Outer sheath stripping device

Abstract

The utility model relates to an outer sheath stripping device, and belongs to the field of power cables. The outer sheath stripping device comprises an inner tube, a first cutter group, a second cutter group and a driving mechanism, the first cutter set and the second cutter set are sequentially arranged in the axial direction of the inner pipe, the first cutter set is provided with a first cutting edge, the second cutter set is provided with a second cutting edge, the inner circumferential side of the inner pipe is provided with a first through hole allowing the first cutting edge to penetrate through and a second through hole allowing the second cutting edge to penetrate through, and the first through hole and the second through hole are sequentially arranged in the axial direction of the inner pipe. The driving mechanism is arranged on the periphery of the inner pipe and used for driving one of the first cutting edge and the second cutting edge to protrude out of the inner circumferential side of the inner pipe. Wherein the first blade is parallel to the axial direction of the inner pipe, and the second blade is perpendicular to the axial direction of the inner pipe.

Description

A device for peeling off an outer sheath Technical Field

[0001] This utility model belongs to the field of power cables, and specifically relates to a stripping device for outer sheaths. Background Technology

[0002] With the rapid advancement of urbanization, power cable networks have achieved comprehensive coverage. Regarding the composition of power cable systems, the cable itself and its supporting key components such as terminals and intermediate joints are typically prefabricated in a standardized industrial environment by qualified manufacturers. However, the installation of accessories at cable connection points, due to complex adaptability requirements for various operating conditions, must be carried out based on on-site construction conditions.

[0003] Existing wire stripping equipment can generally only cut open the outer sheath. When it comes to cutting the outer sheath, additional equipment or devices (such as scissors, vises, etc.) are required. Therefore, when stripping the outer sheath, the device needs to be switched, which makes it inconvenient to strip the outer sheath continuously. Summary of the Invention

[0004] In view of the above problems, this application provides an outer sheath peeling device that can independently cut and sever the outer sheath, thereby facilitating continuous peeling of the outer sheath.

[0005] This application provides a device for peeling off an outer sheath. The device includes an inner tube, a first blade assembly, a second blade assembly, and a driving mechanism. The first and second blade assemblies are arranged sequentially along the axial direction of the inner tube. The first blade assembly has a first cutting edge, and the second blade assembly has a second cutting edge. The inner circumferential side of the inner tube has a first through hole for the first cutting edge to pass through and a second through hole for the second cutting edge to pass through. The first and second through holes are arranged sequentially along the axial direction of the inner tube. The driving mechanism is disposed on the outer circumference of the inner tube and is used to drive one of the first and second cutting edges to protrude from the inner circumferential side of the inner tube. The first cutting edge is parallel to the axial direction of the inner tube, and the second cutting edge is perpendicular to the axial direction of the inner tube.

[0006] Specifically, since the first cutting edge is parallel to the axis of the inner tube and the second cutting edge is perpendicular to the axis of the inner tube,

[0007] During operation, a driving mechanism causes the first cutting edge to protrude from the inner circumference of the inner tube, thereby positioning the second cutting edge within the second through hole. As the cable moves axially along the inner tube, the first cutting edge cuts the outer sheath of the cable in the direction of its movement. After cutting to the desired length, the driving mechanism causes the second cutting edge to protrude from the inner circumference of the inner tube, positioning the first cutting edge within the first through hole. By rotating the inner tube relative to the cable, the second cutting edge circumferentially cuts off the outer sheath. This allows for independent cutting and severing of the outer sheath without the need to change equipment.

[0008] In the above technical solution, by making the first cutting edge parallel to the axial direction of the inner tube and the second cutting edge perpendicular to the axial direction of the inner tube, and by using a driving mechanism to drive one of the first and second cutting edges to protrude from the inner circumference of the inner tube, the outer sheath can be cut and slit independently without changing the equipment, thus facilitating the continuous peeling of the outer sheath.

[0009] In some embodiments, the driving mechanism includes a driving member, a first rack, a second rack, and a gear. The driving member is used to drive the first cutting edge through the first through hole and protrude from the inner circumference of the inner tube, or to drive the first cutting edge through the first through hole and protrude from the inner circumference of the inner tube; the first rack is connected to the first blade assembly and extends radially along the inner tube; the second rack is connected to the second blade assembly and extends radially along the inner tube; the gear is rotatably disposed on the outer circumference of the inner tube, along the axial direction of the inner tube, the gear is located between the first rack and the second rack, and meshes with both the first rack and the second rack.

[0010] Specifically, during the process of the driving component driving the first cutting edge to pass through the first through hole and protrude from the inner circumference of the inner tube, the first rack moves towards the inner tube, thereby causing the first rack to drive the second rack away from the inner tube via the gear. This, in turn, positions the second cutting edge within the second through hole, preventing resistance when the second cutting edge cuts through the outer sheath, thus facilitating the first cutting edge's cutting through the outer sheath. Conversely, during the process of the driving component driving the second cutting edge to pass through the second through hole and protrude from the inner circumference of the inner tube, the second rack moves towards the inner tube, thereby causing the second rack to drive the first rack away from the inner tube via the gear. This, in turn, positions the first cutting edge within the first through hole, preventing resistance when the first cutting edge cuts through the outer sheath, thus facilitating the second cutting edge's cutting through the outer sheath.

[0011] In some embodiments, the drive mechanism further includes a torsion spring, the gear being elastically connected to the inner tube via the torsion spring, the torsion spring providing an elastic force to cause the gear to rotate to a zero position, the gear being configured such that, at the zero position, the first rack drives the first cutting edge to be located within the first through hole, and the second rack drives the second cutting edge to be located within the second through hole.

[0012] In the above technical solution, by setting a torsion spring, when the driving member does not apply external force to the first and second cutting edges to drive the first and second cutting edges to move, the torsion spring can drive the gear to rotate to the zero position, so that the cable can pass through the inner tube. This makes it easier to move the inner tube to the position to be stripped when the outer sheath of the middle of the cable needs to be stripped, thereby increasing the applicability of the outer sheath stripping device.

[0013] In some embodiments, the driving member includes an outer tube, a first protrusion, and a second protrusion. The outer tube is rotatably disposed outside the inner tube; the first protrusion protrudes from the inner circumference of the outer tube, and the outer tube rotates about the axis of the inner tube in a first rotation direction to abut against the first blade assembly, thereby causing the first blade to protrude from the inner wall of the inner tube; the second protrusion protrudes from the inner circumference of the outer tube, and the outer tube rotates about the axis of the inner tube in a second rotation direction to abut against the second blade assembly, thereby causing the second blade to protrude from the inner wall of the inner tube, wherein the first rotation direction is opposite to the second rotation direction.

[0014] In the above technical solution, by setting an outer tube, a first protrusion and a second protrusion, the operator can adjust the position of the first blade and the second blade by rotating them in different directions. The structure is simple and easy to implement.

[0015] In some embodiments, on a plane perpendicular to the axis of the inner tube, the orthographic projections of the first protrusion and the second protrusion are spaced apart circumferentially along the inner tube.

[0016] In the above technical solution, by setting the orthographic projection of the first protrusion and the orthographic projection of the second protrusion at intervals along the circumference of the inner tube on a plane perpendicular to the axis of the inner tube, a gap exists between the first protrusion and the second protrusion, so that within the rotation range of the appearance, there is a position where the first protrusion does not abut against the first blade group and the second protrusion does not abut against the second blade group, thereby facilitating the torsion spring to drive the gear to the zero position.

[0017] In some embodiments, the first protrusion is provided with a first guide surface on the side facing the first blade assembly along the first rotation direction, and the first protrusion rotates along the first rotation direction so that the first guide surface guides the first blade to protrude from the inner circumferential side of the inner tube; the second protrusion is provided with a second guide surface on the side facing the second blade assembly along the second rotation direction, and the second protrusion rotates along the second rotation direction so that the second guide surface guides the second blade to protrude from the inner circumferential side of the inner tube.

[0018] In some embodiments, the inner tube includes a body and a third protrusion, the third protrusion protruding from the outer periphery of the body, and the inner periphery of the outer tube abutting against the third protrusion.

[0019] In the above technical solution, the outer tube is rotated to be positioned outside the inner tube by abutting the inner circumferential side of the outer tube with the third protrusion. The structure is simple and easy to implement.

[0020] In some embodiments, the outer peripheral side of the third protrusion is recessed to form a mounting groove, and the opposite ends of the gear are respectively rotatably disposed on the two groove walls of the mounting groove in the circumferential direction of the inner tube.

[0021] In the above technical solution, a mounting groove is provided on the third protrusion to facilitate the installation of gears, and the structure is simple and easy to implement.

[0022] In some embodiments, the drive member further includes a limiting block; the outer peripheral side of the third protrusion is recessed to form a limiting groove, the limiting block is received in the limiting groove, the limiting groove has a first wall and a second wall disposed opposite to each other in the circumferential direction of the inner tube; the limiting block abuts against the first wall along the first rotation direction, so that the first protrusion abuts against the first blade assembly; the limiting block abuts against the second wall along the second rotation direction, so that the second protrusion abuts against the second blade assembly.

[0023] In the above technical solution, by setting a limiting groove and a limiting block, the rotation of the outer tube is restricted when the first protrusion abuts against the first blade group and when the second protrusion abuts against the second blade group.

[0024] In some embodiments, when the second blade protrudes beyond the inner circumference of the inner tube, the size of the second blade protruding beyond the inner circumference of the inner tube gradually decreases along the second rotation direction.

[0025] Specifically, by rotating the outer tube in the second rotation direction, the limiting block abuts against the second wall of the limiting groove, causing the second cutting edge to protrude from the inner circumference of the inner tube. Since the limiting block abuts against the second wall of the limiting groove, the inner tube is also driven to continue rotating as the outer tube continues to rotate in the second rotation direction. This cuts off the outer sheath, allowing the operator to cut it off simply by rotating in the second rotation direction, simplifying the operation and reducing accidental activation. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 is a schematic diagram of the structure of a peeling device for the outer sheath provided in an embodiment of the present invention when the first blade protrudes from the inner side of the inner tube;

[0028] Figure 2 is a schematic diagram of the structure of a peeling device for the outer sheath provided in an embodiment of the present invention when the second blade protrudes from the inner side of the inner tube;

[0029] Figure 3 is a schematic diagram of the structure of the first cutting head provided in an embodiment of the present utility model;

[0030] Figure 4 is a schematic diagram of the structure of the second cutter head provided in an embodiment of the present invention;

[0031] Figure 5 is an exploded view of a peeling device for an outer sheath provided in an embodiment of this utility model;

[0032] Figure 6 is a cross-sectional view of a peeling device for removing an outer sheath provided in an embodiment of the present invention, with the first blade protruding from the inner side of the inner tube;

[0033] Figure 7 is a cross-sectional view of a peeling device for removing an outer sheath provided in an embodiment of the present invention when the second blade protrudes from the inner side of the inner tube.

[0034] Figure 8 is a structural schematic diagram of the driving component provided in an embodiment of this utility model;

[0035] Figure 9 is a cross-sectional view of AA in Figure 6;

[0036] Figure 10 is a cross-sectional view of BB in Figure 7;

[0037] Figure 11 is a schematic diagram of the inner tube provided in an embodiment of this utility model. Detailed Implementation

[0038] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0039] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] With the rapid advancement of urbanization, power cable networks have achieved comprehensive coverage. Regarding the composition of power cable systems, the cable itself and its supporting key components such as terminals and intermediate joints are typically prefabricated in a standardized industrial environment by qualified manufacturers. However, the installation of accessories at cable connection points, due to complex adaptability requirements for various operating conditions, must be carried out based on on-site construction conditions.

[0043] Existing wire stripping equipment can generally only cut open the outer sheath. When it comes to cutting the outer sheath, additional equipment or devices (such as scissors, vises, etc.) are required. Therefore, when stripping the outer sheath, the device needs to be switched, which makes it inconvenient to strip the outer sheath continuously.

[0044] To solve the above-mentioned technical problems, referring to Figures 1-4, this application provides an outer sheath peeling device, including an inner tube 10, a first blade assembly 20, a second blade assembly 30, and a drive mechanism 40; the first blade assembly 20 and the second blade assembly 30 are arranged sequentially along the axial direction of the inner tube 10, the first blade assembly 20 has a first blade 21, and the second blade assembly 30 has a second blade 31. The inner circumferential side of the inner tube 10 has a first through hole 101 for the first blade 21 to pass through and a second through hole 102 for the second blade 31 to pass through, the first through hole 101 and the second through hole 102 are arranged sequentially along the axial direction of the inner tube 10; the drive mechanism 40 is disposed on the outer circumference of the inner tube 10, and the drive mechanism 40 is used to drive one of the first blade 21 and the second blade 31 to protrude from the inner circumferential side of the inner tube 10; wherein, the first blade 21 is parallel to the axial direction of the inner tube 10, and the second blade 31 is perpendicular to the axial direction of the inner tube 10.

[0045] In some embodiments, the first blade group 20 and the second blade group 30 can be multiple groups arranged circumferentially around the inner tube 10.

[0046] For example, the first blade assembly 20 may include a first blade 21 and a first baffle 22. The first baffle 22 is located outside the inner tube 10, and the cross-sectional area of ​​the first baffle 22 perpendicular to the radial direction of the inner tube 10 should be larger than the cross-section of the first through hole 101 to prevent the first blade assembly 20 from falling into the inner tube 10. The second blade assembly 30 may include a second blade 31 and a second baffle 32. The second baffle 32 is located outside the inner tube 10, and the cross-sectional area of ​​the second baffle 32 perpendicular to the radial direction of the inner tube 10 should be larger than the cross-section of the second through hole 102 to prevent the second blade assembly 30 from falling into the inner tube 10.

[0047] Specifically, since the first cutting edge 21 is parallel to the axial direction of the inner tube 10, and the second cutting edge 31 is perpendicular to the axial direction of the inner tube 10,

[0048] During use, the drive mechanism 40 causes the first cutting edge 21 to protrude from the inner circumference of the inner tube 10, thereby positioning the second cutting edge 31 within the second through hole 102. This allows the first cutting edge 21 to cut the outer sheath of the cable along its axial direction as the cable moves along the inner tube 10. After cutting to the required length, the drive mechanism 40 causes the second cutting edge 31 to protrude from the inner circumference of the inner tube 10, positioning the first cutting edge 21 within the first through hole 101. By rotating the inner tube 10 relative to the cable, the second cutting edge 31 circumferentially cuts off the outer sheath. Thus, the cutting and severing of the outer sheath can be completed independently without changing equipment.

[0049] In this technical solution, by making the first cutting edge 21 parallel to the axial direction of the inner tube 10 and the second cutting edge 31 perpendicular to the axial direction of the inner tube 10, and by using the driving mechanism 40 to drive one of the first cutting edge 21 and the second cutting edge 31 to protrude from the inner circumference of the inner tube 10, the outer sheath can be cut and slit independently without changing the equipment, thus facilitating the continuous peeling of the outer sheath.

[0050] According to some embodiments of this application, referring to Figures 5-7, the drive mechanism 40 includes a drive member 41, a first rack 42, a second rack 43, and a gear 44. The drive member 41 is used to drive the first cutting edge 21 through the first through hole 101 and protrude from the inner circumference of the inner tube 10, or to drive the first cutting edge 21 through the first through hole 101 and protrude from the inner circumference of the inner tube 10; the first rack 42 is connected to the first blade assembly 20 and extends radially along the inner tube 10; the second rack 43 is connected to the second blade assembly 30 and extends radially along the inner tube 10; the gear 44 is rotatably disposed on the outer circumference of the inner tube 10, and along the axial direction of the inner tube 10, the gear 44 is located between the first rack 42 and the second rack 43, and meshes with both the first rack 42 and the second rack 43.

[0051] For example, the first rack 42 is provided with teeth on the side facing the second rack 43, and the second rack 43 is provided with teeth on the side facing the first rack 42.

[0052] Specifically, during the process of the driving member 41 driving the first cutting edge 21 through the first through hole 101 and protruding from the inner circumference of the inner tube 10, the first rack 42 moves towards the inner tube 10, thereby causing the first rack 42 to drive the second rack 43 away from the inner tube 10 via the gear 44. This, in turn, causes the second cutting edge 31 to be positioned within the second through hole 102, preventing the second cutting edge 31 from generating resistance when the first cutting edge 21 cuts through the outer sheath, thus facilitating the first cutting edge 21 to cut through the outer sheath. During the process of the driving member 41 driving the second cutting edge 31 through the second through hole 102 and protruding from the inner circumference of the inner tube 10, the second rack 43 moves towards the inner tube 10, thereby causing the second rack 43 to drive the first rack 42 away from the inner tube 10 via the gear 44. This, in turn, causes the first cutting edge 21 to be positioned within the first through hole 101, preventing the first cutting edge 21 from generating resistance when the second cutting edge 31 cuts through the outer sheath, thus facilitating the second cutting edge 31 to cut through the outer sheath.

[0053] According to some embodiments of this application, the drive mechanism 40 further includes a torsion spring (not shown in the figure), and the gear 44 is elastically connected to the inner tube 10 through the torsion spring. The torsion spring is used to provide elastic force so that the gear 44 rotates to the zero position. The gear 44 is configured such that when it is at the zero position, the first rack 42 drives the first cutting edge 21 to be located in the first through hole 101, and the second rack 43 drives the second cutting edge 31 to be located in the second through hole 102.

[0054] In some embodiments, an mounting hole is provided on the outside of the inner tube 10, the inner circumference of the torsion spring is connected to the rotating shaft of the gear 44, and the outer circumference of the torsion spring is connected to the wall of the mounting hole.

[0055] In this technical solution, a torsion spring is provided so that when the driving member 41 does not apply external force to the first blade 21 and the second blade 31 to drive the first blade 21 and the second blade 31 to move, the torsion spring can drive the gear 44 to rotate to the zero position, so that the cable can pass through the inner tube 10. This makes it easier to move the inner tube 10 to the position to be stripped when the outer sheath of the middle of the cable needs to be stripped, thereby increasing the applicability of the outer sheath stripping device.

[0056] According to some embodiments of this application, referring to Figures 8-10, the driving member 41 includes an outer tube 411, a first protrusion 412, and a second protrusion 413. The outer tube 411 is rotatably disposed on the outside of the inner tube 10; the first protrusion 412 protrudes from the inner circumference of the outer tube 411, and the outer tube 411 rotates about the axis of the inner tube 10 in a first rotation direction W1 so that the first protrusion 412 abuts against the first blade assembly 20, and drives the first blade 21 to protrude from the inner wall of the inner tube 10; the second protrusion 413 protrudes from the inner circumference of the outer tube 411, and the outer tube 411 rotates about the axis of the inner tube 10 in a second rotation direction W2 so that the second protrusion 413 abuts against the second blade assembly 30, and drives the second blade 31 to protrude from the inner wall of the inner tube 10, wherein the first rotation direction W1 and the second rotation direction W2 are opposite.

[0057] For example, referring to FIG5, a stripping device for an outer sheath further includes a connecting end plate 50, which is disposed at one end of the outer tube 411 and the inner tube 10, and is fixedly connected to one of the outer tube 411 and the inner tube 10 and rotatably connected to the other.

[0058] In this technical solution, by setting an outer tube 411, a first protrusion 412 and a second protrusion 413, the operator can adjust the position of the first blade 21 and the second blade 31 by rotating them in different directions. The structure is simple and easy to implement.

[0059] According to some embodiments of this application, please refer to FIG8. On a plane perpendicular to the axis of the inner tube 10, the orthographic projections of the first protrusion 412 and the second protrusion 413 are spaced apart along the circumference of the inner tube 10.

[0060] In this technical solution, the orthographic projections of the first protrusion 412 and the second protrusion 413 are spaced apart along the circumference of the inner tube 10 on a plane perpendicular to the axis of the inner tube 10, so that there is a gap between the first protrusion 412 and the second protrusion 413. This creates a position within the rotation range of the appearance where the first protrusion 412 does not abut against the first blade assembly 20 and the second protrusion 413 does not abut against the second blade assembly 30, thus facilitating the torsion spring to drive the gear 44 to the zero position.

[0061] According to some embodiments of this application, please refer to Figures 8-10. A first guide surface is provided on the side of the first protrusion 412 facing the first blade assembly 20 along the first rotation direction W1. The first protrusion 412 rotates along the first rotation direction W1 so that the first guide surface guides the first blade 21 to protrude from the inner circumference of the inner tube 10. A second guide surface is provided on the side of the second protrusion 413 facing the second blade assembly 30 along the second rotation direction W2. The second protrusion 413 rotates along the second rotation direction W2 so that the second guide surface guides the second blade 31 to protrude from the inner circumference of the inner tube 10.

[0062] According to some embodiments of this application, the inner tube 10 includes a body 11 and a third protrusion 12, the third protrusion 12 protruding from the outer periphery of the body 11, and the inner periphery of the outer tube 411 abutting against the third protrusion 12.

[0063] In this technical solution, the outer tube 411 is rotatably mounted on the outside of the inner tube 10 by abutting the inner circumferential side of the outer tube 411 with the third protrusion 12. The structure is simple and easy to implement.

[0064] According to some embodiments of this application, referring to Figures 5 and 11, the outer peripheral side of the third protrusion 12 is recessed to form a mounting groove 121, and the opposite ends of the gear 44 are respectively rotatably disposed on the two groove walls of the mounting groove 121 in the circumferential direction of the inner tube 10.

[0065] In this technical solution, the mounting groove 121 is provided on the third protrusion 12 to facilitate the installation of the gear 44, which is simple in structure and easy to implement.

[0066] According to some embodiments of this application, referring to Figures 5, 8 and 11, the drive member 41 further includes a limiting block 414; the outer peripheral side of the third protrusion 12 is recessed to form a limiting groove 122, the limiting block 414 is accommodated in the limiting groove 122, the limiting groove 122 has a first wall and a second wall disposed opposite to each other in the circumferential direction of the inner tube 10; the limiting block 414 abuts against the first wall in the first rotation direction W1, so that the first protrusion 412 abuts against the first blade assembly 20; the limiting block 414 abuts against the second wall in the second rotation direction W2, so that the second protrusion 413 abuts against the second blade assembly 30.

[0067] In this technical solution, by setting a limiting groove 122 and a limiting block 414, the rotation of the outer tube 411 is restricted when the first protrusion 412 abuts against the first blade group 20 and when the second protrusion 413 abuts against the second blade group 30.

[0068] According to some embodiments of this application, please refer to FIG10, when the second blade 31 protrudes from the inner circumference of the inner tube 10, the size of the second blade 31 protruding from the inner circumference of the inner tube 10 gradually decreases along the second rotation direction W2.

[0069] In some embodiments, the outer periphery of the outer tube 411 is provided with anti-slip grooves.

[0070] Specifically, by rotating the outer tube 411 along the second rotation direction W2, the limiting block 414 abuts against the second wall of the limiting groove 122, causing the second blade 31 to protrude from the inner circumference of the inner tube 10. Since the limiting block 414 abuts against the second wall of the limiting groove 122, as the outer tube 411 continues to rotate along the second rotation direction W2, the inner tube 10 will also be driven to continue rotating by the outer tube 411. This cuts off the outer sheath, allowing the operator to complete the cutting off of the outer sheath simply by rotating along the second rotation direction W2. This simplifies the operation and reduces accidental activation.

[0071] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0072] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A device for peeling off an outer sheath, characterized in that, include: An inner tube; a first blade group and a second blade group, arranged sequentially along the axial direction of the inner tube, the first blade group having a first cutting edge and the second blade group having a second cutting edge, the inner circumferential side of the inner tube having a first through hole for the first cutting edge to pass through and a second through hole for the second cutting edge to pass through, the first through hole and the second through hole being arranged sequentially along the axial direction of the inner tube; a driving mechanism, disposed on the outer circumference of the inner tube, the driving mechanism being used to drive one of the first cutting edge and the second cutting edge to protrude from the inner circumferential side of the inner tube; wherein, the first cutting edge is parallel to the axial direction of the inner tube, and the second cutting edge is perpendicular to the axial direction of the inner tube.

2. The device for peeling off an outer sheath according to claim 1, characterized in that, The driving mechanism includes: a driving member for driving the first cutting edge to pass through the first through hole and protrude from the inner circumference of the inner tube; a first rack connected to the first blade assembly and extending radially along the inner tube; a second rack connected to the second blade assembly and extending radially along the inner tube; and a gear rotatably disposed on the outer circumference of the inner tube, along the axial direction of the inner tube, the gear being located between the first rack and the second rack and meshing with both the first rack and the second rack.

3. The device for peeling off an outer sheath according to claim 2, characterized in that, The drive mechanism further includes a torsion spring, the gear being elastically connected to the inner tube via the torsion spring, the torsion spring providing elastic force to rotate the gear to a zero position, the gear being configured such that, at the zero position, the first rack drives the first cutting edge to be located within the first through hole, and the second rack drives the second cutting edge to be located within the second through hole.

4. The device for peeling off an outer sheath according to claim 2, characterized in that, The driving component includes: an outer tube, rotatably disposed on the outside of the inner tube; a first protrusion, protruding from the inner circumference of the outer tube, wherein the outer tube rotates about the axis of the inner tube in a first rotation direction to abut against the first blade assembly and drive the first blade to protrude from the inner wall of the inner tube; and a second protrusion, protruding from the inner circumference of the outer tube, wherein the outer tube rotates about the axis of the inner tube in a second rotation direction to abut against the second blade assembly and drive the second blade to protrude from the inner wall of the inner tube, wherein the first rotation direction is opposite to the second rotation direction.

5. The device for peeling off an outer sheath according to claim 4, characterized in that, On a plane perpendicular to the axis of the inner tube, the orthographic projections of the first protrusion and the second protrusion are spaced apart circumferentially along the inner tube.

6. The device for peeling off an outer sheath according to claim 4, characterized in that, The first protrusion has a first guide surface on the side facing the first blade assembly along the first rotation direction. The first protrusion rotates along the first rotation direction so that the first guide surface guides the first blade to protrude from the inner circumference of the inner tube. The second protrusion has a second guide surface on the side facing the second blade assembly along the second rotation direction. The second protrusion rotates along the second rotation direction so that the second guide surface guides the second blade to protrude from the inner circumference of the inner tube.

7. The device for peeling off an outer sheath according to claim 4, characterized in that, The inner tube includes: a body; a third protrusion protruding from the outer periphery of the body, and the inner periphery of the outer tube abutting against the third protrusion.

8. The device for peeling off an outer sheath according to claim 7, characterized in that, The outer peripheral side of the third protrusion is recessed to form a mounting groove, and the opposite ends of the gear are rotatably disposed on the two groove walls of the mounting groove in the circumferential direction of the inner tube.

9. A device for peeling off an outer sheath according to claim 8, characterized in that, The driving component further includes: a limiting block, wherein the outer peripheral side of the third protrusion is recessed to form a limiting groove, the limiting block is accommodated in the limiting groove, and the limiting groove has a first wall and a second wall disposed opposite to each other in the circumferential direction of the inner tube; the limiting block abuts against the first wall along the first rotation direction so that the first protrusion abuts against the first blade assembly; the limiting block abuts against the second wall along the second rotation direction so that the second protrusion abuts against the second blade assembly.

10. A device for peeling off an outer sheath according to claim 9, characterized in that, As the second cutting edge protrudes beyond the inner circumference of the inner tube, the size of the second cutting edge protruding beyond the inner circumference of the inner tube gradually decreases along the second rotation direction.

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