KR20010043351A - Weaving machine and method for manufacturing fabrics with pattern-forming weft threads such as kelim or gobelin fabrics - Google Patents

Abstract

The weaving machine according to the present invention is an opening-forming device provided to form an opening between a part of the warp yarns 16 provided in the weaving machine, and a selection device 22 provided for selecting one weft yarn 34 from a plurality of different weft yarns. ), Consisting of a weft mechanism (17-21, 38, 39, 42) provided in each case to insert and cut the selected weft 34 of the required length into the opening, whereby the fabric 7 is formed, where only the weft A plurality of wefts may be provided in line at the selection device 22, which extends up against a portion of the fabric in width and is woven to form a pattern by the warp yarns 6, wherein the selection device 22 comprises at least one rotating element ( 25-28), wherein the rotating element moves the row to select one weft by rotation. The invention also relates to a method for making a fabric from a pattern-forming weft yarn in a weaving machine, such as, for example, Kelim or Gobelin fabrics, wherein a plurality of weft yarns are arranged in line on the selection device 22. 28, the rotating element is provided to move the row to select one weft 34 through rotation.

Description

WEAVING MACHINE AND METHOD FOR MANUFACTURING FABRICS WITH PATTERN-FORMING WEFT THREADS SUCH AS KELIM OR GOBELIN FABRICS}

Kelim and Gobelin fabrics are composed of warp and weft. Wefts are interwoven by the warp yarns to have a continuous portion along the top of the fabric covering the warp yarns. The spines of various wefts form a pattern. The fabric features a different color gamut of the pattern in one same weft line formed by each weft portion (having a different color) extending over a portion of the fabric width. And for these fabrics (especially for Gobelin fabrics), the pattern is usually made up of several colors.

Belgian patent 1004414A3 (patent application 9000586) describes a weaving machine having the features mentioned in the first paragraph of the specification.

Known weaving machine selection devices include color gratings where the various wefts may be provided in several rows adjacent to each other. The color grating moves in the warp direction and the weft direction to move the particular weft to the selected position in every operating cycle so that it can be transferred into the opening by rapier.

Since the color grating must be able to move in two different, mutually perpendicular directions, two drive devices must be provided. This selector works somewhat slowly, is complex and uneconomical.

The present invention includes an opening-forming device to form an opening between some warp yarns provided in the weaving machine in a continuous operating cycle, and includes a selection device provided to select one weft yarn from a plurality of different weft yarns in every operating cycle. Relating to a weaving machine, in which in each case a weft mechanism is provided that cuts and inserts the selected weft of the desired length into the opening, wherein only the weft extends over a portion of the fabric width and weaves to form a pattern by the warp; do.

The invention will be described in more detail in the following detailed description of the weaving machine and method according to the invention. The features of the invention described herein are exemplary only and should not be understood as limiting the scope of protection claimed for the invention in the claims.

Reference is made to the accompanying drawings in the specification herein.

1 is a schematic diagram showing a fixed weaving body of a weaving bed and a weaving machine that can move back and forth;

2 illustrates the principle by the side of a variant of the woven bed that can move back and forth.

3 is a schematic diagram showing a weaving sley capable of setting the position of the weaving machine;

4 to 12 are schematic views showing the weaving slay in the continuous position during the operating period of the weaving machine.

It is an object of the present invention to provide a weaving machine with a selection device which does not have the above mentioned disadvantages.

This object is achieved in accordance with the invention by a weaving machine having the features mentioned in the first paragraph of the specification, so that a plurality of wefts can be provided in a row in the selection device, the selection device being rotated to select the weft yarns by rotation. At least one rotating element provided to move the.

Only one drive is sufficient to rotate the rotating element to the position where one of the plurality of wefts is selected in the selection device. Rotational drives, for example electric motors, operate faster, are simpler, and are more economical than two linearly driven drives of known weaving machines.

Another aspect of the invention relates to a method for making a fabric from a pattern-forming weft in a weaving machine, such as a Kelim or Gobelin fabric, so that in a continuous operating cycle, the opening-forming device is used to open an opening between a portion of the warp provided in the weaving machine. It is operated to form, and in every operating cycle the selection device is operated to select one weft yarn from a plurality of different weft yarns, and in every operating cycle the weft mechanism is operated to cut and insert the required length of the selected weft yarn into the opening.

The method known from the above Belgian patent has the characteristics mentioned in the preceding paragraph of this specification, but has the disadvantage that two different drive devices must be operated in order to select one weft.

It is an object of the present invention to provide a method that simplifies the operation for selecting one weft.

This object is achieved by using the method according to the invention, so that various wefts are provided in line in one selection device with at least one rotating element provided to move the row to select one weft through rotation.

According to the aforementioned method for selecting one weft, only one rotational drive needs to be operated. This is considerably simpler than the operation of two drive units moving in a straight line.

The invention also relates to fabrics produced according to the process described above, in particular to Kelim and Gobelin fabrics.

In a preferred embodiment of the weaving machine according to the invention a rotating element is provided to move the weft rows along the closed path. Thus, long rows of wefts can be provided-these rows form a circle-all the wefts are quickly and efficiently transferred to one selected location, and the space occupied by this row is limited. Another advantage of the present embodiments is that the rotating elements for each selection can be rotated along the same direction of rotation. By rotating the rotating element along one or another rotational direction, the operating speed can be increased, regardless of the position of the weft yarn selected for the selected position.

Weft rows are provided such that each row can be supported by at least one circulation carrier, which can be rotated by a rotating element.

The weft mechanism and the selection device of the weaving machine according to the invention are provided in one and the same positioning device that can move in the weft direction. Therefore, the position of the selection device and the weft mechanism can be determined by the operation of the drive device.

In a preferred embodiment of the weaving machine, the weft mechanism comprises a gripping device movable in the weft direction with respect to the positioning device described above, carrying the weft selected by the selection device, and by motion relative to the positioning device. It is provided to be movable into the opening.

The weft mechanism includes a cutting device equipped to cut through the weft thread moved into the opening between the opening and the selection device.

An embodiment of a weaving machine according to the invention comprises a weaving body provided to hold in a fixed position during weaving, the weaving machine from the fabric to strike one or a plurality of wefts over the preformed fabric part. It is provided with a structure that moves back and forth in the warp direction to move the last fabric formed with the warp stretched through.

Hitting one or more wefts on preformed fabrics in the method according to the invention, by moving the last fabric part towards the body with the warp extending from the fabric through the body of the weaving machine while the body is stationary. Is carried out.

In a weaving machine in which the body performs back and forth movement to strike the weft, the space adjacent to the body must be kept open to allow the movement of the body. The fact that the weaving machine according to the invention has a body which can be held in a fixed position during weaving makes it possible to place the weft instrument and the selection device in an ideal position adjacent to the body.

The opening-forming device, selection device and weft device according to another preferred embodiment of the weaving machine allows the opening to be automatically formed between the specific warp yarns in every operating cycle, the particular weft is selected and the The warp, weft and this length are determined in each case so that a certain length is moved into the opening and the weft is interwoven with the warp and forms a predetermined pattern in the fabric.

When carrying out the above-described method according to the invention, the aperture-forming device, the selection device and the weft device are operated as mentioned in the preceding paragraph.

The weaving machine has a data processing unit and an input device for inputting pattern data into a unit for determining a pattern to be formed, the data processing unit operating from the pattern data necessary for operating the opening-forming apparatus, the selection apparatus and the weft mechanism. It is provided to determine data or operational signals.

The data processing unit is a computer into which pattern data can be input by inputting an image of a pattern formed through a scanner connected to a computer. The operating data required to make the fabric in a pattern on the weaving machine is obtained simply and quickly.

When using the method according to the invention a weaving machine with a data processing unit, such as a computer, is used, wherein pattern data for determining a pattern is input to the unit by a scanner, which unit opens the aperture-forming device, the selection device and the weft device. It is programmed to determine the operating data or operating signal from the pattern data required to operate.

In handmade Kelim and Gobelin fabrics, all wefts are interwoven together to form a pattern from one end extending along the bottom of the fabric by a plurality of consecutive warps arranged adjacent to each other, and after weaving around the last warp Returning to one warp, the other end of the weft extends adjacent the first end along the bottom surface of the fabric. Thus, a gap can be seen between the pattern-forming portions of adjacent wefts interwoven in one same weft line. This is considered a typical feature of handmade Kelim and Gobelin fabrics.

In order to achieve the typical properties of fabrics produced by using the method according to the invention, all wefts are interwoven on both sides of the pattern-forming part by warps provided along the back side of the fabric.

The weaving machine according to the invention comprises a chassis having two vertical side plates, to which a plurality of reinforcing ribs are fitted. The chassis is a movable back and forth metal structure, called a woven bed, consisting of a steel part and a seat part, supporting three rollers 3, 4, and 5 extending along the transverse direction of the chassis. ) And the fixed weaving body (1). On one side of the weaving body 1, there is provided a first (3) and a second (4) roller on the front side, which serves to loosen the warp yarn 6, the tensioned yarn during weaving. The roller 5 provided on the other side of the weaving body 1, ie the rear, serves to wind the fabric formed during the operation of the weaving machine. The shaft 8 of each roller 3, 4, 5 is adjacent to each end mounted to the bearing in a bearing house 9 attached to the structure 2.

The woven bed 2 can be moved back and forth at right angles to the weaving body 1 by means of a cam driven by an electric motor having a reduction gear (not shown). In each case the electric motor is operated to move the weaving bed forward from the starting position after one or more wefts have been inserted into each opening (the side on which the roller 3 for the warp is provided is considered as the front of the weaving machine) Then move back again, returning to the starting position. While moving the woven bed 2 forward, the warp, tensioning yarn and preformed fabric move forward and the weft is held by the woven body 1 so that it moves back to fit against the fabric of the preformed fabric. . This is called the weft beat-up.

Since the weaving body 1 is a fixing part of the weaving machine, the space behind the weaving body 1 can be used for other parts, as shown below.

In another embodiment, the roller 3 'provided for unwinding the warp 6, the roller provided for unwinding the tensioned thread and the roller 5' provided for winding the fabric 7 are permanently attached and movable The rollers 3, 4, 5 provided in the woven bed 2 serve to guide the woven body 1 adjacent to the woven body 7, the stretched yarn and the warp yarn 6. The principle of this embodiment is shown in FIG. 2 (the roller 4 for releasing the tensioning thread and the roller 4 for guiding the tensioning thread are not shown herein). The rollers indicated by reference numerals 10 and 11 in FIG. 2 are guide rollers fixed for the warp yarn 6, the preformed fabric 7.

In such a weaving machine, a bitup of the weft occurs by moving the warp yarn 6 extending back and forth and the fabric part formed at the end of the weaving body 1 moving toward the fabric.

The weaving machine is arranged movably on the rail 13 and includes a weaving slay 12 extending behind the weaving body 1 with respect to the full width of the weaving machine, parallel to the weaving body 1. The woven sled 12 is provided with a toothed wheel 14 which engages with a toothed rack 15 extending parallel to the rail 12 over the entire width of the weaving machine. By rotating the toothed wheels 15 by means of the electric motor 16 the position of the woven slay 12 can be determined. The operation of this motor 16 is performed by a computer.

Weaving slay 12 is provided with a rapier 12 which can move on a guide rail 18 provided in woven slay 12. The rapier 17 can be moved by means of an electric motor 19, which drives a toothed wheel that engages a toothed rack not shown in FIG. 3. This motor 19 is operated by a computer. At the end the rapier 17 comprises a gripping mechanism 21 which can be opened and closed by a small pneumatic cylinder 42 (shown in FIGS. 4-11 but not shown in FIG. 3).

The selection drum 22 is also provided in the woven slae 12. It comprises two vertical rotational axes 23, 24 arranged next to each other. Two toothed wheels 25, 26 on each shaft; (27) and (28) are provided on two stacked horizontal surfaces. The upper circulation chain 29 moves over the two upper toothed wheels 25, 27, and the lower circulation chain 30 moves on the two lower toothed wheels 26, 28. These chains 29, 30 carry a series of thread holders 31, which form a line extending vertically adjacent and extending over the entire rotation of the chain. Each thread holder 31 is connected to two chains 29 and 30. The upper chain 29 rotates by driving one of the upper toothed wheels 25, 27 with an electric motor 32 provided for the aforementioned purpose in the woven sled 12. The thread holder 31 is supported by the upper chain 29, which in turn causes the lower chain 30 to rotate. Thus, a row of yarn holders 31 forming a circle rotates.

Each yarn holder 31 includes two wefts 34 and a vertical guide plate 33 along which wefts 34 extend adjacent to one another in the vertical direction. For each weft 34 the thread holder 31 comprises a thread tensioning device 35, which spring element is provided to exert downward tension on the weft 34 extending along the guide plate 35. (36). At the bottom, the thread holder 31 comprises two vertical guide tubes 37. The weft yarn 34 provided in the thread holder has an end that passes through each guide tube 37 and protrudes below the guide tube 37.

In order to select one weft 34, the selection drum 22 rotates until the end which protrudes from the guide tube 37 to the selection position and the weft 34 come into contact with each other. This selection position is a position where the seal end can be gripped by the rape 17. The electric motor 32 for rotating the selection drum 22 is operated by a computer.

The weaving sled 12 is provided with a cutting mechanism 38, which can be operated by a small pneumatic cylinder 39. This cylinder 39 is also operated by a computer.

Weaving machines include known jacquard mechanisms in each case to form the necessary openings between the warp portions during progressively continuous operation. The jacquard mechanism is operated by a computer.

In every operating cycle, different parts of the pattern-forming weft are interwoven during fabric making in the weaving machine. The color, length and weaving position of the wefts should correspond in each case to the pattern made visible on the fabric. The operating data needed to achieve this for all operating cycles is the jacquard machine, the positioning motor 16 of the weaving sleigh 12, the motor 19 of the rapier, the motor 32 of the selection drum 22, the gripper. It should be possible to utilize the cylinder 42 of the instrument 21, the cylinder 38 of the cutting instrument 38, the electric motor of the weaving bed and the electric motor of the warp rollers and the fabric rollers.

The driving means of the above-mentioned weaving machine is connected to the computer which can receive data from a scanner. The image of the pattern obtained from the fabric is input through a scanner and the pattern data thus obtained is stored in the memory. The computer is programmed to automatically process the pattern data with the operating data and operating signals necessary to operate all the drive means in every operating cycle at the right moment in a suitable manner.

Continuous operation stages of the weaving machine during one operating cycle are shown in FIGS. 4 to 11.

The positioning motor 16 of the first weaving slay 12 is operated to position the weaving slay (Fig. 4) so that the warp yarn 6, in which an opening must be formed, is located between the cutting mechanism 38 and the gripping mechanism 21. Is within the opening 43 (shown in FIG. 4) of the. Thereafter, the electric motor 32 of the selection drum 22 is operated to move the necessary weft to the selection position (FIG. 5).

Thereafter or at the same time the jacquard mechanism is operated to form the required opening in a known manner. The electric motor 19 of the rapier 17 is operated to move into the opening until the end of the selected weft 34 protruding from the thread holder 31 is disposed between the two parts of the open gripping mechanism 21. (FIG. 6). The pneumatic cylinder 42 of the rapier 17 is operated to close the gripping mechanism 21 (FIG. 7). The electric motor 19 of the rape 17 is operated to pull the rape 17 out of the opening. In addition, the weft yarn 34, which is fastened by the gripping mechanism 21, is pulled out of the thread supply portion (not shown) through the thread holder 31 of the selection drum 22 (Fig. 8). The rapier motor 19 is operated to move the rape 17 away from the selection drum 22 until the weft yarn 34 of the required length is pulled out of the selection drum 22.

The pneumatic cylinder 39 of the cutting mechanism 38 is operated continuously (FIG. 9) so as to cut through the weft adjacent the thread holder 31 (FIG. 9), and the gripping mechanism 21 is opened by operating the pneumatic cylinder 42. 10, the jacquard mechanism is operated to close the opening (FIG. 11).

The electric motor of the woven bed 2 is operated such that the weaving bed can perform the back and forth motion to beat-up the inserted weft 34. The back and forth movement is performed several times to obtain a good quality fabric.

Drives of the rollers 5, 5 '-cloth rollers, to which the fabric 7 winds up when all the wefts 34 of a particular weft line are inserted, have a weft 34 on the next weft line. It is operated to pull the fabric back so that it can be inserted. Rollers 3, 3 'having tensioned yarns and warp yarns 6; The drive device of (4) should be operated to loosen the thread of the corresponding length.

Warp (6) acting as a pattern-forming weaving of weft 34 and forming upper layer 40 to obtain a general gap of Kelim and Gobelin fabrics between neighboring wefts of the weft line and to weave the wefts nicely. Below, a bottom layer of warp 41 is provided (FIG. 12), and each weft 34 is provided with a bottom layer (on both sides of the portion woven to form a shape by the warp 6 of the top layer 40). By the warp yarn 6 of 41), a non-pattern forming woven is made for a predetermined length.

The shape-forming woven portion of the weft 34 alternately extends above and below the continuous warp 6 in the top layer 40. The more wefts 34 weave-form for shorter lengths by the warp of the top layer 40, the longer the wefts (on both sides of the shape-forming part) become warp yarns 6 of the bottom layer 41. Can be woven into the fabric to achieve proper weaving. Some of the weft yarns 34 woven into the bottom layer of the warp yarns 41 alternately extend above and below the continuous warp yarns 6 of the bottom layer 41.

It can be processed for each weaving position when programming the computer to process the pattern data into actuation data or actuation signals. The weaving machine may have a plurality of weaving slaes 12. In this case, one weaving position can be subdivided into areas of equal number of usable weaving slays and the pattern data for each area can be processed as separate operating data or operating signals.

Claims (14)

An opening-forming apparatus provided to form an opening between the warp yarns 6 provided to the weaving machine in a continuous operating cycle, a selection device 22 provided to select one weft 34 from a plurality of different weft yarns in every operating cycle, and , In each case consisting of a weft mechanism 17-21, 38, 39, 42 which is adapted to insert and cut the required length of the selected weft 34 into the opening so that the fabric 7 is formed where the weft is a fabric In a weaving machine extending about a portion of the width and being woven to form a pattern with the warp yarns 6, a plurality of wefts may be provided in line at the selection device 22, the selection device 22 being one or more rotating elements ( 25), (26), (27) and (28), wherein the rotating element is provided to move the row to select one weft through rotation. 2. The weaving machine according to claim 1, wherein the rotating elements (25), (26), (27) and (28) are provided to move the weft rows along the closed path. 3. The weft row of claim 1, wherein the weft rows are to be carried by one or more circulation carriers 29, 30 which can be rotated by the rotating elements 25, 26, 27, 28. The weaving machine characterized by the above-mentioned. Weaving machine according to the preceding claim, characterized in that the selection device (22) and the weft mechanism (17-21; 38, 39, 42) are provided in one and the same positioning device (12) that is movable in the weft direction. 5. The weft mechanism according to claim 4, wherein the weft mechanism includes a gripper (17, 21) that is movable in the weft direction with respect to the positioning device (12), wherein the gripper (17, 21) is a selection device (22). Weaving machine, characterized in that it is provided for conveying into the opening through movement with respect to the positioning device (12) to carry the weft (34) selected by. In the above claim, the weft mechanisms 17-21, 38, 39, 42 include a cutting device 38 adapted to cut the weft yarn 34 that has been moved into the opening between the opening and the selection device 22. Weaving machine characterized. The weaving machine according to claim 1, wherein the weaving machine comprises a weaving body 1, which is provided for holding in one fixed position during weaving, the weaving machine in the fabric part to bit up one or more wefts to the preformed fabric part. Weaving machine characterized in that it has a structure (2) capable of moving back and forth in the warp direction to move the last fabric portion formed back and forth with the warp (6) extending through. In the above claim, the opening-forming device, the selection device 22 and the weft mechanisms 17-21, 38, 39, 42 are operated so that in every operating cycle the opening is automatically formed between the particular warp 6, A particular weft 34 is selected and a selected weft 34 of a particular length is moved into the opening so that the warp 6, weft 34 and this length are determined in each case so that the wefts are mixed by the warp 6 A weaving machine characterized in that it is woven and forms a predetermined pattern in a fabric. 9. The weaving machine according to claim 8, wherein the weaving machine includes a data processing unit, and has an input device for inputting pattern data into a unit for determining a pattern to be formed, the data processing unit having an opening-forming device, a selection device and a weft mechanism. Weaving machine, characterized in that for determining the operating data or the operating signal from the pattern data necessary to operate the. In a continuous operating cycle, the opening-forming device is operated to form an opening between a portion of the warp yarns 6 provided in the weaving machine, and in every operating cycle, the selection device 22 selects one weft 34 from a plurality of different weft yarns. Weft mechanisms 17-21, 38, 39, 42 are operated to insert and cut the required length of the selected weft 34 into the opening, so that in all operating cycles the weft yarns extending only over a portion of the fabric width are warp A method of making a fabric from a pattern-forming weft yarn in a weaving machine, woven together with (6), wherein the plurality of weft yarns are one or more rotating elements (25), (26), (27) in a line in the selection device (22). And (28), wherein the rotating element is adapted to move the row to select one weft (34) through rotation. The opening-forming device, the selection device 22 and the weft mechanisms 17-21, 38, 39 and 42 are operated so that in every operating cycle the opening is automatically formed between the particular warp 6 , A specific weft 34 is selected, and a selected weft 34 of a certain length is moved into the opening, such that the warp 6, weft 34 and this length are determined in each case so that the weft is A method of making a fabric from a pattern-forming weft, wherein the fabric is interwoven and forms a predetermined pattern on the fabric. 12. The weaving machine according to claim 10 or 11, wherein the weaving machine includes a data processing unit, and has an input device for inputting data into the unit, wherein pattern data for determining a pattern is input to the data processing unit, and the data processing unit Is provided for determining the operating data or the operating signal from the pattern data necessary for operating the opening-forming apparatus, the selection apparatus and the weft mechanisms 17-21, 38, 39, 42. How to make a fabric. 13. A method according to claim 10, 11 and 12, wherein all wefts are woven on both sides of the pattern-forming part by warps (6) provided along the back side of the fabric. 14. The woven body according to claim 10, 11, 12 and 13, wherein the woven body is formed with the warp extending from the woven fabric through the woven body 1 of the weaving machine while the woven body 1 is stationary. (1) A method of making a fabric from a pattern-forming weft, wherein one or more wefts of the preformed fabric portion are bited up by moving towards (1).