Pattern printing device of plastic product packaging bag

Abstract

The invention discloses a pattern printing device of a plastic product packaging bag. The pattern printing device of the plastic product packaging bag comprises bases. The upper end of each base is connected with a supporting transverse plate, wherein a lifting air cylinder is arranged above the supporting transverse plate; the lower end of the lifting air cylinder is connected with two parallel clamping plates; a transverse cover supporting shaft is clamped between the two clamping plates; two threaded barrels in central symmetry about a vertical straight line are arranged in the middle of the transverse cover supporting shaft; a printing upper cover is connected between the two threaded barrels; an upper cover printing surface is arranged on the lower surface of the printing upper cover;punching blocks are arranged at the two ends of the upper cover printing surface separately; the right end of the lifting air cylinder is connected with an inner baffle; the lower end of the inner baffle is connected with a supporting pillar; a lower plate printing surface is correspondingly arranged under the upper cover printing surface; and the upper end surface of the lower plate printing surface is connected with a flattening device. A buffer part inside the lower plate surface is used, and supporting occurs after pressing, so that the defects of a traditional direct cover printing is solved, and the function of double surface printing is realized.

Description

Technical field [0001] The invention relates to the technical field of printing, in particular to a pattern printing device for plastic product packaging bags. Background technique [0002] At present, there are many types of packaging bags used by people in the market, such as fresh-keeping bags and garbage bags commonly used at home, plastic bags with handles commonly used in grocery shopping, and plastic shopping bags used in supermarkets. The bags are manufactured using automated bag-making production equipment. At present, the bag-making production equipment used by manufacturers is usually divided into two production lines. The first production line is mainly composed of mixing machines, film blowing machines, sparking machines and other equipment. The bag-making raw materials (plastic rice, etc.) are formed by blow molding Ring-shaped film, and rewind to form a complete film roll to facilitate the use of the next link; the second production line is mainly composed of prin...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the shortcomings of the existing technical solutions, the present invention provides a pattern printing device for plastic product packaging bags, which not only solves the problem that the traditional printing device for plastic packaging bags directly uses stamping to achieve printing, and the lower surface is directly placed on the workbench , due to the different quality of plastic packaging bags, the problem of damage to plastic bags often occurs during stamping, and it also solves the problem that the existing printing device for plastic packaging bags does not effectively adopt the leveling device of plastic packaging bags, which sometimes leads to poor contact, resulting in Printing failure, uneven plastic packaging boxes often contain air, which will burst due to gas pressure during printing, causing a lot of economic losses. It also solves the problem that the existing plastic packaging bag printing devices mostly use roller-type coating Printing, but due to the limitations of rollers, it can only be printed on one side. Generally, exquisite packaging bags are printed on both sides, which will lead to low printing efficiency.

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