Injection mold for automobile bumper

Abstract

The utility model discloses an injection mold for an automobile bumper. The upper surface of a male mold plate is connected with a base plate through a C plate, the upper surface of the base plate is connected with a T plate through an R plate, a female mold plate is matched with the male mold plate, an ejection plate is movably arranged between the male mold plate and the T plate, and a plurality of ejector pins are arranged on the lower surface of the ejection plate. A male die at the bottom of the male die plate is matched with a die groove in the upper surface of the female die plate, ejector pin guide holes are formed in a plurality of point positions, located on the male die, in the male die plate, ejector pins correspond to the ejector pin guide holes in a one-to-one mode and are in sliding fit with the ejector pin guide holes, a plurality of feeding channels are formed in the female die plate, and the feeding channels are symmetrically distributed on the two sides of the die groove of the female die plate. When the bumper is formed and demoulded, the bumper is uniformly stressed through the uniformly distributed ejector pins, so that the bumper is prevented from being damaged due to non-uniform stress during demoulding, and meanwhile, the symmetrical parts of the feeding channels are positioned on the two sides of the mould cavity of the female mould plate, and materials are concentrated from the two sides to the middle during feeding, so that the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of bumper mold technology, specifically to an injection mold for automobile bumpers. Background Technology

[0002] The front and rear bumpers of a car not only serve a decorative function, but more importantly, they are safety devices that absorb and mitigate external impacts, protect the car body, and safeguard the safety of the occupants.

[0003] Most car bumpers are injection molded. Currently, most car bumper injection molds use a single inlet channel to fill the mold cavity during injection, resulting in low injection efficiency and easy damage during direct demolding, leading to a higher defect rate. Therefore, there is an urgent need for an improved technology to solve this problem in the existing technology. Utility Model Content

[0004] The purpose of this invention is to provide an injection mold for automobile bumpers to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an injection mold for an automobile bumper, comprising a male mold plate, a female mold plate, C plates, R plates, pad plates, T plates, L plates, first guide pillars, a push plate, and ejector pins. The upper surface of the male mold plate is provided with several C plates, the upper surface of the C plates is connected to the pad plates, the upper surface of the pad plates is connected to two R plates, the upper surface of the R plates is connected to the T plates, the lower surface of the female mold plate is connected to the L plates, the female mold plate and the male mold plate cooperate with each other, several first guide pillars are provided between the male mold plate and the T plates, the push plate is movably disposed between the male mold plate and the T plates, and several ejector pins are provided on the lower surface of the push plate, the ejector pins slidingly engaging with the male mold plate.

[0006] The male template has a punch at its bottom and a mold groove on its upper surface. The punch and the mold groove cooperate with each other. The male template has ejector pin guide holes at multiple points located inside the punch. The ejector pins correspond one-to-one with the ejector pin guide holes and slide to cooperate. The female template has several feeding channels inside and the feeding channels are symmetrically distributed on both sides of the mold groove of the female template.

[0007] Preferably, the present invention provides an injection mold for an automobile bumper, wherein the T-plate, the pad plate and the corresponding R-plate are all provided with push-pull rod positioning holes, and a positioning ring is provided on the upper surface of the T-plate at the push-pull rod positioning hole.

[0008] Preferably, the present invention provides an injection mold for an automobile bumper, wherein the upper surface of the female mold plate is provided with a plurality of second guide posts, and the male mold plate is provided with a plurality of guide sleeves, wherein the guide sleeves correspond one-to-one with the second guide posts and slide in fit.

[0009] Preferably, the injection mold for automobile bumpers provided by this utility model has cooling water channels inside both the male and female mold plates.

[0010] Preferably, the injection mold for automobile bumpers provided by this utility model has several return channels inside the mother mold, and the return channels correspond one-to-one with the feed channels.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The male mold plate has ejector pin guide holes at multiple points inside the punch. A push plate is movably set between the male mold plate and the backing plate through the first guide post. Several ejector pins are set on the lower surface of the push plate. The ejector pins are guided and matched with each ejector pin guide hole. When the bumper is formed and demolded, the bumper is evenly stressed, thus ensuring that the bumper will not be damaged due to uneven stress during demolding. At the same time, the feeding channel is symmetrically located on both sides of the mold groove of the female mold plate. When feeding, the material is concentrated from both sides to the middle, thus greatly improving production efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a front view cross-sectional structural diagram of the present invention;

[0015] Figure 3 This is a side view cross-sectional structural diagram of the present invention;

[0016] Figure 4 A top view of the public template structure;

[0017] Figure 5 A schematic diagram of the parent template structure viewed from below;

[0018] Figure 6 This is a schematic diagram of the water channel structure for the male and female formwork.

[0019] In the diagram: Male template 1, Female template 2, C plate 3, R plate 4, Backing plate 5, T plate 6, L plate 7, First guide post 8, Push plate 9, Ejector pin 10, Punch 11, Mold groove 12, Ejector pin guide hole 13, Feed channel 14, Positioning ring 15, Second guide post 16, Guide sleeve 17, Cooling water channel 18, Return channel 19. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] Please see Figure 1-6 This utility model provides a technical solution: an injection mold for an automobile bumper, including a male mold plate 1, a female mold plate 2, C-plates 3, R-plates 4, pads 5, T-plates 6, L-plates 7, first guide pillars 8, push plates 9, and ejector pins 10. Several C-plates 3 are arranged around the outer periphery of the upper surface of the male mold plate 1. The upper surface of the C-plates 3 is connected to the pads 5. The upper surface of the pads 5 is connected to two R-plates 4. T-plates 6 are connected to the upper surface of the R-plates 4. The lower surface of the female mold plate 2 is connected to the L-plates 7. The female mold plate 2 and the male mold plate 1 cooperate with each other. Several second guide pillars 16 are arranged on the upper surface of the female mold plate 2. Several guide sleeves 17 are arranged on the male mold plate 1. The guide sleeves 17 correspond one-to-one with the second guide pillars 16 and slide in cooperation. The cooperation between the second guide pillars 16 and the guide sleeves 17... This ensures that the female template 2 and male template 1 can cooperate smoothly. Several first guide posts 8 are provided between the male template 1 and the T plate 6. The push plate 9 is movably set between the male template 1 and the T plate 6. Several ejector pins 10 are provided on the lower surface of the push plate 9. The ejector pins 10 are slidably engaged with the male template 1. The T plate 6, the pad plate 5 and the corresponding R plate 4 are all provided with push-pull rod positioning holes. A positioning ring 15 is provided on the upper surface of the T plate 6 at the push-pull rod positioning hole. The push-pull rod is installed through the push-pull rod positioning hole and the positioning ring 15, so that the external push-pull rod is connected to the push plate 9, thereby realizing the movement of the push plate 9. Cooling water channels 18 are provided inside the male template 1 and the female template 2 to cool the male template 1 and the female template 2 respectively.

[0023] The male template 1 has a punch 11 at its bottom and a mold groove 12 on its upper surface. The punch 11 and the mold groove 12 cooperate with each other. The male template 1 has ejector guide holes 13 at multiple points located on the punch 11. The ejector pins 10 correspond one-to-one with the ejector guide holes 13 and slide in cooperation. The female template 2 has several feeding channels 14 symmetrically distributed on both sides of the mold groove 12. The female template 2 also has several return channels 19 corresponding one-to-one with the feeding channels 14. The return channels 19 are used for venting and for recycling excess material during venting.

[0024] Assembly method and operating principle: First, install four C plates 3 on the upper surface of the male template 1. Then, connect the bottom of multiple first guide pillars 8 to the upper surface of the male template 1. Next, slide the push plate 9 to the first guide pillars 8. Then, connect the top of the first guide pillars 8 to the pad 5. Next, install two R plates 4 on the upper surface of the pad 5. Then, install the T plate 6 on the upper surface of the R plates 4 to complete the assembly of the upper part. Install the L plate 7 on the lower surface of the female template 2 to complete the assembly. Before use, connect the injection pipe to the inlet channel 14 of the female template 2 and the return pipe to the return channel 19. Then, connect the water inlet pipe and the water return pipe to the two ends of the cooling water channel 18 respectively. Connect the telescopic push rod through the positioning ring 15 and the push-pull rod positioning hole to the upper surface of the push plate 9. In use, the male template 1 moves closer to the female template 2 and closes the mold. The material is squeezed from both sides into the mold cavity formed by the punch 11 and the mold groove 12 through the feeding channel 14. After the bumper is formed, the male template 1 is opened, and the push plate 9 is pressed down, thereby driving each ejector pin 10 to press down. Each ejector pin 10 is located at various points on the bumper, thereby demolding the bumper. This utility model has a reasonable structure. The male template 1 has ejector pin guide holes 13 at multiple points on the punch 11. The push plate 9 is movably set between the male template 1 and the pad 5 through the first guide post 8. Several ejector pins 10 are set on the lower surface of the push plate 9. The ejector pins 10 are guided and matched with each ejector pin guide hole 13. When the bumper is formed and demolded, the bumper is evenly stressed, thereby ensuring that the bumper will not be damaged due to uneven stress during demolding. At the same time, the feeding channel 14 is symmetrically located on both sides of the mold groove 12 of the female template 2. When feeding, the material is concentrated from both sides to the middle, thereby greatly improving production 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 an automobile bumper, characterized by: The utility model provides a mould structure, including male template (1), female template (2), C plate (3), R plate (4), backing plate (5), T plate (6), L plate (7), first guide pillar (8), push top plate (9) and ejector pin (10), the periphery of male template (1) upper surface is provided with a plurality of C plate (3), the C plate (3) upper surface is connected with backing plate (5), the backing plate (5) upper surface is connected with two R plate (4), the R plate (4) upper surface is connected with T plate (6), female template (2) lower surface is connected with L plate (7), female template (2) and male template (1) are mutually cooperated, male template (1) and T plate (6) are provided with a plurality of first guide pillar (8) between, push top plate (9) is movably arranged between male template (1) and T plate (6), push top plate (9) lower surface is provided with a plurality of ejector pin (10), and the ejector pin (10) is slidably connected with male template (1); The male template (1) bottom is provided with a punch (11), the female template (2) upper surface is provided with a mould groove (12), the punch (11) and the mould groove (12) are mutually cooperated, the male template (1) inside is provided with ejector pin guide hole (13) at multiple point positions of punch (11), the ejector pin (10) and the ejector pin guide hole (13) are one-to-one correspondence and slidably connected, the female template (2) is provided with a plurality of feeding channels (14), and the feeding channels (14) are symmetrically distributed on both sides of the mould groove (12) of the female template (2).

2. The injection mold for an automobile bumper according to claim 1, characterized by: The T plate (6), backing plate (5) and corresponding R plate (4) are provided with push-pull rod positioning holes, and the T plate (6) upper surface and located at the push-pull rod positioning holes are provided with positioning rings (15).

3. The injection mold for an automobile bumper according to claim 1, characterized by: The female template (2) upper surface is provided with a plurality of second guide pillars (16), and the male template (1) is provided with a plurality of guide sleeves (17), the guide sleeves (17) and the second guide pillars (16) are one-to-one correspondence and slidably connected.

4. The injection mold for an automobile bumper according to claim 1, wherein: The male template (1) and the female template (2) are provided with cooling water channels (18) inside.

5. The injection mold for an automobile bumper according to claim 1, wherein: The female template (2) is further provided with a plurality of return channels (19) inside, and the return channels (19) and the feeding channels (14) are one-to-one correspondence.

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