Intermittent delivery device and method of film

Abstract

PROBLEM TO BE SOLVED: To enhance a film conveying speed without increasing the size of a motor. SOLUTION: A film intermittent conveying device includes a delivery device 20 for delivering a film 12 and a winding device 30 for winding up the film. The delivery device 20 includes a film delivery mechanism 22 and a delivery accumulation mechanism 23 for accumulating the film and discharging the film at a time. The winding device 30 includes a winding accumulation mechanism 33 for accumulating the discharged amount of film at a time when discharged, and a film winding mechanism 32 for winding up the film constantly at a specified rate. An intermittent conveying method includes the steps of repeatedly performing the accumulation and discharge of the film delivered constantly at a specified rate by the delivery accumulation mechanism 23, accumulating the discharged amount of film by the winding accumulation mechanism 33 upon discharging, and discharging the accumulated film constantly at a specified rate before being discharged next time by the delivery accumulation mechanism 23 and winding up the film by the film winding mechanism 32.

Description

technical field [0001] The invention relates to a film intermittent conveying device for intermittently conveying long films and a film intermittent conveying method. Background technique [0002] In industries such as printing, the following operations are carried out: After transporting the film to be printed, temporarily stopping it, performing predetermined printing on the stationary film, transporting it again, then making it still, and again Print on still film. In such a case where predetermined processing such as printing is repeatedly performed on a film, there is known a device that intermittently transports the film at constant intervals. Also, as a device for intermittently conveying films in this way, there has been known an intermittent film conveying device including a lead-out side and a take-up side (for example, refer to Patent Document 1), wherein the lead-out side is used to lead out a predetermined amount of film. The take-up side is set away from the ...

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Problems solved by technology

Also, in order to increase the conveying speed of the film, it is necessary to rapidly repeat its rotation and stop by the motor, but due to the weight of leading out the film roll and winding the film roll, a large inertia is generated, so even if the driving force is extremely large The huge motor has a certain limit to the rapid acceleration and deceleration when it rotates, so there is a limit to improving the conveying speed of the intermittently conveyed film

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