Automobile wiring harness tightening device

Abstract

The present invention relates to the technical field of wire harness processing, and discloses an automobile wire harness tightening device, wherein one end of the adjusting slide seat is movably sleeved with a movable sleeve, and the other end is provided with a driving mechanism capable of driving the movable sleeve to rotate, and the movable sleeve is spirally sleeved inside the fixed sleeve, and when the driving mechanism drives the movable sleeve to rotate, the movable sleeve can spirally move inside the fixed sleeve, and the driving mechanism comprises a driven friction disc and an active friction disc. The automobile wire harness tightening device clamps the wire core at the end of the wire harness through a clamping mechanism, and drives the movable sleeve and the clamping mechanism to rotate through the driving mechanism, and realizes the twisting of the wire core through the cooperation of multiple groups of clamping mechanisms. At the same time, since the movable sleeve and the fixed sleeve are spirally connected, when the movable sleeve rotates, it can drive the clamping mechanism to move toward the end of the wire harness, thereby realizing the complete tightening of the wire core at the end of the wire harness, so as to improve the overall bonding performance of the wire core.

Description

Technical Field

[0001] The invention relates to the technical field of wire harness processing, in particular to a device for tightening a wire harness for an automobile. Background Art

[0002] The wire stripping process of a multi-strand wire harness usually includes multiple steps such as wire feeding, wire stripping and cutting. At present, the known machine for stripping automotive wire harnesses is a stripping machine. Generally, a stripping machine only has the function of stripping the outer skin of the wire. Therefore, for a wire harness with multi-strand cores (such as copper wires), after a section of the wire skin is stripped off the end of the wire harness, the overall bonding performance of the exposed core part is low, and it often forks or scatters, which brings trouble to subsequent processing and affects the efficiency of wire processing and production quality. Although there are wire twisting machines specially used for twisting wire ends in the market, the equipment is large in size, complex in structure, and expensive, which is not conducive to popularization. In addition, the end components used for twisting wires on general wire twisting machines are fixed, and the actual twisting diameter cannot be adjusted conveniently and timely. The twisting diameter requirements for multi-strand wires of different specifications (or for different time periods in the same multi-strand wire processing program) cannot be flexibly changed, resulting in inconvenience in use. In addition, when the actual twisting diameter is small and is in close contact with the wire core of the wire harness to be processed, it is easy to cause excessive twisting of the wire core, disturbing the structure and the mechanical strength of the wire core. Summary of the invention

[0003] The object of the present invention is to provide a vehicle wiring harness tightening device to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automobile wiring harness tightening device, comprising a mounting base and an automobile wiring harness, wherein a finger clamp capable of clamping the automobile wiring harness is fixedly mounted on the top of the mounting base, a fixed sleeve is fixedly mounted on the top of the mounting base, and an adjusting slide is slidably mounted on the top of the mounting base, one end of the adjusting slide is movably sleeved with a movable sleeve, and the other end is provided with a driving mechanism capable of driving the movable sleeve to rotate, the movable sleeve is spirally sleeved inside the fixed sleeve, and when the driving mechanism drives the movable sleeve to rotate, the movable sleeve can spirally move inside the fixed sleeve, and the driving mechanism can rotate the movable sleeve. The driving mechanism comprises a driven friction disc and an active friction disc, the driven friction disc is transmission-connected with a movable sleeve, the driven friction disc abuts against the active friction disc, and the active friction disc can drive the driven friction disc to rotate by means of friction force, the movable sleeve is provided with a plurality of clamping mechanisms capable of clamping the automobile wiring harness, an adjusting mechanism is provided on the side of the movable sleeve outside close to the driving mechanism, and the adjusting mechanism can adjust the clamping mechanism according to the diameter of the automobile wiring harness, and the adjusting mechanism can synchronously adjust the friction force between the driven friction disc and the active friction disc when adjusting the clamping mechanism.

[0005] As a further solution of the present invention: the number of the clamping mechanisms is 3-6 groups, and several clamping mechanisms are evenly distributed on the movable sleeve, the clamping mechanism includes a positioning rod, a transmission slide, a clamping claw and a reset spring, the positioning rod is inserted into the movable sleeve, one end of the positioning rod is fixedly connected to the transmission slide located outside the movable sleeve, and the other end is fixedly connected to the clamping claw located inside the movable sleeve.

[0006] As a further solution of the present invention: the return spring is sleeved on the outside of the positioning rod, and the return spring is located outside the movable sleeve, the return spring can continuously apply elastic force to the transmission slide, and the axial cross-section shape of the transmission slide is a hexagon.

[0007] As a further solution of the present invention: the adjustment mechanism includes an electric telescopic rod, an adjustment ring, a slide rail component 1, a transmission pulley, a guide rod, a compression spring and a conductive slip ring. The electric telescopic rod is fixedly installed on the outside of the movable sleeve, the adjustment ring is movably sleeved on the outside of the movable sleeve, and the adjustment ring is fixedly connected to the output shaft of the electric telescopic rod. The inner ring of the adjustment ring is provided with an inclined surface adapted to the transmission slide, and a transmission pulley matching the transmission slide is provided on the inclined surface.

[0008] As a further solution of the present invention: the number of the guide rods is 3-6 groups, and the guide rods are movably installed on the circumferential side of the adjustment ring, the end of the guide rod away from the adjustment ring is threadedly connected to the driven friction disk, the compression spring is movably sleeved on the outside of the guide rod, and the compression spring can continuously apply elastic force to the driven friction disk.

[0009] As a further solution of the present invention: the inner ring of the adjustment ring is provided with a plurality of slide rail components, and the adjustment ring is movably sleeved on the outside of the movable sleeve through the slide rail component, the conductive slip ring is fixedly sleeved on one end of the outside of the movable sleeve close to the finger clamp, and the conductive slip ring is electrically connected to the electric telescopic rod.

[0010] As a further solution of the present invention: the driving mechanism also includes a driven gear, a servo motor and a rotating gear, the active friction disc is rotatably connected to an end of the adjusting slide away from the fixed sleeve, and the active friction disc, the driven friction disc, the movable sleeve and the fixed sleeve are on the same central axis.

[0011] As a further solution of the present invention: the driven gear is fixedly sleeved on the outside of the active friction disk, the servo motor is fixedly installed on the end of the adjusting slide away from the fixed sleeve, the rotating gear is fixedly sleeved on the output shaft of the servo motor, the rotating gear and the driven gear are in the same plane, and the rotating gear and the driven gear are meshed with each other.

[0012] As a further solution of the present invention: The adjusting sliding seat is in a "U" shape as a whole. A second slide rail component for cooperating with the installation base is arranged at the bottom of the adjusting sliding seat, and a support plate for cooperating with the fixed sleeve is fixedly installed at the top of the installation base.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. For this automotive wire harness tightening device, the wire core at the end of the wire harness is clamped by the clamping mechanism, and the driving mechanism drives the movable sleeve and the clamping mechanism to rotate. The twisting of the wire core is achieved through the cooperation of multiple clamping mechanisms. At the same time, since the movable sleeve and the fixed sleeve are in a spiral connection, when the movable sleeve rotates, it can drive the clamping mechanism to move towards the end of the wire harness, thereby achieving the complete tightening of the wire core at the end of the wire harness, improving the overall clamping performance of the wire core, preventing the exposed wire core from splitting or scattering, improving the efficiency of wire processing and the production quality. At the same time, this device is small in size and convenient to place and carry.

[0015] 2. For this automotive wire harness tightening device, the electric telescopic rod drives the adjusting ring to move, thereby pushing the transmission sliding table and the clamping jaws to move, and adjusting the distance between multiple clamping jaws. It can adjust the size of the wire twisting diameter according to actual needs, and can flexibly change according to the wire twisting diameter requirements of wire cores of different specifications. It is convenient to use. In addition, transmission pulleys for cooperating with the transmission sliding table are arranged on the inner ring of the adjusting ring, reducing the friction force between the adjusting ring and the transmission sliding table, and ensuring that the adjusting ring can smoothly push the transmission sliding table to move.

[0016] 3. For this automotive wire harness tightening device, the movable sleeve is friction-driven through the driven friction disc and the driving friction disc. After the wire core at the end of the wire harness is twisted, the resistance of the driven friction disc increases and it stops rotating, which can disconnect the power transmission between the driven friction disc and the driving friction disc, ensuring the safety during the wire twisting process and preventing the wire core from being over-twisted. At the same time, when the electric telescopic rod pushes the adjusting ring to adjust the distance between multiple clamping mechanisms, the telescopic amount of the compression spring can be adjusted synchronously, so that the extrusion force between the driven friction disc and the driving friction disc increases with the increase of the wire harness diameter, enabling the extrusion force between the driven friction disc and the driving friction disc to be adaptively adjusted according to the diameter of the wire harness, reducing the adjustment difficulty. Brief Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the whole combination of the present invention;

[0018] Figure 2 It is a schematic cross-sectional structural diagram of the whole of the present invention;

[0019] Figure 3 It is a schematic structural diagram of the directions of the ends of the fixed sleeve and the movable sleeve in the present invention;

[0020] Figure 4 It is a structural schematic diagram of the connection between the adjustment mechanism and the driving mechanism in the present invention;

[0021] Figure 5 It is a schematic diagram of the structure of the inner ring of the adjusting ring in the present invention;

[0022] Figure 6 It is a structural schematic diagram of the installation position of the clamping mechanism in the present invention;

[0023] Figure 7 It is a structural schematic diagram of the clamping mechanism in the present invention;

[0024] Figure 8 It is a structural schematic diagram of the installation position of the driving mechanism in the present invention;

[0025] Fig. 9 It is a schematic diagram of the structure of the driven friction disc and the active friction disc in the present invention.

[0026] In the figure: 1. Mounting base; 2. Support plate; 3. Fixed sleeve; 4. Adjusting slide; 5. Movable sleeve; 6. Clamping mechanism; 61. Positioning rod; 62. Transmission slide; 63. Clamping claw; 64. Reset spring; 7. Adjusting mechanism; 71. Electric telescopic rod; 72. Adjusting ring; 73. Slide rail component one; 74. Transmission pulley; 75. Guide rod; 76. Compression spring; 77. Conductive slip ring; 8. Driving mechanism; 81. Driven friction disc; 82. Active friction disc; 83. Driven gear; 84. Servo motor; 85. Rotating gear; 9. Automobile wiring harness; 10. Finger clamping claw; 11. Slide rail component two. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figures 1 to 9In an embodiment of the present invention, an automobile wiring harness tightening device comprises a mounting base 1 and an automobile wiring harness 9. A finger clamp 10 capable of clamping the automobile wiring harness 9 is fixedly mounted on the top of the mounting base 1. A fixed sleeve 3 is fixedly mounted on the top of the mounting base 1, and an adjusting slide 4 is slidably mounted. A movable sleeve 5 is movably mounted on one end of the adjusting slide 4, and a driving mechanism 8 capable of driving the movable sleeve 5 to rotate is arranged on the other end. The movable sleeve 5 is spirally mounted inside the fixed sleeve 3. When the driving mechanism 8 drives the movable sleeve 5 to rotate, the movable sleeve 5 can move spirally inside the fixed sleeve 3. Since the movable sleeve 5 and the fixed sleeve 3 are spirally connected, When the movable sleeve 5 rotates, it can drive the clamping mechanism 6 to move toward the end of the wire harness, so as to achieve complete tightening of the wire core at the end of the wire harness to improve the overall bonding performance of the wire core. The driving mechanism 8 includes a driven friction disc 81 and an active friction disc 82. The driven friction disc 81 is connected to the movable sleeve 5 through transmission. The driven friction disc 81 abuts against the active friction disc 82, and the active friction disc 82 can drive the driven friction disc 81 to rotate by friction. The movable sleeve 5 is frictionally transmitted through the driven friction disc 81 and the active friction disc 82. After the wire core at the end of the automobile wire harness 9 is twisted, the resistance of the driven friction disc 81 increases and stops rotating, and the driven friction disc 81 can be disconnected. The power transmission between the disk 81 and the active friction disk 82 prevents the wire core from being excessively twisted. The movable sleeve 5 is provided with a plurality of clamping mechanisms 6 that can clamp the automobile wiring harness 9. The wire core at the end of the automobile wiring harness 9 is clamped by the clamping mechanism 6, and the movable sleeve 5 and the clamping mechanism 6 are driven to rotate by the driving mechanism 8 to achieve the twisting of the wire core. An adjusting mechanism 7 is provided on the side of the movable sleeve 5 close to the driving mechanism 8, and the adjusting mechanism 7 can adjust the clamping mechanism 6 according to the diameter of the automobile wiring harness 9. The adjusting ring 72 is driven to move by the electric telescopic rod 71, thereby pushing the transmission slide 62 and the clamping claw 63 to move, and multiple The spacing between the clamping jaws 63 can be adjusted, and the size of the twisting wire diameter can be adjusted according to actual needs. When the adjusting mechanism 7 adjusts the clamping mechanism 6, the friction force between the driven friction disk 81 and the active friction disk 82 can be adjusted synchronously. When the electric telescopic rod 71 pushes the adjusting ring 72 to adjust the spacing between multiple clamping mechanisms 6, the expansion and contraction amount of the compression spring 76 can be adjusted synchronously, so that the squeezing force between the driven friction disk 81 and the active friction disk 82 increases with the increase of the wire harness diameter, so that the squeezing force between the driven friction disk 81 and the active friction disk 82 can be adaptively adjusted according to the diameter of the wire harness, thereby reducing the difficulty of adjustment.

[0029] As a further implementation scheme of the above invention: the number of clamping mechanisms 6 is 3-6 groups, and several clamping mechanisms 6 are evenly distributed on the movable sleeve 5. The multiple clamping mechanisms 6 cooperate with each other to clamp the wiring harness at the end of the automobile wiring harness 9 in multiple directions, so as to achieve complete tightening of the wire core at the end of the wiring harness to improve the overall bonding performance of the wire core. The clamping mechanism 6 includes a positioning rod 61, a transmission slide 62, a clamping claw 63 and a reset spring 64. The positioning rod 61 is inserted into the movable sleeve 5. One end of the positioning rod 61 is fixedly connected to the transmission slide 62 located outside the movable sleeve 5, and the other end is fixedly connected to the clamping claw 63 located inside the movable sleeve 5. When the adjusting ring 72 moves to squeeze the transmission slide 62, the transmission slide 62 can push the positioning rod 61 to drive the clamping claw 63 to move, and the spacing between the multiple clamping claws 63 can be adjusted, and the size of the twisted wire diameter can be adjusted according to actual needs.

[0030] As a further implementation scheme of the above invention: the return spring 64 is sleeved on the outside of the positioning rod 61, and the return spring 64 is located on the outside of the movable sleeve 5, the return spring 64 can continuously apply elastic force to the transmission slide 62, when the adjustment ring 72 moves toward the side close to the driving mechanism 8 to release the squeezing of the transmission slide 62, the return spring 64 applies elastic force to the transmission slide 62, so as to drive the clamp 63 to reset, and the axial cross-section of the transmission slide 62 is hexagonal, which limits the cross-section of the transmission slide 62 and prevents the positioning rod 61 from axial rotation, thereby ensuring that the transmission slide 62 can accurately cooperate with the adjustment ring 72, and the clamp 63 can stably clamp the automotive wiring harness 9.

[0031] As a further implementation scheme of the above invention: the adjustment mechanism 7 includes an electric telescopic rod 71, an adjustment ring 72, a slide rail component 73, a transmission pulley 74, a guide rod 75, a compression spring 76 and a conductive slip ring 77. The electric telescopic rod 71 is fixedly installed on the outside of the movable sleeve 5, and the adjustment ring 72 is movably sleeved on the outside of the movable sleeve 5, and the adjustment ring 72 is fixedly connected to the output shaft of the electric telescopic rod 71. The electric telescopic rod 71 drives the adjustment ring 72 to move, thereby pushing the transmission slide 62 and the clamping claw 63 to move, and adjusting the spacing between the multiple clamping claws 63. The size of the twisted wire diameter can be adjusted according to actual needs. The inner ring of the adjustment ring 72 is provided with an inclined surface adapted to the transmission slide 62, and a transmission pulley 74 cooperating with the transmission slide 62 is arranged on the inclined surface. The transmission pulley 74 cooperating with the transmission slide 62 is arranged on the inner ring of the adjustment ring 72 to reduce the friction between the adjustment ring 72 and the transmission slide 62, so as to ensure that the adjustment ring 72 can smoothly push the transmission slide 62 to move.

[0032] As a further implementation scheme of the above invention: the number of guide rods 75 is 3-6 groups, and the guide rods 75 are movably installed on the circumference of the adjusting ring 72, and transmission is performed through multiple groups of guide rods 75 to ensure that the driven friction disc 81 can drive the adjusting ring 72, the electric telescopic rod 71 and then drive the movable sleeve 5 to rotate stably. The end of the guide rod 75 away from the adjusting ring 72 is threadedly connected to the driven friction disc 81, and the compression spring 76 is movably sleeved on the outside of the guide rod 75, and the compression spring 76 can continuously apply elastic force to the driven friction disc 81. When the electric telescopic rod 71 pushes the adjusting ring 72 to adjust the spacing between multiple clamping mechanisms 6, the expansion and contraction amount of the compression spring 76 can be adjusted synchronously, so that the extrusion force between the driven friction disc 81 and the active friction disc 82 increases with the increase of the diameter of the wiring harness, so that the extrusion force between the driven friction disc 81 and the active friction disc 82 can be adaptively adjusted according to the diameter of the wiring harness.

[0033] As a further implementation scheme of the above invention: the inner ring of the adjusting ring 72 is provided with a plurality of slide rail components 73, and the adjusting ring 72 is movably sleeved on the outside of the movable sleeve 5 through the slide rail component 73, and the adjusting ring 72 is restricted by the slide rail component 73 to ensure that the adjusting ring 72 can stably move outside the movable sleeve 5, thereby realizing stable adjustment of multiple clamping mechanisms 6, and the conductive slip ring 77 is fixedly sleeved on one end of the outside of the movable sleeve 5 close to the finger clamp 10, and the conductive slip ring 77 is electrically connected to the electric telescopic rod 71. Since the electric telescopic rod 71 is fixedly installed on the movable sleeve 5, and the movable sleeve 5 is a rotating turntable when working, the electric telescopic rod 71 is connected to the wires through the conductive slip ring 77 to ensure that the conductive slip ring 77 is still in a conductive state when the movable sleeve 5 rotates, thereby realizing stable control of the position of the adjusting ring 72.

[0034] As a further implementation scheme of the above invention: the driving mechanism 8 also includes a driven gear 83, a servo motor 84 and a rotating gear 85, the active friction disc 82 is rotatably connected to the end of the adjusting slide 4 away from the fixed sleeve 3, the active friction disc 82, the driven friction disc 81 and the movable sleeve 5 and the fixed sleeve 3 are on the same central axis, ensuring that the active friction disc 82 can drive the driven friction disc 81 to rotate through friction force, and then drive the movable sleeve 5 to stably spirally move inside the fixed sleeve 3, thereby realizing the tightening operation of the wiring harness.

[0035] As a further embodiment of the above invention: The driven gear 83 is fixedly sleeved outside the driving friction disc 82. The servo motor 84 is fixedly installed at one end of the adjusting slide 4 away from the fixed sleeve 3. The rotating gear 85 is fixedly sleeved on the output shaft of the servo motor 84. The rotating gear 85 and the driven gear 83 are in the same plane and the rotating gear 85 meshes with the driven gear 83. The servo motor 84 drives the rotating gear 85, the driven gear 83 and the driving friction disc 82 to rotate. Through friction transmission, the driven friction disc 81 can be driven to rotate, providing power for the movement of the movable sleeve 5 and the clamping mechanism 6, so as to realize the tightening of the wire harness.

[0036] As a further embodiment of the above invention: The adjusting slide 4 is integrally in a "U" shape. A second slide rail component 11 cooperating with the mounting base 1 is arranged at the bottom of the adjusting slide 4. When the movable sleeve 5 moves spirally along the inside of the fixed sleeve 3 driven by the driving mechanism 8, the whole adjusting slide 4 can be synchronously driven to slide, realizing the complete tightening of the end wire harness of the automotive wire harness 9. The adjusting slide 4 is restricted by the second slide rail component 11 to ensure the stability of the adjusting slide 4 during movement. A support plate 2 cooperating with the fixed sleeve 3 is fixedly installed at the top of the mounting base 1.

[0037] During the specific implementation, the end of the automobile wiring harness 9 with the protective skin stripped off is inserted into the movable sleeve 5, and the automobile wiring harness 9 is clamped by the finger clamp 10, and at the same time, the side of the wiring harness close to the protective skin is close to the multiple clamping mechanisms 6, and the adjustment ring 72 is driven to move by the two sets of electric telescopic rods 71, and the transmission slide 62 is squeezed by the transmission pulley 74 on the inner ring inclined surface of the adjustment ring 72 to drive the positioning rod 61 and the clamp 63 to move, and the positions of the multiple clamps 63 are adjusted so that the multiple clamps 63 clamp the wiring harness; when the electric telescopic rod 71 drives the adjustment ring 72 to move, the position change of the adjustment ring 72 affects the expansion of the compression spring 76. When the diameter of the wire core is large, the adjusting ring 72 moves a small distance to the left. At this time, the compression spring 76 has a small expansion and contraction amount, and the compression spring 76 exerts a large elastic force on the driven friction disc 81. When the diameter of the wire core is small, the adjusting ring 72 moves a large distance to the left. At this time, the compression spring 76 has a large expansion and contraction amount, and the compression spring 76 exerts a small elastic force on the driven friction disc 81. The squeezing force between the driven friction disc 81 and the active friction disc 82 increases with the increase of the wire harness diameter; the servo motor 84 drives the rotating gear 85, the driven gear 83 and the active friction disc 82 to rotate, and the active friction disc 8 The driven friction disc 81 is driven to rotate by friction force, and is driven by the guide rod 75, the adjustment ring 72, and the electric telescopic rod 71 to drive the movable sleeve 5 and the clamping mechanism 6 to rotate. The wire core is tightened by the cooperation of multiple clamping mechanisms 6. Since the movable sleeve 5 and the fixed sleeve 3 are spirally connected, the clamping mechanism 6 and the adjustment slide 4 are driven to move to the right as a whole when the movable sleeve 5 rotates, and all the wire cores at the end of the automobile wiring harness 9 are tightened. The movable sleeve 5 is frictionally driven by the driven friction disc 81 and the active friction disc 82. After the wire core at the end of the automobile wiring harness 9 is twisted, the resistance of the driven friction disc 81 increases. When the external force reaches a certain level, the driven friction disc 81 and the active friction disc 82 rotate asynchronously, that is, the active friction disc 82 continues to rotate at the original speed, while the driven friction disc 81 slows down or stops. At this time, the power transmission between the driven friction disc 81 and the active friction disc 82 is disconnected, and the twisting of the wire core is stopped to prevent the wire core from being twisted excessively. After the wire core is tightened, the electric telescopic rod 71 drives the clamping mechanism 6 to reset, the servo motor 84 drives the movable sleeve 5 to reset, and the finger clamp 10 releases the clamping of the automobile wiring harness 9, and the automobile wiring harness 9 is removed; in this way, the wire core at the end of the automobile wiring harness 9 is twisted continuously.

[0038] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An automobile wiring harness tightening device, comprising a mounting base (1) and an automobile wiring harness (9), wherein a finger clamp (10) capable of clamping the automobile wiring harness (9) is fixedly mounted on the top of the mounting base (1), and characterized in that: A fixed sleeve (3) is fixedly mounted on the top of the mounting base (1), and an adjusting slide (4) is slidably mounted thereon; a movable sleeve (5) is movably mounted on one end of the adjusting slide (4), and a driving mechanism (8) capable of driving the movable sleeve (5) to rotate is provided on the other end; the movable sleeve (5) is spirally mounted inside the fixed sleeve (3); when the driving mechanism (8) drives the movable sleeve (5) to rotate, the movable sleeve (5) can move spirally inside the fixed sleeve (3); the driving mechanism (8) comprises a driven friction disc (81) and an active friction disc (82); the driven friction disc (81) and the movable sleeve (5) are transmission-connected to each other. The driven friction disc (81) is against the active friction disc (82), and the active friction disc (82) can drive the driven friction disc (81) to rotate by means of friction force. The movable sleeve (5) is provided with a plurality of clamping mechanisms (6) capable of clamping the automobile wiring harness (9). An adjusting mechanism (7) is provided on the outer side of the movable sleeve (5) close to the driving mechanism (8), and the adjusting mechanism (7) can adjust the clamping mechanism (6) according to the diameter of the automobile wiring harness (9). When the adjusting mechanism (7) adjusts the clamping mechanism (6), the friction force between the driven friction disc (81) and the active friction disc (82) can be adjusted synchronously. The number of the clamping mechanisms (6) is 3-6 groups, and the plurality of clamping mechanisms (6) are evenly distributed on the movable sleeve (5). The clamping mechanisms (6) comprise a positioning rod (61), a transmission slide (62), a clamping claw (63) and a return spring (64). The positioning rod (61) is plugged into the movable sleeve (5), one end of the positioning rod (61) is fixedly connected to the transmission slide (62) located outside the movable sleeve (5), and the other end of the positioning rod (61) is fixedly connected to the clamping claw (63) located inside the movable sleeve (5); The return spring (64) is sleeved on the outside of the positioning rod (61), and the return spring (64) is located outside the movable sleeve (5). The return spring (64) can continuously apply elastic force to the transmission slide (62), and the axial cross-section of the transmission slide (62) is a hexagon. The adjusting mechanism (7) comprises an electric telescopic rod (71), an adjusting ring (72), a slide rail component (73), a transmission pulley (74), a guide rod (75), a compression spring (76) and a conductive slip ring (77); the electric telescopic rod (71) is fixedly mounted on the outside of the movable sleeve (5); the adjusting ring (72) is movably sleeved on the outside of the movable sleeve (5); the adjusting ring (72) is fixedly connected to the output shaft of the electric telescopic rod (71); the inner ring of the adjusting ring (72) is provided with an inclined surface adapted to the transmission slide (62); and a transmission pulley (74) adapted to the transmission slide (62) is provided on the inclined surface; The number of the guide rods (75) is 3 - 6 groups, and the guide rods (75) are movably installed on the circumferential side of the adjusting ring (72). One end of the guide rod (75) far away from the adjusting ring (72) is threadedly connected to the driven friction disc (81). The compression spring (76) is movably sleeved on the outside of the guide rod (75), and the compression spring (76) can continuously apply an elastic force to the driven friction disc (81). A plurality of first slide rail components (73) are arranged on the inner ring of the adjusting ring (72), and the adjusting ring (72) is movably sleeved on the outside of the movable sleeve (5) through the first slide rail components (73). The conductive slip ring (77) is fixedly sleeved on one end of the outside of the movable sleeve (5) close to the finger gripper (10), and the conductive slip ring (77) is electrically connected to the electric telescopic rod (71).

2. The automotive wiring harness tightening device according to claim 1, characterized in that: The driving mechanism (8) further includes a driven gear (83), a servo motor (84) and a rotating gear (85). The driving friction disc (82) is rotatably connected to one end of the adjusting slide base (4) far away from the fixed sleeve (3). The driving friction disc (82), the driven friction disc (81), the movable sleeve (5) and the fixed sleeve (3) are on the same central axis.

3. The automotive wiring harness tightening device according to claim 2, characterized in that: The driven gear (83) is fixedly sleeved on the outside of the driving friction disc (82). The servo motor (84) is fixedly installed on one end of the adjusting slide base (4) far away from the fixed sleeve (3). The rotating gear (85) is fixedly sleeved on the output shaft of the servo motor (84). The rotating gear (85) and the driven gear (83) are in the same plane, and the rotating gear (85) meshes with the driven gear (83).

4. The automotive wiring harness tightening device according to claim 1, characterized in that: The adjusting slide base (4) is in a "U" shape as a whole. A second slide rail component (11) for cooperating with the mounting base (1) is arranged at the bottom of the adjusting slide base (4). A support plate (2) for cooperating with the fixed sleeve (3) is fixedly installed at the top of the mounting base (1).

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