EP1802544A1 - Thread tensioning boby - Google Patents
Thread tensioning bobyInfo
- Publication number
- EP1802544A1 EP1802544A1 EP05790077A EP05790077A EP1802544A1 EP 1802544 A1 EP1802544 A1 EP 1802544A1 EP 05790077 A EP05790077 A EP 05790077A EP 05790077 A EP05790077 A EP 05790077A EP 1802544 A1 EP1802544 A1 EP 1802544A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- brake body
- yarn
- yarn brake
- body according
- threads
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- D04B15/484—Yarn braking means acting on the drum
-
- 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
Definitions
- the invention relates to a yarn brake body specified in the preamble of patent claim 1. Art.
- the thread brake body known from EP 1 243 542 A has a truncated cone made of elastic steel, thermoplastic polymer material, thermosetting polymer material, technical polymer reinforced with carbon fibers, carbon fiber or glass fiber fabrics.
- a slot row is formed along the circumferential region defining the braking zone, wherein the slots are inclined relative to the generatrix and separated from one another by spokes. Between the peripheral region and the small-diameter end, weight-reducing cutouts of different shapes are provided.
- the slot- and break-free areas of the truncated cone shell have dense and continuous surfaces. Such Fa ⁇ den-brake body can be useful for sensitive yarn qualities and / or low Brems ⁇ force values.
- the yarn brake body is aligned in the yarn braking device of a yarn feeding device with a stationary, approximately cylindrical storage body with the truncated cone axis on the storage body axis and slid with the large diameter end over the rounded, free discharge end of the storage body and axially nach ⁇ giebig pressed so that the braking zone Abzugsende contacted.
- the invention has for its object to provide a yarn brake body of the type mentioned, which is simple and inexpensive to manufacture and lightweight and very flexible, so that it is particularly useful for sensitive yarn qualities and / or low yarn braking force values, if necessary even on yarn feeding devices can be used for knitting machines.
- the wall region which defines the braking zone at least in the brake zone, flexible screen or grid material not only provides the required, at least radial, elasticity. Even with sensitive thread qualities and weak contact pressures, son ⁇ also results in a lightweight, inexpensive in mass production herstellba ⁇ Ren thread brake body.
- the thread is treated very scho ⁇ nend on the sieve or grid structure, since there are no sharp wheels and no angular transitions, but a relatively uniform corrugated profile.
- the screen or grid material is not only radially elastic, but in all directions cuddly, which ensures a very gentle treatment of the thread.
- the yarn brake body is even formed entirely from the screen or grid material. This simplifies the production, leads to a low-mass yarn brake body with uniform Ververungsver ⁇ hold, and allows a sensitive adjustment or change in the respective braking effect.
- the screen or grid material is a fabric of weft and warp threads. This results in a uniform and regular wave profile in all directions with the screen or grid passages lying between them.
- the sieve or grid passages can have regular geometric configurations.
- the fabric consists of plastic and / or metal and / or plastic / metal composite threads. These threads have favorable strength properties even with the lowest thread strength.
- the screen or grid material has a coating, at least in the braking zone, and preferably a coating based on plastic and / or metal and / or ceramic.
- the purpose of the coating is to increase at least the wear resistance and / or to adjust the electrostatic charging behavior and / or to optimize the resistance against meteorological and / or physical and / or chemical influences adjust.
- Metallization would be a method of applying the coating, or plasma spraying, or the like.
- the screen or grid material should meet certain specifications that are selected in view of a predetermined yarn braking behavior of the yarn brake body.
- specifications could include but are not limited to: mesh size, open screen area, basis weight, thickness, air permeability, specific weight, moisture absorption, softening point, melting point, strength, dry or wet elongation at break, sunlight and weathering resistance, acid resistance, reaction behavior to solvents or yarn impregnation agents, and the like.
- a suitable screen or grid material is a metallized fabric made of polytes terfäden with a mesh size of about 120 microns, an open screen area of about 52%, a thread count of about 59 per centimeter, a thread diameter of about 48 microns, a basis weight of about 34 gm 2 , a thickness of about 80 microns and an air permeability of about 7950 l / m 2 s at a pressure of about 20 mm of WS.
- This screen and grid material is commercially available and available, for example, from Saati Tech SpA, IT.
- the thread brake body is formed from a flat strip cut of the screen or grid material with a butt seam running in the direction of or obliquely to the generatrix between the ends.
- the sieve or grid material anyway has a natural unevenness or grip, the butt seam for the braking behavior plays no negative role.
- the butt seam is conveniently glued or welded.
- the thread brake body could also be formed from a flat one-piece circular ring blank of the screen or grid material by deep drawing, preferably at elevated temperature. In this case, there is no need for a butt weld.
- Reference to the drawing, an embodiment of the subject invention er ⁇ is explained. Show it:
- Fig. 1 is a perspective view of a yarn brake body
- Fig. 2 is a side view of the yarn braking body.
- a yarn braking body B shown in FIGS. 1 and 2 is designed as a regular cone truncated casing K with an axis X, a small diameter circular end 2.
- the generatrix 3 of the truncated cone M is a straight line.
- the inner wall 4 of the truncated cone casing K forms a braking zone Z at least in a circumferentially continuous wall region 5.
- the truncated cone casing K is formed either from a flat, strip cut with a butt weld 6a or 6b, which can be glued or welded, and either in the direction of the generatrix 3 or obliquely to this.
- the thread brake body could also be formed from a segmented ring by deep drawing, under the influence of heat, and then has no butt weld.
- the yarn brake body B consists at least in the wall region 5 of a largely uniform screen or mesh material M. It is expedient, as in the embodiment shown, even the entire truncated cone casing K to be produced from the mesh or mesh material M.
- the screen or grid material M is characterized by a multiplicity of essentially identical apertures or pores.
- a coating C is provided which contains plastic and / or metal and / or ceramic.
- the screen or grid material M is expediently a regular fabric with weft and warp threads of plastic and / or metal and / or plastic / metal composite threads. It would even be a fabric made of carbon fibers possible.
- the coating should increase the wear resistance of the yarn brake body, or a certain electrostatic charging behavior or the resistance to mete- orological and / or physical and / or chemical influences, as required in each case.
- the screen or grid material M is selected with regard to a predetermined yarn braking behavior and a very pliable yarn brake body B with specific specifications.
- specifications include, for example, the mesh size, the open screen area, the number of threads per unit length, the thread strengths, the basis weight, the thickness, the air permeability, and other parameters.
- a holding or supporting ring could be molded or molded.
- a slightly spherical contour could be formed around the small-diameter end 1 in order to be able to self-center the yarn brake body in a kind of ball joint.
- a particularly useful screen or grid material is a commercially available fabric made of polyester filaments, which may be metallized, with a mesh size of about 120 ⁇ m, an open screen area of about 52%, a thread count of about 59 per centimeter, a thread diameter of about 48 microns, a basis weight of about 34 g / m 2 , a thickness of about 80 microns, and an air permeability of about 7950 l / m 2 s at a pressure of about 20 mm of WS.
- This screen or grid material shows good sunlight and weathering resistance, very good abrasion resistance, relatively good resistance to acids, and hardly reacts to organic solvents, such as those used in cleaning.
- the specific gravity of this screen or grid material is about 1.38 Kp / dm 3 , has a moisture absorption at 2O 0 C - 65% RH. from about 0.3 to 0.4%, has a softening point of about 220 to 240 0 C, a melting point of about 250 to 260 0 C, a strength of about 4 to 5 g / den, and an elongation at break dry or moist about 15 to 30%.
- drum-shaped storage body of the yarn brake body is aligned with the cone axis X approximately on the storage body axis, with the large diameter end 2 on the pulled free, rounded outlet end of the storage body, and pressed resiliently in the axial direction.
- the braking zone Z contacted circumferentially the withdrawal end of the storage body.
- the axial contact pressure is adjustable.
- the flexible yarn brake body B deforms slightly in the radial direction and with a curl running around the yarn withdrawal point.
- the thread brake body B is supported either at the small diameter or the large diameter end.
- Such yarn brake bodies are expediently used on body knitting machines which process, if required, delicate thread qualities which produce large product volumes almost continuously, eg bodies, bodystockings or swimsuits and the like.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410051372 DE102004051372A1 (en) | 2004-10-21 | 2004-10-21 | Thread brake body |
PCT/EP2005/010734 WO2006045410A1 (en) | 2004-10-21 | 2005-10-05 | Thread tensioning body |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1802544A1 true EP1802544A1 (en) | 2007-07-04 |
Family
ID=35464207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05790077A Withdrawn EP1802544A1 (en) | 2004-10-21 | 2005-10-05 | Thread tensioning boby |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1802544A1 (en) |
CN (1) | CN101044076A (en) |
DE (1) | DE102004051372A1 (en) |
WO (1) | WO2006045410A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2213776B1 (en) | 2009-02-03 | 2014-07-23 | Iro Ab | Braking body and yarn feeder |
DE102013113115B4 (en) | 2013-11-27 | 2016-01-28 | Memminger-Iro Gmbh | Method for controlling the yarn delivery, yarn feeding device and system with yarn feeding devices |
DE102013113122B4 (en) | 2013-11-27 | 2016-03-03 | Memminger-Iro Gmbh | Yarn feeder |
DE102014118743B4 (en) | 2014-12-16 | 2023-12-21 | Memminger-Iro Gmbh | Method for controlling the thread delivery of a thread delivery device and thread delivery device |
DE102015118027B3 (en) | 2015-10-22 | 2016-11-17 | Memminger-Iro Gmbh | Method for controlling the thread delivery of a yarn feeding device and yarn feeding device |
DE102015120264B3 (en) | 2015-11-23 | 2016-12-29 | Memminger-Iro Gmbh | Method for controlling the yarn delivery of at least one yarn feeding device and textile machine with a system having at least one yarn feeding device |
DE102016117506B3 (en) * | 2016-09-16 | 2017-11-23 | Memminger-Iro Gmbh | Yarn feeder |
DE102017128327B3 (en) | 2017-11-29 | 2019-01-10 | Memminger-Iro Gmbh | Method for controlling the supply of threads of a system with several yarn feeding devices and textile machine with a system with several yarn feeding devices |
DE102018115604A1 (en) * | 2018-06-28 | 2020-01-02 | Memminger-Iro Gmbh | Yarn feeder |
DE102018115597A1 (en) | 2018-06-28 | 2020-01-02 | Memminger-IRO Gesellschaft mit beschränkter Haftung | Thread delivery device and method for operating a thread delivery device |
DE102021115596B3 (en) | 2021-06-16 | 2022-05-12 | Memminger-IRO Gesellschaft mit beschränkter Haftung | thread feeding device |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69223575T2 (en) * | 1991-09-20 | 1998-04-16 | Lgl Electronics Spa | Self-regulating thread brake for a weft feed device |
IT1261331B (en) * | 1993-11-05 | 1996-05-14 | Lgl Electronics Spa | IMPROVEMENT OF POSITIVE MODULATED BRAKING DEVICES FOR YARN FOR WEFT FEEDERS. |
DE29603957U1 (en) * | 1996-03-04 | 1997-07-03 | Sobrevin | Thread storage and delivery device |
SE9700666D0 (en) * | 1997-02-24 | 1997-02-24 | Iro Ab | Fadenliefer device and fade brake |
IT1320497B1 (en) * | 2000-06-02 | 2003-12-10 | Lgl Electronics Spa | IMPROVEMENT OF SELF-REGULATING YARN BRAKING DEVICES FOR BRAKING DEVICES, FOR WEFT FEEDERS. |
DE10056485B4 (en) * | 2000-11-15 | 2013-11-28 | Iropa Ag | Yarn braking ring |
ITTO20010260A1 (en) * | 2001-03-20 | 2002-09-20 | Lgl Electronics Spa | SELF-REGULATING BRAKING DEVICE FOR DITRAMA POWER SUPPLIES. |
NL1022800C1 (en) * | 2003-02-28 | 2004-08-31 | Te Strake Textile B V | Yarn storage reel, has yarn braking means formed by adjustable tension elongated braking parts |
-
2004
- 2004-10-21 DE DE200410051372 patent/DE102004051372A1/en not_active Withdrawn
-
2005
- 2005-10-05 WO PCT/EP2005/010734 patent/WO2006045410A1/en active Application Filing
- 2005-10-05 EP EP05790077A patent/EP1802544A1/en not_active Withdrawn
- 2005-10-05 CN CN 200580034144 patent/CN101044076A/en active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO2006045410A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2006045410A1 (en) | 2006-05-04 |
DE102004051372A1 (en) | 2006-04-27 |
CN101044076A (en) | 2007-09-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20070219 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): IT |
|
17Q | First examination report despatched |
Effective date: 20071112 |
|
DAX | Request for extension of the european patent (deleted) | ||
RBV | Designated contracting states (corrected) |
Designated state(s): IT |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: D04B 15/48 20060101AFI20080912BHEP |
|
RTI1 | Title (correction) |
Free format text: THREAD TENSIONING BODY |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20090221 |