Cable peeling device

Abstract

The utility model relates to the technical field of cable processing, in particular to a cable peeling device which comprises a base, a driving assembly and a peeling assembly are sequentially arranged at the top of the base from left to right, the driving assembly comprises a first U-shaped frame, and a driving roller is rotationally connected to the position, close to the bottom, between the front side and the rear side of the inner wall of the first U-shaped frame. The peeling assembly comprises a second U-shaped frame, a supporting roller is rotationally connected to the position, close to the bottom, between the front side and the rear side of the inner wall of the second U-shaped frame, and a peeling adjusting piece capable of being adjusted up and down is arranged in the second U-shaped frame and located over the supporting roller. According to the cable peeling device, the height of the cutter can be adjusted according to the thickness of the outer layer of the cable, so that the cutter can effectively cut the outer layers of the cables with different thicknesses, and the problem that the cutter cannot adapt to the cables with different diameters due to the fixed height of the cutter in traditional equipment is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable processing, in particular to a cable peeling device. Background Technique

[0002] In the modern industrial and communication fields, cables are key components for transmitting electricity and data. The outer insulating material of the cable not only protects the internal wires from physical damage and environmental impacts but also ensures the stability and safety of transmission. However, in the manufacturing, repair, and recycling processes of cables, removing these insulating materials is an essential step. Traditional peeling methods, such as manual peeling or using simple mechanical tools, are not only inefficient but also prone to causing injuries to operators or damaging the internal wires.

[0003] The patent with the publication number CN220822439U discloses a cable peeling device, including a support platform. The outer wall of the support platform is fixedly equipped with a sleeve, the inner wall of the sleeve is penetrated and equipped with a pressing structure, and the inner wall of the support platform is penetrated and equipped with a cutter structure. The motor shaft of the motor is connected to another roller through a transmission belt. The support platform ensures the overall stability of the device. The sleeve restricts the pressing structure and at the same time restricts the cable to be processed, ensuring good cable cutting effect. Through the action of the cutter structure, the fixed cable can be actively cut open. Then, by stretching the cable and the pushing of the roller, the cable can be completely cut. Through the action of the support frame, the processing components are fixed, and through the cooperation of the roller and the motor, and at the same time through the action of the transmission belt, the cable can be actively transmitted towards the sleeve direction, saving labor and avoiding operators being cut by the tool, ensuring safety.

[0004] In the specific use process of the above-mentioned prior art, the height of the cutter protruding from the support platform is fixed, which results in a limited thickness of the cable skin that the cutter can cut. If the thickness of the cable skin is greater than the height of the cutter protruding, the cable skin cannot be smoothly cut. Moreover, the cutter is a wearing part and needs to be replaced when damaged. However, the cutter in the above-mentioned prior art is located inside the support platform and the sleeve, and there is a problem of being difficult to replace. In view of this, we propose a cable peeling device. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a cable peeling device to solve the problems raised in the above background technique.

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

[0007] A cable peeling device includes a base. On the top of the base, a driving component and a peeling component are successively arranged from left to right. The driving component includes a first U-shaped frame. Between the front and rear sides of the inner wall of the first U-shaped frame and near the bottom, a driving roller is rotatably connected. At the rear side of the first U-shaped frame, there is a motor for driving the driving roller to rotate. The motor works with an external power supply, and the output shaft of the motor is coaxially connected to the rear end of the rotating shaft of the driving roller. By driving the driving roller to rotate through the motor, the cable to be peeled is pushed to move to the right. Inside the first U-shaped frame and directly above the driving roller, there is a first U-shaped adjusting plate that can be adjusted up and down. A driven roller is rotatably connected inside the first U-shaped adjusting plate. The first U-shaped adjusting plate can drive the driven roller to move up and down, thereby adjusting the distance between the driven roller and the driving roller to adapt to cables of different diameters.

[0008] The peeling component includes a second U-shaped frame. Between the front and rear sides of the inner wall of the second U-shaped frame and near the bottom, a supporting roller is rotatably connected, which plays a supporting role for the cable. Inside the second U-shaped frame and directly above the supporting roller, there is a peeling adjusting part whose distance from the supporting roller can be adjusted to adapt to cables of different diameters. The peeling adjusting part includes a second U-shaped adjusting plate. At the positions near the left and right ends of the bottom of the inner wall of the second U-shaped adjusting plate and between the front and rear sides, two pressing wheels are rotatably connected. The two pressing wheels play a role in limiting the top of the cable. Cooperating with the supporting roller, the cable can move steadily to the right, avoiding shaking, which is beneficial for the cutter to stably cut open the protective layer of the cable. Between the front and rear sides of the inner wall of the second U-shaped adjusting plate, there is a rectangular block that can be adjusted up and down. In the middle of the bottom of the rectangular block, there are two positioning convex plates arranged symmetrically in the front and rear. A cutter is detachably connected between the two positioning convex plates by bolts. The cutter is located between the two pressing wheels, and the height of the cutter can be adjusted independently, thereby adjusting the distance between the bottom end of the cutter and the bottom of the pressing wheel to realize the adjustment of the depth of the cutter cutting into the protective layer of the cable and avoid damaging the copper wire inside the cable.

[0009] Preferably, the first U-shaped frame is detachably connected to the top of the base by bolts. In the middle of the top of the first U-shaped frame, a first threaded rod is threadedly connected. The bottom end of the first threaded rod is rotatably connected to the middle of the top of the first U-shaped adjusting plate. By adjusting the height of the first U-shaped adjusting plate through the first threaded rod, the distance between the driven roller and the driving roller can be adjusted.

[0010] Preferably, a first knob is provided at the top end of the first threaded rod. The first knob is used for operating to rotate the first threaded rod to realize the height adjustment of the first U-shaped adjusting plate.

[0011] Preferably, the first U-shaped adjusting plate is slidably connected to the first U-shaped frame, and the front and rear sides of the first U-shaped adjusting plate are respectively attached to the front and rear sides of the inner wall of the first U-shaped frame, ensuring the stable up-and-down adjustment of the first U-shaped adjusting plate and maintaining stability after adjustment.

[0012] Preferably, the second U-shaped frame is detachably connected to the top of the base by bolts. A second threaded rod is threadedly connected to the middle of the top of the second U-shaped frame, and the bottom end of the second threaded rod is rotatably connected to the middle of the top of the second U-shaped adjusting plate. The height of the second U-shaped adjusting plate is adjusted by the second threaded rod, thereby realizing the adjustment of the distance between the pressing wheel and the supporting roller.

[0013] Preferably, a second knob is provided at the top end of the second threaded rod. The second knob is used for rotating the second threaded rod to operate and rotate the second threaded rod to realize the height adjustment of the second U-shaped adjusting plate.

[0014] Preferably, the second U-shaped adjusting plate is slidably connected to the second U-shaped frame, and the front and rear sides of the second U-shaped adjusting plate are respectively attached to the front and rear sides of the inner wall of the second U-shaped frame, ensuring the stable up-and-down adjustment of the second U-shaped adjusting plate and maintaining stability after adjustment.

[0015] Preferably, the driven driving roller is located directly above the driving driving roller, and the supporting roller is located directly to the right of the driving driving roller. Convex strips are provided on the concave surfaces of the driving driving roller, the driven driving roller and the supporting roller, increasing the friction with the surface of the cable and facilitating the conveying of the cable.

[0016] Preferably, L-shaped connecting grooves are formed on the front and rear sides of the inner wall of the second U-shaped adjusting plate. The two L-shaped connecting grooves are symmetrically arranged front and back. The right end of the L-shaped connecting groove is an open structure. The front and rear ends of the rectangular block are respectively slidably connected to the two L-shaped connecting grooves. The end of the rectangular block can be moved out from the opening of the L-shaped connecting groove, facilitating the disassembly and assembly of the rectangular block and the second U-shaped adjusting plate, and further facilitating the staff to replace the damaged cutter.

[0017] Preferably, a fixed side plate is provided between the front and rear sides of the inner wall of the second U-shaped adjusting plate and at the right side position. An adjusting groove is formed on the side surface of the fixed side plate. A positioning screw is provided in the middle of the right side of the rectangular block. The right end of the positioning screw passes through the adjusting groove and is threadedly connected with a pressing nut. The left side of the pressing nut abuts against the right side of the fixed side plate. Through the cooperation of the pressing nut and the positioning screw, the height of the rectangular block can be adjusted, thereby adjusting the height of the bottom end of the cutter and realizing the adjustment of the cutting depth of the cable protective layer.

[0018] Compared with the prior art, the beneficial effects of the present utility model are:

[0019] 1. The cable peeling device can adjust the height of the cutting knife according to the thickness of the outer layer of the cable, so as to ensure that the cutting knife can effectively cut the outer layer of cables with different thicknesses, which avoids the problem that the traditional equipment cannot adapt to cables with different diameters due to the fixed height of the cutting knife.

[0020] 2. The cable peeling device has a detachable design through the L-shaped connection groove, and the cutting knife can be conveniently replaced, which solves the problem that it is difficult to replace the cutting knife located inside in the prior art, and reduces the complexity and time of maintenance.

[0021] 3. The cable peeling device can adapt to cables with different diameters by adjusting the heights of the first U-shaped adjusting plate and the second U-shaped adjusting plate, which enhances the applicability of the device, can process cables of various specifications, and expands the application range of the equipment.

[0022] 4. In the cable peeling device, the pressure wheel and the support roller can effectively limit the shaking of the cable, ensuring the stability of the cable during the peeling process, which improves the cutting accuracy and avoids the problems of uneven cutting or damage to the internal wires caused by the shaking of the cable.

[0023] 5. The cable peeling device, through the first knob and the second knob, the operator can conveniently adjust the threaded rod, thereby adjusting the heights of the adjusting plates. This design simplifies the operation process, enabling non-professionals to easily use the equipment.

[0024] 6. The cable peeling device reduces manual intervention through an automated feeding and peeling process, reducing the risk of operator injury. At the same time, the design of the equipment also reduces the possibility of manual injury by the cutting tool, ensuring the safety of the operation. Brief Description of the Drawings

[0025] Figure 1 It is a schematic diagram of the overall first perspective structure of the present utility model;

[0026] Figure 2 It is a schematic diagram of the overall second perspective structure of the present utility model;

[0027] Figure 3 It is a schematic diagram of the overall third perspective structure of the present utility model;

[0028] Figure 4 It is a schematic sectional view of the driving component in the present utility model;

[0029] Figure 5 It is a schematic sectional view of the peeling component in the present utility model;

[0030] Figure 6 It is a schematic sectional view of the peeling adjusting part in the present utility model;

[0031] Figure 7 It is a partial structural schematic diagram of the peeling adjustment part in the present utility model;

[0032] In the figure: 1. Base; 2. Driving assembly; 20. First U-shaped frame; 21. Active driving roller; 22. Motor; 23. First U-shaped adjusting plate; 24. Driven driving roller; 25. First threaded rod; 26. First knob; 3. Peeling assembly; 30. Second U-shaped frame; 31. Supporting roller; 32. Peeling adjustment part; 320. Second U-shaped adjusting plate; 3200. L-shaped connecting groove; 321. Pressing wheel; 322. Rectangular block; 3220. Positioning convex plate; 323. Cutting knife; 324. Fixed side plate; 3240. Adjusting groove; 325. Positioning screw; 326. Compression nut; 33. Second threaded rod; 330. Second knob. Specific embodiments

[0033] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0034] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0035] Please refer to Figures 1-7 , the present utility model provides a technical solution:

[0036] A cable peeling device includes a base 1. A driving component 2 and a peeling component 3 are successively arranged on the top of the base 1 from left to right. The driving component 2 includes a first U-shaped frame 20. A driving roller 21 is rotatably connected between the front and rear sides of the inner wall of the first U-shaped frame 20 near the bottom. A motor 22 for driving the driving roller 21 to rotate is arranged at the rear side of the first U-shaped frame 20. The motor 22 is powered by an external power supply. The output shaft of the motor 22 is coaxially connected to the rear end of the rotating shaft of the driving roller 21. By driving the driving roller 21 to rotate through the motor 22, the cable to be peeled is pushed to move to the right. A first U-shaped adjusting plate 23 that can be adjusted up and down is arranged in the first U-shaped frame 20 above the driving roller 21. A driven driving roller 24 is rotatably connected in the first U-shaped adjusting plate 23. The first U-shaped adjusting plate 23 can drive the driven driving roller 24 to move up and down, so as to adjust the distance between the driven driving roller 24 and the driving roller 21 to adapt to cables of different diameters;

[0037] The peeling component 3 includes a second U-shaped frame 30. A supporting roller 31 is rotatably connected between the front and rear sides of the inner wall of the second U-shaped frame 30 near the bottom, which plays a supporting role for the cable. A peeling adjusting member 32 that can be adjusted up and down is arranged in the second U-shaped frame 30 above the supporting roller 31. The distance between the peeling adjusting member 32 and the supporting roller 31 can be adjusted to adapt to cables of different diameters. The peeling adjusting member 32 includes a second U-shaped adjusting plate 320. Pressing wheels 321 are rotatably connected to the positions near the left and right ends of the front and rear sides of the inner wall of the second U-shaped adjusting plate 320 near the bottom. The two pressing wheels 321 play a role in limiting the top of the cable. Cooperating with the supporting roller 31 can make the cable move to the right stably, avoid shaking, and is beneficial for the cutter 323 to stably cut the protective layer of the cable. A rectangular block 322 that can be adjusted up and down is arranged between the front and rear sides of the inner wall of the second U-shaped adjusting plate 320. Two positioning convex plates 3220 that are symmetrically arranged front and rear are arranged in the middle of the bottom of the rectangular block 322. A cutter 323 is detachably connected between the two positioning convex plates 3220 by bolts. The cutter 323 is located between the two pressing wheels 321, and the height of the cutter 323 can be adjusted independently, so as to adjust the distance between the bottom end of the cutter 323 and the bottom of the pressing wheel 321, and realize the adjustment of the cutting depth of the cutter 323 into the cable protective layer, and avoid damaging the copper wire inside the cable.

[0038] In this embodiment, the first U-shaped frame 20 is detachably connected to the top of the base 1 by bolts. A first threaded rod 25 is threadedly connected to the middle of the top of the first U-shaped frame 20. The bottom end of the first threaded rod 25 is rotatably connected to the middle of the top of the first U-shaped adjusting plate 23. By adjusting the height of the first U-shaped adjusting plate 23 through the first threaded rod 25, the distance between the driven driving roller 24 and the driving roller 21 can be adjusted.

[0039] Specifically, a first knob 26 is provided at the top of the first threaded rod 25. The first knob 26 is used for rotating the first threaded rod 25 to adjust the height of the first U-shaped adjusting plate 23.

[0040] Furthermore, the first U-shaped adjusting plate 23 is slidably connected within the first U-shaped frame 20. The front and rear sides of the first U-shaped adjusting plate 23 are respectively in contact with the front and rear sides of the inner wall of the first U-shaped frame 20, ensuring stable up-and-down adjustment of the first U-shaped adjusting plate 23 and maintaining stability after adjustment.

[0041] Furthermore, the second U-shaped frame 30 is detachably connected to the top of the base 1 by bolts. A second threaded rod 33 is threadedly connected to the middle of the top of the second U-shaped frame 30. The bottom end of the second threaded rod 33 is rotatably connected to the middle of the top of the second U-shaped adjusting plate 320. By adjusting the height of the second U-shaped adjusting plate 320 through the second threaded rod 33, the distance between the pressing wheel 321 and the supporting roller 31 can be adjusted.

[0042] Furthermore, a second knob 330 is provided at the top of the second threaded rod 33. The second knob 330 is used for rotating the second threaded rod 33 to adjust the height of the second U-shaped adjusting plate 320.

[0043] Furthermore, the second U-shaped adjusting plate 320 is slidably connected within the second U-shaped frame 30. The front and rear sides of the second U-shaped adjusting plate 320 are respectively in contact with the front and rear sides of the inner wall of the second U-shaped frame 30, ensuring stable up-and-down adjustment of the second U-shaped adjusting plate 320 and maintaining stability after adjustment.

[0044] Furthermore, the driven drive roller 24 is located directly above the driving drive roller 21, and the supporting roller 31 is located directly to the right of the driving drive roller 21. The concave surfaces of the driving drive roller 21, the driven drive roller 24, and the supporting roller 31 are all provided with ridges, increasing the friction with the surface of the cable and facilitating the conveying of the cable.

[0045] Furthermore, L-shaped connecting grooves 3200 are respectively formed on the front and rear sides of the inner wall of the second U-shaped adjusting plate 320. The two L-shaped connecting grooves 3200 are symmetrically arranged in the front and rear. The right end of the L-shaped connecting groove 3200 is an open structure. The front and rear ends of the rectangular block 322 are respectively slidably connected within the two L-shaped connecting grooves 3200. The end of the rectangular block 322 can be moved out from the opening of the L-shaped connecting groove 3200, facilitating the disassembly and assembly of the rectangular block 322 and the second U-shaped adjusting plate 320, and further facilitating the replacement of the damaged cutting tool 323 by the staff.

[0046] Further, a fixed side plate 324 is provided at a position on the right side between the front and rear sides of the inner wall of the second U-shaped adjusting plate 320. An adjusting groove 3240 is formed on the side surface of the fixed side plate 324. A positioning screw 325 is provided in the middle of the right side of the rectangular block 322. The right end of the positioning screw 325 passes through the adjusting groove 3240 and is threadedly connected with a compression nut 326. The left side of the compression nut 326 abuts against the right side of the fixed side plate 324. By the cooperation of the compression nut 326 and the positioning screw 325, the height of the rectangular block 322 can be adjusted, so as to adjust the height of the bottom end of the cutter 323, and the cutting depth of the cable protective layer can be adjusted.

[0047] When the cable stripping device of this embodiment is in use, first, place the cable stripping device on a stable workbench and ensure that the base 1 is stable. Connect the external power supply of the motor 22 to ensure that the motor 22 can work normally. By rotating the first knob 26, adjust the first threaded rod 25, so as to change the height of the first U-shaped adjusting plate 23. Adjust the first U-shaped adjusting plate 23 to make the distance between the driven driving roller 24 and the driving roller 21 suitable for the diameter of the cable to be stripped. Then, by rotating the second knob 330, adjust the second threaded rod 33, so as to change the height of the second U-shaped adjusting plate 320. Adjust the second U-shaped adjusting plate 320 to make the distance between the pressing wheel 321 and the supporting roller 31 suitable for the diameter of the cable to be stripped. If necessary, the height of the rectangular block 322 and the cutter 323 can be further adjusted by adjusting the positioning screw 325 and the compression nut 326 to ensure that the cutter can accurately cut into the outer layer of the cable. Then, place the cable to be stripped between the driving roller 21 and the driven driving roller 24, ensure that the cable is clamped, and place the other end of the cable between the supporting roller 31 and the pressing wheel 321 to ensure that the cable is stably supported. Start the motor 22 to make the driving roller 21 start to rotate, so as to drive the cable to move to the right. As the cable moves, the cutter 323 will cut into the outer layer of the cable to remove the insulating material. During the stripping process, monitor the movement of the cable and the stripping effect, and make fine adjustments if necessary. If it is found that the cutter 323 is worn or damaged, a new cutter 323 can be conveniently replaced through the L-shaped connecting groove 3200. This cable stripping device can efficiently and safely complete the cable stripping work and is applicable to cables with different diameters and types.

[0048] The foregoing has shown and described 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 by the above embodiments. The above embodiments and descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A cable peeling device, comprising a base (1), characterized in that: On the top of the base (1), a driving component (2) and a peeling component (3) are successively arranged from left to right. The driving component (2) includes a first U-shaped frame (20). Between the front and rear sides of the inner wall of the first U-shaped frame (20) and near the bottom, a driving roller (21) is rotatably connected. At the rear side of the first U-shaped frame (20), a motor (22) is provided for driving the driving roller (21) to rotate. Inside the first U-shaped frame (20) and directly above the driving roller (21), an adjustable first U-shaped adjusting plate (23) is provided. Inside the first U-shaped adjusting plate (23), a driven driving roller (24) is rotatably connected. The peeling component (3) includes a second U-shaped frame (30). Between the front and rear sides of the inner wall of the second U-shaped frame (30) and near the bottom, a supporting roller (31) is rotatably connected. Inside the second U-shaped frame (30) and directly above the supporting roller (31), an adjustable peeling adjusting member (32) is provided. The peeling adjusting member (32) includes a second U-shaped adjusting plate (320). Between the front and rear sides of the inner wall of the second U-shaped adjusting plate (320) and near the left and right ends of the bottom, pressing wheels (321) are rotatably connected. Between the front and rear sides of the inner wall of the second U-shaped adjusting plate (320), an adjustable rectangular block (322) is provided. In the middle of the bottom of the rectangular block (322), two positioning convex plates (3220) are symmetrically arranged front and rear. A cutting knife (323) is detachably connected between the two positioning convex plates (3220) by bolts.

2. The cable stripping device according to claim 1, characterized in that: The first U-shaped frame (20) is detachably connected to the top of the base (1) by bolts. In the middle of the top of the first U-shaped frame (20), a first threaded rod (25) is threadedly connected. The bottom end of the first threaded rod (25) is rotatably connected to the middle of the top of the first U-shaped adjusting plate (23).

3. The cable stripping device according to claim 2, wherein: At the top end of the first threaded rod (25), a first knob (26) is provided. The first knob (26) is used for operating to rotate the first threaded rod (25).

4. The cable peeling device according to claim 1, wherein: The first U-shaped adjusting plate (23) is slidably connected inside the first U-shaped frame (20). The front and rear sides of the first U-shaped adjusting plate (23) are respectively in contact with the front and rear sides of the inner wall of the first U-shaped frame (20).

5. The cable stripping device according to claim 1, characterized in that: The second U-shaped frame (30) is detachably connected to the top of the base (1) by bolts. In the middle of the top of the second U-shaped frame (30), a second threaded rod (33) is threadedly connected. The bottom end of the second threaded rod (33) is rotatably connected to the middle of the top of the second U-shaped adjusting plate (320).

6. The cable peeling device according to claim 5, wherein: At the top end of the second threaded rod (33), a second knob (330) is provided. The second knob (330) is used for operating to rotate the second threaded rod (33).

7. The cable peeling device according to claim 1, characterized in that: The second U-shaped adjusting plate (320) is slidably connected inside the second U-shaped frame (30). The front and rear sides of the second U-shaped adjusting plate (320) are respectively in contact with the front and rear sides of the inner wall of the second U-shaped frame (30).

8. The cable peeling device according to claim 1, characterized in that: The driven driving roller (24) is located directly above the driving driving roller (21), and the supporting roller (31) is located directly to the right of the driving driving roller (21).

9. The cable stripping device according to claim 1, characterized in that: L-shaped connecting grooves (3200) are formed on the front and rear sides of the inner wall of the second U-shaped adjusting plate (320). The two L-shaped connecting grooves (3200) are symmetrically arranged in the front and rear. The right end of the L-shaped connecting groove (3200) is an open structure, and the front and rear ends of the rectangular block (322) are respectively slidably connected to the two L-shaped connecting grooves (3200).

10. The cable peeling device according to claim 1, wherein: A fixed side plate (324) is provided between the front and rear sides of the inner wall of the second U-shaped adjusting plate (320) and on the right side. An adjusting groove (3240) is formed on the side of the fixed side plate (324). A positioning screw (325) is provided in the middle of the right side of the rectangular block (322). The right end of the positioning screw (325) passes through the adjusting groove (3240) and is threadedly connected with a compression nut (326). The left side of the compression nut (326) abuts against the right side of the fixed side plate (324).

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