High-pressure flushing equipment for aluminum cover plate of battery

Abstract

The invention provides battery aluminum cover plate high-pressure flushing equipment, and relates to the technical field of dirt cleaning, the battery aluminum cover plate high-pressure flushing equipment comprises a cleaning table, a flushing mechanism, a first clamp and a second clamp, a water injection pipeline is inserted in the side edge of the cleaning table, a rotating groove is formed in the middle of the surface of the cleaning table, and a rotating sleeve is integrally formed at the bottom of the flushing mechanism; according to the battery aluminum cover plate cleaning device, the battery aluminum cover plate is placed between the two clamps, the clamping effect is provided, vertical flushing is conducted from the two sides by means of the flushing mechanisms, the cleaning efficiency is improved, and the cleaning efficiency is improved. According to the washing device, the stability in the washing process is improved, and the two washing stations can be alternately transferred into the washing mechanism in cooperation with driving of the two clamps, so that the feeding, discharging and washing processes can be synchronously completed, and the discharging process can be rapidly completed in the clamping state in the moving process.

Description

Technical Field

[0001] The invention relates to the technical field of dirt cleaning, and in particular to a high-pressure washing device for a battery aluminum cover plate. Background Art

[0002] Lubricants are added to the battery aluminum cover during the production process. These lubricants may contaminate the product and affect the stability of the rubber plug. Therefore, the main purpose of cleaning is to wash off these lubricants. At the same time, electrolytes may remain on the surface of the battery aluminum cover. If the surface electrolyte is not cleaned thoroughly, it will seriously corrode the aluminum shell and affect the appearance and service life of the product. Therefore, using high-pressure washing equipment can effectively remove these electrolytes.

[0003] The high-pressure flushing equipment used for battery aluminum cover plates in the prior art can complete the flushing process with the help of a high-pressure nozzle after placing the battery aluminum cover plates on a conveyor belt. However, this solution requires two flushing treatments on both sides of the battery aluminum cover plates, and the battery aluminum cover plates are very likely to shake and deviate during the flushing process, resulting in insufficient stability. On the other hand, the conventional solution also uses a clamp to clamp the battery aluminum cover plates and then perform high-pressure flushing. However, this solution will cause the use of the clamp to cause cumbersome operation steps in the early loading stage and the subsequent discharging stage, thereby reducing the overall cleaning and processing efficiency. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a high-pressure flushing equipment for battery aluminum cover plates to solve the problems raised in the above-mentioned background technology. The present invention provides a clamping effect by placing the battery aluminum cover plate in the middle of two clamps, and performs vertical flushing from both sides with the help of a flushing mechanism, thereby improving the stability during the flushing process, and in conjunction with the driving of the two clamps, the two flushing stations can be alternately transferred to the flushing mechanism, so that the loading, unloading and flushing processes can be completed synchronously, thereby improving the efficiency of large-scale flushing, and the discharge process can also be quickly completed in the clamping state during the movement process.

[0005] To achieve the above object, the present invention is implemented by the following technical solutions: A high-pressure flushing device for a battery aluminum cover plate, comprising a flushing device body, the flushing device body includes a cleaning table, a flushing mechanism, a first fixture and a second fixture. A water injection pipe is inserted on the side of the cleaning table, and a rotating groove is formed in the middle of the surface of the cleaning table. The bottom of the flushing mechanism is integrally formed with a rotating sleeve, and the flushing mechanism is embedded into the rotating groove through the rotating sleeve. A support table is inserted on the surface of the cleaning table, and a central column is integrally formed in the middle of the support table. A first fixture is inserted on both sides of the central column. A connecting rod is welded to the bottom of the first fixture, and a second fixture is welded to the end of the connecting rod. The number of the first fixture and the second fixture is two, and the first fixture and the second fixture cooperate to clamp and fix the battery aluminum cover plate to be flushed. A plurality of high-pressure nozzles are welded on the surface of the flushing mechanism. The angle formed between the high-pressure nozzles and the surface of the battery aluminum cover plate is an acute angle, and the flushing mechanism is symmetrically installed on both sides of the first fixture and the second fixture.

[0006] Further, the cleaning table includes a bottom plate and a sliding seat. A side baffle is integrally formed on one end surface of the bottom plate. An electric telescopic rod is screwed on the surface of the side baffle. A chute is formed in the middle of the bottom plate, and the electric telescopic rod is parallel to the middle of the chute.

[0007] Further, the top and bottom of the chute are in a through state. A slider is integrally formed at the bottom of the sliding seat, and a telescopic channel is formed inside the sliding seat. The sliding block is integrally embedded into the chute, and a discharge sandwich layer is formed in the middle of the sliding seat.

[0008] Further, the discharge sandwich layer is aligned with the chute part at the bottom. The end of the electric telescopic rod is embedded into the telescopic channel, and the end of the electric telescopic rod is screwed to one end of the inner wall of the telescopic channel. The battery aluminum cover plate passes through the discharge sandwich layer and the inside of the chute in sequence and then discharges downward.

[0009] Further, the flushing mechanism includes a diversion pipeline and a high-pressure nozzle. A gear is welded on the surface of the diversion pipeline. A rotating sleeve is integrally formed at the bottom of the diversion pipeline, and a plugging column is inserted on the side of the rotating sleeve.

[0010] Further, a contraction spring is welded to the rear end of the plugging column. Plugging holes are formed on the inner wall of the rotating groove, and the number of plugging holes in each rotating groove is two. After the water injection pipe is inserted into the rotating groove, it is sequentially communicated with the inside of the rotating sleeve and the diversion pipeline. The plugging column is embedded into one of the plugging holes after being impacted by high-pressure water flow.

[0011] Further, the first fixture includes a spring rod and an inner clamping plate. One end of the spring rod is welded to the surface of the inner clamping plate, and the other end of the spring rod is inserted into the surface of the central column. A second extension plate is welded to the side of the inner clamping plate, and a connecting rod is welded to the side of the second extension plate.

[0012] Further, a switching convex tooth is welded to the side of the platform, and the switching convex tooth is used for docking and meshing with the gear. The bottom of the inner clamping plate presses on the surface of the platform, and a notch is formed inside the platform.

[0013] Further, the second fixture includes an end plate and an outer clamping plate. A vertical plate is welded to the bottom of the end plate, and the bottom of the vertical plate is welded to the top of the sliding seat. A supporting plate is integrally formed on one side of the bottom of the end plate, and a guiding hole is formed on the surface of the end plate.

[0014] Further, a guiding rod is welded to the surface of the outer clamping plate. Feeding inclined plates are welded to the tops of both the outer clamping plate and the inner clamping plate. A gap is formed at the bottom of the feeding inclined plate. First extension plates are welded to both sides of the bottom of the outer clamping plate. The other end of the connecting rod is welded to the surface of the first extension plate, and an elastic ring is welded in the middle of the connecting rod. The bottom of the outer clamping plate presses on the surface of the supporting plate.

[0015] Advantages of the present invention:

[0016] 1. By placing the battery aluminum cover plate between the two fixtures, the battery aluminum cover plate high-pressure flushing device provides a clamping effect by means of the abutting function provided by the first fixture and the second fixture. After clamping, vertical flushing can be directly carried out from both sides by means of the flushing mechanism, which improves the stability during the flushing process. Moreover, the water flow during flushing always maintains a symmetrical and inclined impact angle, which can divert the sewage.

[0017] 2. By coordinating with the driving of the two fixtures, the battery aluminum cover plate high-pressure flushing device can alternately move the two flushing stations into the flushing mechanism. Therefore, in the two flushing stations, the processes of loading, unloading, and flushing can be synchronously completed, which improves the efficiency of large-batch flushing and shortens the interval time between two workpieces.

[0018] 3. After the flushing mechanism finishes flushing, the first fixture can be directly triggered, so that after the first fixture releases the extrusion effect with the second fixture, it can quickly pull the battery aluminum cover plate after flushing towards one side, thus automatically realizing the discharging process. Therefore, during the movement, the discharging process can also be quickly completed in the clamped state, eliminating the loading and unloading time occupied by the clamping process. Description of the drawings

[0019] Figure 1This is a schematic structural diagram of the external shape of a high-pressure flushing device for a battery aluminum cover plate according to the present invention;

[0020] Figure 2 This is a schematic structural diagram of the cleaning table part of the present invention;

[0021] Figure 3 This is a bottom split view of the flushing mechanism of the present invention;

[0022] Figure 4 This is a schematic structural diagram of the fixture part of the present invention;

[0023] Figure 5 This is a schematic structural diagram of the end plate part of the present invention;

[0024] Figure 6 This is a schematic structural diagram of the outer clamping plate part of the present invention;

[0025] Figure 7 This is a schematic structural diagram of the first fixture part of the present invention;

[0026] In the figure: 1. Cleaning table; 2. Flushing mechanism; 3. First fixture; 4. Second fixture; 5. Bottom plate; 6. Side baffle; 7. Electric telescopic rod; 8. Slide groove; 9. Water injection pipeline; 10. Rotating sleeve; 11. Gear; 12. Diversion pipeline; 13. High-pressure nozzle; 14. Compression spring; 15. Insertion column; 16. Rotating groove; 17. Insertion hole; 18. Sliding seat; 19. Slide block; 20. Telescopic channel; 21. Discharge sandwich; 22. Vertical plate; 23. End plate; 24. Guide hole; 25. Support plate; 26. Outer clamping plate; 27. Feeding inclined plate; 28. Guide rod; 29. First extension plate; 30. Connecting rod; 31. Central column; 32. Support table; 33. Notch; 34. Spring rod; 35. Inner clamping plate; 36. Gap; 37. Switching convex tooth; 38. Second extension plate; 39. Elastic ring. Detailed implementation manners

[0027] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0028] Please refer to Figures 1 to 7, the present invention provides the following technical solution: A high-pressure flushing device for battery aluminum covers, including a flushing device body. The flushing device body includes a cleaning table 1, a flushing mechanism 2, a first fixture 3, and a second fixture 4. A water injection pipe 9 is inserted on the side of the cleaning table 1, and a rotating groove 16 is opened at the middle position of the surface of the cleaning table 1. An integrally formed rotating sleeve 10 is provided at the bottom of the flushing mechanism 2, and the flushing mechanism 2 is embedded into the inside of the rotating groove 16 through the rotating sleeve 10. A support table 32 is inserted on the surface of the cleaning table 1. A central column 31 is integrally formed in the middle of the support table 32. The first fixtures 3 are inserted on both sides of the central column 31. A connecting rod 30 is welded to the bottom of the first fixture 3, and a second fixture 4 is welded to the end of the connecting rod 30. The number of the first fixtures 3 and the second fixtures 4 is two, and the first fixture 3 and the second fixture 4 cooperate to clamp and fix the battery aluminum cover to be flushed. A plurality of high-pressure nozzles 13 are welded to the surface of the flushing mechanism 2. The angle formed between the high-pressure nozzles 13 and the surface of the battery aluminum cover is an acute angle, and the flushing mechanism 2 is installed on both sides of the first fixture 3 and the second fixture 4 in a symmetric form. This high-pressure flushing device is used to flush and clean both sides of a rectangular battery aluminum cover.

[0029] When the present invention is in use, in the initial state, a part of the sliding seat 18 at the top moves to one end of the cleaning table 1, and one of the battery aluminum covers is placed in the first fixture 3 and the second fixture 4 on one side of the central column 31. With the help of this set of fixture structures, the battery aluminum cover is clamped and fixed. Then, the electric telescopic rod 7 at the bottom can be started to control the sliding seat 18 to move along the cleaning table 1. During the movement of the cleaning table 1, it will pass through the inside of the two flushing mechanisms 2. When passing through, the flushing mechanisms 2 can be used to simultaneously provide a high-pressure water flow impact effect on both sides of the clamped battery aluminum cover, so as to achieve the purpose of cleaning. Until the middle area of the sliding seat 18 moves to a position close to the flushing mechanism 2, at this time, as Figure 1 shown in the figure, the side of the first fixture 3 can be directly impacted by the flushing mechanism 2, so as to release the clamping effect on the flushed battery aluminum cover by means of this impact effect, and further directly push the first fixture 3 and the second fixture 4 during the impact process until the battery aluminum cover is pulled and discharged downward from the discharge sandwich layer 21 area at the bottom. Then, water injection can be notified, and another battery aluminum cover can be placed in the working position at the other end of the sliding seat 18 during the above flushing process. As the sliding seat 18 moves further, the automatic rotation process of the flushing mechanism 2 can be realized, so as to ensure that when the sliding seat 18 is pulled back later, the second battery aluminum cover can be pulled in the reverse direction and the same flushing and cleaning process can be completed.

[0030] In this embodiment, the cleaning table 1 includes a bottom plate 5 and a sliding seat 18. One end surface of the bottom plate 5 is integrally formed with a side baffle 6. An electric telescopic rod 7 is screwed on the surface of the side baffle 6. A chute 8 is formed in the middle of the bottom plate 5. The electric telescopic rod 7 and the chute 8 are parallel to each other. The top and bottom of the chute 8 are in a through state. The bottom of the sliding seat 18 is integrally formed with a slider 19, and a telescopic channel 20 is formed inside the sliding seat 18. The whole sliding block is embedded inside the chute 8. A discharge sandwich layer 21 is formed in the middle of the sliding seat 18. The discharge sandwich layer 21 is partially aligned with the chute 8 at the bottom. The end of the electric telescopic rod 7 is embedded inside the telescopic channel 20, and the end of the electric telescopic rod 7 is screwed to one end of the inner wall of the telescopic channel 20. The battery aluminum cover plate passes through the discharge sandwich layer 21 and the inside of the chute 8 in sequence and then is discharged downward. Specifically, the sliding seat 18 is always partially embedded inside the chute 8 through the sliders 19 at both ends of the bottom. Therefore, after starting the electric telescopic rod 7, the whole sliding seat 18 can be directly controlled to perform a reciprocating translation movement along the surface of the bottom plate 5. After completing a round-trip movement, the flushing process of two battery aluminum cover plates can be realized.

[0031] In this embodiment, the flushing mechanism 2 includes a diversion pipeline 12 and a high-pressure nozzle 13. A gear 11 is welded on the surface of the diversion pipeline 12. A rotating sleeve 10 is integrally formed at the bottom of the diversion pipeline 12. A plugging column 15 is inserted on the side of the rotating sleeve 10. A contraction spring 14 is welded at the rear end of the plugging column 15. Plugging holes 17 are formed on the inner wall of the rotating groove 16, and the number of plugging holes 17 in each rotating groove 16 is two. After the water injection pipeline 9 is inserted into the rotating groove 16, it is connected to the inside of the rotating sleeve 10 and the diversion pipeline 12 in sequence. The plugging column 15 is embedded into one of the plugging holes 17 after being impacted by high-pressure water flow. With the driving of two jigs, the two flushing stations can be alternately moved into the flushing mechanism 2. Therefore, in the two flushing stations, the processes of loading, unloading and flushing can be completed synchronously, improving the efficiency of large-batch flushing and shortening the interval time between two workpieces.

[0032] Specifically, high-pressure water flow is injected into the rotating sleeve 10 inside the rotating groove 16 through the water injection pipe 9. When there is high-pressure water flow, in addition to entering the diversion pipe 12 along the rotating sleeve 10 and then rushing out toward the side along the high-pressure nozzle 13, it will also embed the plug post 15 on the side of the rotating sleeve 10 into the inside of the plug hole 17. At this time, the entire rotating sleeve 10 and the diversion pipe 12 can be locked, thus avoiding the slight rotation of the entire flushing mechanism 2 caused by the high-pressure nozzle 13 during the subsequent flushing of both sides of the battery aluminum cover plate. Therefore, the stable effect of the entire flushing mechanism 2 is achieved. When translating through the sliding seat 18, when the gear 11 is moved to the position of the switching convex tooth 37, by stopping the water injection, the impact of the high-pressure water flow can be eliminated. At this time, with the help of the compression spring 14, the plug post 15 can be directly pulled back into the inside of the rotating sleeve 10. After the gear 11 moves past the switching convex tooth 37 in this state, the purpose of rotating the entire flushing mechanism 2 can be achieved by means of the meshing effect.

[0033] In this embodiment, the first fixture 3 includes a spring rod 34 and an inner clamping plate 35. One end of the spring rod 34 is welded to the surface of the inner clamping plate 35, and the other end of the spring rod 34 is inserted into the surface of the central column 31. A second extension plate 38 is welded to the side of the inner clamping plate 35, and a connecting rod 30 is welded to the side of the second extension plate 38. A switching convex tooth 37 is welded to the side of the support table 32, and the switching convex tooth 37 is used for docking and meshing with the gear 11. The bottom of the inner clamping plate 35 presses on the surface of the support table 32, and a notch 33 is formed inside the support table 32. By placing the battery aluminum cover plate between the two fixtures and relying on the top-holding function provided by the first fixture 3 and the second fixture 4, the clamping effect can be provided. After clamping, vertical flushing can be directly performed from both sides by means of the flushing mechanism 2, improving the stability during the flushing process. Moreover, the water flow during flushing always maintains a symmetrical and inclined impact angle, which can divert the sewage.

[0034] In this embodiment, the second fixture 4 includes an end plate 23 and an outer clamping plate 26. A vertical plate 22 is welded to the bottom of the end plate 23, and the bottom of the vertical plate 22 is welded to the top of the sliding seat 18. A support plate 25 is integrally formed on one side of the bottom of the end plate 23, and a guide hole 24 is formed on the surface of the end plate 23. A guide rod 28 is welded to the surface of the outer clamping plate 26. Feeding inclined plates 27 are welded to the tops of both the outer clamping plate 26 and the inner clamping plate 35. A gap 36 is formed at the bottom of the feeding inclined plate 27. First extension plates 29 are welded to both sides of the bottom of the outer clamping plate 26. The other end of the connecting rod 30 is welded to the surface of the first extension plate 29, and an elastic ring 39 is welded in the middle of the connecting rod 30. The bottom of the outer clamping plate 26 presses on the surface of the support plate 25. After the rinsing mechanism 2 finishes rinsing, the first fixture 3 can be directly triggered, so that after the first fixture 3 and the second fixture 4 release the extrusion effect, the rinsed battery aluminum cover plate can be quickly pulled to one side, thus automatically realizing the discharging process. Therefore, during the moving process, the discharging process can also be quickly completed in the clamped state, eliminating the loading and unloading time occupied during the clamping process.

[0035] Specifically, when the battery aluminum cover plate is placed inside the fixture, it will first pass through the feeding inclined plate 27 at the top and the gap 36 area at the bottom, and then the inner clamping plate 35 is pushed by the spring rod 34 to move towards the outer clamping plate 26. At this time, the battery aluminum cover plate can be clamped and fixed by means of the two clamping plates for high-pressure rinsing. Subsequently, when the high-pressure water flow impacts the area of the inner clamping plate 35, the connecting rod 30 can be pulled by the second extension plate 38 at the bottom of the inner clamping plate 35. At this time, the elastic ring 39 stretches, releasing the clamping effect on the battery aluminum cover plate. Subsequently, the inner clamping plate 35 continues to be impacted and moves, and the spring rod 34 is compressed. Since the buffering distance provided by the elastic ring 39 is short, the outer clamping plate 26 can be pulled to move by the connecting rod 30 at this time until the battery aluminum cover plate pressing on the support table 32 is moved out of the area of the support table 32, and then it falls downward from the inside of the bottom discharging sandwich layer 21 and the chute 8.

[0036] The foregoing shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms.

[0037] 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 high-pressure washing device for battery aluminum cover, comprising a washing device body, characterized in that: The flushing device body comprises a cleaning table (1), a flushing mechanism (2), a first fixture (3) and a second fixture (4); a water injection pipe (9) is inserted on the side of the cleaning table (1), and a rotating groove (16) is provided in the middle of the surface of the cleaning table (1); a rotating sleeve (10) is integrally formed at the bottom of the flushing mechanism (2), and the flushing mechanism (2) is embedded in the rotating groove (16) through the rotating sleeve (10); a support table (32) is inserted on the surface of the cleaning table (1), a central column (31) is integrally formed in the middle of the support table (32), and two sides of the central column (31) are inserted A first clamp (3) is provided, a connecting rod (30) is welded to the bottom of the first clamp (3), a second clamp (4) is welded to the end of the connecting rod (30), the first clamp (3) and the second clamp (4) are provided in two pieces, and the first clamp (3) and the second clamp (4) are used together to clamp and fix the battery aluminum cover plate to be flushed, a plurality of high-pressure nozzles (13) are welded to the surface of the flushing mechanism (2), an acute angle is formed between the high-pressure nozzles (13) and the surface of the battery aluminum cover plate, and the flushing mechanism (2) is symmetrically installed on both sides of the first clamp (3) and the second clamp (4).

2. A battery aluminum cover plate high-pressure washing device according to claim 1, characterized in that: The cleaning table (1) comprises a bottom plate (5) and a sliding seat (18); a side baffle (6) is integrally formed on one end surface of the bottom plate (5); an electric telescopic rod (7) is screwed onto the surface of the side baffle (6); a slide groove (8) is provided in the middle of the bottom plate (5); and the electric telescopic rod (7) and the middle of the slide groove (8) are parallel to each other.

3. A battery aluminum cover plate high-pressure washing device according to claim 2, characterized in that: The top and bottom of the slide groove (8) are in a through-state, the bottom of the sliding seat (18) is integrally formed with a slider (19), and a telescopic channel (20) is provided inside the sliding seat (18), the sliding block is integrally embedded in the slide groove (8), and a discharge interlayer (21) is provided in the middle of the sliding seat (18).

4. A battery aluminum cover plate high-pressure washing device according to claim 3, characterized in that: The discharge interlayer (21) is aligned with the bottom chute (8), the end of the electric telescopic rod (7) is embedded in the telescopic channel (20), and the end of the electric telescopic rod (7) is screwed to one end of the inner wall of the telescopic channel (20), and the battery aluminum cover plate passes through the discharge interlayer (21) and the chute (8) in sequence and is discharged downward.

5. The high-pressure washing equipment for battery aluminum cover according to claim 2 is characterized in that: The flushing mechanism (2) comprises a guide pipe (12) and a high-pressure nozzle (13); a gear (11) is welded on the surface of the guide pipe (12); a rotating sleeve (10) is integrally formed at the bottom of the guide pipe (12); and a plug-in column (15) is inserted into the side of the rotating sleeve (10).

6. A battery aluminum cover plate high-pressure washing device according to claim 5, characterized in that: A contraction spring (14) is welded to the rear end of the plug-in column (15); a plug-in hole (17) is provided on the inner wall of the rotating groove (16); and the number of the plug-in holes (17) in each rotating groove (16) is two; after the water injection pipe (9) is inserted into the interior of the rotating groove (16), it is sequentially connected to the interior of the rotating sleeve (10) and the guide pipe (12); and the plug-in column (15) is embedded in one of the plug-in holes (17) after being impacted by a high-pressure water flow.

7. The high-pressure washing equipment for battery aluminum cover according to claim 5 is characterized in that: The first clamp (3) comprises a spring rod (34) and an inner clamp (35), one end of the spring rod (34) is welded to the surface of the inner clamp (35), the other end of the spring rod (34) is inserted into the surface of the center column (31), a second extension plate (38) is welded to the side of the inner clamp (35), and a connecting rod (30) is welded to the side of the second extension plate (38).

8. The high-pressure washing equipment for battery aluminum cover according to claim 7 is characterized in that: A switching cam (37) is welded on the side of the support platform (32), and the switching cam (37) is used to engage with the gear (11). The bottom of the inner clamping plate (35) is pressed on the surface of the support platform (32), and a notch (33) is opened on the inner side of the support platform (32).

9. The high-pressure washing equipment for battery aluminum cover according to claim 7, characterized in that: The second clamp (4) comprises an end plate (23) and an outer clamping plate (26), the bottom of the end plate (23) is welded with a vertical plate (22), the bottom of the vertical plate (22) is welded to the top of the sliding seat (18), a support plate (25) is integrally formed on one side of the bottom of the end plate (23), and a guide hole (24) is opened on the surface of the end plate (23).

10. A battery aluminum cover plate high-pressure washing device according to claim 9, characterized in that: A guide rod (28) is welded to the surface of the outer clamping plate (26), and a feed ramp (27) is welded to the top of the outer clamping plate (26) and the inner clamping plate (35). A gap (36) is provided at the bottom of the feed ramp (27). First extension plates (29) are welded to both sides of the bottom of the outer clamping plate (26), and the other end of the connecting rod (30) is welded to the surface of the first extension plate (29), and an elastic ring (39) is welded in the middle of the connecting rod (30). The bottom of the outer clamping plate (26) is pressed against the surface of the support plate (25).

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