EP1712508B1 - Device for the automatic doffing of bobbins in a crosswinding machine - Google Patents
Device for the automatic doffing of bobbins in a crosswinding machine Download PDFInfo
- Publication number
- EP1712508B1 EP1712508B1 EP06111731A EP06111731A EP1712508B1 EP 1712508 B1 EP1712508 B1 EP 1712508B1 EP 06111731 A EP06111731 A EP 06111731A EP 06111731 A EP06111731 A EP 06111731A EP 1712508 B1 EP1712508 B1 EP 1712508B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bobbin
- rolling chute
- rolling
- bobbins
- conveyor belt
- 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.)
- Not-in-force
Links
- 238000005096 rolling process Methods 0.000 claims abstract description 49
- 230000015572 biosynthetic process Effects 0.000 claims description 11
- 238000004804 winding Methods 0.000 description 4
- 238000006467 substitution reaction Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
- B65H67/04—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements
- B65H67/0405—Arrangements for removing completed take-up packages or for loading an empty core
- B65H67/0411—Arrangements for removing completed take-up packages or for loading an empty core for removing completed take-up packages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
Definitions
- the present invention relates to a device for the automatic doffing of bobbins in a crosswinding machine and for the substitution of a bobbin which has reached the pre-established dimensions, with a new tube around which the yarn coming from a feeding pirn is wound to form a new bobbin.
- crosswinding procedures essentially consist of unwinding operations of the yarn from feeding pirns, cleaning the yarn from possible faults and its crosswinding onto tubes, according to forms and dimensions which vary according to the destination of the yarn.
- the bobbins are normally cylindrical, or truncated-conical with a low conicity, if, on the contrary, the yarn is destined for feeding low-speed machines, the bobbins are truncated-conical with a higher conicity.
- the degree of conicity is selected so as to always ensure a correct unwinding of the bobbins during their final use, in the presence of more or less strong centrifugal forces.
- a crosswinding machine allows the contemporaneous crosswinding of a series of bobbins, i.e. it normally comprises a series of devices for the formation of bobbins, so-called crosswinding heads, positioned side by side, and served by at least one common service device, also called trolley, which can run along the whole crosswinding machine, positioning itself in correspondence with each crosswinding head and which effects, in an automated manner, various operations which are cyclically required by each crosswinding head, among which, in particular, the substitution of bobbins which have reached the pre-established dimensions with a new winding tube around which a new bobbin is formed.
- the doffing operation of a bobbin and its substitution envisages stopping the crosswinding head, cutting the yarn and withholding its end coming from the pirn, removing the bobbin which has reached the pre-established dimensions and substituting it with a new tube to which the yarn end coming from the pirn is fastened to restart the crosswinding.
- the removed bobbin is sent to a conveyor belt which runs along the crosswinding machine, to receive the completed bobbins coming from the various crosswinding heads.
- Doffing operations of a bobbin require the intervention of the common service device which, in cooperation with the devices already positioned on the crosswinding head, recovers the yarn end coming from the pirn, removes the completed bobbin, positions the new winding tube and arranges the yarn end on the new winding tube.
- the transfer of the bobbin to the conveyor belt is conveniently effected by rolling the bobbin along a tilted surface situated between the formation position of the bobbin and the position of the conveyor belt.
- a tilted surface situated between the formation position of the bobbin and the position of the conveyor belt.
- the rolling is facilitated by dividing the course of the bobbin towards the conveyor belt into several parts, with intermediate stops which prevent the bobbin from gaining speed while rolling and at the same time allowing its position to be adjusted.
- the division of the bobbin course is obtained by means of levers which can rotate around a rotation axis, between a position in which they intercept the bobbin along its run and a position in which they are lifted and let the bobbin pass. The levers can also be rotated so as to push the bobbin.
- a pertinent prior art reference is constituted by DE 19520132 A1 that discloses a rolling chute divided in two parts, a swinging plate 20 and a fixed chute 55, the swinging plate 20 being driven by an arm 38.
- the bobbin guide 41 has stopping means for the rolling bobbins on the chute 20 constituted by a guide arm 43 and a housing arm 42, that are independent fro:n the arm 38.
- DE 3842783 A1 is relevant to double twisting machines and discloses only a fixed cover plate 9 sloping downwards a conveyor belt 2 in the centre of the frame.
- GB patent 1443642 is relevant to a doffing device, travelling in front of the winding frame, that discharges and transports away the take-up bobbins.
- An objective of the present invention is therefore to ensure the correct rolling of the bobbin towards the conveyor belt, by proposing means capable of forming a series of stop and start points of the bobbin in its rolling, and reducing the number of necessary driving elements.
- a further objective of the present invention is to guarantee a greater productivity of the crosswinding machine through a greater operating factor.
- these show in particular a bobbin 1, a supporting arm of the bobbin, commonly called bobbin-holder arm 2, a driving and traversing cylinder 3 (which collaborates with the formation of the bobbin and whose presence and function have nothing to do with the specific object of the present invention), a conveyor belt 4 and a rolling chute 5, for allowing the bobbin 1 to roll by gravity from its formation position, on the bobbin-holder arm 2, to the conveyor belt 4.
- figure 1 a yarn (not shown), which is unwound from a pirn (not shown) and after passing through a series of devices whose function is to eliminate faults of the yarn itself, is wound around the bobbin 1.
- the yarn coming from the pirn is cut and the rotation of the bobbin 1 is interrupted.
- the bobbin-holder arm 2 is induced to release the bobbin 1, which falls onto the rolling chute 5 and is stopped by a stopping element 6, integral with the structure of the crosswinding head, which crosses the surface of the rolling chute 5 in correspondence with an opening 12.
- the constraint between the stopping element 6 and the structure of the crosswinding head can conveniently have a certain degree of elasticity, for example by supporting the stopping element 6 with an elastic lamella 13.
- the bobbin-holder arm 2 is lifted and, during its movement, engages the lower surface of the rolling chute 5, by exerting upward pressure on the same, with a counter-edge element 7.
- the rolling chute 5 is hinged on a rotation pin 8, integral with the structure of the crosswinding head, positioned under the rolling chute 5 in a shifted position towards the conveyor belt 4 with respect to the contact point between the rolling chute 5 and the counter-edge element 7 integral with the bobbin-holder arm 2.
- the pressure exerted by the counter-edge element 7 on the rolling chute 5 therefore causes a rotation of the rolling chute around the rotation pin 8, causing a difference in level between the two ends of the rolling chute 5 itself.
- the lifting of the portion of the rolling chute 5 on which the bobbin 1 is situated is such as to exceed the height of the stopping element 6, the bobbin 1 is released and, by force of gravity, begins rolling along the rolling chute 5, in the direction of the conveyor belt 4.
- the end of the rolling chute 5 facing the conveyor belt 4, consists of a flap 9, hinged around a hinge 10 and resting on a supporting counter-edge 11.
- a flap 9 hinged around a hinge 10 and resting on a supporting counter-edge 11.
- the bobbin-holder arm 2 is returned to its original position. Consequently, the rolling chute 5 also returns to its original position and the flap 9 rotates around the hinge 10 until it has formed an aligned position with the rolling chute 5.
- the position of the flap 9 is determined by the supporting counter-edge 11, which prevents the rotation of the flap 9 around the hinge 10 from continuing beyond the alignment position with the conveyor belt 4.
- the very weight of the portion of rolling chute 5 facing the formation position of the bobbin 1 is such that, without the pressure exerted by the counter-edge element 7 of the bobbin-holder arm 2, the rolling chute 5 automatically returns to its original position, also in the presence of the bobbin 1 on the end of its portion facing the conveyor belt.
- means can be provided for facilitating the return of the rolling chute 5 to its original position.
- the portion of rolling chute 5 facing the conveyor belt 4 is preferably slightly tilted towards the conveyor belt with respect to the remaining part, forming a slight difference in level which helps the rolling of the bobbin 1 towards the conveyor belt 4.
- the bobbin 1 begins to roll from a stop position and as the remaining distance to be covered by the bobbin 1 with said rolling movement, is short, the bobbin 1 is prevented from accelerating and gaining an undesired speed; the bobbin 1, on the contrary, is delicately positioned on the conveyor belt 4.
- the rolling chute 5 can be equipped with one or more raised side edges (not shown), in particular on the side of the rolling chute 5 towards which the conicity of the bobbin is facing.
- This expedient already used also for devices produced according to the known art, helps to prevent the bobbins from effecting a curvilinear trajectory during their rolling, which would induce them to be in a transversal position with respect to the direction towards the conveyor belt.
Landscapes
- Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Valve Device For Special Equipments (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000630A ITMI20050630A1 (it) | 2005-04-13 | 2005-04-13 | Dispositovo per la levata automatica di rocche in una macchina roccatrice |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1712508A1 EP1712508A1 (en) | 2006-10-18 |
EP1712508B1 true EP1712508B1 (en) | 2008-06-18 |
Family
ID=36687966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06111731A Not-in-force EP1712508B1 (en) | 2005-04-13 | 2006-03-27 | Device for the automatic doffing of bobbins in a crosswinding machine |
Country Status (6)
Country | Link |
---|---|
US (1) | US20060230737A1 (it) |
EP (1) | EP1712508B1 (it) |
CN (1) | CN100560460C (it) |
AT (1) | ATE398596T1 (it) |
DE (1) | DE602006001481D1 (it) |
IT (1) | ITMI20050630A1 (it) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011105431A (ja) * | 2009-11-16 | 2011-06-02 | Murata Machinery Ltd | 巻取機 |
DE102013018985A1 (de) | 2013-11-13 | 2015-05-13 | Saurer Germany Gmbh & Co. Kg | Verfahren zum Durchführen eines Kreuzspulenwechsels an einer Arbeitsstelle einer Kreuzspulen herstellenden Textilmaschine sowie zugehörige Kreuzspulen herstellende Textilmaschine. |
CN107352325A (zh) * | 2017-08-03 | 2017-11-17 | 上海海石花纺织机械设备有限公司 | 筒纱卸纱用缓冲省力滑道机构 |
CN109179083B (zh) * | 2018-09-28 | 2023-08-04 | 陕西华燕航空仪表有限公司 | 一种纱卷滚出装置 |
CN112093583B (zh) * | 2020-09-24 | 2022-09-20 | 陕西华燕航空仪表有限公司 | 一种纺纱筒管定位装置 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3879925A (en) * | 1973-12-05 | 1975-04-29 | Toyoda Automatic Loom Works | Rotary doffer in automatic doffing apparatus |
DE2506362C2 (de) * | 1975-02-14 | 1992-01-02 | Stahlecker, Fritz, 7347 Bad Überkingen | Offenend-Spinnmaschine |
IT1100423B (it) * | 1978-11-29 | 1985-09-28 | Alberto Pietro | Macchina automatica per la realizzazione in continuo di rotoli di tessuto |
IT1197301B (it) * | 1986-09-29 | 1988-11-30 | Savio Spa | Apparecchiatura e procedimento per addurre tubetti avvolgitori alle singole stazioni di raccolta di una macchina tessile. |
IT1202589B (it) * | 1987-02-27 | 1989-02-09 | Savio Spa | Dispositivo e procedimento per la levata autromatica delle rocche in una macchina roccatrice |
DE3842783C2 (de) * | 1988-12-20 | 1993-10-14 | Saurer Allma Gmbh | Aufwärts-Zwirnmaschine, insbesondere Doppeldrahtzwirnmaschine |
US5459990A (en) * | 1993-10-14 | 1995-10-24 | Tns Mills, Inc. | Facility and method for producing yarn |
DE19520132A1 (de) * | 1995-06-01 | 1996-12-05 | Schlafhorst & Co W | Kreuzspulen herstellende Textilmaschine |
DE19608789A1 (de) * | 1996-03-07 | 1997-09-18 | Rieter Ingolstadt Spinnerei | Spinnereimaschine mit einem Hülsenmagazin |
DE19750726A1 (de) * | 1997-11-15 | 1999-05-20 | Schlafhorst & Co W | Verfahren zum Betreiben einer Kreuzspulen herstellenden Textilmaschine sowie Vorrichtung für eine solche Textilmaschine |
-
2005
- 2005-04-13 IT IT000630A patent/ITMI20050630A1/it unknown
-
2006
- 2006-03-27 EP EP06111731A patent/EP1712508B1/en not_active Not-in-force
- 2006-03-27 AT AT06111731T patent/ATE398596T1/de not_active IP Right Cessation
- 2006-03-27 US US11/389,814 patent/US20060230737A1/en not_active Abandoned
- 2006-03-27 DE DE602006001481T patent/DE602006001481D1/de not_active Expired - Fee Related
- 2006-04-13 CN CNB2006100736326A patent/CN100560460C/zh active Active
Also Published As
Publication number | Publication date |
---|---|
EP1712508A1 (en) | 2006-10-18 |
DE602006001481D1 (de) | 2008-07-31 |
ATE398596T1 (de) | 2008-07-15 |
CN1847129A (zh) | 2006-10-18 |
CN100560460C (zh) | 2009-11-18 |
US20060230737A1 (en) | 2006-10-19 |
ITMI20050630A1 (it) | 2006-10-14 |
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