DE2104443A1 - Method and apparatus for the manufacture of textile fabrics - Google Patents

Description

PATENT LAWYERS

DR. E. WIEGAND DIPL-ING. W. NIEMANN * ^V "

DR. M. KÖHLER DIPL-ING. C. GERNHARDT

MÖNCHEN HAMBURG

phone: 395 314 2000 HAMBυRG 50, Jan. 28, 1971

TELEGRAMS: KARPATENT KDN I GSTRASSE 28

W. 24559 / Tl 12 / Me

Singer-Cobble Limited, Blackburn, Lancashire (England)

Method and device for the manufacture of textile fabrics.

The invention relates to a method and an apparatus for producing textile fabrics and in particular on the production of a textile material by a combined weaving-knitting process or weaving-knitting process.

In connection with knitted or crocheted fabrics, difficulties are often encountered according to the In the absence of dimensional stability of such substances in the longitudinal direction Transverse direction.

Woven fabrics offer more satisfactory dimensional stability, at least in the warp and weft directions than knitted or knitted fabrics, although the production speed of woven fabric is generally slower than that of of a comparable knitted or knitted fabric.

For the sake of simplicity, the text below will not always refer to knitted or knitted but only to knitted Fabrics, although both types of fabric are ß.

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The main purpose of the invention is to provide a method and an apparatus for manufacturing a Textile fabric to create a higher grade Has dimensional stability than a comparable knitted fabric, but still at a higher speed can be made as a comparable woven fabric.

According to the invention a method of making a fabric comprises the steps of a plurality of warp yarns in the form of a web, a plurality of weft yarns at intervals in the width direction the warp yarn path is created, selected warp yarns are separated from the warp yarn path to a Form compartment for receiving a shot, one or more shots are introduced into the compartment and that thereafter the selection of the yarns separated from the warp yarn path is changed so that a different shed is formed, the or each weft in the shed being formed by knitting selected weft yarns together be knitted together.

Preferably the weft is formed by looping a first weft through a loop of an adjacent second weft yarn is drawn and then a second loop of the first weft yarn is drawn through a loop of a third weft adjacent the first weft.

The invention further comprises apparatus for use in carrying out the above method. The apparatus comprises a first yarn feed device which carries a plurality of yarns in the form of a web, a second yarn feeder comprising a second plurality of yarns in spacing intervals in the width direction of the first-mentioned yarn web carries a shedding device to selected yarns of the first-mentioned plurality of To move yarns from their web to form a shed, and to move these selected yarns to the yarn web for a

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subsequent and different selection and shedding due to, and a weft introduction device that can engage the shed and over or through selected yarns of the second plurality of yarns the web of the first-mentioned plurality of yarns can work together to produce the selected yarns of the second A multitude of yarns to carry out a knitting or knitting process. The weft insertion device has a yarn guide device and a plurality of adjacent reciprocating needles, and it can be between the Carry out lateral transverse movement of the needles and the guide device.

Preferably, the Führungseihrichtung the weft% introducing device comprises a blade (reed), in which are adjacent sheet separations or sheet gaps separated by wires and which is arranged so that it takes up yarns from the first and / or second Garnzufuhreinrichtung.

The invention further comprises a substance produced according to said method or on said device is made.

The invention is described below with reference to the drawing for example explained.

Fig. 1 is a schematic perspective view

a machine for use in the μ

realization of the invention.

Fig. 2 is a schematic side view showing the relative positions of the strands, reed and needle bed at the assumed start of a loop forming cycle.
FIG. 2A is a partial corresponding to FIG

broken top view.
Figs. 3, 3A to 7, 7A are views similar to Figs. 2, 2A in which successive stages

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are shown in the formation of a stitch.

Fig. 8 is a view of one according to the invention

manufactured substance, whereby that area of the substance is shown that of the surface opposite, which is shown in Figs. 2A to 7A.

According to the drawing and in particular according to FIG. 1. includes apparatus for use in making the composite woven / knitted fabric Fabric according to the invention, a loom sley 11 (sley), which is mounted in the usual manner so as to be pivotable about an axis which extends transversely to a web 12 of yarns and at a distance therefrom, furthermore a sheet 13 »the carried on the drawer 11 and is cyclically movable with this, two heald frames 14, each of which has a plurality of Litz wire 14a contributes to the cooperation with the individual warp yarns 12a of the web 12 for shedding purposes, a yarn feeder 15 and a cloth take-up device 16. The device comprises a suitable drive device, not shown, for oscillating movement of the Drawer 11 and for the material take-up device 16, while a shaft device, not shown, is provided for controlling the raising and lowering of the heald frames

The device described so far corresponds to a conventional loom in terms of design and mode of operation.

In contrast to a usual loom, the sheet is 13 movably attached to the tray 11 for controlled adjustment in the longitudinal direction, namely in a manner and Manner and for a purpose as described below.

A fixed needle plate 18 extends in front of the sheet 13 in the width direction of the device and is supported on the frame 19 of the device. In the underside of the needle plate 18 is a plurality of adjacent

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Barten parallel grooves I8a are provided in each of which a needle 21 is slidably received and which extends in a direction parallel to the individual yarns 12a extend. The number of the grooves 18a is two smaller than the number of the wires 13a in the blade 13.

A needle bar 22 is attached to the drawer 11 in a parallel spaced position relative to this and on the fabric pick-up side of the drawer 11 ^ and it can cooperate with the needles 21 in the grooves 18a in the needle plate 18 to displace the needles 21 with relative movement between the To cause needle bar 22 and the needle plate as a result of pivoting movement of the drawer 11, the hook ends of the needles 21, once they are in %

Correspondence with the required mesh length are set, continuously at a constant distance of stay with sheet 13.

The needles 21 are expediently compound needles _/ and they have a tongue 21a which is displaceable in the needle and can be moved into and out of a position in which the hook 21b at the distal end of the needle is closed. In order to facilitate the longitudinal movement of the tongue 21a, it has a lateral foot 21c which extends through a slot in the body 21d of the needle 21 and which, for control purposes, is combined with a suitable actuating device (not shown) can work. The needles 21 and their operation are conventional and, if preferred, other known designs of hook needles, such as latch needles or hook needles, may be used.

A weft heald frame 23 is provided behind the warp heald frame 14, and the weft yarns or fill yarns 24a are provided in the form of a web 24. The weft yarns 24a pass through the wires of the respective heald frame 23 and the sheet 13 similarly to the warp yarns 12a therethrough. The weft feed has a separate tree

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taking into account the difference in the speed of yarn usage of the warp yarns and weft yarns is. Undoubtedly, it is considered preferable to have a separate tree or a separate thread wrap for to provide the selvedge weft yarns.

The drawer 11 and the Kettlitzenrahmen 14 lead usual movements of a loom in that the frames 14 move up and down to a shed for receiving a filling yarn while the drawer 11 moves back and forth for access to to provide the weft insertion compartment 24a and to strike a weft after it is inserted. A chain release mechanism, not shown, is provided to increase the rate of release to control the warp yarns 12a, and this mechanism is provided in the form of a tree, while another The discharge mechanism, not shown, controls the supply of the weft yarns.

When threading the device, two warp yarns 12a, 12a », 12'a, 12'a ¹ ..., 12 ⁿ a, 12 ⁿ a» and a single weft yarn 24a, 24'a ..., 24 ⁿ a are passed through each Sheet interspace passed through except at the selvedge areas, and the weft yarn 24a lies between those warp yarns 12a, 12a ¹ which are in engagement with the same sheet interspace. At the selvedge areas, a warp yarn and a weft yarn are present in each sheet gap, and the weft yarns lie on the outer edges of the yarn web passing through the sheet 13.

The operation of the device described above will be apparent from the description below, in which describes the formation of stitches and the production of a fabric with these stitches.

With reference to FIGS. 2, 2A to 7, 7A, it is assumed that the stitch formation cycle corresponds to the relative Arrangement of the parts begins as shown in Figs.

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2, 2A is shown. At this beginning the drawer 11 is in the stop position, the sheet 13 is centrally located relative to the drawer 11, the needles 21 are fully retracted into the needle plate 18, and each needle is aligned with its respective sheet wire 13a, the needle tongues 21a are located is in the closed position to hold a respective loop in place on the hook, the weft heald frame 23 is in the fully down position and the warp heald frames I ¹ J move to form a new shed.

From the relative arrangement of the parts according to FIGS. 2, 2A, the loop-forming cycle proceeds by backward movement of the drawer 11 and accordingly a corresponding μ movement of the needles 21 and by continuing opening of the shed and progressive displacement of the loop 1 ... l ⁿ dei ⁿ shank of the needle 21 through soft, it has been formed, wherein the tongue of the needle is retracted to the loop for movement on the shaft release. The sheet 13 remains in its central position so that when the hook moves to enter the shed it enters the shed between adjacent warp yarns from two successive sheet gaps. A relative arrangement of the parts according to this stage of the stitching cycle is shown in FIGS Fig. 3, 3A shown.

During the latter part of the backward movement

the drawer 11, the sheet 13 is shifted to the left by a distance which is slightly larger than a sheet gap, and the adjacent warp yarn and the next adjacent weft yarn from the right are passed under the open hook of the needle. It can be observed that the weft yarns 24a, 24 · a ... 2H ⁿ a at a slightly higher level than the lower warp yarns 12a, 12a ¹ , 12'a, 12'a ¹ 12 ⁿ a, 12 ⁿ a 'in the Area of the end of the needle and that is already on the shaft of a given needle

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lying loop is formed by a different weft yarn than that which is now under the needle. The longitudinal displacement of the sheet 13 and the continuing backward movement of the drawer 11 are shown in FIGS. 4A and 5, 5A.

When the sash 11 reaches its rearmost position and then reverses its direction of movement, the weft frame becomes 23 raised to bring the relevant weft yarns into a position for engagement with the hooks, under which they lie and continued forward movement of the drawer 11 and, accordingly, of the needles completed this engagement, as shown in Fig. 6, 6A.

A The tongue continues to move to its closed position, to keep the loop on the needle and to allow a new loop to go through the one on the needle shaft is pulled, the latter loop being lifted off the needle at this stage.

During the continued forward movement of the drawer 11 in the hitting direction, the warp heald frames I ¹ I move to a central position to assist the hitting, and the sheet 13 resumes its central position relative to the drawer 11, and a middle step in this Operation is shown in FIGS. 7, 7A, while the üötzte stage is shown by a view similar to FIG. 2, but with the

™ have changed the warp frame lh.

In conjunction with FIGS. 2 described up to 7 working circuit is used for a displacement of the blade 13 to the right in contrast to the shift to the left as shown in FIGS. 4, ¹ IA, but for the same shedding as shown in FIGS. 2 to 7, repeatedly, and a weft loop, which is now under a needle in the displaced position of the blade 13, is pulled through the loop present on the needle shaft. Upon completion of the attachment of this second working group

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the device returns to a state in which the parts occupy a relative arrangement according to FIGS. 2, 2A, with only the movement of the heddle frames 14 compared to the illustration of FIGS. 2, 2A in the opposite direction Direction done to make another part.

It can be seen that the fact that a change of subject is only possible with the completion of alternate loop-forming work cycles takes place, the salk edge areas are recorded, otherwise under consideration the fact that, depending on the direction of movement of the sheet, a loop is formed on the edge of the salk will or not, will not effectively cross the warp yarn between the formation of successive ones Meshes would take place.

A fabric produced in accordance with the invention is shown schematically in Figure 8 and the weft can be easily seen in FIG Loop shape shown, whereas these loops are compressed after being hit, so that they are more perpendicular to the fabric.

It can be seen that the lateral displacement of the sheet 13 is not limited to a single sheet gap or sheet spacing or a similar distance is limited, and that the shedding of the warp yarns does not the use of two strand frames is limited because |

introduced a greater lateral displacement of the weft yarns and a more sophisticated weave structure for the warp yarns can be if desired. A plurality of shots can be placed in a given compartment before it Bills can be introduced if desired. Furthermore, the weft yarns by a plurality of strands or individually controlled, if desired, to add deselected weft yarns into the fabric as part of its structure to be able to introduce and exclude others, depending on

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it is required. Indeed, if so desired, certain warp threads can be used for the formation of Loops are used, and the weft yarns perform the function of warp yarns by shedding is adjusted so that the required yarns in a suitable stage in the Maschenbxldekreislauf in the way the hook will be lifted.

While the weft heddle frame or the weft heddle frame is preferably arranged rearward of the warp frame are, however, the invention is not limited to such a relative arrangement, as the weft frame or the weft strand frames in front of or between the warp strand frames can be arranged.

In the described embodiment for the production of a fabric with the mesh structure shown refers to the need to change shed with regard to the formation of a fixed selvedge to effect only after completion of stitch formation circuits that a movement of the sheet 13 after require left and right, d. H. after completing two stop operations. The need to Doing this can be avoided by creating a separate heddle frame for the selvedge yarns, which can be operated independently of the main warp heddle frame, although the fabric structure is slightly different would result.

As an alternative, relative sideways movement between the needles and the yarns, which are necessary for the optional cooperation of the needles with different weft yarns is to be achieved by moving the yarns by means of the reed, this relative movement can be achieved in other ways caused, for example, by moving the needle plate.

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Claims (22)

21CHU3 Claims 1,; Method of making a textile fabric it, thereby characterized in that a plurality of warp yarns is provided in the form of a web, a plurality of Weft yarns is provided at intervals at intervals in the width direction of the warp yarn sheet is selected Warp yarns are separated from the warp yarn path to form a shed for receiving a weft, a weft or Wefts are introduced into the compartment and thereafter the selection of yarns to be separated from the web is changed, so that another shed is formed, and that the or each weft in the shed is knitted together or closed cooperation of selected weft yarns is formed. 2. The method according to claim 1, characterized in that a shot is formed in that a loop of a first weft yarn is pulled through a loop of an adjacent second weft yarn and thereafter a second loop of the first weft through a loop of a third weft of the first weft is pulled adjacent. 3. The method according to claim 2, characterized in that the warp yarns and weft yarns have a substantially common one Form yarn web. 4. The method according to any one of claims 1 to 3, da- g characterized in that the weft yarns relative to cooperating with them knitting or knitting needles in Synchronism with the knitting or knitting vagang are shifted laterally. 5. The method according to claim M, characterized in that that the weft yarns are moved in a lateral direction relative to the needles with which they selectively cooperate. 6. The method according to claim k or 5, characterized in that the weft yarns to such an extent 109835/1025 2 Ί O kk A 3 are moved to cause a weft yarn to knit with a next adjacent weft yarn . 7. The method according to claim 6, characterized in that the warp yarns and the weft yarns laterally and together be moved. 8. The method according to claim 5 »characterized in that the yarns are moved to such an extent that a warp yarn is moved to a position that it becomes entangled with a weft yarn. 9. The method according to any one of claims 1 to 8, characterized in that those yarns that are used to form of a shot are to be raised for engagement with the needles. 10. The method according to any one of claims 1 to 9 »thereby characterized in that the warp and weft yarns in their movement into and out of the plane of the web or of the respective lanes for shedding can be controlled individually. 11. The method according to claim 1, characterized in that each shot is posted after its formation in the compartment will. 12. Apparatus for the production of a textile fabric with a first yarn feed device which has a plurality of yarns as a web, a second yarn feeder, the second plurality of yarns at spaced intervals in the widthwise direction of the first-mentioned web, and with shedding means for moving selected yarns of the first plurality from their web to form a shed, and these selected yarns to the web for subsequent and other selection and Shedding characterized by a weft inserter capable of engaging the shed, cooperating with deselected yarns of the second plurality of yarns through the web of the first mentioned plurality of yarns, 109835/1025 2104A43 a knitting or warp knitting process on the selected yarns of the second plurality of yarns, and the one yarn guide device and a plurality of adjacent ones has reciprocating needles and laterally transversely movable between the needles and the guide device is. 13. The apparatus according to claim 12, characterized in that the guide device of the weft insertion device a sheet (13) has adjacent sheet spaces separated by wires (13a) for receiving of yarns from the first and / or the second yarn feeder. 14. Apparatus according to claim 12 or I3, characterized characterized in that the guide device (13) in the direction towards the shedding device (14) and away from it is cyclically movable. 15. The device according to claim 14, characterized in that the guide device (13) of the weft insertion device is carried on a pivoting tray (11). 16. Device according to one of claims 12 to 15 »characterized in that the guide device (13) is displaceable laterally of the needles (21) in its longitudinal direction. 17. The device according to claim 16, characterized in that the needles (21) are slidably mounted in a fixed needle plate (18) which is arranged in a parallel spaced position relative to the guide device (13). 18. Device according to one of claims 12 to 17, characterized by a device through which the Needles (21) are held in a fixed separation from the guide device (13) in the longitudinal direction of the needles. 19. Device according to one of claims 12 to 18, characterized by a yarn displacement device (23), 109835/1025 which operates on the yarns of the second plurality of yarns in order to make these yarns to cooperate with the needles (21) to lift. 20. Device according to one of claims 12 to 19 »characterized in that the shedding device has one or more strand frames (I ¹ O.) 21. Textile fabric with yarns extending in the warp direction and weft direction, characterized in that that the yarns extending in the weft direction comprise yarns that are knitted or knitted together and are bound in by crossing yarns extending in the warp direction of the fabric. 22. Textile according to claim 21, characterized in that the extending in the Häbtrichtung Yarns completely warp yarns shd. 109835/1025 Lee r side