RU2516855C2 - Method of fabric production - Google Patents

Abstract

FIELD: textiles, paper.

SUBSTANCE: method of fabric production lies in the mutual interweaving and twining the chain and forming warp yarns with the chain and twining weft yarns, at that the forming warp yarns are located in thread guides of zigzag shape, mounted with the ability of complex motion. At the first turn of the main shaft of the machine during shedding the forming warp yarns in the form of a loop described in the configuration of the thread guide, are moved to a position between the reed and fell of the fabric. After laying the chain weft the reed moves the chain weft yarn to the beating point, simultaneously to the breast beam the fell of the fabric is moved for while the reed enters between the chain weft yarn and the fell of the fabric the thread guides can be placed with the forming warp yarns without contact with the reed. At the second turn of the main shaft of the machine the forming warp yarns encircle the chain weft yarns and located in the shed in the form of a loop. After the formation of the shed, the twining weft yarn is laid both inside the shed of the chain warp yarns and inside the loop formed by the forming yarns. After laying the twining weft yarn is attached to the edge of the fabric; simultaneously with the movement of the reed to the fell of the fabric the forming warp yarns due to movement of the thread guide encircle the chain weft yarn, go out of the shed and area of movement of the reed. At the same time fell of the fabric is returned to its original position. The reed attaches the chain and twining yarn to the fell of the fabric, and parts of the twining weft yarn in contact with the forming warp yarns encircle the chain weft yarn and pass to the front side of the fabric. When forming the background part of the fabric, the thread guide acts as a harness frame.

EFFECT: invention enables to improve the performance of the knitting loom by increasing the rate of formation of loops and working capacity of the shed.

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Description

The invention relates to weaving the textile industry and relates to a method for producing fabric with weft-leno weave.

A known method of producing fabric on a loom (US Pat. No. 2096543 Russian Federation, IPC D03D 19/00, D03D 23/00, Method for producing fabric on a weaving machine / Erokhin Yu.F., Erokhina T.Yu .; Applicant and patent holder Erokhin Yuriy Filippovich. - No. 4888602/12; claimed 07.12.1990; publ. 11/20/1997, Bulletin No. 32. - 3 pp., Ill.), Which consists in bridging the main threads in heaps and in twisting of each of the main threads with several adjacent main threads by raising and lowering the threads and moving them in opposite directions in the plane of the fabric, with the connection of each weft thread with the main My threads are carried out by weaving, and the main threads make their way into two heaps.

However, this method does not allow to obtain a weft-leno weave.

The prototype adopted the method of producing fabric with weft-leno weave, described in the patent (Pat. No. 2228977 Russian Federation, IPC D03D 13/00. Fabric with weave Shilova / Shilov. SB; Applicant and patentee Shilov Sergey Borisovich, - № 2002123403/12, declared 30.08.2002, published on 07.27.2007, Bulletin No. 21. - 3 pp .: ill.), Which consists in capturing the main thread forming the weft-leno weave in the throat with a special hook to form a loop before the last weft thread, laying the weft thread in this loop on the next revolution of the main shaft of the machine. Then the loop from the forming thread is straightened and pulled out of the throat. The forming main thread, due to the increased tension, moves the section of the irregular weft thread forward before the penultimate weft thread, while the leno thread bends around the root weft thread, forming a weft irregular weave.

However, in the described method for looping, the use of a special hook may allow a malfunction in the fabric pattern due to the unstable (constantly changing) tension of the base occurring in the gas station due to the cyclic operation of the machine.

The technical result of the claimed invention is to increase the productivity of the machine by increasing the speed of loop formation and the efficiency of the pharynx.

The specified technical result is achieved by the fact that in the method of obtaining fabric, which consists in interweaving and interlacing the root and forming warp threads with the warp and transverse weft threads, according to the invention, the warp forming threads are arranged in zigzag thread guides installed with a swinging and reciprocating movements, during the first revolution of the main shaft of the machine during shedding, the warp-forming threads in the form of a loop are moved to the position between the reed and the edge th tissue, with one hinge part follows the shape of the yarn, and the other represents a straight section forming warp yarn from the yarn to the fabric edge; after laying the root weft, the reed moves the root weft to the point of surf, simultaneously with the reed towards the chest of the machine, the edge of the fabric is moved to a distance necessary and sufficient so that when the reed reaches the extreme point of its movement between the root weft and the edge of the fabric thread guides with forming warp threads could be located without contact with the reed; at the second revolution of the main shaft of the machine, the warp forming threads, around the yarn guide path, bend around the root weft and are located in the throat in the form of a loop corresponding to the shape of the pharynx; formed by forming threads, after laying the leno weft thread is nailed to the edge of the fabric; Simultaneously with the movement of the reed to the edge of the fabric, the warp weaving around the root weft thread due to the trajectory of the thread guide moves and the leno weft thread moves to the edge of the fabric and leaves the throat and the reed movement area, at the same time the edge of the fabric is returned to its original position, the reed nails the root and leno thread to the edge of the fabric, and the sections of the leno weft thread in contact with the forming main threads round the root weft and go to the front of the fabric; when forming the background section of the fabric, the yarn guide serves as a heald frame, and the loom works in the traditional way.

Improving the productivity of the machine is achieved due to the rigid design of the yarn feeders allowing you to work with greater speed due to the constant location of the forming thread inscribed in the configuration of the yarn guide in the form of a loop, compared with the flexible design of the hooks in the prototype. The efficiency of the pharynx is increased by stiffening the loop and matching the loop of the forming threads with the shape of the pharynx.

Figure 1 presents the moment of formation of the background tissue, where the forming main thread is in the upper branch of the pharynx; figure 2 is the same as where the forming main thread is in the lower branch of the throat; figure 3 presents the beginning of the formation of weft-leno weave, where the forming main thread is removed from the zone of tissue formation; figure 4 shows the second phase of the formation of weft leno weave - the moment of laying leno duck; figure 5 presents the last phase of the formation of weft-leno weave; figure 6 a) shows a simple weft leno weave warp and weft obtained by the claimed method; figure 6 b) shows a more rigid weft-leno weave; 7 shows a photo of the fabric obtained by the claimed method.

For the practical implementation of the method, the warp-forming yarns 1 located on the second Navoi through a system of guides and compensators (not shown) are tucked into yarn guides 2 in a zigzag shape, mounted with the possibility of rocking and reciprocating movement. To enable complex movement of the yarn feeders 2, an additional tool is installed on the machine frame. Options for additional tools moving yarn feeders 2, and the forms of their execution, may be as many as the types of looms. For example, for STB machines, an additional tool is the drive of yarn feeders with cams and counter-cams associated with levers and sliders. In this case, an additional tool is placed on both sides of the machine. First, a background section of the fabric is produced, while the main 3, weft 4 threads and the forming main threads 1 are intertwined as a whole. When this yarn feeders 2 perform the function of remise. The positions of the yarn feeders 2 at the time of laying the root weft 4 are shown in FIGS. 1 and 2. An exact leno weave is formed in two turns of the main shaft of the machine. During the first rotation of the main shaft of the machine during yawning from the main warp threads 3, the forming main threads 1 in the form of a loop are moved to the position between the byrd 5 and the edge of the fabric 6, while one part of the loop repeats the shape of the thread guide 2, and the other is a straight section forming the main threads 1 from the yarn guide 2 to the edge of the fabric. After laying the root weft 4, the reed 5 moves the root weft 4 to the point of surf (to the extreme point of its movement), at the same time as the reed 5 towards the chest of the machine, the edge of the fabric 6 is also moved to a distance necessary and sufficient so that with income the reed to the extreme point of its movement between the root weft thread 4 and the edge of the fabric 6 could be located yarn guide 2 with forming warp threads 1 without contact with the reed. This position is presented in figure 3. In Fig.1 and 2, the distance from the center of rotation of the reed to the edge of the fabric is indicated as L, in Fig.3 and Fig.4 as L1.

L1-L = Δ, where Δ is the required distance of movement of the edge of the fabric in order to avoid contact of the yarn feeders with the reed.

During the second revolution of the main shaft of the machine during shedding, the main yarns 1 forming due to the path of the yarn guide 2 go around the root weft thread 4 and are located in the throat in the shape of a loop corresponding to the shape of the throat. After the formation of the pharynx, a leno weft thread 7 is laid both inside the pharynx from the main warp threads 3 and inside the loop formed by the forming threads 1, this position is shown in Fig. 4. After laying, the irregular weft thread 7 is nailed to the edge of the fabric 6. Simultaneously with the movement of the reed 5 to the edge of the fabric, the main threads 1 forming along the trajectory of the thread guide 2 go around the root weft thread 4, the leno weft thread 7 is moved to the edge of the fabric 6 and leaves the throat and the movement zone of the reed 5, at the same time, the edge of the fabric 6 is returned to its original position. Birdo 5 nails the root 4 and leno thread 7 to the edge of the fabric 6. The sections of the leno weft thread 7 in contact with the forming main threads 1 bend around the root weft thread 4 and go to the front side of the fabric. This position is shown in FIG.

This weft leno weave is practically non-deformable, i.e. it is difficult to move the wefts relative to the warp even with a small linear density of the fabric. But if you need a more rigid weave, as shown in Fig.6 b), then when implementing the proposed method, it is necessary to lay in two different throats from the root threads in the same loop from the forming threads two leno weft threads.

Claims (1)

The method of obtaining fabric, which consists in interweaving and intertwining the root and forming warp threads with the warp and transverse weft threads, characterized in that the warp forming threads are arranged in zigzag thread guides installed with the possibility of rocking and reciprocating movement, during the first revolution of the main shaft during yaw formation, the warp-forming yarns in the form of a loop are moved to the position between the byrd and the edge of the fabric, while one part of the loop follows the shape of the thread a driver, and the other represents a straight section forming warp yarn from the yarn to the fabric edge; after laying the root weft, the reed moves the root weft to the point of surf, at the same time as the reed towards the chest of the machine, the edge of the fabric is moved to a distance necessary and sufficient so that when the reed reaches the extreme point of its movement between the root weft and the edge of the fabric thread guides with forming warp threads to be located without contact with the reed; at the second revolution of the main shaft of the machine, the warp forming threads, around the yarn guide path, bend around the root weft and are located in the throat in the form of a loop corresponding to the shape of the pharynx; formed by forming threads, after laying the leno weft thread is nailed to the edge of the fabric; Simultaneously with the movement of the reed to the edge of the fabric, the main threads forming around the root weft thread due to the path of the yarn guide move around the weft thread to the edge of the fabric and exit the throat and the reed movement area, at the same time the edge of the fabric is returned to its original position, the reed is nailed the root and leno thread to the edge of the fabric, and the sections of the leno weft thread in contact with the forming main threads round the root weft and go to the front of the fabric; when forming the background section of the fabric, the yarn guide serves as a heald frame, and the loom works in the traditional way.

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