Injection mold for automobile lampshade

Abstract

The utility model discloses an injection mold for an automobile lampshade, which is characterized in that the lower surface of a T plate is connected with a plate A through a main R plate and a plurality of auxiliary R plates, the lower surface of the plate A is provided with a first convex mold and a second convex mold, the main R plate is provided with a runner, and a main feeding channel is arranged in the plate A and penetrates through the first convex mold; a connecting channel is formed in the plate A and located on one side of the main feeding channel in a bypass mode, the end, away from the main feeding channel, of the connecting channel communicates with an auxiliary feeding channel, the bottom of the auxiliary feeding channel penetrates through the second male die, a first die groove and a second die groove are formed in the upper surface of the plate B, the first male die is matched with the first die groove, and the second male die is matched with the second die groove. The structure is reasonable, heat dissipation of the upper portion of the plate A is facilitated while materials are saved through the R plate, the main feeding channel is communicated with the auxiliary feeding channel through the connecting channel, and the problem that feeding cannot be conducted at the second male die and the second die groove due to the fact that no runner exists at the auxiliary R plate is solved.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to an injection mold for automotive lamp covers. Background Technology

[0002] Injection molds are common manufacturing tools, primarily used to manufacture plastic injection-molded products. Most automotive lamp covers are made using injection molds. Currently, in automotive lamp cover injection molds, the R-plate is installed between the T-plate and A-plate, and the R-plate is generally a single-piece structure. Using a single-piece structure leads to two problems: increased material costs and reduced heat dissipation at the top of the upper mold. Furthermore, in multi-groove automotive lamp cover injection molds, the R-plate also has runners to divert material. Therefore, there is an urgent need for an improved technology to solve this problem in the existing technology, enabling the mold to save costs through the R-plate, improve heat dissipation, and not affect the material diversion in the multi-groove system. Utility Model Content

[0003] The purpose of this utility model is to provide an injection mold for automotive lamp covers to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an injection mold for automotive lamp covers, comprising a T-plate, a main R-plate, a secondary R-plate, an A-plate, a B-plate, an ejector plate, and an L-plate. The lower surface of the T-plate is provided with a main R-plate and several secondary R-plates. The bottoms of the main R-plate and secondary R-plates are connected to the A-plate. The lower surface of the A-plate is provided with a first punch and a second punch. The T-plate is provided with a gate. The lower surface of the T-plate is provided with a runner, which communicates with the gate. The A-plate has a main feed channel inside. The main R-plate has a through hole. The holes are connected to the flow channel and the main feed channel respectively. The main feed channel passes through the first punch. A connecting channel is opened inside the A plate and on one side of the main feed channel. The end of the connecting channel away from the main feed channel is connected to the secondary feed channel. The bottom of the secondary feed channel passes through the second punch. The upper surface of the L plate is connected to the B plate through several support columns and guide columns. The upper surface of the B plate is provided with a first mold groove and a second mold groove. The first punch cooperates with the first mold groove, the second punch cooperates with the second mold groove, and the push plate slides with the guide column.

[0005] Preferably, the present invention provides an injection mold for an automotive lamp cover, wherein the B plate has a plurality of ejector pin holes inside, the top of the ejector pin holes are connected to the first mold groove and the second mold groove, and the upper surface of the push plate is provided with a plurality of ejector pins, the ejector pins and the ejector pin holes are corresponding one to one and slidingly engaged.

[0006] Preferably, the present invention provides an injection mold for automotive lamp covers, wherein the T-plate is fastened to the main R-plate, the secondary R-plate and the A-plate by bolts respectively, the main R-plate is located above the first punch side, and each of the secondary R-plates is located above the second punch side.

[0007] Preferably, the automotive lamp cover injection mold provided by this utility model has lamp cover side snap-fit ​​forming grooves on both sides of the first mold groove and the second mold groove.

[0008] Preferably, in the automotive lamp cover injection mold provided by this utility model, guide rods are provided at the four corners of the lower surface of plate A, and guide sleeves are provided at the four corners of the upper surface of plate B. The guide rods and guide sleeves correspond one-to-one and guide each other.

[0009] Preferably, in the automotive lamp cover injection mold provided by this utility model, cooling water channels are provided in both plate A and plate B.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] The R-plate section consists of a main R-plate and multiple auxiliary R-plates. Compared with the traditional single-plate structure of the R-plate, it saves materials and facilitates heat dissipation at the top of the A-plate. Furthermore, the main feed channel is connected to the auxiliary feed channel through a connecting channel, which does not affect the problem of the second punch and the second mold slot being unable to feed due to the lack of flow channels at the auxiliary R-plate. In other words, even if the auxiliary R-plate has no flow channels, the mold can still adopt a double mold slot structure to ensure processing efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the cross-sectional structure of the present invention;

[0013] Figure 2 This is a side view of the structure of this utility model;

[0014] Figure 3 This is a top view of the structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the T-plate's top cross-section structure;

[0016] Figure 5 This is a top view of the structure of the present invention located at the main R plate and the auxiliary R plate;

[0017] Figure 6 This is a schematic diagram of the structure of plate A from below;

[0018] Figure 7 This is a top view of the structure of plate B;

[0019] Figure 8This is a perspective structural diagram of the T-plate, main R-plate, and secondary R-plate.

[0020] In the diagram: T plate 1, main R plate 2, secondary R plate 3, A plate 4, B plate 5, ejector plate 6, L plate 7, first punch 8, second punch 9, runner 10, main feed channel 11, connecting channel 12, secondary feed channel 13, support column 14, guide column 15, first mold groove 16, second mold groove 17, gate 18, ejector pin 19, lampshade side snap-fit ​​molding groove 20, guide rod 21, guide sleeve 22, cooling water channel 23, through hole 24. Detailed Implementation

[0021] The technical solution of this 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 this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] It should be noted that in the description of this utility model, the terms "inner", "outer", "upper", "lower", "both sides", "one end", "the other end", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0023] Please see Figure 1-8This utility model provides a technical solution: an injection mold for automotive lamp covers, including a T-plate 1, a main R-plate 2, secondary R-plates 3, an A-plate 4, a B-plate 5, a push plate 6, and an L-plate 7. A main R-plate 2 and several secondary R-plates 3 are disposed on the lower surface of the T-plate 1. The bottoms of the main R-plate 2 and secondary R-plates 3 are connected to the A-plate 4. The T-plate 1 is fastened to the main R-plate 2, secondary R-plates 3, and A-plate 4 respectively by bolts. The main R-plate 2 is located above one side of the first punch 8, and each secondary R-plate 3 is located above one side of the second punch 9, thereby achieving mutual connection between the T-plate 1, main R-plate 2, secondary R-plates 3, and A-plate 4. The lower surface of the A-plate 4 is provided with... There is a first punch 8 and a second punch 9. A T-plate 1 has a gate 18, and a runner 10 is provided on the lower surface of the T-plate 1, communicating with the gate 18. A main feed channel 11 is provided inside the A-plate 4. A through hole 24 is provided on the main R-plate 2, communicating with both the runner 10 and the main feed channel 11. The main feed channel 11 passes through the first punch 8. A connecting channel 12 is provided inside the A-plate 4, bypassing the main feed channel 11. The end of the connecting channel 12 away from the main feed channel 11 is connected to a secondary feed channel 13. The bottom of the secondary feed channel 13 passes through the second punch 9. The upper surface of the L-plate 7... The A plate 4 is connected to the B plate 5 via several support columns 14 and guide columns 15. The upper surface of the B plate 5 has a first mold groove 16 and a second mold groove 17. Guide rods 21 are provided at the four corners of the lower surface of the A plate 4, and guide sleeves 22 are provided at the four corners of the upper surface of the B plate 5. The guide rods 21 and guide sleeves 22 correspond one-to-one and guide each other. Through the guiding cooperation of the guide rods 21 and guide sleeves 22, the A plate 4 and B plate 5 can be smoothly molded together, and the first punch 8 can engage with the first mold groove 16, and the second punch 9 can engage with the second mold groove 17. Both sides of the first mold groove 16 and the second mold groove 17 are provided with lampshade side snap-fit ​​forming grooves 20. To achieve the connection between the lamp cover and the frame, the first punch 8 engages with the first mold groove 16, the second punch 9 engages with the second mold groove 17, the push plate 6 engages with the guide post 15, and the B plate 5 has several ejector pin holes inside, the top of which are connected to the first mold groove 16 and the second mold groove 17. The upper surface of the push plate 6 is provided with several ejector pins 19, which correspond one-to-one with the ejector pin holes and engage with them. Through the engagement of the ejector pins 19, it is convenient to push the product out after the lamp cover is formed, thus facilitating material discharge. Cooling water channels 23 are provided in both the A plate 4 and the B plate 5 to cool the material, the A plate 4, and the B plate 5.

[0024] Assembly method and operating principle: Place the main R plate 2 and each of the auxiliary R plates 3 in their corresponding positions on the upper surface of plate A 4, and align the holes. Then, place plate T 1 on the upper surface of the R plates and each of the auxiliary R plates 3. Use bolts to connect plate T 1, main R plate 2, auxiliary R plates 3, and plate A 4 together, so that main R plate 2 and auxiliary R plates 3 are supported between plate T 1 and plate A 4. Next, assemble the push plate 6 with the ejector pin 19 with the guide rod 21. The support rod passes through the push plate 6, and connect the two ends of the support rod and guide rod 21 to plate B 5 and plate L 7 respectively, completing the assembly. In use, when plate A4 and plate B5 are closed, the first punch 8 engages with the first mold groove 16, and the second punch 9 engages with the second mold groove 17. The material enters the runner 10 from the gate 18, passes through the through hole 24 of the main R plate 2, and enters the main feed channel 11. Subsequently, part of the material enters the mold cavity between the first punch 8 and the first mold groove 16 through the main feed channel 11, and the other part of the material enters the auxiliary feed channel 13 through the connecting channel 12, and enters the mold cavity between the second punch 9 and the second mold groove 17 through the auxiliary feed channel 13, completing the injection molding of the two lampshades. Then, the material is cooled by circulating cooling water. After cooling, the mold is opened, and the material is pushed out by the push plate 6 and the ejector pin 19 to complete the material discharge. This utility model has a reasonable structure. The R plate part is composed of a main R plate 2 and multiple auxiliary R plates 3. Compared with the traditional whole plate structure of R plate, it saves materials and facilitates heat dissipation at the top of A plate 4. In addition, the main feed channel 11 is connected to the auxiliary feed channel 13 through the connecting channel 12, which does not affect the problem that the second punch 9 and the second mold groove 17 cannot be fed due to the lack of flow channel 10 at the auxiliary R plate 3. That is, even if the auxiliary R plate 3 does not have flow channel 10, the mold can still adopt a double mold groove structure to ensure processing efficiency.

[0025] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.

[0026] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications and equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An injection mold for automotive lamp covers, characterized in that: The assembly includes a T-plate (1), a main R-plate (2), a secondary R-plate (3), an A-plate (4), a B-plate (5), a push plate (6), and an L-plate (7). The lower surface of the T-plate (1) is provided with a main R-plate (2) and several secondary R-plates (3). The bottoms of the main R-plate (2) and secondary R-plates (3) are connected to the A-plate (4). The lower surface of the A-plate (4) is provided with a first punch (8) and a second punch (9). The T-plate (1) is provided with a gate (18). The lower surface of the T-plate (1) is provided with a runner (10), which communicates with the gate (18). The A-plate (4) has a main feed channel (11) inside. The main R-plate (2) has a through hole (24), which is connected to the runner (10) and the main feed channel (11). 1) They are interconnected. The main feeding channel (11) passes through the first punch (8). A connecting channel (12) is provided inside the A plate (4) and on one side of the main feeding channel (11). The connecting channel (12) is connected to the auxiliary feeding channel (13) at one end away from the main feeding channel (11). The bottom of the auxiliary feeding channel (13) passes through the second punch (9). The upper surface of the L plate (7) is connected to the B plate (5) through several support columns (14) and guide columns (15). The upper surface of the B plate (5) is provided with a first mold groove (16) and a second mold groove (17). The first punch (8) cooperates with the first mold groove (16), and the second punch (9) cooperates with the second mold groove (17). The push plate (6) and the guide column (15) are in sliding cooperation.

2. The automotive lamp cover injection mold according to claim 1, characterized in that: The B plate (5) has several ejector pin holes inside. The top of the ejector pin holes is connected to the first mold groove (16) and the second mold groove (17). The upper surface of the push plate (6) is provided with several ejector pins (19). The ejector pins (19) correspond one-to-one with the ejector pin holes and slide together.

3. The automotive lamp cover injection mold according to claim 1, characterized in that: The T plate (1) is fastened to the main R plate (2), the secondary R plate (3) and the A plate (4) respectively by bolts. The main R plate (2) is located above the first punch (8) and each of the secondary R plates (3) is located above the second punch (9).

4. The automotive lamp cover injection mold according to claim 1, characterized in that: Both sides of the first mold groove (16) and the second mold groove (17) are provided with lampshade side snap-fit ​​forming grooves (20).

5. The automotive lamp cover injection mold according to claim 1, characterized in that: Guide rods (21) are provided at the four corners of the lower surface of plate A (4), and guide sleeves (22) are provided at the four corners of the upper surface of plate B (5). The guide rods (21) and guide sleeves (22) correspond to each other and are guided and cooperate.

6. The automotive lamp cover injection mold according to claim 1, characterized in that: Cooling water channels (23) are provided in both plate A (4) and plate B (5).

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