JP4507793B2 - Diagonal weaving loom - Google Patents

Description

  The present invention relates to a diagonal weaving loom.

  The oblique weaving loom weaves an oblique woven fabric in which warp and weft intersect at an acute angle. One of the conventional oblique weaving looms includes an input roller, an intermediate roller, and an output roller (reference numerals 24 and 25 in Patent Document 1) indicating the feeding direction of a warp sheet composed of a plurality of warp yarns from the warp beam of the feeding device to the pre-weaving. , 26), it is also known to turn obliquely with respect to the ridge (Patent Document 1, FIG. 3). This oblique weaving loom was arranged so that the axis of the warp beam was parallel before weaving.

  In addition, the oblique weaving loom described in FIG. 1 of Patent Document 2 is arranged so that the sending direction of the warp sheet sent out from the warp beam is not turned and before the weaving is formed at an acute angle with respect to the warp. linked.

  In the oblique weaving loom described in Patent Document 3, the warp beam is arranged so that the axis of the warp beam intersects the axis of the winding beam at an acute angle. A warp sheet composed of a plurality of warps from the warp beam to the weaving is turned by a turning guide roller (reference numeral 25 in Patent Document 3).

  However, in the oblique weaving loom described in Patent Document 1, since the warp sheet is not wound at right angles to the intermediate roller and the output roller, the warp sheet in the range wound around the intermediate roller is one side. The warp sheet may come off the intermediate roller. Further, the warp tension is not stable over the entire woven width.

  In the oblique weaving loom shown in FIG. 1 of Patent Document 2, the warp length from the warp beam to the pre-weaving at one of the weaving ends is significantly different from that before the weaving operation. In addition, even if the tension of each warp is adjusted so as to obtain a uniform tension, the warp tension decreases according to the length of the warp during weaving. As a result, the loom will weave the woven fabric with the warp sheet provided with non-uniform tension, and warps are likely to occur in the woven fabric.

  Also in the oblique weaving loom described in Patent Document 3, the warp sheet may be caught by one of the turning guide rollers having an axis that intersects the warp beam axis at an acute angle, and the warp sheet may come off the turning guide roller. . Further, since this oblique weaving loom changes the direction of the warp sheet on the way, it becomes difficult to control the warp tension over the entire weaving width.

Japanese Patent Publication No. 48-31951 Japanese Patent Publication No. 51-28748 Japanese Patent Laid-Open No. 63-196738

  An object of the present invention is to apply a uniform tension to a warp sheet composed of a plurality of warp yarns in an oblique weaving loom and prevent the occurrence of fabric defects.

The oblique weaving loom according to the present invention includes a warp beam provided parallel to the axis of the take-up roll, a ridge provided so as to extend in an acute angle with the axis of the warp beam, and the take-up roll A tension roll that is provided in parallel to the axis of the warp and applies tension to the warp sheet between the warp beam and the heel, and a guide roll that is provided in parallel to the axis of the warp beam. In an oblique weaving machine for weaving a woven fabric by crossing a weft and a warp at an acute angle, the warp sheet pulled out from the warp beam is divided into a plurality of sections in the width direction of the warp sheet, and at least one of the sections The warp sheet is guided to the tension roll through the guide roll, and the guide roll is configured to transfer the warp sheet in the section corresponding to the guide roll from the warp beam to the tension roll with respect to the warp sheet in the other section. The length of the warp sheet in the corresponding section from the warp beam to the heel is different from the length of the warp sheet in the other section from the warp beam to the heel. It is arranged to reduce.

A plurality of the guide rolls may be arranged around the warp beam at intervals in the circumferential direction of the warp beam .

  One of the plurality of guide rolls is arranged so that one of the divided warp sheets can be guided to another one of the guide rolls, and another one of the guide rolls May send out one of the warp sheets and another one of the warp sheets side by side in the axial direction of the warp beam.

  Furthermore, a drive device that rotates the guide roll may be included.

  According to the oblique weaving loom according to the present invention, in each section divided by the guide roll, different lengths are provided via the guide roll so as to reduce the difference in length of each warp sheet from the warp beam to the heel. Since the warp sheets are sent out through the path, the variation in the lengths of the plurality of warp sheets from the warp beam to the kite, that is, the warp length, is small. Therefore, by adjusting the tension of each warp so that the tension is uniform before the start of operation of the loom, uniform tension can be applied to a plurality of warp sheets composed of a plurality of warps during weaving. According to the length of the warp, the warp tension is hardly reduced. As a result, the loom can weave the woven fabric with the warp sheet provided with a substantially uniform tension, and warps are less likely to occur in the woven fabric.

  Since the guide roller is arranged so that these axes are parallel to the axis of the warp beam, the warp sheet is wound at right angles to the guide roller, and the warp wound around the guide roller. The sheet is maintained in the center of the guide roller, and warp is less likely to be caused by one of the guide rollers. Further, since the direction of the warp sheet is not changed midway, tension control for the warp is also simplified.

  The oblique weaving loom may further include a driving device that rotates the guide roll. By doing so, the warp sheet can be sent out actively.

  Referring to FIGS. 1 and 2, the warp delivery device 10 includes a warp beam 14 around which a plurality of warps 12 are wound, a driving device 16 that rotates the warp beam 14, and an axis 18 of the warp beam 14. In addition, four guide rolls 20a, 20b, 20c, and 20d disposed at intervals around the warp beam 14 are included. The distance R between the axis of the guide rolls 20a, 20b, 20c, 20d and the axis 18 of the warp beam 14 is equal.

  The warp beam 14 includes a rod-shaped core portion 22 and a pair of flanges 24. The pair of flanges 24 are assembled at right angles to the axis 18 of the warp beam 14. The interval between the pair of flanges 24 is W.

  A plurality of warp yarns 12 are wound around the warp beam 14. A plurality of warps 12 are wound around a warp beam 14 to form a donut-shaped hollow cylinder a having a vertical cross-sectional radius of r.

The warp beam 14 is rotated by a driving device 16 and includes a plurality of warps 12 . The warp sheet 26 is divided into four sections by the four guide rolls 20a, 20b, 20c, and 20d, and the four warp sheets 26a, 26b, 26c, and 26d are sent out in each section.

  The distance L1 between the guide roll 20a and the guide roll 20b, the distance L2 between the guide roll 20b and the guide roll 20c, and the distance L3 between the guide roll 20c and the guide roll 20d are equal to each other. Is arranged. For this reason, the length of the longest warp of each warp sheet can be made equal only by making the width dimensions of the warp sheets equal.

  The guide rolls 20a, 20b, 20c, and 20d are all longer than the core portion 22 of the warp beam 14 in detail. The lengths of the guide rolls 20a, 20b, 20c, and 20d are the same. Both ends of each guide roll 20 a, 20 b, 20 c, 20 d are located outside the core portion 22 on the axis 18 of the warp beam 14. By doing so, each guide roll is made common, and the warp feeding device can be made inexpensive.

  The guide roll 20a is pulled out from the position P1 of the hollow cylinder a so as to guide the warp sheet 26a to the guide roll 20a and in contact with the outer periphery of the hollow cylinder a.

  The guide roll 20a is arranged so that the warp sheet 26a can be guided to the guide roll 20b.

  The guide roll 20b is pulled out from the position P2 of the hollow cylinder a so as to guide the warp sheet 26b to the guide roll 20b and to be in contact with the outer periphery of the hollow cylinder a.

  Further, the guide roll 20b is arranged so that the warp sheet 26a and the warp sheet 26b are aligned in the direction of the axis 18 of the warp beam 14 to be one warp sheet 26e wider than either of the warp sheets 26a and 26b. And it arrange | positions so that the warp sheet | seat 26e can be guide | induced to the guide roll 20c.

  The guide roll 20c is pulled out from the position P3 of the hollow cylinder a so as to guide the warp sheet 26c to the guide roll 20c and in contact with the outer periphery of the hollow cylinder a.

  Further, the guide roll 20c is arranged so that the warp sheet 26e and the warp sheet 26c are aligned in the direction of the axis 18 of the warp beam 14 to be one warp sheet 26f having a width wider than any of the warp sheets 26e and 26c. And it arrange | positions so that the warp sheet | seat 26f can be guide | induced to the guide roll 20d.

  The guide roll 20d is pulled out from the position P4 of the hollow cylinder a so as to guide the warp sheet 26d to the guide roll 20d and in contact with the outer periphery of the hollow cylinder a.

  Further, the guide roll 20d has a warp sheet 26f and a warp sheet 26d arranged in the direction of the axis 18 of the warp beam 14 so as to be one warp sheet 26 wider than both the warp sheets 26f and 26d. And it arrange | positions so that the warp sheet | seat 26 can be guide | induced to the tension roll 28. FIG.

  Here, the width dimension of the warp sheet 26e is equal to the sum of the width dimension of the warp sheet 26a and the width dimension of the warp sheet 26b. The width dimension of the warp sheet 26f is equal to the sum of the width dimension of the warp sheet 26e and the width dimension of the warp sheet 26c. The width dimension of the warp sheet 26 is equal to the sum of the width dimension of the warp sheet 26f and the width dimension of the warp sheet 26d. The width dimension of the warp sheet 26 is substantially equal to the distance dimension W between the pair of flanges 24 of the warp beam 14.

  Since the distance R between the guide rolls 20a, 20b, 20c, 20d and the axis 18 is the same, the distance between the position P1 and the guide roll 20a, the distance between the position P2 and the guide roll 20b, and the position P3 The distance between the guide roll 20c and the distance between the position P4 and the guide roll 20d are equal.

  Therefore, the distance from the position P1 of the warp sheet 26a wound around the guide roll 20b to the guide roll 20b through the guide roll 20a is larger than the distance from the position P2 of the warp sheet 26b to the guide roll 20b. It is larger by the distance L1 between the guide roll 20b.

  The distance from the position P2 of the warp sheet 26b wound around the guide roll 20c to the guide roll 20c through the guide roll 20b is greater than the distance from the position P3 of the warp sheet 26c to the guide roll 20c. It is larger by the distance L2 between the guide roll 20c.

  The distance from the position P3 of the warp sheet 26c wound around the guide roll 20d to the guide roll 20d through the guide roll 20c is larger than the distance from the position P4 of the warp sheet 26d to the guide roll 20d. It is larger by an interval L3 between 20d.

  That is, the warp sheet 26 composed of the warp sheets 26a, 26b, 26c, and 26d includes a plurality of warp yarns 12 having different length dimensions from the positions P1, P2, P3, and P4 drawn from the hollow cylinder a to the guide roll 20d. . In other words, the average warp length from the position drawn from one hollow cylinder of the plurality of warp sheets to the guide roll 20d is the average length from the position drawn from another hollow cylinder of the plurality of warp sheets to the guide roll 20d. The warp length can be increased by an interval between one of the plurality of guide rolls and another one. By doing so, as will be described later, in each of the sections, the lengths of the warp sheets 26a, 26b, 26c, and 26d from the warp beam 14 to the heel 42 are further made equal to each other so as to reduce the difference in length. Then, the warp sheet 26 is fed out through different length paths through the guide rolls 20a, 20b, 20c, and 20d.

  The tension roll 28 is assembled to a frame (not shown) of the warp feeding device 10 so that the axis of the tension roll 28 and the axis 18 of the warp beam 14 are parallel to each other. The tension roll 28 rotates around the axis of the tension roll 28 according to the feeding of the warp sheet 26 and applies tension to the warp sheet 26.

  The guide rolls 20a, 20b, 20c and 20d are rotated in the same direction around these axes by the drive device 30 for guide rolls in synchronization with the drive device 16.

  Specifically, the drive device 30 includes a timing pulley 32 assembled to the output shaft of the drive device 30, a timing pulley 34 assembled to one end of each of the rotation shafts of the guide rolls 20a, 20b, 20c and 20d, It includes a belt tension applying timing pulley 36 and a timing belt 38 that is stretched in a state where tension is applied to the plurality of timing pulleys 32, 34, 36. The plurality of timing pulleys 32, 34, and 36 may be driven by the drive device 16 via a transmission.

  The pitch circle diameters of the plurality of timing pulleys 32, 34, and 36 are made equal. Thereby, the sending speed of the warp sheets 26a, 26b, 26c, and 26d sent out by the guide rolls 20a, 20b, 20c, and 20d can be made constant.

  Referring to FIG. 3, the oblique weaving loom 40 includes a warp feeding device 10 and a hook 42 that intersects the axis 18 of the warp beam 14 at an acute angle. The heel 42 extends in a direction of 30 ° with respect to the direction of the warp 12.

  The warp sheet 26 pulled out from the tension roll 28 of the warp feeding device 10 is woven before 46 through a plurality of reed frames 44 intersecting with the direction of the warp 12 at 30 °, and reeds 42 swinging in the direction of the warp 12. Connected to.

  The scissors 42 are beaten on the weft 46 (not shown) parallel to the weaving 46, that is, wefted in a direction where the crossing angle θ with respect to the warp 12 is 30 °, and weave the woven fabric 48.

  The woven fabric 48 woven is wound in a roll shape around a winding roll 52 via a press roll 50 and a clothing roll (not shown).

  The guide rolls 20a, 20b, 20c, and 20d are spaced in the width direction of the warp sheet 26 by the intervals w1, w2, and w3 of the warp sheets 26 in each section, and the corresponding guide rolls 20a, 20b, 20c, and 20d. They are arranged so that the dimensional relationship with L1, L2, and L3 is L = w × tan θ, and in this embodiment, L = w × tan 30 °. When the intersection angle θ is 45 °, the dimensions of the interval w and the interval L are equal. The distances w1, w2, and w3 and the distances L1, L2, and L3 may be different values as long as the relationship of L = w × tan θ is satisfied.

  In other words, the guide roll 20b has the length LL1 of the warp 12 having the longest length from the guide roll 20a to the heel 42 out of the warp 12 in the warp sheet 26a and the guide roll 20b in the warp 12 in the warp sheet 26b. The warp yarns 42 are arranged so that the length LL2 of the longest warp yarn 12 is equal to the length of the heel 42.

  The guide roll 20c includes the length LL2 of the warp 12 having the longest length from the guide roll 20b to the heel 42 among the warps 12 in the warp sheet 26b, and the guide roll 20c to the heel 42 among the warps 12 in the warp sheet 26c. Is arranged so that the length LL3 of the longest warp 12 is equal.

  The guide roll 20d includes the length LL3 of the warp 12 having the longest length from the guide roll 20c to the heel 42 among the warps 12 in the warp sheet 26c, and the guide roll 20d to the heel 42 among the warps 12 in the warp sheet 26d. Is arranged so that the length LL4 of the warp 12 having the longest length becomes equal.

  Moreover, although the warp sending apparatus 10 was demonstrated as including four guide rolls, it is not limited to this, The number of guide rolls should just be two or more.

  In the above embodiment, the guide roll is associated with each section of the warp sheet, but it is not always necessary to associate the guide roll with each section. For example, when the warp sheet is divided into two sections, only one guide roll may be used.

  Specifically, the warp sheet of one section is pulled out through the guide roll and guided to the tension roll, and the warp sheet of the other section is guided to the tension roll without passing through the guide roll, for example, through the lower side of the guide roll. Also good.

  The present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

1 is a schematic front view of a warp feeding device according to the present invention. FIG. 2 is a schematic side view of the warp feeding device shown in FIG. 1. 1 is a schematic top view of an oblique weaving loom according to the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Warp sending device 12 Warp 14 Warp beam 16 Drive device 18 Warp beam axis 20a, 20b, 20c, 20d Guide roll 22 Core part 24 Flange 26, 26a, 26b, 26c, 26d, 26e, 26f Warp yarn sheet 28 Tension roll 30 Drive device 32 Timing pulley 34 Timing pulley 36 Timing pulley for applying belt tension 38 Timing belt 40 Oblique weaving machine 42 ４４ 44 綜 絖 Frame 46 Before weaving 48 Weaving fabric 50 Press roll 52 Winding roll

Claims (4)

A warp beam provided parallel to the axis of the winding roll;
A ridge provided so as to extend in a direction intersecting an acute angle with the axis of the warp beam;
A tension roll that is provided parallel to the axis of the take-up roll and applies tension between the warp beam and the heel to the warp sheet;
In the oblique loom for weaving the woven fabric by crossing the weft and the warp at an acute angle, including a guide roll provided parallel to the axis of the warp beam,
The warp sheet pulled out from the warp beam is divided into a plurality of sections in the width direction of the warp sheet,
The warp sheet in at least one of the sections is guided to the tension roll through the guide roll,
The guide roll guides a warp sheet in a section corresponding to the guide roll to a warp sheet in another section through different length paths from the warp beam to the tension roll, and the corresponding section. An oblique weaving loom arranged so as to reduce a difference between a length from the warp beam to the heel of the warp sheet and a length from the warp beam to the heel of the warp sheet in another section.   The oblique weaving loom according to claim 1, wherein a plurality of the guide rolls are arranged around the warp beam at intervals in a circumferential direction of the warp beam. One of the plurality of guide rolls is arranged so that one of the divided warp sheets can be guided to another one of the guide rolls,
3. The oblique weaving loom according to claim 1, wherein another one of the guide rolls sends out one of the warp sheets and another one of the warp sheets side by side in the axial direction of the warp beam.   Furthermore, the diagonal weaving loom of any one of Claim 1 to 3 containing the drive device which rotates the said guide roll.

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