Foaming mold for automotive trim panel

Abstract

The utility model discloses an automotive trim panel foaming mould which is characterized by comprising a lower mould and an upper mould, a foaming cavity is arranged between the upper mould and the lower mould, the lower mould is a concave mould, the upper mould is a convex mould, a front end insert and a side edge insert are arranged on the lower mould, and the front end insert and the side edge insert are arranged on the lower mould. The front end insert and the side insert are provided with protruding ribs protruding towards the interior of the foaming cavity, and the top face of the front end insert and the top face of the side insert are provided with first sealing faces matched with the upper die. The mold has the beneficial effects that the mold is reasonable in structural design and easy to process, the production efficiency is improved by the two foaming mold cavities, the sealing effect of the mold is good, the flash rate is obviously reduced, the foaming quality is improved, and the procedure of manual trimming is reduced.

Description

A foaming mold for automotive interior panels Technical Field

[0001] This utility model relates to the field of molds, specifically to a foaming mold for automotive interior panels. Background Technology

[0002] To enhance tactile comfort, shock absorption, and a luxurious feel, automotive interior components (such as dashboards, door panels, armrests, and headrests) commonly employ a polyurethane (PU) foaming process to coat the surface of the structural frame with an elastic foam layer. This process involves injecting a mixture of materials under high pressure into a closed mold, where the foaming reaction occurs and the foam adheres to the surface, ultimately forming a one-piece composite structure. The design and manufacturing quality of the foaming mold directly determine product yield, production efficiency, and cost control.

[0003] Automotive interior parts are mostly three-dimensional irregular curved surfaces (such as dashboards with sharp angles and multi-curved door panels). Traditional molds use straight parting surfaces, which easily create stepped gaps in the transition area of ​​the curved surface after mold closing, leading to PU material leakage (overflow rate >12%). This requires manual trimming, increasing costs and damaging the surface texture. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this utility model provides a foaming mold for automotive interior panels, which has a simple structure, reasonable design, good sealing effect, and high production efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A foaming mold for automotive interior panels, characterized in that: it includes a lower mold and an upper mold, with a foaming cavity between the upper mold and the lower mold, the lower mold being a concave mold and the upper mold being a convex mold, the lower mold being provided with a front end insert and a side insert, the front end insert and the side insert having protruding ribs extending into the foaming cavity, and the top surface of the front end insert and the side insert having a first sealing surface that mates with the upper mold.

[0007] Furthermore, the upper mold has mold-closing bosses at the four corners of its bottom surface, and the lower mold has mold-closing grooves corresponding to the mold-closing bosses.

[0008] Furthermore, the lower mold has a positioning boss, and the bottom surface of the side insert has a positioning groove corresponding to the positioning boss. The side insert is fastened to the lower mold by screws.

[0009] Furthermore, the lower mold has an inlay groove, the front insert is positioned in the inlay groove, and is fastened to the lower mold by screws.

[0010] Furthermore, there are two foaming cavities symmetrically arranged between the upper mold and the lower mold, the middle part of the lower mold protrudes, and the middle part of the lower mold has a second sealing surface that mates with the upper mold.

[0011] The beneficial effects of this utility model include: reasonable mold structure design, easy mold processing, two foaming mold cavities improve production efficiency, good mold sealing effect, significantly reduced overflow rate, improved foaming quality, and reduced manual trimming process. Attached Figure Description

[0012] Figure 1 is a structural schematic diagram of this utility model;

[0013] Figure 2 is a schematic diagram of the lower mold structure of this utility model;

[0014] Figure 3 is a cross-sectional view of this utility model. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0016] A foaming mold for automotive interior panels, as shown in Figures 1-3, includes a lower mold 1 and an upper mold 2. A foaming cavity 8 is formed between the upper mold 2 and the lower mold 1, where the lower mold 1 is a concave mold and the upper mold is a convex mold. The lower mold 1 is provided with a front insert 3 and a side insert 4, both of which have protruding ribs 5 extending into the foaming cavity. The front insert 3 and the side insert 4, together with the lower mold 1, constitute the lower mold cavity structure. The top surfaces of the front insert 3 and the side insert 4 have a first sealing surface 6 that mates with the upper mold 2. Two symmetrically arranged foaming cavities are formed between the upper mold 2 and the lower mold 1. The lower mold 1 protrudes in the middle and has a second sealing surface 7 in the middle that mates with the upper mold 2. The mold structure is rationally designed, easy to process, and the two foaming cavities improve production efficiency. The mold has a good sealing effect and significantly reduces overflow.

[0017] To ensure high mold closing accuracy and good sealing effect, the upper mold 2 in this embodiment has mold closing bosses 21 at the four corners of its bottom surface, and the lower mold 1 has mold closing grooves 11 corresponding to the mold closing bosses 21. When the mold is closed, the mold closing bosses 21 and the mold closing grooves 21 work together to achieve precise positioning of the upper and lower molds.

[0018] To ensure high positioning accuracy of the side insert 4, the lower mold 1 in this embodiment has a positioning boss 12, and the bottom surface of the side insert 4 has a positioning groove 41 corresponding to the positioning boss 12. The side insert 4 is fastened to the lower mold 1 by screws. The lower mold 1 has an inlay groove, and the front insert 3 is positioned in the inlay groove and fastened to the lower mold 1 by screws.

[0019] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A foaming mold for automotive interior panels, characterized in that: It includes a lower mold (1) and an upper mold (2), with a foaming cavity (8) between the upper mold (2) and the lower mold (1). The lower mold (1) is a concave mold, and the upper mold is a convex mold. The lower mold (1) is provided with a front end insert (3) and a side insert (4). The front end insert (3) and the side insert (4) have ribs (5) protruding into the foaming cavity. The top surface of the front end insert (3) and the side insert (4) has a first sealing surface (6) that cooperates with the upper mold (2).

2. The automotive interior panel foaming mold according to claim 1, characterized in that: The upper mold (2) has mold-closing bosses (21) at the four corners of its bottom surface, and the lower mold (1) has mold-closing grooves (11) corresponding to the mold-closing bosses (21).

3. The automotive interior panel foaming mold according to claim 1, characterized in that: The lower mold (1) has a positioning boss (12), and the bottom surface of the side insert (4) has a positioning groove (41) corresponding to the positioning boss (12). The side insert (4) is fastened to the lower mold (1) by screws.

4. The automotive interior panel foaming mold according to claim 1, characterized in that: The lower mold (1) has an inlay groove, and the front insert (3) is positioned in the inlay groove and is fastened to the lower mold (1) by screws.

5. The automotive interior panel foaming mold according to claim 1, characterized in that: The upper mold (2) and the lower mold (1) have two foaming cavities arranged symmetrically from left to right. The lower mold (1) protrudes in the middle and has a second sealing surface (7) in the middle that mates with the upper mold (2).

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