CN104947296B - Thread brake for yarn feeder - Google Patents
Thread brake for yarn feeder Download PDFInfo
- Publication number
- CN104947296B CN104947296B CN201510063700.XA CN201510063700A CN104947296B CN 104947296 B CN104947296 B CN 104947296B CN 201510063700 A CN201510063700 A CN 201510063700A CN 104947296 B CN104947296 B CN 104947296B
- Authority
- CN
- China
- Prior art keywords
- yarn
- keep plate
- thread brake
- motor
- drum
- 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
- D03D47/36—Measuring and cutting the weft
- D03D47/361—Drum-type weft feeding devices
- D03D47/364—Yarn braking means acting on the drum
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/38—Devices for supplying, feeding, or guiding threads to needles
- D04B15/48—Thread-feeding devices
- D04B15/482—Thread-feeding devices comprising a rotatable or stationary intermediate storage drum from which the thread is axially and intermittently pulled off; Devices which can be switched between positive feed and intermittent feed
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
First keep plate (32) is suitable to the delivery end for being coaxially fixed to drum (12).Second keep plate (40) is coaxially biased against the first keep plate (32) by elastic device (48), and elastic device (48) is operably engaged between the second keep plate (40) and supporter (50).Yarn (Y) is advanced between keep plate (36,44), thus receives the braking action yarn (Y) for passing through the friction preloaded according to elastic device.Supporter (50,150) is via for being operably coupled to motor (54,154) along such as changing the translation motion conversion equipment (58a, 64a, 150a, 151) that rotates to moved in the direction preloaded.Motor (54,154) signal as caused by control unit (CU, CU') based on the tension sensor (70,170) as being interacted with the yarn untied from feeder drives, and control unit (CU, CU') is programmed for adjusting in a manner of the tension force of yarn (Y) substantially is maintained constant at into aspiration level and preloaded.
Description
Technical field
The present invention relates to a kind of thread brake for yarn feeder.
Background technology
It is well known that the yarn feeder for Weaving device generally includes to rouse, motorized flywheel will be formed and stored up
Multiple yarn rings of standby thing are wrapped on drum.The yarn extracted out from the spool of yarn feeder upstream is in downstream machine (for example, for example
Loom) request under untied from drum, and pass through brake unit, brake unit includes one or more suitable for tieing up under tension
Hold the weft brake for the yarn untied.
WO91/14032 discloses a kind of weft brake, wherein from the yarn untied is roused in two opposed annular slabs
Between radially advance, two opposed annular slabs are coaxially disposed in before bulging, and mutually against biasing, for leading to
Cross friction catch yarn.The plate of drum side be it is fixed, and relative plate against fixed plate by spring or with adjusting application
In the electromagnetic actuators biasing that the mode of the braking action of yarn controls.
Equally in WO02/22483, the yarn untied also is being coaxially disposed in the two opposed annular slabs of drum above
Between radially advance.The plate of drum side is made up of magnetic material, and attends class in pin and axially slide.Relative plate is motionless
, and the electromagnet with arrangement behind, electromagnet can be actuated to attract moveable plate against fixed plate, thus
Braking action is applied on yarn, braking action depends on the electric current across electromagnet.
Two above scheme all have they need not frequently cleaning the advantages of because between brake area due to
Thread friction and caused dust and paraffin are blown off by the spinning movement for the yarn untied from drum.
However, these schemes all have as a drawback that, i.e., for some applications, they do not allow over time based on
Need to adjust the mean tension of yarn, defect is not present on the quality of finished article and finished article to protect.For example, work as
When the spool of yarn feeder upstream exhausts, yarn tension is also easy to produce.In this case, its braking of brake apparatus adjust automatically
Effect would is that it is desired, so as to compensate it is this change and maintain to be fed for tension force constant.
In addition, in order to produce required brake force, it is necessary to supply all the time with its high current consumes and it is famous Electromagnetically actuated
Device, therefore there is high energy, it is typically provided with particularly in view of conventional textile/braiding apparatus and serves single downstream machine
The fact that tens yarn feeders.
Other known brake apparatus is provided with the hollow truncated cone braking being resiliently biased against the delivery end of drum
Component.These are that such tension adjustment that is fed for also allowed based on yarn builds the actuating power applied by truncated cone
Known applications.As disclosed in for example in EP0707102, due to the high inertia of truncated cone braking element and deformation
Property, these schemes are unsuitable for some applications.
The content of the invention
It is therefore an object of the present invention to a kind of weft brake for yarn feeder, the weft brake is permitted
Perhaps the mean tension of yarn is adjusted over time, and is not subjected to the disadvantages mentioned above of known system, especially with regard to Electromagnetic Control
The power consumption of system and the system mechanics limitation on using hollow truncated cone braking element.
In order to realize foregoing invention purpose, the invention provides a kind of Yarn braking for being used to be arranged on yarn feeder
Device, the yarn feeder are provided with drum, and the drum has the multiple yarn rings being wrapped in thereon, and the yarn ring is suitable in downstream machine
Untied under the request of device, the thread brake includes：
- the first keep plate, first keep plate are suitable to the delivery end for being coaxially fixed to the drum, and
- the second keep plate, second keep plate are coaxially biased against first keep plate by spring, the spring
It is operably engaged between second keep plate and supporter,
The yarn is suitable to advance between first keep plate and second keep plate, will pass through according to
The friction preloaded of spring receives braking action,
Its feature is that the supporter is operably coupled to motor via translation motion conversion equipment is rotated to, institute
State and rotate to translation motion conversion equipment and moved along for changing the direction preloaded, the motor is single by control
Member is driven based on signal caused by the tension sensor as being interacted with the yarn untied from the feeder, and the control is single
Metaprogramming is that described preload is adjusted in a manner of the tension force of the yarn is maintained constant at into aspiration level.
It is preferred that in the said apparatus of the present invention, second keep plate is protruded by tubulose and is directed to axially slide
Dynamic, the tubulose protrusion extends coaxially into from its inner edge, and is sliding engaged the pilot sleeve with the drum one.
It is preferred that in the said apparatus of the present invention, the spring includes the spring around the pilot sleeve.
It is preferred that in the said apparatus of the present invention, the supporter includes sliding part, and the sliding part is led around described
To sleeve, and, the guider is spaced apart and parallel with the pilot sleeve on guider slidably.
It is preferred that in the said apparatus of the present invention, the motor and the translation motion conversion equipment that rotates to integrate
In linear electric actuator, the linear electrical actuator is provided with the drive rod for anchoring to the supporter.
It is preferred that in the said apparatus of the present invention, the linear electrical actuator is linear step actuator.
It is preferred that in the said apparatus of the present invention, the supporter includes annular revolving meber, and the annular revolving meber is slided
Be coupled to the pilot sleeve dynamicly, and the translation motion conversion equipment that rotates to includes rack rails, the rack rails with it is described
Revolving meber one, and the worm screw of the drive shaft with being keyed onto the motor is operably engaged.
It is preferred that in the said apparatus of the present invention, the motor is stepper motor.
Brief description of the drawings
It will implement now with reference to some the preferable non-exclusives shown in the accompanying drawings in a manner of unrestricted shape example
The present invention is more fully described in example, wherein：
Fig. 1 is to show to have the yarn of the weft brake mounted thereto according to the first embodiment of the present invention to present
Send the view of the axial cross section of the end of device；
Fig. 2 shows the details of Fig. 1 amplification；
Fig. 3 is the three-dimensional cutaway view of a part for weft brake shown in Fig. 1；
Fig. 4 is the view of the axial cross section of the part of weft brake shown in Fig. 3；
Fig. 5 is analogous to the view that Fig. 1 shows the alternate embodiment of the present invention.
Fig. 6 is the view of the axial cross section of weft brake shown in Fig. 5；
Fig. 7 is the three-dimensional cutaway view of a part for weft brake shown in Fig. 6；
Fig. 8 is the stereogram of the part of weft brake shown in Fig. 7.
Embodiment
Fig. 1 shows the end of yarn feeder.Yarn feeder 10 includes drum 12, and drum 12, which is suitable to have, to be wrapped in thereon
Multiple yarn rings to form reserve.Yarns Y solves under the request of downstream machine (for example, loom (not shown)) from drum 12
Open, and by being supported on from the brake unit 14 on the arm 16 of the main body (not shown) protrusion of feeder.Brake unit 14 includes
The passive type weft brake 18 and active weft brake 20 of general type, so as to which tension force is substantially constant in the phase
Hope horizontal, passive type weft brake 18 is suitable to static brake effect being applied to untiing at the conveying side 12a of drum 12
On yarn, active weft brake 20 is suitable to adjusted braking action being applied under passive type weft brake 18
On the yarn of trip.
In a way known, passive type weft brake 18 includes frustoconical 22, truncated cone
Component 22 is biased against the conveying side 12a of drum 12 using its inner surface.Frustoconical 22 outside it place by ring-shaped article
24 coaxially support, and ring-shaped article 24 is coaxially fixed to edge 26.Edge 26 is with the control to the screw mechanism 28 in arm 16 is incorporated to
The mode axially moved under system is supported by arm 16.Screw mechanism 28 can be operated manually via knob 30, for adjust by
Frustoconical 22 is pressed against the pressure that drum 12 applies, and therefore static brake acts through friction and is applied to yarn.
Referring in particular to Fig. 2, active weft brake 20 includes a pair of opposed keep plates with circular section, should
Keep plate is co-axially supported at before the delivery end of drum 12.First keep plate 32 is arranged in cylindrical support member 34, circle
Cylinder support 34 is provided with flange end 34a, and cylindrical support member 34 is coaxially fixed to the conveying of drum 12 via flange end 34a
End.The opposite end of cylindrical support member 34 has hemispherical seat 36, wherein receiving the hemisphere with cooperation of the first keep plate 32
The core of shape section.Core is axially sandwiched between hemispherical seat 36 and the locking member 38 of negative shape, locking
Component 38 is axially screwed into the end of cylindrical support member 34.Thus providing allows the first keep plate 32 to surround the axle positioned at drum 12
The spherical coupling of spot wobble on line.The outside 34b of first keep plate 32 is bent towards drum 12.Flat annular section 34c is limited
Between core and outside 34b.
Second keep plate 40 is coaxially disposed in before the first keep plate 32.Second keep plate 40 has to be bent away from drum
Inner edge 40a and outside 40b and limit flat annular section 40c between them, annular section 40c is towards the first system
The annular section 34c of dynamic plate 32.Tubulose protrudes 40d and coaxially protruded from the inner edge 40a of the second keep plate, and is slidably inserted into
In pilot sleeve 42, pilot sleeve 42 is fixed to arm 16 (Fig. 1) via support member 44.Remote second keep plate of pilot sleeve 42
40 towards end be flanged in 42a, for anchoring to support member 44, and with the yarn guide hole being inserted
Eye 46.
Second keep plate 40 is resiliently biased against the first keep plate 32 by spring 48.Spring 48 is bonded on the second braking
Between plate 40 and supporter, in this embodiment, the supporter by parallel to pilot sleeve 42 guider (such as
Pin) slide on 52 and the sliding part 50 fixed to support member 44 forms.Sliding part 50 can move under the control of motor 54.Horse
Support member 44 is fixed to via distance piece 56 up to 54, and is provided with stem 58, stem 58 has is fixed to sliding part 50 by nut 60
The end of thread.
Fig. 4 is the schematic diagram of the axial cross section of motor 54.Motor 54 includes shell 61, and shell 61, which has, to be accommodated wherein
Annular stator 62.Hollow rotor 64 in insertion stator 62 is supported by shell 61 via two bearings 66,68.Stem 58 receives
In hollow rotor 64, and at 58a through.Hollow rotor 64 internally passes through at 64a, and is threadedly engaged with stem 58.
Therefore, the spinning movement of hollow rotor 64 is converted to the horizontal movement of stem 58.
Motor 54 drives (Fig. 1) by control unit CU, and control unit CU is programmed for producing letter according to by tension sensor 70
Number by yarn tension is substantially maintained constant at it is desired it is horizontal in a manner of adjust by active weft brake 20 when
Between braking action, tension sensor 70 is arranged in the downstream of weft feeder 10, for measuring for the yarn untied from drum
Power.
In operation, feeder 10 extracts yarn out from spool (not shown), and for example winds turning arm by weft yarn and (do not show
Go out) it is wrapped in the form of a ring on drum 12 in a per se conventional manner.The yarn untied under the request of loom from drum 12
Line first passes around the passive type weft brake 18 being applied to static brake effect on yarn, then by active weft yarn
Brake apparatus 20.In the example of application, when the spool of feeder upstream exhausts, yarn tension is easy to produce.Control unit
CU detects the increase of tension force by tension sensor 70, and with adjusting and (in this case, be incrementally decreased) spring
48 mode preloaded changes the position of the sliding part 50 acted on via spring 48 on the second keep plate 40, and therefore makes
Action thereby compensates for tension variation with applied to the yarn advanced between the plates.
Fig. 5-8 shows the alternate embodiment of the present invention, spring pre-add of the embodiment in active yarn brake 120
Embodiment before being different from terms of mounted mechanism.In this embodiment, the supporter being made up of annular revolving meber 150 is slidably matched somebody with somebody
Pilot sleeve 142 is closed, and is acted on spring 148.A part for the outer surface of revolving meber 150 is rack rails shape in 150a
, and the worm screw 151 of the axle with being keyed onto motor 154 engages.Motor 154 is fixed to support member via connector 156
144, connector 156 from pilot sleeve 142 away from second keep plate 140 towards end integratedly extend.Total is sealed
In housing 159.Revolving meber 150 prevents to rotate relative to pilot sleeve 142 by the pin 157 with the one of revolving meber 150,
And slidably engage the slit 159a to be formed in housing 159.
Motor 154 is driven by the control unit CU' for being connected to tension sensor 170 in a manner of similar to embodiment before
It is dynamic.
Some currently preferred embodiments of the present invention, but people in the art within the scope of the claims have been described herein
Member can certainly carry out many changes.For example, instead of linear step actuator or stepper motor, brushless drivetrain can be used
System.
Claims (8)
1. one kind is used to be arranged on yarn feeder（10）On thread brake, the yarn feeder（10）Provided with drum
（12）, the drum（12）With the multiple yarn rings being wrapped in thereon, the yarn ring is suitable to untie under the request of downstream machine, institute
Stating thread brake includes：
- the first keep plate（32）, first keep plate（32）Suitable for being coaxially fixed to the drum（12）Delivery end, and
- the second keep plate（40）, second keep plate（40）Against first keep plate（32）By spring（48）Coaxially
Biasing, the spring（48）It is operably engaged in second keep plate（40）Between supporter,
The yarn（Y）Suitable in first keep plate（32）With second keep plate（40）Between advance, will pass through
Braking action is received according to the friction preloaded of the spring,
Characterized in that, the supporter is operably coupled to motor via translation motion conversion equipment is rotated to（54、
154）, the translation motion conversion equipment that rotates to moves along for changing the direction preloaded, the motor
（54、154）By control unit（CU、CU'）Based on the tension sensor by being interacted with the yarn untied from the feeder
（70、170）Caused signal driving, described control unit（CU、CU'）It is programmed for to by the yarn（Y）Tension force dimension
Hold the constant mode in aspiration level and adjust described preload.
2. thread brake according to claim 1, it is characterised in that second keep plate（40、140）Pass through pipe
Shape protrudes（40d）It is directed to axially slide, the tubulose protrudes（40d）From its inner edge（40a）Extend coaxially into, and slidably
Engagement and the pilot sleeve of the drum one（42、142）.
3. thread brake according to claim 2, it is characterised in that the spring includes surrounding the pilot sleeve
（42、142）Spring（48、148）.
4. the thread brake according to Claims 2 or 3, it is characterised in that the supporter includes sliding part（50）,
The sliding part（50）Around the pilot sleeve（42、142）, and in guider（52）On slidably, it is described be oriented to dress
Put（52）With the pilot sleeve（42）It is spaced apart and parallel.
5. thread brake according to claim 4, it is characterised in that the motor（54）Translation is rotated to described
Action-changing device（58a、64a）It is integrated in linear electrical actuator, the linear electrical actuator is described provided with anchoring to
The drive rod of supporter.
6. thread brake according to claim 5, it is characterised in that the linear electrical actuator is linear stepping
Actuator.
7. the thread brake according to Claims 2 or 3, it is characterised in that the supporter includes annular revolving meber
（150）, the annular revolving meber（150）It is slidably fitted into the pilot sleeve（142）, and characterized in that, the rotation
Going to translation motion conversion equipment includes rack rails（150a）, the rack rails（150a）It is integral with the revolving meber, and with being consolidated with key
Surely the motor is arrived（154）Drive shaft worm screw（151）It is operably engaged.
8. thread brake according to claim 7, it is characterised in that the motor（154）It is stepper motor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITTO20140266 | 2014-03-28 | ||
| ITTO2014A000266 | 2014-03-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104947296A CN104947296A (en) | 2015-09-30 |
| CN104947296B true CN104947296B (en) | 2018-02-16 |
Family
ID=50693906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510063700.XA Active CN104947296B (en) | 2014-03-28 | 2015-02-06 | Thread brake for yarn feeder |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2924156B1 (en) |
| CN (1) | CN104947296B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017027257A1 (en) * | 2015-08-11 | 2017-02-16 | American Linc, Llc | Adjustable yarn tensioner, textile machine, and method for tensioning a continuously running yarn |
| CN108138396B (en) * | 2015-11-09 | 2020-03-20 | 丰田工业株式会社 | Arrangement of devices for feeding weft yarns |
| WO2017105315A1 (en) * | 2015-12-16 | 2017-06-22 | Iro Aktiebolag | Yarn feeder with motor assembly for yarn tension regulation |
| DE102016117506B3 (en) * | 2016-09-16 | 2017-11-23 | Memminger-Iro Gmbh | Yarn feeder |
| BE1025536B1 (en) * | 2017-09-07 | 2019-04-08 | Picanol N.V. | Thread brake device for a weft feed device |
| DE102018115604A1 (en) * | 2018-06-28 | 2020-01-02 | Memminger-Iro Gmbh | Yarn feeder |
| CN112243973B (en) * | 2020-09-10 | 2022-09-20 | 马鞍山市四季果业有限公司 | Environment-friendly deinsectization device for strawberry planting |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0519970A1 (en) * | 1990-03-12 | 1992-12-30 | Iro Ab | Output yarn brake |
| CN1135777A (en) * | 1993-10-29 | 1996-11-13 | 享里胥·法伯西兹 | Yarn feeding device for textile machines |
| US6095449A (en) * | 1995-09-20 | 2000-08-01 | Iro Ab | Device and method to control yarn tension and yarn feeder |
| CN1302925A (en) * | 1999-11-30 | 2001-07-11 | 爱吉尔电子股份公司 | Method of controlling electric weft brake capable of regulating weft machine tension and device |
| CN1399022A (en) * | 2001-07-25 | 2003-02-26 | 爱吉尔电子股份公司 | Control method and system for weft braking mechanism capable of regulating mechanical tension of yarn in loom automatically |
| CN101160253A (en) * | 2005-03-15 | 2008-04-09 | Iro有限公司 | Yarn processing system and controlled yarn tension device |
| CN101343002A (en) * | 2007-07-13 | 2009-01-14 | 爱吉尔电子股份公司 | Weft feeder for textile machines with a weft-braking device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1268111B1 (en) | 1994-10-10 | 1997-02-20 | Lgl Electronics Spa | POSITIVE MODULATED YARN BRAKING DEVICE, FOR WEFT FEEDING DEVICES |
| DE10045420A1 (en) | 2000-09-14 | 2002-03-28 | Iro Patent Ag Baar | Disc brake |
-
2015
- 2015-01-14 EP EP15000072.7A patent/EP2924156B1/en active Active
- 2015-02-06 CN CN201510063700.XA patent/CN104947296B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0519970A1 (en) * | 1990-03-12 | 1992-12-30 | Iro Ab | Output yarn brake |
| CN1135777A (en) * | 1993-10-29 | 1996-11-13 | 享里胥·法伯西兹 | Yarn feeding device for textile machines |
| US6095449A (en) * | 1995-09-20 | 2000-08-01 | Iro Ab | Device and method to control yarn tension and yarn feeder |
| CN1302925A (en) * | 1999-11-30 | 2001-07-11 | 爱吉尔电子股份公司 | Method of controlling electric weft brake capable of regulating weft machine tension and device |
| CN1399022A (en) * | 2001-07-25 | 2003-02-26 | 爱吉尔电子股份公司 | Control method and system for weft braking mechanism capable of regulating mechanical tension of yarn in loom automatically |
| CN101160253A (en) * | 2005-03-15 | 2008-04-09 | Iro有限公司 | Yarn processing system and controlled yarn tension device |
| CN101343002A (en) * | 2007-07-13 | 2009-01-14 | 爱吉尔电子股份公司 | Weft feeder for textile machines with a weft-braking device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104947296A (en) | 2015-09-30 |
| EP2924156B1 (en) | 2016-11-23 |
| EP2924156A1 (en) | 2015-09-30 |
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