A punching device for coaxial limiting type eccentric composite spinneret

Abstract

The application relates to a punching device for a coaxial limiting eccentric composite spinneret, belonging to the technical field of spinneret punching technology, and comprising a machining machine tool main body and a punching driving cylinder. The output end of the punching driving cylinder is fixedly connected with a supporting frame, the outer wall of the supporting frame is fixedly connected with a fixed disc, the outer wall of the fixed disc is fixedly installed with a transmission motor, the downward movement of a lifting abutting block drives the second abutting inclined surface of the outer wall to abut against the first abutting inclined surface of the outer wall of a poking sliding block, the poking sliding block slides away from the direction of a containing groove, at this time, multiple pressing blocks synchronously extend out of the containing groove, and the pressing blocks keep pressing the spinneret after extending out. Before each punching, a rotating frame is further used for pressing the spinneret to prevent edge warping, the pressing and contacting range between the rotating frame and the spinneret is enlarged, the spinneret is subjected to more uniform pressing, and the problem that the spinneret is prone to edge warping during the punching process is solved.

Description

Technical Field

[0001] This invention relates to the field of spinneret punching technology, specifically to a punching device for a coaxial limiting eccentric composite spinneret. Background Technology

[0002] An eccentric composite spinneret is a precision spinning assembly used to produce irregularly shaped or composite fibers. Its core feature is its asymmetrical channel design. This spinneret is mainly used to produce fibers with special properties. It can combine two or more different components into fibers by arranging them side by side. During the processing of the eccentric composite spinneret, the punching device of the coaxial limiting eccentric composite spinneret is used to perform eccentric punching, so that the spinneret channel is off the central axis, allowing the polymer components to be asymmetrically combined during extrusion. The flow channel contains an independent melt distribution system to ensure that the components are combined at the inlet of the spinneret according to a preset ratio. The eccentric channel guides the melt flow to one side.

[0003] In the punching process of eccentric composite spinnerets, it is usually necessary to use a punching device to process the corresponding spinneret holes on the spinneret. Since the spinneret is usually a circular plate structure, during the punching process, the spinneret needs to be pre-placed and clamped and fixed above the die to ensure the accuracy of the punching position. However, the existing clamping and fixing methods usually mainly fix the circumference or local area of ​​the spinneret. When the punch presses down on the spinneret, the impact force can easily cause the middle part of the circular spinneret or the part near the punching position to warp. When a part of the spinneret warps, the flatness of the spinneret has changed during the subsequent punching process, and the punching error will gradually increase, thus affecting the entire spinneret processing process. Summary of the Invention

[0004] The purpose of this invention is to provide a punching device for a coaxial limiting eccentric composite spinneret, so as to solve the problem mentioned in the background art that the spinneret is prone to warping and changes in flatness during the punching process in existing punching devices.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a punching device for a coaxial limiting eccentric composite spinneret, comprising a machine tool body and a punching drive cylinder. A support frame is fixedly connected to the output end of the punching drive cylinder. A fixed disk is fixedly connected to the outer wall of the support frame. A drive motor is fixedly installed on the outer wall of the fixed disk. An adjusting slider is fixedly connected to the output end of the drive motor. An annular groove is formed on the fixed disk. A sliding block is slidably installed on the inner wall of the annular groove. An electric telescopic rod is fixedly installed on the outer wall of the sliding block. A fixed plate is fixedly connected to the output end of the electric telescopic rod. An eccentric rotating disk is fixedly connected to the outer wall of the fixed plate. An adjusting groove is formed on the eccentric rotating disk. The adjusting slider is slidably connected to the inner wall of the adjusting groove. A fixed sleeve is fixedly connected to the outer wall of the eccentric rotating disk. An eccentric composite punch is fixedly connected to the outer wall of the fixed sleeve.

[0006] Preferably, a corrugated telescopic tube is fixedly connected to the outer wall of the eccentric rotating disk, a coaxial limiting sleeve is fixedly connected to the end of the corrugated telescopic tube, a fixing ring is fixedly connected to the outer wall of the coaxial limiting sleeve, and a first return spring is fixedly connected to the outer wall of the fixing ring, with one end of the first return spring fixedly connected to the eccentric rotating disk.

[0007] Preferably, a rotating frame is rotatably mounted on one end of the coaxial limiting sleeve, a storage groove is provided on the outer wall of the rotating frame, a second return spring is fixedly connected to the inner wall of the storage groove, and a pressing block is fixedly connected to one end of the second return spring.

[0008] Preferably, a sliding block is fixedly connected to the outer wall of the pressing block, and a first abutting inclined surface is provided on the sliding block. A plurality of third return springs are fixedly connected to the outer wall of the fixed sleeve block, and a lifting abutting block is fixedly connected to one end of the third return spring. A second abutting inclined surface is provided on the outer wall of the lifting abutting block, and the movement trajectory of the lifting abutting block abuts against the sliding block.

[0009] Preferably, a fixing tube is fixedly connected to the rotating frame, and a spiral groove is formed on the outer wall of the fixing tube, and the lifting contact block is sleeved on the fixing tube.

[0010] Preferably, the inner wall of the lifting contact block is rotatably mounted with transmission balls, which are slidably mounted on the inner wall of the spiral groove.

[0011] Preferably, an electric rotary table is rotatably mounted on the inner wall of the machine tool body, a plurality of electric grippers are slidably mounted on the electric rotary table, and a punching die is fixedly mounted on the electric rotary table.

[0012] Preferably, an electric slide rail is fixedly installed on the inner wall of the machine tool body, and the punching drive cylinder is fixedly installed on the moving end of the electric slide rail.

[0013] Preferably, a dustproof sliding door is slidably connected to the outer wall of the machine tool body, a touch operation screen is fixedly installed on the outer wall of the machine tool body, and an observation window glass is fixedly connected to the dustproof sliding door.

[0014] Preferably, a sliding sleeve frame is fixedly connected to the outer wall of the lifting contact block, and the sliding sleeve frame is slidably fitted onto the outer wall of the fixed sleeve block.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the downward movement of the lifting contact block causes the second contact slope of the outer wall to contact the first contact slope of the outer wall of the sliding block. The contact causes the sliding block to slide away from the storage groove. At this time, multiple pressing blocks extend out of the storage groove simultaneously. After extending, they maintain the state of pressing the spinneret. Before each punching, the rotating frame further presses the spinneret to prevent warping, expanding the pressing contact range between the rotating frame and the spinneret, so that the spinneret is subjected to a more uniform pressing effect, thus solving the problem of warping of the spinneret during the punching process.

[0016] 2. In this invention, the lifting contact block drives the transmission ball to press down, causing the transmission ball to slide along the spiral groove. Since the lifting contact block and the sliding sleeve are fitted on the fixed sleeve block, they cannot rotate. Therefore, when the lifting contact block drives the transmission ball to move down, the fixed tube is forced to rotate the rotating frame. The rotation of the rotating frame causes multiple pressing blocks to rotate synchronously, so that the spinneret is further attached to the upper part of the punching die under the action of axial pressing and rotational compaction, thereby improving the fixing stability of the spinneret before punching, and can smooth out and eliminate the flatness effect caused by the previous punching in the subsequent punching process.

[0017] 3. In this invention, the output end of the electric telescopic rod drives the fixed plate and the eccentric rotating disk to move, so that the adjusting slider moves relative to the adjusting groove, thereby controlling the position of the moving eccentric rotating disk, that is, the eccentric distance of the eccentric compound punch. In the subsequent punching operation, the drive motor is started, and the drive motor drives the adjusting slider at the output end to rotate. When the adjusting slider rotates, it drives the entire eccentric rotating disk to rotate. When the eccentric rotating disk rotates, it drives the fixed sleeve block and the eccentric compound punch to rotate eccentrically, thereby dynamically adjusting the eccentric position of the punching. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the electric rotating disk and its surrounding structure according to the present invention; Figure 4This is a schematic diagram of the punching drive cylinder and its surrounding structure according to the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is a schematic diagram of the rotating frame and its surrounding structure according to the present invention; Figure 7 This is a schematic diagram of the eccentric rotating disk and its surrounding cross-sectional structure according to the present invention; Figure 8 This is a schematic diagram of the coaxial limiting sleeve and its surrounding cross-sectional structure according to the present invention; Figure 9 This is a schematic diagram of the fixed disk and its surrounding structure according to the present invention.

[0019] In the attached diagram, the components represented by each number are as follows: 1. Machine tool body; 2. Touch screen control panel; 3. Dustproof sliding door; 4. Observation window glass; 5. Electric rotary table; 6. Electric gripper; 7. Punching die; 8. Electric slide rail; 9. Punching drive cylinder; 10. Support frame; 11. Fixed plate; 12. Drive motor; 13. Annular slide groove; 14. Sliding block; 15. Electric telescopic rod; 16. Fixed plate; 17. Eccentric rotary table; 18. Adjusting slide groove; 19. Adjusting slider; 20. Corrugated extension... 21. Retractable tube; 22. Coaxial limiting sleeve; 23. Fixing ring; 24. First return spring; 25. Rotating frame; 26. Storage groove; 27. Second return spring; 28. Pressing block; 29. ​​Fixing sleeve block; 30. Eccentric compound punch; 31. Third return spring; 32. Sliding sleeve frame; 33. Actuating slider; 34. First contact slope; 35. Lifting contact block; 36. Second contact slope; 37. Fixing tube; 38. Spiral groove; 39. Transmission ball. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] This invention provides a technical solution: such as Figure 1 - Figure 9The punching device for a coaxial limiting eccentric composite spinneret shown includes a machine tool body 1 and a punching drive cylinder 9. A support frame 10 is fixedly connected to the output end of the punching drive cylinder 9. A fixed plate 11 is fixedly connected to the outer wall of the support frame 10. A drive motor 12 is fixedly installed on the outer wall of the fixed plate 11. An adjusting slider 19 is fixedly connected to the output end of the drive motor 12. An annular groove 13 is formed on the fixed plate 11. A sliding block 14 is slidably installed on the inner wall of the annular groove 13. An electric telescopic rod 15 is fixedly installed on the outer wall of the sliding block 14. A fixed plate 16 is fixedly connected to the output end of the electric telescopic rod 15. An eccentric rotating disk 17 is fixedly connected to the outer wall of the fixed plate 16. An adjusting groove 18 is formed on the eccentric rotating disk 17. The adjusting slider 19 is slidably connected to the inner wall of the adjusting groove 18. A fixed... The outer wall of the fixed sleeve 28 is fixedly connected to an eccentric compound punch 29. The electric telescopic rod 15 is activated, and its output end drives the fixed plate 16 and the eccentric rotating disk 17 to move, so that the adjusting slider 19 moves relative to the adjusting groove 18, thereby controlling the position of the eccentric rotating disk 17, i.e., the eccentric distance of the eccentric compound punch 29. In the subsequent punching operation, the drive motor 12 is activated, and the drive motor 12 drives the adjusting slider 19 at its output end to rotate. When the adjusting slider 19 rotates, it drives the entire eccentric rotating disk 17 to rotate. When the eccentric rotating disk 17 rotates, it drives the fixed sleeve 28 and the eccentric compound punch 29 to rotate eccentrically, thereby dynamically adjusting the eccentric position of the punching. It should be noted that when the eccentric rotating disk 17 rotates, it drives the fixed plate 16, the electric telescopic rod 15, and the sliding block 14 to slide along the annular groove 13.

[0022] A corrugated telescopic tube 20 is fixedly connected to the outer wall of the eccentric rotating disk 17. A coaxial limiting sleeve 21 is fixedly connected to the end of the corrugated telescopic tube 20. A fixing ring 22 is fixedly connected to the outer wall of the coaxial limiting sleeve 21. A first return spring 23 is fixedly connected to the outer wall of the fixing ring 22. One end of the first return spring 23 is fixedly connected to the eccentric rotating disk 17. A rotating frame 24 is rotatably mounted on one end of the coaxial limiting sleeve 21. A storage groove 25 is opened on the outer wall of the rotating frame 24. A second return spring 26 is fixedly connected to the inner wall of the storage groove 25. A pressing block 27 is fixedly connected to one end of the second return spring 26. A sliding block 32 is fixedly connected to the outer wall of the pressing block 27. The sliding block 32 has a first abutting inclined surface 33. Multiple third return springs 30 are fixedly connected to the outer wall of the fixed sleeve block 28. One end of each third return spring 30 is fixedly connected to a lifting abutting block 34. The outer wall of the lifting abutting block 34 has a second abutting inclined surface 35. The movement trajectory of the lifting abutting block 34 abuts against the sliding block 32. Before each punching operation, the output end of the punching drive cylinder 9 slowly extends a fixed length to perform the above anti-warping and smoothing operations. Then, the punching is started. When the hole drive cylinder 9 is performing normal punching, it should be noted that the elastic force of the first return spring 23 is less than the sum of the elastic forces of the multiple third return springs 30. During punching, the output end of the punch drive cylinder 9 drives the eccentric rotating disk 17, the fixed sleeve block 28 and the eccentric compound punch 29 to move down quickly. At this time, the force of the rapid downward pressure of the output end of the punch drive cylinder 9 is greater than that of the third return spring 30, causing the sliding sleeve frame 31 to slide up along the outer wall of the fixed sleeve block 28, the third return spring 30 to be compressed, and the eccentric compound punch 29 to move down and pass through the spinneret to complete the punching.

[0023] A fixed tube 36 is fixedly connected to the rotating frame 24. The outer wall of the fixed tube 36 is provided with a spiral groove 37. The lifting contact block 34 is sleeved on the fixed tube 36. A transmission ball 38 is rotatably installed on the inner wall of the lifting contact block 34. The transmission ball 38 is slidably installed on the inner wall of the spiral groove 37. Since the spiral groove 37 is set as a spiral groove, the lifting contact block 34 drives the transmission ball 38 to slide along the spiral groove 37. Since the lifting contact block 34 and the sliding sleeve 31 are sleeved on the fixed sleeve 28, they cannot rotate. Therefore, when the lifting contact block 34 drives the transmission ball 38 to move down, the fixed tube 36 is forced to drive the rotating frame 24 to rotate. The rotation of the rotating frame 24 drives multiple pressing blocks 27 to rotate synchronously, which can smooth out and eliminate the flatness effect caused by the previous punching in the subsequent punching process.

[0024] An electric rotary table 5 is rotatably mounted on the inner wall of the main body 1 of the processing machine tool. Multiple electric grippers 6 are slidably mounted on the electric rotary table 5. A punching die 7 is fixedly mounted on the electric rotary table 5. The spinneret is placed on the punching die 7, and then the multiple electric grippers 6 are activated to clamp the spinneret in a circumferential manner, thus completing the position fixation of the spinneret.

[0025] An electric slide rail 8 is fixedly installed on the inner wall of the machine tool body 1, and a punching drive cylinder 9 is fixedly installed on the moving end of the electric slide rail 8. A dustproof sliding door 3 is slidably connected to the outer wall of the machine tool body 1, and a touch screen 2 is fixedly installed on the outer wall of the machine tool body 1. An observation window 4 is fixedly connected to the dustproof sliding door 3. When the dustproof sliding door 3 is closed, the internal condition of the machine tool body 1 can be observed through the observation window 4. The moving end of the electric slide rail 8 is controlled by the touch screen 2 to drive the punching drive cylinder 9 to move as a whole. After the punching drive cylinder 9 is moved above the spinneret, the punching operation can begin.

[0026] A sliding sleeve 31 is fixedly connected to the outer wall of the lifting contact block 34, and the sliding sleeve 31 is slidably sleeved on the outer wall of the fixed sleeve block 28.

[0027] Working principle: When using the punching device with coaxial limiting eccentric composite spinneret, first place the spinneret on the punching die 7, then start multiple electric grippers 6 to circumferentially clamp the spinneret. After fixing the position of the spinneret, close the dustproof sliding door 3 and observe the internal condition of the machine tool body 1 through the observation window glass 4. Control the moving end of the electric slide rail 8 through the touch screen 2 to drive the punching drive cylinder 9 to move as a whole. After moving the punching drive cylinder 9 above the spinneret, the punching operation can begin.

[0028] First, the electric telescopic rod 15 can be activated by controlling the start of the motor. The output end of the electric telescopic rod 15 drives the fixed plate 16 and the eccentric rotating disk 17 to move, so that the adjusting slider 19 moves relative to the adjusting groove 18, thereby controlling the position of the eccentric rotating disk 17, that is, the eccentric distance of the eccentric compound punch 29. In the subsequent punching operation, the drive motor 12 is activated, and the drive motor 12 drives the adjusting slider 19 at the output end to rotate. When the adjusting slider 19 rotates, it drives the entire eccentric rotating disk 17 to rotate. When the eccentric rotating disk 17 rotates, it drives the fixed sleeve block 28 and the eccentric compound punch 29 to rotate eccentrically, thereby dynamically adjusting the eccentric position of the punching. It should be noted that when the eccentric rotating disk 17 rotates, it drives the fixed plate 16, the electric telescopic rod 15, and the sliding block 14 to slide along the annular groove 13.

[0029] Before each punching operation, the punching drive cylinder 9 first drives the output end to slowly move down by the same stroke, causing the rotating frame 24 to abut against the spinneret surface. This abutment causes the rotating frame 24 to transmit a reaction force upward, causing the coaxial limiting sleeve 21 and the fixing ring 22 to be compressed upward by the first return spring 23 and the corrugated telescopic tube 20. At this time, the corrugated telescopic tube 20 is gradually compressed and folded, and the lifting abutment block 34 gradually moves down. The downward movement of the lifting abutment block 34 causes the second abutment slope 35 on the outer wall to move down and abut against the first abutment slope 33 on the outer wall of the actuating slider 32. This abutment causes the actuating slider 32 to slide away from the receiving groove 25. At this time, multiple pressing blocks 27 extend out of the receiving groove 25 simultaneously and maintain the state of pressing the spinneret after extending. Before each punching operation, the rotating frame 24 further presses the spinneret to prevent warping, thus solving the problem of warping that easily occurs in the spinneret during the punching process.

[0030] The lifting contact block 34 drives the transmission ball 38 to press down, causing the transmission ball 38 to slide along the inner wall of the spiral groove 37. Since the lifting contact block 34 and the sliding sleeve 31 are fitted on the fixed sleeve block 28, they cannot rotate. Therefore, when the lifting contact block 34 drives the transmission ball 38 to move down, the fixed tube 36 is forced to drive the rotating frame 24 to rotate. The rotation of the rotating frame 24 drives multiple pressing blocks 27 to rotate synchronously, which can smooth out and eliminate the flatness effect caused by the previous punching in the subsequent punching process.

[0031] Before each punching operation, the output end of the punching drive cylinder 9 slowly extends to a fixed length to perform the above-mentioned anti-warping and smoothing operations. Then, when the punching drive cylinder 9 is started for normal punching, it should be noted that the elastic force of the first return spring 23 is less than the sum of the elastic forces of the multiple third return springs 30. During punching, the rotating frame 24 and the pressing block 27 continue to be pressed against the surface of the spinneret, causing the upper end face of the fixed tube 36 to press against the inner wall of the lifting abutment block 34. The lifting abutment block 34 moves upward, taking the sliding sleeve frame 31 and sliding it up along the outer wall of the fixed sleeve block 28. The third return spring 30 is compressed, so it will not put a burden on the transmission ball 38 and the spiral groove 37 before punching.

[0032] It should be noted that the purpose of moving the fixed plate 16 with the eccentric rotating disk 17 is to fine-tune the eccentric position of the punching hole. Therefore, the range of movement of the fixed plate 16 with the eccentric rotating disk 17 is small. The adjusting slider 19 will not slide along the entire inner wall trajectory of the adjusting groove 18, but will only adjust the position according to the adjustment. The fixed plate 16 will not collide with the adjusting slider 19 and the connecting column on the adjusting slider 19. The pressing and smoothing effects and structure of the present invention are all performed slowly before each punching. The downward displacement of the lifting contact block 34 to press and push the slider 32 is performed in a slow descent. After the pressing block 27 is pressed onto the surface of the spinneret, the two sides of the side wall of the pressing block 27 are restricted by the inner contour of the rotating frame 24. The lower surface of the pressing block 27 presses the spinneret and is limited by the spinneret. The rear of the pressing block 27 is restricted by the second return spring 26 and the inner wall of the rotating frame 24. Therefore, at this time, the pressing block 27 can only move in the direction of stretching the second return spring 26. It should be noted that the lifting contact block 34 is a ring-shaped part, and a second contact slope 35 is provided at its lower end along the circumference. The punching die 7 is an integral die. During the punching process, the rotation of the punching die 7 is controlled by the rotation of the electric rotating disk 5. In this invention, the eccentric composite punch 29 is suitable for punching eccentric skin core type composite spinnerets, and can also be used for parallel type composite spinnerets. The rotating frame 24 and the pressing block 27 are both made of rubber, so they are not easy to damage the spinneret during pressing, smoothing and stretching actions.

Claims

1. A punching device for a coaxial limiting eccentric composite spinneret, comprising a machine tool body (1) and a punching drive cylinder (9), characterized in that: The output end of the punching drive cylinder (9) is fixedly connected to a support frame (10). A fixed plate (11) is fixedly connected to the outer wall of the support frame (10). A drive motor (12) is fixedly installed on the outer wall of the fixed plate (11). An adjusting slider (19) is fixedly connected to the output end of the drive motor (12). An annular groove (13) is provided on the fixed plate (11). A sliding block (14) is slidably installed on the inner wall of the annular groove (13). The outer wall of the sliding block (14) is fixedly installed with... An electric telescopic rod (15) is provided. A fixed plate (16) is fixedly connected to the output end of the electric telescopic rod (15). An eccentric rotating disk (17) is fixedly connected to the outer wall of the fixed plate (16). An adjusting groove (18) is provided on the eccentric rotating disk (17). An adjusting slider (19) is slidably connected to the inner wall of the adjusting groove (18). A fixed sleeve block (28) is fixedly connected to the outer wall of the eccentric rotating disk (17). An eccentric compound punch (29) is fixedly connected to the outer wall of the fixed sleeve block (28).

2. The punching device for a coaxial limiting eccentric composite spinneret according to claim 1, characterized in that: The outer wall of the eccentric rotating disk (17) is fixedly connected to a corrugated telescopic tube (20), and the end of the corrugated telescopic tube (20) is fixedly connected to a coaxial limiting sleeve (21). The outer wall of the coaxial limiting sleeve (21) is fixedly connected to a fixing ring (22), and the outer wall of the fixing ring (22) is fixedly connected to a first return spring (23). One end of the first return spring (23) is fixedly connected to the eccentric rotating disk (17).

3. The punching device for a coaxial limiting eccentric composite spinneret according to claim 2, characterized in that: One end of the coaxial limiting sleeve (21) is rotatably mounted with a rotating frame (24). The outer wall of the rotating frame (24) is provided with a storage groove (25). The inner wall of the storage groove (25) is fixedly connected with a second reset spring (26). One end of the second reset spring (26) is fixedly connected with a pressing block (27).

4. The punching device for a coaxial limiting eccentric composite spinneret according to claim 3, characterized in that: The outer wall of the pressing block (27) is fixedly connected to a sliding block (32), and the sliding block (32) is provided with a first contact slope (33). The outer wall of the fixed sleeve block (28) is fixedly connected to a plurality of third return springs (30), and one end of the third return spring (30) is fixedly connected to a lifting contact block (34). The outer wall of the lifting contact block (34) is provided with a second contact slope (35), and the movement trajectory of the lifting contact block (34) is in contact with the sliding block (32).

5. The punching device for a coaxial limiting eccentric composite spinneret according to claim 4, characterized in that: A fixed tube (36) is fixedly connected to the rotating frame (24), and a spiral groove (37) is opened on the outer wall of the fixed tube (36). The lifting contact block (34) is sleeved on the fixed tube (36).

6. The punching device for a coaxial limiting eccentric composite spinneret according to claim 5, characterized in that: The inner wall of the lifting contact block (34) is rotatably mounted with a transmission ball (38), which is slidably mounted on the inner wall of the spiral groove (37).

7. The punching device for a coaxial limiting eccentric composite spinneret according to claim 1, characterized in that: An electric rotary disk (5) is rotatably mounted on the inner wall of the main body (1) of the machining tool. Multiple electric grippers (6) are slidably mounted on the electric rotary disk (5). A punching die (7) is fixedly mounted on the electric rotary disk (5).

8. The punching device for a coaxial limiting eccentric composite spinneret according to claim 1, characterized in that: An electric slide rail (8) is fixedly installed on the inner wall of the main body (1) of the machining tool, and the punching drive cylinder (9) is fixedly installed on the moving end of the electric slide rail (8).

9. The punching device for a coaxial limiting eccentric composite spinneret according to claim 1, characterized in that: The outer wall of the main body (1) of the processing machine tool is slidably connected to a dustproof sliding door (3), and a touch operation screen (2) is fixedly installed on the outer wall of the main body (1). An observation window glass (4) is fixedly connected to the dustproof sliding door (3).

10. The punching device for a coaxial limiting eccentric composite spinneret according to claim 4, characterized in that: The outer wall of the lifting contact block (34) is fixedly connected to a sliding sleeve frame (31), which is slidably sleeved on the outer wall of the fixed sleeve block (28).

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