WO2016059496A1 - Fixation de griffe de peigneur - Google Patents

Fixation de griffe de peigneur Download PDF

Info

Publication number
WO2016059496A1
WO2016059496A1 PCT/IB2015/057440 IB2015057440W WO2016059496A1 WO 2016059496 A1 WO2016059496 A1 WO 2016059496A1 IB 2015057440 W IB2015057440 W IB 2015057440W WO 2016059496 A1 WO2016059496 A1 WO 2016059496A1
Authority
WO
WIPO (PCT)
Prior art keywords
doffer
elastic retaining
gripper
spring
retaining tabs
Prior art date
Application number
PCT/IB2015/057440
Other languages
German (de)
English (en)
Inventor
Robert Nägeli
Original Assignee
Maschinenfabrik Rieter Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Rieter Ag filed Critical Maschinenfabrik Rieter Ag
Priority to CN201580055684.8A priority Critical patent/CN106795659B/zh
Priority to EP15775511.7A priority patent/EP3206981B1/fr
Publication of WO2016059496A1 publication Critical patent/WO2016059496A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
    • D01H9/001—Bobbin-taking arrangements
    • D01H9/003—Graspers operating under the action of a fluid
    • 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
    • B65H67/06—Supplying cores, receptacles, or packages to, or transporting from, winding or depositing stations
    • B65H67/068—Supplying or transporting empty cores
    • 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 invention relates to a doffer gripper for attachment to a dofferbal- ken, comprising a fastening element which comprises two spaced apart elastic retaining tabs and arranged between the elastic retaining tabs rigid support member, wherein the two elastic retaining tabs having a first end with the Fastening element are connected and are positioned with a second free end in each case via at least one spring element in a rest position.
  • the spinning machines have a doffer device with a doffer bar, which is arranged movably on the spinning machine, for example via a scissors mechanism.
  • a plurality of doffer grippers are arranged on the doffer bar in order to be able to grasp and remove the sleeves together or put them on.
  • the individual doffer grippers are preferably pneumatically actuated and include a pressurizable membrane, which is brought over the sleeves and then engages the sleeves by introducing compressed air.
  • air supply ducts are arranged in the doffer bar, from which the compressed air is led via feeds to the individual membranes of the doffer gripper.
  • EP 0 303 877 A1 describes such a doffer device with a correspondingly formed doffer gripper.
  • the doffer gripper comprises for attachment to the doffer bar a fastener having two spaced apart elastic retaining tabs.
  • the fastening element further has a rigid support element between the elastic retaining tabs.
  • About the elastic retaining tabs of the doffer gripper is disengaged and releasably attached to the doffer bar.
  • the doffer bar is provided for this purpose on its surface with an upper and a lower locking groove extending in the longitudinal direction of the Dofferbalkens.
  • the locking groove has a profile of mutually parallel lugs, in which engage the elastically deformable retaining tabs with their free ends.
  • the two locking grooves make it possible to attach a plurality of individual doffing grippers along the doffer bar.
  • the holding or clamping effect of the retaining tabs is increased or supported by a snapped underneath the retaining tabs, exchangeable steel spring.
  • the steel spring rests with its one end on the rigid support member and loaded with its other end, the free end of the retaining tab.
  • the tightness of the retaining tabs can thus be adjusted via the steel spring to the desired value.
  • a major disadvantage of the doffer rapier described is that the Doffreiokfer has high manufacturing costs due to its structure.
  • the invention now has the object to eliminate this drawback of the known Doffergreifers.
  • the at least one spring element is formed integrally with the free end of the respective elastic retaining tab and the rigid support member.
  • integral means that the spring element is fixedly connected to the free end of the respective elastic retaining tab and the rigid support element
  • the at least one spring element is made of an elastic plastic. This has the advantage that the elastsiche spring element is molded onto the respective elastic retaining tab and the rigid support member. The fastener, the elastic retaining tabs, the rigid support member and the spring element can thus in one operation from a single Injection molded part are produced. The production costs of the doffing gripper can be further reduced thereby.
  • the at least one spring element in the direction of the free ends of the elastic retaining tabs has a width of 2-10mm.
  • the respective elastic retaining tab has sufficient rigidity in its rest position and is held in this position.
  • the spring element exerts a high spring force on the respective elastic retaining tab when deflected from its rest position. A sufficient clamping action of the elastic retaining tabs on the doffer bar is thus ensured.
  • the at least one spring element in the rest position has a curvature or pre-bend in its longitudinal direction.
  • the longitudinal direction represents the direction in which the spring element exerts a spring force on the elastic retaining tab.
  • the spring element is thereby pre-bent in the rest position, that is, the spring element is in the rest position outside a vertical plane, which runs parallel to the two end faces of the elastic retaining tabs.
  • two spring elements are integrally connected to the free end of the respective elastic retaining tab and the rigid support member, wherein a respective spring element is arranged on one of the two end sides of the respective elastic retaining tab. This ensures that the respective elastic retaining tab is acted upon in its deflection with a high spring force. In addition, by means of the two spring elements is achieved that the respective elastic retaining tab is seen when deflected from its rest position over its width uniformly applied with a spring force. Thus, even with high manufacturing tolerances of the locking groove of Dof Ferbalkens ensured sufficient clamping action of the elastic retaining tabs in the locking groove.
  • the two spring elements are each integrally connected via a connecting piece with a side surface of the fastening element.
  • the connector extends in the direction of the free end of the elastic retaining tabs and is integrally connected to the rigid support member and the side surface of the fastener. The connector ensures high stability of the doffer gripper.
  • the side surface of the fastening element has a curvature in its longitudinal direction.
  • the curvature advantageously corresponds to the curvature of the spring element in its rest position.
  • the curvature on the side surface of the fastener has a positive effect on the production of Doffergreifers.
  • FIG. 1 shows a perspective view of a prior art doffer gripper
  • FIG. 2 shows a side view X1 of the doffer gripper from FIG. 1
  • FIG. 3 shows a rear view Y1 of the doffer gripper from FIG.
  • FIG. 4 shows a partial cross section of a doffer bar attached to a doffer gripper of Figure 1
  • FIG. 5 shows a perspective view of a doffer gripper according to the invention
  • FIG. 6 shows a side view X5 of the doffer gripper from FIG. 5
  • FIG. 7 shows a rear view Y5 of the doffer gripper from FIG.
  • the doffer gripper 1 shows a prior art doffer gripper 1.
  • the doffer gripper 1 is made of plastic and has a cylindrical receptacle 2 for a coil or bobbin, not shown.
  • a pneumatically adjustable clamping element 3 is arranged in the cylindrical receptacle 2. With the clamping element 3, it is possible to detect the end region of the introduced into the interior of the Doffergreifers 1 coil or bobbin tube from the outside.
  • the doffer gripper 1 For fastening the doffer gripper 1 on a doffer bar 4 (FIG. 4) running in the machine longitudinal direction, the doffer gripper 1 comprises a fastening element 5 with two elastic retaining tabs 6a, 6b arranged at a distance from one another.
  • the elastic retaining tabs 6a, 6b are connected to the fastening element 5 with a first end 27a, 27b.
  • the fastening element 5 between the elastic retaining tabs 6a, 6b comprises a rigid support element 7, in which an air channel 8 for the air supply of the pneumatically adjustable clamping element 3 and a cylindrical cavity 9 for receiving an elastic Abwellen. sealing element 10 are arranged (Fig.3 and Fig.4).
  • the doffer gripper 1 via the elastic retaining tabs 6a, 6b disengageable and releasably attachable to the doffer bar 4.
  • the doffer bar 4 has on its surface an upper and a lower latching groove 11a, 11b, which extends in the longitudinal direction of the doffer bar 4.
  • the two locking grooves 1 1 a, 1 1 b each have a profile of mutually parallel lugs 12a, 12b, in which the elastically deformable retaining tabs 6a, 6b engage with their free end 13a, 13b.
  • About the two locking grooves 1 1 a, 1 1 b is a variety of Doffergreifern 1 next to each other detachable and latched to the doffer bar 4 attachable.
  • the holding or clamping action of the elastic retaining tab 6a, 6b in the respective locking groove 11a, 11b is increased or supported by a replaceable steel spring 14a, 14b snapped in underneath the elastic retaining tab 6a, 6b.
  • the steel spring 14a, 14b is designed U-shaped. With its first leg 15a, 15b, the steel spring 14a, 14b rests on the rigid support element 7. With its second leg 16a, 16b, the steel spring 14a, 14b positions the free end 13a, 13b of the elastic retaining tab 6a, 6b in a rest position (FIGS. 2 and 3).
  • the elastic retaining tabs 6a, 6b are compressed in the direction of the rigid support element 7, ie the elastic retaining tabs 6a, 6b are deflected out of their rest position.
  • the steel spring 14a, 14b is stretched.
  • the elastic retaining tabs 6a, 6b are released again, that is, the force applied externally to the elastic retaining tabs 6a, 6b force is removed.
  • the free end 13a, 13b of the elastic retaining tab 6a, 6b by the restoring force of the steel spring 14a, 14b against the lugs 12a, 12b of the locking groove 1 1 a, 1 1 b pressed ( Figure 4).
  • FIG. 5 shows a perspective view of a doffer gripper 1 according to the invention.
  • the doffer gripper 1 is like the well-known doffer gripper (Fig.1) made of plastic and has a cylindrical receptacle 2 for a coil or bobbin, not shown. In the cylindrical receptacle 2, a pneumatically adjustable clamping element 3 is arranged.
  • the doffer gripper 1 For fastening the doffer gripper 1 to a doffer bar 4, the doffer gripper 1, like the known doffer gripper, comprises a fastening element 5 with two elastic retaining tabs 6a, 6b arranged at a distance from one another. The elastic retaining tabs 6a, 6b are connected to the fastening element 5 with a first end 27a, 27b.
  • a rigid support member 7 is arranged on the fastening element 5, in which an air channel 8 for the air supply of the pneumatically adjustable clamping element 3 and a cylindrical cavity 9 are arranged for receiving an elastic sealing element 10 (Figure 7).
  • the doffer gripper 1 is like the known doffer gripper ( Figure 4) via the elastic retaining tabs 6a, 6b disengaged and releasably attachable to the doffer bar 4.
  • the doffer gripper 1 in contrast to the known doffer gripper on no additional steel springs.
  • a spring element 18a, 18b made of plastic is arranged in the embodiment of the doffer gripper 1 according to the invention at the two end faces 17a, 17b of the elastic retaining tabs 6a, 6b.
  • the doffer gripper 1 thus has four spring elements (Fig.7).
  • the spring element 18a, 18b is integrally connected to the free end 13a, 13b of the elastic retaining tab 6a, 6b and a connecting piece 19.
  • the connecting piece 19 is part of the rigid support element 7 and extends in the direction of the free end 13a, 13b of the elastic retaining tabs 6a, 6b.
  • the connecting piece 19 is integrally connected to a side surface 20 of the fastening element 5.
  • the spring elements 18a, 18b are thus firmly integrated into the fastening element 5 and position the free end 13a, 13b of the elastic retaining tab 6a, 6b in a rest position.
  • This is a significant difference to the doffer gripper of the prior art (Fig.1), in which the steel spring 14a, 14b is releasably connected to the free end 13a, 13b of the respective elastic retaining tab 6a, 6b and the rigid support member 7.
  • the spring element 18a, 18b in the direction of the free end 13a, 13b of the elastic retaining tabs 6a, 6b has a width 21 of 5 mm.
  • a free gap 22 remains between the spring element 18a, 18b and the side surface 20 of the fastening element 5.
  • the spring element 18a, 18b has in its rest position in its longitudinal direction a curvature 23 or pre-bend (FIG. 7).
  • the side surface 20 of the fastener 5 has a curvature 24 which is formed to match the curvature 23 of the spring element 18a, 18b.
  • the elastic holding straps 6a, 6b are compressed in the direction of the rigid support element 7, that is to say the elastic holding straps 6a, 6b are deflected out of their rest position (dashed line 25a, 25b in FIG. In this case, the spring elements 18a, 18b according to the dashed line 26a, 26b in Figure 7 further bent or stretched.
  • the elastic retaining tabs 6a, 6b are released again, that is, the force applied from the outside to the elastic retaining tabs 6a, 6b force is removed.
  • the free end 13a, 13b of the elastic retaining tabs 6a, 6b by the restoring force of the spring elements 18a, 18b against the lugs 12a, 12b of the locking groove 1 1 a, 1 1 b pressed.
  • the stiffness or the clamping action of the elastic retaining tabs 6a, 6b can thus be adjusted to the desired value via the spring elements 18a, 18b made of plastic by means of a corresponding geometric design.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Clamps And Clips (AREA)
  • Buckles (AREA)

Abstract

L'invention concerne une griffe de peigneur (1), destinée à être fixée à une barre de peigneur (4), qui comprend un élément de fixation (5) qui comporte deux pattes de retenue élastiques (6a, 6b) disposées à distance l'une de l'autre et un élément de support rigide (7) disposé entre les pattes de retenue élastiques (6a, 6b) ; les deux pattes de retenue élastiques (6a, 6b) sont reliées par une première extrémité (27a, 27b) à l'élément de fixation (5) et sont chacune positionnées par une seconde extrémité libre (13a, 13b) dans une position de repos par le biais d'au moins un élément à ressort (18a, 18b). Pour simplifier la structure de la griffe de peigneur (1), l'au moins un élément à ressort (18a, 18b) est formé d'une seule pièce avec l'extrémité libre (13a, 13b) de la patte de retenue élastique (6a, 6b) respective et l'élément de support rigide (7).
PCT/IB2015/057440 2014-10-16 2015-09-29 Fixation de griffe de peigneur WO2016059496A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201580055684.8A CN106795659B (zh) 2014-10-16 2015-09-29 用于落纱机夹持器的紧固装置
EP15775511.7A EP3206981B1 (fr) 2014-10-16 2015-09-29 Fixation de griffe de peigneur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01585/14A CH710261A1 (de) 2014-10-16 2014-10-16 Befestigung für einen Doffergreifer.
CH01585/14 2014-10-16

Publications (1)

Publication Number Publication Date
WO2016059496A1 true WO2016059496A1 (fr) 2016-04-21

Family

ID=54256800

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2015/057440 WO2016059496A1 (fr) 2014-10-16 2015-09-29 Fixation de griffe de peigneur

Country Status (4)

Country Link
EP (1) EP3206981B1 (fr)
CN (1) CN106795659B (fr)
CH (1) CH710261A1 (fr)
WO (1) WO2016059496A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3628759A1 (fr) 2018-09-27 2020-04-01 Maschinenfabrik Rieter AG Griffe de peigne pourvue de boitier en deux parties

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110438605A (zh) * 2019-09-10 2019-11-12 江阴市华方智能纺机装备有限公司 一种新型细纱机抓管器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0303877A1 (fr) 1987-08-18 1989-02-22 Maschinenfabrik Rieter Ag Dispositif pour remplacer en commun des tubes de bobines d'une machine textile, en particulier d'un continu à filer à anneaux
US5172540A (en) * 1987-08-18 1992-12-22 Rieter Machine Works, Ltd. Apparatus for changing bobbin tubes and tube gripper therefor
US5203155A (en) * 1990-11-23 1993-04-20 Zinser Textilmaschinen Gmbh Tube-sensing device for doffing and donning apparatus
CN201010733Y (zh) * 2007-03-22 2008-01-23 铜陵市精特机械有限责任公司 一种气缸式抓管装置
DE102012104667A1 (de) * 2012-05-30 2013-12-05 Maschinenfabrik Rieter Ag Vorrichtung zum gemeinsamen Wechseln einer Mehrzahl von Hülsen an einer Textilmaschine mit einem Greiferbalken

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
DE4122780A1 (de) * 1991-07-10 1993-01-14 Zinser Textilmaschinen Gmbh Aussengreifer zum greifen von fasergarntraegern an spinn- oder zwirnmaschinen
CN2873813Y (zh) * 2006-01-04 2007-02-28 东台纺织机械有限责任公司 细纱机集体落纱装置的握纱器
CN200992611Y (zh) * 2007-01-05 2007-12-19 铜陵市松宝机械有限公司 用于细纱机的抓管器
DE102010027904A1 (de) * 2010-04-19 2011-10-20 Hilti Aktiengesellschaft Befestigungsvorrichtung für Anbauteile an Montageschienen
CN102477599A (zh) * 2010-11-30 2012-05-30 青岛云龙纺织机械有限公司 细纱机自动落纱机械臂装置
WO2012125360A2 (fr) * 2011-03-17 2012-09-20 A. Raymond Et Cie Éléments de fixation actionnés par un matériau intelligent
DE102011111905A1 (de) * 2011-08-30 2013-02-28 Daimler Ag Bauteil aus mindestens zwei Profilelementen
CN103741287A (zh) * 2013-11-29 2014-04-23 吴江市大业丝绸整理有限公司 一种落纱机拨纱装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0303877A1 (fr) 1987-08-18 1989-02-22 Maschinenfabrik Rieter Ag Dispositif pour remplacer en commun des tubes de bobines d'une machine textile, en particulier d'un continu à filer à anneaux
US5172540A (en) * 1987-08-18 1992-12-22 Rieter Machine Works, Ltd. Apparatus for changing bobbin tubes and tube gripper therefor
US5203155A (en) * 1990-11-23 1993-04-20 Zinser Textilmaschinen Gmbh Tube-sensing device for doffing and donning apparatus
CN201010733Y (zh) * 2007-03-22 2008-01-23 铜陵市精特机械有限责任公司 一种气缸式抓管装置
DE102012104667A1 (de) * 2012-05-30 2013-12-05 Maschinenfabrik Rieter Ag Vorrichtung zum gemeinsamen Wechseln einer Mehrzahl von Hülsen an einer Textilmaschine mit einem Greiferbalken

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3628759A1 (fr) 2018-09-27 2020-04-01 Maschinenfabrik Rieter AG Griffe de peigne pourvue de boitier en deux parties

Also Published As

Publication number Publication date
CH710261A1 (de) 2016-04-29
EP3206981A1 (fr) 2017-08-23
CN106795659B (zh) 2019-05-17
CN106795659A (zh) 2017-05-31
EP3206981B1 (fr) 2018-09-05

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