JPS6146569B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a yarn piecing device, and more particularly to a yarn piecing device suitable for manufacturing a single fancy yarn by continuously piecing a variety of yarns (for example, of various colors). As a system for creating frost patterns, random color patterns, etc. in textiles, knitting, etc., for example, in a loom, (a) multiple types of yarns of different colors are prepared for the weft yarn, and a random or regular pattern is created. (2) A system in which a weft yarn is selected and a weft insertion operation is performed; (b) A system in which a weft fabric is woven with undyed yarn and then a random pattern is created by print dyeing or the like. However, in case (a), it is necessary to perform the weft thread selection operation every cycle or multiple cycles of the weft insertion operation, which becomes an impediment to increasing the speed of the loom, and in a loom with a large weaving width.
It is impossible to make different colors in small pitches smaller than the width of the fabric. That is, if the weaving width is 2 m, the 2 m of weft threads have the same color, and it is impossible to change the color every 50 cm along the weaving width. Furthermore, since the system (b) above uses print dyeing, only low-quality fabrics can be obtained, and it is extremely troublesome and time-consuming to express complex and random color tones. From this point of view, the yarn wound on the yarn supply package is unwound, dyed in different colors at small intervals, for example, several centimeters to several meters apart, and the yarn that has been wound again is fed to the loom or knitting machine. If used as thread, the above problems would be solved, but dyeing a single thread partially is extremely complicated and requires large-scale dyeing equipment. Therefore, as a method to create woven and knitted fabrics with frost patterns and random color patterns, a variety of colored threads are successively spliced to obtain a single fancy yarn that is uneven in the length direction, and then woven. There are several methods of knitting, but the above-mentioned device for splicing yarns has the following methods:
The seam must be almost as thick as a single thread. In order to obtain fancy yarn with more beautiful spots, it is necessary to splice the yarn frequently (for example, change the colored yarn every 10 meters or so). However, if the specific requirements were not met, and each time the yarn was spliced, a piece of yarn with a length of several tens of centimeters was produced, which was longer than the length of the yarn that was actually spliced, so it could not be used practically. The present invention satisfies the above requirements and provides a splicing device suitable for manufacturing the above-mentioned fancy yarn. Hereinafter, an example in which the yarn splicing device of the present invention is applied to a fancy yarn manufacturing system will be described with reference to the drawings. FIG. 1 shows the overall configuration of the fancy yarn manufacturing system, which includes a yarn feeding section 1, a yarn selection section 2, a yarn splicing section 3, a winding section 4, and a control section 5 that controls the operation of each of the above sections. It consists of In other words, the yarn feeding section 1 allows, for example, a plurality of types of yarn feeding packages A to F of different colors to avoid interference with each other.
Placed appropriately. The above-mentioned yarn feeding packages A to F have already been rewound in a winder and yarn defects such as slabs have been removed, and then dyed in the dyeing process, and each of the above-mentioned packages can be used as a single unit in a loom, knitting machine, etc. It is something. Further, the yarn selection section 2 reserves the yarn ends pulled out from each yarn supply package and selects and positions a specific yarn end to a yarn running position according to a command from the control section 5. The fan-shaped plate 6 holding the yarn end is rotated around the axis 7, and the yarn end is placed at the running position Y.
This is to position one of the vortices from YA to YF. Further, the yarn cutting/splicing section 3 disposed subsequent to the yarn selection section 2 is comprised of a yarn splicing device according to the present invention, and is connected between the yarn supply package and the winding package 8 to cut and unwind the stopped yarn. This is a device that forcibly cuts and splices the desired type of yarn end selected by the yarn selection section and the yarn end connected to the winding package 8. It has a guide device etc. for guiding it to a fixed position, and the details will be described later. Further, in the winding section 4, a normal winding device is applied. That is, the threads are spliced onto the package 8 which is rotated by the traversing drum 10, and threads of different colors are wound at fixed pitches or at random pitches. As the control device 5 for controlling the selection of yarn type, winding length, etc., a relay sequencer, a microcomputer, etc. are used. A portion of the yarn produced by such a system is shown in FIG. That is, since one yarn _Y1 is spliced by a pneumatic yarn splicing device, the seam is almost indistinguishable from a single yarn, and is in the form of a single thread, and the yarn portion A is connected to the package A. The colors are randomly arranged, and each part has a red thread, the next thread part B is the blue thread of package cage B, the thread part C is the yellow thread of package C, and the thread part D is the green thread of package D. This allows you to obtain threads with random lengths. Note that the color arrangement, length, etc. can also be set irregularly or periodically. Next, the details of each component of the system will be explained with reference to the drawings. (1) Yarn supply unit Yarn supply package A to F have the required number of packages inserted and supported at appropriate positions, and the yarn ends YA to YF pulled out from each package pass through guide 11 and tension device 12 to select yarn. It is held by the yarn end gripping section of the device 2. (b) Yarn Selection Unit The yarn selection device 2 holds the yarn end of each yarn supply package in a fixed position, and appropriately adjusts the fan-shaped rotating plate 6 that rotates around a single axis and the stopping position of the rotating plate 6. It is comprised of a stopper device 13 etc. that selects and regulates. Note that although the figure shows a case in which six yarns are supplied, this can be changed as appropriate. As shown in FIG.
Yarn end gripping pieces 15 are fixed to a shaft 7 which is rotatably supported by
A spiral guide column 16 for guiding and supporting each yarn end is fixed on the plate 6 on the same straight line as the central axis 7. The entrance 18 of the guide hole formed in the guide column 16 is located on the axis, and even when the plate 6 turns, the distance of the thread between the guide 11 and the turning center 16 in FIG. 3 is constant. The outlet 17 of the guide hole opens toward the gripping piece 15 at the end of the plate for each yarn, and in the yarn running position, the yarn entering from the inlet 18 travels straight at the outlet 17 without being bent. A guide post is provided so that the The stopper device 13 for the rotating plate is comprised of solenoid rods STA to STE provided at regular pitch intervals within the rotating area of the plate 6. That is,
Electromagnetic solenoid fixed to the bottom of the board 14
Solenoids STA to STE of SOA to SOE are connected to board 1.
4, and the rod STA~
The STEs are provided at equal angular intervals concentrically with the pivot center of the plate. For example, in the case of FIG. 3, the contact piece 19 of the pivot plate 6 is connected to the solenoid rod STB.
When it comes into contact with and is positioned to stop, it is the thread of type B.
The positions of solenoid rods STA to STE are determined so that YB is located at the fixed position for knotting and winding. STF is a fixed stopper. The selection of the solenoid rods STA to STE is performed randomly or periodically in response to a command from a control device, which will be described later. Note that the turning operation of the turning plate 6 is, for example, the fifth rotation operation.
This is done by the device shown. That is, the rod 2 is connected to the lever 20 which is pivotally supported on the central shaft 7 of the rotating plate 6.
1, the lever group 22 to 24 and the swivel plate 6 through the cam follower 26 that follows the program cam 25 that is linked to the drive cam of the yarn splicing device.
Normal rotation and reverse rotation are performed. A spring 27 is placed between the base plate and the rotating plate, and assists the rotating plate 6 in counterclockwise rotation. Furthermore, the yarn end gripping piece 15 at the end of the plate is the sixth
As shown in the figure, it consists of two thin plates 15a and 15b fixed on a plate 6, and the thread end is relatively weak at the abutting part of the thin plates, and a suction pipe 46, which will be described later, is attached.
It is gripped with a gripping force stronger than the suction force of , and an appropriate tension is applied to the running yarn during yarn winding. Further, a yarn guide 28 is fixed to the yarn feeding side of the gripping piece 15, and as shown in FIG. A gripper 30 of the arm 29 is adapted to grip when pivoting. That is, as shown in FIGS. 4 and 6, a fixed piece 31 and a movable piece 32 are pivoted at the tip of the swing arm 29, and the movable piece 32 is biased counterclockwise in FIG. The thread is gripped between the pieces 31. In the standby position shown in FIGS. 4 and 6, the roller 35 at the rear end of the movable piece 32 engages with the fixed cam plate 36, the movable piece 32 is in the open position, and the arm 2
9, when the thread YT relatively enters between the fixed piece 31 and the movable piece 32, the roller 35 of the movable piece 32
is removed from the cam plate 36, and the yarn end is gripped by the gripper 30 by the force of the leaf spring 33. The gripper 30 is opened by a similar cam plate 52 at a position of a suction pipe 46, which will be described later, to free the gripped yarn end and is sucked into the suction pipe 46. (c) Yarn splicing section The yarn splicing section is comprised of a yarn splicing device according to the present invention, and the yarn splicing device basically includes a yarn splicing member 37, a yarn presser 38, untwisting nozzles 39 and 40, and a yarn shifting lever. 48, yarn cutting devices 41, 42, yarn clamp devices 43, 44, a first suction pipe 45 that suctions and holds the yarn end on the package side, and a second suction pipe 46 that suctions and holds the yarn end on the yarn feeding side. , a cutter 47 for cutting the yarn connected between the yarn feeding side and the package cage side, and a rotating arm 2 serving as a guide device for guiding the yarn end on the yarn feeding side described above to the yarn splicing member 37.
It consists of 9. A cylindrical yarn splicing hole 49 is provided in the center of the yarn splicing member 37.
A slit 49a suitable for inserting the yarn from the outside is formed in the tangential direction, and an ejection nozzle 49b that opens toward the center of the splicing hole 49 is formed near the contact point of the slit 49a. has been done. Untwisting nozzles 40 and 39 are provided on both sides of the yarn splicing member 37 to suction and untwist the yarn end on the yarn feeding side and the yarn end on the package side, respectively.
Yarn cutting devices 41 and 42 are provided on the outside of the
3 and 44 are provided successively. The above-mentioned jet nozzle 49b jets fluid to the untwisting nozzles 39, 40, operates the thread cutting devices 41, 42, thread shifting lever 48,
The clamping devices 43 and 44 are all operated in a predetermined order by a cam mechanism (not shown). The swing arm 29 that pulls out and guides the yarn end YU on the yarn feeding side is rotatably supported by the frame 50, and the yarn gripper 30 at the tip grips the yarn end and swings greatly in the direction of the arrow 51 as shown in FIG. When a roller provided on a part of the movable piece 32 of the yarn gripper engages with the cam plate 52 shown in FIG. It is adapted to be sucked into the shock pipe 46. The swing arm 29 is approximately L-shaped, and a gear 54 provided on a shaft 53 integral with the arm meshes with a sector gear 55, and the sector gear 55 is driven by a program cam driven by a command from the control unit, that is, a knotting command. Arm 29 rotates,
While pulling out the yarn end YT on the selection device side from the yarn supply, it moves above the yarn splicing member 37 and engages with the cam plate 52 at a position rotated approximately 180 degrees. 43b is a contact plate of the clamp device, 5
6, 57, and 58 are guide plates, respectively. In addition, in order to ensure that the yarn end YD on the side of the package cage where the yarn was cut is smoothly sucked into the first suction pipe 45, the opening of the pipe 45 should be oriented upward so as to receive the yarn end from below. is preferable, and a pair of guides 59, at a suitable distance of about 5 to 10 cm from the cutter 47 position.
It is preferable to provide between 60 and 60 degrees. In other words, if the distance between the cutter 47 and the pipe 45 is too short,
Since the suction length of the yarn end by the pipe 45 becomes shorter, the probability of failure in suction and capture of the yarn end increases, and the suction holding force after suction and capture becomes weaker, that is, the force that tensions the yarn becomes weaker, making it difficult for subsequent yarn splicing. If the length is too long, there will be a large amount of waste yarn in the portion cut by the cutter 47, which will be inconvenient, so it is better to keep it as short as possible without reducing the suction and holding force. In addition, in order for the yarn feeding side yarn end YU to be smoothly sucked into the second suction pipe 46, it is necessary to
It is preferable that the opening 6 is directed upward or sideways, and for the same reason as above, the clamping device 43 is designed so that the suction length of the yarn end is as short as possible without reducing the holding force too much. Nearby locations are preferred. In this example, the suction length of the yarn end YU is approximately 8
It is set to cm. Furthermore, the pipe 4
The opening diameter and suction pressure are set so that the suction force by the gripping piece 6 is smaller than the thread gripping force of the gripping piece 15 (in this embodiment, the suction pressure is 1000 mm water column/cm ² and the opening diameter is Approximately 8 mm) Grip the yarn end on the yarn feeding side with piece 1
5, but it is designed to prevent it from being sucked into the pipe 46. In other words, the yarn end on the package cage side is prevented from loosening in the unwinding direction by stopping the drum 10 of the winding device when splicing the yarn or by applying pressure to the brake shoe described later. ,
Since the yarn feeding side is only loosely held by the tensor 12 and the gripping piece 15, if a strong suction force is applied, the yarn feeding will be unnecessarily sucked into the suction pipe 46, which is inconvenient. The system is designed to prevent this situation from occurring. (d) Control unit Next, the control unit that controls the operation of each of the above devices will be explained. FIG. 10 shows a block diagram of the control device. That is, the control section 5 includes a program controller 61 and an oscillation section 62, and the program controller 61 includes a high-speed counter 64 that counts pulse signals from an oscillator, and a counter control section 6 that controls the counting time of the counter.
5.Furthermore, a block 66 that selects the winding time based on the counter set value at the time when the counter 64 stops, a block 67 that selects the yarn type, and a solenoid that positions the rotation plate of the yarn selection section based on the yarn type selection signal. It is composed of an output section 68, a notting command section 69, etc. The output signals from the control section select and operate the yarn type selection solenoids SOA to SOE, and the knotting circuit contact 70 operates to start knotting. The operating timing of the solenoids SOA to SOE is determined by the program cam of the thread cutting device 47 and the switch 72, which cuts the thread when winding is stopped.
The solenoid operates after the swivel plate 6 has returned to its origin after the thread has been cut. Note that one cycle of notching is set by the program cam and the switch 71, and the notting ends after one cycle, that is, one revolution of the camshaft. Furthermore, a switch 73 is provided in the cradle arm of the package cage, for example, to temporarily stop counting in the counter control section if thread breakage occurs due to some trouble during winding.
The cradle arm is provided in a cradle section so that when a thread breakage occurs, the cradle arm is raised to stop the rotation of the package. The stop switch 74 is a switch used when winding is temporarily stopped when one day's operation ends or for some reason, and signals from the winder thread breakage signal 73, stop switch 74, etc. are input to the counter control section 65. Then, the counting of the counter 64 is temporarily stopped, and the pulses counted up to the time of stopping are temporarily stored.
When turned on, the counter 64 is controlled so that the count is performed again following the count number at the time of stop. (E) Winding Unit As shown in FIGS. 1 and 3, the winding unit 4 is wound as a cone or cheese package onto a package 8 whose surface is driven by, for example, a traversing drum 10. In addition, 76 in FIG. 3 is a yarn guide, and 77 is a tension device. In addition, when winding is stopped by a command from the control section, it is preferable that the program cam controls the brake shoe and the like by a fluid cylinder until the package rotation or the drum 10 is forcibly stopped. . Next, the operation of the splicing device will be explained together with the operation of the fancy yarn manufacturing system as described above. Now, in FIG. 3, it is assumed that six types of yarns YA to YE of different colors are prepared as yarn feeders and are gripped by each yarn end gripping piece 15 of the selection device 2. In this case, the high speed counter 64 in FIG.
It is assumed that it can count from 000 to 999, and the output can be set in multiple stages.For example, if 32 points can be used, 32 types of thread can be used. Now, for example, set the counters as shown in Table 1.

[Table] In other words, the counter 64 shifts at the same time as the winder starts to start, that is, it counts and stops at a certain set time, and depending on the set value of the counter at that time, the winding time of the thread during winding and the time of the next knotting are determined. Select the yarn type and the next counter shift time. For example, in Table 1, the set value when the counter stops is 000 to 055.
In the meantime, set the relay number to HDM000, and
When HDM00 operates, the yarn type is A, the winding time is 1.5 seconds, and the next counter shift time is
Set it to 0.1 seconds. Similarly, if the value of the counter when it is stopped is between 056 and 111, the yarn type B and the winding time are set to 2.0 seconds and the time between the next counter shifts is set to 0.2 seconds. Therefore, in FIG. 11, the counter shifts at the same time as the winding start switch is turned on 78, and stops after a certain period of time. At this time, if the counter value is, for example, "85", the relay
HDM comes into play, stops after 2.0 seconds of winding, and starts thread cutting and knotting.
At the right time, solenoid SOB for thread B
is energized, and the solenoid rod STB protrudes above the board. That is, in FIG. 3, the timing at which the solenoid rod STB protrudes is at the origin position 6a shown by the two-dot chain line when the rotating plate 6 moves after the thread is cut.
When returning to the position, the solenoid rod STB protrudes,
Thereafter, the rotating plate 6 reaches the stopper STB position by rotating in the clockwise direction, the plate 6 is positioned to stop, and the gripping piece 15 that grips the end of the yarn B reaches the knotting and running position. Thereafter, the rotating arm 29 shown in FIG. 7 is operated to guide a predetermined type of yarn end on the yarn supply side to the yarn splicing member and splice it with the yarn end on the package side. That is, the yarn end YP on the package side cut by the cutter 47 in accordance with the yarn cutting command is immediately sucked and held by the immediately adjacent first suction pipe 445, and then the yarn is The free yarn end, which is clamped at a fixed distance from the tip of the yarn end and cut by the cutting device 41, is sucked into the untwisting nozzle 39 to untwist the yarn end. On the other hand, the cut yarn end YU on the yarn feeding side is switched to another yarn end YA to YF by the yarn selection device 2, and the yarn end that has been switched and brought to the yarn running position is moved to the rotating arm 29. It is guided to the position of the second suction pipe 46 by the gripper 30 as described above, and is clamped by the clamping device 43 while being sucked and held by the second suction pipe 46, and then by the cutting device 42. The cut yarn end YP, which is free on the package side, is sucked into the untwisting nozzle 40 and untwisted. Further, by the rotational movement of the yarn shifting lever 48, both ends of the untwisted yarn are pulled out from the untwisting nozzles 39, 40 and overlapped in the yarn splicing hole 49 of the yarn splicing member 37,
The ends of the threads are spliced together by the fluid ejected from the ejection nozzle 49b. When performing the above yarn splicing operation, the suction pipe 4
Since the positions, shapes, suction pressures, etc. of 5 and 46 are set as described above, the yarn end holding parts YP and YU are not sucked into the pipes 45 and 46, and are properly placed on the yarn joining member 37. As mentioned above, a certain tension force is applied. Then, the yarn spliced with a different type of yarn is again wound up by the winding device, but since the value of the above-mentioned counter when it is stopped takes a random value, the yarn type,
The winding times are also randomly set, and random winding and knotting are performed, so that, for example, fancy yarns with random combinations of colors and lengths as shown in FIG. 2 are wound. In order to make the process even more random, the selected yarn type, winding time, and counter shift time can be made even more random by using a random number table.
If the product is manufactured as a textile, the color tone may be similar. Furthermore, for example, if you want to manufacture woven or knitted fabrics based on red, you can do so by selecting a large amount of red in the variety selection. In any case, as is clear from the above description, the yarn splicing device of the present invention is a pneumatic yarn splicing device equipped with a yarn splicing member, in which suction pipes for holding yarn ends are installed before and after the splicing member. At the same time, a guide device with a clipper is provided to guide the thread end to either suction pipe, so that one of the cut thread ends is automatically sucked into one suction pipe, and the other thread end is sucked into one suction pipe. Since the yarn is guided to the other suction pipe by the gripper and suctioned, if one of the ends of the yarn is selected as the take-up package side, the take-up package starts and stops at the same time as the yarn splicing operation. The waste thread sucked into the suction pipe can be made as small as possible, and the other end of the thread is also held by a gripper and guided and sucked into the suction pipe. In this case, the end of the yarn is unnecessarily suctioned during the guiding process, but there is no such waste and the waste yarn can be made as small as possible. Furthermore, since it is a pneumatic yarn splicing device, the thickness of the seam is no different from that of a single yarn, and together with this point, it is the most suitable yarn splicing device for realizing the above-mentioned fancy yarn manufacturing device.

[Brief explanation of the drawing]

Fig. 1 is an overall configuration diagram of the funsi yarn manufacturing system, Fig. 2 is a diagram showing an example of the funsi yarn manufactured by the above system, Fig. 3 is an actual diagram similar to Fig. 1, and Fig. 4 is a diagram showing an example of the fancy yarn manufacturing system. The figure is a side view of the yarn selection section, FIG. 5 is a diagram showing the drive mechanism of the rotating plate, FIG. 6 is a front view showing the catching operation of the yarn end by grit, and FIG. 7 is a plan view of the yarn splicing section. , 8th,
Figure 9 is a cross-sectional view of Figure 7 along lines - and -, respectively.
FIG. 10 is a block diagram of the control section, and FIG. 11 is a time chart. 3... Thread splicing section, 29... Swivel arm, 30...
...Gritzpa, 37...Year splicing member, 45, 46...
... Suction pipe, 1... Yarn feeding section, 2... Yarn selection section, 4... Winding section, 47... Cutter.

Claims (1)

[Claims] 1. A yarn feeding section for selectively supplying any one type of yarn among a plurality of types of yarn, and a yarn splicing section having a pneumatic yarn splicing member that performs yarn splicing without tying a knot between the winding sections, A cutter that actively cuts the yarn continuous between the yarn feeding section and the winding section is disposed between the yarn feeding section and the yarn splicing section, and further between the cutter and the yarn splicing section and between the yarn splicing section and the winding section. A suction pipe for holding the yarn end is provided between the sections, and the yarn end on the yarn feeding side cut by the cutter or other yarn end on the yarn feeding side is
A guide device with a gripper is provided to guide the yarn end selectively supplied for the next yarn splicing to the one suction pipe, and the yarn on the winding side that is already held by the other suction pipe and continues to the package cage is provided. A yarn splicing device characterized in that the yarn end and a selected yarn feeding side yarn end guided and held by one suction pipe by the guide device are spliced at the yarn splicing section.