High-smoothness thick-wall light guide injection mold
By designing high-gloss and thick-wall light guide injection molds, the synchronous forming of the middle convex strips and side convex ribs of the car lamp mask plastic parts is achieved by using structures such as molding inserts and molding protrusions, which solves the problem that existing molds require secondary processing, improves the quality of plastic parts and reduces production costs.
Patent Information
- Application Number
- CN202421738493.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-22
AI Technical Summary
During the injection molding process of existing car light mask molds, the middle convex strips and side convex ribs of the plastic parts need to be subsequently processed or welded, and there are many processes and are prone to damage, which affects the quality of the plastic parts and increases production costs.
A high-gloss and thick-wall light guide injection mold is designed, including a fixed mold and a moving mold for the vehicle lamp mask. The mold is equipped with a molding insert, a molding protrusion and a molding part. Through these structures, the synchronous forming of the middle convex strip and the side convex ribs is achieved to avoid secondary processing.
The middle convex strips and side convex ribs of the headlight mask plastic parts are realized simultaneously during the injection molding process, without secondary processing, shortening the process, improving the quality of the plastic parts, reducing production costs, and reducing the weight of the mold through a lightweight part, making it easier to maintain.
Smart Images
Figure CN222920978U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of molds and relates to a high-gloss thick-wall light guide injection mold. Background Art
[0002] In the automotive industry, various molds are widely used in the production of automotive interiors and automotive body panels, such as stamping molds, injection molds, forging molds, casting wax molds, glass molds, etc. Among them, the headlight mask is manufactured by an injection molding process and an injection molding mold is used. Due to installation requirements, a rib structure is provided in the middle and ribbed structures are provided on the sides of the headlight mask to facilitate subsequent installation and use. In the injection process of the existing headlight mask mold, the middle rib and the side rib of the plastic part need subsequent secondary processing or welding, which involves many processes. Moreover, the secondary processing is likely to damage the overall plastic part, affecting the quality of the plastic part and resulting in a high production cost. Therefore, there is an urgent need to design a high-gloss thick-wall light guide injection mold that can overcome the above defects.
[0003] In order to overcome the deficiencies of the prior art, people have continuously explored and proposed various solutions. For example, a Chinese patent discloses an automotive headlight mask forming mold [Application No.: 202320363191.2], which includes an upper mold and a lower mold. The upper mold includes an upper mold base and an upper mold core, and the lower mold includes a lower mold base and a lower mold core. The lower mold core includes a positioning seat body and a forming part. The positioning seat body includes a first side part, a second side part arranged oppositely, and two connecting parts connecting the first side part and the second side part. The forming part includes an inclined table part and a stop part. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a high-gloss thick-wall light guide injection mold for solving the above problems.
[0005] To achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A high-gloss thick-wall light guide injection mold includes a fixed mold for forming a headlight mask and a movable mold for forming a headlight mask. Two first forming inserts are arranged in the fixed mold for forming a headlight mask, and two second forming inserts are arranged in the movable mold for forming a headlight mask. The first forming inserts and the second forming inserts are arranged opposite to each other. A forming concave part is arranged in the first forming insert, and a forming convex part is arranged in the second forming insert. The forming convex part has a middle rib forming part and a side rib forming part. The side rib forming part and the middle rib forming part are arranged alternately. A lightening part is arranged outside the second forming insert.
[0007] In the above high-gloss thick-wall light guide injection mold, the middle rib forming part includes a middle convex frame arranged in the forming convex part, and a concave area is formed between the middle convex frame and the forming convex part.
[0008] In the above-mentioned high-gloss thick-wall optical waveguide injection mold, the side rib forming part includes four outer rib forming grooves arranged in the forming protrusion, and the outer rib forming grooves and the middle convex frame are arranged alternately.
[0009] In the above-mentioned high-gloss thick-wall optical waveguide injection mold, a clamping plate forming part is further provided in the forming protrusion, and the clamping plate forming part is located between the outer rib forming groove and the middle convex frame.
[0010] In the above-mentioned high-gloss thick-wall optical waveguide injection mold, the clamping plate forming part includes a clamping plate forming groove arranged between the outer rib forming groove and the middle convex frame, and the length of the clamping plate forming groove is less than the length of the outer rib forming groove.
[0011] In the above-mentioned high-gloss thick-wall optical waveguide injection mold, a top block placement part is arranged in the second forming insert, and the top block placement part corresponds to the position of the forming protrusion.
[0012] In the above-mentioned high-gloss thick-wall optical waveguide injection mold, the top block placement part includes a plurality of top block placement chambers arranged in the second forming insert.
[0013] In the above-mentioned high-gloss thick-wall optical waveguide injection mold, a ejector rod chute is provided at the bottom of the top block placement chamber, and the ejector rod chute is communicated with the top block placement chamber.
[0014] In the above-mentioned high-gloss thick-wall optical waveguide injection mold, the lightweight part includes a plurality of outer cavities arranged on the outer side of the second forming insert.
[0015] In the above-mentioned high-gloss thick-wall optical waveguide injection mold, a plurality of heat dissipation hole grooves are connected to the inner side of the outer cavity.
[0016] Compared with the existing technology, the advantages of the present utility model are as follows:
[0017] 1. During the injection molding process of the present utility model, the fixed mold for forming the headlight mask and the moving mold for forming the headlight mask are moved closer to each other, so that the first forming insert and the second forming insert are fitted together, and the forming concave part and the forming protrusion cooperate to form a complete cavity. The molten material is injected into the cavity. The middle convex strip structure of the headlight mask is formed synchronously through the middle convex strip forming part, and the side rib structure of the headlight mask can be formed synchronously through the side rib forming part. There is no need to perform secondary processing on the plastic part, the process is shortened, and the damage to the plastic part caused by secondary processing is avoided. The overall quality of the plastic part is greatly improved, the production cost is reduced, and the lightweight part can reduce the weight of the second forming insert, which is convenient for subsequent maintenance.
[0018] 2. During the injection molding process of the present utility model, the card plate forming groove can also simultaneously form the card plate structure of the plastic part. The overall structure is integrally formed, avoiding the breakage at the connection between the card plate and the plastic part body, and having high overall connection strength.
[0019] Other advantages, objectives, and features of the present utility model will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present utility model. Brief Description of the Drawings
[0020] Figure 1 is a schematic structural diagram of the present utility model.
[0021] Figure 2 is a schematic partial structural diagram of the present utility model.
[0022] Figure 3 is a schematic structural diagram of the second forming insert block.
[0023] Figure 4 is an enlarged schematic diagram of the second forming insert block.
[0024] In the figure: the fixed mold 1 for forming the headlight mask, the movable mold 2 for forming the headlight mask, the first forming insert block 3, the second forming insert block 4, the forming protrusion 5, the middle rib forming part 6, the side rib forming part 7, the lightweight part 8, the middle convex frame 9, the concave area 10, the outer rib forming groove 11, the card plate forming part 12, the card plate forming groove 13, the ejector block placement part 14, the ejector block placement cavity 15, the ejector rod sliding groove 16, the outer cavity 17, the heat dissipation hole groove 18. Detailed Embodiment
[0025] The present utility model will be further described below with reference to the accompanying drawings.
[0026] As Figures 1-4 shown, a high-gloss thick-wall light guide injection mold includes a fixed mold 1 for forming the headlight mask and a movable mold 2 for forming the headlight mask. There are two first forming insert blocks 3 in the fixed mold 1 for forming the headlight mask, and two second forming insert blocks 4 in the movable mold 2 for forming the headlight mask. The first forming insert blocks 3 and the second forming insert blocks 4 are arranged opposite to each other. The first forming insert blocks 3 are provided with forming recesses, and the second forming insert blocks 4 are provided with forming protrusions 5. The forming protrusions 5 are provided with a middle rib forming part 6 and a side rib forming part 7. The side rib forming part 7 and the middle rib forming part 6 are arranged in a staggered manner. The outer side of the second forming insert block 4 is provided with a lightweight part 8.
[0027] In this embodiment, during the injection molding process, the fixed mold 1 for forming the headlight mask and the movable mold 2 for forming the headlight mask are brought closer to each other, so that the first forming insert 3 is fitted with the second forming insert 4, and the forming recess and the forming protrusion 5 cooperate to form a complete cavity. The molten material is injected into the cavity. The middle rib forming part 6 is used to simultaneously form the middle rib structure of the headlight mask, and the side rib forming part 7 can simultaneously form the side rib structure of the headlight mask. There is no need to perform secondary processing on the plastic part, which shortens the process and avoids damage to the plastic part caused by secondary processing, greatly improving the overall quality of the plastic part, reducing the production cost. The lightweight part 8 can reduce the weight of the second forming insert 4, facilitating subsequent maintenance.
[0028] Combined with Figures 1-4 As shown, the middle rib forming part 6 includes a middle convex frame 9 arranged in the forming protrusion 5, and a concave area 10 is formed between the middle convex frame 9 and the forming protrusion 5.
[0029] Specifically, the middle rib structure of the headlight mask is simultaneously formed through the middle convex frame 9 and the concave area 10. There is no need to perform secondary processing on the plastic part, which shortens the process and avoids damage to the plastic part caused by secondary processing, greatly improving the overall quality of the plastic part and reducing the production cost.
[0030] The side rib forming part 7 includes four outer rib forming grooves 11 arranged in the forming protrusion 5, and the outer rib forming grooves 11 are arranged staggered with the middle convex frame 9.
[0031] In this embodiment, the side rib structure of the headlight mask can be simultaneously formed through the outer rib forming grooves 11. There is no need to perform secondary processing on the plastic part, which shortens the process and avoids damage to the plastic part caused by secondary processing, greatly improving the overall quality of the plastic part and reducing the production cost.
[0032] Combined with Figure 3 、 Figure 4 As shown, a card forming part 12 is further provided in the forming protrusion 5, and the card forming part 12 is located between the outer rib forming groove 11 and the middle convex frame 9.
[0033] In this embodiment, during the injection molding process, the card forming part 12 can also simultaneously form the card structure of the plastic part. The overall is formed in an integral molding manner, avoiding breakage at the connection between the card and the plastic part body, and having high overall connection strength.
[0034] The card forming part 12 includes a card forming groove 13 arranged between the outer rib forming groove 11 and the middle convex frame 9, and the length of the card forming groove 13 is less than the length of the outer rib forming groove 11.
[0035] In this embodiment, during the injection molding process, the clamping plate forming groove 13 can also simultaneously form the clamping plate structure of the plastic part. The overall structure is integrally formed, which can avoid the breakage at the connection between the clamping plate and the plastic part body, and the overall connection strength is high.
[0036] Combined with Figure 4 As shown, a ejector block placement part 14 is provided in the second forming insert 4, and the position of the ejector block placement part 14 corresponds to that of the forming protrusion 5.
[0037] In this embodiment, the ejector block placement part 14 is used to place the in-mold ejector block, which is convenient for ejecting and demolding the formed plastic part through the ejector block.
[0038] The ejector block placement part 14 includes a plurality of ejector block placement chambers 15 provided in the second forming insert 4.
[0039] In this embodiment, the ejector block placement chamber 15 is used to place the in-mold ejector block, which is convenient for ejecting and demolding the formed plastic part through the ejector block.
[0040] Combined with Figures 1-4 As shown, the bottom of the ejector block placement chamber 15 has an ejector rod chute 16, and the ejector rod chute 16 is communicated with the ejector block placement chamber 15.
[0041] In this embodiment, the ejector rod chute 16 facilitates the sliding of the ejector rod.
[0042] Combined with Figures 1-2 As shown, the lightweight part 8 includes a plurality of outer cavities 17 provided on the outer side of the second forming insert 4.
[0043] In this embodiment, the outer cavities 17 can reduce the weight of the second forming insert 4, which is convenient for subsequent maintenance.
[0044] Combined with Figures 1-2 As shown, a plurality of heat dissipation hole grooves 18 are connected to the inner side of the outer cavity 17.
[0045] In this embodiment, the heat dissipation hole grooves 18 can achieve the purpose of rapid heat dissipation subsequently.
[0046] The working principle of the present utility model is:
[0047] During the injection molding process, the fixed mold 1 for forming the headlight mask and the movable mold 2 for forming the headlight mask are brought closer to each other, so that the first forming insert 3 is fitted with the second forming insert 4, and the forming recess and the forming protrusion 5 cooperate to form a complete cavity. The molten material is injected into the cavity. The middle convex rib structure of the headlight mask is formed synchronously through the middle convex frame 9 and the concave area 10. The side convex rib structure of the headlight mask can be formed synchronously through the outer convex rib forming groove 11. There is no need to perform secondary processing on the plastic part, which shortens the process and avoids damage to the plastic part caused by secondary processing, greatly improving the overall quality of the plastic part and reducing the production cost.
[0048] During the injection molding process, the clamping plate forming groove 13 can also form the clamping plate structure of the plastic part synchronously. The whole adopts an integral molding method, which avoids the breakage at the connection between the clamping plate and the plastic part body, and has high overall connection strength.
[0049] The ejector block placement chamber 15 is used to place the ejector block in the mold, which is convenient for ejecting the molded plastic part through the ejector block. The ejector rod chute 16 facilitates the sliding of the ejector rod. The outer cavity 17 can reduce the weight of the second forming insert 4, which is convenient for subsequent maintenance. The heat dissipation hole groove 18 can achieve the purpose of rapid heat dissipation subsequently.
[0050] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention.
[0051] Although terms such as the fixed mold 1 for forming the headlight mask, the movable mold 2 for forming the headlight mask, the first forming insert 3, the second forming insert 4, the forming protrusion 5, the middle convex rib forming part 6, the side convex rib forming part 7, the lightweight part 8, the middle convex frame 9, the concave area 10, the outer convex rib forming groove 11, the clamping plate forming part 12, the clamping plate forming groove 13, the ejector block placement part 14, the ejector block placement chamber 15, the ejector rod chute 16, the outer cavity 17, the heat dissipation hole groove 18 are used more in this article, the possibility of using other terms is not excluded. Using these terms is only for more conveniently describing and explaining the essence of the present invention, and interpreting them as any additional limitation is contrary to the spirit of the present invention.
Claims
1. A high-gloss and thick-walled light guide injection mold, comprising a fixed mold (1) for molding a headlight mask and a movable mold (2) for molding a headlight mask, characterized in that: The headlight mask forming fixed mold (1) is provided with two first molding seats (3), and the headlight mask forming movable mold (2) is provided with two second molding seats (4). The first molding seats (3) and the second molding seats (4) are arranged opposite to each other. The first molding seats (3) are provided with a molding recess, and the second molding seats (4) are provided with a molding protrusion (5). The molding protrusion (5) has a middle convex strip molding part (6) and a side convex rib molding part (7). The side convex rib molding part (7) and the middle convex strip molding part (6) are arranged alternately. The second molding seats (4) are provided with a lightweight part (8) on the outer side.
2. The high-gloss and thick-walled light guide injection mold according to claim 1 is characterized in that: The middle convex strip forming portion (6) comprises a middle convex frame (9) arranged in the forming protrusion (5), and a concave area (10) is formed between the middle convex frame (9) and the forming protrusion (5).
3. The high-gloss and thick-walled light guide injection mold according to claim 2, characterized in that: The side rib forming portion (7) comprises four outer rib forming grooves (11) arranged in the forming protrusion (5), and the outer rib forming grooves (11) are arranged alternately with the middle rib frame (9).
4. The high-gloss and thick-walled light guide injection mold according to claim 3, characterized in that: The molding protrusion (5) also has a cardboard molding portion (12) therein, and the cardboard molding portion (12) is located between the outer rib molding groove (11) and the middle convex frame (9).
5. The high-gloss and thick-walled light guide injection mold according to claim 4, characterized in that: The cardboard forming portion (12) comprises a cardboard forming groove (13) arranged between the outer rib forming groove (11) and the middle convex frame (9), and the length of the cardboard forming groove (13) is smaller than the length of the outer rib forming groove (11).
6. The high-gloss and thick-walled light guide injection mold according to claim 1, characterized in that: A top block placement portion (14) is provided in the second molding seat (4), and the top block placement portion (14) corresponds to the position of the molding protrusion (5).
7. The high-gloss and thick-walled light guide injection mold according to claim 6, characterized in that: The top block placement portion (14) comprises a plurality of top block placement chambers (15) arranged in the second molding seat (4).
8. The high-gloss and thick-walled light guide injection mold according to claim 7, characterized in that: The bottom of the top block placement chamber (15) is provided with a top rod sliding groove (16), and the top rod sliding groove (16) is connected to the top block placement chamber (15).
9. The high-gloss and thick-walled light guide injection mold according to claim 1, characterized in that: The lightweight portion (8) comprises a plurality of outer cavities (17) arranged outside the second molding insert (4).
10. The high-gloss and thick-walled light guide injection mold according to claim 9, characterized in that: A plurality of heat dissipation hole grooves (18) are connected to the inner side of the outer cavity (17).
Citation Information
Patent Citations
Automobile headlight mask forming die
CN219600237U