Wedge-block-type unwinding shaft used in production line of disposable hygienic products

Abstract

The invention relates to a wedge-block-type unwinding shaft used in a production line of disposable hygienic products. In the invention, a fixed shaft is a stepped shaft, a small-diameter section of the fixed shaft is sequentially sheathed with two guide sleeves, a spacer bush and a compression spring, and an end part of the small-diameter section of the fixed shaft is in threaded connection witha hand wheel; one end of the compression spring is positioned in a circular groove of the hand wheel, and the other end of the compression spring is in contact with an end face of the spacer bush; locking sleeves are sheathed on small-diameter sections of the two guide sleeves, sleeves are sheathed outside the locking sleeves, four axial expansion pin grooves are uniformly distributed on each sleeve, and each expansion pin groove is internally equipped with an expansion pin; each expansion pin is in the shape of a wedge block, and an oblique plane of each expansion pin corresponds to each locking sleeve; and a taper sleeve is inserted between the locking sleeve and the sleeve which are positioned at one end adjacent to the spacer bush, a conical tube is arranged at one side of the taper sleeve, a cylindrical tube is arranged at the other side of the taper sleeve, and the conical surface of the conical tube of the taper sleeve is in contact with the oblique planes of the four expansionpins in a fit manner. The wedge-block-type unwinding shaft has the advantages of compact and delicate structure and reasonable design, and is convenient in use; unwinding resistance can be controlledby adjusting the hand wheel; and material coils can be fixed, assembled and disassembled quickly through the expansion pins.

Description

technical field [0001] The invention belongs to the technical field of disposable sanitary products production line equipment, and in particular relates to a material unwinding and fixing shaft on a disposable sanitary product production line. Background technique [0002] The material unwinding fixed shaft is an important device in the disposable sanitary product production line. Through this device, some special materials that need passive unwinding on the disposable sanitary product production line can be unrolled in a timely and stable manner according to production needs. At present, there are various structures of this device. Bearings are often used to connect the barrel and the fixed shaft. Resistance is applied to one side of the barrel, and the roll is manually fixed. It is troublesome to install and fix the material, the resistance adjustment range is small, and it is easy to jump during work. The unwinding is unstable, the constant tension of the material cannot ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of the existing material unwinding fixed shaft, such as troublesome material replacement, unstable unwinding, and inability to maintain constant tension, the present invention provides a wedge-type unwinding material shaft with an improved structure for the production line of disposable sanitary products

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