EP1899515B1 - Terry loom - Google Patents
Terry loom Download PDFInfo
- Publication number
- EP1899515B1 EP1899515B1 EP06754174.8A EP06754174A EP1899515B1 EP 1899515 B1 EP1899515 B1 EP 1899515B1 EP 06754174 A EP06754174 A EP 06754174A EP 1899515 B1 EP1899515 B1 EP 1899515B1
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- EP
- European Patent Office
- Prior art keywords
- cloth
- breast beam
- draw
- roller
- terry loom
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D39/00—Pile-fabric looms
- D03D39/22—Terry looms
- D03D39/223—Cloth control
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D49/00—Details or constructional features not specially adapted for looms of a particular type
- D03D49/04—Control of the tension in warp or cloth
- D03D49/22—Back rests; Lease rods; Brest beams
Definitions
- the invention relates to a terry loom with devices for supplying a ground warp and a pile warp, with devices for beating up weft yarns and with devices for drawing off cloth, which comprise a breast beam, the to-and-fro motion of at least the breast beam allowing movement of the cloth relative to the device for beating up the weft yarns, and it relates to a breast beam for a terry loom.
- Terry looms of the above-mentioned type have long been known, for example from US 607377 or from US 1595289 .
- Displacement of the breast beam and thus of the fell of the cloth relative to the device for beating up a weft yarn causes variation of the distance from the always constant beat-up line up to which the beating-up device moves. If, after a plurality of picks and beat-ups effected at a distance from the fell, the fell is moved closer to the beating-up device, in particular a reed, the previously inserted weft yarns are carried along towards the fell. In the process, they move relative to the more tightly tensioned warp yarns of the ground warp, while carrying with them the only loosely tensioned warp yarns of the pile warp. In the process, the warp yarns of the pile warp form loops.
- the cloth is drawn off by means of a driven sand roller, as is also shown in DE 1933911 .
- the cloth is guided in such way that the top side of the cloth lies on the circumferential surface of the draw-off roller.
- This circumferential surface of the draw-off roller is such that it exerts the greatest possible frictional force on the cloth.
- the draw-off roller may be provided with a friction covering (previously sand) and is therefore also called a sand roller.
- the cloth Downstream of the draw-off roller, the cloth runs over a deflection roller and is wound up onto the cloth beam in such a way that the top side of the cloth lies on the outside.
- This arrangement of draw-off roller, deflector and cloth beam is also conventional in looms which weave a plain cloth ( EP 0409811 A1 ).
- GB 1400859 relates to a loom and a method for weaving a terry cloth.
- a breast beam in the form of a strip is provided, which is movable to an fro in a linear movement.
- a temple is coupled ridgedly to the breast beam by guide bars so that it follows the movement of the breast beam.
- the object of the invention is to provide a breast beam of maximum rigidity but low mass, such that high weaving speeds are possible.
- a breast beam is provided, wherein the breast beam forms a structural unit with a cloth table and with a sliding table, which connects the breast beam with a cloth table moving therewith, wherein the sliding table comprises a plate arranged upstream of the breast beam, which plate has an edge in the shape of part of a cylinder, which edge serves as deflector of the breast beam and is mounted on a first shaft so as to be rotatable about the central axis of the first shaft, and the plate is guided by means of at least one linear guide element oriented substantially in the draw-off direction of the cloth.
- the configuration according to the invention of the breast beam provides a relatively low-mass, but a rigid structure with respect to bending.
- the sliding table comprises a plate which is arranged upstream of the breast beam. This plate forms an additional cloth guide, such that the cloth travels evenly to the breast beam.
- the edge of the plate in the shape of part of a cylinder is mounted on a second shaft so as to be rotatable about its central axis.
- This shaft additionally serves to provide further stiffening in the area of the breast beam.
- the plate In order to change the angular orientation of the sliding table relative to the cloth as little as possible, the plate is guided by means of at least one linear guide element oriented substantially in the draw-off direction of the cloth. Providing the linear guide element and mounting the plate rotatably on a shaft ensures that the angular position of the sliding table changes only insignificantly during forward and back movement of the breast beam.
- An embodiment of the invention provides for the plate to merge into the breast beam. This results in a structurally simple configuration, if provision is made, in a further embodiment, for the plate to have an edge in the shape of part of a cylinder, which forms the breast beam.
- a further embodiment of the invention provides for the at least one linear guide element to serve to accommodate the cloth table.
- the device comprises draw-off roller and a deflecting device provided between breast beam and draw-off roller which deflects the cloth in such a way that the bottom side of the cloth faces the outside of the draw-off roller.
- the deflecting device may be attached between breast beam and draw-off roller and deflects the cloth into a loop.
- a further embodiment of the invention provides for the deflecting device to be removable from the loom once a securing device has been loosened. It is thus simply possible to bring the cloth in the form of a loop between breast beam and draw-off roller at the beginning of production and then to attach the deflecting device.
- the breast beam is swivellable about a shaft parallel thereto and that the loop is located between the draw-off roller and this shaft.
- the deflecting device comprises a deflecting bar, which is held by a supporting bar via one or more supporting elements. In this way, a relatively rigid but dimensionally relatively small deflecting device may be obtained.
- the supporting element(s) is/are arranged at least approximately on the angle bisector between the branches of the loop of cloth. These then maintain a sufficiently large distance from the draw-off roller, such that damage to the surface thereof is prevented. In addition, enough space then remains to move the breast beam to and fro in the weaving direction on a terry loom.
- a further embodiment of the invention provides for the deflector to be a rotatably mounted roller.
- a breast beam which is intended for a terry loom which comprises devices for supplying a ground warp and for supplying a pile warp and a device for moving cloth which has been formed to and fro relative to a device for beating up weft yarns, wherein the breast beam forms a structural unit with a sliding table and connects the breast beam with a cloth table.
- a breast beam is in itself a commercial item which serves, for example, as a spare part.
- the configuration according to the invention ensures that the breast beam exhibits a relatively low mass in relation to its rigidity.
- a very rigid structure may be provided which serves on the one hand as a breast beam and on the other hand as a sliding table on which the cloth travelling towards the breast beam is guided.
- a method for drawing off cloth produced on a loom, in particular a terry loom, in which the cloth is drawn off by means of a draw-off roller and runs over a breast beam arranged upstream of the draw-off roller, wherein it is provided according to the invention that the cloth is deflected as a loop between the breast beam and the draw-off roller in such a manner that it faces the circumference of the draw-off roller with the same side as it faces the circumference of the breast beam while forming an angle of wrap of approximately at least 180° for the draw-off roller.
- the terry loom illustrated schematically in Fig. 1 has a warp beam 10 with a ground warp 11 and a warp beam 12 with a pile warp 13.
- the ground warp 11 is deflected into the weaving plane via a backrest 14.
- the pile warp 13 runs over a deflector 15, which preferably takes the form of an oscillating sheet shaft (shaft of flexible sheet metal), to a backrest 16 and thence likewise into the weaving plane. Both the ground warp 11 and the pile warp 13 travel to shedding devices indicated by arrows 17.
- the ground warp 11 runs over a deflector 61 to the backrest 14, such that the ground warp 11 always runs in the same direction to the backrest 14 irrespective of how full the warp beam 10 is.
- a stationary deflector 62 is arranged upstream of the deflector 15, such that the pile warp 13 always runs in the same direction to the deflector 15.
- a warp stop motion 51 is assigned to the ground warp 11 in the area between the backrest 14 and the backrest 16.
- the pile warp 13 also has its own warp stop motion 50 assigned to it in the area in which it is still separated from the ground warp 11.
- the device for inserting weft yarns may take the form, for example, of an air-jet loom device, which conventionally consists of two main nozzles arranged one behind the other and next to the shed and a row of relay nozzles, which are arranged on a sley 18.
- the blowing direction is directed towards a weft insertion channel of a reed 19.
- the weft yarns are tied up by means of the warp yarns when the shed is changed, i.e. a number of warp yarns are changed from the upper position into the lower position and a number of warp yarns are changed from the lower position into the upper position.
- the cloth 20 formed in this way is drawn off by means of a draw-off roller 21 and then wound onto a cloth beam 22.
- a breast beam 23 and two deflectors 24, 25 are arranged upstream of the draw-off roller 21 driven in the draw-off direction.
- the cloth deflected downwards by the breast beam 23 out of the weaving plane is deflected by the deflector 25 in such a way that the same cloth side (bottom side of cloth) which lies on the breast beam 23 also lies on the circumferential surface of the draw-off roller 21.
- the deflector 25, which takes the form of a component which may be detached from the loom, is removed and only reinstalled when a loop has been formed for the deflector 25 upstream of the draw-off roller 21.
- the backrest 14 of the ground warp 11, the backrest 16 of the pile warp 13 and the breast beam 23 may be moved to and fro in the direction of double-headed arrows A.
- the backrest 14 of the ground warp 11 is arranged at both ends on a lever 9, which is swivellable about the axis of the deflector 61.
- This lever 9 is provided with an arm 63 which is acted upon by a pressure spring 52.
- the breast beam 23, the construction of which will be explained in more detail below, is mounted on both sides by levers 8 which are swivellable about an axis coaxial with the deflector 24.
- the deflector 24 is supported relative to bearings 77.
- the backrest 16 of the pile warp 13 is held on both sides by levers 3 which are swivellable about a shaft 53 parallel to the backrest 16. Swivelling is effected by means of a separate drive motor 7, which drives swivel levers 4, which are arranged at a spacing corresponding to the maximum cloth width.
- the swivel levers 9 of the backrest 14 of the ground warp 11 are coupled to the swivel levers 4 by means of transmission bars 6 and the levers 3 of the backrest 16 the pile warp 13 are coupled to said levers 4 by means of transmission bars 2.
- the levers 8 are also coupled to the swivel levers 4 by means of transmission bars 5.
- Construction of the device for to-and-fro movement of breast beam 23 and backrest 14 and also of backrest 16 may in detail be configured as described in the parallel German patent application 10 2005 028 126.5 with internal file reference P 45160 DE.
- the backrest 16 is held resiliently, in particular in such a manner as is described in the parallel German patent application 10 2005 028 127.3 with internal file reference P 45163 DE.
- the cloth 20 is displaced in such a way as to cause variation of the distance from the fell 36 of the cloth 20 to the beat-up line 37, i.e. to the line which the reed 19 approaches during beating up of a weft yarn to the fell 36.
- the cloth 20 is moved by moving backrest 14, backrest 16 and breast beam 23 accordingly (to the right in Fig. 1 ), such that the fell 36 again approaches the beat-up line 37.
- this weft yarn is brought up to the fell 36 with the previously inserted weft yarns.
- the weft yarns slide along the warp yarns of the ground warp 11, which is relatively tightly tensioned.
- the warp yarns of the pile warp 13 are less tensioned, such that the weft yarns carry the pile warp 13 with them during the beat-up movement, the pile warp thus forming loops which project upwards and downwards out of the surface of the ground warp 11.
- Figs. 2 and 3 Movement of the cloth 20 with the breast beam 23 and thus also of the fell 36 relative to the beat-up line 37 is illustrated in Figs. 2 and 3 .
- Figs. 2 and 3 In the position according to Fig. 2 , in which the fell 36 and beat-up line 37 lie close to one another, full beat-up takes place.
- fell 36 and beat-up line 37 In the position according to Fig. 3 , fell 36 and beat-up line 37 are at a greater distance from one another, such that partial beat-up takes place.
- the breast beam 23 has a plate 40, for example a metal plate, which is part of a sliding table 26.
- the plate 40 has an edge 41 in the shape of part of a cylinder, which is mounted on a shaft 27 extending parallel to the draw-off roller 21 by means of rotatably mounted bushes 30.
- the plate 40 lies freely on the bushes.
- the shaft 27 is supported by means of supporting elements 49 on a supporting bar 24 extending parallel to the shaft 27, said bar forming the deflector 24 for the cloth 20.
- the supporting bar 24 is supported in the middle thereof by a support 48 on a crossbar 47, which connects together the two side parts of the loom, which are not shown.
- the bushes 30 are provided with extension pieces 31, to which upper parts 34 of a linear guide 29 are attached, the lower parts 33 of which are mounted on a shaft 35 mounted parallel to the shaft 27 in the machine frame.
- a plurality of linear guides 29 are distributed over the width of the loom.
- the upper parts 34 and lower parts 33 of the linear guides 29 are guided inside one another in the direction of travel of the cloth.
- At least one of the linear guides may comprise undercut guide elements, for example guide elements undercut in the manner of a dovetail, such that the upper part 34 cannot move away from the lower part 33 radially relative to the shaft 35.
- the lower parts 33 of the other linear guide elements 29 serve merely to support the upper parts 34.
- the plate 40 has a portion with a smooth straight outer surface, which merges tangentially into the edge 41 in the shape of part of a cylinder. In the area upstream thereof the plate 40 is slightly bent. In this area it is attached by means of screws 44 ( Fig. 5 ) to the upper parts 34 of the linear guides 29. Also attached to the upper parts 34 of the linear guides 29 is a profile 28, which serves as a cloth table 39, which provides support close to the fell 36 in the form of a guide surface 43 for the cloth 20 as it is produced.
- the cloth table 39 comprises a projection, which projects into the weft insertion channel, which is present in a reed 19, if weft yarns are inserted using air.
- auxiliary devices 38 such as temples or full-width temples may for example also be attached to the profile 28. Further auxiliary devices 38, such as selvage tuck-in devices or cutting devices or the like, may also be attached to this profile 28 or to a further profile 32, likewise arranged on the upper parts 34 of the linear guides 29.
- the levers 8, which hold the shaft 27 on both sides, are swivellably mounted coaxially with the deflector 24 constructed as a supporting bar.
- the cloth 20 extends, as shown in Figs. 2 and 3 , in a plane from the bearing surface of the cloth table 39 to the edge 41, shaped as part of a cylinder, of the plate 40, which serves as breast beam 23.
- the smooth portion of the plate 40 serving as sliding table 26 and merging tangentially into the edge 41 shaped as part of a cylinder extends parallel to the cloth 20. It is clear from Fig. 2 and 3 that the cloth 20 remains substantially in the same plane in the area between the bearing surface of the cloth table 39 and the breast beam 23 when the breast beam 23 moves between the positions according to Figs. 2 and 3 . In the process, there is also virtually no movement between cloth 20 and cloth table 39 and breast beam 23.
- the deflector 25 is a roll, which is held by means of a supporting part 64 between the deflector 24 and the draw-off roller 21, which takes the form of a needle roller.
- the supporting part 64 is provided with a plurality of pairs of rollers distributed over the cloth width, said pairs of rollers forming a wedge-shaped gap in which the roll 25 is accommodated.
- the breast beam 23, i.e. the plate 40, the linear guides 29 with the cloth table 39, with the profile 32, with the shaft 35 and with the shaft 27 with the supporting elements 49 and the supporting bar 24 serving as a deflector all take the form of one structural unit, which is arranged in holders 45, 46 suitable for attachment to the side parts of a loom.
- the structural unit may be of low-mass and requires little structural space.
- the shaft 27 is secured against sagging or bending, such that high weaving speeds and high warp tensions or high cloth tensions are possible.
- the crossbar 47 is arranged between these two holders 45, 46 and forms a component of the structural unit.
- the holders 45, 46 also form guides for the deflector 25 and the supporting part 64 thereof.
- the plate 40 of the sliding table 26 is of one-piece construction with a cloth table and to be provided with elements formed thereon which constitute the upper parts for the linear guides 29.
- the terry loom illustrated schematically in Fig. 6 has a device for supplying a ground warp 11 drawn off from a warp beam 10 and a device for supplying a pile warp 13 drawn off from a warp beam 12.
- the ground warp 11 is deflected over a backrest 14 into the weaving plane.
- the pile warp 13 runs over a deflector 15 to its own backrest 16 and thence likewise into the weaving plane.
- Both the ground warp 11 and the pile warp 13 travel to shedding devices indicated by arrows 17. Weft yarns are inserted in each case into the sheds which are formed.
- the cloth 20 formed in this way is drawn off by means of a draw-off roller 21 and wound onto a cloth beam 22.
- a breast beam 23 and two deflectors 24, 25 are arranged upstream of the draw-off roller 21 driven in the draw-off direction.
- the breast beam 23 deflects the cloth 20 downwards out of the weaving plane.
- the draw-off roller 21 is driven in known manner, for example by means of its own drive motor or by means of a drive derived from the loom's main drive.
- the draw-off roller 21 may take the form of a sand roller or a needle beam.
- the backrest 14 of the ground warp 11 and the breast beam 23 may be moved to and fro in the same direction in the direction of arrows A. Swivelling of the swivellable backrest 14 and of the swivellable breast beam 23 is effected for example by means of a drive, as described for example in the parallel German patent application 10 2005 028 126.5 with internal file reference P 45160 DE.
- the backrest 16 of the pile warp 13 is likewise driven in the same direction and likewise in the direction of arrows A, to which end a drive corresponding to the parallel German patent application 10 2005 028 126.5 with internal file reference P 45160 DE may be provided.
- backrest 16 is held resiliently, as described in the parallel German patent application 10 2005 028 127.3 with internal file reference P 45163 DE.
- the reciprocating drive for backrest 14 and breast beam 23 may also be configured as is known substantially from US 607 377 or US 1595 289 .
- the movement of backrest 14 and breast beam 23 causes variation of the distance from the fell to the beat-up line of the reed, i.e., to the beat-up line to which the reed 19 approaches to the fell during beating up of a weft yarn. It is provided, for example, that after beating up a weft yarn to the fell, the fell is moved away from the beat-up line by moving backrest 14 and breast beam 23 to the left in Fig. 6 . This position is maintained for example during the next two or four picks. Then the fell is moved back closer to the beat-up line by moving backrest 14 and breast beam 23 accordingly, i.e., to the right in Fig. 6 .
- Displacement of the cloth 20 relative to the reed 19 and thus to the beat-up line 37 takes place by means of a drive 56, which drives swivel arms 57 arranged on either side of the cloth width.
- Transmission bars 5, 6 are coupled to the swivel arms 57.
- the transmission bars 5 act on swivel levers 8, which receive the breast beam 23.
- the lever 8 is coupled to the transmission bar 5 by means of a bearing device 83.
- the transmission bars 6 act on swivel levers 9, which hold the backrest 14 of the ground warp 11.
- lever arms 71 Provided on the swivel levers 9 are lever arms 71, which are supported by means of springs 72.
- the breast beam 23 is held at its two ends by means of levers 8, which may be swivelled about a shaft 60 coinciding with the deflector 24.
- the breast beam 23 is part of a sliding table 26 comprising a cloth table 39 and a plate 40.
- the edge 41, forming the breast beam 23, of the plate 40 takes the form of part of a cylinder and is mounted rotatably on a shaft 27 by means of bearing bushes 30, said shaft being held on both sides by means of swivel levers 8.
- the front end of the plate 40 in the weaving direction is held by means of a linear guide 29, which is formed of a lower part 33 and an upper part 34.
- the lower part 33 is swivellable about a shaft 35 parallel to the breast beam 23.
- the linear guide 29 preferably has a plurality of linear guide elements with lower part 33 and for example also with upper part 34 distributed over the cloth width.
- a deflecting element 25 between breast beam 23 and draw-off roller 21 deflects the cloth 20 in such a way that the bottom side of the cloth 20, which lies against the circumference of the breast beam 23, also comes to lie against the circumference of the draw-off roller 21.
- a loop 54, 55 which is held by the deflecting element 25.
- a further deflecting element 58 Downstream of the draw-off roller 21 there is provided a further deflecting element 58, such that the cloth 20 exhibits the greatest possible angle of wrap with the draw-off roller 21, which is of the order of 270° or more.
- the deflecting element 25 belongs to a deflecting device 59, which is inserted into the terry loom after the loop 54, 55 has been laid between breast beam 23 and draw-off roller 21.
- the deflecting element 25 is a bar, which is solid or takes the form of a tube. This is supported against sagging by means of a supporting bar 65, which is likewise solid or tubular with a round or rectangular cross-section. Between the deflecting element 25 in the form of a bar and the supporting bar 65 there are arranged supporting elements.
- the deflecting device 59 may be configured approximately in the form of a ladder.
- the supporting bar 65 takes the form of an angle section, which is provided with braces 76.
- the deflecting element 25 is attached non-rotatably by means of fastening elements 66 to the leg of the angle section 65 directed towards the deflecting element 25.
- the deflecting element 25 with its ends 75 is inserted into bearing shells 42 open at the top, which are attached to the side parts 67 of the loom.
- the supporting bar 65 is likewise fixed to the side parts 67.
- abutments 68 are provided on the side parts 67, to which abutments the supporting bar 65 is attached by means of screws 69.
- Fig. 11 shows a modified embodiment in which the deflecting element 25 constructed as a roller is mounted in the bearing shells 42 by means of pivot bearings.
- the roller-shaped supporting element is thus rotated as a result of the friction between its surface and the cloth.
- Support is provided by a supporting bar 65 in the form of an angle corresponding to the exemplary embodiment according to Figs. 9 and 10 .
- pillow blocks 73 At the end of the leg 70 of the supporting element directed towards the deflecting element 25 there are attached pillow blocks 73, which carry rollers 74 which support the roller-shaped deflecting element 25.
- the deflecting device 59 first of all the loop is laid between breast beam 23 and draw-off roller 21, the deflecting device 59 then being inserted into said loop.
- the deflecting device 59 is then secured in the inserted position illustrated by means of the above-mentioned securing elements, i.e. the screws 69.
- the deflecting device 59 is secured laterally of the cloth against diverting movements in the direction of the draw-off roller 21 and the deflector 24. In the exemplary embodiment this is effected by means of the bearing shells 42 provided on the side parts 67.
- the supporting bar 65 for the deflecting element 25 is arranged in such a way that it is arranged substantially on the angle bisector provided between the two branches 54, 55 of the loop. In this way, the supporting bar 65 is subjected to only slight bending stress, such that the deflecting element 25 is not deformed in the direction of the draw-off roller 21 or the breast beam 23.
- the deflector 24 has the effect that the cloth 20 virtually does not move relative to the deflector 24 and thus also does not move relative to the deflecting element 25.
- the friction between the cloth 20 and the deflector 24 and the deflecting element 25 to a considerable extent prevents the cloth 20 from moving relative to the draw-off roller 21 when the breast beam 23 is moved to and fro to produce terry cloth.
- the deflecting device according to the invention may be used in all types of loom and in particular also in all types of terry loom.
- the deflecting device may also be used in a terry loom in which the terry cloth is produced by means of sley adjustment, as is known for example from EP 1 201 807 A1 .
- the invention is not restricted to the exemplary embodiment illustrated.
- modifications are possible with regard to the deflecting device 59, which may be modified in particular with regard to the bracing of the deflecting bar 25.
- Fig. 12 another embodiment is shown, where a part 82 of the cloth 20 is deflected by a deflector element 79 arranged between the deflector 24 and the draw-off roller 21.
- the deflector element 79 consists of a flexible plate and is intended to bring the orientation of the pile loops of the cloth 20 in the same direction before the cloth 20 comes into contact with the outer side of the draw-off roller 21.
- the deflector element 79 is supported by a crossbar 78 extending between the side parts of the loom. Downstream of the draw-off roller 21, the cloth 20 is further guided by means of deflectors 80 and 81. In this embodiment the top side of the cloth 20 is guided along the outer side of the draw-off roller 21.
- the draw-off roller 21 is arranged approximately in the vicinity below the shaft 35, whereby the cloth 20 is guided around the deflector 24. In this embodiment, the bottom side of the cloth 20 will contact the outer side of the draw-off roller 21.
- the invention is not restricted to the exemplary embodiments illustrated nor to a terry loom which operates with weft yarn insertion in the manner of air-jet looms.
- the invention may also be used straightforwardly in terry looms which take the form of rapier looms, projectile looms, shuttle looms, gripper shuttle looms, water jet looms or any other type of loom.
- weft insertion devices may be provided as are known from looms other than air-jet looms, for example the weft insertion systems found in looms with grippers, shuttle looms, projectile looms, gripper shuttle looms or other looms.
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Description
- The invention relates to a terry loom with devices for supplying a ground warp and a pile warp, with devices for beating up weft yarns and with devices for drawing off cloth, which comprise a breast beam, the to-and-fro motion of at least the breast beam allowing movement of the cloth relative to the device for beating up the weft yarns, and it relates to a breast beam for a terry loom.
- Terry looms of the above-mentioned type have long been known, for example from
US 607377 or fromUS 1595289 . Displacement of the breast beam and thus of the fell of the cloth relative to the device for beating up a weft yarn causes variation of the distance from the always constant beat-up line up to which the beating-up device moves. If, after a plurality of picks and beat-ups effected at a distance from the fell, the fell is moved closer to the beating-up device, in particular a reed, the previously inserted weft yarns are carried along towards the fell. In the process, they move relative to the more tightly tensioned warp yarns of the ground warp, while carrying with them the only loosely tensioned warp yarns of the pile warp. In the process, the warp yarns of the pile warp form loops. - The cloth is drawn off by means of a driven sand roller, as is also shown in
DE 1933911 . With the known construction, the cloth is guided in such way that the top side of the cloth lies on the circumferential surface of the draw-off roller. This circumferential surface of the draw-off roller is such that it exerts the greatest possible frictional force on the cloth. To this end, the draw-off roller may be provided with a friction covering (previously sand) and is therefore also called a sand roller. Downstream of the draw-off roller, the cloth runs over a deflection roller and is wound up onto the cloth beam in such a way that the top side of the cloth lies on the outside. This arrangement of draw-off roller, deflector and cloth beam is also conventional in looms which weave a plain cloth (EP 0409811 A1 ). - It is also known (
US 607377 andDE 1933911 ) to provide temples which are arranged and held in such a way that they follow the movements of the breast beam, such that no relative motion takes place between the temples and the cloth as a result of movement of the cloth. -
GB 1400859 GB 1400859 - The object of the invention is to provide a breast beam of maximum rigidity but low mass, such that high weaving speeds are possible.
- This object is achieved by a breast beam in accordance with claim 1, terry loom in accordance with claim 3 and a method in accordance with
claim 18. - According to the invention a breast beam is provided, wherein the breast beam forms a structural unit with a cloth table and with a sliding table, which connects the breast beam with a cloth table moving therewith, wherein the sliding table comprises a plate arranged upstream of the breast beam, which plate has an edge in the shape of part of a cylinder, which edge serves as deflector of the breast beam and is mounted on a first shaft so as to be rotatable about the central axis of the first shaft, and the plate is guided by means of at least one linear guide element oriented substantially in the draw-off direction of the cloth.
- The configuration according to the invention of the breast beam provides a relatively low-mass, but a rigid structure with respect to bending.
- The sliding table comprises a plate which is arranged upstream of the breast beam. This plate forms an additional cloth guide, such that the cloth travels evenly to the breast beam.
- In order to change orientation relative to the cloth as little as possible during movement of the breast beam, provision is made for the edge of the plate in the shape of part of a cylinder to be mounted on a second shaft so as to be rotatable about its central axis. This shaft additionally serves to provide further stiffening in the area of the breast beam. For further stiffening, it is advantageous further to provide for the shaft to be supported by means of supporting elements on a supporting bar extending parallel thereto.
- In order to change the angular orientation of the sliding table relative to the cloth as little as possible, the plate is guided by means of at least one linear guide element oriented substantially in the draw-off direction of the cloth. Providing the linear guide element and mounting the plate rotatably on a shaft ensures that the angular position of the sliding table changes only insignificantly during forward and back movement of the breast beam.
- An embodiment of the invention provides for the plate to merge into the breast beam. This results in a structurally simple configuration, if provision is made, in a further embodiment, for the plate to have an edge in the shape of part of a cylinder, which forms the breast beam.
- A further embodiment of the invention provides for the at least one linear guide element to serve to accommodate the cloth table.
- In a further embodiment of the invention, the device comprises draw-off roller and a deflecting device provided between breast beam and draw-off roller which deflects the cloth in such a way that the bottom side of the cloth faces the outside of the draw-off roller.
- As a result of this simple measure, the rough outer side of the draw-off roller engages with the bottom side of the cloth, so ensuring that the draw-off roller cannot damage the top side of the cloth generally located on the visible outer side during processing of the cloth. Nonetheless, no arrangement of the draw-off roller which is fundamentally different from conventional machines is necessary. Only the direction of rotation of the draw-off roller has to be changed.
- In order to obtain the greatest possible angle of wrap between the cloth and the draw-off roller, it is provided that the deflecting device may be attached between breast beam and draw-off roller and deflects the cloth into a loop.
- A further embodiment of the invention provides for the deflecting device to be removable from the loom once a securing device has been loosened. It is thus simply possible to bring the cloth in the form of a loop between breast beam and draw-off roller at the beginning of production and then to attach the deflecting device.
- In an advantageous embodiment it is provided that the breast beam is swivellable about a shaft parallel thereto and that the loop is located between the draw-off roller and this shaft.
- In a structurally advantageous manner it is provided that the deflecting device comprises a deflecting bar, which is held by a supporting bar via one or more supporting elements. In this way, a relatively rigid but dimensionally relatively small deflecting device may be obtained.
- In an advantageous embodiment it is provided that the supporting element(s) is/are arranged at least approximately on the angle bisector between the branches of the loop of cloth. These then maintain a sufficiently large distance from the draw-off roller, such that damage to the surface thereof is prevented. In addition, enough space then remains to move the breast beam to and fro in the weaving direction on a terry loom.
- To avoid loading of the cloth, a further embodiment of the invention provides for the deflector to be a rotatably mounted roller.
- In a further embodiment of the invention, a breast beam is provided which is intended for a terry loom which comprises devices for supplying a ground warp and for supplying a pile warp and a device for moving cloth which has been formed to and fro relative to a device for beating up weft yarns, wherein the breast beam forms a structural unit with a sliding table and connects the breast beam with a cloth table. Such a breast beam is in itself a commercial item which serves, for example, as a spare part. The configuration according to the invention ensures that the breast beam exhibits a relatively low mass in relation to its rigidity.
- Provision is advantageously made for an edge, in the shape of part of a cylinder, of a plate oriented substantially in the cloth conveying direction to serve as breast beam, the central axis of which plate is mounted so as to be rotatable about a shaft which is supported by means of supporting elements on a supporting bar. In this way, a very rigid structure may be provided which serves on the one hand as a breast beam and on the other hand as a sliding table on which the cloth travelling towards the breast beam is guided.
- In a further embodiment of the invention, a method is provided for drawing off cloth produced on a loom, in particular a terry loom, in which the cloth is drawn off by means of a draw-off roller and runs over a breast beam arranged upstream of the draw-off roller, wherein it is provided according to the invention that the cloth is deflected as a loop between the breast beam and the draw-off roller in such a manner that it faces the circumference of the draw-off roller with the same side as it faces the circumference of the breast beam while forming an angle of wrap of approximately at least 180° for the draw-off roller.
- Further features and advantages of the invention are revealed by the following description of the embodiment illustrated in the drawings and by the dependent claims.
- Fig. 1
- is a schematic representation of the structure of a terry loom according to the invention,
- Fig. 2
- shows a partial section through the loom of
Fig. 1 in the area of a draw-off roller and a breast beam and a cloth table in the full beat-up position, - Fig. 3
- shows a section corresponding to
Fig. 2 with the position of the breast beam and of the cloth table in a position corresponding to partial beat-up, - Fig. 4
- shows a perspective view of the area of a breast beam without a plate,
- Fig. 5
- shows a view corresponding to
Fig. 4 with plate, - Fig. 6
- is a further schematic representation of the structure of a terry loom according to the invention,
- Fig. 7
- shows a detail of the terry loom of
Fig. 6 on an enlarged scale, - Fig. 8
- is a partial view of a deflecting device of
Fig. 7 , - Fig. 9
- is a view of a deflecting device of
Fig. 7 viewed contrary to the weaving direction, - Fig. 10
- shows a section along line A-A of
Fig. 9 and - Fig. 11
- is a side view of a modified embodiment of a deflecting device.
- Fig. 12
- is a variant of the detail of the terry loom of
Fig. 7 . - The terry loom illustrated schematically in
Fig. 1 has awarp beam 10 with aground warp 11 and awarp beam 12 with apile warp 13. Theground warp 11 is deflected into the weaving plane via abackrest 14. Thepile warp 13 runs over adeflector 15, which preferably takes the form of an oscillating sheet shaft (shaft of flexible sheet metal), to abackrest 16 and thence likewise into the weaving plane. Both theground warp 11 and thepile warp 13 travel to shedding devices indicated byarrows 17. - The
ground warp 11 runs over adeflector 61 to thebackrest 14, such that theground warp 11 always runs in the same direction to thebackrest 14 irrespective of how full thewarp beam 10 is. For the same purpose, astationary deflector 62 is arranged upstream of thedeflector 15, such that thepile warp 13 always runs in the same direction to thedeflector 15. Awarp stop motion 51 is assigned to theground warp 11 in the area between thebackrest 14 and thebackrest 16. Thepile warp 13 also has its ownwarp stop motion 50 assigned to it in the area in which it is still separated from theground warp 11. - Weft yarns are inserted in each case into the sheds which are formed. The device for inserting weft yarns may take the form, for example, of an air-jet loom device, which conventionally consists of two main nozzles arranged one behind the other and next to the shed and a row of relay nozzles, which are arranged on a
sley 18. The blowing direction is directed towards a weft insertion channel of areed 19. Thereed 19, which is swivelled with thesley 18, brings the inserted weft yarns to a beat-upline 37, which is shown inFigs. 2 and3 . At this beat-upline 37, the weft yarns are tied up by means of the warp yarns when the shed is changed, i.e. a number of warp yarns are changed from the upper position into the lower position and a number of warp yarns are changed from the lower position into the upper position. Thecloth 20 formed in this way is drawn off by means of a draw-offroller 21 and then wound onto acloth beam 22. Abreast beam 23 and twodeflectors roller 21 driven in the draw-off direction. The cloth deflected downwards by thebreast beam 23 out of the weaving plane is deflected by thedeflector 25 in such a way that the same cloth side (bottom side of cloth) which lies on thebreast beam 23 also lies on the circumferential surface of the draw-offroller 21. Thedeflector 25, which takes the form of a component which may be detached from the loom, is removed and only reinstalled when a loop has been formed for thedeflector 25 upstream of the draw-offroller 21. - The
backrest 14 of theground warp 11, thebackrest 16 of thepile warp 13 and thebreast beam 23 may be moved to and fro in the direction of double-headed arrows A. Thebackrest 14 of theground warp 11 is arranged at both ends on alever 9, which is swivellable about the axis of thedeflector 61. Thislever 9 is provided with anarm 63 which is acted upon by apressure spring 52. Thebreast beam 23, the construction of which will be explained in more detail below, is mounted on both sides bylevers 8 which are swivellable about an axis coaxial with thedeflector 24. Thedeflector 24 is supported relative tobearings 77. Thebackrest 16 of thepile warp 13 is held on both sides by levers 3 which are swivellable about ashaft 53 parallel to thebackrest 16. Swivelling is effected by means of aseparate drive motor 7, which drivesswivel levers 4, which are arranged at a spacing corresponding to the maximum cloth width. The swivel levers 9 of thebackrest 14 of theground warp 11 are coupled to the swivel levers 4 by means oftransmission bars 6 and the levers 3 of thebackrest 16 thepile warp 13 are coupled to saidlevers 4 by means of transmission bars 2. Thelevers 8 are also coupled to the swivel levers 4 by means of transmission bars 5. Construction of the device for to-and-fro movement ofbreast beam 23 andbackrest 14 and also ofbackrest 16 may in detail be configured as described in the parallelGerman patent application 10 2005 028 126.5 with internal file reference P 45160 DE. In a modified embodiment provision is made for thebackrest 16 of thepile warp 13 not to be driven by thedrive motor 7. In this case, thebackrest 16 is held resiliently, in particular in such a manner as is described in the parallelGerman patent application 10 2005 028 127.3 with internal file reference P 45163 DE. - As a result of the movement of
backrest 14,backrest 16 andbreast beam 23, thecloth 20 is displaced in such a way as to cause variation of the distance from the fell 36 of thecloth 20 to the beat-upline 37, i.e. to the line which thereed 19 approaches during beating up of a weft yarn to the fell 36. Provision is made, for example, for the cloth, after beating up of a weft yarn to the fell 36, to be moved to the left by movingbackrest 14,backrest 16 andbreast beam 23, such that the fell 36 moves away leftwards from the beat-up line 37 (Figs. 2 and3 ). This position is maintained for example for the next two, three, four or more picks. Then thecloth 20 is moved by movingbackrest 14,backrest 16 andbreast beam 23 accordingly (to the right inFig. 1 ), such that the fell 36 again approaches the beat-upline 37. When the last inserted weft yarn is beaten up, this weft yarn is brought up to the fell 36 with the previously inserted weft yarns. In the process, the weft yarns slide along the warp yarns of theground warp 11, which is relatively tightly tensioned. The warp yarns of thepile warp 13 are less tensioned, such that the weft yarns carry thepile warp 13 with them during the beat-up movement, the pile warp thus forming loops which project upwards and downwards out of the surface of theground warp 11. - Movement of the
cloth 20 with thebreast beam 23 and thus also of the fell 36 relative to the beat-upline 37 is illustrated inFigs. 2 and3 . In the position according toFig. 2 , in which the fell 36 and beat-upline 37 lie close to one another, full beat-up takes place. In the position according toFig. 3 , fell 36 and beat-upline 37 are at a greater distance from one another, such that partial beat-up takes place. - The
breast beam 23 has aplate 40, for example a metal plate, which is part of a sliding table 26. Theplate 40 has anedge 41 in the shape of part of a cylinder, which is mounted on ashaft 27 extending parallel to the draw-offroller 21 by means of rotatably mountedbushes 30. In this embodiment, theplate 40 lies freely on the bushes. Theshaft 27 is supported by means of supportingelements 49 on a supportingbar 24 extending parallel to theshaft 27, said bar forming thedeflector 24 for thecloth 20. As is visible in particular inFigs. 3 ,4 and5 , the supportingbar 24 is supported in the middle thereof by asupport 48 on acrossbar 47, which connects together the two side parts of the loom, which are not shown. Thebushes 30 are provided withextension pieces 31, to whichupper parts 34 of alinear guide 29 are attached, thelower parts 33 of which are mounted on ashaft 35 mounted parallel to theshaft 27 in the machine frame. - A plurality of
linear guides 29 are distributed over the width of the loom. Theupper parts 34 andlower parts 33 of thelinear guides 29 are guided inside one another in the direction of travel of the cloth. At least one of the linear guides may comprise undercut guide elements, for example guide elements undercut in the manner of a dovetail, such that theupper part 34 cannot move away from thelower part 33 radially relative to theshaft 35. Thelower parts 33 of the otherlinear guide elements 29 serve merely to support theupper parts 34. - The
plate 40 has a portion with a smooth straight outer surface, which merges tangentially into theedge 41 in the shape of part of a cylinder. In the area upstream thereof theplate 40 is slightly bent. In this area it is attached by means of screws 44 (Fig. 5 ) to theupper parts 34 of the linear guides 29. Also attached to theupper parts 34 of thelinear guides 29 is aprofile 28, which serves as a cloth table 39, which provides support close to the fell 36 in the form of aguide surface 43 for thecloth 20 as it is produced. Optionally, the cloth table 39 comprises a projection, which projects into the weft insertion channel, which is present in areed 19, if weft yarns are inserted using air.Auxiliary devices 38 such as temples or full-width temples may for example also be attached to theprofile 28. Furtherauxiliary devices 38, such as selvage tuck-in devices or cutting devices or the like, may also be attached to thisprofile 28 or to afurther profile 32, likewise arranged on theupper parts 34 of the linear guides 29. - The
levers 8, which hold theshaft 27 on both sides, are swivellably mounted coaxially with thedeflector 24 constructed as a supporting bar. - The
cloth 20 extends, as shown inFigs. 2 and3 , in a plane from the bearing surface of the cloth table 39 to theedge 41, shaped as part of a cylinder, of theplate 40, which serves asbreast beam 23. The smooth portion of theplate 40 serving as sliding table 26 and merging tangentially into theedge 41 shaped as part of a cylinder extends parallel to thecloth 20. It is clear fromFig. 2 and3 that thecloth 20 remains substantially in the same plane in the area between the bearing surface of the cloth table 39 and thebreast beam 23 when thebreast beam 23 moves between the positions according toFigs. 2 and3 . In the process, there is also virtually no movement betweencloth 20 and cloth table 39 andbreast beam 23. - The
deflector 25 is a roll, which is held by means of a supportingpart 64 between thedeflector 24 and the draw-offroller 21, which takes the form of a needle roller. The supportingpart 64 is provided with a plurality of pairs of rollers distributed over the cloth width, said pairs of rollers forming a wedge-shaped gap in which theroll 25 is accommodated. - The
breast beam 23, i.e. theplate 40, thelinear guides 29 with the cloth table 39, with theprofile 32, with theshaft 35 and with theshaft 27 with the supportingelements 49 and the supportingbar 24 serving as a deflector all take the form of one structural unit, which is arranged inholders shaft 27 is secured against sagging or bending, such that high weaving speeds and high warp tensions or high cloth tensions are possible. As is visible fromFigs. 4 and5 , in this exemplary embodiment too thecrossbar 47 is arranged between these twoholders holders deflector 25 and the supportingpart 64 thereof. - In a modified embodiment, provision is made for the
plate 40 of the sliding table 26 to be of one-piece construction with a cloth table and to be provided with elements formed thereon which constitute the upper parts for the linear guides 29. - The terry loom illustrated schematically in
Fig. 6 has a device for supplying aground warp 11 drawn off from awarp beam 10 and a device for supplying apile warp 13 drawn off from awarp beam 12. Theground warp 11 is deflected over abackrest 14 into the weaving plane. Thepile warp 13 runs over adeflector 15 to itsown backrest 16 and thence likewise into the weaving plane. Both theground warp 11 and thepile warp 13 travel to shedding devices indicated byarrows 17. Weft yarns are inserted in each case into the sheds which are formed. - As shown in
Fig. 6 to 10 , thecloth 20 formed in this way is drawn off by means of a draw-offroller 21 and wound onto acloth beam 22. Abreast beam 23 and twodeflectors roller 21 driven in the draw-off direction. Thebreast beam 23 deflects thecloth 20 downwards out of the weaving plane. The draw-offroller 21 is driven in known manner, for example by means of its own drive motor or by means of a drive derived from the loom's main drive. The draw-offroller 21 may take the form of a sand roller or a needle beam. - The
backrest 14 of theground warp 11 and thebreast beam 23 may be moved to and fro in the same direction in the direction of arrows A. Swivelling of theswivellable backrest 14 and of theswivellable breast beam 23 is effected for example by means of a drive, as described for example in the parallelGerman patent application 10 2005 028 126.5 with internal file reference P 45160 DE. In one embodiment, thebackrest 16 of thepile warp 13 is likewise driven in the same direction and likewise in the direction of arrows A, to which end a drive corresponding to the parallelGerman patent application 10 2005 028 126.5 with internal file reference P 45160 DE may be provided. In another embodiment it is provided that thebackrest 16 is held resiliently, as described in the parallelGerman patent application 10 2005 028 127.3 with internal file reference P 45163 DE. The reciprocating drive forbackrest 14 andbreast beam 23 may also be configured as is known substantially fromUS 607 377 orUS 1595 289 . - The movement of
backrest 14 andbreast beam 23 causes variation of the distance from the fell to the beat-up line of the reed, i.e., to the beat-up line to which thereed 19 approaches to the fell during beating up of a weft yarn. It is provided, for example, that after beating up a weft yarn to the fell, the fell is moved away from the beat-up line by movingbackrest 14 andbreast beam 23 to the left inFig. 6 . This position is maintained for example during the next two or four picks. Then the fell is moved back closer to the beat-up line by movingbackrest 14 andbreast beam 23 accordingly, i.e., to the right inFig. 6 . When the last inserted weft yarn is beaten up, the latter is brought up to the fell with the previously inserted weft yarns. In the process, the weft yarns slide along the warp yarns of theground warp 11, which is relatively tightly tensioned. The warp yarns of thepile warp 13 are less tensioned, such that the weft yarns carry the pile warp with them during the beat-up movement, the pile warp thus forming loops which project up and down from the surface consisting ofground warp 11 and weft yarns. - Displacement of the
cloth 20 relative to thereed 19 and thus to the beat-upline 37 takes place by means of adrive 56, which drives swivelarms 57 arranged on either side of the cloth width. Transmission bars 5, 6 are coupled to theswivel arms 57. The transmission bars 5 act onswivel levers 8, which receive thebreast beam 23. Thelever 8 is coupled to thetransmission bar 5 by means of abearing device 83. The transmission bars 6 act onswivel levers 9, which hold thebackrest 14 of theground warp 11. Provided on the swivel levers 9 arelever arms 71, which are supported by means ofsprings 72. - In the embodiment illustrated, the
breast beam 23 is held at its two ends by means oflevers 8, which may be swivelled about ashaft 60 coinciding with thedeflector 24. Thebreast beam 23 is part of a sliding table 26 comprising a cloth table 39 and aplate 40. Theedge 41, forming thebreast beam 23, of theplate 40 takes the form of part of a cylinder and is mounted rotatably on ashaft 27 by means of bearingbushes 30, said shaft being held on both sides by means of swivel levers 8. The front end of theplate 40 in the weaving direction is held by means of alinear guide 29, which is formed of alower part 33 and anupper part 34. Thelower part 33 is swivellable about ashaft 35 parallel to thebreast beam 23. Thelinear guide 29 preferably has a plurality of linear guide elements withlower part 33 and for example also withupper part 34 distributed over the cloth width. - A deflecting
element 25 betweenbreast beam 23 and draw-offroller 21 deflects thecloth 20 in such a way that the bottom side of thecloth 20, which lies against the circumference of thebreast beam 23, also comes to lie against the circumference of the draw-offroller 21. To this end, there is formed betweenbreast beam 23 and draw-off roller 21 aloop element 25. Downstream of the draw-offroller 21 there is provided a further deflectingelement 58, such that thecloth 20 exhibits the greatest possible angle of wrap with the draw-offroller 21, which is of the order of 270° or more. The deflectingelement 25 belongs to a deflectingdevice 59, which is inserted into the terry loom after theloop breast beam 23 and draw-offroller 21. The deflectingelement 25 is a bar, which is solid or takes the form of a tube. This is supported against sagging by means of a supportingbar 65, which is likewise solid or tubular with a round or rectangular cross-section. Between the deflectingelement 25 in the form of a bar and the supportingbar 65 there are arranged supporting elements. The deflectingdevice 59 may be configured approximately in the form of a ladder. In the embodiment shown, the supportingbar 65 takes the form of an angle section, which is provided withbraces 76. The deflectingelement 25 is attached non-rotatably by means offastening elements 66 to the leg of theangle section 65 directed towards the deflectingelement 25. - The deflecting
element 25 with itsends 75 is inserted into bearingshells 42 open at the top, which are attached to theside parts 67 of the loom. The supportingbar 65 is likewise fixed to theside parts 67. As is clear fromFigs. 9 and 10 ,abutments 68 are provided on theside parts 67, to which abutments the supportingbar 65 is attached by means ofscrews 69. -
Fig. 11 shows a modified embodiment in which the deflectingelement 25 constructed as a roller is mounted in the bearingshells 42 by means of pivot bearings. The roller-shaped supporting element is thus rotated as a result of the friction between its surface and the cloth. Support is provided by a supportingbar 65 in the form of an angle corresponding to the exemplary embodiment according toFigs. 9 and 10 . At the end of theleg 70 of the supporting element directed towards the deflectingelement 25 there are attached pillow blocks 73, which carryrollers 74 which support the roller-shapeddeflecting element 25. - As has already been mentioned, first of all the loop is laid between
breast beam 23 and draw-offroller 21, the deflectingdevice 59 then being inserted into said loop. The deflectingdevice 59 is then secured in the inserted position illustrated by means of the above-mentioned securing elements, i.e. thescrews 69. It is conveniently also provided that the deflectingdevice 59 is secured laterally of the cloth against diverting movements in the direction of the draw-offroller 21 and thedeflector 24. In the exemplary embodiment this is effected by means of the bearingshells 42 provided on theside parts 67. - The supporting
bar 65 for the deflectingelement 25 is arranged in such a way that it is arranged substantially on the angle bisector provided between the twobranches bar 65 is subjected to only slight bending stress, such that the deflectingelement 25 is not deformed in the direction of the draw-offroller 21 or thebreast beam 23. - If the
breast beam 23 is moved relative to the draw-offroller 21 by means of thelevers 8, thedeflector 24 has the effect that thecloth 20 virtually does not move relative to thedeflector 24 and thus also does not move relative to the deflectingelement 25. The friction between thecloth 20 and thedeflector 24 and the deflectingelement 25 to a considerable extent prevents thecloth 20 from moving relative to the draw-offroller 21 when thebreast beam 23 is moved to and fro to produce terry cloth. - The deflecting device according to the invention may be used in all types of loom and in particular also in all types of terry loom. For example, the deflecting device may also be used in a terry loom in which the terry cloth is produced by means of sley adjustment, as is known for example from
EP 1 201 807 A1 . - The invention is not restricted to the exemplary embodiment illustrated. In particular, modifications are possible with regard to the deflecting
device 59, which may be modified in particular with regard to the bracing of the deflectingbar 25. - In
Fig. 12 another embodiment is shown, where apart 82 of thecloth 20 is deflected by adeflector element 79 arranged between thedeflector 24 and the draw-offroller 21. Thedeflector element 79 consists of a flexible plate and is intended to bring the orientation of the pile loops of thecloth 20 in the same direction before thecloth 20 comes into contact with the outer side of the draw-offroller 21. Thedeflector element 79 is supported by acrossbar 78 extending between the side parts of the loom. Downstream of the draw-offroller 21, thecloth 20 is further guided by means ofdeflectors cloth 20 is guided along the outer side of the draw-offroller 21. In an alternative, not shown, the draw-offroller 21 is arranged approximately in the vicinity below theshaft 35, whereby thecloth 20 is guided around thedeflector 24. In this embodiment, the bottom side of thecloth 20 will contact the outer side of the draw-offroller 21. - The invention is not restricted to the exemplary embodiments illustrated nor to a terry loom which operates with weft yarn insertion in the manner of air-jet looms. The invention may also be used straightforwardly in terry looms which take the form of rapier looms, projectile looms, shuttle looms, gripper shuttle looms, water jet looms or any other type of loom. For example, weft insertion devices may be provided as are known from looms other than air-jet looms, for example the weft insertion systems found in looms with grippers, shuttle looms, projectile looms, gripper shuttle looms or other looms.
Claims (18)
- A structural unit with a breast beam, a cloth table and a sliding table for use in a terry loom, the terry loom comprising devices for supplying a ground warp (11) and for supplying a pile warp (13) and a device for moving cloth (20), which has been formed to and fro relative to the device (18, 19) for beating up the weft yarns,
characterised
in that the sliding table (26) connects the breast beam (23) with the cloth table (39) moving therewith,
in that the sliding table (26) comprises a plate (40) arranged upstream of the breast beam (23), which plate (40) has an edge (41) in the shape of part of a cylinder, which edge (41) serves as deflector of the breast beam (23) and is mounted on a first shaft (27) so as to be rotatable about the central axis of the first shaft (27), and
in that the plate (40) is guided by means of at least one linear guide element (29) oriented substantially in the draw-off direction of the cloth (20). - A structural unit according to claim 1, characterised in that the plate (40) is guided in the area remote from the edge (41) in the shape of part of cylinder by means of at least one linear guide element (29).
- A terry loom with devices for supplying a ground warp (11) and a pile warp (13), with a device (18, 19) for beating up weft yarns and with a device (21, 23, 24, 25) for drawing off cloth (20) which comprises a breast beam (23), the to-and-fro motion of at least the breast beam (23) allowing movement of the cloth (20) relative to the device (18, 19) for beating up the weft yarns, and with a structural unit according to claim 1 or 2, wherein
a sliding table (26) is provided, which connects the breast beam (23) with a cloth table (39) moving therewith,
the sliding table (26) comprises a plate (40) arranged upstream of the breast beam (23), which plate (40) has an edge (41) in the shape of part of a cylinder, which edge (41) serves as deflector of the breast beam (23) and is mounted on a first shaft (27) so as to be rotatable about the central axis of the first shaft (27), and
the plate (40) is guided by means of at least one linear guide element (29) oriented substantially in the draw-off direction of the cloth (20). - A terry loom according to claim 3, characterised in that the plate (40) develops into the breast beam (23).
- A terry loom according to any one of claims 3 or 4, characterised in that the first shaft (27) is supported by means of supporting elements (49) on a supporting bar (24) extending parallel thereto.
- A terry loom according to any one of claims 3 to 5, characterised in that the at least one linear guide element (29) serves to accommodate the cloth table (39).
- A terry loom according to any one of claims 3 to 6, characterised in that the at least one linear guide element (29) is mounted so as to be rotatable about a second shaft (35) extending parallel to the breast beam (23).
- A terry loom according to claim 7, characterised in that the at least one linear guide element (29) comprises an upper part (34) to which the plate (40) and the cloth table (39) are attached and which is connected by means of a linear guide which is form-fitting preferably transversely of the guide direction to a rotatably mounted lower part (33).
- A terry loom according to any one of claims 3 to 8, with a device for drawing off cloth (20) which comprises a draw-off roller (21), characterised in that there is provided between breast beam (23) and draw-off roller (21) a deflecting device (59) which deflects the cloth (20) in such a way that the bottom side of the cloth (20) faces the outer side of the draw-off roller (21).
- A terry loom according to claim 9, characterised in that the deflecting device (59) may be attached between breast beam (23) and draw-off roller (21) and deflects the cloth (20) into a loop (54, 55).
- A terry loom according to claim 9 or 10, characterised in that the deflecting device (59) may be removed from the loom after loosening of a securing device (69).
- A terry loom according to any one of claims 10 or 11, characterised in that the breast beam (23) is swivellable about a third shaft (60) parallel thereto, and in that the loop (54, 55) is located between draw-off roller (21) and said third shaft (60).
- A terry loom according to claim 12, characterised in that the shaft (60), about which the breast beam (23) may be swivelled, forms a deflector (24) for the cloth (20) between breast beam (23) and deflecting device (59).
- A terry loom according to any one of claims 9 to 13, characterised in that the deflecting device (59) comprises a deflecting element (25), which is held by a supporting bar (65) via one or more fastening elements (66).
- A terry loom according to any one of claims 9 to 14, characterised in that supporting element(s) (64,65,66,70,76) are arranged at least approximately on the angle bisector between the branches (54, 55) of the loop of cloth (20).
- A terry loom according to claim 14 or 15, characterised in that the deflecting element (25) is a rotatably mounted roller.
- A terry loom according to any one of claims 9 to 16, characterised in that devices (4, 7, 56, 57, 5, 6, 63, 71, 8) are provided for moving the cloth (20) to and fro relative to the device (18, 19).
- A method for drawing off cloth (20) produced on a terry loom according to any of claims 3 to 17, which cloth (20) is drawn off by means of a draw-off roller (21) and runs over a breast beam (23) arranged up-stream of the draw-off roller (21), characterised in that the cloth (20) is deflected as a loop (54, 55) between the breast beam (23) and the draw-off roller (21) in such a manner that it faces the circumference of the draw-off roller (21) with the same side as it faces the circumference of the breast beam (23) while forming an angle of wrap of at least 180° for the draw-off roller.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510028124 DE102005028124A1 (en) | 2005-06-10 | 2005-06-10 | Web rubbing machine consists of one system to attach filling fibres and another system to remove tissue and movable breast beam that moves relative to system for attaching filling fibres and being linked to sliding table |
DE200510028125 DE102005028125A1 (en) | 2005-06-10 | 2005-06-10 | Terry towel loom has reversing roller positioned between breast beam and web release beam |
PCT/EP2006/005408 WO2006131324A2 (en) | 2005-06-10 | 2006-06-07 | Terry loom |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1899515A2 EP1899515A2 (en) | 2008-03-19 |
EP1899515B1 true EP1899515B1 (en) | 2016-01-20 |
Family
ID=36940273
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06754174.8A Active EP1899515B1 (en) | 2005-06-10 | 2006-06-07 | Terry loom |
Country Status (3)
Country | Link |
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EP (1) | EP1899515B1 (en) |
BR (1) | BRPI0613489B8 (en) |
WO (1) | WO2006131324A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019228655A1 (en) | 2018-05-31 | 2019-12-05 | Picanol | Backrest assembly for pile warp threads in a terry weaving machine |
BE1026809A1 (en) | 2018-11-28 | 2020-06-22 | Picanol Nv | Towing device for pile warp threads in a towel weaving machine |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1023396B1 (en) * | 2015-09-03 | 2017-03-06 | Picanol Nv | BENDING DEVICE FOR A WEAVING MACHINE AND METHOD FOR MANUFACTURING A BENDING DEVICE |
BE1024006B1 (en) * | 2016-04-04 | 2017-10-27 | Picanol Nv | Bending device for a weaving machine and method for manufacturing a bending device |
WO2017036853A1 (en) * | 2015-09-03 | 2017-03-09 | Picanol | Deflecting device for a weaving machine and method for manufacturing a deflecting device |
DE102019208377B3 (en) * | 2019-06-07 | 2020-04-23 | Lindauer Dornier Gesellschaft Mit Beschränkter Haftung | Device for making the line of tie even when weaving terry fabrics |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US607377A (en) | 1898-07-12 | hutchins | ||
CH430609A (en) * | 1964-07-04 | 1967-02-15 | Sulzer Ag | Device for the production of weft-grade fabrics |
CH497578A (en) | 1968-10-08 | 1970-10-15 | Sulzer Ag | Loom with fabric temple |
CH543620A (en) | 1971-10-11 | 1973-10-31 | Sulzer Ag | Method and device for weaving terry towels |
BE1004309A3 (en) | 1989-07-17 | 1992-10-27 | Picanol Nv | SUPPORT DEVICE FOR TRAIL in a weaving machine. |
-
2006
- 2006-06-07 BR BRPI0613489A patent/BRPI0613489B8/en not_active IP Right Cessation
- 2006-06-07 WO PCT/EP2006/005408 patent/WO2006131324A2/en not_active Application Discontinuation
- 2006-06-07 EP EP06754174.8A patent/EP1899515B1/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019228655A1 (en) | 2018-05-31 | 2019-12-05 | Picanol | Backrest assembly for pile warp threads in a terry weaving machine |
BE1026809A1 (en) | 2018-11-28 | 2020-06-22 | Picanol Nv | Towing device for pile warp threads in a towel weaving machine |
Also Published As
Publication number | Publication date |
---|---|
BRPI0613489B1 (en) | 2016-10-18 |
EP1899515A2 (en) | 2008-03-19 |
WO2006131324A3 (en) | 2007-05-10 |
BRPI0613489A2 (en) | 2011-01-11 |
BRPI0613489B8 (en) | 2017-03-21 |
WO2006131324A2 (en) | 2006-12-14 |
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