The trimming of O-rings is divided into three categories: manual, mechanical and frozen. Let's follow the editor of Wholesale EPDM oxygen O-ring to have a simple understanding!
1. Manual trimming. The operator holds the tool and gradually repairs the overflow along the outer edge of the product. This is the original method. The efficiency is low and the quality is difficult to guarantee. Especially for the O-rings with small size and high precision requirements, it is difficult to make it very clean, and it is easy to damage the connection between the product body and the overflow. Teeth marks and nicks are often left, leaving behind oil and air leaks that affect the seal. in addition. The dependence of manual trimming on operational proficiency is also prominent.

2. Mechanical trimming. In order to improve efficiency and quality, mechanical trimming appeared. The most common one is a dedicated electric trimming machine with a rotating blade. The blade used must match the height of the product size. If the inner and outer edges of the product have overflow. It can be designed as double-edged and multi-edged. To achieve one-time completion. The machining accuracy of mechanical trimming exceeds that of manual trimming, and the efficiency is also doubled. Especially for a multi-cavity product with one mold, a matching tool can be designed according to the arrangement and distribution of the product. After the product is out of the mold. The whole page can be put on, and the punching can be completed at one time.
3. Frozen trimming. The vulcanized finished product and waste edges are removed under freezing conditions. With the selection, replacement of the freezing medium and the improvement of mechanical action, the freezing trimming has also undergone several generations of improvements, maturity and perfection, and the work efficiency and processing quality have been significantly improved.
The above is the editor of Wholesale EPDM oxygen O-ring: a brief introduction to the trimming of O-rings.