Demolding combined pulling block decomposition and pulling deformation structure of automobile bumper injection mold

Abstract

The utility model relates to the technical field of automobile injection molding part production, and particularly discloses an automobile bumper injection mold demolding combined pull block decomposition and pull deformation structure which comprises a pull block I (1), a pull block II (2), a T-shaped block (3), a limiting pin (4), a spring (5), a baffle block (6), a pull rod (7) and a guide rail (8). The automobile bumper injection mold demolding combined pull block decomposition and pull deformation structure comprises a pull block I (1), a pull block II (2), a T-shaped block (3), a limiting pin (4), a spring (5), a baffle block (6), a pull rod (7) and a guide rail (8), the combined pull block is ingenious in conception, scientific in design, reasonable and compact in structure, stable in effect, safe and reliable, the machining workload of a mold is optimized, and when the pull deformation distances of all parts of an injection molding part product are inconsistent, the purpose of different pull deformation distances of the pull block can be achieved by adopting the structure that the combined pull block is used for decomposing the pull deformation distances; products are prevented from being broken or inserted when the mold is demolded, and the product quality is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile injection molding production, especially to automobile bumper injection mold stripping combination pull block decomposition pull deformation structure. BACKGROUND

[0002] For the pull block and pull block guide rail structure of automobile bumper injection molding product mold, the prior art is fixed only because the pull block and guide rail are fixed, so the pull deformation distance (motion trajectory) of the pull block is also unique. When the pull deformation distance of different parts of the injection molding product is required to be inconsistent, some parts may have too much pull deformation distance, causing product damage, or too little pull deformation distance, causing product insertion damage. Moreover, when the mold space can only accommodate one pull block and guide rail space, the conventional pull block cannot meet the product requirements, becoming a technical problem. SUMMARY

[0003] In view of the shortcomings of the prior art, the utility model aims to provide an automobile bumper injection mold stripping combination pull block decomposition pull deformation structure, which solves the above technical problem by combining the pull block.

[0004] The technical scheme adopted by the utility model is as follows:

[0005] An automobile bumper injection mold stripping combination pull block decomposition pull deformation structure, comprising a pull block one, a pull block two, a T-shaped block, a limit pin, a spring, a stop block, a pull rod and a guide rail, characterized in that: the limit pin is fixedly installed on the pull block one and has a shaped groove, and is connected with one end of the pull rod, the other end of the pull rod is connected with the guide rail, the T-shaped block is provided with a blind hole and an empty slot corresponding to the limit pin part installed on the pull block one, and is slidingly installed in the T-shaped groove of the pull block one and fixedly connected with the pull block two through a screw, and the spring is installed in the blind hole of the T-shaped block and abuts against the stop block fixedly installed on the pull block two.

[0006] The automobile bumper injection mold stripping combination pull block decomposition pull deformation structure of the utility model has a clever design, is scientific in design, is reasonable and compact in structure, optimizes the processing workload of the mold, is stable in action, safe and reliable, and can realize different pull deformation distances of the pull block when the pull deformation distances of different parts of the injection molding product are inconsistent, avoid product damage or insertion damage during mold stripping, and ensure product quality. BRIEF DESCRIPTION OF DRAWINGS

[0007] The drawings described herein are used to provide a further understanding of the present application, constitute a part of the present application, and are used to explain the present application, and do not constitute an improper limitation on the present application.

[0008] Figure 1The utility model discloses a demoulding combined pull block decomposed pull deformation structure of automobile bumper injection mould,

[0009] Figure 2 For Figure 1 The middle automobile bumper A-A ladder (rotation) section view schematic diagram,

[0010] Figure 3 For Figure 2 The middle M1 part enlarged schematic diagram,

[0011] Figure 4 For Figure 2 The middle M2 part enlarged schematic diagram,

[0012] Figure 5 The utility model discloses a demoulding combined pull block decomposed pull deformation structure of automobile bumper injection mould,

[0013] Figure 6 For Figure 5 The middle M part one state enlarged schematic diagram,

[0014] Figure 7 For Figure 5 The middle M part another state enlarged schematic diagram,

[0015] Figure 8 For Figure 6 Right view section view schematic diagram,

[0016] Figure: 1-pull block one, 2-pull block two, 3-T-shaped block,

[0017] 4-limit pin, 5-spring, 6-baffle, 7-pull rod, 8-guide rail, 9-front mould, P-product (bumper), P1-pull edge one, P2-pull edge two, L-avoidance distance, L1-distance one, L2-distance two, S1-direction one, S2-direction two. DETAILED DESCRIPTION

[0018] In order to make the utility model's purpose, technical scheme and advantage more clearly clear, below combining with the drawing and example, this utility model carries out further detailed explanation.Should understand, the following described specific example only uses to explain the utility model, in these descriptions, need to pay attention to the key word, including "pull edge", "pull deformation" and "avoidance slot" etc., these only are in order to facilitate the description utility model and simplify the description, therefore can not be understood as the restriction of the utility model.

[0019] This embodiment takes the production of automobile bumper injection part P as an example, as shown in Figures 1-2 Bumper P has pull edge one P1 and pull edge two P2 two pull edges, see Figure 3 And Figure 4The front mold 9 of the mold has two pull edges, namely pull edge one P1 and pull edge two P2, which are stuck at the parting line. These need to be deformed by pulling in directions one (S1) and two (S2) respectively to allow the bumper P to be demolded intact. Pull edge one P1 requires a deformation distance of one L1, and pull edge two P2 requires a deformation distance of two L2. In this embodiment, distance one L1 is 1.5 mm, and distance two L2 is 8 mm. The problem is that if only one pull edge distance is used to demold both pull edges of the bumper P, it will inevitably damage the smaller pull edge one P1, or pull edge two P2 will be difficult to pull out and may be damaged. This utility model solves the above technical problem by using a combined pull block structure.

[0020] This utility model relates to a demolding assembly pull block structure for disassembling and stretching deformation of an automotive bumper injection mold, such as... Figure 5 As shown, the assembly includes a pull block 1, a pull block 2, a T-shaped block 3, a limiting pin 4, a spring 5, a stop block 6, a pull rod 7, and a guide rail 8. These components, along with the pull block 1 and pull block 2, are connected to form a combined pull block using a related connection structure. The pulling block 1 has a limiting pin 4 fixedly mounted on it and a T-shaped groove, connecting to one end of the pull rod 7. The other end of the pull rod 7 connects to the guide rail 8. The T-shaped block has a blind hole and a clearance groove corresponding to the location of the limiting pin 4 on the pulling block 1. (See [reference]). Figure 7 It is slidably installed in the T-shaped groove of the first pull block 1 and fixedly connected to the second pull block 2 by screws. The spring 5 is installed in the blind hole of the T-shaped block and abuts against the stop block 6 fixed on the second pull block 2.

[0021] In use, this utility model employs a combination of pull blocks to achieve the stretching deformation of the injection molded part P. First, the pull rod 7 pulls the pull block 1, stretching and deforming the pull edge P2, causing it to disengage from the front mold 9's abutment. See [link to relevant documentation]. Figure 5 However, due to the elastic compression of the combined pull block spring 5, the pull block 1 slides along the T-block 3 through the T-slot, without causing the pull block 2 to move, while the limiting pin 4 can still move within the clearance groove of the T-block 3; see also Figure 6 Next, the pull rod 7 pulls the first pull block 1, causing the limiting pin 4 to move a clearance distance L, which then contacts and pushes the T-block 3, subsequently pushing the second pull block 2 simultaneously, beginning to stretch and deform the first pull edge P1. This continues until both the first pull edge P1 and the second pull edge P2 are completely stretched and deformed, thus exiting the front mold 9. Then, the next demolding action can proceed. In this invention, the clearance distance L is theoretically determined based on the difference in stretch deformation between the two points of the injection molded part P, generally ranging from 2 to 18 mm. In this embodiment, it is the difference between distance L1 and distance L2, specifically 6.5 mm.

[0022] The above merely describes general implementation manners of the present application, and the present application can have various other implementation manners with modifications and changes for those skilled in the art, which are not described one by one here. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application is included in the protection scope required by the present application.

Claims

1. A kind of automobile bumper injection mold demolding combined pull block decomposes the structure of tensile deformation, including pull block one (1), pull block two (2), T-shaped block (3), limiting pin (4), spring (5), stop block (6), pull rod (7) and guide rail (8), it is characterized by: The said pull block one (1) is fixedly installed with a limiting pin (4) and is provided with a T-shaped slot, and is connected with one end of a pull rod (7), the other end of the pull rod (7) is connected with a guide rail (8), the T-shaped block is provided with a blind hole, and is provided with an empty slot corresponding to the part of the limiting pin (4) installed on the pull block one (1), is slidingly installed in the T-shaped slot of the pull block one (1), and is fixedly connected with a pull block two (2), the spring (5) is installed in the blind hole of the T-shaped block, and abuts against a stop block (6) fixed on the pull block two (2).

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