A circular rod linkage telescopic structure for a wire harness terminal forming mold
The efficient extension and retraction of the round rod of the wire harness terminal forming mold is achieved through a mechanical linkage structure, which solves the problems of short lifespan and cumbersome adjustment of the round rod in traditional molds, reduces costs and extends the service life of the mold.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- EC PRECISION TECHJIANGSUCORP
- Filing Date
- 2025-06-10
- Publication Date
- 2026-06-30
AI Technical Summary
In traditional molds, the extension and retraction control of the round rod relies on a cylinder, which results in short lifespan, high cost, and cumbersome adjustment, making it difficult to achieve the required roundness of wire harness terminals.
The mechanical linkage structure is adopted, and the extension and retraction of the round rod is controlled by the upper die pressing down. It includes a combination of upper pressure block, swing arm, sliding seat and return spring to achieve efficient extension and retraction of the round rod.
It simplifies the control of the extension and retraction of the round rod, reduces production costs, extends the service life of the mold, and requires no additional adjustment.
Smart Images
Figure CN224424002U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of molds, specifically to a circular rod linkage telescopic structure for a wire harness terminal forming mold. Background Technology
[0002] Wire harness terminals are used to connect electrical components and wire harnesses to achieve current transmission. They are a fundamental component in automotive electrical design. Currently, the manufacturing process of automotive wire harness terminals generally uses copper or aluminum strips as raw materials. The strips are slowly fed into a continuous forming mold by a conveyor for processing. However, for some special wire harness terminals (such as...), the manufacturing process may require additional steps. Figure 1 As shown in the figure, after the overall stamping is completed, it needs to be continuously bent to form a closed ring. In order to ensure the roundness of the ring structure during the last bending process, a round rod is usually inserted during bending to ensure the overall roundness value after bending.
[0003] In traditional mold structures, the extension and retraction of the round rod is controlled by a cylinder. However, this method has many drawbacks. For example, continuous high-speed extension and retraction greatly shortens the life of the cylinder, requiring regular cylinder replacement, which increases production costs. In addition, in order to ensure that the round rod extends synchronously when the upper mold is pressed down, the extension and retraction time of the cylinder needs to be precisely adjusted to match the lifting time of the upper mold. Moreover, each time the cylinder is replaced, it needs to be readjusted, which is very cumbersome. Utility Model Content
[0004] Purpose of the utility model: In order to overcome the shortcomings of the prior art, this utility model provides a circular rod linkage telescopic structure for a wire harness terminal forming mold. It adopts a mechanical linkage structure, which controls the extension of the circular rod when the upper mold is pressed down. It is not only simple in structure, but also low in cost.
[0005] The technical solution adopted in this utility model is as follows: a circular rod linkage telescopic structure for a wire harness terminal forming mold, including an upper mold, a lower mold, and a telescopic structure installed between the upper mold and the lower mold. The telescopic structure includes an upper pressure block, two sets of side supports, a swing arm, a sliding seat, a circular rod, and a return spring. The upper pressure block is fixed inside the upper mold, the two sets of side supports are fixed on the lower mold, the upper end of the swing arm is fitted with a rotating shaft and assembled between the two sets of side supports, the sliding seat is located between the two sets of side supports and below the swing arm, one end of the circular rod is fixed to the sliding seat, and the other end is inserted into the lower mold. One end of the return spring is embedded in the sliding seat, and the other end abuts against the side of the lower mold. The upper pressure block, the swing arm, and the sliding seat are arranged vertically. As the upper mold is pressed down, the upper pressure block pushes the free end of the swing arm downward. The free end of the swing arm rotates around the rotating shaft, thereby pushing the sliding seat to move laterally, causing the circular rod to extend. As the upper mold is lifted, the upper pressure block separates from the swing arm, and the sliding seat moves laterally under the action of the return spring, causing the circular rod to retract.
[0006] Preferably, the lower end of the upper pressure block has a convex first arc-shaped surface on one side corresponding to the swing arm, and the swing arm has a concave second arc-shaped surface on one side corresponding to the upper pressure block.
[0007] Preferably, a limiting block is also provided on the lower mold at the rear end of the sliding seat.
[0008] Preferably, the side support has a support body, a side plate on the support body, a transverse through hole on the side plate, a vertical through mounting hole on the support body, and a sliding groove on the inner side of the support body.
[0009] Preferably, the sliding seat includes a sliding seat body, with sliding blocks extending from both sides of its lower end. The sliding blocks are embedded in the sliding grooves of the side supports to achieve sliding, and a plurality of first rollers are embedded on the back of the sliding blocks.
[0010] Preferably, the rear end face of the sliding seat has an arc-shaped cut surface corresponding to the position of the swing arm, and a second roller is embedded in the arc-shaped cut surface.
[0011] Beneficial effects: The circular rod linkage telescopic structure of the wire harness terminal forming mold disclosed in this utility model has the following effects: the mechanical linkage structure composed of the upper pressure block, the swing arm and the sliding seat can efficiently realize the telescopic control of the circular rod, and the linkage control is realized by the up and down movement of the upper mold. No additional debugging is required. The structure is simple, the cost is low and the service life is long. Attached Figure Description
[0012] Figure 1 A structural diagram of the wire harness terminal processed according to an embodiment of this utility model;
[0013] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present utility model;
[0014] Figure 3 This is a schematic diagram of the side support structure in an embodiment of the present invention;
[0015] Figure 4 This is a schematic diagram of the sliding seat mechanism in an embodiment of the present utility model;
[0016] Figure 5 This is a structural schematic diagram of the working state of an embodiment of the present invention. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0018] The circular rod linkage telescopic structure of the wire harness terminal forming mold disclosed in this utility model belongs to the local structure of the continuous forming mold of wire harness terminals, realizing the linkage telescopic movement of the circular rod. The specific structure is as follows: Figure 2 As shown, it includes an upper mold 1, a lower mold 2, and a telescopic structure 3 disposed between the upper mold and the lower mold. The upper mold has an upper template 11 and an upper mold core 12, and the lower mold has a lower template 21 and a lower mold core 22. The upper mold core and the lower mold core cooperate with each other to form the wire harness terminal. The telescopic structure is installed between the upper template and the lower template.
[0019] Specifically, the telescopic structure includes an upper pressure block 31, two sets of side supports 32, a swing arm 33, a sliding seat 34, a round rod 35, a return spring 36, and a limiting block 37. The upper pressure block is fixed to the back of the upper template, the two sets of side supports are fixed to the surface of the lower template, the upper end of the swing arm is fixed between the two sets of side supports with a rotating shaft 38, and the lower end is in a free state. The sliding seat is embedded between the two sets of side supports and located below the swing arm. One end of the round rod is fixed to the front end face of the sliding seat, and the other end is inserted into the lower mold core. One end of the spring is embedded in the front end face of the sliding seat, and the other end abuts against the side of the lower mold core. The limiting block is located at the rear end of the sliding seat to limit movement during reset.
[0020] The upper pressure block, the swing arm, and the sliding seat are arranged vertically. During use, the upper pressure block moves down with the upper mold, pushing the free end of the swing arm downward. The free end of the swing arm rotates around the pivot, which in turn pushes the sliding seat forward, causing the round rod to extend. As the upper mold is lifted, the upper pressure block is also lifted and separated from the swing arm. The sliding seat moves in the opposite direction under the action of the return spring, causing the round rod to retract.
[0021] The lower end of the upper pressure block has a first arc-shaped surface 311 that protrudes outward on one side of the swing arm, and the swing arm has a second arc-shaped surface 331 that is concave inward on one side of the upper pressure block. When the upper pressure block moves down, the first arc-shaped surface and the second arc-shaped surface cooperate to push the swing arm to rotate.
[0022] The side support enables the assembly of the swing arm and the sliding seat, and the specific structure is as follows: Figure 3 As shown, the side support has a support body 321, a side plate 322 on the support body, a transverse through hole 323 on the side plate, a vertical through mounting hole 324 on the support body, a sliding groove 325 on the inner side of the support body, the side support is fixed to the lower template by fasteners passing through the mounting hole, the upper end of the swing arm is fitted with a rotating shaft and assembled in the hole 323, and the two ends of the sliding seat are set in the sliding groove to achieve back and forth sliding.
[0023] The specific structure of the sliding seat is as follows: Figure 4As shown, the device includes a sliding seat body with sliding blocks 341 extending from both sides of its lower end. The sliding blocks are embedded in the sliding groove to achieve sliding. To improve the flexibility of sliding, a first roller 342 is embedded on the back of the sliding block, turning sliding into rolling and improving the flexibility of lateral movement. A round rod is installed on the front end face of the sliding seat, and two slots 343 are also provided on the front end face for embedding springs. The rear end face of the sliding seat has an arc-shaped cut surface 344 corresponding to the position of the swing arm, and a second roller 345 is embedded in the arc-shaped cut surface. In the initial state, the lower end of the swing arm is in contact with the second roller, and the force of the swing arm is diagonally downward. When the swing arm rotates, the lower end of the swing arm cooperates with the second roller to make the sliding seat start to move forward. At this time, the lower end of the swing arm is in contact with the rear side of the sliding seat, and the force of the swing arm is in the horizontal direction. Compared with the traditional right-angle structure, the structure of the arc-shaped cut surface and the second roller makes the change of force direction smoother, thereby ensuring the smoothness of the sliding seat sliding back and forth.
[0024] The circular rod linkage telescopic structure of the wire harness terminal forming mold disclosed in this utility model has the following initial state as follows: Figure 1 As shown, at this time, the upper and lower molds are separated, the upper pressure block and the swing arm are also separated, the sliding seat moves backward to the limit block under the action of the return spring, and the swing arm is in an inclined state. The working state of the forming mold is as follows. Figure 5 As shown, at this time the upper mold and the lower mold are in a fitted state. The upper pressure block pushes the swing arm to rotate, which in turn pushes the sliding block forward, so that the round rod is inserted.
[0025] The technical content and features of this utility model have been disclosed above. However, those skilled in the art may still make various substitutions and modifications that do not depart from the spirit of this utility model based on the teachings and disclosures of this utility model. Therefore, the protection scope of this utility model should not be limited to the content disclosed in the embodiments, but should include various substitutions and modifications that do not depart from this utility model, and should be covered by the claims of this patent application.
Claims
1. A round bar linkage telescopic structure of a wire harness terminal forming die, comprising an upper die, a lower die, and a telescopic structure installed between the upper die and the lower die, characterized in that: The telescopic structure includes an upper pressure block, two sets of side supports, a swing arm, a sliding seat, a round rod, and a return spring. The upper pressure block is fixed inside the upper mold, the two sets of side supports are fixed on the lower mold, the upper end of the swing arm is fitted with a rotating shaft between the two sets of side supports, the sliding seat is located between the two sets of side supports and below the swing arm, one end of the round rod is fixed to the sliding seat, and the other end is inserted into the lower mold, one end of the return spring is embedded in the sliding seat, and the other end abuts against the side of the lower mold. The upper pressure block, swing arm, and sliding seat are arranged vertically. As the upper mold is pressed down, the upper pressure block pushes the free end of the swing arm downward, and the free end of the swing arm rotates around the rotating shaft, thereby pushing the sliding seat to move laterally, causing the round rod to extend. As the upper mold is lifted, the upper pressure block separates from the swing arm, and the sliding seat moves laterally under the action of the return spring, causing the round rod to retract.
2. The round bar linkage telescoping structure of a wire harness terminal forming die according to claim 1, characterized in that: The lower end of the upper pressure block has a first convex arc-shaped surface on one side corresponding to the swing arm, and the swing arm has a second concave arc-shaped surface on one side corresponding to the upper pressure block.
3. The round bar linkage telescoping structure of a wire harness terminal forming die according to claim 1, characterized in that: A limiting block is also provided on the lower mold at the rear end of the sliding seat.
4. The round bar linkage telescoping structure of a wire harness terminal forming die according to claim 1, characterized in that: The side support has a support body, a side plate on the support body, a horizontal through hole on the side plate, a vertical through mounting hole on the support body, and a sliding groove on the inner side of the support body.
5. The round bar linkage telescoping structure of a wire harness terminal forming die according to claim 4, characterized in that: The sliding seat includes a sliding seat body, with sliding blocks extending from both sides of its lower end. The sliding blocks are embedded in the sliding grooves of the side supports to achieve sliding. Multiple first rollers are embedded on the back of the sliding blocks.
6. The round bar linkage telescoping structure of a wire harness terminal forming die according to claim 5, characterized in that: The rear end face of the sliding seat is provided with an arc-shaped cut surface corresponding to the position of the swing arm, and a second roller is embedded in the arc-shaped cut surface.