EP1043259A2 - Selbstzentrierende spreizbare Welle - Google Patents

Selbstzentrierende spreizbare Welle Download PDF

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Publication number
EP1043259A2
EP1043259A2 EP99119660A EP99119660A EP1043259A2 EP 1043259 A2 EP1043259 A2 EP 1043259A2 EP 99119660 A EP99119660 A EP 99119660A EP 99119660 A EP99119660 A EP 99119660A EP 1043259 A2 EP1043259 A2 EP 1043259A2
Authority
EP
European Patent Office
Prior art keywords
passage way
expanding shaft
thrust element
expanding
bobbin
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Withdrawn
Application number
EP99119660A
Other languages
English (en)
French (fr)
Other versions
EP1043259A3 (de
Inventor
Paolo Garella
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Finsid Srl
Original Assignee
Finsid Srl
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 Finsid Srl filed Critical Finsid Srl
Publication of EP1043259A2 publication Critical patent/EP1043259A2/de
Publication of EP1043259A3 publication Critical patent/EP1043259A3/de
Withdrawn legal-status Critical Current

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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
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B65H75/24—Constructional details adjustable in configuration, e.g. expansible
    • B65H75/242—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages
    • B65H75/243—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages actuated by use 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
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B65H75/24—Constructional details adjustable in configuration, e.g. expansible
    • B65H75/242—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages
    • B65H75/248—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages expansion caused by actuator movable in axial direction
    • B65H75/2484—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages expansion caused by actuator movable in axial direction movable actuator including wedge-like or lobed member

Definitions

  • the present invention concerns a self-centering pneumatic expanding shaft.
  • expanding shafts are used in a large number of industrial applications for the rotating support of bobbins.
  • expanding shafts generally consist of a hollow framing cylinder, apt to form the carrying structure of the expanding shaft, and of a set of movable elements, of different type, projecting from the contour of the cylinder so as to grip a bobbin core and dragging it in rotation.
  • the movable gripping elements are in the form of extended expanding pads, which are housed into a plurality of longitudinal seats formed in the surface of the hollow cylinder.
  • operation of the pneumatic expanding shaft provides that the bobbin is fitted thereon with the expanding pads at rest and is blocked by said pads which, being expanded through the introduction of compressed air, press on the inner surface of the bobbin core, gripping the same.
  • One of the systems mostly adopted to obtain the centering in static conditions - namely, before causing the rotation of the bobbin - but also in dynamic conditions, is to combine, on the same shaft, a merely pneumatic expanding system with an additional expanding system of different type, which may be apt to symmetrically expand in respect of the rotation axis, independently from the loading conditions.
  • Said additional system is normally of the mechanic or, rather, of the pneumechanic type.
  • This system allows to establish a mechanic coupling between the gripping elements belonging to the same section area, thereby producing a fully symmetrical radial displacement of the same: this means that the gripping elements - for instance, in the form of keys - belonging to the same section area, project in unison from the surface of the shaft, thereby ensuring a mechanical centering of the bobbin core.
  • a solution - which will be defined as a "single-effect" solution - provides to combine a conventional pneumatic system with a cone system for extracting mechanic gripping elements, such as keys, having an inclined plane apt to engage with said cones.
  • the extraction of the gripping elements, and thus the centering of the bobbin is obtained by "shooting" thereon the mechanic cones by means of compressed air. Nonetheless the cones thus shot, in a static condition of the shaft, tend to loosen and gain some slack during rotation of the shaft: this leads the weight of the bobbin to progressively load exclusively on the pneumatic system, whereby the centering of the bobbin comes to fail.
  • centering system not to be a purely mechanic type, but to comprise a set of independent pneumechanic modules. That means a system where gripping elements of the centering system, thought mechanically connected each other, for instance being engaged on the same traslable thrust element with inclined planes, are extracted, in a reversible way, through the introduction of compressed air into an expansion chamber defined, at least in part, by the thrust element itself.
  • a manufacturing technique recently offered on the market provides to adopt one or more pneumechanic modules - each comprising a gripping element group engaged to a single thrust element with inclined plans - coupled one to the other.
  • the head module comprises a thrust element working as a piston for the whole series of the modules coupled to it.
  • the expansion chamber of the head module is fed by compressed air through an inlet duct. From the same inlet duct starts an inflation duct which communicates with the inflating pads belonging to the pneumatic expanding system.
  • the object of present invention is, then, to overcome the mentioned drawbacks, supplying an expanding shaft with a composite system, where the centering and blocking operations automatically occur sequentially, that is, in which the pneumechanic centering system accomplishes the centering always before the pneumatic blocking system starts to work.
  • a second object is to supply an expanding shaft which is apt to "recognize" the bobbin core, in which the blocking system is inherently unable to grip a wider core than the expected specific one.
  • a generic hollow framing cylinder 1 for an expanding shaft is equipped with a pneumatic blocking system for a bobbin (not shown) and a pneumechanic centering system.
  • the pneumatic blocking system comprises a series of rubber short splines 2a, apt to grip the bobbin core to drag it in rotation, integral to expanding pads 2b housed in longitudinal seats in the framing cylinder 1.
  • the pneumechanic centering system comprises one or more thrust elements 3ai, slideable within the hollow framing cylinder 1, each thrust element engaging, through inclined plane 3a', a plurality of gripping elements 3b, such as keys, apt to be radially extended from the framing cylinder 1 itself.
  • One of said thrust elements 3ai for example the head element 3a1 entirely illustrated in the drawings, ends with a thrust surface 4a faced to an expansion chamber 4.
  • a selecting rod 5 protrudes, lenghtwise to the sliding axis of element 3a1, from the thrust surface 4a of the head element 3a1, in which rod a distribution duct 6 for a fluid under pressure, preferably compressed air, is provided.
  • the distribution duct 6 communicates with the expansion chamber 4 and with further(not visible)chambers.
  • the selecting rod 5 slides inside a coupling cylinder 7.
  • a vent duct 10 is provided, apt to allow the compressed air to flow out of the framing cylinder 1, and also an inflation duct 11, apt to distribute compressed air towards the expanding pads 2b.
  • the inflation duct 11 communicates, through a communication chamber 8a defined between the two gaskets 9a and 9b, with the vent duct 10: therefore, the expanding pad 2b is at ambient pressure and remains deflated.
  • Compressed air supplied into the distribution duct 6 is delivered only towards the expansion chamber 4, which is tightly closed by the engagement of gasket 9a with the coupling cylinder 7 walls. Therefore, at the beginning, only the thrust head element 3a1 is operated, and as a result, the pneumechanic centering system is activated.
  • gasket 9a disengages from the coupling cylinder 7 walls and opens the passage way between the expansion chamber 4 and the inflation duct 11.
  • gasket 9b has been shifted between the inflation duct 11 and the vent duct 10: therefore, distribution chamber 8a doesn't communicate any longer with the outside. Only in this state (Fig. 2), compressed air can also operate the pneumatic blocking system.
  • a check valve 12 is then provided at the external end of the distribution duct 6, in order to keep the working pressure inside both the centering and blocking systems without keeping on feeding them with compressed air.
  • the device of the present invention is apt to achieve a sequential operation according to the desired order, obtaining, in this way, one of the purposes mentioned above.
  • the coupling cylinder 7 which has been illustrated as a separate element for manufactural requirements, can also be integral with the framing cylinder 1 itself appropriately shaped and drilled.

Landscapes

  • Winding Of Webs (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Golf Clubs (AREA)
EP99119660A 1999-03-29 1999-10-04 Selbstzentrierende spreizbare Welle Withdrawn EP1043259A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1999MI000647A IT1312239B1 (it) 1999-03-29 1999-03-29 Albero espansibile autocentrante a gonfiaggio sequenziale.
ITMI990647 1999-03-29

Publications (2)

Publication Number Publication Date
EP1043259A2 true EP1043259A2 (de) 2000-10-11
EP1043259A3 EP1043259A3 (de) 2001-05-23

Family

ID=11382499

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99119660A Withdrawn EP1043259A3 (de) 1999-03-29 1999-10-04 Selbstzentrierende spreizbare Welle

Country Status (2)

Country Link
EP (1) EP1043259A3 (de)
IT (1) IT1312239B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105293202A (zh) * 2015-11-07 2016-02-03 江阴市申港电讯器材厂 多段气囊型气胀套串装拼接气胀轴
EP2982628A1 (de) * 2014-08-08 2016-02-10 Sidel S.p.a. Con Socio Unico Automatisierte Vorrichtung zum Laden einer Bahnrolle
WO2016198549A1 (de) * 2015-06-09 2016-12-15 Windmöller & Hölscher Kg Wickelwelle zur aufnahme von wenigstens einer wickelhülse
CN113120699A (zh) * 2021-03-30 2021-07-16 九江德福科技股份有限公司 一种耳箔收集装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2632294B3 (fr) * 1988-06-02 1990-12-21 Achard Picard Jean Arbre expansible et retractable notamment pour le serrage de mandrins de bobines recevant des materiaux en bande
IT1282026B1 (it) * 1995-11-30 1998-03-06 Gianpiero Re Albero espansibile pneumeccanico autocentrante portabobine con comando ausiliario a listelli longitudinali azionati da camera d'aria

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2982628A1 (de) * 2014-08-08 2016-02-10 Sidel S.p.a. Con Socio Unico Automatisierte Vorrichtung zum Laden einer Bahnrolle
WO2016198549A1 (de) * 2015-06-09 2016-12-15 Windmöller & Hölscher Kg Wickelwelle zur aufnahme von wenigstens einer wickelhülse
US10513410B2 (en) 2015-06-09 2019-12-24 Windmöller & Hölscher Kg Winding shaft for receiving at least one winding core
CN105293202A (zh) * 2015-11-07 2016-02-03 江阴市申港电讯器材厂 多段气囊型气胀套串装拼接气胀轴
CN113120699A (zh) * 2021-03-30 2021-07-16 九江德福科技股份有限公司 一种耳箔收集装置

Also Published As

Publication number Publication date
EP1043259A3 (de) 2001-05-23
IT1312239B1 (it) 2002-04-09
ITMI990647A1 (it) 2000-09-29

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