JPH02293443A - Development of pattern by controlling feed of warp and controlling device therefor - Google Patents

Abstract

PURPOSE:To easily carry out the patterning of a plain twill fabric by controlling the winding speed of a warp group (woven cloth) or the feed speed such as let-off speed of a woven cloth, thereby controlling the count of wefts. CONSTITUTION:In a follow-up automatic control winding process following the let-off speed corresponding to the winding speed, the count of wefts is controlled according to the warp feeding speed while keeping the warp tension at a prescribed level or periodically varying the warp tension within an arbitrary range to effect the development of pattern. The patterning of a cotton twill fabric such as jeans can be carried out without using a complicate opening apparatus or jacquard opening apparatus.

Description

Detailed Description of the Invention "Field of Industrial Application" The present invention adjusts and subtracts the weft driving density by controlling the rope cloth feed speed such as winding or unwinding of light yarn groups (cotton cloth), and changes the weft density. This article relates to the method of producing woven patterns and its control device. ``Prior art and its problems'' Conventional methods for producing rope patterns include a method in which a weave pattern is generated by controlling the shedding of a group of warp threads using a heddle, and a method in which colored pattern weaving is performed. One such method requires complicated shedding devices, jacquard shedding devices, etc., which poses problems in terms of equipment and production costs, and Ike's method uses yarn-dyed light yarns and wefts. Therefore, the necessary expenses for dyeing equipment and yarn management are required, which poses problems in terms of equipment and production costs. by the way. Cotton twill fabrics, which are similar to plain weave like jeans, cannot be woven with a loose weave due to their weaving structure, so they have traditionally been made with colored patterns. but. Even in cotton twill fabrics that are similar to hand-woven fabrics, such as jeans, there is a strong demand for creating wrinkled patterns by varying the weft weaving density. Problems to be Solved by the Present Invention and 1,000 Steps In view of the problems with the pattern forming devices in the prior art described above, the present invention has developed a method for forming patterns on cotton twill fabrics such as jeans using a complicated shedding device, a jacquard shedding device, etc. In order to weave a variety of wrinkle patterns without relying on We succeeded in providing a method and a control device for producing a woven pattern by changing the weft insertion density by controlling the woven fabric feed speed such as winding or unwinding of the warp group (JLI fabric). The specific means is (l) a patterning method in which the weft thread density is controlled by controlling the woven fabric feeding speed such as winding or unwinding of the warp group (woven fabric). (2) Consists of a delivery device that controls delivery based on warp tension based on warp tension signals. A pattern control device that arbitrarily changes the warp tension, controls the warp feed speed, and creates patterns by changing the weft driving density. (3) Consisting of a winding device that controls winding based on warp tension based on a warp tension signal, and a delivery device that controls delivery following this winding speed, the warp feed speed can be adjusted while arbitrarily changing the warp tension. A pattern control device that controls patterns by changing the weft thread density. (4) Consisting of a winding device that controls winding at an arbitrary tension based on a warp tension signal, and a sending device that controls sending out following this winding speed, it irregularly controls the warp tension and feeds the warp. A pattern control device that uses warp feed control to irregularly control the speed and produce random wrinkle patterns due to irregular changes in weft thread density. "Example" Fig. 1 is an implementation diagram showing an embodiment of the weaving pattern production method using warp feed control of the present invention and its control device, and Fig. 2 is an implementation diagram showing an embodiment of the weave pattern production method using warp feed control of the present invention and its control device. FIG. 3 is a diagram showing the relationship between warp thread feeding and weft driving density, and FIG. 4 is a time chart of warp thread feeding control based on warp tension detection. Figure 5 is a pattern diagram showing random weaving patterns and their combinations. In FIG. 1, the warp group 2 wound around the warp roller 1 is inserted into the open warp by passing through a heald 5 and a reed 6 via a guide roller 3 and a tension roller 4, and beating the weft to form this fabric. Let B be woven fabric 7. The woven fabric 7 is wound from the breast beam 8 to the cross roller l1 via the surf roller 9 and the guide roller 10. The sending device 100 for the warp roller l reduces the rotational torque of the drive motor M through a worm 13, a worm wheel 14, and a gear 15, and a gear l2 directly connected to the warp roller 1.
The controller C automatically controls the rotational speed of the drive motor M at a predetermined speed to send out the warp group 2 under the tension set by the tension setting device S. The rotation speed of the drive motor M is calculated by the controller C based on the magnitude of the tension signal from the warp tension load sensor LS according to the present invention and the adjustment settings of the feed speed adjustment section and the warp tension adjustment section of the setting device S. The rotation speed of the drive motor M is automatically controlled by feeding back the rotation speed of the drive motor M using the encoder E in order to send out the warp group 2 at a predetermined speed. On the other hand, the cross roller ti winding device 200 has a known configuration. The fabric is wound up at the speed of the warp feeding device that is synchronized with the winding speed. still. The breast beam 8 is strung across a plurality of support struts 18, and each base is fixed to a support shaft 19 via a boss 20. A configuration in which the displacement of the breast beam due to the cotton fabric tension applied to the breast beam 8 is detected by a load sensor on the detection side 19a attached to the boss 20 of the support shaft l9 where an average displacement of the entire breast beam occurs. It becomes. Therefore, the drive motor M is controlled based on the magnitude of the tension signal from the warp tension load sensor LS and the setting SF.
The controller C sends out the warp group 2 at a predetermined speed based on the result of calculation processing based on the adjustment settings of the feed speed adjustment section and the warp tension adjustment section of the JS, and automatically controls the rotation speed of the drive motor M by feeding it back with the encoder E. .

Here, the relationship between the warp feed amount and the weft insertion amount will be explained with reference to FIG. If warp group 2 is sent out at a predetermined speed and is periodically increased or decreased regardless of the rotational speed of machine m, when the warp feed speed decreases, the number of weft insertions per unit warp length increases, and the weft density increases. ．． On the other hand, when the warp feed speed increases, the number of weft insertions per unit length of light yarn decreases, and the weft density decreases. Like this. The weft driving density can be controlled according to the warp feed speed, allowing you to create rope patterns as you wish. Incidentally, the periodic feed rate control of the warp threads is carried out by electrical control of known means or by a software program of the CPU. Next, as shown in FIG. 2, in the winding device 200 of the cross-mouth roller l1, a servo ambule SA that receives a sharpening speed command from the main controller MC is rotationally driven by, for example, an AC servo motor 8M. In addition, the warp tension load sensor LS and the rotation angle detection sensor S1 of the surf roller 9 are input to the main controller MC. The load sensor LS detects the tension fluctuation of the light yarn, and the rotation angle detection sensor S! detects the driving timing of the loom. Note that the rotation angle detection sensor S1 is composed of, for example, an absolute encoder. Therefore, the main controller MO
teeth. The rotation angle detection sensor S1 detects the driving timing of the loom and regulates the detection timing of the load sensor LS. Due to this. As shown in Fig. 4, the rotation angle detection sensor St detects the beat-up timing of the reed 6, and the warp tension of the setter S is determined based on the warp tension data at the detection timing of the load sensor L8, which excludes this timing. and how to maintain the warp feed speed. Main controller MC is AC
The servo motor is operated at a predetermined drive speed, and the cross roller 1l winds up the fabric in a circular motion. The main controller MC also sends winding information to the AC controller C for the motor of the warp feeding device 100. Automatically controls the feed speed to match the winding speed.
This means that the warp winding diameter of the warp beam l is calculated from the relational expression between the winding amount and the winding amount, making it possible to optimally control the correlation between red yarn feeding and winding. Therefore, in the winding method that automatically controls and follows the feed speed corresponding to the winding speed, the warp tension can be maintained at a predetermined chain or periodically varied to an arbitrary tension. ! The weft insertion density can be adjusted according to the yarn feed speed, allowing you to create the desired weave pattern. Figure 5 shows that by randomly changing the warp feed amount, it is possible to create unique patterns (wrinkles). It shows examples of random weaving patterns and their combinations. The weaving patterns of Fl are individual rope patterns (A), (mouth), (C).
2) It creates a flow of weaving patterns by changing the combination of... The weaving pattern of F2 is each different rope pattern (A). To. It uses random numbers from a computer to create a flow of weaving patterns by changing the pattern. The rope pattern F3 creates a flowing rope pattern by combining the above-mentioned weave pattern Fl and F2. The above random weaving pattern is controlled by the main controller MC through computer programming. By randomly changing the amount of light yarn fed, it is possible to create a unique pattern.

It goes without saying that the present invention is not limited to the above-mentioned embodiments, but can be modified within the scope of the invention. "Effect of the invention" According to the present invention. The weft driving density is controlled by controlling the rope feed speed such as winding or unwinding of the warp group (woven fabric) to produce a rope pattern, but when the winding speed of the woven fabric is high, the weft driving density decreases. However, when the rope cloth is slowly wound, the weft thread density returns to normal or high, making it possible to produce a woven rope with a pattern, and making it possible to easily create a pattern on a plain twill fabric. Furthermore, there is a difference between a winding device that controls the winding based on the warp tension based on the light yarn tension signal, or a winding device that controls the winding at an arbitrary tension based on the light yarn tension signal, and a feeding device that controls the feeding according to the winding speed. Since the warp tension is controlled and the warp feed speed is controlled and the pattern is created by changing the weft driving density, the warp feed can be controlled by accurately detecting the warp tension of the weaving section, which directly affects the weaving section. This has the effect of producing high-quality patterned weaving in twill fabrics. Yet again. By randomly changing the warp feed amount, unique patterns can be created, and random patterns can be freely woven using computer data processing.

[Brief explanation of the drawing]

FIG. 1 is an implementation diagram showing an embodiment of the weave pattern producing method using warp feed control of the present invention and its control device, and FIG. 2 shows another embodiment using warp feed control of a winding device and a feeding device. Figure 3 is a diagram showing the relationship between warp feed and weft driving density, Figure 4 is a time chart of warp feed control based on detection of warp tension, and Figure 5 is a pattern showing random weaving patterns and their combinations. This is a diagram. l... warp roller, 2... warp group. 7... Woven fabric, 8... Breast beam, l8... Pillar, 19...
・Support shaft, 20...Boss, LS...Load sensor, B
... Before WR, 100 ... Warp sending device, 200 ...
・Warp winding device. C...Control unit. M
C... Main controller S... Setting ISA...
・Servo amplifier sM... Servo motor. 81...
Angle sensor, Fl, F2, F3... Woven pattern. (
(b) (Part) (c). (ii)... Origami pattern. Applicant: Katsuzawa Electronic Technology Co., Ltd. Daiichi Medical Co., Ltd. (Method of writing amendments to F7-dO legal proceedings) 1. Display of the case 1999 patent Application No. 113486 2. Name of the invention Pattern creation method using warp feed control and its control device 3. Relationship with the case of the person making the amendment Patent applicant address 2-26-7 Aoi Higashi, Hamamatsu City, Shizuoka Prefecture Name
Akio Katsuzawa, Representative of Katsuzawa Electronic Technology Co., Ltd. 4. Date of amendment order: August 29, 1999 5. Drawings subject to correction

Claims (4)

[Claims] (1) A pattern production method using warp feed control, which is characterized in that the pattern is produced by controlling the weft thread driving density by controlling the fabric feed speed such as winding or feeding of the warp group (woven fabric). (2) Consists of a sending device that can control feeding at an arbitrary tension based on a warp tension signal, and controls the warp tension to a predetermined value or arbitrary tension, and also controls the warp feeding speed to regularly change the weft loading density. A pattern output control device using warp feed control, which is characterized in that a wrinkle pattern is generated by the warp feed control. (3) Consisting of a winding device that controls winding at an arbitrary tension based on a warp tension signal, and a delivery device that controls delivery following this winding speed, the warp tension is controlled to be adjusted to a predetermined value or to an arbitrary tension, and A pattern output control device using warp feed control, characterized in that the warp feed speed is controlled to increase or decrease the warp yarn feed speed to produce wrinkled patterns by regular changes in the weft insertion density. (4) Consisting of a winding device that controls winding at an arbitrary tension based on a warp tension signal, and a sending device that controls sending out following this winding speed, it irregularly controls the warp tension and feeds the warp. A pattern output control device using warp feed control, characterized in that the speed is irregularly controlled to produce a random wrinkled pattern due to irregular changes in the weft insertion density.