Wire rod straightening tool

Abstract

The utility model discloses a kind of wire rod straightening tool, it includes wire cluster fixed group and core wire straightening group, and the through hole for wire cluster positioning is equipped on wire cluster fixed group, core wire straightening group includes the disc surface of rotatable and the through hole coaxial distribution on wire cluster fixed group, disc surface outer ring is equipped with multiple core wire positioning member for fixed core wire, by rotating disc surface, make compacting sliding block in positioning member track along radial direction moves, cooperate reset spring to realize the automatic opening and closing of core wire positioning mouth, tool structure is compact, it is labor-saving to operate, it is applicable to the efficient straightening and fixed of multiple specifications wire rod, entire operating process does not need tool auxiliary, single person can complete the clamping and positioning of multiple wire rods, significantly improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wire harness connector production equipment, specifically to a wire straightening fixture used to break up multi-core cables. Background Technology

[0002] As wire harness connectors carry increasingly more information, the cables they connect to are becoming thicker, and the number of internal cores is also increasing. In general cable production, the cores are often twisted and bundled together, with each core spiraling together. Therefore, in wire harness connector production, before connecting each core to the connector terminal, the cores must first be separated and straightened. Traditional manual separation methods are inefficient and easily damage the cores, making them unsuitable for the assembly requirements of high-density cables. Therefore, it is necessary to develop and design simple wire straightening fixtures to achieve rapid cable fixing and tensioning of each core, thereby improving the production efficiency of wire harness connectors. Patent application 202320010368.0 proposes an automatic multi-core wire separating and shaping device. Through detailed electromechanical design and the cooperation of multiple cylinders, it can automatically separate and shape multi-core cables, and straighten and correct the cores. However, its complex structure and high cost make it unsuitable for widespread use by small and medium-sized enterprises. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a wire straightening fixture with a simple structure and easy operation, which is required to effectively realize the rapid separation of multi-core cables and the tensioning and straightening of single core wires, thereby reducing production costs and improving work efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: A wire straightening fixture includes a wire cluster fixing group and a core wire straightening group. The wire cluster fixing group is provided with through holes for positioning the wire clusters. The core wire straightening group includes a rotatable disk surface. The disk surface and the through holes are coaxially distributed. A plurality of core wire positioning elements are provided on the outer ring of the disk surface.

[0005] Preferably, the outer edge of the disc surface is provided with a circular guide rail that mates with and is concentric with the disc surface, the disc surface is detachably embedded in the circular guide rail, the circular guide rail is fixedly mounted on the support platform, and the disc surface is connected to a crank for controlling the rotation of the disc surface.

[0006] Preferably, the circular guide rail has a notch, and the notch has an openable first pressure cover adapted to the notch. The core wire positioning component includes a core wire positioning port and a pressing slider that moves radially along the disc surface. When the pressing slider is inside the circular guide rail, it presses the core wire positioning port. When the pressing slider slides into the notch, it releases the core wire positioning port.

[0007] Preferably, the inner wall of the core wire positioning port is provided with a deformable polyurethane pad.

[0008] Preferably, the disc surface includes a central support base and core wire positioning elements evenly distributed on the outer edge of the support base. A return spring is provided between the pressing slider and the support base. A positioning element track is provided on the disc surface corresponding to each core wire positioning element. A limiting mechanism is also provided on the positioning element track to limit the movement of the pressing slider.

[0009] Preferably, the limiting mechanism consists of a positioning pin protruding on the side wall of the pressing slider and a through linear positioning hole provided on the side wall of the positioning component track. The axis of the positioning pin is perpendicular to the plane where the disk surface is located. The number of positioning pins is the same as the number of positioning holes, and the positioning pin is inserted into the positioning hole.

[0010] Preferably, the support base and the crank pin of the crank are coaxially and detachably connected, and a bearing seat is provided near the disc surface. The bearing seat has a mounting hole, and the crank pin is installed in the mounting hole through the bearing.

[0011] Preferably, the through hole is formed by combining a wire bunch groove and an openable second pressure cap, and the inner side of the through hole is provided with a silicone layer to increase friction and compress the wire bunch.

[0012] Preferably, a strong magnet is provided inside the first or second pressure cover to allow the cover to be popped open.

[0013] The aforementioned structural design utilizes a crank to rotate the disc, causing the clamping slider to move radially within the positioning track. This, combined with a return spring, automatically opens and closes the core wire positioning port. When the disc rotates to the notch position, the clamping slider enters the notch area, and the core wire positioning port automatically releases under the action of the return spring, facilitating quick loading and unloading of wires. During rotation, the polyurethane pad deforms under pressure, ensuring stable clamping of core wires of different diameters. A powerful magnet design allows the first or second pressure cap to automatically spring open during operation, enhancing ease of use. The entire fixture is compact, labor-saving, and suitable for the efficient straightening and fixing of multiple wire specifications. The entire operation requires no tools, allowing a single person to clamp and position multiple wires, significantly improving work efficiency. Attached Figure Description

[0014] Figure 1 This is a perspective view of an embodiment of the present utility model; Figure 2 This is a perspective view of the core wire straightening assembly of this utility model; Figure 3 This is a side view of an embodiment of the present utility model; Figure 4 This is a schematic diagram of the internal structure of the disc surface of this utility model; Figure 5 This is a schematic diagram of the structure of the disc surface of this utility model; Figure 6 This is a schematic diagram of the combined structure of the disc and the pressing slider of this utility model. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] To improve the production efficiency of wire harness connectors and simplify the straightening process of the wires used in connectors, a wire straightening fixture is designed, comprising a wire bundle fixing group and a core wire straightening group. The wire bundle fixing group has through holes 1 for positioning the wire bundles. During straightening, the undisassembled cables are fixed inside the through holes 1. The core wire straightening group includes a rotatable disc 2, which is coaxially distributed with the through holes 1. Multiple core wire positioning elements 3 are provided on the outer ring of the disc 2. The dispersed core wires are fixed on their respective positioning elements 3. By rotating the disc 2, the core wires are tensioned and straightened one by one. In this embodiment, a cable with 8 pairs of core wires twisted together is used. Eight core wire positioning elements 3 are evenly distributed on the disc 2, with one positioning element 3 corresponding to each pair of core wires. The positioning elements 3 have elastic elements inside to clamp and fix the core wires. Rotating the disc 2 causes the core wires to gradually disperse and straighten one by one, avoiding tangling and completing the core wire straightening.

[0017] Specifically, the outer edge of the disc 2 is also equipped with a concentric circular guide rail 4 that mates with the disc 2. The circular guide rail 4 is fixedly installed on the support platform 5. The circular guide rail 4 is used to constrain the rotation trajectory of the disc 2, ensuring that the tension of the core wire is evenly distributed during rotation and avoiding damage to the core wire due to uneven force caused by eccentric rotation. The disc 2 is detachably embedded in the circular guide rail 4 and is connected to a crank 6 for controlling the rotation of the disc 2. Different discs 2 can be replaced according to different numbers of core wires. Different discs 2 are equipped with different numbers of core wire positioning parts 3. The detachable design makes the equipment suitable for the straightening needs of various specifications of cables, improving the versatility of the tooling. The crank 6 is a drive handle used to drive the disc 2 to rotate. By manually operating the crank 6, the disc 2 is slowly rotated to achieve gradual tensioning and straightening of the core wire. Furthermore, a drive device such as a motor can also be set to achieve rotation, and the disc 2 can be rotated through gear transmission. By controlling the rotation angle of the disc 2 through the drive device, it can be ensured that each core wire is tensioned in place in sequence, achieving precise straightening.

[0018] The circular guide rail 4 has a notch 7, and a first pressure cap 8 that is adapted to the notch 7 is provided. Each core wire positioning component 3 on the disk surface 2 includes a core wire positioning port 9 and a pressing slider 10 that moves radially along the disk surface 2. When the first pressure cap 8 is pressed closed, all the pressing sliders 10 are limited inside the circular guide rail 4, squeezing the core wire positioning port 9, so that each pair of core wires is tightly fixed at the core wire positioning port 9. When the first pressure cap 8 is opened, the core wire positioning component 3 corresponding to the position of the notch 7 is in a loosened state. When the pressing slider 10 slides outward into the notch 7, the core wire positioning port 9 is released, and the core wire can easily enter and exit the core wire positioning port 9. The inner wall of the core wire positioning port 9 is provided with a deformable polyurethane pad 24. The polyurethane pad 24 undergoes elastic deformation after being pressed, tightly covering the surface of the core wire, thereby increasing the friction to prevent the core wire from sliding, while avoiding damage to the core wire insulation layer. The radial sliding of the pressing slider 10 is achieved as follows: the disk surface 2 includes a central support base 11 and core wire positioning components 3 evenly distributed on the outer edge of the support base 11. Each core wire positioning component 3 includes a core wire positioning port 9 and a pressing slider 10 that moves radially along the disk surface 2. A return spring 12 is provided between the pressing slider 10 and the support base 11. The pressing slider 10 slides radially towards the center under external force or centrifugally under the action of the return spring 12. A positioning component track 13 is provided on the disk surface 2 for each core wire positioning component 3. The positioning component tracks 13 are distributed in a ring on the outer ring of the disk surface 2. The positioning component tracks 13 are mainly used to cooperate in installing the pressing slider 10. In this embodiment, the positioning component tracks 13 are multiple radial square grooves distributed on the disk surface 2, and the pressing slider 10 is inserted into the square grooves. The pressing slider 10 compresses the core wire positioning port 9 through the following mechanism: the pressing slider 10 includes a slider body 25, with a pressing block 26 protruding from the side of the slider body 25. The positioning rail 13 and the chip positioning port 9 are connected. The pressing block 26 extends into the chip positioning port 9 from the square groove. When the pressing block 26 is away from the support base 11, the distance between the pressing block 26 and the polyurethane pad 24 is relatively large. When the pressing block 26 is close to the support base 11, the pressing block 26 is close to the polyurethane pad 24, thus achieving the compression and fixation of the core wire inside the core wire positioning port 9. Furthermore, a limiting mechanism is provided on the inner wall of the positioning rail 13 to limit the movement of the pressing slider 10. The limiting mechanism is mainly used to prevent the pressing slider 10 from popping out of the positioning rail 13 and detaching from the disk surface 2. In this embodiment, the limiting mechanism consists of a positioning pin 14 protruding from the side wall of the pressing slider 10 and a through linear positioning hole 15 provided on the side wall of the positioning rail 13. The axis of the positioning pin 14 is perpendicular to the plane where the disk surface 2 is located. The number of positioning pins 14 is the same as the number of positioning holes 15. The positioning pins 14 are inserted into the positioning holes 15 to prevent the pressing slider 10 from disengaging from the positioning rail 13 when it slides radially outward.The radial sliding of the clamping slider can also be achieved as follows: Instead of a dedicated positioning track on the disc surface, a relatively open internal space is used. A positioning ring is located on one side of the disc surface, used to mount the clamping slider. A limiting mechanism for radial movement of the clamping slider is located on the side of the positioning ring near the clamping slider. The limiting mechanism consists of ring-shaped positioning pins evenly distributed on the surface of the positioning ring, with the number of positioning pins equal to the number of clamping sliders. The clamping slider has linear positioning holes into which the positioning pins are inserted. The clamping slider is installed inside the disc surface and fixed in position by clamping it to the positioning ring on the other side of the disc surface. The positioning holes extend radially and slide in cooperation with the positioning pins. The cooperation between the positioning holes and positioning pins not only guides the sliding trajectory of the clamping slider but also prevents it from popping out of the disc surface. Furthermore, the stability of the clamping slider can be optimized through structural design, such as by mutual pressing between the clamping sliders or by incorporating appropriate rib structures within the disc surface. When an external force drives the clamping slider 10 to move centripetally, the positioning pin 14 slides radially within the positioning hole 15, constraining its movement trajectory and ensuring that each clamping slider 10 slides within the disc surface 2, thereby clamping the core wire positioning port 9. The return spring 12 is placed between the support base 11 and the clamping slider 10, providing centrifugal return force so that after the external force is released, the clamping slider 10 moves radially outward, no longer pressing the core wire positioning port 9, facilitating quick loading and unloading of the core wire.

[0019] The entire structure is compact and easy to operate, effectively ensuring stable clamping and uniform force distribution of the core wire during straightening. When installing the core wire, first open the first pressure cover 8. By rotating the crank 6, one of the core wire positioning pieces 3 on the disc 2 can be aligned with the notch 7. At this time, due to the action of the return spring 12, the core wire positioning piece 3 pops out from the notch 7, and the clamping slider 10 releases the core wire positioning port 9, allowing the core wire to be easily inserted or removed. After installation, rotating the crank 6 causes the popped-out clamping slider 10 to radially inward press and clamp the core wire, which then enters the circular guide rail 4. Simultaneously, the next core wire positioning piece 3 moves to the notch 7. Furthermore, the radially outward-facing side of the clamping slider 10 is designed as an arc surface. When the crank 6 drives the disc 2 to rotate, the protrusions on both sides of the notch 7 of the circular guide rail 4 can directly act on the arc surface, thereby pushing the clamping slider 10 inward and achieving automatic locking. The support base 11 and the crank 6 are coaxially and detachably connected by the crank pin. A bearing seat 16 is provided near the disc surface 2, and a mounting hole 17 is provided on the bearing seat 16. The crank pin is installed in the mounting hole 17 through the bearing 22. The crank 6 is fixed to the bearing seat 16 by the crank shaft and can rotate around its axis. The rotation of the crank 6 drives the disc surface 2 to rotate, causing the clamping slider 10 to move radially and gradually towards the center, thereby clamping the core wire. In this way, when the crank 6 rotates the disc surface 2 for one revolution, each core wire positioning component 3 completes the clamping action of the core wire in sequence, realizing uniform force in the circumference and ensuring that the core wire does not deviate or twist during the straightening process.

[0020] The through-hole 1 is formed by the assembly of the wire cluster groove 18 and the openable second pressure cover 19. A silicone layer 23 is provided inside the through-hole 1 to increase friction and press the wire cluster. Furthermore, a strong magnet 20 is installed inside the first pressure cover 8 or the second pressure cover 19 to allow the cover to spring open. Both the first and second pressure covers 8 and 19 are equipped with corresponding locking elements 21. The locking elements 21 fix the first and second pressure covers 8 and 19, ensuring stable positioning of the cable within the wire cluster groove 18. Each pair of core wires is stably installed within all the core wire positioning elements 3 located inside the circular guide rail 4, forming a compact and stable structure. After the wire straightening process is completed, the first and second pressure covers 8 and 19 can be opened sequentially, and the locking elements 21 can be released. Under the action of the strong magnet 20, the first and second pressure covers 8 and 19 quickly pop out, facilitating the quick removal of the straightened cable. Rotating the crank 6 causes the disc 2 to rotate in the opposite direction, and each pressing slider 10 gradually retracts centrifugally under the action of the return spring 12. The core wire positioning ports 9 release the core wires sequentially, facilitating the next round of operation. The entire disassembly process is smooth and efficient, requiring no additional force, which significantly improves the work pace and operational safety.

[0021] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any changes or modifications made in accordance with the claims and description of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. A wire straightening tool, characterized by: It includes a wire cluster fixing group and a core wire straightening group. The wire cluster fixing group is provided with through holes for wire cluster positioning. The core wire straightening group includes a rotatable disk surface. The disk surface and the through holes are coaxially distributed. The outer ring of the disk surface is provided with multiple core wire positioning components.

2. The wire straightening tool of claim 1, wherein: The outer edge of the disc is provided with a circular guide rail that mates with and is concentric with the disc surface. The disc surface is detachably embedded in the circular guide rail. The circular guide rail is fixedly installed on the support platform. The disc surface is connected to a crank for controlling the rotation of the disc surface.

3. The wire straightening fixture according to claim 2, characterized in that: The circular guide rail has a notch, and the notch has an openable first pressure cover that is adapted to the notch. The core wire positioning component includes a core wire positioning port and a pressing slider that moves radially along the disc surface. When the pressing slider is inside the circular guide rail, it squeezes the core wire positioning port. When the pressing slider slides into the notch, it releases the core wire positioning port.

4. The wire straightening tool of claim 3, wherein: The inner wall of the core wire positioning port is provided with a deformable polyurethane pad.

5. The wire straightening tool of claim 3, wherein: The disc includes a central support base and core wire positioning components evenly distributed on the outer edge of the support base. A return spring is provided between the pressing slider and the support base. A positioning component track is provided on the disc for each core wire positioning component. A limiting mechanism is also provided on the positioning component track to limit the movement of the pressing slider.

6. The wire straightening tool of claim 5, wherein: The limiting mechanism consists of a positioning pin protruding from the side wall of the pressing slider and a through linear positioning hole provided on the side wall of the positioning component track. The axis of the positioning pin is perpendicular to the plane where the disk surface is located. The number of positioning pins is the same as the number of positioning holes, and the positioning pin is inserted into the positioning hole.

7. The wire straightening tool of claim 5, wherein: The support base and the crank pin of the crank are coaxially and detachably connected. A bearing seat is provided near the disc surface. The bearing seat has a mounting hole, and the crank pin is installed in the mounting hole through the bearing.

8. The wire straightening tool of claim 1, wherein: The through hole is formed by combining a wire bunch groove and an openable second pressure cap, and the inside of the through hole is provided with a silicone layer to increase friction and compress the wire bunch.

9. The wire straightening tool of claim 3, wherein: The first pressure cap is equipped with a powerful magnet that can spring the cap open.

10. The wire straightening tool of claim 8, wherein: The second pressure cap is equipped with a powerful magnet that can spring the cap open.

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