An automatic light-controlled swinging knife type live working cable stripping device

Abstract

The present invention discloses an automatic light-controlled swing-knife type live working cable stripping device, which comprises a stripping device base body, a rotary support unit, a mechanical feed unit and a color photoelectric control unit. The rotary support unit is arranged on the stripping device base body, the mechanical feed unit is arranged on the rotary support unit, and the color photoelectric control unit is arranged on the rotary support unit; the mechanical feed unit includes a motor, an eccentric bushing, a stripping knife, a tool path, a tool path cover and a tool shaft. Advantages: The structure of the present invention is compact, with a unique crank and grooved wheel design, which ensures the feed angle, has a small feed force, and a stable cutting speed into the cable sheath; the mechanical structure and the electrical control part of this device are extremely simple, with a light weight, and can be directly installed and used in cooperation with the externally purchased stripping device base body; this device can be directly applicable to cables within a certain diameter range without replacing the tool holder or adjusting the tool.

Description

Technical Field

[0001] The present invention relates to an automatic light-controlled swing-knife type live cable stripping device, specifically an automatic light-controlled swing-knife type cable outer layer live stripping device that can cooperate with a robot for aerial work, in particular a direct current, photoelectrically controlled live wire stripping device that can be used for lossless stripping of outer insulation layers of high-voltage cables, is adaptive to a variety of wire diameters, and improves the level of automation. Background Art

[0002] In order to improve efficiency and avoid the impact of power outages on users during maintenance or construction of high-voltage cables for overhead power transmission in the power grid, it is necessary to use a robot to strip the cables while they are energized. During the robot operation, the robotic arm needs to hold a wire stripper to complete the stripping process. The original solution was to adapt to the single-drive operation of the insulating rod and adopted a solution of replacing the tool holder to adjust the tool angle.

[0003] The operator must do the following two things during the operation:

[0004] 1. It is necessary to select and install a tool holder of appropriate specifications according to each specification of the insulated overhead line and the outer diameter of the insulation skin. The inner diameter of the tool holder should be selected according to the outer diameter of the insulation;

[0005] 2. Adjust the tool angle according to the thickness of the insulation and the outer diameter of the conductor, and the distance between the tool tip and the conductor should also be selected according to needs;

[0006] In view of the above conditions, operators need to obtain cable specification information in advance. Because the adaptability of a single tool holder is small and the tool adjustment is highly subjective, incorrect tool holder selection and angle adjustment will directly lead to wire stripping failure. In actual on-site operations, it is almost impossible to accurately grasp the specification information of overhead cables, and the adjustment of tools, tool holder selection, and angle adjustment are all very cumbersome and difficult.

[0007] The existing wire stripper needs to adjust the tool position and angle multiple times when working with the robot's mechanical arm. The tool holder needs to be replaced every time the cable is changed. Therefore, the original wire stripping solution is difficult and cumbersome to operate, inefficient, unreliable, and poorly adaptable. In view of the above problems, it is urgent to develop a corresponding device to solve them. Summary of the invention

[0008] The purpose of the present invention is to propose an automatic light-controlled swing knife type live cable stripping device for electric work in view of the problems in the background technology. The technical scheme adopted is: an automatic light-controlled swing knife type live cable stripping device for electric work, comprising a stripper base, a rotating support unit, a mechanical feed unit and a color photoelectric control unit, wherein the rotating support unit is arranged on the stripper base, the mechanical feed unit is arranged on the rotating support unit, and the color photoelectric control unit is arranged on the rotating support unit;

[0009] The mechanical feed unit includes a motor, an eccentric bushing, a wire stripping knife, a tool path, a tool path cover, and a tool shaft. The motor is arranged on the rotary support unit. The eccentric bushing is sleeved on the motor shaft of the motor. A pin shaft is axially extended on the outer end face of the eccentric bushing. The pin shaft is eccentrically arranged with the motor shaft. An external thread is arranged at the free end of the pin shaft. The pin shaft is inserted into the pin shaft hole on the wire stripping knife and locked by a nut. The eccentric bushing, the pin shaft, and the wire stripping knife form a crank structure. The tool path is arranged on the rotary support unit. The tool path cover is arranged on the tool path. The wire stripping knife is inserted into the tool path. The tool shaft is inserted into the round hole on the wire stripping knife, and both ends of the tool shaft are inserted into the arc-shaped grooves on the tool path. The tool path, the tool shaft, and the crank structure form a crank-grooved wheel cycloidal knife mechanism.

[0010] Preferably, the rotary support unit is integrally in a cage-like structure. The rotary support unit includes a connecting flange, a motor plate, and a connecting column. The connecting flange has a connecting flange opening corresponding to the size of the bracket opening on the wire stripper base to facilitate the cable to be inserted. On one side end face of the connecting flange, three fan-shaped flat columns arranged annularly and concentric with the connecting flange and with a sector cross-section are provided. The head end of the flat column is a square small step. A threaded hole is axially opened from the end face on the square small step. The shoulder plane of the square small step is the positioning surface of the motor plate. A groove for engaging the tool path cover is arranged on one side end face of the connecting flange. Three square openings are opened on one side end face of the motor plate to connect the three square small steps respectively. An opening groove consistent with the opening of the connecting flange opening is opened on the motor plate. The two ends of the connecting column are respectively connected to the connecting flange and the motor plate. The present invention

[0011] Preferably, the roots of two of the flat columns are designed with steps on one side to form an L-shaped structure of the flat columns.

[0012] Preferably, the middle of the tool path is a square through hole. The wire stripping knife is inserted into the square through hole and the knife head of the wire stripping knife extends out. On the hole wall of the square through hole, two arc-shaped grooves for cooperating with the tool shaft to move are symmetrically arranged up and down. One of the arc-shaped grooves close to the tool path cover penetrates the hole wall.

[0013] Preferably, the color photoelectric control unit includes an optical fiber head, a color sensor, a rechargeable lithium battery, two DC relays, a start button, a stop button, and a double-pole double-throw 6-pin toggle switch. The optical fiber head is movably arranged on the motor plate through an optical fiber seat. The color sensor, the rechargeable lithium battery, the two DC relays, the start button, the stop button, and the double-pole double-throw 6-pin toggle switch are all fixed on the motor plate. The color photoelectric control unit effectively prevents the feed from misoperating and damaging the cable core wire when the circuit is powered off; using DC relays effectively prevents the influence of high voltage on the control system during live work

[0014] For the optimization of the technical solution of the present invention, the automatic light-controlled swing knife type live working cable stripping device further includes a bump nail and a pressure lever micro switch installed on the stripper base. The bump nail is movably arranged on the upper part of the opening and closing card of the stripper base through a bump nail seat, and the pressure lever micro switch is installed on the lower part of the opening and closing card of the stripper base. The pressure lever micro switch is electrically connected to a rechargeable lithium battery. An axial hole is provided on the lower part of the opening and closing card, and a kidney-shaped groove is opened beside the pressure lever micro switch. The kidney-shaped groove communicates with the axial hole on the lower part of the card, and a wire passing hole is formed by radially penetrating the top of the kidney-shaped hole with a round hole. The cable of the pressure lever micro switch is connected to the electrical connection and the rechargeable lithium battery through this wire passing hole. This design can place the cable inside the rotating body, solve the electrical connection problem of the rotating parts on both sides of the fixed bracket, and the rechargeable lithium battery is convenient for field high-altitude operations.

[0015] For the optimization of the technical solution of the present invention, the motor is an ultra-low speed DC reduction motor, which can ensure that when the motor drives the stripping feed, the cutter head can accurately stop when it reaches the wire core.

[0016] For the optimization of the technical solution of the present invention, the edge shape of the stripping knife is U-shaped, and the tail end of the chip removal groove of the stripping knife faces upward. This design can effectively solve the problem that the stripped outer skin enters the tool path along the chip removal groove of the knife and causes jamming.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. For the device of the present invention, the unique crank and slotted wheel design ensures the feed angle, with a small feed force and a stable cutting speed into the wire skin; the mechanical structure and electrical control part of this device are extremely simple, light in weight, and can be directly installed and used in cooperation with the purchased stripper base; this device can be directly applicable to cables within a certain diameter range without replacing the tool holder or adjusting the tool. Description of the Drawings

[0019] Figure 1 is a three-dimensional schematic diagram of the device of the present invention.

[0020] Figure 2 is a structural schematic diagram of the stripper base in the device of the present invention.

[0021] Figure 3 is a structural schematic diagram of the rotary support unit in the device of the present invention.

[0022] Figure 4 is a schematic diagram of the coupling flange.

[0023] Figure 5 is in Figure 4 is an assembly drawing with an eccentric bushing, a stripping knife, and a tool shaft added.

[0024] Figure 6It is an exploded view of an eccentric bushing, a wire stripping knife, a tool path, a tool path cover, and a tool shaft.

[0025] Figure 7 It is a three-dimensional view of the wire stripping knife.

[0026] Figure 8 It is a side view of the wire stripping knife.

[0027] Figure 9 It is a front view of the wire stripping knife.

[0028] Figure 10 It is a schematic diagram of the installation positions of the fiber optic head and the wire stripping knife on the motor board Figure 1 .

[0029] Figure 11 It is a schematic diagram of the installation positions of the fiber optic head and the wire stripping knife on the motor board Figure 2 .

[0030] Figure 12 It is a schematic diagram of the installation position of the contact head on the opening and closing clip of the wire stripper base.

[0031] Figure 13 It is the circuit diagram of the device in this embodiment.

[0032] Figure 14 It is a schematic diagram of the device in this embodiment clamped on the cable. Detailed implementation manners

[0033] The technical solution of the present invention will be described in detail below, but the protection scope of the present invention is not limited to the described embodiments.

[0034] To make the content of the present invention more obvious and understandable, the following is combined with the attached Figures 1 - 14 and specific implementation manners for further description.

[0035] To make the purpose, technical solution and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] As Figure 1 shown, an automatic light-controlled swing knife type live working cable stripping device includes a wire stripper base 1, and is characterized by further including a rotary support unit 2, a mechanical feed unit 3, and a color photoelectric control unit 4. The rotary support unit 2 is arranged on the wire stripper base 1, the mechanical feed unit 3 is arranged on the rotary support unit 2, and the color photoelectric control unit 4 is arranged on the rotary support unit 2.

[0037] As Figure 2As shown, the wire stripper base body 1 in this embodiment is a known technology in the art and is known to those skilled in the art. The wire stripper base body 1 is opened and clamped on the overhead cable, and then closed and locked and can rotate around the cable; in this embodiment, the rotary support unit 2 and the rotating part on the wire stripper base body 1 are directly connected by a screw rod and fixed coaxially. As Figure 14 shown.

[0038] As Figure 3 shown, the rotary support unit 2 is integrally in a cage-like structure. The rotary support unit 2 includes a connecting flange 2-1, a motor plate 2-2 and a connecting column 2-3. The cage-like rotary support unit 2 ensures sufficient strength to support other components.

[0039] As Figure 3 shown, one end face of the connecting flange 2-1 is connected and fixed to the end face of the rotating body of the wire stripper base body 1 by bolts and rotates therewith. The motor plate 2-2 and the connecting flange 2-1 are fixed together by three flat upright columns 2-4 and a connecting column 2-3 on the connecting flange 2-1 to form a cage-like structure to support other components.

[0040] As Figure 4 shown, the connecting flange 2-1 has a connecting flange opening 2-1-1 corresponding to the size of the bracket opening on the wire stripper base body 1 for facilitating the cable to be inserted. On one side end face of the connecting flange 2-1, three annularly arranged flat upright columns 2-4 concentric with the connecting flange 2-1 and having a fan-shaped cross section are provided. The head end of the flat upright column 2-4 is a square small step 2-4-1. A threaded hole is axially opened from the end face on the square small step 2-4-1. The shoulder plane of the square small step 2-4-1 is the positioning surface of the motor plate 2-2; a groove 2-1-2 for engaging the tool rail cover 3-5 is provided on one side end face of the connecting flange 2-1.

[0041] As Figure 4 shown, two of the three flat upright columns 2-4 have a step designed on one side of the root, forming an L-shaped structure of the flat upright column 2-4. The L-shaped flat upright column 2-4 increases the strength of the root of the upright column and at the same time provides support and positioning for the installation of the battery and the relay.

[0042] As Figure 3 shown, three square openings 2-2-1 are opened on one side end face of the motor plate 2-2 and are respectively connected to the three square small steps 2-4-1. An opening groove 2-2-2 with the same opening as the connecting flange opening 2-1-1 is opened on the motor plate 2-2; both ends of the connecting column 2-3 are respectively connected to the connecting flange 2-1 and the motor plate 2-2. The motor plate 2-2 has notches 2-2-3 at positions corresponding to the two L-shaped flat upright columns 2-4 of the connecting flange 2-2, which respectively correspond to the shapes of the battery and the relay.

[0043] The overall shape of the motor board 2-2 in this embodiment is approximately "7"-shaped. On the protruding part below the motor board 2-2, there are a motor end face mounting hole and a motor mounting screw hole for the inner motor 3-1 of the mechanical feed unit 3.

[0044] As Figure 3 shown, the connecting column 2-3 in this embodiment is designed close to the tool path position. One end of the connecting column has a stud that mates with the threaded hole on the connecting flange 2-1, and the other end has a threaded hole that is fastened with a screw through the through hole on the motor board 2-2. Four square planes are milled in the middle of the connecting column 2-3 to facilitate the disassembly of the connecting column.

[0045] As Figure 5 shown, the mechanical feed unit 3 includes a motor 3-1, an eccentric bushing 3-2, a wire stripping knife 3-3, a tool path 3-4, a tool path cover 3-5, and a tool shaft 3-6. The motor 3-1 is arranged on the rotary support unit 2. The eccentric bushing 3-2 is sleeved on the motor shaft of the motor 3-1. An axially extending pin shaft 3-2-2 is arranged on the outer end face of the eccentric bushing 3-2. The pin shaft 3-2-2 is eccentrically arranged with the motor shaft. A section of external thread is arranged at the free end of the pin shaft 3-2-2. The pin shaft 3-2-2 is inserted into the pin hole on the wire stripping knife 3-3 and locked with a nut. The eccentric bushing 3-2, the pin shaft 3-2-2, and the wire stripping knife 3-3 form a crank structure. The tool path 3-4 is arranged on the rotary support unit 2. The tool path cover 3-5 is arranged on the tool path 3-4. The wire stripping knife 3-3 is inserted into the tool path 3-4. The tool shaft 3-6 is inserted into the round hole on the wire stripping knife 3-3, and both ends of the tool shaft 3-6 are inserted into the arc-shaped grooves on the tool path 3-4. The tool path 3-4, the tool shaft 3-6, and the crank structure form a crank-slot wheel cycloidal knife mechanism.

[0046] As Figure 1 、 5 and 6 shown, the motor 3-1 is preferably an ultra-low speed DC reduction motor with an output speed less than 1 rpm. The eccentric bushing 3-2 is sleeved on the output shaft of the motor 3-1, and the eccentric bushing 3-2 is fixed on the motor shaft by a set screw on the side of the eccentric bushing 3-2. The pin shaft 3-2-2 on the outer end face of the eccentric bushing 3-2 is eccentric with the motor shaft.

[0047] As Figure 7 、 8 and 9 shown, the edge shape of the wire stripping knife 3-3 is U-shaped, and the end of the chip removal groove of the wire stripping knife 3-3 faces upward. There is a through hole 3-3-4 for mating with the pin shaft in the middle and the rear of the tool body of the wire stripping knife 3-3. As Figure 5 shown. The tool shaft 3-6 is inserted into the through hole 3-3-3 in the middle of the tool body, and the pin shaft 3-2-2 is installed in the through hole at the rear of the tool body. The pin shaft 3-2-2 is locked with a nut through the external thread at the free end.

[0048] As Figure 8 and 9As shown, the U-shaped blade edge of the wire stripping knife 3-3 has a bottom blade edge 3-3-1 for radially cutting into the cable outer sheath, and the two side blade edges 3-3-2 can axially strip the cable outer sheath when the wire stripping knife moves laterally. The rear part of the chip removal groove 3-3-3 of the wire stripping knife 3-3 is arc-shaped upward. This design can effectively solve the problem that the stripped outer sheath enters the tool rail along the chip removal groove of the tool and causes jamming.

[0049] As Figure 5 and 6 shown, the tool rail 3-4 and the tool rail cover 3-5 are connected and fixed by countersunk head screws on both sides. The tool rail 3-4 is fixed on the motor plate 2-2 through bolt holes, and the tool rail cover 3-5 is embedded in the square groove 2-1-2 on the connecting flange 2-1, which not only has a positioning function but also prevents the tool rail from slipping under force.

[0050] As Figure 6 shown, the middle of the tool rail 3-4 is a square through hole 3-4-1. The wire stripping knife 3-3 is inserted into the square through hole 3-4-1 and the tool head of the wire stripping knife 3-3 protrudes. On the hole wall of the square through hole 3-4-1, two arc-shaped grooves 3-4-2 that cooperate with the tool shaft 3-6 to move are symmetrically arranged up and down. One of the arc-shaped grooves 3-4-2 close to the tool rail cover 3-5 penetrates the hole wall. In this embodiment of the invention, the tool body design is creatively used as a connecting rod. Two round holes 3-3-3 are designed in the middle and rear parts of the wire stripping knife 3-3. The tool shaft 3-6 passes through the through hole 3-3-3 in the middle of the tool body and rolls back and forth along the arc-shaped grooves in the two arc-shaped grooves 3-4-2 of the tool rail 3-4, forming a unique crank-slot wheel swing tool mechanism with the crank structure of the eccentric shaft sleeve 3-2 of the reduction motor at the rear of the wire stripping knife 3-3. Driven by the motor 3-1 and the eccentric shaft sleeve 3-2, the wire stripping knife 3-3 is supported and limited by the tool shaft in the middle hole and swings back and forth along the arc-shaped groove 3-4-2. Due to the back-and-forth swing of the tool body of the wire stripping knife 3-3, the tool head forms a special motion curve.

[0051] In this embodiment, this crank swing tool design uses the simplest mechanism to realize the feed and retraction of the wire stripping knife, ensuring the most labor-saving cutting angle of the wire stripping knife. At the same time, the crank rotation angle is the largest and the feed speed is the slowest during the feeding process, effectively preventing the tool tip from damaging the wire core.

[0052] As Figure 1 and 10 shown, the color photoelectric control unit 4 includes an optical fiber head 4-1, a color sensor 4-2, a rechargeable lithium battery 4-3, two DC relays, a start button, a stop button, and a double-pole double-throw 6-pin toggle switch.

[0053] The optical fiber head 4-1 is movably arranged on the motor plate 2-2 through an optical fiber seat 4-4, and the color sensor 4-2, the rechargeable lithium battery 4-3, the two DC relays, the start button, the stop button, and the double-pole double-throw 6-pin toggle switch are all fixed on the motor plate 2-2.

[0054] As Figure 10 and 11 shown, the fiber optic head 4-1 is disposed below the wire stripping knife 3-3 and points to the center position of the cable. The fiber optic head 4-1 is mounted on the fiber optic head seat 4-5 and fastened with a nut.

[0055] As Figure 10 and 11 shown, the fiber optic head seat 4-5 is mounted on the fiber optic seat 4-4 by a screw. The fiber optic head seat 4-5 has a kidney-shaped hole for front and back adjustment. There are multiple threaded holes on the fiber optic seat 4-4 for adjusting the horizontal angle of the fiber optic. There is a central hole and an arc-shaped kidney hole on the side of the fiber optic seat, which is fixed on the motor board 2-2 by a screw and can rotate around the central hole along the arc-shaped kidney hole.

[0056] The color photoelectric control unit 4. After the circuit is started, the color sensor 4-2 is turned on and the fiber optic head 4-1 starts to detect. When the black cable outer skin is detected, the circuit operates normally. When the wire stripping knife 3-3 strips off the cable outer skin and the white metal wire core is exposed, the fiber optic head immediately controls the DC relay to cut off the circuit when it detects the white metal wire core, the motor 3-1 stops feeding, and the rotating part on the wire stripping base 1 continues to rotate around the cable.

[0057] As Figure 12 shown, the automatic optical control swing knife type live working cable stripping device further includes a bump nail 5 and a pressure bar micro switch 6 mounted on the wire stripping base 1.

[0058] The bump nail 5 is movably disposed on the upper part of the opening and closing clip of the wire stripping base 1 through a bump nail seat 7. The pressure bar micro switch 6 is installed on the lower part of the opening and closing clip of the wire stripping base 1. The pressure bar micro switch 6 is electrically connected to the rechargeable lithium battery 4-3. An axial hole is provided on the lower part of the opening and closing clip, and a kidney slot is opened beside the pressure bar micro switch 6. The kidney slot communicates with the axial hole on the lower part of the opening and closing clip, and a round hole radially penetrates through the top of the kidney hole to form a wire routing hole 6-1, which is convenient for the wire routing of the micro switch to be connected to the power control part.

[0059] As Figure 12As shown in the figure, in this embodiment, the rivet 5 has an inverted conical head and is installed on the rivet seat 7. The rivet seat 7 has a waist-shaped groove for adjusting the fixed position back and forth. The head of the rivet 5 is inverted conical, such as the head of a countersunk screw, to ensure that when the upper part of the opening and closing clip of the wire stripper base body 1 is closed downward, it can reliably press on the lever of the micro switch 6 with a pressure lever, and can smoothly slide over the lever of the micro switch 6 with a pressure lever when opening. The rivet seat 7 is installed on the upper part of the opening and closing clip of the electric wire stripper base body 1, and the micro switch 6 with a pressure lever is installed on the lower part of the opening and closing clip of the wire stripper base body 1. The lever of the micro switch 6 with a pressure lever coincides with the mating surfaces of the upper and lower halves of the engaging part of the wire stripper base body 1. The body of the micro switch 6 with a pressure lever is fixed on the flange side of the lower half of the opening and closing clip by a screw.

[0060] In this embodiment, the combination of the rivet 5 and the micro switch 6 with a pressure lever on the opening and closing clip of the wire stripper base body 1 realizes the action of simulating manual pressing of the start button. Driven by a special designed crank and slotted wheel mechanism with an ultra-low speed DC reduction motor, the feeding is realized. At the same time, the opening and closing clip of the wire stripper base body 1 rotates around the cable to start stripping the outer skin of the cable. When the fiber optic head of the color sensor under the stripping knife detects a silver-white wire core different from the black outer skin, the color sensor control circuit system is powered off and the motor stops feeding, effectively preventing misoperation caused by color detection errors and damage to the wire core when the motor feeds again. At the same time, manual start / stop buttons and a motor forward / reverse toggle switch are provided.

[0061] As Figure 13 shown, in this embodiment, an automatic light-controlled swing knife type live working cable stripping device, when the fiber optic head of the color sensor detects a silver-white wire core different from the black outer skin in a simple circuit design, the color sensor control circuit system is powered off.

[0062] An automatic light-controlled swing knife type live working cable stripping device in this embodiment has the following specific working process:

[0063] This device is directly connected and coaxially fixed to the rotating part of the opening and closing clip of the wire stripper base body 1 with a screw. When starting to work, the opening and closing clip is in an open state; the connecting flange opening 2-1-1 of the connecting flange 2-1 in the rotating support unit 2 and the opening slot 2-2-2 of the motor plate 2-2 are in the same position as the opening of the opening and closing clip (bracket opening), ensuring that the overhead cable can be smoothly clamped.

[0064] After the cable is inserted, the opening and closing card rotates forward to close and lock. During this process, the flat surface of the head of the stud installed on the upper part of the opening and closing card presses down the pressure rod of the micro switch 6 with a rod installed on the lower part of the opening and closing card, triggering the micro switch 6 with a rod to start the control circuit. When the stud 5 continues to move downward, the stud head will slide over the head end of the pressure rod, the pressure rod will return to a free state, and the micro switch 6 with a rod will reset, ensuring that the circuit can be controlled by the relay to cut off the power. After the circuit is started, the motor 5-1 is energized and the output shaft rotates, and the pin 3-2-2 on the eccentric shaft sleeve 3-2 rotates in the through hole 3-3-3 at the rear of the blade body of the wire stripping knife 3-3. There is a rotatable knife shaft 3-6 in the through hole in the middle of the blade body of the wire stripping knife 3-3. Both ends of the knife shaft 3-6 roll forward and backward along the arc groove in the two arc grooves 3-4-2 of the knife track 3-4, thus forming a special crank groove wheel mechanism.

[0065] When the eccentric sleeve 3-2 on the output shaft of the motor 3-1 rotates, the wire stripping knife 3-3 is driven to swing in the knife track 3-4, and the knife head of the wire stripping knife 3-3 moves in a special annular closed curve to ensure that it slowly cuts into the cable rubber at a very small cutting angle at a position deviating from the cable axis.

[0066] The device rotates around the cable driven by the opening and closing card, and the wire stripping knife peels off the cable rubber in a ring shape. After the circuit is started, the color sensor 4-2 is turned on, and the optical fiber head 4-1 starts to detect. When the black cable sheath is detected, the circuit operates normally. When the wire stripping knife peels off the cable sheath and the white metal wire core is exposed, the optical fiber head detects the white metal wire core and immediately controls the DC relay to cut off the circuit, the motor stops feeding, and the opening and closing card continues to rotate around the cable and move horizontally. After stripping to the specified length, the opening and closing card stops in place and the rotating wire stripping knife cuts off the stripped wire sheath, the opening and closing card reverses, and the opening and closing card opens to complete the stripping operation.

[0067] During the opening process, when the stud 5 moves upward, the head of the stud hits the microswitch pressure rod, and the pressure rod is pushed upward. The inverted cone will slide from the head end of the pressure rod, and then the pressure rod will return to a free state, ensuring that the system will not be triggered to start again, completely achieving the same effect as manually pressing the start button once.

[0068] The device is equipped with start and stop buttons, which can manually start and stop the system, and is equipped with a miniature double-pole double-throw 6-pin toggle switch to manually control the motor forward and reverse rotation, advance and retract the knife, making the operation more flexible and convenient.

[0069] An automatic light-controlled swing-knife type live cable stripping device in this embodiment can be used in conjunction with a robot arm for live operations. The mechanism is driven by the robot arm to rotate on the cable to strip off a whole circle of the cable sheath, and then driven by the robot arm to move along the cable to strip off a section of the cable sheath for subsequent operations.

[0070] The implementation process of the automatic light-controlled swing-knife type live working cable stripping device in this embodiment in cooperation with a robotic arm is described as follows: The stripping tool base 1 is connected to the robotic arm. The opening and closing clamp of the stripping tool base 1 is opened, clamped on the overhead cable, and then the opening and closing clamp rotates forward to close and lock, and rotates around the cable.

[0071] The mechanical feed unit 3 starts to feed. After the core in the cable is stripped, the motor stops feeding. After the robotic arm moves laterally to strip the specified length of the cable sheath and stops, the device rotates in place for one circle, cuts off the stripped cable sheath, and the robotic arm drives the opening and closing clamp of the stripping tool base 1 to rotate reversely to open, and the stripping operation is completed.

[0072] When the automatic light-controlled swing-knife type live working cable stripping device is used in cooperation with a robotic arm, the time from when the opening and closing clamp closes and the system starts to when the robotic arm starts to feed is set by the robotic arm control system. After the robotic arm moves laterally to feed, the outer cable sheath is discharged from above the stripping knife. When the specified length is stripped, the robotic arm stops moving laterally, and the opening and closing clamp stops at the original position to rotate the stripping knife to cut off the stripped cable sheath. The robotic arm drives the opening and closing clamp to rotate reversely, and the opening and closing clamp opens to complete the cable stripping operation.

[0073] Parts not involved in the present invention are the same as or can be implemented by using the prior art.

[0074] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as a limitation of the present invention itself. Various changes can be made in its form and details without departing from the spirit and scope of the present invention defined by the appended claims.

Claims

1. An automatic light-controlled swing-knife type live working cable stripping device, comprising a stripping device base body (1), characterized in that It further includes a rotary support unit (2), a mechanical feed unit (3), and a color photoelectric control unit (4). The rotary support unit (2) is arranged on the wire stripper base body (1), the mechanical feed unit (3) is arranged on the rotary support unit (2), and the color photoelectric control unit (4) is arranged on the rotary support unit (2). The mechanical feed unit (3) includes a motor (3-1), an eccentric bushing (3-2), a wire stripping knife (3-3), a tool rail (3-4), a tool rail cover (3-5), and a tool shaft (3-6). The motor (3-1) is arranged on the rotary support unit (2). The eccentric bushing (3-2) is sleeved on the motor shaft of the motor (3-1). An insertion pin (3-2-2) is axially extended on the outer end face of the eccentric bushing (3-2). The insertion pin (3-2-2) is eccentrically arranged with respect to the motor shaft. An external thread is provided at the free end of the insertion pin (3-2-2). The insertion pin (3-2-2) is inserted into the insertion pin hole on the wire stripping knife (3-3) and locked by a nut. The eccentric bushing (3-2), the insertion pin (3-2-2), and the wire stripping knife (3-3) form a crank structure. The tool rail (3-4) is arranged on the rotary support unit (2), the tool rail cover (3-5) is arranged on the tool rail (3-4). The wire stripping knife (3-3) is inserted into the tool rail (3-4). The tool shaft (3-6) is inserted into the round hole on the wire stripping knife (3-3), and both ends of the tool shaft (3-6) are inserted into the arc-shaped grooves on the tool rail (3-4). The tool rail (3-4), the tool shaft (3-6), and the crank structure form a crank-grooved pulley cycloidal knife mechanism.

2. The automatic light-controlled swing-knife type live working cable stripping device according to claim 1, wherein The rotary support unit (2) is integrally in a cage-like structure. The rotary support unit (2) includes a connection flange (2-1), a motor plate (2-2), and a connection column (2-3). The connection flange (2-1) has a connection flange opening (2-1-1) corresponding to the size of the bracket opening on the wire stripper base body (1) for facilitating the cable to be clamped. On one side end face of the connection flange (2-1), there are three flat columns (2-4) arranged in a ring, concentric with the connection flange (2-1) and with a fan-shaped cross-section. The head end of the flat column (2-4) is a square small step (2-4-1). A threaded hole is axially opened from the end face on the square small step (2-4-1). The shoulder plane of the square small step (2-4-1) is the positioning surface of the motor plate (2-2). A groove (2-1-2) for clamping the tool rail cover (3-5) is arranged on one side end face of the connection flange (2-1). On one side end face of the motor plate (2-2), three square openings (2-2-1) are respectively connected to the three square small steps (2-4-1). An opening groove (2-2-2) consistent with the opening of the connection flange opening (2-1-1) is opened on the motor plate (2-2). The two ends of the connection column (2-3) are respectively connected to the connection flange (2-1) and the motor plate (2-2).

3. The automatic light-controlled swing-knife type live working cable stripping device according to claim 2, characterized in that, The roots of two of the flat columns (2-4) are designed with steps on one side, forming an L-shaped structure of the flat columns (2-4). The motor plate (2-2) has notches (2-2-3) at positions corresponding to the two L-shaped flat columns (2-4) of the coupling flange (2-1), which respectively correspond to the shapes of the battery and the relay.

4. The automatic light-controlled swing-knife type live working cable stripping device according to claim 2, wherein, The middle of the tool path (3-4) is a square through-hole (3-4-1). The wire stripping knife (3-3) is inserted into the square through-hole (3-4-1) and the knife head of the wire stripping knife (3-3) protrudes. On the hole wall of the square through-hole (3-4-1), two arc-shaped grooves (3-4-2) that cooperate with the tool shaft (3-6) are symmetrically arranged up and down. One of the arc-shaped grooves (3-4-2) close to the tool path cover (3-5) penetrates the hole wall.

5. The automatic light-controlled swing-knife type live working cable stripping device according to claim 2, wherein, The color photoelectric control unit (4) includes an optical fiber head (4-1), a color sensor (4-2), a rechargeable lithium battery (4-3), two DC relays, a start button, a stop button, and a double-pole double-throw 6-pin toggle switch. The optical fiber head (4-1) is movably arranged on the motor plate (2-2) through an optical fiber seat (4-4). The color sensor (4-2), the rechargeable lithium battery (4-3), the two DC relays, the start button, the stop button, and the double-pole double-throw 6-pin toggle switch are all fixed on the motor plate (2-2).

6. The automatic light-controlled swing-knife type live working cable stripping device according to claim 5, characterized in that, The automatic light-controlled swing-knife live working cable stripping device further includes a bump (5) and a pressure-bar microswitch (6) installed on the stripper base (1). The bump (5) is movably arranged on the upper part of the opening and closing clip of the stripper base (1) through a bump seat (7). The pressure-bar microswitch (6) is installed on the lower part of the opening and closing clip of the stripper base (1). The pressure-bar microswitch (6) is electrically connected to the rechargeable lithium battery (4-3). An axial hole is provided on the lower part of the opening and closing clip, and a kidney-shaped groove is opened beside the pressure-bar microswitch (6). The kidney-shaped groove communicates with the axial hole on the lower part of the clip and radially penetrates through the top of the kidney-shaped hole to form a wire routing hole (6-1).

7. The automatic light-controlled swing-knife type live working cable stripping device according to claim 1, characterized in that The motor (3-1) is an ultra-low-speed DC reduction motor.

8. The automatic light-controlled swing-knife type live working cable stripping device according to claim 1, characterized in that, The edge shape of the wire stripping knife (3-3) is U-shaped, and the end of the chip removal groove of the wire stripping knife (3-3) faces upward.

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