Mechanical air pressure expanding shaft used for winding and unwinding system on papermaking and printing packaging equipment

Abstract

The invention discloses a mechanical air pressure expanding shaft used for a winding and unwinding system on papermaking and printing packaging equipment. The mechanical air pressure expanding shaft comprises a core shaft body; a boss at one end of the core shaft body is inserted into a round groove of a flange; a cylindrical stand of the flange is sleeved with one end of a shaft pipe; a thrust piston is sleeved with the cylindrical stand of the flange, sleeved with a sealing cover and fixedly connected to the end of the cylindrical stand of the flange through bolts; guiding bands are furtherdisposed in the contact position of the thrust piston and the inner wall of the cylindrical stand of the flange; the core shaft body is sequentially sleeved with a plurality of disc chucks through oiling copper sleeves; the portions, between the disc chucks, of the core shaft body are sleeved with spacer bushes; the portions, at the tail ends of the disc chucks, of the core shaft body are sleevedwith springs; a boss at the other end of the core shaft body is arranged in an inner round groove of an end socket in a sleeved mode; and an outer round ring of the end socket is arranged in the otherend of the shaft pipe in a sleeved mode and connected through screws. The mechanical air pressure expanding shaft used for the winding and unwinding system on the papermaking and printing packaging equipment is compact in structure, novel in idea, large in working stroke and bearing capacity, long in service life, easy to maintain and convenient to repair; and the using accuracy is high, a shaftbody is made of a seamless steel tube, and therefore the non-deformability is high.

Description

technical field [0001] The invention relates to the technical field of food machinery, in particular to a mechanical air pressure shaft expansion shaft used in the winding and unwinding systems of papermaking and printing and packaging equipment. Background technique [0002] The air shaft is a special winding and unwinding shaft, that is, the shaft whose surface can protrude after high-pressure inflation, and the shaft whose surface part retracts quickly after deflation is called the air shaft. [0003] The air shaft and air sleeve are extremely convenient and quick to use. You only need to prepare your own air source, and the air pressure is controlled within the range of 6-8kg / cm2. ), as long as the air gun is inflated against the air nozzle on the air expansion shaft, it can withstand the external parts (such as a round paper tube), and when it is necessary to loosen the paper and unload, press the sliding outer part on the air nozzle with your hand Parts (such as round...

AI Technical Summary

Problems solved by technology

[0004] At present, the conventional air expansion shaft often fails to meet the production demand during use, and cannot fully meet the production demand. There are problems such as small gap between the expansion mandrel and the outer tube, large friction, and small load capacity.

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