A strip material micro-distance stretching device and stretching machine

Abstract

The invention provides a belting microspur stretching device. The belting microspur stretching device can shorten the stretching deformation distance to 2mm-3mm and comprises a first roller body, a second roller body and a substrate, wherein the first roller body comprises a plurality of roller sections which are mutually separated, and a line shared by the roller sections of the first roller bodyis called as the first roller axis; the second roller body comprises a plurality of roller sections which are mutually separated, and a line shared by the roller sections of the second roller body iscalled as the second roller axis; the first roller axis and the second roller axis are not collinear; and the roller sections of the first roller body and the roller sections of the second roller body are mutually staggered and are arranged at intervals. The belting microspur stretching device can continuously perform microspur stretching production, has a uniform and continuous stretching effect, does not magnify defects on an original film and can greatly reduce the transverse shrinkage mass of belting. The invention also provides a stretcher which is provided with the belting microspur stretching device. The microspur stretching can be achieved and the belting deformation can be avoided.

Description

technical field [0001] The invention relates to a macro-distance stretching device, in particular to a device for continuous macro-distance stretching based on the principle of differential speed; the invention also relates to a stretching machine equipped with a macro-distance stretching device. Background technique [0002] Thin sheet materials such as film, paper, cloth, and metal sheet need to be stretched in a specific production process. For example, when making a breathable film, it is necessary to stretch the original film so that breathable micropores appear on the original film. [0003] There are two existing methods for stretching thin sheet materials, one is the segmental stamping stretching method, and the other is the differential speed continuous stretching method. The segmental stamping and stretching method is to place a piece of sheet material or a section of a roll of sheet material on a mold, and use the mold to further thin the sheet material. The dif...

AI Technical Summary

Problems solved by technology

[0004] The length of the stretching deformation distance is related to the quality of the product: the longer the stretching deformation distance, the more serious the tiny defects on the original sheet material will be magnified, and even lead to waste products, and the stretching deformation distance The longer, the higher the width shrinkage of the sheet material, so that it is difficult to control the width of the strip after processing

Therefore, it is generally more desirable that the stretching deformation distance is as short as possible, but the width of the strip can reach 400mm to 1200mm, so the diameters of the rollers of the front and rear clamping roller groups cannot be very small, otherwise the rollers The rigidity is not enough, because the diameter of the roller cannot be made too small, so under the structure of the existing stretching machine, the stretching deformation distance can not be small

Images