Yarn length control device and control method in flat knitting machine
A control device and technology of flat knitting machines, applied to flat knitting machines with individual moving needles, weft knitting, textiles and papermaking, etc., which can solve problems such as different sizes, coil lengths out of target, and easily disordered lengths of knitted fabrics, etc., to achieve Disorder prevention effect
Active Publication Date: 2015-01-28
SHIMA SEIKI MFG LTD
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Problems solved by technology
The quality style of braids tends to vary if their looping triangle correction values are updated each time
However, if the stitch triangle correction value is not updated, the stitch length will deviate from the target, and the length of the knitted fabric will easily become disordered.
In addition, if four base machines are used for double reverse weaving, the front lower base and the rear upper base are used to weave the double reverse weave of the front knit, and the rear lower base and the front upper base are used to weave the double reverse of the back knit For weave knitting, since the optimal stitch triangle correction value is different in the upper and lower bases, the stitch sizes in the front stitch course and the back stitch course are different, sometimes causing streaks
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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[0035] exist Figure 1 to Figure 8 Examples and modifications thereof are shown in . figure 1 , figure 2 The structure of the flatbed knitting machine 2 is shown, and the flatbed knitting machine 2 is provided with four needle beds of a lower front needle bed df and a lower rear needle bed dr, an upper front needle bed uf and an upper rear needle bed ur. Alternatively, it may be a flat knitting machine including two needle beds consisting only of the lower needle beds df and dr. A rail 4 is provided on the upper portion of the needle beds df to ur, and a plurality of yarn supply ports 6 move along the rail 4 to supply yarns to unillustrated needles of the needle beds df to ur. In addition, the carriage c moves on the needle beds df to ur to operate the needles of the needle beds. g is a needle groove gap, which is a place where the needles of the needle beds df to ur form stitches. The front and rear of the flat knitting machine 2 are as follows: figure 1 As defined above,...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Stitch cams (9, 10) of each needle bed, in a flat knitting machine (2) provided with at least a pair of front and rear needle beds are controlled in accordance with a stitch cam correction value, and the stitch cam correction value is updated in accordance with a difference between loop length of stitches formed in the flat knitting machine (2) and a target value of loop length of the stitches. Setting is made as to whether to update the stitch cam correction value by a common change amount for each needle bed, or to update the stitch cam correction value by a dissimilar change amount varied depending on the needle bed, and the stitch cam correction value of each needle bed is updated according to the setting.
Description
technical field [0001] The present invention relates to yarn length control in flat knitting machines. Background technique [0002] Flat knitting machines generally have two needle beds, front and rear, but there are also flat knitting machines with a total of four needle beds, front, rear, upper and lower. The measured value of the consumed yarn length is compared with the target value, in other words, the loop length of the actual loop is compared with the target value of the loop length, and the correction value of the stitch triangle is fed back so that the size of the knitted fabric knitted by the flat knitting machine is not disturbed. It is well known (Patent Document 1: Japanese JP3085638B). Furthermore, in Patent Document 1, the consumed yarn length is measured by a rotary encoder or the like, and the stitch triangle correction value is updated according to the difference from the target value. The knitting cam is the cam of the carriage of the flat knitting mach...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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IPC IPC(8): D04B15/82D04B15/36
CPCD04B15/362D04B7/045
Inventor 中口一人岛崎宜纪小村善幸
Owner SHIMA SEIKI MFG LTD