Tensioning device

Abstract

The invention discloses a tensioning device. A sliding block of the tensioning device is provided with a slope with the inclination angle being adjustable. A guiding column is provided with a guiding part which extends out of a guiding sleeve and travels on the slope, so that the slope forces the guiding part to drive the guiding column to move vertically, and a tensioning wheel is driven to move. An equivalent elastic coefficient of a spring is changed by changing the inclination angle of the slope, thus, different tension ranges, namely the high range or the low range, are provided, and the defect that the spring fails and consequently the elastic coefficient is influenced can be overcome by adjusting the inclination angle; and changes of tensile caused by pressure changes between transmission rollers are adjusted through an adjusting mechanism, so that the tensile is basically kept constant.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a tensioning device. Background technique [0002] In the field of textile technology, when the cloth is sorted into rolls, the cloth is generally conveyed on multiple pairs of drive rollers arranged at intervals. Specifically, the cloth is clamped between a pair of driving rollers, so that a certain frictional force is generated between the cloth and the driving rollers, so that the cloth is conveyed by the driving rollers. In order to make the cloth have a certain tension during the conveying process so that the cloth has a certain density after being rolled, usually, a tensioning mechanism is arranged between the two pairs of driving rollers, and the tensioning mechanism causes the cloth to generate a certain tension. [0003] In the prior art, the tensioning mechanism for tensioning the cloth includes a tensioning wheel for abutting against the cloth and for pushing against...

AI Technical Summary

Problems solved by technology

A more prominent disadvantage of this structure is that due to the repeated use of the spring, the spring will fail due to fatigue, so that its elastic coefficient will decrease, and eventually it will not be able to provide enough tension for the cloth, which will affect the density of the cloth after it is rolled.

[0004] In addition, the above-mentioned tensioning mechanism cannot provide stable tension for the cloth, because the friction force generated between the cloth and the drive roller is unstable (when the pressure between a pair of drive rollers increases, the friction between the cloth and the drive roller The friction force generated will increase, when the pressure between a pair of drive rollers decreases, or the drive roller is severely worn, the friction force generated between the cloth and the drive roller will decrease), and the size of the friction force will also increase Affects the tension of the cloth, for example, when the friction force decreases, the cloth begins to relax, so that the tension wheel starts to move toward the cloth, and the spring compression becomes smaller, so that the tension becomes smaller; conversely, when the friction force increases , so that the cloth starts to be tensioned, so that the tensioning wheel starts to move away from the cloth, and the compression degree of the spring increases, so that the tension increases

Unstable tension will also affect the density of the cloth after it is rolled

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