Laser ring cutting device and working method thereof

Abstract

The invention discloses a laser ring cutting device and a working method thereof.The laser ring cutting device comprises a static light path part, a rotating light path part and a cable clamp used for positioning a cable, and the static light path part comprises a laser, a distance measuring sensor, a beam combiner and a rotating mechanism; the beam combiner is used for combining laser light of the laser and distance measuring light of the distance measuring sensor and guiding the combined light to the rotating light path part, the rotating light path part is provided with an incident port and an emergent port, and the rotating mechanism is connected with the incident port of the rotating light path part and used for rotating the rotating light path part by 360 degrees. The rotary light path part comprises a reflecting mirror group and a zooming assembly, and the reflecting mirror group is used for reflecting light of the incident port to the emergent port to cut the cable; the device has the advantages of being simple in structure, good in cutting quality and high in efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of laser cutting processing, and in particular relates to a laser ring cutting device and a working method thereof. Background Art

[0002] Single-core cables usually consist of a conductor core and an insulating sheath surrounding the conductor over the entire length of the cable. Multi-core cables usually consist of multiple conductor cores and a single insulating sheath, with the group of cores surrounded by a metal braid and then surrounded by a common insulating sheath. In order to connect the cable to a specific electrical device, the cable end needs to be stripped, that is, a portion of the insulating sheath is stripped from the cable end to expose the conductor. The stripping of the end of a multi-core cable also includes removing the common insulating sheath from the end over a given length without damaging the metal braid and the individual insulating sheaths of each core.

[0003] Common cable cutting methods include mechanical methods and laser stripping.

[0004] Mechanical methods usually use a rotating blade to cut and strip. The cutting equipment used includes two blades in a ring or V shape, which face each other and are hinged together to cut the insulating sheath around the conductor on the cable. Single-core cables usually include a conductor core and an insulating sheath around the conductor over the entire length of the cable. Cables of different specifications require different blades, otherwise the cable will be damaged, resulting in insufficient mechanical strength of the cable or increased heat generation.

[0005] Laser wire stripping uses laser vaporization to strip the surface. Since there is no contact, choosing a suitable laser can only cut the insulation sleeve without damaging the conductor core.

[0006] The problem with the existing technology is that when using laser to cut off the insulating sleeve or aluminum film layer of a cable with multiple insulation layers, it is easy to damage the plastic insulation layer inside the multi-core wire, affecting the quality of the internal cable; using conventional galvanometer laser cutting method, it is necessary to flip the cable or rotate the cable, but the cable is produced in an entire roll and cannot be rotated or flipped as a whole. Summary of the invention

[0007] The purpose of the present invention is to provide a laser ring cutting device and a working method thereof in view of the problems existing in the prior art. The solution has the advantages of simple device structure, good cutting quality and high efficiency.

[0008] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a laser ring cutting device, including a static optical path part, a rotating optical path part and a cable clamp for positioning cables, the static optical path part includes a laser, a ranging sensor, a beam combiner and a rotation mechanism, the beam combiner is used to combine the laser light of the laser and the ranging light of the ranging sensor and guide them to the rotating optical path part, the rotating optical path part is provided with an incident port and an exit port, the rotation mechanism is connected to the incident port of the rotating optical path part to rotate the rotating optical path part 360°, the rotating optical path part includes a reflector group and a zoom assembly, the reflector group is used to reflect the incident port light to the exit port to cut the cable.

[0009] In the above scheme, the laser of the static optical path is used to generate laser, and the ranging light of the ranging sensor is combined with the laser through a beam combiner. The combined light enters the rotating optical path from the incident port, and is emitted from the exit port after multiple reflections by the reflector group. Under the action of the zoom component, the laser forms a focus at the exit port to cut the cable. The rotating mechanism can drive the rotating optical path to rotate, thereby realizing 360° circular cutting of the cable. The cable clamp positions the cable at the rotation axis of the rotating optical path, thereby ensuring uniform cutting of the outer ring of the cable.

[0010] Furthermore, it comprises a metal sensor for detecting the axial position of the metal layer of the cable, the static optical path is connected with an axial movement module, and the metal sensor and the axial movement module are both electrically connected to the controller.

[0011] A metal sensor is provided to detect the axial position of the metal layer of the cable, and an axial moving module is used to make the laser position of the outlet correspond to the cut metal layer, so that positioning is convenient.

[0012] Furthermore, the rotating optical path portion includes an axial channel 1, a reflector 1, a vertical channel 1, a reflector 2, an axial channel 2, a reflector 3 and a vertical channel 2 which are connected in sequence.

[0013] After the light enters the rotating optical path, it is reflected by the reflector 1, reflector 2, and reflector 3 in sequence, and then emitted from the exit to cut the cable. When the rotating optical path rotates, the direction of the laser is adjusted accordingly to perform a circular cutting on the outer ring of the cable.

[0014] Furthermore, an angle adjustment mechanism is provided at two locations of the axial channel, and the angle adjustment mechanism is used to adjust the direction of the outlet.

[0015] By setting up an angle adjustment mechanism, the direction of the laser outlet can be adjusted according to the change of the cable size, so that the laser direction remains tangent to the circumferential direction of the cable.

[0016] Furthermore, the angle adjustment mechanism comprises a connecting tube and a mounting tube which are rotatably connected, the outer ring of the connecting tube is provided with a gear ring, and the mounting tube is provided with a gear motor for cooperating with the gear ring.

[0017] The gear motor rotates to drive the gear ring to rotate, thereby adjusting the relative angle between the connecting pipe and the installation pipe.

[0018] Furthermore, the zoom assembly includes a focusing lens, an adjustment motor and a slide rail, the focusing lens is slidably connected to the slide rail, the adjustment motor is connected to a lead screw, and the lead screw is threadedly connected to the focusing lens.

[0019] The focusing lens is slidably connected through a slide rail, and then the adjusting motor drives the lead screw to rotate, and the focusing lens is adjusted to move axially to achieve focusing.

[0020] Furthermore, the metal sensor is connected to a fixing bracket, and the metal sensor is positioned by the fixing bracket.

[0021] The metal sensor is positioned by setting a fixed bracket, which is convenient for axial positioning of the cutting position.

[0022] Furthermore, the static optical path portion includes an optical path tube connected to the laser outlet end, the beam combiner and the distance sensor are mounted on the optical path tube, an optical path hole is opened in the middle of the rotating mechanism, and the incident port is connected to the optical path hole.

[0023] The optical path tube is used to isolate external light, and the laser, beam combiner, and ranging sensor are connected and positioned. The light combined by the beam combiner passes through the optical path hole in the middle of the rotating mechanism and enters the rotating optical path part from the incident port.

[0024] Furthermore, it comprises a clamp moving module, and the clamp moving module is connected to the cable clamp.

[0025] The clamp moving module is used to drive the cable clamp and the cable to move, which is convenient for cable positioning.

[0026] A working method of the above-mentioned laser ring cutting device comprises the following steps: S1. Position the cable using a cable clamp and adjust the exit port of the rotating optical path to the cable processing position; S2, start the laser, the beam combiner combines the laser light emitted by the laser and the ranging light of the ranging sensor, the combined light is reflected and transmitted by the reflector group and focused by the zoom component, and then forms a cable cutting focus at the outlet along the tangent direction of the cable to be cut layer; S3. The rotating mechanism drives the rotating optical path part to rotate, and the laser performs circular cutting on the outer ring of the cable.

[0027] In the above scheme, S1 uses a cable clamp to position the cable and adjusts the relative position of the circular cutting device and the cable to complete the positioning work; S2 combines the laser and ranging light through a beam combiner. The combined light passes through the reflector group and focuses, and then performs point cutting on the cable along the tangent direction at the exit to avoid loss of the internal insulation layer. S3 rotates the rotating mechanism to cut the cable and perform circular cutting on the outer ring of the cable with the cutting focus at the outer ring of the cable.

[0028] Furthermore, S3 includes the following steps: when the rotating mechanism rotates, the fixture moving module drives the cable to move synchronously, so that the laser cuts along the outer ring of the cable.

[0029] The cable is driven to move synchronously by the fixture moving module to ensure that the laser direction is always along the tangent direction of the cable outer ring, with good cutting accuracy.

[0030] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adopts laser cutting to cut the outer layer of the cable, without mechanical contact with the cable, reducing the impact on the internal structure of the cable, and having good cutting quality; the point light source is used to cut along the tangent motion of the cable circumference. Since the movement of the laser beam is always in the tangent direction of the circumference of the cable aluminum film layer, the laser beam will not contact the mesh shielding layer, that is, will not damage the mesh shielding layer. At the same time, since the direction of the laser beam moves along the tangent direction of the cable circumference, it will not pass through the mesh shielding layer and damage the internal insulation layer; 2. The present invention uses a rotating mechanism to rotate the laser light path emitted by the laser, so as to realize the laser cutting of the outer ring of the cable, which is simple to operate and has high cutting efficiency; the laser does not need to move, so the laser stability is guaranteed; 3. The device of the present invention has a long service life and is maintenance-free. The equipment made by the device is small in size, simple in structure and easy to manufacture. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural stereogram of a laser ring cutting device in the first embodiment of the present invention; Figure 2 It is a structural cross-sectional view of a laser ring cutting device in the first embodiment of the present invention; Figure 3 for Figure 2 A magnified view of the structure at center A; Figure 4 for Figure 2 The structural cross-section at B in the middle; Figure 5 This is a schematic diagram of the optical path design in the first embodiment of the present invention; Figure 6 This is a processing flow chart of the first embodiment of the present invention; Figure 7It is a structural stereogram of a laser ring cutting device in the second embodiment of the present invention; In the figure: 1. Laser; 2. Distance sensor; 3. Beam combiner; 4. Rotation mechanism; 5. Incident port; 6. Exit port; 7. Aluminum film layer; 8. Outer insulation layer; 9. Metal sensor; 10. Axial moving module; 11. Axial channel one; 12. Reflector one; 13. Reflector two; 14. Reflector three; 15. Axial channel two; 16. Vertical channel one; 17. Vertical channel two; 18. Connecting tube; 19. Mounting tube; 20. Gear ring; 21. Gear motor; 22. Focusing lens; 23. Adjustment motor; 24. Slide rail; 25. Screw; 26. Optical path hole; 27. Clamp moving module; 28. Optical path tube; 29. ​​Cable clamp. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in 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. In the description of the present invention, it should be noted that the terms front, back, left, right, etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships in which the product is usually placed when in use. They are only for the convenience of describing the present invention or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Embodiment 1

[0033] like Figure 1-5 As shown, a laser ring cutting device includes a static optical path portion, a rotating optical path portion and a cable clamp 29 for positioning cables, wherein the static optical path portion includes a laser 1, a distance measuring sensor 2, a beam combiner 3 and a rotation mechanism 4, wherein the beam combiner 3 is used to combine the laser light of the laser 1 and the distance measuring light of the distance measuring sensor 2 and guide them to the rotating optical path portion, wherein the rotating optical path portion is provided with an incident port 5 and an exit port 6, wherein the rotation mechanism 4 is connected to the incident port 5 of the rotating optical path portion to rotate the rotating optical path portion 360°, wherein the rotating optical path portion includes a reflector group and a zoom assembly, wherein the reflector group is used to reflect the light from the incident port 5 to the exit port 6 to cut the cable.

[0034] In the above scheme, the laser 1 of the static optical path is used to generate laser, and the ranging light of the ranging sensor 2 is combined with the laser through the beam combiner 3. The combined light enters the rotating optical path from the incident port 5, and is emitted from the exit port 6 after multiple reflections by the reflector group. Under the action of the zoom component, the laser forms a focus at the exit port 6 to cut the cable. The rotating mechanism 4 can drive the rotating optical path to rotate, thereby realizing 360° circular cutting of the cable. The cable clamp 29 positions the cable at the rotation axis of the rotating optical path, thereby ensuring uniform cutting of the outer ring of the cable.

[0035] The present invention provides a laser wire stripping solution, which mainly focuses on the aluminum foil ring cutting technology inside the cable. Conventional laser cutting methods use lasers to align the center of the cable and adjust the laser energy, focus or frequency to achieve the cutting effect on the bottom cable. The present invention mainly cuts in a way that the laser beam is always tangent to the circumference of the cable. The laser beam only acts on the aluminum foil layer and does not contact the internal cable.

[0036] Taking the multi-core cable of the electric vehicle high-voltage wiring harness as an example for cutting, the product needs to strip the outer insulation layer 8 and the aluminum film layer 7 of the cable without damaging the internal mesh shielding layer and the internal insulation layer.

[0037] The cable is divided into 5 layers from outside to inside: plastic outer insulation layer 8, aluminum film layer 7, mesh shielding layer, inner insulation layer, and multi-core conductor.

[0038] The main steps are: at a certain distance from the cable end face, use laser to vaporize the aluminum film layer 7 at high temperature, cut the aluminum film layer 7 in a ring, that is, divide the aluminum film layer 7 into two sections, and then use mechanical structure or manual operation to separate the aluminum film from the end face to the ring cutting.

[0039] The difficulty lies in: 1. The aluminum film fits tightly to the mesh shielding layer, and it is difficult to cut accurately without damaging the mesh shielding layer through the mechanical structure, and the cutting efficiency is low; 2. When cutting with conventional galvanometer laser, the cable needs to be flipped or rotated, but the cable is produced in a whole roll and cannot be rotated or flipped as a whole; 3. The aluminum film is usually rotated and wound on the mesh shielding layer, so there will be multiple layers of aluminum film, and there will be gaps in the mesh shielding layer. Using the conventional point light source method, the laser will directly rotate and cut around the cable axis. The laser will pass through the mesh shielding layer and damage the internal insulation layer, causing black spots inside and affecting the quality of the internal cable.

[0040] In order to reduce the overall volume of the equipment, the present invention uses a 50w fiber laser 1 (wavelength 1050~1100nm), the laser 1 is combined with a beam combiner 3, the beam combiner 3 can transmit the fiber light, and the light of the total reflection ranging sensor 2 (650nm), the optical path design uses a hollow rotating motor as the rotating mechanism 4, the motor is connected to the reflector 1 12, the reflector 2 13, and the focusing lens 22, the focusing lens 22 can be adjusted forward and backward to adjust the focal length, and the focusing lens 22 is connected to the reflector 3. A metal sensor 9 is installed outside the optical path to detect the cable arrival signal. The metal sensor 9 uses a photoelectric sensor, and the reflector 1 12, the reflector 2 13, and the reflector 3 14 are all 45° total reflection mirrors.

[0041] The optical path part is fixed on a movable module or a motor as a whole, and is controlled by a servo motor and a controller. The rotating central axis of the rotating optical path part coincides with the central axis of the cable clamping.

[0042] The cable clamp 29 clamps and positions the outer ring of the cable along a ring shape by means of a plurality of clamping claws. The cable clamp 29 may include a pneumatic claw disc or an electric claw disc, or may adopt a manual wire clamp structure.

[0043] The cable is first peeled by rotary cutting to peel off the outer insulation layer 8 of the cable to expose the aluminum film layer 7, and the cable is placed in the cable clamp 29 to fix it. The cable extension length reaches up to 300mm. The device detects the cable cutting position through the metal sensor 9. The aluminum film layer 7 is a metal layer and is lower than the unpeeled outer insulation layer 8, so the cable position signal can be detected by the metal sensor 9. The laser position is adjusted by axially moving the module 10 to align the cutting position of the aluminum film layer 7. The distance from the cable is detected by the built-in distance sensor 2. Since the distance from the distance sensor 2 to the laser head is consistent, the software can calculate the cable diameter. The focus is adjusted by the zoom component based on the calculated cable diameter. The conventional method is to use the laser to align the center of the cable, and to adjust the laser energy, focus or frequency to achieve the damage caused by the cutting of the bottom cable. The present invention is designed to ensure that the laser does not damage the mesh insulation layer inside the cable, and is implemented by a point side cutting method, that is, the laser focus point is on the side of the cable circumference, and the laser cuts along the tangent direction of the aluminum film layer 7, only cutting the aluminum film, and not contacting the internal mesh shielding layer and the inner insulation layer, so as to avoid affecting the quality of the internal cable.

[0044] like Figure 6 As shown, after clicking the circular cutting button, the rotating mechanism 4 moves to perform circular cutting. During the circular cutting process, the hollow rotating motor and the clamp moving module 27 move simultaneously. The hollow rotating motor performs circular motion, and the clamp moving module 27 moves synchronously to draw a circular motion. During the movement, the cable is clamped and fixed and does not rotate. Through the synchronous control of the software, it is ensured that the laser travels a circle on the tangent of the cable diameter. After the cutting is completed, the aluminum film is divided into two sections from the cutting point, and the aluminum film circular cutting of a cable is completed.

[0045] The main method of the present invention is that when the cable does not make a circular motion, the laser 1 can be kept stationary and the optical path can be rotated along the circumferential tangent of the cable. The laser is rotated by a hollow motor, and the movement of the XY axis clamp moving module 27 makes the movement of the laser beam always move in the circumferential tangent direction of the cable aluminum film layer 7. The distance sensor 2 of the present invention can be replaced with a 3D galvanometer in combination with the automatic zoom component to achieve the distance sensor 2. The present invention uses an optical fiber light source as an example. Different light sources may be used for different materials, such as: carbon dioxide light source, ultraviolet light, and green light.

[0046] Furthermore, it comprises a metal sensor 9 for detecting the axial position of the metal layer of the cable, the static optical path is connected with an axial moving module 10, and the metal sensor 9 and the axial moving module 10 are both electrically connected to the controller.

[0047] The metal sensor 9 is provided to detect the axial position of the metal layer of the cable, and the axial moving module 10 is used to make the laser position of the outlet 6 correspond to the cut metal layer, so that positioning is convenient.

[0048] Furthermore, the rotating optical path portion includes an axial channel 1 11, a reflector 1 12, a vertical channel 1 16, a reflector 2 13, an axial channel 2 15, a reflector 3 14 and a vertical channel 2 17 which are connected in sequence.

[0049] After entering the rotating optical path, the light is reflected by the reflector 1 12, the reflector 2 13, and the reflector 3 14 in sequence, and then emitted from the exit 6 to cut the cable. When the rotating optical path rotates, the direction of the laser is adjusted accordingly to perform annular cutting on the outer ring of the cable.

[0050] Furthermore, the zoom assembly includes a focusing lens 22 , an adjustment motor 23 and a slide rail 24 , the focusing lens 22 is slidably connected to the slide rail 24 , the adjustment motor 23 is connected to a lead screw 25 , and the lead screw 25 is screwed to the focusing lens 22 .

[0051] The focusing lens 22 is slidably connected via the slide rail 24, and the adjusting motor 23 drives the screw rod 25 to rotate, so as to adjust the focusing lens 22 to move axially to achieve focusing.

[0052] The distance sensor 2 and the adjustment motor 23 are both electrically connected to the controller to adjust the focal length according to the detection result of the distance sensor 2 .

[0053] Furthermore, the metal sensor 9 is connected to a fixing bracket, and the metal sensor 9 is positioned by the fixing bracket.

[0054] The metal sensor 9 is positioned by providing a fixed bracket, which facilitates axial positioning of the cutting position.

[0055] Furthermore, the static optical path portion includes an optical path tube 28 connected to the outlet end of the laser 1 , the beam combiner 3 and the distance sensor 2 are mounted on the optical path tube 28 , an optical path hole 26 is opened in the middle of the rotating mechanism 4 , and the incident port 5 is connected to the optical path hole 26 .

[0056] The external light is isolated by the optical path tube 28, and the laser 1, the beam combiner 3, and the distance sensor 2 are connected and positioned. The light combined by the beam combiner 3 passes through the optical path hole 26 in the middle of the rotating mechanism 4 and enters the rotating optical path part from the incident port 5.

[0057] Furthermore, it includes a clamp moving module 27 , and the clamp moving module 27 is connected to the cable clamp 29 .

[0058] The fixture moving module 27 is used to drive the cable fixture 29 and the cable to move, which is convenient for cable positioning. During the processing, the cable can be moved in accordance with the direction of the laser so that the laser cuts along the tangent direction of the cable periphery.

[0059] The fixture moving module 27 includes a two-axis moving module.

[0060] A working method of the above-mentioned laser ring cutting device comprises the following steps: S1. Position the cable using the cable clamp 29 and adjust the rotating optical path portion outlet 6 to the cable processing position; S2, start the laser 1, the beam combiner 3 combines the laser emitted by the laser 1 and the ranging light of the ranging sensor 2, and the combined light is reflected and conducted by the reflector group and focused by the zoom component to form a cable cutting focus at the outlet 6 along the tangent direction of the cable to be cut layer; S3, the rotating mechanism 4 drives the rotating optical path part to rotate, and the laser performs circular cutting on the outer ring of the cable.

[0061] In the above scheme, S1 uses the cable clamp 29 to position the cable and adjusts the relative position of the circular cutting device and the cable to complete the positioning work; S2 combines the laser and the ranging light through the beam combiner 3, and the combined light passes through the reflector group and focuses, and then performs point cutting on the cable along the tangent direction at the outlet 6 to avoid loss of the internal insulation layer. S3 rotates the rotating mechanism 4 to cut the cable and perform circular cutting on the outer ring of the cable with the cutting focus at the outer ring of the cable.

[0062] The distance measuring sensor 2 measures the distance and then feeds back to the controller, and the controller controls the focusing component to mechanically focus.

[0063] Furthermore, S3 includes the following steps: when the rotating mechanism 4 rotates, the clamp moving module 27 drives the cable to move synchronously, so that the laser cuts along the outer ring of the cable.

[0064] The cable is driven to move synchronously by the fixture moving module 27 to ensure that the laser direction is always along the tangent direction of the cable outer circle, and the cutting accuracy is good. Embodiment 2

[0065] like Figure 7 As shown, a laser ring cutting device of this embodiment is further optimized on the basis of the first embodiment: Furthermore, an angle adjustment mechanism is provided at the second axial channel 15 , and the angle adjustment mechanism is used to adjust the direction of the outlet 6 .

[0066] By providing an angle adjustment mechanism, the direction of the laser outlet 6 can be adjusted according to the change in the cable size, so that the laser direction remains tangent to the circumferential direction of the cable. There is no need to adjust the cable position by moving the clamp module 27.

[0067] Furthermore, the angle adjustment mechanism comprises a connecting tube 18 and a mounting tube 19 which are rotatably connected. The outer ring of the connecting tube 18 is provided with a gear ring 20 , and the mounting tube 19 is provided with a gear motor 21 for cooperating with the gear ring 20 .

[0068] One end of the connecting tube 18 is rotatably sleeved in the mounting tube 19, and the gear motor 21 is used to drive the gear ring 20 to rotate, thereby adjusting the relative angle between the connecting tube 18 and the mounting tube 19. The mounting tube 19 is connected to one side of the reflector 2 13, and the connecting tube 18 is connected to one side of the reflector 3 14, thereby realizing the adjustment of the light output direction.

[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser ring cutting device, characterized in that: It includes a static optical path part, a rotating optical path part and a cable clamp for positioning cables, wherein the static optical path part includes a laser, a distance measuring sensor, a beam combiner and a rotating mechanism, wherein the beam combiner is used to combine the laser light of the laser and the distance measuring light of the distance measuring sensor and guide them to the rotating optical path part, wherein the rotating optical path part is provided with an incident port and an exit port, wherein the rotating mechanism is connected to the incident port of the rotating optical path part to rotate the rotating optical path part 360°, wherein the rotating optical path part includes a reflector group and a zoom component, wherein the reflector group is used to reflect the incident port light to the exit port to cut the cable.

2. The laser ring cutting device according to claim 1, characterized in that: It comprises a metal sensor for detecting the axial position of the metal layer of the cable, the static optical path is connected with an axial movement module, and the metal sensor and the axial movement module are both electrically connected to the controller.

3. The laser ring cutting device according to claim 1, characterized in that: The rotating optical path portion comprises an axial channel 1, a reflector 1, a vertical channel 1, a reflector 2, an axial channel 2, a reflector 3 and a vertical channel 2 which are connected in sequence.

4. The laser ring cutting device according to claim 3, characterized in that: An angle adjustment mechanism is provided at two locations of the axial channel, and the angle adjustment mechanism is used to adjust the direction of the outlet.

5. The laser ring cutting device according to claim 4, characterized in that: The angle adjustment mechanism comprises a connecting tube and a mounting tube which are rotatably connected, the outer ring of the connecting tube is provided with a gear ring, and the mounting tube is provided with a gear motor for cooperating with the gear ring.

6. The laser ring cutting device according to claim 2, characterized in that: The zoom assembly comprises a focusing lens, an adjusting motor and a slide rail, the focusing lens is slidably connected to the slide rail, the adjusting motor is connected to a lead screw, and the lead screw is screwed to the focusing lens.

7. The laser ring cutting device according to claim 1, characterized in that: The static optical path part comprises an optical path tube connected to the laser outlet end, the beam combiner and the distance sensor are mounted on the optical path tube, an optical path hole is opened in the middle of the rotating mechanism, and the incident port is connected to the optical path hole.

8. The laser ring cutting device according to claim 1, characterized in that: It includes a clamp moving module, and the clamp moving module is connected to the cable clamp.

9. A working method of the laser ring cutting device according to any one of claims 1 to 8, characterized in that: The steps include: S1. Position the cable using a cable clamp and adjust the exit port of the rotating optical path to the cable processing position; S2, start the laser, the beam combiner combines the laser light emitted by the laser and the ranging light of the ranging sensor, the combined light is reflected and transmitted by the reflector group and focused by the zoom component, and then forms a cable cutting focus at the outlet along the tangent direction of the cable to be cut layer; S3. The rotating mechanism drives the rotating optical path part to rotate, and the laser performs circular cutting on the outer ring of the cable.

10. The working method of the laser ring cutting device according to claim 8, characterized in that: S3 includes the following steps: when the rotating mechanism rotates, the fixture moving module drives the cable to move synchronously, so that the laser cuts along the outer ring of the cable.

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