A structure of a headlamp lens product suction mold

Abstract

The utility model discloses a kind of structures of solving headlamp lampshade product suction mold, the structure includes: movable mould, the ejector block for ejecting lampshade is arranged on it, its inside is further provided with the air clearance corresponding with the position of lampshade white sheet, the air clearance is provided with the air hole communicated with the outside of the movable mould;And fixed mould, after forming the mould for injection molding the lampshade with the movable mould intercoordination, the lampshade white sheet in lampshade after forming covers on the air clearance.The structure of solving headlamp lampshade product suction mold designed in the utility model, by setting the air hole communicated with the outside in the air clearance in movable mould, the vacuum state between injection molding air clearance and lampshade white sheet can be broken, so that lampshade white sheet and air clearance are in non-vacuum state, so when ejector block ejects lampshade, lampshade white sheet and the groove bottom of air clearance will not be adhered due to negative pressure, white sheet sticking mold problem is completely solved.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting technology, specifically to a structure for solving the problem of suction molding of headlight cover products. Background Technology

[0002] After injection molding, headlight covers often experience a problem of white film sticking to the mold during ejection (i.e., the white film adheres to the bottom of the clearance groove in the moving mold). Currently, there is no effective solution to this problem. Generally, mirror polishing of the bottom of the clearance groove is used to increase the smoothness of the groove bottom and the clearance (i.e., the gap between the groove bottom and the white film), thereby preventing the white film from sticking to the mold and getting scratched during ejection.

[0003] However, headlight covers often feature a multi-curved, streamlined design, which not only places stringent demands on polishing techniques, increasing polishing time and requiring high precision, but also makes it difficult to control the clearance created by polishing, potentially affecting the quality of the cover. If the clearance is too large, while it prevents the cover sheet from sticking to the mold during removal, the vacuum between the cover sheet and the clearance groove after injection molding can cause excessive deformation of the cover sheet during removal under negative pressure, also impacting product quality. Conversely, if the clearance is too small, the cover sheet may still adhere to the bottom of the clearance groove under negative pressure during removal. Even if the groove bottom has been mirror-polished for increased smoothness, the transparent material of the cover sheet means that adhesion to the smooth groove bottom can still negatively affect the quality of the finished cover. Utility Model Content

[0004] The purpose of this utility model is to provide a structure that solves the problem of mold adhesion in headlight cover products, aiming to completely solve the problem of white sheet of lamp cover sticking to the mold when removing parts without affecting product quality.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: This utility model designs a structure to solve the problem of mold absorption in headlight cover products. The cover has a two-color structure, which includes a white cover sheet and a black cover sheet formed on the outer edge of the white cover sheet. The structure includes the following configuration: The moving mold is provided with a top block for ejecting the lampshade. The interior of the moving mold is also provided with a clearance groove corresponding to the position of the white sheet of the lampshade. The clearance groove is provided with a vent hole communicating with the outside of the moving mold. The fixed mold, together with the moving mold, forms a mold for injection molding the lampshade, and the lampshade white sheet in the molded lampshade covers the clearance groove.

[0006] Furthermore, a structure for solving the suction mold problem of headlight cover products: the position of the top block on the moving mold corresponds to the black sheet of the cover, and the top block acts on the black sheet of the cover to push the entire cover out.

[0007] Furthermore, a structure for solving the problem of mold suction in headlight cover products: an air filter is also provided covering the vent hole.

[0008] Specifically, the air filter is used to prevent external dust, impurities, etc., from entering the air-proof groove, thereby affecting the quality of the lampshade. The air filter can be made of filter cotton.

[0009] Furthermore, a structure for solving the problem of mold suction in headlight cover products: the air filter is disposed in the air-proof groove.

[0010] Specifically, placing the air filter at the opening of the vent hole located in the vent groove can prevent the air filter from being damaged by external factors, compared to placing it at the opening of the vent hole located outside the moving mold.

[0011] Furthermore, a structure for solving the problem of mold suction in headlight cover products: the air filter is fixed at the opening of the vent hole by pressing.

[0012] Furthermore, a structure for solving the problem of mold suction in headlight cover products is provided: the bottom of the clearance groove is also provided with a fixing groove that communicates with the vent hole; the air filter is covered at the opening of the vent hole and located in the fixing groove, and the pressure plate is fixedly set in the fixing groove and pressed against the edge of the air filter.

[0013] Furthermore, a structure for solving the suction molding of headlight cover products: the pressure plate is fixedly set in the fixing groove by bolts.

[0014] The beneficial effects of this utility model are: This invention relates to a structure that solves the problem of mold adhesion in headlight cover products. By setting a vent hole in the clearance groove inside the moving mold that communicates with the outside, the vacuum state between the clearance groove and the cover sheet after injection molding can be broken, so that the cover sheet and the clearance groove are in a non-vacuum state. In this way, when the top block ejects the cover (removes the part), the cover sheet will not stick to the bottom of the clearance groove due to negative pressure, thus completely solving the problem of the cover sheet sticking to the mold.

[0015] Meanwhile, the structure designed in this invention for solving the mold-forming problem of headlight cover products eliminates the need for mirror polishing of the bottom of the clearance groove, reducing polishing processes and improving production efficiency. Furthermore, the air filter in this structure isolates impurities from the outside air, preventing dust, particles, and other impurities from entering the clearance groove and thus avoiding impurities adhering to the white sheet of the lamp cover, which could lead to quality problems in the finished lamp cover. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the injection molding structure of an existing headlight lens. Figure 1 The S1 state shown indicates an abnormal ejection (sticking to the mold) of the lampshade white sheet, while the S2 state indicates a normal ejection of the lampshade white sheet. Figure 2 This is a structural diagram illustrating the solution for mold suction in headlight cover products designed for Embodiment 1 of this utility model. Figure 2 To Figure 1 A schematic diagram of the structure after the partial improvement design of part A in the diagram; Figure 3 This is a schematic diagram of a structure for setting a fixing groove in a clearance groove.

[0018] The markings in the image are as follows: 1-Moving mold, 2-Fixed mold, 3-Lampshade, 11-Top block, 12-Void groove, 13-Ventilation hole, 14-Air filter, 15-Pressure plate, 16-Fixing groove, 17-Bolt, 31-White lampshade sheet, 32-Black lampshade sheet. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0020] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "top," and "bottom," etc., indicating orientation or positional relationships, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this utility model described herein can be implemented in orders other than those illustrated or described herein.

[0021] Example 1

[0022] like Figures 1-3 As shown, this embodiment 1 designs a structure to solve the problem of mold absorption in headlight cover products. The cover 3 has a dual-color structure, which includes a white cover sheet 31 and a black cover sheet 32 ​​formed on the outer edge of the white cover sheet 31. The structure includes the following configuration: The moving mold 1 is provided with a top block 11 for ejecting the lampshade 3, and the position of the top block 11 corresponds to the position of the black sheet 32 ​​of the lampshade. The top block 11 acts on the black sheet 32 ​​of the lampshade to eject the lampshade 3 as a whole. The interior of the moving mold 1 is also provided with a clearance groove 12 corresponding to the position of the white sheet 31 of the lampshade. The clearance groove 12 is provided with a vent hole 13 communicating with the outside of the moving mold 1. An air filter sheet (using filter cotton) 14 is also provided at the opening of the vent hole 13 and is located in the clearance groove 12. The air filter sheet 14 is fixed at the opening of the vent hole 13 by a pressing sheet 15. And the fixed mold 2, which cooperates with the moving mold 1 to form a mold for injection molding the lampshade 3. The lampshade white sheet 31 in the molded lampshade 3 covers the anti-vacuum groove 12, and a vacuum state is formed between the lampshade white sheet 31 and the anti-vacuum groove 12.

[0023] Preferably, a fixing groove 16 communicating with the vent hole 13 is also provided at the bottom of the air-proof groove 12. The air filter 14 covers the opening of the vent hole 13 and is located in the fixing groove 16. The pressing plate 15 is fixedly disposed in the fixing groove 16 and pressed against the edge of the air filter 14. The pressing plate 15 is fixedly disposed in the fixing groove 16 by bolts 17. Figures 2-3 As shown.

[0024] Specifically, when the lampshade 3 is removed after injection molding, the ejector block 11 performs an ejection action. The ejector block 11 acts on the black part 32 of the lampshade (there is no ejection force on the white part 31 of the lampshade), ejecting both the white part 31 and the black part 32 of the lampshade together. Figure 1 When the existing headlight lens molded structure shown is injection molded, since there is no ejection force at the white part 31 of the lens and the space between it and the clearance groove 12 is a vacuum state formed after injection molding, the white part 31 of the lens is prone to sticking to the mold due to the negative pressure when the lens 3 is ejected (removed from the mold). (That is, the white part 31 of the lens adheres to the bottom of the clearance groove 12 due to the negative pressure.) Figure 1 The abnormal ejection of the white film exhibited by S1 caused abnormalities in the lampshade product.

[0025] To address the issue of the lampshade sheet 31 sticking to the mold caused by traditional injection molding structures, Embodiment 1 designs a structure to solve the problem of mold adhesion in headlight lampshade products. In Embodiment 1, a vent 13 is added to the clearance groove 12, and an air filter 14 is placed over the vent 13 to prevent dust, iron filings, and other debris from entering. A pressure plate 15, a fixing groove 16, and bolts 17 are further used to secure the air filter 14, preventing it from moving or falling off. During ejection, the vent 13 draws external air into the clearance groove 12, breaking the vacuum between the lampshade sheet 31 and the clearance groove 12. This prevents the lampshade sheet 31 from sticking to the bottom of the clearance groove 12 due to negative pressure, allowing the lampshade sheet 31 to exhibit the following properties: Figure 1 S2 exhibits a normal ejection state; at the same time, before the outside air enters the air-proof slot 12, it will pass through the air filter 14 to remove impurities, ensuring that it will not contaminate the white sheet 31 of the lampshade.

[0026] This invention relates to a structure for solving the problem of mold suction in headlight cover products. The structure of the ventilation holes can break the vacuum state between the white part of the cover and the clearance groove, thereby avoiding the problem of sticking to the mold when removing the part. At the same time, since there is no negative pressure between the white part of the cover and the clearance groove, the ejection force when ejecting the cover is also reduced. The reduced ejection force acting on the black part of the cover can also prevent the cover from deforming due to excessive force, thus improving the quality and stability of the headlight cover product.

[0027] The above-described preferred embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of this utility model. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A structure for solving the problem of mold suction in headlight cover products, characterized in that, The lampshade (3) has a dual-color structure, comprising a white lampshade sheet (31) and a black lampshade sheet (32) formed on the outer edge of the white lampshade sheet (31). The structure includes the following configuration: The moving mold (1) is provided with a top block (11) for ejecting the lampshade (3), and a clearance groove (12) corresponding to the position of the white sheet (31) of the lampshade is also provided inside. The clearance groove (12) is provided with a vent hole (13) communicating with the outside of the moving mold (1). And a fixed mold (2), which, together with the moving mold (1), forms a mold for injection molding the lampshade (3), and the lampshade white sheet (31) in the molded lampshade (3) covers the clearance groove (12).

2. The structure for solving the problem of mold suction in headlight cover products according to claim 1, characterized in that, The position of the top block (11) on the moving mold (1) is set to correspond to the lampshade black sheet (32). The top block (11) acts on the lampshade black sheet (32) to push the lampshade (3) out as a whole.

3. The structure for solving the problem of mold suction in headlight cover products according to claim 1, characterized in that, An air filter (14) is also provided to cover the vent (13).

4. The structure for solving the problem of mold suction in headlight cover products according to claim 3, characterized in that, The air filter (14) is disposed in the air-proof groove (12).

5. A structure for solving the problem of mold suction in headlight cover products according to claim 3 or 4, characterized in that, The air filter (14) is fixed at the opening of the vent (13) by a pressing plate (15).

6. The structure for solving the problem of mold suction in headlight cover products according to claim 5, characterized in that, The bottom of the vent groove (12) is also provided with a fixed groove (16) that communicates with the vent hole (13). The air filter (14) is placed over the opening of the vent (13) and located in the fixing groove (16), and the pressure plate (15) is fixedly placed in the fixing groove (16) and pressed against the edge of the air filter (14).

7. The structure for solving the problem of suction molding of headlight cover products according to claim 6, characterized in that, The pressure plate (15) is fixedly installed in the fixing groove (16) by bolts (17).

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