A precision pre-former for the manufacture of rubber seals

By introducing an extrusion shaft, cooling and cutting device into the rubber preforming machine, the problems of air bubbles and deformation in rubber seals during the extrusion process were solved, and high-quality rubber seals were produced.

CN224545276UActive Publication Date: 2026-07-24PINGXIANG CITY OKF SEALING PARTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
PINGXIANG CITY OKF SEALING PARTS CO LTD
Filing Date
2025-09-01
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

When extruding rubber seals, the existing rubber preforming machine does not change the extrusion pressure of the rubber raw material, making it difficult to eliminate air bubbles. Furthermore, high-temperature cutting can easily cause deformation and burrs in the seals, affecting the quality.

Method used

A precision preforming machine was designed, comprising an extrusion shaft, a cooling cylinder, and a cutting device. It eliminates air bubbles by gradually increasing the extrusion pressure, cools and dries the rubber using a liquid spray pipe and an air jet pipe, and then cuts the rubber seals to specifications using a cutting blade.

Benefits of technology

It effectively eliminates air bubbles in rubber, avoids high-temperature deformation, ensures the quality and shape accuracy of seals, and reduces the occurrence of burrs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a precise preforming machine for rubber sealing piece preparation, including fixed platform, the fixed platform left side top is fixed with and is shaped and is extruded and is cut off the section of thick bamboo, the extrusion shaft is rotatoryly established in the cavity of shaped and is extruded and is cut off the section of thick bamboo, the top of shaped and is extruded and is cut off the section of thick bamboo is fixed with and is fed into the hopper, the right -hand member of shaped and is extruded and is cut off the section of thick bamboo is equipped with the cooling cylinder, the left -hand member fixed establishment of cooling cylinder cavity is equipped with the liquid injection pipe, the right side fixed establishment of cooling cylinder cavity is equipped with the air injection pipe, the right -hand member fixed establishment of cooling cylinder is equipped with the fixed frame, the fixed frame is fixed and installed with motorized telescopic handle, the motorized telescopic handle bottom is equipped with the mobile seat, the mobile seat bottom is fixed with cutting knife, when rubber raw materials extrusion, avoid the generation of bubble, after preforming, first dry processing is carried out to rubber sealing piece, then through cutting knife will rubber sealing piece according to the specification of sealing piece and cut, effectively avoid the deformation situation of rubber sealing piece, improve the quality of rubber sealing piece.
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