EP0767130B1 - Achse zum Stützen von Rollenabschnitten in einer Schneide-Aufwickelmaschine - Google Patents

Achse zum Stützen von Rollenabschnitten in einer Schneide-Aufwickelmaschine Download PDF

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Publication number
EP0767130B1
EP0767130B1 EP95115695A EP95115695A EP0767130B1 EP 0767130 B1 EP0767130 B1 EP 0767130B1 EP 95115695 A EP95115695 A EP 95115695A EP 95115695 A EP95115695 A EP 95115695A EP 0767130 B1 EP0767130 B1 EP 0767130B1
Authority
EP
European Patent Office
Prior art keywords
shaft
rings
axis
cutting
portions
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.)
Expired - Lifetime
Application number
EP95115695A
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English (en)
French (fr)
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EP0767130A1 (de
Inventor
Adelio Euromac Costruzioni Meccaniche Miglietta
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Individual
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Individual
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 Individual filed Critical Individual
Priority to EP95115695A priority Critical patent/EP0767130B1/de
Priority to DE69506547T priority patent/DE69506547T2/de
Priority to ES95115695T priority patent/ES2126193T3/es
Publication of EP0767130A1 publication Critical patent/EP0767130A1/de
Application granted granted Critical
Publication of EP0767130B1 publication Critical patent/EP0767130B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/10—Mechanisms in which power is applied to web-roll spindle
    • B65H18/106—Mechanisms in which power is applied to web-roll spindle for several juxtaposed strips
    • 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
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4148—Winding slitting
    • B65H2301/41486—Winding slitting winding on two or more winding shafts simultaneously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/40—Holders, supports for rolls
    • B65H2405/45—Shafts for winding/unwinding

Definitions

  • the present invention relates to a shaft for supporting cut roll portions in a cutting-reeling machine and to a cutting-reeling machine comprising such a shaft.
  • cutting-reeling machine means a machine which can unwind a roll of strip material, for example, paper or plastics film, cut it perpendicular to its axis into two or more portions and rewind the cut portions forming rolls of smaller axial length than the starting roll.
  • the cut portions are usually rewound on a pair of separate shafts so that adjacent portions of the original roll are rewound on different shafts, staggered in a chessboard-type arrangement.
  • the various portions are rewound on respective tubular cores, usually of cardboard, positioned coaxially around the shafts.
  • the present invention relates to a shaft for supporting cut roll portions, comprising a cylindrical body the outer surface of which has at least one recess for housing a resilient envelope which can be connected to a source of fluid under pressure, for example compressed air, by ducts in the cylindrical body.
  • the outer surface of the cylindrical body of such a shaft has a plurality of uniformly-spaced longitudinal circumferential recesses each of which can house a respective resilient envelope which can be inflated as a result of the admission of compressed air to its interior.
  • the inflation of the envelopes causes their outer surfaces to expand and to be pressed against the inner surfaces of the cardboard cores onto which the cut roll portions are rewound, preventing them from sliding relative to the shaft during the rotary motion thereof.
  • the rewinding of the cut portions causes their radial dimensions to vary relative to one another, naturally being greater for the portions cut from the thicker portions of the original roll.
  • the tangential winding velocities of the strip material in the various cut roll portions supported by the same shaft may be different.
  • these tangential velocities result from the product of a constant angular velocity and a radius which may vary as a result of the possible variations in thickness mentioned above.
  • the subject of the present invention is a shaft of the type indicated above, characterized in that it comprises a plurality of rings open along respective generatrices, arranged side by side around the outer surface of the cylindrical body and coaxial with the axis of the shaft, the rings having means for engagement with the body of the shaft which allow the rings to expand circumferentially as a result of the inflation of the resilient envelope.
  • the cores of various cut roll portions disposed around the same shaft do not bear directly on the inflated envelopes but on the outer surfaces of the rings. Moreover, since there is a large number of these, conditions where different cores bear on different portions of the same ring never occur, whereas the same core may bear on several different rings.
  • each core is supported by the shaft practically throughout its circumference and substantially independently of the other cores. This permits independent and homogeneous sliding of each core relative to the shaft if the thickness of the strip wound varies in the various cut roll portions.
  • the tangential velocities of the various cut strip portions which are rewound around the same shaft can thus be kept constant.
  • excessive thickness of the strip in a certain cut strip portion which involves an inappropriate increase in the radius of the roll being rewound, in fact automatically corresponds to a slowing of its angular velocity due to sliding of the core on the surfaces of the rings so that the product of the two quantities remains constant.
  • the material used for forming the rings is preferably a metal, particularly steel, such as to enable the cores which are generally made of cardboard, to slide correctly on the outer surfaces of the rings.
  • a further subject of the present invention is a cutting-reeling machine comprising at least one shaft of the type indicated above.
  • a cutting-reeling machine of known type, described only briefly herein, is indicated 10 in figures 1 and 2.
  • the machine 10 comprises a support frame 12 on which a first rotatable shaft 14, suitable for supporting a roll 16 of strip material to be unwound, is engaged.
  • a plurality of transmission rollers 18 for the strip 20 unwound from the roll 16 is also mounted on the frame 12, as well as a cutting shaft 22 which supports a plurality of blades spaced apart longitudinally and not visible in the drawings, for cutting the strip 20 into several portions in a direction parallel to its length and perpendicular to the axes of the first shaft 14 and of the transmission rollers 18.
  • tubular cores 26 generally made of compressed cardboard, are spaced apart longitudinally thereon. A respective portion of cut strip is wound around each core 26 forming a plurality of rolls 28 of smaller axial length than the original roll 16.
  • Each rewinding shaft 24 comprises ( Figures 3, 4, and 5) a cylindrical body 30 the outer surface of which has a plurality of uniformly-spaced circumferential grooves 32 of rectangular cross-section alternating with longitudinal recesses 34. Both the grooves 32 and the recesses 34 are straight and parallel to the axis of the shaft 24.
  • Each recess 34 houses a respective resilient envelope 36 connected by a respective radial duct 38 formed in the cylindrical body 30 to a duct 40 coaxial with the axis of the shaft 24 and connectible to a source of fluid under pressure, for example, compressed air.
  • Each shaft 24 also comprises a plurality of rings 42, preferably made of a metal such as steel, which are open along respective generatrices 44 and are arranged side by side around the outer surface of the cylindrical body 30 and coaxial with the axis of the shaft 24.
  • rings 42 preferably made of a metal such as steel, which are open along respective generatrices 44 and are arranged side by side around the outer surface of the cylindrical body 30 and coaxial with the axis of the shaft 24.
  • Each ring 42 has edges 46 turned over radially towards the axis of the shaft 24 along the open generatrix 44 for engaging with clearance in one of the grooves 32 in the outer surface of the cylindrical body 30.
  • the strip 20 which is gradually unwound from the roll 16 is cut perpendicular to the axis of the roll 16 into several portions by blades mounted on the shaft 22.
  • the cut portions of the strip 20 then form the rolls 28 as a result of being rewound around respective cores 26 positioned on one of the shafts 24 which are rotated about their own axes.
  • the cores 26 are arranged on the two rewinding shafts 24 in a chessboard-type arrangement so that adjacent portions of strip 20 of the original roll 16 are wound on different shafts 24.
  • the turned over edges 46 may be inserted in any one of the grooves 32. As can be seen from Figure 4, it is convenient to insert the edges 46 of adjacent rings 42 in different grooves 32.
  • the rings 42 have quite short axial lengths so that none of them simultaneously acts as a support for two or more adjacent cores 26. In this embodiment, in fact, the opposite occurs, that is, the same core 26 bears on several different rings 42, as can be seen in Figure 4.
  • Each core 26 is thus engaged on the shaft 24 independently of the others.
  • the various cores 26 slide differently relative to the rings 42 of the portion of shaft 24 around which they are fitted, respectively.
  • the tangential rewinding speed which is given by the product of the angular velocity and the radius of each roll 28 is thus kept constant at all times for the various rolls 28 associated with the same shaft 24.
  • each ring 42 may be selected taking into account that at least one ring 42 is required for each roll portion 28.

Landscapes

  • Winding Of Webs (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Claims (6)

  1. Welle (24), um geschnittene Rollenteile (28) in einer Schneide/Wickel-Maschine (10) aufzunehmen, wobei die Welle (24) einen zylindrischen Körper (30) enthält, dessen Außenfläche mit zumindest einer Ausnehmung (34) versehen ist, um eine elastische Hülle (36) aufzunehmen, die über Kanäle (38, 40) im zylindrischen Körper (30) mit der Quelle eines unter Druck stehenden Fluids verbunden werden kann;
       wobei die Welle (24) dadurch gekennzeichnet ist, daß sie eine Vielzahl von Ringen (42) enthält, die sich entlang von entsprechenden Erzeugenden (44) öffnen und nebeneinander rund um die Außenfläche des Körpers (30) sowie koaxial zur Achse der Welle (24) angeordnet sind, wobei die Ringe (42) eine Einrichtung besitzen, um in den Körper (30) der Welle (24) einzugreifen, wobei sich die Ringe dadurch ausdehnen können, daß die elastische Hülle (36) aufgeblasen wird.
  2. Welle (24) gemäß Anspruch 1, dadurch gekennzeichnet, daß jeder Ring (42) mit Kanten (46) versehen ist, die radial zur Achse der Welle (24) entlang der offenen Erzeugenden (44) umgebogen werden und mit einem Spiel in eine Rille (32) eingreifen können, die in der Außenfläche der Welle (24) parallel zu deren Achse ausgebildet ist.
  3. Welle (24) gemäß Anspruch 2, dadurch gekennzeichnet, daß die Außenfläche des Körpers (30) mit einer Vielzahl von gleichmäßig beabstandeten, am Umfang verlaufenden Rillen (32) versehen ist, die sich mit länglichen Ausnehmungen (34) abwechseln, die in der Außenfläche der Welle (24) parallel zu deren Achse ausgebildet sind, um entsprechende elastische Hüllen (36) aufzunehmen.
  4. Welle (24) gemäß Anspruch 3, dadurch gekennzeichnet, daß jede elastische Hülle (36) über einen entsprechenden radialen Kanal (38), der im zylindrischen Körper (30) ausgebildet ist, mit einem Kanal (40) verbunden ist, der koaxial zur Achse der Welle (24) verläuft und mit der Quelle eines unter Druck stehenden Fluids verbunden werden kann.
  5. Welle (24) gemäß irgendeinem der bisherigen Ansprüche, dadurch gekennzeichnet, daß die Ringe (42) aus Metall hergestellt werden, im besonderen aus Stahl.
  6. Schneide/Wickel-Maschine (10), wobei die Maschine eine Welle (24) gemäß irgendeinem der bisherigen Ansprüche enthält.
EP95115695A 1995-10-05 1995-10-05 Achse zum Stützen von Rollenabschnitten in einer Schneide-Aufwickelmaschine Expired - Lifetime EP0767130B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP95115695A EP0767130B1 (de) 1995-10-05 1995-10-05 Achse zum Stützen von Rollenabschnitten in einer Schneide-Aufwickelmaschine
DE69506547T DE69506547T2 (de) 1995-10-05 1995-10-05 Achse zum Stützen von Rollenabschnitten in einer Schneide-Aufwickelmaschine
ES95115695T ES2126193T3 (es) 1995-10-05 1995-10-05 Eje para sostener porciones de rollos cortados en una maquina cortadora-bobinadora.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP95115695A EP0767130B1 (de) 1995-10-05 1995-10-05 Achse zum Stützen von Rollenabschnitten in einer Schneide-Aufwickelmaschine

Publications (2)

Publication Number Publication Date
EP0767130A1 EP0767130A1 (de) 1997-04-09
EP0767130B1 true EP0767130B1 (de) 1998-12-09

Family

ID=8219685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95115695A Expired - Lifetime EP0767130B1 (de) 1995-10-05 1995-10-05 Achse zum Stützen von Rollenabschnitten in einer Schneide-Aufwickelmaschine

Country Status (3)

Country Link
EP (1) EP0767130B1 (de)
DE (1) DE69506547T2 (de)
ES (1) ES2126193T3 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1293442B1 (it) * 1997-07-11 1999-03-01 Miglietta Maurizio Albero perfezionato per il sopporto di sezioni tagliate di bobina in una macchina taglia-bobinatrice.
ES2237297B1 (es) * 2003-07-11 2007-03-01 Industrias Tapla, S.L. Maquina cortadora-rebobinadora de tiras de material laminar.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2625338A (en) * 1951-03-08 1953-01-13 Downingtown Mfg Co Expansible roll shaft
US3878999A (en) * 1972-08-18 1975-04-22 Aluminum Co Of America Strip winding apparatus
US3917187A (en) * 1974-07-12 1975-11-04 Lawrence R Damour Expanding mandrel or chuck
US4220291A (en) * 1979-08-27 1980-09-02 Papa Robert B Apparatus for winding tape on cores
US4342433A (en) * 1979-11-05 1982-08-03 Arrow Converting Equipment Inc. Air differential mandrel and method of differentially winding and rewinding tapes
US4332356A (en) * 1981-02-23 1982-06-01 Damour Lawrence R Chuck for simultaneously winding a plurality of narrow product strips on cores
US4461430A (en) * 1983-03-01 1984-07-24 Louis Lever Differential winding air shaft

Also Published As

Publication number Publication date
DE69506547T2 (de) 1999-06-24
ES2126193T3 (es) 1999-03-16
EP0767130A1 (de) 1997-04-09
DE69506547D1 (de) 1999-01-21

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