A hot runner through-slider injection mold

Abstract

This utility model relates to an injection mold with a hot runner penetrating a slider for injection, comprising a fixed mold and a moving mold. The fixed mold has a hot runner, and the moving mold has a slider and a moving mold insert. The bottom of the slider has a cold runner, and the end of the hot runner passes through the slider and communicates with the cold runner. A gate communicating with the cold runner is formed between the side of the slider and the moving mold insert, so that the gate is located on a non-appearance surface of the product. In this utility model, the gate is located on a non-appearance surface of the product, which does not affect the quality of the product's appearance surface, ensuring perfect injection molding of important appearance surfaces, thus ensuring both the integrity of the product's appearance and smooth filling. When the mold is closed, the hot runner penetrates the slider and injects the material into the cold runner located below the slider. The injection process does not exert pressure on the slider, and at the same time, the hot runner positions the slider during the injection process to prevent the slider from moving during injection.

Description

Technical Field

[0001] This utility model relates to an injection mold with a hot runner penetrating a slider for injection, and belongs to the field of injection mold technology. Background Technology

[0002] There are two main existing technical solutions. One is to place the injection point directly on the product surface, which affects the integrity of the product's appearance. The other requires sacrificing the optimal injection position and choosing a less ideal one, which can lead to various problems in the injection molding process, such as mold bulging, deformation, and material shortage caused by excessive pressure. Solving these problems may require using a larger injection molding machine or multiple process adjustments to reduce the pressure, which undoubtedly consumes more energy and labor. In addition, the excessively long runner increases material costs. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing an injection mold with a hot runner through a slider that ensures the integrity of the product's appearance.

[0004] To achieve this objective, the technical solution adopted by this utility model is as follows:

[0005] An injection mold with a hot runner penetrating a slider for injection includes a fixed mold and a moving mold. The fixed mold is provided with a hot runner, and the moving mold is provided with a slider and a moving mold insert. The bottom of the slider is provided with a cold runner, and the end of the hot runner passes through the slider and communicates with the cold runner. A gate communicating with the cold runner is formed between the side of the slider and the moving mold insert, so that the gate is located on a non-visual surface of the product.

[0006] As a further optimization of the above technical solution: the moving mold is also provided with an inclined top, the side of the slider is provided with a movable notch, the movable notch is provided with a first guide slope, the inclined top is movably disposed in the movable notch, the inclined top is provided with a second guide slope, the first guide slope and the second guide slope are in contact, the inclined top is located on the side of the slider, and the slider and the inclined top, and the slider and the moving mold insert together constitute the core.

[0007] As a further optimization of the above technical solution: the moving mold is also provided with an ejector plate, the ejector plate is provided with a plurality of ejector rods, the top of the ejector rods passes through the moving mold insert and is fixedly connected to the inclined ejector, the side of the moving mold is also provided with a hydraulic cylinder, the hydraulic cylinder is connected to the slider; after the mold is opened, the hydraulic cylinder drives the slider to move backward to pull the core, the ejector plate drives the inclined ejector upward through the ejector rods, and under the guidance of the first guide inclined surface and the second guide inclined surface, the inclined ejector produces an upward displacement.

[0008] As a further optimization of the above technical solution: the fixed mold is also provided with a fixed mold gate insert, the end of the hot runner is inserted into the fixed mold gate insert, the moving mold is also provided with a runner pad, the cold runner is located on the runner pad, the end face of the fixed mold gate insert is provided with a positioning protrusion, and the runner pad is provided with a corresponding positioning groove. When the mold is closed, the positioning protrusion is inserted into the positioning groove.

[0009] Compared with existing technologies, the gate in this invention is located on a non-appearance surface of the product, which does not affect the quality of the product's appearance and ensures perfect injection molding of important appearance surfaces. It can guarantee both the integrity of the product's appearance and smooth filling. During mold closing, the hot runner passes through the slider and injects material into the cold runner located below the slider. The injection process does not put pressure on the slider. At the same time, the hot runner positions the slider during the injection process to prevent the slider from moving during injection. During mold closing, the positioning protrusion is inserted into the positioning groove. The cooperation between the positioning protrusion and the positioning groove positions the hot runner to prevent the hot runner from shifting and misaligning with the cold runner during mold closing, which would lead to injection failure. After mold opening, the hydraulic cylinder drives the slider to move backward to pull the core. The ejector plate drives the inclined ejector upward through the ejector rod. Under the guidance of the first guide inclined surface and the second guide inclined surface, the inclined ejector produces an upward displacement to complete the core pulling of the product. The material runner is shorter, which reduces material costs, significantly reduces injection pressure, and avoids problems such as mold bulging, deformation, and material shortage caused by excessive pressure, thus saving energy and costs. Attached Figure Description

[0010] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0011] Figure 2 yes Figure 1 A magnified structural diagram of point A in the middle. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. For example... Figure 1-2 As shown, an injection mold with a hot runner penetrating a slider for injection includes a fixed mold 1 and a moving mold 2. The fixed mold 1 is provided with a hot runner 3, and the moving mold 2 is provided with a slider 4 and a moving mold insert 5. The bottom of the slider 4 is provided with a cold runner 6. The end of the hot runner 3 passes through the slider 4 and communicates with the cold runner 6. A gate 7 communicating with the cold runner 6 is formed between the side of the slider 4 and the moving mold insert 5, so that the gate 7 is located on the non-appearance surface of the product, ultimately ensuring perfect injection molding of important appearance surfaces and solving the conflict between gate defects and appearance quality.

[0013] In the above technical solution: the moving mold 2 is also provided with an inclined ejector 8, the side of the slider 4 is provided with a movable notch, the movable notch is provided with a first guide slope, the inclined ejector 8 is movably disposed in the movable notch, the inclined ejector 8 is provided with a second guide slope 81, and the first guide slope and the second guide slope 81 are in contact. The inclined ejector 8 is located on the side of the slider 4, and the slider 4 and the inclined ejector 8, and the slider 4 and the moving mold insert 5 together constitute the core.

[0014] In the above technical solution: the moving mold 2 is also provided with an ejector plate 9, and the ejector plate 9 is provided with several ejector rods 91. The top of the ejector rods 91 passes through the moving mold insert 5 and is fixedly connected to the inclined ejector 8. The side of the moving mold 2 is also provided with a hydraulic cylinder 10, which is connected to the slider 4. After the mold is opened, the hydraulic cylinder 10 drives the slider 4 to move backward to pull the core. The ejector plate 9 drives the inclined ejector 8 upward through the ejector rods 91. Under the guidance of the first guide slope and the second guide slope 81, the inclined ejector 8 produces an upward displacement, completing the core pulling of the product.

[0015] In the above technical solution: the fixed mold 1 is also provided with a fixed mold gate insert 11, and the end of the hot runner 3 passes through the fixed mold gate insert 11. The moving mold 2 is also provided with a runner pad 21, and the cold runner 6 is located on the runner pad 21. The end face of the fixed mold gate insert 11 is provided with a positioning protrusion 111, and the runner pad 21 is provided with a corresponding positioning groove 211. When the mold is closed, the positioning protrusion 111 is inserted into the positioning groove 211. The cooperation between the positioning protrusion 111 and the positioning groove 211 positions the hot runner 3, preventing the hot runner 3 from shifting position and misaligning with the cold runner 6 when the mold is closed, which would lead to injection failure.

[0016] In this invention, the gate 7 is located on a non-appearance surface of the product, thus not affecting the quality of the product's appearance and ensuring perfect injection molding of important appearance surfaces. This guarantees both the integrity of the product's appearance and smooth filling. During mold closing, the hot runner 3 passes through the slider 4, and the hot runner 3 injects the material into the cold runner 6 located below the slider 4. The injection process does not exert pressure on the slider 4. At the same time, the hot runner 3 positions the slider 4 during the injection process, preventing the slider 4 from moving during injection. During mold closing, the positioning protrusion 111 is inserted into the positioning groove 211, and the positioning protrusion 111 and the positioning groove 211... The fit between the grooves 211 positions the hot runner 3 to prevent it from shifting and misaligning with the cold runner 6 during mold closing, thus preventing injection failure. After mold opening, the hydraulic cylinder 10 drives the slider 4 to move backward to pull the core, and the ejector plate 9 drives the inclined ejector 8 upward through the ejector rod 91. Under the guidance of the first guide inclined surface and the second guide inclined surface 81, the inclined ejector 8 produces an upward displacement to complete the core pulling of the product. The shorter runner reduces material costs, significantly reduces injection pressure, and avoids problems such as mold bulging, deformation, and material shortage caused by excessive pressure, thus saving energy and costs.

[0017] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should fall within the protection scope of this utility model.

Claims

1. A hot runner through slide pin-point injection mold, comprising a fixed mold (1) and a movable mold (2), wherein the fixed mold (1) is provided with a hot runner (3), and the movable mold (2) is provided with a slide (4) and a movable mold insert (5), characterized in that The bottom of the slider (4) is provided with a cold runner (6), the end of the hot runner (3) passes through the slider (4) and communicates with the cold runner (6), and a gate (7) communicating with the cold runner (6) is formed between the side of the slider (4) and the moving mold insert (5), so that the gate (7) is located on the non-appearance surface of the product.

2. The hot runner through slide pin injection mold of claim 1, wherein The moving mold (2) is also provided with a slanted top (8). The side of the slider (4) is provided with a movable notch. A first guide slope is provided on the movable notch. The slanted top (8) is movably disposed in the movable notch. A second guide slope (81) is provided on the slanted top (8). The first guide slope and the second guide slope (81) are in contact with each other. The slanted top (8) is located on the side of the slider (4). The slider (4) and the slanted top (8), and the slider (4) and the moving mold insert (5) together form a core.

3. The hot runner through slide pin injection mold of claim 2, wherein The moving mold (2) is also provided with an ejector plate (9), and the ejector plate (9) is provided with a plurality of ejector rods (91). The top of the ejector rods (91) passes through the moving mold insert (5) and is fixedly connected to the inclined ejector (8). The side of the moving mold (2) is also provided with an oil cylinder (10), and the oil cylinder (10) is connected to the slider (4). After the mold is opened, the oil cylinder (10) drives the slider (4) to move backward to pull the core. The ejector plate (9) drives the inclined ejector (8) upward through the ejector rods (91). Under the guidance of the first guide inclined surface and the second guide inclined surface (81), the inclined ejector (8) produces an upward displacement.

4. The hot runner through slide pin injection mold of claim 1, wherein The fixed mold (1) is also provided with a fixed mold gate insert (11), the end of the hot runner (3) passes through the fixed mold gate insert (11), the moving mold (2) is also provided with a runner pad (21), the cold runner (6) is located on the runner pad (21), the end face of the fixed mold gate insert (11) is provided with a positioning protrusion (111), and the runner pad (21) is provided with a corresponding positioning groove (211). When the mold is closed, the positioning protrusion (111) is inserted into the positioning groove (211).

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