Positioning structure of embedded injection nut in mold

By designing the bumps and inner needle sleeve structure in the mold, the problem of the nut floating or deflection during the molding process is solved, ensuring that the nut is fixed, avoiding overturning and overflowing of glue, and achieving material saving effect.

CN119261071APending Publication Date: 2025-01-07MITAC PRECISION TECH(KUNSHAN) CORP
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Patent Information

Application Number
CN202310838199.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-07-04
Publication Date
2025-01-07

AI Technical Summary

Technical Problem

When the product is molded with embedded nuts, the nuts are prone to float or deflection, resulting in overturning or impacting, and there is glue leakage at the bottom of the hole after forming.

Method used

Design a positioning structure for embedded injection nuts in molds. By setting bumps on the female mold kernel to position and fix the nuts, and using the cooperation of the inner needle and sleeve, the nuts are fixed during injection molding. , avoid the occurrence of adverse phenomena, and at the same time, the bump position can reduce the use of materials.

Benefits of technology

Effectively prevent the nut from floating or deflecting during the molding process, avoiding the phenomenon of overturning and overflowing of glue, and at the same time, material saving is achieved through the design of the convex point position.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a positioning structure for embedding and injecting a nut in a mold, comprising: a female mold core, which is provided with a salient point at the contact part with the nut, and the salient point is used for positioning the nut when the nut is embedded in a product and can play a role in stealing glue; the male mold core and the female mold core are assembled to form a product, a nut can be firstly placed on the inner needle before the product is formed, the nut is pressed and fixed on the inner needle through the convex points on the female mold core after the mold is assembled, finally, the product is formed through glue injection, and at the moment, the nut is embedded in a hole of the product. One end of the inner needle is fixed on a bottom plate in the mold, and the other end is used for fixing a nut; the mold has the beneficial effects that the positioning convex point is additionally arranged at the contact part of the female mold core and the nut, so that the nut is pressed and fixed by virtue of the convex point after the female mold core and the male mold core are closed, and the nut is fixed on the inner needle, so that a product is free from badness when the nut is embedded and formed; and the convex points can be arranged at the positions of the round holes in the product, so that the glue stealing effect can be realized.
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Description

[Technical field]

[0001] The invention relates to the technical field of mold mechanisms, in particular to a positioning structure for an embedded nut in a mold. [Background technology]

[0002] In such Figure 1 When the product 1 shown is being molded with an embedded nut 2, the nut 2 often floats or deflects after being subjected to force during injection molding, causing the nut 2 to flip over or even hit the mold, and glue overflowing at the bottom of the hole 3 of the product 1 after molding.

[0003] In view of this, it is necessary to provide a positioning structure for the embedded nut in the mold to solve the above problems. [Summary of the invention]

[0004] The technical problem to be solved by the present invention is that when the embedded nut is formed, the nut often floats or deflects after being subjected to force during injection molding, causing the nut to flip over or even hit the mold, and the product to overflow at the bottom of the hole after molding. Therefore, the present invention provides a positioning structure for embedded nut in the mold to solve the above problem.

[0005] The solution of the present invention to solve the technical problem is: a positioning structure for an embedded nut in a mold, comprising:

[0006] A female mold core, wherein the female mold core is provided with a convex point at the contact point with the nut, and the convex point is used to position the nut when the nut is embedded in the product, and can also be used to steal glue (referring to reducing material);

[0007] The male mold core is molded with the female mold core to form a product. Before the product is formed, the nut can be placed on the inner needle. After the mold is closed, the nut is pressed and fixed on the inner needle through the convex point on the female mold core. Finally, the product is molded by injection molding. At this time, the nut is buried in the hole of the product.

[0008] An inner needle, one end of which is fixed on the bottom plate in the mold, and the other end is used to fix the nut;

[0009] The sleeve is fixed on the ejector plate and then sleeved on the inner needle. When the product is ejected after molding, the sleeve moves with the ejector plate. At this time, the inner needle does not move because it is fixed on the bottom plate in the mold, so the sleeve can eject the nut wrapped on the inner needle with the product.

[0010] Preferably, the protrusions on the side of the mother mold core are processed integrally with the mother mold core by a CNC machine tool.

[0011] The beneficial effect of the present invention is that, by adding positioning protrusions at the nut corresponding to the female mold core in the mold, the nut is pressed and fixed by the protrusions after the female mold core and the male mold core are molded together, so that the nut is fixed on the inner needle, and no defects are produced when the embedded nut is formed in the product, and the protrusions can be used to form round holes on the product, which can play the role of stealing glue.

Brief Description of the Drawings

[0012] Figure 1 It is a structural schematic diagram of a known product.

[0013] Figure 2 The present invention is a structural schematic diagram of a positioning structure of an embedded nut in a mold.

[0014] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0015] Figure 4 It is a structural schematic diagram of the product in the present invention. [Specific implementation method]

[0016] To further illustrate the technical means and effects adopted by the present invention, the following is a detailed description in conjunction with the embodiments of the present invention and the accompanying drawings.

[0017] The present invention provides a positioning structure for an embedded nut in a mold, comprising:

[0018] A female mold core 101, wherein the female mold core 101 is provided with a convex point 102 at a contact point with the nut 2, wherein the convex point 102 is used to position the nut 2 when the nut 2 is embedded in the product 20, and can also be used to steal glue (referring to reducing material);

[0019] The male mold core 103 is molded with the female mold core 101 to form the product 20. Before the product 20 is formed, the nut 2 can be placed on the inner needle 104. After the mold is closed, the nut 2 is pressed and fixed on the inner needle 104 through the protrusion 102 on the female mold core 101. Finally, the product 20 is injection molded. At this time, the nut 2 is buried in the hole 30 of the product.

[0020] An inner needle 104, one end of which is fixed on a bottom plate 106 in the mold, and the other end 104 is used to fix the nut 2;

[0021] The sleeve 105 is fixed on the ejector plate 107 and then sleeved on the inner needle 104. When the product 20 is ejected after being formed, the sleeve 105 moves along with the ejector plate 107. At this time, the inner needle does not move because it is fixed on the bottom plate 106 in the mold, so the sleeve 105 ejects the nut 2 wrapped on the inner needle 104 with the product 20.

[0022] The protrusions 102 on the side of the mother mold core 101 are processed integrally with the mother mold core 101 by a numerically controlled machine tool.

[0023] The beneficial effect of the present invention is that, by adding a positioning protrusion 102 at the nut 2 corresponding to the female mold core 101 in the mold, the female mold core 101 and the male mold core 103 are molded together, and the nut 2 is pressed and fixed by the protrusion 102, so that the nut 2 is fixed on the inner needle 104, so that there is no defect in the product 20 when the embedded nut 2 is formed, and the protrusion 102 can be formed on the product 20. The circular hole 40 position can be formed, which can play the role of stealing glue.

[0024] It should be pointed out that the present invention is not limited to the above-mentioned implementation modes, and any simple modifications, equivalent changes and modifications made to the above-mentioned embodiments by any technician familiar with the profession based on the technical solution of the present invention fall within the protection scope of the present invention.

Claims

1. A positioning structure for an embedded nut in a mold, characterized in that: include: A female mold core, wherein the female mold core is provided with a convex point at the contact point with the nut, and the convex point is used to position the nut when the nut is embedded in the product, and can also be used to steal glue; The male mold core is molded with the female mold core to form a product. Before the product is formed, the nut can be placed on the inner needle. After the mold is closed, the nut is pressed and fixed on the inner needle through the convex point on the female mold core. Finally, the product is molded by injection molding. At this time, the nut is buried in the hole of the product. An inner needle, one end of which is fixed on the bottom plate in the mold, and the other end is used to fix the nut; The sleeve is fixed on the ejector plate and then sleeved on the inner needle. When the product is ejected after molding, the sleeve moves with the ejector plate. At this time, the inner needle does not move because it is fixed on the bottom plate in the mold, so the sleeve can eject the nut wrapped on the inner needle with the product.

2. A positioning structure for an embedded nut in a mold as claimed in claim 1, characterized in that: The convex points on the side of the female mold core are processed integrally with the female mold core by a numerically controlled machine tool.