Special rubber sleeve composition for grinding and polishing of mobile phone glass

Abstract

The invention provides a special rubber sleeve composition for grinding and polishing of mobile phone glass. The rubber sleeve composition for grinding and polishing of mobile phone glass includes thefollowing components: in parts by mass, 60-90 parts of natural rubber and 10-40 parts of ethylene propylene diene rubber (EPDM), and a preparation method of the composition includes the following steps: mixing the natural rubber and EPDM according to the formula, putting the mixture in a rubber kneader for kneading so as to obtain kneaded rubber, putting the kneaded rubber into a vulcanizing machine, and performing vulcanization by using a hot vulcanization process so as to obtain the special rubber sleeve composition for grinding and polishing of the mobile phone glass. A rubber sleeve whichis prepared from the composition can be attached more closely to a grinding belt, and 30 mobile phone glass products or above can be ground through a grinding polishing rod which is sleeved by the rubber sleeve, wherein the quality of the ground products is stable, the cost of tool production is reduced greatly, and suitability for current large-scale and unmanned automated production requirements is achieved; and meanwhile through recycling and reusing of waste tools, losses are reduced, and requirements of green, environment-friendly and sustainable development are met.

Description

technical field [0001] The invention relates to the technical field of mobile phone glass grinding, in particular to a special rubber sleeve composition for mobile phone glass grinding and polishing and a method for producing glass grinding and polishing rods using the combination. Background technique [0002] With the development of technology, glass sheets are used more and more widely, for example, for building walls, for doors and windows, car windows, and for mobile phone glass. [0003] After the glass is drilled or grooved, the edge of the glass hole or groove is relatively rough, not smooth enough, and the fit is poor, making it difficult to connect external devices. For this purpose, the edge of the glass hole or groove needs to be ground and polished. Especially when it is used as a product with relatively high precision such as mobile phone glass, it needs more grinding and polishing. [0004] For this reason, the Chinese patent document CN201320578704.8 disclo...

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Problems solved by technology

[0005] Although this patent document can polish the hole position of the glass, it cannot realize the grinding of the edge of the hole position, and cannot meet the requirements for the processing accuracy of the glass hole position of the mobile phone.

For this reason, some manufacturers have developed a mobile phone glass hole grinding machine. The grinding head generally uses a metal rod jacket rubber tube, that is, an ordinary plastic tube, and then glues an abrasive belt on the outside of the plastic tube. The structure of the grinding head is simple and the loss is very large. , each grinding head can only grind 3-4 products, and the product quality is difficult to guarantee, the defective rate is high, and it is difficult to meet the needs of mass production

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