Nut insert positioning mechanism and injection mold

Abstract

The nut insert positioning mechanism comprises a first module and a second module which can be relatively close to each other and far away from each other, a first mounting hole is formed in the first module, and the first mounting hole is provided with an outer port for mounting a nut insert; a first insert ejector rod used for ejecting the nut insert out of the outer port is movably arranged in the first mounting hole in a penetrating mode, a second insert ejector rod is arranged on the second module, and the first insert ejector rod and the second insert ejector rod are matched to position the nut insert. The nut insert positioning device is reasonable in structural arrangement, can effectively position a nut insert, and is simple to operate, so that the production quality of injection molded parts is improved.

Description

Technical Field

[0001] The utility model belongs to the field of injection mold structure design, and in particular relates to a nut insert positioning mechanism and an injection nut. Background Art

[0002] In order to make plastic products more reliable when assembled with screws, metal nut inserts are provided in the plastic products, and the nut inserts are usually injection molded as one piece with the plastic products. When producing plastic products by injection molding, the nut insert needs to be positioned in the injection mold. Patent document CN220242217U discloses a positioning insert and an injection mold, wherein the positioning insert is used to position the nut insert, which is provided with an external thread. When in use, the nut insert needs to be first installed on the positioning insert in a screw connection manner, and then the positioning insert is loaded into the mold for mold closing and injection molding. After the injection molding is completed, the positioning insert needs to be removed from the plastic product. The solution in the above patent document is relatively cumbersome to operate and has low work efficiency. Utility Model Content

[0003] In view of the deficiencies pointed out in the background technology, the purpose of the utility model is to provide a nut insert positioning mechanism for facilitating the positioning of a nut insert and an injection mold using the same.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a nut insert positioning mechanism, comprising a first module and a second module which can be relatively close to and far away from each other, wherein the first module is provided with a first mounting hole, the first mounting hole has an external port for the nut insert to be installed, a first insert push rod is movably inserted into the first mounting hole and is used to push the nut insert out of the external port, the second module is provided with a second insert push rod, and the first insert push rod and the second insert push rod cooperate to position the nut insert.

[0006] In some embodiments, the end of the second insert push rod is provided with a positioning column suitable for being inserted into the nut insert and a stop step provided at the root of the positioning column.

[0007] In some embodiments, the end of the positioning post is a tapered structure.

[0008] In some embodiments, it further includes a driving block disposed in the first module, the driving block is provided with an inclined driving surface, and when the driving block moves relative to the first module, the driving surface pushes the first insert push rod to move outward.

[0009] In some embodiments, an installation cavity is provided in the first module, the installation cavity is connected to the inner end of the first installation hole, the driving block extends into the installation cavity, and the driving surface is arranged toward the first installation hole; the driving block is movably limitedly connected to the first module through a slide rail mechanism.

[0010] In some embodiments, the external port is arranged to be tilted upward or upward.

[0011] The utility model also provides an injection mold, comprising the nut insert positioning mechanism mentioned above.

[0012] The utility model has the positive effects: by adopting the structure of the utility model, when in use, the nut insert is placed in the outer port of the first mounting hole when the mold is opened, and then the mold is closed and the nut insert is gradually ejected from the outer port by the first insert ejector rod, at the same time, the second insert ejector rod approaches the nut insert, and the nut insert is positioned outside the first module by the cooperation of the first insert ejector rod and the second insert ejector rod, and then the nut insert and the plastic product are injection molded as one by injection molding, and the first insert ejector rod is separated from the second insert ejector rod after the mold is opened. The whole process is simple to operate, which is conducive to improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 A cross-sectional view of the nut insert positioning mechanism in the utility model;

[0015] Figure 2 for Figure 1 A magnified partial view of point A in the middle.

[0016] The reference numerals shown in the figure are: 1-first module; 11-first mounting hole; 12-external port; 13-first insert push rod; 14-mounting cavity; 2-second module; 21-second insert push rod; 22-positioning column; 23-resistance step; 3-driving block; 31-driving surface; 4-nut insert. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present utility model are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In the present utility model, unless otherwise clearly specified and limited, the terms "connection", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0019] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0020] The utility model provides a nut insert positioning mechanism, the structure of which is as follows Figure 1 and Figure 2As shown, it includes a first module 1 and a second module 2 which can be relatively close to and far away from each other, a first mounting hole 11 is provided in the first module 1, the first mounting hole 11 has an outer port 12 for the nut insert 4 to be installed, a first insert push rod 13 for pushing the nut insert 4 out of the outer port 12 is movably penetrated in the first mounting hole 11, and a second insert push rod 21 is provided on the second module 2, and the first insert push rod 13 cooperates with the second insert push rod 21 to position the nut insert 4. By adopting the structure in the present embodiment, when in use, the nut insert 4 is placed into the outer port 12 of the first mounting hole 11 when the mold is opened, and then the mold is closed and the nut insert 4 is gradually ejected from the outer port 12 by the first insert push rod 13. At the same time, the second insert push rod 21 approaches the nut insert 4, and the nut insert 4 is positioned outside the first module 1 by the cooperation of the first insert push rod 13 and the second insert push rod 21. Then, the nut insert 4 and the plastic product are injection molded as one through injection molding. After the mold is opened, the first insert push rod 13 and the second insert push rod 21 are separated. The whole process is simple to operate, which is conducive to improving production efficiency.

[0021] Furthermore, in order to facilitate the second insert push rod 21 to position the nut insert 4, a positioning column 22 suitable for inserting into the nut insert 4 and a stop step 23 provided at the root of the positioning column 22 are provided at the end of the second insert push rod 21. When positioning the nut insert 4, the positioning column 22 is inserted into the nut insert 4, and the stop step 23 supports the nut insert 4, thereby achieving reliable positioning. In order to facilitate the insertion of the positioning column 22 into the nut insert 4, the end of the positioning column 22 can be further provided with a tapered structure.

[0022] In some embodiments, in order to control the first insert push rod 13 to push the nut insert 4 out of the external port 12, a driving block 3 is further arranged in the first module 1, and an inclined driving surface 31 is provided on the driving block 3. When the driving block 3 moves relative to the first module 1, the driving surface 31 pushes the first insert push rod 13 to move outward. When the driving block 3 reverses and resets, the first insert push rod 13 can move toward the driving block 3, thereby making space at the external port 12 for the nut insert 4 to be placed in. The driving block 3 can move under the drive of an external driving mechanism (such as a cylinder).

[0023] In some embodiments, a mounting cavity 14 is provided in the first module 1, the mounting cavity 14 is connected to the inner end of the first mounting hole 11, the driving block 3 extends into the mounting cavity 14, and the driving surface 31 is arranged toward the first mounting hole 11; the driving block 3 is connected to the first module 1 by a sliding rail mechanism for movement and limitation. Exemplarily, the sliding rail mechanism can adopt such a structure: comprising a slide groove provided on the first module 1 and a slide rail provided on the driving block 3, and the movement and limitation of the driving block 3 are realized by the cooperation between the slide rail and the slide groove, and the position accuracy of the driving block 3 can be ensured.

[0024] In some embodiments, the external port 12 is tilted upward or arranged upward, so that the first insert push rod 13 is tilted or vertically arranged in the first mounting hole 11, so that when the driving block 3 is reset, the first insert push rod 13 moves toward the driving block 3 under the action of its own gravity.

[0025] Another embodiment of the utility model provides an injection mold, comprising the above-mentioned nut insert positioning mechanism, and the injection mold has all the advantages of the above-mentioned nut insert positioning mechanism.

[0026] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A nut insert positioning mechanism, comprising a first module (1) and a second module (2) which can be relatively close to and away from each other, characterized in that: The first module (1) is provided with a first mounting hole (11), the first mounting hole (11) having an outer port (12) capable of being inserted into a nut insert (4), a first insert push rod (13) for pushing the nut insert (4) out of the outer port (12) being movably inserted into the first mounting hole (11), and a second insert push rod (21) being provided on the second module (2), the first insert push rod (13) and the second insert push rod (21) cooperating to position the nut insert (4).

2. The nut insert positioning mechanism according to claim 1, characterized in that: The end of the second insert push rod (21) is provided with a positioning column (22) suitable for being inserted into the nut insert (4) and a stop step (23) provided at the root of the positioning column (22).

3. The nut insert positioning mechanism according to claim 2, characterized in that: The end of the positioning column (22) is a conical structure.

4. The nut insert positioning mechanism according to claim 1, characterized in that: It also comprises a driving block (3) arranged in the first module (1), the driving block (3) being provided with an inclined driving surface (31), and when the driving block (3) moves relative to the first module (1), the driving surface (31) pushes the first insert push rod (13) to move outward.

5. The nut insert positioning mechanism according to claim 4, characterized in that: The first module (1) is provided with a mounting cavity (14), the mounting cavity (14) being in communication with the inner end of the first mounting hole (11), the driving block (3) extending into the mounting cavity (14), and the driving surface (31) being arranged toward the first mounting hole (11); the driving block (3) is movably limitedly connected to the first module (1) via a slide rail mechanism.

6. The nut insert positioning mechanism according to claim 1, characterized in that: The external port (12) is arranged to be inclined upward or upward.

7. An injection mold, characterized in that: A nut insert positioning mechanism comprising the nut insert positioning mechanism described in any one of claims 1 to 6.

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