A stranding device suitable for use in automotive wiring harnesses

Abstract

The application belongs to the field of wire harness processing, in particular to a stranding device suitable for automobile wire harness, two sets of locking benches are symmetrically arranged, the front end of the locking bench is provided with a fixed bench capable of translating and rotating, a cutting bench capable of translating is arranged between the two sets of locking benches, the locking bench comprises a driving cylinder and a locking cylinder arranged in parallel, the locking cylinder is used for gathering and fixing the wire harness, through such arrangement, not only the full-automatic wire harness stranding work is realized, but also the process flow is continuously carried out, the working efficiency is effectively improved, the two ends of the finished wire harness are temporarily locked, the problem that the wire harness is easily bounced back and loose after the stranding is completed due to the internal accumulated elastic stress after the external pulling force or clamping force is removed is greatly reduced, and the finished product quality is further improved.

Description

Technical Field

[0001] This invention belongs to the field of wire harness processing, specifically a stranding device suitable for automotive wire harnesses. Background Technology

[0002] Automotive wiring harnesses are the main network components of automotive circuits, consisting of wires, terminals, sheaths, tapes, cable ties, and PVC pipes. They act like the nervous system of a car, connecting all the vehicle's electrical and electronic components to achieve power distribution, signal transmission, and control.

[0003] Wire harness twisting involves fixing one end of two or more wires and attaching the other end to a rotatable machine. The machine is then rotated at a set speed to form a tight spiral structure, which is then secured with tape or cable ties. Wire harness twisting offers three main advantages: first, it enhances electromagnetic interference resistance by canceling out external interference signals on the two wires through the twisted structure; second, it improves mechanical flexibility, facilitating bending and wiring, and absorbing vibration; and third, it improves heat dissipation, as the gaps between the wires allow for airflow.

[0004] Traditional stranding devices have relatively simple functions and are difficult to complete fully automatic and uninterrupted stranding processes, which seriously affects production efficiency. At the same time, when the finished product is released, the accumulated elastic stress inside causes the strand to bounce back and loosen after the external tension or clamping force is removed, which affects the quality of the finished product.

[0005] Therefore, the present invention provides a stranding device suitable for automotive wiring harnesses. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a stranding device suitable for automotive wiring harnesses, including a sorting disc for fixing the wiring harness. The front end of the sorting disc is provided with two sets of locking platforms, which are symmetrically arranged. The front end of each locking platform is provided with a fixing platform that can be translated and rotated. A cutting platform that can be translated is provided between the two sets of locking platforms. Each locking platform includes a driving cylinder and a locking cylinder arranged in parallel. The locking cylinder is used to allow the wiring harness to gather and fix itself. This setup not only enables fully automated wire harness twisting but also ensures uninterrupted process flow, effectively improving work efficiency. Furthermore, it temporarily locks both ends of the finished wire harness, significantly reducing the risk of the harness rebounding or loosening after twisting due to accumulated internal elastic stress and the removal of external tension or clamping force. This further improves finished product quality. Additionally, in subsequent processes such as adding wire harness protective sleeves, the locking mechanism can be removed or retained as needed without affecting subsequent processing.

[0008] Preferably, the sorting disc has multiple slots on its surface, in which a sliding plate is slidably engaged. Both the sliding plate and the sorting disc have binding holes for the wire harness to pass through. Support frames are installed at both ends of the sorting disc. When producing higher-requirement finished products, such as inner and outer layer wire harnesses requiring different twist angles, or producing a high-requirement product with a tightly wrapped outer anti-interference layer and a slightly entangled inner communication layer, a drive structure can be installed inside the support frame to control its rotation. This rotation causes the wire harnesses passing through all the binding holes to be twisted at the front end. At this point, the fixing platform no longer rotates, but only the end of the fixed wire harness moves backward. By passing the outer layer wire harness through the outermost binding hole and the inner layer wire harness through the innermost binding hole, and then through the central binding hole without rotation, finished wire harnesses of different specifications can be customized. The sliding plate allows for appropriate adjustment of the binding hole positions to meet different positional requirements.

[0009] Preferably, the locking platform further includes a base, the top of which is fixedly connected to the drive cylinder and the locking cylinder via a support frame 2. Both sides of the fixed platform are provided with screw and nut mechanisms for driving the fixed platform to move horizontally. The screw and nut mechanisms are used to drive the fixed platform to move horizontally, thereby pulling out the wire harness of the required length. By setting locking platforms at both ends of the cutting table, not only can the rear end of the finished wire harness be temporarily locked at the same time, but the front end of the wire harness to be processed can also be temporarily locked at the same time, thereby improving processing efficiency.

[0010] Preferably, a heat supply pump is fixedly connected to the top of the locking cylinder, and a hot melt tank is fixedly connected to the top of the base. The hot melt tank and the heat supply pump are connected through a transmission pipe. The bottom output end of the heat supply pump is connected to the inside of the locking cylinder. A pressure pump is installed in the middle of the transmission pipe. Temporary locking can be achieved by spraying hot melt adhesive onto the surface of the wire harness. When it is necessary to temporarily fix the wire harness, hot melt adhesive is supplied to the heat supply pump through the hot melt tank and the transmission pipe. The hot melt adhesive is sprayed out from the top inside the locking cylinder in a downward covering manner. The molten hot melt adhesive quickly covers and fills the gaps between the wire harnesses. After quickly filling a certain amount, the cold air module built into the locking cylinder is activated to cool the hot melt adhesive and make it solidify quickly. In this way, the hot melt adhesive can fill the gaps between the wire harnesses. And because the wire harnesses with different degrees of twist are connected to each other, even if the fixation at both ends of the wire harness is loosened, the wire harness will not rebound violently and will still maintain the required twist state, ensuring the quality of the finished product.

[0011] Preferably, the locking cylinder has a built-in electric heating module, and a return hole is provided at the bottom of the locking cylinder. The return hole is arranged in a cross shape. The inside of the locking cylinder is also provided with a return groove that is connected to the return hole and the heat supply pump. The electric heating module is used to ensure the internal temperature during the hot melt adhesive discharge stage, so that the hot melt adhesive can quickly cover all cables from top to bottom. At the same time, since the return groove is connected to the heat supply pump above, the heat supply pump will apply suction to the transmission pipe and the return groove simultaneously. The two suctions are independent, so that there is always suction in the return hole, which can drag the hot melt adhesive inside the locking cylinder, so that the hot melt adhesive will not spread to both ends during the filling process, but will only flow quickly from top to bottom and cover the wire harness. A small amount of hot melt adhesive will solidify quickly under cooling, without requiring a long solidification time. The cross-shaped return hole extends to the edge of the locking cylinder to reduce the problem of hot melt adhesive overflow.

[0012] Preferably, multiple drivers are fixed to the outer side of the drive cylinder, the inner ring of the drive cylinder is covered with an elastic extrusion pad, the drive end of the driver is in contact with the extrusion pad, and an elastic outer scraper is fixed to the outer side of the locking cylinder. The driver can be an electrically driven elliptical roller, which continuously contacts the wire harness through the extrusion pad during rotation and fixation, thereby driving the wire harness to move forward steadily. After the wire harness is cut, it assists in the forward movement of the wire harness end. The outer scraper can scrape off excess hot melt adhesive on the surface of the wire harness, reducing surface defects of the finished product.

[0013] Preferably, the cutting table includes a slitting frame, with two lifting posts fixed to the outer side of the slitting frame. A blade is fixed to the moving end of each lifting post. A flip-up pressure plate is provided on the outer side of each lifting post. An electric slide rail for moving the cutting table is installed at the bottom of the cutting table. When it is necessary to cut the wire harness, the blade is lowered by controlling the lifting posts to cut the wire harness. Before cutting, the pressure plate is pressed down to fix the end of the wire harness to one side of the cutting table, ensuring stable cutting while also allowing the end of the wire harness to remain on the cutting table temporarily after cutting.

[0014] Preferably, rotating piles are fixedly connected to both the upper and lower ends of the lifting pile. An adjusting arm is fixedly connected to the rotating end of each rotating pile. The adjusting arm is slidably engaged with the surface of the pressure plate, and an elastic element is also fixedly connected between the adjusting arm and the pressure plate. The rotating pile drives the adjusting arm to rotate, allowing the upper and lower pressure plates to fix the wire harness. After the cutting operation is completed, the rotating pile continues to drive the adjusting arm to rotate. Due to the slidable engagement between the adjusting arm and the pressure plate, and the presence of the elastic element, the pressure plate will press and transport the end of the wire harness towards the cutting table during rotation. At this time, a rearward drive is also required. The drive of the moving cylinder ensures that the end of the wire harness can move forward slowly and pass smoothly through the cutting table. When the pressure plate rotates to near vertical, the pressure on the wire harness is at its maximum. This allows the electric slide rail to move the cutting table, and the wire harness can also move stably until the end of the wire harness aligns with the front drive cylinder. The drive cylinder then uses squeezing friction to drive the end of the wire harness to continue moving forward until it passes through the locking cylinder. Since the end of the wire harness is fixed by hot melt adhesive at this point, it will not spread outwards, ensuring that the end of the wire harness can pass smoothly through the locking cylinder and be captured by the fixing table.

[0015] Preferably, the fixing platform consists of two hemispherical covers, with open ends. An expansion ring is fixed to the open end of each hemispherical cover. A closing clamp capable of opening and closing is fixed to the outer side of each hemispherical cover. A negative pressure module is also fixed to the outer side of each hemispherical cover. When it is necessary to fix the end of the wire harness, simply open the hemispherical cover using the closing clamp, and close it after approaching the wire harness to fix the end of the wire harness inside the hemispherical cover. At the same time, the expansion ring can expand itself by inflating and deflating air, thereby improving the fixing effect. When it is completely fixed, opening the negative pressure module generates negative pressure inside the hemispherical cover. Some negative pressure will leak out along the gap, but most of the negative pressure will still act on the wire harness. In this state, the wire harness that is not directly squeezed can also be well fixed by the fixing platform, and there will be no problem of relative sliding and displacement of the inner layer wire harness during the pulling process.

[0016] Preferably, a crossbeam is installed between the moving ends of the two lead screw and nut mechanisms. A drive motor is fixedly connected to the middle of the crossbeam. A control panel for controlling the opening and closing of the tail of the closing clamp is fixedly connected to the rotating end of the drive motor. The opening and closing of the tail of the closing clamp is controlled by the control panel, which in turn controls the opening and closing of the fixed platform. At the same time, the drive motor drives the control panel to rotate, which in turn drives the fixed platform to rotate, thereby realizing the twisting process of the wire harness.

[0017] The beneficial effects of this invention are as follows: 1. The present invention provides a stranding device suitable for automotive wiring harnesses. By setting up a locking table, a cutting table, and a fixing table, it not only realizes fully automatic wiring harness stranding work, but also allows the process to proceed uninterrupted, effectively improving work efficiency. At the same time, it temporarily locks both ends of the finished wiring harness, greatly reducing the problem of the wiring harness rebounding and loosening after the external tension or clamping force is removed due to the accumulated elastic stress inside. This further improves the quality of the finished product. In subsequent processes such as adding wiring harness protective sleeves, the locking parts can be removed or retained as needed without affecting the subsequent processing flow.

[0018] 2. The present invention provides a stranding device for automotive wiring harnesses. When higher-requirement finished products are needed, such as inner and outer layer wiring harnesses requiring different twist angles, or producing a high-requirement finished product with a tightly wrapped outer anti-interference layer and a slightly entangled inner communication layer, a drive structure can be installed inside the support frame to control the rotation of the support frame. This, in turn, drives the wiring harness passing through all the binding holes to be stranded at the front end. At this time, the fixing platform no longer rotates, but only the end of the fixed wiring harness moves backward. By passing the outer layer wiring harness through the outermost binding hole and the inner layer wiring harness through the innermost binding hole, and passing through the central binding hole without rotation, finished wiring harnesses of different specifications can be customized. The position of the binding holes can be adjusted appropriately by the setting of the sliding plate to meet different positional requirements. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a perspective view of the sorting plate, locking table, and cutting table of the present invention; Figure 3 This is a perspective view of the sorting disc and locking station of the present invention; Figure 4 This is a perspective view of the locking platform of the present invention; Figure 5 This is a perspective view of the locking cylinder of the present invention; Figure 6 This is a perspective view of the cutting table of the present invention; Figure 7 This is a perspective view of the cutting table and pressure plate of the present invention; Figure 8 This is a perspective view of the fixing platform of the present invention; In the diagram: 1. Sorting plate; 2. Electric slide rail; 3. Locking platform; 4. Fixing platform; 5. Screw and nut mechanism; 6. Slide plate; 7. Cutting table; 9. Restraint hole; 10. Support frame one; 11. Drive cylinder; 12. Locking cylinder; 13. Driver; 14. Heat supply pump; 15. Transmission pipe; 16. Base; 17. Support frame two; 18. Hot melt tank; 19. Pressurization pump; 20. External scraper; 21. Return hole; 22. Slitting frame; 23. Pressure plate; 24. Knife table; 25. Lifting post; 26. Rotating post; 27. Adjusting arm; 28. Expansion ring; 29. ​​Closing clamp; 30. Negative pressure module; 31. Control panel; 32. Drive motor; 33. Crossbeam. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] like Figures 1 to 8 As shown in the embodiment of the present invention, a stranding device suitable for automotive wiring harnesses includes a sorting disc 1 for fixing the wiring harness. The front end of the sorting disc 1 is provided with two sets of locking platforms 3, which are symmetrically arranged. The front end of each locking platform 3 is provided with a fixing platform 4 capable of translation and rotation. A cutting platform 7 capable of translation is provided between the two sets of locking platforms 3. Each locking platform 3 includes a driving cylinder 11 and a locking cylinder 12 arranged in parallel. The locking cylinder 12 is used to allow the wiring harness to gather and fix itself. During operation, multiple wire harnesses are passed through sorting tray 1 to disperse them, facilitating the confirmation of their type and quantity, as well as determining which harnesses are in the center and which are on the outside during stranding. After confirmation, the ends of the multiple wire harnesses are gathered at locking station 3. At this point, the bundled wire harnesses have been manually layered, ensuring that they are layered inside and out according to the predetermined arrangement. The wire harnesses are passed through two locking stations 3 and also through the cutting station 7 in the middle. Finally, the fixing station 4 is used to uniformly fix the ends of the wire harnesses. After the preparation work is completed, the locking station 3 closest to the fixing station 4 is used to cut the outer edge of the wire harness towards the front. Locking is performed, including but not limited to, using cable ties, rubber bands, hot melt glue, etc., to temporarily fix the bundled wires together. Then, the fixing platform 4 pulls the wire bundle outward and rotates during the pulling process, causing the originally straight wire bundles to glue together into a spiral shape. During the pulling process, new wire bundles continuously pass through the rear end of the sorting plate 1, through the two locking platforms 3 and the cutting platform 7. Since the locking platforms 3 and the cutting platform 7 do not restrict the transmission of spiral force, the spiral state of the wire bundle will extend to the locking platform 3 closest to the sorting plate 1. Therefore, before the first stranding process, First, the fixed platform 4 is used to rotate the wire harness while it is stationary to reduce the error in the first processing. After the length is reached, the cutting platform 7 is used to cut the wire harness as a whole. During the cutting, the cutting platform 7 will also temporarily pull the two ends of the wire harness, causing it to fall off the two ends of the cutting platform 7. The drive cylinder 11 can slowly and powerfully transport the wire harness forward, facilitating the connection process between the front and rear wire harnesses. At the same time as cutting, the two locking platforms 3 simultaneously lock the wire harness at the corresponding positions. The purpose of locking the wire harness with the locking platform 3 near the fixed platform 4 is to ensure that the finished wire harness is properly connected to the front. The end is temporarily locked; when the locking platform 3 near the sorting plate 1 locks the wire harness, the front end of the wire harness that is about to be twisted is temporarily locked; then the fixing platform 4 continues to pull the finished product outward, and releases the fixing after the finished product moves out of the locking platform 3. At this time, the two temporarily locked finished products will fall down and be collected to obtain the finished product; the end of the wire harness at the rear is temporarily fixed by the cutting platform 7, and the cutting platform 7 can pull the end of the wire harness through the outermost locking platform 3 and be fixed by the fixing platform 4. Then the cutting platform 7 moves back to its original position, so that the next wire harness twisting operation can be repeated. This setup not only enables fully automated wire harness twisting but also ensures uninterrupted process flow, effectively improving work efficiency. Furthermore, it temporarily locks both ends of the finished wire harness, significantly reducing the risk of the harness rebounding or loosening after twisting due to accumulated internal elastic stress and the removal of external tension or clamping force. This further improves finished product quality. Additionally, in subsequent processes such as adding wire harness protective sleeves, the locking mechanism can be removed or retained as needed without affecting subsequent processing.

[0023] The surface of the sorting disk 1 is provided with multiple slots, in which a sliding plate 6 is slidably engaged. Both the sliding plate 6 and the surface of the sorting disk 1 are provided with binding holes 9 for the wire harness to pass through. Both ends of the sorting disk 1 are equipped with support frames 10. During operation, when higher-requirement finished products are needed, such as inner and outer layer wire harnesses requiring different twist angles, or producing high-requirement finished products with a tightly wrapped outer anti-interference layer and a slightly entangled inner communication layer, a drive structure can be installed inside the support frame 10 to control the rotation of the support frame 10. This, in turn, causes the wire harnesses passing through all the binding holes 9 to twist at the front end. At this time, the fixing table 4 no longer rotates, but only the end of the fixed wire harness moves backward. By passing the outer layer wire harness through the outermost binding hole 9 and the inner layer wire harness through the innermost binding hole 9, and passing through the center binding hole 9 without rotation, finished wire harnesses of different specifications can be customized. The position of the binding hole 9 can be adjusted appropriately by the setting of the slide plate 6 to meet different position requirements.

[0024] The locking platform 3 also includes a base 16. The top of the base 16 is fixedly connected to the drive cylinder 12 and the locking cylinder 11 through a support frame 2 17. Both sides of the fixed platform 4 are provided with screw and nut mechanisms 5 for driving the fixed platform 4 to move horizontally. During operation, the lead screw and nut mechanism 5 is used to drive the fixed table 4 to move horizontally, thereby pulling out the wire harness of the required length. By setting locking tables 3 at both ends of the cutting table 7, not only can the rear end of the finished wire harness be temporarily locked at the same time, but the front end of the wire harness to be processed can also be temporarily locked at the same time, thus improving processing efficiency.

[0025] A heat supply pump 14 is fixedly connected to the top of the lock cylinder 12, and a hot melt tank 18 is fixedly connected to the top of the base 16. The hot melt tank 18 and the heat supply pump 14 are connected through a transmission pipe 15. The bottom output end of the heat supply pump 14 is connected to the inside of the lock cylinder 12, and a pressure pump 19 is installed in the middle of the transmission pipe 15. During operation, temporary locking can be achieved by spraying hot melt adhesive onto the surface of the wire harness. When it is necessary to temporarily fix the wire harness, hot melt adhesive is supplied to the heat supply pump 14 through the hot melt tank 18 and the transmission pipe 15. The hot melt adhesive is sprayed out from the top of the inner side of the locking cylinder 12 in a downward covering manner. The molten hot melt adhesive quickly covers and fills the gaps between the wire harnesses. After quickly filling a certain amount, the cold air module built into the locking cylinder 12 is activated to cool the hot melt adhesive and make it solidify quickly. In this way, the hot melt adhesive can fill the gaps between the wire harnesses. And because the wire harnesses with different degrees of twist are connected to each other, even if the fixation at both ends of the wire harness is loosened, the wire harness will not rebound violently and will still maintain the required twist state, ensuring the quality of the finished product.

[0026] The locking cylinder 12 has a built-in electric heating module. The bottom of the locking cylinder 12 is provided with a return hole 21, which is arranged in a cross shape. The inside of the locking cylinder 12 is also provided with a return groove that communicates with the return hole 21 and the heat supply pump 14. During operation, the heating module maintains the internal temperature during the hot melt adhesive discharge stage, allowing the hot melt adhesive to quickly cover all cables from top to bottom. Simultaneously, since the return channel is connected to the upper heat supply pump 14, the heat supply pump 14 applies suction to both the transmission pipe 15 and the return channel. The two suctions are independent, ensuring that the return hole 21 always has suction, which can drag the hot melt adhesive inside the locking cylinder 12, preventing the hot melt adhesive from spreading to both ends during the filling process. Instead, it flows quickly from top to bottom and covers the wire harness. A small amount of hot melt adhesive will solidify quickly upon cooling, requiring no long solidification time. The cross-shaped return hole 21 extends to the edge of the locking cylinder 12, reducing the problem of hot melt adhesive overflow.

[0027] Multiple drivers 13 are fixedly connected to the outer side of the drive cylinder 11, the inner ring of the drive cylinder 11 is covered with an elastic material extrusion pad, the drive end of the driver 13 is in contact with the extrusion pad, and an elastic material outer scraper 20 is fixedly connected to the outer side of the locking cylinder 12. During operation, the driver 13 can be an electrically driven elliptical roller that continuously contacts the wire harness through the extrusion pad while rotating and fixing, thereby driving the wire harness to move forward steadily. After the wire harness is cut, it assists in the forward movement of the wire harness end. The outer scraper 20 can scrape off excess hot melt adhesive from the surface of the wire harness, reducing surface defects of the finished product.

[0028] The cutting table 7 includes a slitting frame 22, two lifting posts 25 are fixedly connected to the outside of the slitting frame 22, a knife table 24 is fixedly connected to the moving end of the lifting post 25, a flip-up pressure plate 23 is provided on the outside of the lifting post 25, and an electric slide rail 2 for moving the cutting table 7 is installed at the bottom of the cutting table 7. During operation, when it is necessary to cut the wire harness, the cutting table 24 is lowered by controlling the lifting pile 25 to cut the wire harness. Before cutting, the pressure plate 23 is pressed down to fix the end of the wire harness on one side of the cutting table 7, ensuring stable cutting and allowing the end of the wire harness to remain on the cutting table 7 temporarily after cutting.

[0029] The lifting pile 25 is fixedly connected to the upper and lower ends of the outer side of the lifting pile 25. The rotating end of the rotating pile 26 is fixedly connected to the adjusting arm 27. The adjusting arm 27 is slidably engaged with the surface of the pressure plate 23, and an elastic element is also fixedly connected between the adjusting arm 27 and the pressure plate 23. During operation, the rotating post 26 drives the adjusting arm 27 to rotate, allowing the upper and lower pressure plates 23 to fix the wire harness. After the cutting operation is completed, the rotating post 26 continues to drive the adjusting arm 27 to rotate. Due to the sliding engagement between the adjusting arm 27 and the pressure plate 23, and the presence of an elastic element, the pressure plate 23 will press and transport the end of the wire harness towards the cutting table 7 during rotation. At this time, the drive cylinder 11 is also required to ensure that the end of the wire harness can move forward slowly and pass smoothly through the cutting table 7. When the pressure plate 23 rotates to near vertical, the pressure on the wire harness is at its maximum. This allows the electric slide rail 2 to move the cutting table 7, and the wire harness can also move stably until the end of the wire harness is connected to the front drive cylinder 11. The drive cylinder 11 drives the end of the wire harness to continue moving forward through the squeezing friction until it passes through the locking cylinder 12. Since the end of the wire harness is fixed by hot melt glue at this time, it will not spread outward, ensuring that the end of the wire harness can pass smoothly through the locking cylinder 12 and be captured by the fixing table 4.

[0030] The fixed platform 4 consists of two hemispherical covers, and the ends of the hemispherical covers are open. An expansion ring 28 is fixedly connected to the open end of the hemispherical cover. A closing clamp 29 capable of opening and closing is fixedly connected to the outside of the hemispherical cover. A negative pressure module 30 is fixedly connected to the outside of the hemispherical cover. When it is necessary to fix the end of the wire harness during operation, simply open the hemispherical cover with the closing clamp 29, close the hemispherical cover after approaching the wire harness, and the end of the wire harness can be fixed inside the hemispherical cover. At the same time, the expansion ring 28 can expand itself by inflating and deflating air, thereby improving the fixing effect. After it is completely fixed, the negative pressure module 30 is opened to generate negative pressure inside the hemispherical cover. Some negative pressure will leak out along the gap, but most of the negative pressure will still act on the wire harness. In this state, the wire harness that is not directly squeezed can also be well fixed by the fixing platform 4, and there will be no problem of relative sliding of the inner wire harness during the pulling process, thus avoiding the problem of misalignment.

[0031] A crossbeam 33 is installed between the moving ends of the two lead screw and nut mechanisms 5. A drive motor 32 is fixedly connected to the middle of the crossbeam 33. A control panel 31 for controlling the opening and closing of the tail of the closing clamp 29 is fixedly connected to the rotating end of the drive motor 32. During operation, the opening and closing of the tail of the closing clamp 29 is controlled by the control panel 31, which in turn controls the opening and closing of the fixed platform 4. At the same time, the drive motor 32 drives the control panel 31 to rotate, which in turn drives the fixed platform 4 to rotate, thereby realizing the twisting process of the wire harness.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stranding device suitable for automotive wiring harnesses, characterized in that: The device includes a sorting disc for fixing wire harnesses. The front end of the sorting disc is provided with two sets of locking platforms, which are symmetrically arranged. The front end of each locking platform is provided with a fixing platform that can be translated and rotated. A cutting platform that can be translated is provided between the two sets of locking platforms. Each locking platform includes a drive cylinder and a locking cylinder arranged in parallel. The locking cylinder is used to allow the wire harness to gather and fix itself.

2. The stranding device for automotive wiring harnesses according to claim 1, characterized in that: The sorting disc has multiple slots on its surface, in which a sliding plate is slidably engaged. Both the sliding plate and the sorting disc have binding holes on their surfaces for the wire harness to pass through. Support frames are installed at both ends of the sorting disc.

3. A stranding device suitable for automotive wiring harnesses according to claim 2, characterized in that: The locking platform also includes a base, the top of which is fixedly connected to the drive cylinder and the locking cylinder via a support frame 2. Both sides of the fixed platform are provided with screw and nut mechanisms for driving the fixed platform to move horizontally.

4. A stranding device suitable for automotive wiring harnesses according to claim 3, characterized in that: A heat supply pump is fixedly connected to the top of the locking cylinder, and a hot melt tank is fixedly connected to the top of the base. The hot melt tank and the heat supply pump are connected through a transmission pipe. The bottom output end of the heat supply pump is connected to the inside of the locking cylinder, and a pressure pump is installed in the middle of the transmission pipe.

5. A stranding device suitable for automotive wiring harnesses according to claim 4, characterized in that: The locking cylinder has a built-in electric heating module, and a reflux hole is opened at the bottom of the locking cylinder. The reflux hole is arranged in a cross shape. The locking cylinder also has a reflux groove that is connected to the reflux hole and the heat supply pump.

6. A stranding device suitable for automotive wiring harnesses according to claim 5, characterized in that: Multiple drivers are fixed to the outer side of the drive cylinder, the inner ring of the drive cylinder is covered with an elastic material extrusion pad, the drive end of the driver is in contact with the extrusion pad, and an elastic material outer scraper is fixed to the outer side of the locking cylinder.

7. A stranding device for automotive wiring harnesses according to claim 6, characterized in that: The cutting table includes a slitting frame, two lifting posts are fixedly connected to the outer side of the slitting frame, a knife holder is fixedly connected to the moving end of the lifting posts, a flip-up pressure plate is provided on the outer side of the lifting posts, and an electric slide rail for moving the cutting table is installed at the bottom of the cutting table.

8. A stranding device suitable for automotive wiring harnesses according to claim 7, characterized in that: The lifting pile has rotating piles fixedly connected to both the upper and lower ends on its outer side. The rotating end of the rotating pile is fixedly connected to an adjusting arm. The adjusting arm is slidably engaged with the surface of the pressure plate, and an elastic element is also fixedly connected between the adjusting arm and the pressure plate.

9. A stranding device for automotive wiring harnesses according to claim 8, characterized in that: The fixed platform consists of two hemispherical covers, with open ends. An expansion ring is fixed to the open end of the hemispherical cover, and a closing clamp capable of opening and closing is fixed to the outside of the hemispherical cover. A negative pressure module is fixed to the outside of the hemispherical cover.

10. A stranding device suitable for automotive wiring harnesses according to claim 9, characterized in that: A crossbeam is installed between the moving ends of the two lead screw and nut mechanisms. A drive motor is fixedly connected to the middle of the crossbeam, and a control panel for controlling the opening and closing of the tail of the closing clamp is fixedly connected to the rotating end of the drive motor.

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