Elastic block mechanism for preventing injection molded part from sticking to front mold

Abstract

The utility model discloses an elastic block mechanism for preventing an injection-molded part from adhering to a front mold, and belongs to the technical field of injection molds. Comprising a workbench and a support, and a front mold body is fixedly arranged on the workbench; the elastic block is arranged at the bottom of the cavity of the front mold body; a groove is formed in the front mold body, the elastic sliding assembly is arranged in the groove in a sliding mode, and the elastic sliding assembly is fixedly connected with the elastic block; a sliding groove is formed in the front mold body, the pushing assembly is located in the sliding groove, and the pushing assembly capable of pushing the elastic sliding assembly to slide is fixedly connected to the lower portion of the rear mold body. By arranging the elastic block connected with the elastic sliding assembly, the situation that an injection molding part adheres to the inner wall of the front mold can be reduced through the elastic force of the spring in the elastic block, the whole process can be conducted along with movement of the rear mold body through the push rod synchronously moving with the rear mold, and the situation that the production efficiency is reduced due to the fact that the injection molding part adheres to the front mold is avoided.

Description

Technical Field

[0001] This utility model provides a spring block mechanism to prevent injection molded parts from sticking to the front mold, belonging to the field of injection mold technology. Background Technology

[0002] Injection molding is a widely used process in the production of plastic products, offering advantages such as high production efficiency, high product precision, and the ability to mold complex shapes. In the injection molding of cylindrical parts, the plastic raw material is heated and melted in the barrel of the injection molding machine, and then injected into the mold cavity. After the molten plastic cools and solidifies within the cavity, the mold opens, and the molded part is removed, thus completing one injection molding process.

[0003] Injection molds typically consist of a front mold and a rear mold. The front mold is the fixed mold part, and the rear mold is the moving mold part. During injection molding, the two form a complete mold. After injection molding, the front and rear molds separate to facilitate the removal of the molded part. When the mold opens, the molded part sticking to the inner wall of the front mold cavity is a common and challenging problem. When the molded part sticks to the front mold, it can negatively impact production. On one hand, it reduces production efficiency, requires manual intervention, and incurs extra time and effort in handling the issue, making the process cumbersome. On the other hand, it affects product quality. Forcibly removing the molded part stuck to the front mold using hammers, scrapers, or other tools may cause damage, deformation, flash, scratches, and other defects, reducing the product yield. Therefore, a new mechanism is needed to prevent the molded part from sticking to the front mold. Utility Model Content

[0004] The technical problem this invention aims to solve is that sticking injection molded parts to the front mold reduces production efficiency, and forcibly removing them using traditional tools can easily damage the product.

[0005] To solve the above problems, the proposed technical solution is as follows: a spring block mechanism for preventing injection molded parts from sticking to the front mold, comprising a worktable and a support, wherein a front mold body is fixedly mounted on the worktable; an electric telescopic rod is provided inside the support, and the working end of the electric telescopic rod is provided with a rear mold body that docks with the front mold body, wherein a gate is provided on the rear mold body; further comprising:

[0006] The spring block and the elastic sliding component are provided. The spring block is disposed at the bottom of the cavity of the front mold body. A groove is provided in the front mold body, and the elastic sliding component is slidably disposed in the groove and fixedly connected to the spring block.

[0007] A pushing component; a sliding groove is provided in the front mold body, the pushing component is located in the sliding groove, and the pushing component that can push the elastic sliding component to slide is fixedly connected to the bottom of the rear mold body.

[0008] As an improvement, the elastic sliding assembly includes a sliding rod, a limiting plate, and a spring. The sliding rod is slidably disposed in the groove and passes through the front mold cavity and is fixedly connected to the spring block. The limiting plate is located in the groove and is fixedly sleeved on the sliding rod. The spring is sleeved on the sliding rod, with its lower end fixedly connected to the bottom of the groove and its upper end fixedly connected to the limiting plate.

[0009] As an improvement, a sealing gasket is provided at the lower end of the spring block.

[0010] As an improvement, a connecting groove is provided in the front mold body, which connects the sliding groove and the recess; a slider is slidably arranged in the sliding groove, and a connecting rod is fixedly connected to the slider in the connecting groove, and the connecting rod is fixedly connected to the limiting plate.

[0011] As an improvement, the pushing component is a push rod, which is fixedly connected to the lower part of the rear mold body; the slider has an insertion hole, and the push rod is inserted into the insertion hole.

[0012] As an improvement, the slide groove is provided in two sets, and the connecting groove, connecting rod, slider, and push rod are provided in two sets corresponding to the slide groove; the two connecting rods are symmetrically arranged, and both connecting rods are fixedly connected to the limiting plate.

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

[0014] 1. The spring block is located at the bottom of the front mold cavity, and the elastic sliding component is fixedly connected to the spring block. By setting the elastic sliding component, the elastic force of the elastic sliding component can be used to push the spring block upward from bottom to top, so that the spring block pushes the injection molded part and avoids the injection molded part sticking to the inner wall of the front mold. There is no need to use hammers, spatulas or other tools to forcibly remove it, reducing damage to the injection molded part.

[0015] 2. The pushing component, which can push the elastic sliding component to slide, is fixedly connected to the lower part of the rear mold body. By directly setting the pushing component under the rear mold body, the movement of the rear mold body during mold closing can be used to press the elastic sliding component down, thereby ensuring the stability of the spring block. When the mold is opened, the pushing component naturally disengages from the elastic sliding component, allowing the elastic sliding component to push the injection molded part with its elasticity, preventing the injection molded part from sticking to the inner wall of the front mold. The whole process is carried out simultaneously with the movement of the rear mold body, and the production efficiency will not be reduced due to the injection molded part sticking to the front mold. Attached Figure Description

[0016] Figure 1 This is a perspective view of a spring block mechanism for preventing injection molded parts from sticking to the front mold according to the present invention.

[0017] Figure 2 This is a partial cross-sectional view of a spring block mechanism for preventing injection molded parts from sticking to the front mold according to this utility model.

[0018] Figure 3 This is a cross-sectional view of the front mold body of the spring block mechanism for preventing injection molded parts from sticking to the front mold according to this utility model.

[0019] Figure 4 This is a partially exploded view of the spring block mechanism for preventing injection molded parts from sticking to the front mold according to this utility model.

[0020] 1. Workbench; 2. Support; 3. Electric telescopic rod; 4. Rear mold body; 5. Gate; 6. Front mold body; 7. Spring block; 8. Groove; 9. Spring; 10. Sliding rod; 11. Limiting plate; 12. Push rod; 13. Slide groove; 14. Slider; 15. Connecting groove; 16. Connecting rod; 17. Insertion hole. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] according to Figure 1-4 As shown: This utility model provides a spring block mechanism to prevent injection molded parts from sticking to the front mold: it includes a worktable 1 and a support 2, with a front mold body 6 fixedly mounted on the worktable 1; an electric telescopic rod 3 is installed inside the support 2, and the working end of the electric telescopic rod 3 is provided with a rear mold body 4 that docks with the front mold body 6, and a gate 5 is opened on the rear mold body 4; it also includes:

[0023] The spring block 7 and the elastic sliding component are provided. The spring block 7 is located at the bottom of the cavity of the front mold body 6. A groove 8 is provided in the front mold body 6. The elastic sliding component is slidably located in the groove 8 and is fixedly connected to the spring block 7. A sealing gasket is provided at the lower end of the spring block 7 to increase the sealing performance and prevent molten plastic from entering the groove 8.

[0024] like Figure 2 As shown, the elastic sliding assembly includes a sliding rod 10, a limiting plate 11, and a spring 9. The sliding rod 10 is slidably disposed within the groove 8 and passes through the cavity of the front mold body 6, where it is fixedly connected to the spring block 7. The limiting plate 11 is located within the groove 8 and is fixedly sleeved on the sliding rod 10. The spring 9 is sleeved on the sliding rod 10, with its lower end fixedly connected to the bottom of the groove 8 and its upper end fixedly connected to the limiting plate 11. Utilizing the elastic force of the spring 9, the elastic sliding assembly can cause the spring block 7 to tend to move upwards, thereby generating a pushing force on the injection molded part and preventing it from sticking to the inner wall of the front mold.

[0025] Pushing component; a sliding groove 13 is provided in the front mold body 6, the pushing component is located in the sliding groove 13, and the pushing component that can push the elastic sliding component to slide is fixedly connected to the bottom of the rear mold body 4.

[0026] like Figure 3As shown, a connecting groove 15 is provided inside the front mold body 6, which connects the sliding groove 13 and the recess 8. A slider 14 is slidably disposed inside the sliding groove 13, and a connecting rod 16 is fixedly connected to the slider 14 inside the connecting groove 15, and the connecting rod 16 is fixedly connected to the limiting plate 11. The pushing component is a push rod 12, which is fixedly connected to the lower part of the rear mold body 4. An insertion hole 17 is provided inside the slider 14, and the push rod 12 is inserted into the insertion hole 17. The push rod 12 and the slider 14 can be used to control the movement of the limiting plate 11.

[0027] like Figure 4 As shown, there are two sets of slide grooves 13, and two sets of connecting grooves 15, connecting rods 16, sliders 14, and push rods 12 are provided corresponding to slide grooves 13; the two connecting rods 16 are symmetrically arranged, and both connecting rods 16 are fixedly connected to the limiting plate 11.

[0028] The principle of this utility model

[0029] like Figure 1 , 2 As shown, when using this application, the front mold body 6 is fixed on the worktable 1, while the rear mold body 4 can slide under the action of the electric telescopic rod 3. Activating the electric telescopic rod 3 causes the rear mold body 4 and the front mold body 6 to form a complete mold. When the rear mold body 4 moves downwards to assemble with the front mold body 6, the push rod 12 moves synchronously with the rear mold body 4. The push rod 12 inserts into the insertion hole 17 and pushes the slider 14 downwards until the slider 14 is at the bottom of the slide groove 13. At this time, driven by the connecting rod 16, the limiting plate 11 also compresses the spring 9 downwards, and the spring block 7 is also tightly attached to the bottom of the cavity of the front mold body 6, ensuring the stability of the spring block 7. Figure 3 As shown.

[0030] Molten plastic is added into the complete mold through the gate 5. After the cylindrical part cools and solidifies, the electric telescopic rod 3 is activated, which moves the rear mold body 4 upward, thereby separating the rear mold body 4 from the front mold body 6. As the rear mold body 4 separates from the front mold body 6, the push rod 12 also disengages from the slider 14. At this time, without the pressure of the push rod 12, under the action of the spring 9, the limiting plate 11 and the sliding rod 10 move the spring block 7 upward, thereby generating a pushing force on the injection molded part above the spring block 7, preventing the injection molded part from sticking to the inner wall of the cavity of the front mold body 6.

[0031] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A spring block mechanism for preventing sticking of injection molded parts to the front mold, comprising a workbench (1) and a support (2), the workbench (1) being fixedly provided with a front mold body (6); an electric telescopic rod (3) being arranged in the support (2), and the working end of the electric telescopic rod (3) being provided with a rear mold body (4) which is in butt joint with the front mold body (6), and a sprue (5) being formed in the rear mold body (4); characterized in that, Also include: The elastic sliding assembly is slidably arranged in the groove (8), and the elastic sliding assembly is fixedly connected with the elastic block (7); The push assembly is located in the sliding groove (13), and the push assembly fixedly connected below the rear mold body (4) can push the elastic sliding assembly to slide.

2. A mechanism for preventing sticking of an injection molded part to a mold cavity according to claim 1, wherein: The elastic sliding assembly includes a sliding rod (10), a limiting plate (11) and a spring (9), the sliding rod (10) is slidably arranged in the groove (8), and the sliding rod (10) penetrates into the cavity of the front mold body (6) and is fixedly connected with the elastic block (7); the limiting plate (11) is located in the groove (8), and the limiting plate (11) is fixedly sleeved on the sliding rod (10); the spring (9) is sleeved on the sliding rod (10), the lower end of the spring (9) is fixedly connected with the bottom of the groove (8), and the upper end of the spring (9) is fixedly connected with the limiting plate (11).

3. A mechanism for preventing sticking of an injection molded part to a mold cavity according to claim 2, wherein: The lower end of the elastic block (7) is provided with a sealing gasket.

4. A mechanism for preventing sticking of an injection molded part to a mold cavity according to claim 1, wherein: The front mold body (6) is provided with a connecting groove (15) communicating the sliding groove (13) and the groove (8); the sliding groove (13) is slidably provided with a sliding block (14), the connecting groove (15) is provided with a connecting rod (16) fixedly connected with the sliding block (14), and the connecting rod (16) is fixedly connected with the limiting plate (11).

5. A mechanism for preventing sticking of an injection molded part to a mold cavity according to claim 4, wherein: The push assembly is a push rod (12) fixedly connected below the rear mold body (4); the sliding block (14) is provided with a insertion hole (17), and the push rod (12) is inserted into the insertion hole (17).

6. A mechanism for preventing sticking of an injection molded part to a mold cavity according to claim 5, wherein: The sliding groove (13) is provided with two groups, and the connecting groove (15), the connecting rod (16), the sliding block (14) and the push rod (12) are provided with two groups corresponding to the sliding groove (13); two connecting rods (16) are symmetrically arranged, and both of the two connecting rods (16) are fixedly connected with the limiting plate (11). The sliding groove (13) is provided with two groups, and the connecting groove (15), the connecting rod (16), the sliding block (14) and the push rod (12) are provided with two groups corresponding to the sliding groove (13); two connecting rods (16) are symmetrically arranged, and both of the two connecting rods (16) are fixedly connected with the limiting plate (11).

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