Cable sheath cutting device

Abstract

The invention discloses a cable sheath cutting device which sequentially comprises a preprocessing unit, a cutting unit and a drafting unit according to the processing sequence, the preprocessing unit drives a plurality of preprocessing blades to move up and down through a wave-shaped control unit, the cutting unit is provided with cutting blades with the same number, and the drafting unit is used for drafting a cable. The undulating motion of the pretreatment blade can preliminarily treat the sheath, the cutting blade completes cutting, the drafting unit provides traction force, the wavy control unit enables the pretreatment blade to undulate along a plane coinciding with the axis of the cable, wavy pretreatment traces are formed on the sheath of the cable, the sheath structure is locally weakened, and a cutting path is preset. When the subsequent cutting blade performs cutting along the same axis, the pretreatment trace reduces the cutting resistance, so that the cutting is smoother and more accurate, and the sheath is easier to separate due to the synergistic effect of pretreatment and cutting after cutting, thereby improving the cutting efficiency and quality, and avoiding the internal damage of the cable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable cutting, and in particular to a cable sheath cutting device. BACKGROUND

[0002] Cable sheath cutting is usually performed during recycling or installation to strip the insulation or protective layer, thereby exposing the internal metal conductor, facilitating subsequent recycling or electrical connection. This step is a key prerequisite for realizing resource recycling or ensuring the reliability of electrical connection.

[0003] In the prior art, fixed ring blades or rotating cutting heads are often used. Fixed blades directly cut the sheath in a ring or longitudinal direction through mechanical driving; rotating cutting heads grind or cut into the sheath through high-speed rotation of the blades. Both of these two methods aim to reduce labor and improve processing speed.

[0004] However, the fixed cutting method relies on rigid contact between the blade and the cable, has large cutting resistance, and is prone to cause uneven cuts or damage to the internal core; and has poor adaptability to different specifications of cables, often requiring frequent adjustment or replacement of tools. Although the rotating cutting is relatively gentle, it usually lacks effective sheath pretreatment and tension control during the cutting process, which may result in incomplete sheath stripping or uneven cutting depth, affecting the subsequent processing efficiency and quality.

[0005] Therefore, it is necessary to improve the cable sheath cutting device in the prior art to solve the above problems. SUMMARY

[0006] The present application overcomes the shortcomings of the prior art and provides a cable sheath cutting device, which aims to solve the defects of low cutting efficiency and quality in the prior art.

[0007] To achieve the above purpose, the technical solution adopted by the present application is as follows: a cable sheath cutting device, which comprises, in order according to the processing sequence of the cable, a pretreatment unit, a cutting unit and a drafting unit, the pretreatment unit, the cutting unit and the drafting unit are fixedly arranged on a rack:

[0008] The pretreatment unit comprises a wave-shaped control unit and a plurality of pretreatment blades connected to the wave-shaped control unit, the wave-shaped control unit is used to control the undulating motion of the plurality of pretreatment blades, the undulating motion planes of the plurality of pretreatment blades intersect with a straight line, and coincide with the cable axis;

[0009] The cutting unit comprises a plurality of cutting blades, the number of the plurality of cutting blades is consistent with the number of the plurality of pretreatment blades;

[0010] The drafting unit is used to draft the cable.

[0011] In a preferred embodiment of the present application, the preprocessing unit and the cutting unit are located at the same horizontal plane and are coaxially arranged based on the cable axis.

[0012] In a preferred embodiment of the present application, the preprocessing blades and the cutting blades are respectively uniformly distributed in a circle, and the positions of the preprocessing blades and the cutting blades are one-to-one corresponding.

[0013] In a preferred embodiment of the present application, the wave-shaped control unit comprises a cam mechanism, a driven ring connected with the cam mechanism, a plurality of driven rods respectively hingedly connected with the driven ring, and a blade supporting rod hingedly connected with the driven rods; the preprocessing blade is fixedly connected with the blade supporting rod, and the driven ring, the driven rods and the blade supporting rod are respectively provided with a limiting mechanism.

[0014] In a preferred embodiment of the present application, the cam mechanism comprises a preprocessing motor, a cam fixedly connected with the preprocessing motor, and a cam rod hingedly connected with the cam; the cam rod is hingedly connected with the driven ring, the cam rod is connected with the cam at a cam eccentric point, and the preprocessing motor drives the cam to rotate.

[0015] In a preferred embodiment of the present application, the movement of the cam rod is located in a vertical plane, and the cable axis is parallel to the vertical plane.

[0016] In a preferred embodiment of the present application, the cutting blade comprises a leading part and a subsequent part in sequence according to the processing order of the cable, and the blade angle of the leading part is smaller than that of the subsequent part.

[0017] In a preferred embodiment of the present application, the blade angles of the leading part and the subsequent part are respectively 15°-30° and 35°-50°.

[0018] In a preferred embodiment of the present application, the length proportions of the leading part and the subsequent part are respectively 20-35% and 65-80%.

[0019] In a preferred embodiment of the present application, the stretching unit comprises a collecting wheel and a driving motor; the collecting wheel is used for compacting the cable and generating a stretching force, and the driving motor is used for providing power for the collecting wheel.

[0020] The present application solves the defects in the background art and has the following beneficial effects:

[0021] (1) The present application provides a cable sheath cutting device, which comprises a pretreatment unit, a cutting unit and a drawing unit in sequence according to the processing sequence, wherein the pretreatment unit drives a plurality of pretreatment blades to move up and down through a wave-shaped control unit, the cutting unit is provided with a consistent number of cutting blades, and the drawing unit is used for drawing the cable. The wave-shaped control unit makes the pretreatment blades move up and down along a plane coinciding with the axis of the cable, forms a wave-shaped pretreatment mark on the cable sheath, locally weakens the sheath structure and presets a cutting path. When the subsequent cutting blades cut along the same axis, the pretreatment mark reduces the cutting resistance, makes the cutting more smooth and accurate, and the sheath is more easily separated after cutting due to the synergistic effect of pretreatment and cutting, thereby improving the cutting efficiency and quality, and avoiding damage to the cable inside.

[0022] (2) In the present application, the pretreatment blades and the cutting blades are uniformly distributed and one-to-one corresponding in the circumference, and the pretreatment unit and the cutting unit are coaxially arranged based on the cable axis, which ensures the symmetry and accuracy of the processing position. The coaxial and corresponding layout ensures that the wave-shaped pre-cut mark generated by each pretreatment blade can guide the leading part of the cutting blade into the deepest part of the pre-cut mark without deviation, and the subsequent part can completely cut along the same path, thereby avoiding the problems of uneven cutting depth, missed cutting or sudden change of cutting force caused by position deviation, and fundamentally ensuring the uniform consistency of the cutting depth and quality on the entire circumference.

[0023] (3) In the present application, the wave-shaped control unit adopts a linkage mechanism composed of a cam driven by a motor, a cam rod, a driven ring, a driven rod and a blade support rod, and is provided with a limiting mechanism for each link, which can convert rotary motion into the up-and-down motion of the blades. The cam mechanism provides a determined and accurately designed motion curve, and the limiting mechanism eliminates the redundant degrees of freedom in the motion chain, so that the amplitude, frequency and phase of the up-and-down motion of all pretreatment blades are strictly synchronized and limited mechanically, overcoming the out-of-sync problem that may be caused by multiple independent drives, and ensuring that the wave-shaped pre-cut mark is uniformly distributed and has consistent depth in the circumference, creating a stable and reliable prerequisite for subsequent cutting.

[0024] (4) In the present application, the cutting blade edge is designed as a leading part and a subsequent part, and the leading part has a significantly smaller angle than the subsequent part. The sharp leading part is easy to cut in, and the strong and tough subsequent part is easy to expand the cutting. During the cutting process, the sharp leading part with a small angle contacts and penetrates the cable sheath first, concentrates stress through its wedge effect, and smoothly leads into the pretreatment mark with small resistance; after the leading part completes the initial incision, the subsequent part with a larger angle cuts in, and the larger edge angle not only ensures the strength but also produces more significant horizontal expansion force, realizing smooth transition from low-resistance lead-in to high-efficiency cutting, protecting the edge and improving the cutting efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0025] The present application will be further described below in connection with the accompanying drawings and examples.

[0026] Figure 1 is a perspective view of a preferred embodiment of the present application;

[0027] Figure 2 is a schematic view of a pre-treatment unit of a preferred embodiment of the present application;

[0028] Figure 3 is a schematic view of a cutting blade of a preferred embodiment of the present application;

[0029] Figure 4 is a schematic view of a wave control unit of a preferred embodiment of the present application;

[0030] In the drawings: 100, frame; 200, pre-treatment unit; 210, wave control unit; 211, cam mechanism; 212, driven ring; 213, driven rod; 214, blade support rod; 215, pre-treatment blade; 216, pre-treatment motor; 217, cam; 218, cam rod; 300, cutting unit; 310, cutting blade; 400, drawing unit. DETAILED DESCRIPTION

[0031] The present application will now be further described in detail with reference to the accompanying drawings and examples, which are simplified schematic views and only show the basic structure of the present application in a schematic manner, and thus only show the components related to the present application.

[0032] As shown in Figure 1 , a cable sheath cutting device comprises, in the order of processing of the cable, a pre-treatment unit 200, a cutting unit 300 and a drawing unit 400, which are respectively fixedly arranged on a frame 100:

[0033] As shown in Figure 2 and Figure 3 , the pre-treatment unit 200 comprises a wave control unit 210 and a plurality of pre-treatment blades 215 connected to the wave control unit 210, the wave control unit 210 is used to control the up-and-down movement of the plurality of pre-treatment blades 215, the up-and-down movement planes of the plurality of pre-treatment blades 215 intersect with a straight line and coincide with the cable axis;

[0034] The cutting unit 300 comprises a plurality of cutting blades 310, the number of the plurality of cutting blades 310 is consistent with the number of the plurality of pre-treatment blades 215;

[0035] The drawing unit 400 is used to draw the cable.

[0036] The device is sequentially fixed on the three functional units on the rack 100 along the cable processing direction: the pretreatment unit 200, the cutting unit 300 and the drawing unit 400. The cable passes through the center of the three units along its own axis. The pretreatment unit 200 is coaxial with the cutting unit 300 and located in the same horizontal plane, ensuring the unity of the processing reference. In operation, the cable first passes through the pretreatment unit 200 for outer skin preprocessing, then enters the cutting unit 300 for deep cutting, and finally is provided with a continuous and stable traction force by the drawing unit 400, forming a continuous and automated cutting process.

[0037] The pretreatment unit 200 and the cutting unit 300 are located in the same horizontal plane and are coaxially arranged based on the cable axis. A plurality of pretreatment blades 215 and a plurality of cutting blades 310 are circumferentially and uniformly distributed, and the positions of the plurality of pretreatment blades 215 and the plurality of cutting blades 310 are one-to-one corresponding.

[0038] As shown in Figure 4 The wave-shaped control unit 210 includes a cam 217 mechanism 211, a driven ring 212 connected with the cam 217 mechanism 211, a plurality of driven rods 213 hingedly connected with the driven ring 212 respectively, and a blade support rod 214 hingedly connected with the driven rod 213; the pretreatment blade 215 is fixedly connected with the blade support rod 214, and the driven ring 212, the driven rod 213 and the blade support rod 214 are respectively provided with a limiting mechanism.

[0039] The cam 217 mechanism 211 includes a pretreatment motor 216, a cam 217 fixedly connected with the pretreatment motor 216, a cam 217 rod hingedly connected with the cam 217, and the cam 217 rod is hingedly connected with the driven ring 212. The connection between the cam 217 rod and the cam 217 is the eccentric point of the cam 217, and the pretreatment motor 216 drives the rotation of the cam 217. The movement of the cam 217 rod is in a vertical plane, and the cable axis is parallel to the vertical plane.

[0040] The pretreatment motor 216 drives the rotation of the cam 217. Since one end of the cam 217 rod is hingedly connected with the eccentric point of the cam 217, and the other end is hingedly connected with the driven ring 212, the rotational movement of the cam 217 is converted into the reciprocating movement of the cam 217 rod in the vertical plane, which in turn drives the driven ring 212 to move up and down along a direction parallel to the cable axis.

[0041] The driven ring 212 transmits the up-and-down movement to the corresponding blade support rods 214 through a plurality of circumferentially evenly distributed driven rods 213. This series of hinged connections constitutes a spatial motion conversion mechanism. Each pre-processing blade 215 is fixed on a blade support rod 214. When the driven ring 212 makes up-and-down movement, all the blade support rods 214 and the pre-processing blades 215 fixed thereon are driven to make synchronous and regular up-and-down movement in the respective movement planes through the transmission of the driven rods 213. The mechanical design ensures that the up-and-down movement planes of all the blade support rods 214 intersect at the same straight line, and the straight line coincides with the axis of the cable.

[0042] The cutting blade 310 sequentially includes a leading part and a subsequent part according to the processing order of the cable, and the blade angle of the leading part is smaller than that of the subsequent part.

[0043] The blade angles of the leading part and the subsequent part are 15°-30° and 35°-50°, respectively. The length proportions of the leading part and the subsequent part are 20-35% and 65-80%, respectively.

[0044] The leading part has a smaller blade angle and accounts for 20-35% of the total length of the blade, and the function is to use the sharp blade to easily lead in along the wave-shaped mark generated by pre-processing, realize initial cutting, and have small resistance. The subsequent part has a larger blade angle and accounts for 65-80% of the total length of the blade. After the leading part is cut in, the larger blade angle provides stronger wedge and expansion force, which is used to efficiently and completely complete the girth cutting or longitudinal cutting of the outer skin and reduce the extrusion damage to the internal core.

[0045] The drafting unit 400 includes a collection wheel and a driving motor. The collection wheel is used to compress the cable and generate a drafting force, and the driving motor is used to provide power for the collection wheel. The drafting unit 400 is located at the end of the process and mainly consists of a driving motor and a collection wheel. The driving motor provides power for the collection wheel, and the collection wheel compresses the cable to generate a continuous drafting force directed to the outlet direction of the device. In the cutting process, the cable is tensioned to keep it in a straight and stable state, avoid affecting the cutting precision due to shaking, and actively pull the cable out of the device to ensure continuous process.

[0046] The above is based on the ideal embodiment of the present application, and through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the contents in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A cable sheath cutting device, comprising, in sequence according to the cable processing order: A pretreatment unit (200), a cutting unit (300), and a drawing unit (400), wherein the pretreatment unit (200), the cutting unit (300), and the drawing unit (400) are respectively fixedly mounted on a frame (100), characterized in that: The preprocessing unit (200) includes a wave-shaped control unit (210) and a plurality of preprocessing blades (215) respectively connected to the wave-shaped control unit (210). The wave-shaped control unit (210) is used to control the undulating motion of the plurality of preprocessing blades (215). The undulating motion planes of the plurality of preprocessing blades (215) intersect a straight line and coincide with the cable axis. The cutting unit (300) includes a plurality of cutting blades (310), the number of which is the same as the number of the plurality of pre-processing blades (215); The stretching unit (400) is used to stretch the cable.

2. The cable sheath cutting device according to claim 1, characterized in that: The preprocessing unit (200) and the cutting unit (300) are located on the same horizontal plane and are coaxially arranged based on the cable axis.

3. The cable sheath cutting device according to claim 1, characterized in that: The pretreatment blades (215) and the cutting blades (310) are evenly distributed around the circumference, and the positions of the pretreatment blades (215) and the cutting blades (310) correspond one-to-one.

4. The cable sheath cutting device according to claim 1, characterized in that: The wave-shaped control unit (210) includes a cam (217) mechanism (211), a driven ring (212) connected to the cam (217) mechanism (211), a plurality of driven rods (213) respectively hinged to the driven ring (212), and a blade support rod (214) hinged to the driven rods (213); the pre-processing blade (215) is fixedly connected to the blade support rod (214), and the driven ring (212), the driven rods (213) and the blade support rod (214) are respectively provided with limit mechanisms.

5. The cable sheath cutting device according to claim 4, characterized in that: The cam (217) mechanism (211) includes a pre-processing motor (216), a cam (217) fixedly connected to the pre-processing motor (216), a cam (217) rod hinged to the cam (217), the cam (217) rod hinged to the driven ring (212), the connection point between the cam (217) rod and the cam (217) is the eccentric point of the cam (217), and the pre-processing motor (216) drives the cam (217) to rotate.

6. The cable sheath cutting device according to claim 5, characterized in that: The movement of the cam (217) rod is located in a vertical plane, and the cable axis is parallel to the vertical plane.

7. The cable sheath cutting device according to claim 1, characterized in that: The cutting blade (310) includes a leading part and a trailing part in sequence according to the processing order of the cable, and the cutting edge angle of the leading part is smaller than that of the trailing part.

8. The cable sheath cutting device according to claim 7, characterized in that: The cutting edge angles of the leading part and the following part are 15°-30° and 35°-50°, respectively.

9. A cable sheath cutting device according to claim 7, characterized in that: The length ratios of the leading portion and the trailing portion are 20-35% and 65-80%, respectively.

10. A cable sheath cutting device according to claim 1, characterized in that: The stretching unit (400) includes a collecting wheel and a drive motor. The collecting wheel is used to press the cable and generate stretching force, and the drive motor is used to provide power to the collecting wheel.

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