Automatic roll changing and continuous laminating equipment of flexographic printing machine

Abstract

The invention relates to automatic roll changing and continuous laminating equipment of a flexographic printing machine. The automatic roll changing and continuous laminating equipment comprises a rack, a laminating assembly and an automatic roll changing part, the film coating assembly comprises a fixing plate, a film coating assembly body and a conveying roller. The automatic roll changing partcomprises a supporting frame, a mounting frame, a roll changing assembly, a film changing assembly and a control mechanism; and according to the equipment, a new protective film on one unwinding roller is pasted to the tail portion of a protective film on the other unwinding roller which is being unwound through the film replacing assembly to achieve automatic roll replacing of the protective film, and the positions of the two unwinding rollers obtained after film replacing are exchanged through the roller replacing assembly to prepare for next film replacing. The equipment is ingenious in mechanism design, the automatic roll changing device is extremely high in automation degree, the film covering efficiency and quality are improved, automatic roll changing of the protective film is achieved through the film changing assembly, and therefore the film covering continuity in the flexographic printing process is kept.

Description

technical field [0001] The invention relates to the field of film coating, in particular to a continuous film coating equipment with automatic roll change for a flexo printing machine. Background technique [0002] Flexo printing is a direct printing method. It is called flexographic printing because of the use of elastic, raised image printing plates. The printing plate of the flexographic printing plate is fixed on the printing plate cylinder. Roller ink supply; In the process of flexo printing, in order to protect the surface of the flexo printing product, it is necessary to cover the surface of the flexo printing product. The protective film is pasted on the cardboard after flexo printing through the laminating device, and the protective film is passed through unwinding The roller is unwinding and conveying. When the protective film on the unwinding roller is used up, it needs to be replaced. However, flexo printing and lamination are an integral working process, so if a...

AI Technical Summary

Problems solved by technology

[0002] Flexo printing is a direct printing method. It is called flexographic printing because of the use of elastic, raised image printing plates. The printing plate of the flexographic printing plate is fixed on the printing plate cylinder. Roller ink supply; In the process of flexo printing, in order to protect the surface of the flexo printing product, it is necessary to cover the surface of the flexo printing product. The protective film is pasted on the cardboard after flexo printing through the laminating device, and the protective film is passed through unwinding The roller is unwinding and conveying. When the protective film on the unwinding roller is used up, it needs to be replaced. However, flexo printing and lamination are an integral working process, so if a new protective film needs to be replaced, the machine must be shut down for operation. , This will waste the working time of the equipment and reduce the work efficiency. If the replacement is not stopped due to the difference in manual operation speed and quality, it will cause a large section of flexo-printed cardboard to not be coated, resulting in waste or cardboard coated Unevenness causes the problem of degradation of film quality

[0003] Chinese patent application number is CN201120018461.3 The thermal laminating mechanism of the flexo printing machine includes a frame, and a hot pressing roller and a working pressing roller installed on the frame, the hot pressing roller and the working pressing roller are arranged side by side and It is formed to rotate relative to each other. There is an accommodating groove arranged in the axial direction inside the heat press roller, and a heating tube is arranged in the accommodating groove. The power supply input terminal on the heating tube is electrically connected to the external power supply. Laminating step, but the structure of the equipment is complex and inconvenient to maintain, and the equipment cannot realize the automatic film change of the protective film, and it needs to be operated by workers, which will reduce the efficiency of lamination

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