EP0874930A1 - Webschaft für eine webmaschine - Google Patents
Webschaft für eine webmaschineInfo
- Publication number
- EP0874930A1 EP0874930A1 EP97901536A EP97901536A EP0874930A1 EP 0874930 A1 EP0874930 A1 EP 0874930A1 EP 97901536 A EP97901536 A EP 97901536A EP 97901536 A EP97901536 A EP 97901536A EP 0874930 A1 EP0874930 A1 EP 0874930A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strands
- heald frame
- profile rail
- rail
- insert
- 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
- 239000004033 plastic Substances 0.000 claims description 8
- 230000013011 mating Effects 0.000 claims description 5
- 238000013459 approach Methods 0.000 claims description 2
- 238000009941 weaving Methods 0.000 description 12
- 230000035939 shock Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
- D03C9/00—Healds; Heald frames
- D03C9/06—Heald frames
- D03C9/0608—Construction of frame parts
- D03C9/0616—Horizontal upper or lower rods
- D03C9/0633—Heald bars or their connection to other frame parts
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
- D03C9/00—Healds; Heald frames
- D03C9/06—Heald frames
- D03C9/0691—Arrangements of means for damping or noise reduction
Definitions
- the invention relates to a heald frame for a loom, which is provided with an upper and a lower profile rail for holding strands, which are held on the profile rails by means of eyelets provided in the area of their ends.
- heald frames of the type mentioned initially form a so-called shaft device.
- the individual heald frames of this shaft device are raised and lowered alternately according to predeterminable patterns by means of a dobby machine, in order to form weaving sheds from the warp threads guided by the strands, into which a weft thread is inserted.
- the profile rails and the eyelets of the strands are designed in such a way that in one direction of movement of the heald frame one of the profiled rails lies against a mating surface of the eyelet of the strands and takes these strands with them. In the other direction of movement, the other profile rail with a driving surface takes along a counter surface of the eyelets of the strands assigned to it.
- the heald frame When the heald frame is in the raised position, the heddles or their eyelets are in contact with the driving surface of the upper profile rail. If the heald frame is then moved downward, the strands loosen under the influence of the tension of the warp threads and the inertial forces at a certain moment from the driving surface of the upper profile rail and then come into contact with the driving surface of the lower profile rail. In a corresponding manner, the strands detach themselves from the driving surface of the lower profile rail at a certain moment during the upward movement of the heald frame and then come into contact with the driving surface of the upper profile rail.
- one or more inserts are assigned to one of the profiled rails which, in the direction of movement of the heald frame, fill the distance between driving surfaces of this profiled rail and mating surfaces of the eyelets of the strands to such an extent that between this profiled rail and the associated eyelets of the heddles in the direction of movement of the heald frame there is less play than between the other profile rail and the eyelets of the heddles associated with this profile rail.
- the play in the direction of movement of the heald frame between one of the profile rails and the associated eyelets of the heddles is reduced to such an extent that this profile rail takes the healds with them both when the heald frames are raised and lowered, i.e. in a similar way as in DE-U 94 13 705.6 serves as a drive rail.
- the other profile rail is only used to guide the strands.
- the play can be significantly reduced, for example to less than 1 mm. The size of the shocks that occur is reduced considerably.
- the insert or inserts are made of plastic. This makes it possible to further reduce the noise that is produced, the insert or inserts also damping at least in one of the directions of movement of the heald frame.
- the inserts are attached to the strands. These inserts can, for example, be inserted in the eyelets of the strands in the manner of tabs.
- at least one strip-shaped insert is provided, which extends essentially over the entire length of the associated profile rail. Such a strip-shaped insert is easy to assemble. For example, it can be inserted into the eyelets of the strands after the strands have been attached.
- the insert is designed as a hose-like element which can be expanded by means of a controllable supply of a pressure medium.
- a pressure medium which can be supplied in such a way that there is practically no play between the strands and the profiled rail causing the entrainment.
- the pressure medium is let out of the hose-like element, this hose-like element contracts so far that the lattices can easily be moved on the profile rail.
- FIG. 1 shows a schematic representation of a view of a heald frame designed according to the invention
- the heald frame 1 shown schematically in FIG. 1 has two side struts 2, 3 which are connected by means of cross struts 4 and 5. At a predetermined distance, a profile rail 6, 7 is fastened to each cross strut 4, 5 by means of fastening parts 8 and screws 9 (see also FIGS. 10, 11). Between the rails 6 and 7 strands 10 are attached. Detachable collar elements 11 are provided on the side edges of the profile rails 6 and 7, which prevent the strands from slipping off the profile rails 6, 7. The strands 10 have a thread eye 12 for guiding warp threads, not shown.
- the strands 10, which are produced as stamped sheet metal parts, have eyelets 13, 14 in the region of both ends, each of which encloses a profiled rail 6, 7.
- the size of the eyelets 13, 14 is the same in this embodiment.
- the construction is such that only the upper profile rail 6 takes the strands 10 with them when the heald frame 1 executes its up and down movements in the direction of arrow A, i.e. in the longitudinal direction of the strands 10.
- the upper profile rail 6 has an upper driving surface 15, which is assigned a counter surface of the eyelets 13 of the strands 10.
- the profile rail 6 also has a lower driving surface 16, which is also assigned a counter surface of the eyelets 13 of the strands 10.
- a strip-shaped insert 35 is arranged between the lower driving surface 16 and the mating surface of the eyelets 13 of the lids 10 assigned to it Game determines by which the strands 10 can move relative to the upper profile rail 6 during the up and down movements of the heald frame.
- the strip-shaped insert 35 which extends essentially over the entire length of the profile rail 6, is preferably made of plastic, for example of polyamide. The possible play is limited to a value of 1 mm or less by means of the strip-shaped insert 35.
- the strands 10 can easily be moved on the profile rail 6.
- a of the heald frame (longitudinal direction of the strands 10) is at least twice the play in the area of the upper profile rail 6, which is also of the order of magnitude of 0.5 mm or even smaller can lie.
- the driving surface 15 lies against the associated counter surface of the eyelets 13 of the strands 10.
- the match exists between the lower surface 16 of the entrainment Pro ⁇ filschiene 6 and the bar 35, which is inserted loosely, ie solidifies neither to the strands 10 or on the profiled rail 6 ⁇ be.
- the lower driving surface 16 of the profiled rail 6 bears against the strip-shaped insert 35, which in turn bears against the mating surface of the eyelet 13 of the strand 10. In this position, the game exists between the upper driving surface 15 and the associated counter surface of the eyelet 13.
- the feltförmi ⁇ ge insert between the profile rail 7 and the eyelets 14 of the strands 10 is inserted, so that then the profile rail 7 ⁇ drive element serves as An, the braid 10 in the direction of movement A takes the heald frame, while the profile rail 6 only serves to guide the strands 10 in this embodiment.
- FIGS. 10 and 11 A further modified embodiment similar to FIGS. 2 and 3 is shown in FIGS. 10 and 11, the strands 10 having open eyelets 18, 19.
- the strip-shaped inserts 35 or 35 'are fastened to the profile rail 6, for example by means of gluing.
- the strands 10 are provided with hook-shaped open eyelets 22, 23, each of which has an extension oriented transversely to the direction of movement A of the heald frame, which extends in the longitudinal direction of the profile rails 6, 7, groove-shaped recesses 24, 25 of the profile rails 6, 7 protrude.
- the lower profile rail 7 is designed as a drive element for the strands and has a driving surface 30 which is effective when lifting and a driving surface 29 which is effective when lowering, the counter surfaces of the projection projecting into the recess 24 are assigned to the eyelet 23.
- a preferably also made of plastic insert 28 is provided, which limits the possible play in direction A, by which the strands 10 can move relative to the profile rail 7.
- you can individual inserts 28 are provided which are attached to the strands 10.
- a strip-shaped insert 28 is preferably provided which extends at least approximately over the entire length of the profiled rail 7 and which is inserted loosely.
- the two profile rails 6, 7 are of identical design and are arranged in mirror symmetry. Since the projection of the hook-shaped eyelet 22 projecting into the groove 25 has no function in this exemplary embodiment, this approach can also be dispensed with in the region of this eyelet 22.
- the exemplary embodiment according to FIGS. 6 and 7 corresponds in principle to the exemplary embodiment according to FIGS. 4 and 5, but the upper profile rail 6 is designed as a drive element, while the lower profile rail 7 only has a guide function.
- the eyelet 31 assigned to this lower profile rail 7 can therefore have a simplified shape, i.e. the projection projecting into the groove of the lower profile rail 7 can be dispensed with.
- the groove 25 of the profile rail 6 forms two driving surfaces 26, 27, which are assigned to the projection of the hook-shaped eyelet 22 projecting into the groove 25.
- a strip-shaped insert 32 is inserted into the groove 25 and extends essentially over the entire length of the profile rails 6. This strip-shaped insert 32 determines the play by which the strands 10 can move in direction A.
- the strip-shaped insert 32 which is likewise preferably made of plastic, can be fastened to the profiled rail 6 in the position shown in FIG. 6, for example glued on. In practice, however, it is sufficient to insert this strip-shaped insert 32 loosely, i.e. to connect neither with the profile rail 6 nor with the strands 10.
- the strands 10 provided with hook-shaped, open eyelets 22, 23 are again assigned to the lower profile rail 7 in such a way that this serves as a drive element for driving the strands 10 in the direction of arrow A.
- two inserts 33, 34 are inserted, which extend essentially over the entire length of the profile rail 7 and which are preferably made of plastic.
- These strip-shaped inserts 33, 34 form driving surfaces 29, 30, which are assigned to the projection of the hook-shaped eyelet 23 projecting into the recess in the profiled rail 7.
- inserts 17 are arranged between the lower driving surface 16 of the upper profile rail 6 and the counter surfaces of the eyelets 13 of the strands, so that this embodiment works in accordance with the embodiment according to FIGS. 2 and 3 .
- the inserts 17 are individual plastic elements, which are inserted into the eyelets 13 of the strands 10 and fastened to them.
- a tubular element is arranged as an insert 36 between a lower driving surface 16 of the profiled rail 6 and a counter surface of the eyelet 13 of the strands 10.
- This insert 36 can make contact with the lower driving surface 16 of the profile rail 6 and direct contact between the upper driving surface 15 and the eyelet 13.
- the strands 10 in the area of the eyelets 14 have no contact with the lower profile rail.
- a pressure medium is introduced into the insert 36 so that this insert expands and thus produces a play-free connection between the profile rail 6 and the strands 10.
- the insert 36 is connected to a controllable device 37, for example a pump, by means of which pressure medium can be supplied and discharged.
- the medium consists, for example, of water which is supplied or discharged by means of a pump 37.
- the device is controlled by a control unit 38.
- the insert 36 extends over the entire length of the profile rail 6, so that it interacts with all strands with certainty (FIG. 16).
- the insert 36 is therefore little least as long as the area of the profile rail in which strands 10 are arranged.
- the insert 36 is supplied with compressed air as the pressure medium.
- the device 37 would be a valve unit which can connect the insert 36 to a compressed air source.
- the insert 36 forces the strands 10 into direct contact with the upper driving surface 15 of the profiled rail 6 while at the same time making contact itself between the lower driving surface 16 of the profiled rail 6 and the strand 10 .
- the strands 10 are thus held on the profile rail 6 without play, so that no free movement of the strands 10 in their longitudinal direction A relative to the profile rail 6 is possible. In this way, shocks, vibrations and noises are avoided.
- the insert 36 formed from elastic material returns to its position according to FIG. 14, so that the strands 10 can then be moved along the profiled rail 6 without problems. This is necessary, for example, if broken warp threads have to be repaired.
- the device 37 is controlled by the control unit 38 such that a pressure medium is fed to the tubular insert 36, so that the strands 10 are in the position shown in FIG. 15. If a warp thread break is detected and the weaving machine is then stopped, the device 37 is controlled by means of the control unit 38 so that the printing medium escapes from the insert 36, so that the strands 10 then move into the position shown in FIG. 14 are located.
- the control unit 38 controls the device 37 again so that the print medium is introduced into the insert 36 again after a few seconds, so that the one shown in FIG. 15 position shown is reached.
- the strands 10 can move back to the position they had before the warp thread break after being moved along the profile rail 6 for repairing a warp thread break before the strands 10 are brought back into play-free contact with the profile rail 6 by means of the insert 36.
- the control unit 38 contains means which, depending on the state of the weaving machine, i.e. Normal weaving, non-weaving after a warp thread break or starting the weaving process after a warp thread break, control the device 37 such that print medium is fed to the insert 36 or not.
- the operating state of the weaving machine is determined on the basis of signals for warp thread breakage or for starting the weaving machine.
- a wear-resistant plastic for the individual inlays or for the inlays running as strips is also advantageous with regard to the development of noise.
- Whether the strands 10 are driven by the upper profile rail 6 or the lower profile rail 7 can be selected depending on the binding.
- fabric weaves in which more heald frames 1 are in the sub-compartment - for example in the case of a twill weave or in the case of a one-three weave or a two-three weave - the drive by means of the lower profile rail 7 is preferred.
- woven weaves in which there are more heald frames in the upper compartment - for example in the case of two-one weaves, or three-one weaves or three-two weaves - driving by means of the upper profile rail 6 is preferred.
- the invention is not restricted to the exemplary embodiments shown. It is easily possible to combine different profile rails and / or different shapes of eyelets with one another, for example hook-shaped eyelets, open and closed eyelets.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
- Window Of Vehicle (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE9600049A BE1010007A3 (nl) | 1996-01-19 | 1996-01-19 | Weefkader voor weefmachines. |
BE9600049 | 1996-01-19 | ||
PCT/EP1997/000178 WO1997026396A1 (de) | 1996-01-19 | 1997-01-16 | Webschaft für eine webmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0874930A1 true EP0874930A1 (de) | 1998-11-04 |
EP0874930B1 EP0874930B1 (de) | 2000-03-08 |
Family
ID=3889482
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97901536A Expired - Lifetime EP0874930B1 (de) | 1996-01-19 | 1997-01-16 | Webschaft für eine webmaschine |
Country Status (6)
Country | Link |
---|---|
US (1) | US6009918A (de) |
EP (1) | EP0874930B1 (de) |
JP (1) | JP4146898B2 (de) |
BE (1) | BE1010007A3 (de) |
DE (1) | DE59701221D1 (de) |
WO (1) | WO1997026396A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004057077A1 (de) * | 2002-12-19 | 2004-07-08 | Groz-Beckert Kg | Schaftrahmen und webschaft für webmaschinen |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19932685A1 (de) * | 1999-07-13 | 2001-01-18 | Grob Horgen Ag Horgen | Weblitzensystem |
DE19962977B4 (de) * | 1999-12-24 | 2012-03-08 | Picanol N.V. | Webschaft für eine Webmaschine |
FR2812007B1 (fr) * | 2000-07-24 | 2002-11-29 | Burckle Et Cie Ets | Cadre de lisse pour machine a tisser equipe d'un dispositif amortisseur de lisses et dispositif amortisseur de lisses |
DE10206130B4 (de) * | 2002-02-14 | 2016-09-01 | Groz-Beckert Kg | Webschaft mit mindestens einer Weblitze |
DE10260051B4 (de) * | 2002-12-19 | 2006-10-05 | Groz-Beckert Kg | Webschaft |
DE10260024B4 (de) * | 2002-12-19 | 2007-03-29 | Groz-Beckert Kg | Weblitze |
FR2849067B1 (fr) * | 2002-12-24 | 2005-04-29 | Staubli Sa Ets | Lisse, cadre de lisses et metier a tisser equipe d'un tel cadre |
DE10329219B4 (de) * | 2003-06-28 | 2007-04-05 | Groz-Beckert Kg | Schaftstab mit beweglichem Litzendämpfungselement |
FR2857674B1 (fr) * | 2003-07-18 | 2006-03-17 | Staubli Sa Ets | Cadre de lisse et metier a tisser pourvu d'au moins un tel cadre |
FR2857675B1 (fr) * | 2003-07-18 | 2006-01-13 | Staubli Sa Ets | Cadre lisses et metier a tisser pourvu d'au moins un tel cadre |
DE602004002625T2 (de) * | 2003-07-18 | 2007-08-16 | Staubli Faverges | Schaftrahmen und Webmaschine versehen mit mindestens einem solchen Schaftrahmen |
DE10342577B4 (de) * | 2003-09-15 | 2005-07-21 | Groz-Beckert Kg | Litze mit vermindertem Spiel |
DE10349646A1 (de) * | 2003-10-21 | 2005-06-02 | Picanol N.V. | Webschaft |
TWM286956U (en) * | 2005-10-14 | 2006-02-01 | Cooler Master Co Ltd | Heat dissipation structure |
CN103710813A (zh) * | 2013-12-25 | 2014-04-09 | 吴江市恒艺丝绸整理厂 | 一种能自减振的综框 |
CN105019095B (zh) * | 2015-07-28 | 2016-08-24 | 苏州市丹纺纺织研发有限公司 | 一种动能传递式综框 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL31734C (de) * | ||||
US3895655A (en) * | 1974-04-12 | 1975-07-22 | Rockwell International Corp | Harness frame for looms |
US4106529A (en) * | 1976-10-22 | 1978-08-15 | Steel Heddle Manufacturing Company | Heddle frame |
DE9413705U1 (de) * | 1994-08-25 | 1994-10-20 | Textilma Ag, Hergiswil | Schaftvorrichtung |
-
1996
- 1996-01-19 BE BE9600049A patent/BE1010007A3/nl not_active IP Right Cessation
-
1997
- 1997-01-16 JP JP52568897A patent/JP4146898B2/ja not_active Expired - Fee Related
- 1997-01-16 US US09/101,300 patent/US6009918A/en not_active Expired - Lifetime
- 1997-01-16 EP EP97901536A patent/EP0874930B1/de not_active Expired - Lifetime
- 1997-01-16 DE DE59701221T patent/DE59701221D1/de not_active Expired - Lifetime
- 1997-01-16 WO PCT/EP1997/000178 patent/WO1997026396A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9726396A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004057077A1 (de) * | 2002-12-19 | 2004-07-08 | Groz-Beckert Kg | Schaftrahmen und webschaft für webmaschinen |
US8146621B2 (en) | 2002-12-19 | 2012-04-03 | Groz-Beckert Kg | Metal heald frame and heald shaft for a loom |
Also Published As
Publication number | Publication date |
---|---|
US6009918A (en) | 2000-01-04 |
WO1997026396A1 (de) | 1997-07-24 |
JP4146898B2 (ja) | 2008-09-10 |
DE59701221D1 (de) | 2000-04-13 |
BE1010007A3 (nl) | 1997-11-04 |
EP0874930B1 (de) | 2000-03-08 |
JP2000503356A (ja) | 2000-03-21 |
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