CN1748051B - Pre-tensioning device for healds - Google Patents
Pre-tensioning device for healds Download PDFInfo
- Publication number
- CN1748051B CN1748051B CN200480003791.8A CN200480003791A CN1748051B CN 1748051 B CN1748051 B CN 1748051B CN 200480003791 A CN200480003791 A CN 200480003791A CN 1748051 B CN1748051 B CN 1748051B
- Authority
- CN
- China
- Prior art keywords
- heald
- piston
- tensioning apparatus
- tensioning
- cylindrical duct
- 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.)
- Expired - Fee Related
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Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
- D03C3/00—Jacquards
- D03C3/24—Features common to jacquards of different types
- D03C3/44—Lingoes
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
The invention discloses a heddle spring. To produce a heddle movement, a so-called heddle spring is needed in a jacquard loom; the heddle spring produces a tensioning force which acts on heddle wires. According to the invention, an air cylinder can be used to realize the intention. A piston is supported without friction in the air cylinder. A monofilament is used to connect the piston and the heddle wires, and consequently a piston rod for bearing a traction force to some degree is formed. The tensioning force is produced through the area difference or the pressure difference between two end surfaces of the piston. The weight of the piston and a tensioning mechanism (2) is very small, so the tensioning force can produce a quick adjustment movement, thereby quickly forming a shed and increasing the revolutions of the loom.
Description
Technical field
The present invention relates to a kind of heald tensioning apparatus, especially for the heald tensioning apparatus (Litzenspanneinrichtung) of loom.
Background technology
Usually jacquard weaving machine has a so-called hang spring, and heald cord just belongs to this class.Utilize these heald cords make warp thread where necessary from they the warp thread plane upwards or deflect down.For this reason, warp thread approximate horizontal ground is by the guide eye of a heald that generally perpendicularly is provided with.Heald heald end loop on it is connected with a harness cord (Chorfaden) in jacquard weaving machine.For example the jacquard plumb bob hangs over down on the heald end loop.The jacquard plumb bob applies a constant power that pulls down to heald.Support by harness cord from the top heald.By traction or loosening harness cord, make heald rise or decline, this realizes by a jacquard equipment.In this way can be individually or promote in groups or the decline warp thread, so that be wefting insertion formation shed open.
People labour for and obtain very high pick count.The jacquard plumb bob is just too dumb in this respect.Therefore the jacquard plumb bob is replaced by steel spring in the past.This steel spring applies a pulling force that points to downwards to heald.That can obtain per minute about 800 to 1000 like this knits latitude (Webschuss).
Steel spring must for example quicken heald downwards when shed open forms, and requires to have very big strength in described pick count for this reason.In this case, steel spring must make heald, warp thread and harness cord or hang spring quicken.This spring can be relevant with the quality of himself in order to the speed of quickening.In quick loom, harness cord can also come soon than the acceleration of spring itself to the deceleration of heald.For the acceleration to heald the process that warp thread is transported to lower shed from top shed provides support, improved the tension force of warp thread.Like this, warp thread has been supported spring when warp thread is transported to lower shed.Yet higher warp tension is a kind of additional load of warp thread, and doing has like this increased the broken yarn of warp thread number of times, thereby and causes the degradation of fabric.In contrast, it is impracticable improving spring force, and this is not only owing to may make the load of harness cord or other parts too big, and because improves the increase that spring force can cause spring weight.
An additional problem is that the accelerating performance of spring is not enough to reach the high pick count of being pursued.This causes spring, and the therefore vibration problem of whole system.So just no longer can open and close shed open reliably.
Summary of the invention
The objective of the invention is to create the approach of the operating rate that is used to improve loom thus.
This task is finished by heald tensioning apparatus according to claim 1:
Replace up to the present employed steel spring, the heald tensioning apparatus has a workpiece, and this workpiece is connected with the heald for the treatment of tensioning, and produces a kind of power that heald is loaded along tension direction by a kind of pressure effect of fluid.Preferably use gaseous fluid, for example air.Adopt this device in principle than adopting steel spring can obtain higher operating frequency.The fluid (for example air) that affacts on the workpiece does not almost have quality, therefore can produce very high acceleration in principle.Workpiece can design both little gently again by selecting suitable material and moulding.The heald tensioning apparatus of pneumatic action can satisfy loom in order to improve pick count, all required prerequisites of operating rate just like this.Because pneumatic heald tensioning apparatus can produce very fast working motion, so desired the sort of degree does not require to support by the tension force of warp thread the motion of heald like that when requiring or being unlike at least the use steel spring as the heald tensioning apparatus.Therefore can reduce the tension force of warp thread.The load that reduces to have reduced it of warp tension this means that broken string is few, and therefore can cause the fabric of better quality.
Described workpiece is a piston preferably, and it for example is bearing in the pipeline of a straight drum shape, and can move to and fro on a direction consistent with the heald tension direction.If advocating the fluid pressure difference by between its two end faces on the piston produces.This power also can produce by a kind of area difference, and just the end region by different sizes produces, and has pressure consistent or also can be different on these zones.In addition also can by overvoltage and/or low pressure be created in piston or the power that on other workpiece, occurs poor, this power difference produces and is used for making a concerted effort of tensioning heald.In this case, owing in little structure space, can produce high power, be considered to be favourable by the heald tensioning apparatus of crossing press operation.In addition owing to there is overvoltage, thus dust or the end of a thread to enter into the possibility of system very little.
Piston is separated out an operating room in tubular working cylinder.Fluid, for example air that is in overvoltage is provided for example for this operating room.Preferably operating room and a bigger surge volume are coupled together in this case.This surge volume is by a pipeline and do not have the operating room of obvious flow resistance to couple together.So do not stop the continuation from the buffering volume to the operating room of the fluid that is under the pressure to be flowed, even like this because the motion of piston makes operating room's change greatly, the pressure in the operating room also almost is constant.Piston has speed that maximum can be expected or desirable in the motion of piston.The cross section that flows freely of interface channel should be less than the free cross-section of cylindrical duct.
Piston preferably supports by an air cushion in cylindrical duct, and is sealed sufficiently.This so finishes: the inwall of piston and cylindrical duct forms a gas bearing.The air gap is preferably in the mu m range.In order to support that forming air cushion can be provided with air duct in piston, these air ducts import on its case surface, and for example provide gas from end side surface.Can ignore by the air loss that the gap produced between piston and the cylinder wall.
Piston is connected with a draw-gear, and heald is connected with this draw-gear again.This draw-gear for example can be a plastic cord (nylon monofilament, perlon monofilament), perhaps a round steel wire.Piston and cylindrical duct also can be made of plastics.Draw-gear leads by the wall of a closed circular bobbin.A plastic sleeve that draw-gear is led and the operating room is sealed for example can be set in relevant hole.In this case, draw-gear and sleeve also can so design, and promptly they are gas bearing.Formed a device that does not almost have friction and do not have wearing and tearing like this, on the whole.Adopt this device can produce the rapid movement of heald and the load that can reduce warp thread.Like this, heald tensioning apparatus according to the present invention is suitable for improving the pick count of loom.
In addition, described heald tensioning apparatus can be formed for the basis of a heald clamping system, in this clamping system, be provided with the heald tensioning apparatus of many same types abreast, and the draw-gear of a heald operation of the pre-individually respectively usefulness of tensioning of each heald tensioning apparatus.The heald tensioning apparatus of this heald clamping system can be controlled individually or totally in groups.The heald tensioning apparatus of common control can have a common surge volume.This surge volume preferably surpasses at least ten times of pistons work volume of the heald tensioning apparatus of all connections.
The invention still further relates to other favourable form of implementation, please see files such as accompanying drawing, specification, claims for details.
Description of drawings
Several embodiments of the present invention have been represented in the accompanying drawings.Accompanying drawing illustrates:
Fig. 1: the sketch of heald tensioning apparatus;
Fig. 2: according to the front view of the heald tensioning apparatus of Fig. 1;
Fig. 3: according to the sectional view of the heald tensioning apparatus of Fig. 2, wherein this cross section is to cut open along the B-B line among Fig. 2;
Figure 4 and 5: the form of implementation of the single heald tensioning apparatus that the longitudinal cross-section is represented.
The specific embodiment
Heald clamping system 1 of expression in Fig. 1.It is used for one group of heald not shown further is applied the tractive force of downward sensing.These healds are connected with the draw-gear 2 that is upwards moved by heald clamping system 1.But heald clamping system 1 pneumatic operation that is to say that the tractive force that acts on the jockey 2 is pneumatic generation.Heald clamping system 1 preferably is connected with a compressed air source not shown further by a control device 3 for this reason.Control valve 4 belongs to control device 3 with the controller 5 that is used for adjusting control valve 4.
Fig. 2 with 3 in the expression heald clamping system 1 that all jockeys 2 is applied identical tractive force.Therefore a unique compressed air joint 6 only is set.Heald clamping system 1 has a heald tensioning apparatus 7 respectively for each jockey 2.The substantially the same each other design of these heald tensioning apparatus 7.They are that can support and form as the piston 9 of workpiece by a cylindrical duct 8 and one at least respectively therein movably.The cylindrical duct 8 that is set parallel to each other is bearing on a supporting plate 11 or 12 in their upper end and their bottom respectively, and these supporting plates have corresponding hole for this reason.Cylindrical duct 8 fluids assemble hermetically in these holes.Upper bearing plate 11 is by a cover plate 14 overlap joints.This cover plate and supporting plate 11 are determined the flat chamber 15 to outer closure, and the upper shed end and the compressed air joint 6 of cylindrical duct 8 are passed in this chamber.Chamber 15 is connected with a surge volume 17 by an open-work 16 of supporting plate 11.This surge volume 17 by a wall construction 18 around.This wall construction below is by supporting plate 12 sealings, and the top is connected with supporting plate 11 hermetically.
The heald clamping system of describing so far 1 is pressed following program work:
Heald is connected on the earhole 21 with their bottom, and this heald utilizes their upper end to hang on a harness cord respectively.Each heald all has a harness eye, and a warp thread is by this harness eye guiding.Compressed air is provided for chamber 15 and buffer chamber 17 by joint 6.This compressed air for example has the pressure of 6 crust.This pressure affacts that their lower end side then is provided much lower environmental pressure on the upper side of piston 9.The power that a kind of downward sensing correspondingly on each jockey 2, occurs.At this moment if all or single harness cord slows down suddenly, because in order to form the corresponding heald of shed open and affiliated warp thread should move downward, so relevant piston 9 is by jockey 2 traction healds downwards.Because its deadweight is very little and weight jockey 2 is very little, be can be effective so be used to quicken the whole power that is applied on the piston 9 by compressed air of heald, messenger wire and warp thread in this case.So just produced a very fast downward adjustment movement, wherein compressed air can flow into the relevant cylindrical duct 8 from buffering volume 17 additionally.Described cavity 15 as passage is because its cross section is big, and it is much bigger that this cross section cans be compared to the summation of cross section of all cylindrical duct most, and very little flow resistance is arranged, and the inhibitory action of piston motion therefore just do not occur hindering.Chamber 23 also is a kindred circumstances.This chamber stops the air of being discharged from cylindrical duct 8 by piston 9 hardly.
Like this, heald clamping system 1 according to the present invention can make the express adjustment movement of heald become possibility when static force is relatively lower.It to as the vibration that occurred when using steel spring to be used for the tensioning heald seldom responsive.Therefore heald clamping system 1 can improve the pick count and the revolution of loom.
Fig. 4 represents an embodiment of a heald tensioning apparatus 7.This heald tensioning apparatus is suitable for as the module that is used to assemble a heald clamping system of being made up of many such heald tensioning apparatus 7.Heald tensioning apparatus 7 has a cylinder 26.This cylinder is provided with a medium pore 27.Be provided with cushion hole 28,29 around this medium pore.Cylinder 26 is by covering 31,32 its upsides of sealing and its downside.These lids have a groove 33,34 in the side towards cylinder 26 respectively, by these grooves cushion hole 28,29 are communicated with medium pore 27.When a plurality of heald tensioning apparatus 7 are assembled into a module surge volume 28,29 of adjoining heald tensioning apparatus 7 with in pairs or mode in groups combine, and a plurality of medium pore 27 is connected to each other.Can make the distance minimization between the medium pore 7 like this.
Piston 9 is connected with jockey 2.This jockey carries out 19 guiding by being assemblied in the pilot sleeve that covers in 31.Piston 9 is provided with a tubular continuous part (Fortsatz) 35.The diameter of this continuous part is greater than the diameter of jockey 2, and its length surpasses the maximum lift of piston 9.Therefore, this continuous part 35 all passes one and is arranged on the hole of covering in 32 36 in each operating position of piston 9, and the wall in this continuous part and hole forms a gas bearing like this.
In operation the time is that all inner cavity chamber-just medium pore 27, cushion hole 28,29 provide pressure medium, for example compressed air by a joint that is not shown specifically.Because the area difference between the lower surface of the upper end of piston and its annular, pressure on the both sides described identical size, that affact piston 9 (for example 5 crust) produces the tractive force of a downstream, this tractive force outwards transmits by jockey 2, and can be used as the reaction force that is used for heald of tensioning and is used to make this heddle movement.
Fig. 5 represents the form of implementation of a remodeling.This form of implementation has a cylindrical duct 8, and this cylindrical duct fuses at its bottom and a seal 37.Piston 9 is bearing in this cylindrical duct movably.This cylindrical duct 8 is surrounded by a sleeve pipe 38.This sleeve pipe and cylindrical duct 8 are provided with one heart, and and this cylindrical duct form the surge chamber 39 of an annular.This surge chamber closes by a lid 41 in its upper end, and jockey 2 is by this lid guiding.In lid 41, assembled a pilot sleeve 19 for this reason.Keep a spacing between the upper side end of cylindrical duct 8 and lid 41, the operating room and the surge chamber 39 that will be separated by piston 9 in cylindrical duct 8 by this spacing couple together.Compressed air joint 6 is used for to surge chamber 39, also therefore provides compressed air to the operating room.
In order to produce a kind of heddle movement, in jacquard weaving machine, need a kind of so-called heald spring, this heald spring produces a kind of tensile force that affacts on the heald.According to the present invention, a kind of air cylinder can be made this usefulness.In this air cylinder, do not have and frictionally supporting a piston.A monofilament links together piston and heald, and therefore forms a kind of piston rod that bears tractive force to a certain extent.Produce a kind of tensile force by area difference or pressure differential between two end faces of piston.Because the weight of piston and strainer 2 is very little, this tensile force can produce very fast adjustment movement, and therefore very fast formation shed open, and improves the revolution of loom.
Reference numerals list
1 heald clamping system, 15 chambers, 27 medium pores
2 traction or jockey 16 open- works 28,29 cushion holes
3 control device, 17 surge volumes, 31,32 lids
4 control valves, 18 wall constructions, 33,34 grooves
5 controllers, 19 pilot sleeves, 35 continuous parts
6 compressed air joints, 21 earholes, 36 holes
7 heald tensioning apparatus, 22 cover plates, 37 seals
8 cylindrical duct, 23 chambers, 38 sleeve pipes
9 pistons, 24 filters, 39 surge chambers
11,12 supporting plates, 25 joints, 41 lids
14 cover plates, 26 cylinders
Claims (13)
1. heald tensioning apparatus (7), this tensioning apparatus has a piston (9), this piston is connected with a heald for the treatment of tensioning, and this piston has at least two opposed surfaces, the fluid pressure of different sizes is stood on described opposed surface, and like this, a fluid pressure difference acts on the piston (9), thereby exist power temporary transient at least, reciprocal different sizes, produce a power along the tension direction effect of heald by described power;
Wherein, piston (9) can be bearing in the cylindrical duct (8) movably, and like this, the piston (9) in cylindrical duct (8) seals at least one operating room with one in its end side surface; And
Wherein, a described operating room and a surge volume (17,28,29,39) connect;
It is characterized in that piston (9) supports by an air cushion in its cylindrical duct (8).
2. according to the described heald tensioning apparatus of claim 1, it is characterized in that,, piston (9) is applied overvoltage for the side towards heald at piston (9) produces active force.
3. according to the described heald tensioning apparatus of claim 1, it is characterized in that,, piston (9) is applied low pressure for the side at the heald dorsad of piston (9) produces active force.
4. according to the described heald tensioning apparatus of claim 2, it is characterized in that described fluid pressure difference is a kind of air pressure difference.
5. according to the described heald tensioning apparatus of claim 1, it is characterized in that reciprocal and surface that stood fluid has different areas.
6. according to the described heald tensioning apparatus of claim 5, it is characterized in that consistent fluid pressure is stood on reciprocal surface.
7. according to the described heald tensioning apparatus of claim 1, it is characterized in that set a control device (3) for heald tensioning apparatus (7), it is used for influence applies effect to piston (9) fluid pressure.
8. according to the described heald tensioning apparatus of claim 1, it is characterized in that, a jockey (2) that is arranged between heald and the piston (9) leads by a hole of a wall that seals for described cylindrical duct (8) (14,31,41) hermetically.
9. according to the described heald tensioning apparatus of claim 8, it is characterized in that, be used for supporting and seal described jockey (2) at jockey (2) with around an air cushion that forms between the wall in described hole.
10. according to the described heald tensioning apparatus of claim 1, it is characterized in that this heald tensioning apparatus is used for jacquard weaving machine.
11. have a plurality of heald clamping systems according to the described heald tensioning apparatus of claim 1.
12., it is characterized in that described heald tensioning apparatus (7) can be controlled individually according to the described heald clamping system of claim 11.
13., it is characterized in that described heald tensioning apparatus (7) is combined into the group that can control jointly according to the described heald clamping system of claim 11.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2003105016 DE10305016B4 (en) | 2003-02-07 | 2003-02-07 | Biasing device for healds |
| DE10305016.7 | 2003-02-07 | ||
| PCT/EP2004/000276 WO2004072341A1 (en) | 2003-02-07 | 2004-01-16 | Pre-tensioning device for healds |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1748051A CN1748051A (en) | 2006-03-15 |
| CN1748051B true CN1748051B (en) | 2010-09-29 |
Family
ID=32863791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200480003791.8A Expired - Fee Related CN1748051B (en) | 2003-02-07 | 2004-01-16 | Pre-tensioning device for healds |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1590516B1 (en) |
| CN (1) | CN1748051B (en) |
| DE (2) | DE10305016B4 (en) |
| TW (1) | TWI248484B (en) |
| WO (1) | WO2004072341A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101058912B (en) * | 2007-05-29 | 2011-09-14 | 浙江理工大学 | Air-actuated jacquard device |
| CN103614840A (en) * | 2013-11-26 | 2014-03-05 | 江苏宋和宋智能科技有限公司 | Pneumatic jacquard device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1482640A (en) * | 1974-10-23 | 1977-08-10 | Autosyst Ltd | Warp selection devices |
| US4125135A (en) * | 1976-07-10 | 1978-11-14 | Wolfgang Ebisch | Device for exerting back-pull on the heddles of Jacquard looms |
| CN2169653Y (en) * | 1993-06-06 | 1994-06-22 | 郭明强 | Simple anti-theft detection cover of manhole |
| EP0760405B1 (en) * | 1995-08-30 | 2000-03-29 | AGM Aktiengesellschaft Müller | Shed forming device for looms |
| EP0860528B1 (en) * | 1997-02-13 | 2000-05-24 | Staubli Lyon | Tensioner and shedding mechanism with such a tensioner |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3853150A (en) * | 1972-10-03 | 1974-12-10 | E Romano | Fluid-operated device for raising warp yarns in looms |
| IT1105933B (en) * | 1977-07-26 | 1985-11-11 | Brochier Soieries J | APPARATUS FOR COMMANDING THE MOVEMENT OF THE LEADING WIRES IN A WEAVING FRAME |
| JPH0571036A (en) * | 1991-09-10 | 1993-03-23 | Nippon Filcon Co Ltd | Device for shed using heald having one supported end and method for weaving and joining using the same device |
| US5390709A (en) * | 1992-12-16 | 1995-02-21 | Martonffy; Barnabas | Fabric forming machine including pneumatic shedding apparatus and method |
-
2003
- 2003-02-07 DE DE2003105016 patent/DE10305016B4/en not_active Expired - Fee Related
-
2004
- 2004-01-16 EP EP04737241A patent/EP1590516B1/en not_active Expired - Lifetime
- 2004-01-16 DE DE502004009748T patent/DE502004009748D1/en not_active Expired - Lifetime
- 2004-01-16 WO PCT/EP2004/000276 patent/WO2004072341A1/en active Application Filing
- 2004-01-16 CN CN200480003791.8A patent/CN1748051B/en not_active Expired - Fee Related
- 2004-02-06 TW TW93102703A patent/TWI248484B/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1482640A (en) * | 1974-10-23 | 1977-08-10 | Autosyst Ltd | Warp selection devices |
| US4125135A (en) * | 1976-07-10 | 1978-11-14 | Wolfgang Ebisch | Device for exerting back-pull on the heddles of Jacquard looms |
| CN2169653Y (en) * | 1993-06-06 | 1994-06-22 | 郭明强 | Simple anti-theft detection cover of manhole |
| EP0760405B1 (en) * | 1995-08-30 | 2000-03-29 | AGM Aktiengesellschaft Müller | Shed forming device for looms |
| EP0860528B1 (en) * | 1997-02-13 | 2000-05-24 | Staubli Lyon | Tensioner and shedding mechanism with such a tensioner |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1590516B1 (en) | 2009-07-15 |
| CN1748051A (en) | 2006-03-15 |
| TW200424379A (en) | 2004-11-16 |
| DE502004009748D1 (en) | 2009-08-27 |
| EP1590516A1 (en) | 2005-11-02 |
| WO2004072341A1 (en) | 2004-08-26 |
| DE10305016A1 (en) | 2004-09-16 |
| DE10305016B4 (en) | 2007-02-01 |
| TWI248484B (en) | 2006-02-01 |
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