Improved structure of valve rod mold

Abstract

The utility model discloses an improved structure of a valve rod mould, which comprises an upper mould, a material pressing mould is correspondingly arranged below the upper mould, an upper cavity is correspondingly arranged in the material pressing mould, a glue injection port is further arranged on the material pressing mould, a middle plate mould is correspondingly arranged below the material pressing mould, a lower cavity and a valve rod cavity are correspondingly arranged in the middle plate mould, and the valve rod cavity is arranged in the middle plate mould. A lower mold is correspondingly arranged below the middle plate mold, a plurality of positioning grooves are correspondingly formed in the lower mold, the glue injection port is correspondingly communicated with the upper cavity and the lower cavity, and valve rod metal pieces are correspondingly arranged in the upper cavity, the lower cavity, the valve rod cavity and the positioning grooves. The valve rod positioning device is simple in structure, the size of the valve rod positioning column can be accurately positioned, meanwhile, the purpose of conveniently cleaning the positioning groove is achieved, and the qualified rate of glue injection products is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of mold equipment, in particular to an improved structure of a valve stem mold. Background Art

[0002] Molds are the various molds and tools used in industrial production to produce desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, and stamping. Simply put, a mold is a tool used to create a shaped object. This tool is composed of various parts, and different molds are composed of different parts. It primarily achieves the desired shape by changing the physical state of the material being molded.

[0003] During the use of the valve stem mold, the size of the valve stem positioning column is very demanding, and it plays a key role in opening and closing. The existing conventional mold uses the depth of the mold hole for positioning, and then performs injection and rubber coating processing. Considering that the actual production operation requires the middle plate to be lifted out to take out the product, and the template is heavy, the hole depth is placed on the lower mold when the mold is opened to reduce the labor intensity of manually lifting the middle plate. However, burrs and debris are inevitable in the production process, and there is a certain probability that they will fall into the positioning holes of the lower mold, which is difficult to find and difficult to blow clean. Due to the support of the debris, the valve stem positioning column of the finished valve stem will exceed the lower limit, resulting in the scrapping of the product, the defective product rate is high, and the cause is difficult to find. It takes a lot of effort to fully inspect the size before it can be detected, which is costly. Therefore, there is a need to provide an improved structure of the valve stem mold. Utility Model Content

[0004] In order to overcome the defects in the prior art, an improved valve stem mold structure is provided.

[0005] The utility model is achieved through the following solutions:

[0006] A valve stem mold improved structure includes an upper mold, a pressing mold correspondingly provided below the upper mold, an upper cavity correspondingly opened in the pressing mold, and a glue injection port also opened on the pressing mold, a middle plate mold correspondingly provided below the pressing mold, a lower cavity and a valve stem cavity correspondingly provided in the middle plate mold, a lower mold correspondingly provided below the middle plate mold, a plurality of positioning grooves correspondingly provided in the lower mold, the glue injection port is correspondingly connected to the upper cavity and the lower cavity, and valve stem metal parts are correspondingly provided in the upper cavity, the lower cavity, the valve stem cavity and the positioning grooves.

[0007] The glue injection port is arranged at the connection between the pressing die and the upper die.

[0008] A plurality of inwardly recessed positioning grooves are correspondingly provided in the lower die.

[0009] The positioning groove is a rectangular parallelepiped structure with one end open, and the length of the positioning groove is the same as the length of the lower mold.

[0010] The plurality of positioning grooves are correspondingly arranged in parallel.

[0011] The valve stem metal part includes a glue injection fixing part and a positioning column. The upper cavity and the lower cavity are correspondingly arranged on the outside of the glue injection fixing part. The height of the positioning column is the same as the sum of the heights of the valve stem cavity and the positioning groove.

[0012] Glue injection products are correspondingly provided between the upper cavity, the lower cavity and the glue injection fixing piece.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model provides an improved structure of a valve stem mold, which connects the areas between the positioning holes in the same row of the existing lower mold and mills them together to form a front-to-back straight positioning groove. The depth of the positioning groove ensures the original valve stem positioning size. Through the positioning groove, it is possible to directly see whether there are burrs and debris falling into the positioning area, and it can be directly and easily blown clean by compressed air, so as to achieve accurate positioning of the valve stem positioning column size, ensure good products, and reduce costs.

[0015] 2. The improved structure of the valve stem mold of the utility model is provided with a positioning groove of a rectangular structure, which is convenient for positioning the valve stem metal parts and convenient for cleaning the colloid burrs and debris, ensuring that there is no debris in the positioning groove and ensuring good quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of an improved valve stem mold structure of the utility model;

[0017] Figure 2 This is a structural diagram of the lower mold in an improved valve stem mold structure of the utility model;

[0018] Figure 3 This is a structural diagram of a valve stem metal part in an improved valve stem mold structure of the utility model;

[0019] In the figure: 1 is the upper mold, 2 is the pressing mold, 3 is the middle plate mold, 4 is the lower mold, 5 is the upper cavity, 6 is the lower cavity, 7 is the valve stem cavity, 8 is the positioning groove, 9 is the valve stem metal part, 91 is the glue injection fixing part, 92 is the positioning column, 10 is the glue injection port, and 11 is the glue injection product. DETAILED DESCRIPTION

[0020] The present invention is further described below with reference to the accompanying drawings and specific embodiments:

[0021] like Figure 1As shown, an improved valve stem mold structure includes an upper mold 1, and a pressing mold 2 is correspondingly provided below the upper mold 1. An upper cavity 5 is correspondingly opened in the pressing mold 2. A glue injection port 10 is also opened on the pressing mold 2, and the glue injection port 10 is provided at the connection between the pressing mold 2 and the upper mold 1. A middle plate mold 3 is correspondingly provided below the pressing mold 2, and a lower cavity 6 and a valve stem cavity 7 are correspondingly provided in the middle plate mold 3. A lower mold 4 is correspondingly provided below the middle plate mold 3, and a plurality of positioning grooves 8 are correspondingly provided in the lower mold 4. The glue injection port 10 is correspondingly connected to the upper cavity 5 and the lower cavity 6. Valve stem metal parts 9 are correspondingly provided in the upper cavity 5, the lower cavity 6, the valve stem cavity 7 and the positioning grooves 8. The utility model has a simple structure, which can not only accurately locate the size of the positioning column 94, but also achieve the purpose of conveniently cleaning the positioning groove, thereby ensuring the qualified rate of the injected glue products.

[0022] like Figure 2 As shown, a plurality of inwardly recessed positioning grooves 8 are provided in the lower mold 4. The positioning groove 8 is a rectangular structure with one end open, and the length of the positioning groove 8 is the same as the length of the lower mold 4. Several positioning grooves 8 are arranged in parallel. The utility model provides an improved structure of a valve stem mold, which connects the areas between the positioning holes in the same row of the existing lower mold and mills them together to form a front-to-back straight positioning groove 8. The depth of the positioning groove 8 ensures the original valve stem positioning size. Through the positioning groove, it can be directly observed to see whether there are burrs and debris falling into the positioning area, and it can be directly and easily blown clean by compressed air to achieve accurate positioning of the valve stem positioning column size, ensure good products, and reduce costs.

[0023] like Figure 3 As shown, the valve stem metal component 9 includes a glue injection fixture 91 and a positioning post 92. The upper cavity 5 and the lower cavity 6 are correspondingly arranged on the outside of the glue injection fixture 91. The height of the positioning post 92 is the same as the sum of the heights of the valve stem cavity 7 and the positioning groove 8. The present utility model achieves precise positioning of the valve stem metal component 9 by cooperating with the valve stem cavity 7 and the positioning groove 8, thereby ensuring the qualified rate of the glue injection product 11.

[0024] Glue injection products 11 are correspondingly provided between the upper mold cavity 5, the lower mold cavity 6 and the glue injection fixing member 91. In the present utility model, the middle plate mold 3 and the lower mold 4 are positioned by the valve stem metal member 9, and the glue injection port 10 injects hot glue into the upper mold cavity 5 and the lower mold cavity 6. The hot glue wraps the glue injection fixing member 91. After the glue cools, the upper mold 1 and the pressure mold 2 are opened, and the glue injection product 11 is removed to complete the glue injection process.

[0025] Although the technical solutions of the present invention have been described and listed in detail, it should be understood that it is obvious to those skilled in the art to make modifications to the above embodiments or adopt equivalent alternatives. These modifications or improvements made without departing from the spirit of the present invention are within the scope of protection required by the present invention.

Claims

1. An improved valve stem mold structure, comprising an upper mold (1), a pressing mold (2) correspondingly arranged below the upper mold (1), an upper cavity (5) correspondingly opened in the pressing mold (2), a glue injection port (10) also opened on the pressing mold (2), a middle plate mold (3) correspondingly arranged below the pressing mold (2), a lower cavity (6) and a valve stem cavity (7) correspondingly arranged in the middle plate mold (3), a lower mold (4) correspondingly arranged below the middle plate mold (3), characterized in that: A plurality of positioning grooves (8) are correspondingly arranged in the lower mold (4); the glue injection port (10) is correspondingly connected to the upper mold cavity (5) and the lower mold cavity (6); and valve stem metal parts (9) are correspondingly arranged in the upper mold cavity (5), the lower mold cavity (6), the valve stem cavity (7) and the positioning grooves (8).

2. The improved valve stem mold structure according to claim 1, characterized in that: The glue injection port (10) is arranged at the connection between the pressing die (2) and the upper die (1).

3. The improved valve stem mold structure according to claim 1, characterized in that: A plurality of inwardly recessed positioning grooves (8) are correspondingly arranged in the lower mold (4).

4. The improved valve stem mold structure according to claim 3, characterized in that: The positioning groove (8) is a rectangular parallelepiped structure with one end open, and the length of the positioning groove (8) is the same as the length of the lower mold (4).

5. The improved valve stem mold structure according to claim 4, characterized in that: The plurality of positioning grooves (8) are arranged in parallel with each other.

6. The improved valve stem mold structure according to claim 1, characterized in that: The valve stem metal part (9) comprises a glue injection fixing part (91) and a positioning column (92), the upper cavity (5) and the lower cavity (6) are correspondingly arranged on the outside of the glue injection fixing part (91), and the height of the positioning column (92) is the same as the sum of the heights of the valve stem cavity (7) and the positioning groove (8).

7. The improved valve stem mold structure according to claim 6, characterized in that: Glue injection products (11) are correspondingly provided between the upper mold cavity (5), the lower mold cavity (6) and the glue injection fixing piece (91).

Images