DD287539A5 - Double-lift open-shed jacquard - Google Patents

Abstract

In a double-stroke open-jacquard jacquard for double-weaving machines with a read-in mechanism for program and a tray mechanism with positionable after each read in three positions double roles, each with a harness and two each double role assigned, in rows next to each other, one above the other and in the warp direction successively arranged control units (eg, needles, main needles, sinkers), it is envisaged that the distribution of the control units with respect to width and length will be such that the number of juxtaposed rows of control units will be greater than that of conventional double-overhead open-jacquard machines Number of juxtaposed rows of control units is substantially reduced, preferably halved, and that the number of rows of control units arranged one behind the other in the longitudinal direction of the double-stroke open-shed jacquard machine is increased accordingly ht is. This allows the weaving of fabrics with a large weaving width at high weaving speed and at the same time any unrestricted patterning. Fig. 2 {double shed loom; Double-lift jacquard machine; Einlesemechanismus; Programmtraeger; Control unit; Shedding mechanism; Dual role; Harnisch; Stosznadel; Main needle; PCB}

Description

For this 4 pages drawings

Field of application of the invention

The invention relates to a Doppolhub open-shed jacquard machine for double-weaving machines with a b'inlesemechanismus for program support and with a shedding mechanism with positionable after each read in three positions double roles, each with a harness unti associated with two each double blind, in rows next to each other, one above the other and in the warp direction one behind the other arranged control units (eg push pins, main needles, boards).

Characteristic of the known state of the art

Such an arrangement is known from FR-PS 1513410. Such devices are od for the production of double-pile fabrics, such as carpets, plush fabrics. Like. Used. In this case, a Obergewebo and a Uniergowebe, which are connected to pile warp threads together, woven together, and then Oborgewebs and lower fabric are severed, so that the severed pile warp then form the pile. Furthermore, with such

Facilities also so-called rod goods are produced. In double-weaving machines two wefts or a weft and a rod can be entered simultaneously. The warp thread must be able to take three positions, a lower shed, a middle shed and a shed.

In jacquards known from DE-PS 502645 and DE-PS 674920 these three positions are achievable, but not individually after each reading, but this several successive strokes are necessary. This I idt the disadvantage that the achievable weaving speed is low.

In the double-stroke open-jacquard machine of the type mentioned in FR-PS 1513410, the warp threads can be positioned after each reading in three positions. In this case, double roles are provided with arranged Harnes, each double role each two control units, namely main needles and boards, are assigned. The read-in mechanism of such devices is usually designed for reading in punched cards. These punch cards usually have sixteen rows of holes in the longitudinal direction and vary in width. Commonly in the width hole numbers of 28.56 and 84. Since devices of the type mentioned each double role are assigned two control units, in the control of a device of the type mentioned with a conventional punch card in the longitudinal direction only half of the control required control commands issued. Therefore, in addition to this first punch card, a second corresponding punch card has been added next to it, and accordingly the width of the read-in mechanism and the BY side of the shedding mechanism connected downstream of the read-in mechanism have to be coupled. This achieves the required number of control commands. However, this leads to problems in the realization, since depending on the type and width of the fabric to be produced from a certain weaving width the necessary control devices (needles, boards) can not be accommodated side by side, since thereby the width of the jacquard machine with the armor opposite the weaving width is too large and the angle of armor becomes so unfavorable, especially on the outer sides, that excessive friction occurs in the harness. The use of facilities of the type mentioned is therefore limited to small widths, and you can with this device no large Webbreiten, as they are particularly desirable for carpets produce. For the production of carpets with greater weaving width, therefore, for example, devices according to DE-PS 502 645 and DE-PS 574 920 are needed. However, these devices have the disadvantage mentioned above of low weaving speed. From European Patent Publication 0106974, a double-stroke open-shed jacquard machine for double-shed weaving machines is known, by means of which the problem of achievable weaving width and the problem of weaving speed is solved. However, this known device is limited in the achievable pattern, as this is not possible to achieve one of the three positions of the warp threads at each reading. In this arrangement, only one board and only one control unit are provided per double role and per Harnisch each. The associated with facilities of the type mentioned the second board attachment point for the double role is mounted in this arrangement on a movable floor. In this case, all attachment points are each attached to a common floor, which is vertically movable via a control device. The floor can be moved via an eccentric arrangement in a certain rhythm, whereby the third position of the double rollers and the respective Harnischs and thus the respective warp threads is achieved. However, since this third position is not individually attainable for each warp for each warp, the patterning possibility of the fabric to be produced is thus limited.

Object of the invention

The aim of the invention is to produce by changing the double-stroke open-jacquard machine, with the double-weaving machine tissue of any width at high weaving speed and at the same time any unrestricted pattern possibility.

Explanation of the essence of the invention

The invention is based on the object, each Doppelhub open-tray jacquard machine in such a way that by substantial shortening of their width, an increase in their total number over the working width of the double-weaving machine is possible. This object is achieved orfindungsgemäß in that the distribution of the control units with respect to the width and the longitudinal direction is such that the number of juxtaposed rows of control units over the existing in conventional such Doppelhub open-jacquard machines number of juxtaposed rows of Steueieinheiten substantially is reduced, preferably halved, and that the number of longitudinally of the double-stroke open-jacquard machine successively arranged rows of control units is increased accordingly. The unrestricted pattern possibility known Doppelhub-Offonfach-Jacquardmaschinon of the type mentioned was - as discussed - achieved in that the read-in mechanism and the Fachbildmechanismus in the width, ie viewed transversely to the warp direction doubled, but then only the production of tissues up to a certain width allowed. In contrast, the invention is based on the idea to reduce the required number of rows of control units in the width of the double-stroke open-jacquard machine so that the resulting overall width is portable for practical operation, so that the width of the double-stroke open-jacquard in the Relationship to the weaving width is in an acceptable ratio. The not to be accommodated in width rows of control units are arranged one behind the other in the longitudinal direction of the double-stroke open-jacquard machine, which is easily possible in terms of space.

In a further embodiment of the invention can be provided that is designed as a Vornadelwerk picking mechanism with successively arranged rows of fall needles and superimposed rows of butting needles, the number of consecutive angoordnoten rows ν on falling needles and the stacked rows of butt pins gegenüoer a conventional Vornadelwerk is doubled , For example, while in a conventional pre-nailing machine, 16 rows of falling needles are provided one after the other and 16 rows of push pins are provided one above the other, and this arrangement is provided in a double form side by side to simultaneously make two parallel

-3- 207 539

To allow side by side guided punch cards, the number of provided in the Vornadelwerk according to the invention rows of successively arranged fall needles 32 and the number of superimposed push pin also 32. This allows a simultaneous reading of two consecutively brought up punch cards. In comparison with the prior art, this results in the same number of simultaneously supplied information, but the difference is that the information in the known arrangement of two side by side brought punch cards are read (ie large, width "), while the information in the arrangement according to the invention at half the width of the double-stroke open-jacquard machine of two consecutively brought up punched cards are read simultaneously.

Another advantage is that only one device for suspending the punched cards (so-called. Card Pass) is required for the device according to the invention.

It may also be provided in training of the invention that when trained as Vornadelwerk picking with successively arranged rows of fall needles and superimposed rows of butting needles, the number of superimposed rows of butt needles compared to a conventional Vornadelwerk is doubled and the number of rows arranged one behind the other of falling needles the number of successively arranged falling needles in a conventional Vornadelwerk corresponds, and that each fall needle associated with two jacks, and the fall needles are formed accordingly. This embodiment is useful for certain types of weave of the fabric to be created, for example in a three-shot weave. In this arrangement, the information present on the program carrier can be doubled by the assignment of two bumping needles to a drop needle. In a further embodiment of the invention can be provided that the impression effects of the push pins by vertically against the push pins slidably disposed pressure rails reversible sine '. According to an embodiment of the invention, the displacement for all pressure rails can be done together. It may also be provided according to another embodiment of the invention that the pressure rails are formed groupwise displaceable. Conveniently, it can be provided that the pressure rails are formed groupwise for the lower fabric and for the upper product different. Positive "or" negatively "displaced. In this case, the read-in mechanism is designed to read in the same hole card several times in succession.

Doubling the information present on the program carrier or forwarding it in a "positive" or "negative" form is advantageous if the upper fabric and the lower fabric of the fabric to be produced are to be the same from the pattern. In order to produce upperwore and lower fabric with the same pattern, "reverse" control information is required.This at the same time for the production of Oberware example, "positive" control information and the same time required for the Unterware "negative" control information (or vice versa) can with the device according to the invention Due to the possibility of reversing the impression effects of the push pins by vertically displaceable pressure rails, the same punch card can be inserted several times in succession through different positions of the pressure rails on the punched card Information contained "positive" or "negative" varies widely.

According to a further embodiment of the invention can be provided that is formed in a trained as Vornadelwerk picking mechanism for punched cards this for simultaneous reading of two consecutively supplied punched cards. In a further embodiment of the invention, it can be provided that the number of juxtaposed rows of control units approximately corresponds to the number of effective control commands which can be supplied to the control units simultaneously from the punched cards. For example, assume that a punch card 1344 contains possible control commands. If, according to the invention, two such punch cards are successively fed to the read-in mechanism and then read simultaneously, 2688 simultaneously feed-forward control commands ergouen. Dividing this total number by the number 32 results in the value 84. This corresponds to the number of rows contained in a given hole card in the width. The number of juxtaposed rows of control units provided in the double-stroke open-shed jacquard machine would accordingly be 84. For another punched card, namely a punched card with 896 possible control commands, this would result in: 896 χ 2 = 1792 controllable control commands. This value divided by 32 gives a number of 56, so that in this case the number of juxtaposed rows of control units 56 would be. If, according to the above-described embodiment of the invention, only the number of stacked rows of butting needles is doubled compared to a conventional precontracting unit, and if each correspondingly formed dropping needle is associated with two bumping needles, the following results for an example: If the punched card 1344 contains possible control commands, then Here is a doubling of this value (hence "effective control commands"), since in this case instead of two consecutively supplied and simultaneously read punch cards with 1344 possible control foibles, the duplication of the control commands by the assignment of two bumping needles is done to each fall needle.

Ausführungsbelsplel

Reference to an embodiment of the invention will be explained in more detail below. The accompanying drawings show

Fig. 1: a schematic front view of a weaving machine with a double-weaving machine, Harnischoinrichtung and

Double-lift open-shed Jacquardmaschineneinrichtung; 2 shows a schematic sectional illustration through one of the double-stroke open-space Jacquard machines according to FIG. 1, specifically

otwa corresponding to the section line H-II in Fig. 1; Fig. 3 is a plan view (in the direction of the arrow A in Fig. 1) of a prior art double-stroke open-jacquard machine in which two punch cards are fed side by side to the double-stroke open-shed jacquard machine with the shed-forming mechanism correspondingly formed across the width and read in at the same time werdon;

4 shows an illustration corresponding to FIG. 3, but for an exemplary embodiment of the double-stroke open shed · jacquard machine according to the invention, in which two punched cards are fed in succession to the narrower shed-forming mechanism and simultaneously read in;

Fig. S: An illustration of another embodiment of the Einleremechanismus.

In Fig. 1, a schematically illustrated double-weaving machine 1 is fixedly arranged on a substrate 2. On a steel frame, of which only horizontal support 3 are shown for a better overview, double-stroke open-tray Jacquard machines 4 are arranged side by side. The upper width of the entire system is determined by the widths of the juxtaposed Doppelhub-Offenfach-Jacquard machines 4. The double-stroke open-jacquard machines 4 are used in a known manner for the control of schematically illustrated harnesses 5, which are guided above by Harnischführungsroste 6 (for example glass rods) and are guided in the double-loom 1 by a chute board 7 over the weaving width. With the double-weaving machine 1 double fleece fabrics, such as carpets, plush fabric od. Like., Made. In this case, an upper fabric and lower fabric which are connected to each other via pile warp threads are woven together. After the weaving process, the upper fabric and the lower fabric are cut in an unknown manner in such a way that the severed pile warp threads then form the pile.

By means of the double-stroke open-jacquard machines 4, a control can be carried out so that the controlled via the Harnisch 5 warp thread can each take three positions, namely a Unterfachstellung, a Mittelfachstellung and a Oberfachstellung.

In Fig. 2, for a single double-stroke open-shed jacquard machine 4, a read-in mechanism is designated 8 and a shed-type mechanism is designated 9. The read-in mechanism 8 has guided fall needles 10 guided in a known manner via guide devices which are not explained in more detail, as well as thrust pins 11 mounted transversely thereto. A punched card is designated 12. It is guided and transported via a cylinder 13 or presented to the fall needles 10. If there is a hole below a fall needle 10, the fall needle 10 falls with the associated impact needle 11 down. By a horizontal movement of the bumpers 14 in the direction of arrow of the double arrow B then a Abdrückbewegung that push pins 11 corresponding to the graphic representation to the right, the associated fall needles 10 have found no hole in the punched card 12. In the illustrated embodiment, it is such that all drawn fall needles 10 have fallen into a hole of the punched card 12 and thus would be done in this position no Abdrückbewegung. Guide elements for the push pins 11 are designated 15. 16 and 17 are guide elements for main needles 18, which are biased in one direction by compression springs 19. About the main needles 18 schematically illustrated boards 20 are controlled. An overhead lifting box is indicated at 21, a lower lifting box at 22 and a locking box at 23. The boards 20 can be supported in a sub-position on a board floor 24. Two boards 20 are each assigned to a double roller 25. The boards 20 are connected by each übor the upper roller of the Doppolrollen 25 guided connecting members 26 with each other. About the respective lower roller blind a strut 27 is guided, which is fixedly mounted at one end and at its other end carries a schematically illustrated snap hook 28, to each of which a single thread of the harness 5 (Fig. 1) is attached.

In the Piatinenanordnung shown on the left according to FIG. 2 (boards 20), the boards 20 are both on the board bottom 24. This means for the attached to the snap hook 28 Harnischfaden and thus ultimately for the associated warp in the loom, the Unterfachstellung. The two pairs of boards 20 'shown in the middle in FIG. 2; Differing is, however, that in the circuit boards designated 20 ', the board 20' shown on the left rises on the board bottom 24 and the board 20 'shown on the right is pulled up with the upper lifting blade of the lifting blade box 21.

The conditions in the printed circuit boards designated 20 "are exactly the opposite, which ultimately leads to the same compartment position (middle shed position). [Ober Bei] The upper shed position is shown in the board arrangement of the boards 20" 'shown on the right in FIG. In this case, both boards 20 "'are taken, for example, by the associated lifting knives of the upper Hubmesserkastens 21. Thus, with each lifting movement of the Hubmesserkästen 21 and 22 each warp thread has been controlled so that it can take one of the three positions Unterfachstellung, Mittelfachstellung or Oberfachstellung The lower shed position or the upper shed position can then still be locked by the arresting knife box 23 or the sinker bottom 24. It should be added that the sinker bottom 24 and the arrester knife box 23 are fixed in place 11, the main needles 18 and the boards 20 having control units, which are associated with each double roll 25, arranged in rows next to each other, one above the other and in the warp direction one behind the other usually has 16 rows of holes and varies in width. According to the state of the art it is known to supply a second punched card 12b to the double-stroke open-space jacquard machine next to or parallel to a first punched card 12a (FIG. 3). In the case of two parallel and simultaneously supplied punched cards 12a and 12, each punched card is assigned a read-in mechanism 8a and 8b. Corresponding to the spatial representation of FIG. 3, a compartmentalizing mechanism 9a is arranged behind the insertion mechanism 8a and a compartmentalizing mechanism 9b is arranged behind the entry mechanism 8b.

If, for example, joder Deppolhub-Offenfach-Jacquardmaschino 4 shown in FIG. 1 1344 Harnischfäden are assigned, 1344 double rollers 25 are required, each Doppolrolle 25 each two boards 20, main needles 18, butting pins 11 and fall needles 10 are assigned. Accordingly, in order to be able to control each 1344 harness threads separately for each stroke, 2688 control commands or 2688 fall needles 10 were needed to punch punched punch cards 12a corresponding to the desired pattern. 12 b are controllable. According to the state of the art, it is customary for each such double-stroke open-jacquard machine 4 to supply the punched cards 12a and 12b next to one another, and accordingly to arrange the shed-forming devices 9a and 9b arranged behind them next to one another. As can be seen from FIG. 1, the angle at which the harness 5 is fed from the outer double-stroke open-jacquard machines 4 to the chimney board 7 is becoming increasingly unfavorable, the greater the desired weaving width and thus the number of double-stroke open-side sheaves to be arranged next to each other. Jacquard machines 4 is. The width of the read-in mechanism and the tray mechanism depends directly on the punch card width. From a certain Webbreito is dio in the outer

Harnisch 5 occurring friction too big. In the arrangement according to FIG. 3, in each shedding mechanism 9a and 9b, 672 double rolls are arranged side by side over the width of the double shed weaving machine 1. For 1344 harness threads, for example, according to the state of the art, the overall width shown in FIG. 3 (corresponding to the total width of the shed-forming mechanisms 9a, the required gap and the shedding mechanism 9b) is required. Dio thus resulting per double-stroke open-jacquard machine 4 total width is indicated in Fig. 3 with C. In contrast, according to the invention shown in principle in Figure 4, a total width D, which is substantially reduced compared to the width C of conventional machines, preferably more than halved. According to the invention, the distribution of the control units (push pins 11, main needles 18,, boards 20) is such that the number of rows of control units arranged side by side (across the width of the double-stroke open-shed jacquard machine 4) is substantially halved, and accordingly the number of control units in the longitudinal direction E of the double-stroke open-jacquard machine 4 successively arranged rows of control units is increased accordingly. 4, although two punched cards 12 are fed to the read-in mechanism denoted by 8, they are not parallel to one another but one behind the other, ie in the read-in mechanism 8 the number of successively arranged rows of fall needles 10 and the superimposed rows of impact needles 11 is doubled compared to a conventional precut needle work.This duplication leads to a structural enlargement of the shed forming mechanism 9 in the longitudinal direction E, but at the same time leads to the required width C according to the prior art (FIG. This in turn makes it possible to install a weaving machine for creating double weaves with a large weaving width, which - compared to the prior art - with the same total width of the double-stroke open-jacquard machines 4 weaving a double fabric with the order of double weave As can be seen from FIG. 2, the read-in mechanism 8 shown there is designed as a pre-needle work with fall needles 10 and impact needles 11. To be able to read the existing from two successive brought up punch cards Lochkaitonanordnung 12 at the same time, the read-in mechanism 8 is formed accordingly. If the two punched cards of the punched card arrangement 12 each have 16 rows of holes, then 32 consecutive rows of falling needles 10 are then assigned to the read-in mechanism, to which then 32 rows of push pins 11 are assigned one above the other. In FIG. 2, only a few fall needles 10 and a few push pins 11 are shown for the sake of clarity. If the punch card assembly of the punch cards 12 contains a total of 2688 simultaneously controllable commands, 84 rows of controllers (eg, bump pins 11, main pins 18, boards 20) are provided across the width gosof. Accordingly, the number of juxtaposed rows of control units Vn (namely, 2688: 84) is the number of effective control commands to be fed to the control units from the punch cards 12 at the same time. 5, a further embodiment of the invention is shown. The parts which correspond to those of Fig. 2, are provided with the same reference numerals. While in the device according to FIG. 2 each fall needle 10 is associated with a push pin 11, in the case of the fall needles designated here by 10 a, each of these fall nadines 10 a is assigned two push pins 11. The fall needles 10a are accordingly formed aue, and indeed, each fall needle 10a has two eyelets 29. The impression effects of the impact needles 11 according to FIG. 5 can be reversed by vertically displaceably arranged opposite the push pins 11 pressure rails 14a. The pressure rails 14a are expediently designed to be displaceable together or in groups.

In contrast to the embodiment according to FIG. 2, to which a punch card arrangement consisting of two consecutively arranged punched cards 12 can be supplied, the picking mechanism according to FIG. 5 is supplied with only one punched card 12c. Since the number of control pins doubled by the number of dropping needles 10a is doubled by the number of control commands coming from the punched card, the number of control commands supplied to the control units corresponds to the number of control commands according to FIG. 2 and FIG The push bars 14a in Fig.5 are drawn so that a positive reading takes place, ie, a hole in the punch card 12c does not cause the jaw needle 11a associated with a dropping needle 10a to be associated with the upper fabric and the other push needle Pushing the push pins 11. When the push bars 14a are displaced vertically, for example, in common or in groups, the push pins 11 - although the corresponding drop pins 10a have fallen into a hole of the punch card 12c - can be pushed in the direction B to the right of the push bars 14a, which corresponds to a negative reading ß Fig. 5 has the advantage that the construction over the width in sliding chor manner gohalten narrow as in the arrangement of Fig. 4, however, only one hole card (ie half of the hole cards 12 of FIG. 4) is required.

In the apparatus according to FIG. 5, each punched card 12c is preferably read in several times in succession. In this case, by changing the position of the pressure rails 14a, the pattern information contained in the punched card 12c can be varied, for example, when the pressure rails 14a are jointly shifted from "negative" to "positive" (or vice versa). By a group-wise presentation of the printed matter 14a, a further variation can take place. This has the advantage that fewer hole cards are required for certain fiber connections than in the prior art.

Claims (8)

1. Double-stroke open-shed jacquard machine for double-weaving machines with a read-in mechanism for program support and with a shedding mechanism with positionable after each reading in three positions double roles, each with a harness and with two each double role assigned, arranged in rows next to each other, one above the other and in the warp direction one behind the other Control units, characterized in that the distribution of the control units with respect to the width and the longitudinal direction is such that the number of juxtaposed rows of control units substantially reduces the number of juxtaposed rows of control units present in conventional such double-stroke open-jacquard machines; is preferably halved and that the number of longitudinally of the double-stroke open-jacquard machine (4) successively arranged rows of control units is increased accordingly. 2. Double-stroke open-jacquard machine according to claim 1, characterized in that formed in a Vornadelwerk read-in mechanism (8) with successively arranged rows of Falinadeln (10) and superposed rows of push pins (11), the number of successively arranged rows of fall needles ( 10) and the superimposed rows of butting needles (11) is doubled compared to a conventional Vornadelwerk. 3. double-stroke open-jacquard machine according to claim 1, characterized in that formed in the Vornadelwerk as a picking mechanism with successively arranged rows of fall needles (10 a) and superposed rows of butting needles (11) the number of superimposed rows of butting needles (11) doubled in a conventional Vornadelwerk, and the number of successively arranged rows of fall needles (10a) corresponds to the number of successively arranged rows of fall needles in a conventional Vornadelwerk, and that each fall needle (10a) associated with two push pins (11), and the fall needles (10a) are formed accordingly. 4. double-stroke open-jacquard machine according to claim 3, characterized in that the impression effects of the push pins (11) by vertically against the push pins (11) slidably disposed pressure rails (14 a) are reversible. 5. Doppelhub open-tray jacquard machine according to claim 4, characterized in that the pressure rails (14 a) are vertically displaceable together. 6. double-stroke open-jacquard machine according to claim 4, characterized in that the pressure rails (14 a) are formed in groups displaceable. 7. double-stroke open-jacquard machine according to one of claims 1 to 6, characterized in that formed in a Vornadelwerk formed as a pick-up mechanism (8) for punched cards dieszum for simultaneous reading of two successive punched cards (12). 8. double-stroke open-jacquard machine according to claim 7, characterized in that the number of juxtaposed rows of control units about V32 corresponds to the number of the punch card (12; 12c) at the same time the control units fed effective control commands.