SU1416416A1 - Winding shaft - Google Patents

Abstract

The invention relates to the processing of flexible long materials, mainly yarns, and solves the problem of increasing the reliability of the winding shafts of textile machines. The winding shaft contains a spindle 1 mounted in two bearings 2 with a groove in the inter-support part. At one end of the spindle, a pulley 5 is fixed to communicate the rotation of the spindle, and at the other end a working member 6 is fixed, for example a bobbin holder, a friction cylinder, etc. An elastic sleeve 10 is installed in the inter-support part of the spindle, one end of the sleeve contacts the movable sleeve 12. The pressure nut 13 provides axial movement of the sleeve 12 and compression of the elastic sleeve 10, as a result of which the stiffness of the sleeve changes and, accordingly, the spindle natural oscillation frequency. Such adjustment avoids shaft operation in the resonant zone. The axial tension of the bearings is provided by a pressure nut 14, regardless of the axial compression of the elastic sleeve 10, which ensures an increase in the service life of the bearings. 1 il. i SP

Description

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The invention of the use of flexible long-length materials, predominantly yarns, relates to the design of the winding shafts, i.e. friction cylinders, bobbin holders, disk shafts, and so on, which operate the winding, twisting and other mechanisms.

The purpose of the invention is to increase the reliability of operation by separately adjusting the stiffness of the elastic sleeve and axial clamping of bearings.

The drawing shows the winding shaft, axial section.

The proposed winding shaft. contains spindle 1, installed by means of rolling bearings 2 in the seat of body 3, mounted in the nest of bed 4 ,, One end of the spindle is equipped with a pulley 5 to communicate it to your side, and the other to work part 1-1 of which 6 from the purpose of the winding shaft o The bearings with their outer rings are fixed between the sleeve 7 rigidly fixed in the housing (or a collar on the inner surface of the housing) and the nut-cap 8 °. An elastic sleeve 9 is installed between the outer rings of the bearings. The current of the spindle to the bearings is provided with a groove made out of a smooth line. This section of the spindle is enclosed by an elastic sleeve 10, the shape of the inner surface of which corresponds to the shape of the hole on the spindle. / w by means of a rigid sleeve 51, the other end of the elastic sleeve interacts with a pressure device that includes a movable sleeve 12. mounted with an axis}} 5th displacement along the spindles and the supply hydrochloric push nut 13 .i kontrga.ykoyo .On sleeve bearing 2 mounted with the possibility of axial displacement therealong zogo and locking nut 14. The resilient sleeve 10 on the spindle and resilient sleeve 9 on the housing can be porous and impregnated. grease, and their surfaces 15, facing one another, are sealed for the entire length except for the sections adjacent to the ends

In the process, the working body 6 mounted on the spindle receives

rotation from pulley 5 belt drive,. At the same time, the spindle rotates in the bearings 2. The suppression of the vibrations arising in the process is ensured by the interaction of the elastic sleeve 10 with the spindle 1, the Elastic sleeve 10 during the operation of the winding shaft simultaneously performs the role of changing the frequency of its natural vibrations, means of blanking supplying lubricant to bearings if it is made porous; Changing the natural frequency of the shaft is based on a change in the stiffness of the spindle due to axial compression of an elastic sleeve. Axial compression The bushings are reached by the fact that it rests on one end of the inner fixed bearing, while the other interacts with the end of the movable sleeve 2. Rotating the nut 13 with the lock nut moves the sleeve 12 along the spindle, squeezing the elastic sleeve to the required amount. bearing 2, a new bearing on the bushing sleeve 12, is reached by a pushing nut 14. By tightening the said nut and moving the inner ring of the bearing ;, create the required tension g in the bearing, t e e tension in the bearing and axial compression of the elastic sleeve about Provided independently of each other due to the operation of various structural elements.

The proposed design of the device makes it possible to adjust the natural frequency of the shaft, avoiding work in the resonant zone, and regardless of the compression of the elastic sleeve, the axial tension of bearings can be mo. It can be provided with an optimal solution. This solution allows to increase the service life of the bearings.

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A reel shaft containing a spindle with a groove in the inter bearing, mounted on two rolling bearings, one of which is mounted for axial displacement g covering the spindle s of the inter core support elastic sleeve, one end of which is in contact with the sliding bearing, and means for axial compression of the elastic sleeve, including pod314J6A16

the vise sleeve mounted on the spindle hub contacts with the end of the case, and the pressure nut, about the lt, with the free end of the elastic hub, and due to the fact that, for the purpose of the inner cage of the movable bearing- mounted on a movable sleeve.

Claims (1)

Claim A winding shaft comprising a spindle with a groove in the inter-bearing part, mounted on two rolling bearings, one of which is mounted with the possibility of axial movement _{and an} elastic sleeve covering the spindle in the inter-bearing part, one end of which is in contact with the stationary bearing, and means for axial compression of the elastic sleeve, including a movable sleeve mounted on the spindle and a pressure nut, characterized in that, in order to increase the reliability of operation, the movable sleeve contacts the elastic sleeve with its end face and, and the inner race of the movable bearing 5 is mounted on the movable sleeve "