JP3854571B2 - Method for producing pattern warp and partial warp for pattern warp - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
One invention according to the present application relates to a method for manufacturing a warp for a handle in which a yarn is guided around a warping drum and fed onto an axial conveying device, and the yarn is guided through a yarn chute. Another invention according to the present application further includes a warping drum having an axial conveying device movable in the warping direction, at least one yarn guide movable around the warping drum, and around the warping drum. The present invention relates to a partial warp for a pattern warp provided with a plurality of yarn chutes arranged in a distributed manner.
[0002]
[Prior art]
A method for producing this type of pattern warp and a pattern warp partial warper for producing a pattern warp are known (see Patent Document 1).
[0003]
[Patent Document 1]
EP (European Patent) No. 0652310A1
In this known device, the yarn displacementr tilted in the opposite direction to the warping direction is moved in the warping direction by a small value in each winding layer of the yarn. A yarn guide feeds the yarn onto the yarn displacement device, from which the yarn slides down. As the yarn displacer moves in each winding layer, the individual winding layers then occupy various axial positions on the warping drum, and the individual yarn layers are stacked to obtain a conical shape. When the required length of the pattern warp, which can also be referred to as “short warp”, has been achieved, ie when the required number of wound layers has been obtained, the yarn displacer is returned to its starting position again. At the same time, the conveyor belt of the conveyor forming the axial conveying device is moved in the warping direction by one yarn pitch and the next yarn layer of the cone can be wound.
[0004]
[Problems to be solved by the invention]
The known ones described above require on the one hand a relatively complicated movement control of the yarn displacer and on the other hand the conveyor belt. This yarn displacementr must advance a relatively small distance when the yarn guide makes one revolution. As this distance, a distance 0.5 to 2 times the thread thickness is described. Means must be provided for moving the yarn displacer back to its starting position. This requires high design and maintenance costs. Nevertheless, satisfactory warping results cannot be achieved in all cases. In part of the described movement range (operating area) of the yarn displacementr, the cone angle generated by the movement of the yarn displacementr is too steep and the yarn slips off the cone and becomes tangled. Therefore, a problem occurs when the yarn is later unwound from the warping drum.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to provide a pattern warp manufacturing method and a pattern warp partial warper that enable the manufacture of a pattern warp by simple means.
[0006]
[Means for Solving the Problems]
The problem is that, in the method of the type pointed out at the beginning, the yarn chute is inclined with respect to the warping direction, and the yarn is fed onto the yarn chute along the yarn chute by the number of turns corresponding to the predetermined warp length. This is solved by a manufacturing method in which the yarn chute is pulled out from under the spool layer (also referred to as a warp band) after completion of the yarn supply by the corresponding number of turns.
[0007]
By such processing, all the wound yarns can be fed onto the yarn chute in a state where they are accurately arranged. Since the yarn chute is inclined with respect to the warping direction, in this case, the wound layers are aligned in the inclination direction of the warp band group on the axial conveying device in the correct order. Thereby, a warp band group having a desired configuration is obtained. If the warping drum has a circumference of, for example, 7 m and a warping length of 140 m is desired, a spool layer of 20 turns is required. That is, 20 yarns are arranged in the correct order on the yarn chute. If the 140m is wound on the warp drum chute, the chute is simply pulled out. At that time, even when the yarns wound around the yarn chute are moved to the axial conveying device, the order of the yarns is not changed. In other words, the spool layer moving from the yarn chute to the axial conveyance device is successively applied to the front of the warp band group formed by the yarn previously wound on the axial conveyance device as the yarn chute is pulled out. Touch. Even at the beginning of the warping process, this process gives satisfactory results. When pulling out the yarn chute, the tension is surely weakened in the outer wound layer. But this is still acceptable. This is because, in the case of woven or knitted fabrics made with pattern warp, the edge region woven (knitted) by the outer wound layers generally only plays a subordinate role. That is because the edge area of the woven or knitted fabric often becomes a part that is no longer needed during subsequent processing as a textile product. Control of the movement of the yarn chute is very simple. Only a simple backward movement is enough to pull out the yarn chute from under the yarn fed on it, that is, from below the wound layer (winding layer) of the yarn or yarn group. No special precise control is required on the yarn chute in order to form the warp bands on the warping drum. The yarn guide used for guiding the yarn must be guided so that the final winding is still compatible with the yarn chute and is preferably fed onto the yarn chute so that it can slide down a small distance. It just has to be done. That is, the arrangement of the yarn guide with respect to the yarn chute and the arrangement of the yarn chute with respect to the axial conveying device can be kept constant when the yarn is wound around the yarn chute.
[0008]
Preferably, the yarn chute is inclined at an angle corresponding to the inclination angle of the conical portion (front portion) of the warp band group. The inclination angle of the conical portion can be determined in advance according to the amount of change including, for example, the yarn pitch and the yarn thickness. When the yarn chute is adjusted to an angle equal to this inclination angle, the yarn tension does not change when the yarn chute is pulled out from under the wound and formed spool layer. The individual wound layers of the wound layer are uniformly transferred to the side of the previously formed warp band group. The spool layer then “drops” a small distance radially inward with respect to the warp drum, which distance corresponds to the thickness of the yarn chute.
[0009]
Preferably, the yarn chute is moved linearly. With such a configuration, relatively simple control of the yarn chute is sufficient. And a linear drive device that can achieve high speed can be used.
[0010]
Preferably, the movement of the yarn chute is performed in synchronism with the yarn guidance, ie “timed”. In that case, if the yarn guide is the yarn or (when multiple yarns are warped simultaneously), or the last wound layer of the belt-like yarn is fed onto the yarn chute, the yarn chute will work immediately Can do. Thus, a high warping speed can be achieved.
[0011]
Preferably, when forming the bobbin layer on the yarn chute by supplying yarn, relative movement is prevented from occurring between the yarn chute and the axial conveying device. In this case, the formation of the wound layer on the yarn chute can be performed with very high quality. The only action that takes place when placing the yarn on the warping drum is the withdrawal (retraction) of the yarn guide. The movement of the yarn chute occurs only after the corresponding “wound layer” of the yarn sheet is wound.
[0012]
Preferably, after the yarn chute is pulled out, the axial conveying device is moved in the warping direction by one warping pitch. As a result, a space for forming a new “wound layer”, that is, a space for forming a “wound layer” on the yarn chute with the required number of turns of the new yarn is formed. Since the previous spool layer is carried out (moved) to the warp band group side on the direction conveying device, the yarn chute can be drawn out and then enter the axial direction conveying device side again.
If a single yarn is only guided around the warping drum at the same time, the warping pitch matches the yarn pitch.
However, when multiple yarns are guided around the warping drum at the same time, as is possible with, for example, a rotary creel, the warping pitch is the band-like or bundle-like yarn that is produced at that time. It will match the pitch.
[0013]
Preferably, the yarn chute is swung in a direction opposite to the warping direction before re-entering the axial conveyance device side, and after re-entry is completed, the yarn chute is swung in the warping direction to return to the original inclination (predetermined inclination). ). This configuration has the advantage that the yarn chute never collides with the formed warp band group upon re-entry. At the time of re-entry, the yarn chute can obtain a small space with the cone by a small swinging motion. In particular, if the yarn is somewhat uneven with local slabs, under unfavorable circumstances, the yarn chute will be caught by such slabs upon re-entry and will not move and the yarns in front of the warp bands In this way, when the yarn chute operates (moves) so as to have a small distance (space) from the front of the warp band group at the time of re-entry, such a fear can be eliminated. .
[0014]
According to the present invention, in the partial warping machine for the handle warp of the type described at the beginning, the yarn chute is arranged to be inclined with respect to the warping direction, and is configured to be displaceable with respect to the warping drum in the sliding direction. Is solved.
[0015]
That is, one or more yarns are fed onto the yarn chute by one or more yarn guides. Individual winding yarns of one or more yarns slide on the yarn chute towards the warping drum, where only the first winding yarn can completely slide radially inward. Then, each winding yarn subsequent to the first winding yarn sequentially contacts the preceding winding yarn. That is, the entire yarn remains on the yarn chute to form the bobbin layer until the desired warp length is reached.
As described above, the bobbin layer wound on the yarn chute is delivered without any problem to the warp band group side simply by drawing the yarn chute from under the yarn. That is, the movement of the yarn chute is a movement in a direction opposite to the direction in which the individual wound yarns of the yarn slide on the yarn chute.
[0016]
Preferably, Displaceable relative to the shaping drum (2) in the sliding direction (22) The yarn chute (15) When supplying yarn by the yarn guide, Stationary to the machine base (4) And the yarn guide is always configured to feed the yarn chute (15) at the same position. That is. That is, with this configuration, the yarn chute does not require costly motion control. In this case, synchronization with the yarn guide is very simple. That is, the yarn guide can always feed individual yarns at the same position onto the warping drum via the yarn chute.
[0017]
Preferably, the configuration is such that the inclination angle of the yarn chute is adjustable. In this case, the inclination angle of the yarn chute is matched with the inclination angle of the conical portion of the warp band group formed on the warping drum. This angle of inclination should be varied depending on, among other things, the thickness of the yarn used, the yarn pitch or the warp pitch.
[0018]
Preferably, the axial conveying device includes a plurality of conveyor belts, and one yarn chute is attached to each conveyor belt. Such a configuration significantly improves the formation of warp band groups having conical portions. The individual yarns are basically wound exactly at the point where they are fed later, i.e. they contact the warping drum.
[0019]
Preferably, each yarn chute has two fork-like members such that each one of the two fork-like members projects radially inward from the conveyor belt on both sides of the conveyor belt to which it is attached. It is arranged in. That is, the fork-like members are present on the left and right sides of the conveyor belt on the conveyor belt conveyance direction side. With this configuration, a state in which the lowermost winding yarn of the yarn or the bundle-like (band-like) yarn is actually held on the yarn chute and the subsequent subsequent winding yarn can come into contact with the winding yarn is ensured by this configuration. . A situation in which the lowermost thread passes through the gap between the thread chute and the conveyor belt and the subsequent thread contact occurs in an uncontrolled state at a position that is no longer guaranteed with the required certainty. I can't get up. Furthermore, this configuration has the advantage that the operation of the yarn chute in the direction close to the conveyor belt does not need to be controlled with excessively high accuracy. As long as the fork-like member is configured to project radially inward from the conveyor belt, the function of the yarn chute is reliably ensured. In other words, an operation error (tolerance) in the millimeter range can naturally be accepted.
[0020]
Preferably, These fork-like members are provided in a region outside the conveyor belt in the radial direction of the warping drum so as to have a gap consisting of a mutual distance between the fork-like member and the fork-like member. It is to adopt such a configuration. In the gap, particularly in the case of a thin yarn chute, the wound layer placed on the yarn chute can contact the front of the warp band group already formed on the conveyor belt. Therefore, each yarn chute can be pulled out without fear that the individual yarns forming the bobbin layer may be mistakenly moved to the warp band group side. The main part of that form of retention is certainly already applied via yarn tension. The gap between the fork-like members improves the yarn holding performance (certainty). In addition, the configuration saves material and can reduce weight by omitting the material, and the force required for acceleration during the yarn chute entry operation remains small.
[0021]
In that case, particularly preferably, Gap consisting of mutual distance Is the width of the conveyor belt Bigger than It is to be configured to be dimensions. If comprised in this way, the simplification of control will be achieved further at the time of operation control of the yarn chute. That is, there is no problem if the yarn chute enters excessively beyond a small distance. Again, contact with the conveyor belt does not occur and damage to the conveyor belt or other negative phenomena can be prevented.
[0022]
Preferably, the yarn chute is configured to have a back surface extending parallel to the front surface thereof. With this configuration, the yarn chute can be pulled out easily.
[0023]
In that case, it is particularly preferable that the front surface and the back surface have a mutual distance of a maximum of 4 mm. The step in which the individual wound yarns forming the bobbin layer have to slide down (move) relatively to the warp band group side can be suppressed to a very small distance necessary for the sliding down (movement). Only a small change in tension occurs depending on the thickness dimension of the front and back surfaces.
[0024]
Preferably, the yarn chute has a fluid-operated piston / cylinder drive that operates in the sliding direction. For example, a pneumatic cylinder can be used as the fluid operated piston and cylinder drive. With such a cylinder, a high speed can be achieved during the yarn chute entry operation. The operation stroke (stroke amount) is relatively small. The operating stroke of the cylinder is only slightly larger than the height of the warp band group divided by the sine of the inclination angle of the conical portion. This operating stroke is only in the centimeter range. Such a stroke can be achieved relatively quickly by means of a fluid-operated piston and cylinder drive. Naturally, an electromagnetic drive (solenoid drive) can be used instead of the fluid-operated piston / cylinder drive.
[0025]
In that case, it is preferable that the yarn chute has a swing drive device. This swing drive device can be formed by another unique motor. However, it can be realized even if a cam control device is provided so that the yarn chute swings away from the warp band group for a short time when entering the basic position. As an alternative embodiment, the oscillating drive can also be formed by a “spring” that oscillates and separates the yarn chute from the front of the warp band group formed of wound yarns. In that case, the yarn chute is swung again by the yarn to be wound next (yarn tension) and returned to the original position.
[0026]
Preferably, the surface of the yarn chute is configured to have a coefficient of friction of 0.2 or less with the yarn. With this configuration, the friction between the yarn and the yarn chute is remarkably reduced, and the yarn can be slid in the direction of the conveyor belt without major problems immediately after being wound around the yarn chute. It can be pulled back with power.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on preferred embodiments of the present invention based on the drawings.
[0028]
The patterned warp partial warping machine 1 has a warping drum 2. The warping drum 2 is rotatably supported on a machine base 4 via a rotating shaft 3. The rotation function of the warping drum 2 is necessary for feeding out the warped yarn sheet. However, on the other hand, in order to place the yarn, the warping drum 2 needs to be configured so as to be locked so as not to rotate.
[0029]
In this embodiment, the axial conveying device has a plurality of conveyor belts 5 distributed around the circumferential surface of the warping drum 2, and each of the plurality of conveyor belts 5 via pulleys 6 and 7. And can be moved. The pulley 7 on the side adjacent to the machine base 4 has a stepping motor as the driving device 8. The drive device 8 drives the conveyor belt 5 so that a carrier surface 16 (carrier surface of the conveyor belt) 16 located outside each conveyor belt 5 moves toward the machine base 4 side. This moving direction is referred to as the “warping direction” and is schematically indicated by an arrow 9 in FIG.
[0030]
A yarn guide 10 is disposed at the end portion of the warping drum 2 on the side opposite to the machine base 4, and this yarn guide 10 can move (circulate) around the warping drum 2 integrally. It has an eye 11. For this purpose, the yarn guide 10 has a drive device (not shown). This drive device (not shown) may be provided with a unique drive device for driving the yarn guide 10 on the side away from the machine base 4 of the warping drum 2, but on the side away from the machine base 4 (machine When not provided on the opposite side of the base 4, for example, it may be configured to be driven from the machine base 4 side of the warping drum 2 via a drive shaft (not shown) inserted through the rotary shaft 3. The yarn 12 guided by the yarn guide 10 is arranged on the outer circumference of the peripheral surface of the warping drum 2 from the creel 14 shown schematically through the disc-shaped yarn disk 13 and on the circumference. The yarn 12 is supplied so as to be placed on the yarn chute 15 (see FIG. 2). The yarn chute 15 is inclined by an angle α with respect to the carrier surface 16 of the conveyor belt 5, in other words, the warping direction, and the inclination angle α is set to an arbitrary angle within a range of 6 ° to 26 °. It can be set. However, in this case, a relatively small value (inclination angle), particularly a value of 18 ° or less (that is, a value of 6 ° to 18 ° or less) is preferable.
[0031]
As shown in FIG. 3, the yarn chute 15 has two fork-like members 17 and 18, and the two fork-like members 17 and 18 are connected to each other via a cross member 19. The tip of the actuating member (cylinder rod) 20 of the piston / cylinder device 21 that operates by air pressure is connected to the cross member 19 and acts on the cross member 19. However, instead of the piston / cylinder device 21, an electromagnetic drive device (solenoid drive device) or other linearly acting drive device can also be used.
[0032]
Using the piston / cylinder device 21, the yarn chute 15 can slide in both directions, indicated by a double arrow 22 in FIG. 2, parallel to the front surface 24 of the yarn chute 15, and in this direction the operating member 20 is accommodated in or protruded from the cylinder 23 of the piston / cylinder device 21. Since the yarn 12 slides in the direction of the conveyor belt 5 on the front surface 24 of the yarn chute 15, the direction of the surface of the front surface 24 is also referred to as “sliding direction”.
[0033]
Both fork-like members 17, 18 are radially inward from the carrier surface 16 of the conveyor belt 5 (downward diagonally to the left in FIGS. 1 and 2: in this specification this direction is radially inward and opposite to it The direction further protrudes radially outward). The specific configuration is shown in FIG. The mutual distance A between the fork-like members 17 and 18 is larger than the width B of the conveyor belt in the substantially circumferential direction of the warping drum 2. For this reason, the yarn chute 15 can be moved in the direction of the carrier surface 16 of the conveyor belt 5 or in the opposite direction with relatively rough control.
[0034]
The piston / cylinder device 21 is fixed to a suspension device 26 via a shaft fulcrum 25. The suspension device 26 is attached to the machine base 4 side, for example.
[0035]
The inclination angle of the yarn chute 15 can be adjusted, and in this embodiment, it can be adjusted via an adjusting screw 100 disposed in the suspension device 26. The yarn chute 15 can swing toward the carrier surface 16 of the conveyor belt 5 around the shaft fulcrum 25 within an angle defined by the adjusting screw 100 (an angle shallower than the limited angle). Further, another adjusting screw 70 is provided in the suspending device 26, and the swinging of the yarn chute 15 in another direction can be limited (restricted) by the adjusting screw 70. Both adjusting screws 100, 70 are normally adjusted so that the thread chute 15 can only perform a small rocking movement.
[0036]
The yarn chute 15 is subjected to the action of a spring 50 disposed between the cylinder 23 and the suspension device 26, and the spring 50 pulls the yarn chute 15 away from the carrier surface 16. However, as described above, the limit of movement at this time is limited by the adjusting screw 70.
[0037]
This yarn chute 15 is pressed toward the conveyor belt 5 under the tensile stress of the yarn 12 abutting against the yarn chute 15, and the yarn chute 15 has a maximum inclination angle and an angle limited by the adjusting screw 100. The inclination angle α can be occupied.
[0038]
In FIG. 2, the inclination angle α between the yarn chute 15 and the carrier surface 16 of the conveyor belt 5 is exaggerated. Actually, the inclination angle α is 6 to 26 °, and a small value of 18 ° or less is preferentially used within the range. Accordingly, the crossing range (crossing range changing range) between both fork-like members 17 and 18 of the yarn chute 15 and the carrier surface 16 of the conveyor belt 5 is estimated from the state shown in FIG. 2 when the angle changes. It changes at a smaller angle (shallow angle) than possible. The crossing range is such that the yarn 12 that slides toward the carrier surface 16 side of the conveyor belt 5 via the yarn chute 15 can be placed on the conveyor belt 5 in the front region of the yarn chute 15, that is, in the vicinity of the pulley 6. Is set.
[0039]
Next, the operation process (step) of the pattern warp partial warper 1 will be described with reference to FIG.
[0040]
As schematically indicated by the oblique lines, a large number of yarns 12 have already been fed onto the carrier surface 16, and these yarns 12 have a conical portion on the front (the front of the fed many yarns). Are wound so as to form a warp band group 29 having an inclination angle α. This inclination angle α depends in particular on the thickness of each yarn and the yarn density (yarn pitch). In general, the smaller the yarn density, the smaller the inclination angle α. The yarn chute 15 is adjusted (set) at an inclination angle so as to coincide with the expected angle of the inclination angle α. Therefore, the back surface 30 of the yarn chute 15 comes into contact with a warp band group 29 having a cone shape (winding layer having a tapered end surface). The back surface 30 is formed parallel to the front surface 24 of the yarn chute 15.
[0041]
The yarn guide 10 guides the yarn 12 around the warping drum 2 (see FIG. 1) in the direction of the arrow 31, and the guide eye 11 guides the yarn 12 to the upper end region of the yarn chute 15, that is, the radially outward portion. Supply yarn to the area. Then, the yarn 12 slides on the front surface 24 of the yarn chute 15 inward in the radial direction (lower left diagonally in FIG. 2). At that time, the yarn of the first winding layer is already in contact with the carrier surface 16 of the conveyor belt 5, and due to the configuration of the fork-like member 17 projecting radially inward from the carrier surface 16, the conveyor belt 5 Since it does not slide on, it is securely held in place. As the yarn guide 10 makes one more turn, the yarn 12 rests on the yarn chute 15 above the yarn of the first winding layer. Such an operation is continued each time the yarn guide 10 rotates around the warping drum, and a series of spool layers neatly arranged on the front surface 24 is obtained on the front surface 24 of the yarn chute 15. This sheet-shaped thread wound layer has the same conical portion inclination angle α as the warp band group 29 composed of already wound thread layers, and the fork-like members 17 and 18 They are separated by a thickness d in the antiwarping direction. However, in general, this thickness d is less than 4 mm.
[0042]
If the yarn guide 10 is placed on the yarn chute 15 with a yarn winding layer made up of the required number of windings, and the required number of yarns are lined up on the yarn chute 15 accordingly, the yarn chute 15 slides in the sliding direction 22. That is, it can be pulled out in the radial direction while being inclined with respect to the carrier surface 16. The individual yarns that have been on the front surface 24 of the yarn chute 15 up to that point are sequentially delivered to the warp band group 29 side at that time. Actually, the pulling-out operation of the yarn chute 15 occurs very rapidly in the sliding direction 22 radially outward (slightly upward in FIG. 2). Then, immediately after the drawing operation, the yarn chute 15 returns to the position shown in FIG. 2, and thus the yarn chute 15 receives the next yarn to be wound so as to have the next spool layer having the required number of turns. Is possible.
[0043]
As described above, when the yarn chute 15 moves outward in the radial direction, the conveyor belt 5 moves in the warping direction 9 (see FIG. 1: rightward in FIG. 2) by a distance corresponding to the yarn pitch. For this reason, when the yarn chute 15 moves (returns) to the position shown in FIG. 2 again, the yarn chute 15 is located at the position immediately before the warp band group 29.
[0044]
The “drawing operation” and “entry operation” that are operations in the sliding direction 22 of the yarn chute 15 can each be realized within 1/10 second.
[0045]
The yarn chute 15 is configured to swing by swing driving means (swing drive device). That is, the yarn chute 15 is swung by the tension of the spring 50 which is the swing driving means when the yarn chute 15 enters, that is, when the yarn chute 15 returns to the position shown in FIG. It functions so as to prevent a collision with a yarn that is slightly apart from the upper warp band group 29. The swing angle (the swing limit angle) can be adjusted by the adjusting screw 70. Generally, a relatively small rocking motion is enough. However, at the latest, when the yarn chute 15 is completely re-entered, the yarn chute 15 swings back to the position shown in FIG. 2 and the tensile force corresponding to the radially inward direction is applied to the yarn chute 15. It swings and returns due to the spring action.
[0046]
The high speed of moving the yarn chute 15 results in a relatively large acceleration. As an advantage, the yarn chute 15 can be pulled out without any problem between the yarn 12 placed on the front surface 24 and the warp band group 29 on the back surface 30, and the yarn chute 15 can be pulled out. Or there is no risk that part of the yarn will remain caught there. As another configuration, the front surface 24 and the back surface 30 of the yarn chute 15 are parallel to each other and are parallel to the sliding direction 22. Further, at least the surface of the yarn chute 15 on which the yarn 12 slides (front surface 24) is processed and finished so that the friction coefficient with the yarn 12 is relatively small, 0.2 or less. That is, the friction between the front surface 24 and the yarn 12 is extremely small.
[0047]
The yarn chute 15 functions in the same manner when not only a single yarn but also a plurality of yarns supplied via, for example, a rotary creel (not shown) are wound around the yarn chute 15 at the same time. . In that case, the bundle-like yarn 12 or the belt-like yarn 12 is fed onto the yarn chute 15, and the bundle-like yarn (or the belt-like yarn) is sequentially turned in the horizontal direction in exactly the same manner (state) as the single yarn. Are fed side by side. At that time, even if individual yarns of a bundle of yarns (yarn group) are not necessarily placed in a good order as shown in FIG. 2, the individual bundles of yarns or belt-like yarns have an appropriate order. As long as that is not a problem. In this case, after the yarn chute 15 reaches the partial warping machine, and after the final yarn has been transferred to the carrier surface, the original winding again before the first winding yarn reaches the yarn chute 15 again. Return to the state (see FIG. 2).
[0048]
Since the warping drum is known per se, it is not shown and described in detail, but the warping drum has an opening device.
[0049]
In this specification, the term “warping drum” does not mean only a cylindrical body or a substantially cylindrical body. Instead of the generally cylindrical warping drum 2, another geometrical arrangement, for example a polygonal shape or a longitudinal elongated body as known, for example, from DE-PS 1227398, is also possible. Use in the concepts involved.
[0050]
【The invention's effect】
According to the pattern warp manufacturing method and the pattern warp partial warper according to the present invention, the pattern warp can be manufactured by simple means.
[Brief description of the drawings]
FIG. 1 is a side view conceptually showing the schematic structure of a partial warp for pattern warp.
FIG. 2 is a partially enlarged side view showing a configuration of a main part of the partial warping machine shown in FIG. 1;
FIG. 3 is a partially enlarged front view showing a configuration of a fork-like member and a carrier surface portion shown in FIG.
[Explanation of symbols]
1 …… Part warper for pattern warp
2 ... Warping drum
9 …… Waring direction
10 …… Thread guide
12 …… Thread
15 …… Thread chute
16 ... Axial transfer device
22 …… Sliding direction

Claims (19)

In a method for producing a warp for a pattern, wherein the yarn is guided around a warping drum and fed via a yarn chute onto an axial conveying device,
The yarn chute is tilted with respect to the warping direction;
The yarn is fed on the yarn chute along the yarn chute by the number of turns corresponding to the predetermined warp length,
A method for producing a warp for a pattern, wherein the yarn chute is pulled out from under the bobbin layer after completion of yarn supply by the number of turns corresponding to the warp length. The method according to claim 1, wherein the angle at which the yarn chute is inclined corresponds to the inclination angle of the conical portion of the warp band group. The method according to claim 1 or 2, wherein the yarn chute is drawn out linearly. The method according to claim 1, wherein the drawing operation of the yarn chute is performed in synchronization with yarn guidance. The method according to any one of claims 1 to 4, wherein no relative movement is caused between the yarn chute and the axial conveying device when the yarn is fed onto the yarn chute. 6. The method according to claim 1, wherein after the yarn chute is pulled out, the axial conveying device is moved in the warping direction by one warping pitch. The yarn chute swings in a direction opposite to the warping direction before re-entry, swings in the warping direction after completion of re-entry, and returns to the original tilted state. The method of any one of these. A warping drum having an axial conveying device movable in the warping direction, at least one yarn guide movable around the warping drum, and a plurality of yarn chutes arranged distributed around the warping drum In the partial warping machine for patterned warp with
The yarn chute (15) is arranged to be inclined with respect to the warping direction (9), and is displaceable with respect to the warping drum (2) in the sliding direction (22). Partial warping machine for patterned warp. The yarn chute (15) , which is displaceable with respect to the shaping drum (2) in the sliding direction (22), is positioned stationary with respect to the machine base (4) when supplying yarn by the yarn guide , 9. The partial warp according to claim 8, wherein the yarn guide is configured to feed the yarn chute (15) always at the same position . The partial warping machine according to claim 8 or 9, characterized in that the inclination angle (α) of the slanted yarn chute (15) is adjustable. The said axial direction conveying apparatus has several conveyor belts (5), The said thread chute (15) is attached to each conveyor belt (5), The one of Claims 8-10 characterized by the above-mentioned. The partial warping machine according to item 1. Each yarn chute (15) has two fork-like members (17, 18), each one of which is on both sides of the conveyor belt (5) to which it is attached. The partial warping machines according to claim 11, wherein the partial warping machines are arranged so as to project from the conveyor belt (5) inward in the radial direction. In the radial direction of the warping drum (2), in the region outside the conveyor belt (5), a gap having a mutual distance (A) is formed between the fork-like member (17) and the fork-like member (18). 13. A partial warping machine according to claim 12, characterized in that these fork-like members (17, 18) are provided . 14. The partial warping machine according to claim 13, wherein the gap formed by the mutual distance (A) is larger than the width (B) of the conveyor belt (5). 15. Partial warping machine according to any one of claims 8 to 14, characterized in that the yarn chute (15) has a back surface (30) extending parallel to the front surface (24). 16. Partial warping machine according to claim 15, characterized in that the front face (24) and the back face (30) have a mutual distance of a maximum of 4 mm. 17. Partial warping machine according to any one of claims 8 to 16, characterized in that the yarn chute (15) has a fluid-operated piston / cylinder drive (21) operating in the sliding direction (22). . The partial warping machine according to claim 17, characterized in that the yarn chute (15) has swing drive means. The friction coefficient generated between the surface of the yarn chute (15) on which the yarn is placed and the yarn (12) to be fed is 0.2 or less. The partial warping machine according to item 1.

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