Adjustable glue inlet mechanism for injection mold

By designing an adjustable inlet mechanism in the injection mold, the problem of inability to adjust the number of injection mold cavity in the prior art is solved, flexible switching of mold production methods is achieved, and the convenience and adaptability of production are improved.

CN223186863UActive Publication Date: 2025-08-05LEPID AUTO PARTS (TIANJIN) CO LTD
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Patent Information

Application Number
CN202421862296.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-02
Publication Date
2025-08-05
Estimated Expiration
2034-08-02

AI Technical Summary

Technical Problem

The casting system of existing injection molds cannot adjust the number of injection mold cavity according to demand in real time, resulting in insufficient production flexibility.

Method used

An adjustable rubber inlet mechanism is designed to achieve the rotation of the gate through the cooperation of the gate insert and the top rod, and can switch between one-mode and one-mode chambers to meet the production needs of different products.

Benefits of technology

It has achieved rapid adjustment of production methods according to different needs, improved production flexibility and convenience, and met the needs of multiple varieties of small batch production.

✦ Generated by Eureka AI based on patent content.

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Abstract

The adjustable glue inlet mechanism comprises a sprue insert, the sprue insert is connected with an ejector rod, a first sprue, a second sprue and a third sprue are arranged on the sprue insert, the first sprue and the second sprue are symmetrically arranged about the center of the sprue insert, and the included angle between the third sprue and the first sprue and the included angle between the third sprue and the second sprue are 90 degrees respectively; when the sprue I and the sprue II are respectively matched with the sub-runner I and the sub-runner II, or the sprue I and the sprue II are respectively matched with the sub-runner II and the sub-runner I, one mold with two cavities is realized, and a three-way piece and a water diversion joint piece can be simultaneously formed; when the pouring gate III is matched with the sub-runner I, one mold and one cavity are realized, and the three-way part is only formed; when the pouring gate III is matched with the sub-runner II, one mold and one cavity are realized and only used for forming a water diversion joint piece; through the arrangement of the device, the direction of the glue inlet can be changed, simultaneous production or independent production of two products can be realized according to different requirements, and convenience of production adjustment when different requirements are met is realized.
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Description

Technical Field

[0001] This application relates to the technical field of injection molds, and specifically relates to an adjustable gate mechanism for an injection mold. Background Art

[0002] An injection mold is a tool in the plastic processing industry that gives plastic products a complete configuration and precise dimensions. An injection mold generally consists of three major parts: a gating system, molding parts, and structural parts. The gating system guides the plastic melt from the injection machine nozzle to the cavity. The molding parts determine the shape and dimensional accuracy of the plastic product, including the core and the cavity. The structural parts include a guiding mechanism, a demolding mechanism, a lateral parting and core-pulling mechanism, etc., which ensure the normal operation of the mold and the smooth demolding of the plastic product.

[0003] The design and manufacture of injection molds need to consider many factors, such as the properties of plastic materials, the shape and size of the product, the life of the mold, production efficiency, and cost, etc. For the existing gating system, it is usually a fixed one-cavity mold or a multi-cavity mold, and it is impossible to adjust the injection cavity in real time according to the situation. After detailed retrieval by the applicant, no technical solution that can adjust the number of injection cavities has been found.

[0004] In summary, a new technical solution is needed to solve the above technical problems. Utility Model Content

[0005] This application provides an adjustable gate mechanism for an injection mold, including a gate insert. The gate insert is connected to a ejector rod. The gate insert is provided with Gate One, Gate Two, and Gate Three. Among them, Gate One and Gate Two are symmetrically arranged about the center of the gate insert, and the included angles between Gate Three and Gate One, Gate Two are 90° respectively.

[0006] As a preferred solution, the gate insert includes an insert body. An installation hole is provided in the middle of the insert body, and the ejector rod is installed in the installation hole. Gate One, Gate Two, and Gate Three are provided at the top of the insert body.

[0007] As a preferred solution, the insert body includes a first section of the insert body. A second section of the insert body is provided at the lower part of the first section of the insert body, and the diameter of the second section of the insert body is larger than that of the first section of the insert body.

[0008] As a preferred solution, Gate One and Gate Two are respectively matched with a first runner and a second runner, or Gate One and Gate Two are respectively matched with the second runner and the first runner, or Gate Three is matched with the first runner, or Gate Three is matched with the second runner.

[0009] As a preferred solution, the first runner and the second runner are arranged on the lower cavity, and the first runner and the second runner are respectively connected to the three-way cavity and the water diversion cavity; an insert mounting hole is arranged between the first runner and the second runner, and the gate insert is installed in the insert mounting hole and can rotate along the insert mounting hole.

[0010] As a preferred solution, the insert mounting hole includes a first mounting hole, and a second mounting hole is arranged at the lower part of the first mounting hole. The diameter of the second mounting hole is larger than that of the first mounting hole. The first mounting hole is matched with one section of the insert body, and the second mounting hole is matched with the second section of the insert body.

[0011] As a preferred solution, the diameter of the first mounting hole is equal to the diameter of the first section of the insert body, and the diameter of the second mounting hole is greater than or equal to the diameter of the second section of the insert body.

[0012] As a preferred solution, the three-way cavity includes an upper three-way cavity and a lower three-way cavity, the water diversion cavity includes an upper water diversion cavity and a lower water diversion cavity. The upper three-way cavity and the upper water diversion cavity are arranged in the upper cavity, and the lower three-way cavity and the lower water diversion cavity are arranged in the lower cavity. A main runner is arranged on the upper cavity, and the end face of the upper cavity where the main runner is arranged contacts the upper end face of the gate insert.

[0013] In the case where the front and rear molds are opened in this application, when the ejector rod 1 retracts, a hex wrench or the like is used to drive the gate insert to rotate. When the first gate and the second gate are respectively matched with the first runner and the second runner, or the first gate and the second gate are respectively matched with the second runner and the first runner, two cavities in one mold are realized, and the three-way part and the water diversion joint part can be formed simultaneously; when the third gate is matched with the first runner, one cavity in one mold is realized, which is only used for forming the three-way part; when the third gate is matched with the second runner, one cavity in one mold is realized, which is only used for forming the water diversion joint part; the setting of this device can change the direction of the glue inlet, and two products can be produced simultaneously or separately according to different needs, realizing the convenience of production adjustment when meeting different needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the first angle of the gate insert;

[0015] Figure 2 It is a schematic structural diagram of the second angle of the gate insert;

[0016] Figure 3 It is a schematic structural diagram of the cooperation between the gate insert and the ejector rod;

[0017] Figure 4 It is a schematic structural diagram of the cooperation between the gate insert and the lower cavity;

[0018] Figure 5 It is a schematic structural diagram of the lower cavity;

[0019] Figure 6 It is a schematic structural diagram of a workpiece formed in the lower cavity;

[0020] Figure 7 It is a schematic structural diagram of the upper cavity;

[0021] 1. Ejector pin; 2. Gate 1; 3. Gate 2; 4. Gate 3; 5. Insert body; 6. Installation hole; 7. First section of insert body; 8. Second section of insert body; 9. Three-way part; 10. Water diversion joint part; 11. First runner; 12. Second runner; 13. Insert installation hole; 14. Three-way upper cavity; 15. Three-way lower cavity; 16. Water diversion upper cavity; 17. Water diversion lower cavity; 18. Upper cavity; 19. Lower cavity; 20. Main runner; 21. End face; 22. Upper end face. Specific implementation manners

[0022] The following combines the attached Figure 1 to the attached Figure 7 The specific implementation manners of the present utility model are described in detail. It should be noted that the specific implementation manners described herein are only for explaining and interpreting the present utility model, and are not used to limit the present utility model.

[0023] Embodiment 1:

[0024] This application provides an adjustable gate mechanism for an injection mold, which includes a gate insert. The gate insert is connected to the ejector pin 1. In this embodiment, the ejector pin 1 is used to eject the workpiece and also to prevent the injection material from flowing downward; when the front and rear molds are opened and the ejector pin 1 retracts, a hexagonal wrench or the like is used to drive the gate insert to rotate. The gate insert is provided with Gate 1 2, Gate 2 3, and Gate 3 4. The shapes and sizes of Gate 1 2, Gate 2 3, and Gate 3 4 are exactly the same. Different description methods are used to distinguish different positional relationships. Among them, Gate 1 2 and Gate 2 3 are symmetrically arranged about the center of the gate insert, and the included angles between Gate 3 4 and Gate 1 2, Gate 2 3 are 90° respectively; when using one mold with two cavities, Gate 1 2 and Gate 2 3 are aligned with the runner to be cast, and when using one mold with one cavity, Gate 3 4 is aligned with the runner to be cast. By rotating the gate insert, the conversion between one mold with one cavity and one mold with two cavities can be conveniently achieved, improving the convenience of production adjustment.

[0025] Embodiment 2:

[0026] This embodiment describes the gate insert. Specifically:

[0027] The gate insert includes an insert body 5. The insert body 5 is preferably cylindrical. An installation hole 6 is provided in the middle of the insert body 5. The ejector pin 1 is installed in the installation hole 6. Preferably, both the installation hole 6 and the ejector pin 1 are circular. Gate 1 2, Gate 2 3, and Gate 3 4 are provided at the top of the insert body 5.

[0028] More specifically: The insert body 5 includes a first segment 7 of the insert body. A second segment 8 of the insert body is provided at the lower part of the first segment 7 of the insert body, and the diameter of the second segment 8 of the insert body is larger than the diameter of the first segment 7 of the insert body.

[0029] Embodiment Three:

[0030] This application is applied to molding a three-way fitting 9 and / or a water diversion joint 10:

[0031] Specifically: The first gate 2 and the second gate 3 are respectively matched with the first sub-runner 11 and the second sub-runner 12, or the first gate 2 and the second gate 3 are respectively matched with the second sub-runner 12 and the first sub-runner 11, or the third gate 4 is matched with the first sub-runner 11, or the third gate 4 is matched with the second sub-runner 12; the first sub-runner 11 and the second sub-runner 12 are arranged on the lower cavity, and the first sub-runner 11 and the second sub-runner 12 are respectively communicated with the three-way cavity and the water diversion cavity; an insert mounting hole 13 is provided between the first sub-runner 11 and the second sub-runner 12, and the gate insert is mounted in the insert mounting hole 13 and can rotate along the insert mounting hole 13.

[0032] More specifically: The insert mounting hole includes a first mounting hole. A second mounting hole is provided at the lower part of the first mounting hole, and the diameter of the second mounting hole is larger than the diameter of the first mounting hole. The first mounting hole is matched with the first segment 7 of the insert body, and the second mounting hole is matched with the second segment 8 of the insert body; the diameter of the first mounting hole is equal to the diameter of the first segment 7 of the insert body to prevent the molten liquid from leaking into the lower mold, and the diameter of the second mounting hole is greater than or equal to the diameter of the second segment 8 of the insert body.

[0033] The three-way cavity includes an upper three-way cavity 14 and a lower three-way cavity 15. The water diversion cavity includes an upper water diversion cavity 16 and a lower water diversion cavity 17. The upper three-way cavity 14 and the upper water diversion cavity 16 are opened in the upper cavity 18. The lower three-way cavity 15 and the lower water diversion cavity 17 are opened in the lower cavity 19. A main runner 20 is opened on the upper cavity 18, and the end face 21 of the upper cavity 18 provided with the main runner 20 contacts the upper end face 22 of the insert body 5; In order to realize the molding of the three-way fitting 9 and the water diversion joint 10, corresponding inserts, side core pulling and other components are also required, which are not within the scope of protection of this application and will not be specifically described here.

[0034] In this embodiment, when the first gate 2 and the second gate 3 are respectively matched with the first sub-runner 11 and the second sub-runner 12, or the first gate 2 and the second gate 3 are respectively matched with the second sub-runner 12 and the first sub-runner 11, a two-cavity-in-one-mold operation is realized, and the three-way fitting 9 and the water diversion joint 10 can be molded simultaneously; when the third gate 4 is matched with the first sub-runner 11, a one-cavity-in-one-mold operation is realized, and only the three-way fitting 9 is molded; when the third gate 4 is matched with the second sub-runner 12, a one-cavity-in-one-mold operation is realized, and only the water diversion joint 10 is molded.

[0035] In summary, due to the adoption of the above technical solutions, when the first gate 2 and the second gate 3 are respectively matched with the first sub-runner 11 and the second sub-runner 12, or the first gate 2 and the second gate 3 are respectively matched with the second sub-runner 12 and the first sub-runner 11, a two-cavity mold is achieved, and the three-way part 9 and the water diversion joint part 10 can be formed simultaneously; when the third gate 4 is matched with the first sub-runner 11, a one-cavity mold is achieved, which is only used to form the three-way part 9; when the third gate 4 is matched with the second sub-runner 12, a one-cavity mold is achieved, which is only used to form the water diversion joint part 10; the setting of this device can change the direction of the glue inlet, and according to different requirements, two products can be produced simultaneously or produced separately, realizing the convenience of production adjustment when meeting different requirements.

[0036] The devices, connection relationships, etc. not specifically described above belong to the prior art, and the present utility model will not be specifically elaborated herein.

[0037] The standard parts used in this application document can all be purchased from the market, and can also be customized according to the records of the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art.

[0038] The preferred embodiments of this application have been described in detail above with reference to the drawings. However, this application is not limited to the specific details in the above embodiments. Within the scope of the technical concept of this application, various simple modifications can be made to the technical solutions of this application, and these simple modifications all belong to the protection scope of this application.

[0039] In addition, it should be noted that, in the case of no contradiction, the various specific technical features described in the above specific embodiments can be combined in any appropriate manner. To avoid unnecessary repetition, the various possible combination methods of this application will not be described separately.

[0040] Furthermore, any combination can be made between the various different embodiments of this application, as long as it does not violate the idea of this application, it should also be regarded as the content disclosed in this application.

Claims

1. An adjustable injection gate mechanism for an injection mold, comprising a gate insert, characterized in that: The gate insert is connected to the ejector pin (1), and is provided with a gate 1 (2), a gate 2 (3), and a gate 3 (4), wherein the gate 1 (2) and the gate 2 (3) are symmetrically arranged about the center of the gate insert, and the angles between the gate 3 (4) and the gate 1 (2) and the gate 2 (3) are 90 degrees respectively.

2. The adjustable glue inlet mechanism for an injection mold according to claim 1, characterized in that: The gate insert comprises an insert body (5), a mounting hole is provided in the middle of the insert body (5), the ejector rod (1) is installed in the mounting hole (6), and a gate 1 (2), a gate 2 (3), and a gate 3 (4) are provided on the top of the insert body (5).

3. The adjustable glue inlet mechanism for an injection mold according to claim 2, characterized in that: The insert body (5) comprises an insert body section (7), a lower portion of the insert body section (7) is provided with an insert body section (8), and the diameter of the insert body section (8) is greater than the diameter of the insert body section (7).

4. The adjustable glue inlet mechanism for an injection mold according to claim 3, characterized in that: The gate one (2) and gate two (3) are respectively matched with the branch channel one (11) and the branch channel two (12), or the gate one (2) and gate two (3) are respectively matched with the branch channel two (12) and the branch channel one (11), or the gate three (4) is matched with the branch channel one (11), or the gate three (4) is matched with the branch channel two (12).

5. The adjustable glue inlet mechanism for an injection mold according to claim 4, characterized in that: The first branch channel (11) and the second branch channel (12) are arranged on the lower cavity (19), and the first branch channel (11) and the second branch channel (12) are respectively connected to the three-way cavity and the water diversion cavity; an insert mounting hole (13) is provided between the first branch channel (11) and the second branch channel (12), and the gate insert is installed in the insert mounting hole (13) and can rotate along the insert mounting hole (13).

6. The adjustable glue inlet mechanism for an injection mold according to claim 5, characterized in that: The insert mounting hole (13) includes mounting hole 1, and mounting hole 2 is provided at the lower part of mounting hole 1. The diameter of mounting hole 2 is larger than the diameter of mounting hole 1. The mounting hole 1 cooperates with the first section (7) of the insert body, and the mounting hole 2 cooperates with the second section (8) of the insert body.

7. The adjustable glue inlet mechanism for an injection mold according to claim 5, characterized in that: The three-way cavity comprises a three-way upper cavity (14) and a three-way lower cavity (15); the water diversion cavity comprises a water diversion upper cavity (16) and a water diversion lower cavity (17); the three-way upper cavity (14) and the water diversion upper cavity (16) are arranged in the upper cavity (18); the three-way lower cavity (15) and the water diversion lower cavity (17) are arranged in the lower cavity (19); a main flow channel (20) is arranged in the upper cavity (18); and the end surface (21) of the upper cavity (18) where the main flow channel (20) is arranged contacts the upper end surface (22) of the insert body (5).