Automobile wire harness head and tail cutting and peeling device

Abstract

The invention relates to the technical field of automobile wire rod processing, and discloses an automobile wire harness head and tail cutting and peeling device which comprises a machine body, and the machine body is sequentially provided with a fixed conveying and girdling assembly, a movable cutting and skin biting assembly and a movable conveying and girdling assembly. The movable cutting and skin biting assembly comprises a movable tool apron, a skin biting cutter vertically ascending and descending on the movable tool apron and an opening and closing driving assembly, the skin biting cutter comprises a cutter body and skin biting assemblies which are located on the two sides of the cutter body and longitudinally and elastically stretch out and draw back, and meshing teeth capable of being embedded into a wire skin are evenly distributed on the sides, facing the blade portion of the cutter body, of the skin biting assemblies; the movement of the movable cutting and skin biting assembly and the movement of the movable conveying and girdling assembly are controlled by the linkage driving assembly, the movement direction of the movable conveying and girdling assembly is consistent with that of the movable cutting and skin biting assembly, the movement stroke of the movable conveying and girdling assembly is two times that of the movable cutting and skin biting assembly, the head and the tail of the wire harness are cut off and peeled at the same time, and the peeling efficiency and the peeling quality are both improved.

Description

Technical Field

[0001] The present 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 network backbone of the automotive circuit and a key component that connects automotive electronic and electrical components and enables them to function. It is used to transmit and exchange power and data signals between electrical systems to achieve their various functions and requirements. When connecting to contact components, the ends of the automotive wiring harness need to be stripped.

[0003] The traditional method is to use wire strippers to manually strip 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 peel off 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 wire mechanism, a stripping mechanism and a cutting assembly. The wire 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 cutter, the cutting knife is installed on the power output end of the three-jaw chuck, and the cutter 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 sheath. Once the thickness of the wire sheath is different, the cutter controlled by the lifting cylinder may have the problem of cutting too deep or too shallow. If it is too deep, the internal wire core will be damaged; if it is too shallow, the wire sheath cannot be stripped off. Once the cutter is worn, the stripping efficiency and quality will be affected. Summary of the Invention

[0006] The present invention addresses the shortcomings of the prior art that axial stripping tools have poor cutting accuracy and further affect the stripping efficiency and quality once worn, and provides an automotive wire harness end-to-end cutting and stripping device that can achieve stripping without the need for axial stripping tools.

[0007] In order to solve the above technical problems, the present invention is solved by the following technical solutions: An automobile wiring harness head and tail cutting and stripping device 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; The fixed conveying and looping assembly includes a fixing seat fixed on the fuselage, on which are sequentially provided a wire harness delivery portion, a first wire harness fixing portion for limiting or releasing the wire harness, and a first wire harness looping portion for receiving the wire harness delivered by the wire harness delivery portion and positioning and looping the wire skin; The movable cutting and biting assembly includes a movable blade holder that slides on the machine body, a biting cutter that rises and falls vertically on the movable blade holder and can move closer or farther away, and an opening and closing drive assembly that drives the biting cutter closer or farther away. The biting cutter includes a blade body located in the middle and biting assemblies located on both sides of the blade body and elastically extendable in the longitudinal direction. The biting assemblies are uniformly distributed on the side facing the blade of the blade body with biting teeth that can be embedded in the thread skin. Under normal conditions, the biting assemblies elastically extend toward the blade. The mobile transfer loop cutting assembly includes a movable base guided and moved on the fuselage, on which a second wire harness loop cutting portion having the same structure as the first wire harness loop cutting portion, a second wire harness fixing portion having the same structure as the first wire harness fixing portion, and a wire harness leading portion having the same structure as the wire harness transfer portion are sequentially provided; The movement of the mobile cutting and biting skin component and the mobile conveying and circumferential cutting component is controlled by the linkage driving component. The mobile conveying and circumferential cutting component and the mobile cutting and biting skin component approach or move away from the fixed conveying and circumferential cutting component at the same time, and the moving stroke of the mobile conveying and circumferential cutting component is twice the moving stroke of the mobile cutting and biting skin component.

[0008] By adopting the above scheme, there is no need to set up an axial peeling knife, and the existing cutter for cutting the wire harness is replaced by a mobile cutting and biting assembly, and a linkage drive assembly is provided. The skin-biting cutter in the mobile cutting and biting assembly includes a knife body and a skin-biting assembly. When the knife bodies bite each other, the wire harness is directly cut off, and the skin-biting assemblies on both sides of the knife body bite each other on the outer skin 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 assembly, the mobile transmission ring cutting assembly moves away from the fixed transmission ring cutting assembly with a moving stroke twice that of the mobile cutting and biting assembly. When the assembly is longer than the stripping length, the peeled outer skin is bitten on the mobile cutting and biting assembly, while the fixed conveying and circular cutting assembly and the mobile conveying and circular cutting assembly 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 and circular cutting assembly moves close to the fixed conveying and circular cutting assembly to the initial position with a moving stroke that is twice that of the mobile cutting and biting assembly. 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.

[0009] Preferably, the linkage drive assembly includes a forward and reverse screw rod having two threaded segments with opposite thread directions and a first drive motor installed at one end of the forward and reverse screw rod and used to drive the forward and reverse screw rod to rotate. The movable tool seat is fixed at the middle part of the forward and reverse screw rod and the two threaded segments of the forward and reverse screw rod 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 rod and rotate with the end of the forward and reverse screw rod. The first drive motor is installed on the bearing seat located on the fixed seat.

[0010] By adopting the above scheme, when the motor drives the forward and reverse screw rods 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 to the machine body and cannot move, the forward and reverse screw rods will move relative to the fixed seat. The axial movement of the movable seat relative to the forward and reverse screw rods is the moving stroke of the forward and reverse screw rods 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 screw rods move relative to the fixed seat. When the movable knife seat is fixed to the middle of the forward and reverse screw rods, the moving stroke of the movable seat can be twice the moving stroke of the movable knife seat.

[0011] 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 simultaneously engages 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 realize the opening and closing of the upper and lower knife bodies.

[0012] With 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.

[0013] Preferably, the first wire harness ring cutting portion 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 telescopic 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 provided on the center positioning member for driving the cutting knife to a retracted state under normal conditions. The rotation of the turntable is controlled by a rotary drive component, and the contraction of the center positioning member is controlled by a first electromagnetic component. A synchronous drive component is provided between the turntable and the fixed seat to drive the cutting knife to extend to a preset length while the center positioning member is limitedly positioned.

[0014] Preferably, the synchronous drive assembly includes a telescopic block that is arranged on the turntable and telescopically along the axial direction of the turntable, a resist block located at one end of the telescopic block close to the center 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 center 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 mating inclined surface is provided at the bottom of the slot that cooperates with the pressing inclined surface and descends as the resist block is pushed forward.

[0015] With the above solution, when the center positioning piece is extended synchronously, it can be positioned and clamped on the outer ring wall of the wiring harness. Then, when the telescopic block is extended, the limiting 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 support 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 cutting knife setting groups) to achieve circular cutting of the outer skin of the wiring harness.

[0016] Preferably, an adjusting block for adjusting the extension length of the cutting knife is telescopically provided on the lower end surface of the resisting block, and the end of the adjusting block close to the resisting inclined surface is set to an inclined surface consistent with the inclination direction of the resisting inclined surface. An adjusting rod is rotatably provided on the upper end of the adjusting block, and a sliding groove consistent with the extension and contraction 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 is penetrated on the follower block to cooperate with the threaded section at the upper end of the adjusting rod, and a driving groove is opened on the top of the adjusting rod to facilitate driving the adjusting rod to rotate.

[0017] With the above solution, the operator can adjust the extension amount of the adjustment block by inserting an external tool into the drive slot, thereby ultimately changing the extension distance of the cutting knife.

[0018] Preferably, the extension and retraction of the telescopic block is controlled by a second electromagnetic assembly, 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 supply or power loss of the second electromagnet.

[0019] With the above solution, the telescopic block rotates with the turntable, and the second electromagnet is fixedly arranged, which allows for better wiring and does not affect the adsorption of the telescopic block by the second electromagnet.

[0020] Preferably, the rotary drive assembly includes a gear ring concentrically fixed on the outer ring wall of the turntable, a drive gear rotatably arranged on a fixed seat and meshing with the gear ring, and a second drive motor mounted on the fixed seat for driving the drive gear to rotate.

[0021] Preferably, two groups of first wiring harness ring cutting parts are provided on the fixed seat, and the driving gear is engaged with the gear rings of the two groups of first wiring harness ring cutting parts at the same time, two groups of second wiring harness ring cutting parts are correspondingly provided on the movable seat, and a driven gear is rotatably provided on the movable seat and is engaged with the gear rings of the two groups of second wiring harness ring cutting parts at the same time, and a telescopic shaft assembly is provided 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 provided on the side opposite to the driving gear and the driven gear, A slot is opened on the side opposite to the fixed axis and an extension rod with both ends plugged into the two slots. 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 its escape from the opposite end of the two fixed axis. Two groups of leather bite cutters are provided 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 wiring harness delivery part, the wiring harness lead-out part, the first wiring harness fixing part and the second wiring harness fixing part are each provided with two groups and all move synchronously.

[0022] By adopting the above scheme, the fuselage can simultaneously perform the head and tail cutting and stripping operations of two sets of wire harnesses. Among them, the synchronous head and tail circular cutting of the two sets of wire harnesses only requires a second drive motor to drive, the synchronous cutting of the two sets of wire harnesses only requires a lifting cylinder to drive, and the head and tail stripping of the two sets of wire harnesses only requires a first drive motor to drive.

[0023] Preferably, the wire harness delivery portion includes at least one group of conveying roller groups arranged along the transmission direction of the wire harness, each group of conveying roller groups includes conveying pressure 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 pressure 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 any movable plate is equipped with a third driving motor that can drive a conveying pressure roller to rotate, and the movable plates located on the opposite sides of the two groups of wire harness delivery portions are fixed with third racks extending in opposite directions between the two, and the tooth surfaces of the two third racks are arranged oppositely, and the movable plates on the opposite sides of the two groups of wire harness delivery portions are fixed with fourth racks extending in opposite directions between the two, and the tooth surfaces of the fourth racks are arranged oppositely, and a third gear meshing with the third rack and the fourth rack of each group of wire harness delivery portions and a fourth gear located between the two groups of wire harness delivery portions and simultaneously meshing with the two third gears are rotatably arranged on the fixed seat, and a fourth driving motor that drives the fourth gear to rotate is arranged on the fixed seat.

[0024] 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.

[0025] The present invention has a significant technical effect due to the adoption of the above technical solution: there is no need to set an axial peeling knife, and the existing cutter for cutting the wire harness is replaced by a mobile cutting and biting skin component, and a linkage drive component is provided. 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, and the skin-biting components on both sides of the knife body bite each other on the outer skin 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 peeled outer skin is bitten on the mobile cutting and biting component, 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 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 moves closer to the fixed conveying circular cutting component to the initial position with a moving stroke that is twice that of the mobile cutting and biting component. The above-mentioned stripping device provides a new stripping concept, which can simultaneously cut and strip the two wire harnesses at the same time, improving efficiency while ensuring the stripping quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is an axonometric view of a head-to-tail cutting and stripping device for an automotive wiring harness according to this embodiment; Figure 2 This is a top view of a head-to-tail cutting and stripping device for an automotive wiring harness according to this embodiment; Figure 3 yes Figure 2 AA cross-sectional view; Figure 4 yes Figure 3 A magnified view of A; Figure 5 yes Figure 3 An enlarged view of B; Figure 6 yes Figure 2 Cross-sectional view of BB; Figure 7 yes Figure 2 Cross-sectional view of CC; Figure 8 yes Figure 7 Enlarged view of C; Figure 9 yes Figure 3 Cross-sectional view of DD; Figure 10 yes Figure 9 The enlarged view of D; Figure 11 yes Figure 3 A magnified view of EE; Figure 12 yes Figure 11Magnified view of E.

[0027] The parts designated by the numbers in the above drawings are as follows: 1. Body; 2. Fixed seat; 3. Moving knife seat; 4. Moving seat; 5. Forward and reverse screw rods; 6. Bearing seat; 7. First drive motor; 8. Conveying roller; 9. Positioning clamp; 10. Turntable; 1001. Slide; 11. Follower block; 12. Adjusting rod; 121. Driving 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. Adjusting block; 181. Limiting tooth block; 182. Retaining block; 1821. Retaining inclined surface; 1822. Telescopic block; 1 9. Second elastic member; 20. Second electromagnet; 21. Knife body; 22. Telescopic clamp; 23. Pressure 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 drive motor; 36. Third rack; 37. Fourth rack; 38. Second gear; 39. Third gear; 40. Fourth drive motor; 41. Second drive motor; 42. Waste collection box; 43. Fifth rack; 44. Sixth rack; 45. Push-pull cylinder; 46. Fourth gear; 47. Drive gear. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0029] A car wire harness cutting and stripping device, Figures 1-12 As shown, it includes a fuselage 1, on which a fixed conveying and circumcision component, a movable cutting and biting component and a movable conveying and circumcision component are sequentially arranged.

[0030] The fixed conveying and circular cutting component includes a fixed base 2 fixed on the fuselage 1, and the fixed base 2 is "L"-shaped. The horizontal section of the fixed base 2 is located on the side of its vertical section away from the movable cutting and biting assembly. A wire harness delivery part and a first wire harness fixing part for limiting or loosening the wire harness are sequentially arranged on the horizontal section in the direction close to the vertical section. A first wire harness circular cutting part for positioning the wire skin of the wire harness and then circular cutting is arranged in the vertical section of the fixed base 2.

[0031] See Figure 2 、 Figure 11 as well as Figure 12As shown, the wire harness delivery part is provided with two groups of parallel intervals perpendicular to the wire harness delivery direction, each wire harness delivery part includes two groups of delivery roller groups arranged along the delivery direction of the wire harness, and each group of delivery roller groups includes delivery pressure rollers 8 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 delivery 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 rotate synchronously on the same movable plate 34 below the horizontal section, and a third driving motor 35 is installed on any movable plate 34 that can drive any rotating shaft on the movable plate 34 to rotate, and a third rack 36 extending in the relative direction of the two is fixed on the movable plates 34 located on the opposite sides of the two wire harness delivery parts, and the tooth surfaces of the two third racks 36 are arranged oppositely, and the movable plates 34 on the opposite sides of the two wire harness delivery parts are arranged oppositely. A fourth rack 37 extending in opposite directions between the two is fixed on 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 provided 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 on both sides of the wire harness are relatively close, that is, the conveying pressure rollers 8 are pressed 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.

[0032] 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 synchronously approach or move away. The two positioning clamps 9 located on the outer sides of the two groups of positioning clamps 9 are fixed with a fifth rack 43 extending in the direction of approach between the two, and the two positioning clamps 9 located on the inner sides of the two groups of positioning clamps 9 are fixed with a sixth rack 44 extending in the direction of moving away from the two. A fourth gear 46 that simultaneously engages with the fifth rack 43 and the sixth rack 44 is rotatably arranged between the two positioning clamps 9 of 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.

[0033] The upper end of the fixing seat 2 is recessed with an assembly groove, in which two sets of first wiring harness ring cutting parts are installed. Figure 2-Figure 4 、 Figure 9-10As shown, the first wire harness ring cutting part includes a turntable 10 rotatably set on the fixed seat 2, a center positioning member 13 axially distributed on the turntable 10 and telescopically set 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 provided 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 provided between the turntable 10 and the fixed seat 2. The synchronous drive component can limit the center positioning member 13 after center positioning, and at the same time drive the cutting knife 16 to extend to a preset length.

[0034] In order to facilitate the replacement of the cutting knife 16, a fixing block is screwed onto the central positioning member 13, and the 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.

[0035] 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.

[0036] 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.

[0037] The synchronous drive assembly includes a telescopic block 1822 that is telescopically arranged on the turntable 10 and along the axial direction of the turntable 10, a stop block 182 located at one end of the telescopic block 1822 close to the center positioning member 13 and distributed up and down, and a limiting tooth block 181. On the side of the center positioning member 13 facing the telescopic block 1822, tooth grooves 131 for the limiting tooth block 181 to engage are longitudinally spaced, and a slot 161 for the stop block 182 to be pressed and inserted is provided on the knife body 21 of the cutting knife 16. A pressing inclined surface 1821 is provided at the end of the stop block 182, and a mating inclined surface 162 is provided at the bottom of the slot 161 that cooperates with the pressing inclined surface 1821 and descends as the stop block 182 is pushed forward.

[0038] The extension and retraction of the telescopic block 1822 is controlled by the second electromagnetic assembly, 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 in a ring shape. 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, and 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 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 through.

[0039] The lower end surface of the resisting block 182 is telescopically provided with an adjusting block 18 for adjusting the extension length of the cutting knife 16. The end of the adjusting block 18 close to the resisting inclined surface 1821 is set to an inclined surface consistent with the inclination direction of the resisting inclined surface 1821. The upper end of the adjusting block 18 is rotatably provided with an adjusting rod 12. The outer ring wall of the turntable 10 is provided with a slide groove 1001 consistent with the extension and contraction direction of the telescopic block 1822 along its axial direction. 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 adjusting rod 12. The top of the adjusting rod 12 is provided with a driving groove 121 for facilitating the rotation of the adjusting rod 12. The operator can adjust the extension of the adjusting 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, thereby increasing adaptability.

[0040] Reference Figure 3 and Figure 5 As shown, the mobile cutting and leather biting assembly includes a movable knife seat 3 guided and slidable on the machine body 1, a leather biting cutter vertically lifted and lowered on the movable knife seat 3 and capable of being relatively close to or away from each other, and an opening and closing drive assembly for driving the leather biting cutters to be relatively close to or away from each other. Two groups of leather biting cutters are correspondingly provided, with one leather biting cutter provided on the upper and lower sides 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 for driving the telescopic clamping blocks 22 of the upper and lower leather biting cutters to be relatively close to each other, and an engaging tooth 24 located at one end of the telescopic clamping block 22 away from the pressure spring 23 and used for engaging with the embedded thread skin.

[0041] Combine Figure 7As shown, the opening and closing drive assembly includes a first rack 25 with a tooth surface facing inward and vertically protruding upward on both sides of the lower knife body 21, a second rack 26 with a tooth surface facing outward 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 simultaneously engages with the corresponding first rack 25 and second rack 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 It is arranged on the top and its end is fixedly connected to the lower middle part of the connecting rod 28. As the piston rod of the lifting cylinder 29 extends, the first rack 25 rises and the second rack 26 falls, and the upper and lower knife bodies 21 are relatively close to each other and perform a cutting action. At the same time, the biting 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 falls and the second rack 26 rises, and the upper and lower knife bodies 21 are relatively far away from each other and perform an opening action. At the same time, the skin-biting assembly releases the two sections of stripped wire skins it has bitten.

[0042] The mobile transmission ring cutting assembly includes a mobile seat 4 guided to move 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 portion that is consistent with the structure and distribution of the first wire harness ring cutting portion installed in the vertical section of the fixed seat 2. The structure of the second wire harness ring cutting portion is not repeated here. Figure 6 and Figure 11 As shown, the two gear discs of the two second wiring harness ring cutting parts are synchronously engaged with the driven gear 33 which is arranged concentrically with the driving gear 47. 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 moving seat 4 moves. The telescopic shaft assembly includes a fixed shaft 30 which is concentrically protruded 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.

[0043] The horizontal section of the movable seat 4 is 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 sequence in the direction away from the vertical section thereof. The structures of the second wire harness fixing portion and the wire harness delivery portion refer to the first wire harness fixing portion and the wire harness delivery portion described above and are not repeated here.

[0044] The movement of the mobile cutting and biting skin component and the mobile conveying and cutting component is controlled by the linkage drive component, see Figure 6As shown, the mobile transmission and circular cutting assembly and the mobile cutting and skin biting assembly approach or move away from the fixed transmission and circular cutting assembly at the same time and the moving stroke of the mobile transmission and circular cutting assembly is twice the moving stroke of the mobile cutting and skin biting assembly. The linkage drive assembly includes a forward and reverse screw rod 5 with two screw segments with opposite thread directions and a first drive 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 movable 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 screwed to the fixed seat 2 and the movable seat 4 respectively. The fixed seat 2 and the movable seat 4 are provided with a bearing seat 6 that rotates 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 drive motor 7 is installed on the bearing seat 6 located on the fixed seat 2.

[0045] 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 delivery part can pass through the first wiring harness loop cutting part, the movable cutting and biting assembly, the second wiring harness loop cutting part to the wiring harness lead-out part in sequence.

[0046] 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.

[0047] The specific steps are as follows: 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; 2. Wire feeding: The conveying roller 8 of the wire harness delivery part is in an open trend. The conveying roller 8 of the wire harness delivery part rotates to start delivering the wire. The forward end of the wire harness passes through the first wire harness ring cutting part, the moving cutting and biting component, the second wire harness ring cutting part, and then moves to the space between the conveying rollers 8 of the wire harness delivery part. The conveying rollers 8 of the wire harness delivery part press the wire harness. 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; 4. End-to-end positioning and ring cutting: First, the first electromagnet 14 is de-energized, and the center positioning member 13 is positioned in the center to clamp the wire core; then, the second electromagnet 20 is de-energized, and the cutter 16 is extended 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 that the wiring of the first electromagnet 14 and the second electromagnet 20 can be achieved by repeatedly rotating the second drive motor 41 90° to 360°.

[0048] 5. Cutting the wire core and biting the wire skin at both ends: The knife body 21 and the biting assembly are synchronously moved closer to each other, and the knife body 21 cuts the wire bundle. At the same time, the biting teeth 24 of the biting assembly are embedded in the wire skin on both sides; 6. Stripping the wire at the head and tail: First, the first drive motor 7 rotates, and the movable knife holder 3 moves a distance greater than the stripping length. At the same time, the movable holder 4 moves twice the distance of the movable knife holder 3, and the wire skins at the head and tail are still engaged on the movable knife holder 3; then, the knife body 21 moves away from each other, 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 holder 3 and the movable holder 4 return to their initial positions; 7. Wire extraction: The positioning clamps 9 of the first and second wire harness fixing parts are relatively separated and the wire cores are loosened. The conveying rollers 8 of the wire harness extraction part rotate to extract the stripped wire harness and then relatively open. 8. Repeat steps 2 to 7.

[0049] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection 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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