A cable stripping method

Abstract

The invention relates to the technical field of communication technology, and in particular to a cable stripping method, which is used for stripping an outer insulating layer and an aluminum foil shielding layer of a cable, and comprises the following steps: step 1: fixing the cable so that the blade of a cutting tool abuts against the cable; step 2: extruding and cutting the cable until the outer insulating layer and the aluminum foil shielding layer are cut off, resetting, and separating the cutting tool from the cable; step 3: adjusting the relative position of the cable and the cutting tool, and repeating step 2 to extrude and cut other surfaces of the cable; step 4: repeating step 3 n times until the cross-sections of the outer insulating layer and the aluminum foil shielding layer of the cable are completely cut; step 5: pushing the cut outer insulating layer and the aluminum foil shielding layer off the cable together, and cutting the outer insulating layer and the aluminum foil shielding layer of the cable by extrusion, which can avoid damaging the internal metal shielding mesh and the inner core, and at the same time can avoid the problem of insufficient cutting and the outer insulating layer and the aluminum foil shielding layer being difficult to strip off.

Description

Technical Field

[0001] The invention relates to the technical field of communications, and in particular to a cable stripping method. Background Art

[0002] Existing new energy cables generally include an outer insulation layer, a shielding layer and an inner core. The shielding layer includes a metal shielding mesh and an aluminum foil arranged on the outside of the shielding mesh. Generally, the cable conductor is made of multiple conductors twisted together, and it is easy to form an air gap between it and the insulation layer. The surface of the conductor is not smooth, which will cause electric field concentration. A shielding layer of semi-conductive material is added to the surface of the conductor. It has the same potential as the shielded conductor and is in good contact with the insulation layer, thereby avoiding local discharge between the conductor and the insulation layer, and has strong anti-interference ability. When the cable is connected to the connector, it is necessary to pre-strip the outer insulation layer and aluminum foil on the surface, and then turn over the inner metal shielding layer to expose the middle core.

[0003] Normally, laser or rotary cutting is generally used for wire stripping. Authorization announcement number CN101997261B discloses a laser wire stripping method, which is mainly used for stripping the outer sheath, inner sheath and shielding layer of the wire. In this method, four laser beams G1 upper, G2 upper, G1 lower and G2 lower pass through four focusing lenses arranged at 90° intervals on the same circle, and the optical axes of the four focusing lenses converge on the stripping sample. When the wire is stripped, first, G1 upper and G2 upper are focused and pass through the upper surface of the wire at an angle of 45° to the wire to complete the stripping of the upper surface. Then, G1 lower and G2 lower are converted from upper to lower optical paths by a pneumatic device, and then the lower surface of the wire is stripped after focusing. When this method is used for wire stripping, the existing metal shielding layer of the cable is copper. The wire is woven from silk, and the laser may pass through the mesh of the metal shielding layer and cause damage to the inner core; the authorization announcement number CN105449593B discloses a lightweight cable manual stripping tool and a wire stripping method, the specific method is: (1) adjusting the screwing length of the blocking screw on the block bracket according to the stripping size of the cable to be stripped; (2) adjusting the screwing length of the height adjustment screw according to the cable stripping depth; (3) inserting the cable along the wire circular groove on the tool body until its end face hits the end face of the blocking screw; (4) pressing the rotating arm until the free end of the rotating arm presses on the height adjustment screw, allowing the blade on the rotating arm to cut into the cable; (5) keeping the rotating arm pressed tightly, rotating the cable for a few weeks to ensure that the blade cuts off the outer conductor or medium of the cable; (6) pulling out the cable; (7) lifting the rotating arm, Pour out the cut part of the cable. During the actual operation, since the cross-section of the cable may not be a regular circle, in the process of rotating the cable for rotary cutting, some cross-sections may be cut too deeply and some cross-sections may be cut too shallowly, resulting in incomplete cutting, which is not convenient for stripping the outer insulation and aluminum foil, and may also damage the metal shielding mesh and the inner core. Summary of the invention

[0004] The object of the present invention is to provide a cable stripping method to solve the problem in the above background technology that it is inconvenient to strip off the outer insulation and the aluminum foil, which may damage the inner core of the metal shielding mesh.

[0005] To achieve the above object, the present invention provides the following technical solution: a cable stripping method for stripping an outer insulation layer and an aluminum foil shielding layer of a cable, comprising the following steps:

[0006] Step 1: Fix the cable so that the blade of the cutting tool contacts the cable;

[0007] Step 2: Extrude and cut the cable until the outer insulation layer and the aluminum foil shielding layer are cut off, reset, and separate the cutting tool from the cable;

[0008] Step 3: Adjust the relative position of the cable and the cutting tool, and repeat step 2 to extrude and cut the other sides of the cable;

[0009] Step 4: Repeat step 3 until the cross-section of the cable's outer insulation layer and aluminum foil shielding layer is completely cut;

[0010] STEP 5: Push the cut outer insulation and foil shield off the cable.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the cable stripping method uses a cutting tool to extrude the cable. The insulating layer is generally made of flexible rubber material, and the aluminum foil is relatively thin. The cutting tool can easily cut the two, which is convenient for later stripping. The metal shielding mesh inside the aluminum foil is generally woven from copper wire. Since the cable has a certain flexibility, the cutting tool will only deform the metal shielding mesh when it is squeezed by the cutting tool, but will not cut it, thereby not damaging the metal shielding mesh. At the same time, before extrusion and cutting, the cutting tool is used to pre-rotate the cable, so the stripping speed is fast, the loss can be reduced, and the yield rate is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the cable structure of the present invention;

[0013] Figure 2 It is a structural schematic diagram of the wire stripping device in the present invention;

[0014] Figure 3 It is a schematic diagram of the cutting working state structure in the present invention.

[0015] In the figure: 1. cable; 101. outer insulation layer; 102. aluminum foil shielding layer; 103. metal shielding mesh; 104. inner insulation; 2. clamp 2; 3. cutting tool. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Example 1

[0018] See also Figure 1-3 An embodiment of the present invention provides a cable stripping method for stripping an outer insulating layer 101 and an aluminum foil shielding layer 102 of a cable 1, characterized in that it comprises the following steps:

[0019] Step 1: Fix the cable 1 so that the blade of the cutting tool 3 abuts against the cable 1.

[0020] The cable 1 includes an outer insulating layer 101, an aluminum foil shielding layer 102, a metal shielding mesh 103 and an inner insulation layer 104 from the outside to the inside. Figure 2 A clamp 2 is provided to clamp and fix the cable 1. The clamp 2 includes a left clamp, a right clamp and a driving member for adjusting the distance between the two. The driving member can be a cylinder, an electric telescopic rod, etc. There are at least two cutting tools 3. In this embodiment, three cutting tools 3 are provided. The cutting tools 3 are arranged in a circular array with the cable 1 as the center on a mounting plate with a through hole in the center. The cutting tools 3 are movably connected to the mounting plate through the driving member, so that the cutting tools 3 can move synchronously along the radial direction of the cable 1. The driving member can be any one of a cylinder, an electric telescopic rod, etc. The cutting tools 3 can all rotate synchronously with the cable 1 as the center. Specifically, a driven gear is provided on the outer periphery of the mounting plate, and a driving gear and a driving motor for driving the driving gear to rotate are provided on one side of the driven gear to drive the mounting plate to rotate, so that the cutting tools 3 can all rotate synchronously with the cable 1 as the center. When working, one end of the cable 1 is inserted into the middle of each cutting tool 3, the blade of the cutting tool 3 is in contact with the cable 1, and the other end is placed in the middle of the left clamp and the right clamp, and then the driving part is controlled to contract to clamp and fix the cable 1.

[0021] Step 2: Drive the cutting tool 3 to move synchronously along the radial direction of the cable 1 to squeeze and cut the cable 1 until the outer insulation layer 101 and the aluminum foil shielding layer 102 are cut off, and reset to separate the cutting tool 3 from the cable 1.

[0022] The cutting tool 3 clamps the cable 1 in the middle and squeezes it. The outer insulating layer 101 is generally made of flexible rubber material, and the aluminum foil is relatively thin. The cutting tool 3 can easily cut the two, which is convenient for later peeling. The metal shielding mesh 103 inside the aluminum foil shielding layer 102 is generally woven from copper wire. Since the inner insulation 104 has a certain elasticity, the appropriate squeezing force of the cutting tool 3 will only cause the metal shielding mesh 104 to deform, but will not cut it off, and at the same time, insufficient cutting can be avoided. When resetting, keep the cable 1 still and drive the cutting tool 3 to move to the side away from the cable 1. Before the next squeezing, separate the cutting tool 3 from the cable 1 to prevent the rotation of the cutting tool 3 from causing wear to the metal shielding mesh 103.

[0023] Step 3: Adjust the relative position of the cable 1 and the cutting tool 3, and repeat step 2 to perform extrusion cutting on other surfaces of the cable 1.

[0024] In this embodiment, the adjustment method is to drive the cutting tool 3 to rotate m degrees, and the range of m is 0 to 360 degrees. The cable 1 remains stationary, and the second step is repeated to perform extrusion cutting on other surfaces of the cable 1.

[0025] Step 4: Repeat step 3 n times until the cross-section of the outer insulation layer 101 and the aluminum foil shielding layer 102 of the cable 1 is completely cut.

[0026] n is a natural number. When the cable 1 is thicker, n is larger, that is, the rotation degree m of the cutting tool 3 needs to be smaller, so that all sides of the cable 1 can be squeezed and cut. When the cable 1 is thinner, the cutting tool 3 can cut the entire circumference with fewer rotations. Figure 3 The cutting tool 3 rotates at the same angle m each time, so that the cable 1 can be cut evenly around the circumference. The rotation angle m of the cutting tool 3 and the number of cuts n can be obtained by experiments by the staff. In actual operation, the rotation angle m and the number of cuts n of the cutting tool 3 are controlled by the wire stripping device.

[0027] Step 5: Push the cut outer insulation layer 101 and the aluminum foil shielding layer 102 off the cable 1 together.

[0028] In this step, a driving unit is specifically provided to drive the clamp 2 to move along the end away from the cutting tool 3 to push down the completely cut outer insulation layer 101 and the aluminum foil shielding layer 102 together. The driving unit can be a cylinder, a screw or an electric telescopic rod.

[0029] Example 2

[0030] See also Figure 1-3An embodiment of the present invention provides a cable stripping method for stripping an outer insulating layer 101 and an aluminum foil shielding layer 102 on the surface of a cable 1, characterized in that it comprises the following steps:

[0031] Step 1: Fix the cable 1 so that the blade of the cutting tool 3 abuts against the cable 1.

[0032] The cable 1 includes an outer insulating layer 101, an aluminum foil shielding layer 102, a metal shielding mesh 103 and an inner insulation layer 104 from the outside to the inside. Figure 2 A clamp 2 is provided to clamp and fix the cable 1. The clamp 2 includes a left clamp, a right clamp and a driving member for adjusting the distance between the two. The driving member can be a cylinder, an electric telescopic rod, etc.; the number of cutting tools 3 can be one or more, and the cutting tool 3 is movably set on the mounting plate through the driving member. The mounting plate is penetrated with a through hole for accommodating the cable 1 to pass through, so that the cutting tool 3 can move radially along the cable 1. The driving member can be any one of a cylinder, an electric telescopic rod, etc. When working, one end of the cable 1 is inserted into the side close to the blade of the cutting tool 3, and the other end is placed between the left clamp and the right clamp, and then the driving member is controlled to contract to clamp and fix the cable 1.

[0033] Step 2: Drive the cutting tool 3 to move synchronously along the radial direction of the cable 1 to squeeze and cut the cable 1 until the outer insulation layer 101 and the aluminum foil shielding layer 102 are cut off, and reset to separate the cutting tool 3 from the cable 1.

[0034] When there are multiple cutting tools 3, the cutting tool 3 clamps the cable 1 in the middle. When there is only one cutting tool 3, the cable 1 is clamped between the cutting tool 3 and the workbench for extrusion. The outer insulating layer 101 is generally made of flexible rubber material, and the aluminum foil is thin. The cutting tool 3 can easily cut the two, which is convenient for later peeling. The metal shielding mesh 103 on the inner side of the aluminum foil shielding layer 102 is generally woven from copper wire. Since the inner insulation 104 has a certain elasticity, the appropriate extrusion force of the cutting tool 3 will only cause the metal shielding mesh 104 to deform, but will not cut it off, and at the same time, insufficient cutting can be avoided. When resetting, keep the cable 1 still and drive the cutting tool 3 to move to the side away from the cable 1. Before the next extrusion, separate the cutting tool 3 from the cable 1 to avoid wear on the metal shielding mesh 103.

[0035] Step 3: Adjust the relative position of the cable 1 and the cutting tool 3, and repeat step 2 to perform extrusion cutting on other surfaces of the cable 1.

[0036] In this embodiment, the adjustment method is to drive the cable 1 to rotate m degrees, and the range of m is 0 to 360 degrees, and the cutting tool 3 remains stationary. Specifically, a driving part for driving the clamp 2 to rotate is provided on the clamp 2, and the driving part can be a gear and a motor. Then repeat step 2 to extrude and cut different surfaces of the cable 1.

[0037] Step 4: Repeat step 3 n times until the cross-section of the outer insulation layer 101 and the aluminum foil shielding layer 102 of the cable 1 is completely cut.

[0038] n is a natural number. When the cable 1 is thicker, n is larger, that is, the rotation degree m of the cutting tool 3 needs to be smaller, so that all sides of the cable 1 can be squeezed and cut. When the cable 1 is thinner, the cutting tool 3 can cut the entire circumference with fewer rotations. Figure 3 The cutting tool 3 rotates at the same angle each time, so that the circumference of the cable 1 can be cut uniformly. The rotation angle m and the number of cuts n of the cable 1 can be obtained by experiments by the staff. In actual operation, the rotation angle m and the number of cuts n of the cable 1 are controlled by the wire stripping device.

[0039] Step 5: Push the cut outer insulation layer 101 and the aluminum foil shielding layer 102 off the cable 1 together.

[0040] In this step, a driving unit is specifically provided to drive the clamp 2 to move along the end away from the cutting tool 3 to push down the completely cut outer insulation layer 101 and the aluminum foil shielding layer 102 together. The driving unit can be a cylinder, a screw or an electric telescopic rod.

[0041] Example 3

[0042] See also Figure 1-3 An embodiment of the present invention provides a cable stripping method for stripping an outer insulating layer 101 and an aluminum foil shielding layer 102 on the surface of a cable 1, characterized in that it comprises the following steps:

[0043] Step 1: Fix the cable 1, make the blade of the cutting tool 3 contact the cable 1, pre-cut the outer insulating layer 101 of the cable 1, the pre-cutting depth is less than the thickness of the outer insulating layer 101, and then stop the cutting tool 3.

[0044] The cable 1 includes an outer insulating layer 101, an aluminum foil shielding layer 102, a metal shielding mesh 103 and an inner insulation layer 104 from the outside to the inside. Figure 2, a clamp 2 is provided to clamp and fix the cable 1, the clamp 2 includes a left clamping member, a right clamping member and a driving member for adjusting the distance between the two, the driving member can be a cylinder, an electric telescopic rod, etc.; the number of cutting tools 3 is at least two, and three are provided in this embodiment, the cutting tools 3 can all move synchronously along the radial direction of the cable 1, and the cutting tools 3 can all rotate synchronously with the cable 1 as the center of the circle. When working, one end of the cable 1 is inserted into the middle of each cutting tool 3, the blade of the cutting tool 3 abuts against the cable 1, and the other end is placed between the left clamping member and the right clamping member, and then the driving member is controlled to contract to clamp and fix the cable 1, and then the cutting tool 3 is controlled to move along the radial direction of the cable 1 and rotate at the same time to perform rotary cutting on the outer insulating layer 101, which can improve the processing efficiency, and the cutting depth is less than the thickness of the outer insulating layer 101 to avoid damage to the inner metal shielding mesh 103.

[0045] Step 2: Extrude and cut the cable 1 until the outer insulating layer 101 and the aluminum foil shielding layer 102 are cut off, and reset to separate the cutting tool 3 from the cable 1.

[0046] The cutting tool 3 clamps the cable 1 in the middle and squeezes it. The outer insulating layer 101 is generally made of flexible rubber material, and the aluminum foil is relatively thin. The cutting tool 3 can easily cut the two, which is convenient for later peeling. The metal shielding mesh 103 inside the aluminum foil shielding layer 102 is generally woven from copper wire. Since the inner insulation 104 has a certain elasticity, the appropriate squeezing force of the cutting tool 3 will only cause the metal shielding mesh 104 to deform, but will not cut it off, and at the same time, insufficient cutting can be avoided. When resetting, keep the cable 1 still and drive the cutting tool 3 to move to the side away from the cable 1. Before the next squeezing, separate the cutting tool 3 from the cable 1 to prevent the rotation of the cutting tool 3 from causing wear to the metal shielding mesh 103.

[0047] Step 3: Adjust the relative position of the cable 1 and the cutting tool 3, and repeat step 2 to perform extrusion cutting on other surfaces of the cable 1.

[0048] Drive the cable 1 to rotate m degrees, and m ranges from 0 to 360 degrees, and the cutting tool 3 remains stationary, or make the cutting tool 3 rotate m degrees around the cable 1 as the center, and m ranges from 0 to 360 degrees, and the cable 1 remains stationary, and the other surfaces of the cable 1 are squeezed and cut.

[0049] Step 4: Repeat step 3 n times until the cross-section of the outer insulation layer 101 and the aluminum foil shielding layer 102 of the cable 1 is completely cut.

[0050] n is a natural number. When the cable 1 is thicker, n is larger, that is, the rotation degree m of the cutting tool 3 needs to be smaller, so that all sides of the cable 1 can be squeezed and cut. When the cable 1 is thinner, the cutting tool 3 can cut the entire circumference with fewer rotations. Figure 3 The cutting tool 3 or the cable 1 rotates at the same angle each time, so that the circumference of the cable 1 can be cut uniformly. The rotation angle m and the number of cuts n can be obtained by experiments by the staff. In actual operation, the rotation angle m and the number of cuts n are set by the wire stripping equipment.

[0051] Step 5: Push the cut outer insulation layer 101 and the aluminum foil shielding layer 102 off the cable 1 together.

[0052] In this step, a driving unit is specifically provided to drive the clamp 2 to move along the end away from the cutting tool 3 to push down the completely cut outer insulation layer 101 and the aluminum foil shielding layer 102 together. The driving unit can be a cylinder, a screw or an electric telescopic rod.

[0053] Example 4

[0054] On the basis of Example 3, before step 1, the diameter of the cable 1 is measured first. The measuring device may be a vernier caliper or other measuring tools. After step 4, a storage unit is set on the wire stripping device to record the sizes of m and n. When stripping cables 1 of the same or similar diameter, there is no need to manually set parameters. The corresponding values ​​are automatically matched by the controller of the wire stripping device.

[0055] Compared with the prior art, the cable stripping method of the present invention has the following advantages: by using the cutting tool 3 to extrude the cable 1, the outer insulating layer 101 is generally made of flexible rubber material, and the aluminum foil is relatively thin. The cutting tool 3 can easily cut the two, which is convenient for later stripping. The metal shielding mesh 103 on the inside of the aluminum foil is generally woven from copper wire. The cutting tool 3 extrudes the metal shielding mesh 103, which only causes it to deform but does not cut it off, thereby not damaging the metal shielding mesh 103, reducing losses and improving stripping efficiency.

[0056] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A cable stripping method for stripping an outer insulation layer and an aluminum foil shielding layer of a cable, characterized in that: The following steps are involved: Step 1: Fix the cable so that the blade of the cutting tool contacts the cable; Step 2: Extrude and cut the cable until the outer insulation layer and the aluminum foil shielding layer are cut off, reset, and separate the cutting tool from the cable; extrusion cutting is performed by three cutting tools arranged in a circular array with the cable as the center, and the cutting tools rotate synchronously with the cable as the center; Step 3: Adjust the relative position of the cable and the cutting tool, and repeat step 2 to extrude and cut the other sides of the cable; Step 4: Repeat step 3 n times until the cross-section of the cable's outer insulation layer and aluminum foil shielding layer is completely cut; STEP 5: Push the cut outer insulation and foil shield off the cable.

2. A cable stripping method according to claim 1, characterized in that: The n is a natural number.

3. A cable stripping method according to claim 1, characterized in that: Between step 1 and step 2, the outer insulation layer of the cable is pre-cut, the pre-cutting depth is less than the thickness of the outer insulation layer, and then the cutting tool is stopped.

4. A cable stripping method according to claim 1, characterized in that: In step 3, the relative position of the cable and the cutting tool is adjusted by driving the cable to rotate m degrees or driving the cutting tool to rotate m degrees, and the range of m is 0 to 360 degrees.

5. A cable stripping method according to claim 1, characterized in that: In step 1, a clamp is provided to secure the cable.

6. A cable stripping method according to claim 1, characterized in that: In step 1, the number of the cutting tools is at least two, and the cutting tools are arranged in a circular array with the cable as the center, and the cutting tools can move radially along the cable.

7. A cable stripping method according to claim 6, characterized in that: The cutting tools can all rotate synchronously with the cable as the center.

8. A cable stripping method according to claim 1, characterized in that: In step 5, a driving part is provided, and the driving part drives the clamp to move along an end away from the cutting tool to push down the completely cut outer insulation layer and the aluminum foil shielding layer together.

9. A cable stripping method according to claim 1, characterized in that: Before step 1, measure the diameter of the cable, and after step 4, record the values ​​of m and n.

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