CN1396324A - Weft haul-back control method - Google Patents
Weft haul-back control method Download PDFInfo
- Publication number
- CN1396324A CN1396324A CN 02141045 CN02141045A CN1396324A CN 1396324 A CN1396324 A CN 1396324A CN 02141045 CN02141045 CN 02141045 CN 02141045 A CN02141045 A CN 02141045A CN 1396324 A CN1396324 A CN 1396324A
- Authority
- CN
- China
- Prior art keywords
- weft yarn
- weft
- jet loom
- fluid jet
- spear
- 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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Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/34—Handling the weft between bulk storage and weft-inserting means
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
A weft pullback control method controls a weft pullback device (4) included in a fluid-jet loom (1) having a weft storage device (2) for storing a length of a weft (5) unwound from a yarn package (6), and a picking nozzle (3), and disposed between the weft storage device(2) and the picking nozzle (3) to pull back a leading end part of the weft (5) extending between the weft storage device (2) and the picking nozzle (3) after the completion of a picking operation. The weft pullback control method makes the weft pullback device (4) pull back the weft (5) by a length greater than that by which the weft (5) is pulled back while the fluid-jet loom (1) is in operation, at least in a particular period in a period between the stoppage of the fluid-jet loom (1) and the start of the first picking operation after the restart of the fluid-jet loom (1).
Description
Technical field
The present invention relates to a kind of weft yarn that is used to control the weft yarn retracting device and retract control method, this weft yarn retracting device is arranged on one and is used to store from the Weft storage device and of the weft yarn of yarn bag loose winding and throws a spear between the nozzle, thereby retracts from the weft yarn of this nozzle output of throwing a spear.
Background technology
Disclosed fluid jet loom is provided with one and places Weft storage device and the weft yarn retracting device between the nozzle of throwing a spear among the Japanese Utility Model patent No.79778/1994.This weft yarn retracting device is provided with a plurality of anchor yarns guides and a movable yarn guide spare, their compounding practices, by bend after finishing the operation of throwing a spear weft yarn at Weft storage device and the part of extending between the nozzle of throwing a spear retract weft yarn, make weft yarn can too much not stretch out from the fabric of nozzle end on fluid jet loom of throwing a spear, the next one is throwed a spear to operating and is also stablized.
Weft yarn retracts operation not only when fluid jet loom is worked, and proceeds when fluid jet loom stops.As shown in Figure 1, when the weft yarn that has than heavy unit weight hot, when being throwed a spear as Glass yarn, weft yarn is at Weft storage device and throw a spear between the nozzle and to form a big protuberance, because a very high centrifugal action is on this protuberance, even weft yarn is pulled after the operation of throwing a spear in front, the next one is throwed a spear to operating and also will be begun before weft yarn swells complete obiteration.The complete obiteration when fluid jet loom stops of this protuberance.In this state, at Weft storage device and a part of weft yarn that extends between the nozzle of throwing a spear loose, thereby because the slight power that the fluid by the nozzle ejection of throwing a spear is applied to it and being pulled along the direction of throwing a spear.Therefore as shown in Figure 2, a long section weft yarn leading section falls from the nozzle end of throwing a spear.The long leading section of the weft yarn that falls enters in the workplace easily, and by being inweaved in the fabric, perhaps is intertwined with warp thread and forms defective in fabric.
Summary of the invention
Therefore an object of the present invention is to provide a kind of weft yarn retracts control method, this method can be controlled the weft yarn retracting device that is included in the fluid jet loom, make when fluid jet loom stops and in the continuous time period of throwing a spear between the operation, do not have long weft yarn leading section and stretch out from the nozzle end of throwing a spear.
According to an aspect of the present invention, provide a kind of weft yarn that is used to control a weft yarn retracting device to retract control method, this weft yarn retracting device is included in the fluid jet loom, this fluid jet loom has a Weft storage device and a nozzle of throwing a spear, this Weft storage device is used to store the weft yarn from a yarn bag loose winding, this retracting device is arranged on this Weft storage device and this is throwed a spear between the nozzle, one throw a spear operation will be after finishing at Weft storage device and the leading section of the weft yarn that extends between the nozzle of throwing a spear retract, this method comprises: stop to reset to fluid jet loom the back in the special time period in first time period between the operation beginning of throwing a spear at fluid jet loom at least, make the weft yarn retracting device that weft yarn is retracted a length, the length that weft yarn was pulled when this length was worked greater than fluid jet loom.
" special time period " is meant: (1) stops to reset whole time period between first operation beginning of throwing a spear of back to fluid jet loom from fluid jet loom 1, (2) whole time period of stopping of fluid jet loom, (3) time period of at least one unloading motion in the progressive action process of fluid jet loom, (4) immediately following the time period before the operation beginning of throwing a spear, (5) one required time periods, perhaps (6) comprise some the time period in the time period (1) to (5).
Fluid jet loom can comprise a Weft storage device, the nozzle of throwing a spear, and a plurality of throw a spear weft yarn retracting device between the nozzle of this Weft storage device and this that is arranged on.In these a plurality of weft yarn retracting devices at least one stops the Shi Douke operation in fluid jet loom work and fluid jet loom, only operation when fluid jet loom stops of at least one in these a plurality of weft yarn retracting devices.
Therefore, stopping to reset the back from fluid jet loom in the special time period first time period between the operation beginning of throwing a spear, the length that the length that weft yarn is pulled is pulled greater than weft yarn when fluid jet loom is operated at least to fluid jet loom.
Description of drawings
Above and other objects of the present invention, feature and advantage will become clearer from the explanation of carrying out below in conjunction with accompanying drawing, wherein:
Fig. 1 realizes that in one embodiment of the present invention weft yarn retracts the schematic diagram of the fluid jet loom of control method, wherein produces weft yarn protuberance at one immediately after throwing a spear operation;
Fig. 2 is the schematic diagram that is in fluid jet loom among Fig. 1 of halted state, and wherein the weft yarn protuberance disappears;
Fig. 3 is a chart, helps to explain from fluid jet loom to stop to reset the special time period of back in first time period between the operation beginning of throwing a spear to fluid jet loom;
Fig. 4 is the calcspar that retracts operation control;
Fig. 5 is the schematic diagram that is provided with the fluid jet loom of two weft yarn retracting devices, and this fluid jet loom has realized that the weft yarn in one embodiment of the present invention retracts control method.
The specific embodiment
Fig. 1 and 2 illustrates the major part of the system of throwing a spear that comprises in the fluid jet loom 1.This system of throwing a spear comprises a Weft storage device 2, throw a spear a nozzle 3 and a weft yarn retracting device 4, and this Weft storage device 2 comprises that a rotary yarn guide 7, keeps pin 8 and one storage cylinder 9.The weft yarn 5 of pulling out from yarn bag 6 passes through rotary yarn guides 7.Part weft yarn 5 is by keeping pin 8 to remain on the storage cylinder 9, and 7 rotations of rotary yarn guide are twined weft yarn 5 around storage cylinder 9.The weft yarn 5 that is stored in like this on the storage cylinder 9 is throwed a spear by the throwing a spear operation of the nozzle 3 of throwing a spear.Keep pin 8 to advance and shrink to storage cylinder 9 from storage cylinder 9 by an actuator.
Weft yarn 5 extends in the nozzle 3 of throwing a spear through weft yarn retracting device 4.Weft yarn retracting device 4 is arranged on Weft storage device 2 and throws a spear between the nozzle 3, and the weft yarn 5 that extends through the nozzle 3 of throwing a spear is retracted.Weft yarn retracting device 4 comprises two fixing yarn guide spares 11 and 12, thereby one is bearing in the movable yarn guide spare 13 that moves on the arm between anchor yarns guide 11 and 12, thereby an arm that is used for this movable yarn guide spare 13 of swivel bearing moves the revolving actuator 14 of this movable yarn guide spare 13, and one retracts controller 15.Anchor yarns guide 11 and 12 is bearing on the unshowned framework regularly.This movable yarn guide spare 13 of this arm one end bearing and the other end are connected on the axle of revolving actuator 14.As seeing among Fig. 1 and 2, actuator 14 is rotated counterclockwise the arm of this movable yarn guide spare 13 of supporting, increasing the length of the part that weft yarn 5 extends between anchor yarns guide 11 and 12, thereby the part that weft yarn 5 extends through the nozzle 3 of throwing a spear is retracted.
Retract controller 15 control actuators 14.Retract controller 15 and receive an operation signal S1 and a timing signal S3 from a loom controller 16.As seeing among Fig. 1, when fluid jet loom 1 is being operated, after the operation of throwing a spear from, cut the weft yarn 5 of having throwed a spear by a yarn cutter 22, to follow closely next throw a spear the operation before time between time period in, actuator 4 is rotated counterclockwise this arm, movable yarn guide spare 13 is moved away from two anchor yarns guides 11 and 12, thereby the leading section that will extend through weft yarn 5 predetermined lengths of the nozzle 3 of throwing a spear retracts.When fluid jet loom 1 stops, loom controller 16 sends a stop signal S2 and timing signal S3 to retracting controller 15, operate this actuator 14 and be used to retract operation, the leading section of weft yarn 5 is retracted a predetermined length, on fluid jet loom 1, knitted in the fabric 24 with the leading section that prevents weft yarn 5.
Loom controller 16 is measured the position, angle of a main shaft 18 that comprises in the fluid jet loom 1, sends timing signal S3 to retracting controller 16, and carries out for the necessary control operation of the operation of fluid jet loom 1.Retract the structure of controller 15 shown in Fig. 4.
When fluid jet loom 1 work, between Weft storage device 2 and anchor yarns guide 11, form weft yarn protuberance and continue existence.Therefore, the leading section of weft yarn 5 extends towards fabric 24 hardly.But because weft yarn 5 stops to form protuberance, and the centrifugal force that acts on when fluid jet loom 1 stops on the weft yarn 5 disappears, at Weft storage device 2 and the leading section of the weft yarn 5 that extends of throwing a spear between the nozzle 3 loose, thereby weft yarn 5 is because the slight power that the fluid that sprays by the nozzle 3 of throwing a spear is applied to it and along throwing a spear the loose part corresponding length of direction pulling one with weft yarn 5 leading sections, and one section weft yarn 5 stretches out from the end of the nozzle 3 of throwing a spear.Therefore, the leading section that weft yarn 5 stretches out from nozzle 3 ends of throwing a spear stops and accidental inweaving in the fabric 24 when being in the maintenance operation process at fluid jet loom 1 easily, perhaps twines with yarn cutter 22 or warp thread 23 and form defective in fabric 24.
Retracting controller 15 in one embodiment of the present invention finishes a weft yarn and retracts control method.This weft yarn retracts control method and is stopping to reset to fluid jet loom 1 back from fluid jet loom 1 in the special time period first time period between the operation beginning of throwing a spear at least, operation weft yarn retracting device 4, weft yarn 5 is retracted a length, the length that this length is pulled greater than weft yarn 5 when fluid jet loom 1 is operated.Thereby having prevented at Weft storage device 2 and the leading section of the weft yarn 5 that extends of throwing a spear between the nozzle 3 is pulled out a length from the nozzle 3 of throwing a spear, this length is corresponding with the loose part of weft yarn 5 leading sections that the slight power that is applied to it owing to the fluid by nozzle 3 continuous injections of throwing a spear produces.Therefore stopping to reset the back from fluid jet loom 1 in the special time period first time period between the operation beginning of throwing a spear to fluid jet loom 1, the leading section of weft yarn 5 can not stretch out too much from nozzle 3 ends of throwing a spear, thereby the leading section of weft yarn 5 can not inweaved in the fabric 24 by accidental, can not be intertwined with yarn cutter 22 and warp 23 yet.
As shown in Figure 3, this special time period is meant: (1) stops to reset whole time period between first operation beginning of throwing a spear of back to fluid jet loom 1 from fluid jet loom 1, (2) whole time period of stopping of fluid jet loom 1, (3) time period of at least one unloading motion in the progressive action process of fluid jet loom 1, (4) immediately following the time period before the operation beginning of throwing a spear, (5) one required time periods, perhaps (6) comprise some the time period in the time period (1) to (5).
With reference to Fig. 4, weft yarn retracts controller 15 and comprises that a controlled condition setup unit 19, retracts a control module 20 and a driver element 21.Operation controlled condition setup unit 19, retract controlled condition with regulation, comprise for the weft yarn type length that weft yarn is pulled when fluid jet loom 1 is worked, for the weft yarn type length that weft yarn is pulled when fluid jet loom 1 stops, correspond respectively to the position, angle of the main shaft 18 that retracts beginning and finish, under fluid jet loom 1 halted state, correspond respectively to the position, angle of the main shaft 18 that this special time period begins and finish.The controlled condition that retracts of defined is stored in and retracts in the storage device that comprises in the control module 20.
When fluid jet loom 1 work, retract control module 20 detects main shaft 18 according to timing signal S3 position, angle, at a specific time period inner control driver element 21 that retracts, as shown in Figure 4, be rotated counterclockwise the arm of the movable yarn guide spare 13 of supporting, weft yarn 5 leading sections are retracted from the nozzle 3 of throwing a spear.When operation signal S1 stops and when retracting control module 20 and send stop signal S2, retract control module 20 control driver elements 21, make weft yarn retracting device 4 in this predetermined special time period, the weft yarn leading section be retracted a length, the length that weft yarn was pulled when this length was worked greater than fluid jet loom 1.Therefore, when fluid jet loom 1 stops, and when the protuberance that the part of being extended between Weft storage device 2 and anchor yarns guide 11 by weft yarn 5 forms disappears, weft yarn retracting device 4 retracts a length with weft yarn 5 leading sections, this length is corresponding with the loose part of weft yarn 5 leading sections that cause owing to the disappearance of swelling, the length that weft yarn is pulled when working greater than fluid jet loom.Thereby prevented at Weft storage device 2 and the leading section of the weft yarn 5 that extends of throwing a spear between the nozzle 3 because the slight power that the fluid by nozzle 3 continuous injections of throwing a spear is applied to it and pulling out from the nozzle 3 of throwing a spear.Therefore the leading section of weft yarn 5 can not stretch out too much from nozzle 3 ends of throwing a spear, thereby the leading section of weft yarn 5 can not inweaved in the fabric 24 by accidental, can not be intertwined with yarn cutter 22 and warp 23 yet.
Fig. 5 illustrate one to fluid jet loom 1 similar shown in Fig. 1, difference is, the fluid jet loom shown in Fig. 5 is provided with two and places Weft storage device 2 and throw a spear weft yarn retracting device 4a and 4b between the nozzle 3.Among weft yarn retracting device 4a and the 4b at least one, weft yarn retracting device 4a for example is in fluid jet loom 1 work with stop the Shi Douke operation and retract the weft yarn 5 of a regular length.And at least one another weft yarn retracting device, weft yarn retracting device 4b for example, only operation and retract the weft yarn 5 of a regular length when fluid jet loom 1 stops.The position of weft yarn retracting device 4a and 4b can exchange.
Though the fluid jet loom of describing as an example 1 is provided with a revolving actuator 14 above, fluid jet loom 1 also can be established a linear actuators and replace revolving actuator 14.Fluid jet loom 1 is not that one or two weft yarn retracting device must be set, and three or more weft yarn retracting devices can be set.The quantity of weft yarn retracting device will consider that the weft length that is pulled determines.When fluid jet loom 1 is when being provided with the multicolour loom of a plurality of throw a spear nozzle and a plurality of Weft storage devices that are respectively applied for the storage and the different weft yarns of throwing a spear, a plurality of weft yarn retracting devices being used in combination with the nozzle of throwing a spear respectively, thereby throwing a spear different weft yarns respectively.
As from the explanation of front clearly, according to the present invention, the weft yarn that is used for controlling the weft yarn retracting device that is included in fluid jet loom retracts control method, make the weft yarn retracting device stop to reset the back from fluid jet loom in the special time period first time period between the operation beginning of throwing a spear at least to fluid jet loom, weft yarn is retracted a length, the length that this length is pulled greater than weft yarn when fluid jet loom is worked.Therefore working as fluid jet loom stops, and when the protuberance that the part of being extended between Weft storage device and anchor yarns guide by weft yarn forms disappears, the weft yarn retracting device retracts a length with the weft yarn leading section, this length is corresponding with the loose part of the weft yarn leading section that causes owing to the disappearance of swelling, the length that weft yarn is pulled when working greater than fluid jet loom.Thereby prevented at Weft storage device and the leading section of the weft yarn that extends between the nozzle of throwing a spear is pulled out from the nozzle of throwing a spear.Therefore, the leading section of weft yarn can not stretch out too much from the nozzle end of throwing a spear, thereby in the setting operation before fluid jet loom is reset, the leading section of weft yarn can not inweaved in the fabric by accidental, can not be intertwined with the material around yarn yet.
When fluid jet loom is provided with a plurality of weft yarn retracting device, at least one weft yarn retracting device stops the Shi Douke operation and the weft yarn of a regular length is retracted at fluid jet loom work and fluid jet loom, and the only operation and the weft yarn of a regular length is retracted when fluid jet loom stops of at least one another weft yarn retracting device.Therefore, the leading section of weft yarn can both correctly retract when fluid jet loom is worked and when stopping.
Though the present invention describes with its preferred embodiment with certain particularity, clearly, can carry out many changes and variation therein.Therefore be appreciated that under the situation that does not break away from the scope of the invention and spirit, can realize the present invention here in the mode outside being described.
Claims (2)
1. a weft yarn that is used to control a weft yarn retracting device (4) retracts control method, this weft yarn retracting device (4) is included in the fluid jet loom (1), this fluid jet loom (1) has a Weft storage device (2) and a nozzle (3) of throwing a spear, this Weft storage device (2) is used for storing the weft yarn (5) from yarn bag (a 6) loose winding, this retracting device (4) is arranged between this Weft storage device (2) and this nozzle of throwing a spear (3), retract at a leading section of throwing a spear the weft yarn (5) that operation will extend after finishing between this Weft storage device (2) and this nozzle of throwing a spear (3), above-mentioned weft yarn retracts control method and comprises: stopping to reset to fluid jet loom (1) back from fluid jet loom (1) in the special time period first time period between the operation beginning of throwing a spear at least, make this weft yarn retracting device (4) that weft yarn (5) is retracted a length, the length that weft yarn (5) was pulled when this length was worked greater than fluid jet loom (1).
2. weft yarn according to claim 1 retracts control method, wherein this fluid jet loom (1) comprises a plurality of weft yarn retracting device (4a that are arranged between Weft storage device (2) and the nozzle of throwing a spear (3), 4b), these a plurality of weft yarn retracting device (4a, 4b) at least one worked and stopped Shi Douke at fluid jet loom (1) and operate, these a plurality of weft yarn retracting devices (4a, 4b) only operate when stopping at fluid jet loom (1) by at least one.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001210297A JP3654350B2 (en) | 2001-07-11 | 2001-07-11 | Weft pullback control method |
| JP210297/2001 | 2001-07-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1396324A true CN1396324A (en) | 2003-02-12 |
| CN1283862C CN1283862C (en) | 2006-11-08 |
Family
ID=19045792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02141045 Expired - Fee Related CN1283862C (en) | 2001-07-11 | 2002-07-11 | Weft haul-back control method |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1310587A3 (en) |
| JP (1) | JP3654350B2 (en) |
| CN (1) | CN1283862C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054757B (en) * | 2007-05-15 | 2011-04-20 | 江苏万工科技集团有限公司 | Weft selector for jet loom |
| CN109415850A (en) * | 2016-07-06 | 2019-03-01 | Iro有限公司 | Form the weft yarn feed apparatus of Intermediate yarn buffer and the method for controlling weft yarn feed apparatus |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITTO20050469A1 (en) * | 2005-07-07 | 2007-01-08 | L G L Elecrtronics S P A | YARN RECOVERY DEVICE FOR TEXTILE MACHINES |
| JP5163301B2 (en) * | 2008-06-10 | 2013-03-13 | 株式会社豊田自動織機 | Operation method of weft retractor in fluid jet loom |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5926554A (en) * | 1982-08-04 | 1984-02-10 | 日産自動車株式会社 | Weft yarn return apparatus in fluid jet type loom |
| JPH02160950A (en) * | 1988-12-15 | 1990-06-20 | Nissan Motor Co Ltd | Weft retracting apparatus for loom |
| IT1248716B (en) * | 1990-06-11 | 1995-01-26 | Vamatex Spa | DEVICE FOR THE REGULATION OF THE VOLTAGE AND THE RECOVERY OF THE WEFT WIRE IN WEAVING FRAMES |
| DE59408395D1 (en) * | 1994-05-30 | 1999-07-15 | Rueti Ag Maschf | Device and method for eliminating irregularities when a weft thread is inserted into a weaving rotor of a row shed weaving machine |
| DE4438762C1 (en) * | 1994-10-29 | 1995-09-28 | Dornier Gmbh Lindauer | Weaving errors are avoided in an automatic esp. pneumatic loom |
-
2001
- 2001-07-11 JP JP2001210297A patent/JP3654350B2/en not_active Expired - Fee Related
-
2002
- 2002-06-21 EP EP02013834A patent/EP1310587A3/en not_active Withdrawn
- 2002-07-11 CN CN 02141045 patent/CN1283862C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054757B (en) * | 2007-05-15 | 2011-04-20 | 江苏万工科技集团有限公司 | Weft selector for jet loom |
| CN109415850A (en) * | 2016-07-06 | 2019-03-01 | Iro有限公司 | Form the weft yarn feed apparatus of Intermediate yarn buffer and the method for controlling weft yarn feed apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003020544A (en) | 2003-01-24 |
| EP1310587A3 (en) | 2003-09-17 |
| CN1283862C (en) | 2006-11-08 |
| EP1310587A2 (en) | 2003-05-14 |
| JP3654350B2 (en) | 2005-06-02 |
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