Analyze the principle of computerized flat knitting machine


The knitting flat knitting machine is a double needle tongue knitting weft knitting machine. Its triangular device is like a set of plane cams. The needles of the knitting needle can enter the groove of the cam, and move the triangle to force the knitting needle in the needle groove of the needle plate. Regularly lifting and moving, and through the action of the needle hook and the tongue, the yarn can be woven into a knitted fabric. During the ascending process, the coil gradually withdraws from the needle hook, opens the needle tongue, and hangs the needle tongue. On the needle bar; during the lowering process, the needle hook hooks the newly placed yarn, and pulls it into a coil, while the original coil is pulled out of the needle hook, and the new coil passes through the old coil. 4. In series with the old coil, a plurality of woven knit stitches are connected to each other to form a knitted fabric.

 

1, the process of looping

 

The process of knitting the yarn into a fabric by the knitting needle of the flat knitting machine is called a loop forming process, and the loop forming process can be divided into 8 loops, back yarn, yarn, yarn, closed loop, ferrule, loop, loop and pull. stage.

 

(1) Retreat

 

Rewinding is to move the old coil in the needle hook to the needle bar to prepare for the new yarn. During the rewinding process, the knitting needle rises from the lowest point to the highest point, and the knitting needle is in the retreat stage. After the loop is closed, the needle is scraped off by the coil.

 

(2) mat yarn

 

The gauze is to put the yarn on the tongue. After the retraction is completed, the knitting needle begins to descend. Due to the matching action of the yarn feeding mechanism, the yarn is guided by the yarn guide and placed on the needle hook through the yarn feeder. Underneath, the top of the tongue, so that the needle can reliably hook the yarn when the needle continues to descend.

 

(3) yarn

 

The yarn is the process of placing the yarn under the needle hook into the needle hook. This process is done by the fabric falling.

 

(4) Closed

 

Close the mouth to close the needle so that the old stitch of the new pad is separated by the needle. After the process without the yarn, the yarn is properly hooked by the needle, the needle continues to fall, and falls on the needle bar. The old coil slides along the needle bar to the needle and moves to the underside of the tongue. The tongue starts to rotate around the needle shaft due to the action of the old coil. When the needle is lowered again, the needle rotates to cover the needle to close the needle.

 

(5) ferrule

 

The ferrule process begins with the old coil sleeve on the closed tongue, and the trailing edge closes the needle and moves to the needle hook to end.

 

(6) Stripping

 

The detachment is the process in which the coil is detached from the needle. When the ferrule is completed, the needle is lowered along the triangular working surface, and the newly placed yarn is caught through the old coil, and the old coil is simultaneously pulled by the pulling force. Take off from the needle.

 

(7) Looping

 

In the looping stage, after the old coil is pulled out of the needle, the needle hooks the new mated yarn through the old coil, and the needle is then lowered to bend the yarn into a new coil.

 

(8) Pulling

 

Pulling is to tighten the new coil after the looping, and the needle hook must not be pulled out to carry out the looping work of the next row weaving. Pulling is to pull the old coil to the back of the needle by the pulling mechanism to achieve the purpose of tension. At the same time, the formed fabric is taken out into the loop area.

 

2, the circle process

 

The tuck is one of the basic coil structures of the knitted fabric. It is a kind of tissue formed by the old coil not being retracted or unraveled, and the knitting needle continues to be looped, and the old and new coils are gathered together.

 

In the flat knitting machine, two methods are used to obtain the tuck organization, one is no off-loop method, and the other is no-retraction method.

 

(1) No looping method

 

The loop-free method is to push the two needles of the flat knitting machine or the two front and rear diagonals to a certain height. When the head drives the triangle, the knitting needle rises to the highest point, and then descends to the closed stage. When the coil is closed, the needle is hung on the needle bar, and the needle hooks the new padded yarn. When the machine head is reversely running to weave the next row of fabric, the needle can rise to the triangle The apex, or descending to the lowest point, the new yarn forms a cantilevered arc and then merges with the old coil hung on the needle bar to form a tuck.

 

(2) No loopback method

 

The tuck formed by the non-retracting method is also called the fat flower tissue, and can only be woven on the fat flower flat knitting machine. The two-level fat flower flat knitting machine forms a parallel collecting circle, and the three-level fat flower flat knitting machine can form a staggered collecting circle.

 

Parallel laps: The second-level fat flower flat knitting machine has an active needle-triangular triangle. The needle-needle plate is arranged with a high-pin and a low-needle. When the machine head is running, the needle-pin triangle exits the low-pin height, and the high-pin can be used. Being pushed by the needle, it will continue to rise to the back circle, and the low needle can only rise to the top of the needle triangle, and the plane of the crossbar triangle will travel, then descend, and the coil will open on the tongue and then hang on the tongue. The needle hook also hooks the newly laid yarn. When the machine head weaves the next row of fabric, the exiting needle triangle returns to the original position, the old coil and the newly formed yarn hanging on the low needle tongue The cantilever arcs together to retreat, and the circle is formed to form a lap. Because the lap is formed only on the low-needle, the woven tuck tissue is arranged parallel to each other on the piece, so it is called a parallel lap or a secondary fat flower.

 

Interlaced laps: There are two needle-trigger triangles for the three-level fat flower flat knitting machine. The high-needle needles, low-foot needles and high-foot long tongue needles are arranged on the needle board. When the lower needle triangles are together to exit the low needle height , weaving parallel ferrule organization. When the upper needle triangle is separately exiting the working position, the knitting needle rises to the lower needle triangle position, because the long tongue needle tongue is long, the coil opens the needle tongue and hangs on the needle tongue and does not retire. After the gauze, the new and old coils are brought together to form a lap. Therefore, the tuck is formed on the low-needle and the long-needle, and the woven tuck tissue is staggered on the piece, so it is called a staggered circle. Cross-point mesh fat flower and third-grade fat flower.

White Microfiber Fabric

Brushed Poly Fabric,Grey Polyester Fabric,Polyester Plain Fabric,White Microfiber Fabric

CHANGXING YONGXIN IMPORT AND EXPORT CO.,LTD , https://www.cxyxfabric.com

Posted on