What method can do the trimming of silicone rubber products?

The production and sales of each silicone product may involve many processes, such as silicone buttons, commonly used processes include vulcanization molding, secondary vulcanization, silk screen printing, oil injection, laser engraving, punching, self-disassembly, process control, Trimming, etc. Below, the author focuses on sharing 3 trimming methods for silicone products.

1. Manual trimming is a commonly used method. The advantage is that the cost is low. The operator only needs to hold the knife and trim the overflow edge along the outer edge of the silicone product. However, the disadvantage is that the efficiency is low and the quality is difficult to guarantee. Especially for the products with complex configuration and high precision requirements, it is difficult to be completely and clean, and it is easy to damage the connection between the silicone product body and the overflow edge. Often, tooth marks and gaps are left, leaving oil leakage, air leakage and other residual problems that affect the sealing. in addition. The dependence of manual trimming on operational proficiency is also prominent.

Frozen trimming machine

2. Machine trimming. The advantage is the ability to improve efficiency and quality. The machine is usually a special electric trimmer with a rotating blade. The blade used needs to be highly matched to the size of the product. If the product has overflow on the inner and outer edges. 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 products with one mold and multiple cavities, matching tools can be designed according to the arrangement and distribution of the products. After the product is out of the mold. It can be put on the whole page, and the punching can be completed at one time. With the cooperation of heating, dozens of them can be repaired at a time. It is worth noting that the punching temperature must be mastered to prevent sticking after being too high.

3. Freeze trim. The improvement of the working efficiency and processing quality of the frozen trimming machine has its own advantages and the machine trimming has its own advantages. The process is to let the vulcanized product cool under freezing and dynamic conditions, so that the waste edge enters a state of embrittlement. Then, through the mutual friction between them, or under dynamic conditions such as rotation, vibration, and oscillation, the waste edges are removed by means of friction. Alternatively, make rigid pellet media. Impact the product to be repaired at a certain speed. Remove overflow. The disadvantage is the higher cost.

To sum up, the trimming process of silicone products is also an important process. For example, ES silica gel generally carries out this process according to the product itself and the existing equipment. If it is relatively small and the structure is relatively simple, manual work can be used. Trimming, which can control the cost very well. For example, when the structure is complex, large, and the customer has too high requirements on the product surface, machine trimming is generally used, so that under the guarantee of efficiency and time, it can be completed quickly. Trimming process of silicone products.