JP4088267B2 - Method for producing pattern warp and partial warp for pattern warp - Google Patents

Description

  In the present invention, a plurality of yarns are drawn from a rotating rotary creel, guided around the circumferential surface of the warping drum, and movable on the circumferential surface of the warping drum in parallel with the axis of the warping drum. The yarn that is fed onto the conveying surface device and temporarily unneeded yarn is excluded from the warping process and is wound around the auxiliary conveying device in the axial region of the warping drum until the yarn is reused, In addition, the present invention relates to a method for manufacturing a warp for a pattern which is conveyed in a direction away from the rotary creel by the auxiliary conveying device. Furthermore, the present invention provides a warp drum having a transport surface device movable in the axial direction on the peripheral surface, a plurality of yarn guides movable around the peripheral surface of the warp drum, and movable in synchronization with the yarn guide A rotary creel and an auxiliary conveying device arranged in the axial region of the warping drum, each yarn guide having a yarn guiding device, which is one in at least one positive operating position. The present invention relates to a partial warp for a pattern warp that feeds a yarn onto a conveying surface device and winds the yarn around an auxiliary conveying device at one passive operation position.

  A method for producing the pattern warp and the partial warp for the pattern warp are known from Patent Document 1 (see Patent Document 1). The partial warp for the pattern warp has the advantage that the production speed is relatively high. That is, it is possible to guide a plurality of yarns around the warping drum simultaneously with a plurality of yarns, the maximum number of which is the same as the number of bobbins arranged in the rotary creel. If the yarn in the pattern warp does not require a certain yarn for the actual pattern, this unnecessary yarn is not guided around the circumferential surface of the warping drum but is wrapped around the auxiliary conveying device. By doing so, it is possible to generate various different patterns in the warp for patterns relatively freely.

  In order to minimize the consumption (waste) of the yarn that is not temporarily involved in the warping process, an auxiliary conveyance device having a diameter as small as possible is used. Generally, each time the yarn guide rotates, yarn waste (debris) having a length corresponding to the peripheral surface of the auxiliary conveyance device is generated. For example, when a wire having a diameter of 1 mm is used as the auxiliary conveying device, the waste generated each time it is rotated is 3.14 mm long, and this length is sufficiently acceptable.

However, there may be situations in which only a small number of yarns are involved in the warping process and quite a lot of other yarns are wound around the auxiliary conveying device. Theoretically, the diameter of this auxiliary conveying device increases twice as much as the yarn diameter as the winding layer increases. Therefore, when there are a large number of yarns that are not involved in the warping process, the waste increases greatly. This problem becomes a problem that cannot be overlooked when the warp for the pattern becomes long. For example, when it is desired to warp a pattern warp having a length of 700 m, if the circumference of the warping drum is 7 m, 100 rotations are required. In that case, without additional measures, it is sufficient to generate debris with a length of more than 100 m, and this situation can no longer be overlooked.
German patent invention No. 10061490.

  An object of the present invention is to provide a method of manufacturing a warp for a pattern that can suppress yarn waste as much as possible and a partial warper for the warp for pattern.

  The problem is solved in the method for manufacturing a warp for a handle described at the beginning by at least temporarily moving the auxiliary conveying device more rapidly than the conveying surface device.

  With such a configuration, it is possible to always provide a sufficient space for the yarn wound around the auxiliary conveying device. That is, the increase in diameter is suppressed within the limit. Certainly it is permissible to wrap several yarns on top of each other so that the diameter of the auxiliary device increases from 1 mm to 2, 3 or 5 mm, for example. However, the auxiliary conveying device moves faster than the conveying surface device, thus providing sufficient space for the yarn to be excluded from the warping process, thus avoiding an increase in diameter. When the auxiliary conveying device has a diameter of, for example, 1 mm and a warp length of 700 m, the waste generated from the yarn not involved in the warping process is about 3.2 m, that is, a sufficiently acceptable range.

  Preferably, the speed of the auxiliary conveying device is configured to be selected or changed depending on the yarn excluded from the warping process. That is, it is possible to calculate in advance the space necessary for arranging yarns on the auxiliary transport device with a slight overlap of yarns. Since sampling within one repeat is known, it is possible to calculate in advance how much space is required on average for a yarn not involved in the warping process. This necessary space can be obtained by moving the auxiliary transport device at an appropriate speed. If many yarns that become part of the handle by being removed are excluded from the warping process and are not guided around the peripheral surface of the warping drum, but are wound around the auxiliary conveying device accordingly A lot of space is required. That is, when manufacturing a warp for a pattern in which a large number of yarns are excluded from the warping process, the speed of the auxiliary transport device is increased. On the other hand, when only one yarn is excluded from the warping process, the speed of the auxiliary conveying device can be selected accordingly.

  Preferably, the yarn wound around the auxiliary conveyance device is cut at a predetermined distance (length) from a position where the yarn is wound around the auxiliary conveyance device. This is because tension is generated in the yarn wound around the auxiliary conveyance device due to asynchronous movement (operation) between the conveyance surface device and the auxiliary conveyance device. This tension can then be so great that uncontrollable thread breaks occur. The tension may be transmitted at least partly to the yarn already wound on the peripheral surface of the warping drum before it breaks. Such a situation may have an unfavorable effect when the pattern warp is unwound from the warping drum in the subsequent process. In order not to generate such tension, it is desirable to cut the yarn as described above.

  In the case of cutting as described above, it is preferable to use a driven cutting device for the cutting. The driven cutting device has at least one driven cutting element. This cutting element can be, for example, an electromechanical scissor. The yarn tension is kept small by the driven cutting device. That is, the yarn can be cut before dangerous tension is increased. Cutting the yarn in this way results in two separated yarn ends. The first yarn end tied to the auxiliary conveying device side falls loosely to the center of the warping drum, where it is further conveyed by the auxiliary conveying device. Since the yarn is wound around the auxiliary conveyance device with a sufficient number of winding layers, the yarn to be conveyed is sufficiently fixed in the auxiliary conveyance device. The cut second yarn end extends to the peripheral surface of the warping drum and is fixed by a yarn layer formed on the conveying surface device. The separated yarn length hangs down inside the warping drum, but it does not get in the way. Even at the time of feeding or rewinding, the yarn is always cut only at the beginning or end of the warp length, so that the separated yarn end does not get in the way.

  Preferably, the yarn wound around the auxiliary conveying device is cut in a region limited by a boundary of an opening extending in the radial direction of the front wall of the warping drum in the circumferential direction of the warping drum. . The yarn excluded from the warping process is moved in front of the warping drum, and is not placed on the peripheral surface of the warping drum, but is placed on a conveying surface device there. With the opening extending in the radial direction of the front wall, a state occurs in which all the yarns wound around the auxiliary conveying device are in the same direction. These yarns are then conveyed through openings extending in the radial direction of the warp drum front wall when the auxiliary conveying device is moved. In this case, at the same time, a defined position where the yarn can be cut is obtained.

  Further, the above-mentioned problem is solved by moving the auxiliary conveying device at least temporarily faster than the conveying surface device in the pattern warp partial warper of the type described at the beginning.

  As described above in connection with the manufacturing method, it is thus possible to continuously obtain sufficient space on the auxiliary conveying device for the yarns excluded from the warping process, and the auxiliary conveying device by the wound yarn Does not increase in diameter. Thereby, the waste length of the yarn not involved in the warping process can be kept relatively small.

  Preferably, the speed of the driving device of the auxiliary transport device is configured to be changeable. In this way, the speed of the auxiliary transport device can be adapted to the required space. This adaptation can be performed at the time of switching warping tasks (warping targets), that is, when it is desired to warp a new pattern with a partial warping machine for a pattern warp. However, speed switching can also be performed during the manufacture of the handle warp. In that case, the auxiliary conveying device is moved more quickly when more yarns are excluded from the warping process and is moved more slowly when fewer yarns or only one yarn is excluded from the warping process. .

Preferably, a control device is provided, which controls a yarn guiding device comprising a yarn guide (14) and a motor (19) for changing the operating position of the yarn guide (14) , and Depending on the number of yarn guiding devices moved to the passive operation position (c) , the speed of the auxiliary conveying device is controlled to move rapidly . The control device pre-describes as "known data" that any yarn is excluded from the warping process and therefore has to be wound around the auxiliary conveying device rather than being fed around the warping drum. Can be held. What yarns are excluded from the warping process and wound around the auxiliary conveying device can be easily calculated by counting the yarn guiding devices that have traveled to the negative position. Therefore, the control device may control the speed of the auxiliary conveying device depending on the number of yarn guiding devices in a negative (negative) position.

  Preferably, the cutting device is arranged between the peripheral surface of the warping drum and the auxiliary conveying device at a predetermined distance from the yarn guide. For example, the cutting device can be arranged at a distance of about 30 cm from the front of the warping drum. When the auxiliary conveyance device moves more quickly than the conveyance surface device in which the yarn is fed on the circumferential surface of the warping drum, for example, the conveyance belt, the length of the yarn tends to increase. Tension is generated in the wound yarn. This tension can lead to uncontrollable thread breaks as described above. This thread breakage is prevented beforehand by cutting with a cutting device, in particular in an area where an excessively large tension is not yet developed. The cutting device is disposed, for example, at a position where the yarn length increases by 4 to 5% between the auxiliary conveyance device and the warping drum circumferential surface. With this degree of increase, in most cases, the allowable yarn tension has not yet been exceeded.

  Preferably, the cutting device is configured to have at least one driven cutting element. In other words, the yarn is not only pulled through the cutting blade that will eventually be cut, but also configured so that the yarn is actually cut. For this reason, for example, an electromechanical scissor (here, for example, a scissor that is mechanically sandwiched between cutting blades by an electric driving force or cut by a rotating blade) can be used. Two driven cutting elements, for example two electromechanical scissors, if you want to cut the yarn on the yarn path from the conveying device circumferential surface to the warping drum circumferential surface or on the yarn path from the auxiliary conveying device to the warping drum circumferential surface Can be used.

  Preferably, the warping drum has a front wall provided with an opening extending in the radial direction and facing the rotary creel, and the cutting device is arranged at an inner position of the edge of the opening in the circumferential direction. Is to be configured. The edge of the opening defines an area where the yarn runs from the peripheral surface of the warp drum to the auxiliary transport device and vice versa. In order to avoid a collision between the yarn and the front of the warping drum, a certain distance is naturally provided between the edge of the opening and the yarn. However, the tightness of the yarn in this region can provide a limited space for the cutting device.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  The pattern warp partial warping machine has a warping drum 1, and a conveyor belt 2, which is a conveyor surface, is arranged on the circumferential surface of the warping drum 1 in parallel to the axis. The outer surface of the conveyor belt 2 is movable in the direction indicated by the arrow 3. Furthermore, dividing rods 4, 5, and 6 are arranged on the warping drum 1 in parallel with the axis, of which the dividing rod 4 is used as a cutting rod and the dividing rod 5 is used as a Leeds rod. Can do. Dividing rod 6 can be used for different selectable functions.

  A rotary creel 7 is arranged in front of the warping drum 1. The rotary creel 7 has a rotating body 8, which carries a large number of bobbins 9 and is driven by a motor 10 via a belt transmission 11 and a hollow shaft 12. The rotary creel 7 can accept a large number of bobbins, for example 16 bobbins.

The rotary creel 7 is connected to a support 15 via a hollow shaft 13, and the support 15 carries a yarn guide 14. Therefore, the yarn guide 14 rotates in synchronization with the rotary creel 7. The support 15 has a plurality of arms 17 that are held in the hub 16 and extend in the radial direction, and levers 18 are pivotally supported on the outer ends of the plurality of arms 17 that extend in the radial direction. These levers 18 have the lever 14 at the tip, and the levers 18 are configured to be swingable by a motor, for example, a stepping motor 19. These stepping motors 19 are controlled by a control device 20 schematically shown in FIG. The control device 20 is provided as a control device common to all the stepping motors 19 described above. The control device 20 can be arranged without any problem at a certain space (distance) from the stepping motor 19. For this reason, in FIG. 3, the connection line for control between the control apparatus 20 and the stepping motor 19 is shown with the broken line (refer FIG. 3).

1 and 3, the yarn guide 14 of the yarn guiding device including the yarn guide 14, the lever 18, and the stepping motor 19 occupies different positions or operating positions with respect to the warping drum 1. Of these positions, three positions are shown at the lower end of FIG. Sei actively during extent elapsed (Akutibu) operating position a, the yarn guide 1 4 Pull the yarn 21 from the rotary creel 7 yarn supplying the yarn 21 onto the conveyor belt 2 at b, thus one or more integer A warp layer 22 is formed. These warp yarn layers 22 are also simply referred to as “yarn layers”. It is possible to occupy a number of intermediate positions (not shown) between these positive active positions a, b.

In passive (Negatibu) operating position c, the thread guide 1 4 is not involved in the extent integer elapsed during extent elapsed integer, the yarn guide 1 4, the thread 21 'which are not required extent elapsed integer, transport The yarn 21 ′ is guided in the gap 23 between the belt 2 and the support 15 carrying the yarn guide 14, and this yarn 21 ′ does not participate in the warping process.

  An auxiliary conveying device 24 extends in the form of a wire-like monofilament plastic yarn along the axis of the warping drum 1, and this plastic yarn is inserted through the hollow shafts 12, 13 to provide a warping drum for the rotary creel 7. It extends between the storage roll 25 on the side remote from the one side and the tension drive device 26 on the end remote from the rotary creel 7 side of the warping drum 1. This auxiliary conveying device 24 functions as a winding core for the unnecessary yarn 21 ′ guided in the gap 23 at the negative operating position c by the yarn guide 14. Therefore, the yarn 21 ′ that is not required forms a yarn layer 27 on the auxiliary conveying device 24. The pulling drive device 26 moves the auxiliary conveying device 24 in the direction toward the end of the warping drum 1 on the side away from the rotary creel 7 side. Therefore, the individual yarn layers 27 reach the tension driving device 26 and can be collected in the waste container 28 in the vicinity thereof (the lower vicinity in FIG. 1).

  By simply displacing the yarn guide 14 to the negative operating position c, the yarn 21 is excluded from the warping process as a yarn 21 'which is not needed. The warping process is started again by displacing the yarn guide 14 into the active operating position a or the active operating position b or between them. By the way, as shown in FIG. 2, the yarn 21 ′ extending between the auxiliary conveying device 24 and the peripheral surface of the warping drum 1 does not interfere with the movement of the auxiliary conveying device 24 in the axial direction. An opening 30 extending in the radial direction is provided on the front surface 29 of the warping drum 1, and the boundary of the opening 30 surrounds the periphery of the auxiliary transport device 24 at a distance (space). The opening 30 has one open end 31 around the wall of the front surface 29, and this open end 31 is connected to the cutting rod 4 in the rotational direction 32 of the cutting rod 4 and the support 15 of the yarn guide 14. The space between the following Leeds rod 5 is bridged.

  The auxiliary conveying device (wire-like monofilament plastic yarn) 24 should have a diameter as small as possible so that waste (thread waste) due to the yarn layer 27 remains in a very small amount. Thus, the diameter of the auxiliary conveyance device 24 can be set to 1 mm, for example, by using a wire.

  When all the bobbins are mounted on the rotary creel 7, up to 16 yarns can be simultaneously fed onto the conveyor belt 2. As long as only one or two yarns 21 'are excluded from the warping process, the debris formed by the yarn layer 27 remains in a trace state. However, without additional measures, waste will increase as the number of yarns 21 'excluded from the warping process increases. That is, each time the yarn guide 14 rotates, the diameter of the auxiliary conveyance device 24 increases by twice the yarn thickness due to the yarn layer formed on the conveyance device 24. In other words, when the auxiliary conveyance device 24 merely moves at the speed of the conveyance belt 2, the waste formed by the yarn layer 27 increases.

  For this reason, the moving speed of the auxiliary conveyance device 24 is increased. In such a case, the auxiliary conveying device 24 travels more quickly than the conveying belt 2, and in any case, the auxiliary conveying device 24 does not travel slower than the conveying belt 2, but can take up the yarn 21 '. Therefore, a sufficient space is always provided on the peripheral surface of the auxiliary transport device 24. At that time, it is sufficiently allowed to wrap a little number of yarns 21 '. However, priority should be given to wrapping each yarn 21 ′ directly on the auxiliary transport device 24 by a configuration as described below.

  The speed control of the auxiliary transport device 24 is performed via the control device 20 already described. In other words, the control device 20 determines how many yarns are excluded from the warping process, and thus how much space is required to receive the yarns on the auxiliary transport device 24. As. Therefore, the control device 20 can appropriately control the speed of the tension driving device 26.

  One option is to pre-calculate the average number of yarns 21 'to be excluded from the warping process within one repeat of one handle, and to use the auxiliary transport device 24 to give the yarn the required space. The tension drive 26 is set so that the speed is sufficient on average. Finally, when the number of yarns 21 ′ excluded from the warping process is the maximum number, the speed of the auxiliary transport device 24 is set in accordance with the maximum value determined so that a sufficient space is prepared.

  However, other problems arise in doing so. That is, when the auxiliary conveyance device 24 moves faster than the conveyance belt 2, a situation as schematically shown in FIG. 1 occurs. That is, FIG. 1 shows a plurality of yarns 21a ′, 21b ′, and 21c ′. These yarns 21a ′, 21b ′, and 21c ′ are the ends wound around the auxiliary conveying device 24. However, it moves more rapidly than the end fixed by the yarn layer 22 on the conveyor belt 2, so that it becomes increasingly “oblique”. This increases the length with which the yarns 21a ′, 21b ′, 21c ′ must be bridged. Thus, when one thread is going to be longer than the natural length of the thread, tension is generated in the thread. The tension generated in this way causes uncontrollable thread breakage in the thread 21c '.

  For this purpose, a cutting device 33 for cutting the yarn 21c ′ is arranged before an unacceptable tension is generated. This cutting device 33 is represented by the shape of “scissors” in FIG. That is, this is an aggressive cutting device, ie a cutting device having at least one driven element, for example one electromechanical “scissors”. A rotating blade or something similar is naturally conceivable.

  As can be seen from FIG. 2, in this embodiment, two cutting devices 33 are provided, and one of them is for yarn running from the circumferential surface of the warping drum 1 to the auxiliary conveying device 24. In addition, another cutting device 33 is provided for yarns that run from the auxiliary conveying device 24 to the circumferential surface of the warping drum 1.

  After the cutting, as shown in FIG. 1, two yarn ends 34 and 35 are generated in the cut yarn. Since the yarn is often sufficiently wound around the auxiliary conveying device 24, the yarn end 34 is fixed to the auxiliary conveying device 24. That is, one yarn end 34 is conveyed to the waste container 28 by the auxiliary conveying device 24 and can be discarded. The other yarn end 35 hangs down on the conveying belt 2 and is firmly held by the yarn layer 22 there.

  In any case, the yarn 21 'must be cut only at the start and end of the warp length, and the yarn 21' is excluded from the warping process only at the start and end of the warp length, that is, the pattern warp length. It is possible to cut the yarn 21 'inside the warping drum 1 without any problem.

  INDUSTRIAL APPLICABILITY The present invention can be used for a method for producing a warp for a pattern, a partial warp for a pattern warp, and the like.

It is the figure which represented notionally the structure of the outline of the principal part of the partial warping machine for the handle warps concerning the Example of this invention. It is a cross-sectional view of the warping drum of the partial warp for pattern warp shown in FIG. It is a figure which shows one Example of the thread | yarn guide which has a thread | yarn guidance apparatus.

Explanation of symbols

1 ... Warping drum
2 ... Conveying surface device
7 ... Rotary creel 21,21 '... Thread 24 ... Auxiliary transport device

Claims (11)

On a conveying surface device in which a plurality of yarns are drawn from a rotating rotary creel, guided around the peripheral surface of the warping drum, and movable on the peripheral surface of the warping drum in parallel with the axis of the warping drum Until the yarn that is not needed temporarily is excluded from the warping process and the excluded yarn is reused, wound around the auxiliary conveying device in the axial region of the warping drum, and In the method for manufacturing a warp for a pattern, the method includes a step of being conveyed in a direction away from the rotary creel with the auxiliary conveying device.
A method wherein the auxiliary transport device moves at least temporarily faster than the transport surface device.   The method according to claim 1, wherein the speed of the auxiliary conveying device is selected or changed depending on the yarn excluded from the warping process.   3. The method according to claim 1, wherein the yarn wound around the auxiliary conveying device is cut at a predetermined length from a position where the yarn is wound around the auxiliary conveying device.   The method of claim 3, wherein a driven cutting device performs the cutting.   The yarn wound around the auxiliary conveying device is cut in a region defined by a boundary of an opening extending in a radial direction of a warp drum front wall in a circumferential direction of the warping drum. Or the method of 4. A warping drum having a conveying surface device movable in the axial direction on the peripheral surface, a plurality of yarn guides movable around the peripheral surface of the warping drum, and a rotary creel movable in synchronization with the yarn guide And an auxiliary conveying device arranged in the area of the axis of the warping drum, each yarn guide having a yarn guiding device, and this yarn guiding device has one yarn at at least one active operating position. In a partial warp for pattern warp, which feeds the yarn onto the conveying surface device and wraps this yarn around the auxiliary conveying device in one passive operating position,
Partial warping machine characterized in that the auxiliary transport device (24) moves at least temporarily faster than the transport surface device (2).   The partial warping machine according to claim 6, wherein the driving device of the auxiliary conveying device (24) can change the speed. The partial warper is provided with a control device (20), and the control device (20) includes a yarn guide (14) and a motor (19) for changing the operating position of the yarn guide (14). And controlling the speed of the auxiliary conveying device (24) to be quickly moved depending on the number of yarn guides (14) moved to the negative operating position (c). The partial warping machine according to claim 6 or 7, characterized in that.   The cutting device (33) is arranged between the peripheral surface of the warping drum (1) and the auxiliary conveying device (24) at a predetermined distance from the yarn guide (14). The partial warping machine according to any one of -8.   10. Partial warping machine according to claim 9, characterized in that the cutting device (33) has at least one driven cutting element.   The warping drum (1) has a front wall (29) with an opening (30) opening in the radial direction and facing the rotary creel (7), the cutting device (33) opening in the circumferential direction The partial warping machine according to claim 9 or 10, wherein the partial warping machine is disposed at a position entering inward from an edge of (30).

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