JP2008115523A - Sectional warper for patterned warp yarns - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sectional warper having a simplified warping process. <P>SOLUTION: The sectional warper 1 for patterned warp yarns has a warping drum 2, a conveying surface device 14 movable in parallel with the axis of the warping drum 2 on the peripheral surface of the warping drum 2, a plurality of dividing rods 17-29 and a yarn guide device 6. In order to simplify the warping process, at least two dividing rods of the plurality of the dividing rods 17-29 are arranged on the peripheral surface positions of the warping drum 2 and the tangent lines of these peripheral surface positions have an angle of ≥45°. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention includes a warping drum, a conveying surface device provided on the peripheral surface of the warping drum so as to be movable in parallel with the axis of the warping drum, a plurality of dividing rods, and a yarn guide device. The present invention relates to a partial warper for patterned warp.

  A warp drum portion having a warp drum, a conveying surface device provided on a peripheral surface of the warp drum so as to be movable in parallel with the warp drum axis, a plurality of dividing rods, and a yarn guide device A warping machine is known from US Pat.

  A pattern warp partial warp is used to produce a pattern warp, sometimes referred to as a “short warp”. In order to produce a patterned warp, one or more yarns are wound around the free end side of the warp drum. Each yarn is often wound around the circumference of the warping drum until the desired length of the handle warp is reached. Usually, the yarn is fed while being displaced slightly away from the free end for each wound layer, and a yarn layer having a conical shape is obtained. Next, the conveying surface device conveys this yarn layer from the free end side of the warping drum to the fixed end side, and a place is provided for subsequent yarns to be fed.

If a warp having a desired width is wound around the warping drum, basically the endlessly wound yarn is cut to generate a front end and a rear end of the pattern warp. For this purpose, a dividing rod having a function as a cutting rod is used. In order to generate a thread twill, a dividing rod having a function as a reeds rod is used. In order to generate a yarn twill, for example, in the first wound layer, the yarns are alternately arranged radially outside and radially inside the warping drum with respect to the dividing rod. When generating a sizing pitch, the dividing rod is used as a sizing rod, each nth yarn is located radially inward of the warping drum with respect to this dividing rod, and the remaining yarns are said dividing It arrange | positions with respect to a rod at the radial direction outer side of a warping drum. In general, a plurality of these functions must be utilized when manufacturing a patterned warp.
European Patent Application No. 1520920

  The warping drum has a fixed end, which is one end, held by a machine base. In the simplest case, this machine base configured as a rectangular box also carries a dividing rod. Correspondingly, most known warping drums have a flat circumferential surface, and a dividing rod is arranged in the region of this flat part. On the other hand, the conveyance surface device is provided in a region of a rounded peripheral surface. Therefore, when wound on the warping drum, the warp drum radius partially with respect to the dividing rod so that the yarn is in the correct position radially inside the warping drum of the corresponding dividing rod. The direction will have to be guided quite inward. This makes the warping process, that is, winding the yarn around the warping drum difficult.

  The object of the present invention is to simplify the warping process.

  The problem is that in the partial warping machine for a handle warp of the type pointed out at the beginning, at least two of the dividing rods are circumferential surfaces of one half when the warping drum is cut along the axis. This is solved by the fact that the angle formed by the tangents at these peripheral surface positions is 45 ° or more.

  In other words, the tangents at the positions where these dividing rods are disposed intersect each other at an angle. These dividing rods need not be adjacent dividing rods. However, it is not a dividing rod arranged at a position where the warping drums face each other, but a dividing rod arranged on one side, particularly on the peripheral surface of the vertical half. As is the case in the prior art, it is no longer constrained to place all the dividing rods in one or two planes of the circumferential surface of the warping drum, thereby providing a greater degree of freedom in the arrangement of the dividing rods. . The position of the dividing rod can now be better adapted to the movement trajectory of the yarn guide device. At the same time, the control of the movement of the yarn is simplified and the warping process is simplified.

  Preferably, the warping drum has a circular cross section. At the same time, the circumferential surface of the warping drum substantially coincides with the movement track of the yarn guide device. In practice, however, the circular shape is generally approximated by a polygon. Such a polygonal shape is also included in the term “circular shape”. However, even in such a polygon-circular shape, the warping drum becomes more uniform, which is well manifested on the one hand when winding the yarn, but also on the other hand when the finished pattern warp is unwound from the warping drum. Turn into. It is inherently easier to avoid imbalances.

  Mainly, all the dividing rods are divided into a plurality of groups, and the dividing rods (17 to 29) have the same axial position at their tips for each group, and the axis of the warping drum is the same. It is preferable to arrange so that the distances in the radial direction are the same. Often two types of dividing rods are used: a first type of dividing rod acting on the front end of the formed yarn layer and a second type of dividing rod acting on the rear end of the formed yarn layer. . Therefore, the first type of dividing rod is arranged further inside in the radial direction, and the second type of dividing rod is arranged further outside in the radial direction, and the radial distance is determined by the thickness of the yarn layer to be formed. Almost matches. Since a thread layer having a conical front is formed, the ends of these dividing rods are displaced relative to each other in the axial direction. By the way, if all the dividing rods acting on the front end of the yarn layer, that is, the first winding layer are arranged on the same circumference around the axis of the warping drum, the control of the yarn movement is relatively easy. All that is necessary is to make the small movements necessary to feed the yarn above or below each dividing rod. The same is true for another dividing rod acting at the rear end (in the thickness direction) of the yarn layer, ie the last wound layer.

  It is preferable that the yarn guide device mainly includes at least one yarn guide, and the yarn guide is controlled so as to be able to go around the tip of the at least one dividing rod on the yarn guide device side. That is, the yarn guide device is used to determine whether the yarn wound around the warping drum is to be arranged at the radially outer side or the radially inner side of the dividing rod. When the yarn is guided in front of the leading end of the dividing rod, that is, fed onto the conveying surface device in the region between the leading end and the free end of the warping drum, the yarn becomes the radius of the dividing rod. Will come down the direction. When the yarn is fed on the opposite side (ie, behind) the leading end of the dividing rod, the yarn will be radially outward of the dividing rod. In other words, by determining the axial position of the yarn feeding position to feed the yarn in the area of each dividing rod, it is possible to control whether the yarn comes above or below the corresponding dividing rod.

  In this case, it is preferable that the at least one dividing rod is configured as a passive dividing rod. That is, the passive dividing rod does not have a movable element. The passive dividing rod can have a capture tip that projects at an angle relative to the dividing rod, which prevents the thread once placed from sliding off the dividing rod. However, the capture tip need not be moveable to “capture” the corresponding yarn. By using a passive dividing rod, the manufacturing cost is reduced and the operation can be simplified. Since the dividing rod must be separated from the pattern warp when the finished pattern warp is pulled out of the warping drum, it is sufficient to separate the mechanical connection. There is no need to separate the coupling of parts such as those used to control the moving parts of the dividing rod.

  Mainly, the transport surface device has a plurality of transport belts, and each of the dividing rods is disposed immediately behind the transport belt in the circumferential direction of the yarn guide device. At the same time, a conveyor belt can be used to fix the yarn transition in the area of the dividing rod. When the yarn is placed on the conveying belt, the yarn is fixed and held with relatively good friction thereon. This friction is desirable so that the conveyor belt can move the yarn layer away from the free end of the shaping drum toward the opposite end. On the other hand, it is not desirable to generate a large friction with the dividing rod. The dividing rod is fixed to the shaping drum so as not to be displaced at least in the axial direction during aging, and the yarn has to slide on the dividing rod. Therefore, when a plurality of dividing rods are arranged immediately before and after the conveying belt in the circumferential direction of the yarn guide device, the fixing of the corresponding yarn in the correct position is basically guaranteed only for the first dividing rod. ing. In this case, two (or more) dividing rods can certainly be arranged behind the conveyor belt in the circumferential direction. However, this is only allowed if these dividing rods take on different functions, i.e. do not require one thread fixing at the same time. For example, one dividing rod may act on the first winding layer of the yarn layer, and another dividing rod arranged after the same conveying belt in the circumferential direction may act on the last winding layer. In that case, it is ensured that the yarns fixed by the conveyor belt in the axial direction can always be used to perform one dividing rod function by means of the conveyor belt provided in front.

  Preferably, the yarn guide is configured to perform an avoiding motion to avoid the end of the dividing rod before traversing the conveying belt provided in advance in the circumferential direction before the dividing rod. That is, it is preferred that the position of the yarn relative to the end of the dividing rod is already adjusted before the yarn leaves the conveyor belt and preferably before the yarn is placed on the conveyor belt. This has several advantages. On the other hand, it is possible to secure a sufficient time for moving the corresponding yarn feeding position in the axial direction. On the other hand, the yarn can be guided so as to move linearly on the peripheral surface of the warping drum from the conveyor belt to the desired position relative to the dividing rod, so that the movement of the yarn can be controlled. Control is further simplified.

  By the way, when considering the configuration of the dividing rod, the control of the movement of the yarn is no longer performed by the dividing rod but by the yarn guide, so that it is no longer necessary to consider the spacing between the yarn guides in the circumferential direction. That is, the upper limit of the number of yarn guides that can be simultaneously operating in the yarn guide device is not set by the dividing rod.

  Mainly, the conveyor belt is arranged with an interval in the circumferential direction of the warping drum, and the interval is determined so that the angle α between the yarn feeding and the yarn drawing is a maximum of 30 ° or less. Is preferred. More preferably, the angle α is not more than 25 degrees. That is, the conveyor belt is uniformly disposed on the circumferential surface of the warping drum, and no excessively high yarn tension is applied to the longitudinal edge of any of the conveyor belts. Rather, the yarn tension is distributed sufficiently evenly across all conveyor belts. Uniform distribution favors the life of individual parts. Furthermore, the drive control of the conveyor belt is simplified. All conveyor belts can be moved with more or less the same drive power. Uniform tension distribution has a positive effect on the quality of the warp, especially when the warp length and thread tension are high. In the four “vertex belts” that have been provided in the past, in some cases, indentations were recognized on the yarn. In an extreme case, the friction of the guide was large here during aging, and the yarn could be broken at these points during feeding.

  Mainly, the conveyor belt is preferably provided at the same interval in the circumferential direction except for the region of the V-shaped notch formed in the warping drum (2). In other words, except for the region of the V-shaped notch, the conveying belt is disposed on the circumferential surface of the warping drum at substantially equal intervals. This also helps to equalize the load acting on the conveyor belt and increase the life of the warping drum.

  It is preferable that the dividing rod is mainly fixed to the warping drum. This has two advantages. On the other hand, it is possible to adapt the position of the dividing rod to the circumferential surface of the warping drum without having to make a large change in the machine base for holding the warping drum. On the other hand, when the pattern warp is unwound, the dividing rod can be unwound together without causing the dividing rod to collide with another element of the warping machine. If the dividing rod can be removed together when the pattern warp is unwound from the warp drum, it is no longer limited to having to pull the dividing rod from the pattern warp on the warp drum. Access to the dividing rod is easy. Furthermore, it is possible to reduce the tension in the pattern warp region that has already been drawn out from the warping drum, so that the dividing rod can be easily pulled out.

  It is preferable that the dividing rod is mainly disposed in a peripheral surface region in which at least a central angle of the warping drum is 150 °.

  According to the partial warping machine of the present invention, the warping process can be simplified.

  1 has a warp drum 2, which is supported by a shaft 4 of a machine base 3, and the machine base 3 includes a base 5 and a warp drum 2. As shown in FIG. It is connected. FIG. 2 shows the warping drum 2 in a front view. In FIG. 1, some elements of the warping drum 2 described below are omitted for the sake of clarity.

  A yarn guide device 6 is provided on the opposite side of the warp drum 2 from the machine base 3, and the yarn guide device 6 has a plurality of yarn guides 7. Each yarn guide 7 is disposed at the radially outer end of the arm 8, and the arm 8 is coupled to a shaft 9 disposed coaxially with the axis 40 of the warping drum 2.

  The shaft 9 is also provided with a rotary creel 10 having a plurality of yarn supplying bobbins 11. The yarn 12 is drawn out from each yarn supplying bobbin 11, and the drawn yarn 12 is supplied to each yarn guide 7. Is done. The rotary creel 10 is supported on a base 13. Specifically, the yarn feeding bobbin 11 can be rotated around the axis 40 of the warping drum 2 by rotating the rotary creel 10 with an electric drive device (not shown).

  A plurality of conveyor belts 14 are distributed on the circumferential surface of the warping drum 2, and the yarn 12 is fed onto the conveyor belt 14 by the yarn guide 7. The yarn 12 is fed at the free end of the warping drum 2, and the rotary creel 10 is also arranged on the free end side. The conveyor belt 14 is used to convey the yarn layer 15 formed by winding the yarn 12 from the free end toward the machine base 3 side.

  As can be seen from FIG. 2, the warping drum 2 has a substantially circular cross section. More specifically, the cross section of the warping drum 2 is approximated to a circle by a polygon. One conveyor belt 14 is disposed at each vertex of the polygon. The angle at which the yarn 12 rides on the conveyor belt 14 or runs away from the conveyor belt 14, that is, the angle formed by the front and rear portions of the yarn 12 is in the range of 10 ° to 20 °. An exception is the area of the V-shaped notch 16, where the yarn 12 must be bridged between two conveying belts 14 that are relatively spaced apart. However, here too, the angle at which the yarn 12 rides on the corresponding conveyor belt 14 or runs away from the corresponding other conveyor belt 14, that is, the angle formed by the portion of the yarn 12 before and after the conveyor belt 14 is 30 ° or less. Even below. Here, two V-shaped bars 32 and 33 are provided between two conveying belts 14 arranged on both sides in the circumferential direction of the V-shaped notch 16, and by using these two V-shaped bars 32 and 33, The edge pressure acting on the yarn 12 can be reduced. These V-shaped bars 32 and 33 are made of stainless steel and run in synchronization with the belt. The uncut yarn is now redirected and guided together. Therefore, excessive edge pressurization from the yarn 12 to the conveying belt 14 does not occur. Rather, substantially the same load is applied to all the conveyor belts 14. Therefore, the conveyor belt 14 can be driven by a common driving device represented by a driving chain. In addition, the uniform load distribution positively affects the quality of the warp, especially when the warp length and the yarn tension are large.

  Furthermore, it can be seen from FIG. 2 that the conveyor belt 14 is arranged substantially evenly around the circumferential surface of the warping drum 2. The intervals between the conveyor belts 14 are substantially the same except for the interval between the two conveyor belts 14 a and 14 b adjacent to the V-shaped notch 16. Dividing rods 17 to 29 are arranged between several conveyor belts 14. For the sake of clarity, the dividing rods 17, 19, 20, and 24 are shown in FIG. The dividing rods 18, 21, 22, 23, 25 to 29 are omitted.

  Dividing rods 17 to 29 include those having different functions. The dividing rods 17-29 are usually also called reed rods, cutting rods or sizing rods depending on their function. However, in order to simplify the following description, the term “dividing rod” is used uniformly regardless of the function.

  As can be seen from FIG. 2, the dividing rods 17 to 29 are arranged at various positions on the peripheral surface of the warping drum 2, and tangents at these positions intersect with each other to form an angle. That is, a relatively wide portion of the peripheral surface of the warping drum 2 can be used to arrange the dividing rods 17 to 29. The region used for arranging the dividing rods 17 to 29 is a region exceeding a central angle of 150 ° on the peripheral surface of the warping drum 2, and in this embodiment, a region exceeding the central angle of 180 ° among the peripheral surfaces. It is. At the same time, the dividing rods 17 to 29 in the respective half halves of the warping drum 2, that is, the semi-cylindrical portions formed respectively up and down by cutting along the vertical plane, have an angle formed by their tangents of 45 °. It is placed in various areas that exceed. The dividing rods 17 and 20 have an angle formed by their tangents of about 85 °. As a result, it is no longer restricted to arrange all the dividing rods 17 to 29 on one or two planes of the peripheral surface of the warping drum 2 as applicable in the prior art, and it relates to the arrangement of the dividing rods 17 to 29. A greater degree of freedom is obtained. The positions of the dividing rods 17 to 29 can now be better adapted to the movement trajectory of the yarn guide device 6. At the same time, the control of the movement of the yarn 12 is simplified and the warping process is simplified.

  In other words, since a relatively large amount of space is available for placing the dividing rods 17-29, the dividing rods 17-29 can also be placed at a relatively large distance from one another. For feeding the yarn at the correct position above the individual dividing rods 17 to 29 (radially outward with respect to the dividing rods 17 to 29) or below (radially inside with respect to the dividing rods 17 to 29). Control of the movement of the yarn 12 can be simplified and the warping process is simplified.

  As can be seen from FIG. 2, two dividing rods 18, 24 or 19, 25 or 21, 26 or 22, 27 are arranged between several conveyor belts 14. The pair of dividing rods 18, 24, 19, 25, 21, 26, 22, 27 are arranged at different radial positions with respect to the warping drum 2. As can be seen from FIG. 1, the dividing rod 24 on the radially outer side has an axial tip disposed further away from the rotary creel 10 than the axial tip of the dividing rods 19 to 23 on the radially inner side. Have. This can be explained by the fact that the dividing rods 19 to 23 act on the yarn 12 when the first winding layer of the yarn 12 is wound around the circumferential surface of the warping drum 2. In contrast, the other dividing rods 24 to 28 act on the ends of the yarn 12, i.e. on the radially outermost layer, in other words on the outer layer of the yarn layer 15. Therefore, it can be said that only one dividing rod having one function is disposed between two adjacent conveyor belts 14.

  The movement of the yarn 12 is controlled exclusively via the yarn guide 7. The yarn guide 7 is rotatable around the axis 30 of the arm 8, and an electric drive device 31 is provided to rotate the yarn guide 7. As a result, the yarn 12 can be fed either closer to the free end of the warping drum 2 or fed farther away from the free end of the warping drum 2. Is possible. That is, the yarn 12 can be guided to the side of the tip of the dividing rods 17 to 29, or the yarn 12 can be placed on the dividing rods 17 to 29.

  By configuring the yarn guide 7 in this way, the dividing rods 17 to 29 can be configured as passive dividing rods in which no movable element is provided. Each dividing rod 17-29 has a capture tip 34. However, the trapping tip 34 is rigidly fixed to the dividing rod 17 and merely prevents the yarn 12 once placed on the dividing rods 17 to 29 from slipping down.

  In order to facilitate the withdrawal of the dividing rods 17 to 29 from the warped warp in the subsequent process, it is also possible to removably attach the capture tip 34 to the dividing rods 17 to 29. It is. The trapping tip 34 thus configured can be removed before pulling the dividing rods 17-29 from the warped warp.

  Due to the fact that the dividing rods 17 to 29 are configured as passive dividing rods, it is no longer necessary to control the dividing rods 17 to 29 and to transmit control information. That is, as shown in FIG. 1, the dividing rods 17 to 29 can be fixed to the warping drum 2.

  In other words, if the yarn layer 15 is finished, the so-called continuously wound yarn 12 (yarn interruption due to pattern switching is ignored here) is cut, and the front end and the rear end of the pattern warp yarn are formed. The pattern warp formed in this way is then drawn out from the warping drum 2 and taken up by a winding mechanism (not shown). At this time, the dividing rods 17 to 29 separated from the warping drum 2 are slightly fed together with the handle warp, whereby the dividing rods 17 to 29 can be separated from the warping drum 2. By separating the dividing rods 17 to 29 from the warping drum 2, the tension in the area near the dividing rods 17 to 29 of the pattern warp is reduced so that the dividing rods 17 to 29 can be easily pulled out. ing.

  In order to guide the yarn 12 as desired with respect to one dividing rod 17, the corresponding yarn guide 7 is positioned before reaching the conveying belt 14 which is arranged in a circumferential direction ahead of the dividing rod 17. To the arm 8 and move to a desired position. Accordingly, a sufficient time can be ensured in order to move the position where the yarn 12 is fed to the desired position in the axial direction. On the other hand, the yarn 12 can be guided so as to move linearly on the circumferential surface of the warping drum 2 from the conveying belt to the desired position relative to the dividing rod. The movement control is further simplified.

  Next, when the yarn 12 passes through the dividing rod 17, the yarn 12 is fixedly held by the conveyor belt 14. This allows a very accurate positioning of the thread 12 with respect to the dividing rod 17. Of course, the same applies to the remaining dividing rods 18 to 29 and the conveyor belt 14 attached to these dividing rods 18 to 29 in a corresponding manner. The control of the movement of the yarn 12, in particular the capture of the yarn 12 by the dividing rods 17-29, is no longer carried out by the yarn guide 7 but by the dividing rod 17, thereby limiting the number of yarn guides 7 that can be used simultaneously. It does not exist theoretically. However, for practical reasons and design reasons, there is of course another upper limit. Since the individual dividing rods 17 to 29 are arranged at relatively large intervals in the circumferential direction of the warping drum 2, the individual yarn guides 7 are necessary to move between the dividing rods 17 to 29. Time can be lengthened. As a result, the peripheral speed of the yarn guide 7 can be further increased.

It is a schematic side view of the pattern warp partial warper. It is a front view of the warp drum of the partial warp for pattern warp.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Partial warp for pattern warp 2 Warping drum 6 Thread guide device 7 Thread guide 14 Conveying belt 16 V-shaped notch 17-29 Dividing rod 34 Capture tip 40 Axis

Claims (12)

  A warping drum (2), a conveying surface device provided on the peripheral surface of the warping drum (2) so as to be movable in parallel with the axis (40) of the warping drum (2), and a plurality of dividing rods In the pattern warp partial warper (1) having (17-29) and a yarn guide device (6), at least two of the dividing rods (17-29) It is arranged at the circumferential surface position of one half when cut along the axis (40), and the angle formed by the tangent at these circumferential surface positions is 45 ° or more. Partial warping machine.   The partial warp for warp warps according to claim 1, characterized in that the warping drum (2) has a circular cross section.   All the dividing rods (17 to 29) are divided into a plurality of groups, and the dividing rods (17 to 29) have the same axial position at their tips for each group, and the warping drum ( The partial warp for warp warps according to claim 1 or 2, characterized in that the radial distance from the axis (40) of 2) is the same.   The yarn guide device (6) has at least one yarn guide (7), and this yarn guide (7) is located on the yarn guide device (6) side of at least one of the dividing rods (17-29). The partial warping machine for a handle warp according to any one of claims 1 to 3, wherein the warp is controlled so as to be able to go around the tip.   The partial warp for warp warps according to claim 4, characterized in that the at least one dividing rod (17-29) is configured as a passive dividing rod.   The transport surface device has a plurality of transport belts (14), and each of the dividing rods (17 to 29) is disposed immediately behind the transport belt (14) in the circumferential direction of the yarn guide device (6). The partial warping machine for a pattern warp according to any one of claims 1 to 5, wherein   Avoidance of the end of the dividing rod (17-29) before the yarn guide (7) crosses the conveyor belt (14) provided ahead of the dividing rod (17-29) in the circumferential direction. The partial warping machine for a handle warp according to claim 6, wherein the warping is performed.   The conveyor belt (14) is arranged at an interval in the circumferential direction of the warping drum (2), and this interval is determined such that the angle α between the yarn feeding and the yarn drawing is a maximum of 30 ° or less. The partial warper for pattern warp according to claim 6 or 7, characterized in that The partial warping machine for a pattern warp according to claim 8, wherein an angle α between the yarn feeding and the yarn drawing is a maximum of 25 ° or less.   The conveyor belt (14) is provided at the same interval in the circumferential direction except for the region of the V-shaped notch (16) formed in the warping drum (2). The partial warper for the handle warp according to any one of claims 6 to 9.   The partial warping machine for a pattern warp according to any one of claims 1 to 10, wherein the dividing rod (17 to 29) is fixed to the warping drum (2).   The said dividing rod (17-29) is arrange | positioned in the surrounding surface area | region whose at least central angle of the said warping drum (2) is 150 degrees, The any one of Claims 1-11 characterized by the above-mentioned. Partial warping machine for patterned warp according to item.

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