A type of shaft-type welding mold

Abstract

This utility model discloses a snap-shaft type welding mold, which includes a main frame and multiple sets of detachable wire harness clamping teeth snapped onto the main frame. Two parallel snap-shafts are provided on both sides of the main frame for snapping the wire harness clamping teeth. The wire harness clamping teeth span across the snap-shafts, and both ends of the wire harness clamping teeth are respectively snapped onto the two snap-shafts. The surface of the snap-shafts is coated with a layer of micro-elastic rubber sleeve for stabilizing the snapping. This utility model, through the design of detachable wire harness clamping teeth and snap-shafts, reduces the need for multiple sets of molds, avoids core wire positioning deviation caused by frequent disassembly and assembly, and improves snapping stability through the micro-elastic rubber sleeve design. It has the advantages of reducing the number of molds, lowering production costs, improving welding positioning accuracy, and enhancing operational convenience.

Description

Technical Field

[0001] This utility model relates to the field of wire harness connector production mold application, specifically to a shaft-type welding mold used for core wire welding. Background Technology

[0002] In the manufacturing process of wire harness connectors, as the number of internal core wires increases, a row-by-row soldering method is typically used to optimize the distribution of the core wires inside the connector. In existing technologies, the circuit board and core wire positions need to be fixed separately during soldering. Since soldering multiple rows of core wires requires step-by-step operations, multiple sets of soldering molds need to be developed. In practice, the soldering process is often designed to be broken down into multiple steps. A corresponding soldering mold needs to be installed for each row of core wires being soldered, and after completing one row, the current mold needs to be removed and replaced with the next mold to continue soldering. This method of alternating use of multiple molds has significant drawbacks: on the one hand, developing multiple sets of molds for the same product increases production costs and inventory management difficulties; on the other hand, frequent mold disassembly and assembly can easily lead to installation deviations, resulting in inaccurate core wire positioning, affecting soldering quality and product consistency. Especially for connectors in high-speed transmission cables, to ensure the data transmission volume of the wire harness, high-precision positioning and arrangement of the internal multi-core wires are required. For multi-row core wire soldering operations requiring precise positioning, existing technologies struggle to simultaneously meet the requirements of ease of operation and positioning accuracy. In addition, existing molds also have problems such as cumbersome operation and unstable fixation when fixing circuit boards, and are prone to displacement during the welding process. To address these issues, it is necessary to develop suitable welding molds for connectors with multiple rows of core wires. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a ferrule-type welding mold suitable for welding multiple rows of core wires. This mold has the advantages of reducing the number of molds, reducing production costs, improving welding positioning accuracy and ease of operation.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is:

[0005] A type of snap-on welding mold includes a main frame and multiple sets of detachable wire harness crimping teeth snapped onto the main frame. Two parallel snap-on shafts are provided on both sides of the main frame for snapping the wire harness crimping teeth. The wire harness crimping teeth are connected across the snap-on shafts, and the two ends of the wire harness crimping teeth are snapped onto the two snap-on shafts respectively. The surface of the snap-on shafts is coated with a layer of micro-elastic rubber sleeve for stabilizing the snapping.

[0006] Preferably, the main body frame has parallel snap-fit ​​shafts on both sides of its front and back.

[0007] Ideally, the snap-fit ​​shaft can accommodate multiple sets of wire harness crimping teeth simultaneously.

[0008] Preferably, the wire harness crimping teeth are provided with snap-fit ​​grooves at both ends that mate with the snap-fit ​​shaft.

[0009] Preferably, the main frame is provided with a fixing structure for fixing the circuit board.

[0010] Preferably, the main frame includes two snap-fit ​​posts on both sides and a mounting post connecting the two snap-fit ​​posts, the snap-fit ​​posts and the mounting post forming a semi-frame structure; the fixing structure is a quick-clamping structure, the mounting post is provided with a base for mounting the circuit board, a pressure plate is hinged on the base, and a handle extends from each end of the pressure plate, the end of the handle is detachably snapped onto the snap-fit ​​post.

[0011] Preferably, the inner side of the locking post is provided with a lateral ball clamping member that limits the position of the handle.

[0012] Preferably, the wire harness crimping teeth have buffer slots at both ends to make it easier for the wire harness crimping teeth to engage with the clamping shaft.

[0013] By adopting the above solution, this utility model reduces the need for multiple sets of molds and avoids core wire positioning deviation caused by frequent disassembly and assembly due to the design of detachable wire harness pressure teeth and snap-fit ​​shaft. At the same time, the design of micro-elastic rubber sleeve improves snap-fit ​​stability. It has the advantages of reducing the number of molds, reducing production costs, improving welding positioning accuracy and operation convenience. Attached Figure Description

[0014] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0015] Figure 2 This is a top view of an embodiment of the present utility model;

[0016] Figure 3 This is a perspective view of another embodiment of the present utility model;

[0017] Figure 4 This is a bottom view of an embodiment of the present utility model;

[0018] Figure 5 This is a side view of an embodiment of the present utility model;

[0019] Figure 6 yes Figure 5 The illustrated embodiment is a cross-sectional view along line AA;

[0020] Figure 7 This is a perspective view of the wire harness crimping teeth according to an embodiment of this utility model;

[0021] Figure 8 This is a side view of the wire harness crimping teeth according to an embodiment of the present invention;

[0022] Figure 9 This is a schematic diagram of the structure of the snap-fit ​​shaft according to an embodiment of the present invention. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] To simplify the process of welding wire cores in wire harness connectors and to streamline the design and development of welding molds, this invention proposes a snap-fit ​​welding mold. The mold includes a main frame 1 and multiple sets of detachable wire harness clamping teeth 2 snapped onto the main frame 1. A snap-fit ​​shaft 3 is fixed to the main frame 1, which serves as the primary support structure for the snap-fit ​​shaft 3 and the wire harness clamping teeth 2. The main frame 1 can be constructed using aluminum alloy profiles to provide a stable mounting reference. The wire harness clamping teeth 2 are positioning components with wire grooves 4, which can be injection molded from nylon. The wire harness clamping teeth 2 and the main frame 1 are connected via a snap-fit ​​mechanism for quick assembly and disassembly. The wire harness clamping teeth 2 are snapped onto the snap-fit ​​shaft 3 mounted on the main frame 1. During welding, multiple sets of wire harness clamping teeth 2 are installed according to the arrangement requirements of the core wires 7. Specifically, the main frame 1 has two parallel clamping shafts 3 on both sides for clamping the wire harness crimp teeth 2. The clamping shafts 3 are generally cylindrical positioning rods, which can be made of stainless steel or plastic tubing. Their parallel arrangement ensures that the installation direction of the wire harness crimp teeth 2 is consistent. The wire harness crimp teeth 2 are connected across the clamping shafts 3, and both ends of the wire harness crimp teeth 2 are respectively clamped onto the two clamping shafts 3. The surface of the clamping shafts 3 is coated with a layer of micro-elastic rubber sleeve 5 for stabilizing the clamping. The micro-elastic rubber sleeve 5 covering the surface of the clamping shafts 3 can be made of silicone material. It compensates for the assembly gap through the micro-deformation of the rubber sleeve, ensuring that the wire harness crimp teeth 2 do not loosen. At the same time, the micro-elastic rubber sleeve 5 on the surface can enhance the friction and prevent the wire harness crimp teeth 2 from sliding on the clamping shafts 3.

[0025] During soldering, it is necessary to restrict the displacement of the circuit board 6. By fixing the relative position between the circuit board 6 and the core wires 7 on the circuit board 6, stable soldering of the core wires can be achieved. The circuit board 6 and the mechanism for fixing the core wires can be fixed to a third-party stabilizing mechanism, respectively. Alternatively, as in this embodiment, a fixing structure for fixing the circuit board 6 can be provided on the main frame 1, thereby directly fixing the circuit board 6 to the main frame 1. Specifically, the main frame 1 includes two snap-fit ​​posts 8 on both sides and mounting posts 9 connecting the two snap-fit ​​posts 8. The snap-fit ​​posts 8 and mounting posts 9 form a semi-frame structure. The snap-fit ​​posts 8 are set on both sides of the main frame 1 as the main support structure for mounting the snap-fit ​​shaft 3. They can be square column structures made of metal. The mounting posts 9 are support members that connect the snap-fit ​​posts 8 on both sides laterally. Specifically, they can be made of the same material as the snap-fit ​​posts 8 and are used to form a semi-frame structure to support the circuit board 6. To simplify the installation process of circuit board 6, a quick-clamping structure can be selected as the fixing structure. The mounting post 9 is equipped with a base 10 for mounting circuit board 6. A pressure plate 11 is hinged to the base 10, with a handle 12 extending from each end of the pressure plate 11. The ends of the handles 12 are detachably engaged with the locking posts 8. In use, the fixing structure can be opened by raising the handles 12. After placing the circuit board 6 on the base 10, the pressure plate 11 is pressed down to a horizontal position, and the ends of the handles 12 are locked by the locking posts 8, thus clamping and fixing the circuit board 6.

[0026] Furthermore, a lateral ball clamping member is provided inside the locking post 8 to limit the position of the handle 12. The lateral ball clamping member refers to a spring-loaded ball structure located inside the locking post 8. Specifically, it can be implemented using a combination of stainless steel balls and compression springs. The ball protrudes inward from the locking post 8 under the spring's thrust, forming an elastic clamp by contacting the end of the handle 12. Furthermore, a recess for engaging the lateral ball clamping member can be provided at the fixing point where the end of the handle 12 engages with the locking post 8. When the handle 12 is locked by the locking post 8, the lateral ball clamping member protrudes inward and engages in the recess, applying lateral pressure to the end to limit displacement. When the end of the handle 12 is lifted, the inner wall of the recess compresses the lateral ball clamping member, allowing the spring to store force and squeezing the ball into the locking post 8. When the handle 12 leaves the locking post 8 or reaches the preset fixing point of the locking post 8, the ball pops out under the action of the spring and contacts the end of the handle 12, forming a lateral clamping force to prevent the handle 12 from sliding or shaking on the locking post 8. Through the elastic contact between the ball and the handle 12, the end of the handle 12 is stably fixed in a specific position on the locking post 8, preventing the handle 12 from loosening due to external force or vibration.

[0027] To accommodate the welding requirements of multiple rows of core wires, the clamping shaft 3 is designed to simultaneously accommodate multiple sets of wire harness clamping teeth 2. These multiple sets of clamping teeth 2 can be installed along the clamping shaft 3 to different workstations according to the actual distribution of the core wires 7, achieving synchronous fixing of multiple rows of core wires. Specifically, the clamping shaft 3 is designed with sufficient axial length to allow multiple sets of wire harness clamping teeth 2 to be arranged sequentially along the surface of the clamping shaft 3 and remain stable. For example, the length of the clamping shaft 3 can be set to 200 mm, and a single clamping shaft 3 can install, for example, 3-5 sets of wire harness clamping teeth 2. The spacing of each set of wire harness clamping teeth 2 can be adjusted according to the arrangement requirements of the core wires 7. During the welding process, multiple sets of wire harness clamping teeth 2 synchronously fix different rows of core wires 7, eliminating the need for step-by-step disassembly and replacement of the overall mold. Simply clamping the corresponding wire harness clamping teeth 2 before each welding step is sufficient to position the multiple rows of core wires 7.

[0028] Furthermore, to accommodate products where core wires need to be soldered on both sides of the circuit board, the main frame 1 is designed with parallel locking shafts 3 on both sides of its front and back. The front and back sides of the main frame 1 refer to its two symmetrical working surfaces. The main frame 1 adopts a double-sided mounting structure design, meaning that a set of locking shafts 3 is provided on each of the two working surfaces. Specifically, two parallel locking shafts 3 for locking the wire harness crimping teeth 2 are provided on both sides of each working surface. The wire harness crimping teeth 2 can be bridging the locking shafts 3 on either side. This double-sided mounting structure allows multiple wire harness crimping teeth 2 to be installed simultaneously on both sides of the circuit board 6, thereby increasing the number of core wire rows that can be processed in a single soldering operation. In this embodiment, both sides of the main frame 1 are provided with locking shafts 3 to accommodate the wire harness crimping teeth 2. One side can only accommodate one set of wire harness crimping teeth 2, while the other side can accommodate two sets of wire harness crimping teeth 2 simultaneously.

[0029] The wire harness clamping teeth 2 are toothed components used to clamp the core wires. They include a middle section that adapts to and clamps the core wires 7, and clamping sections on both sides of the middle section that adapt to the clamping shafts 3. A toothed groove 4 for clamping the core wires is provided on the middle section near the main frame 1. The outer surfaces 15 of the two clamping sections abut against the clamping shafts 3 on both sides. Compared to the traditional C-shaped clamping structure, the abutment from the sides facilitates the removal of the wire harness clamping teeth 2 from the main frame 1. Additionally, a lever 16 extends from the outer side of the clamping sections for applying force during removal. Furthermore, the wire harness clamping teeth 2 have clamping grooves 17 at both ends that mate with the clamping shafts 3. These are arc-shaped notches at the contact points between the clamping sections and the clamping shafts 3, allowing for mechanical engagement with the clamping shafts 3. The clamping grooves 17 increase the contact surface with the clamping shafts 3, thereby increasing the stability of the wire harness clamping teeth 2 during clamping.

[0030] Furthermore, to make it easier to press the wire harness crimping teeth 2 into the main frame 1, buffer slots are provided at both ends of the wire harness crimping teeth 2 to facilitate easier engagement with the clamping shaft 3. The buffer slots include a first buffer slot 18 parallel to the contact surface between the wire harness crimping teeth 2 and the clamping shaft 3, and a second buffer slot 19 perpendicular to the plane of the first buffer slot 18. During assembly and disassembly, the two buffer slots deform to facilitate smoother assembly and disassembly of the wire harness crimping teeth 2, and after assembly, they reset to ensure the stability of the mechanical fit between the wire harness crimping teeth 2 and the clamping shaft 3. Without the buffer slots, the rigid contact during assembly and disassembly of the wire harness crimping teeth 2 could easily lead to wear on the clamping shaft 3 or the wire harness crimping teeth 2. This solution, through the elastic deformation characteristics of the buffer slots, reduces the difficulty of assembly and disassembly, avoids component damage, and improves the reliability of the wire harness crimping teeth 2 for repeated use. The elastic compensation effect of the buffer slots ensures that the wire harness crimping teeth 2 are quickly and stably fixed on the clamping shaft 3, thereby reducing the number of mold changes during welding and improving the core wire positioning accuracy.

[0031] The above are merely preferred embodiments of the present utility model and do 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 card axis welding die characterized by: It includes a main frame and multiple sets of detachable wire harness crimping teeth that are snapped onto the main frame. The main frame has two parallel snapping shafts on both sides for snapping the wire harness crimping teeth. The wire harness crimping teeth are connected across the snapping shafts, and the two ends of the wire harness crimping teeth are snapped onto the two snapping shafts respectively. The surface of the snapping shafts is coated with a layer of micro-elastic rubber sleeve for stabilizing the snapping.

2. A rotary welding die according to claim 1 wherein: The main frame has parallel snap-fit ​​shafts on both sides of its front and back.

3. A rotary welding die as defined in claim 1 wherein: The snap-fit ​​shaft can accommodate multiple sets of wire harness crimping teeth at the same time.

4. A card axis welding die according to claim 1, wherein: The wire harness crimping teeth are provided with snap-fit ​​grooves at both ends that mate with snap-fit ​​shafts.

5. A card axis welding die according to claim 1 wherein: The main frame is equipped with a fixing structure for fixing the circuit board.

6. A rotary welding die according to claim 5 wherein: The main frame includes two snap-fit ​​posts on both sides and a mounting post connecting the two snap-fit ​​posts. The snap-fit ​​posts and the mounting post form a semi-frame structure. The fixing structure is a quick-clamping structure. The mounting post is equipped with a base for mounting the circuit board. A pressure plate is hinged on the base. A handle extends from each end of the pressure plate. The end of the handle is detachably snapped onto the snap-fit ​​post.

7. A shaft-type welding mold according to claim 6, characterized in that: The inner side of the snap-fit ​​post is provided with a lateral ball clamping component that limits the position of the handle.

8. A card axis welding die according to any one of claims 1-7, characterized in that: The wire harness crimping teeth have buffer slots at both ends to make it easier for the crimping teeth to engage with the clamping shaft.

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