Plug shell injection mold

Abstract

The utility model discloses a plug shell injection mold which comprises an ejector pin plate, an ejector pin, an inclined guide rod, a sliding block, a front mold insert, a panel, an upper mold plate, a lower mold plate, square iron and a bottom plate, the panel, the upper mold plate, the lower mold plate, the square iron and the bottom plate are sequentially arranged from top to bottom, a front mold core is arranged below the upper mold plate, a rear mold core is arranged above the lower mold plate, and the front mold core and the rear mold core are correspondingly arranged and form a cavity. The sliding block is located on the periphery of the cavity and matched with the lower mold plate, one end of the inclined guide rod is fixed to the upper mold plate, the other end of the inclined guide rod is matched with the sliding block, a compression spring is arranged between the sliding block and the rear mold core, one end of the compression spring abuts against the sliding block, and the other end of the compression spring abuts against the rear mold core. In the demolding process, the sliding block can be pushed outwards through the rebound effect of the compression spring and the guide effect of the inclined guide rod, so that the sliding block can be rapidly separated from a product, the product cannot be scratched by the sliding block, the forming quality of the product is guaranteed, and the yield is increased; the whole mold is simple in structure, and the manufacturing cost of the mold is reduced.

Description

Technical Field

[0001] The utility model belongs to an injection mold, in particular to an injection mold for a plug shell. Background Art

[0002] The plug shell is provided with many jacks, and in order to facilitate the plug insertion and removal, there are some protrusions or barb structures on the outside of the shell with irregular shapes. Therefore, the product is not easy to be ejected after injection molding, and the defective rate of the product after demolding is relatively high. In order to achieve the smooth ejection of such products, multiple layers of templates are added to the mold. When demolding, the mold is demolded layer by layer. The overall structure is relatively complex, which increases the manufacturing cost of the mold. Utility Model Content

[0003] The purpose of the present utility model is to provide a plug housing injection mold capable of solving at least one of the above problems.

[0004] According to one aspect of the utility model, a plug housing injection mold is provided, comprising an ejector plate, an ejector, an inclined guide rod, a slider, a front mold insert, and a panel, an upper mold plate, a lower mold plate, a square iron and a bottom plate arranged in sequence from top to bottom, a front mold core is provided below the upper mold plate, a rear mold core is provided above the lower mold plate, the front mold core and the rear mold core are arranged correspondingly and form a cavity, one end of the front mold insert is fixed between the upper mold plate and the front mold core, and the other end extends into one side of the cavity, the ejector plate is provided on the inner side of the square iron, one end of the ejector is fixed on the ejector plate, and the other end can penetrate the lower mold plate and then extend into the cavity, the slider is located on the outer periphery of the cavity and cooperates with the lower mold plate, one end of the inclined guide rod is fixed on the upper mold plate, and the other end cooperates with the slider, a compression spring is provided between the slider and the rear mold core, one end of the compression spring abuts against the slider, and the other end abuts against the rear mold core.

[0005] The beneficial effects of the utility model are as follows: by providing a slider on the periphery of the cavity, the corresponding structure of the plug shell and the outer side of the plug shell can be completed through the cooperation of the slider and the cavity during injection molding of the product; during demolding, the slider can be pushed outward by the rebound effect of the compression spring and the guiding effect of the inclined guide rod, so that the slider can be quickly separated from the product, so that the slider will not scratch the product, and it is convenient for the ejector to smoothly eject the product from the cavity, thereby ensuring the molding quality of the product and improving the yield rate; and the entire mold structure is simple, reducing the manufacturing cost of the mold.

[0006] In some embodiments, the slider includes a first movable block and a second movable block. The second movable block is fixed to the inner side of the first movable block and corresponds to the mold cavity. The first movable block cooperates with the lower mold plate, and the other end of the inclined guide rod cooperates with the first movable block. Thus, through the various parts of the slider, the cooperation between the slider, the inclined guide rod, and the mold cavity is facilitated. Separating the slider into two parts for assembly reduces the manufacturing difficulty of the entire slider, thereby helping to reduce manufacturing costs.

[0007] In some embodiments, a mounting groove is provided at the bottom of the first moving block, and the compression spring is located in the mounting groove and abuts against the rear mold core. Thus, by providing the mounting groove, the installation of the compression spring can be facilitated.

[0008] In some embodiments, a sliding groove is provided on the upper end surface of the lower template, and stop plates are provided on both side walls of the sliding groove. The bottom of the first movable block is located within the sliding groove, and the stop plates correspond to both sides of the first movable block. Thus, the sliding groove can guide the movement of the first movable block, and the stop plates limit the position of the first movable block, thereby improving the smoothness of the movement of the first movable block.

[0009] In some embodiments, the plug housing injection mold further includes a return spring and a mounting rod. One end of the mounting rod is fixed to the ejector plate, and the other end is capable of passing through the lower mold plate. The return spring is sleeved on the mounting rod, with one end of the return spring abutting the ejector plate and the other end abutting the lower mold plate. Thus, the return spring facilitates the return of the ejector plate and ejector pin under the action of the return spring's rebound force.

[0010] In some embodiments, the plug housing injection mold further includes a guide post, one end of which is fixed to the panel and the other end of which is capable of passing through the upper and lower mold plates and extending into the square iron. Thus, the guide post can guide the movement of the corresponding mold plates, ensuring the injection molding accuracy of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a structural diagram of the plug housing injection mold of the utility model in the mold closing state;

[0012] Figure 2 This is a schematic diagram of the top view of the plug housing injection mold of the utility model;

[0013] Figure 3 yes Figure 2 AA cross-sectional structural diagram;

[0014] Figure 4 This is a schematic structural diagram of part of the structure of the injection mold of the plug housing of the utility model;

[0015] Figure 5It is a structural schematic diagram of a product obtained by injection molding the plug housing injection mold of the utility model. DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below with reference to the accompanying drawings.

[0017] Reference Figures 1 to 4 . The injection mold of the plug housing includes a pin plate 1, a pin 2, an inclined guide rod 3, a slider 4, a front mold insert 5, and a panel 6, an upper mold plate 7, a lower mold plate 8, a square iron 9 and a bottom plate 10 arranged in sequence from top to bottom. A front mold core 20 is provided below the upper mold plate 7, and a rear mold core 30 is provided above the lower mold plate 8. The front mold core 20 and the rear mold core 30 are arranged correspondingly to form a cavity. One end of the front mold insert 5 is fixed between the upper mold plate 7 and the front mold core 20, and the other end extends into one side of the cavity. The pin plate 1 is provided on the inner side of the square iron 9. One end of the pin 2 is fixed on the pin plate 1, and the other end can penetrate the lower mold plate 8 and then extend into the cavity. The slider 4 is located on the outer periphery of the cavity and cooperates with the lower mold plate 8. One end of the inclined guide rod 3 is fixed on the upper mold plate 7, and the other end cooperates with the slider 4. A compression spring 40 is provided between the slider 4 and the rear mold core 30. One end of the compression spring 40 abuts against the slider 4, and the other end abuts against the rear mold core 30.

[0018] By providing the compression spring 40, after the injection molding of the plug housing is completed and the external clamping force is removed, the slider 4 can be pushed outward by the rebound force of the compression spring 40, thereby preventing the slider 4 from sticking to the molded product, facilitating the subsequent complete separation of the slider 4 from the product, and effectively preventing the slider 4 from scratching the surface of the molded product, thereby improving the product yield rate.

[0019] There are two cavities in the plug housing injection mold, which is convenient for molding two plug housings (such as Figure 5 The front mold insert 5 is T-shaped, with its large end embedded in the top of the front mold 20 and its small end facing downward to engage the mold cavity. The upper mold plate 7 presses against the front mold insert 5 to secure it.

[0020] The slider 4 includes a first movable block 41 and a second movable block 42. The second movable block 42 is fixed to the inner side of the first movable block 41 and corresponds to the mold cavity. The first movable block 41 cooperates with the lower mold plate 8, and the other end of the inclined guide rod 3 cooperates with the first movable block 41. The second movable block 42 and the first movable block 41 are fixed by screws to ensure that they maintain consistent movement.

[0021] A mounting groove is provided at the bottom of the first moving block 41 . The compression spring 40 is located in the mounting groove and abuts against the rear mold core 30 .

[0022] The upper end surface of the lower template 8 defines a sliding groove 81, with the side walls of the sliding groove 81 secured to the limit plates 50 by screws. The bottom of the first movable block 41 is located within the sliding groove 81, and the limit plates 50 correspond to the sides of the first movable block 41. Specifically, the top of the limit plate 50 is formed with a folded edge toward one side of the first movable block 41. The two sides of the bottom end of the first movable block 41 are inserted between the bottom end of the sliding groove and the folded edge of the limit plate 50, thereby limiting the first movable block 41 through the limit plate 50.

[0023] By providing the sliding groove 81, the first moving block 41 can slide within the range of the sliding groove 81, so that the second moving block 42 can accurately move to the relative position of the cavity when the mold is closed, thereby ensuring the injection molding quality of the product.

[0024] The plug housing injection mold also includes a return spring 60 and a mounting rod 70. One end of the mounting rod 70 is fixed to the ejector plate 1, and the other end can pass through the lower template 8. The return spring 60 is sleeved on the mounting rod 70. One end of the return spring 60 abuts against the ejector plate 1, and the other end abuts against the lower template 8.

[0025] The plug housing injection mold further includes a guide post. One end of the guide post 80 is fixed to the panel 6 , and the other end can pass through the upper template 7 and the lower template 8 and extend into the square iron 9 .

[0026] The opening and closing process of the plug housing injection mold of the utility model is as follows:

[0027] When the mold is closed, the upper and lower mold plates 7 and 8 are pressed together, the front mold core 20 and the rear mold core 30 engage, and the front mold insert 5 engages with the cavity. At this point, the second movable block 42 engages with the cavity. After the mold is closed, injection molding is performed in the cavity to form the plug housing. During mold closing, the compression spring 40 is compressed by the first movable block 41 and the outer wall of the rear mold core 30.

[0028] After the injection molding of the product is completed, the mold is opened. When the mold is opened, the panel 6 and the upper template 7 move upward. At this time, under the rebound force of the compression spring 40, the first movable block 41 is pushed outward, so that the second movable block 42 also moves outward, so that the second movable block 42 can be quickly separated from the side of the product. As the upper template 7 gradually moves upward, the upper template 7 drives the inclined guide rod 3 to move upward together. Under the guidance of the inclined guide rod 3, the slider 4 is pushed to move outward as a whole, so that the second movable block 42 is completely separated from the product. When the upper template 7 moves upward into place, the front mold core 20 is separated from the product, the ejector plate 1 moves upward, and the ejector plate 1 drives the ejector 2 to move upward. The ejector 2 pushes the product out of the cavity upward to achieve product demolding.

[0029] When the ejector plate 1 moves upward, the return spring 60 is compressed; when the ejector 2 completes ejection, the rebound force of the return spring 60 pushes the ejector plate 1 downward to return to its original position, completing the return position and facilitating the next mold closing and opening.

[0030] The above are only preferred embodiments of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. Plug housing injection mold, characterized in that, The invention comprises an ejector plate (1), an ejector pin (2), an inclined guide rod (3), a slider (4), a front mold insert (5), and a panel (6), an upper mold plate (7), a lower mold plate (8), a square iron (9) and a bottom plate (10) arranged in sequence from top to bottom. A front mold core (20) is provided below the upper mold plate (7), and a rear mold core (30) is provided above the lower mold plate (8). The front mold core (20) and the rear mold core (30) are arranged correspondingly to form a mold cavity. One end of the front mold insert (5) is fixed between the upper mold plate (7) and the front mold core (20), and the other end extends into the mold cavity. On one side, the ejector plate (1) is arranged on the inner side of the square iron (9), one end of the ejector (2) is fixed on the ejector plate (1), and the other end can penetrate the lower template (8) and extend into the cavity, the slider (4) is located on the outer periphery of the cavity and cooperates with the lower template (8), one end of the inclined guide rod (3) is fixed on the upper template (7), and the other end cooperates with the slider (4), a compression spring (40) is provided between the slider (4) and the rear mold core (30), one end of the compression spring (40) is in contact with the slider (4), and the other end is in contact with the rear mold core (30).

2. The plug housing injection mold according to claim 1, characterized in that: The slider (4) includes a first moving block (41) and a second moving block (42), wherein the second moving block (42) is fixed on the inner side of the first moving block (41) and corresponds to the mold cavity, the first moving block (41) cooperates with the lower mold plate (8), and the other end of the inclined guide rod (3) cooperates with the first moving block (41).

3. The plug housing injection mold according to claim 2, characterized in that: A mounting groove is provided at the bottom of the first moving block (41), and the compression spring (40) is located in the mounting groove and abuts against the rear mold core (30).

4. The plug housing injection mold according to claim 3, characterized in that: The upper end surface of the lower template (8) is provided with a sliding groove (81), and the two side walls of the sliding groove (81) are provided with limiting plates (50), the bottom of the first moving block (41) is located in the sliding groove (81), and the limiting plates (50) correspond to the two sides of the first moving block (41).

5. The plug housing injection mold according to any one of claims 1 to 4, characterized in that: It also includes a return spring (60) and a mounting rod (70), one end of the mounting rod (70) is fixed on the ejector plate (1), and the other end can pass through the lower template (8), the return spring (60) is sleeved on the mounting rod (70), one end of the return spring (60) is in contact with the ejector plate (1), and the other end is in contact with the lower template (8).

6. The plug housing injection mold according to claim 5, characterized in that: It also includes a guide column, one end of which is fixed on the panel (6), and the other end of which can pass through the upper template (7) and the lower template (8) and extend into the square iron (9).

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