Paper crumpling machine

Abstract

The invention discloses a paper crumpling machine and relates to the technical field of transfer printing. The paper crumpling machine comprises a frame, a paper feed roll, a paper shrinkage roll pair, a crumpling roll pair and a transmission device. The paper shrinkage roll pair comprises an upper roll shaft, a lower roll shaft and a plurality of rollers, wherein the rollers are fixed on each roll shaft at intervals, and the rollers of the two roll shafts are staggered. The crumpling roll pair comprises an upper crumpling roll and a lower crumpling roll, wherein the upper crumpling roll is provided with a bush-shaped surface, and the lower crumpling roll is provided with a convex and concave surface. The paper crumpling machine has the advantages that when transfer printing paper passes the paper shrinkage roll pair, the paper is pressed and pulled to deform by the staggered rollers, and the transfer printing paper is allowed to generate transverse shrinkage. When the transfer printing paper with transverse shrinkage passes the crumpling roll pair, the longitudinal and transverse shrinkage of the transfer printing paper can be generated under the extrusion of the brush-shaped surface and the convex and concave surface of the upper and lower crumpling rolls, and crumples are formed on the surface of the transfer printing paper. The pre-stretching quantity of the transfer printing paper is provided by the crumples on the surface of the transfer printing paper during convex-concave pattern transfer printing, paper breakage during transfer printing can be avoided, product quality is guaranteed, and economical benefits of enterprises are increased.

Description

Technical field: [0001] The invention relates to transfer printing technology, mainly relates to a paper crumpling machine for crumpling transfer printing paper before transfer printing, which belongs to supporting equipment of transfer printing machine. Background technique: [0002] Transfer printing is generally used for flat printing. A new technology equipment that can carry out transfer printing on the surface of non-planar substrates has been patented and put into practice, changing the past history of not being able to transfer printing on the surface of non-planar substrates. The principle of transfer printing is that transfer printing paper is spread on the surface of the substrate with a concave-convex pattern structure, and then a mold with a complementary shape that matches the concave-convex pattern on the surface of the substrate is placed on the transfer printing paper, and then heat transfer is carried out by a special transfer printing machine. Transfer pr...

AI Technical Summary

Problems solved by technology

[0003] However, this method still has deficiencies, that is, if the concave-convex pattern on the surface of the substrate is darker (debossed pattern) or higher (convex pattern), when the transfer printing paper is spread on it and the mold is covered for heat transfer printing , the flat transfer printing paper at the concave-convex pattern will be stretched by the top of the concave-convex pattern, and in severe cases, the top of the transfer printing paper will be stretched and broken, resulting in unqualified printed products and defective products, reducing the economic benefits of the enterprise

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