A wire stripping machine
By setting up guide wheel and sprocket assembly in the wire stripper, the synchronous rotation of the driving wheel and driven wheel is achieved, which solves the problems of poor clamping effect and poor cutting quality of existing wire strippers, improves cutting efficiency and tool life, and adapts to wires of different sizes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG WANMA CO LTD
- Filing Date
- 2025-07-04
- Publication Date
- 2026-06-09
AI Technical Summary
Existing wire stripping machines suffer from poor clamping performance, low cutting quality, and difficulty in adapting to wires of different sizes, resulting in low cutting efficiency and shortened tool life.
Guide wheels are installed on the drive shaft and the follower shaft, and cutters are installed on both the upper and lower guide wheels. The synchronous rotation of the drive wheel and the follower wheel is achieved through the sprocket assembly. Combined with the tension of the guide wheel and the tension spring, the synchronous cutting and transmission of the cutter and the wire are ensured, which can adapt to wires of different sizes.
It enables simultaneous cutting of the cutting tool and the wire, improving cutting quality and stability, enhancing adaptability to wires of different sizes, and increasing production efficiency and tool life.
Smart Images

Figure CN224342825U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wire stripping machine technology, and in particular to a wire stripping machine. Background Technology
[0002] For example, publication number "CN119765129A" discloses "a high-voltage cable insulation stripping device," comprising: a base plate with a straightening mechanism on its top and a stripping mechanism located on one side of the straightening mechanism; the straightening mechanism is used to straighten the cable via adjustable straightening wheels, the straightening mechanism including a transmission component and at least one movable straightening wheel assembly, the transmission component being used to drive the straightening wheel assembly to move to adjust the spacing between the straightening wheels; and a stripping mechanism including a stripping cutter disc for stripping the insulation layer of the straightened cable. However, in practical applications, this type of stripping machine cannot well adapt to wires of different sizes, has poor clamping effect during the stripping process, and poor cutting quality of the cutter. Summary of the Invention
[0003] In view of the problems of poor clamping effect and poor cutting quality in the prior art mentioned in the background, this utility model provides a wire stripping machine that can ensure the stability of clamping by setting guide wheels on both the drive shaft and the follower shaft, and setting cutters on both the upper and lower guide wheels. At the same time, it can clamp, transport and cut synchronously, so that the cutting action of the cutter and the transport of the wire are synchronized, thus ensuring the cutting quality.
[0004] To achieve the above objectives, the present invention adopts the following technical solution.
[0005] A wire stripping machine includes a fixed frame with a drive assembly mounted on it. The drive assembly includes a drive shaft with a sprocket assembly connected to its end. The sprocket assembly includes a drive wheel and a driven wheel, with a chain connected to the drive wheel and the driven wheel. The drive wheel is connected to the drive shaft, and the driven wheel is connected to a follower shaft. A guide wheel is connected to the follower shaft and the drive shaft, and a cutter is mounted on the guide wheel. A movable lever wheel, which connects to the fixed frame, is attached to the chain, and a tension spring is connected to the movable lever wheel. In existing technologies, only one rotating cutter is typically used, with a guide wheel positioned below it to achieve the cutting effect. This method only cuts the upper part of the wire. If the outer sheath material is hard, subsequent sheath separation becomes difficult, reducing production efficiency. Furthermore, since only the cutter is positioned at the top, the wire is not actually clamped during the cutting process. This can lead to the wire shifting due to insufficient clamping force, causing the cutting line to tilt and the cutter to experience lateral forces, reducing its lifespan. Additionally, the lack of sufficient clamping in the cutting area results in a passive cutting motion, potentially creating a speed difference between the cutter and the wire, leading to incomplete cutting and affecting cutting quality. Therefore, to address the aforementioned issues, this application incorporates a sprocket assembly that synchronously rotates the drive wheel and driven wheel. A drive shaft and a follower shaft are connected to the drive wheel and driven wheel respectively, and the drive shaft connects to a reducer and motor in the drive assembly for active rotation. When the drive shaft rotates, it drives the follower shaft to rotate synchronously, allowing the wire held between the upper and lower guide wheels for transmission. Since the cutter is mounted on the guide wheel, it rotates synchronously with the guide wheel, ensuring that the cutting rhythm of the cutter and the wire conveying rhythm are synchronized. This guarantees the cutting quality of the wire and the stability of the wire during transport. Furthermore, because cutters are mounted on both the drive shaft and the follower shaft's guide wheels, the upper and lower sides of the wire can be cut simultaneously during the cutting process, allowing for rapid separation of the outer sheath and inner core, ensuring cutting efficiency. Meanwhile, a sprocket assembly is connected to the end of the drive shaft. The chain on the sprocket assembly is connected to a movable lever wheel. The tension of the chain is achieved by the tensioning force of the tension spring, thereby ensuring that the driving wheel and the driven wheel on the sprocket assembly rotate synchronously and ensuring the stability of the transmission.
[0006] Preferably, the sprocket assembly includes a transition wheel, which is located on the driven wheel away from the driving wheel. Both the driving wheel and the transition wheel are connected to chains on both sides, while the driven wheel is connected to a chain only on one side. The transition wheel ensures the stability of the tensioning effect of the sprocket assembly.
[0007] Preferably, the movable lever includes a guide wheel and a rotating rod. The rotating rod is rotatably connected to the fixed frame, the guide wheel is connected to the chain, and the tension spring is hooked to the rotating rod. Because the rotating rod is rotatably connected to the fixed frame, and the guide wheel is connected to the rotating rod, the tension spring pulls the rotating rod, causing the guide wheel to shift and tensioning the chain.
[0008] Preferably, the mounting bracket is equipped with a transverse guide roller for wire feeding. The transverse guide roller on the mounting bracket guides the wire, ensuring its stability and smooth movement. The wire is placed above the transverse guide roller, providing stable support and preventing large swings during wire feeding, thus ensuring feeding stability.
[0009] Preferably, the fixing frame is provided with a movable clamp, and an adjusting handwheel is connected to the movable clamp. The movable clamp on the fixing frame ensures effective fixation of the wire, and the opening and closing of the movable clamp can be adjusted by the handwheel, thus accommodating wires of different sizes and specifications and improving flexibility.
[0010] Preferably, a slide block is connected to the follower shaft, and the fixing frame includes a sliding plate. The slide block is slidably connected to the sliding plate, and a lifting adjustment component is connected to the end of the sliding plate. By providing a slide block on the follower shaft, the follower shaft can move up and down relative to the drive shaft through the sliding connection between the slide block and the sliding plate. This allows adjustment of the relative distance between the follower shaft and the drive shaft, enabling the guide wheel to clamp wires of different specifications and improving the adaptability of the entire device.
[0011] Preferably, the lifting adjustment assembly includes a lifting handwheel connected to a central rotating gear. Lifting gears are connected to both sides of the central rotating gear, and lifting screws are connected to the lifting gears. The lifting screws are connected to a slide block. The lifting assembly includes a lifting handwheel, which rotates to drive the central rotating gear. The rotation of the central rotating gear synchronously drives the lifting gears on both sides to rotate synchronously. The synchronous rotation of the lifting gears on both sides drives the lifting screws on both sides to rotate. The slide blocks connected to the lifting screws can generate relative movement, thereby raising or lowering them relative to the slide plate. This drives the follower shaft connected to the slide block to rise or fall, thus changing the position of the follower shaft relative to the drive shaft. Furthermore, during the movement of the follower shaft, the driven wheel moves, and the sprocket assembly maintains a stable transmission effect under the action of the tension spring.
[0012] Preferably, a transition gear is provided between the intermediate rotating gear and the lifting gear. The transition gear between the intermediate rotating gear and the lifting gear widens the gap between them, thereby accommodating the length of the follower shaft.
[0013] Preferably, the guide wheel includes an umbrella-shaped guide surface. The umbrella-shaped guide surface on the guide wheel allows for better contact with the wire, and also ensures that the wire is centered during cutting. This guarantees that the wire is in contact with the cutter at its center, ensuring a centered cutting line, improving cutting quality and flatness, and reducing radial offset of the wire.
[0014] Preferably, the guide wheel is provided with several protrusions. The protrusions on the guide wheel improve the clamping effect and friction during the cutting and clamping process, thereby ensuring the clamping stability of the wire.
[0015] The beneficial effects of this utility model are as follows:
[0016] (1) It ensures that the cutting rhythm of the tool and the feeding rhythm of the wire are synchronized, thereby ensuring the cutting quality of the wire and the stability of the wire during the feeding process.
[0017] (2) By using the tensioning force of the tension spring, the chain is pulled to tension, thereby ensuring that the driving wheel and the driven wheel on the sprocket assembly rotate synchronously and ensuring the stability of the transmission;
[0018] (3) By using the lifting adjustment component, a relative displacement gap can be generated between the follower shaft and the drive shaft, thereby improving flexibility and adapting to wires of different sizes. Attached Figure Description
[0019] Figure 1 This is a front view of the present invention.
[0020] Figure 2 This is a schematic diagram of the sprocket assembly in this utility model.
[0021] Figure 3 This is a side view of the present invention.
[0022] Figure 4 This is a schematic diagram of the guide wheel in this utility model.
[0023] Figure 5 This is a schematic diagram of the structure of Example 2.
[0024] Figure 6 This is a top view of the lifting adjustment component in Embodiment 2.
[0025] In the picture:
[0026] 1 fixed frame, 11 sliding base, 12 sliding plate;
[0027] 2 Drive assembly, 21 Drive shaft, 22 Motor, 23 Reducer, 24 Follower shaft, 25 Guide wheel, 251 Cutting tool, 252 Umbrella guide surface, 253 Convex strip;
[0028] 3. Sprocket assembly, 31. Drive sprocket, 32. Driven sprocket, 33. Chain, 34. Movable lever sprocket, 341. Guide wheel, 342. Rotating lever, 35. Spring, 36. Transition wheel;
[0029] 4 incoming transverse guide rollers;
[0030] 5. Movable clamp; 51. Adjustable handwheel;
[0031] 6. Lifting adjustment assembly, 61. Lifting handwheel, 62. Intermediate rotating gear, 63. Lifting gear, 64. Lifting lead screw, 65. Transition gear. Detailed Implementation
[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0033] Example 1:
[0034] like Figure 1 , 2As shown, a wire stripping machine includes a fixed frame 1, a drive assembly 2 on the fixed frame 1, a drive shaft 21, a sprocket assembly 3 connected to the end of the drive shaft 21, a drive wheel 31 and a driven wheel 32, a chain 33 connected to the drive wheel 31 and the driven wheel 32, the drive wheel 31 connected to the drive shaft 21, the driven wheel 32 connected to a follower shaft 24, a guide wheel 25 connected to the follower shaft 24 and the drive shaft 21, a cutter 251 is provided on the guide wheel 25, a movable lever wheel 34 connected to the fixed frame 1 is attached to the chain 33, and a tension spring 35 is connected to the movable lever wheel 34. In existing technologies, only one rotating cutter 251 is typically used, with a guide wheel 341 positioned below the cutter 251 to achieve the cutting effect. Therefore, cutting can only be performed on the upper part of the wire. If the outer sheath material of the wire is hard, subsequent sheath separation is difficult, reducing production efficiency. Furthermore, since only the cutter 251 is positioned at the top, the wire is not actually clamped during the cutting process. This can lead to the wire shifting due to insufficient clamping force, causing the cutting line to tilt and the cutter 251 to experience lateral force, reducing its lifespan. Additionally, because sufficient clamping is not achieved in the cutting area, the movement of the cutter 251 becomes passive, potentially resulting in a speed difference between the cutter 251 and the wire, leading to incomplete cutting and affecting cutting quality. Therefore, to address the aforementioned problems, this application includes a sprocket assembly 3, which enables the driving wheel 31 and driven wheel 32 to rotate synchronously. A drive shaft 21 and a follower shaft 24 are connected to the driving wheel 31 and driven wheel 32 respectively. The drive shaft 21 connects to the reducer 23 and motor 22 in the drive assembly 2 for active rotation. When the drive shaft 21 rotates, it drives the follower shaft 24 to rotate synchronously, allowing the wire held between the upper and lower guide wheels 25 to be transmitted. (The last sentence appears to be incomplete and possibly refers to a different application.) The cutter 251 is mounted on the guide wheel 25, enabling the cutter 251 and the guide wheel 25 to rotate synchronously. This ensures that the cutting rhythm of the cutter 251 and the wire feeding rhythm are synchronized, thereby guaranteeing the cutting quality and stability of the wire during feeding. Furthermore, since the cutter 251 is mounted on both the drive shaft 21 and the guide wheel 25 of the follower shaft 24, the upper and lower sides of the wire can be cut simultaneously during the cutting process, allowing for rapid separation of the outer sheath and inner core, ensuring cutting efficiency. Simultaneously, a sprocket assembly 3 is connected to the end of the drive shaft 21. The chain 33 on the sprocket assembly 3 is connected to a movable lever wheel 34. The tension spring 35 pulls the chain 33 to tension, ensuring that the driving wheel 31 and the driven wheel 32 on the sprocket assembly 3 rotate synchronously, guaranteeing transmission stability.
[0035] like Figure 2As shown, the sprocket assembly 3 includes a transition wheel 36, which is located on the driven wheel 32 away from the driving wheel 31. Both the driving wheel 31 and the transition wheel 36 are connected to chains 33 on both sides, while the driven wheel 32 is connected to a chain 33 on only one side. The sprocket assembly 3 includes the transition wheel 36, which ensures the stability of the tensioning effect of the sprocket assembly 3.
[0036] like Figure 1 , 2 As shown, the movable lever 34 includes a guide wheel 341 and a rotating rod 342. The rotating rod 342 is rotatably connected to the fixed frame 1. The guide wheel 341 is connected to the chain 33, and the tension spring 35 is hooked to the rotating rod 342. The rotating rod 342 is rotatably connected to the fixed frame 1, and the guide wheel 341 is connected to the rotating rod 342. The guide wheel 341 can connect to the chain 33, thereby pulling the rotating rod 342 through the tension spring 35, causing the guide wheel 341 to deflect and tensioning the chain 33.
[0037] like Figure 3 As shown, the mounting frame 1 is equipped with a transverse guide wheel 4 for wire feeding. The transverse guide wheel 4 on the mounting frame 1 can guide the wire, thereby ensuring the stability and smoothness of the wire's movement. The wire is placed above the transverse guide wheel 4, which can stably support the wire when it is placed on the transverse guide wheel, avoiding large swings during the wire feeding process and thus ensuring the stability of the wire feeding.
[0038] like Figure 3 As shown, a movable clamping plate 5 is provided on the fixed frame 1, and an adjusting handwheel 51 is connected to the movable clamping plate 5. The movable clamping plate 5 on the fixed frame 1 can ensure the fixing effect of the wire, and the opening and closing of the movable clamping plate 5 can be adjusted by adjusting the handwheel 51, thereby accommodating wires of different sizes and specifications and improving flexibility.
[0039] like Figure 4 As shown, the guide wheel 25 includes an umbrella-shaped guide surface 252. The umbrella-shaped guide surface 252 on the guide wheel 25 allows for better contact with the wire, and also ensures that the wire is centered during cutting. This guarantees that the wire is in contact with the cutter 251 at its center, ensuring a centered cutting line, improving cutting quality and flatness, and reducing radial offset of the wire.
[0040] like Figure 4 As shown, the guide wheel 25 is provided with several protrusions 253. The protrusions 253 on the guide wheel 25 can improve the clamping effect and friction during the cutting and clamping process, thereby ensuring the clamping stability of the wire.
[0041] Example 2:
[0042] like Figure 5 As shown, a slide block 11 is connected to the follower shaft 24, and the fixed frame 1 includes a slide plate 12. The slide block 11 is slidably connected to the slide plate 12, and a lifting adjustment component 6 is connected to the end of the slide plate 12. By setting the slide block 11 on the follower shaft 24, the follower shaft 24 can move up and down relative to the drive shaft 21 through the sliding connection between the slide block 11 and the slide plate 12. This allows the relative distance between the follower shaft 24 and the drive shaft 21 to be adjusted, thereby enabling the guide wheel 25 to clamp wires of different specifications and improving the adaptability of the entire device.
[0043] like Figure 5 , 6 As shown, the lifting adjustment assembly 6 includes a lifting handwheel 61, which is connected to a central rotating gear 62. Lifting gears 63 are connected to both sides of the central rotating gear 62, and lifting screws 64 are connected to the lifting gears 63. The lifting screws 64 are connected to the slide block 11. The lifting assembly includes a lifting handwheel 61, which can rotate to drive the central rotating gear 62. The rotation of the central rotating gear 62 synchronously drives the lifting gears 63 on both sides to rotate synchronously. The synchronous rotation of the lifting gears 63 on both sides drives the lifting screws 64 on both sides to rotate. The slide block 11 connected to the lifting screw 64 can generate relative movement, thereby raising or lowering relative to the slide plate 12. This drives the follower shaft 24 connected to the slide block 11 to rise or fall, thereby changing the position of the follower shaft 24 relative to the drive shaft 21. Furthermore, during the movement of the follower shaft 24, it drives the driven wheel 32 to move. The sprocket assembly 3 maintains a stable transmission effect under the drive of the tension spring 35.
[0044] like Figure 6 As shown, a transition gear 65 is provided between the intermediate rotating gear 62 and the lifting gear 63. The transition gear 65 is provided between the intermediate rotating gear 62 and the lifting gear 63 to widen the gap between the intermediate gear and the lifting gear 63, thereby accommodating the length of the follower shaft 24.
[0045] This embodiment also includes a fixed frame 1, on which a drive assembly 2 is mounted. The drive assembly 2 includes a drive shaft 21, and a sprocket assembly 3 is connected to the end of the drive shaft 21. The sprocket assembly 3 includes a drive wheel 31 and a driven wheel 32, and a chain 33 is connected to the drive wheel 31 and the driven wheel 32. The drive wheel 31 is connected to the drive shaft 21, and the driven wheel 32 is connected to a follower shaft 24. A guide wheel 25 is connected to the follower shaft 24 and the drive shaft 21, and a cutter 251 is mounted on the guide wheel 25. A movable lever wheel 34, which is connected to the fixed frame 1, is attached to the chain 33, and a tension spring 35 is connected to the movable lever wheel 34. The sprocket assembly 3 includes a transition wheel 36, which is located on the side of the driven wheel 32 away from the drive wheel 31. Both sides of the drive wheel 31 and the transition wheel 36 are connected to the chain 33, while only one side of the driven wheel 32 is connected to the chain 33. The movable lever 34 includes a guide wheel 341 and a rotating rod 342. The rotating rod 342 is rotatably connected to the fixed frame 1. The guide wheel 341 is connected to a chain 33, and a tension spring 35 hooks onto the rotating rod 342. A transverse guide wheel 4 for wire inlet is provided on the fixed frame 1. A movable clamping plate 5 is provided on the fixed frame 1, and an adjusting handwheel 51 is connected to the movable clamping plate 5. The guide wheel 25 includes an umbrella-shaped guide surface 252. Several protrusions 253 are provided on the guide wheel 25.
[0046] In existing technologies, only one rotating cutter 251 is typically used, with a guide wheel 341 positioned below the cutter 251 to achieve the cutting effect. Therefore, cutting can only be performed on the upper part of the wire. If the outer sheath material of the wire is hard, subsequent sheath separation is difficult, reducing production efficiency. Furthermore, since only the cutter 251 is positioned at the top, the wire is not actually clamped during the cutting process. This can lead to the wire shifting due to insufficient clamping force, causing the cutting line to tilt and the cutter 251 to experience lateral force, reducing its lifespan. Additionally, because sufficient clamping is not achieved in the cutting area, the movement of the cutter 251 becomes passive, potentially resulting in a speed difference between the cutter 251 and the wire, leading to incomplete cutting and affecting cutting quality. Therefore, to address the aforementioned problems, this application includes a sprocket assembly 3, which enables the driving wheel 31 and driven wheel 32 to rotate synchronously. A drive shaft 21 and a follower shaft 24 are connected to the driving wheel 31 and driven wheel 32 respectively. The drive shaft 21 connects to the reducer 23 and motor 22 in the drive assembly 2 for active rotation. When the drive shaft 21 rotates, it drives the follower shaft 24 to rotate synchronously, allowing the wire held between the upper and lower guide wheels 25 to be transmitted. (The last sentence appears to be incomplete and possibly refers to a different application.) The cutter 251 is mounted on the guide wheel 25, enabling the cutter 251 and the guide wheel 25 to rotate synchronously. This ensures that the cutting rhythm of the cutter 251 and the wire feeding rhythm are synchronized, thereby guaranteeing the cutting quality and stability of the wire during feeding. Furthermore, since the cutter 251 is mounted on both the drive shaft 21 and the guide wheel 25 of the follower shaft 24, the upper and lower sides of the wire can be cut simultaneously during the cutting process, allowing for rapid separation of the outer sheath and inner core, ensuring cutting efficiency. Simultaneously, a sprocket assembly 3 is connected to the end of the drive shaft 21. The chain 33 on the sprocket assembly 3 is connected to a movable lever wheel 34. The tension spring 35 pulls the chain 33 to tension, ensuring that the driving wheel 31 and the driven wheel 32 on the sprocket assembly 3 rotate synchronously, guaranteeing transmission stability.
[0047] The sprocket assembly 3 includes a transition wheel 36, which ensures the stability of the tensioning effect of the sprocket assembly 3. A rotating rod 342 is rotatably connected to the fixed frame 1. A guide wheel 341 is connected to the rotating rod 342, and the guide wheel 341 can engage the chain 33. The tension spring 35 pulls the rotating rod 342, causing the guide wheel 341 to shift and tension the chain 33. A transverse guide wheel 4 on the fixed frame 1 guides the wire, ensuring the stability and smoothness of its movement. The wire is placed above the transverse guide wheel 4, providing stable support and preventing large swings during wire feeding, thus ensuring stability. A movable clamp 5 on the fixed frame 1 secures the wire, and the opening and closing of the movable clamp 5 can be adjusted by the handwheel 51, accommodating wires of different sizes and specifications, thus improving flexibility. An umbrella-shaped guide surface 252 is provided on the guide wheel 25. This guide surface 252 allows for better contact with the wire, and also ensures the wire remains centered during cutting. This guarantees that the wire is in contact with the cutter 251 at its center, ensuring a centered cutting line, improving cutting quality and flatness, and reducing radial offset. A raised rib 253 is also provided on the guide wheel 25. This raised rib 253 enhances the clamping effect and friction during cutting and holding, thereby ensuring the stability of the wire clamping.
Claims
1. A wire stripping machine, characterized in that, The device includes a fixed frame, on which a drive assembly is mounted. The drive assembly includes a drive shaft, and a sprocket assembly is connected to the end of the drive shaft. The sprocket assembly includes a drive wheel and a driven wheel, and a chain is connected to the drive wheel and the driven wheel. The drive wheel is connected to the drive shaft, and a follower shaft is connected to the driven wheel and the drive shaft. A guide wheel is mounted on the guide wheel, and a cutter is mounted on the guide wheel. A movable lever wheel, which is connected to the fixed frame, is attached to the chain, and a tension spring is connected to the movable lever wheel.
2. The wire stripping machine according to claim 1, characterized in that, The sprocket assembly includes a transition wheel, which is located on the driven wheel away from the driving wheel. Both sides of the driving wheel and the transition wheel are connected to chains, while the driven wheel is connected to a chain only on one side.
3. A wire stripping machine according to claim 1, characterized in that, The movable lever wheel includes a guide wheel and a rotating rod. The rotating rod is rotatably connected to the fixed frame. The guide wheel is connected to a chain, and the tension spring is hooked to the rotating rod.
4. A wire stripping machine according to claim 1, characterized in that, The mounting frame is equipped with a transverse guide wheel for the incoming line.
5. A wire stripping machine according to claim 1, characterized in that, The fixed frame is equipped with a movable clamp, and an adjusting handwheel is connected to the movable clamp.
6. A wire stripping machine according to claim 1, characterized in that, A slide block is connected to the follower shaft, the fixed frame includes a slide plate, the slide block is slidably connected to the slide plate, and a lifting adjustment component is connected to the end of the slide plate.
7. A wire stripping machine according to claim 6, characterized in that, The lifting adjustment assembly includes a lifting handwheel, which is connected to a central rotating gear. Lifting gears are connected to both sides of the central rotating gear, and lifting screws are connected to the lifting gears. The lifting screws are connected to a slide block.
8. A wire stripping machine according to claim 7, characterized in that, A transition gear is provided between the intermediate rotating gear and the lifting gear.
9. A wire stripping machine according to any one of claims 1-8, characterized in that, The guide wheel includes an umbrella-shaped guide surface.
10. A wire stripping machine according to any one of claims 1-8, characterized in that, The guide wheel is provided with several protruding strips.