An improved foam forming mold

By improving the foaming mold, the simultaneous foaming of the skeleton and the faceplate is achieved using pneumatic suction cups and negative pressure sealing technology, which solves the problems of low production efficiency and poor sealing effect, and realizes efficient and leak-free foaming molding.

CN224510228UActive Publication Date: 2026-07-17SHANGHAI GUHAN AUTOMOTIVE TRIMMINGS MOULD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI GUHAN AUTOMOTIVE TRIMMINGS MOULD CO LTD
Filing Date
2025-07-24
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The existing production process of car armrests suffers from low production efficiency, poor sealing effect and easy material leakage, especially the formation of process edges during the foaming process.

Method used

An improved foaming mold is used, and the skeleton and the faceplate are adsorbed by a pneumatic suction cup. The sealing block and negative pressure are used for sealing, and the controller controls the air passage and air hole solenoid valve to realize the synchronous foaming molding of the skeleton and faceplate.

Benefits of technology

It improves production efficiency, avoids material leakage, and is less likely to form process edges during foaming, thus simplifying the operation process.

✦ Generated by Eureka AI based on patent content.

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Abstract

An improved foaming forming die comprises an upper base plate and a lower base plate, a movable die is arranged on the upper base plate, a fixed die is arranged on the lower base plate, the upper base plate and the lower base plate are guided and closed by guide columns, a plurality of pneumatic suction cups for adsorbing skeletons are arranged on the movable die, a fixed die base plate for placing a surface sleeve is arranged in the middle of the fixed die, a plurality of air holes for adsorbing the surface sleeve are arranged on the fixed die base plate, the pneumatic suction cups and the air holes are respectively connected to external air extraction equipment through electromagnetic valves and gas channels, three sealing blocks capable of pivoting up and down are arranged on the fixed die, and the three sealing blocks are respectively placed at the edges of the left, right and front sides of the fixed die base plate. After the surface sleeve is placed into the lower die, the sealing blocks are used to press and adsorb the surface sleeve through the air holes by negative pressure extraction, foaming material is directly injected into the surface sleeve, the skeletons are closed, the sealing effect is good, the material is not easy to leak, the surface sleeve and the skeletons are integrally formed during foaming, the process edge is avoided, the secondary supplementary foaming process is saved, the operation process is simple, and the production efficiency is high.
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Claims

1. An improved foaming molding die, comprising an upper substrate (1) and a lower substrate (2), wherein a movable mold (11) is disposed on the upper substrate (1) and a fixed mold (21) is disposed on the lower substrate (2), and the upper substrate (1) and the lower substrate (2) are aligned and guided by guide posts (3) to close the mold, characterized in that: The moving mold (11) is provided with a plurality of pneumatic suction cups (12) for adsorbing the skeleton (5). The gas channel of the pneumatic suction cup (12) is connected to an external air extraction device. The gas channel is provided with a normally closed air passage solenoid valve. The fixed mold (21) is provided with a fixed mold base plate (22) for placing the face mask (4) in the middle. The fixed mold base plate (22) is provided with a plurality of air holes (23) for adsorbing the face mask (4). The air holes (23) are connected to an external air extraction device. The connection channel between the air holes (23) and the external air extraction device is provided with a normally closed air hole solenoid valve. The fixed mold (21) is provided with three sealing blocks (24) that can pivot up and down. The three sealing blocks (24) are respectively placed at the left, right and front edges of the fixed mold base plate (22).

2. An improved foam forming mold as claimed in claim 1, wherein: It also includes a controller, the output of which is connected to the control terminals of the air passage solenoid valve and the air orifice solenoid valve respectively. The moving mold (11) is provided with a proximity switch (13) in the middle, and the signal output terminal of the proximity switch (13) is connected to one input terminal of the controller.

3. An improved foam forming mold as defined in claim 1 wherein: One signal output terminal of the controller is connected to the control terminal of the external air extraction device.