EP1687468A1 - Spinnmaschine - Google Patents
SpinnmaschineInfo
- Publication number
- EP1687468A1 EP1687468A1 EP04738081A EP04738081A EP1687468A1 EP 1687468 A1 EP1687468 A1 EP 1687468A1 EP 04738081 A EP04738081 A EP 04738081A EP 04738081 A EP04738081 A EP 04738081A EP 1687468 A1 EP1687468 A1 EP 1687468A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- spinning machine
- thumb
- machine according
- wedge
- 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.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/46—Loading arrangements
- D01H5/50—Loading arrangements using springs
- D01H5/505—Loading arrangements using springs for top roller arms
Definitions
- the invention relates to a spinning machine with drafting devices for guiding a yarn between drawing device cylinders and top rollers, which are arranged on the one hand on a loading arm which can be pivoted about a pivot axis, on the other hand a pressure thumb on the loading arm of pressure elements of a printing device is pressurized
- Such drafting systems are known in many forms and designs and are used, for example, in ring spinning machines. They serve to stretch the yarn. It has proven to be advantageous if the pressure on the top rollers, respectively. can be adapted to the prevailing conditions on the drafting cylinders. For this purpose, a pressure thumb is provided on the loading arm today, which in the position of use is acted upon by a hose in a tube. This hose is pressurized, which results in a certain load on the drafting cylinders through the top rollers via internal lever transmission. For example, the pressure can be about 2.1 to 2.3 bar during machine operation. When the machine control is switched off, a reducing valve for a reduced pressure must be set to approximately 0.4 to 0.6 bar. This ensures that the top rollers do not deform oval and produce a periodic error when the machine is started.
- the hose has the disadvantage that there is a risk of it leaking and being subject to increased wear.
- the object of the present invention is to develop a spinning machine of the type mentioned above, in which the pressurization of the loading arm is significantly improved.
- a pressure space of the pressure device is assigned to one or more pressure thumbs, which adjoins a defined pressure area that bears directly or indirectly on the pressure thumb, such that a pressure medium of the pressure device exerts a defined pressure force over the pressure area on the pressure thumb ,
- a pneumatic cylinder is assigned to the pressure thumb.
- This pneumatic cylinder can, for example, be screwed into the tube, while a head of a piston rod which protrudes from the pneumatic cylinder is provided with a shell-shaped holder. This cup-shaped holder is used to hold the pressure thumb.
- connecting elements it is also contemplated to connect two or more adjacent pressure thumbs to one another via connecting elements, it being possible for one or more pneumatic cylinders to be associated with the connecting element.
- a bellows cylinder resp. a pressure can is assigned, which is filled with a pressure medium that is compressible to a certain extent.
- a pressure medium that is compressible to a certain extent.
- a position can be stabilized, for example, by appropriate outer or inner guides, small columns engaging in the sleeve guide, for example, from the pressure surface. Many possibilities are conceivable here and should be encompassed by the present inventive concept. It is possible to back up each individual pressure thumb with a bellows cylinder or a pressure can. However, it is also contemplated to fluidly connect several bellows cylinders or pressure cans to one another.
- the pressure thumb is gripped by a wedge.
- the pressure thumb slides on the wedge surface, whereby the pressure is transferred to the loading arm.
- the zone between the pressure thumb and the wedge is formed as a rolling contact (instead of sliding contact).
- the wedge is located on a rail guide in a corresponding tube, the guide part of the wedge engaging in a corresponding groove.
- the wedge is displaced, for example, by a pneumatic cylinder, the piston rod of which engages the wedge.
- the wedge interacts with a stationary chock
- the surface of the wedge on which the pressure thumb rests is configured, for example, parallel to the base area.
- the wedge slides onto the stationary wheel chock and is thus displaced vertically.
- it has proven advisable not to fix the drive for the wedge, but to connect it in an articulated manner, for example with a bearing block.
- an eccentric cam on a rotatable camshaft is assigned to the pressure thumb. Depending on the rotation of the camshaft, the pressure thumb is more or less loaded.
- Figure 1 is a partially shown side view of a drafting system according to the prior art
- FIG. 2 shows a partially shown longitudinal section through a pressure device for a loading arm of a drafting system
- FIG. 3 shows a cross section through the printing device according to FIG. 2 along line HIHI;
- FIG. 4 shows a side view of printing elements of a further exemplary embodiment of a printing device
- FIG. 5 shows a side view of printing elements of a further exemplary embodiment of a printing device
- FIG. 6 shows a partially shown longitudinal section through a further exemplary embodiment of a pressure device for a loading arm of a drafting arrangement
- FIG. 7 shows a cross section through the printing device according to FIG. 6 along line VII-VII;
- FIG. 7a shows a schematically represented side view of an exemplary embodiment of the drive of the printing device according to FIG. 6;
- FIG. 8 shows a side view of further exemplary embodiments of printing elements
- Figure 9 shows a cross section through a printing device with printing elements corresponding to Figure 8 along line IX-IX;
- Figure 10 is a side view of printing elements in a slightly modified arrangement similar to Figure 8.
- Figure 1 is a side view of further embodiments of printing elements
- FIG. 12 shows a cross section through a printing device along line Xll-Xll with printing elements corresponding to FIG. 11;
- FIG. 13 shows a partially shown longitudinal section through a further exemplary embodiment of a printing device with a further exemplary embodiment of a printing element
- FIG. 14 shows a cross section through the printing device according to FIG. 13 along line XIV-XIV;
- FIG. 15 shows a partially shown longitudinal section through a further exemplary embodiment of a printing device with a further exemplary embodiment of an arrangement of printing elements corresponding to FIG. 13;
- FIG. 16 shows a partially illustrated longitudinal section through a further exemplary embodiment of a printing device with a further exemplary embodiment of the arrangement of printing elements corresponding to FIG. 13.
- a commercially available drafting system P has a support structure 1 on which drafting cylinder 2.1, 2.2 and 2.3 are located. In the position of use, these drafting cylinders 2.1 to 2.3 have a yarn for stretching.
- the drafting cylinders 2.1 to 2.3 interact with top rollers 3.1 to 3.3. These top rollers 3.1 to 3.3 are located on a loading arm 4, this loading arm 4 being connected to the support structure 1 via a pivot axis 5.
- a pressure thumb 6 is fixed on the loading arm 4.
- This pressure thumb 6 engages in a tube 7 in which there is an elastic element 8, in particular a hose that can be pressurized. Via this hose 8, a further axis of rotation 9 and a pressure pin 10, pressure is transmitted to the front end of the loading arm 4 and thus to the upper rollers 3.1 to 3.3, which are pressed onto the drafting cylinders 2.1 to 2.3.
- FIGS. 2 to 5 show special configurations of pressure devices for the pressure thumb 6.
- the printing device 11.1 according to FIGS. 2 and 3 there is a rail guide 12 in the tube 7, into which a groove 13 is formed.
- this groove 13 slides e.g. form-fitting dovetail-shaped guide part 14 of a displaceable wedge 15, which engages under the pressure thumb 6.
- This wedge 15 is attacked by a piston rod 16 of a drive 17 which sits on the rail guide 12.
- This drive 17 can consist, for example, of a pneumatic cylinder. If the piston rod 16 is ejected from the drive 17, the wedge 15 travels along the rail guide 12 and engages under the pressure thumb 6, so that this is put under pressure.
- the exemplary embodiment according to FIG. 4 differs from that according to FIGS. 2 and 3 in that a pressure piece (counter wedge) 18 is provided to improve the grip under the pressure thumb 6, which can slide onto the wedge 15.
- the pressure piece 18 is guided in a guide 19 in the tube 7 and is at least in line contact with the pressure thumb 6.
- the bottom of the wedge 15 is supported on a specially designed sliding surface 40 for the purpose of reducing friction.
- a surface 20 of the wedge 15 is formed parallel to the base surface, so that it engages under the pressure thumb 6 in line contact or across the surface. If the wedge 15 is moved over the piston rod 16, it slides onto a chock 21 with a rising surface 22, so that the surface 20 of the wedge 15 moves vertically. So that this is possible without difficulty, the Drive 17 has an articulated connection 23 with corresponding bearing blocks 24, which the rail guide 12 is seated on.
- FIGS. 6 and 7. A further exemplary embodiment of a printing device 11.2 is shown in FIGS. 6 and 7.
- the pressure thumb 6 engages in a corresponding tube 7.
- the tube 7 is traversed by a rotatable camshaft 25, on which there are 6 cams 26 which are arranged eccentrically at a distance from the pressure thumb.
- the camshaft 25 rotates in bearing shells 27.
- the cam 26 presses on the pressure thumb 6 depending on the rotation of the camshaft 25.
- the camshaft 25 can be rotated, for example, via a pneumatic actuator 42 engaging a lever 41.
- FIGS. 8 to 10 show a pressure device 11.3 in which the pressure elements for the pressure thumb 6 each consist of a bellows cylinder 28.
- This bellows cylinder 28 has a pressure surface 29 which engages under the pressure thumb 6.
- the pressure surface 29 is connected via a bellows 30 to a pressure cell 31 which is seated in the tube 7.
- Corresponding outer or inner guides can be provided so that the pressure surface 29 cannot be bent sideways when pressed on the pressure thumb 6.
- the individual pressure sockets 31 are connected to one another by corresponding connecting lines 32.
- a certain number of bellows cylinders have a common pressure cell 31.1 and can therefore be accommodated in the tube 7 in a manner that is easier to assemble.
- a piston 36 can also be arranged under a pressure surface 29 according to FIGS. 11 and 12. This piston 36 is under pressure in the pressure cell 31.
- each piston 36 can have its own ne pressure can 31 or multiple pistons 36 are combined in a common pressure can more easily assembled.
- a pneumatic cylinder 33 is used as the pressure element, which is inserted into the tube 7 and pressurizes a connecting element 34.
- the pneumatic cylinder 33 engages under the connecting element 34 with a shell-shaped holding element 35.
- the connecting element 34 connects two or more adjacent pressure thumbs 6 and 6.1.
- two pneumatic cylinders 33 and 33.1 are inserted into the tube 7, both of which engage the one connecting element 34.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Centrifugal Separators (AREA)
- Photoreceptors In Electrophotography (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10355853A DE10355853A1 (de) | 2003-11-26 | 2003-11-26 | Spinnmaschine |
PCT/CH2004/000441 WO2005052230A1 (de) | 2003-11-26 | 2004-07-12 | Spinnmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1687468A1 true EP1687468A1 (de) | 2006-08-09 |
EP1687468B1 EP1687468B1 (de) | 2008-02-13 |
Family
ID=34609394
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04738081A Expired - Lifetime EP1687468B1 (de) | 2003-11-26 | 2004-07-12 | Spinnmaschine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1687468B1 (de) |
AT (1) | ATE386145T1 (de) |
DE (2) | DE10355853A1 (de) |
WO (1) | WO2005052230A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102586972A (zh) * | 2012-02-23 | 2012-07-18 | 河北农业大学 | 一种纺织摇架工作压力校准装置 |
WO2023247497A1 (en) | 2022-06-20 | 2023-12-28 | Swinsol Ag | Spring unit for top weighting arm |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH268500A (de) * | 1947-03-19 | 1950-05-31 | Rieter Joh Jacob & Cie Ag | Streckwerk mit Belastungsschiene. |
DE1212453B (de) * | 1961-09-16 | 1966-03-10 | Zinser Textilmaschinen Gmbh | Hochschwenkbarer Oberwalzen-Trag- und Belastungsarm fuer Spinnereimaschinenstreckwerke |
FR2081694B1 (de) * | 1970-03-04 | 1975-01-17 | Skf Kugellagerfabriken Gmbh | |
DE3034475A1 (de) * | 1980-09-12 | 1982-04-29 | Zinser Textilmaschinen Gmbh, 7333 Ebersbach | Oberwalzenbe- und -entlastungsvorrichtung fuer spinnereimaschinen-streckwerke |
US5477591A (en) * | 1994-03-17 | 1995-12-26 | Hollingsworth Saco Lowell, Inc. | Bearing device for drafting rollers having pressure relieving means |
DE19504815C1 (de) * | 1995-02-14 | 1996-08-08 | Skf Textilmasch Komponenten | Oberwalzen-Trag- und Belastungsarm für Streckwerke von Spinnereimaschinen |
DE19807801A1 (de) * | 1998-02-25 | 1999-08-26 | Rieter Ingolstadt Spinnerei | Belastungseinrichtung für die Oberwalzen von Streckwerken |
-
2003
- 2003-11-26 DE DE10355853A patent/DE10355853A1/de not_active Withdrawn
-
2004
- 2004-07-12 AT AT04738081T patent/ATE386145T1/de not_active IP Right Cessation
- 2004-07-12 WO PCT/CH2004/000441 patent/WO2005052230A1/de active IP Right Grant
- 2004-07-12 EP EP04738081A patent/EP1687468B1/de not_active Expired - Lifetime
- 2004-07-12 DE DE502004006217T patent/DE502004006217D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO2005052230A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1687468B1 (de) | 2008-02-13 |
WO2005052230A1 (de) | 2005-06-09 |
ATE386145T1 (de) | 2008-03-15 |
DE10355853A1 (de) | 2005-06-23 |
DE502004006217D1 (de) | 2008-03-27 |
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