摘要:
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.
摘要:
In a textile machine provided with a doffing and donning apparatus utilizing a conveyor 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 conveyor belt when the conveyor belt is driven before starting the donning operation. When the conveyor 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.
摘要:
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.
摘要:
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.
摘要:
A yarn piecing method in an open-end spinning machine comprises stopping a yarn piecing machine in front of a spinning unit suffering a yarn breakage, reversing a package with a rewinding roller to rewind a yarn therefrom, cutting off the yarn to provide a yarn end having a predetermined length, moving the yarn end to a position upwardly of an outlet of a withdrawal tube in the spinning unit, reversing the rewinding roller again to feed the yarn end through the withdrawal tube to a fiber collecting surface of a spinning rotor in the spinning unit, supplying a sliver with a feed roller into the spinning unit, piecing the yarn end to the sliver on the fiber collecting surface, continuously drawing a pieced yarn from the spinning rotor, and moving the pieced yarn to a position between a presser roller and a draw-off roller which are being rotated while drawing the pieced yarn from the spinning rotor. The presser roller and the draw-off roller are mounted on the open-end spinning machine and adjustable in speed dependent on the yarn number count used for yarn winding operation during a yarn piecing process.
摘要:
Method and apparatus for yarn piecing in a ringless spinning machine is provided, according to which yarn piecing is accomplished by unwinding a yarn from its package, rewinding a portion of the unwound yarn on to the package at one, definite position, cutting off the yarn end to a predetermined length, then introducing the cut end of the yarn into the spinning mechanism of the spinning unit, and then withdrawing the yarn from the spinning unit after the yarn end is connected with the fibers in the spinning mechanism.
摘要:
A bobbin transporting system are overhead transporting rail for the flyer frames and an overhead transporting rail for spinning machines are disposed independent of each other. The bobbin transporting carrier running on the transporting rail for the flyer frames suspends the bobbin hangers at a pitch equal to that of bobbin wheels of the flyer frame arrayed in one of two rows in which the bobbin wheels are disposed in a zigzag pattern. The bobbin transporting carrier running on the transporting rail for the spinning frames suspends bobbin hangers at a pitch equal to that of reserve roving bobbins disposed at both sides of a spinning machine. A bobbin exchanging apparatus is disposed at a location where both the transporting rails extend in parallel and close to each other. In the bobbin exchanging apparatus, bobbins suspended at different pitches from the respective bobbin transporting carriers travelling on the transporting rails in opposite directions, respectively, are exchanged.
摘要:
A method of transferring yarn packages in a spinning frame having a plurality of spinning stations arranged in a row on each longitudinal side thereof, a single run of a full package transferring conveyor disposed centrally along the machine and a doffing unit moveable along the respective spinning stations, is disclosed herein. According to a preferred embodiment of the invention, the movement of the conveyor, which is set normally in a moving state, is interrupted only if there is no doffed package on the conveyor at a doffing position corresponding to a spinning station when the doffing unit traveling around the machine comes to and stops at that spinning station, whereupon the doffing unit is operated to perform its doffing service there; but the conveyor continues to run if there is any doffed package at that doffing position, until that position becomes clear of any such package, and doffing service is provided at the station when its doffing position on the conveyor is thus cleared of any other package.
摘要:
A method and apparatus for supplying operational fluid to a traveling-type working machine, such as a yarn piecer or an auto-doffer, which serves a parent machine, such as a spinning frame. The working machine utilized in the present invention has a secondary fluid tank and at least one nozzle attached to an air cylinder. Prior to the working machine serving the parent machine, the nozzle is advanced by an air cylinder, operated by fluid supplied from the secondary fluid tank, so that it engages with one of the air intakes provided on the parent machine. Then operational fluid is introduced from a primary fluid source into the working machine through the engaged nozzle and air intake, and thereby the working machine carries out a specific operation for the parent machine. Simultaneously, the operational fluid is distributed to the secondary fluid tank in preparation for the next engagement of the nozzle and the air intake. According to the present invention, the working machine is free from the burden of a heavy and voluminous air compressor and a troublesome long connecting hose.
摘要:
A bobbin holding device for holding at least one bobbin includes a hollow body having a bobbin receiving opening and connected at a base portion thereof to a doffing bar of a bobbin doffing and donning apparatus, a bobbin holding member disposed in the body and movable radially relative to the bobbin receiving opening between a projected position and a retracted position, and a flexible diaphragm disposed in the body in fluid tight relation with respect to the bobbin holding member for applying a fluid pressure on the bobbin holding member to move the same into the projected position. The bobbin holding device further includes a block member disposed between the flexible diaphragm and the doffing bar, the block member being formed with a fluid passage(s) to supply a pressurized fluid to the diaphragm without passing it through the doffing bar.