TWM635471U - Adjustable positioning structure of mold inserts - Google Patents

Abstract

This creation is a process of pre-fixing the insert at a proper position in the injection mold, and then injecting plastic to form it. After the mold is opened, the insert is tightly embedded in the plastic by the cooled and solidified plastic to obtain a threaded insert. The main structure includes: a corresponding male mold and a female mold, at least one positioning sleeve and a positioning rod, the positioning rod and the positioning sleeve are combined into a kit, the size of the kit depends on the size of the part, and the positioning sleeve is installed in the In the male mold, the positioning rod is fixed by the positioning sleeve, and the front end has rounded corners, which is convenient for the insert to be placed on the positioning rod. The matching size of this creative positioning kit is determined according to the size of the insert, so that the insert positioned on the plastic product can be adjusted , the structure of this creation is simple, and it can position parts of different sizes, which can reduce the cost of molds and improve the production efficiency of injection molding.

Description

Adjustable component positioning structure

This creation involves the positioning of mold inserts. It is a positioning structure that can adapt to different sizes of inserts, so that inserts can be accurately positioned on plastic products.

Insert injection molding is widely used in various industries such as automobiles, medical care, electronic products and connectors. The combination of the easy formability and elasticity of plastics and the rigidity and strength of metals can make complex and delicate metal-plastic integrated products firmly, reducing Product dimensions and weight.

Adding metal inserts to plastics can improve the strength of plastic parts. Insert injection molding increases the flexibility of product design and provides new possibilities for the combination of plastics, metals and other parts.

The placement of inserts often complicates the mold structure, prolongs the injection molding cycle, and increases manufacturing costs. In addition, the thermal expansion coefficients of inserts and plastics are inconsistent, which easily causes internal stress in the final product and causes product cracks. It is especially noticeable in injection molding.

The insert must be well fixed in the mold, otherwise it is easy to be displaced or deformed under the impact of the plastic, and the poor position will cause poor precision or scrap of the injection product.

Commonly used materials for inserts include copper, aluminum, steel, hard heterogeneous plastic parts, ceramics, glass, etc. Among them, brass is not rusty, corrosion-resistant, easy to process and moderately priced, and is a common material for inserts.

When designing the shape of the insert, try to adopt a circular or axisymmetric shape, and no sharp or acute angles are allowed, so as to facilitate uniform shrinkage and prevent local stress or even stress concentration.

Insert positioning is to design a positioning rod in the mold. The positioning rod is designed for a single insert and is not interchangeable. When the plastic insert is replaced, the mold must be redesigned, which increases the mold manufacturing cost.

The purpose of this creation is to provide an adjustable mold insert positioning structure, so that the insert can be correctly positioned on the plastic product. This creation is mainly composed of a positioning sleeve and a positioning rod. The dimensions of the positioning sleeve and the positioning rod are designed in various sizes. Or with a complete kit, the engineer can choose a suitable size kit according to the size of the part. The kit is installed in the male mold. The male mold corresponds to the female mold to ensure that the part is positioned stably during injection. There is a rounded corner at the front end of the positioning rod. It is convenient for the insert to be set on the rod, and the engineer can achieve the positioning function of different sizes of inserts by replacing the positioning sleeve and the positioning rod.

The positioning sleeve of this creation includes a body and a base. There is an inner hole in the body, and there are step holes on the upper and lower sides. The inner hole is matched with the positioning rod. for fixing.

The locating rod of the present invention includes a body and a base. The body has various sizes and cooperates with the inner hole of the locating sleeve.

The outer size of the positioning sleeve of this creation is fixed, and it is matched with the male mold. There is a base at one end to cooperate with the step hole of the male mold for fixing. There are various internal dimensions of the positioning sleeve, which are matched with the positioning rod body and used for positioning parts of different sizes. .

The positioning sleeve and the positioning rod of this creation are matched as a kit, and the size of the kit has multiple types, depending on the size of the parts. The front end of the positioning rod has a rounded corner, which is convenient for the insert to be placed on the rod.

The matching size of this creative positioning kit depends on the internal and external dimensions of the molded parts. There are various designs. The positioning sleeve and positioning rod in the male mold can be replaced. When producing different molded parts, only need to replace the positioning kit to achieve Parts positioning function, and the adjustable part positioner function.

1: Pouring bushing

2: upper mold seat

3: master model

4: male model

5: Lower bearing plate

6: Foot block

7: Lower mold base

8: positioning rod

9: positioning sleeve

10: Parts

11: Injection product

The first picture is a schematic diagram of the installation of the adjustable mold for the positioning structure of the creation.

The second picture is a combination diagram of the adjustable positioning structure of this creation.

The third picture is the parts diagram of the adjustable insert positioning structure of this creation.

The schematic diagram of mold installation for the adjustable positioning structure of this creation is shown in the first figure. There is a step hole in the middle of the upper mold base 2, which is used to install the pouring bush 1. There is a tapered hole inside to connect the sprue, and it is installed in the mother mold 3. , The female mold 3 is fixed on the upper mold base 2 with bolts, corresponding to the male mold 4, forming a mold cavity of the injection product 11.

In this invention, the adjustable socket positioning structure, the male mold 4 corresponds to the female mold 3, and at least one set of positioning kits are installed in the male mold. In the mold 4, the lower bearing plate 5 is connected to the footing block 6, and the footing block is connected to the lower mold base 7. There is a space between the lower bearing plate 5 and the lower mold base 7, which is used to install the ejector plate and the ejector rod, so that the ejector can be ejected after injection molding. Exit products.

The combination diagram of the positioning structure of the adjustable socket part of this creation is shown in the second figure. It is mainly composed of a positioning rod 8 and a positioning sleeve 9. The positioning rod 8 and the positioning sleeve 9 form a positioning kit (8, 9). The size of the kit is the same as that of the positioning sleeve. Part 10 is related and has various designs. According to the inner and outer diameters of part 10, suitable positioning rod 8 and positioning sleeve 9 can be selected and installed in male mold 4. There is a rounded corner at the front end of positioning rod 8, which is convenient for placing 10 inserts. On the rod, the positioning rod 8 has a base, which cooperates with the positioning sleeve 9 for fixing.

As shown in the third figure of the adjustable locating structure of this creation, the locating rod 8 has a base 83, which cooperates with the 9-stage hole 93 of the positioning sleeve. 83, to facilitate inserting of part 10; positioning sleeve 9 has a base 94, which cooperates with male mold 4 for fixing, and there is a through hole 92 in it to cooperate with positioning rod body 82, and there is a first-order hole 91 on it, and the aperture size is the same as that of the positioning The covering size of each piece is the same, and the depth is the same as the height of piece 10, and piece 10 is the same There are embossing or grooves 102 on the surface, so that the plastic can tightly wrap the fixing parts.

In this invention, the adjustable positioning structure of the mounting part is designed. The positioning rod 8 and the positioning sleeve 9 are designed as a positioning kit (8, 9), and various sizes are designed. When in use, the suitable positioning kit is selected according to the size of the mounting part, and the same mold can be used for different sizes of mounting parts. Carry out positioning and injection molding to achieve the purpose of reducing mold costs and improving production efficiency.

To sum up, the adjustable locating structure of this creation has the advantages of simple structure, easy manufacture, and the adjustable function of the locating part for injection. Compared with the traditional single locating design, the positioning structure of this creation has a wider range of applications In addition, the positioning method of male and female is designed according to the functional requirements, which can be applied to the positioning of complex-shaped components. Therefore, the positioning structure of the components in this creation has extremely high practicability and is an innovation with industrial application value. submit application. This case was modified in various ways by people who are familiar with this technology, but all of them do not break away from the intended protection of the appended patent scope.

8: positioning rod

9: positioning sleeve

10: Parts

Claims (4)

An adjustable component positioning structure, comprising: a male model; A female die; corresponding to the male die; At least one positioning kit is installed in the male mold. The positioning kit is matched with a positioning rod and a positioning sleeve. The positioning kit is fixed in the male mold with a lower bearing plate. Depending on the size of the insert, the positioning kit can be replaced in the male mold to position and produce injections of inserts of different sizes. The adjustable positioning structure of the mounting part as described in item 1 of the scope of the patent application, the size of the positioning rod body is the same as the threaded hole of the mounting part, so that the mounting part can be placed in a stable position without shaking, and the front end of the positioning rod has a rounded corner, which facilitates the mounting enter. As for the adjustable positioning structure described in item 1 of the scope of the patent application, there is a round hole in the center of the positioning sleeve, which cooperates with the positioning rod to form a positioning function. Holes are used to install sockets and form spaces for injection fillers. For the adjustable positioning structure described in Item 1 of the scope of the patent application, the outer diameter of the positioning sleeve is fixed, and the size of the inner hole has different designs. There is a base underneath, which cooperates with the male mold, and is used for fixing the positioning sleeve.

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