A welded bright surface sealing strip and its manufacturing method

Abstract

The invention belongs to the technical field of automobile sealing strip machining and provides a welding polished-face sealing strip and a manufacturing method of the welding polished-face sealing strip. A frame body is formed by splicing a framework part and a polished appearance face part in a segmental mode. The framework part and the polished appearance face part are spliced in a split mode into the integrally-connected frame body. The framework part and the polished appearance face part are spliced and connected in a welding mode. The welded frame body is rolled through multiple rollingwheel sets of a rolling machine unit to form a whole cross section, an elastic body material is continuously attached to the surface of the set frame body through an extrusion mold according to the shape of the whole cross section to be co-extruded, and the final sealing strip is formed. The sealing strip has the beneficial effects that use of a polished-face stainless steel material is reduced, production cost is reduced, the scheme of the framework part can be flexibly selected according to the actual requirement, the framework part is welded and formed in combination with the welding process, the strength of the whole sealing strip is enhanced, overall production efficiency is improved, meanwhile material combination is reasonably used, and requirements of clients are met.

Description

technical field [0001] The invention belongs to the technical field of automobile sealing strip processing, and in particular relates to a welding bright surface sealing strip and a manufacturing method thereof. Background technique [0002] Automotive sealing strips are suitable for waterproof sealing and decoration on the outside of car windows, such as figure 1 As shown, in the prior art, it includes a frame main body 3 and an organic elastomer 2 attached to the surface. The frame main body 3 is an integral structure, which is formed by roll forming with a bright stainless steel strip and re-laminated with other parts. Here, the frame The cross-section of the main body 3 is irregularly inverted V-shaped, where the part of the organic elastomer 2 covering the frame main body 3 becomes the skeleton part, while the other part of the frame main body is located on the outer side of the car and is exposed to the outer side of the car to become the bright surface part , so that...

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Problems solved by technology

[0002] Automotive sealing strips are suitable for waterproof sealing and decoration on the outside of car windows, such as figure 1 As shown, in the prior art, it includes a frame main body 3 and an organic elastomer 2 attached to the surface. The frame main body 3 is an integral structure, which is formed by roll forming with a bright stainless steel strip and re-laminated with other parts. Here, the frame The cross-section of the main body 3 is irregularly inverted V-shaped, where the part of the organic elastomer 2 covering the frame main body 3 becomes the skeleton part, while the other part of the frame main body is located on the outer side of the car and is exposed to the outer side of the car to become the bright surface part , so that it has a better appearance decoration effect, directly used as a car exterior decoration, the organic elastomer covers the skeleton part to form a lip that extends upwards, and the inner side of the lip is close to the car window when it is used. The surface of the glass is provided with a flocking layer to reduce the frictional resistance between the glass and the rubber strip when the glass is raised and lowered. When the automobile sealing strip of this structure is produced, it is made by repressing. When repressing, the bright surface part and the skeleton part They all use the same bright stainless steel material. Bright stainless steel requires special technology for production. When the skeleton part is also made of bright surface material, it is actually a waste, resulting in a low utilization rate of the bright stainless steel material. At the same time, the skeleton part material The same material is used for the bright surface, and the material of the skeleton part cannot be flexibly selected according to the actual characteristics of the product, so it is necessary to improve the existing manufacturing method

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