Apparatus for sizing a yarn sheet
AssigneeTsudakoma Kogyo Kabushiki Kaisha
InventorTokuji Komatsu
Life of this patent
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Abstract
Sizing of a yarn sheet is practiced without direct immersion into a size bath through running pressure contact of same with a rotary sizing roller while the process is so automatically controlled that, at starting of the sizing operation, the drive for running of the yarn sheet starts after all the related working elements are registered at their operative positions and, at stopping of the operation, the elements are released from the registered operative positions after the yarn sheet has come to a complete stop.
Claims12
Apparatus for sizing a yarn sheet comprising, in combination, a rotary feed roller of said yarn sheet a size bath, a rotary sizing roller partly immersed in said size bath, first means for placing said yarn sheet in pressure contact with said sizing roller in the area not immersed in said size bath, a rotary squeeze roller for forming a nip for said yarn sheet in cooperation with a bottom roller, second means for placing said squeeze roller in pressure contact with said bottom roller, a drive motor mechanically coupled to said feed, sizing and bottom rollers, means for simultaneously actuating operations of said first and second placing means, and an automatic control device electrically coupled to said drive motor and said actuating means and provided with stopping and starting switches, said control device comprising means operating immediately in response to actuation of said starting switch for operating said actuating means, and for initiating the operation of said drive motor following a predetermined time after actuation of said starting switch and for removing power from said drive motor immediately upon actuation of said stopping switch and for reversing the operation of said actuating means following a second predetermined time after actuation of said stopping switch, said second predetermined time being sufficient to insure that inertia running of said yarn sheet has come to a complete stop.
Dependencies are inferred from the claim text.