Method and equipment for processing polytetrafluoroethylene sealing ring

Abstract

The invention discloses a method for processing a polytetrafluoroethylene sealing ring. The method comprises the following steps: 1) setting a hot melting mold, wherein the hot melting mold comprises an upper mold and a lower mold, a segment of die cavity is formed between the upper mold and the lower mold, and the end face of the segment of die cavity is matched with the end face of a sealing ring needing to be welded; setting a welding mechanism on the hot melting mold, wherein the welding mechanism comprises a heating device corresponding to the die cavity, a filler area and a material pressing device; 2) putting both ends of a cut sealing strip in the die cavity of the hot melting mold according to the set specification of the sealing ring, and corresponding the butt joint sites at the both ends of the sealing strip to the welding mechanism; 3) putting corresponding modified fillers in the filler area of the welding mechanism, heating the filler area through the heating device, pressing the filler area through the material pressing device after reaching a set temperature, and maintaining the pressure for a period of time until the butt joint sites at the both ends of the sealing strip are fully fused with the modified fillers to form the sealing ring. The invention further discloses equipment for implementing the method.

Description

technical field [0001] The invention relates to the processing of a polytetrafluoroethylene sealing ring, in particular to a processing method and equipment for the polytetrafluoroethylene sealing ring. Background technique [0002] With the development of modern industry, with the continuous rise of the technical level, large-scale mechanized equipment is becoming more and more popular, and the equipment is getting bigger and bigger to meet the high-quality requirements of different markets. In industrial production, hydraulic cylinders provide huge energy for product forming and equipment operation; in order to meet higher and higher forming pressures or other requirements, hydraulic cylinders are getting bigger and bigger. The sealing ring plays a vital role in the normal use of the hydraulic cylinder, but the traditional PTFE sealing ring processing technology is cold-pressed PTFE tube material, sintered and then turned, and a set of molds is often only It can process p...

AI Technical Summary

Problems solved by technology

The sealing ring plays a vital role in the normal use of the hydraulic cylinder, but the traditional PTFE sealing ring processing technology is cold-pressed PTFE tube material, sintered and then turned, and a set of molds is often only Able to process limited products of several specifications

The requirements for the supporting equipment for the entire seal processing are relatively high, and the cost of equipment and molds is large

[0003] In particular, when the cross-sectional shape of the PTFE sealing ring is irregular and the processing precision is high, the processing efficiency and forming precision of traditional methods and equipment cannot meet the requirements.

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