WO2016071789A1 - Griffe de leveuse comprenant un boîtier divisé en deux - Google Patents

Griffe de leveuse comprenant un boîtier divisé en deux Download PDF

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Publication number
WO2016071789A1
WO2016071789A1 PCT/IB2015/058109 IB2015058109W WO2016071789A1 WO 2016071789 A1 WO2016071789 A1 WO 2016071789A1 IB 2015058109 W IB2015058109 W IB 2015058109W WO 2016071789 A1 WO2016071789 A1 WO 2016071789A1
Authority
WO
WIPO (PCT)
Prior art keywords
gripper
holding element
holding
fastening
membrane
Prior art date
Application number
PCT/IB2015/058109
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 EP15791038.1A priority Critical patent/EP3215659B1/fr
Priority to CN201580059561.1A priority patent/CN107074478B/zh
Publication of WO2016071789A1 publication Critical patent/WO2016071789A1/fr

Links

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
    • B65H67/02—Arrangements for removing spent cores or receptacles and replacing by supply packages at paying-out stations
    • 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
    • B65H67/069—Removing or fixing bobbins or cores from or on the vertical peg of trays, pallets or the pegs of a belt
    • 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
    • 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 gripper for gripping a coil or bobbin, with a fastening element and a cylindrical holding element with a longitudinal axis, wherein the holding element has an inner wall and an outer wall, and on the inner wall a pneumatically actuable clamping element is arranged, which via an air channel can be acted upon with compressed air, and the retaining element is held on the fastening element via a securing element.
  • spinning machines especially in ring spinning machines, a variety already finished wound coils or cops are taken together at the spinning stations of the spinning machine and replaced by empty bobbin tubes in a bobbin changing operation.
  • 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 grippers or doffer grippers are arranged on the doffer bar in order to grasp and remove the coils or the empty bobbin tubes in common.
  • the individual grippers are preferably pneumatically actuated and include a compressed air-acted clamping element in the form of a membrane, which is brought over the coil or bobbin and then engages the coil or bobbin tube by introducing compressed air.
  • air supply ducts are arranged in the doffer bar, from which the compressed air is directed via feeds to the individual membranes of the grippers.
  • CN 2 873 813 Y describes a correspondingly designed gripper.
  • the gripper has a cylindrical holding element for receiving a coil or bobbin tube.
  • a clamping element in the form of a rubber membrane is arranged, which is adjustable via a pneumatic device. With the membrane it is possible to grasp the end region of the coil or bobbin tube inserted into the interior of the retaining element from the outside.
  • the membrane is fixed on the retaining element in the direction of a longitudinal axis by means of two sealing caps, which are respectively arranged on the underside and upper side of the retaining element. The two The end caps are clipped onto the retaining element via a snap connection.
  • the gripper comprises a fastening element.
  • the fastening element is firmly connected to the holding element and contains an air channel for the compressed air supply to the membrane.
  • the fastening element has on its upper side a hook and on its underside an elastic retaining tab.
  • the gripper is fixed via the hook on a receptacle and the elastic retaining tab in a locking groove on the doffer bar.
  • a gripper similar to the structure is shown in EP 0 303 877 A1.
  • the fastening element of the gripper has on its underside and on its upper side an elastic retaining tab.
  • About the two elastic retaining tabs of the gripper is disengaged and releasably attachable in two parallel locking grooves on the doffer bar.
  • the detent grooves allow a plurality of individual grippers to be secured along the doffer bar.
  • the membrane When changing a coil or bobbin tube, the membrane is pressurized with compressed air via the air channel. The membrane thus contracts in the holding element and detects the coil or bobbin tube at its end region from the outside. To release the coil or bobbin in the holding element again, the membrane is relieved by removing the compressed air. Due to the constantly changing load and discharge of the membrane, and the friction of the membrane on the coil or bobbin, the membrane wears off after a certain period of operation. The wear manifests itself in the fact that the membrane becomes porous and has leaks. As a result, a safe change of the coil or bobbin tube is no longer guaranteed. It is therefore necessary to replace the worn membrane with a new membrane after a certain period of operation.
  • a major disadvantage of the gripper described is that the exchange of a worn membrane against a new membrane designed as very expensive.
  • the gripper To replace a membrane, the gripper must first be removed by the operator from the doffer bar.
  • the hook is released from the doffer beam and the elastic retaining lug is disengaged from the detent groove or, in the case of the gripper from EP 0 303 877 A1, the two elastic retaining tabs disengaged from the two parallel locking grooves. Outside the doffer then the upper and lower cap are released from the holding element. The worn membrane is then separated from the retaining element and replaced with a new membrane.
  • the new membrane is then fixed by the caps again in the direction of the longitudinal axis of the holding element on the holding element and the gripper attached to the doffer bar. Due to the construction of the gripper, the replacement of a worn-out membrane is very time-consuming, since the entire gripper has to be removed from the doffer bar. An exchange of the membrane is thereby associated with long downtime of the spinning machine. In addition, due to the frequent assembly and disassembly of the gripper on the doffer bar, unnecessary wear of the elastic gripping tab of the gripper occurs. As a result, a sufficient clamping action of the elastic retaining tab is not ensured in the locking groove on the doffer bar. The invention now has the object to eliminate this drawback of the known gripper.
  • the retaining element is held by a securing element on the fastening element.
  • the retaining element is secured transversely to its longitudinal axis on the fastening element.
  • the fastening element and the holding element are separated from each other, ie, the fastening element and the holding element are two separate components.
  • the gripper must therefore not be removed from the doffer beam to replace the clamping element. Rather, it is possible to leave the gripper on the doffer bar and to remove the holding element with the clamping element from the fastener by loosening the securing element. The worn clamping element can then be easily replaced with a new clamping element.
  • the securing element partially surrounds the outer wall of the retaining element or lies partially against the outer wall of the retaining element. This ensures that the retaining element is sufficiently held or positioned on the fastening element.
  • the securing element forms, in addition to the fastening element, a part of the housing of the gripper.
  • the securing element encloses between 180 ° -270 ° of the outer wall of the holding element.
  • the securing element is connected via a snap connection with the fastening element.
  • the snap connection is designed such that the fastening element has elevations and the securing element recesses which surround the elevations.
  • the securing element has elevations and the fastening element recesses which surround the elevations.
  • the clamping element is fixed over a first portion of its circumference via the fastening element and over a second portion of its circumference on the securing element at least at one of its ends in the direction of the longitudinal axis on the holding element. It is also advantageous if the clamping element or the membrane at its two ends, ie at the lower and at the upper end of the holding element, over a first portion of its circumference on the fastening element and over a second portion of its circumference on the securing element in the direction the longitudinal axis of the holding element is fixed to the holding element. In contrast to the prior art thereby eliminating the two caps for the axial fixation of the clamping element on the holding element.
  • the clamping element is fixed over 180 ° of the circumference of the clamping element on the fastening element and over 180 ° of the circumference of the clamping element on the securing element on the holding element.
  • a sealing ring is arranged at least at one end of the holding element between the clamping element and the fastening element. The sealing ring is arranged either at the lower or at the upper end of the retaining element or at the lower and at the upper end of the retaining element.
  • the sealing ring bears against the fastening element with a first end face and presses the clamping element against the retaining element with a second end face. It is also possible that the sealing ring rests with its outer circumference on the fastening element and presses with its inner circumference the clamping element against the retaining element.
  • the elevations are formed semicircular.
  • at least one rib is arranged on the outer wall of the holding element over at least part of the circumference of the holding element. The rib serves as a bearing surface for the securing element and ensures that the retaining element is held or positioned sufficiently on the securing element via the securing element.
  • the rib is advantageously arranged circumferentially on the holding element.
  • the rib encloses the holding element completely or a part of the circumference of the holding element, preferably between 90 ° -270 °.
  • the rib can also be arranged extending in the longitudinal direction on the holding element. In this case, a plurality of spaced-apart ribs may be arranged on the holding element.
  • the air duct is integrally connected to the retaining element and the fastening element has a receptacle for the air duct.
  • integrated means that the air duct is firmly integrated into the retaining element, ie the air duct is not separable from the retaining element, which has the advantage that the retaining element and the air duct can be manufactured in the form of a single injection-molded part
  • the receptacle has for this purpose a slightly smaller dimension than the air channel
  • the receptacle extends completely or partially over the length of the air channel
  • the air duct has on an outer surface at least one annular shoulder which forms a sealing point between the air duct and the fastening element is made of an elastic plastic
  • the heel is in one piece connected to the air duct. If compressed air is applied to the clamping element, the air duct expands in the radial direction in the receptacle. The heel is pressed against the fastener and seals the
  • an additional sealing element is arranged in the receptacle between the fastening element and the air duct.
  • the sealing element seals the air duct with respect to the fastening element and the doffer beam.
  • the sealing element is advantageously designed as a sleeve made of rubber and extends partially over the length of the air duct.
  • the sealing element has on its outer surface two spaced circumferentially extending ribs.
  • FIG. 1 shows a perspective view of a gripper according to the prior art
  • FIG. 2 shows a longitudinal section of the gripper according to FIG. 1
  • FIG. 3 shows a perspective view of a gripper according to the invention
  • FIG. 4 shows a longitudinal section of the gripper according to FIG. 3, FIG Cross section of the gripper according to FIG. 3,
  • the gripper 1 shows a gripper 1 belonging to the prior art.
  • the gripper 1 is made of plastic and has a cylindrical holding element 2 for a coil or bobbin tube 3 ( Figure 2).
  • the cylindrical holding element 2 has an inner wall 4, on which a pneumatically adjustable clamping element 5 in the form of a membrane made of rubber is arranged.
  • a pneumatically adjustable clamping element 5 in the form of a membrane made of rubber is arranged.
  • the membrane 5 With the membrane 5, it is possible to detect the end portion of the introduced into the interior of the holding member 2 coil or bobbin tube 3 from the outside.
  • the adjustment of the membrane 5 takes place in the direction of the double arrow 6 via a pneumatic device.
  • the membrane 5 is fixed in the direction of a longitudinal axis 10 on the holding element 2 by means of two closure caps 7 or clamps, which are respectively arranged on the underside 8 and upper side 9 of the holding element 2.
  • the two closure caps 7 are clipped onto the holding element 2 via a snap connection.
  • the gripper 1 For fastening the gripper 1 to a doffer bar (not shown in FIGS. 1 and 2), the gripper 1 comprises a fastening element 11.
  • the fastening element 1 1 is fixedly connected to the holding element 2 and includes an air channel 12 for the compressed air supply of the membrane 5.
  • the air channel 12 is connected to a compressed air line, which extends in the longitudinal direction of the doffer beams.
  • the air channel 12 is sealed off from the doffer beam via a first sealing element 13 arranged on the fastening element 11.
  • the fastening element 1 1 also has a second sealing element 14, which seals the gripper 1 with respect to a compressed air signal line, which likewise extends in the longitudinal direction on the doffer bar.
  • On the fastener 1 1 1 two elastic retaining tabs 15 are arranged.
  • the elastic retaining tabs 15 are connected at their first end 16 to the fastening element 1 1. With its second free end 17 of the gripper 1 is disengaged and releasably attachable to the doffer beam. The holding or clamping action of the retaining tabs 15 is increased or supported by an embedded below the retaining tabs 15 in the fastener 1 1 steel spring 18.
  • the membrane 5 When changing a coil or bobbin tube 3, the membrane 5 is acted upon via the air channel 12 with compressed air. The membrane 5 thereby separates from the inner wall 4 of the holding element 2 and detects the coil or bobbin tube 3 at its outer end region. The spool or bobbin tube 3 can then be transferred to a transport device or spindle, not shown. To release the coil or bobbin tube 3 in the holding element 2 again, the membrane 5 is relieved by removing the compressed air. Due to the alternating load and release of the membrane 5 in the holding element 2, and the friction of the membrane 5 on the coil or bobbin tube 3, the membrane 5 is worn after a certain period of operation. The wear manifests itself in that the membrane 5 is porous and has leaks. As a result, a safe change of the coil or bobbin tube 3 is no longer guaranteed. It is therefore necessary to replace the worn membrane 5 with a new membrane 5 after a certain period of operation.
  • a major disadvantage of the gripper 1 shown in Fig.1 and Fig.2 is that the exchange of a worn membrane 5 against a new membrane 5 designed as very expensive.
  • the gripper 1 In order to exchange a membrane 5, the gripper 1 must first be removed by the operating staff from the doffer bar. For this purpose, the elastic retaining tabs 15 are disengaged. The worn-out membrane 5 can then be separated from the retaining element 2 by loosening the closure caps 7 and against a new membrane 5 be replaced. The new membrane 5 is then fixed by the caps 7 again in the axial direction on the support member 2 and the gripper 1 clipped on the elastic retaining tabs 15 on the doffer beams.
  • FIG. 3 shows a perspective view of a gripper 1 according to the invention.
  • the gripper 1 is made of plastic and has a cylindrical holding element 2 for a coil or bobbin tube 3 ( Figure 4).
  • the holding element 2 has an inner wall 4, on which a pneumatically adjustable clamping element 5 is arranged in the form of a membrane made of rubber. With the membrane 5, it is possible to detect the end portion of the introduced into the interior of the holding member 2 coil or bobbin tube 3 from the outside. The adjustment of the membrane 5 takes place in the direction of the double arrow 6 via a pneumatic device.
  • the gripper 1 comprises a fastening element 11.
  • two elastic retaining tabs 15 are arranged, which are connected at its first end 16 with the fastening element 1 1. With its second free end 17 of the gripper 1 is disengaged and releasably attachable to the doffer beam.
  • the Haltering. Clamping action of the retaining tabs 15 is increased or supported by a below the retaining tabs 15 in the fastener 1 1 embedded steel spring 18.
  • the holding element 2 is held by a securing element 19 on the fastening element 1 1.
  • the securing element 19 encloses in this case 180 ° of the outer wall 20 of the holding element 2, or lies over 180 ° on the outer wall 20 of the holding element 2 ( Figure 5).
  • the securing element 19 thus constitutes, in addition to the fastening element 1 1, a part of the housing of the gripper 1.
  • the securing element 19 is provided with the retaining element 2 transversely to its side. ner longitudinal axis 10 secured to the fastener 1 1.
  • On the outer wall 20 of the retaining element 2, a rib 21 is arranged over the entire circumference of the retaining element 2.
  • the rib 21 serves as a support surface for the securing element 19 and ensures that the holding element 2 is held or positioned on the securing element 19 sufficiently on the fastening element 1 1.
  • the securing element 19 is releasably connected to the fastening element 1 1 via a snap connection.
  • the snap connection is designed such that the fastening element 1 1 elevations 22 and the securing element 19 tabs 23 having recesses 24 which enclose the elevations 22 and in which the elevations 22 engage.
  • the membrane 5 is both at a lower end 8 as well as at an upper end 9 of the support member 2 over 180 ° of the circumference of the membrane 5 via the fastener 1 1 and over 180 ° of the circumference of the membrane 5 via the securing element 19 in the axial direction Holding element 2 fixed.
  • a sealing ring 25 is arranged for better sealing of the membrane 5 relative to the holding element 2 is at the lower end 8 and at the upper end 9 of the holding element 2 between the diaphragm 5 and the fastening element 1 1 and the securing element 19, a sealing ring 25 is arranged.
  • the sealing ring 25 rests with a first end face 26 on the fastening element 11 and on the securing element 19 and presses with a second end face 27 the membrane 5 against the lower end 8 or the upper end 9 of the holding element 2.
  • the holding element 2 is on its inner wall 4 are provided with semicircular elevations 28 which extend over the length of the holding element 2 ( Figure 5).
  • the holding element 2 is also provided with an air channel 12.
  • the air channel 12 is fixedly connected to the outer wall 20 of the retaining element 2, that is, the retaining element 2 and the air channel 12 are integrally formed.
  • the air channel 12 On its outer surface 30, the air channel 12 has an annular shoulder 31.
  • the shoulder 31 extends over a length 32 of 8 mm of the air channel 12 and is made of an elastic plastic.
  • the shoulder 31 is integrally connected to the air channel 12.
  • the fastening element 1 1 has a receptacle 33 for the air channel 12.
  • the receptacle 33 is cylindrical and extends over the length of the air channel 12.
  • the holding element 2 is connected via the shoulder 31 of the air channel 12 loosely connected to the fastening element 1 1.
  • the membrane 5 If the membrane 5 is acted upon by compressed air, the air channel 12 expands in the direction 5 dialer direction in the receptacle 33. As a result, the shoulder 31 is pressed against the fastening element 1 1 and seals the air channel 12 relative to the fastening element 1 1.
  • an additional Diehl o processing element 13 is arranged between the fastening element 1 1 and the air channel 12.
  • the air duct 12 is connected via the sealing element 13 with a compressed air line which extends in the longitudinal direction of the doffer bar.
  • the sealing member 13 is formed as a sleeve of rubber. With a first end 35, the sealing element 13 bears against the annular shoulder 31 of the air channel 12. With a second end 36, the sealing element 13 seals the air duct 12 against the compressed air line on the doffer bar.
  • the sealing element 13 has at its periphery two spaced ribs 37.
  • a further sealing element 14 is also arranged, which seals the gripper 1 against a compressed air signal line, which also extends in the longitudinal direction of the doffer bar.
  • the sealing element 14 also has two spaced-apart ribs 37 on its circumference for better sealing.
  • the gripper 1 according to the invention does not have to be removed from the doffer bar as a whole to replace a membrane 5. Rather, it is possible to leave the gripper 1 on the doffer bar and the
  • the securing element 19 is released from the fastening element 1 1.
  • the holding element 2 can then be separated from the fastening element 11 and the worn-out membrane 5 can be exchanged for a new membrane 5.
  • the downtime of the spinning machine during the replacement of a membrane 5 is kept low. moreover

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

L'invention concerne une griffe (1) destinée à saisir une bobine ou une douille de bobine (3). La griffe comprend un élément de fixation (11) et un élément de retenue cylindrique (2) qui présente un axe longitudinal (10). L'élément de retenue (2) comporte une paroi intérieure (4) et une paroi extérieure (20). Un élément de blocage (5) à commande pneumatique est disposé sur la paroi intérieure (4) et peut être soumis à l'action d'air comprimé par le biais d'un conduit d'air (12). Afin de simplifier la construction de la griffe (1), l'élément de retenue (2) est retenu sur l'élément de fixation par un élément de sûreté (19), et l'élément de sûreté (19) entoure partiellement la paroi extérieure (20) de l'élément de retenue (2).
PCT/IB2015/058109 2014-11-03 2015-10-21 Griffe de leveuse comprenant un boîtier divisé en deux WO2016071789A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP15791038.1A EP3215659B1 (fr) 2014-11-03 2015-10-21 Griffe de leveuse comprenant un boîtier divisé en deux
CN201580059561.1A CN107074478B (zh) 2014-11-03 2015-10-21 具有两部分式壳体的落纱机夹持器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01676/14A CH710323A1 (de) 2014-11-03 2014-11-03 Doffergreifer mit zweigeteiltem Gehäuse.
CH01676/14 2014-11-03

Publications (1)

Publication Number Publication Date
WO2016071789A1 true WO2016071789A1 (fr) 2016-05-12

Family

ID=54477038

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2015/058109 WO2016071789A1 (fr) 2014-11-03 2015-10-21 Griffe de leveuse comprenant un boîtier divisé en deux

Country Status (4)

Country Link
EP (1) EP3215659B1 (fr)
CN (1) CN107074478B (fr)
CH (1) CH710323A1 (fr)
WO (1) WO2016071789A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107345324A (zh) * 2017-07-28 2017-11-14 贵州金州兔产业有限公司 一种新型兔毛纺纱机
CH715389A1 (de) * 2018-09-27 2020-03-31 Rieter Ag Maschf Greifer zum Greifen einer Spule oder Spulenhülse.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018201097A1 (de) 2018-01-24 2019-07-25 AUDI HUNGARIA Zrt. Handhabungsvorrichtung zum Greifen und Handhaben eines Stators einer elektrischen Maschine, insbesondere für ein Kraftfahrzeug

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US3831995A (en) * 1973-06-08 1974-08-27 Molson Co Ltd Uncaser cup
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
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1364639A (fr) * 1962-04-18 1964-06-26 Eugen Maier Fa C Pince pneumatique pour changeur de bobine de métier à filer
US3831995A (en) * 1973-06-08 1974-08-27 Molson Co Ltd Uncaser cup
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
DE4128216A1 (de) * 1991-08-26 1993-03-04 Chemnitzer Spinnereimaschinen Stationaere vorrichtung zum abziehen und aufstecken von spulen und huelsen 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
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
EP2226572A2 (fr) * 2009-03-04 2010-09-08 WEMEFA Horst Christopeit GmbH Dispositif de fixation d'un radiateur

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107345324A (zh) * 2017-07-28 2017-11-14 贵州金州兔产业有限公司 一种新型兔毛纺纱机
CH715389A1 (de) * 2018-09-27 2020-03-31 Rieter Ag Maschf Greifer zum Greifen einer Spule oder Spulenhülse.
EP3628759A1 (fr) 2018-09-27 2020-04-01 Maschinenfabrik Rieter AG Griffe de peigne pourvue de boitier en deux parties

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CN107074478A (zh) 2017-08-18
CN107074478B (zh) 2019-07-16

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