DE10307489B3 - Shed mechanism, for a loom, has drop wire and needle healds to give the warps structured movements to form a plain and a leno weave simultaneously within a weaving cycle - Google Patents

Abstract

The shed mechanism at a loom is structured to form a plain weave and a leno weave within a weaving cycle. Within the woven fabric (9), the plain weave (16) and the leno weave (15) are produced simultaneously within a weaving cycle. For the plain weave, the neighboring warps (1L,2L) for the upper and lower shed are taken alternately by the drop wire and needle healds (4) from the lower shed to the upper shed and vice versa during the leno weave. Only the upper shed warps (2P) are taken from the drop wire/needle healds and are raised into the upper shed and lowered into the lower shed for the leno weave.

Description

The Invention relates to a method for producing a fabric that consisting of both weft and warp threads Plain weaves as well as leno weaves consisting of weft and warp threads according to the features of the preamble of claim 1, and a weaving machine for carrying out the method according to the Features of the preamble of claim 4.

The The invention further relates to a shoulder lamella for a lamella and needle shaft the loom mentioned in claim 4.

Out DE-PS 360 112 is a needle shaft device for manufacturing of fabrics with changing plain weave and leno weave.

The shafts are lifted here in a controlled manner and when the drawer is lowered by one with of the linked wagons. By changing the going up of the shafts can be plain weave and by successively going up the same shaft with such a lateral displacement Lathe binding. To form the leno pocket an ordinary one when the compartment is closed Shaft shifted laterally so that the warp threads of this shaft over the Needle tips and warp threads of the other shaft, which is a needle shaft can.

Becomes now the needle shaft, over the warp threads of the needle tips the second shaft, i.e. the ordinary shaft are excavated, this creates the leno pocket.

at Formation of the canvas compartment, the lateral displacement of the warp threads is canceled; the Excavation of the stems takes place alternately on a regular basis instead of.

Out the described procedure for the formation of a lathe and canvas pocket it becomes clear that a fabric with "changing" plain weave and leno weaves can be produced is, i.e. initially can in the fabric a plain weave and then a leno weave be formed.

Not is disclosed as within a weaving cycle, that is, from leaf stroke Both a canvas-bound fabric and a lathe-bound fabric for the leaf stop Fabric can be produced. It is therefore not disclosed what means provided for the simultaneous production of such bonds in a fabric could become.

To the Manufacture of a fabric with leno weaves and plain weaves a device is known from DE-PS 646 462, the two lying one above the other in one plane needle combs has.

The needle combs are independent controlled by each other, which gives the opportunity to Run the weaving machine to change the weave so that after a or several leno bindings, plain weaves can also be realized can.

The However, document does not disclose as in one fabric at the same time Plain and leno bindings can be formed and what resources are used to train them.

A weaving machine for producing a fabric consisting of upright, leno and weft threads is out DE 101 28 538 A1 known.

How when weaving fabrics at the same time plain or leno bindings can be realized does not disclose this document either.

From the US 4,429,722 A weaving machine is known with at least one warp beam as the first warp thread supplier of plain-weave warp threads and with at least one second warp thread supplier of twisted-thread decorative warp threads.

To the The manufacture of a fabric with a new pattern is the canvas Warp threads through Litzenösen a first and a second, alternating for weaving in the vertical direction up and down moving heald frame managed as a specialist training tool.

The Ornamental warp are additional through the open spaces passed between the strands of the first and second heald frames and for the purpose of weaving shed by loosening the needles of a first and a second needle bar as a shedding means, wherein the first and second needle bars both one in the vertical direction alternately up and down walking movement as well as alternating in the horizontal direction perform reciprocating motion.

Around To be able to carry out the aforementioned vertical movement, the specialist training means are above suitable Precautions with a so-called shedding machine in operative connection.

In that from canvas-bound warp threads and twine-binding decorative warp threads formed shed is entered at least one weft, which by a swivel-driven reed on the stop edge of the fabric to be produced is struck.

The Webblatt has here, in contrast to a conventional one Reed, groups of slats, being between two groups each there is open space open at the top, while the groups themselves upper free end a triangular shape trained leadership wear.

The guides prevent on the one hand that the burlap warp threads the weaving training from the guided tours of the groups are raised and on the other hand they ensure that the themselves in the upper compartment with twisted, decorative warp threads the transverse displacement of the needle bar in question without being damaged be about top of each guide can slide.

The Known weaving machine has the disadvantage that for production a simple plain weave fabric at least two heald frames and for the production of a leno fabric at least two needle bars required are.

Further require the relevant technical training resources for weaving high cost-causing shedding machine.

Furthermore, the above discloses US 4,429,722 not, as in a fabric when it is produced on weaving machines, "pure plain weaves" and "pure leno weaves" with fewer than four heald frames are realized at the same time.

Furthermore the fabric specified in the U.S. patent requires a special reed.

It is the object of the invention, saving costly subject-forming Means, thus saving separate heald frames for the canvas-binding fabric and separate needle bar for that leno weave as well as saving the so-called dobby for the subject-specific means and using a conventional Reed, within a weaving cycle plain weave and leno weaves to be realized in a fabric to be manufactured.

The The object is achieved by a method and a weaving machine for carrying out the method.

To the inventive method can within a weaving cycle in a fabric to be made and leno bindings are formed simultaneously.

In Embodiment of the invention is provided for training the plain weave that the formation of a sub-subject and one Upper thread serving mutually adjacent warp threads alternately or alternately from one and the same lamella and needle shaft from the position of the Lift the lower compartment into the position of the upper compartment and vice versa in the position of the sub-compartment.

simultaneously with the formation of the canvas compartment with the same slat and needle shaft causes the formation of the lathe compartment, namely such that only the training of the The warp threads serving the lathe upper compartment are lifted out.

at essentially excavated canvas and lathe compartment, such as known per se, the entry of at least one weft thread in the compartment. The inserted weft thread is then struck on the fabric edge.

With the striking of the at least one weft thread leads to the warp threads Formation of the upper compartment raised second lamella and needle shaft over the Subject closure in the sub-subject position. At the same time, the first Lamella and needle shaft shifted transversely to the course of the warp threads, see above that the warp threads guided in the first lamella and needle shaft refer to on the warp threads guided in the second lamella and needle shaft laterally be replaced or replaced.

at the lateral offset of the warp threads previously form the canvas upper compartment realized warp threads now the canvas lower compartment, while the warp threads of the original Canvas pocket for the formation of a new canvas pocket are used and at the same time those originally used to train the lathe head warp be used again to form a lathe upper compartment.

With this mode of operation of the first and second disclosed above Lamella and needle shafts become one within a weaving cycle Plain weave and a leno weave realized at the same time.

at light medical dressing material e.g. as a band in plain weave can be woven to form firm fabric edges on separate turning devices be dispensed with, because of the method according to the invention, plain weave together with at least one leno weave on the fabric edges of the Band with only two lamella and needle shafts can be performed.

to execution of the method according to the invention a weaving machine is provided, the means for forming a Shed, means for inserting weft threads into the trained shed and the means for striking the weft thread inserted in the shed to the stop edge of the fabric to be manufactured.

The As is known, means for forming the shed consist of a first lamella and needle shaft, which with a drive is connected, one across the warp threads and thus one across Weaving plane oscillating reciprocating movement of the first slat and needle shaft allowed.

Further the means for forming the shed consist of one of the first Lamella and needle shaft adjacent second lamella and needle shaft, which has suitable Means with a remote from the loom shaft of the loom Shaft is rotatably connected, the drive e.g. from the shop wave is derived.

To the simultaneous production of plain weave and lathe bindings in one Tissue is now provided according to the invention, that on a section of the working width of the first and second Lamella and needle shaft for the formation of leno bindings is determined between two each in the upper and lower Shaft collar of the first and second lamella and needle shafts locked rod lamellae one needle lamella is connected to thread guide eyes directed away from each other, and that on a different section of the working width of the first and second lamella and needle shaft for the formation of plain weaves is determined, in the first lamella and needle shaft, that of the sley closest to the loom is a large number of mutually objectionable rod slats side by side is arranged, which rod lamella in the second lamella and needle shaft either every even or odd number plate of the first lamella and needle shaft with a so-called shoulder lamella single or double-sided shoulder is assigned.

In A further embodiment of the invention consists of the shoulder slats from a longitudinal, flat, preferably metallic body, which according to the invention on a Place its longitudinal extension has a laterally outstanding first and second shoulder alternately a warp thread to form a canvas pocket from the lower compartment of a warp to the upper compartment and vice versa the position of the upper compartment in the position of the lower compartment.

The Shoulder can have a special design; so can the shoulder has a trough-like depression around the warp thread being able to lift and lower safely; the one carrying the warp thread area the shoulder can be level and at an angle α ≤ 90 ° to the longitudinal extent (longitudinal axis the shoulder lamella).

The excellent shoulders through an unsolvable Connected to the elongated body be and include an angle β <180 °.

each Shoulder lamella can also be made from a first elongated flat body with a shoulder bent out from the flat side of the body and formed from a second mirror image of the first body second body exist. Both bodies are then in the upper and lower shaft collar of the lamella and Needle shaft assembled so that this body form the shoulder lamella with the shoulders facing away from each other.

With is the solutions of the invention it is possible for the first time on looms without an additional one Shedding machine including shanks with strands and beams produce fabrics in plain weave and leno weaves within a weaving cycle.

With the elimination of additional shafts the front compartment can be made shorter in such weaving machines. there are the warp threads of the sub-subject in relative calm, so that e.g. on air jet weaving machines moving the lower compartment far below the lower nose of the does not take place in the Rieter stretched weft insertion channel. Further advantageous effects of the invention emerge from the independent claims and from the following examples.

The The invention is explained in more detail below using an exemplary embodiment.

In the attached drawings show:

1 a weaving machine according to the invention in cross section and in a schematic representation,

2 a lamellar needle shaft as a standing rent in perspective,

3 a lamellar needle shaft as a swivel reed in a perspective view,

4 the detail "X" 3 in perspective,

5 a shoulder lamella with double-sided shoulder acc. 3 in the front view,

6 the sectional view of the shoulder lamella along the line AA in 5 .

7 the formation of the shoulders according to a shoulder lamella 5 .

8th the shoulder lamella with shoulder in the side view acc. 5 .

9 the sequence of movements of the first and second lamella and needle shafts when forming a first lathe and canvas pocket and

10 the sequence of movements of the first and second lamella and needle shaft when forming a second leno and canvas pocket.

In the 1 schematically shown weaving machine executes a sequence of movements, after which the warp threads 1 a first warp thread sheet are in the lower compartment and only executes horizontal movements transversely to the inlet of the first and second warp thread sheets while the warp threads 2 the second warp thread coulter can only be moved vertically into the upper and lower compartment. The lamella and needle shaft moves accordingly 3 only across the warp thread coulters, during the lamella and needle shaft 4 with the warp threads 1 and 2 alternately executes a substantially vertical up and down movement.

The entry of a weft thread in the entry channel of a on a sley 6 mounted reed 5 happens in the time interval in which one shed at a time 7 is formed, so the lamella and needle shaft 4 himself in his in 1 position shown.

The weft stops at the tie point 8th of the fabric 9 occurs, for example, at a time when the warp threads 1 change their position transversely to the feed of the warp thread coulters or in the horizontal direction.

With such a sequence of movements, the fabric becomes twisted 15 realized, see also 9 and 10 ,

According to the invention, within a weaving cycle, that is from leaf stop to leaf stop, in addition to the above-mentioned leno binding 15 a tissue 9 in plain weave 16 , see also 9 and 10 , realized with the same shafts as are required for the lathe bindings.

In addition, the lamella and needle shaft 4 in addition to the usual stick slats 10 and the so-called needle slats 11 with a thread guide eyelet 11a , see also 3 and 4 , shoulder slats according to the invention 12 with double-sided or unilaterally arranged or trained shoulder 13a . 14a as in the 5 to 8th shown.

The fabric made 9 is according to 1 over the fabric table 17 and a deflection roller 18 a feed roller 19 fed from there through a nip between the feed roller 19 and a pressure roller 20 via two deflection rollers 21 . 22 comes to the goods tree, not shown, on which it is wound up.

The rollers mentioned are in a machine frame shown in sections 23 that also rotates the fabric table 17 wearing.

The drives assigned to the rollers are known per se and are not shown further. In the area between the point 24a of the match tree 24 and the lamellar and needle shafts 3 . 4 the warp threads run 1 respectively. 2 by a warp stop 25 whose on the warp threads 1 . 2 spreading slats 26 just like the warp threads 1 . 2 are easily accessible from above in the event of a warp thread break.

The drawer 6 with the reed 5 is about supports 27 with one in the machine frame 23 rotatably mounted shaft, which carries out an oscillating rotary movement, the so-called reed shaft 28 , firmly connected, about the axis of rotation of which it executes a back and forth movement serving the weft thread stop.

The Drive the shaft of the shop is well known, so more Explanations are not necessary for this.

The basic structure of the lamella and needle shafts 3 . 4 is from the 2 and 3 to see.

The lamella and needle shafts 3 . 4 have a lower collar 29 and an upper collar 30 on. Both shaft bundles are from a frame, the so-called shaft frame 31 enclosed.

Both lamella and needle shafts 3 . 4 have a large number of spaced-apart rod lamellae 10 , whose respective ends in the upper and lower collar 30 . 29 are anchored.

To according to the inventive method in a tissue 9 at the same time a plain weave 16 and a leno tie 15 train to can, is according to the invention on a first intended length section of the weaving width of the lamella and needle shaft 4 according to the invention between two adjacent slats 10 a so-called shoulder lamella 12 provided and on a second predetermined length section of the same lamella and needle shaft 4 are between the slats 10 so-called needle slats 11 with a thread guide eyelet 11a intended to be seen best in the 3 and 4 ,

Furthermore, on a second length section identical to the first length section, the weaving width of the lamella and needle shaft is 3 between two rod slats 10 a needle lamella 11 with thread guide eyelet 11a arranged.

The thread guide eyelets 11a of the lamellae 11 both lamella and needle shafts 3 . 4 are directed away from each other.

A shoulder lamella according to the invention 12 is in 5 shown.

The shoulder lamella 12 consists of a first single-bar slat 13 with a so-called half shoulder 13a and a second single slat 14 with a half shoulder 14a ,

Both half shoulders 13a . 14a have a trough-shaped recess as a temporary warp thread carrier.

In 7 the shoulders that temporarily support a warp thread are flat, but at an angle β ≤ 90 ° to the longitudinal extension of the slat 13 . 14 aligned so that the relevant warp thread 1 . 2 can be safely lifted for training and slide off the shoulder in the lower compartment.

According to the sectional view AA in 6 can both shoulders 13a . 14a enclose an angle α <180 ° and have a leg length L such that, on the one hand, there is a contact with the neighboring rod lamellae 10 is excluded and that on the other hand a sufficiently large lateral air gap between the shoulder 13a . 14a and the neighboring staff lamella 10 for mutual picking up and taking off of warp threads 1 . 2 is available.

8th shows the side view of a shoulder lamella 12 with the trough-shaped recess in the shoulder 13a . 14a for a warp thread 1 . 2 ,

The method for producing a fabric with the simultaneous formation of plain weaves and leno weaves is based on the 9 and 10 are explained. In the 9 schematically shown lamella and needle shafts 3 . 4 have stick slats, as stated above 10 and needle slats 11 with thread guide eyelet 11a , Only the lamella and needle shaft 4 also has shoulder slats 12 ,

The lamellar and needle shaft 3 leads across to the feed of the warp threads 1 . 2 an oscillating reciprocating motion. The back and forth movement is through the directional arrow 32 displayed.

The lamellar and needle shaft 4 performs a substantially vertically oscillating up and down movement, as indicated by the directional arrow 33 is displayed.

In the gaps between the shoulder slats 12 and the stick slats 10 of the lamellar and needle shaft 4 on the one hand and in the gaps between the rod lamellae of the lamella and needle shaft 3 on the other hand are to form a plain weave 16 the warp threads 1 . 2 moved in. One warp thread each 1 is in the thread guide eyelet 11a every lamella 11 of the lamellar and needle shaft 4 and one warp thread each 2 is in the thread guide eyelet 11a every lamella 11 of the lamellar and needle shaft 3 pulled in to realize a lathe binding.

When lowering the shaft 4 in the sub-compartment, acc. Direction of the downward double arrow 33 , that corresponds to 9 the position of the warp threads 1 and with simultaneous transverse movement of the lamella and needle shaft 3 to the right in the direction of the double arrow 32 the appropriate warp threads 2 by means of the slats 10 on the left shoulder 14a , see also 5 , the shoulder slats 12 placed. Then the lamella and needle shaft moves 4 from the position of the lower compartment to the position of the upper compartment, causing the warp threads 1 and 2 form a canvas-bound loom.

In the same way, all through the thread guide eyelets 11a guided warp threads 2 of the lamellar and needle shaft 4 moved from the position of the lower compartment to the position of the upper compartment, causing the warp threads 1 and 2 train a lathe compartment. The following is in the trained canvas and turner compartment 7 a weft 34 registered, through the reed 7 gem. 1 to the binding point 8th chipped and by changing the subject of the lamella and needle shaft 4 from the upper compartment into the lower compartment using the warp threads 2 tied.

According to 10 are in the sub-compartment position during the lamellar and needle shaft, by a new transverse movement of the lamellar and needle shaft 3 the burlap warp threads 1 on the shoulders 13a of the school in question terlamellen 12 placed in order to be able to form a canvas pocket and a leno pocket again.

1

warp

2

warp

3

lamella and needle shaft

4

lamella and needle shaft

5

reed

6

batten

7

shed

8th

binding point

9

tissue

10

Staff lamella

11

needle plate

11a

thread guiding eye

12

shoulder blade

13

Simply stick blade

13a

shoulder

14

Simply stick blade

14a

shoulder

15

leno weave

16

plain weave

17

cloth table

18

deflecting

19

up roller

20

pressure roller

21

deflecting

22

deflecting

23

machine frame

24

back rest

24a

Point

25

warp stop motions

26

lamella

27

support

28

reed shaft

29

shaft collar

30

shaft collar

31

shaft frame

32

arrow

33

arrow

34

weft

Claims (11)

Method for producing a fabric in plain weave and leno weave, according to which warp threads are drawn in to form a sub-pocket in a first lamella and needle shaft which can be oscillated back and forth across the course of the warp threads, and in a second oscillating lamella and needle shaft which oscillate up and down Warp threads ( 2 ) are drawn in to form an upper compartment, characterized in that in the fabric ( 9 ) the plain weave ( 16 ) and the leno tie ( 15 ) are formed simultaneously by the two lamella and needle shafts within one weaving cycle. A method according to claim 1, characterized in that for producing the plain weave ( 16 ) the adjacent warp threads used to form the lower and upper shed ( 1 . 2 ) alternately from one and the same lamella and needle shaft ( 4 ) are raised from the position of the lower compartment to the position of the upper compartment and vice versa lowered from the position of the upper compartment to the position of the lower compartment, while forming the leno binding ( 15 ) only the warp threads forming the upper compartment in a manner known per se ( 2 ) from the lamella and needle shaft ( 4 ) from the position of the lower compartment to the position of the upper compartment and vice versa from the position of the upper compartment to the position of the lower compartment. A method according to claim 1, characterized in that the mutual lifting of the plain weaves ( 16 ) forming warp threads ( 1 . 2 ) by pushing the first lamella and needle shaft back and forth ( 3 ) is effected. A weaving machine for producing a fabric which has both plain weaves and weft threads and leno weaves comprising weft and warp threads, comprising a weaving drawer carrying a reed and an oscillating reciprocating movement, a first lamella and needle shaft, which is connected to a drive which causes a reciprocating movement of the first lamella and needle shaft oscillating transversely to the weaving plane and a second lamella and needle shaft which is adjacent to the first lamella and needle shaft and which, by means of suitable means, engages with one of the loom shaft of the loom remotely arranged shaft is connected in a rotationally fixed manner and which shaft carries out an oscillating forward and backward movement about its central axis and causes a reciprocating movement of the second lamella and needle shaft oscillating perpendicular to the weaving plane, characterized in that for producing the leno binding ( 15 ) between each of the two in an upper collar ( 30 ) and in a lower collar ( 29 ) of the first and second lamella and needle shaft ( 3 . 4 ) locked slats ( 10 ) one needle lamella each ( 11 ) with thread guide eyelet ( 11a ) and that to form plain weaves ( 16 ) in the first lamella and needle shaft ( 3 ) a large number of slats ( 10 ) is arranged side by side, which in the second lamella and needle shaft ( 4 ) either any even or any odd number plate lamella ( 10 ) of the first lamella and needle shaft ( 3 ) a shoulder lamella ( 12 ) with one- or two-sided shoulder ( 13a . 14a ) for laying on at least one warp thread ( 1 . 2 ) assigned. Loom according to claim 4, characterized in that the warp thread ( 1 . 2 ) shoulder support ( 13a . 14a ) approximately in the plane of the thread guide eyelets ( 11a ) of the second lamella and needle shaft ( 4 ) is trained. Shoulder lamella for a lamella and needle shaft for a weaving machine according to claim 4, characterized as an elongated, essentially flat, preferably metallic body ( 12 ) with an outstanding shoulder on both sides ( 13a . 14a ). Shoulder lamella according to claim 6, characterized by the loose connection of two mirror-image-shaped, elongated, essentially flat, preferably metallic bodies ( 13 . 14 ). Shoulder lamella according to claim 6, characterized by a first shoulder ( 13a ) and a second shoulder ( 14a ) with a trough-shaped warp thread support. Shoulder lamella according to claim 6, characterized by a first shoulder ( 13a ) and a second shoulder ( 14a ) with a flat warp thread support. Shoulder lamella according to claim 9, after which the warp thread support the shoulders at an angle β ≤ 90 ° to the longitudinal axis the shoulder lamella is aligned. Shoulder lamella according to claim 6, characterized in that the first shoulder ( 13a ) and the second shoulder ( 14a ) enclose an angle α <180 '.