Automatic die casting punching equipment

Abstract

The invention relates to automatic die casting punching equipment, and belongs to the technical field of die casting machining, the automatic die casting punching equipment comprises an equipment main body, the outer wall of the equipment main body is fixedly connected with a U-shaped fixed rail, the inner side wall of the fixed rail is slidably connected with a sliding rod, the outer wall of the sliding rod is provided with a lower die, and a punching head is arranged above the lower die. Through cooperative use of a sliding rod, a pulling rod, a first air spraying pipe and a second air spraying pipe, when a punching head descends to punch die castings in the lower dies, a first swing rod drives the sliding rod to do reciprocating motion, the lower dies distributed in a straight line are switched one by one for use, and the punching efficiency is improved. In the process, a pulling rod is driven to move in the opposite direction, then the first air spraying pipe and the second air spraying pipe are made to rotate relative to each other according to the using angle, the surfaces of the lower die and the punching head are blown and cleaned at the same time, and on the basis that multiple sets of die castings are punched one by one, the surfaces of the punching head and the lower die are blown and cleaned.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of die casting processing, in particular to an automatic punching device for die castings. BACKGROUND

[0002] A die casting is a pressure-cast part. It is a copper, zinc, aluminum or aluminum alloy metal that is heated to a liquid state and poured into the inlet of a pressure casting machine. The machine then casts the metal into the shape and size of the mold, creating a copper, zinc, aluminum or aluminum alloy part. This part is commonly referred to as a die casting. During the production and processing of die castings, a punching device is used to punch the die castings.

[0003] In the prior art, a precise positioning automatic punching device for die castings, with publication number CN 115870399 A, belongs to the technical field of die casting processing. It includes a support assembly, a support disc installed above the support assembly, a punching assembly above the support disc, and two support plates between the support assembly and the punching assembly and above both sides of the support disc. The invention sets up a rotating protection device, allowing the operator to adjust the angle of the punching assembly by operating the drive motor when needed, thus better meeting the punching needs of different die castings and improving the precision of the device. The invention sets up a rotating protection device, allowing the device to block and shield rain and hail when exposed to the outside, thus reducing the possibility of damage to the punching assembly and improving the practicality of the device.

[0004] However, the existing punching device often uses a single lower mold to punch and cut the die castings. After the die castings are punched and cut, the device needs to be stopped for recharging. This method is not effective for continuous recharging with multiple lower molds, reducing the processing efficiency of the punching device. When switching between lower molds, the impurities on the surface of the punching head and the lower mold are not cleaned effectively, affecting the quality of the subsequent punching process. In addition, the existing punching device often uses a single punching path for processing, which reduces the flexibility of the device in processing different types of die castings and does not meet the needs of users. Therefore, we propose an automatic punching device for die castings. SUMMARY

[0005] To solve the problems mentioned in the above background, the application provides an automatic punching device for die castings to solve the problems of low uninterrupted feeding on the punching device by multiple lower molds, low processing efficiency of the punching device, low simultaneous blowing and cleaning of impurities adsorbed on the punching head and the lower mold surface, and low horizontal and vertical punching path adjustment of the die castings on the device.

[0006] To achieve the above technical purposes, the application adopts the following technical solutions:

[0007] An automatic punching device for die castings comprises a device main body, characterized in that a fixed track in a U shape is fixedly connected to the outer wall of the device main body, a sliding rod is slidably connected to the inner side wall of the fixed track, a lower mold is installed on the outer wall of the sliding rod, and a punching head is arranged above the lower mold.

[0008] A pulling rod is rotatably connected to the outer wall of the sliding rod, one end of the pulling rod is rotatably connected to a connecting rack, the bottom of the connecting rack is fixedly connected to an extension rod fixedly connected to the outer wall of the device main body, the outer wall of the connecting rack is engaged with a connecting gear, and the rotation center of the connecting gear is fixedly connected to a first jet pipe rotatably connected to the inner side wall of the device main body through a rotating shaft.

[0009] A gas supply pump is arranged on the inner side wall of the device main body, a gas conveying pipe is fixedly connected to the outer wall of the gas supply pump, one end of the gas conveying pipe is fixedly connected to a rotating joint rotatably connected to the end of the first jet pipe, and a second jet pipe is rotatably connected to the inner side wall of the device main body.

[0010] Preferably, the pulling rod is provided with two groups, the movement directions of the two groups of pulling rods are opposite, and the connecting rack and the pulling rod are one-to-one correspondingly arranged.

[0011] Preferably, the first jet pipe is inclined to one side of the lower mold, the second jet pipe is inclined to one side of the punching head, and the rotation directions of the first jet pipe and the second jet pipe are opposite.

[0012] Preferably, the lower mold is arranged in a linear shape on the outer wall of the fixed track, a positioning sensor is arranged on the inner side wall of the fixed track, the positioning sensor is electrically connected to a first motor, and the positioning sensor is arranged corresponding to the position of the lower mold.

[0013] Preferably, a first motor is arranged on the outer wall of the device main body, a first swing rod is fixedly connected to the output end of the first motor, a sliding column fixedly connected to the outer wall of the sliding rod is slidably connected to the outer wall of the first swing rod, and a limiting groove is arranged at the connection part of the outer wall of the first swing rod and the sliding column.

[0014] Preferably, the outer wall of the equipment body is fixedly connected with a second motor, the output end of the second motor is fixedly connected with a second swing rod, the outer wall of the second swing rod is slidably connected with a connecting column slidably connected with the outer wall of the equipment body, one end of the connecting column is provided with a third motor, and the output end of the third motor is fixedly connected with a turnover plate.

[0015] The outer wall of the second swing rod and the connecting part of the connecting column are provided with a connecting groove, and the outer wall of the sliding groove is in a U-shaped contour.

[0016] Preferably, the top of the turnover plate is provided with an electric push rod, one end of the electric push rod is fixedly connected with a lifting block, and the top of the lifting block is fixedly connected with a limiting rod slidably connected with the outer wall of the turnover plate.

[0017] Preferably, the bottom of the lifting block is provided with a fourth motor, the output end of the fourth motor is fixedly connected with a first threaded rod, the outer wall of the first threaded rod is threadedly connected with an adjusting rod slidably connected with the bottom of the lifting block, the outer wall of the adjusting rod is provided with a fifth motor, the output end of the fifth motor is fixedly connected with a second threaded rod, and the outer wall of the second threaded rod is threadedly connected with an adjusting block slidably connected with the outer wall of the adjusting rod.

[0018] The bottom of the lifting block and the connecting part of the adjusting rod are provided with a moving groove, and the lifting block and the punching head are detachably connected.

[0019] Preferably, the bottom of the equipment body is provided with a waste collecting groove corresponding to the position of the lower die, the inner side wall of the waste collecting groove is detachably connected with a filter plate, and one end of the waste collecting groove is provided with a discharge port.

[0020] Preferably, the top of the punching head is fixedly connected with a buffer seat, the inner side wall of the buffer seat is provided with a damping spring, and the buffer seat and the adjusting block are fixedly connected.

[0021] Compared with the prior art, the present application has the following beneficial effects:

[0022] 1. By cooperating the sliding rod, the pulling rod, the first jet pipe and the second jet pipe, when the punching head descends to punch the die casting in the lower die, the sliding rod is driven by the first swing rod to reciprocate, the lower die is used in one piece, the pulling rod is driven to move in the opposite direction, and the use angle of the first jet pipe and the second jet pipe is relatively rotated, so that the surface of the lower die and the punching head is blown and cleaned.

[0023] 2、The first swing lever, the sliding column, the air supply pump, the air pipe and the rotary joint are used in cooperation, when a plurality of groups of die castings on the lower die need to be switched and processed, the first swing lever is rotated, the sliding column is connected, the sliding rod and the lower die are driven to reciprocate on the inner side wall of the fixed track, the lower die is moved to the descending position of the punching head one by one, and the die castings are punched and cut one by one.

[0024] 3、The second swing lever, the connecting column, the turnover plate and the sliding groove are used in cooperation, when the punching head punches and cuts the die castings, the second swing lever is driven to rotate, the connecting column and the turnover plate are driven to slide along the inner wall of the sliding groove, the processing position of the punching head is adjusted in a U-shaped track, and the punching head can punch and cut the die castings in the vertical direction and the horizontal direction.

[0025] 4、The adjusting rod and the adjusting sliding block are driven to slide after the movement paths of the turnover plate in the horizontal direction and the vertical direction are adjusted, so that the punching head slides in a cross track at the bottom of the turnover plate, and the punching position of the punching head is adjusted and processed.

[0026] 5、The waste collecting groove in the application is arranged corresponding to the lower die, the waste generated by punching falls into the collecting groove after being blown, the filter plate preliminarily filters the waste, the discharge port facilitates centralized cleaning, waste accumulation is avoided to affect equipment operation, and equipment maintenance convenience is improved.

[0027] 6、In the application, the buffer seat at the top of the punching head and the damping spring can buffer the impact force in the punching process, reduce the wear of the punching head and the die, avoid surface defects of the die casting caused by impact, prolong the service life of the equipment and improve the product quality.

[0028] 7、The positioning sensor in the inner side of the fixed track is electrically connected with the first motor, the position of the lower die is accurately detected when the die is switched, a feedback signal controls the start and stop of the first motor, the die is accurately positioned at the punching station, punching misalignment is avoided, and the processing precision is improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a schematic view of the overall structure of the application;

[0030] Figure 2 It is a schematic view of the overall side structure of the application;

[0031] Figure 3 It is a schematic view of the position distribution structure of the lower die and the pulling rod of the application;

[0032] Figure 4 It is a schematic view of the connection structure of the first swing lever and the sliding column of the application;

[0033] Figure 5 This is a schematic diagram of the connection structure between the second swing rod and the connecting column of the present invention;

[0034] Figure 6 This is a schematic diagram of the adjustable slider position distribution structure of the present invention;

[0035] Figure 7 This is a schematic diagram of the position distribution structure of the adjusting slider and adjusting rod of the present invention;

[0036] Figure 8 For the present invention Figure 3 Enlarged structural diagram at point A in the diagram;

[0037] Figure 9 For the present invention Figure 4 A magnified structural diagram at point B in the diagram.

[0038] The labels in the attached diagram are:

[0039] 1. Main body of the equipment; 2. Fixed track; 3. Sliding rod; 4. Lower mold; 5. Pull rod; 6. Connecting rack; 7. Telescopic rod; 8. Connecting gear; 9. First jet pipe; 10. Air supply pump; 11. Air delivery pipe; 12. Rotary joint; 13. First motor; 14. First swing rod; 15. Sliding column; 16. Limiting groove; 17. Second jet pipe; 18. Second motor; 19. Second swing rod; 20. Connecting column; 21. Connecting groove; 22. Slide groove; 23. Third motor; 24. Tilting plate; 25. Electric push rod; 26. Lifting block; 27. Limiting rod; 28. Fourth motor; 29. ​​First threaded rod; 30. Adjusting rod; 31. Moving groove; 32. Fifth motor; 33. Second threaded rod; 34. Adjusting slider; 35. Punching head. Detailed Implementation

[0040] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0041] Please see Figures 1 to 9 This embodiment provides an automatic punching and cutting device for die castings, including a main body 1. A fixed track 2 in a U-shape is fixedly connected to the outer wall of the main body 1. A sliding rod 3 is slidably connected to the inner side wall of the fixed track 2. A lower mold 4 is installed on the outer wall of the sliding rod 3. A punching head 35 is provided above the lower mold 4.

[0042] A pull rod 5 is rotatably connected to the outer wall of the sliding rod 3. A connecting rack 6 is rotatably connected to one end of the pull rod 5. There are two sets of pull rods 5, and the two sets of pull rods 5 move in opposite directions. The connecting rack 6 is arranged in a one-to-one correspondence with the pull rod 5. A telescopic rod 7 is fixedly connected to the bottom of the connecting rack 6 and is fixedly connected to the outer wall of the equipment body 1. A connecting gear 8 meshes with the outer wall of the connecting rack 6. The rotation center of the connecting gear 8 is fixedly connected to the first jet pipe 9, which is rotatably connected to the inner wall of the equipment body 1, through a rotating shaft. The first jet pipe 9 is inclined towards the mold 4 side, and the second jet pipe 17 is inclined towards the punching head 35 side. The rotation directions of the first jet pipe 9 and the second jet pipe 17 are opposite.

[0043] An air supply pump 10 is installed on the inner wall of the main body 1. An air supply pipe 11 is fixedly connected to the outer wall of the air supply pump 10. One end of the air supply pipe 11 is fixedly connected to a rotary joint 12 that is rotatably connected to the end of the first air jet pipe 9. A second air jet pipe 17 is rotatably connected to the inner wall of the main body 1. The lower mold 4 is arranged in a straight line on the outer wall of the fixed track 2. A positioning sensor is installed on the inner wall of the fixed track 2. The positioning sensor is electrically connected to the first motor 13. The positioning sensor is set to correspond to the position of the lower mold 4. The positioning sensor on the inner side of the fixed track 2 is electrically connected to the first motor 13. When the mold is switched, the position of the lower mold 4 is accurately detected, and the feedback signal controls the start and stop of the first motor 13 to ensure that the mold is accurately positioned at the punching station, avoid punching misalignment, and improve processing accuracy. The outer wall of the main body 1 is equipped with a first The output end of the first motor 13 is fixedly connected to the first swing rod 14. The outer wall of the first swing rod 14 is slidably connected to the sliding column 15, which is fixedly connected to the outer wall of the sliding rod 3. A limit groove 16 is opened at the connection between the outer wall of the first swing rod 14 and the sliding column 15. When the punching head 35 descends to punch the die-casting parts in the lower mold 4, the first swing rod 14 drives the sliding rod 3 to reciprocate, switching the lower mold 4 which is distributed in a straight line one by one. This drives the pulling rod 5 to move in the opposite direction, thereby driving the first air pipe 9 and the second air pipe 17 to rotate relative to each other. This simultaneously blows clean the surfaces of the lower mold 4 and the punching head 35, improving the ability to punch multiple sets of die-casting parts one by one.

[0044] like Figure 5 and Figure 6As shown, a second motor 18 is fixedly connected to the outer wall of the main body 1. A second swing rod 19 is fixedly connected to the output end of the second motor 18. A connecting column 20 is slidably connected to the outer wall of the second swing rod 19 and is slidably connected to the outer wall of the main body 1. A third motor 23 is provided at one end of the connecting column 20. A flip plate 24 is fixedly connected to the output end of the third motor 23. A connecting groove 21 is provided at the connection between the outer wall of the second swing rod 19 and the connecting column 20. A sliding groove 22 is provided at the connection between the outer wall of the main body 1 and the connecting column 20. The outer wall of the sliding groove 22... The profile is U-shaped. An electric push rod 25 is provided on the top of the flip plate 24. One end of the electric push rod 25 is fixedly connected to a lifting block 26. The top of the lifting block 26 is fixedly connected to a limiting rod 27 that slides on the outer wall of the flip plate 24. When the punching head 35 performs punching processing on the die casting, it can drive the second swing rod 19 to rotate, causing the connecting column 20 and the flip plate 24 to slide along the inner wall of the slide groove 22, so that the processing position of the punching head 35 can be adjusted in a U-shaped trajectory, allowing the punching head 35 to perform punching processing operations on the die casting from both vertical and horizontal directions.

[0045] like Figure 7 As shown, a fourth motor 28 is provided at the bottom of the lifting block 26. The output end of the fourth motor 28 is fixedly connected to a first threaded rod 29. The outer wall of the first threaded rod 29 is threadedly connected to an adjusting rod 30 that is slidably connected to the bottom of the lifting block 26. A fifth motor 32 is provided on the outer wall of the adjusting rod 30. The output end of the fifth motor 32 is fixedly connected to a second threaded rod 33. The outer wall of the second threaded rod 33 is threadedly connected to an adjusting slider 34 that is slidably connected to the outer wall of the adjusting rod 30. A moving groove 31 is provided at the connection between the bottom of the lifting block 26 and the adjusting rod 30. The lifting block 26 and the punching head 35 are detachably connected. By moving the adjusting rod 30 and the adjusting slider 34, the horizontal and vertical movement paths of the flip plate 24 can be adjusted, and the adjusting rod 30 and the adjusting slider 34 can be driven to slide, so that the punching head 35 slides in a cross trajectory at the bottom of the flip plate 24, and the punching position of the punching head 35 can be adjusted for processing.

[0046] A waste collection trough is provided at the bottom of the main body 1, corresponding to the position of the lower mold 4. A filter plate is detachably connected to the inner wall of the waste collection trough. A discharge port is provided at one end of the waste collection trough. The waste collection trough is set to correspond to the lower mold 4. The waste generated by punching falls into the collection trough after being blown away. The filter plate performs preliminary filtration of the waste. The discharge port is easy to clean, avoiding the accumulation of waste that affects the operation of the equipment and improving the convenience of equipment maintenance.

[0047] A buffer seat is fixedly connected to the top of the punching head 35. A damping spring is provided on the inner side wall of the buffer seat. The buffer seat and the adjusting slider 34 are fixedly connected. The buffer seat and the damping spring on the top of the punching head can buffer the impact force during the punching process, reduce the wear of the punching head and the mold, and at the same time avoid surface defects of the die casting due to impact, extend the service life of the equipment and improve product quality.

[0048] Working principle:

[0049] like Figures 1-9 As shown, when the die casting punching equipment is in use, the die castings to be processed are placed into the lower molds 4 arranged in a straight line to complete the feeding operation. At this time, the die castings that need to be replenished in the molds can be prepared in advance to prepare for uninterrupted processing.

[0050] Then, the first motor 13 is turned on, driving the first swing rod 14 to rotate, which in turn drives the sliding column 15 to slide along the limiting groove 16, thereby driving the sliding rod 3 to slide back and forth along the inner side of the fixed track 2, realizing the orderly switching of the lower mold 4. The positioning sensor 41 on the inner side of the fixed track 2 detects the position of the lower mold 4 in real time. When the mold moves to the punching station, the positioning sensor 41 sends a signal to the first motor 13 to control the start and stop of the first motor 13, ensuring accurate positioning of the mold.

[0051] Next, based on the processing requirements of the die-casting parts, adjust the punching path and position: Turn on the second motor 18, which drives the second swing rod 19 to rotate, causing the connecting column 20 to slide along the connecting groove 21 and the U-shaped slide 22, adjusting the horizontal and vertical positions of the flip plate 24; turn on the third motor 23 to adjust the horizontal angle of the flip plate 24; turn on the electric push rod 25 to drive the lifting block 26 to rise and fall, adjusting the punching height of the punching head 35; turn on the fourth motor 28, which drives the adjusting rod 30 to slide along the moving groove 31 via the first threaded rod 29; turn on the fifth motor 32, which drives the adjusting slider 34 to slide along the adjusting rod 30 via the second threaded rod 33, achieving cross-track adjustment of the punching head 35. After adjustment, the punching head 35 descends to punch the die-casting parts in the lower mold 4. During the punching process, the damping spring 40 in the buffer seat 39 buffers the impact force, protecting the equipment and the product.

[0052] Then, as the sliding rod 3 drives the lower mold 4 to switch, the pulling rod 5 rotates with the sliding rod 3, causing the connecting rack 6 to rise and fall along the telescopic rod 7. The connecting rack 6 drives the connecting gear 8 to rotate, which in turn causes the first air pipe 9 and the second air pipe 17 to rotate in opposite directions. The air supply pump 10 is turned on, and gas is delivered to the first air pipe 9 and the second air pipe 17 through the air supply pipe 11 and the rotary joint 12, respectively blowing away impurities on the surface of the lower mold 4 and the punching head 35. The waste material after blowing falls into the waste collection tank 36 at the bottom of the main body 1 of the equipment, is filtered by the filter plate 37, and is then collected and cleaned through the discharge port 38.

[0053] After the current die punching is completed, the first motor 13 starts again, driving the next set of dies to move to the punching station. At the same time, the dies that have completed punching can be replenished in the non-punching area, realizing uninterrupted punching and replenishment, which greatly improves processing efficiency.

[0054] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An automatic die-cutting apparatus for die castings, comprising an apparatus body (1), characterized in that: The outer wall of the equipment body (1) is fixedly connected with a U-shaped fixed track (2), the inner side wall of the fixed track (2) is slidably connected with a sliding rod (3), the outer wall of the sliding rod (3) is provided with a lower mold (4), and the upper side of the lower mold (4) is provided with a punching head (35); The outer wall of the sliding rod (3) is rotatably connected with a pulling rod (5), one end of the pulling rod (5) is rotatably connected with a connecting rack (6), the bottom of the connecting rack (6) is fixedly connected with a telescopic rod (7) fixedly connected with the outer wall of the equipment body (1), the outer wall of the connecting rack (6) is engaged with a connecting gear (8), and the rotation center of the connecting gear (8) is fixedly connected with a first air jet pipe (9) rotatably connected with the inner side wall of the equipment body (1) through a rotating shaft. The inner side wall of the equipment body (1) is provided with a gas supply pump (10), the outer wall of the gas supply pump (10) is fixedly connected with a gas conveying pipe (11), one end of the gas conveying pipe (11) is fixedly connected with a rotating joint (12) rotatably connected with the end of the first air jet pipe (9), and the inner side wall of the equipment body (1) is rotatably connected with a second air jet pipe (17).

2. The automatic die cutting apparatus for die castings according to claim 1, characterized in that: The pulling rod (5) is provided with two groups, the movement directions of the two groups of pulling rods (5) are opposite, and the connecting rack (6) and the pulling rod (5) are correspondingly arranged.

3. The automatic die cutting apparatus for die castings according to claim 1, characterized in that: The first air jet pipe (9) is inclined to one side of the lower mold (4), the second air jet pipe (17) is inclined to one side of the punching head (35), and the rotation directions of the first air jet pipe (9) and the second air jet pipe (17) are opposite.

4. The automatic die cutting apparatus for die castings according to claim 1, characterized in that: The lower mold (4) is linearly distributed on the outer wall of the fixed track (2), the inner side wall of the fixed track (2) is provided with a positioning sensor, the positioning sensor is electrically connected with a first motor (13), and the positioning sensor is arranged corresponding to the position of the lower mold (4).

5. The automatic die cutting apparatus for die castings according to claim 1, characterized in that: The outer wall of the equipment body (1) is provided with a first motor (13), the output end of the first motor (13) is fixedly connected with a first swing rod (14), the outer wall of the first swing rod (14) is slidably connected with a sliding column (15) fixedly connected with the outer wall of the sliding rod (3), and a limiting groove (16) is formed in the connecting part of the outer wall of the first swing rod (14) and the sliding column (15).

6. The automatic die cutting apparatus for die castings according to claim 1, characterized in that: The outer wall of the equipment body (1) is fixedly connected with a second motor (18), the output end of the second motor (18) is fixedly connected with a second swing rod (19), the outer wall of the second swing rod (19) is slidably connected with a connecting column (20) slidably connected with the outer wall of the equipment body (1), one end of the connecting column (20) is provided with a third motor (23), the output end of the third motor (23) is fixedly connected with a turnover plate (24); A connecting groove (21) is formed in the connecting part of the outer wall of the second swing rod (19) and the connecting column (20), a sliding groove (22) is formed in the connecting part of the outer wall of the equipment body (1) and the connecting column (20), and the outer wall profile of the sliding groove (22) is U-shaped.

7. The apparatus according to claim 6, wherein: The top of the turnover plate (24) is provided with an electric push rod (25), one end of the electric push rod (25) is fixedly connected with a lifting block (26), and the top of the lifting block (26) is fixedly connected with a limiting rod (27) in sliding connection with the outer wall of the turnover plate (24).

8. The apparatus according to claim 7, wherein: The bottom of the lifting block (26) is provided with a fourth motor (28), the output end of the fourth motor (28) is fixedly connected with a first threaded rod (29), the outer wall of the first threaded rod (29) is threadedly connected with an adjusting rod (30) in sliding connection with the bottom of the lifting block (26), the outer wall of the adjusting rod (30) is provided with a fifth motor (32), the output end of the fifth motor (32) is fixedly connected with a second threaded rod (33), and the outer wall of the second threaded rod (33) is threadedly connected with an adjusting sliding block (34) in sliding connection with the outer wall of the adjusting rod (30). The bottom of the lifting block (26) and the connecting part of the adjusting rod (30) are provided with a moving groove (31), and the lifting block (26) and the punching head (35) are detachably connected.

9. The apparatus according to claim 1, wherein: The bottom of the device body (1) is provided with a waste collecting groove corresponding to the position of the lower die (4), the inner side wall of the waste collecting groove is detachably connected with a filter plate, and one end of the waste collecting groove is provided with a discharge port.

10. The apparatus according to claim 1, wherein: The top of the punching head (35) is fixedly connected with a buffer seat, the inner side wall of the buffer seat is provided with a damping spring, and the buffer seat and the adjusting sliding block (34) are fixedly connected.

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