Remove flash or burrs from the edges of rubber molded parts, plastic molded parts, metal castings or workpieces. This process is an important process to ensure the part size. The following briefly describes three trimming methods.
1 manual trimming
This is the most common method. The advantage is that the cost is low. The operator only needs to hold the tool and gradually trim the overflow edge along the outer edge of the silicone product. However, the disadvantage is that it is inefficient and the quality is difficult to guarantee. In particular, products with complex configuration and high precision are difficult to be thorough and clean, and it is easy to damage the connection between the silicone product body and the overflow edge. Often left dents, gaps, leaving oil leakage, leakage and other issues affecting the seal. In addition. The dependence of manual trimming on the proficiency of operations is also prominent.
2 machine trimming
The advantage is the ability to improve efficiency and quality. The machine is often used for special electric trimming machines with rotating blades. The blades used must be highly matched to the dimensions of the product. If there are spills on the inner and outer edges of the product. It can be designed as double-edged, multi-edged. To achieve a complete. The machining accuracy of mechanical trimming surpasses the manual trimming and the efficiency has also increased exponentially. Especially for a multi-cavity product, the matching cutters can be designed according to the arrangement and distribution of the products. After the product is released. Can be set on the whole board, punching done once. With the help of heating, it can repair dozens of times at a time. It is worth noting that the punching temperature must be mastered to prevent excessive blocking.
3 Frozen trimming
The improvement of work efficiency and processing quality and machine trimming have their own advantages. The soon-to-be-vulcanized finished product together with the waste edge will be trimmed in the frozen condition. The process is to let the vulcanized product cool down in the freezing and dynamic conditions and put the waste edge into a brittle state. Then by their mutual friction between themselves, or in the dynamic conditions of rotation, vibration, swing, etc., the waste edge is removed by friction. Or, make a rigid pellet medium. The impact of repairing the product at a certain speed. Remove the overflow. The disadvantage is the higher cost.