Howa Machinery, Ltd.

Howa Kogyo Kabushiki Kaisha

Kanehiro Ito

Shinji Kato

Yoshio Kawasaki

Yoshio Kurachi

Takashi Kogiso

Tatsutake Horibe

Hirotaka Nishikawa

Kunio Shinkai

Kazuo Yamada

Koichi Yamada

Shunji Ito

Sadao Ukai

A bobbin exchange system applied to a ring spinning frame provided with a unique creel mechanism, wherein a pair of parallel rails is provided for supporting respective bobbin carriages. Each bobbin carriage is provided with two alignments of bobbin hangers, to a number which is identical to a number of spindles of each side of the ring spinning frame. When roving bobbins supported by the bobbin carriage supported by one of the above-mentioned supporting rails reach an almost exhausted condition, a roving bobbin exchange operation between full packaged roving bobbins suspended by the corresponding bobbin hangers of the other bobbin carriage supported by another supporting rail is carried out, and upon completion of the above-mentioned roving bobbin exchange operation, the first-mentioned bobbin carriage is discharged from the first-mentioned supporting rail and then a fresh bobbin carriage supporting full packaged roving bobbins is introduced into the first-mentioned supporting rail by means of a conventional bobbin carriage transporting system. The above-mentioned roving bobbin exchange operation is repeated between the above-mentioned two supporting rails without stopping the spinning operation.

Sytem for exchanging roving bobbins applied to a ring spinning frame

An apparatus for controlling a drive of each one of spinning frames forming a group, to which a conventional roving bobbin exchange operation for exchanging almost exhausted roving bobbins of the spinning frame with full packaged roving bobbins of a bobbin carrier on a supply rail arranged at a position close to and above the corresponding spinning frame by a known automatic apparatus mounted on a carrier which is capable of displacing along a track arranged on a floor of a spinning factory along an alignment of out-end frames of said spinning frames, is applied, wherein during the spinning operation, a residual roving quantity of the roving bobbins of each spinning frame is measured, while detecting a quantity of yarn wound on cops in each spinning frame, and when the above-mentioned measurement of a residual quantity of roving bobbins reaches a predetermined value, a first signal indicating this condition is issued, while the quantity of yarn wound on the cops is measured to detect a suitable condition to start the above-mentioned roving bobbin exchange operation, and when this suitable condition is detected, a second signal indicating this condition is outputted, then a signal calling the automatic apparatus is outputted based upon the logical product of these two signals, and an allowable time for the arrival of the automatic apparatus at a working position close to a particular position and close to the out-end frame of a spinning frame is set, and if the automatic apparatus for exchanging roving bobbins does not arrive at the above-mentioned working position within the allowable time, the drive of the spinning frame concerned is stopped by a means for controlling the drive of the spinning frames which cooperates with the measurement of a residual quantity of a roving bobbin and measurement of a quantity of yarn wound on the cops.

Apparatus for controlling operation of spinning frame in roving bobbin

A method for transporting articles in a system for transferring such articles between different machines provided on different floors of a building, wherein a predetermined number of articles are taken from a machine, the articles being hung in rows on a carrying unit moving along a guide rail, taking the articles to a lift, storing the articles in the lift while the articles are still hanging on the carrying unit, transferring the articles to another floor, withdrawing the articles from the lift while still hanging on the carrying unit, moving the carrying unit on a guide rail, and taking the articles to another machine by moving the carrying unit along the guide rail.

Method and apparatus for transporting articles

A method and apparatus for switching the relative position between roving bobbins held by bobbin hangers of a front row and the roving bobbins held by the rear row in a spinning frame. The roving bobbin exchange operation is carried out as successive unit operations from one end-side of the spinning frame to the other end-side thereof. In each unit operation, first the axial distance between a bobbin hanger of the front row and a bobbin hanger of the rear row, which are positioned adjacently in the lengthwise direction of the spinning frame, is reduced to a predetermined distance, then the relative position of those two bobbin hangers is reversely changed while maintaining the reduced axial distance. Thereafter, the axial distance between those two bobbin hangers is returned to the initial condition for carrying out the spinning operation. The roving bobbin exchange operation can be carried out during the normal spinning operation, when the roving bobbins held by either one of the bobbin hangers of the front row and the rear row become substantially exhausted.

Method and apparatus for switching roving bobbins in a spinning frame

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Aichi, Japan

Kanehiro Ito