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- Nachgewiesen in: USPTO Patent Applications
- Sprachen: English
- Document Number: 20240158964
- Publication Date: May 16, 2024
- Appl. No: 18/422133
- Application Filed: January 25, 2024
- Claim: 1. A tension adjustment method of a yarn feeding device, wherein the yarn feeding device is applied, and the yarn feeding device comprises warp beams (1), connecting rod frames (2), a guide bar (6), a looping mechanism and a drawing and rolling-up mechanism, wherein the connecting rod frames (2) are connected to yarn winding wheels (3) and yarn guide plates (4), yarns (14) are wound on the warp beams (1), and the yarn winding wheels (3) are positioned between the warp beams (1) and the guide bar (6); each of the yarn winding wheels (3) comprises a yarn inlet (301), a yarn winding shaft (303) and a yarn outlet (304), and a tension sensor is installed on the yarn winding shaft (303); yarn guide holes (41) are reserved in the yarn guide plates (4); the warp beams (1) rotate to send out the yarns (14), and the yarns (14) are wound on the yarn winding shafts (303) in a plurality of turns after being fed into the yarn inlets (301) of the yarn winding wheels (3), and are led out from the yarn outlets (304) for passing through the yarn guide holes (41) in the yarn guide plates (4); the yarn guide holes (41) are configured to separate all the yarns (14) so as to allow the yarns (14) not to be intertwined with each other; each of the yarn winding wheels (3) further comprises a dust cover (302) and a central processing chip, wherein the dust cover (302) is located at an outer side of the corresponding yarn winding shaft (303); the tension sensors are installed at lower ends of shaft walls of the yarn winding shafts (303), and the yarn winding shafts (303) and the tension sensors are both in data connection with the central processing chips; the tension sensors are configured to detect tension fluctuations in a yarn feeding process and transmit the detected data to the central processing chips; the central processing chips control the yarn winding shafts (303) to rotate clockwise or counterclockwise according to the detected data so as to adjust the tension on the yarns (14) in the yarn feeding process; and the tension adjustment method of the yarn feeding device comprises the following steps: when the tension on the yarns (14) is uniform without abnormality, the yarns (14) are wound into the yarn winding wheels (3) in a certain number of turns in advance, the warp beams (1) feed the yarns, and the yarn winding wheels (3) synchronously lead out the yarns (14) at a constant speed; the tension sensors are installed within an area (100) at the lower ends of the shaft walls of the yarn winding shafts (303); before knitting without yarn feeding, tension reset buttons (200) located at side ends of the connecting rod frames (2) are pressed, and then the tension detection values of the tension sensors are calibrated to 0; when the tension on the yarns (14) becomes uneven during machine weaving, the yarns (14) wound on the yarn winding shafts (303) will cause axial compression or relaxation on the shaft walls of the yarn winding shafts (303), so that the tension values measured by the tension sensors positioned within the bottom end area of the yarn winding shafts (303) is increased to positive values or decreased to negative values; when it is detected that the tension on the yarns (14) is too high, the yarns (14) produce axial pressure on the yarn winding shafts (303), the tension sensors detect the tension, and the measured value is positive; subsequently, the tension sensors release yarn release command to the central processing chips inside the yarn winding wheels (3), and the central processing chips process the command and output signals to the yarn winding wheels (3); the yarn winding wheels (3) rotate counterclockwise to release the yarns (14) to make up the tension gap, and the yarns (14) wound on the yarn winding wheels (3) in advance are thus led out; at the same time, the warp beams (1) rotate synchronously to input the yarns (14) into the yarn winding wheels (3); at this time, after the tension sensors detect that the tension on the yarns (14) is normal, the output tension value is 0, and the yarn winding shafts (303) resume the normal operation of uniform yarn winding; when it is detected that the tension on the yarns (14) is too low, the axial pressure of the yarns (14) on the yarn winding shafts (303) disappears or increases in a negative trend, the tension sensors detect the tension, and the measured value is negative; subsequently, the tension sensors release yarn winding command to the central processing chips inside the yarn winding wheels (3), and the central processing chips process the command and output signals to the yarn winding wheels (3); the yarn winding wheels (3) rotate clockwise to release the yarns (14) for relieving tension fluctuations, so that the number of winding turns of the yarns (14) on the yarn winding shafts (303) is increased; and at this time, after the tension sensors detect that the tension on the yarns (14) is normal, the output tension value is 0, and the yarn winding shafts (303) resume the normal operation of uniform yarn winding.
- Claim: 2. The tension adjustment method of the yarn feeding device according to claim 1, wherein yarn guide needles are distributed on the guide bar (6), and the yarns (14) are fed into the looping mechanism by the yarn guide needles.
- Claim: 3. The tension adjustment method of the yarn feeding device according to claim 2, wherein the looping mechanism comprises knitting needles (11), a needle bed (10), a sinker (7), a sinker bed (8), and a needle core bed (9); the guide bar (6) transversely moves from left to right, so that the yarn guide needles transversely move back and forth between the knitting needles (11), complete a lapping looping movement by the knitting needles (11); and form greige cloth after loops disengage from the needles.
- Claim: 4. The tension adjustment method of the yarn feeding device according to claim 3, wherein a drawing and rolling-up mechanism comprises a drawing roller (13) and a cloth pressing roller (12); and the greige cloth produced by the looping mechanism is wound into the drawing roller (13) and pulled flat, and then cloth bulges are pressed by the cloth pressing roller (12), so as to keep a cloth surface even.
- Claim: 5. The tension adjustment method of the yarn feeding device according to claim 4, wherein tension rods (5) are provided between the yarn guide plates (4) and the guide bar (6), and the yarns (14) pass through the yarn guide holes (41) in the yarn guide plates (4) to be wound on the tension rods (5), and are then fed into the yarn guide needles at a lower end of guide bar (6).
- Claim: 6. A weaving method, wherein the tension adjustment method of the yarn feeding device according to claim 5 is applied, the weaving method comprises the following steps: S1. a fabric is composed of a plurality of courses and wales, the fabric is woven from bottom to top; at the beginning of knitting the course A, the guide bar (6) is located in the direction of backs of the needles, and thus needs to be corrected to the direction of fronts of the needles and moved to the right until moving to a right end of the selected knitting needle (11) to complete overlapping; the knitting needle (11) descends after being hooked into the yarns (14), the sinker (7) moves radially, and a needle core (15) also descends, accordingly; a needle mouth is blocked by the needle core (15), so that the yarns (14) are completely locked inside the closed knitting needle (11), and an old loop slides upward from a needle bar along the needle core (15); the yarn guide needles swing towards the backs of the needles, and the knitting needle (11) and the needle core (15) descend together to a lowest position; a new loop falls off from the knitting needle (11) and becomes another old loop, and the sinker (7) holds the newly detached old loop and pulls same in the direction opposite to the needle bed (10); S2. the weaving process of loops in each of the courses is similar to that in S1, except that the movement directions of the yarn guide needles and the stitch lengths across the backs of the needles; after the loop knitting of the course A is completed, the yarn guide needles are located at the backs of the knitting needles (11); at this time, the guide bar (6) guides the yarn guide needles to move transversely to the left by two stitch lengths for weaving the course B; S3. the loops in the course B are pulled by the yarn guide needles to allow the yarns (14) to move transversely from the backs of the knitting needles (11) that have completed the lapping looping movement in the course A to the left by two stitch lengths for arriving at a right end of the selected knitting needle (11); at this time, the guide bar (6) guides the yarn guide needles to swing to a position in front of the needles, then to move to the left for completion of overlapping of the designated knitting needle (11); subsequently, the guide bar (6) guides the yarn guide needles to move to the direction of the backs of the needles for completion of the lapping looping movement of the knitting needles (11) in the course B; S4. the loops in the course C are pulled by the yarn guide needles to move transversely from the backs of the knitting needles (11) that have completed the lapping looping movement in the course B to the right by two stitch lengths for arriving at a left end of the knitting needle (11) needing to complete the lapping looping movement, and then the guide bar (6) guides the yarn guide needles to move to the position in front of the needles, and then to move to the right for completion of overlapping of the designated knitting needle (11); subsequently, the guide bar (6) guides the yarn guide needles to move to the direction of the backs of the needles, and to stay at the right end of the knitting needle (11) that has completed the lapping looping movement for completion of the lapping looping movement of the knitting needles (11) in the course C; and S5. the weaving processes of loops in the courses D, E, F, G, H, I, J, K, L are similar to those in S3 and S4, and the stitch lengths across the backs of the needles are 3, 3, 4, 4, 2, 2, 3, 3, and 4, respectively.
- Claim: 7. The weaving method according to claim 6, wherein during the formation of the loops in the course D, the yarn guide needles move transversely from the backs of the knitting needles (11) that have completed the lapping looping movement in the course C to the left by three stitch lengths for arriving at a right end of the knitting needle (11) needing to complete the lapping looping movement in the course D; in the process of weaving from the course B to the course C, the stitch lengths across the backs of the needles are two, the stitch lengths are less than three; in the process of weaving the course D, the tension on the yarns (14) increases compared with that when weaving the course C, so that the tension become uneven; at this time, the tension values measured by the tension sensors at the lower ends of the yarn winding wheels (3) are positive, then the sensors release yarn release command to the central processing chips inside the yarn winding wheels (3), and the central processing chips process the command and output signals to the yarn winding wheels (3); the yarn winding wheels (3) rotate counterclockwise to release the yarns (14); at the same time, the tension sensors detect the real-time tension; when the measured tension value is 0, the sensors release yarn release stop command to the central processing chips, and the central processing chips process the command and output signals to the yarn winding wheels (3); and the yarn winding wheels (3) then stop rotating counterclockwise, and the tension on the yarns (14) becomes even.
- Claim: 8. The weaving method according to claim 7, wherein in the process of weaving from the course F to the course G, the backs of the knitting needles (11) that have completed the lapping looping movement in the course F move transversely to the right by four stitch lengths for arriving at a left end of the knitting needle (11) needing to complete the lapping looping movement in the course G; in the process of weaving from the course G to the course H, the stitch lengths across the backs of the needles are two, the stitch lengths are less than four; in the process of weaving the course H, the tension on the yarns (14) decreases compared with that when weaving the course G, so that the tension become uneven; at this time, the tension values measured by the tension sensors at the lower ends of the yarn winding wheels (3) are negative, then the sensors release yarn winding command to the central processing chips inside the yarn winding wheels (3), and the central processing chips process the command and output signals to the yarn winding wheels (3); the yarn winding wheels (3) rotate clockwise to release the yarns (14); at the same time, the tension sensors detect the real-time tension; when the measured tension value is 0, the sensors release yarn winding stop command to the central processing chips, and the central processing chips process the command and output signals to the yarn winding wheels (3); and the yarn winding wheels (3) then stop rotating counterclockwise, and the tension on the yarns (14) becomes even.
- Current International Class: 04; 04; 04; 04; 04
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