Automatic film changing device of film wrapping machine

Abstract

The invention discloses an automatic film changing device for a film wrapping machine, which comprises: a film heat-sealing knife is arranged in a frame, a film pressure seat is arranged above the film heat-sealing knife, and the film pressure seat is driven close to the film-bonding cylinder Or away from the film heat-sealing knife, two film roll racks with film rolls are arranged on the frame on the side of the film heat-sealing knife, and a detection alarm is set between each film roll rack and the film heat-sealing knife Mechanism, when the film of the film roll on the film roll placement rack passes between the film heat sealing knife and the film press seat and enters the film wrapping machine, the film head of the film roll on the other film roll placement rack is also at the film heat Between the sealing knife and the film pressure seat; when the detection and alarm mechanism corresponding to the film roll being used by traction detects that the film roll is completely used up, the film connecting cylinder will cooperate with the film heat-sealing knife to place it between the film heat-sealing knife and the The two films between the film press seats are bonded together by heat and pressure. The invention has the advantages of simple structure and high film utilization rate.

Description

technical field [0001] The invention relates to the field of beverage packaging, in particular to an automatic film changing device for a film wrapping machine. Background technique [0002] Film wrapping machine is currently a commonly used equipment for packaging cigarettes, beverage bottles and other products with film. With the continuous improvement of film wrapping machine packaging speed, the film changing time is greatly shortened and the film changing frequency is also increased. The currently used automatic membrane changing device of the film packaging machine, such as figure 1 As shown, it includes a film roll roll set composed of a first roll set 2 equipped with a first film roll 1 and a second roll set 4 equipped with a second film roll 3, the first roll set 2 and the second roll set 4 It is distributed parallel to the front and rear along the film feeding direction, and also includes the film pulling roller group 6 that can clamp and pull the film in the film...

AI Technical Summary

Problems solved by technology

[0005] The disadvantages of the above-mentioned automatic membrane changing device of the film charter machine are: (1) Two sets of film clamping mechanisms, two sets of film cutting mechanisms and one set of film sealing mechanism are required to cooperate to complete the film changing operation. The structure is complex, the operation is cumbersome, and the work efficiency is low; (2) The phenomenon of film waste is serious, that is, the length of the waste film on the replaced film roll can reach more than ten meters, and the film utilization rate is low, which increases the production and use cost of the enterprise

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