the process of the trapezoidal plate 9 approaching the lower die 3, the moving rod 14 and the baffle 15 will move along with the trapezoidal plate 9 and further compress the second spring 16. When the trapezoidal block 11 follows the push rod 10 to separate from the trapezoidal plate 9, the trapezoidal plate 9 will reset under the action of the second spring 16.

[0064] As a further solution of the present utility model, the discharging assembly includes a pushing plate 17 horizontally slidably engaged with the substrate 1, and the pushing plate 17 is adapted to the lower die 3.

[0065] A rotating shaft 18 is vertically rotatably arranged on the substrate 1. A rotating rod 19 is arranged on the outer wall of the rotating shaft 18, and a connecting rod 20 is movably connected between one end of the rotating rod 19 and one end of the pushing plate 17.

[0066] In this embodiment, since the pushing plate 17 is horizontally slidably engaged with the substrate 1 and the pushing plate 17 is movably connected to the rotating rod 19 through the connecting rod 20, when the rotating shaft 18 rotates, the pushing plate 17 will be driven to perform horizontal reciprocating movement through the rotating rod 19 and the connecting rod 20, so as to push out the workpiece punched out in the lower die 3.

[0067] As a further solution of the present utility model, a support 21 is arranged on the substrate 1. A transmission rod 22 is horizontally rotatably arranged on the support 21, and a driving bevel gear 23 is arranged at one end of the transmission rod 22.

[0068] A driven bevel gear 24 is arranged on the outer wall of the rotating shaft 18, and the driven bevel gear 24 and the driving bevel gear 23 are meshed with each other.

[0069] In this embodiment, since the driven bevel gear 24 fixed on the outer wall of the rotating shaft 18 is meshed with the driving bevel gear 23, when the transmission rod 22 rotates, the transmission rod 22 will drive the driven bevel gear 24 and the rotating shaft 18 to rotate synchronously through the driving bevel gear 23.

[0070] As a further solution of the present utility model, a support plate 25 is arranged on the substrate 1. A rotating column 26 is rotatably arranged on the support plate 25, and a first pulley 27 is arranged at one end of the rotating column 26.

[0071] The other end of the transmission rod 22 is provided with a second pulley 28, and the first pulley 27 and the second pulley 28 are connected by a belt 29.

[0072] In this embodiment, when the rotating column 26 rotates, the first pulley 27 will rotate following the rotating column 26. At the same time, the transmission rod 22 will rotate synchronously following the first pulley 27 through the second pulley 28 and the belt 29.

[0073] As a further solution of the present invention, a vertical plate 30 is vertically arranged on the side wall of the lifting plate 5. A plurality of ratchet teeth 31 are rotatably arranged on the vertical plate 30 along its length direction. A ratchet ring 32 is arranged on the outer wall of the rotating column 26. A plurality of the ratchet teeth 31 can be meshed with the ratchet ring 32;

[0074] When the vertical plate 30 moves vertically downward, the ratchet ring 32 will not be affected by the acting forces of the plurality of ratchet teeth 31. When the vertical plate 30 moves vertically upward, the ratchet ring 32 will rotate under the action of the plurality of ratchet teeth 31.

[0075] In this embodiment, as Figure 6 shown, since a one-way driving structure is formed by the plurality of ratchet teeth 31 rotatably arranged on the vertical plate 30 and the ratchet ring 32, when the vertical plate 30 follows the lifting plate 5 and moves downward to the lower die 3, the plurality of ratchet teeth 31 will not interact with the ratchet ring 32. Therefore, the ratchet ring 32 remains stationary;

[0076] When the vertical plate 30 follows the lifting plate 5 and moves away from the lower die 3, the ratchet ring 32 will rotate under the action of the plurality of ratchet teeth 31. Also, because the ratchet ring 32 is arranged on the outer wall of the rotating column 26, the rotating column 26 will rotate following the ratchet ring 32.

[0077] As a further solution of the present invention, a limiting groove 2501 is opened on the side wall of the support plate 25 along its length direction. A limiting post 3001 is arranged on the side wall of the vertical plate 30. The limiting post 3001 is located inside the limiting groove 2501 and is in sliding fit with each other;

[0078] A T-shaped sliding groove 101 is opened on the base plate 1. A T-shaped sliding rod 1701 is arranged at the bottom of the pushing plate 17. The T-shaped sliding rod 1701 is located inside the T-shaped sliding groove 101 and is in sliding fit with each other.

[0079] In this embodiment, since the limiting post 3001 is located inside the limiting groove 2501 and is in sliding fit with each other, the stability of the vertical plate 30 during vertical movement is ensured;

[0080] Also, since the T-shaped slide bar 1701 is located inside the T-shaped chute 101 and they are in sliding fit with each other, the horizontal sliding fit between the pushing plate 17 and the substrate 1 is realized.

[0081] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0082] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A punching die for an automotive electronic control connection assembly, comprising a substrate (1) and a frame (2) arranged on the substrate (1), characterized in that: A lower mold (3) is arranged on the frame (2), and an upper mold (4) adapted to the lower mold (3) is vertically slidably arranged on the frame (2); The frame (2) is provided with a driving mechanism, the driving mechanism being connected to the upper mold (4), and under the action of the driving mechanism, the upper mold (4) and the lower mold (3) can complete mold closing and mold separation; The frame (2) is provided with a correction component, the correction component being connected to the driving mechanism. When the driving mechanism drives the upper die (4) and the lower die (3) to close the die, the correction component clamps and positions the thin metal strip between the lower die (3) and the upper die (4); A discharge assembly connected to the driving mechanism is also provided between the base plate (1) and the frame (2); when the driving mechanism drives the upper die (4) and the lower die (3) to close the die, the discharge assembly remains stationary; when the driving mechanism drives the upper die (4) and the lower die (3) to separate the die, the discharge assembly cooperates with the driving mechanism to push out the workpiece punched out of the lower die (3).

2. The punching die of the automotive electronic control connection assembly according to claim 1, characterized in that: The driving mechanism comprises a lifting plate (5) slidably arranged on the frame (2) and a moving column (6) slidably matched with the lifting plate (5), and the bottom of the moving column (6) is connected to the top of the upper mold (4); The outer wall of the movable column (6) is sleeved with a first spring (7), and the two ends of the first spring (7) are respectively in contact with the bottom surface of the lifting plate (5) and the top surface of the upper mold (4). A cylinder (33) is arranged on the frame (2), and the output end of the cylinder (33) is connected to the top of the lifting plate (5).

3. The punching die of the automotive electronic control connection assembly according to claim 2, characterized in that: The correction component comprises a fixing frame (8) arranged on the frame body (2) and a trapezoidal plate (9) slidably matched with the fixing frame (8); A push rod (10) is vertically arranged on the lifting plate (5), and a trapezoidal block (11) is arranged on the outer wall of the push rod (10). The trapezoidal block (11) corresponds to the inclined surface of the trapezoidal plate (9). When the inclined surface of the trapezoidal block (11) abuts against the inclined surface of the trapezoidal plate (9), the trapezoidal plate (9) will approach the lower mold (3).

4. The punching die for an automotive electronic control connection assembly according to claim 3, characterized in that: A fixing plate (12) is horizontally arranged on the frame (2), and the bottom end of the push rod (10) passes through the fixing plate (12) and slides with each other; The fixed plate (12) is provided with a fixed seat (13), and a moving rod (14) is horizontally slidably matched on the fixed seat (13), one end of the moving rod (14) is connected to a side of the trapezoidal plate (9) away from the lower mold (3), and the other end of the moving rod (14) is provided with a baffle (15); A second spring (16) is sleeved on the outer wall of the moving rod (14), and two ends of the second spring (16) are respectively in contact with the fixing seat (13) and the baffle (15).

5. The punching die for an automotive electronic control connection assembly according to claim 2, characterized in that: The discharge assembly comprises a push plate (17) that is horizontally slidably matched with the base plate (1), and the push plate (17) is adapted to the lower die (3); A rotating shaft (18) is vertically rotatably arranged on the base plate (1), a rotating rod (19) is arranged on the outer wall of the rotating shaft (18), and a connecting rod (20) is movably connected to one end of the pushing plate (17) at one end of the rotating rod (19).

6. The punching die for automobile electronic control connection components according to claim 5, characterized in that: A bracket (21) is arranged on the base plate (1), a transmission rod (22) is arranged on the bracket (21) for horizontal rotation, and a driving bevel gear (23) is arranged at one end of the transmission rod (22); A driven bevel gear (24) is provided on the outer wall of the rotating shaft (18), and the driven bevel gear (24) and the driving bevel gear (23) are meshed with each other.

7. The punching die for automobile electronic control connection components according to claim 6, characterized in that: A support plate (25) is arranged on the base plate (1), a rotating column (26) is rotatably arranged on the support plate (25), and a first pulley (27) is arranged at one end of the rotating column (26); A second belt pulley (28) is provided at the other end of the transmission rod (22), and the first belt pulley (27) and the second belt pulley (28) are connected via a belt (29).

8. The punching die for automobile electronic control connection components according to claim 7, characterized in that: A vertical plate (30) is vertically arranged on the side wall of the lifting plate (5), a plurality of ratchet teeth (31) are evenly rotated and arranged on the vertical plate (30) along its length direction, a ratchet ring (32) is arranged on the outer wall of the rotating column (26), and the plurality of ratchet teeth (31) can be meshed with the ratchet ring (32); When the vertical plate (30) moves vertically downward, the ratchet ring (32) will not be affected by the multiple ratchet teeth (31), and when the vertical plate (30) moves vertically upward, the ratchet ring (32) will rotate under the action of the multiple ratchet teeth (31).

9. The punching die of the automotive electronic control connection assembly according to claim 8, characterized in that: The side wall of the support plate (25) is provided with a limiting groove (2501) along its length direction, and the side wall of the vertical plate (30) is provided with a limiting column (3001), and the limiting column (3001) is located inside the limiting groove (2501) and is slidably matched with each other; The base plate (1) is provided with a T-shaped slide groove (101), and the bottom of the push plate (17) is provided with a T-shaped slide rod (1701), and the T-shaped slide rod (1701) is located inside the T-shaped slide groove (101) and slides with each other.

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