Shima Seiki Mfg., Ltd.

Shima Seiki Manufacturing Limited

Masaki Miyamoto

Masahiro Shima

Toshiaki Morita

Minoru Sonomura

Yoshinori Shimasaki

Takuya Miyai

Hiroshi Maeda

Masahiro Koudai

A yarn feeder includes a switching mechanism which presets a swing direction of the yarn feeding port after completion of a yarn feeding operation, and, after having completed a yarn feeding operation, changes over the swing of the yarn feeding port from one yarn feeding position to another standby position interlocking with the released selective operation of an entraining device, in which the switching mechanism includes a feeder rod having a yarn feeding port at its lower end, which is composed of at least two members, both of the members being arranged to relatively slide each other in a vertical direction and provided with a push-up member to force upward respectively. The switching mechanism includes a support member for bearing the yarn feeding rod being provided with a regulation unit for regulating the upward movement of the yarn feeding port in the determined standby position, wherein the rise of the yarn feeding port in the standby position is limited below the determined altitude by using the regulation unit.

Yarn feeder of yarn feeding device for weft knitting machine

There are provided a movable sinker apparatus of a weft knitting machine and a sinker which are capable of holding and pressing down a knitting yarn of a previous loop and sufficiently pulling down a knitting fabric. At forward positions of the sinkers, second protruding portions are close to each other, and thus a knitting fabric can be sandwiched therebetween. When the front and rear needle beds are faced each other so as to be symmetric at the needle bed gap, the forces of the wire springs are applied so as to pull down the knitting fabric in the vertical direction. A knitting yarn receiving portion is formed on a first protruding portion of the front end portion on the sinker, and thus it is possible to retain a knitting yarn of a previous loop and prevent the knitting yarn from moving as the knitting needle moves forward. the second protruding portion that projects outward in a radial direction is formed on a portion close to a front end of the first protruding portion, and the knitting fabric can be sandwiched and pulled down by the second protruding portions provided on the needle beds that are opposed to each other.

Movable sinker apparatus and sinker of weft knitting machine

On each of carriages are disposed a group of transfer cams and a group of receiving cams. A leftward movement of the carriages makes it possible to transfer a knitted loop from a front needle bed provided with one carnage to a rear needle bed provided with another carriage. A rightward movement of the carriages makes it possible to transfer the knitted loop from the rear needle bed provided with the other carriage to the front needle bed provided with one carriage. The transferring can be freely carried out between the needle beds, and it is possible to temporarily place a knitted loop from one needle bed to another needle bed and keep a holding, and further retain the knitted loop separately from a fabric being knitted on the other needle bed and when needed, return the knitted loop from the other needle bed to the one needle bed.

Cam apparatus for knitting fabric

A needle selecting apparatus for a weft knitting machine capable of performing a needle selecting position locking function without moving a selecting jack forward and backward is provided. In the needle selecting apparatus, an initial position of the selecting jack is set at a welt position to ready for non-operation. And when a butt is pressed by a B presser of a carriage, the selecting jack comes into a locked condition by a locking member. The selecting jack is sunk into a needle groove in the locked condition and the butt of a knitting needle is also sunk into the needle groove to separate from a knitting cam. When a knitting position or tucking position is selected by a needle selection actuator, a selector is driven by a selector cam, and a tip of the selecting jack presses a contact portion of the selecting jack to move the selecting jack rightward. During the movement, the locking member is drawn to release the locked condition.

Needle selection device for weft knitting machine

A stitch cam for setting the density of a knit by drawing in a knitting needle holding yarn fed from a yarn feeder is adjustably provided on a carriage. The stitch cam and the yarn guide member are connected by a linking device such that when the stitch cam moves to a knit-forming side, the movable yarn guide member moves in a direction to advance to a side of a gap portion between the mouth portions, and when the stitch cam moves to a stitch-cam-intermitting side, the movable yarn guide member moves in a direction to be retreated from the gap portion between the mouth portions to a needle bed side.

Weft knitting machine with movable yarn guide member

A weft knitting machine having a movable sinker capable of securing a large space at a needle bed near a knitting fabric knitting area and making a pause in the state of stopping action on the knitting fabric knitting area. A sinker operating cam mechanism () installed in a carriage acts on the butt () of a sinker jack () to move the sinker jack () backward from a mouth part () so that the acting part () of the movable sinker () can retract from the mouth part (). The sinker jack () is locked to a moved back position by a locking mechanism (). Since a wire () passed through a needle plate () is utilized to lock the sinker jack () in the locking mechanism (), the locking mechanism () can be reduced in size. To lock the sinker jack () to the wire (), the sinker jack () comprises a projection ().

Weft knitting machine having movable sinker

A switching mechanism is provided for switching the position of a yarn feeding mouth to another and swinging a yarn feeder. The switching mechanism includes a push operating portion for changing a swing direction of the yarn feeding mouth and a height position thereof in cooperation with a leading means until a yarn feeder selected by the leading means feeds a yarn and is led from a stopped state. The push operating portion forms a lowering surface in a surface of the push operating portion. The lowering surface is used to further lower the yarn feeding mouth from a yarn feeding position so as to allow the yarn to pass under a backface side of the needle.

Yarn feeder of weft knitting machine and method of feeding yarn for weft knitting machine

A break in twice as many yarns is made detectable merely by slightly modifying the tension switch assembly of a knitting machine. A yarn conductor 20 is rotatably attached to the forward end of an arm 16 of the assembly and provided with a pair of yarn supports 26, 27 on opposite sides of a rotational pin 19. Upon a break occurring in the yarn 2 retained on one of the yarns supports 26, 27, torques exerted by the yarns 2, 2 on the respective supports 26, 27 are brought out of balance to rotate the yarn conductor 20 and release the remaining other yarn 2 from the support 27.

Tension switch assembly and yarn conductor of knitting machine

A stitch increasing needle operating cam for a flat knitting machine having stitch increasing function. The needle operating cam for operating needle bodies and sliders of compound needles separately from each other, in which in relation to a lowering face of a needle body lowering cam of a loop delivering side cam, a slider lowering face for lowering a slider at a timing earlier than that by the lowering face of the needle body lowering cam is provided.

Stitch increasing for flat knitting machines

A sinker mechanism for a flat knitting machine having at least one front needle bed and one rear needle bed, is provided with a row of sinker assemblies, each sinker assembly having a needle plate, a swingable sinker next to a front region of the needle plate, and a yarn guide sheet fixedly mounted to a needle bed, the swingable sinker having at front end a yarn holding portion, the yarn guide sheet having at front end a yarn guide edge, and when the swingable sinker turns forward with its yarn holding portion moving down, the yarn guide edge of the yarn guide sheet comes above the yarn holding portion of the swingable sinker and projects outwardly of the front end of the sinker towards an intermediate position between the front ends of the opposite needle beds.

Sinker mechanism for flat knitting machines

A stitch increasing method and a needle operating cam for a flat knitting machine having stitch increasing function. The needle operating cam for operating needle bodies and sliders of compound needles separately from each other, in which in relation to a lowering face of a needle body lowering cam of a loop delivering side cam, a slider lowering face for lowering a slider at a timing earlier than that by the lowering face of the needle body lowering cam is provided.

Growing community of inventors

Wakayama, Japan

Masaki Miyamoto