An injection mold for forming wire harness with wire tail clips

Abstract

This utility model provides an injection mold for molding wire harnesses with end clips, including an upper mold, a lower mold, and a mold strip for molding the locking structure of the wire harness end clip. The lower mold and upper mold are respectively provided with cavity one and cavity two, which are matched and opposite to each other. The mold strip is detachably connected to the lower mold, and the mold strip is provided with locking structure forming blocks equal in number to cavity one, with the locking structure forming blocks located within cavity one. The upper mold is provided with cavity three matching the locking structure forming blocks and groove one matching the mold strip; cavity three communicates with cavity two. When the mold is closed, cavity one and cavity two form a mold cavity, and cavity three covers the locking structure forming blocks, which are located within the mold cavity. This injection mold, when installed on an injection molding machine, can achieve integrated injection molding of wire harnesses with end clips. This injection mold not only facilitates the replacement of the mold strip to process wire harnesses with end clips of different locking structures, but also facilitates disassembly, maintenance, and repair.

Description

Technical Field

[0001] This utility model relates to the field of electronic component manufacturing technology, and more specifically, to an injection mold for forming wire harness tail clips. Background Technology

[0002] In the automotive, electronics, and communications industries, wire harnesses serve as the core carriers for transmitting electrical signals and data. Their connection stability and assembly efficiency directly affect the performance and production pace of the entire machine. Wire harness end clips, as key fixing and connecting components at the ends of wire harnesses, are mainly used for fixing, guiding, and protecting wire harnesses on the vehicle body or equipment frame. Their forming quality is crucial to the subsequent wire harness assembly and the stability of equipment operation.

[0003] Traditional wire harness tail clip molding technology mainly relies on prefabrication and crimping processes: First, standard-sized individual tail clips with locking structures are mass-produced from plastics (such as nylon, PBT, etc.) using an injection molding machine. Then, in the subsequent wire harness assembly process, operators manually or with the aid of simple jigs place the pre-cut wire harness into the slots of the tail clips. Finally, the locking structure of the tail clips is forcibly closed by physical methods (such as manual pressing with crimping pliers, ultrasonic welding, or riveting), thereby clamping and securing the wire harness. However, this wire harness tail clip molding technology has certain drawbacks: 1. Poor connection reliability and consistency: The tightness of the crimping is highly dependent on the operator's skill and the condition of the crimping tools. Insufficient pressure will cause the tail clip to be loosely secured, and the wire harness may easily loosen under long-term vibration during use; excessive pressure may damage the wire harness insulation layer or even break the internal copper wires, leading to a short circuit risk. This fluctuation and poor consistency in product quality caused by human factors poses certain safety hazards.

[0004] 2. Low production efficiency and low degree of automation: The process involves multiple steps, such as sorting tail cards, positioning and crimping, which are difficult to automate and rely heavily on manual operation. This results in high labor intensity, reduces the efficiency of the wire harness production process, and fails to meet the large-scale production needs of modern manufacturing. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings and deficiencies of existing technologies and provide an injection mold for molding wire harnesses with end clips. This injection mold is mounted on an injection molding machine, enabling integrated molding of the wire harness and end clips. This not only improves the reliability and consistency of the connection between the wire harness and the end clip but also increases processing efficiency, making it suitable for large-scale production. Furthermore, the component of the injection mold used for molding the locking structure is detachable, facilitating not only replacement for processing wire harnesses with different locking structures but also convenient disassembly, maintenance, and repair.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: an injection mold for forming a wire harness with a tail clip, characterized in that: it includes an upper mold, a lower mold, and a mold strip for forming a locking structure for the wire harness with a tail clip; the lower mold and the upper mold are respectively provided with a plurality of cavities one and two for forming the body of the wire harness with a tail clip, cavities one and two being matched and oppositely arranged; the mold strip is detachably connected to the lower mold, and the mold strip is provided with a number of locking structure forming blocks equal to the number of cavities one, the locking structure forming blocks being located inside cavities one; the upper mold is provided with a cavity three matching the locking structure forming blocks and a groove one matching the mold strip for installation, cavities three being connected to cavities two; when the mold is closed, cavities one and two form a mold cavity, and the locking structure forming blocks are covered by cavities three, the locking structure forming blocks being located inside the mold cavity.

[0007] In the above solution, the injection mold of this utility model is installed on an injection molding machine. By closing the upper and lower molds through the injection molding machine, the wire harness and tail clip can be integrally molded, thereby improving not only the reliability and consistency of the connection between the wire harness and the tail clip, but also increasing processing efficiency, making it suitable for large-scale production needs. Furthermore, the mold strip used for molding the locking structure of the wire harness and tail clip is detachably connected to the lower mold. Therefore, when processing wire harnesses and tail clips with different locking structures, the mold strip can be directly replaced, eliminating the need for customizing a complete mold for each locking structure, which would otherwise result in high processing costs. Additionally, when the molded part of the locking structure, which is a high-wear area, requires maintenance, the mold strip can be directly removed. This not only reduces maintenance difficulty but also allows for the installation of another mold strip to continue processing, thus not affecting the processing and production of the wire harness and tail clip.

[0008] The locking structure molding block has insertion holes for protecting the wire harness electrical terminals. During injection molding, the wire harness electrical terminals are inserted into the insertion holes, ensuring that the injection molding liquid does not affect the wire harness electrical terminals.

[0009] The upper and lower molds are provided with injection channels for the flow of injection liquid; the upper mold is provided with an injection port; the injection channels are respectively connected to the injection port and the mold cavity.

[0010] The infusion channel includes a main infusion channel and several sub-infusion units; the main infusion channel is formed by a groove and a slot opened by a template, and the main infusion channel is connected to the injection port and several sub-infusion units respectively.

[0011] The fluid dispensing unit is located between the two mold cavities.

[0012] Each infusion unit includes a vertical infusion channel, a horizontal infusion channel, and at least two inlet branches; the vertical infusion channel is formed by a groove on the inner wall of the groove and the outer wall of the template, and communicates with the horizontal infusion channel.

[0013] The horizontal infusion channel and the inlet branch are formed by grooves opened in the upper mold and the lower mold, respectively; the inlet branch is connected to the horizontal infusion channel and the two mold cavities, respectively.

[0014] The design of the infusion channel in this invention allows the injection liquid to flow evenly and quickly into each mold cavity, thereby improving processing efficiency.

[0015] The lower mold is also provided with a wire clamping plate; the wire clamping plate is provided with a wire clamping hole for positioning the wire harness at the position opposite to the cavity; the upper mold is provided with a groove that matches the wire clamping plate.

[0016] The front end face of the lower mold is provided with a plate; a second wire-locking hole for positioning the wire harness is provided on the plate opposite to the cavity. When the mold is closed, the second wire-locking hole is located outside the injection mold, which can further position the wire harness and also facilitate the operator to pick up the molded product through the positioned wire harness after injection molding.

[0017] The injection mold also includes a positioning structure for positioning when the upper and lower molds are closed; the positioning structure includes a positioning post disposed in the upper mold and a positioning hole opened in the lower mold; the positioning post and the positioning hole are disposed opposite to each other.

[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects: 1. The injection mold of this utility model is installed on an injection molding machine, which can realize the integrated injection molding of wire harness and tail clip, thereby not only improving the reliability and consistency of the connection between the wire harness and the tail clip, but also improving the processing and production efficiency, which is suitable for large-scale production needs.

[0019] 2. In the injection mold for forming wire harness tape end clips of this utility model, the component used for forming the locking structure is a detachable structure, which not only facilitates replacement to process wire harness tape end clips with different locking structures, but also makes disassembly, maintenance and repair convenient.

[0020] 3. The design of the infusion channel in this utility model allows the injection liquid to flow evenly and quickly into each mold cavity, which can improve processing efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram showing the mold strip being set in the lower mold of the injection mold for forming the wire harness with the wire tail clip of this utility model; Figure 2 This is a schematic diagram of the upper mold in the injection mold for forming the wire harness with the wire tail clip of this utility model; Figure 3 This is a schematic diagram of the mold strip in the injection mold for forming the wire harness with the wire tail clip of this utility model; Figure 4 This is a schematic diagram of the wire harness with end clip in this utility model; Among them, 1 is the upper mold, 2 is the lower mold, 3 is the wire harness with wire tail clip, 3.1 is the locking structure, 4 is the mold strip, 5 is cavity one, 6 is cavity two, 7 is the locking structure forming block, 7.1 is the insertion hole, 8 is cavity three, 9 is groove one, 10 is the wire harness power terminal, 11 is the liquid injection port, 12 is the main liquid delivery channel, 13 is the vertical branch liquid delivery channel, 14 is the horizontal liquid delivery channel, 15 is the liquid inlet branch, 16 is the wire clamping plate, 17 is the wire harness, 18 is the wire clamping hole one, 19 is the groove two, 20 is the plate, 21 is the wire clamping hole two, 22 is the positioning post, and 23 is the positioning hole. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Example

[0023] like Figures 1 to 4 As shown, the injection mold for forming wire harness tail clips of this utility model includes an upper mold 1, a lower mold 2, and a mold strip 4 for forming the locking structure 3.1 of the wire harness tail clip 3. The lower mold 2 and the upper mold 1 are respectively provided with a plurality of cavities 1.5 and 2.6 for forming the body of the wire harness tail clip 3, with cavities 1.5 and 2.6 matched and oppositely arranged. The mold strip 4 is detachably connected to the lower mold 2, and the mold strip 4 is provided with a number of locking structure forming blocks 7 equal to the number of cavities 1.5, located within cavities 1.5. The upper mold 1 of this utility model is provided with a cavity 3.8 matching the locking structure forming blocks 7 and a groove 1.9 matching the mold strip 4. Cavity 3.8 communicates with cavity 2.6. When the mold is closed, cavities 1.5 and 2.6 form a mold cavity, with cavity 3.8 covering the locking structure forming blocks 7, which are located within the mold cavity.

[0024] Specifically, the locking structure molding block 7 has a socket 7.1 for protecting the wire harness electrical terminals 10. During the injection molding process, the wire harness electrical terminals 10 are inserted into the socket 7.1, so that the injection molding liquid will not affect the wire harness electrical terminals 10.

[0025] The upper mold 1 and lower mold 2 of this invention are provided with injection channels for the flow of injection molding liquid. The upper mold 1 is provided with an injection port 11, and the injection channels are connected to both the injection port 11 and the mold cavity. Furthermore, the injection channels include a main injection channel 12 and several distribution injection units. The main injection channel 12 is formed by grooves formed by recess 9 and mold strip 4, and is connected to both the injection port 11 and the several distribution injection units. The distribution injection units are located between the two mold cavities. Each distribution injection unit includes a vertical distribution channel 13, a horizontal injection channel 14, and at least two inlet branches 15. The vertical distribution channel 13 is formed by grooves formed by the inner wall of recess 9 and the outer wall of mold strip 4, and is connected to the horizontal injection channel 14. The horizontal injection channel 14 and the inlet branches 15 are formed by grooves formed by the upper mold 1 and lower mold 2, respectively, and are connected to both the horizontal injection channel 14 and the two mold cavities. The design of the infusion channel in this invention allows the injection liquid to flow evenly and quickly into each mold cavity, thereby improving processing efficiency.

[0026] In addition, the lower mold 2 of this utility model is also provided with a wire-holding plate 16. The wire-holding plate 16 is provided with a wire-holding hole 18 for positioning the wire harness 17 at the position opposite to the cavity 5, while the upper mold 1 is provided with a groove 19 that matches the wire-holding plate 16. At the same time, the front end face of the lower mold 2 is provided with a plate 20. The plate 20 is provided with a wire-holding hole 21 for positioning the wire harness 17 at the position opposite to the cavity 5. When the mold is closed, the wire-holding hole 21 is located outside the injection mold, which can further position the wire harness 17 and also facilitate the operator to pick up the molded product through the positioned wire harness 17 after injection molding.

[0027] The injection mold of this utility model also includes a positioning structure for positioning when the upper mold 1 and the lower mold 2 are closed. The positioning structure includes a positioning post 22 provided in the upper mold 1 and a positioning hole 23 opened in the lower mold 2. The positioning post 22 and the positioning hole 23 are arranged opposite to each other.

[0028] In this invention, the mold strip 4 for forming the locking structure 3.1 of the wire harness tail clip 3 is detachably connected to the lower mold 2. Therefore, when different locking structures 3.1 of the wire harness tail clip 3 need to be processed, the mold strip 4 can be directly replaced, eliminating the need for a separate complete mold for each locking structure 3.1, which would otherwise result in high processing costs. Furthermore, when the formed part of the locking structure 3.1, which is a high-wear area, requires maintenance, the mold strip 4 can be directly removed. This not only reduces the difficulty of maintenance but also allows for the installation of another mold strip 4 to continue processing and production, thus not affecting the processing and production of the wire harness tail clip 3.

[0029] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. An injection mold for forming a wire harness with a wire tail clip, characterized in that: The system includes an upper mold, a lower mold, and a mold strip for forming a locking structure for the wire harness tail clip. The lower mold and upper mold are each provided with several cavities (Cavity 1 and Cavity 2) for forming the main body of the wire harness tail clip, with Cavities 1 and 2 matched and opposite to each other. The mold strip is detachably connected to the lower mold and has an equal number of locking structure forming blocks as Cavities 1, with the locking structure forming blocks located within Cavities 1. The upper mold has a cavity 3 that matches the locking structure forming blocks and a groove 1 that matches the mold strip; Cavity 3 communicates with Cavities 2. When the mold is closed, Cavities 1 and 2 form a mold cavity, and Cavity 3 is closed to cover the locking structure forming blocks, which are located within the mold cavity.

2. The injection mold for forming wire harness tail clips according to claim 1, characterized in that: The locking structure molding block has a socket for protecting the electrical terminals of the wire harness.

3. The injection mold for forming wire harness tail clips according to claim 1, characterized in that: The upper and lower molds are provided with injection channels for the flow of injection liquid; the upper mold is provided with an injection port; the injection channels are respectively connected to the injection port and the mold cavity.

4. The injection mold for forming wire harness tail clips according to claim 3, characterized in that: The infusion channel includes a main infusion channel and several sub-infusion units; the main infusion channel is formed by a groove and a slot opened by a template, and the main infusion channel is connected to the injection port and several sub-infusion units respectively.

5. The injection mold for forming wire harness tail clips according to claim 4, characterized in that: The fluid dispensing unit is located between the two mold cavities.

6. The injection mold for forming wire harness tail clips according to claim 4, characterized in that: Each infusion unit includes a vertical infusion channel, a horizontal infusion channel, and at least two inlet branches; the vertical infusion channel is formed by a groove on the inner wall of the groove and the outer wall of the template, and communicates with the horizontal infusion channel.

7. The injection mold for forming wire harness tail clips according to claim 6, characterized in that: The horizontal infusion channel and the inlet branch are formed by grooves opened in the upper mold and the lower mold, respectively; the inlet branch is connected to the horizontal infusion channel and the two mold cavities, respectively.

8. The injection mold for forming wire harness tail clips according to claim 1, characterized in that: The lower mold is also provided with a wire clamping plate; the wire clamping plate is provided with a wire clamping hole for positioning the wire harness at the position opposite to the cavity; the upper mold is provided with a groove that matches the wire clamping plate.

9. The injection mold for forming wire harness tail clips according to claim 1, characterized in that: The front end face of the lower mold is provided with a plate; the plate is provided with a wire-locking hole 2 for positioning the wire harness at the position opposite to the cavity 1.

10. The injection mold for forming wire harness tail clips according to claim 1, characterized in that: The injection mold also includes a positioning structure for positioning when the upper and lower molds are closed; the positioning structure includes a positioning post disposed in the upper mold and a positioning hole opened in the lower mold; the positioning post and the positioning hole are disposed opposite to each other.

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