Automatic assembling device for automobile wire harness
By using slide rails and a straightening unit in wire harness production, combined with length control and straightening cylinders, the problems of inconsistent wire harness lengths and loose winding were solved, achieving precise control and efficient straightening, thus improving product quality and durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JIANGXI BRILLIANT ELECTRONICS CO LTD
- Filing Date
- 2023-12-22
- Publication Date
- 2026-04-21
AI Technical Summary
In the current wire harness production process, it is difficult to achieve the required length by manually cutting wires, resulting in inconsistent lengths of branch wire harnesses. When wrapping with insulating plastic tape, bending and bulging are easily formed, and it is difficult to fix multiple branch wire harnesses, which affects product quality and efficiency.
The main frame is equipped with a slide rail and a wire straightening and organizing section. Combined with the length control section and the wire straightening and organizing section, the wire harness length is precisely controlled by a lead screw and a clamping block. The straightening cylinder straightens the wire harness, and the compaction rod compacts the tape, thereby achieving the fixation and straightening of multiple wire harnesses.
Precise control of branch harness length prevents loose winding and detachment, improves product quality and efficiency, reduces human intervention, and enhances product durability.
Smart Images
Figure CN121906201A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wire harness integration processing, specifically to an automatic assembly device for automotive wire harnesses. Background Technology
[0002] Automotive wiring harnesses are the core of a vehicle's electrical network; without them, there is no automotive electrical system. A wiring harness is an assembly consisting of copper-plated contact terminals and connectors crimped together with electrical wires and cables, then covered with a plastic-molded insulator or an outer metal shell, and finally bundled together to form a connected circuit. Automotive wiring harnesses have higher requirements than ordinary wiring harnesses in terms of electrical performance, material emissions, and temperature resistance, especially those related to safety, such as those for steering control systems and brakes. These requirements are even more stringent, necessitating strict control over the length of both main and branch wiring harnesses.
[0003] The current wire harness production process is generally as follows: after the technicians in the wire harness factory make the wire harness wiring board according to the wire harness diagram, the workers cut and lay the wires according to the specifications of the wiring board. A main wire harness of a vehicle has multiple branch wire harnesses, just like the trunk and branches of a tree. The cut wire harnesses are wrapped with machine-woven thread or insulating plastic tape. For safety, processing and maintenance convenience, machine-woven thread wrapping has been phased out. Now, adhesive insulating plastic tape is used for wrapping.
[0004] The aforementioned production process suffers from the following unresolved issues: 1. Manually cut wires are unlikely to meet the length requirements of automotive wiring harnesses, potentially leading to length deviations. Furthermore, the lengths of different branch harnesses vary, making it difficult to control the protrusion of each branch harness onto the main harness when wrapping with insulating plastic tape. 2. The wiring harness may bend during the wrapping process, affecting the tape's adhesion and causing bulges on the surface. 3. Existing insulating plastic tape cannot secure multiple branch harnesses, which may interfere with the wrapping process. Manual wrapping is not only inefficient but may also result in loose wrapping, impacting product quality. Summary of the Invention
[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: a main frame is included, two slide rails arranged in a mirror image are fixedly connected above the main frame, a line straightening and organizing part is slidably connected above the two slide rails, and a length control part is provided on the main frame and located in front of the line straightening and organizing part.
[0006] The length control unit includes two symmetrical square slots on the main frame and located in front of the straightening and organizing unit. Multiple sliding blocks are slidably connected in the square slots, and telescopic rods are slidably connected to the sliding blocks. A telescopic rod is also slidably connected on the main frame and located between the two square slots. A clamping block is fixedly connected to the upper side of the telescopic rod. Equidistant adjustment components are provided on the lower side of all telescopic rods. Two stretching cylinders are fixedly connected to the lower side of the main frame and located behind the telescopic rods. The piston rods of the two stretching cylinders are fixedly connected to two sliding blocks located at the leftmost and rightmost ends, respectively. An upward push sleeve is sleeved below each of the two sliding blocks located at the leftmost and rightmost ends. A wedge is fixedly connected on the main frame and located between the two upward push sleeves.
[0007] The front side of the main frame is slidably connected with a number of length control blocks equal to the number of sliding blocks. A lead screw is threaded onto the length control block, and a locking block is rotatably connected to the rear end of the lead screw. The lower end of the locking block is in close contact with the main frame. A connecting rod is fixedly connected to the lower end of the length control block, and the end of the connecting rod away from the length control block is fixedly connected to the sliding block at its corresponding position.
[0008] The upper side of the snap-fit block has a stepped groove, which is wider at the top and narrower at the bottom. A stop block is slidably connected at the junction of the wide and narrow sections of the stepped groove. The stop block passes through the snap-fit block, and the part of the stop block that passes through the snap-fit block is fixedly connected to the snap-fit block by a clamping spring.
[0009] In a preferred embodiment of the present invention, the straightening and tidying section includes an electric slider slidably connected above a slide rail. A track rod is fixedly connected to one side of the two electric sliders that are close to each other. The end of the track rod away from the electric slider is arc-shaped, and the arcs on the two track rods form a ring. A rotating gear ring is rotatably connected inside the ring, and a winding frame is fixedly connected inside the rotating gear ring. A motor frame is fixedly connected below the track rod, and a drive motor is fixedly connected to the motor frame. A drive gear is fixedly mounted on the output shaft of the drive motor, and the drive gear meshes with the rotating gear ring. A compaction ring is fixedly connected to the side of the rotating gear ring. Multiple compaction rods are slidably connected to the compaction ring. A compaction spring is sleeved on the portion of the compaction rod located outside the compaction ring. Both sides of the compaction spring are fixedly connected to the outside of the compaction ring and the compaction rod, respectively. A compaction roller is rotatably connected to the end of the compaction rod located inside the compaction ring.
[0010] As a preferred embodiment of the present invention, two straightening cylinders arranged in a mirror image are fixedly connected to the electric slider and located behind the track rod, and a straightening block is fixedly installed at the end of the piston rod of the straightening cylinder.
[0011] As a preferred embodiment of the present invention, the two straightening blocks are inlaid with freely rolling steel balls on opposite sides to reduce the friction between the straightening blocks and the cable during straightening and to prevent the straightening blocks from scratching the cable.
[0012] In a preferred embodiment of the present invention, a compaction ring is fixedly connected to the rotating gear ring side. Multiple compaction rods are slidably passed through the compaction ring. A compaction spring is sleeved on the part of the compaction rod located outside the compaction ring. The two sides of the compaction spring are fixedly connected to the outside of the compaction ring and the compaction rod, respectively. An inclined plate is fixedly connected to one end of the compaction rod located outside the compaction ring. An expansion ring is fixedly installed on the main frame on the front side of the compaction ring. The expansion ring is concentric with the compaction ring and is used to cooperate with the inclined plate to expand the compaction rod, so that the cable can be passed through the compaction rod when the worker is preparing to do so.
[0013] As a preferred embodiment of the present invention, the clamping block includes a clamping base fixedly installed on the top of the telescopic rod, a clamping top plate hinged to the clamping base, and the clamping base and the clamping top plate are fastened together by bolts passing through them; the lower side of the clamping top plate is provided with multiple wire grooves of different radii for clamping and fixing cables of different sizes.
[0014] As a preferred embodiment of the present invention, the equidistant adjusting member comprises a main hinge rod and a secondary hinge rod arranged intersecting each other. The main hinge rod and the secondary hinge rod are hinged to each other at their intersection positions, and the pin at the hinge point of the main hinge rod and the secondary hinge rod is fixedly installed below the telescopic rod. The spacing between all sliding blocks is controlled by extending and retracting the tension cylinder.
[0015] As a preferred embodiment of the present invention, the lower end of the straightening block has a comb-like structure to prevent the wire harness from falling below the straightening block.
[0016] The beneficial effects of the present invention are as follows: First, the length control unit of the present invention can accurately control the length of each branch wire harness through the lead screw and the snap-fit block. The length of the branch wire harness can be determined before the insulating plastic tape is wrapped. Compared with manual determination, it is more accurate and effectively ensures the quality of the finished product.
[0017] Second, the straightening and straightening section of this invention can straighten the wire bundle to be wound by a straightening cylinder, smoothing out the bulges formed on the surface of the wire bundle and effectively preventing them from affecting the adhesion of the insulating plastic tape.
[0018] Third, the straightening and length control section and the length control section of the present invention work together to fix and straighten multiple branch wire bundles, preventing the branch wire bundles from interfering with the winding process in the later stage, and further improving efficiency compared with manual winding.
[0019] Fourth, the cord straightening and organizing part of this invention can compact the wound insulating plastic tape with a compacting rod, which can effectively prevent the insulating plastic tape from falling off due to loose winding, and further improve the durability of the product. Attached Figure Description
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0021] Figure 1 This is a schematic diagram of the structure of the present invention.
[0022] Figure 2 yes Figure 1 Enlarged view of point I.
[0023] Figure 3 This is a schematic diagram of the length control unit of the present invention.
[0024] Figure 4 This is a schematic diagram of the length control unit of the present invention from another perspective.
[0025] Figure 5 This is a schematic diagram of the structure of the snap-fit block of the present invention.
[0026] Figure 6 This is a schematic diagram of the structure of the sliding block, the upper push sleeve, the clamping block, and the telescopic rod of the present invention.
[0027] Figure 7 This is a schematic diagram of the structure of the straightening and tidying part of the present invention.
[0028] Figure 8 yes Figure 7 Enlarged view of section II.
[0029] Figure 9 This is a schematic diagram of the straightening and tidying part of the present invention from another perspective.
[0030] In the diagram: 1. Main frame; 11. Slide rail; 12. Wedge block; 13. Square groove; 14. Expansion ring; 2. Thread straightening and tidying section; 21. Electric slider; 22. Track rod; 221. Motor frame; 23. Rotating gear ring; 231. Winding frame; 232. Compacting ring; 233. Compacting rod; 234. Compacting spring; 235. Compacting roller; 236. Inclined plate; 24. Straightening cylinder; 241. Straightening block; 25. Drive motor; 251 1. Drive gear; 3. Length control unit; 31. Telescopic rod; 32. Sliding block; 321. Upward push sleeve; 33. Equidistant adjustment component; 331. Main hinge rod; 332. Secondary hinge rod; 34. Tension cylinder; 35. Length control block; 351. Lead screw; 352. Connecting rod; 36. Snap-fit block; 361. Stepped groove; 362. Stop block; 363. Clamping spring; 37. Clamping block; 371. Clamping base; 372. Clamping top plate. Detailed Implementation
[0031] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Where specific techniques or conditions are not specified in the embodiments, they shall be performed in accordance with the techniques or conditions described in the literature in the art or in accordance with the product manual.
[0032] See Figure 1 An automatic assembly device for automotive wiring harnesses includes a main frame 1, with two mirror-arranged slide rails 11 fixedly connected above the main frame 1, and a wire straightening and organizing part 2 slidably connected above the two slide rails 11. A length control part 3 is provided on the main frame 1 and located in front of the wire straightening and organizing part 2.
[0033] The length control unit 3 of this invention can precisely control the length of each branch wire harness through the lead screw 351 and the clamping block 36. The length of the branch wire harness can be determined before the insulating plastic tape is wrapped, which is more accurate than manual determination and effectively ensures the quality of the finished product. The straightening and tidying unit 2 of this invention can straighten the wire harness to be wrapped through the straightening cylinder 24, smoothing out the bulges formed on the surface of the wire harness and effectively preventing them from affecting the adhesion of the insulating plastic tape. The straightening and tidying unit 2 and the length control unit 3 of this invention can fix and straighten multiple branch wire harnesses to prevent the branch wire harnesses from interfering with the wrapping process in the later stage, and further improve efficiency compared with manual wrapping. The straightening and tidying unit 2 of this invention can compact the wrapped insulating plastic tape through the compaction rod 233, which can effectively prevent the insulating plastic tape from falling off due to loose wrapping and further improve the durability of the product.
[0034] See Figures 1-4 The length control unit 3 includes two symmetrical square grooves 13 on the main frame 1 and located in front of the straightening and organizing unit 2. Multiple sliding blocks 32 are slidably connected in the square grooves 13. Telescopic rods 31 are slidably connected to the sliding blocks 32. A telescopic rod 31 is also slidably connected on the main frame 1 and located between the two square grooves 13. A clamping block 37 is fixedly connected to the upper side of the telescopic rod 31. Equidistant adjustment parts 33 are provided on the lower side of all telescopic rods 31. Two stretching cylinders 34 arranged in a left-right mirror pattern are fixedly connected to the lower side of the main frame 1 and located behind the telescopic rods 31. The piston rods of the two stretching cylinders 34 are fixedly connected to the two sliding blocks 32 located at the leftmost and rightmost ends, respectively. An upward push sleeve 321 is sleeved below the two sliding blocks 32 located at the leftmost and rightmost ends. A wedge block 12 is fixedly connected on the main frame 1 and located between the two upward push sleeves 321.
[0035] See Figures 1-4 The front side of the main frame 1 is slidably connected with length control blocks 35, the number of which is equal to the number of sliding blocks 32. A lead screw 351 is threaded onto the length control block 35. A locking block 36 is rotatably connected to the rear end of the lead screw 351. The lower end of the locking block 36 is in close contact with the main frame 1. A connecting rod 352 is fixedly connected to the lower end of the length control block 35. The end of the connecting rod 352 away from the length control block 35 is fixedly connected to the sliding block 32 at its corresponding position.
[0036] See Figure 5The upper side of the snap-fit block 36 is provided with a stepped groove 361, which is wider at the top and narrower at the bottom. A stop block 362 is slidably connected at the junction of the wide and narrow parts of the stepped groove 361. The stop block 362 passes through the snap-fit block 36, and the part of it that passes through the snap-fit block 36 is fixedly connected to the snap-fit block 36 by a clamping spring 363.
[0037] See Figure 6 The clamping block 37 includes a clamping base 371 fixedly installed on the top of the telescopic rod 31. A clamping top plate 372 is hinged on the clamping base 371. The clamping base 371 and the clamping top plate 372 are fastened together by bolts passing through them. The lower side of the clamping top plate 372 is provided with multiple wire grooves of different radii for clamping and fixing cables of different sizes.
[0038] See Figure 4 The equidistant adjusting member 33 comprises a main hinge rod 331 and a secondary hinge rod 332 arranged intersecting each other. The main hinge rod 331 and the secondary hinge rod 332 are hinged to each other at their intersection positions, and the pin at the intersection position of the main hinge rod 331 and the secondary hinge rod 332 is fixedly installed below the telescopic rod 31. The interval distance between all sliding blocks 32 is controlled by the extension and retraction of the tension cylinder 34.
[0039] The length control unit 3 of this invention can precisely control the length of each branch wire harness through the lead screw 351 and the snap-fit block 36. The length of the branch wire harness can be determined before the insulating plastic tape is wrapped, which is more accurate than manual determination and effectively ensures the quality of the finished product.
[0040] Specifically, before processing begins, the wire harness must first be connected to a dedicated wire harness connector. Then, the end with the wire harness connector is passed through the lower side of the stepped groove 361, and then the wire harness connector is secured to the side of the clamping block 36 away from the holding block 37 by the stop block 362. It should be noted that the width of the lower side of the stepped groove 361 is slightly smaller than the width of the wire harness connector. After the cable passes through the stepped groove 361 from front to back and then through the clamping block 37, the cable is then passed through the rear cable straightening and organizing part 2, and then through the lead screw 3. 51. Precisely adjust the length of the wire harness. After adjustment, fix and lock the clamping block 37. After locking the clamping block 37, the tension cylinder 34 begins to retract. Through the equidistant adjustment component 33, all the telescopic rods 31 move towards the center. At the same time, the snap-fit block 36 moves towards the center in sync with the telescopic rods 31. During the movement, because the upper push sleeve 321 contacts the wedge block 12, the upper push sleeve 321 drives its corresponding telescopic rod 31 to move upward. The remaining telescopic rods 31 move upward through the equidistant adjustment component 33.
[0041] All telescopic rods 31 move upward, causing the branch wire harness on clamping block 37 to move upward. As the branch wire harness moves upward, the cable located in the snap-fit block 36 is pulled out between the two stops 362, effectively preventing the wire harness connector from being damaged when the telescopic rods 31 move upward.
[0042] See Figures 7-9 The straightening and tidying section 2 includes an electric slider 21 slidably connected above the slide rail 11. A track rod 22 is fixedly connected to one side of the two electric sliders 21 that are close to each other. The end of the track rod 22 away from the electric slider 21 is arc-shaped. The arcs on the two track rods 22 form a ring. A rotating gear ring 23 is rotatably connected inside the ring. A winding frame 231 is fixedly connected inside the rotating gear ring 23. A motor frame 221 is fixedly connected below the track rod 22. A drive motor 25 is fixedly connected to the motor frame 221. A drive gear 251 is fixedly mounted on the output shaft of the drive motor 25. The drive gear 251 meshes with the rotating gear ring 23. A compaction ring 232 is fixedly connected to the front side of the rotating gear ring 23. Multiple compaction rods 233 are slidably inserted on the upper part of the compaction ring 232. The portion of the compaction rod 233 located outside the compaction ring 232 is fitted with a compaction spring 234. The two sides of the compaction spring 234 are fixedly connected to the outer side of the compaction ring 232 and the compaction rod 233, respectively. An inclined plate 236 is fixedly connected to one end of the compaction rod 233 located outside the compaction ring 232. An expansion ring 14 is fixedly installed on the main frame 1 on the front side of the compaction ring 232. The expansion ring 14 is concentric with the compaction ring 232 and is used to cooperate with the inclined plate 236 to expand the compaction rod 233, making it convenient for workers to pass the cable through the compaction rod 233 when preparing for work. The lower end of the straightening block 241 has a comb-like structure to prevent the wire harness from falling below the straightening block 241.
[0043] See Figure 7 , Figure 9 Two straightening cylinders 24 arranged in a mirror image are fixedly connected to the electric slider 21 and located behind the track rod 22. A straightening block 241 is fixedly installed at the end of the piston rod of the straightening cylinder 24. A freely rolling steel ball is embedded on the opposite side of the two straightening blocks 241 to reduce the friction of the straightening block 241 on the cable during straightening and prevent the straightening block 241 from scratching the cable.
[0044] The straightening and straightening section 2 of this invention can straighten the wire bundle to be wound by straightening cylinder 24, smoothing out the bulges formed on the surface of the wire bundle and effectively preventing them from affecting the adhesion of the insulating plastic tape. The straightening and straightening section 2 can also compact the wound insulating plastic tape by pressing rod 233, which can effectively prevent the insulating plastic tape from falling off due to loose winding and further improve the durability of the product.
[0045] Specifically, when processing begins, the worker first needs to follow the steps described above to pass the cable through the length control section 3. The cable, having already passed through the length control section 3, is then passed backward through the expansion ring 14, guided by it, through the middle of multiple compaction rollers 235, and then sequentially through the rotating toothed ring 23 and the straightening block 241. Next, the insulating plastic tape roll is installed onto the winding frame 231, and then the insulating plastic tape is pulled out and adhered to the wire harness. Following the steps described above, the telescopic rod 31 begins to move towards the center under the action of the tension cylinder 34 to gather and straighten the multiple wire harnesses. The cylinder 24 extends, and the electric slider 21 drives the entire wire straightening and sorting section 2 to move backward along the slide rail 11. Then, the inclined plate 236 separates from the expansion ring 14. Under the action of the compaction spring 234, the compaction roller 235 presses the wire harness tightly, and the straightening block 241 straightens the gathered wire harness. At the same time, the drive motor 25 drives the rotating gear ring 23 through the drive gear 251. The rotating gear ring 23 drives the winding frame 231 to rotate around the cable and wind the wire harness. Then, the compaction roller 235 compacts the wound insulating plastic tape.
[0046] Workers need to control the distance the electric slider 21 slides on the slide rail 11 according to the required winding length. After winding is completed, the finished product is removed. Thus, the mechanism completes one work cycle.
[0047] It should be noted that when the telescopic rod 31 moves upward to the top, the clamping block 37 and the center of the rotating gear ring 23 are in the same plane.
[0048] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention, which are still covered within the protection scope of the present invention.
Claims
1. An automatic assembly device for automotive wiring harnesses, comprising a main frame (1), characterized in that, Two slide rails (11) arranged in a mirror image are fixedly connected above the main frame (1). A wire straightening and organizing part (2) is slidably connected above the two slide rails (11). A length control part (3) is provided on the main frame (1) and in front of the wire straightening and organizing part (2). The length control unit (3) includes two symmetrical square slots (13) on the main frame (1) and located in front of the straightening and organizing unit (2). Multiple sliding blocks (32) are slidably connected within the square slots (13). Telescopic rods (31) are slidably connected to the sliding blocks (32). A telescopic rod (31) is also slidably connected to the main frame (1) between the two square slots (13). A clamping block (37) is fixedly connected to the upper side of the telescopic rod (31). All telescopic rods (31) have a clamping block (37) on their lower side. An equidistant adjustment component (33) is fixedly connected to two tension cylinders (34) arranged in a left-right mirror configuration on the lower side of the main frame (1) and behind the telescopic rod (31). The piston rods of the two tension cylinders (34) are fixedly connected to two sliding blocks (32) located at the leftmost and rightmost ends respectively. An upper push sleeve (321) is sleeved under the two sliding blocks (32) located at the leftmost and rightmost ends. A wedge block (12) is fixedly connected on the main frame (1) between the two upper push sleeves (321). The front side of the main frame (1) is slidably connected with length control blocks (35) in the same number as the number of sliding blocks (32). A lead screw (351) is threaded onto the length control block (35). A snap-fit block (36) is rotatably connected to the rear end of the lead screw (351). The lower end of the snap-fit block (36) is in close contact with the main frame (1). A connecting rod (352) is fixedly connected to the lower end of the length control block (35). The end of the connecting rod (352) away from the length control block (35) is fixedly connected to the sliding block (32) at its corresponding position. The upper side of the snap-fit block (36) is provided with a stepped groove (361), which is wider at the top and narrower at the bottom. A stop block (362) is slidably connected at the junction of the width and narrowness of the stepped groove (361). The stop block (362) passes through the snap-fit block (36), and the part of it that passes through the snap-fit block (36) is fixedly connected to the snap-fit block (36) by a clamping spring (363).
2. The automatic assembly device for automotive wiring harnesses according to claim 1, characterized in that, The straightening and tidying section (2) includes an electric slider (21) slidably connected above the slide rail (11). A track rod (22) is fixedly connected to one side of the two electric sliders (21) that are close to each other. The end of the track rod (22) away from the electric slider (21) is arc-shaped. The arcs on the two track rods (22) form a ring. A rotating gear ring (23) is rotatably connected inside the ring. A winding frame (231) is fixedly connected inside the rotating gear ring (23). A motor frame (221) is fixedly connected below the track rod (22). A drive motor (25) is fixedly connected to the motor frame (221). (25) A drive gear (251) is fixedly installed on the output shaft. The drive gear (251) meshes with the rotating gear ring (23). A compaction ring (232) is fixedly connected to the side of the rotating gear ring (23). Multiple compaction rods (233) are slidably connected on the compaction ring (232). A compaction spring (234) is sleeved on the part of the compaction rod (233) located outside the compaction ring (232). The two sides of the compaction spring (234) are fixedly connected to the outside of the compaction ring (232) and the compaction rod (233) respectively. A compaction roller (235) is rotatably connected to one end of the compaction rod (233) located inside the compaction ring (232).
3. The automatic assembly device for automotive wiring harnesses according to claim 2, characterized in that, Two straightening cylinders (24) arranged in a mirror image are fixedly connected to the electric slider (21) and located behind the track rod (22). A straightening block (241) is fixedly installed at the end of the piston rod of the straightening cylinder (24).
4. The automatic assembly device for automotive wiring harnesses according to claim 3, characterized in that, The two straightening blocks (241) have freely rolling steel balls embedded on opposite sides to reduce the friction of the straightening blocks (241) on the cable during straightening.
5. The automatic assembly device for automotive wiring harnesses according to claim 2, characterized in that, A compaction ring (232) is fixedly connected to the front side of the rotating gear ring (23). Multiple compaction rods (233) are slidably passed through the compaction ring (232). A compaction spring (234) is sleeved on the part of the compaction rod (233) located outside the compaction ring (232). The two sides of the compaction spring (234) are fixedly connected to the outside of the compaction ring (232) and the compaction rod (233) respectively. An inclined plate (236) is fixedly connected to one end of the compaction rod (233) located outside the compaction ring (232). An expansion ring (14) is fixedly installed on the main frame 1 on the front side of the compaction ring (232). The expansion ring (14) is concentric with the compaction ring (232) and is used to cooperate with the inclined plate (236) to expand the compaction rod (233) so that the cable can pass through the compaction rod (233) when the worker is preparing.
6. The automatic assembly device for automotive wiring harnesses according to claim 1, characterized in that, The clamping block (37) includes a clamping base (371) fixedly installed on the top of the telescopic rod (31), and a clamping top plate (372) is hinged on the clamping base (371). The clamping base (371) and the clamping top plate (372) are fastened together by bolts passing through them. The lower side of the clamping top plate (372) is provided with multiple wire grooves of different radii for clamping and fixing cables of different sizes.
7. The automatic assembly device for automotive wiring harnesses according to claim 1, characterized in that, The equidistant adjustment component (33) consists of a main hinge rod (331) and a secondary hinge rod (332) that are arranged to cross each other. The main hinge rod (331) and the secondary hinge rod (332) are hinged to each other at the intersection position. The pin at the hinge point of the main hinge rod (331) and the secondary hinge rod (332) is fixedly installed below the telescopic rod (31). The extension and retraction of the tension cylinder (34) are used to control the spacing between all sliding blocks (32).
8. The automatic assembly device for automotive wiring harnesses according to claim 3, characterized in that, The lower end of the straightening block (241) has a comb-like structure to prevent the wire harness from falling below the straightening block (241).