EP0888470A1 - Template for a power loom - Google Patents
Template for a power loomInfo
- Publication number
- EP0888470A1 EP0888470A1 EP97947830A EP97947830A EP0888470A1 EP 0888470 A1 EP0888470 A1 EP 0888470A1 EP 97947830 A EP97947830 A EP 97947830A EP 97947830 A EP97947830 A EP 97947830A EP 0888470 A1 EP0888470 A1 EP 0888470A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rod
- working
- spreader according
- longitudinal slot
- carrier
- 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.)
- Granted
Links
- 239000004744 fabric Substances 0.000 claims abstract description 63
- 238000009941 weaving Methods 0.000 claims description 23
- 239000000945 filler Substances 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 2
- 230000002411 adverse Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000003780 insertion Methods 0.000 description 7
- 230000037431 insertion Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 125000006850 spacer group Chemical group 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 239000002759 woven fabric Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 241000510097 Megalonaias nervosa Species 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008354 tissue degradation Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
- D03J1/00—Auxiliary apparatus combined with or associated with looms
- D03J1/22—Temples
- D03J1/223—Temples acting on the full width of cloth
Definitions
- the present invention relates to a rod spreader for a loom according to the preamble of claim 1.
- Rod spreaders of the type mentioned are known in practice as a component of weaving machines.
- the purpose of the rod spreader in the weaving machine is to keep the fabric web manufactured in the weaving machine constant against the forces occurring transversely to the warp thread direction when weft threads are inserted.
- the woven web that is already woven is clamped in at a small distance from the weft insertion during the weft insertion.
- This clamping is done by a tension under which the warp threads and the already woven fabric web are held.
- This tensile force presses the fabric web along two lines against a lower edge and an upper edge of the longitudinal slot in the rod carrier, as a result of which the fabric web is clamped sufficiently firmly and is thus kept at its desired width.
- the clamping between two successive wefts of the weft thread must be loosened briefly.
- the rod spreader described above with a single working rod works with tight-fitting goods, i.e. quite satisfactory in the production of fabrics with a relatively large number of weft threads per unit length;
- problems arise from practical experience in weaving medium and light-weight fabrics i.e. for fabrics with low or very low number of weft threads per unit length.
- it happens with low-shot goods that the rod jams and that an undesirably high tensile stress builds up in the fabric web, which leads to damage or
- the object of the present invention is therefore to create a rod spreader of the type mentioned at the outset which avoids the disadvantages mentioned and in which it is in particular ensured that medium-shot and low-shot goods with high quality and reliable operation can be produced in addition to tight-fitting goods.
- the rod spreader should have a simple structure and be simple and inexpensive to manufacture and be flexibly adaptable to different applications and requirements.
- a rod spreader in which a second slide rod is arranged in the rod carrier above the work rod parallel to the latter, the distance from the first slide rod being smaller than the outside diameter of the working rod, the working rod lying behind the two sliding rods as seen from the longitudinal slot.
- the second clamping of the fabric web is also released, so that the fabric web is now only held between the working bar on the one hand and the two sliding bars on the other hand. This also causes a clamping effect, which is sufficient for keeping the fabric wide; At the same time, however, the fabric is optimally protected against excessive clamping forces and the associated risks of a reduction in quality.
- the tension that is exerted on the warp thread arrangement and the fabric web can be significantly reduced; in practice the reduction can be up to about 50%.
- This reduction in tensile force also correspondingly reduces the damage or defects in the fabric caused or at least promoted by excessive tensile forces, so that the rod spreader according to the invention achieves improved fabric quality and higher productivity, in particular in the case of medium-shot and light-shot goods.
- the rod spreader can also be used without restrictions for the production of tight-fitting goods, since the rod spreader of the rod spreader can only be used with an inserted working rod without a sliding rod.
- the rod carrier is designed as a closed housing with the exception of the longitudinal slot, which is suitable for installing and removing the working rod and / or the slide rod the slide rods can be divided and / or opened.
- This design of the bar support achieves a high degree of stability, the prerequisite for this being that uniform clamping or braking of the fabric web is achieved over the entire length of the bar spreader, ie over the entire width of the fabric web.
- a further development of the housing forming the rod carrier is that it is formed by a one-part or multi-part hollow profile in which the
- Front ends are covered with closures, at least one of which is removable.
- closures at least one of which is removable.
- the rod spreader in its installed state in the weaving machine is much easier to access from its front end than from the side in which the longitudinal slot is formed.
- the hollow profile is a folded profile made of sheet metal.
- the housing forming the rod carrier be seen in cross-section in terms of its shape and size in terms of shape and number and the diameter of the work and slide bars to be accommodated therein is adapted. If the rod spreader is to be used while maintaining its housing with different numbers and / or sizes of working and sliding rods, it is advantageous that in the housing forming the rod carrier, in addition to the working and sliding rods, filling rods for filling in by the working and Slide rods not occupied rod receiving areas can be used.
- the housing forming the rod carrier is designed with or to form a plurality of separate, parallel rod receiving areas for working and sliding rods, each with its own longitudinal slot, and that the rod carrier is in several different positions with the The other weaving machine can be connected, one of the rod receiving areas being used in each position.
- either the overall position of the rod carrier can be changed in order to use a selected rod receiving area, or the housing can be converted, in particular by moving housing parts in such a way that a desired rod receiving region is used. This enables a particularly large adaptability of the rod spreader to different purposes without having to keep several different rod spreader ready.
- weaving machines In order to be able to use weaving machines as versatile as possible, ie in particular for the production of a wide variety of fabrics, weaving machines generally have devices for, among other things, height adjustment.
- the rod spreader according to the invention can advantageously also be used in this function by: the rod carrier slide rods of different diameters can be used.
- the first slide rod located in the lower part of the rod spreader By changing the first slide rod located in the lower part of the rod spreader, the lower compartment height is also changed in accordance with the change in the diameter of the slide rod, provided that the fabric web does not come into contact with the lower edge of the longitudinal slot in the rod carrier lying in front of the first slide rod.
- the width of the longitudinal slot By appropriately selecting the width of the longitudinal slot, a range of change that is sufficient in practice for the lower compartment height can be guaranteed; for example, an adjustment range of about 6 mm is sufficient for most applications.
- Rod supports are installed, with these filler rods also lying loosely in the rod support.
- the work and slide bars must have a round cross-section due to their intended function; the filler rods can be practically arbitrarily chosen in their contours and only have to fill the space to be filled as well as possible.
- An alternative to the last-described rod spreader provides that, seen from the longitudinal slot, a permanently installed filler is arranged behind the working and sliding rods, the side of which facing the rods is adapted or approximated to their contour while keeping a tissue passage free. This version of the rod spreader is particularly useful when a uniform type of fabric is to be predominantly produced with the associated weaving machine and therefore the work and slide rods are not exchanged or only very rarely.
- the permanently installed filler can simultaneously take on the function of a spacer, which keeps two profiles, which are arranged parallel to one another, at a distance to form the rod spreader.
- the connection between the profiles and the filler body is then expediently made by releasable connecting means, for example screws.
- the bottom edge and / or the top edge of the longitudinal slot / slots is / are rounded off at least on the outside.
- 3a and 3b an embodiment of the rod spreader, each with a working rod and a slide rod;
- Figure 4 shows a rod spreader in an embodiment with only one working rod
- 5a and 5b show a rod spreader with a working rod and two slide rods with a rod carrier that can be used in different positions;
- FIG. 6 shows a rod spreader with a working rod and two slide rods and with a permanently installed filler
- Fig. 7 shows an embodiment of a rod spreader with a tissue support
- Weaving machine 1 a warp let 11, from which warp threads 10 are fed to a shed formation 13 via a deflection drum 12.
- the shed formation 13 is followed, in the drawing to the left, by a weft insertion 14 with a weft stop 14 '.
- weft threads are inserted into the between the top and bottom by means of a shuttle which is moved perpendicular to the plane of the drawing lower warp threads 10 formed compartments shot.
- a rod spreader 2 which is shown exaggeratedly large in the present drawing in order to clarify its function.
- the rod spreader 2 ensures that the fabric web 10 'is kept wide against the forces which are exerted on the warp threads 10 when the weft thread is shot in the weft insertion 14 in the transverse direction of the fabric web 10'.
- the fabric web is clamped within the rod spreader 2 to a sufficient extent during the insertion of a weft thread and is thus held in its width.
- an arrangement of a total of three rods 3, 41, 42 is provided in the rod spreader 2 shown in FIG. 1, of which the rod 3 is a working rod and the rods 41, 42
- the rod spreader 2 has a rod carrier 23 which is in the form of a housing which is closed with the exception of a front longitudinal slot 21.
- a receiving area 20 is formed in the interior of the rod carrier 23, in which the mentioned rods 3, 41, 42 are arranged.
- the rod 41 is arranged as a first slide rod in the lower part of the rod carrier 23;
- the rod 42 is accommodated as a second slide rod, both rods 41, 42 running parallel to one another in the longitudinal direction of the receiving region 20 of the rod spreader 2.
- the working rod 3 When viewed from the longitudinal slot 21, the working rod 3 lies behind the first and second sliding rods 41, 42, the fabric web 10 being separated from the Weft entry 14 first comes through the longitudinal slot 21 into the rod carrier 23, then runs between the first slide rod 41 and the working rod 23, wraps around the working rod 3 by an angle of more than 180 ° and then between the working rod 3 and the second sliding rod 42 and is guided out of the rod spreader 2 again through the longitudinal slot 21.
- Both the fabric take-off 16 and the warp let-off 11 are configured as drums, where practical the fabric take-off is drivable for rotation 16 to a predetermined or predeterminable pulling force on the Fabric web 10 'to be able to exercise.
- the warp let-off 11 is designed with an adjustable braking device so that the tensile force exerted on the warp threads 10 can also be regulated from here.
- the tensile forces mentioned during the insertion of a weft thread ensure that the fabric web 10 'and the
- Warp threads 10 cannot move in the transport direction in the direction of the arrows shown, by clamping between the working rod 3 on the one hand and the two sliding rods 41, 42 on the other hand. This clamping is briefly released or at least reduced each time the weft stop 14 'is struck, so that a sufficient further transport of the fabric web 10' and the warp threads 10 is then possible in the direction of the arrows drawn thereon. Since the clamping of the fabric sheet alone between the cylindrical
- FIG. 2a of the drawing shows, likewise in cross section, an enlarged representation of the rod spreader 2 from FIG. 1, the number and arrangement of the rods 3, 41, 42 being identical to that in FIG.
- the rod carrier 23 consists of two profile parts 24, 24 'produced by folding, which are identical to one another and arranged in mirror symmetry to one another and are connected to one another to form the rod carrier 23.
- FIG. 2b shows the rod spreader 2 in an embodiment in which rods 3, 41, 42 with diameters are used which deviate upwards from those of rods 3, 41, 42 in FIG. 2a. This does not change the clamping function; but what changes is the lower compartment height of the fabric web 10 'entering the rod spreader 2.
- the fabric web 10 'in FIG. 2a runs into the rod spreader 2 at a relatively short distance above the lower edge 22' of the longitudinal slot 21, while the fabric web 10 'in FIG. 2b due to the use of a sliding rod 41 with a larger diameter runs into the longitudinal slot 21 at a correspondingly greater distance from the lower edge 22 '. In this way, the associated weaving machine no longer requires separate means for adjusting the height of the lower shed.
- Figures 3a and 3b show an embodiment of the rod spreader 2, which is particularly suitable for the production of medium-shot goods.
- the second slide rod 42 is no longer in use; So here only the working rod 3 is combined used with the first slide rod 41.
- the rod spreader 2 in contrast to the previous embodiments, causes a clamping between the working rod 3 and the upper edge of the longitudinal slot 21. In total, this results in a clamping effect of medium strength, which results in the preferred use for medium-round goods.
- Bar spreader 2 which uses only a single working bar 3 without slide bars.
- the fabric web 10 ' is clamped here both when it enters the rod spreader 2 and when it runs out between the working rod 3 on the one hand and the lower and the upper edge 22', 22 of the longitudinal slot 21 in total a particularly strong clamping effect is achieved, which makes this design of the rod spreader 2 particularly suitable for tightly packed goods.
- FIGS. 5a and 5b finally show an embodiment of the rod spreader 2 with a rod spreader 23 which can be used in different positions and with which different properties of the rod spreader 2 are realized.
- the rod spreader 2 initially consists of two profile parts 24, 24 * arranged mirror-symmetrically to one another, between which a spacer 25 which is rectangular in cross section is arranged.
- the profile parts 24, 24 ' have an essentially right-angled inward bend at their right-hand edge in FIG. 5a, the bends delimiting the longitudinal slot 21.
- This longitudinal slot 21 runs, as already above e.g. Described with reference to FIGS. 2a and 2b, the fabric web 10 * into the rod spreader 2 and also out again after wrapping the working rod 3.
- a receiving area 20, 20 ' is then permanently present on each longitudinal side of the rod spreader, so that for a change in the properties of the rod spreader 2, it only has to be turned over in total. 5a and 5b, an exchange of the working rod 3 and the sliding rods 41, 42 is also possible without any problems. It is also possible to adjust the height of the lower compartment as well as to change the clamping effect for adaptation to different types of tissue.
- FIG. 6 of the drawing shows an embodiment of the rod spreader 2, in which, similar to FIGS. 5a and 5b, two profile parts 24, 24 'are arranged mirror-symmetrically to one another and each delimit a longitudinal slot 21, 21' on their long sides.
- a permanently installed filler 5' is provided between them.
- the connecting element for the profile parts 24, 24 ' replaces this permanently installed filler 5' at the same time the loose filler bars 5 described above with reference to the embodiment according to FIG. 3b. In order to be able to take over this function, the
- the contours of sliding rods 3, 41, 42 facing side 50 'of the packing 5' are adapted or at least approximated to the arrangement of the rods 3, 41, 42. However, there remains between the side 50 'of the packing 5' and the circumferential surfaces of the rods 3, 41, 42 ⁇ tet ⁇ sufficient space for an unobstructed passage of the fabric web 10 '.
- Embodiments ge ass Figures 2a, 2b and 5a.
- changes in the number and arrangement of the bars 3, 41, 42 are also readily possible in the bar spreader 2 according to FIG. 6.
- an adaptation to different numbers and arrangements of the bars 3, 41, 42 can also be carried out here by exchanging the permanently installed packing 5 '.
- the rod spreader 2 according to FIG. 6 also has the possibility of using it in the turned position, as has already been explained with reference to FIGS. 5a and 5b.
- FIGS. 7a to 7e show embodiments of
- Rod spreader bars with a tissue support 51, 52 the number and arrangement of the rods 3, 41, 42 corresponding to that in FIG. 2a.
- the rod spreader is arranged in such a way that a housing section serves as a tissue support.
- the fabric support 51 is formed in one piece with the profile part 24.
- the tissue support 51 is formed as a separate part. It is indicated that the angular position of the
- FIGS. 8a to 8c show such a fabric support in an air weaving machine (FIG. 8a), a rapier weaving machine (FIG. 8b) and a projectile weaving machine (FIG. 8c).
- the rod spreader 2 essentially consists of a rod carrier 23, a working rod 3 and at least one sliding rod 41.
- the working rod and the sliding rod are arranged parallel to one another in the rod carrier.
- the rod spreader has the advantage that the clamping of the fabric web is low without the width of the fabric web being impaired.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
- Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19654039 | 1996-12-23 | ||
DE19654039 | 1996-12-23 | ||
PCT/IB1997/001617 WO1998028475A1 (en) | 1996-12-23 | 1997-12-19 | Temple for a power loom |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0888470A1 true EP0888470A1 (en) | 1999-01-07 |
EP0888470B1 EP0888470B1 (en) | 2001-11-28 |
Family
ID=7816027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97947830A Expired - Lifetime EP0888470B1 (en) | 1996-12-23 | 1997-12-19 | Template for a weaving loom |
Country Status (5)
Country | Link |
---|---|
US (1) | US6070620A (en) |
EP (1) | EP0888470B1 (en) |
JP (1) | JP2000505846A (en) |
DE (2) | DE19713357A1 (en) |
WO (1) | WO1998028475A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004083508A1 (en) * | 2003-03-21 | 2004-09-30 | Textilma Ag | Weaving machine, particularly a ribbon weaving machine |
CN102936789A (en) * | 2012-11-21 | 2013-02-20 | 常熟市宝沣特种纤维有限公司 | Cylindrical fabric stretching mechanism for weaving machine |
CN102936788A (en) * | 2012-11-21 | 2013-02-20 | 常熟市宝沣特种纤维有限公司 | Internal stretching device of double-layer fabric for weaving machine |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE495300C (en) * | 1927-05-19 | 1930-04-05 | Axel Engelbrekt Norrman | Spreaders for looms |
US2042415A (en) * | 1935-08-14 | 1936-05-26 | Draper Corp | Loom temple |
FR1522148A (en) * | 1967-05-09 | 1968-04-19 | Sulzer Ag | Loom |
DE3815395A1 (en) * | 1987-09-21 | 1989-03-30 | Textilma Ag | Weaving machine |
DE58901631D1 (en) * | 1988-03-18 | 1992-07-16 | Textilma Ag | GUIDE DEVICE FOR A RAILWAY. |
DE3821725A1 (en) * | 1988-04-07 | 1989-10-26 | Dornier Gmbh Lindauer | AIR WAVING MACHINE |
DE3926525A1 (en) * | 1989-08-10 | 1991-02-14 | Dornier Gmbh Lindauer | AIR WEAVING MACHINE WITH A WEB SHEET AND A WIFE ENTRANCE CHANNEL IN THE WEB SHEET |
DE4205514C2 (en) * | 1992-02-24 | 1996-01-11 | Dornier Gmbh Lindauer | Convertible trough-shaped spreader table for air jet weaving machines |
-
1997
- 1997-03-29 DE DE19713357A patent/DE19713357A1/en not_active Ceased
- 1997-12-19 DE DE59705551T patent/DE59705551D1/en not_active Expired - Lifetime
- 1997-12-19 EP EP97947830A patent/EP0888470B1/en not_active Expired - Lifetime
- 1997-12-19 JP JP10528609A patent/JP2000505846A/en active Pending
- 1997-12-19 WO PCT/IB1997/001617 patent/WO1998028475A1/en active IP Right Grant
- 1997-12-19 US US09/125,176 patent/US6070620A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9828475A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0888470B1 (en) | 2001-11-28 |
US6070620A (en) | 2000-06-06 |
JP2000505846A (en) | 2000-05-16 |
DE59705551D1 (en) | 2002-01-10 |
WO1998028475A1 (en) | 1998-07-02 |
DE19713357A1 (en) | 1998-06-25 |
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