A multi-cavity injection mold for a plastic connector

Abstract

The utility model discloses a kind of wiring terminal plastic piece injection mould of multimode cavity, including upper die, lower die, two mould support seat, mould bottom plate and mould top plate, the bottom end of lower die is equipped with lower injection cavity, the middle part of the top end of mould top plate is equipped with gate position, the top of gate position is provided with gate disc, the bottom end of gate position is provided with hot runner inserted into upper injection cavity, heating jacket is installed in the outer surface of hot runner, and the flow channel of hot runner is horn channel.The utility model is equipped with heating jacket by being installed in the outer surface of hot runner, and the flow channel of hot runner is set as horn channel, so that the incoming molten material can be heated, so that the surface of hot runner has a certain temperature, avoids low temperature state and molten material contact to cause molten material cooling phenomenon, effectively avoids blockage, and adopts the setting of horn channel shape, conveniently better discharge molten material.

Description

Technical Field

[0001] This utility model relates to a multi-cavity injection mold for wiring terminal plastic parts, belonging to the field of injection mold technology. Background Technology

[0002] Terminal blocks are accessories used to achieve electrical connections. In industry, they are classified as connectors. With the increasing level of industrial automation and the increasingly stringent and precise requirements of industrial control, the usage of terminal blocks is gradually increasing. With the development of the electronics industry, the application scope of terminal blocks is expanding, and the types are also increasing.

[0003] Terminal blocks are typically manufactured using injection molding. Existing technology, such as the terminal block injection mold disclosed in patent number CN201721585746.9, solves the problem of mutual contact between the two pins and the wires within the outer plastic coating of products produced using existing molds, which affects the product yield. The key technical points of this solution are: a fixed mold plate and a movable mold plate, which abut against each other to form a molding cavity for the outer plastic coating. A limiting post is provided within the molding cavity to separate the two wires within the outer plastic coating. The limiting post is fixed to the inner wall of the molding cavity, and its side away from the molding cavity is inserted into the outer plastic coating and positioned between the two wires to separate them. This terminal block injection mold, by setting a limiting post within the molding cavity to separate the two wires and pins within the outer plastic coating of the terminal block, prevents short circuits in the injection-molded product, thus improving the product yield.

[0004] The disadvantage of the aforementioned injection mold is that it lacks a heated runner structure during the pouring of molten hot raw materials. To address this, we have designed a multi-cavity injection mold for terminal plastic parts. Utility Model Content

[0005] The purpose of this invention is to provide a multi-cavity injection mold for terminal plastic parts to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-cavity injection mold for terminal plastic parts, comprising an upper mold body, a lower mold body, two mold support seats, a mold base plate, and a mold top plate. The upper mold body and the lower mold body are connected by mold closing. The bottom end of the upper mold body is provided with an upper injection cavity, and the bottom end of the lower mold body is provided with a lower injection cavity. A sprue position is opened in the middle of the top of the mold top plate. A sprue plate is provided at the top of the sprue position. A hot runner is provided at the bottom end of the sprue position and inserted into the upper injection cavity. A heating sleeve is fitted on the outer surface of the hot runner. The hot runner is a funnel-shaped runner.

[0007] In the above-mentioned injection mold for a multi-cavity terminal plastic part, an inclined guide structure is also included. The inclined guide structure includes two inclined guide pillars and two movable molding blocks. The two movable molding blocks are respectively disposed at the top of the lower mold body. The two inclined guide pillars are respectively movably disposed at the guide grooves of the movable molding blocks. The two inclined guide pillars are connected to the upper mold body.

[0008] In the above-mentioned injection mold for a multi-cavity terminal plastic part, the lower mold specifically has a flow channel on its inner side, the flow channel forms a flow passage at the bottom of the lower injection cavity, and an inlet valve and an outlet valve are respectively provided at both ends of the flow channel.

[0009] In the above-mentioned injection mold for a multi-cavity terminal plastic part, a mold opening connecting plate is installed in the middle of the top of the mold base plate, and a mold opening connecting rod is provided at the top of the mold opening connecting plate, which extends into the lower injection cavity.

[0010] In the above-mentioned multi-cavity injection mold for terminal plastic parts, the upper mold body is provided with multiple terminal forming cavities one, and the lower mold body is provided with multiple terminal forming cavities two corresponding to the terminal forming cavities one.

[0011] In the above-mentioned multi-cavity injection mold for terminal plastic parts, the bottom end of the lower mold body is bolted to two mold support seats, the mold base plate is located at the bottom end of the lower mold body through the two mold support seats, and the mold top plate is bolted to the top of the upper mold body.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model relates to a multi-cavity injection mold for terminal plastic parts. By installing a heating sleeve on the outer surface of the hot runner, and setting the runner of the hot runner as a funnel, the incoming molten material can be heated, so that the surface of the hot runner has a certain temperature, avoiding the cooling phenomenon of the molten material due to contact with the low temperature state, effectively avoiding blockage. In addition, the funnel shape setting facilitates better discharge of molten material. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a multi-cavity injection mold for wiring terminal plastic parts according to the present invention.

[0015] Figure 2 This is a top view schematic diagram of the lower mold of a multi-cavity injection mold for a terminal block plastic part according to this utility model.

[0016] Figure 3 This is a schematic diagram of the mold opening connection plate structure of a multi-cavity terminal plastic injection mold according to the present invention.

[0017] Figure 4 This is a schematic diagram of the hot runner structure of a multi-cavity injection mold for a terminal plastic part according to this utility model.

[0018] In the diagram: 1. Upper mold body; 2. Lower mold body; 3. Mold support base; 4. Mold base plate; 5. Mold top plate; 6. Sprue plate; 7. Upper injection cavity; 8. Lower injection cavity; 9. Angled guide pillar; 10. Movable molding block; 11. Inlet valve; 12. Runner; 13. Outlet valve; 14. Mold opening connecting plate; 15. Mold opening connecting rod; 16. Heating jacket; 17. Hot runner; 18. Trumpet runner; 19. Sprue position. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 This utility model provides a technical solution for a multi-cavity injection mold for wiring terminal plastic parts:

[0021] Example 1: The injection mold includes an upper mold body 1, a lower mold body 2, two mold support seats 3, a mold base plate 4, and a mold top plate 5. The upper mold body 1 and the lower mold body 2 are connected by mold closing. The bottom end of the upper mold body 1 is provided with an upper injection cavity 7, and the bottom end of the lower mold body 2 is provided with a lower injection cavity 8. A mold opening connecting plate 14 is installed in the middle of the top of the mold base plate 4. A mold opening connecting rod 15 is provided at the top of the mold opening connecting plate 14 and extends into the lower injection cavity 8. A gate position 19 is opened in the middle of the top of the mold top plate 5. A gate plate 6 is provided at the top of the gate position 19. A hot runner 17 is provided at the bottom of the gate position 19 and inserted into the upper injection cavity 7. A heating sleeve 16 is fitted on the outer surface of the hot runner 17. The runner of the hot runner 17 is a funnel 18.

[0022] It can heat the incoming molten material, so that the surface of the hot runner 17 has a certain temperature, avoiding the cooling phenomenon of the molten material due to contact with the low temperature state, effectively avoiding blockage, and adopting the shape of the funnel 18 to facilitate better discharge of molten material.

[0023] Example 2: The injection mold includes an upper mold body 1, a lower mold body 2, two mold support seats 3, a mold base plate 4, and a mold top plate 5. The upper mold body 1 and the lower mold body 2 are connected in a closed mold assembly. The bottom end of the lower mold body 2 is bolted to the two mold support seats 3. The mold base plate 4 is located at the bottom end of the lower mold body 2 via the two mold support seats 3. The mold top plate 5 is bolted to the top of the upper mold body 1. The bottom end of the upper mold body 1 is provided with an upper injection cavity 7, and the bottom end of the lower mold body 2 is provided with a lower injection cavity 7. Cavity 8, the top plate 5 of the mold has a gate position 19 in the middle of the top of the top of the mold. The top of the gate position 19 is provided with a gate plate 6. The bottom of the gate position 19 is provided with a hot runner 17 that is inserted into the upper injection cavity 7. It also includes an inclined guide structure, which includes two inclined guide pillars 9 and two movable molding blocks 10. The two movable molding blocks 10 are respectively provided at the top of the lower mold body 2. The two inclined guide pillars 9 are respectively movably provided at the guide groove of the movable molding block 10. The two inclined guide pillars 9 are connected to the upper mold body 1.

[0024] The inclined guide structure allows the wiring terminals to be quickly separated from the lower mold body 2 during the mold opening process.

[0025] Example 3: The injection mold includes an upper mold body 1, a lower mold body 2, two mold support seats 3, a mold base plate 4, and a mold top plate 5. The upper mold body 1 and the lower mold body 2 are connected by a mold closing mechanism. The bottom end of the lower mold body 2 is bolted to the two mold support seats 3. The mold base plate 4 is located at the bottom end of the lower mold body 2 through the two mold support seats 3. The mold top plate 5 is bolted to the top of the upper mold body 1. The bottom end of the upper mold body 1 is provided with an upper injection cavity 7, and the bottom end of the lower mold body 2 is provided with a lower injection cavity 8. A gate position 19 is opened in the middle of the top of the mold top plate 5. A gate plate 6 is provided on the top of the gate position 19. A hot runner 17 is provided at the bottom end of the gate position 19 and inserted into the upper injection cavity 7. A heating sleeve 16 is fitted on the outer surface of the hot runner 17. The runner of the hot runner 17 is a funnel-shaped channel 18. A flow channel 12 is provided on the inner side of the lower mold body 2. The flow channel 12 forms a flow channel at the bottom of the lower injection cavity 8. An inlet valve 11 and an outlet valve 13 are respectively provided at both ends of the flow channel 12.

[0026] In embodiments one to three, the upper mold body 1 is provided with multiple terminal forming cavities one, and the lower mold body 2 is provided with multiple terminal forming cavities two corresponding to the terminal forming cavities one.

[0027] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A multi-cavity injection mold for terminal plastic parts, comprising an upper mold body (1), a lower mold body (2), two mold support seats (3), a mold base plate (4), and a mold top plate (5), wherein the upper mold body (1) and the lower mold body (2) are connected in a closed mold connection, the bottom end of the upper mold body (1) is provided with an upper injection cavity (7), and the bottom end of the lower mold body (2) is provided with a lower injection cavity (8), characterized in that, The top plate (5) of the mold has a gate position (19) in the middle of its top end. The top of the gate position (19) is provided with a gate plate (6). The bottom end of the gate position (19) is provided with a hot runner (17) that is inserted into the upper injection cavity (7). The outer surface of the hot runner (17) is fitted with a heating sleeve (16). The runner of the hot runner (17) is a trumpet runner (18).

2. The injection mold for a multi-cavity terminal block as described in claim 1, characterized in that: It also includes an inclined guide structure, which includes two inclined guide pillars (9) and two movable forming blocks (10). The two movable forming blocks (10) are respectively disposed at the top of the lower mold body (2), and the two inclined guide pillars (9) are respectively movably disposed at the guide groove of the movable forming block (10). The two inclined guide pillars (9) are connected to the upper mold body (1).

3. The injection mold for a multi-cavity terminal block as described in claim 1, characterized in that: The inner side of the lower mold body (2) is provided with a flow channel (12), which forms a flow channel at the bottom of the lower injection cavity (8). An inlet valve (11) and an outlet valve (13) are respectively provided at both ends of the flow channel (12).

4. The injection mold for a multi-cavity terminal block as described in claim 1, characterized in that: A mold opening connecting plate (14) is installed at the middle of the top of the mold base plate (4), and a mold opening connecting rod (15) is provided at the top of the mold opening connecting plate (14), which extends into the lower injection cavity (8).

5. The injection mold for a multi-cavity terminal block as described in claim 1, characterized in that: The upper mold body (1) is provided with multiple terminal forming cavities I, and the lower mold body (2) is provided with multiple terminal forming cavities II corresponding to the terminal forming cavities I.

6. The injection mold for a multi-cavity terminal block as described in claim 1, characterized in that: The bottom end of the lower mold body (2) is bolted to two mold support seats (3), the mold base plate (4) is located at the bottom end of the lower mold body (2) through the two mold support seats (3), and the mold top plate (5) is bolted to the top of the upper mold body (1).

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