A laser marking machine

Abstract

The present invention relates to the field of laser marking, and in particular to a laser marking machine, comprising a pedestal, a stand fixedly mounted at the upper side edge of the pedestal, a laser marking assembly fixedly mounted at the upper end of the stand, a ring seat elastically mounted near the rear edge of the upper end of the pedestal, a bearing ring coaxially mounted inside the ring seat, a limiter mounted inside the bearing ring, a gear ring coaxially fixedly mounted at the rear of the outer surface of the bearing ring, a gear connected to the upper part of the ring seat, the gear meshing with the gear ring, a pusher mounted at the upper rear edge of the pedestal, a toothed plate meshing at the upper part of the gear, the toothed plate connected to the pusher. The present invention effectively reduces the labor intensity of workers, while ensuring the quality of laser marking, and also ensuring the normal flipping operation of the square workpiece.

Description

Technical Field

[0001] The invention relates to the field of laser marking, and in particular to a laser marking machine. Background Art

[0002] Laser marking technology is one of the largest application areas of laser processing. Laser marking is a marking method that uses high-energy-density lasers to partially irradiate the workpiece, causing the surface material to vaporize or undergo a chemical reaction that changes color, thereby leaving a permanent mark. Laser marking can produce a variety of text, symbols, and patterns, and the character size can range from millimeters to microns, which is of special significance for product anti-counterfeiting. However, when the existing laser marking machine marks the adjacent two sides of some square workpieces, after one side is marked, the worker needs to manually flip the workpiece to adjust the position before marking the other side. The long-term flipping can easily cause soreness in the worker's arm, greatly increasing the worker's labor intensity. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a laser marking machine.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a laser marking machine, including a pedestal, a stand fixedly installed at the upper side edge of the pedestal, a laser marking assembly fixedly installed at the upper end of the stand, a ring seat elastically installed at the upper end of the pedestal near the rear edge, a bearing ring is coaxially rotatably installed inside the ring seat, a limiting member is installed inside the bearing ring, a gear ring is coaxially fixedly installed on the rear part of the outer surface of the bearing ring, a gear is connected to the upper part of the ring seat, the gear is meshed with the gear ring, a pushing member is installed at the upper rear edge of the pedestal, a gear is meshed with a toothed plate on the upper part of the gear, and the toothed plate is connected to the pushing member.

[0005] Preferably, two guide rods are symmetrically fixedly installed on the lower end of the ring seat, a guide sleeve is fitted on the lower part of the outer surface of the guide rod, the guide sleeve is connected to the base, a tensioning spring is wound around the outer side of the guide rod, the upper end of the tensioning spring is fixed to the ring seat, and the lower end of the tensioning spring is fixed to the upper end of the guide sleeve.

[0006] Preferably, two fixing ears are symmetrically fixedly installed on the outer surface of the guide sleeve, and the ends of the fixing ears are fixed to the base. An anti-drop cap is coaxially inlaid on the lower part of the outer surface of the guide rod, and the anti-drop cap is attached to the lower end of the guide sleeve. A through groove is opened on the upper end surface of the base, and the through groove is located directly below the guide rod.

[0007] Preferably, the limiting member includes four positioning claws arranged in a square array inside the carrying ring, and the opposite ends of the four positioning claws are fixedly installed with fixing frames, and the ends of the fixing frames are fixed to the inner wall of the carrying ring. The front ends of the four positioning claws are arranged in an arc shape, and the rear ends of the two positioning claws located above and below are extended with L-shaped positioning ears, and the two L-shaped positioning ears are symmetrically arranged.

[0008] Preferably, the pushing member includes two support frames symmetrically fixedly installed at the upper rear edge of the pedestal, a bearing frame is fixedly installed between the upper ends of the two support frames, a servo push cylinder is fixedly installed on the upper end of the bearing frame, the output end of the servo push cylinder is connected to a pushing sleeve, and the pushing sleeve is connected to the tooth plate.

[0009] Preferably, a T-shaped guide seat No. 1 is extended from the front end face of the carrier frame, and the push sleeve is slidably installed on the outer surface of the T-shaped guide seat No. 1. Two guide columns are symmetrically fixedly installed on the upper end of the tooth plate. A guide sleeve is fitted on the outer surface of the guide column, and the guide sleeve is fixed to the front end of the push sleeve. The upper end of the guide column is coaxially inlaid with a limiting cap.

[0010] Preferably, two connecting frames are symmetrically fixedly installed at the front end of the pushing sleeve, and the connecting frames are staggered with the guide sleeve. A pressing guide rail is fixedly installed at the end of the connecting frame, one end of the pressing guide rail is higher than the other end of the pressing guide rail, and the middle part of the pressing guide rail is arranged in an arc shape. An extension seat extends from the middle part of the upper end of the ring seat, and an L-shaped frame is fixedly installed on the upper end of the extension seat, and a pressing wheel is installed at the end of the L-shaped frame, and the pressing wheel is fitted to one end of the pressing guide rail.

[0011] Preferably, a wheel axle is coaxially installed inside the pressing wheel, and the end of the wheel axle is inserted into the end of the L-shaped frame, a connecting shaft is coaxially embedded inside the extending seat, and the gear is coaxially rotatably installed on the end of the connecting shaft, and two fixing columns are symmetrically fixedly installed on the upper end of the ring seat, and the extending seat is located between the two fixing columns, and a No. 2 T-shaped guide seat is fixedly installed between the upper ends of the two fixing columns, and the No. 2 T-shaped guide seat is located above the extending seat, and the toothed plate is slidably installed on the No. 2 T-shaped guide seat, and a connecting ring is coaxially fixedly installed on the output end of the servo push cylinder, and a connecting frame is fixedly installed on the outer surface of the connecting ring, and the end of the connecting frame is fixed to the pushing sleeve, and a reinforcing frame is obliquely fixedly installed on the side of the connecting frame, and the end of the reinforcing frame is fixed to the pushing sleeve.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The moving push sleeve can drive the tooth plate to move, and then drive the gear to rotate, so that the gear ring meshing with the gear can rotate, thereby driving the square workpiece in the carrying ring to flip 90 degrees, so as to turn the square workpiece over, so that it can mark the adjacent two sides of the square workpiece. The process does not require workers to manually flip over, thereby effectively reducing the labor intensity of workers. In addition, when the push sleeve moves to drive the square workpiece to flip over, it will also simultaneously drive the pressing guide rail to move, so that the pressing wheel can roll on the pressing guide rail, so that the pressing wheel can be pressed through the pressing guide rail, so that the ring seat and the carrying ring can move downward, thereby driving the square workpiece to move downward, so that the marked surface of the square workpiece can be marked at the normal marking distance of the laser marking component after flipping, so as to avoid the phenomenon that the marking surface of the square workpiece moves up after flipping and is too close to the laser marking component, resulting in unclear marking after marking, thereby ensuring the quality of its laser marking.

[0014] 2. When the pressing guide rail presses the pressing wheel to move the ring seat and the load-bearing ring downward, the tooth plate will move downward synchronously under the guidance of the No. 2 T-shaped guide seat, so that the tooth plate and the gear will always remain in a meshing state. At this time, the guide column slides in the guide sleeve to adapt to the downward movement of the tooth plate, so that the pushing sleeve can always push the tooth plate during the downward movement of the tooth plate, so as to ensure that the tooth plate can always be driven by the pushing sleeve to move to drive the square workpiece to flip over, thereby ensuring that the flipping operation of the square workpiece is carried out normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a laser marking machine of the present invention;

[0016] Figure 2 A laser marking machine according to the present invention Figure 1 A magnified view of middle;

[0017] Figure 3 It is a schematic diagram of a carrying ring of a laser marking machine of the present invention;

[0018] Figure 4 A laser marking machine according to the present invention Figure 1 Enlarged view of middle B;

[0019] Figure 5 It is a schematic diagram of the gear of a laser marking machine of the present invention;

[0020] Figure 6 This is a usage view of a laser marking machine of the present invention.

[0021] In the figure: 1. pedestal; 2. stand; 3. laser marking assembly; 4. support frame; 5. load-bearing ring; 6. positioning claw; 7. servo push cylinder; 8. guide column; 9. guide sleeve; 10. No. 1 T-shaped guide seat; 11. load-bearing frame; 12. connecting frame; 13. pressing guide rail; 14. ring seat; 15. extending seat; 16. pressing wheel; 17. axle; 18. L-shaped frame; 19. No. 2 T-shaped guide seat; 20. connecting frame; 21. reinforcement frame; 22. pushing sleeve; 23. tooth plate; 24. limiting cap; 25. fixing column; 26. tooth ring; 27. L-shaped positioning ear; 28. fixing frame; 29. ​​connecting shaft; 30. through groove; 31. fixing ear; 32. guide sleeve; 33. anti-drop cap; 34. tightening spring; 35. guide rod; 36. connecting ring; 37. gear; 38. square workpiece. DETAILED DESCRIPTION

[0022] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0023] like Figure 1-Figure 6 A laser marking machine shown in the figure comprises a pedestal 1, a stand 2 is fixedly mounted at the upper side edge of the pedestal 1, the stand 2 serves to support and fix the laser marking component 3, the upper end of the stand 2 is fixedly mounted with the laser marking component 3, because the laser marking technology is a prior art and has been widely used, the laser marking component 3 is not described in detail here, a ring seat 14 is elastically mounted near the rear edge of the upper end of the pedestal 1, a bearing ring 5 is coaxially mounted inside the ring seat 14, the ring seat 14 serves to connect the bearing ring 5, and the bearing ring 5 is internally mounted with a limited position A gear ring 26 is coaxially fixedly installed on the rear part of the outer surface of the carrying ring 5, and a gear 37 is connected to the upper part of the ring seat 14. The gear 37 plays a transmission role. The gear 37 meshes with the gear ring 26. A pushing member is installed at the rear edge of the upper end of the platform 1. The upper part of the gear 37 meshes with a toothed plate 23, and the toothed ring 26 and the toothed plate 23 are connected to the pushing member. The toothed plate 23 moves, which can drive the gear 37 to rotate, so that the gear ring 26 meshing with the gear 37 can rotate, thereby driving the square workpiece 38 in the carrying ring 5 to flip ninety degrees to turn the square workpiece 38 over.

[0024] Two guide rods 35 are symmetrically fixedly installed at the lower end of the ring seat 14, and a guide sleeve 32 is fitted on the lower part of the outer surface of the guide rods 35. The guide rods 35 and the guide sleeve 32 play a role in vertically guiding the ring seat 14. The guide sleeve 32 is connected to the base 1, and a tensioning spring 34 is wound around the outer side of the guide rods 35. The upper end of the tensioning spring 34 is fixed to the ring seat 14. The tensioning spring 34 can support the ring seat 14 so that the pressing wheel 16 on the ring seat 14 can always be in contact with the pressing guide rail 13, and the lower end of the tensioning spring 34 is fixed to the upper end of the guide sleeve 32.

[0025] Two fixing ears 31 are symmetrically fixedly installed on the outer surface of the guide sleeve 32. The ends of the fixing ears 31 are fixed to the base 1. The fixing ears 31 play a role in fixing the guide sleeve 32. The lower part of the outer surface of the guide rod 35 is coaxially inlaid with an anti-drop cap 33. The anti-drop cap 33 plays a role in preventing the guide rod 35 and the guide sleeve 32 from separating. The anti-drop cap 33 fits the lower end of the guide sleeve 32. The upper end surface of the base 1 is provided with a through groove 30. The through groove 30 plays a role in allowing the guide rod 35 to have enough space to move. The through groove 30 is located directly below the guide rod 35.

[0026] The limiting member includes four positioning claws 6 arranged in a square array inside the carrying ring 5. The positioning claws 6 can limit the square workpiece 38 so that the center line of the square workpiece 38 can be colinear with the center line of the carrying ring 5, so that after the square workpiece 38 is flipped, the middle of the marked surface can still be marked directly below the laser marking component 3. The opposite ends of the four positioning claws 6 are fixedly installed with a fixing frame 28. The end of the fixing frame 28 is fixed to the inner wall of the carrying ring 5. The fixing frame 28 plays a role in fixing the positioning claws 6. The front end portions of the four positioning claws 6 are all arc-shaped, which can facilitate the placement of the square workpiece 38. The rear ends of the two positioning claws 6 located at the upper and lower parts are extended with L-shaped positioning ears 27. The two L-shaped positioning ears 27 are symmetrically arranged. The L-shaped positioning ears 27 can limit the square workpiece 38 so that the middle part of the square workpiece 38 can correspond to the bottom of the laser marking component 3, and the end cross-section of the square workpiece 38 is rectangular.

[0027] The pushing member includes two support frames 4 symmetrically fixedly installed at the upper rear edge of the pedestal 1, a bearing frame 11 is fixedly installed between the upper ends of the two support frames 4, the support frames 4 play a role of supporting and fixing the bearing frames 11, a servo push cylinder 7 is fixedly installed on the upper end of the bearing frame 11, the bearing frame 11 plays a role of supporting the servo push cylinder 7, the output end of the servo push cylinder 7 is connected to a pushing sleeve 22, the servo push cylinder 7 plays a role of driving the pushing sleeve 22 to move, and the pushing sleeve 22 is connected to the tooth plate 23.

[0028] A No. 1 T-shaped guide seat 10 is extended from the front end face of the carrier 11, and a push sleeve 22 is slidably mounted on the outer surface of the No. 1 T-shaped guide seat 10, and the No. 1 T-shaped guide seat 10 plays a role in guiding the push sleeve 22. Two guide posts 8 are symmetrically fixedly mounted on the upper end of the tooth plate 23, and a guide sleeve 9 is fitted on the outer surface of the guide post 8. The guide post 8 and the guide sleeve 9 can guide the tooth plate 23. The guide sleeve 9 is fixed to the front end of the push sleeve 22, and the upper end of the guide post 8 is coaxially inlaid with a limiting cap 24, which prevents the guide post 8 from The function of separating from the guide sleeve 9 is that when the pressing guide rail 13 presses the pressing wheel 16 to move the ring seat 14 and the carrying ring 5 downward, the tooth plate 23 will move downward synchronously under the guidance of the No. 2 T-shaped guide seat 19, so that the tooth plate 23 and the gear 37 always remain in a meshing state. At this time, the guide column 8 slides in the guide sleeve 9 to adapt to the downward movement of the tooth plate 23, so that the tooth plate 23 can always push the pushing sleeve 22 to push the tooth plate 23 during the downward movement, so as to ensure that the tooth plate 23 can always be driven by the pushing sleeve 22 to move to turn over the square workpiece 38.

[0029] Two connecting frames 12 are symmetrically fixedly installed at the front end of the pushing sleeve 22. The connecting frames 12 are staggered with the guide sleeve 9. The connecting frames 12 play the role of fixing the pressing guide rail 13. The pressing guide rail 13 is fixedly installed at the end of the connecting frame 12. One end of the pressing guide rail 13 is higher than the other end of the pressing guide rail 13. The middle part of the pressing guide rail 13 is arranged in an arc shape, which can press the pressing wheel 16. The middle part of the upper end of the ring seat 14 extends with a protruding seat 15. The protruding seat 15 plays the role of connecting the L-shaped frame 18 and the connecting shaft 29. The protruding seat 1 5 is fixedly mounted with an L-shaped frame 18 at the upper end thereof, and the L-shaped frame 18 serves to connect the pressing wheel 16. The pressing wheel 16 is mounted at the end of the L-shaped frame 18, and the pressing wheel 16 is attached to one end of the pressing guide rail 13. When the pressing wheel 16 is attached to one end of the pressing guide rail 13, the marked surface of the square workpiece 38, i.e., the upper end surface, is just at the normal marking distance of the laser marking component 3. When the pressing wheel 16 is attached to the other end of the pressing guide rail 13, the marked surface of the square workpiece 38, i.e., the side surface, is just at the normal marking distance of the laser marking component 3.

[0030] The inside of the pressing wheel 16 is coaxially penetrated by an axle 17, and the end of the axle 17 is penetrated and embedded in the end of the L-shaped frame 18. The axle 17 serves to connect the pressing wheel 16. The inside of the extending seat 15 is coaxially embedded with a connecting shaft 29. The gear 37 is coaxially rotatably installed on the end of the connecting shaft 29. The connecting shaft 29 serves to connect the gear 37. Two fixed columns 25 are symmetrically fixedly installed on the upper end of the ring seat 14. The extending seat 15 is located between the two fixed columns 25. A second T-shaped guide seat 19 is fixedly installed between the upper ends of the two fixed columns 25. The second T-shaped guide seat 19 is located above the extending seat 15. The fixed column 25 5 plays a role in fixing the No. 2 T-shaped guide seat 19. The tooth plate 23 is slidably installed on the No. 2 T-shaped guide seat 19. The No. 2 T-shaped guide seat 19 plays a role in allowing the tooth plate 23 and the gear 37 to always be meshed. The output end of the servo push cylinder 7 is coaxially fixedly installed with a connecting ring 36. The outer surface of the connecting ring 36 is fixedly installed with a connecting frame 20. The connecting ring 36 and the connecting frame 20 both play a connecting role. The end of the connecting frame 20 is fixed to the pushing sleeve 22. The side of the connecting frame 20 is obliquely fixedly installed with a reinforcing frame 21. The reinforcing frame 21 plays a role in strengthening the connection. The end of the reinforcing frame 21 is fixed to the pushing sleeve 22.

[0031] During laser marking, the square workpiece 38 is placed between the four positioning claws 6 so that the center line of the square workpiece 38 can be in line with the center line of the carrying ring 5. At this time, the L-shaped positioning ear 27 is attached to the end of the square workpiece 38 to limit the square workpiece 38 so that the middle of the upper end of the square workpiece 38 can correspond to the bottom of the laser marking component 3. Then the laser marking component 3 works to mark the middle of the upper end of the square workpiece 38. After the marking is completed, the servo push cylinder 7 works to drive the push sleeve 22 to move, so as to facilitate The tooth plate 23 is driven to move by the moving push sleeve 22, thereby driving the gear 37 to rotate, so that the gear ring 26 meshing with the gear 37 can rotate, thereby driving the square workpiece 38 in the carrying ring 5 to flip 90 degrees, so as to turn the square workpiece 38 over, so that the middle part of the side of the square workpiece 38 can be marked corresponding to the bottom of the laser marking component 3, thereby completing the marking operation on the adjacent two sides of the square workpiece 38, and when the push sleeve 22 is moving to drive the square workpiece 38 to flip over The pressing guide rail 13 is also driven to move synchronously, so that the pressing wheel 16 can roll on the pressing guide rail 13, so that the pressing wheel 16 can be pressed by the pressing guide rail 13, so that the ring seat 14 and the carrying ring 5 can move downward, thereby driving the square workpiece 38 to move downward, so that the marked surface of the square workpiece 38 can be marked at the normal marking distance of the laser marking component 3 after the square workpiece 38 is turned over, effectively avoiding the marking surface of the square workpiece 38 moving up after the turning over and being too close to the laser marking component 3, resulting in unclear marking after marking. At the same time, when the pressing guide rail 13 presses the pressing wheel 16 to move the ring seat 14 and the carrying ring 5 downward, the tooth plate 23 will move downward synchronously under the guidance of the No. 2 T-shaped guide seat 19, so that the tooth plate 23 and the gear 37 always remain in a meshing state. At this time, the guide column 8 slides in the guide sleeve 9 to adapt to the downward movement of the tooth plate 23, so that the tooth plate 23 can always push the push sleeve 22 to push the tooth plate 23 during the downward movement process, so as to ensure that the tooth plate 23 can always be driven by the push sleeve 22 to move to turn over the square workpiece 38.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A laser marking machine, comprising a pedestal (1), a stand (2) fixedly mounted at the upper side edge of the pedestal (1), a laser marking assembly (3) fixedly mounted at the upper end of the stand (2), characterized in that: A ring seat (14) is elastically mounted near the rear edge of the upper end of the pedestal (1), a bearing ring (5) is coaxially rotatably mounted inside the ring seat (14), a limit member is mounted inside the bearing ring (5), a gear ring (26) is coaxially fixedly mounted on the rear portion of the outer surface of the bearing ring (5), a gear (37) is connected to the upper portion of the ring seat (14), the gear (37) is meshed with the gear ring (26), a pushing member is mounted at the rear edge of the upper end of the pedestal (1), a gear plate (23) is meshed with the upper portion of the gear (37), and the gear plate (23) is connected to the pushing member; The pushing member comprises two support frames (4) symmetrically fixedly mounted at the rear edge of the upper end of the pedestal (1), a bearing frame (11) being fixedly mounted between the upper ends of the two support frames (4), a servo push cylinder (7) being fixedly mounted on the upper end of the bearing frame (11), a push sleeve (22) being connected to the output end of the servo push cylinder (7), and the push sleeve (22) being connected to the toothed plate (23); A T-shaped guide seat (10) is extended from the front end surface of the carrier frame (11), the push sleeve (22) is slidably mounted on the outer surface of the T-shaped guide seat (10), two guide posts (8) are symmetrically fixedly mounted on the upper end of the tooth plate (23), a guide sleeve (9) is fitted on the outer surface of the guide post (8), the guide sleeve (9) is fixed to the front end of the push sleeve (22), and a limiting cap (24) is coaxially embedded on the upper end of the guide post (8); Two connecting frames (12) are symmetrically fixedly installed at the front end of the pushing sleeve (22), the connecting frames (12) and the guide sleeve (9) are staggered, and a pressing guide rail (13) is fixedly installed at the end of the connecting frame (12), one end of the pressing guide rail (13) is higher than the other end of the pressing guide rail (13), and the middle part of the pressing guide rail (13) is arranged in an arc shape. An extension seat (15) extends from the middle part of the upper end of the ring seat (14), and an L-shaped frame (18) is fixedly installed at the upper end of the extension seat (15), and a pressing wheel (16) is installed at the end of the L-shaped frame (18), and the pressing wheel (16) is attached to one end of the pressing guide rail (13).

2. A laser marking machine according to claim 1, characterized in that: Two guide rods (35) are symmetrically fixedly mounted on the lower end of the ring seat (14); a guide sleeve (32) is fitted on the lower part of the outer surface of the guide rod (35); the guide sleeve (32) is connected to the pedestal (1); a tensioning spring (34) is wound around the outer side of the guide rod (35); the upper end of the tensioning spring (34) is fixed to the ring seat (14); and the lower end of the tensioning spring (34) is fixed to the upper end of the guide sleeve (32).

3. A laser marking machine according to claim 2, characterized in that: Two fixing ears (31) are symmetrically fixedly mounted on the outer surface of the guide sleeve (32), and the ends of the fixing ears (31) are fixed to the pedestal (1). An anti-drop cap (33) is coaxially inlaid on the lower part of the outer surface of the guide rod (35), and the anti-drop cap (33) is attached to the lower end of the guide sleeve (32). A through groove (30) is formed on the upper end surface of the pedestal (1), and the through groove (30) is located directly below the guide rod (35).

4. A laser marking machine according to claim 1, characterized in that: The limiting member comprises four positioning claws (6) arranged in a square array inside the carrying ring (5); opposite ends of the four positioning claws (6) are fixedly mounted with fixing frames (28); the ends of the fixing frames (28) are fixed to the inner wall of the carrying ring (5); the front ends of the four positioning claws (6) are arranged in an arc shape; the rear ends of the two positioning claws (6) located at the upper and lower parts are extended with L-shaped positioning ears (27); the two L-shaped positioning ears (27) are symmetrically arranged.

5. The laser marking machine according to claim 1, characterized in that: The pressing wheel (16) is coaxially penetrated by a wheel axle (17), the end of the wheel axle (17) is penetrated and embedded in the end of the L-shaped frame (18), the extension seat (15) is coaxially embedded with a connecting shaft (29), the gear (37) is coaxially rotatably mounted on the end of the connecting shaft (29), the upper end of the ring seat (14) is symmetrically fixed with two fixing columns (25), the extension seat (15) is located between the two fixing columns (25), and a second T-shaped guide seat is fixedly mounted between the upper ends of the two fixing columns (25). (19), the second T-shaped guide seat (19) is located above the extension seat (15), the tooth plate (23) is slidably installed on the second T-shaped guide seat (19), the output end of the servo push cylinder (7) is coaxially fixedly installed with a connecting ring (36), the outer surface of the connecting ring (36) is fixedly installed with a connecting frame (20), the end of the connecting frame (20) is fixed to the pushing sleeve (22), the side of the connecting frame (20) is obliquely fixedly installed with a reinforcing frame (21), and the end of the reinforcing frame (21) is fixed to the pushing sleeve (22).

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