Patent ID: 8960749
Filing Date: 2015-02-24
Classification: B25B,B65G,H01L,Y10S

Abstract:
1. A vacuum suction apparatus for attracting a workpiece under a sucking action of a negative pressure fluid, comprising: a body having a port to which the negative pressure fluid is supplied; a suction part disposed on a lower portion of the body, and which is equipped with a flexible suction surface capable of being deformed in a manner conforming to the shape of a surface of the workpiece; and a sealing body disposed on a circumferential edge of the suction part for maintaining airtightness between the suction part and the body, wherein the suction surface is formed from a material that does not transfer chemical substances with respect to the workpiece when the workpiece is attracted thereto, wherein the suction part comprises: a base body disposed on a side of the port in the body and which is capable of allowing the negative pressure fluid to act therethrough to create a negative pressure on a side of the workpiece; a flexible suction sheet disposed on a lower portion of the body that attracts the workpiece under suction; and a flexible intermediate body disposed between the suction sheet and the base body and through which the negative pressure fluid can pass, and which is deformable together with the suction sheet, wherein the base body, the intermediate body and the suction sheet are stacked along a thickness direction, the rigidities of the base body, the intermediate body, and the suction sheet are set to become progressively lower in this order, and the flexibilities thereof are set to become progressively greater in this order, and wherein the material constituting the suction sheet is a thermoplastic resin.