Multipurpose pneumatic chuck and operating method thereof

Abstract

A multipurpose pneumatic chuck is characterized by comprising a power shaft, a cylinder, an ejector cone and a plurality of small shaft expanding sheets. One end of the power shaft is connected with a power source, and the other end of the power shaft is fixedly connected with a cylinder sleeve. The cylinder is disposed inside the cylinder sleeve. One end of the cylinder is fixedly connected with the cylinder sleeve, and the other end of the cylinder is connected with the ejector cone. The conical surface of the ejector cone is fitly sleeved with the small shaft expanding sheets. An operating method of the multipurpose pneumatic chuck includes: the cylinder discharges, the ejector cone retracts from hollow space among the small shaft expanding sheets, and axial radius of a shaft formed by the small shaft expanding sheets decreases; shaft expanding sheets of matching sizes are selected and fitted, and a spindle of a paper roll is sleeved to the shaft formed by the shaft expanding sheets; the cylinder inflates, the ejector cone approaches to the hollow space among the small shaft expanding sheets, the diameter of the shaft formed by the small shaft expanding sheets increases, and the shaft expanding sheets support the mandrel of the paper roll to immobilize the paper roll; the power shaft drives the held paper roll to act. The multipurpose pneumatic chuck is adaptable to paper roll spindles of various sizes, allows expanding sleeves having different spindles to be convenient to switch, and is efficient; tension is stable and reliable.

Description

(1) Technical field: [0001] The invention is applicable to the field of printing equipment, in particular to printing equipment using roll paper as processing material, and is a multi-purpose air-expanding chuck and its working method. (2) Background technology: [0002] The air-expanding collet is a clamping tool used to fix the roll material, and it is widely used in the unwinding and winding device of the roll material. [0003] Due to the different types and qualities of roll materials, the diameters of the mandrels are also different. Depending on the material of the reel to be processed, the rewinding or unwinding device needs to be replaced with an air-expanding chuck adapted to different diameters to clamp the reel paper with different diameters of the mandrel. Generally, the air-expanding chuck is connected to the motor, and many parts need to be disassembled and assembled. The replacement is time-consuming and laborious, which affects work efficiency. [0004] In...

AI Technical Summary

Problems solved by technology

Generally, the inflatable chuck is connected to the motor, and many parts need to be disassembled. The replacement is time-consuming and laborious, which affects work efficiency.

[0004] In order to solve this problem, some suppliers of air-expanding collets have introduced double-diameter mechanical collets, which are shaped like stepped shafts. This kind of mechanical collets can indeed be adapted to clamp rolls of two core shaft sizes, but If there are more than two types of replacement, it is obviously not applicable

Moreover, the double-diameter mechanical chucks are arranged in a row due to different shaft diameters. This structural mode occupies a wider format. When changing the web, it is necessary to adjust the web, so the difference between the webs with different shaft diameters It is not convenient to switch

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