Injection molding mold for embedding a terminal and a bushing

Abstract

The utility model discloses a kind of injection molding mould for embedding terminal and bushing, forming space is formed between lower mould and upper mould, and forming space is formed with access space communication;First positioning structure for positioning terminal is equipped on lower forming structure;Sliding block is movably arranged in access space, with the matching surface of facing lower forming structure, and with pre-positioning position and positioning position;Sliding block is equipped with threading channel, and the second positioning structure for forming sleeve joint cooperation with bushing is equipped on matching surface;In pre-positioning position, threading channel is used for threading cooperation with terminal, and the second positioning structure and the corresponding forming surface between upper forming structure form avoidance gap;When lower mould and upper mould are closed, sliding block moves from pre-positioning position to the direction of approaching lower forming structure and forms positioning position.The utility model can make terminal and bushing accurate and reliable when embedding, and terminal and bushing can be prevented from being scratched when closing.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to injection molding molds for embedding terminals and bushings. Background Technology

[0002] With the development and popularization of new energy vehicles, automotive electronic products are being used more and more widely. These products rely heavily on both low-voltage signal transmission and high-voltage current transmission. Consequently, injection molding technology for embedding copper terminals and bushings in plastic has also developed rapidly. Utilizing the excellent conductivity of copper terminals, the insulating properties of plastic, and the protective function of bushings, complex product designs have become possible. In the automotive electronics field, the use of injection-molded parts with embedded terminals and bushings is constantly increasing, and the requirements for product dimensions are becoming increasingly stringent. If the terminals and bushings are not accurately positioned when embedded in the mold, the moving mold can easily scratch them during mold closing, and the molded product is prone to defects. Therefore, there is an urgent need to design an injection molding mold that ensures accurate and reliable positioning of terminals and bushings during embedding and prevents scratching during mold closing to meet the requirements of injection molding. Utility Model Content

[0003] To address the aforementioned technical problems, the purpose of this utility model is to propose an injection molding mold for embedding terminals and bushings. The terminals and bushings are accurately and reliably positioned during embedding, and the mold can prevent the terminals and bushings from being scratched during mold closing, effectively meeting the requirements of injection molding and possessing strong practicality.

[0004] The technical solution of this utility model is achieved as follows: an injection molding mold for embedding terminals and bushings, comprising a lower mold with a lower molding structure, an upper mold with an upper molding structure, and a slider;

[0005] A molding space is formed between the lower mold and the upper mold, and an inlet / outlet space is formed extending along a first direction and communicating with the molding space; both the upper molding structure and the lower molding structure are located within the molding space;

[0006] The lower molding structure is provided with a first positioning structure for positioning terminals;

[0007] The slider is movably disposed in the in-and-out space, has a mating surface with a downward forming structure, and has a pre-positioning position and a positioning position in a first direction;

[0008] The slider has an insertion channel extending in the first direction at the corresponding terminal, and a plurality of second positioning structures for forming a sleeve engagement with the bushing on the mating surface;

[0009] At the predetermined positioning position, the insertion channel is used to insert and cooperate with the terminal along the first direction, and an avoidance gap is formed between the corresponding forming surfaces of the second positioning structure and the upper forming structure in the first direction;

[0010] When the lower mold and the upper mold are closed, the slider moves from the predetermined positioning position toward the direction of the lower molding structure to form the positioning position; and at the positioning position, the lower mold, the upper mold, and the mating surface enclose each other to form a closed injection molding cavity.

[0011] Furthermore, the lower molding structure is a protruding structure; the upper molding structure is a concave cavity structure.

[0012] Furthermore, the top surface of the lower mold is provided with a lower groove extending along the first direction; the bottom surface of the upper mold is provided with an upper groove extending along the first direction; the inlet / outlet space is formed between the lower groove and the upper groove; the slider is slidably disposed within the lower groove.

[0013] Furthermore, the first positioning structure is a countersunk hole for the upper and lower insertion of the terminal.

[0014] Furthermore, a first insert is embedded in the slider; the first insert forms the interlocking channel; and the mating surface is provided with an insertion port communicating with the interlocking channel.

[0015] Furthermore, a second insert is embedded in the slider; the second insert has an assembly end exposed on the mating surface; the second positioning structure is the assembly end of the second insert.

[0016] Furthermore, the slider has an initial position in a first direction that is away from the predetermined positioning position and the positioning position; the slider is provided with a plurality of contact springs; the contact springs have elastic telescopic ends facing the lower mold; at the predetermined positioning position, the elastic telescopic ends of the contact springs are in contact with the lower mold.

[0017] Furthermore, the injection molding die includes a first driving device; the first driving device is used to drive the slider to move from the positioning position to the initial position.

[0018] Furthermore, the slider has a sliding channel extending in a first direction; the first driving device has a driving end that moves in the first direction; the driving end of the first driving device is movably disposed in the sliding channel and forms a limiting fit with the end of the sliding channel away from the lower mold.

[0019] Furthermore, the injection molding die includes a second driving device; the second driving device is used to drive the slider to move from the predetermined position to the positioning position.

[0020] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0021] This invention utilizes a slider to position the terminal on the lower mold via a first positioning structure and a bushing on a second positioning structure. When the slider moves to the predetermined position, the end of the terminal engages with the insertion channel for further positioning. Furthermore, a clearance is formed between the bushing and the corresponding molding surface of the upper molding structure, preventing the upper molding structure from scratching the bushing during mold closing. After the upper and lower molds are closed, the slider is driven to the positioning position for complete placement. This combination ensures accurate and reliable positioning of the terminal and bushing during insertion and prevents scratching during mold closing, effectively meeting injection molding requirements and demonstrating strong practicality. Attached Figure Description

[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0023] Figure 1 This is a three-dimensional structural diagram of the overall structure of this utility model;

[0024] Figure 2 for Figure 1 Enlarged view of point A in the image;

[0025] Figure 3 for Figure 1 A top view structural diagram of the mold during mold closing;

[0026] Figure 4 for Figure 3 Sectional view at point BB in the middle;

[0027] Figure 5 for Figure 3 Sectional view at DD in the middle;

[0028] Figure 6 This is a three-dimensional structural diagram of the lower mold of this utility model;

[0029] Figure 7 This is a three-dimensional structural schematic diagram of the slider of this utility model;

[0030] Figure 8 for Figure 7 Exploded view;

[0031] Figure 9 This is a three-dimensional structural diagram of the upper mold of this utility model;

[0032] The components are: 1. Lower mold; 11. Lower forming structure; 111. First positioning structure; 12. Lower groove; 2. Upper mold; 21. Upper forming structure; 22. Upper groove; 3. Slider; 31. Mating surface; 311. Insert; 32. First insert; 321. Through channel; 33. Second insert; 331. Second positioning structure; 34. Contact spring; 341. Elastic telescopic end; 35. Sliding channel; 4. First driving device; 5. Second driving device; 6. Injection molding cavity; 7. Terminal; 8. Bushing. Detailed Implementation

[0033] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0034] like Figure 1-9 The image shows an injection molding mold for embedding a terminal 7 and a bushing 8 according to this embodiment. The terminal 7 and bushing 8 are conventional components of the prior art. The terminal 7 is a metal part with a pre-defined structure. The bushing 8 has a circular ring structure. The injection molding mold includes a lower mold 1, an upper mold 2, and a slider 3. The upper mold 2 is vertically movably arranged above the lower mold 1, so that there are a mold-closing position and a mold-parting position between the upper mold 2 and the lower mold 1. A lower molding structure 11 is arranged on the top surface of the lower mold 1, and a lower molding structure 21 is arranged on the bottom surface of the upper mold 2. In this embodiment, the lower molding structure 11 is a protruding structure, and the upper molding structure 21 is a concave cavity structure. A molding space is formed between the lower mold 1 and the upper mold 2. The aforementioned upper molding structure 21 and lower molding structure 11 are both located within the molding space to form an injection molded part within the molding space. An inlet / outlet space extending along a first direction and communicating with the molding space is formed between the upper mold 2 and the lower mold 1. The aforementioned first direction is a horizontal direction. In the specific structural design, a lower groove 12 extending along a first direction is machined on the top surface of the lower mold 1. The first end of the lower groove 12 is close to the lower forming structure 11, and the second end forms an open end. An upper groove 22 extending along the first direction is machined on the bottom surface of the upper mold 2. The first end of the upper groove 22 is close to the upper forming structure 21, and the second end forms an open end. An inlet / outlet space is formed between the aforementioned lower groove 12 and upper groove 22. The slider 3 is slidably arranged in the lower groove 12 so that it can move along the first direction. Through the above structural design, when the mold is closed, a portion of the slider 3 can enter the upper groove 22.

[0035] In this embodiment, a first positioning structure 111 for positioning the terminal 7 is arranged on the lower forming structure 11. This first positioning structure 111 is designed according to the actual structure of the terminal 7. In this embodiment, the first positioning structure 111 is a countersunk portion for the terminal 7 to be inserted vertically. The aforementioned slider 3 is movably arranged in the access space to move along a first direction. The slider 3 has a mating surface 31 facing the lower forming structure 11, and a predetermined positioning position and a fixed positioning position in the first direction. The slider 3 has an insertion channel 321 extending along the first direction corresponding to the terminal 7, and a plurality of second positioning structures 331 are distributed on the mating surface 31. The bushing 8 can be fitted onto the second positioning structure 331 to form a fitted fit, thereby being positioned on the slider 3. At the aforementioned predetermined positioning position, the insertion channel 321 is used to insert into the terminal 7 along the first direction, thereby limiting the terminal 7 on the slider 3. At this predetermined positioning position, a clearance gap is formed in the first direction between the aforementioned second positioning structure 331 and the corresponding molding surface of the upper molding structure 21, so that a clearance gap is formed between the bushing 8 on the second positioning structure 331 and the corresponding molding surface of the upper molding structure 21. When the upper mold 2 closes, the molding surface and the bushing 8 are offset from each other to avoid contact. The corresponding molding surface of the upper molding structure 21 is the side facing the mating surface 31 when the mold is closed.

[0036] When the lower mold 1 and upper mold 2 are closed, the slider 3 moves from its predetermined position toward the lower molding structure 11 to form a positioning position. During the movement of the slider 3 from the predetermined position to the positioning position, the terminal 7 remains positioned within the insertion channel 321. By rationally designing the dimensions of the slider 3, a clearance fit is achieved between the slider 3 and the inlet / outlet space. When the slider 3 is fully moved into position at this positioning position, the lower mold 1, upper mold 2, and mating surface 31 enclose and form a closed injection molding cavity 6. An injection molded part is formed within this injection molding cavity 6.

[0037] In this embodiment, a first insert 32 is embedded in the aforementioned slider 3, and the aforementioned insertion channel 321 is formed within the first insert 32. A socket 311 communicating with the insertion channel 321 is machined on the aforementioned mating surface 31. When the slider 3 moves to a predetermined position, the terminal 7 is inserted into the insertion channel 321 via the socket 311. A second insert 33 is embedded in the aforementioned slider 3. The second insert 33 extends along a first direction and has an assembly end exposed on the mating surface 31. The aforementioned second positioning structure 331 is the assembly end of the second insert 33. The assembly end of the second insert 33 has a cylindrical structure to fit the inner diameter of the bushing 8.

[0038] In this embodiment, the slider 3 has an initial position in a first direction that is away from the pre-positioning position and the positioning position. In this initial position, the mating surface 31 of the slider 3 is away from the molding space. A plurality of contact springs 34 are arranged on the slider 3. Each contact spring 34 has an elastically telescopic end 341 facing the lower mold 1. In the pre-positioning position, the elastically telescopic end 341 of the contact spring 34 contacts and engages with the lower mold 1, thereby restricting the slider 3 to its current position. The distance between the slider 3 at the pre-positioning position and the positioning position is preferably 5 mm.

[0039] The injection molding die of this embodiment includes a first driving device 4 and a second driving device 5. The first driving device 4 is used to drive the slider 3 from a positioning position or a pre-positioning position to an initial position, so that the slider 3 moves away from the upper mold 2 and the lower mold 1. In a specific structural design, the slider 3 has a sliding channel 35 extending along a first direction. The first driving device 4 has a driving end that moves along the first direction. The driving end of the first driving device 4 is movably arranged in the sliding channel 35 and forms a limiting fit with the end of the sliding channel 35 away from the lower mold 1. When the slider 3 is in the positioning position or the pre-positioning position, the driving end of the first driving device 4 moves in the direction away from the lower mold 1 and mutually limits the end of the sliding channel 35 away from the lower mold 1, so as to pull the slider 3 to move towards the initial position. When the slider 3 is in the initial position, the driving end of the first driving device 4 is controlled to move in the direction closer to the lower mold 1 in the sliding channel 35, so as to release the limiting fit between the driving end of the first driving device 4 and the sliding channel 35, thereby enabling the slider 3 to be manually pushed to move from the initial position to the pre-positioning position. The first driving device 4 is preferably a hydraulic cylinder. The second driving device 5 is used to drive the slider 3 from a predetermined position to a fixed position. At the fixed position, the second driving device 5 is configured to selectively release the drive on the slider 3, allowing the slider 3 to move freely. During the movement of the slider 3 from the predetermined position to the fixed position, the contact spring 34 is compressed to a certain extent. After injection molding is completed, the second driving device 5 releases the drive on the slider 3. Depending on the actual working conditions, the slider 3 may or may not move from the fixed position to the predetermined position under the elastic force of the contact spring 34. The second driving device 5 is a conventional device in the prior art, which includes a bundle block and upper and lower drivers; the bundle block is arranged vertically and vertically beside the slider 3, and it forms a beveled engagement with the slider 3. The upper and lower drivers drive the bundle block to move vertically. When the bundle block moves downward, it drives the slider 3 to move towards the lower mold 1.

[0040] In practical use, when slider 3 is in the initial position, the drive end of the first drive device 4 moves towards the lower mold 1 in the sliding channel 35 to a preset position. Terminal 7 is embedded in the lower molding structure 11 and positioned by the first positioning structure 111, while bushing 8 is fitted and positioned onto the second positioning structure 331. Slider 3 is manually pushed from the initial position to the preset position, causing terminal 7 to insert into the insertion channel 321 for further positioning, while a clearance gap is formed between bushing 8 and the corresponding molding surface of upper molding structure 21. Upper mold 2 is driven to the mold closing position. The corresponding molding surface on upper molding structure 21 moves away from bushing 8 to avoid scratching bushing 8, and because terminal 7 is accurately positioned, the corresponding molding surface of upper molding structure 21 will not scratch terminal 7. After upper mold 2 and lower mold 1 are closed, the second drive device 5 drives slider 3 to move to the positioning position for complete positioning. After injection molding is completed, the driving end of the first driving device 4 moves away from the lower mold 1 within the sliding channel 35 and is mutually limited by the end of the sliding channel 35 away from the lower mold 1, so as to pull the slider 3 to move back to the initial position so as to remove the injection molded part. In the above method, the terminal 7 and the bushing 8 are accurately and reliably positioned when embedded, and the terminal 7 and the bushing 8 can be prevented from being scratched when the mold is closed, effectively meeting the injection molding requirements and having strong practicality.

[0041] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An injection molding die for embedding terminals and bushings, comprising a lower die with a lower molding structure, an upper die with an upper molding structure, and a slider; characterized in that: A molding space is formed between the lower mold and the upper mold, and an inlet / outlet space is formed extending along a first direction and communicating with the molding space; both the upper molding structure and the lower molding structure are located within the molding space; The lower molding structure is provided with a first positioning structure for positioning terminals; The slider is movably disposed in the in-and-out space, has a mating surface with a downward forming structure, and has a pre-positioning position and a positioning position in a first direction; The slider has an insertion channel extending in the first direction at the corresponding terminal, and a plurality of second positioning structures for forming a sleeve engagement with the bushing on the mating surface; At the predetermined positioning position, the insertion channel is used to insert and cooperate with the terminal along the first direction, and an avoidance gap is formed between the corresponding forming surfaces of the second positioning structure and the upper forming structure in the first direction; When the lower mold and the upper mold are closed, the slider moves from the predetermined positioning position toward the direction of the lower molding structure to form the positioning position; and at the positioning position, the lower mold, the upper mold, and the mating surface enclose each other to form a closed injection molding cavity.

2. The injection molding die for embedding terminals and bushings according to claim 1, characterized in that: The lower forming structure is a raised structure; the upper forming structure is a concave structure.

3. The injection molding die for embedding terminals and bushings according to claim 1, characterized in that: The lower mold has a lower groove extending in a first direction on its top surface; the upper mold has an upper groove extending in a first direction on its bottom surface; the inlet / outlet space is formed between the lower groove and the upper groove; the slider is slidably disposed in the lower groove.

4. The injection molding die for embedding terminals and bushings according to claim 1, characterized in that: The first positioning structure is a countersunk hole for the upper and lower insertion of the terminal.

5. The injection molding die for embedding terminals and bushings according to claim 1, characterized in that: The slider is fitted with a first insert; the first insert forms the insertion channel; the mating surface is provided with an insertion port that communicates with the insertion channel.

6. The injection molding die for embedding terminals and bushings according to claim 1, characterized in that: The slider is fitted with a second insert; the second insert has an assembly end exposed on the mating surface; the second positioning structure is the assembly end of the second insert.

7. The injection molding die for embedding terminals and bushings according to claim 1, characterized in that: The slider has an initial position in a first direction that is away from the predetermined positioning position and the positioning position; the slider is provided with a plurality of contact springs; the contact springs have elastic extension ends facing the lower mold; at the predetermined positioning position, the elastic extension ends of the contact springs are in contact with the lower mold.

8. The injection molding die for embedding terminals and bushings according to claim 7, characterized in that: The injection molding die includes a first driving device; the first driving device is used to drive the slider to move from the positioning position to the initial position.

9. The injection molding die for embedding terminals and bushings according to claim 8, characterized in that: The slider has a sliding channel extending in a first direction; the first driving device has a driving end that moves in the first direction; the driving end of the first driving device is movably disposed in the sliding channel and forms a limiting fit with the end of the sliding channel away from the lower mold.

10. The injection molding die for embedding terminals and bushings according to claim 1, characterized in that: The injection molding die includes a second driving device; the second driving device is used to drive the slider to move from the predetermined position to the positioning position.

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