CN1609303B - Braking device of weft feeders for textile machines - Google Patents
Braking device of weft feeders for textile machines Download PDFInfo
- Publication number
- CN1609303B CN1609303B CN 200410087704 CN200410087704A CN1609303B CN 1609303 B CN1609303 B CN 1609303B CN 200410087704 CN200410087704 CN 200410087704 CN 200410087704 A CN200410087704 A CN 200410087704A CN 1609303 B CN1609303 B CN 1609303B
- Authority
- CN
- China
- Prior art keywords
- brake
- winding reel
- roughness
- yarn
- annular
- 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
Links
- 239000004753 textile Substances 0.000 title 1
- 238000004804 winding Methods 0.000 claims abstract description 37
- 230000009471 action Effects 0.000 claims description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 238000005498 polishing Methods 0.000 description 3
- 238000009941 weaving Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 239000002650 laminated plastic Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
Images
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
- D03D47/366—Conical
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
The present invention relates to a regulating braking device of weft feeder (10). The braking device includes a winding roll (11) for storing a weft yarn reserve (SF) and an end cutting conical shape braking member (16) for applying self-adjusting braking function on the weft yarn (F) backing-off from the winding roll (11). The winding roll (11) is disposed with a cylinder skirt part (M) and a front surface (SP) of a plane connected with each other by an annular surface (SR) of a round corner. The surface of the skirt part (M) of the winding cylinder (11) has different roughness, and has an annular braking belt (FF) having low roughness, the annular braking belt extends along the annular surface (SR) of the round corner in the area for jointing the end cutting conical shape braking member (16) and has a residual surface part of the skirt part (M) outside of the braking belt, the residual part has higher roughness.
Description
Technical field
The present invention relates generally to the yarn feeder that is used for weaving loom, and relates to the improvement of the modulating brake device that is used for described yarn feeder.
Background technology
More particularly, the yarn feeder of the type that is disclosed among No. 534253, the EP of patent formerly that the present invention relates to the applicant, this yarn feeder comprise the weft yarn deposit that stores the yarn coil form on it one fixedly winding reel with have circular section, be generally a brake component of frustoconical part.
The above-mentioned type, be that fixedly winding reel has the front surface on a cylindrical skirt and a plane in the weft yarn loom known to the those skilled in the art that, this front surface is connected to the skirt section by the annular surface of fillet.Be bearing on the elastic device in yarn feeder winding reel the place ahead the brake component concentric of frustoconical, and by described elastic device bias voltage, thereby with the annular surface that its main section engages described fillet along the tangent circumferential elasticity and the adjustable ground of winding reel, the diameter of the tangent circumference of described winding reel is slightly littler than winding reel master circumference.Yarn connects along a path that tilts between winding reel and brake component, the path of described inclination the tangent circumference of winding reel and be arranged in brake component than near the guide eyelet the away minor segment between extend.Brake component applies a self-regulating braking action when the unwinding yarn, the intensity of this braking action changes along with the mechanical tension of velocity variations and yarn; Braking action also can be regulated by means of electric device or straight line/rotation electric powerplant, and described those devices by the electric current of the modulation power supply along with the variation of yarn mechanical tension with changing.
Usually, the frustoconical brake component is made with metallic plate, fabric or with epoxy resin impregnated laminated plastic, and the roughness of its inner surface is in the scope of 0.8 to 1.2 micron, and this inner surface is the contact yarn when moving in brake component circularly.The cylindrical surface in winding reel skirt section also is processed into has this higher relatively roughness, to have better accuracy in the process that connects at unwinding yarn.In fact, because little contact point (micro-conctact point) of yarn larger amt between the winding reel surface, lower roughness causes high friction coefficient, so that have influence on the precision of yarn unfriendly, and finally have influence on the precision that unwinding yarn connects unfriendly along the shuttling movement on described surface.In contrast be that when peeling off the made yarn of fiber, the roughness on the surface of cylindrical winding reel then should be for example be reduced to value in 0.2 to 0.4 micron scope by polishing, ftractures when connecting brake apparatus to prevent yarn in processed.
Also have, high friction coefficient causes the braking action of frustoconical part to strengthen significantly between the surface of cylindrical winding reel and the yarn, thereby, for the frustoconical part than the lead aircraft tool for service life, the elastic contact pressure of described frustoconical part, promptly so-called " static pressure " may correspondingly reduce.
But, for this purpose, the whole cylindrical surface of polishing yarn feeder winding reel is inconvenient, be because this is complicated and expensive processing, also be because, as mentioned above, if when whole surface finish becomes lower roughness, the unwinding that will influence unfriendly in the situation of traditional yarn connects precision.
Summary of the invention
A main purpose of the present invention provides a kind of improved brake apparatus, and this brake apparatus is strengthened the braking action that acts on the yarn significantly, and simultaneously, can influence the precision that unwinding yarn connects sharply.
According to the present invention, described purpose realizes by a kind of modulating brake device, the characteristics of described brake apparatus are, this device has a fixing winding reel, the outer surface of its cylindrical skirt has different roughness, have an annular stop band that has than low roughness, this annular stop band annular surface along fillet on the zone that will be engaged by the frustoconical brake component extends, and having a residual surface part in the skirt section in the brake band outside, this residual surface partly has higher roughness.
According to the present invention, the higher roughness of the surface portion in the described skirt section in the brake band outside is in 0.8 to 1.2 micron scope, and the roughness of brake band is in 0.2 to 0.4 micron scope.Brake band is preferably made by the chromium coating that polishes a bed thickness, and extends symmetrically along the span with certain width on the both sides of tangent circumference of frustoconical brake component and tube.
Description of drawings
Now with reference to describing the present invention in further detail, in all accompanying drawings with the accompanying drawing shown in the mode of non-limitative example:
Fig. 1 is the side view that has according to the yarn feeder of improved brake apparatus of the present invention;
Fig. 2 is the skeleton diagram of magnification ratio of thin portion of the fixedly winding reel of brake apparatus shown in Figure 1;
Fig. 3 is the transverse sectional view along the line III-III of Fig. 2.
The specific embodiment
In Fig. 1, a yarn feeder 10 of known type comprises the winding reel 11 with cylindrical skirt M and the front surface S P on a plane, and this front surface S P is connected to the skirt section by the annular surface SR of fillet.The swing arm 12 of one hollow is attached on the rotating circular disk that is arranged in winding reel base portion place, and a plurality of yarn coils of reeling on winding reel, to form the weft yarn deposit.In a well-known manner, when loom or the requirement of other weaving loom (not shown), yarn F unwinding from the winding reel is got off, connected guide eyelet 14 with the winding reel concentric, and, when carrying out unwinding, total this yarn F is subjected to the braking action of the self-regulating brake portion that one usefulness 15 indicates, this brake portion be suitable for by the threading speed with yarn change and automatically modulating brake be used for keeping yarn to be tensioned.For this purpose, brake portion 15 comprises the brake component 16 of a frustoconical, and this brake component is made with metallic plate, man-made fabric or with the laminated plastic of polymer resin dipping, and is arranged in winding reel 11 the place aheads.The frustoconical part is tangent along tangent circumference and the winding reel of the diameter fillet annular surface SR slightly littler than the full diameter of winding reel.By means of a ring-shaped bearing piece 17 and a flexible suspension (not shown), frustoconical part 16 is biased on the winding reel 11, thereby with a predetermined elasticity power, the yarn that is so-called quiet tensioner brake unwinding is got off from the winding reel.Supporting member 17 is loaded on the sliding part 18, and these sliding part 18 relative winding reels 11 are axially moveable, and can be by a spiro driving device 19 operations to regulate quiet tension force.
According to the present invention, fixedly the outer surface of the cylindrical skirt M of winding reel 11 has different roughness, and have an annular stop band FF, this brake band FF has the roughness of reduction and extends along the annular surface SR of fillet, also have the residual surface part in the brake band outside, this part has higher roughness.
Be easily, the higher roughness of the described surface portion of the skirt section M in the brake band FF outside is in 0.8 to 1.2 micron scope, and the roughness of brake band FF is in 0.2 to 0.4 micron scope.
Brake band is preferably made with the chromium coating of polishing one bed thickness, and have a predetermined width H, for example in 3 to 7 millimeters scope, and on the both sides of the tangent circumference of yarn feeder winding reel, extend symmetrically along the span H/2 that equates.
This paper has described a preferred embodiment of the present invention, but it is evident that, those skilled in the art that also can make many changes according to applied environment within the scope of notion of the present invention.
Claims (4)
1. modulating brake device that is used for yarn feeder (10), described brake apparatus comprises the brake component (16) that is used to store a winding reel (11) of a weft yarn deposit (SF) and applies a frustoconical of self-regulating braking action at the yarn (F) that gets off from the last unwinding of winding reel (11), and described winding reel (11) is provided with by annular surface (SR) cylindrical skirt connected to one another (M) of a fillet and the front surface (SP) on a plane, it is characterized in that, the surface in the skirt section (M) of winding reel (11) has different roughness, and have an annular stop band (FF) that has than low roughness, this annular stop band annular surface (SR) along described fillet in the zone that will be engaged by frustoconical brake component (16) extends, and having a residual surface part in the skirt section (M) in the brake band outside, this residual surface partly has higher roughness.
2. device as claimed in claim 1 is characterized in that, the described higher roughness of the surface portion in the skirt section (M) in brake band (FF) outside is in 0.8 to 1.2 micron scope, and the roughness of brake band (FF) is in 0.2 to 0.4 micron scope.
3. device as claimed in claim 1 or 2, it is characterized in that, brake band (FF) is made by the chromium coating that polishes a bed thickness, have a predetermined width (H), and on the both sides of frustoconical brake component (16) and the tangent circumference of the winding reel (11) of yarn feeder, extend symmetrically along the span that equates (H/2).
4. device as claimed in claim 3 is characterized in that, described predetermined width (H) is in 3 to 7 millimeters scope.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITTO20030833 ITTO20030833A1 (en) | 2003-10-23 | 2003-10-23 | IMPROVEMENT OF MODULATED BRAKING DEVICES FOR TEXTILE FEEDERS WITH TEXTILE MACHINES. |
| ITT02003A000833 | 2003-10-23 | ||
| ITTO2003A000833 | 2003-10-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1609303A CN1609303A (en) | 2005-04-27 |
| CN1609303B true CN1609303B (en) | 2010-09-01 |
Family
ID=34385842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410087704 Expired - Fee Related CN1609303B (en) | 2003-10-23 | 2004-10-25 | Braking device of weft feeders for textile machines |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1526102B1 (en) |
| CN (1) | CN1609303B (en) |
| DE (1) | DE602004011444T2 (en) |
| IT (1) | ITTO20030833A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITTO20040105U1 (en) * | 2004-08-05 | 2004-11-05 | Lgl Electronics Spa | WEFT FEEDER FOR WEAVING FRAMES EQUIPPED WITH SELF-REGULATING BRAKING DEVICE |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5553641A (en) * | 1994-10-10 | 1996-09-10 | L.G.L. Electronics S.P.A. | Positive modulated braking of the thread for weft feeders |
| EP0652312B1 (en) * | 1993-11-05 | 1998-09-23 | L.G.L. ELECTRONICS S.p.A. | Device for the positive modulated braking of thread for weft feeders |
| EP0765835B1 (en) * | 1995-09-28 | 1999-05-26 | L.G.L. ELECTRONICS S.p.A. | Weft feeder for textile machines, with wearproof means for protecting the weft reserve monitoring device |
| US6269843B1 (en) * | 1997-10-15 | 2001-08-07 | Nuova Roj Electrotex S.R.L. | Radial and flexible annular storage drum brake |
| US6322016B1 (en) * | 1997-02-24 | 2001-11-27 | Iro Ab | Thread delivery device and thread brake |
| EP0884263B1 (en) * | 1997-06-11 | 2002-04-03 | L.G.L. Electronics S.p.A. | Self-adjusted modulated thread braking devices for a weft feeder |
| CN1358891A (en) * | 2000-12-01 | 2002-07-17 | 爱吉尔电子股份公司 | Improved brake unit for self-adjusting yarn brake device and making method thereof |
| CN1375586A (en) * | 2001-03-20 | 2002-10-23 | 爱吉尔电子股份公司 | Self-regulating brake apparatus for weft-feeding device |
-
2003
- 2003-10-23 IT ITTO20030833 patent/ITTO20030833A1/en unknown
-
2004
- 2004-09-20 DE DE200460011444 patent/DE602004011444T2/en not_active Expired - Lifetime
- 2004-09-20 EP EP20040022315 patent/EP1526102B1/en not_active Expired - Lifetime
- 2004-10-25 CN CN 200410087704 patent/CN1609303B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0652312B1 (en) * | 1993-11-05 | 1998-09-23 | L.G.L. ELECTRONICS S.p.A. | Device for the positive modulated braking of thread for weft feeders |
| US5553641A (en) * | 1994-10-10 | 1996-09-10 | L.G.L. Electronics S.P.A. | Positive modulated braking of the thread for weft feeders |
| EP0765835B1 (en) * | 1995-09-28 | 1999-05-26 | L.G.L. ELECTRONICS S.p.A. | Weft feeder for textile machines, with wearproof means for protecting the weft reserve monitoring device |
| US6322016B1 (en) * | 1997-02-24 | 2001-11-27 | Iro Ab | Thread delivery device and thread brake |
| EP0884263B1 (en) * | 1997-06-11 | 2002-04-03 | L.G.L. Electronics S.p.A. | Self-adjusted modulated thread braking devices for a weft feeder |
| US6269843B1 (en) * | 1997-10-15 | 2001-08-07 | Nuova Roj Electrotex S.R.L. | Radial and flexible annular storage drum brake |
| CN1358891A (en) * | 2000-12-01 | 2002-07-17 | 爱吉尔电子股份公司 | Improved brake unit for self-adjusting yarn brake device and making method thereof |
| CN1375586A (en) * | 2001-03-20 | 2002-10-23 | 爱吉尔电子股份公司 | Self-regulating brake apparatus for weft-feeding device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE602004011444D1 (en) | 2008-03-13 |
| EP1526102B1 (en) | 2008-01-23 |
| CN1609303A (en) | 2005-04-27 |
| ITTO20030833A1 (en) | 2005-04-24 |
| DE602004011444T2 (en) | 2009-01-15 |
| EP1526102A1 (en) | 2005-04-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100901 |