Flat cable terminal crimping device and method

Abstract

The invention relates to the technical field of flat cable terminal crimping devices, in particular to a flat cable terminal crimping device and method.The flat cable terminal crimping device comprises a junction box, a wire board is slidably installed at the right end of the inner side of the junction box, a wire groove is formed in the upper end of the wire board, a plurality of clamping rings are fixedly connected to the left end of the wire board, and the clamping rings correspond to clamping grooves in the upper end of the wire board respectively; a plurality of outer pipes are fixedly installed at the inner end of the junction box, the right ends of the outer pipes are fixedly connected with wire fixing rings, an inner pipe is fixedly installed at the left ends of the outer pipes, a stripping device is arranged between the outer pipes and the inner pipe and used for removing insulation skin on the outer surface of a cable, and a wire terminal is arranged at the bottom end of the junction box. According to the invention, the distribution of an electromagnetic field can be influenced by changing the number of turns and gaps of the coil, so that the depth and strength of a heating area are adjusted, efficient heating is realized for insulating layers with different thicknesses, and the insulating layers can be softened without damaging copper wires or conductors in the cable.

Description

Technical Field

[0001] The present invention relates to the technical field of cable terminal crimping devices, and in particular to a cable terminal crimping device and method. Background Art

[0002] In the field of electrical connection, the crimping process of cable terminals is widely used in the connection between cables, wires and terminals. The traditional crimping device of cable terminals is generally composed of a crimping head, a crimping die and a drive device. The working principle is to press the cable terminal and the wire tightly through mechanical force to ensure the electrical performance and mechanical stability of the connection.

[0003] After searching, it was found that the prior art publication number is CN212810817U, which discloses a terminal crimping device for a wiring terminal, including a workbench, a positioning groove is provided on the top of the workbench, a terminal is provided inside the positioning groove, a wiring port is provided on one side of the terminal, a groove is provided on the top of the terminal, a plug-in block is provided inside the groove, a fixing hole is provided on the side surface of the plug-in block, a wiring placement groove is provided inside the terminal, a fixing block is provided on the inner side wall of the wiring placement groove, a movable groove is provided on one side of the fixed block, a spring is provided inside the movable groove, an electrode plate is fixedly connected to the bottom of the wiring placement groove, a support frame is provided on the outer surface of the workbench, a hydraulic cylinder is fixedly connected to the top of the support frame, a hydraulic rod is provided on the top of the hydraulic cylinder, and a pressing block is provided on the top of the hydraulic rod; this scheme can achieve the effect of automatically crimping the terminal and the wiring by arranging the hydraulic cylinder and the pressing block.

[0004] Therefore, based on the above search and in combination with existing technologies, the above solution needs to pre-strip the insulation layer at the end of the cable when in use, otherwise the contact point inside the terminal cannot effectively contact the conductor. Even if the terminal is provided with contact teeth, for thicker cables, due to the different sizes of the contact points, only the metal part of the teeth will contact the copper wire inside the cable, which will increase the contact resistance. In the subsequent use process, the terminal may cause safety hazards due to continuous heating, increasing the risk of spontaneous combustion. For this reason, we propose a terminal crimping device and method. Summary of the invention

[0005] The object of the present invention is to provide a cable terminal crimping device and method to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a terminal crimping device, comprising a junction box, a wire plate is slidably installed on the inner right end of the junction box, a wire groove is opened on the upper end of the wire plate, a plurality of clamping rings are fixedly connected to the left end of the wire plate, and the clamping rings respectively correspond to the clamping rings on the upper end of the wire plate, a plurality of outer tubes are fixedly installed on the inner end of the junction box, the outer tubes respectively correspond to the clamping rings, and the right ends of the outer tubes are all fixedly connected with wire fixing rings, an inner tube is fixedly installed on the left end of the outer tube, an automatic stripping device is arranged between the outer tube and the inner tube for removing the insulating skin on the outer surface of the cable, a wire terminal is arranged at the bottom end of the junction box, and a wire crimping box for crimping is arranged at the inner right end of the junction box.

[0007] As a further solution of the present invention, a plurality of pins are provided at the inner end of the crimping box, and the pins correspond to each fixed card position inside the wire terminal, a pry bar is rotatably installed at the right end of the terminal box, a push plate is fixedly installed on the outer surface of the pry bar, the push plate corresponds to the right end of the pin, and the pin corresponds to the fixed card position inside the wire terminal, which can ensure that the cable terminal is accurately aligned with the card slot during the crimping process, thereby improving the crimping accuracy.

[0008] As a further solution of the present invention, the automatic stripping device includes a heating coil, which is sleeved on the outer surface of the outer tube. An air cylinder is fixedly installed on the upper end of the outer tube, and a movable rod is passed through the left end of the air cylinder. A movable ring is fixedly connected to the end of the movable rod away from the air cylinder, and the movable ring is sleeved on the outer surface of the outer tube.

[0009] As a further solution of the present invention, the heating coil is located between the movable ring and the air cylinder, and the right end of the heating coil is fixedly connected to the outer tube, and the left end is fixedly connected to the movable ring. An airbag is fixedly installed on the inner end of the outer tube, and the airbag is located on the left side of the heating coil, and the airbag and the air cylinder are connected by a connecting tube.

[0010] As a further solution of the present invention, two extrusion arc plates are rotatably installed on the inner end of the outer tube, and the extrusion arc plates are symmetrically distributed front to back, and the side of the extrusion arc plates facing the outer tube is in contact with the outer surface of the airbag. Through symmetrical installation, the two extrusion arc plates can apply pressure evenly, ensuring that the outer tube applies uniform extrusion force to the cable during the crimping process.

[0011] As a further solution of the present invention, a passive ring is rotatably installed at the inner end of the outer tube, and the passive ring is located on the left side of the airbag. A sliding plate is passed through the inner end of the junction box, and the front end of the sliding plate is exposed on the outer surface of the junction box so that an operator can operate it. An active rack is fixedly installed on the upper end of the sliding plate, and a passive gear ring is fixedly installed on the outer surface of the passive ring. The passive gear ring is meshed with the active rack. During the forward and backward movement of the sliding plate, the passive ring can be driven to rotate by the meshing of the active rack and the passive gear ring. Cutting knives for cutting the insulation layer of the cable are slidably installed on both the left and right ends of the inner side of the passive ring.

[0012] As a further solution of the present invention, a movable plate is slidably installed on the inner end of the inner tube, and stripping plates are rotatably installed on both sides of the inner end of the movable plate. The stripping plate rotates toward the center point of the movable plate, and a movable tube is passed through the center of the movable plate. A pushing rod is rotatably installed on the upper side of the right end of the movable plate, and the right bottom end of the pushing rod is fixedly connected to the movable tube by a traction belt, and a shelling tube is fixed to the left end of the movable plate, and the left end of the shelling tube is exposed on the left side of the inner tube.

[0013] As a further solution of the present invention, an unlocking rod is rotatably installed on the inner left end of the inner side of the inner tube, an inner rod is rotatably installed on the inner end of the movable tube, and the left end of the inner rod is inserted into the inner end of the unlocking rod, and a bimetallic spiral sheet is provided at the inner end of the movable tube, the left end of the bimetallic spiral sheet is fixedly connected to the movable tube, and the right end is fixedly connected to the right end of the inner rod, a protrusion is fixedly installed on the outer surface of the unlocking rod, and the protrusion is located on the left side of the inner tube.

[0014] As a further solution of the present invention, a push rod is passed through the upper end of the wire fixing ring, a clamping wheel is rotatably installed on the bottom end of the push rod, and a passive arc plate is rotatably installed on the right bottom end of the outer tube, and a passive wheel is rotatably installed on the end of the passive arc plate away from the outer tube. When the clamping wheel rotates, the cable can be accurately tightened to prevent the cable from loosening or slipping, thereby ensuring that the cable maintains a stable position during the crimping process and improving the crimping quality.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention affects the distribution of the electromagnetic field by changing the number of turns and gap of the coil, thereby adjusting the depth and intensity of the heating area, achieving efficient heating for insulation layers of different thicknesses, and ensuring that the insulation layer can be softened without damaging the copper wire or conductor inside the cable; 2. When the present invention is used, a slight opening is first made on the outer surface of the cable end before stripping the cable end, so that the subsequent stripping process is smoother and the difficulty of detachment caused by the insulation layer being too tight is reduced. At the same time, the stripping length can be accurately controlled to prevent excessive stripping of the insulation layer during the stripping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a cable terminal crimping device; Figure 2 It is a schematic diagram of the structure inside the junction box; Figure 3 is a schematic diagram of the structure of the stripping device; Figure 4 It is a schematic diagram of the structure inside the outer tube and the inner tube; Figure 5 It is a schematic diagram of the enlarged structure inside the outer tube; Figure 6 It is a schematic diagram of the structure on the right side of the passive ring; Figure 7 It is a schematic diagram of the structure enlarged inside the inner tube; Figure 8 It is a schematic diagram of the structure inside the movable tube; Fig. 9 It is a schematic diagram of the structure of the wire fixing ring and the push rod; Fig.10 This is a schematic diagram of the structure inside the wire box.

[0017] In the figure: 1, junction box; 2, wire board; 3, pry bar; 4, wire fixing ring; 5, sliding plate; 31, wire pressing box; 32, top head; 33, wire terminal; 51, discharge port; 101, pressure rod; 102, push rod; 103, snap ring; 104, pressure plate; 105, snap wheel; 201, outer tube; 202, heating coil; 203, inner tube; 204, movable ring; 205, movable rod; 206, air cylinder; 301, air bag; 302, extrusion arc plate; 303, passive arc plate; 304, passive wheel; 305, connecting pipe; 401, passive ring; 402, active rack; 403, extrusion arc rod; 404, cutting knife; 405, abutment column; 501, stripping plate; 502, shell extraction tube; 503, triangular block; 504, movable plate; 505, push rod; 506, traction belt; 507, movable tube; 508, reset spring; 509, unlocking rod; 510, bump; 511, inner rod; 512, bimetallic spiral sheet. DETAILED DESCRIPTION

[0018] 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.

[0019] Example 1: Please refer to Figure 1 - Figure 3 , a terminal crimping device and method, including a junction box 1, a wire plate 2 is slidably installed on the inner right end of the junction box 1, and a wire groove is opened on the upper end of the wire plate 2 so that the cables can be better embedded in the wire groove, so that the cables can be arranged more neatly, and a plurality of clamping rings 103 are fixedly welded on the left end of the wire plate 2, and a pressing plate 104 is rotatably installed on the upper end of the clamping ring 103 through a fixing pin, and the pressing plate 104 and the clamping ring 103 are fixed by a buckle. Then, when the cable passes through the inside of the clamping ring 103, the pressing plate 104 is closed to achieve preliminary fixation of the cable, and the clamping ring 103 corresponds to the clamping groove on the upper end of the wire plate 2 respectively, and a plurality of outer tubes 201 are fixedly installed on the inner end of the junction box 1 by bolts, and the outer tubes 201 correspond to the clamping rings 103 respectively, and the right end of the outer tube 201 is fixedly welded with a wire fixing ring 4; The left end of the outer tube 201 is fixedly welded with the inner tube 203, and an automatic stripping device is arranged between the outer tube 201 and the inner tube 203 for removing the insulating skin on the outer surface of the cable. The bottom end of the junction box 1 is provided with a wire terminal 33, and the inner right end of the junction box 1 is provided with a wire pressing box 31 for pressing the wire. Specifically, a limit block is fixedly installed at the bottom end of the junction box 1 to assist the wire terminal 33 to be accurately clamped at the specified position at the bottom end of the junction box 1.

[0020] like Figure 2 , Fig.10 As shown, a plurality of pins 32 are provided at the inner end of the crimping box 31, and the right ends of the pins 32 are fixedly welded to each other, and the pins 32 correspond to each fixed card position inside the wire terminal 33, and a pry bar 3 is rotatably installed at the right end of the junction box 1, and a push plate is fixedly installed on the outer surface of the pry bar 3, and the push plate corresponds to the right end of the pin 32. The cable is above the wire plate 2, and then the end of the cable is bent 90°. After the end enters the interior of the wire terminal 33, the pry bar 3 rotates and pushes the right side of the pin 32 through the push plate, and the pin 32 is moved to the left by the lever principle, and the fixed card in the wire terminal 33 is squeezed, so that the fixed card clamps the cable end to complete the crimping.

[0021] Example 2: Please refer to Figure 3 - Figure 6, a cable terminal crimping device and method, based on Example 1, the automatic stripping device includes a heating coil 202, the heating coil 202 is sleeved on the outer surface of the outer tube 201, an alternating current is input to the heating coil 202, and the metal copper wire in the cable inserted into the outer tube 201 is heated by the induction heating principle, so that the insulation layer on the outer surface is quickly heated and softened. Specifically, the outer surface of the heating coil 202 is also bound with a spring wire, so that the gaps between adjacent turns of the heating coil 202 can maintain an equal distance during the stretching process. Specifically, an electromagnetic heating controller is provided at the inner end of the junction box 1 for providing an alternating current to the heating coil 202. Its working principle is an existing mature technology and will not be repeated here. The upper end of the outer tube 201 is fixedly installed with a gas cylinder 206 by bolts, and a movable rod 205 is passed through the left end of the gas cylinder 206, and a piston is fixedly installed at the right end of the movable rod 205, and the piston is tightly fitted with the inner wall of the gas cylinder 206. The end of the movable rod 205 away from the gas cylinder 206 is fixedly connected with a movable ring 204 by bolts, and the movable ring 204 is sleeved on the outer surface of the outer tube 201. A rectangular block is fixedly installed on the inner end of the movable ring 204, and a rectangular slide groove is opened on the outer surface of the outer tube 201. The rectangular block is embedded in the inside of the rectangular slide groove, so that the movable ring 204 will not rotate when sliding left and right on the outer surface of the outer tube 201. The heating coil 202 is located between the movable ring 204 and the gas cylinder 206, and the right end of the heating coil 202 is fixedly connected to the outer tube 201, and the left end is fixedly connected to the movable ring 204. When the movable ring 204 slides left and right, by pulling the heating coil 202 and adjusting the gap between its turns, the distribution of the electromagnetic field and the induction heating efficiency are directly affected to adapt to the changes in the thickness of cables of different thicknesses and the thickness of their outer surface insulation layers.

[0022] An airbag 301 is fixedly installed on the inner end of the outer tube 201. The airbag 301 is made of rubber, can withstand high temperatures, and has a certain elasticity. After being deformed by force, it can also return to its original state through its own elastic force. The airbag 301 is located on the left side of the heating coil 202, and the airbag 301 is connected to the air cylinder 206 through a connecting pipe 305. When the airbag 301 is compressed, the accumulated air inside flows into the interior of the air cylinder 206 through the connecting pipe 305, and pushes the movable rod 205 to move to the left through the piston. The inner end of the outer tube 201 is rotatably installed with two extrusion arc plates 302 through a fixing pin. The extrusion arc plates 302 are symmetrically distributed front and back, and the side of the extrusion arc plate 302 facing the outer tube 201 contacts the outer surface of the airbag 301. When the cable passes between the two extrusion arc plates 302, the thickness of the cable itself squeezes the two extrusion arc plates 302 toward the front and back sides to achieve extrusion of the airbag 301.

[0023] like Figure 5 , Figure 6As shown, in order to better strip the insulation layer on the outer surface of the cable, a passive ring 401 is rotatably installed at the inner end of the outer tube 201, and the passive ring 401 is located on the left side of the airbag 301. A sliding plate 5 is penetrated through the inner end of the junction box 1, and the front end of the sliding plate 5 is exposed on the outer surface of the junction box 1, so that the operator can operate it. An active rack 402 is fixedly installed on the upper end of the sliding plate 5, and a passive gear ring is fixedly installed on the outer surface of the passive ring 401. The passive gear ring is meshed with the active rack 402. During the forward and backward movement of the sliding plate 5, the passive ring 401 can be driven to rotate by the meshing of the active rack 402 and the passive gear ring. Cutting knives 404 for cutting the insulation layer of the cable are slidably installed at both left and right ends of the inner side of the passive ring 401. Two extrusion arc rods 403 are rotatably installed at the inner end of the passive ring 401. The ends of the extrusion arc rods 403 that are close to each other are provided with arc grooves. The ends of the cutting knives 404 that are far away from each other are fixedly installed with abutment columns 405, and the outer surface of the abutment columns 405 is in contact with the inner wall of the arc groove. When the extrusion arc rods 403 rotate, the inner wall of the arc groove and the abutment columns 405 are pressed against each other, so that the two cutting knives 404 can move toward the center point of the passive ring 401. Specifically, the cutting knives 404 are connected to the passive ring 401 by spring sheets, so that after moving, they can return to their initial positions under the elastic force of the spring sheets. More specifically, the outer surface of the extruded arc rod 403 is in contact with the airbag 301, and the outer surface of the extruded arc rod 403 is provided with an anti-slip damping pad. Then, when the passive ring 401 rotates, the friction between the extruded arc rod 403 and the airbag 301 causes the extruded arc rod 403 to be in a stationary state. During the rotation of the passive ring 401, the cutting knife 404 is driven to cut an incision in the insulation layer on the outer surface of the cable, making the stripping smoother.

[0024] Example 3: Please refer to Figure 5 , Figure 7 , Figure 8, a terminal crimping device and method for a cable terminal, based on embodiments 1 and 2, a movable plate 504 is slidably installed at the inner end of the inner tube 203, and a rectangular groove is opened on the outer surface of the movable plate 504. A rectangular bar is fixedly installed at the inner end of the inner tube 203, and the rectangular bar is embedded in the rectangular groove on the outer surface of the movable plate 504, so that the movable plate 504 will not rotate during the sliding process. A travel switch is fixedly installed at the inner end of the inner tube 203, and the travel switch is connected to the electromagnetic heating controller through a wire. When the movable plate 504 moves, the electromagnetic heating controller stops supplying power to the heating coil 202. , stripping plates 501 are rotatably installed on both sides of the inner end of the movable plate 504, and the stripping plates 501 rotate toward the center point of the movable plate 504. Specifically, a prismatic anti-skid groove is provided at the inner end of the stripping plate 501 to increase the friction with the insulation layer on the outer surface of the cable, and the stripping plate 501 is made of stainless steel and can be heated by the heating coil 202, and the stripping plate 501 is located on the periphery of the cable, so after the stripping plate 501 is heated, the insulation layer of the cable can be quickly heated to soften it, and then the stripping plate 501 rotates and clamps the outer surface of the insulation layer, so that it can be more convenient to fall off; Two triangular blocks 503 are fixedly installed on the inner wall of the inner tube 203. The triangular blocks 503 correspond to the stripping plate 501 and contact the outer surface of the stripping plate 501. When the stripping plate 501 moves to the left, its outer surface slides with the slope surface of the triangular block 503, so that the right end of the stripping plate 501 moves in a direction close to each other, thereby stripping the insulation layer on the outer surface of the cable; A movable tube 507 is passed through the center of the movable plate 504, and a pushing rod 505 is rotatably installed on the upper right end of the movable plate 504, and the lower right end of the pushing rod 505 is fixedly connected to the movable tube 507 by a traction belt 506. The movable tube 507 is made of metal and has thermal conductivity, and the movable tube 507 is not within the heating range of the heating coil 202, so the movable tube 507 will not be directly heated. A shell stripping tube 502 is welded to the left end of the movable plate 504, and the left end of the shell stripping tube 502 is exposed on the left side of the inner tube 203. The shell stripping tube 502 is semicircular, and the shell stripping tube 502 and the inner tube 203 are connected by a reset spring 508.

[0025] The right end of the movable tube 507 is fixedly installed with an abutment plate, which is located on the right side of the movable plate 504. The inner left end of the inner side of the inner tube 203 is rotatably installed with an unlocking rod 509. The inner end of the movable tube 507 is rotatably installed with an inner rod 511, and the left end of the inner rod 511 is inserted into the inner end of the unlocking rod 509. A prismatic block is fixedly installed on the outer surface of the inner rod 511. The inner end of the unlocking rod 509 is provided with a prismatic groove, and the prismatic block is embedded in the prismatic groove, so that when the inner rod 511 rotates, the unlocking rod 509 is driven to rotate, and the movable tube 507 is unlocked. The inner end of the inner rod 507 is provided with a bimetallic spiral sheet 512, the left end of the bimetallic spiral sheet 512 is fixedly connected to the movable tube 507, and the right end is fixedly connected to the right end of the inner rod 511. The bimetallic spiral sheet 512 is composed of two metals with different thermal expansion coefficients. The specific working principle is an existing mature technology and will not be described in detail here. The inner diameter of the bimetallic spiral sheet 512 is larger than the diameter of the unlocking rod 509, so when the unlocking rod 509 is inserted into the movable tube 507, it will not contact the bimetallic spiral sheet 512. A protrusion 510 is fixedly installed on the outer surface of the unlocking rod 509, and the protrusion 510 is located on the left side of the inner tube 203. A square hole is opened at the left end of the shell-removing tube 502, and the square hole has the same volume as the protrusion 510. When the protrusion 510 does not correspond to the square hole, the shell-removing tube 502 cannot move to the left. A discharge port 51 is opened at the bottom end of the inner tube 203, and the discharge port 51 is located on the left side of the heating coil 202, and the stripped insulation layer is detached from here.

[0026] like Figure 2 , Figure 4 , Fig. 9 As shown, a push rod 102 is passed through the upper end of the wire fixing ring 4, and a clamping wheel 105 is rotatably installed on the bottom end of the push rod 102, and a passive arc plate 303 is rotatably installed on the right bottom end of the outer tube 201 through a rotating pin, and a passive wheel 304 is rotatably installed on the end of the passive arc plate 303 away from the outer tube 201. Specifically, the passive wheel 304 and the clamping wheel 105 are both designed in an hourglass shape, which can better clamp the outer surface of the cable and effectively prevent the cable from slipping. The push rod 102 corresponds to the socket of the wire terminal 33, and a pressure rod 101 is rotatably installed on the upper end of the junction box 1. The bottom end of the pressure rod 101 is rotatably connected to the upper end of the push rod 102, so when the pressure rod 101 is pressed downward, the push rod 102 moves downward synchronously.

[0027] The working principle of the present invention is: When in use, the cable is arranged in the wire groove at the upper end of the wire plate 2, the wire end is inserted into the inside of the wire fixing ring 4 and exposed for a certain length, the wire terminal 33 is placed at the bottom end of the junction box 1, and then the wire plate 2 is moved so that the wire end is inserted into the inside of the outer tube 201. At this time, the end of the cable contacts the outer surface of the abutment plate at the right end of the movable tube 507; At this time, when the cable passes through the outer tube 201, it will first contact the outer surface of the extrusion arc plate 302, and then the extrusion arc plate 302 will rotate and squeeze the airbag 301. At this time, the air pressure inside the air cylinder 206 increases, and the piston pushes the movable rod 205 to move to the left. During the movement of the movable rod 205, the movable ring 204 is driven to move, thereby directly affecting the distribution of the electromagnetic field and the induction heating efficiency, so as to adapt to the changes in the thickness of cables of different thicknesses and the thickness of the insulation layer on their outer surfaces; Then, the sliding plate 5 is pushed to slide forward and backward, and the passive ring 401 is driven to rotate through the active rack 402. When the passive ring 401 rotates, the friction between the extrusion arc rod 403 and the airbag 301 makes the extrusion arc rod 403 in a stationary state. During the rotation of the passive ring 401, the cutting knife 404 is driven to cut an incision in the insulation layer on the outer surface of the cable. At this time, the stripping plate 501 and the copper wire inside the cable begin to be heated. As the temperature rises rapidly, the insulation layer on the outer surface of the cable softens rapidly. At this time, the bimetallic spiral sheet 512 inside the movable tube 507 is twisted by the heat, and drives the inner rod 511 to rotate, and then the unlocking rod 509 also rotates accordingly, so that the protrusion 510 corresponds to the square hole at the left end of the shell stripping tube 502. At this time, the shell stripping tube 502 drags the movable plate 504 to move to the left side under the action of the elastic force of the reset spring 508. At this time, no current passes through the heating coil 202, and then the stripping plate 501 strips off a layer of insulation layer on the outer surface of the end of the cable; As the movable plate 504 continues to move, the left end of the movable tube 507 contacts the inner left end of the inner tube 203, and the movable tube 507 cannot move further. The movable plate 504 continues to move, so that the traction belt 506 pulls the push rod 505 to rotate, and pushes the insulation layer between the two stripping plates 501 out along the discharge port 51, and then presses the pressure rod 101 downward to make the push rod 102 move downward, and send the cable end to the inside of the wire terminal 33 (the cable is bent 90 degrees), and the pry bar 3 is moved, and the push plate starts to push the head 32, and the lever principle is used to move the head 32 to the left, and squeeze the fixing card in the wire terminal 33, so that the fixing card clamps the cable end, and the crimping is completed, and then the wire plate 2 is moved to the right to realize the removal of the wire terminal 33 from the junction box 1; Then, the inner tube 203 is pushed to the initial position, and the protrusion 510 is rotated to rotate the unlocking lever 509, and then the next crimping of the cable is waited.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed in the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cable terminal crimping device, comprising a junction box (1), characterized in that: A wire plate (2) is slidably mounted on the right inner end of the junction box (1), a wire groove is provided on the upper end of the wire plate (2), a plurality of clamping rings (103) are fixedly connected to the left end of the wire plate (2), and the clamping rings (103) respectively correspond to the clamping grooves on the upper end of the wire plate (2), a plurality of outer tubes (201) are fixedly mounted on the inner end of the junction box (1), the outer tubes (201) respectively correspond to the clamping rings (103), and the right ends of the outer tubes (201) are all fixedly connected to a wire fixing ring (4), an inner tube (203) is fixedly mounted on the left end of the outer tube (201), a stripping device is provided between the outer tube (201) and the inner tube (203) for removing the insulation skin on the outer surface of the cable, a wire terminal (33) is provided at the bottom end of the junction box (1), and a wire pressing box (31) for pressing wires is provided at the right inner end of the junction box (1); The stripping device comprises a heating coil (202), the heating coil (202) being sleeved on the outer surface of an outer tube (201), an air cylinder (206) being fixedly mounted on the upper end of the outer tube (201), a movable rod (205) being passed through the left end of the air cylinder (206), a movable ring (204) being fixedly connected to one end of the movable rod (205) away from the air cylinder (206), and the movable ring (204) being sleeved on the outer surface of the outer tube (201).

2. A cable terminal crimping device according to claim 1, characterized in that: The inner end of the crimping box (31) is provided with a plurality of pins (32), and the pins (32) correspond to each fixed clamping position inside the wire terminal (33). A pry bar (3) is rotatably mounted on the right end of the junction box (1), and a push plate is fixedly mounted on the outer surface of the pry bar (3), and the push plate corresponds to the right end of the pins (32).

3. The cable terminal crimping device according to claim 1, characterized in that: The heating coil (202) is located between the movable ring (204) and the air cylinder (206), and the right end of the heating coil (202) is fixedly connected to the outer tube (201), and the left end of the heating coil (202) is fixedly connected to the movable ring (204). An air bag (301) is fixedly installed on the inner end of the outer tube (201), and the air bag (301) is located on the left side of the heating coil (202). The air bag (301) and the air cylinder (206) are connected via a connecting pipe (305).

4. A cable terminal crimping device according to claim 3, characterized in that: Two extrusion arc plates (302) are rotatably mounted on the inner end of the outer tube (201), the extrusion arc plates (302) are symmetrically distributed front to back, and the side of the extrusion arc plates (302) facing the outer tube (201) is in contact with the outer surface of the airbag (301).

5. A cable terminal crimping device according to claim 4, characterized in that: A passive ring (401) is rotatably mounted on the inner end of the outer tube (201), and the passive ring (401) is located on the left side of the airbag (301). A sliding plate (5) is passed through the inner end of the junction box (1), and the front end of the sliding plate (5) is exposed on the outer surface of the junction box (1) so that an operator can operate it.

6. A cable terminal crimping device according to claim 5, characterized in that: An active rack (402) is fixedly mounted on the upper end of the sliding plate (5), and a passive gear ring is fixedly mounted on the outer surface of the passive ring (401). The passive gear ring meshes with the active rack (402). When the sliding plate (5) moves forward and backward, the active rack (402) and the passive gear ring mesh with each other, thereby driving the passive ring (401) to rotate. Cutters (404) for cutting the insulation layer of the cable are slidably mounted on both left and right ends of the inner side of the passive ring (401).

7. The cable terminal crimping device according to claim 1, characterized in that: A movable plate (504) is slidably mounted on the inner end of the inner tube (203), and stripping plates (501) are rotatably mounted on both the front and rear sides of the inner end of the movable plate (504). The stripping plates (501) rotate toward the center point of the movable plate (504). A movable tube (507) is passed through the center of the movable plate (504). A push rod (505) is rotatably mounted on the upper side of the right end of the movable plate (504), and the right bottom end of the push rod (505) is fixedly connected to the movable tube (507) via a traction belt (506). A shell stripping tube (502) is fixed to the left end of the movable plate (504), and the left end of the shell stripping tube (502) is exposed on the left side of the inner tube (203).

8. A cable terminal crimping device according to claim 7, characterized in that: An unlocking lever (509) is rotatably mounted on the inner left end of the inner side of the inner tube (203); an inner rod (511) is rotatably mounted on the inner end of the movable tube (507); the left end of the inner rod (511) is inserted into the inner end of the unlocking lever (509); a bimetallic spiral sheet (512) is provided at the inner end of the movable tube (507); the left end of the bimetallic spiral sheet (512) is fixedly connected to the movable tube (507); and the right end is fixedly connected to the right end of the inner rod (511); a protrusion (510) is fixedly mounted on the outer surface of the unlocking lever (509); and the protrusion (510) is located on the left side of the inner tube (203).

9. The cable terminal crimping device according to claim 1, characterized in that: A push rod (102) is inserted through the upper end of each of the wire fixing rings (4), a clamping wheel (105) is rotatably mounted on the bottom end of each of the push rods (102), and a passive arc plate (303) is rotatably mounted on the right bottom end of the outer tube (201), and a passive wheel (304) is rotatably mounted on the end of the passive arc plate (303) away from the outer tube (201).

10. A method for using a cable terminal crimping device, used for a cable terminal crimping device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: When the cable passes through the outer tube (201), it first contacts the outer surface of the extrusion arc plate (302), and then the extrusion arc plate (302) rotates and squeezes the air bag (301). At this time, the air pressure inside the air cylinder (206) increases, and the movable rod (205) is pushed to move to the left through the piston. During the movement of the movable rod (205), the movable ring (204) is driven to move, thereby directly affecting the distribution of the electromagnetic field and the induction heating efficiency, so as to adapt to the changes in the thickness of the insulation layer of cables of different thicknesses and their outer surfaces; S2: The stripping plate (501) and the copper wire inside the cable are heated. As the temperature rises rapidly, the insulation layer on the outer surface of the cable softens rapidly. At this time, the bimetallic spiral sheet (512) inside the movable tube (507) is twisted by the heat and drives the inner rod (511) to rotate. Then the unlocking rod (509) also rotates, thereby achieving the correspondence between the protrusion (510) and the square hole at the left end of the shell stripping tube (502). At this time, the shell stripping tube (502) drags the movable plate (504) to move to the left side under the action of the elastic force of the return spring (508). At this time, no current passes through the heating coil (202). Then the stripping plate (501) strips off a layer of insulation layer on the outer surface of the end of the cable.

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