Axial pre-tightening and positioning structure of mechanical tensioning shaft and winding equipment

Abstract

The invention belongs to the technical field, and discloses an axial pre-tightening and positioning structure of a mechanical tensioning shaft and winding equipment. The axial pre-tightening and positioning structure of the mechanical tensioning shaft comprises a main shaft provided with a step surface, a bearing arranged on the main shaft in a sleeving manner and abutting against the step surface, a pre-tightening piece arranged on the main shaft in a sleeving mode, abutting against the end face of the bearing, in sliding connection with the main shaft, and with an external thread on the outer circumference, a driving piece provided with an internal thread matched with the external thread, and a limiting piece arranged on the main shaft and capable of limiting the driving piece, wherein rotation of the driving piece is converted into sliding of the pre-tightening piece so as to pre-tighten the bearing. Only one step surface needs to be arranged on the main shaft, threaded connection and rotation of the driving piece and the pre-tightening piece are converted into sliding to provide bearing pre-tightening force, the structure is simple and reliable, installation is convenient, thepre-tightening force is convenient to adjust, the pre-tightening force is stable and uniform, the precision and the service life of the bearing are guaranteed, the rotational inertia of the mechanicaltensioning shaft and the outer diameter of the main shaft can be effectively controlled, and the dynamic balance performance of the mechanical tensioning shaft is guaranteed.

Description

technical field [0001] The invention relates to the technical field, in particular to an axial pre-tightening and positioning structure of a mechanical tensioner shaft and winding equipment. Background technique [0002] The mechanical tensioner is the core component of winding equipment in industries such as lithium batteries, film capacitors, and textiles. The mechanical tensioner is characterized by high dynamic balance performance, small moment of inertia and steps on the shaft. , and positioning bearings require axial preload. The length of the commonly used mechanical tensioner shaft will be relatively large, and the distance between the bearings will be relatively large, so as to increase the bearing capacity of the shaft by increasing the distance between the bearings. [0003] The mechanical tensioner shaft commonly used in the prior art is mostly positioned axially through a circlip, but the circlip cannot provide pretightening force and has poor dynamic balance p...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an axial preloading and positioning structure of a mechanical tensioning shaft and a winding device to solve the problem of axial preloading and positioning of a high-speed mechanical tensioning shaft with a large distance between bearings

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