Sheet-feeding device and sheet-feeding method

Abstract

In this invention, a first shaft control unit (82A) controls the rotational operation of a first supporting shaft (11) that supports a first roll (R1), in such a manner that a sheet is fed at a predetermined conveyance speed from the first roll (R1). A second shaft control unit (82B) performs first rotational control that adjusts the rotational speed of a second supporting shaft (12) that supportsa second roll (R2) in such a manner that the circumferential speed of the second roll (R2) matches the conveyance speed of the sheet on the first roll (R1). Moreover, the second shaft control unit (82B) performs a correction to accelerate or decelerate the rotational velocity of the second supporting shaft (12) in such a manner that an adhesive member (H) on the outer peripheral surface of the second roller (R2) reaches a pressing position (Tp) when the target connection position (Tr) of the sheet on the first roll (R1) reaches the pressing position (Tp).

Description

technical field [0001] The present invention relates to a sheet supply device and a sheet supply method for continuously supplying the sheet from a material roll wound with the sheet. Background technique [0002] Conventionally, there is known a sheet supply device that sequentially feeds and feeds sheets from a first roll and a second roll on which sheets are wound (for example, refer to Patent Document 1). This type of sheet feeding device is provided with a connecting mechanism, and when the remaining amount of sheets of the first material roll (supply-side material roll) in the feeding state of feeding sheets is less than or equal to a predetermined remaining amount, the connecting mechanism will not supply sheets. The sheet body of the second material roll (standby side material roll) in the standby state is connected to the sheet body of the first material roll. [0003] When the remaining amount of sheets wound on the first material roll is less than the specified r...

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to set aside the maximum supply amount to output the command signal, resulting in a large amount of surplus all the time, which is very wasteful

That is to say, the conventional sheet supply device has a problem that when the sheets are connected via an adhesive member, it is difficult for the remaining amount of the sheet to be wound on the first roll to be a fixed target remaining amount of winding.

Images