Manufacturing method and device of USB wire meeting 10ft signal transmission

Abstract

The new cable structure and manufacturing method designed by the application adopts double-layer extrusion, the first layer adopts transparent PP material and the second layer adopts colored PP material, so that the OD stability of the wire rod can be ensured and color distinction can be made, and the high-frequency signal transmission of 10ft can be met. The sorting counting device in the production process of the application can automatically separate a bundle of packaged and transported wire rods one by one through the setting of the rotating device, and count the number of the wire rods, so that the wire rods can be separated one by one before the next process, manual sorting difficulty caused by winding together during transportation and packaging can be avoided, and the automatic sorting device can save manpower and material resources, improve work efficiency and reduce work cost.

Description

Technical Field

[0001] This invention belongs to the field of USB cables, and specifically relates to a method and apparatus for manufacturing a USB cable that meets the requirements of 10ft signal transmission. Background Technology

[0002] USB is the most widely used external bus standard in the PC field, used to standardize the connection and communication between computers and external devices. USB interfaces support plug-and-play and hot-swapping capabilities. With the rapid development of computer hardware, the application of USB has increased the speed of data transfer between external devices. The biggest benefit of this increased speed for users is that they can use more efficient external devices. Currently, insulation extrusion is done in one go. However, due to the long signal transmission length of 10ft, the corresponding wire OD is large. The OD of the wire extruded in one go is unstable, the roundness decreases, and the matching of the two signal lines is poor, so the high frequency requirements cannot be met.

[0003] Meanwhile, during the production process of wire production line, the wire often needs to be transported multiple times. At this time, the wire is packaged and transported, and then it needs to be sorted and broken up again in the next process for processing into individual wires. This process is generally carried out by manual sorting, which increases manpower and material resources and greatly increases production costs.

[0004] Therefore, there is a need for a method and apparatus for manufacturing USB cables that can transmit signals at 10ft. Summary of the Invention

[0005] The above-mentioned objective of this invention is achieved through the following technical solutions: A method for manufacturing a USB cable that supports 10ft signal transmission, characterized by the following steps: S1: Select 7 tin-plated copper wires with a diameter of 0.203±0.005mm and twist them together to form a signal transmission wire using a 400-type ultra-fine copper stranding machine; S2: Select step S1 to wrap the signal wire with a double layer of PP insulation (inner transparent layer + outer green and white layer) to form a signal wire with an outer diameter of 1.68±0.05mm. Use a 50mm ultra-fine extrusion machine to form green insulation A and green insulation B. S3: Select 41 tin-plated copper wires with a diameter of 0.16±0.005mm and twist them together to form a power cord using a 500-type copper stranding machine; S4: Select step S2 to wrap a layer of red PP material around the power cord to form an outer diameter of 1.6±0.05mm. Use a 50mm ultra-fine extruder to form red insulation C. S5: Select 52 tin-plated copper wires with a diameter of 0.08±0.005mm, add a 250D nylon wire, and twist them together to form the power ground. Use a 500-type copper stranding machine to form wire D; S6: Select insulation A and insulation B from step S3, insulation C from step S4, and wire D from step S5, and add 4 strands of 1000D bulletproof wire to form a cable; wrap the cable with a layer of 30U 20mm double-sided conductive aluminum foil as a shielding layer; use a 1000# untwisting machine. S7: Select the wire from step S6, and braid an outer layer of 16 / 9 / 0.1±0.005mm TC using a high-speed braiding machine; S8: Select step S7 to extrude a layer of PVC material as the outer sheath layer. Use a 75mm PVC-specific extruder. During the extrusion process, a non-contact laser diameter gauge is used to measure the outer diameter. A bump tester is used to detect the position of bumps and depressions on the wire to ensure that the wire surface is smooth and uniform. A spark tester is used to detect whether there is any damage on the surface of the wire to ensure the quality of the sheath layer. A sorting and counting device is used during the testing process.

[0006] S9: Select step S8 and add 8 / 4 / 150D black twisted polyester yarn + 8 / 4 / 150D white twisted polyester yarn to increase the yarn's resistance to swaying and its novel appearance.

[0007] Preferably, the sorting and counting device includes a base, four rotating devices are evenly arranged between the bases, a drive motor is fixed on the left side of the base, the drive motor is connected to a drive rod, the drive rod passes through the rotating devices, a feeding mechanism is provided on one side of the base, and a discharging mechanism is provided on the other side of the base.

[0008] Preferably, the rotating device includes a rotating disk with a driven gear inside. The driven gear drives a driving disk. The driving disk has a three-quarter circular structure with an extension rod in the remaining quarter. The driving disk is fixed to the driving rod. A driven block is also provided at the center of the rotating disk. The driven block has an inner arc structure on its outer side and slide grooves around its perimeter. The slide grooves match the extension rod. The driven block is movably fixed to a support rod and is fixedly connected to the rotating disk. The driven block drives the rotating disk to rotate. The rotating disk is evenly provided with four automatic clamping mechanisms, which match the feeding mechanism and the unloading mechanism.

[0009] Preferably, the feeding mechanism includes a height adjustment seat, one end of which is provided with a pressure plate, and the height of the height adjustment seat is slightly higher than the center of the rotating device.

[0010] Preferably, the automatic clamping mechanism includes an eccentric ellipse, and four sets of clamps are evenly arranged on the rotating disk. The clamps are movably fixed to the rotating disk by fixing feet. One end of the clamp is a hook-shaped structure and the other end is a spherical structure. One side of the spherical structure of the clamp is in contact with the eccentric ellipse, and a spring is provided between the clamp and the fixing feet.

[0011] Preferably, the feeding mechanism includes a guide rod, which is rotatably fixed to the support rod of the rotating device. A lever is also provided on the rightmost rotating disk, which matches the guide rod. A torsion spring is provided inside the guide rod, so that the guide rod can automatically return to its original position after being moved by the lever. A counter is provided on the guide rod.

[0012] In summary, the present invention has at least one of the following beneficial technical effects: The present invention discloses a new cable structure and manufacturing method, which adopts double-layer extrusion. The first layer is made of transparent PP material and the second layer is made of colored PP material. This can ensure the stability of the cable's OD and also make the color distinguishable, thus meeting the requirements of 10ft high-frequency signal transmission.

[0013] The sorting and counting device in the production process of this invention can automatically separate individual wires from a bundle of packaged and transported wires by setting a rotating device, and count their quantity at the same time. This ensures that the wires can be separated individually before proceeding to the next process, avoiding the difficulties of manual sorting caused by the wires getting tangled together during transportation and packaging. The use of automatic sorting device can also save manpower and material resources, improve work efficiency and reduce operating costs. Attached Figure Description

[0014] Figure 1 This is an overall schematic diagram of the sorting and counting device of the present invention; Figure 2 This is a schematic diagram of the rotating device structure of the present invention; Figure 3 This is a schematic diagram of the automatic clamping mechanism of the present invention; Figure 4 This is a schematic diagram of the feeding mechanism and the unloading mechanism of the present invention.

[0015] Reference numerals in the attached drawings: 1 base, 2 rotating device, 201 rotating disk, 202 driven gear, 203 drive disk, 204 extension rod, 205 driven block, 206 slide groove, 207 support rod, 3 drive motor, 4 drive rod, 5 feeding mechanism, 501 height adjustment seat, 502 pressure plate, 6 unloading mechanism, 601 guide rod, 602 lever, 7 automatic clamping mechanism, 701 eccentric ellipse, 702 clamp, 703 fixed foot, 704 spring. Detailed Implementation

[0016] The above-mentioned objective of this invention is achieved through the following technical solutions: Example 1: A method for manufacturing a USB cable that supports 10ft signal transmission, comprising the following steps: S1: Select 7 tin-plated copper wires with a diameter of 0.203±0.005mm and twist them together to form a signal transmission wire using a 400-type ultra-fine copper stranding machine; S2: Select the signal transmission wire obtained in step S1, and wrap it with a double layer of PP insulation. The inner layer is transparent and the outer layer is green and white to form a signal wire with an outer diameter of 1.68±0.05mm. Use a 50mm ultra-fine extrusion machine to form green insulation A and green insulation B. S3: Select 41 tin-plated copper wires with a diameter of 0.16±0.005mm and twist them together to form a power cord using a 500-type copper stranding machine; S4: Select the power cord from step S3, wrap a layer of red PP material around the power cord to form an outer diameter of 1.6±0.05mm, and use a 50mm ultra-fine extruder to form red insulation C; S5: Select 52 tin-plated copper wires with a diameter of 0.08±0.005mm, add a 250D nylon wire, and twist them together to form a power ground wire. Use a 500-type copper stranding machine to form wire D; S6: Select insulation A and insulation B from step S2, insulation C from step S4, and wire D from step S5, and add 4 1000D bulletproof wires to twist them into a cable; wrap the cable with a layer of 30U 20mm double-sided conductive aluminum foil as a shielding layer; use a 1000# untwisting machine. S7: Select the wire from step S6, and braid an outer layer of 16 / 9 / 0.1±0.005mm TC using a high-speed braiding machine; S8: Select the wire obtained in step S7, and extrude a PVC sheath layer on the outside of the wire. Use a 75mm PVC-specific extruder. During the extrusion process, a non-contact laser diameter gauge is used to measure the outer diameter. A bump tester is used to detect the position of bumps and depressions on the wire to ensure that the wire surface is smooth and uniform. A spark tester is used to detect whether there is any damage on the surface of the wire to ensure the quality of the sheath layer. A sorting and counting device is used during the testing process.

[0017] S9: Select the wire obtained in step S8, and add 8 / 4 / 150D black twisted polyester yarn + 8 / 4 / 150D white twisted polyester yarn to increase the wire's resistance to swaying and the novelty of the wire's appearance. Preferably, the sorting and counting device includes a base, four rotating devices are evenly arranged between the bases, a drive motor is fixed on the left side of the base, the drive motor is connected to a drive rod, the drive rod passes through the rotating devices, a feeding mechanism is provided on one side of the base, and a discharging mechanism is provided on the other side of the base.

[0018] Preferably, the rotating device includes a rotating disk with a driven gear inside. The driven gear drives a driving disk. The driving disk has a three-quarter circular structure with an extension rod in the remaining quarter. The driving disk is fixed to the driving rod. A driven block is also provided at the center of the rotating disk. The driven block has an inner arc structure on its outer side and slide grooves around its perimeter. The slide grooves match the extension rod. The driven block is movably fixed to a support rod and is fixedly connected to the rotating disk. The driven block drives the rotating disk to rotate. The rotating disk is evenly provided with four automatic clamping mechanisms, which match the feeding mechanism and the unloading mechanism.

[0019] Preferably, the feeding mechanism includes a height adjustment seat, one end of which is provided with a pressure plate, and the height of the height adjustment seat is slightly higher than the center of the rotating device.

[0020] Preferably, the automatic clamping mechanism includes an eccentric ellipse, and four sets of clamps are evenly arranged on the rotating disk. The clamps are movably fixed to the rotating disk by fixing feet. One end of the clamp is a hook-shaped structure and the other end is a spherical structure. One side of the spherical structure of the clamp is in contact with the eccentric ellipse, and a spring is provided between the clamp and the fixing feet.

[0021] Preferably, the feeding mechanism includes a guide rod, which is rotatably fixed to the support rod of the rotating device. A lever is also provided on the rightmost rotating disk, which matches the guide rod. A torsion spring is provided inside the guide rod, so that the guide rod can automatically return to its original position after being moved by the lever. A counter is provided on the guide rod.

[0022] Example 2: High-frequency characteristics of this cable were tested using high-frequency testing software with a USB 2.0 interface. The results are as follows: Test content: Differential characteristic impedance, Test content: latency difference Explanation: The difference between the two signal lines was measured as follows: 15.403 - 15.337 = 0.066ns = 66ps Test content: Propagation delay, Explanation: 13.512 - 0.44665 = 13.065 ns Test content: Attenuation, Subsequent testing results showed that the cable of this invention can both ensure the stability of the cable's OD (dual displacement) and allow for color differentiation, thus meeting the requirements for high-frequency signal transmission at 10ft.

[0023] Working principle: One end of a bundle of twisted wires is placed between the height adjustment seat 501 and the pressure plate 502. At this time, the height between the height adjustment seat 501 and the pressure plate 502 is consistent with the outer diameter of the wire. The wire is laid flat under the action of the height adjustment seat 501 and the pressure plate 502. The wire is then pushed to one side of the rotating disk 201 by the push block, at the hook-shaped structure. At this time, a single wire falls into the hook of the hook-shaped structure.

[0024] At this time, the drive motor 3 starts to work, and the drive motor 3 drives the drive disk 203 to start rotating. Since there are four rotating disks 201, the position of the extension rod 204 on each rotating disk 201 is different. This means that when the first rotating disk 201 is driven to rotate by the extension rod 204, the other three rotating disks 201 do not rotate at the same time. After rotating a quarter turn, the second rotating disk 201 is driven to rotate a quarter turn by the extension rod 204. After the drive rod 4 rotates one revolution, the four rotating disks 201 rotate a quarter turn at different times.

[0025] Since the four rotating disks 201 rotate a quarter turn at different times, when the first rotating disk 201 rotates, because the rotating disk 201 also contains clamps 702 and an eccentric ellipse 701 (which is positioned downwards), the four clamps 702 on the rotating disk 201 match the eccentric ellipse 701. The state of the four clamps 702 is different in different positions. When the clamp 702 is at the top, because the distance between the clamp 702 and the eccentric ellipse 701 is greater, the clamp is in an extended state under the action of the spring. At this time, one end of the hook structure will tighten inward, thus clamping the wire. When the clamp 702 is at the bottom, because of the presence of the eccentric ellipse 701, the clamp 702 is in a compressed state, so the hook structure will extend outward, thus ending the clamping of the wire. This device, because the four rotating disks 201 rotate at different times... Therefore, when the first rotating disk 201 rotates and clamps the wire, the wire will be pulled, so that the rear end of the wire continues to hang on the second rotating disk 201 to be rotated. Thus, the second rotating disk 201 clamps different segments of the same wire during the rotation process, pulling the wire out of the wire pile until all four rotating disks 201 have rotated a quarter turn. After that, they continue to rotate. The clamp 702 on the right side of the rotating disk 201 continues to clamp individual wires from the wire pile, while the clamp 702 on the left side will release its grip on the wire under the action of the eccentric ellipse 701 after the rotating disk 201 rotates. At this time, the wire will fall on the guide rod 601. At the same time, the fourth rotating disk 201 is also equipped with a lever 602. When the fourth rotating disk 201 rotates, it will drive the lever 602 to rotate together. At this time, the lever will press down the guide rod 601, so that the wire on the guide rod falls into the processing area below.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for manufacturing a USB cable that supports 10ft signal transmission, characterized in that: Includes the following steps: S1: Select 7 tin-plated copper wires with a diameter of 0.203±0.005mm and twist them together to form a signal transmission wire using a 400-type ultra-fine copper stranding machine; S2: Select the signal transmission wire obtained in step S1, and wrap it with a double layer of PP insulation. The inner layer is transparent and the outer layer is green and white, forming a signal wire with an outer diameter of 1.68±0.05mm. Use a 50mm ultra-fine extruder to form green insulation A and green insulation B. S3: Select 41 tin-plated copper wires with a diameter of 0.16±0.005mm and twist them together to form a power cord using a 500-type copper stranding machine; S4: Select the power cord from step S3, wrap a layer of red PP material around the power cord to form a power cord with an outer diameter of 1.6±0.05mm, and use a 50mm ultra-fine extruder to form red insulation C; S5: Select 52 tin-plated copper wires with a diameter of 0.08±0.005mm, add a 250D nylon wire, and twist them together to form a power ground wire. Use a 500-type copper stranding machine to form wire D; S6: Select insulation A and insulation B from step S2, insulation C from step S4, and wire D from step S5, and add 4 1000D bulletproof wires to twist them into a cable; wrap the cable with a layer of 30U 20mm double-sided conductive aluminum foil as a shielding layer; use a 1000# untwisting machine. S7: Select the wire from step S6, and braid an outer layer of 16 / 9 / 0.1±0.005mm TC using a high-speed braiding machine; S8: Select the wire obtained in step S7, and extrude a PVC sheath layer on the outside of the wire. Use a 75mm PVC-specific extruder. During the extrusion process, a non-contact laser diameter gauge is used to measure the outer diameter. A bump tester is used to detect the position of bumps and depressions on the wire to ensure that the wire surface is smooth and uniform. A spark tester is used to detect whether there is any damage on the surface of the wire to ensure the quality of the sheath layer. A sorting and counting device is used during the testing process. S9: Select the wire obtained in step S8, and add 8 / 4 / 150D black twisted polyester yarn + 8 / 4 / 150D white twisted polyester yarn to increase the wire's resistance to swaying and the novelty of the wire's appearance. The sorting and counting device includes a base (1), four rotating devices (2) are evenly arranged between the two bases (1), a drive motor (3) is fixed on the left side of the base (1), the drive motor (3) is connected to a drive rod (4), the drive rod (4) passes through the rotating device (2), a feeding mechanism (5) is provided on one side of the base (1), and a discharging mechanism (6) is provided on the other side of the base (1); the rotating device (2) includes a rotating disk (201), a driven gear (202) is provided inside the rotating disk (201), the driven gear (202) also drives a drive disk (203), the drive disk (203) is a three-quarter circular structure, and an extension rod is provided in the remaining quarter of the disk (203). 204), the drive disk (203) is fixed on the drive rod (4), and a driven block (205) is also provided at the center of the rotating disk (201). The outer side of the driven block (205) is an inner arc structure, and a slide groove (206) is provided around it. The slide groove (206) matches the extension rod (204). The driven block (205) is movably fixed on the support rod (207). The driven block (205) is fixedly connected to the rotating disk (201). The driven block (205) drives the rotating disk (201) to rotate. The rotating disk (201) is evenly provided with four automatic clamping mechanisms (7). The automatic clamping mechanism (7) matches the feeding mechanism (5) and the unloading mechanism (6).

2. The method for manufacturing a USB cable that satisfies 10ft signal transmission according to claim 1, characterized in that: The feeding mechanism (5) includes a height adjustment seat (501), one end of which is provided with a pressure plate (502), and the height of the height adjustment seat (501) is slightly higher than the center of the rotating device (2).

3. The method for manufacturing a USB cable that satisfies 10ft signal transmission according to claim 1, characterized in that: The automatic clamping mechanism (7) includes an eccentric ellipse (701). Four sets of clamps (702) are evenly arranged on the rotating disk (201). The clamps (702) are movably fixed on the rotating disk (201) by fixing feet (703). One end of the clamp (702) is a hook-shaped structure and the other end is a spherical structure. One side of the spherical structure of the clamp (702) is in contact with the eccentric ellipse (701). A spring (704) is provided between the clamp (702) and the fixing feet (703).

4. The method for manufacturing a USB cable that satisfies 10ft signal transmission according to claim 1, characterized in that: The feeding mechanism (6) includes a guide rod (601), which is rotatably fixed on the support rod (207) of the rotating device (2). A lever (602) is also provided on the rightmost rotating disk (201). The lever (602) matches the guide rod (601). A torsion spring is provided inside the guide rod (601) so that the guide rod can automatically return to its original position after being moved by the lever. A counter is provided on the guide rod.

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