JP2015045118A - Warp yarn-stopping device equipped with guide rail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a warp yarn-stopping device prolonged in usable life, facilitated in replacement of a warp yarn, and particularly facilitated in handling of a guide rail.SOLUTION: The invention is related to a guide rail 55 for a warp yarn-stopping device 23 of a weaving machine 20. The guide rail 55 has a width FB in a smaller width direction B than a hight FH in a hight direction H. The guide rail 55 is structured as a hollow profile body 65 which has at least one hollow 69. The hollow profile body 65 is formed with a bent part. Specifically, it is produced by processing tabular sheet pieces adopting a forming method which does not generate cut pieces, for example, a rollforming. As a result, a wall 66 of the hollow profile body 65 is capable of being integrally formed. The wall 66 surrounds the hollow 69.

Description

  The present invention relates to a warp yarn stopping device provided with a guide rail.

  The warp stop device is used in weaving machines. The warp stop device monitors the cutting of the warp during operation of the weaving machine. The warp stop device can indicate warp breakage and / or stop the weaving machine. This has the advantage of avoiding misweaving of the produced fabric.

  The warp stop device has a plurality of contact rails orthogonal to the extending direction of the warp. The plurality of contact rails have two electrical contacts that are insulated from each other. The contact rail usually has a contact sheet (Kontaktelamelle, dropper) surrounding it. Each thin plate is supported by warp and drops onto the contact rail when the warp is cut. Then, the two electrical contacts of the contact rail are connected and recognized by an appropriate electrical configuration. In this way, the warp cutting is instantly notified.

  The warp stop device has a plurality of guide rails parallel to the plurality of contact rails. The guide rail is arranged at a certain distance from a thin plate adjacent in the warp direction. The guide rail supports the warp and the thin plate, and prevents the warp from being tangled or entangled even if the warp tension is weakened.

  Contact rails and / or guide rails are typically supported by one or more spacer elements having cuts, and the contact rails and / or guide rails are placed in the cuts. These spacer elements are usually made of plastic.

  Replacing the warp yarn on the weaving machine takes time. In the presence of a warp stop, each warp is guided through a thin plate. First, after removing the guide rail in the warp stop device and replacing it with a new warp, the guide rail is inserted again. The guide rail is up to several meters long depending on the weaving machine.

  A warp stop device is known from Patent Document 1, for example. This warp stop device has two parallel guide rails adjacent to the contact rail, each guide rail being formed by a hollow cylindrical tube, whose cross-sectional profile is circular.

  This type of warp stop device is further disclosed in Patent Document 2.

European Patent Application No. 05399061 German Patent Application No. 1216209

  The object of the present invention is to increase the usable life of the warp stop device, to facilitate the replacement of the warp, and in particular to facilitate the handling of the guide rail.

  The guide rail of the warp stop device extends in the longitudinal direction. The longitudinal direction of the guide rail is a direction orthogonal to the warp when used in a weaving machine. This guide rail has the same cross-sectional shape as a whole. The length of the guide rail in the width direction is preferably shorter than the length of the guide rail in the height direction. The width direction and the height direction are orthogonal to each other and also orthogonal to the longitudinal direction. In the use position of the weaving machine, this width direction is the direction of the warp.

  The guide rail is configured as a hollow profile body. The wall of the guide rail surrounds at least one hollow. The hollow extends in the longitudinal direction over the entire guide rail. The wall thickness of the hollow profile body is preferably constant.

  By creating the guide rail as a hollow profile body, its weight can be greatly reduced. When the weaving machine is operated, oscillation and vibration are generated. At least minute movements of the guide rail relative to the parts of the warp stop that support the guide rail cannot be excluded and can be damaged during operation of the weaving machine. By reducing the weight of the guide rail, the pressure on the components of the warp stop device that supports the guide rail, such as plastic spacer elements, is reduced, and the usable life of the warp stop device is increased.

  The operator's process when changing the warp is simplified. Furthermore, according to the structure of the guide rail according to the present invention, the required specification for the material can be lowered, and the production cost of the guide rail can be reduced.

  At least one hollow is open at a certain position, more precisely by a longitudinal gap. Therefore, this hollow is opened by a vertically long gap at a position where the entire length of the guide rail along the vertically long direction exists.

  In a preferred embodiment of the invention, the guide rail walls are formed by a spanlos forming process, in particular a roller forming (Walzprofilieren). Accordingly, the guide rail can be formed from a sheet-like metal. No further processing is necessary after bending or roller forming. Since there are no cutting points, the cut pieces do not mix with or adhere to the material, and there is no risk of damaging the warp of the weaving machine.

  The hollow profile body exhibits a damping effect in the height direction when oscillation or vibration occurs. The hollow profile body is elastically deformable in the height direction. This is especially the case when the hollow profile body is formed as a molded or bent wall made of a uniform material without seams or joints. The stress on the components of the warp stop device supporting the guide rail is thus further reduced.

  This wall has in particular two longitudinal edges parallel to the longitudinal direction. The distance from one of the two parallel longitudinal edges to the longitudinal midplane between them is preferably less than or equal to half the width of the guide rail. These longitudinal edges can thus be arranged in the outer profile of the cross-sectional profile of the hollow profile body.

  In practical examples, the hollow longitudinal gap is delimited by one longitudinal edge and an adjacent wall or by two longitudinal edges of the molded sheet. When oscillation or vibration occurs, the vertical gap avoids contact wear between the vertical edge of the wall and the wall.

  The guide rail walls are preferably made of a uniform material for joints and joints. For example, the guide rail may be made of sheet metal having a certain thickness. This sheet preferably comprises a non-corrosive alloy, in particular an iron alloy.

  As described above, the guide rail or the guide body can be made from a metal sheet by molding. Specifically, this sheet has a constant thickness. The thickness of the seat is preferably equal to or less than one third of the length of the guide rail in the width direction.

  On at least one side in the height direction, the wall has a wall with at least one curvature. The curvature may be associated with a constant or varying curvature. The minimum curvature corresponds to at least the thickness of the sheet forming the wall, that is, the thickness of the wall. In particular, sharp edges and angles are avoided on the side where the warp is assigned at the guide rail mounting position. There is only a curved and / or horizontal wall on at least one side in the height direction of the guide rail.

  Below the horizontal wall is a wall that extends in the horizontal direction to be constructed.

  In a preferred aspect of the present invention, the wall of the guide rail that forms the hollow profile body has a wall portion that is inclined with respect to the first longitudinal intermediate plane. In some embodiments, the wall extends through the first longitudinal intermediate plane. The first longitudinal intermediate plane through which the guide rail penetrates is parallel to the plane extending in the height direction and the longitudinal direction. Preferably, the wall extending obliquely with respect to the first longitudinal intermediate plane can terminate in one of the two longitudinal edges.

  In a preferred embodiment of the present invention, the guide rail is designed symmetrically with respect to the first longitudinal intermediate plane. Alternatively or additionally, the guide rail may be formed symmetrically with respect to the second longitudinal intermediate plane. The second vertically long intermediate plane is parallel to a plane extending in the width direction and the vertically long direction.

  The guide rail has a closed contact surface or at least one curved contact edge extending in the longitudinal direction on two opposite sides aligned in the width direction. In particular, each contact surface or at least one contact edge defines an outer contour plane. Specifically, the two outer contour planes are arranged parallel to each other. The distance between the two outer contour planes corresponds to the width of the guide rail in the width direction. Contact of the thin plate adjacent to the guide rail occurs at these outer contour planes. The sheet can thus abut against the contact surface or at least one contact edge.

  As another effective aspect of the present invention, the guide rail has at least two hollows at both tops in the height direction.

  Effective aspects and features of the invention will be apparent from the claims, specification and drawings. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

It is a schematic side view of a weaving machine. It is a schematic top view of the warp stop device of the weaving machine shown in FIG. FIG. 3 is a perspective view of a contact rail and a contact thin plate of the warp stop device shown in FIG. 2. It is a schematic sectional drawing of the contact thin plate shown in FIG.2 and FIG.3. It is a schematic side view of the warp stop device which has a contact rail and a guide rail. It is sectional drawing of the guide rail of the warp stop device by the Example of this invention. It is sectional drawing of the guide rail of the warp yarn stop apparatus by another Example of this invention. It is sectional drawing of the guide rail of the warp yarn stop apparatus by another Example of this invention. It is sectional drawing of the guide rail of the warp yarn stop apparatus by another Example of this invention. It is sectional drawing of the guide rail of the warp yarn stop apparatus by another Example of this invention. It is sectional drawing of the guide rail of the warp yarn stop apparatus by another Example of this invention. It is sectional drawing of the guide rail of the warp yarn stop apparatus by another Example of this invention. It is sectional drawing of the guide rail of the warp yarn stop apparatus by another Example of this invention. It is sectional drawing of the guide rail of the warp yarn stop apparatus by another Example of this invention.

  FIG. 1 is a schematic diagram of a general configuration of a weaving machine 20. The back roller 21 supplies a plurality of warp yarns 22 along the E direction in parallel to each other in the warp yarn direction K. The warp yarn 22 passes through a warp stop device 23 and further passes through one or more thin plates (Kontaktelamelle, dropper) 24. After passing through the thin plate 24, the plurality of warps 22 are guided to the corresponding healds arranged in the plurality of heald frames 25. Each heddle frame 25 moves in the operating direction A, which usually coincides with the vertical direction. This opens and closes the mouth. The number of the heddle frames 25 varies depending on the fabric structure to be manufactured. FIG. 1 shows the case of two heald frames 25 as an example. The weft thread 26 is guided to the opening of the neck and driven into the pre-weave 28 by the lead 27. The woven fabric 29 is wound up via a cross roller 30.

  The warp stop device 23 is schematically shown in FIGS. The warp stop device 23 has a fastening device 34 and fastens the warp stop device 23 to the machine frame 35 of the weaving machine 20. The fastening device 34 has two fastening elements 36 extending in the width direction B, which are connected to a machine frame 35. Two thread support cylinders 37 that are spaced apart from each other are disposed between the two fastening elements 36. The fastening element 36 and the thread support cylinder 37 thus form a mounting frame. The yarn support cylinder 37 extends in the longitudinal direction L and is orthogonal to the width direction B.

  The longitudinal direction L is parallel to the warp surface E and extends to the mounting position of the warp stop device 23. The width direction B is parallel to the warp surface E or inclined by 10 to 15 degrees at the maximum.

  The fastening device 34 is provided with a plurality of contact rails 40. The contact rails 40 extend in parallel with each other along the longitudinal direction L. The contact rail 40 is disposed above the warp surface E when viewed from the operation direction A side of the weaving machine 20 and extends above the warp yarn 22.

  FIG. 4 shows a schematic cross section of the contact rail 40. The contact rail 40 has a first electrical contact portion 41 and a second electrical contact portion 42. These two electrical contact portions 41, 42 are electrically separated from each other by an insulator 43. As an example, the first electrical contact portion 41 has a rectangular cross section and extends in the longitudinal direction L along the contact rail 40. In this embodiment, the second electrical contact portion 42 has a U-shaped cross section. The first electrical contact portion 41 and the insulator 43 are disposed inside the second electrical contact portion 42. The contact portions 41 and 42 are electrically connected to the corresponding electrical contacts 44 and 45, respectively.

  A contact thin plate 48 is assigned to each warp yarn 22. The contact thin plate 48 is made of a conductive material. Each warp 22 is guided through the warp hole 49 of the corresponding contact sheet 48. If the warp 22 is sufficiently tensioned, the contact sheet 48 is supported by the warp 22 as shown in FIG. Each contact sheet 48 further has a sheet slot 50 in its height direction H, the height direction preferably corresponding to the operating direction A of the weaving machine 20 and, for example, corresponding to the vertical direction. The contact rail 40 passes through the corresponding sheet slot 50. The contact leg 51 of the contact lamina 48 straddles the contact rail 40 and its two electrical contact portions 41, 42. The contact thin plate 48 is supported by the corresponding warp 22, and the contact leg portion 51 is disposed at a position away from the two electrical contact portions 41 and 42 (see FIG. 3). Once the warp yarn 22 is not sufficiently tensioned, that is, when the warp yarn 22 is cut, the contact thin plate 48 drops and stops in the height direction H, and the contact leg 51 reaches the upper end of the contact portions 41, 42, Electrically connected to them. This electrical connection is recognized by electrical contacts 44, 45. In this way, the warp stopping device 23 can detect the cutting of the warp, and necessary countermeasures associated therewith are taken automatically or manually by the operator.

  FIG. 2 schematically shows a part of the warp yarn 22 and the contact sheet 48. Each warp 22 is assigned exactly one contact sheet 48. Different contact rails 40 are assigned to the contact thin plates 48 of the adjacent warp yarns 22.

  A guide rail 55 extends in the longitudinal direction L parallel to the contact rail 40 and is supported by the fastening device 34. The guide rail 55 is disposed between the two contact rails 40 in the width direction B. In the height direction H, each guide rail 55 is arranged at a distance from the contact rail 40. There is a space for passing the warp yarn 22 between the contact rail 40 and the guide rail 55 (see FIG. 5). Therefore, the guide rail 55 is located below the warp surface E at the installation position of the warp stop device 23.

  Both longitudinal end portions of each guide rail 55 are supported by the fastening element 36 of the fastening device 34. The length of the guide rail 55 between the two fastening elements 36 can be 1 or several meters depending on the weaving machine. The warp stop device 23 of the present embodiment has one or a plurality of support members 56.

  FIG. 5 is a schematic view of the warp stopping device 23 in the region of the support 56 as viewed from the longitudinal direction L. The support 56 is fastened to the two thread support pipes 37 via the two fastening units 57, respectively. An intermediate support 58 extending in the width direction B connects the two fastening units 57. The intermediate support 58 supports the first spacer element 59 and the second spacer element 60. Each spacer element 59, 60 has a notch or slot that is open at the top in the height direction H in this example. Each spacer element 59, 60 is held by a frictional force accompanying pressing against the intermediate support 58 or the support 56 or by locking by engagement of the shapes. Each contact rail 40 passes through a slot in the first spacer element 59. The spacing of the slots 61 in the width direction B defines the distance between adjacent contact rails 40 and supports them against vibration. The distance between the slots 61 of the second spacer element 60 defines the distance in the width direction B between the adjacent guide rails 55. Each guide rail 55 passes through each slot 61 of the second spacer element 60. The cross-sectional profile of the slot 61 of the first spacer element 59 is adjusted according to the cross-sectional shape of the contact rail 40. The cross-sectional shape of the slot 61 of the second spacer element 60 is adjusted according to the cross-sectional contour of the guide rail 55. The slot 61 of each spacer element 59, 60 preferably has a rectangular cross section when viewed in the longitudinal direction L.

  Conventionally, the guide rail 55 is a so-called rod rod, but in the present invention, it is intended to be a hollow profile body 65. In this embodiment, the hollow profile body 65 is preferably composed of a wall 66 having a constant thickness WD. The wall 66 is made of a uniform material without joints or joints. Preferably, the walls 66 are produced from sheet-like sheet pieces by a chip-free molding process, in particular by roller molding (Walzprofilieren). In this example, the wall 66 is made of a non-corrosive alloy. The wall thickness WD corresponds to the thickness BD of the sheet on which the wall 66 is formed, at least in cross section. In the curved portion of the wall 66, the wall thickness WD may deviate from the original sheet thickness BD due to the flesh flow during bending. However, at least in the flat wall portion, the wall thickness WD corresponds to the original sheet thickness BD. The sheet thickness BD and the wall thickness WD are shown in FIG. 6 as an example. The above relationship also applies to the other embodiments shown in FIGS.

  The hollow profile body 65 of this example is formed by a single wall 66. The wall 66 has at least one wall portion 67 of curvature R and at least one flat wall portion 68. The flat wall 68 means a wall parallel to the surface. The curvature R of the wall 67 indicates a minimum value corresponding to the thickness BD of the sheet on which the wall 66 or the hollow profile body 65 is formed. In the embodiment, the sheet thickness BD of the flat wall portion 68 or the wall thickness WD is preferably 0.4 mm.

  The curved wall 67 in this example has a constant curvature R, and extends along the arc, that is, along a quadrant or semicircle in the cross section.

  The hollow profile body 65 surrounds at least one hollow 69 extending in the longitudinal direction L along the hollow profile body 65 or the guide rail 55. The hollow 69 is surrounded by at least three wall portions 67 and 68, and is opened to the outside by a vertically long gap 70 in one place. The gap length of the gap 70 in the direction orthogonal to the longitudinal direction is equal to or less than the width FB of the guide rail 55 or the hollow profile body 65. The width FB of the guide rail 55 in the width direction B is the minimum between the parallel outer contour planes AK that are arranged so as to be orthogonal to the width direction and that contact the guide rail 55 from both opposite sides without crossing the guide rail. Determined by distance. Thereby, the height FH of the guide rail 55 is determined by the minimum distance between two parallel horizontal planes that are arranged so as to be orthogonal to the height direction H and that do not intersect with the guide rail 55. The height FH of the guide rail 55 is larger than its width FB. According to this example, the height FH of the guide rail 55 is at least 3 to 5 times greater than its width FB. In this embodiment, the height FH is in the range of 10 mm to 20 mm, preferably in the range of 15 mm to 18 mm. The width FB of the guide rail 55 is in the range of 2 mm to 5 mm, and preferably in the range of 2 mm to 3 mm. These values preferably have a tolerance in the range of 0.1 mm to 0.2 mm. The width FB of the guide rail 55 is at least three times the sheet thickness BD of the sheet portion where the hollow profile body 65 is formed.

  The hollow profile body 65 has two parallel longitudinal edges 71. All longitudinal gaps 70 are defined by at least one longitudinal edge 71 of the hollow profile body 65 extending in the longitudinal direction L in some embodiments. In the embodiment shown in FIGS. 6, 7, and 13, the vertical gap 70 is located between two vertical edges 71. In other embodiments (FIGS. 8, 9, 10, 11, 12, and 14), the longitudinal gap 70 is defined by one of the two longitudinal edges 71 and the nearest wall. In the embodiment of FIG. 12, the vertical gap 70 is not surrounded by one of the two vertical edges 71.

  In some embodiments, a plurality of hollows 69 are arranged along the height direction H (see FIGS. 9, 10, 12, and 14). Two hollows 69 are opened through the vertically long gap 70.

  The plurality of flat walls 68 extend in parallel or are inclined with respect to the outer contour plane AK or with respect to the first longitudinal intermediate plane M1 penetrating the guide rail 55. The first vertically long intermediate plane M1 is orthogonal to the width direction B, and is therefore arranged in parallel with the outer contour plane AK in this embodiment.

  The outline of the guide rail 55 is preferably symmetric with respect to the first vertically long intermediate plane M1. 7 and 13 only, the guide rail 55 is symmetric with respect to the first vertically long intermediate plane M1.

  The apex 72 of the guide rail 55 assigned to the warp yarn 22 or warp surface E in the height direction H does not have a sharp edge or angle. In the preferred embodiment, the top 72 is formed by a curved wall 67. The curvature R of the curved wall portion 67 may be constant. The curvature may change along the wall.

  As a modification of the illustrated embodiment, the one or more curved walls 67 may be replaced by two or more curved walls joined by a flat wall 68 therebetween. In general, this type of deformation will be described by taking the top 72 as an example. Instead of the plurality of curved walls 67, two curved walls 67 having a curvature similar to that of the flat wall 68 may be used. Although this modification is illustrated only in the bending portion of FIG. 6, it can also be applied to the other bending portion 62 illustrated.

  The guide rail 55 or the hollow profile body 65 has a flat wall portion 68 on the outer contour plane AK that forms a contact surface 75 for a contact thin plate adjacent thereto. Instead of this kind of contact surface 75, at least one contact end (edge) 76 formed on the outer contour plane AK may be provided. The contact end 76 may be formed by the curved wall portion 67, or may be formed by a relay point between the flat wall portion 68 and the curved wall portion 67. If there are several support ends 76 at the side ends in the width direction B of the guide rail 55, they define an outer contour plane AK.

  The second vertically long intermediate plane M2 orthogonal to the first vertically long intermediate plane M1 and extending in the width direction B and the vertically long direction is a symmetric line of the guide rail 55 or the hollow profile main body 65. The hollow profile body 65 shown in FIGS. 6, 10, 12, and 14 is designed symmetrically with respect to the second vertically long intermediate plane M2.

  The first embodiment of the hollow profile body 65 shown in FIG. 6 has a flat wall 68 that forms a contact surface 75. A curved wall 67 exists in each of the top 72 and the bottom 77 opposite to the top 72. The flat wall portion 68 following the two curved wall portions 67 terminates with two longitudinal edges 71. According to this example, the flat wall portion 68 having the vertically long edge 71 is inclined inward by 1 degree with respect to the first vertically long intermediate plane M1, so that the vertically long edge 71 is between the two outer contour planes AK. Is arranged. Each flat wall portion 68 having the vertically long edge 71 is approaching the extending direction of the corresponding vertically long edge 71 from the adjacent curved wall portion 67 with respect to the opposing flat wall portion 68, and the distance is hollow 69. Specified by

  The embodiment of the hollow profile body 65 shown in FIG. 6 has a little elasticity in the height direction H. The two parts separated by the gap 70 are slightly accessible depending on the gap distance. Thereby, if oscillation or vibration occurs during the operation of the weaving machine 20, it has the effect of reducing it.

  The hollow profile main body 65 is very light compared to a hollow profile body 65 filled with a material. By appropriately forming it, sufficient bending elasticity can be obtained, whereby the guide rail 55 does not bend in the longitudinal direction L due to its weight, and further due to oscillation or vibration of the weaving machine. In particular, the flexural elasticity of the hollow profile body 65 in the height direction H is greater than that in the width direction B in all the examples.

  In the process of replacing the warp, if the guide rail 55 has to be removed from the warp stop device 23 and reattached, the operation is simple because it is lightweight. The hollow profile main body 65 produced without taking out a cutting piece from a flat sheet can be produced efficiently at low cost. Further, there is no risk of attachment of a cutting piece that damages the warp 22.

  As shown in FIG. 5, the warp yarn 22 contacts the guide rail 55 at least at the top portion 72. For example, if the tension of the thread is weak, such as when a new thread is hooked, the deflected thread is supported by the round, cornerless top 72 of the guide rail 55. The contact thin plate 48 is disposed between the guide rails 55. Accordingly, the warp yarn 22 is prevented from being entangled or entangled and caught on the contact thin plate 48.

  In the second embodiment of the hollow profile body 65 shown in FIG. 7, the gap 70 is located between the two longitudinal edges 71 of the bottom 77 of the guide rail 55. The hollow profile body 65 has a curved wall 67 at the top 72 following a flat wall 68 having a longitudinal edge 71. The two flat walls 68 face each other and form a contact surface 65.

  The embodiment of FIG. 8 differs from the embodiment of FIG. 7 in that one of the flat wall portions 68 is shorter in the height direction H. The two vertically long edges 71 are arranged to have different lengths in the height direction H. The hollow 69 is thereby reduced, and the gap 70 is formed between one of the vertically long edges 71 and the flat wall portion 68 that face each other in the width direction B.

  In the fourth embodiment of the hollow profile body 65 shown in FIG. 9, the two hollows 69 are arranged apart from each other in the height direction. Each hollow 69 is disposed symmetrically with respect to the first and / or second vertically long intermediate planes M1 and M2, and has a water droplet shape in cross section. The two vertically long gaps 70 are opposed to each other and extend in the vertically long direction L along the first vertically long intermediate plane M1. The middle flat wall portion 68 passes through the first vertically long intermediate plane M1 at a certain inclination angle, and is inverted in the curved regions of the top portion 72 and the bottom portion 77 each having the curved wall portion 67. After inversion at the opposite end of the middle flat wall 68 by the curved wall 67, the flat wall 68 extends at a certain angle with respect to the first longitudinal intermediate plane M 1 and terminates at a longitudinal edge 71, respectively. A vertically long gap 70 is formed between the flat wall portion 68 and the vertically long edge 71 adjacent to each other in the width direction B. The overall cross-sectional profile of this hollow profile body 65 is similar to a figure eight.

  In the fifth embodiment shown in FIG. 10, the flat wall portion 68 extends along one outer contour plane AK that forms the contact surface 75, and a curved wall portion 67 having the same shape at the top portion 72 and the bottom portion 77. To. Thereafter, the curved wall 67 and the flat wall 68 having a semicircular arc shape are terminated from the flat wall 68 along the other outer contour plane AK through the other curved wall 67, respectively. In this way, two vertically long gaps 70 are formed between the vertically long edge 71 and the opposing wall portion 68. The two vertically long gaps 70 are arranged at equal distances from the second vertically long intermediate plane M2.

  In the hollow profile main body 65 of all the embodiments shown in FIGS. 6 to 10, the curved wall portions 67 have the same curvature R. In contrast, the embodiment of FIG. 11 has two curved wall portions 67 having different curvatures. At the top 72 there is a curved wall 67 extending between the two outer contour planes AK. On the opposite side, the curved wall 67 bends toward the flat wall 68 and extends at an incline with respect to the first longitudinal intermediate plane M 1, forming a contact end 76, and terminates at a first longitudinal edge 71. The vertically long edge 71 is located between the first vertically long intermediate plane M1 and the corresponding one of the outer contour planes AK. On the opposite side in the width direction B, the top 72 extends to the flat wall 68 along another outer contour plane AK and reaches another curved wall 67 with a small curvature. The curved wall portion 67 has a quadrangular arc shape, turns to reach the flat wall portion 68 and extends at right angles to the height direction H, and passes through the first vertically long intermediate plane M1. Another vertical edge 71 is formed on the flat wall portion 68. In this way, these vertically long edges 71 are located between the first vertically long intermediate plane M1 and one outer contour plane AK.

  In the seventh embodiment shown in FIG. 12, the hollow profile main body 65 forms a third hollow 69 by an offset 78, unlike the embodiment of FIG. The offset 78 exists between the two curved walls 67 that form the top 72 and the bottom 77. The offset 78 is positioned between the two vertically long gaps 70 symmetrically with respect to the second vertically long intermediate plane M <b> 2, and is opened in the width direction B by each vertically long gap 70. As described above, the hollow 69 has the vertically long gap 70, which is not defined by at least the vertically long edge 71 unlike the vertically long gap 70 described above. In this example, the offset 78 is formed by four curved wall portions 67 and flat wall portions 68 having different curvatures. The offset 78 passes through the first vertically long intermediate plane M1.

  In the hollow profile body 65 of the eighth embodiment shown in FIG. 13, the curved wall portion 67 is most circular at the top portion 72 and surrounds the hollow 69. The two flat wall portions 68 extend in parallel to each other and reach the longitudinal edge 71. Thereafter, the two vertically long edges 71 extend to the bottom 77. Between the two flat walls 68 there is an intermediate space 80 along the first vertical intermediate plane M 1, which terminates in a vertical gap 70 between the two vertical edges 71.

  The ninth embodiment shown in FIG. 14 is a modification of the embodiment of FIG. Here, there are curved wall portions 67 at the top portion 72 and the bottom portion 77, and each of them is close to a perfect circle. Two curved wall portions 67 are connected via a flat wall portion 68 between the first vertically long intermediate plane M1 and one outer contour plane AK. On one side of the first vertically long intermediate plane M1, each curved wall portion 67 reaches a flat wall portion 68 and terminates at a vertically long edge 71. The vertically long edges 71 are separated from the second vertically long intermediate plane M2. The flat wall portions 68 extend parallel to each other. Each hollow 69 continues to the longitudinal gap 70 via a space 80 between the flat walls 68.

  In addition to the hollow profile body 65 of each embodiment described above, other modifications are possible. The above embodiments may be combined. For example, the flat wall portion 68 extending in parallel with the height direction H and the longitudinal direction L may be disposed so as to be inclined with respect to the height direction H or the first longitudinal intermediate plane M1. Each longitudinal edge 71 directly adjacent to the outer contour plane AK may be located between the two outer contour planes AK in cross section and may be coupled to the curved wall portion 67 and / or the flat wall portion 68. Thereby, the contact between the vertically long edge 71 and the contact thin plate 48 is avoided.

  The invention relates to a guide rail 55 for the warp stop device 23 of the weaving machine 20. The guide rail 55 has a width FB in the width direction B smaller than the height FH in the height direction H. The guide rail 55 is configured as a hollow profile body 65 having at least one hollow 69. The hollow profile body 65 is formed with a bent portion. Specifically, the hollow profile main body 65 is produced by processing a plate-like sheet piece by a forming method that does not produce a cut piece, for example, roller forming. Thereby, the wall 66 of the hollow profile main body 65 can be integrally formed. Wall 66 surrounds hollow 69.

20 Weaving Machine 21 Back Roller 22 Warp Thread 23 Warp Thread Stopping Device 24 Thin Plate 25 Weld Frame 26 Weft 27 Lead 28 Cloth Cell Veg 29 Cloth 30 Cloth Take-out Machine 34 Fastening Device 35 Machine Frame 36 Fastening Element 37 Thread Support Tube 40 Contact Rail 41 Electricity Contact portion 42 electrical contact portion 43 insulator 44 electrical contact 45 electrical contact 48 contact thin plate 49 warp thread hole 50 thin plate slot 51 contact leg portion 55 guide rail 56 support tool 57 fastening unit 58 intermediate support tool 59 first spacer Element 60 Second spacer element 61 Slot 65 Hollow profile body 66 Wall 67 Curved wall 68 Flat wall 69 Hollow 70 Vertical gap 71 Vertical edge 72 Top 75 Contact surface 76 Contact end (edge)
77 Bottom 78 Offset 80 Space A Working direction AK Outer contour plane B Width direction BD Sheet thickness E Warp surface FB Guide rail width FH Guide rail height H Height direction K Warp direction L Long direction M1 First longitudinal direction middle Plane M2 Second vertically long intermediate plane WD Wall thickness

Claims (14)

A warp stop device 23 having a guide rail 55,
In the cross section, the guide rail 55 has a width FB in the width direction B and a height FH in the height direction H.
The guide rail 55 is formed as a hollow profile body 65 having a wall 66 surrounding at least one hollow 69 penetrating the guide rail 55 in the longitudinal direction L, and the hollow profile body is opened by a gap 70 in one place. ing,
The warp stop device.   The warp stop device according to claim 1, wherein the wall (66) is made of a uniform material without joints or joints.   The warp yarn stopping device according to claim 1 or 2, wherein the wall 66 is produced by a molding method in which a cutting piece does not come out.   The warp stop device according to claim 3, wherein the wall 66 is produced by roller molding (Walzprofilieren).   The warp stop device according to any one of claims 1 to 4, wherein the wall 66 is produced by a sheet having a constant thickness BD.   The warp yarn stopping device according to claim 5, wherein the thickness BD is equal to or less than one third of the width FB of the guide rail 55.   The warp yarn stopping device according to any one of claims 1 to 6, wherein the wall 66 has a wall portion 67 curved at least at a side end in the height direction H.   The warp stop device according to any one of claims 5 to 7, wherein the curved wall 67 has a minimum curvature R corresponding to the thickness BD.   The wall 66 includes a first flat vertically long wall portion 68 that extends in the height direction H and the vertically long direction L over the guide rail 55 and is inclined with respect to the intermediate plane M1. A warp stop device according to any one of the above.   10. The wall 66 according to claim 1, wherein the wall 66 extends in the height direction H and the longitudinal direction L over the guide rail 55 and is symmetric with respect to the intermediate plane M <b> 1. Warp stop device.   11. The apparatus according to claim 1, wherein in the width direction B, one flat contact surface 75 or at least one curved contact end (edge) 76 extending in the longitudinal direction L is provided. The warp stop device described.   12. The warp stop device according to claim 11, wherein the flat contact surface 75 or the at least one curved contact edge (edge) 76 each define an outer contour plane AK.   The warp yarn stopping device according to claim 12, wherein the outer contour planes AK are parallel to each other. The warp stop device according to any one of claims 1 to 13, wherein at least two hollows 69 are arranged along the height direction H.

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