A kind of automobile wiring harness head and tail cutting and stripping device

Abstract

The invention relates to the technical field of automobile wire material processing, and discloses a head-to-tail cutting and stripping device for automobile wire harnesses, comprising a body, on which a fixed transmission and circular cutting component, a mobile cutting and skin biting component and a mobile transmission and circular cutting component are sequentially arranged; the mobile cutting and skin biting component comprises a mobile knife seat, a skin biting cutter vertically lifted and lowered on the mobile knife seat, and an opening and closing driving component, the skin biting cutter comprises a knife body and skin biting components located on both sides of the knife body and elastically retractable in the longitudinal direction, and the skin biting component is evenly distributed with bite teeth that can be embedded in the wire skin on one side facing the blade of the knife body; the movement of the mobile cutting and skin biting component and the mobile transmission and circular cutting component is controlled by a linkage driving component, the moving direction of the mobile transmission and circular cutting is consistent with that of the mobile cutting and skin biting component, and the moving stroke is twice that of the mobile cutting and skin biting component, the device simultaneously cuts and strips the head and tail of the wire harness, and the stripping efficiency and the stripping quality are improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile wire material processing, in particular to an automobile wiring harness head-to-tail cutting method. Background Art

[0002] The automotive wiring harness is the main network of the automotive circuit. It is a key component that connects automotive electronic and electrical components and enables them to function. It is used to transmit and exchange power signals and data signals of the electrical system to achieve various functions and requirements of the electrical system. When the automotive wiring harness is connected to the contact components, its ends need to be stripped.

[0003] The traditional method is to use wire strippers to manually strip the wires, that is, first use the clamping device on the wire stripper to fix the wire harness, then use the blade of the pliers to cut into the insulation layer, and then use the mechanical structure of the pliers to strip the insulation layer of the wire to expose the internal wire core. This manual wire stripping method is very inefficient and the stripping length is difficult to control.

[0004] Based on the low efficiency of manual wire stripping, a Chinese patent with announcement number CN212380716U discloses an automatic wire stripping device, including a device body, which includes a conductor mechanism, a stripping mechanism and a cutting assembly. The conductor mechanism has the same structure and includes a feeding assembly and a discharging assembly, both of which are transmitted by a driving wheel; the stripping mechanism can break the wire skin along the axial direction and cut the wire skin, and the cutting assembly is used to cut the wire, wherein the stripping mechanism includes a cutting knife and a cutting knife, the cutting knife is installed on the power output end of the three-jaw chuck, and the cutting knife is installed on the power output end of the clamping lifting cylinder located between the three-jaw chuck and the discharging assembly.

[0005] In the above structure, the cutter is used to radially cut the wire skin. Once the thickness of the wire skin is different, the cutter controlled by the lifting cylinder may have the problem of cutting too deep or too shallow. Once it is too deep, the internal wire core will be damaged; once it is too shallow, the wire skin cannot be stripped off, and once the cutter is worn, it will affect the stripping efficiency and stripping quality. Summary of the invention

[0006] The present invention aims at the disadvantages of the prior art that the axial stripping tool has poor cutting accuracy and further affects the stripping efficiency and stripping quality once worn, and provides an automobile wire harness head-to-tail cutting and stripping device that can achieve stripping without the need for an axial stripping tool.

[0007] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0008] A head-to-tail cutting and stripping device for automobile wiring harnesses comprises a body, on which a fixed transmission and ring cutting component, a movable cutting and stripping component and a movable transmission and ring cutting component are sequentially arranged;

[0009] The fixed transmission and loop cutting assembly comprises a fixed seat fixed on the fuselage, on which are sequentially arranged a wire harness delivery part, a first wire harness fixing part for limiting or releasing the wire harness, and a first wire harness loop cutting part for receiving the wire harness delivered by the wire harness delivery part and positioning and looping the wire skin;

[0010] The movable cutting and biting skin component comprises a movable knife seat guided and slidable on the machine body, a biting skin cutter which is vertically lifted and lowered on the movable knife seat and can be relatively moved closer or farther away, and an opening and closing driving component which drives the biting skin cutter to be relatively moved closer or farther away. The biting skin cutter comprises a knife body located in the middle and biting skin components located on both sides of the knife body and elastically retractable in the longitudinal direction. Biting teeth which can be embedded in the thread skin are evenly distributed on one side of the biting skin component facing the blade of the knife body, and the biting skin component elastically extends toward the blade under normal conditions.

[0011] The mobile transfer ring cutting assembly comprises a mobile seat guided to move on the fuselage, on which a second wire harness ring cutting part having the same structure as the first wire harness ring cutting part, a second wire harness fixing part having the same structure as the first wire harness fixing part, and a wire harness lead-out part having the same structure as the wire harness transfer part are sequentially arranged;

[0012] The movement of the mobile cutting and skin biting component and the mobile conveying and circumcision component is controlled by the linkage driving component. The mobile conveying and circumcision component and the mobile cutting and skin biting component approach or move away from the fixed conveying and circumcision component at the same time, and the moving stroke of the mobile conveying and circumcision component is twice the moving stroke of the mobile cutting and skin biting component.

[0013] By adopting the above scheme, there is no need to set up an axial peeling knife. The existing cutter for cutting the wire harness is replaced by a mobile cutting and biting skin component, and a linkage drive component is set. The skin biting cutter in the mobile cutting and biting skin component includes a knife body and a skin biting component. When the knife bodies bite each other, the wire harness is directly cut off. The skin biting components on both sides of the knife body bite each other on the outer skin on both sides of the cut wire harness. The biting teeth will be embedded in the skin to form a grip. Then, under the drive of the linkage drive component, the mobile transmission ring cutting component moves away from the fixed transmission ring cutting component with a moving stroke twice that of the mobile cutting and biting skin component. When the component is larger than the stripping length, the mobile cutting and skinning component is engaged with the peeled outer skin, while the fixed conveying circular cutting component and the mobile conveying circular cutting component are the stripped wire harness. At this time, the upper and lower skinning cutters move away from each other to allow the stripped outer skin to fall into the waste collection box under the machine. Finally, the mobile conveying circular cutting component approaches the fixed conveying circular cutting component to the initial position with a moving stroke that is twice that of the mobile cutting and skinning component. The above-mentioned stripping device can cut and strip the ends of the wire harness at the same time, which improves efficiency while ensuring the stripping quality.

[0014] Preferably, the linkage drive assembly includes a forward and reverse screw having two threaded segments with opposite thread directions and a first drive motor installed at one end of the forward and reverse screw and used to drive the forward and reverse screw to rotate. The movable tool seat is fixed to the middle part of the forward and reverse screw and the two threaded segments of the forward and reverse screw are respectively threadedly connected to the fixed seat and the movable seat. The fixed seat and the movable seat are provided with bearing seats that slide along the axial direction of the forward and reverse screw and rotate with the end of the forward and reverse screw. The first drive motor is installed on the bearing seat located on the fixed seat.

[0015] By adopting the above scheme, when the motor drives the forward and reverse screws to rotate, the movable seat and the fixed seat synchronously approach or move away from the movable knife seat at the same speed. Since the fixed seat is fixed on the machine body and cannot move, the forward and reverse screws will move relative to the fixed seat. The axial movement of the movable seat relative to the forward and reverse screws is the moving stroke of the forward and reverse screws relative to the fixed seat, that is, the distance the movable seat moves relative to the fixed seat is twice the distance the forward and reverse screws move relative to the fixed seat. When the movable knife seat is fixed to the middle of the forward and reverse screws, the moving stroke of the movable seat can be twice the moving stroke of the movable knife seat.

[0016] Preferably, the opening and closing drive assembly includes a first rack with teeth facing inward and protruding vertically upward on both sides of the lower knife body, a second rack with teeth facing outward and arranged on the outer walls on both sides of the upper knife body, and a first gear that rotates on the movable knife seat and is simultaneously meshed with the corresponding first rack and second rack. A driving lifting cylinder is provided on the movable knife seat to drive the two first racks to rise and fall synchronously to achieve the opening and closing of the upper and lower knife bodies.

[0017] By adopting the above scheme, when the piston rod of the lifting cylinder is extended, the first rack rises and the second rack falls, that is, the upper and lower knife bodies are relatively close to each other and perform a cutting action; when the piston rod of the lifting cylinder is retracted, the first rack falls and the second rack rises, that is, the upper and lower knife bodies are relatively far away from each other and perform an opening action.

[0018] Preferably, the first wire harness ring cutting part includes a turntable rotatably arranged on a fixed seat, a center positioning member axially distributed on the turntable and telescopically arranged along the radial direction of the turntable, and a cutting knife telescopically arranged on the center positioning member and cutting the outer skin of the wire harness when extended and detaching from the outer skin of the wire harness after retracting. A tension spring is arranged on the center positioning member for driving the cutting knife to be in a retracted state under normal conditions. The rotation of the turntable is controlled by a rotation drive component, the contraction of the center positioning member is controlled by a first electromagnetic component, and a synchronous drive component is arranged between the turntable and the fixed seat to drive the cutting knife to extend a preset length while the center positioning member after limited center positioning.

[0019] Preferably, the synchronous drive assembly includes a telescopic block on the turntable and telescopically arranged along the axial direction of the turntable, a resist block located at one end of the telescopic block close to the central positioning member and distributed up and down, and a limiting tooth block. Tooth grooves for the limiting tooth block to engage are longitudinally spaced on the side of the central positioning member facing the telescopic block. A slot for the resist block to be pressed and inserted is provided on the knife body of the cutting knife. A pressing inclined surface is provided at the end of the resist block, and a matching inclined surface that cooperates with the pressing inclined surface and descends as the resist block is pressed is provided at the bottom of the slot.

[0020] By adopting the above scheme, when the center positioning piece is synchronously extended, it can be positioned and clamped on the outer ring wall of the wiring harness. Then, when the telescopic block is extended, the limit tooth block below its end engages with the tooth groove of the center positioning piece to limit the movement of the center positioning piece, so as to ensure that the subsequent cutting knife can accurately cut into the outer skin of the wiring harness when it is extended. In the process of the stop block above its end cooperating with the matching bevel on the slot of the knife body, the knife body continuously extends and cuts into the outer skin of the wiring harness. The rotating drive assembly causes the turntable to rotate a certain angle (rotation angle = 360° ÷ the number of knife setting groups) to achieve circular cutting of the outer skin of the wiring harness.

[0021] Preferably, an adjusting block for adjusting the extension length of the cutting knife is telescopically provided on the lower end surface of the resistance block, and the end of the adjusting block close to the resistance inclined surface is arranged to be an inclined surface consistent with the inclination direction of the resistance inclined surface, and an adjusting rod is rotatably provided on the upper end of the adjusting block, and a sliding groove consistent with the extension and retraction direction of the telescopic block is opened along the axial direction of the outer ring wall of the turntable, and a follower block is embedded in the sliding groove, and a threaded hole matching the threaded section at the upper end of the adjusting rod is penetrated on the follower block, and a driving groove for facilitating the rotation of the adjusting rod is opened on the top of the adjusting rod.

[0022] By adopting the above solution, the operator can adjust the extension amount of the adjustment block by inserting an external tool into the driving slot, thereby ultimately changing the extension distance of the cutting knife.

[0023] Preferably, the extension and retraction of the telescopic block is controlled by a second electromagnetic component, which includes a second elastic member driving the telescopic block to extend horizontally toward the center positioning member and a second electromagnet in a ring shape fixed to a fixed seat at one end of the second elastic member away from the adjustment block. The extension and retraction of the telescopic block is controlled by the power on or off of the second electromagnet.

[0024] With the above solution, the telescopic block rotates with the turntable, and the second electromagnet is fixedly arranged, so that the line can be arranged better without affecting the adsorption of the telescopic block by the second electromagnet.

[0025] Preferably, the rotary drive assembly includes a gear ring concentrically fixed to the outer ring wall of the turntable, a driving gear rotatably disposed on a fixed seat and meshing with the gear ring, and a second driving motor mounted on the fixed seat for driving the driving gear to rotate.

[0026] Preferably, two groups of first wire harness ring cutting parts are arranged on the fixed seat, and the driving gear is meshed with the gear rings of the two groups of first wire harness ring cutting parts at the same time, two groups of second wire harness ring cutting parts are correspondingly arranged on the movable seat, and a driven gear meshed with the gear rings of the two groups of second wire harness ring cutting parts is rotatably arranged on the movable seat, and a telescopic shaft assembly is arranged between the driving gear and the driven gear to ensure that the two are always in coaxial rotation as the movable seat moves, and the telescopic shaft assembly includes a fixed shaft concentrically convexly arranged on the side opposite to the driving gear and the driven gear, and a fixed shaft concentrically convexly arranged on the fixed seat. A slot hole is opened on the side opposite to the fixed axis and an extension rod with two ends plugged into the two slot holes, the extension rod drives the two fixed axis to rotate at the same time and the end of the extension rod is provided with a limit block to limit the extension rod from escaping from the opposite end of the two fixed axis, two groups of leather biting cutters are arranged above and below, the top ends of the four first racks are synchronously connected to a connecting rod, the lifting cylinder is vertically arranged and the end of the piston rod is fixedly connected to the middle part of the connecting rod, the wire harness delivery part, the wire harness lead-out part, the first wire harness fixing part and the second wire harness fixing part are each provided with two groups correspondingly and all move synchronously.

[0027] By adopting the above scheme, the fuselage can simultaneously perform the head and tail cutting and stripping operations of two groups of wire harnesses. Among them, the synchronous head and tail circular cutting of the two groups of wire harnesses only requires a second drive motor to drive, the synchronous cutting of the two groups of wire harnesses only requires a lifting cylinder to drive, and the head and tail stripping of the two groups of wire harnesses only requires a first drive motor to drive.

[0028] Preferably, the wire harness delivery portion includes at least one group of conveying roller groups arranged along the delivery direction of the wire harness, each group of conveying roller groups includes conveying rollers located on both sides of the wire harness and which can synchronously approach or move away from the wire harness, the rotating shafts of the conveying rollers located on one side of the wire harness are synchronously rotated and arranged on a movable plate guided and moved on a fixed seat, and a third driving motor that can drive a conveying roller to rotate is installed on any movable plate, a third rack extending in the relative direction of the two groups of wire harness delivery portions is fixed on the movable plates located on the opposite sides of the two groups of wire harness delivery portions, and the tooth surfaces of the two third racks are arranged opposite to each other, a fourth rack extending in the opposite direction of the two groups of wire harness delivery portions is fixed on the movable plates on the opposite sides of the two groups of wire harness delivery portions, and the tooth surfaces of the fourth rack are arranged opposite to each other, a third gear meshing with the third rack and the fourth rack of each group of wire harness delivery portions is rotatably arranged on the fixed seat, and a fourth gear located between the two groups of wire harness delivery portions and meshing with the two third gears at the same time, and a fourth driving motor that drives the fourth gear to rotate is arranged on the fixed seat.

[0029] By adopting the above scheme, the two groups of wire harnesses are input or output synchronously, and the synchronous input or output of the two groups of wire harnesses is respectively assisted by a third drive motor and a fourth drive motor, wherein the third drive motor is used to drive the wire harnesses to be transported when the conveying pressure roller closes and compacts the wire harnesses, and the fourth drive motor is used to realize the opening and closing of the conveying pressure roller.

[0030] The present invention has significant technical effects due to the adoption of the above technical scheme: there is no need to set an axial peeling knife, the existing cutter for cutting the wire harness is replaced by a mobile cutting and biting skin component, and a linkage drive component is set, the skin biting cutter in the mobile cutting and biting skin component includes a knife body and a skin biting component, the knife bodies directly cut the wire harness when they bite each other, the skin biting components on both sides of the knife body bite each other on the outer skin on both sides of the cut wire harness, the biting teeth will be embedded in the skin to form a grip, and then, under the drive of the linkage drive component, the mobile transmission ring cutting component moves away from the fixed transmission component with a moving stroke of twice the mobile cutting and biting skin component. After the circular cutting component is longer than the stripping length, the mobile cutting and skin biting component is engaged with the peeled outer skin, while the fixed conveying circular cutting component and the mobile conveying circular cutting component are the stripped wire harnesses. At this time, the upper and lower skin biting cutters move away from each other to allow the stripped outer skin to fall into the waste collection box under the machine. Finally, the mobile conveying circular cutting component approaches the fixed conveying circular cutting component to the initial position with a moving stroke that is twice that of the mobile cutting and skin biting component. The above-mentioned stripping device provides a new stripping concept, which can synchronously cut and strip the heads and tails of two wire harnesses at the same time, thereby improving efficiency and ensuring stripping quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is an axonometric view of a head-to-tail cutting and stripping device for an automobile wiring harness according to this embodiment;

[0032] Figure 2 is a top view of a head-to-tail cutting and stripping device for an automobile wiring harness according to this embodiment;

[0033] Figure 3 yes Figure 2 AA cross-sectional view;

[0034] Figure 4 yes Figure 3 A magnified image of A;

[0035] Figure 5 yes Figure 3 A magnified view of B;

[0036] Figure 6 yes Figure 2 A cross-sectional view of BB;

[0037] Figure 7 yes Figure 2 A cross-sectional view of CC;

[0038] Figure 8 yes Figure 7 Enlarged view of C;

[0039] Fig. 9 yes Figure 3 A cross-sectional view of DD;

[0040] Fig.10 yes Fig. 9 The enlarged view of D;

[0041] Fig.11 yes Figure 3 A magnified view of EE;

[0042] Fig.12 yes Fig.11 Enlarged view of E.

[0043] The parts indicated by the numbers in the above drawings are as follows: 1. body; 2. fixed seat; 3. movable knife seat; 4. movable seat; 5. positive and negative screw rods; 6. bearing seat; 7. first drive motor; 8. transmission roller; 9. positioning clamping block; 10. turntable; 1001. slideway; 11. follower block; 12. adjustment rod; 121. drive groove; 122. threaded section; 13. center positioning member; 131. tooth groove; 14. first electromagnet; 15. first elastic member; 16. cutting knife; 161. slotting; 162. matching inclined surface; 17. tension spring; 18. adjustment block; 181. limit tooth block; 182. push block; 1821. push inclined surface; 1822. telescopic block; 1 9. Second elastic member; 20. Second electromagnet; 21. Knife body; 22. Telescopic clamp; 23. Compression spring; 24. Engaging teeth; 25. First rack; 26. Second rack; 27. First gear; 28. Connecting rod; 29. ​​Lifting cylinder; 30. Fixed shaft; 31. Extension rod; 32. Gear ring; 33. Driven gear; 34. Moving plate; 35. Third driving motor; 36. Third rack; 37. Fourth rack; 38. Second gear; 39. Third gear; 40. Fourth driving motor; 41. Second driving motor; 42. Waste collection box; 43. Fifth rack; 44. Sixth rack; 45. Push-pull cylinder; 46. Fourth gear; 47. Driving gear. DETAILED DESCRIPTION

[0044] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0045] A car wiring harness end cutting and stripping device, reference Figure 1-Figure 12 As shown, it includes a fuselage 1, on which a fixed conveying and circumcision component, a movable cutting and biting skin component and a movable conveying and circumcision component are sequentially arranged.

[0046] The fixed conveying and circular cutting assembly includes a fixed seat 2 fixed on the fuselage 1, and the fixed seat 2 is "L"-shaped. The horizontal section of the fixed seat 2 is located on the side of its vertical section away from the movable cutting and biting assembly. A wire harness delivery portion and a first wire harness fixing portion for limiting or loosening the wire harness are sequentially arranged on the horizontal section in the direction close to the vertical section, and a first wire harness circular cutting portion for positioning the wire skin of the wire harness and then performing circular cutting is arranged in the vertical section of the fixed seat 2.

[0047] See Figure 2 , Fig.11 as well as Fig.12 As shown, two groups of wire harness delivery parts are arranged in parallel and at intervals perpendicular to the wire harness transmission direction, each group of wire harness delivery parts includes two groups of transmission roller groups arranged along the transmission direction of the wire harness, each group of transmission roller groups includes transmission pressure rollers 8 located on both sides of the wire harness and can synchronously approach or move away from the wire harness, the rotating shafts of the transmission pressure rollers 8 extend vertically downward to below the horizontal section of the fixed seat 2 and the two rotating shafts located on one side of the wire harness synchronously rotate on the same moving plate 34 below the horizontal section, and a third driving motor 35 that can drive any rotating shaft on the moving plate 34 to rotate is installed on any moving plate 34, and a third rack 36 extending in the relative direction of the two groups of wire harness delivery parts is fixed on the moving plates 34 located on the opposite sides of the two groups of wire harness delivery parts, and the tooth surfaces of the two third racks 36 are arranged oppositely, and the moving plates 34 on the opposite sides of the two groups of wire harness delivery parts are arranged oppositely. A fourth rack 37 extending in opposite directions is fixed to the movable plate 34, and the tooth surfaces of the fourth rack 37 are arranged opposite to each other. A third gear 39 meshing with the third rack 36 and the fourth rack 37 of each group of wire harness delivery parts and a fourth gear 46 located between the two groups of wire harness delivery parts and meshing with the two third gears 39 are rotatably arranged on the fixed seat 2. A fourth drive motor 40 for driving the fourth gear 46 to rotate is arranged on the fixed seat 2. When the fourth drive motor 40 drives the two groups of third racks 36 to be relatively close, the movable plates 34 located on both sides of the wire harness are relatively close, that is, the conveying rollers 8 are pressed tightly on both sides of the wire harness. At this time, the rotation of the third drive motor 35 can drive the wire harness to move for transmission; the setting of the fourth drive motor 40 can adapt to the transmission of wire harnesses of different sizes.

[0048] Two groups of first wiring harness fixing parts are synchronously arranged corresponding to the wiring harness delivery parts, and each group of first wiring harness fixing parts includes positioning clamps 9 located on both sides of the wiring harness and can be synchronously approached or moved away. The two positioning clamps 9 located on the outer sides of the two groups of positioning clamps 9 are fixed with fifth racks 43 extending in the direction of approaching the two, and the two positioning clamps 9 located on the inner sides of the two groups of positioning clamps 9 are fixed with sixth racks 44 extending in the direction of moving away from the two. A fourth gear 46 that is simultaneously meshed with the fifth rack 43 and the sixth rack 44 is rotatably arranged between the two positioning clamps 9 in the same group below the horizontal section of the fixed seat 2, and two groups of push-pull cylinders 45 respectively connected to one end of a fifth rack 43 are fixed below the horizontal section of the fixed seat 2. When the two fifth racks 43 approach synchronously, the two positioning clamps 9 approach synchronously and clamp and position the wiring harness; when the two fifth racks 43 move away synchronously, the two positioning clamps 9 move away synchronously and release the wiring harness.

[0049] The upper end of the fixing seat 2 is recessed with an assembly groove, and two sets of first wiring harness ring cutting parts are installed in the assembly groove accordingly. Figure 2-Figure 4 , Figure 9-10As shown, the first wire harness ring cutting part includes a turntable 10 rotatably arranged on the fixed seat 2, a center positioning member 13 axially distributed on the turntable 10 and telescopically arranged along the radial direction of the turntable 10, and a cutting knife 16 telescopic on the center positioning member 13 and cutting the outer skin of the wire harness when extended and detaching from the outer skin of the wire harness after retracting. A tension spring 17 is arranged on the center positioning member 13 for driving the cutting knife 16 to be in a retracted state under normal conditions. The rotation of the two groups of turntables 10 is synchronously controlled by a rotation drive component, and the contraction of the center positioning member 13 is controlled by a first electromagnetic component. A synchronous drive component is arranged between the turntable 10 and the fixed seat 2. The synchronous drive component can limit the center positioning member 13 after the center is positioned, and at the same time drive the cutting knife 16 to extend a preset length.

[0050] In order to facilitate the replacement of the cutting knife 16 , a fixing block is screwed onto the central positioning member 13 , and two ends of the tension spring 17 are fixedly connected to the lower end of the fixing block and the upper end of the cutting knife 16 , respectively.

[0051] The rotary drive assembly includes a gear ring 32 concentrically fixed on the outer ring wall of the turntable 10, a driving gear 47 rotatably arranged on the fixed base 2 and synchronously meshing with the two sets of gear rings 32, and a second driving motor 41 installed on the fixed base 2 for driving the driving gear 47 to rotate.

[0052] The center positioning member 13 is telescopically arranged on the turntable 10 along a guide groove. The first electromagnetic assembly includes a first electromagnet 14 fixed in the guide groove and a first elastic member 15 fixedly connected to the first electromagnet 14 and the center positioning member 13 at both ends. The first elastic member 15 is a spring.

[0053] The synchronous drive assembly includes a telescopic block 1822 which is telescopically arranged on the turntable 10 along the axial direction of the turntable 10, a stopper 182 which is located at one end of the telescopic block 1822 close to the center positioning member 13 and is distributed up and down, and a limiting tooth block 181. Tooth grooves 131 which can be engaged with the limiting tooth block 181 are longitudinally spaced on the side of the center positioning member 13 facing the telescopic block 1822. A slot 161 which can be pressed and inserted by the stopper 182 is provided on the knife body 21 of the cutting knife 16. A pressing inclined surface 1821 is provided at the end of the stopper 182. A matching inclined surface 162 which cooperates with the pressing inclined surface 1821 and descends as the stopper 182 is pressed is provided at the bottom of the slot 161.

[0054] The extension and retraction of the telescopic block 1822 is controlled by the second electromagnetic component, which includes a second elastic member 19 that drives the telescopic block 1822 to extend horizontally toward the center positioning member 13 and a second electromagnet 20 that is fixed on the fixing seat 2 at one end of the second elastic member 19 away from the adjusting block 18 and is annular. The extension and retraction of the telescopic block 1822 is controlled by the power on or off of the second electromagnet 20. The second elastic member 19 is a spring. The end of the turntable 10 close to the second electromagnet 20 is provided with a slot 161 that exposes the second electromagnet 20. When the first electromagnet 14 loses power, the center positioning member 13 extends and centrally positions the clamping wire harness; then, the second electromagnet 20 loses power, the limit tooth block 181 engages with the tooth groove 131 to limit the movement of the center positioning member 13, and at the same time, the block 182 presses against the cutting knife 16 and drives the cutting knife 16 to cut into the wire skin; then, after the second electromagnet 20 and the first electromagnet 14 are energized in turn, the wiring harness can be released and allowed to pass.

[0055] The lower end surface of the resistance block 182 is telescopically provided with an adjustment block 18 for adjusting the extension length of the cutting knife 16. The end of the adjustment block 18 close to the resistance inclined surface 1821 is set to an inclined surface consistent with the inclination direction of the resistance inclined surface 1821. The upper end of the adjustment block 18 is rotatably provided with an adjustment rod 12. The outer ring wall of the turntable 10 is provided with a slide groove 1001 along its axial direction consistent with the extension and contraction direction of the telescopic block 1822. A follower block 11 is embedded in the slide groove 1001 for sliding. The follower block 11 is penetrated by a threaded hole that cooperates with the threaded section 122 at the upper end of the adjustment rod 12. The top of the adjustment rod 12 is provided with a driving groove 121 for driving the adjustment rod 12 to rotate. The operator can adjust the extension of the adjustment block 18 by inserting an external tool into the driving groove 121. The above structure can realize the circular cutting of wire harnesses with different wire skin thicknesses and increase adaptability.

[0056] Reference Figure 3 and Figure 5 As shown, the mobile cutting and leather biting assembly includes a mobile knife seat 3 guided and slidable on the machine body 1, a leather biting cutter vertically lifted and lowered on the mobile knife seat 3 and capable of being relatively close to or far away from each other, and an opening and closing driving assembly for driving the leather biting cutter to be relatively close to or far away from each other. Two groups of leather biting cutters are correspondingly arranged, with one leather biting cutter arranged at the top and bottom of each group, and each leather biting cutter includes a knife body 21 and a leather biting assembly located on both sides of the knife body 21 and elastically retractable in the longitudinal direction. The leather biting assembly includes a telescopic clamping block 22 guided and moved on the knife seat of the knife body 21, a pressure spring 23 driving the telescopic clamping blocks 22 of the upper and lower leather biting cutters to be relatively close to each other, and a bite tooth 24 located at one end of the telescopic clamping block 22 away from the pressure spring 23 and used for biting and embedding in the thread skin.

[0057] Combination Figure 7As shown, the opening and closing driving assembly includes first racks 25 with teeth facing inwards and vertically protruding upwards on both sides of the lower knife body 21, second racks 26 with teeth facing outwards and arranged on the outer walls of both sides of the upper knife body 21, and a first gear 27 that rotates on the movable knife seat 3 and is simultaneously meshed with the corresponding first racks 25 and second racks 26. The top ends of the four first racks 25 are synchronously connected to a connecting rod 28. A lifting cylinder 29 is vertically installed in the movable knife seat 3, and the piston rod of the lifting cylinder 29 is moved to the movable knife seat 3. The first rack 25 is arranged on the top and the end is fixedly connected with the lower middle part of the connecting rod 28. As the piston rod of the lifting cylinder 29 extends, the first rack 25 rises, the second rack 26 descends, and the upper and lower knife bodies 21 are relatively close to each other to perform a cutting action. At the same time, the bite assembly bites the wire skins on both sides of the cut; when the piston rod of the lifting cylinder 29 retracts, the first rack 25 descends, the second rack 26 rises, and the upper and lower knife bodies 21 are relatively far away from each other to perform an opening action. At the same time, the bite assembly releases the two sections of the peeled wire skins it has bitten.

[0058] The mobile transmission ring cutting assembly includes a mobile seat 4 guided and moved on the fuselage 1. The mobile seat 4 and the fixed seat 2 have the same shape, both of which are "L" shaped. The horizontal section of the mobile seat 4 is located on the side of its vertical section away from the mobile knife seat 3. The vertical section of the mobile seat 4 is installed with a second wire harness ring cutting part that is consistent with the structure and distribution of the first wire harness ring cutting part installed in the vertical section of the fixed seat 2. The structure of the second wire harness ring cutting part is not repeated. Figure 6 and Fig.11 As shown, the two gear discs of the two second wire harness ring cutting parts are synchronously meshed with the driven gear 33 which is arranged concentrically with the driving gear 47. A telescopic shaft assembly is arranged between the driving gear 47 and the driven gear 33 to ensure that the two are always in coaxial rotation as the moving seat 4 moves. The telescopic shaft assembly includes a fixed shaft 30 which is concentrically convexly arranged on the side opposite to the driving gear 47 and the driven gear 33, a slot hole opened on the side opposite to the fixed shaft 30, and an extension rod 31 whose two ends are plugged into the two slot holes. The extension rod 31 drives the two fixed shafts 30 to rotate simultaneously and the end of the extension rod 31 is provided with a limit block which limits it from escaping from the opposite end of the two fixed shafts 30.

[0059] The horizontal section of the movable seat 4 is sequentially provided with a second wire harness fixing portion having the same structure and distribution as the first wire harness fixing portion and a wire harness lead-out portion having the same structure and distribution as the wire harness delivery portion in the direction away from the vertical section thereof. The structures of the second wire harness fixing portion and the wire harness lead-out portion refer to the first wire harness fixing portion and the wire harness delivery portion described above and are not repeated here.

[0060] The movement of the mobile cutting and biting skin component and the mobile conveying and circumcision component is controlled by the linkage drive component, see Figure 6As shown, the mobile transmission ring cutting component and the mobile cutting and biting skin component approach or move away from the fixed transmission ring cutting component at the same time and the moving stroke of the mobile transmission ring cutting component is twice the moving stroke of the mobile cutting and biting skin component. The linkage driving component includes a forward and reverse screw rod 5 with two screw segments with opposite thread directions and a first driving motor 7 installed at one end of the forward and reverse screw rod 5 and used to drive the forward and reverse screw rod 5 to rotate. The mobile knife seat 3 is fixed to the middle of the forward and reverse screw rod 5 and the two screw segments of the forward and reverse screw rod 5 are respectively screwed to the fixed seat 2 and the mobile seat 4. The fixed seat 2 and the mobile seat 4 are provided with a bearing seat 6 that is rotatably matched with the end of the forward and reverse screw rod 5 along the axial guide sliding of the forward and reverse screw rod 5. The first driving motor 7 is installed on the bearing seat 6 located on the fixed seat 2.

[0061] The wiring harness has a certain hardness. Under the support of the wire core, when the movable seat 4 approaches the fixed seat 2 to the maximum stroke, the wiring harness passing through the wiring harness transfer part can pass through the first wiring harness ring cutting part, the movable cutting and biting skin component, the second wiring harness ring cutting part to the wiring harness lead-out part in sequence.

[0062] A waste collection box 42 for receiving the peeled wire skin is provided at the bottom of the fuselage 1. The above-mentioned first electromagnet 14, second electromagnet 20, push-pull cylinder 45, lifting cylinder 29, first drive motor 7, second drive motor 41, third drive motor 35 and fourth drive motor 40 are all connected to the PLC, and the opening and closing and movement of the above-mentioned components are realized by the existing logic programming of the PLC.

[0063] The specific steps are as follows:

[0064] 1. Preparation: The conveying rollers 8 of the wire harness delivery part and the wire harness lead-out part are in an open trend (the distance between the conveying rollers 8 on both sides is greater than the diameter of the wire core). First, manually pass one end of the wire core through the conveying rollers 8 of the wire harness delivery part and then let the conveying rollers 8 press the wire harness;

[0065] 2. Wire feeding: The conveying roller 8 of the wire harness lead-out part is in an opening trend, and the conveying roller 8 of the wire harness lead-out part rotates to start wire feeding. The forward end of the wire harness passes through the first wire harness ring cutting part, the moving cutting skin biting component, and the second wire harness ring cutting part in sequence, and then moves to between the conveying rollers 8 of the wire harness lead-out part. The conveying rollers 8 of the wire harness lead-out part press the wire harness;

[0066] 3. Wire harness limiting: The third drive motor 35 stops moving, and the push-pull cylinder 45 drives the positioning clamps 9 of the first wire harness fixing part and the second wire harness fixing part to move relatively close to each other and clamp and limit the movement of the wire core;

[0067] 4. End-to-end positioning and ring cutting: First, the first electromagnet 14 loses power, and the center positioning member 13 is centrally positioned to clamp the wire core; then, the second electromagnet 20 loses power, and the cutter 16 extends out to cut into the wire skin. The extension distance of the cutter 16 has been adjusted to the skin thickness of the wire core before the operation; further, the second drive motor 41 is started and rotated 90°, and four groups of cutters 16 distributed at 90° cut the wire skin; the forward and reverse rotation of the turntable 10 does not exceed 360°, so as to facilitate the wiring of the first electromagnet 14 and the second electromagnet 20, which can be achieved by repeatedly rotating the second drive motor 41 90° to 360°.

[0068] 5. Cutting the wire core and biting the wire skin at the beginning and end: the knife body 21 and the biting assembly are relatively close to each other synchronously, the knife body 21 cuts the wire bundle, and at the same time, the biting teeth 24 of the biting assembly are embedded in the wire skins on both sides;

[0069] 6. Stripping the wire at the head and tail: First, the first drive motor 7 rotates, the movable knife seat 3 moves a distance greater than the stripping length, and at the same time, the movable seat 4 moves a distance twice that of the movable knife seat 3, and the wire skins at the head and tail are still engaged on the movable knife seat 3; then, the knife body 21 moves away relatively, and the stripped wire skins automatically fall into the waste collection box 42 below; further, the first drive motor 7 reverses, and the movable knife seat 3 and the movable seat 4 are reset to the initial position;

[0070] 7. Wire extraction: The positioning clamps 9 of the first wire harness fixing part and the second wire harness fixing part are relatively separated and the wire core is loosened, and the conveying roller 8 of the wire harness extraction part rotates to extract the stripped wire harness and then relatively open;

[0071] 8. Repeat steps 2 to 7.

[0072] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A head and tail cutting and stripping device for automobile wiring harnesses, comprising a body (1), characterized in that: A fixed transmission and circumcision component, a movable cutting and biting component and a movable transmission and circumcision component are sequentially arranged on the machine body (1); A fixed transmission and ring cutting assembly comprises a fixed seat (2) fixed on a body (1), wherein the fixed seat (2) is provided with a wire harness delivery portion, a first wire harness fixing portion for limiting or releasing the wire harness, and a first wire harness ring cutting portion for receiving the wire harness delivered by the wire harness delivery portion and positioning and ring cutting the wire skin in sequence; A movable cutting and biting skin component comprises a movable knife seat (3) guided and slidably moved on a machine body (1), a biting skin cutter which is vertically lifted and lowered on the movable knife seat (3) and can be relatively moved closer or farther away, and an opening and closing driving component which drives the biting skin cutter to be relatively moved closer or farther away, wherein the biting skin cutter comprises a knife body (21) located in the middle and biting skin components which are located on both sides of the knife body (21) and can be elastically retracted in the longitudinal direction, and biting teeth (24) which can be embedded in the thread skin are evenly distributed on one side of the knife body (21) facing the blade, and the biting skin component elastically extends toward the blade under normal conditions; The mobile transfer ring cutting assembly comprises a mobile seat (4) guided and moved on a body (1), wherein the mobile seat (4) is provided with a second wire harness ring cutting portion having the same structure as the first wire harness ring cutting portion, a second wire harness fixing portion having the same structure as the first wire harness fixing portion, and a wire harness derivation portion having the same structure as the wire harness transfer portion in sequence; The movement of the mobile cutting and skin biting component and the mobile conveying and circumcision component is controlled by the linkage driving component. The mobile conveying and circumcision component and the mobile cutting and skin biting component approach or move away from the fixed conveying and circumcision component at the same time, and the moving stroke of the mobile conveying and circumcision component is twice the moving stroke of the mobile cutting and skin biting component.

2. The automotive wiring harness head and tail cutting and stripping device according to claim 1, characterized in that: The linkage drive assembly comprises a forward and reverse screw rod (5) having two screw segments with opposite thread directions and a first drive motor (7) mounted on one end of the forward and reverse screw rod (5) and used for driving the forward and reverse screw rod (5) to rotate; a movable knife seat (3) is fixed at the middle of the forward and reverse screw rod (5) and the two screw segments of the forward and reverse screw rod (5) are respectively screwed to a fixed seat (2) and a movable seat (4); a bearing seat (6) is provided on the fixed seat (2) and the movable seat (4) along the axial guide sliding of the forward and reverse screw rod (5) and is rotatably matched with the end of the forward and reverse screw rod (5); and the first drive motor (7) is mounted on the bearing seat (6) located on the fixed seat (2).

3. The automotive wiring harness head and tail cutting and stripping device according to claim 1, characterized in that: The opening and closing driving assembly comprises first racks (25) with teeth facing inwards and protruding vertically upwards on both sides of the lower knife body (21), second racks (26) with teeth facing outwards and arranged on the outer walls of both sides of the upper knife body (21), and a first gear (27) rotating on the movable knife seat (3) and meshing with the corresponding first racks (25) and second racks (26). A driving lifting cylinder (29) is arranged on the movable knife seat (3) to drive the two first racks (25) to rise and fall synchronously to realize the opening and closing of the upper and lower knife bodies (21).

4. The head-to-tail cutting and stripping device for automobile wiring harness according to claim 3, characterized in that: The first wire harness ring cutting part comprises a turntable (10) rotatably arranged on a fixed seat (2), a center positioning member (13) axially distributed on the turntable (10) and telescopically arranged along the radial direction of the turntable (10), and a cutting knife (16) telescopically arranged on the center positioning member (13) and cutting the outer skin of the wire harness when extended and detaching from the outer skin of the wire harness after retracting, a tension spring (17) is arranged on the center positioning member (13) for driving the cutting knife (16) to be in a retracted state in a normal state, the rotation of the turntable (10) is controlled by a rotation drive component, the retraction of the center positioning member (13) is controlled by a first electromagnetic component, and a synchronous drive component is arranged between the turntable (10) and the fixed seat (2) to drive the cutting knife (16) to extend to a preset length while the center positioning member (13) is positioned after a limited center.

5. The head-to-tail cutting and stripping device for automobile wiring harness according to claim 4, characterized in that: The synchronous drive assembly comprises a telescopic block (1822) which is telescopically arranged on the turntable (10) along the axial direction of the turntable (10), a stopper (182) which is located at one end of the telescopic block (1822) close to the central positioning member (13) and is distributed up and down, and a limit tooth block (181); tooth grooves (131) which can be engaged by the limit tooth block (181) are longitudinally spaced on the side of the central positioning member (13) facing the telescopic block (1822); a slot (161) which can be pressed and inserted by the stopper (182) is provided on the knife body (21) of the cutting knife (16); a pressing inclined surface (1821) is provided at the end of the stopper (182); and a matching inclined surface (162) which matches the pressing inclined surface (1821) and descends as the stopper (182) is pressed is provided at the bottom of the slot (161).

6. The head-to-tail cutting and stripping device for automobile wiring harness according to claim 5, characterized in that: The lower end surface of the stop block (182) is telescopically provided with an adjustment block (18) for adjusting the extension length of the cutting knife (16); one end of the adjustment block (18) close to the pressing inclined surface (1821) is provided with an inclined surface in the same direction as the pressing inclined surface (1821); an adjustment rod (12) is rotatably provided on the upper end of the adjustment block (18); a slide groove (1001) in the same direction as the extension and contraction direction of the telescopic block (1822) is provided on the outer ring wall of the rotating disk (10) along its axial direction; a follower block (11) is slidably embedded in the slide groove (1001); a threaded hole is penetrated on the follower block (11) and matches with a threaded section (122) at the upper end of the adjustment rod (12); a driving groove (121) is provided on the top of the adjustment rod (12) for driving the adjustment rod (12) to rotate.

7. The head-to-tail cutting and stripping device for automobile wiring harness according to claim 5, characterized in that: The extension and retraction of the telescopic block (1822) is controlled by a second electromagnetic component, which includes a second elastic member (19) for driving the telescopic block (1822) to extend horizontally toward the center positioning member (13) and a second electromagnet (20) in an annular shape fixed to a fixed seat (2) at one end of the second elastic member (19) away from the adjustment block (18). The extension and retraction of the telescopic block (1822) is controlled by the power on or off of the second electromagnet (20).

8. The head-to-tail cutting and stripping device for automobile wiring harness according to claim 4, characterized in that: The rotary drive assembly comprises a gear ring (32) concentrically fixed on the outer ring wall of the rotating disk (10), a driving gear (47) rotatably arranged on the fixing seat (2) and meshing with the gear ring (32), and a second driving motor (41) mounted on the fixing seat (2) for driving the driving gear (47) to rotate.

9. The head-to-tail cutting and stripping device for automobile wiring harness according to claim 8, characterized in that: The fixed seat (2) is provided with two groups of first wire harness ring cutting parts, and the driving gear (47) is meshed with the toothed rings (32) of the two groups of first wire harness ring cutting parts at the same time. The movable seat (4) is correspondingly provided with two groups of second wire harness ring cutting parts, and the movable seat (4) is rotatably provided with a driven gear (33) that is meshed with the toothed rings (32) of the two groups of second wire harness ring cutting parts at the same time. A telescopic shaft assembly is provided between the driving gear (47) and the driven gear (33) to ensure that the two are always in coaxial rotation as the movable seat (4) moves. The telescopic shaft assembly includes a fixed shaft (30) that is coaxially convexly provided on one side opposite to the driving gear (47) and the driven gear (33), and a driven gear (33) that is provided on the movable seat (4). A slotted hole is provided on one side opposite to the fixed shaft (30) and an extension rod (31) with two ends plugged into the two slotted holes. The extension rod (31) drives the two fixed shafts (30) to rotate simultaneously and a limit block is provided at the end of the extension rod (31) to limit the extension rod from coming out of the opposite end of the two fixed shafts (30). Two groups of skin bite cutters are provided at the top and bottom, respectively. The top ends of the four first racks (25) are synchronously connected to a connecting rod (28). The lifting cylinder (29) is vertically arranged and the end of the piston rod is fixedly connected to the middle of the connecting rod (28). Two groups of wire harness delivery parts, wire harness lead-out parts, first wire harness fixing parts and second wire harness fixing parts are correspondingly arranged and move synchronously.

10. The automotive wiring harness head and tail cutting and stripping device according to claim 9, characterized in that: The wire harness delivery section comprises at least one group of conveying rollers arranged along the delivery direction of the wire harness, each group of conveying rollers comprises conveying rollers (8) located on both sides of the wire harness and capable of synchronously approaching or moving away from the wire harness, the rotating shafts of the conveying rollers (8) located on one side of the wire harness are synchronously rotated and arranged on a movable plate (34) guided and moved on a fixed seat (2), and any movable plate (34) is installed with a third driving motor (35) capable of driving a conveying roller (8) to rotate, and the movable plates (34) located on the opposite sides of the two groups of wire harness delivery sections are fixed with third racks (36) extending in the relative direction of the two groups, and the two third racks (36) are arranged on the movable plates (34) located on the opposite sides of the two groups of wire harness delivery sections. The tooth surfaces of the racks (36) are arranged opposite to each other. A fourth rack (37) extending in opposite directions to the two groups of wire harness delivery parts is fixed on the movable plate (34) on the opposite side of the two groups of wire harness delivery parts. The tooth surfaces of the fourth rack (37) are arranged opposite to each other. A third gear (39) meshing with the third rack (36) and the fourth rack (37) of each group of wire harness delivery parts and a fourth gear (46) located between the two groups of wire harness delivery parts and meshing with the two third gears (39) are rotatably arranged on the fixed seat (2). A fourth drive motor (40) for driving the fourth gear (46) to rotate is arranged on the fixed seat (2).

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