Novel injection mold capable of demolding inverted buckle on inner side of product

Abstract

The utility model discloses a novel injection mold capable of demolding an inverted buckle on the inner side of a product, which relates to the technical field of injection molds, and comprises a lower mold and an inverted buckle demolding component, the inverted buckle demolding component is arranged on the side surface of the lower mold, and the inverted buckle demolding component comprises a fixed block, a pull block, a limiting screw and a sliding block. According to the novel injection mold capable of demolding the inverted buckle on the inner side of the product, pulling blocks are arranged in via holes in the two sides of a mold core side face fixing block in a sliding mode, and limiting screws penetrate through seat holes in the two sides of the sliding blocks and then are fixed to the pulling blocks in a threaded mode. According to the inverted buckle demolding assembly, demolding design is conducted on inverted buckles on the two sides of the helmet lens through the inverted buckle demolding assembly, and the defect that demolding is difficult due to the fact that the inverted buckles on the two sides of the helmet lens are connected with a lower mold in a hanging mode in the prior art is effectively overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, and particularly relates to a new type of injection mold that can demold the inner side of a product with an undercut. Background Art

[0002] In injection molded products with complex structures (such as the helmet lens in this application), undercuts are usually provided. Since the undercuts have structures such as flanges or hooks that are hooked to the mold, they cannot be directly demolded. Usually, a special undercut demolding mechanism is required for demolding.

[0003] However, the existing undercut demolding mechanisms have complex structures, occupy a large space, and are not convenient for undercut demolding.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structural deficiencies, and a new type of injection mold that can demold the inner side of a product with an undercut is proposed. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a new type of injection mold that can demold the inner side of a product with an undercut, so as to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A new type of injection mold that can demold the inner side of a product with an undercut, including a lower mold and an undercut demolding assembly. The undercut demolding assembly is arranged on the side of the lower mold. The undercut demolding assembly includes a fixed block, a pulling block, a limit screw, and a slider. The pulling block is slidably arranged in the through holes on both sides of the fixed block, and the limit screw is fastened in the screw hole at the rear end of the pulling block. The limit screw passes through the seat holes on both sides of the slider and is threadedly fixed to the pulling block.

[0007] Further, an upper mold is correspondingly arranged above the lower mold, and a nozzle is embedded in the middle of the upper mold.

[0008] Further, a core is fixed in the middle of the lower mold, and the side of the core is fixed to the fixed block.

[0009] Further, a step is provided on the side of the lower mold, and a guide groove is provided at the bottom end of the step.

[0010] Further, an extension plate is integrally fixed at the rear end of the slider, and the extension plate is slidably matched with the guide groove at the bottom end of the step.

[0011] Further, a slot is provided in the middle of the extension plate, and the slot is in extrusion fit with the inclined surface on the side wall of the inclined guide post.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. When the utility model is in use, sliders slide in the through holes on both sides of the fixed block on the side of the core. The limit screws pass through the seat holes on both sides of the slider and are threadedly fixed to the sliders. When in use, the slider moves towards the outer opening of the step driven by the inclined guide pillar. Further, the slider drives the slider to complete the undercut demolding through the limit screws. Finally, the ejection mechanism realizes the ejection of the helmet lens product. The undercut demolding assembly of this application is designed for demolding the undercuts on both sides of the helmet lens, effectively solving the existing technical problem that the undercuts on both sides of the helmet lens are hung on the lower mold, resulting in difficult demolding. Brief Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of the device of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the lower mold of the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the undercut demolding assembly of the utility model.

[0017] In the figure: 1. Lower mold; 2. Upper mold; 3. Nozzle; 4. Core; 5. Step; 6. Undercut demolding assembly; 601. Fixed block; 602. Slider; 603. Limit screw; 604. Slider; 7. Extension plate; 8. Slot; 9. Inclined guide pillar. Detailed Embodiment

[0018] The following further describes the embodiments of the present utility model in detail with reference to the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0019] As Figures 1 to 3As shown in the figure, a new injection mold that can demold the inner side of the product with an undercut includes a lower mold 1 and an undercut demolding component 6. Above the lower mold 1, an upper mold 2 is correspondingly arranged, and a nozzle 3 is embedded in the middle of the upper mold 2. A core 4 is fixed in the middle of the lower mold 1, and the side of the core 4 is fixed to a fixed block 601. A step 5 is formed on the side of the lower mold 1, and a guide groove is provided at the bottom of the step 5. An undercut demolding component 6 is arranged on the side of the lower mold 1. The undercut demolding component 6 includes a fixed block 601, a pulling block 602, a limit screw 603 and a slider 604. The pulling block 602 is slidably arranged in the through holes on both sides of the fixed block 601, and the limit screw 603 is fastened in the screw hole at the rear end of the pulling block 602. The limit screw 603 passes through the seat holes on both sides of the slider 604 and is threadedly fixed to the pulling block 602. The pulling blocks 602 are respectively slid in the through holes on both sides of the fixed block 601 on the side of the core 4, and the limit screw 603 passes through the seat holes on both sides of the slider 604 and is threadedly fixed to the pulling block 602. During use, the slider 604 moves towards the outer opening of the step 5 driven by the angled guide post 9. Further, the slider 604 drives the pulling block 602 through the limit screw 603 to complete the undercut demolding. Finally, the ejection mechanism realizes the ejection of the helmet lens product. An extension plate 7 is integrally fixed at the rear end of the slider 604, and the extension plate 7 is slidably engaged with the guide groove at the bottom of the step 5. A slot 8 is formed in the middle of the extension plate 7, and the slot 8 is in extrusion fit with the inclined surface of the side wall of the angled guide post 9.

[0020] Working principle: When using this new injection mold that can demold the inner side of the product with an undercut, the pulling blocks 602 are respectively slid in the through holes on both sides of the fixed block 601 on the side of the core 4, and the limit screw 603 passes through the seat holes on both sides of the slider 604 and is threadedly fixed to the pulling block 602. During use, the slider 604 moves towards the outer opening of the step 5 driven by the angled guide post 9. Further, the slider 604 drives the pulling block 602 through the limit screw 603 to complete the undercut demolding. Finally, the ejection mechanism realizes the ejection of the helmet lens product. The undercut demolding component 6 of this application is designed for demolding the undercuts on both sides of the helmet lens, effectively solving the existing technical problem that the undercuts on both sides of the helmet lens are hooked to the lower mold 1, resulting in difficult demolding.

[0021] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

Claims

1. A new injection mold that can demold the inner side of the product with an undercut, characterized in that, It includes a lower mold (1) and an undercut demolding assembly (6). The undercut demolding assembly (6) is arranged on the side of the lower mold (1). The undercut demolding assembly (6) includes a fixed block (601), a pulling block (602), a limit screw (603) and a slider (604). The pulling block (602) is slidably arranged in the through holes on both sides of the fixed block (601), and the limit screw (603) is fastened in the screw hole at the rear end of the pulling block (602). The limit screw (603) passes through the seat holes on both sides of the slider (604) and is threadedly fixed to the pulling block (602).

2. The novel injection mold capable of demolding the inner side of the product with an undercut according to claim 1, wherein, Above the lower mold (1), an upper mold (2) is correspondingly arranged, and a nozzle (3) is embedded in the middle of the upper mold (2).

3. A novel injection mold that can demold the inner side of the product with an undercut, characterized in that, A core (4) is fixed in the middle of the lower mold (1), and the side of the core (4) is fixed to the fixed block (601).

4. A novel injection mold that can demold the inner side of the product with an undercut, characterized in that, A step (5) is formed on the side of the lower mold (1), and a guide groove is formed at the bottom end of the step (5).

5. A novel injection mold that can demold the inner side of the product with an undercut, characterized in that, An extension plate (7) is integrally fixed to the rear end of the slider (604), and the extension plate (7) is slidably matched with the guide groove at the bottom end of the step (5).

6. A novel injection mold that can demold the inner side of the product with an undercut, characterized in that, A slot (8) is formed in the middle of the extension plate (7), and the slot (8) is in extrusion fit with the inclined surface on the side wall of the inclined guide post (9).

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