A die-cutting device

Abstract

The invention discloses a die cutting device, and relates to the fields of printing and packaging. The die cutting device comprises a rack, a die cutting barrel, a rolling knife and an adjusting mechanism, and further comprises a pneumatic control shaft rotatably connected with the rack, wherein guide rails and gear racks parallel to the guide rails are arranged on the rack; the die cutting barrel is connected to the rails in a sliding manner; mounting holes which penetrate through the side wall of the die cutting barrel in the radial direction of the die cutting barrel are formed in the die cutting barrel; the rolling knife and the adjusting mechanism are mounted in the mounting holes; the die cutting barrel is arranged outside the pneumatic control shaft in a sleeving manner; an air inlet channel and a plurality of air cavities formed in the radial direction of the pneumatic control shaft are formed in the pneumatic control shaft; one ends of the air cavities communicate with the air inlet channel; pressure reducing valves are arranged at communication parts of the air cavities and the air inlet channel; transmission gears which mesh with the gear racks are fixed to the end part of the pneumatic control shaft; the adjusting mechanism comprises a cylinder body, an ejector pin arranged in the cylinder body, and a spring arranged outside the ejector pin in a sleeving manner; one end of the cylinder body communicates with the air cavities; the ejector pin can slide along an inner cavity of the cylinder body; and one end of the ejector pin is fixed to the rolling knife. According to the device, cutting length for a packaging material can be changed.

Description

technical field [0001] The invention relates to the fields of printing and packaging, in particular to a die-cutting device. Background technique [0002] As the main equipment for realizing die-cutting and creasing, die-cutting machine plays an irreplaceable and important role in the packaging and printing industries. In the manufacturing process of the packaging bag, it is necessary to cut the packaging material to be made into the packaging bag first, and after cutting, the packaging material can be folded to form a packaging bag. Therefore, when cutting the packaging material, it is necessary to cut the packaging material into sections, that is, it is necessary to reserve a folding part of the packaging material. [0003] The existing cutting method for packaging materials is mainly to use a roller for cutting. The roller is provided with an arc-shaped cutter. The arc length of the cutter is less than the circumference of the roller. The arc length of the cutter is the ...

AI Technical Summary

Problems solved by technology

For different cutting requirements, it is necessary to replace the rollers to achieve different incision lengths. Therefore, it is necessary to design several sets of rollers according to the needs of the product, which will increase the production cost, and the replacement of the rollers will also reduce the production efficiency.

Images