JP5363553B2 - Partial warping machine for patterned warp - Google Patents

Abstract

The sample chain wrapping machine (1) has a warping drum (2), a thread guide assembly (7) with a thread guide (6), and multiple sub bars (9). The thread guide and the warping drum are movable relative to each other in a rotation direction around the axis of the warping drum. The sub bars are positioned in different radial positions relative to the axis of the warping drum. The sub bars distributed over their length are detachably connected with two positioning drives (14) and are displaceable by the positioning drives. A sensor arrangement (22) is connected with the positioning drives.

Description

  The present invention relates to a pattern warp partial warper having a warp drum, a yarn guide device having at least one yarn guide, and a plurality of lead rods, wherein the yarn guide and the warp drum are warps. A part for a handle warp which is movable relative to each other in the rotational direction around the axis of the drum and is provided with means for guiding the yarn guided by the yarn guide to the upper or lower part of the Reeds rod at each Reeds rod Concerning warping machines.

  The partial warp for pattern warp, also called "short warp for partial warp", helps to produce warp with a limited length (warping). Is required to be maintained.

  For this purpose, a so-called warp band is wound around the circumferential surface of the warping drum. Such warp bands may have one or more juxtaposed yarns. When the desired length of warp is wound, the warp band is shifted to the side of the already wound warp band, and the winding process can be performed again. In some cases, the sequence and / or number of yarns within a single warp band can be changed during such a process.

  As described above, when a warp having a required width is warped, the warp band is cut at the beginning and end of the length. In order to enable this, as is well known, a lead rod for forming a twill at the beginning and the end of the warp is provided. Another Leeds rod can be provided for sizing division, for example.

  In order to form a yarn twill at the end of the warp, for example, the final wound layer of the warp band must be guided above the lead rod. In that case, all other winding layers of this warp band must be below the Leeds rod. As used herein, the term “upper” of the Reeds rod means that the warp band is radially outward from the Reeds rod (relative to the warping drum). In this specification, the term “downward” of the Reeds rod means that the warp band is between the warping drum and the Reeds rod.

  There are several ways to guide the yarn as appropriate. One approach is to equip the Reeds rod with a capture finger or hook that advances to grip the yarn and guide it above the Reeds rod when necessary. Another approach is to move the yarn guide for a short time parallel to the warp drum axis as it passes by the side of the Leeds rod, and the guided yarn is fed over the Leeds rod, or the yarn is axially moved. It is guided by the side of the tip of the Leeds rod so that the yarn comes under the Leeds rod during the continuous processing.

  There exists patent document 1 as this type of prior art.

JP 2008-115522 A.

  However, ensuring that the yarn reaches the desired position relative to the Leeds rod becomes increasingly difficult as the warping speed increases. If the thread should be placed above the Leeds rod, but the thread is mistakenly placed below the Leeds rod, or vice versa, the warp is normally cut at a later point in time. It becomes relatively difficult to pay out. Accordingly, there is a certain limit to the warping speed here.

  An object of the present invention is to provide a partial warper for a pattern warp that enables a high warping speed.

  The above-described problem is solved by being able to position at least one Reeds rod at a relatively different position with respect to the axis of the warping drum in the type of warp partial warper of the type pointed out at the beginning.

  In this way, it is possible to position the Reeds rod so that the position of the Reeds rod and the radial thickness of the wound yarns match each other. This is particularly applicable to a Reeds rod where the majority of the spool layer must be located below the Reeds rod. That is, the position of the Reeds rod can be adapted to the desired warp length. From the warp length, the number of winding layers indispensable for forming a desired length is known. The number of winding layers can be determined by dividing the warp length by the circumference of the warping drum. The number of wound layers multiplied by the thickness of the yarn is a measure of the radial thickness of the wound yarn. By the way, if the Reeds rod is positioned in a state where the warp drum is excessively in close contact with the warp drum and the thickness is below the thickness, sufficient space for warp cannot be used. In such a case, the wound warp bends the Leeds rod outward, so that the tip of the Leeds rod is no longer in its original position. It is thus difficult to ensure that the yarn is fed above or below the Leeds rod in the desired state. The same problem as described above occurs when the Reeds rod is too far away from the warping drum. In that case, there is certainly enough space available for the thickness of the wound yarn. However, additional space remains between the wound thread and the Leeds rod. In that case, the yarn wound up above the Reeds rod bends the Reeds rod radially inward, thus causing the same problem. On the other hand, this problem does not occur if the Reeds rod can be positioned radially relative to the warp drum axis. The Reeds rod can be positioned so that it is slightly bent or not bent at all by the wound yarn, so that the tip of the Reeds rod is always in the desired position. Therefore, a high warping speed can be realized with a lead rod positioned sufficiently accurately.

  Primarily, the Reeds rod can be displaced by a positioning drive unit. In that case, positioning of the Reeds rod can be performed by so-called remote control, and in some cases, it can be performed even during operation if it is found that the Reeds rod is not positioned at the correct position. The positioning drive unit can be simply formed as a linear drive unit. Such a positioning drive only has to allow the Reeds rod to advance or enter in the radial direction with respect to the axis of the warping drum. The radial direction does not even have to be strictly guarded when moving. In other words, the positioning drive unit does not need to act perpendicularly to the tangent line of the warping drum, and can act at a certain angle with respect to the tangent line if necessary.

  The main reason is that the Reeds rod is detachably coupled to the positioning drive unit. As an advantage of this, for example, if it is necessary when the finished warp is unwound, the Reeds rod can be slightly separated from the positioning drive.

  However, it is particularly preferred that the Reeds rod is distributed over its length and coupled with at least two positioning drives so that these positioning drives can be independently detached from the Reeds rod. . With at least two positioning drives, the Reeds rod can be firmly held at more than one point at the start of the warping process, such a Reeds rod extending exactly parallel to the axis of the warping drum, for example. This makes it easier to form warps. However, the warp is shifted in a direction away from the end face on which the yarn is placed on the warping drum as the width increases. In that case, the positioning drive unit prevents continuous warp movement. Therefore, first, the positioning drive unit can be removed from the lead rod closest to the end face on which the yarn is placed. The detachment of the positioning drive unit and the entry into the warping drum are performed immediately before the warp yarn conveyed in the direction away from the end face during sizing reaches the positioning drive unit. For this reason, removal of the positioning drive is not a problem. At this point, the Reeds rod has already been sufficiently secured by the warp.

  Mainly, a sensor device that detects the height of the wound yarn is provided, and the sensor device is configured to be connected to the positioning drive unit. In other words, the sensor device can position the lead rod by the positioning drive unit so that the position thereof fits relatively accurately with respect to the height or thickness of the wound yarn. For this reason, it is generally necessary to warp a plurality of warp bands at the beginning of the warping process. If the Leeds rod occupies the wrong position at this point, that is not a problem. However, if the formation of the wound yarn is stable, the lead rod can be moved to its correct position. When a conveyor belt having a conical support surface is arranged on the peripheral surface of the warping drum, the thickness of the wound yarn can generally be detected already after the formation of the first warp band.

  In that case, it is preferable that the positioning drive unit positions the Reeds rod at a position where the height of the wound yarn can be freely maintained below the Reeds rod, that is, a position where it can be maintained as it is. As mentioned above, this is the correct position of the Reeds rod. The Reeds rod leaves sufficient space in the radial direction and in the axial direction of the warping drum, and can accommodate all wound yarns or wound layers of warp yarns. However, the Reeds rod is not so far away from the wound yarns that the Reeds rod is bent radially inward when the yarn is wound on the Reeds rod radially outward.

  The lead rod is mainly fixed to the warping drum. In that case, a warping drum having a substantially cylindrical cross section can be used. A high warping speed can be achieved with such a warping drum.

  Preferably, the warping drum rotates during aging and the yarn guide is fixed in the rotational direction. Such a configuration also contributes to achieving a relatively high warping speed. In that case, the movement of the yarn guide can be limited to a movement exactly parallel to the axis of the warping drum. This facilitates control.

  Preferably, conveying surfaces are arranged on the circumferential surface of the warping drum, and these conveying surfaces can be displaced in a direction parallel to the axis of the warping drum by the conveying driving unit, and the conveying driving unit and the positioning driving unit are It is configured to be synchronized with each other. If the conveyance drive unit moves the conveyance surface in the direction away from the warp drum end surface on which the yarn is wound, the first positioning drive unit can be detached from the Leeds rod, and the positioning drive unit enters. be able to. An appropriate point in time when the positioning drive unit releases the warp path is automatically secured.

  In an optional configuration or an additional configuration, a warp width detection device for detecting the length of the wound yarn parallel to the warp drum can be provided, and the warp width detection device is a control connected to the positioning drive unit. It is configured to have an output end. The warp width detection device can be formed by a sensor, for example, which detects the width of the warp or only the position on the warp side opposite to the end face. Since the width of the wound warp band is known, the warp width detection device can simply be formed by a counter that detects the number of wound warp bands. When transporting the warp yarn away from the end surface on which the yarn is wound, the positioning drive must enter in a timely manner, that is, not too late or too early to release the space required by the warp. However, it can be secured in this way.

It is a perspective view which shows the schematic structure of the partial warp for pattern warps. It is the schematic of the positioning drive part of the partial warp machine for the handle warps of FIG.

  A pattern warp partial warper 1 having a schematic configuration shown in FIG. 1 includes a warp drum 2, and the warp drum 2 is coupled to a rotational drive unit 3 schematically shown. The rotation driving unit 3 can rotate the warping drum 2 in the direction of arrow 4 during winding.

  Specifically, a large number of bobbins are arranged in a bobbin creel (not shown). In this embodiment, up to 128 bobbins can be placed in the creel. The yarn is pulled out from each bobbin and passed through the yarn guide hole 5 of the yarn guide 6. All yarn guides 6 together form a yarn guide device 7.

  The yarn guide 6 is stopped in the rotational direction 4 of the warping drum 2 at the time of warping, that is, when the pattern warp is manufactured. However, the yarn guide 6 can be moved in the axial direction, that is, parallel to the axis of the warping drum 2, and specifically, the yarn guide hole 5 is guided on the warping drum 2 in the axial direction. The yarn guided by the yarn guide hole 5 is then fed onto the conveyor belt 8 that forms the conveyor surface. When the warp drum 2 is viewed from the end surface of the warp drum 2, the fed yarn is polygonal. Arranged in shape. Each radially outer portion of the conveyor belt 8 is configured to move in a direction away from the end face where the yarn guide device 7 is disposed by a conveyor drive unit (not shown). When the yarn is to be removed from the patterning process, the yarn is not fed to the circumferential surface of the warping drum 2, but the yarn guide hole 5 is moved in front of the end surface of the warping drum 2. The yarn guided by these yarn guides 5 is then wound around a central string not shown in detail.

  In order to form a so-called thread twill or sizing division, a Reeds rod 9 is provided, and these Reeds rods 9 are arranged between the conveyor belt 8 and the conveyor belt 8. Each Leeds rod 9 has a tip 10 at its end facing the yarn guide device 7, which tip 10 faces substantially outward in the radial direction of the warping drum 2. Such a tip 10 is disposed on the Leeds rod 9 so as not to move.

  Each Reeds rod 9 is held by the warping drum 2 at at least two positions 11 and 12. That is, the Leeds rod 9 is configured to rotate together with the warping drum 2 when the warping drum 2 rotates.

  FIG. 2 shows the holding of the Reeds rod 9 at position 12. Here, the warping drum 2 has an opening 13 through which the positioning drive unit 14 is guided outward in the radial direction. The positioning drive unit 14 has a push rod 16 that can be displaced in the direction of a double arrow 15 shown in FIG. A gripper disposed at the radially outer end of the push rod 16 (the left end in FIG. 2) has two jaws 17 and 18, and these jaws 17 and 18 hold the Leeds rod 9 by tightening. To do. However, the jaws 17 and 18 can be swung in the directions of arrows 19 and 20 shown in FIG. The drive necessary for this is not shown for reasons of ease of viewing the figure. When the jaws 17 and 18 swing away from the Reeds rod 9, the positioning drive unit 14 is detached from the Reeds rod 9. Then, the push rod 16 can move inward in the radial direction, and the jaws 17 and 18 do not protrude on the warping drum 2.

  However, it is basically sufficient if the push rod 16 is displaced radially inward to such an extent that the jaws 17, 18 of the gripper do not overhang the outside of the conveyor belt 8 in the radial direction. The outer end of the conveyor belt 8 defines a wound yarn generated on the warping drum 2, that is, an inner limit (boundary) 21 for the generated yarn layer.

  A sensor device 22 is provided on the end surface of the warping drum 2. The sensor device 22 detects the position of the Reeds rod 9, on the other hand. On the other hand, the sensor device 22 also detects the height or thickness of the wound yarn on the conveyor belt 8.

  Information on the thickness is supplied to the control input terminal 23 of the positioning drive unit 14. Then, the positioning drive unit 14 uses the information on the thickness so that the space just required by the wound yarn is available between the radial inner surface of the Leeds rod 9 and the limit 21. The Leeds rod 9 can be positioned. As a result, the Leeds rod 9 is not bent by being pushed radially outward by the winding yarn. However, on the other hand, the Reeds rod 9 is not bent radially inward by the yarn guided on the Reeds rod 9 radially outward, in other words, by the yarn arranged above the Reeds rod 9. .

  As an advantage of this configuration, the tip 10 of the Leeds rod 9 does not change its position (the position of the tip) when the Leeds rod 9 is bent by the winding yarn. Correspondingly, if a twill is to be generated, the correspondingly guided thread is placed above the Reeds rod 9 (ie radially outward of the Reeds rod 9) or below the Reeds rod 9 (in other words the radius of the Reeds rod 9). It is possible to guide the thread guide hole 5 around the tip 10 of the lead rod 9 so that the guide can be guided in any direction inward). That is, since the position of the tip 10 is not changed by the wound yarn, the cost required for the control of the yarn guide 6 is not excessive, and thus a high warping speed is achieved. can do.

  When the wound yarn, that is, the generated warp reaches a certain width (= spread parallel to the axis of the warping drum 2), the warp approaches the positioning drive unit. The positioning drive unit 14 is disposed at the position 12, that is, at a position adjacent to the end surface where the yarn guide device 7 is disposed. Here, the push rod 16 of the positioning drive unit 14 will interfere with the continuous transport of the warp yarns that are separated from the end face. However, when the warp reaches the position 12, the warp already holds the Leeds rod 9 firmly with high certainty. In that case, no other holding is basically necessary. Next, the positioning drive unit 14 is detached from the Reeds rod 9 due to the separation by the swinging of the jaws 17 and 18, and the push rod 16 is expanded so that the space between the limit 21 and the Reeds rod 9 is expanded. Move radially inward. When the warp reaches position 11 and possibly reaches another position where the lead rod 9 is firmly held by the warping drum 2, the same process (a series of operations) is repeated again.

  A series of information can be used so that the push rod 16 of each positioning drive 14 does not enter too early and too late.

  Since the warp yarn, that is, the wound yarn, is conveyed by the conveyance belt 8, or generally the conveyance surface, the conveyance drive unit can provide information on how much the conveyance drive unit has moved the conveyance surface. That is, if the conveyance drive unit moves the conveyance surface in a direction away from the end surface of the warping drum 2 where the yarn guide device 7 is disposed, the wound yarn (= warp yarn) is pushed. It is close to each position 12 to the extent that the rod 16 will enter.

  Alternatively or additionally, a sensor, not shown in detail, for detecting the width of the warp or wound yarn can also be used. In many cases, it is sufficient if the sensor detects the position of the warp edge farther from the end face of the warping drum 2 where the yarn guide device 7 is arranged.

  Another possibility is to detect the warp width by adding the widths of the warp bands when the widths of the wound warp bands are known. One warp band is composed of a single yarn or a plurality of yarns wound at the same time. As already mentioned briefly, in this case, one warp band can have 1 to 128 yarns. Not all warp bands need to be the same width. However, since the desired pattern is known, the construction of the warp band and hence the width is also known.

  Even when the tip 10 of the Leeds rod 9 is not fixedly coupled to the Leeds rod 9, basically the same solution can be applied. In that case, the tip 10 is formed as a catching hook, which can swing on the yarn path to guide the yarn above the lead rod, or feed the yarn under the lead rod 9 Therefore, the yarn is held outside the yarn path.

  The above-described configuration can also be applied when the warping drum 2 stops during aging and the yarn guide 6 rotates around the axis of the warping drum 2.

  The partial warp for pattern warp according to the present invention can be used for producing a so-called pattern warp or short warp.

1 ... Partial warping machine for patterned warp
2 ... Warping drum
4 ... Rotation direction
6 ... Thread guide
7 ... Thread guide device
9 ... Leeds rod

Claims (9)

A warp partial warper (1) having a warp drum (2), a yarn guide device (7) having at least one yarn guide (6), and a plurality of lead rods (9), The yarn guide (6) and the warping drum (2) are relatively movable in the rotational direction (4) around the axis of the warping drum (2), and are guided by the yarn guide (6). In the pattern warp partial warping machine (1), there is provided means for guiding the formed yarn to the upper or lower part of the Reeds rod (9) at each Reeds rod (9).
At least one of the Leeds rod (9) Ri positionable der relatively different positions with respect to the axis of the warping drum (2),
The warp partial warp for a pattern warp, wherein the Reeds rod (9) is displaceable by a positioning drive unit (14) . The Leeds rod (9) is releasably the positioning drive (14) being coupled with the handle warp sectional warping machine according to claim 1, wherein. The Reeds rod (9) is distributed over its length and coupled to at least two positioning drive units (14), and the positioning drive units (14) are independently of each other from the Reeds rod (9). The partial warping machine for a pattern warp according to claim 2 , wherein the warp can be detached. And the sensor device (22) is provided for detecting the height of the wrapped yarn, according to claim 2-3, characterized in that the sensor device (22) is connected to the positioning drive (14) The partial warp machine for the handle warp according to any one of the items. The positioning drive unit (14) positions the lead rod (9) at a positioning position, and the height of the wound yarn is maintained as it is below the lead rod (9) at the positioning position. The partial warping machine for patterned warp according to claim 4 . The warp partial warp for a pattern warp according to any one of claims 1 to 5 , wherein the Reeds rod (9) is detachably fixed to the warping drum (2). The partial warping machine for a handle warp according to claim 6, wherein the warping drum (2) rotates with aging, and the yarn guide (6) is fixed in the rotational direction. A conveyance surface (8) that can be displaced in parallel with the axis of the warping drum (2) by the conveyance drive unit is disposed on the circumferential surface of the warping drum (2), and the conveyance drive unit and the positioning drive The partial warping machine for a pattern warp according to any one of claims 2 to 7 , wherein the parts (14) are synchronized with each other. A warp width detecting device for detecting the length of the wound yarn is provided in parallel with the axis of the warping drum (2), and the warp width detecting device is connected to the positioning drive unit (14). The partial warping machine for a handle warp according to any one of claims 2 to 7 , further comprising an end.

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