EP1920094B1 - Method and device for forming a leno fabric on a weaving machine - Google Patents
Method and device for forming a leno fabric on a weaving machine Download PDFInfo
- Publication number
- EP1920094B1 EP1920094B1 EP06777143.6A EP06777143A EP1920094B1 EP 1920094 B1 EP1920094 B1 EP 1920094B1 EP 06777143 A EP06777143 A EP 06777143A EP 1920094 B1 EP1920094 B1 EP 1920094B1
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- European Patent Office
- Prior art keywords
- guides
- needles
- elements
- warp threads
- weaving machine
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
- D03C7/00—Leno or similar shedding mechanisms
- D03C7/06—Mechanisms having eyed needles for moving warp threads from side to side of other warp threads
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
- D03C7/00—Leno or similar shedding mechanisms
Definitions
- the invention relates to a method and a device for forming a leno fabric on a weaving machine, in which a number of needles are arranged over the width of the weaving machine and are provided with a guide for guiding a warp thread and in which elements provided with a plurality of guides for guiding a warp thread are arranged in order to move a warp thread guided by an element substantially in the longitudinal direction of a needle and transverse thereto.
- a device of this type for weaving a leno fabric is known, inter alia, from DE 466.340 .
- the needles guiding a warp thread are fixedly attached to a frame of the weaving machine and the elements provided with a plurality of guides for a warp thread are moved up and down as well as to and fro.
- a device for weaving a leno fabric comprising an aforementioned element is also known from WO 02/04723 . With a device of this type, the warp threads guided by the element are alternately moved to the right and to the left of the needles.
- Leno fabrics in which a number of warp threads run continuously and warp threads are alternately woven to the right and to the left of the continuous warp threads and around weft threads are described, inter alia, in FR 702.507 .
- a device of this type is less suitable for weaving at high weaving speeds.
- the invention comprises a method in which the warp threads guided by an element form a leno weave with warp threads guided by needles, in which the distance between warp threads at the guides of an element is a multiple of the distance between warp threads at the guides in the needles.
- the guides of the elements are arranged in such a manner that a guide of one needle is arranged substantially opposite one guide of one of the elements. This is possible because the distance between at least two of the guides of an element is a multiple of the distance between the guides of the needles. This allows the number of guides of the elements along the width of the weaving machine to be equal to the number of guides of a needle. In addition, this arrangement also allows for the guides of the elements arranged in succession to be moved substantially in the same plane.
- the guides of the elements arranged in succession are substantially in the same plane. This has the advantage that the elements only have to move up and down over a relatively small distance in order to form a shed with a certain opening than would be the case if they were not in the same plane. Moving the guides in the elements arranged in succession in substantially the same substantially horizontal plane allows weaving at higher weaving speeds.
- two elements are provided with a plurality of guides, in which the distance between the guides of each element is double the distance between the guides of the needles and in which the guides of each element can be alternately arranged along the width of the weaving machine.
- the two elements are in this case arranged in succession along the direction of the warp threads. This allows a leno fabric to be formed with a direction of rotation as desired for the successive leno weaves by a suitable transverse movement of the elements.
- the two elements can move up and down synchronously and can move to and fro in phase or in counterphase.
- three elements are provided with a plurality of guides, in which, for example, the distance between the guides of each element is treble the distance between the guides of the needles and in which the guides of each element can be arranged, for example, alternately over the width of the weaving machine.
- This allows a leno fabric to be formed with a direction of rotation as desired for the successive leno weaves by a suitable transverse movement of the elements.
- the three elements are in this case arranged in succession along the direction of the warp threads.
- the distance between the guides of each element is the quadruple or a suitable multiple of the distance between the guides of the needles and in which the guides of each element can be arranged alternately, for example over the width of the weaving machine.
- the invention comprises a device in which the warp threads guided by an element form a leno weave with warp threads guided by needles, in which the distance between guides of an element is a multiple of the distance between the guides of the needles.
- the guides of the elements are arranged such that a guide of a needle can be arranged substantially opposite one guide of one of the elements.
- the guides of the elements arranged in succession are substantially in the same plane.
- the needles are arranged in a fixed position and the elements are arranged such that they can be moved substantially in the longitudinal direction of the needles and transverse thereto. This allows warp threads guided by an element to move up and down as well as to and fro transversely in order to bring said warp thread to a particular side of a needle in order to form a shed with a warp thread guided by the needle.
- the device comprises a drive unit in order to move at least one of the elements transversely to and fro, which drive unit comprises a controllable drive motor.
- the elements are guided in a lateral guide substantially in the longitudinal direction of the needles and substantially parallel to one another.
- the warp threads which are guided by the guides of the needles form the bottom plane of warp threads in the shed. This is advantageous for forming a leno fabric and for providing a drive unit for the elements.
- the weaving machine illustrated in fig. 1 comprises a device according to the invention, in which a number of needles 1 are arranged at regular intervals over the width of the weaving machine. For the sake of clarity, only a limited number of needles are illustrated, but in the exemplary embodiment shown, needles are provided over the entire width of the fabric to be woven. In each case, a number of needles 1 are attached to a holder 2. Each holder 2 is attached to a transverse beam 5 via an intermediate holder 3 and a plate 4. The transverse beam 5 extends over the entire width of the weaving machine and is fixedly attached to the lateral parts (not shown) of the weaving machine via support pieces 6.
- the vertical position of the needles 1 may for example be adjusted or set over a certain distance by attaching a holder 2 in a suitable vertical position relative to an intermediate holder 3 or by attaching an intermediate holder 3 in a suitable vertical position relative to a plate 4.
- the securing bolts 7 are for example guided with play inside openings of the holder 2 and/or the securing bolts 8 are guided with play inside openings of the intermediate holder 3.
- the plate 4 may analogously be attached to the transverse beam 5.
- the weaving machine also comprises a support beam 9 which extends over the width of the weaving machine. The support beam 9 is securely attached for example to the lateral parts (not shown) of the weaving machine and/or to the support pieces 6.
- the weaving machine also comprises two elements 10 and 11 which are provided with a plurality of guides for guiding warp threads. Each element 10 or 11 extends over the width of the weaving machine.
- the element 10 comprises a lateral support 12 on both sides and a transverse support 13 which connects the two lateral supports 12.
- the element 11 comprises a lateral support 14 on both sides and a transverse support 15 which connects both lateral supports 14.
- the lateral supports 12 and 14 can be moved up and down with the aid of associated drive rods 16, 17 and 18, 19 substantially along the longitudinal direction of the needles 1. In this case, the drive rods 16 and 17 are moved up and down completely synchronously with one another and the drive rods 18 and 19 are moved up and down completely synchronously with one another by an associated drive (not shown).
- Such a drive is described, for example, in WO 02/04723 and is, for example, designed with a suitable cam system and with a transmission similar to a conventional drive for weaving frames on a weaving machine.
- the drive rods 16 to 19 are attached to an associated transverse support 13 or 15 by associated hinges 20.
- the group of drive rods 16, 17 and the group of drive rods 18, 19 in this case move substantially synchronously with one another.
- Such drive rods 16 to 19 may be provided at each end of an element 10, 11. With the elements 10, 11, additional drive rods 16 to 19 may engage along the width of the elements 10, 11 between the ends of the elements 10, 11.
- the transverse support 13 also comprises a guide piece 21 which is guided relative to a guide 22 which is fixedly attached to a frame of the weaving machine in order to limit sagging of the transverse support 13 in the direction of the warp threads.
- the transverse support 15 also comprises a guide piece 23 of this type.
- the lateral supports 12 and 14 are guided in a pair of lateral guides 24 which is, for example, attached to the support pieces 6.
- the element 10 and the element 11 can be guided virtually parallel to one another in a lateral guide 24, so that these can move in a substantially vertical plane, in a plane which is arranged substantially perdendicular to the warp threads or virtually in the longitudinal direction of the needles 1.
- the elements 10 and 11 are moved to and fro laterally or transversely by a drive unit 25, in order to be able to move a warp thread guided by an element 10 or 11 transversely relative to the associated needle.
- the transverse support 13 is connected to a coupling rod 26 which is driven by a crank element 27.
- the crank element 27 is arranged so as to be rotatable about a fixedly arranged rotary shaft 28 which is mounted on a support 29.
- the support 29 is fixedly arranged on a frame of the weaving machine.
- a controllable drive motor 30 is also attached to the support 29, for example a controllable switchable reluctance motor.
- FIG. 3 also shows shaft journals 64, 65 and 66 which respectively connect the lever 27 to a coupling rod 26, 33 or 34 in a rotatable manner.
- the dimensions of the crank element 27 and of the eccentric 32 are chosen such that the elements 10 and 11 can be moved to and fro in the transverse direction at a suitable amplitude.
- a suitable amplitude is, for example, in the order of magnitude of the distance between the needles.
- the method by which the length of the coupling rods 26 and 34 can be adjusted is analogous to that described in WO 02/04723 and makes use of adjusting elements 35 or 36 in order to allow the elements 10 and 11 to be adjusted to a desired transverse position, more particularly to a transverse position relative to the needles.
- the coupling rod 26 is connected via a hinge 37 to the transverse support 13, while the coupling rod 34 is connected to the transverse support 15 via a hinge 38.
- the transverse support 15 in this case comprises an opening 39 in order to allow a hinge 37 to pass through the transverse support 15.
- a plane of warp threads 40 is guided through the guides 41 in the needles 1.
- each needle 1 is provided with a guide 41.
- These warp threads 40 come from a warp beam (not shown) and are guided toward the needles 1, inter alia via a deflecting roller 42.
- the deflecting roller 42 is attached to the transverse beam 5 by means of springs 43. According to a variant (not shown), the deflecting roller 42 can be securely attached to a transverse beam.
- a plane of warp threads 44 is guided through guides 45 in the element 10, whereas a plane of warp threads 46 is guided through guides 47 in the element 11.
- the warp threads 44 and 46 are shown in solid lines in their essentially highest position, whereas those in their essentially lowest position are shown in dashed lines.
- the guides 45 in the element 10 are provided on holders 48 which are arranged next to one another over the width of the weaving machine and which each comprise a number of guides 45.
- the guides 47 in the element 11 are provided on holders 49 which are arranged next to one another over the width of the weaving machine and which each comprise a number of guides 47.
- the elements 10 and 11 are arranged in succession along the direction of the warp.
- the guides 41, 45 and 47 consist of thread guides in the shape of guiding eyelets.
- the warp threads 40 and 44 or the warp threads 40 and 46 which together are intended to form a leno weave, are in each case guided in a known manner between two reed teeth of a reed 50.
- the reed 50 is mounted on a beater in a known manner.
- the warp threads 40 and 44 and the warp threads 40 and 46 may form a shed 51, in which the bottom plane of warp threads of the shed 51 is formed by the warp threads 40 which are guided through the fixedly arranged needles 1, and the top plane of warp threads is formed by the warp threads 44 and 46 which are guided through an element 10 or 11.
- Fig. 5 shows the position of the elements 10 and 11 and of the needles 1 with respect to one another in a first position for a device as illustrated in figs. 1 to 4 .
- the guides of the elements 10 and 11 are arranged such that a guide 41 of a needle 1 is arranged substantially opposite or near a guide 45 or 46 of one of the elements 10 or 11.
- the number of guides 45, 47 of elements 10 and 11 provided along the width of the weaving machine is equal to the number of guides 41 of needles 1.
- the distance X between the guides 45 of the element 10 is in this case equal to the distance Y between the guides 47 of the element 11, whereas these distances X and Y are double, that is to say twice, the distance Z between the guides 41 of the needles 1.
- the element 10 is in this case arranged such that the warp threads 44 are to the right of the associated needles 1, whereas the element 11 is in this case arranged such that the warp threads 46 are to the left of the associated needles.
- the elements 10 and 11 are moved up together whereas the needles remain stationary, thus resulting in the position shown in fig. 6 .
- a weft thread can be introduced.
- the element 10 moves to the left and the element 11 moves to the right, and both together are being moved downward to the position shown in fig. 7 .
- the elements 10 and 11 move back up to the position shown in fig. 8 . In this position, a subsequent weft thread can be introduced.
- the two elements 10 and 11 are provided with a plurality of guides 45 or 47, the distance between the guides 45 or 47 of each element 10, 11 being double the distance between the guides 41 of the needles 1.
- the guides 45 and 47 are in this case arranged alternately along the width of the weaving machine, which means that a guide 45 and a guide 47 are arranged in succession.
- the guides 45 and 47 in the elements 10, 11 arranged in succession are in substantially the same plane, more particularly in a substantially horizontal plane.
- the length B of the crank arm of the crank element 27 by which the element 11 is moved via the coupling rod 34 is slightly larger than the length A of the crank arm of the crank element 27 with which the element 10 is controlled via the coupling rod 26.
- This allows the element 11 which is located further from the beat-up line 52 of the fabric 53 to move relatively more transversely than the element 10 which is closer to the beat-up line 52 of the fabric 53. Consequently, it is ensured that the warp threads 46 are moved transversely over such a distance that the warp threads 46 can substantially form the same angle to the warp direction as the warp threads 44. This is advantageous in order to move the warp threads 44 and 46 to the desired side of the needles 1.
- the device according to the invention can be used to form a leno weave in a manner analogously to that described in WO 02/04723 .
- the coupling rod 26 is attached using a shaft journal 68. If the coupling rod 26 in the embodiment of fig. 10 were attached at the shaft journal 64, as indicated by a dashed line, a device similar to that of fig. 3 would result.
- Fig. 11 shows a position of the elements 10 and 11 which is analogous to the position in fig. 5 .
- both elements 10 and 11 can, for example with the aid of a device as shown in fig. 10 , be moved together to the left or to the right, albeit on a slightly different course.
- a fabric can be produced as illustrated in fig. 12 , in which warp threads 40, 44 , 46 and weft threads 67 form a fabric. It will be clear that in this case the elements 10 and 11 are moved transversely in phase.
- fig. 13 shows an embodiment in which three elements 10, 11 and 54 are provided with a plurality of guides 45, 47 and 55, in which the distance between the guides 45, 47 or 55 of each element 10, 11 or 54 is treble the distance between the guides 41 of the needles 1.
- the guides 45, 47 or 55 of each element 10, 11 or 54 are arranged alternately along the width of the weaving machine.
- Each element 10, 11 or 54 may, for example, be driven by a dedicated drive motor in accordance with a desired pattern in order to be able to form a specific leno weave.
- Each element 10, 11 and 54 can guide a plane of associated warp threads 44, 46 and 56.
- the needles 1 can be fixedly arranged and for the elements 10, 11 to be arranged so as to be movable substantially in the longitudinal direction of the needles 1 and transverse thereto, the needles can also be arranged so as to be upwardly and downwardly movable. This allows, for example, the course of the elements 10, 11 along the longitudinal direction of the needles 1 to be limited from the top position to approximately half the course illustrated in fig. 4 . In fig. 4 , the course is determined by the opening of the shed 51.
- the needles 1 have to move upward approximately halfway along the abovementioned course, so that a warp thread 44 or 46 can be moved to the other side of an associated needle 1 at the point in time when the warp threads 44 or 46 are under the ends of the needles 1.
- the warp threads 40 which are guided by the guides 41 of the needles 1 form the bottom plane of warp threads of the shed 51.
- the warp threads 40 which are guided through the needles 1 may of course form the top plane of warp threads of the shed 51.
- the needles 1 have to point upward.
- the elements 10 and 11 may, for example, remain arranged analogously, whereas the warp threads 44 and 46 in this case obviously have to move to the top position relative to the needles 1 transversely to the other side of the needles 1.
- top and bottom in the description are thus relative terms which are associated with a specific embodiment.
- Fig. 16 shows a variant in which the elements 10 and 11 each comprise an elongate support element 57, 58 which is provided with guides 45 and 47, respectively , for guiding a warp thread 44 or 46.
- This elongate support element 57, 58 can be attached to a transverse support 13 or 15 in a manner analogous to a holder 48, 49.
- the needles 1 are arranged analogously to fig. 1 .
- Fig. 17 shows another variant in which each of the elements 10 and 11 comprises an elongate support element 59, 60 which is respectively provided with guides 45 and 47 for guiding a warp thread 44 or 46.
- Each elongate support element 59, 60 is also provided respectively with a relatively large opening 61, 62 which allows a warp thread 46 or 44 to pass through the elongate support element 59, 60. The latter is advantageous in order to keep the warp threads 44 and 46 at the guides 45 and 47 separate.
- Fig. 18 shows another variant in which the distance between guides 45, 47 of at least one element 10, 11 is a multiple of the distance between guides 41 of the needles 1.
- the distance between at least two of the guides 45 of the element 10 is a multiple of the distance between the guides 41 of the needles 1.
- the distance between the guides 47 of the element 11 is in each case a multiple of the distance between the needles 1.
- other such variants are also possible which allow certain specific leno weaves to be formed.
- a multiple is understood to mean double, treble, quadruple, quintuple or any other multiple.
- holders 48 and 49 allows the application of a transverse support 13 or 15 which is in each case located outside the shed 51.
- This allows the use of a selvage device 63 which, together with a device according to the invention, can form a fabric.
- the warp threads which are controlled by the selvedge device 63 are in this case essentially unimpeded by the transverse supports 13 and 15.
- the selvage device 63 may be designed, for example, as illustrated in EP 772.703 B1 .
- the transverse movement of the elements 10 and 11 may, for example, be produced with the aid of at least one linear drive motor rather than with the aid of a drive motor 30, an eccentric 32, a crank element 27 and the like.
- each element can be driven by a dedicated controllable drive motor.
- the needles and the associated guides of the elements can also be arranged at varying distances along the width of the weaving machine. This allows, for example, special leno fabrics to be formed.
- the device according to the invention is particularly suitable for weaving relatively thick warp threads 40 under high tension together with relatively thin warp threads 44 or 46 under lower tension, so that these relatively thin warp threads 44, 46 can be woven around the relatively thick warp threads 40. This results in a leno fabric in which the relatively thick warp threads 40 remain substantially stretched and are not tied around or about weft threads.
- a special leno fabric can be formed having a leno weave with a group of weft threads.
- each element 10, 11 or 54 does not have to be returned from the top vertical position via the bottom vertical position to the top vertical position during each insertion, but this movement can be carried out after only a number of insertions.
- combinations of previous movements are possible.
- a device according to the invention can also be used in combination with another device for forming leno weaves.
- an element 69 is for example provided which has guides 70 for guiding warp threads 71, in which the distance between the guides 70 is equal to the distance between the guides 41 of the needles 1.
- the frame-shaped element 69 has an opening 72 which allows warp threads 44, 46 to pass through this element 69.
- the element 69 can be moved transversely to and fro as well as up and down by means of a drive unit in a manner analogous to that of the elements 10, 11.
- a fabric can be formed as illustrated in fig. 20 , in which warp threads 44, 46 and 71 together with weft threads 67 form a fabric.
- Fig. 21 shows another variant in which, in addition to the elements 10 and 11, elements 73 and 74 are also provided according to the invention.
- the element 73 comprises guides 75 for warp threads 76, whereas the element 74 comprises guides 77 for warp threads 78.
- the elements 73 and 74 are in this case designed in the shape of a frame and comprise an opening 79 or 80 in order to pass the warp threads 44 and 46 through the elements 73 and 74.
- the elements 73 and 74 may be driven in a manner similar to that of the elements 10 and 11. By means of such a device, it is also possible to weave a leno fabric as illustrated in fig. 20 .
- Fig. 22 shows a variant, in which the elements 10, 11 which comprise guides 45, 47 for guiding warp threads 44, 46 are arranged one above the other.
- the element 10 in this case comprises a plurality of openings 81 for passing warp threads 46 through.
- Such elements 10, 11 can be arranged opposite needles in a suitable manner and can be used in a manner analogous to that of the embodiment of fig. 5 in order to manufacture a leno fabric according to the invention.
- the device according to the invention can also be replaced by a device as disclosed in WO 02/04723 or by a device as disclosed in DE 466.340 .
- a leno fabric can be formed in which the warp threads 40 are in each case tied in on both sides by a warp thread from a first element and by a warp thread from a second element.
- the invention may be used on any type of weaving machine, such as an air weaving machine, a gripper weaving machine, a water jet weaving machine, a projectile weaving machine, a gripper shuttle weaving machine or another type of weaving machine.
- the device according to the invention also has the advantage that it can be fitted on practically any existing weaving machine in a simple manner.
- a method and a device according to the invention inter alia allow a leno fabric to be formed having both leno weaves with an S-weave and leno weaves with a Z-weave which are woven next to one another, both alternately as well as according to a specific pattern.
- a method according to the invention in which the distance between the warp threads 44, 46 which are guided in guides 45, 47 of an element 10, 11 is a multiple of the distance between the warp threads 40 which are guided in guides 41 of the needles 1 is preferably used with the aid of a device according to the invention.
- a leno fabric does not have to be formed over the entire width of the weaving machine.
- the warp threads of this conventional fabric can be controlled in a known manner by frames, harness cords of a jacquard device or in any other manner.
- the expression over the width of the weaving machine in the description of this application is understood to mean over at least a part of the entire width of the weaving machine.
- a conventional fabric can be woven with a device according to the invention, more particularly a conventional one-one fabric. If one of the elements is not moved transversely to and fro and another element is moved transversely to and fro, a fabric can be formed which has both a leno weave and a conventional fabric weave. Obviously, other combinations are also possible.
Description
- The invention relates to a method and a device for forming a leno fabric on a weaving machine, in which a number of needles are arranged over the width of the weaving machine and are provided with a guide for guiding a warp thread and in which elements provided with a plurality of guides for guiding a warp thread are arranged in order to move a warp thread guided by an element substantially in the longitudinal direction of a needle and transverse thereto.
- A device of this type for weaving a leno fabric is known, inter alia, from
DE 466.340 . In this case, the needles guiding a warp thread are fixedly attached to a frame of the weaving machine and the elements provided with a plurality of guides for a warp thread are moved up and down as well as to and fro. A device for weaving a leno fabric comprising an aforementioned element is also known fromWO 02/04723 - Leno fabrics in which a number of warp threads run continuously and warp threads are alternately woven to the right and to the left of the continuous warp threads and around weft threads are described, inter alia, in
FR 702.507 - It is an object of the invention to provide a method and a device which enables a leno fabric to be woven in a simple manner and at high weaving speeds. This object is solved by the method according to
claim 1, the device according toclaim 11, and the use of a device according toclaim 20. Preferred embodiments are defined in the dependent claims. - To this end, the invention comprises a method in which the warp threads guided by an element form a leno weave with warp threads guided by needles, in which the distance between warp threads at the guides of an element is a multiple of the distance between warp threads at the guides in the needles.
- This allows certain leno fabrics to be formed in a simple manner and at high weaving speeds, more particularly leno fabrics having a specific pattern to be formed.
- According to a preferred embodiment, the guides of the elements are arranged in such a manner that a guide of one needle is arranged substantially opposite one guide of one of the elements. This is possible because the distance between at least two of the guides of an element is a multiple of the distance between the guides of the needles. This allows the number of guides of the elements along the width of the weaving machine to be equal to the number of guides of a needle. In addition, this arrangement also allows for the guides of the elements arranged in succession to be moved substantially in the same plane.
- According to a preferred embodiment, in operation, the guides of the elements arranged in succession are substantially in the same plane. This has the advantage that the elements only have to move up and down over a relatively small distance in order to form a shed with a certain opening than would be the case if they were not in the same plane. Moving the guides in the elements arranged in succession in substantially the same substantially horizontal plane allows weaving at higher weaving speeds.
- According to a simple embodiment, two elements are provided with a plurality of guides, in which the distance between the guides of each element is double the distance between the guides of the needles and in which the guides of each element can be alternately arranged along the width of the weaving machine. The two elements are in this case arranged in succession along the direction of the warp threads. This allows a leno fabric to be formed with a direction of rotation as desired for the successive leno weaves by a suitable transverse movement of the elements. In this case, the two elements can move up and down synchronously and can move to and fro in phase or in counterphase. If the elements move in counterphase and the guides of each element are provided alternately over the width of the weaving machine, an S-weave and a Z-weave are successively formed. If such elements move in phase, in each case an S-weave or a Z-weave is formed.
- According to an embodiment, three elements are provided with a plurality of guides, in which, for example, the distance between the guides of each element is treble the distance between the guides of the needles and in which the guides of each element can be arranged, for example, alternately over the width of the weaving machine. This allows a leno fabric to be formed with a direction of rotation as desired for the successive leno weaves by a suitable transverse movement of the elements. The three elements are in this case arranged in succession along the direction of the warp threads. Analogously, use can be made of four or more elements, in which the distance between the guides of each element is the quadruple or a suitable multiple of the distance between the guides of the needles and in which the guides of each element can be arranged alternately, for example over the width of the weaving machine.
- To this end, the invention comprises a device in which the warp threads guided by an element form a leno weave with warp threads guided by needles, in which the distance between guides of an element is a multiple of the distance between the guides of the needles.
- According to an embodiment, the guides of the elements are arranged such that a guide of a needle can be arranged substantially opposite one guide of one of the elements. According to one embodiment, in operation, the guides of the elements arranged in succession are substantially in the same plane.
- According to a preferred embodiment, the needles are arranged in a fixed position and the elements are arranged such that they can be moved substantially in the longitudinal direction of the needles and transverse thereto. This allows warp threads guided by an element to move up and down as well as to and fro transversely in order to bring said warp thread to a particular side of a needle in order to form a shed with a warp thread guided by the needle.
- According to an embodiment, the device comprises a drive unit in order to move at least one of the elements transversely to and fro, which drive unit comprises a controllable drive motor. This makes it possible, inter alia, to control the transverse movement of an element substantially independently of the vertical movement of the element.
- According to an embodiment, the elements are guided in a lateral guide substantially in the longitudinal direction of the needles and substantially parallel to one another.
- According to a preferred embodiment, the warp threads which are guided by the guides of the needles form the bottom plane of warp threads in the shed. This is advantageous for forming a leno fabric and for providing a drive unit for the elements.
- The invention will be explained in more detail below in order to illustrate the features and further advantages of the invention more clearly with reference to drawings of exemplary embodiments, in which:
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fig. 1 diagrammatically shows a weaving machine provided with a device according to the invention; -
fig. 2 shows a perspective view of a drive unit of the device according to the invention; -
fig. 3 shows a front view of a part offig. 2 ; -
fig. 4 diagrammatically shows a side view of a device according tofig. 1 in a first position; -
fig. 5 diagrammatically shows a front view of a device according tofig. 1 in a specific position; -
fig. 6 shows the front view fromfig. 5 in a subsequent position; -
fig. 7 shows the front view fromfig. 6 in a subsequent position; -
fig. 8 shows the front view fromfig. 7 in a subsequent position; -
fig. 9 shows a fabric which can possibly be formed; -
fig. 10 shows a variant of the part offig. 3 ; -
fig. 11 shows a variant offig. 5 ; -
fig. 12 shows another fabric which can possibly be formed; -
fig. 13 shows another variant offig. 5 ; -
fig. 14 shows an enlarged view of a holder fromfig. 1 ; -
fig. 15 shows a variant offig. 4 ; -
fig. 16 shows a perspective view of part of a device according to the invention; -
fig. 17 shows a variant offig. 16 ; -
fig. 18 shows another variant offig. 5 ; -
fig. 19 shows another variant offig. 5 ; -
fig. 20 shows another fabric which can possibly be formed; -
fig. 21 shows a variant offig. 11 ; -
fig. 22 shows part of a device according to the invention. - The weaving machine illustrated in
fig. 1 comprises a device according to the invention, in which a number ofneedles 1 are arranged at regular intervals over the width of the weaving machine. For the sake of clarity, only a limited number of needles are illustrated, but in the exemplary embodiment shown, needles are provided over the entire width of the fabric to be woven. In each case, a number ofneedles 1 are attached to aholder 2. Eachholder 2 is attached to atransverse beam 5 via anintermediate holder 3 and aplate 4. Thetransverse beam 5 extends over the entire width of the weaving machine and is fixedly attached to the lateral parts (not shown) of the weaving machine viasupport pieces 6. The vertical position of theneedles 1 may for example be adjusted or set over a certain distance by attaching aholder 2 in a suitable vertical position relative to anintermediate holder 3 or by attaching anintermediate holder 3 in a suitable vertical position relative to aplate 4. To this end, the securingbolts 7 are for example guided with play inside openings of theholder 2 and/or the securingbolts 8 are guided with play inside openings of theintermediate holder 3. Theplate 4 may analogously be attached to thetransverse beam 5. The weaving machine also comprises a support beam 9 which extends over the width of the weaving machine. The support beam 9 is securely attached for example to the lateral parts (not shown) of the weaving machine and/or to thesupport pieces 6. - The weaving machine also comprises two
elements element element 10 comprises alateral support 12 on both sides and atransverse support 13 which connects the two lateral supports 12. Analogously, theelement 11 comprises alateral support 14 on both sides and atransverse support 15 which connects both lateral supports 14. The lateral supports 12 and 14 can be moved up and down with the aid of associateddrive rods needles 1. In this case, thedrive rods drive rods WO 02/04723 drive rods 16 to 19 are attached to an associatedtransverse support drive rods drive rods Such drive rods 16 to 19 may be provided at each end of anelement elements additional drive rods 16 to 19 may engage along the width of theelements elements - The
transverse support 13 also comprises aguide piece 21 which is guided relative to aguide 22 which is fixedly attached to a frame of the weaving machine in order to limit sagging of thetransverse support 13 in the direction of the warp threads. Thetransverse support 15 also comprises aguide piece 23 of this type. The lateral supports 12 and 14 are guided in a pair of lateral guides 24 which is, for example, attached to thesupport pieces 6. As a result, theelement 10 and theelement 11 can be guided virtually parallel to one another in alateral guide 24, so that these can move in a substantially vertical plane, in a plane which is arranged substantially perdendicular to the warp threads or virtually in the longitudinal direction of theneedles 1. As illustrated infigs. 2 and3 , theelements drive unit 25, in order to be able to move a warp thread guided by anelement transverse support 13 is connected to acoupling rod 26 which is driven by acrank element 27. Thecrank element 27 is arranged so as to be rotatable about a fixedly arrangedrotary shaft 28 which is mounted on asupport 29. Thesupport 29 is fixedly arranged on a frame of the weaving machine. Acontrollable drive motor 30 is also attached to thesupport 29, for example a controllable switchable reluctance motor. An eccentric 32 is attached to thedrive shaft 31 of thedrive motor 30, which eccentric 32 is able to drive thecrank element 27 in a reciprocating manner via acoupling rod 33. Thetransverse support 15 is connected in a similar manner to acoupling rod 34 which is driven by thecrank element 27. In operation, thecoupling rods Fig. 3 also showsshaft journals lever 27 to acoupling rod - The dimensions of the
crank element 27 and of the eccentric 32 are chosen such that theelements coupling rods WO 02/04723 elements elements coupling rod 26 is connected via ahinge 37 to thetransverse support 13, while thecoupling rod 34 is connected to thetransverse support 15 via ahinge 38. Thetransverse support 15 in this case comprises anopening 39 in order to allow ahinge 37 to pass through thetransverse support 15. - As is indicated diagrammatically in
figs. 4 to 9 , a plane ofwarp threads 40 is guided through theguides 41 in theneedles 1. In the illustrated example, eachneedle 1 is provided with aguide 41. Thesewarp threads 40 come from a warp beam (not shown) and are guided toward theneedles 1, inter alia via a deflectingroller 42. The deflectingroller 42 is attached to thetransverse beam 5 by means ofsprings 43. According to a variant (not shown), the deflectingroller 42 can be securely attached to a transverse beam. - A plane of
warp threads 44 is guided throughguides 45 in theelement 10, whereas a plane ofwarp threads 46 is guided throughguides 47 in theelement 11. In this case, thewarp threads fig. 1 , theguides 45 in theelement 10 are provided onholders 48 which are arranged next to one another over the width of the weaving machine and which each comprise a number ofguides 45. Analogously, as shown infig. 1 , theguides 47 in theelement 11 are provided onholders 49 which are arranged next to one another over the width of the weaving machine and which each comprise a number ofguides 47. Theelements guides - The
warp threads warp threads reed 50. Thereed 50 is mounted on a beater in a known manner. Thewarp threads warp threads warp threads 40 which are guided through the fixedly arrangedneedles 1, and the top plane of warp threads is formed by thewarp threads element -
Fig. 5 shows the position of theelements needles 1 with respect to one another in a first position for a device as illustrated infigs. 1 to 4 . The guides of theelements guide 41 of aneedle 1 is arranged substantially opposite or near aguide elements guides elements guides 41 ofneedles 1. The distance X between theguides 45 of theelement 10 is in this case equal to the distance Y between theguides 47 of theelement 11, whereas these distances X and Y are double, that is to say twice, the distance Z between theguides 41 of theneedles 1. Theelement 10 is in this case arranged such that thewarp threads 44 are to the right of the associatedneedles 1, whereas theelement 11 is in this case arranged such that thewarp threads 46 are to the left of the associated needles. Subsequently, theelements fig. 6 . In this position, a weft thread can be introduced. In the meantime, theelement 10 moves to the left and theelement 11 moves to the right, and both together are being moved downward to the position shown infig. 7 . Then, theelements fig. 8 . In this position, a subsequent weft thread can be introduced. In the meantime, theelements fig. 5 . Then the successive positions offigs. 5 to 8 are repeated, in which eachwarp thread element needle 1 and transverse thereto. In this way, a fabric can be produced as illustrated infig. 9 , in whichwarp threads weft threads 67 form a fabric. - It will be clear that the movement of the
elements needles 1 and the movement of theseelements needles 1 can partly take place simultaneously, despite the fact that both movements are driven separately. It will be clear that theelements - As is illustrated in more detail in
figs. 5 to 8 , the twoelements guides guides element guides 41 of theneedles 1. Theguides guide 45 and aguide 47 are arranged in succession. In operation, theguides elements - As can be seen in
fig. 3 , the length B of the crank arm of thecrank element 27 by which theelement 11 is moved via thecoupling rod 34 is slightly larger than the length A of the crank arm of thecrank element 27 with which theelement 10 is controlled via thecoupling rod 26. This allows theelement 11 which is located further from the beat-upline 52 of thefabric 53 to move relatively more transversely than theelement 10 which is closer to the beat-upline 52 of thefabric 53. Consequently, it is ensured that thewarp threads 46 are moved transversely over such a distance that thewarp threads 46 can substantially form the same angle to the warp direction as thewarp threads 44. This is advantageous in order to move thewarp threads needles 1. - If, as indicated in
fig. 10 , thecoupling rods crank element 27, the device according to the invention can be used to form a leno weave in a manner analogously to that described inWO 02/04723 coupling rod 26 is attached using ashaft journal 68. If thecoupling rod 26 in the embodiment offig. 10 were attached at theshaft journal 64, as indicated by a dashed line, a device similar to that offig. 3 would result. -
Fig. 11 shows a position of theelements fig. 5 . With this embodiment, bothelements fig. 10 , be moved together to the left or to the right, albeit on a slightly different course. In this manner, a fabric can be produced as illustrated infig. 12 , in whichwarp threads weft threads 67 form a fabric. It will be clear that in this case theelements - Analogously to
fig. 5 ,fig. 13 shows an embodiment in which threeelements guides guides element guides 41 of theneedles 1. In this case, theguides element element element warp threads - A
specific holder 48, as illustrated infig. 1 , is shown on an enlarged scale infig. 14 . Providingholders guides guides holder - Although it is advantageous for the
needles 1 to be fixedly arranged and for theelements needles 1 and transverse thereto, the needles can also be arranged so as to be upwardly and downwardly movable. This allows, for example, the course of theelements needles 1 to be limited from the top position to approximately half the course illustrated infig. 4 . Infig. 4 , the course is determined by the opening of theshed 51. In this case, theneedles 1 have to move upward approximately halfway along the abovementioned course, so that awarp thread needle 1 at the point in time when thewarp threads needles 1. - It is advantageous if the
warp threads 40 which are guided by theguides 41 of theneedles 1 form the bottom plane of warp threads of theshed 51. According to a variant shown infig. 15 , thewarp threads 40 which are guided through theneedles 1 may of course form the top plane of warp threads of theshed 51. In this case, theneedles 1 have to point upward. Theelements warp threads needles 1 transversely to the other side of theneedles 1. The terms top and bottom in the description are thus relative terms which are associated with a specific embodiment. -
Fig. 16 shows a variant in which theelements elongate support element guides warp thread elongate support element transverse support holder needles 1 are arranged analogously tofig. 1 . -
Fig. 17 shows another variant in which each of theelements elongate support element guides warp thread elongate support element large opening warp thread elongate support element warp threads guides -
Fig. 18 shows another variant in which the distance betweenguides element guides 41 of theneedles 1. In this case, the distance between at least two of theguides 45 of theelement 10 is a multiple of the distance between theguides 41 of theneedles 1. In this embodiment, the distance between theguides 47 of theelement 11 is in each case a multiple of the distance between theneedles 1. Obviously, other such variants are also possible which allow certain specific leno weaves to be formed. - According to a variant (not shown), use can be made of four or more elements according to the invention, in which the distance between the guides of each element can be a suitable multiple of the distance between the guides of the needles and in which the guides of each element are arranged according to a specific pattern along the width of the weaving machine. In this case, a multiple is understood to mean double, treble, quadruple, quintuple or any other multiple.
- The use of
holders transverse support shed 51. This allows the use of a selvage device 63 which, together with a device according to the invention, can form a fabric. The warp threads which are controlled by the selvedge device 63 are in this case essentially unimpeded by the transverse supports 13 and 15. The selvage device 63 may be designed, for example, as illustrated inEP 772.703 B1 - According to a variant (not shown), the transverse movement of the
elements drive motor 30, an eccentric 32, acrank element 27 and the like. According to a variant (not shown), each element can be driven by a dedicated controllable drive motor. Of course, it is also possible to derive this transverse movement from another drive shaft of the weaving machine, for example via a system of cams or a system of rods which is, for example, driven by a drive shaft which is connected to and rotates synchronously with the drive shaft of the sley. - Although in each case only one warp thread is guided by a specific guide in the examples shown, it will be clear that two or more warp threads can be guided together by a specific guide. It is likewise possible to replace such a guide by two or more guides which are arranged in close proximity to one another and which in each case guide at least one warp thread. This allows special leno fabrics to be formed.
- Although it is preferable to arrange the needles uniformly over the width of the weaving machine and to arrange guides of one of the elements substantially opposite the needles, the needles and the associated guides of the elements can also be arranged at varying distances along the width of the weaving machine. This allows, for example, special leno fabrics to be formed.
- Although any type of warp thread can be used with a device according to the invention, the device according to the invention is particularly suitable for weaving relatively
thick warp threads 40 under high tension together with relativelythin warp threads thin warp threads thick warp threads 40. This results in a leno fabric in which the relativelythick warp threads 40 remain substantially stretched and are not tied around or about weft threads. - In case an
element element elements elements - As described in
fig. 19 , a device according to the invention can also be used in combination with another device for forming leno weaves. In this case, anelement 69 is for example provided which has guides 70 for guidingwarp threads 71, in which the distance between theguides 70 is equal to the distance between theguides 41 of theneedles 1. The frame-shapedelement 69 has anopening 72 which allowswarp threads element 69. Theelement 69 can be moved transversely to and fro as well as up and down by means of a drive unit in a manner analogous to that of theelements elements element 69 is moved in counterphase to theelements fig. 20 , in whichwarp threads weft threads 67 form a fabric. -
Fig. 21 shows another variant in which, in addition to theelements elements element 73 comprisesguides 75 forwarp threads 76, whereas theelement 74 comprisesguides 77 forwarp threads 78. Theelements opening warp threads elements elements elements fig. 20 . -
Fig. 22 shows a variant, in which theelements warp threads element 10 in this case comprises a plurality ofopenings 81 for passingwarp threads 46 through.Such elements fig. 5 in order to manufacture a leno fabric according to the invention. - It will be clear that the device according to the invention can also be replaced by a device as disclosed in
WO 02/04723 DE 466.340 . This makes it possible, for example, to modify a weaving machine comprising a device according to the invention to form a weaving machine according to the state of the art and subsequently to form certain known fabrics. It is, for example, also possible to replace at least oneelement warp threads 40 are in each case tied in on both sides by a warp thread from a first element and by a warp thread from a second element. - It will be clear that the invention may be used on any type of weaving machine, such as an air weaving machine, a gripper weaving machine, a water jet weaving machine, a projectile weaving machine, a gripper shuttle weaving machine or another type of weaving machine. The device according to the invention also has the advantage that it can be fitted on practically any existing weaving machine in a simple manner.
- A method and a device according to the invention inter alia allow a leno fabric to be formed having both leno weaves with an S-weave and leno weaves with a Z-weave which are woven next to one another, both alternately as well as according to a specific pattern.
- A method according to the invention in which the distance between the
warp threads guides element warp threads 40 which are guided inguides 41 of theneedles 1 is preferably used with the aid of a device according to the invention. - It will be clear that a leno fabric does not have to be formed over the entire width of the weaving machine. According to one option, it is for example possible to remove
certain holders holders - It will be clear that if the
elements - The method and device according to the invention are of course not limited to the embodiments described by way of example and illustrated in the figures, but can be designed according to different variants and combinations of the illustrated embodiments without departing from the scope of the invention.
Claims (20)
- A method for forming sheds for the production of leno fabrics (53) by using a plurality of needles (1) which guide a plurality of warp threads (40) and by using at least one element (10, 11, 54, 73, 74) which guides a plurality of warp threads (44, 46, 56, 76, 78) and which moves the plurality of warp threads (44, 46, 56, 76, 78) along the needles (1) and in transverse direction transverse to the needles (1), characterized in that the at least one element (10, 11, 54, 73, 74) guides the plurality of warp threads (44, 46, 56, 76, 78) at distances in the transverse direction which are a multiple of the distances in which the warp threads (40) are guided by the needles (1).
- The method according to claim 1, characterized in that two or more elements (10, 11, 54, 73, 74), which each guide a plurality of warp threads (44, 46, 56, 76, 78), are arranged in succession of which at least one element guides the warp threads in distances which are a multiple of the equal distances in which the warp threads (40) are guided by the needles (1).
- The method as claimed in one of the claims 1 or 2, characterized in that guides (45, 47, 55, 75, 77) of the elements (10, 11, 54, 73, 74) are arranged in such a manner that one guide (41) of one needle (1) is arranged substantially opposite one guide (45, 47, 55, 75, 77) of one of the elements (10, 11, 54, 73, 74).
- The method as claimed in claim 3, characterized in that the distance between at least two of the guides (45, 47, 55, 75, 77) of an element (10, 11, 54, 73, 74) is a multiple of the distance between the guides (41) of the needles (1).
- The method according to claims 3 to 4, characterized in that the number of guides (45, 47, 55, 75, 77) in the elements (10, 11, 54, 73, 74) along the width of the weaving machine is equal to the number of guides (41) of the needles (1).
- The method as claimed in one of claims 1 to 5, characterized in that the elements (10, 11, 54, 73, 74) are arranged in succession along the warp direction.
- The method as claimed in claim 6, characterized in that, in operation, the guides (45, 47, 55, 75, 77) of the elements (10, 11, 54, 73, 74) arranged in succession are substantially in the same plane.
- The method as claimed in one of claims 1 to 7, characterized in that two elements (10, 11) are provided with a plurality of guides (45, 47), in which the distance between the guides (45, 47) of each element (10, 11) is double the distance between guides (41) of the needles (1) and in which the guides (45, 47) of each element (10, 11) are alternately arranged along the width of the weaving machine.
- The method as claimed in one of claims 1 to 8, characterized in that three elements (10, 11, 54, 73, 74) are provided with a plurality of guides (45, 47, 55, 75, 77), in which the distance between the guides (45, 47, 55, 75, 77) of each element (10, 11, 54, 73, 74) is treble the distance between guides (41) of the needles (1) and in which the guides (45, 47, 55, 75, 77) of each element (10, 11, 54, 73, 74) are arranged alternately over the width of the weaving machine.
- The method for forming sheds for the production of leno fabrics (53) as claimed in one of claims 1 to 9 used for forming a leno fabric (53) on a weaving machine, wherein the needles (1) of the plurality of needles (1) are arranged over the width of the weaving machine and are each provided with a guide (41) for guiding a warp thread (40), wherein the at least one element (10, 11, 54, 73, 74), which moves the plurality of warp threads (44, 46, 56, 76, 78) along the needles (1) and transverse to the needles (1), is provided with a plurality of guides (45, 47, 55, 75, 77) for guiding a warp thread (44, 46, 56, 76, 78), and wherein the method further comprises forming leno weaves with warp threads (44, 46, 56, 76, 78) guided by the at least one element (10, 11, 54, 73, 74) and warp threads (41) guided by needles (1).
- A device for forming sheds for the production of leno fabrics (53) having a plurality of needles (1) each provided with a guide (41) for guiding a warp thread (40) and at least one element (10, 11, 54, 73, 74) provided with a plurality of guides (45, 47, 55, 75) for guiding a warp thread (44, 46, 56, 76, 78) which element is movable to move the warp threads (44, 46, 56, 76, 78) guided by it along the needles and in transverse direction transverse to the needles, characterized in that the guides (45, 47, 55, 75) of the at least one element (10, 11, 54, 73, 74) are arranged in the transverse direction in distances which are a multiple of the distances in which the guides (41) of the needles (1) are located.
- The device according to claim 11, characterized in that two or more elements (10, 11, 54, 73, 74) are provided in succession of which at least one element is provided with guides (45, 47, 55, 75, 77) in distances which are a multiple of the equal distances in which the guides (41) of the needles (1) are located.
- The device as claimed in one of the claims 11 to 12, characterized in that the guides (45, 47, 55, 75, 77) of the elements (10, 11, 54, 73, 74) are arranged in such a manner that a guide (41) of a needle (1) is arrangeable substantially opposite one guide (45, 47, 55, 75, 77) of one of the elements (10, 11, 54, 73, 74).
- The device as claimed in one of claims 11 to 13, characterized in that the elements (10, 11, 54, 73, 74) are arranged in succession along the warp direction.
- The device as claimed in one of claims 11 to 14, characterized in that, in operation, the guides (45, 47, 55, 75, 77) of the elements (10, 11, 54, 73, 74) arranged in succession are substantially in the same plane.
- The device as claimed in one of claims 11 to 15, characterized in that the needles (1) are arranged in a fixed position and the elements (10, 11, 54, 73, 74) are arranged such that they can be moved substantially in the longitudinal direction of the needles (1) and transverse thereto.
- The device as claimed in one of claims 11 to 16, characterized in that the device comprises a drive unit (25) in order to move at least one of the elements (10, 11, 54, 73, 74) transversely to and fro, which drive unit (25) comprises at least one controllable drive motor (30).
- The device as claimed in one of claims 11 to 17, characterized in that the elements (10, 11, 54, 73, 74) are guided in a lateral guide (24) substantially in the longitudinal direction of the needles (1) and substantially parallel to one another.
- The device as claimed in one of claims 11 to 18, characterized in that the warp threads (40) which are guided by the guides (41) of the needles (1) form the bottom plane of warp threads in the shed (51).
- Use of a device for forming sheds as claimed in one of claims 11 to 19 for forming a leno fabric (53) on a weaving machine, wherein the needles (1) of the plurality of needles (1) are arranged over the width of the weaving machine.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE2005/0422A BE1016753A3 (en) | 2005-09-02 | 2005-09-02 | METHOD AND DEVICE FOR FORMING A LENO TISSUE WITH A WEAVING MACHINE. |
PCT/EP2006/008562 WO2007025765A1 (en) | 2005-09-02 | 2006-09-01 | Method and device for forming a leno fabric on a weaving machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1920094A1 EP1920094A1 (en) | 2008-05-14 |
EP1920094B1 true EP1920094B1 (en) | 2017-12-20 |
Family
ID=36240912
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06777143.6A Active EP1920094B1 (en) | 2005-09-02 | 2006-09-01 | Method and device for forming a leno fabric on a weaving machine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1920094B1 (en) |
CN (1) | CN101253287B (en) |
BE (1) | BE1016753A3 (en) |
WO (1) | WO2007025765A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007043111A1 (en) | 2007-08-31 | 2009-03-05 | Picanol N.V. | Frame for leno weaving machine, has needle lamellae having recess delimited with respect narrow sides by legs bent in opposite directions in such a way that free passage is provided in running direction of ground threads |
US7992611B2 (en) | 2008-09-15 | 2011-08-09 | The Goodyear Tire & Rubber Company | Pneumatic tire with a leno weave flipper or chipper |
CN103243458A (en) * | 2013-05-20 | 2013-08-14 | 苏州华毅机械有限公司 | Edge weaving method of weaving machine |
CN105386213A (en) * | 2015-12-15 | 2016-03-09 | 江苏华跃纺织新材料科技有限公司 | Polytetrafluoroethylene filament double-warp-yarn series connection single-weft-yarn mesh type filter felt base fabric |
CN107829191A (en) * | 2017-12-26 | 2018-03-23 | 聊城由甲纺织机械有限公司 | A kind of harness frame in aweaving machine provided with transverse moving mechanism |
DE202020002061U1 (en) | 2020-05-12 | 2020-05-29 | Sybille Castens | Loom with movable guide trees |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE466340C (en) * | 1925-05-14 | 1928-10-06 | Grossenhainer Webstuhl Und Mas | Device for the production of leno fabrics |
CN87204114U (en) * | 1987-04-08 | 1988-04-27 | 株洲玻璃厂 | Needle set-out cross weaving opening device |
EP1101850A1 (en) * | 1999-11-16 | 2001-05-23 | Sulzer Textil AG | Device to form a leno weave |
-
2005
- 2005-09-02 BE BE2005/0422A patent/BE1016753A3/en not_active IP Right Cessation
-
2006
- 2006-09-01 WO PCT/EP2006/008562 patent/WO2007025765A1/en active Application Filing
- 2006-09-01 EP EP06777143.6A patent/EP1920094B1/en active Active
- 2006-09-01 CN CN2006800315880A patent/CN101253287B/en active Active
Also Published As
Publication number | Publication date |
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WO2007025765A1 (en) | 2007-03-08 |
BE1016753A3 (en) | 2007-06-05 |
EP1920094A1 (en) | 2008-05-14 |
CN101253287A (en) | 2008-08-27 |
CN101253287B (en) | 2011-04-20 |
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