Injection mold applied to automobile products

Abstract

The utility model discloses an injection mold applied to automobile products, which comprises a front mold assembly, a front mold core, a rear mold core, a rear mold assembly and a molding cavity formed between the front mold core and the rear mold core, the forming cavity internally comprises a first forming structure used for forming a panel part of a product, a second forming structure used for forming a first bent part of the product, a third forming structure used for forming a second bent part of the product and a fourth forming structure used for forming a protruding part of the product, and the second forming structure comprises a mold core structure inserted into the forming cavity. And the fourth forming structure comprises a forming insert pin matched with the convex part. According to the utility model, the loss of raw materials is reduced, the sprue is attractive, the forming period is shortened, and the production speed is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold applied to automotive products. Background Art

[0002] An injection mold is a tool that can shape molten plastic into plastic parts with a certain shape, and can process a series of plastic parts with different shapes and sizes. The automotive industry widely uses injection molding production. The existing conventional molds cannot meet the production requirements in terms of production speed, with problems such as high raw material consumption, unappealing gate, and slow product forming speed. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides an injection mold applied to automotive products, which reduces the loss of raw materials, has an appealing gate, shortens the molding cycle, and improves the production speed.

[0004] To achieve the above object, the utility model provides the following technical solutions:

[0005] An embodiment of the utility model provides an injection mold applied to automotive products, which is characterized in that it includes: a front mold assembly, a front mold core, a rear mold core, a rear mold assembly, and a molding cavity formed between the front mold core and the rear mold core. The front mold assembly includes a hot runner structure. The molding cavity includes a first molding structure for molding the product panel part, a second molding structure for molding the first bending part of the product, a third molding structure for molding the second bending part of the product, and a fourth molding structure for molding the protruding part of the product. The second molding structure includes a core structure inserted into the molding cavity. The fourth molding structure includes a molding insert pin matching the protruding part of the product.

[0006] According to some embodiments of the utility model, the second molding structure includes a first groove provided on the rear mold core. The core structure includes a core seat slidably connected to the rear mold assembly, a first molding part provided on the first groove and connected to one side of the core seat, and an inclined guide post fixed on the front mold core and passing through the core seat. The first molding part and the first groove jointly mold the first bending part.

[0007] According to some embodiments of the utility model, a sealing ring is provided between the core seat and the first molding part.

[0008] According to some embodiments of the utility model, a pin groove is provided on the rear mold core. The molding insert pin is arranged in the pin groove. The molding insert pin includes a first convex block provided at its top and a limiting block provided at its bottom. The first convex block and the pin groove jointly mold the protruding part.

[0009] According to some embodiments of the present utility model, the first forming structure includes a second convex block provided on the rear mold core and a second groove provided on the front mold core and matching with the second convex block, for forming the boss structure of the product panel part.

[0010] According to some embodiments of the present utility model, the first forming structure includes a third groove provided on the second convex block and a third convex block provided on the second groove and matching with the third groove, for forming the inner groove structure of the product panel part.

[0011] According to some embodiments of the present utility model, the first forming structure includes a fourth convex block horizontally provided on the second convex block, for forming the horizontal groove structure of the product panel part.

[0012] According to some embodiments of the present utility model, the third forming structure includes a fourth groove provided on one side of the first forming structure and a fifth convex block provided on the front mold core and matching with the fourth groove, and the fourth groove and the fifth convex block jointly form the second bending part.

[0013] According to some embodiments of the present utility model, the hot runner structure includes a support plate, a fifth groove provided in the support plate, a hot runner plate provided on the fifth groove, an electric heating structure provided on the hot runner plate, and a needle valve type hot nozzle structure penetrating through the front mold assembly.

[0014] According to some embodiments of the present utility model, the hot runner plate of the flow splitting structure is placed in the fifth groove, the needle valve type hot nozzle structure includes a primary hot nozzle structure provided in the middle of the hot runner plate and secondary hot nozzle structures respectively arranged on the four sides of the hot runner plate, the electric heating structure is arranged around each hot nozzle structure, and a wire slot is provided on one side of the fifth groove close to the mold edge.

[0015] The present utility model has at least the following beneficial effects:

[0016] Adopting the hot runner structure can greatly reduce the loss of raw materials, has no gate marks, improves the surface quality, significantly shortens the cooling time, can carry out continuous injection molding, improves the production speed, meets the production requirements, the forming structures cooperate with each other for one-time demolding, and the forming insert pins can be replaced when damaged, without the need to scrap the whole mold, reducing the production cost. Description of the Drawings

[0017] Figure 1 It is a schematic structural view of the automotive terminal cover product of the present utility model;

[0018] Figure 2 It is a side view of the automotive terminal cover product of the present utility model;

[0019] Figure 3 Schematic structural diagram of an embodiment of the present utility model;

[0020] Figure 4 Schematic structural diagram of the rear mold core and rear mold assembly of an embodiment of the present utility model;

[0021] Figure 5 Schematic structural diagram of the front mold core of an embodiment of the present utility model;

[0022] Figure 6 Of an embodiment of the present utility model Figure 4 Enlarged view of the marked position A;

[0023] Figure 7 Of an embodiment of the present utility model Figure 4 Enlarged view of the marked position B;

[0024] Figure 8 Of an embodiment of the present utility model Figure 4 Enlarged view of the marked position C;

[0025] Figure 9 Schematic structural diagram of the core structure of an embodiment of the present utility model;

[0026] Figure 10 Schematic structural diagram of the forming insert pin of an embodiment of the present utility model;

[0027] Figure 11 Schematic structural diagram of the hot runner structure of an embodiment of the present utility model. Detailed implementation manners

[0028] The present utility model provides the following description with reference to the accompanying drawings to help a comprehensive understanding of various embodiments of the present utility model as defined by the claims and their equivalents. The description includes various specific details to facilitate understanding, but these details should be regarded as merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the present utility model.

[0029] In the description of the present utility model, orientation descriptions are involved. For example, the orientation or positional relationship indicated by up, down, front, rear, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0030] It should be understood that when an element (e.g., the first element) is "connected" to another element (e.g., the second element), the element can be directly connected to the other element, or there can be an intermediate element (e.g., the third element) between the element and the other element.

[0031] An embodiment of the present utility model provides an injection mold applied to automotive products. As Figures 1-11 shown, it includes a front mold assembly 101, a front mold core 102, a rear mold core 103, a rear mold assembly 104, and a molding cavity 105 formed between the front mold core 102 and the rear mold core 103. The front mold assembly 101 includes a hot runner structure 6, which is convenient for better filling the cavity, reducing warpage deformation, and improving product quality. As Figures 1-2 shown in the schematic structural diagram of the automotive terminal cover product, the product includes a panel part 710, a first bending part 720, a second bending part 730, and a protruding part 740. The molding cavity 105 includes a first molding structure 2 for molding the panel part 710 of the product, a second molding structure 3 for molding the first bending part 720 of the product, a third molding structure 4 for molding the second bending part 730 of the product, and a fourth molding structure 5 for molding the protruding part 740 of the product. The second molding structure 3 includes a core structure 310 inserted into the molding cavity 105. The first bending part 720 is not in the same direction as the opening direction of the front and rear molds. The core structure 310 facilitates the demolding of the first bending part 720. The fourth molding structure 5 includes a molding insert pin 510 matching the protruding part 740 of the product. During the use of the mold, if there is a problem, only the relevant part needs to be replaced, and there is no need to scrap the entire mold. The design of the molding insert pin 510 effectively saves costs.

[0032] In some embodiments, as Figures 6-9 shown, the second molding structure 3 includes a first groove 320 provided on the rear mold core 103. The core structure 310 includes a core seat 311 slidably connected to the rear mold assembly 104, a first molding part 312 provided on the first groove 320 and connected to one side of the core seat 311, and an inclined guide post 313 fixed on the front mold core 102 and passing through the core seat 311. The first molding part 312 and the first groove 320 jointly mold the first bending part 720. When the mold is opened, the inclined guide post 313 moves along the front mold direction, and the core seat moves outward along the displacement of the inclined guide post 313, driving the separation of the first molding part 312 from the first bending part 720, without the need for secondary demolding and without damaging the structure.

[0033] Furthermore, as Figure 9 shown, a sealing ring 314 is provided between the core seat 311 and the first molding part 312 to prevent the liquid in the core pulling structure from flowing into the molding cavity 105.

[0034] In some embodiments, as Figure 6 、 10As shown in the figure, the rear mold core 103 is provided with a dowel pin groove 520, and the forming dowel pin 510 is arranged in the dowel pin groove 520. The forming dowel pin 510 includes a first bump 511 provided at its top and a limiting block 512 provided at its bottom. The first bump 511 and the dowel pin groove 520 jointly form a protruding portion 740. The protruding portion 740 is a long cylindrical structure with a notch. The first bump 511 forms a notch structure. The design of the forming dowel pin 510 effectively prevents the problem that a small and deep structure like the protruding portion 740 is easily damaged and the entire mold is scrapped. The limiting block 512 can not only prevent the dowel pin structure from protruding from the forming cavity 105, but also position the dowel pin.

[0035] In some embodiments, as Figure 5 , 6 shown, the first forming structure 2 includes a second bump 211 provided on the rear mold core 103 and a second groove 212 provided on the front mold core 102 and matching with the second bump 211, for forming the boss 711 structure of the product panel part. The product panel part 710 has a height difference, which is convenient for the forming of the panel.

[0036] Furthermore, as Figure 5 , 6 shown, the first forming structure 2 includes a third groove 221 provided on the second bump 211 and a third bump 222 provided on the second groove 212 and matching with the third groove 221, for forming the inner groove 712 structure of the product panel part. The third groove 221 is a circular bowl-shaped structure, which is convenient for forming the bowl-shaped groove structure on the panel part 710.

[0037] Furthermore, as Figure 5 , 6 shown, the first forming structure 2 includes a fourth bump 231 horizontally provided on the second bump 211, for forming the horizontal groove 713 structure of the product panel part, which is convenient for forming a structure with a smooth upper part and a grooved lower part of the product panel part 710.

[0038] In some embodiments, as Figure 5 , 8 shown, the third forming structure 4 includes a fourth groove 401 provided on one side of the first forming structure 2 and a fifth bump 402 provided on the front mold core 102 and matching with the fourth groove 401. The fourth groove 401 and the fifth bump 402 jointly form a second bending portion 730, which is convenient for demolding.

[0039] In some embodiments, as Figure 3 , 11As shown, the hot runner structure 6 includes a support plate 610, a fifth groove 611 provided in the support plate 610, a hot runner plate 620 provided on the fifth groove 611, an electrothermal structure 630 provided on the hot runner plate 620, and a needle valve type hot nozzle structure 640 penetrating through the front mold assembly 101. The electrothermal structure 630 can keep the product part into which the raw material is injected in a liquid state all the time. The needle valve type hot nozzle structure 640 is controlled pneumatically or hydraulically, effectively shortening the molding cycle, increasing the injection speed, having no sprue and runner, and improving the surface quality.

[0040] Further, as Figure 3 , 11 shown, the hot runner plate 620 of the shunt structure is placed in the fifth groove 611. The needle valve type hot nozzle structure 640 includes a primary hot nozzle structure 641 provided in the middle of the hot runner plate 620 and secondary hot nozzle structures 642 provided on the four sides of the hot runner plate 620. The electrothermal structure 630 is arranged around each hot nozzle. The fifth groove 611 is provided with a wire discharge groove 612 on the side close to the mold edge. Each shunt structure of the hot runner plate 620 having a shunt structure to the four sides is provided with a secondary hot nozzle structure 642, enabling the mold to form 4 products at one time. The electrothermal structure 630 arranged around each hot nozzle structure can control the temperature of each hot nozzle structure, increasing the production speed and making the gate beautiful.

[0041] The terms and words used in the above description and claims are not limited to the literal meanings, but are only used by the applicant to enable a clear and consistent understanding of the present utility model. Therefore, those skilled in the art should clearly understand that the above description of various embodiments of the present utility model is only for illustration, rather than for limiting the present utility model as defined by the appended claims and their equivalents.

Claims

1. An injection mold for automotive products, characterized in that: include: A front mold assembly (101), a front mold core (102), a rear mold core (103), a rear mold assembly (104), and a molding cavity (105) formed between the front mold core (102) and the rear mold core (103); the front mold assembly (101) includes a hot runner structure (6); the molding cavity (105) includes a first molding structure (2) for molding a panel portion of a product, a second molding structure (3) for molding a first bending portion of a product, a third molding structure (4) for molding a second bending portion of a product, and a fourth molding structure (5) for molding a protruding portion of a product; the second molding structure (3) includes a core structure (310) inserted into the molding cavity (105); and the fourth molding structure (5) includes a molding pin (510) matching the protruding portion of the product.

2. The injection mold for automobile products according to claim 1, characterized in that: The second molding structure (3) comprises a first groove (320) arranged on the rear mold core (103), the core structure (310) comprises a core seat (311) slidably connected to the rear mold assembly (104), a first molding portion (312) arranged on the first groove (320) and connected to one side of the core seat (311), and an inclined guide column (313) fixed on the front mold core (102) and passing through the core seat (311), the first molding portion (312) and the first groove (320) jointly forming a first bending portion.

3. The injection mold for automobile products according to claim 2, characterized in that: A sealing ring (314) is provided between the core seat (311) and the first molding portion (312).

4. The injection mold for automobile products according to claim 1, characterized in that: The rear mold core (103) is provided with a needle inserting groove (520), the molding needle (510) is arranged in the needle inserting groove (520), the molding needle (510) includes a first protrusion (511) arranged on the top thereof and a limiting block (512) arranged on the bottom thereof, and the first protrusion (511) and the needle inserting groove (520) jointly form a protrusion.

5. The injection mold for automobile products according to claim 1, characterized in that: The first molding structure (2) comprises a second protrusion (211) arranged on the rear mold core (103) and a second groove (212) arranged on the front mold core (102) and matching with the second protrusion (211), and is used for molding a boss structure of a product panel portion.

6. The injection mold for automobile products according to claim 5, characterized in that: The first molding structure (2) comprises a third groove (221) arranged on the second protrusion (211) and a third protrusion (222) arranged on the second groove (212) and matching the third groove (221), and is used for forming an inner groove structure of a panel part of a molding product.

7. The injection mold for automobile products according to claim 5, characterized in that: The first molding structure (2) comprises a fourth protrusion (231) arranged laterally on the second protrusion (211) and used for molding a transverse groove structure of a panel portion of a product.

8. The injection mold for automobile products according to claim 1, characterized in that: The third molding structure (4) comprises a fourth groove (401) arranged on one side of the first molding structure (2) and a fifth protrusion (402) arranged on the front mold core (102) and matching the fourth groove (401), and the fourth groove (401) and the fifth protrusion (402) jointly form a second bending portion.

9. The injection mold for automobile products according to claim 1, characterized in that: The hot runner structure (6) comprises a support plate (610), a fifth groove (611) arranged in the support plate (610), a hot runner plate (620) arranged on the fifth groove (611), an electric heating structure (630) arranged on the hot runner plate (620), and a needle valve type hot nozzle structure (640) penetrating the front mold assembly (101).

10. The injection mold for automobile products according to claim 9, characterized in that: The hot runner plate (620) with a diversion structure is placed in the fifth groove (611), the needle valve type hot nozzle structure (640) includes a primary hot nozzle structure (641) arranged in the middle of the hot runner plate (620) and secondary hot nozzle structures (642) arranged on four sides of the hot runner plate (620), the electric heating structure (630) is arranged around each hot nozzle structure, and the fifth groove (611) is provided with a cable arrangement groove (612) on one side close to the edge of the mold.

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