Kabushiki Kaisha Toyoda Jidoshokki Seisakusho

Hideo Tamai

Takayuki Morita

Ikuo Komura

Masanao Kobayakawa

A cutting blade of a device for cutting a yarn in a textile machine such as a spinning frame, rewinding machine, weaving machine. The cutting blade is provided with a main body and a sharp cutting edge formed on a periphery portion thereof by an etching process.

Cutting blade of a device for cutting a yarn in a textile machine

A bobbin doffing and donning method in a spinning machine including a conveyor for conveying the empty and full bobbins along the machine, and a succession of bobbin holders for holding and transferring the bobbins between the spindles on the machine and the conveyor. The empty bobbins are removed from the conveyor by grasping the upper end of an empty bobbin by a holder and moving the holder upwardly. The holder is then moved to position the empty bobbin above a corresponding full bobbin on a spindle with the empty bobbin in axial alignment with the full bobbin. The empty bobbin is released from the holder and the lower end abuts against the upper end of the full bobbin. The holder is moved down along the empty bobbin until it reaches the junction between the empty and full bobbins and then grasps both the empty and full bobbins simultaneously. The holder holding the empty and full bobbins is then moved up and then away from the spindle and then downwardly to adjacent the conveyor and only the full bobbin is placed on the conveyor. The holder is moved upwardly along the empty bobbin and grasps the upper end, and the empty bobbin is then moved above the spindle and placed on the spindle.

Method and apparatus for doffing and donning bobbins in spinning machine

In a textile machine provided with a doffing and donning apparatus utilizing a conveyer belt for temporarily supporting full size yarn packages doffed from the textile machine and carrying the yarn packages outside the textile machine and for temporarily supporting fresh bobbins supplied from a fresh bobbin supply device mounted on an outend frame of the textile machine, a method and device for transferring fresh bobbins from the bobbin supply device to the respective pegs of the conveyer belt when the conveyer belt is driven before starting the donning operation. When the conveyer belt is driven so as to pick up the fresh bobbins by the respective pegs, each peg is inserted into the bottom bore of the corresponding fresh bobbin in such a way that the head of the peg approaches the bottom bore of the fresh bobbin along a passage inclined to a plane along which the fresh bobbins are supported.

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Kariya, Japan

Hideo Tamai