Technology for manufacturing automobile door and window sealing strip

Abstract

The invention discloses a production process of a stamping steel ribbon for car doors and windows. After the processing and delivering of a steel strip uncoiler, a spot welder and a steel storage rack, the stamping steel ribbon is combined with the ejection of compact from the EPDM extruder in a composite head and then has a processing in a microwave vulcanizing slot and a hot air vulcanizing slot. A traction sends the stamping steel ribbon into a coating mold. The upper side in the coating mold is provided with a tilt flow passage and the lower side in the coating mold is provided with a horizontal flow passage, so as to result in a 15 degree to 45 degree angle between TPE and the composite EPDM of the three stamping ribbon vulcanized. The composite temperature range is from 80 Celsius system to 200 Celsius system. With the processing of a cooling tank and a cutting machine, the stamping steel ribbon with TPE composite layer is produced out. The invention makes the TPE be composite evenly and firmly with the composite EPDM of the three stamping ribbon. The invention has the advantages that the TPE composite layer has no expansion scab, no sparkling, no indentation, a curling stability and a even thickness. The invention is easy to be debugged for operators and has a high reliability, stability and production efficiency.

Description

Technical field: [0001] The invention relates to a manufacturing process of an automobile door and window sealing strip. Background technique: [0002] At present, in the production process of automobile door and window sealing strips, after completing the extrusion and vulcanization process of EPDM three-composite sealing strips, the TPE is extruded into thin sheets with an extruder, and then the TPE sheet is covered on the surface of the EPDM three-composite sealing strips. , Use several rollers to press the TPE sheet and EPDM together, and then use several rollers to wrap the TPE sheet around the lip end of EPDM, and finally press and press the pattern as a whole. Since all the rollers are manually operated, there is no fine-tuning system, the locking device of the rollers is unreliable, and there is no memory function, etc., the operator cannot control the pressure of the rollers on the TPE sheet, let alone make the pressure of each roller on the TPE sheet Consistently,...

AI Technical Summary

Problems solved by technology

Since all the rollers are manually operated, there is no fine-tuning system, the locking device of the rollers is unreliable, and there is no memory function, etc., the operator cannot control the pressure of the rollers on the TPE sheet, let alone make the pressure of each roller on the TPE sheet Consistent, such a process method is difficult for workers to master, debugging is also very difficult, and reliability and stability are poor

The adverse phenomena caused by these technical defects are: the pressure of the roller on the TPE is too small, the TPE sheet and EPDM are not tightly pressed, and peeling and blistering are easy to occur; when the pressure of the roller on the TPE is too large, the TPE will stick to the roller; When the pressure of each roller on the TPE is consistent, the surface of the TPE will be indented; the curling will be unstable; and the thickness of the rolled TPE composite layer will be uneven.

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