Sealing structure between mold frame and foaming device in EPP foaming process
A technology of foaming equipment and sealing structure, applied in the field of sealing structure, which can solve the problems of short life of circular sealing strip 1, influence on production process, leakage of steam and compressed air, etc., achieve product quality assurance, save use cost, and reduce installation effect of difficulty
Pending Publication Date: 2020-01-10
上海子元汽车零部件有限公司
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Problems solved by technology
However, in the actual production process, due to the use of high-pressure steam, compressed air and water, the circular sealing strip 1 will be deformed under pressure, and the life of the circular sealing strip 1 will be very short in the way of interference assembly. Short, and the biggest problem is that steam, compressed air, and water will leak from the gap between the mold frame 2 and the foaming equipment plane 3 due to the shape deformation of the circular sealing strip 1, which affects the normal production process
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[0026] Such as Figure 4 The sealing structure between the mold frame and the foaming equipment shown in the EPP foaming process includes a sealing strip installation cavity 4 arranged at the bottom of the mold frame 2, a foaming equipment plane 3 arranged below the mold frame 2, and a setting A clip-on sealing strip 5 that fits in the sealing strip installation cavity 4 and is compatible with the foaming equipment plane 3 . Such as image 3 As shown, the clip-on sealing strip 5 includes a vertical part 501 arranged in the sealing strip installation cavity 4 along the vertical direction, a horizontal part 502 arranged on the top side of the vertical part 501 along the horizontal direction, and a horizontal part 502 arranged along the oblique direction. An inclined portion 503 on the bottom side of the vertical portion 501 and in contact with the plane 3 of the foaming device.
[0027] Wherein, the bottom of the inclined portion 503 is in contact with the plane 3 of the foami...
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The invention relates to a sealing structure between a mold frame and a foaming device in an EPP foaming process. The sealing structure comprises a sealing strip installation cavity formed in the bottom of the mold frame, a foaming device plane arranged below the mold frame and a clamping fixing type sealing strip arranged in the sealing strip installation cavity and matched with the foaming device plane. The clamping fixing type sealing strip comprises a vertical part arranged in the sealing strip installation cavity in the vertical direction, a horizontal part arranged on one side of the topof the vertical part in the horizontal direction and an inclined part arranged on one side of the bottom of the vertical part in the inclined direction and making contact with the foaming device plane. Compared with the prior art, by designing the clamping fixing type sealing strip in the special shape and the corresponding sealing structure, the leakage problem of steam, compressed air and cooling water between the mold frame and the foaming device plane in the EPP foaming production process is solved, stability of the production process can be higher, the product quality is ensured, the production efficiency is substantially improved, and the energy consumption is lowered.
Description
technical field [0001] The invention belongs to the technical field of foaming material preparation, and relates to a sealing structure between a mold frame and foaming equipment in the EPP foaming process. Background technique [0002] At present, in the foam molding process of EPP (expanded polypropylene), the main method between the mold frame and the plane of the foaming equipment is such as figure 1 The circular sealing strip 1 shown performs the sealing. Such as figure 2 As shown, when the circular sealing strip 1 is assembled to the bottom of the mold frame 2, the deformation of the circular sealing strip 1 is completely relied on for interference fixing, so as to seal the gap between the foaming equipment plane 3 and the mold frame 2. However, in the actual production process, due to the use of high-pressure steam, compressed air and water, the circular sealing strip 1 will be deformed after being subjected to pressure. In the interference assembly mode, the servi...
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IPC IPC(8): B29C44/34
CPCB29C44/35
Inventor 季云祥
Owner 上海子元汽车零部件有限公司