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EP0790209B1 - Spreizbarer Spannkopf für den Wickelkern einer Materialbahn sowie solche Spannköpfe aufweisende Auf- bzw. Abwickelmaschine - Google Patents

Spreizbarer Spannkopf für den Wickelkern einer Materialbahn sowie solche Spannköpfe aufweisende Auf- bzw. Abwickelmaschine Download PDF

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Publication number
EP0790209B1
EP0790209B1 EP97400294A EP97400294A EP0790209B1 EP 0790209 B1 EP0790209 B1 EP 0790209B1 EP 97400294 A EP97400294 A EP 97400294A EP 97400294 A EP97400294 A EP 97400294A EP 0790209 B1 EP0790209 B1 EP 0790209B1
Authority
EP
European Patent Office
Prior art keywords
jaws
jaw holder
rod
core
longitudinal
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
EP97400294A
Other languages
English (en)
French (fr)
Other versions
EP0790209A1 (de
Inventor
Jean-Paul Ayffre
Robert Jean Malinie
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.)
Megtec Systems SAS
Original Assignee
Megtec Systems SAS
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 Megtec Systems SAS filed Critical Megtec Systems SAS
Publication of EP0790209A1 publication Critical patent/EP0790209A1/de
Application granted granted Critical
Publication of EP0790209B1 publication Critical patent/EP0790209B1/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
    • 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
    • B65H75/245—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages by deformation of an elastic or flexible material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/70—Clutches; Couplings
    • B65H2403/72—Clutches, brakes, e.g. one-way clutch +F204
    • B65H2403/725—Brakes

Definitions

  • the present invention relates to a pin which can be inserted into a mandrel having a cylindrical internal surface and on which a strip material, in particular paper. is wound in coil, this spindle comprising a shaft connected to a braking device, a tubular jaw holder having a external terminal part which is free and part internal terminal which is carried by the shaft, the jaw holder being integral in rotation with the latter, jaws housed in longitudinal slots in the part jaw holder external terminal, elastic members biasing the jaws radially outwards so that they engage the internal surface of the mandrel when the pin is inserted into the latter, and means for retainers provided at the ends of the jaws to prevent these last to come out of the longitudinal grooves when the spindle is out of the chuck, see GB-A-1 294 568.
  • pins are intended to be inserted into the ends of the mandrels, generally made of cardboard, supporting the material wound in a reel, and coming into engagement with the internal surface of the mandrels to allow training rotating coils.
  • the present invention proposes to provide a solution to this problem and to do this it has as its object a pin having the structure indicated in the introduction and which is characterized in that it further comprises means of additional tightening to reinforce the action of stress exerted by the elastic members on the jaws during braking, acceleration or deceleration of the coil whose mandrel is carried on the spindle.
  • the spindles and the mandrel therefore continue to rotate at the same speed, both when the coil is braked during an unwinding at constant speed only when it is subject to accelerations or decelerations.
  • the complementary tightening means comprise a rod polygonal integral in rotation with the shaft, this rod extending inside the jaw holder and having faces longitudinal separated by edges, as well as means to allow limited relative rotation between the jaw holder and the rod so that each jaw can move between a normal clamping position in which it is supported against a predetermined longitudinal face of the rod when the coil is immobilized or turns at low torque and at constant speed, and an intensified clamping position in which it bears against an edge adjacent to the predetermined longitudinal face of the rod when the coil is braked, accelerated or slowed down.
  • the jaws exert on the internal surface of the mandrel a outward directed action which is obviously more large when they lean against the edges of the stem that when they lean against the longitudinal faces of this one.
  • the means allowing limited relative rotation between the jaw holder and the rod may have at least one longitudinal rib forming protrusion on the outer lateral surface of the shaft and extending in a longitudinal groove formed in the internal lateral surface of the jaw holder, the rib being located at equal distance from the longitudinal faces of the groove when the jaws are in their normal clamping position and leaning against one of the longitudinal faces of the groove when the jaws are in their clamping position intensified.
  • the means allowing limited relative rotation between the jaw holder and the rod include protrusions projecting from the face internal cover attached to the end of this part external end of the jaw holder, and bosses provided on the transverse faces of the jaws which are adjacent to the cover, the protrusions and bosses being positioned to provide space between them when the jaws are in their normal clamping position and to be in contact when the jaws are in their position intensified tightening.
  • the spindle according to the invention is further characterized in that that the elastic members are constituted by springs helical arranged in blind holes in the bit, the springs pressing against the rod while holding the jaws distant from it when the terminal part outside of the jaw holder is outside the mandrel, and being retracted into the blind holes allowing the jaws to lean directly against the rod when the part outer end of the jaw holder is inside the chuck.
  • the present invention also relates to a machine for winding and / or unwinding a strip material, comprising two pins insertable into a mandrel on which the material strip forms a coil, at least one of the two pins having the characteristics defined above.
  • the paper strip is wound on a cardboard core 1 and forms a coil 2 supported by two coaxial pins 3 whose free ends are turned towards each other and located in the end parts of the mandrel 1.
  • the pins 3 are carried by two parallel arms 4 displaceable in translation along a tree not shown extending horizontally between the two uprights 5 of the frame of the machine.
  • the shaft which is parallel to pins 3, allows bring the two arms closer together or farther apart and to adapt their distance to the width of the strip of paper to roll up or unwind.
  • the pins 3 are rotatably mounted on the two arms 4 and can be rotated by means of command not shown. They have an active part axially displaceable under the control of a drive member 6. More specifically, the drive members 6 are provided for retract the active parts of the pins in the arms, so to extract these parts out of the chuck of the bcbine, or for take them out of the arms, in order to introduce them into the mandrel of a new coil.
  • Two braking devices 7 which will be discussed below are also provided to brake the coil 2 supported by the two pins 3.
  • the pins 3 each have a shaft 8 connected to the device corresponding braking 7, a tubular jaw holder 9 having an external terminal part 10 and a terminal part internal 11 threaded on the shaft 8, four jaws 12 housed in longitudinal slots 13 formed in the part external terminal 10 of the jaw holder 9, elastic members 14 urging the jaws 12 radially outwards, and retaining means 15, 16 provided at the two ends of the jaw 12 to prevent them from coming out of the grooves longitudinal 13 when the active part of the jaw holder 9 is out of the chuck.
  • the shaft 8 is hollow and bears, in the vicinity of its end which is opposite to the jaw holder 9, the rotary part of the corresponding braking device 7. This being of classic design, it will not be described in detail here. We will simply indicate that its rotating part has a disc 17 located between two fixed linings 18 and that these are intended to be applied against the disc by two fixed pistons 19 under the action of a pressurized fluid such only oil or compressed air.
  • the jaw holder 9 is integral in rotation with the shaft 8 while being axially movable thereon. His part external terminal 10 can indeed be introduced into the mandrel 1 or be extracted therefrom under the action of the organ corresponding motor 6 to be operated in the proper direction.
  • the means 15 which are located on the side of the outer end jaws are formed on the one hand by protuberances 15a adjacent to the periphery of the internal face of a cover 20 fixed to the free end of the jaw holder 9 and on the other hand by bosses 15b formed on the jaws of so as to be radially inside the protrusions 15a.
  • the means 16, which are located on the side of the internal end of the jaws, are constituted by pins 16a carried by the jaws and by notches 16b formed in the jaw holder 9 and in which the pins protrude.
  • the retaining means 15 and 16 prevent the jaw 12 to escape from the longitudinal slots 13 of the jaw holder when the terminal portion 10 of the latter is outside the chuck 1.
  • each of the pins according to the invention comprises complementary clamping means 21 intended for reinforce the action exerted by the elastic organs 14 on the jaws 12.
  • the means of clamping 21 include a square rod 22 integral in rotation of the shaft 8.
  • This rod one of the ends of which is threaded into the shaft 8 and the other end of which is practically in line with the free end of the jaw holder 9, has four longitudinal faces 23 separated by edges 24.
  • the clamping means 21 also comprise means 25 to allow limited relative rotation between the jaw holder 9 and the rod 22 so that each jaw 12 can be move between a normal clamping position in which it bears against a predetermined longitudinal face 23 of the rod 22 when the coil 2 is immobilized or turns at low torque and constant speed, and a position of intensified tightening in which it bears against a edge 24 adjacent to the predetermined longitudinal face 23 when the coil is braked, accelerated or slowed down.
  • the means 25 allowing limited relative rotation between the jaw holder 9 and the rod 22 include two ribs longitudinal 26 projecting from the lateral surface external of the shaft 8, these ribs being diametrically opposite and protruding into two longitudinal grooves 27 formed in the internal lateral surface of the jaw holder 9.
  • the ribs 26 are located equidistant from the faces longitudinal of the grooves 27 when the jaws 12 are in their normal tightening position, as shown in the figure 4. On the other hand, they lean against one of the faces longitudinal of the grooves 27 when the jaws 12 are in their tightening position intensified.
  • the means 25 allowing limited relative rotation between the jaw holder 9 and the rod 22 can have a structure different from that just described.
  • They could for example be made up of protuberances 15a projecting from the internal face of the cover 20 fixed to the free end of the jaw holder 9, and by the bosses 15b formed on the transverse faces of the jaws 12 which are adjacent to the cover.
  • the protrusions 15a and the bosses 15b constitute the retaining means 15 preventing the jaws 12 from escaping from the longitudinal slots 13 of the jaw holder. According to the invention, they could also have the function of authorizing only one rotation limited relative between the jaw holder 9 and the rod 22.
  • each protuberance 15a and the boss 15b associated with it should be positioned so that provide a reduced space between them when the jaws 12 are in their normal clamping position, in order to come up against against each other when the jaws 12 are in their intensified clamping position.
  • the cover 20 is fixed to the jaw holder 9 by four screws 28 and that it has a central bore 29 providing passage to a boss cylindrical 30 axially extending the square rod 21.
  • the elastic members 14 are constituted by helical springs arranged in blind holes 31 formed in the jaws 12. These springs lean against the longitudinal faces 23 of the rod square 22 while holding the jaws 12 away from it when the end portion 10 of the jaw holder is at the outside of the chuck. However, they are entirely retracted into the blind holes 31 allowing the jaws 12 to lean directly against the square rod 22 when the end part 10 is inside the mandrel.
  • the square rod 22 carries a ring 32 on which the jaw holder 9 is supported and which allows the latter remaining coaxial with the shaft 8 and the rod 22.
  • the jaw holder has four jaws. It goes without saying, however, that it would not go beyond the scope of the present invention if the pins had more or less jaws. he it was enough to use a polygonal rod having at least as many longitudinal faces as jaws.

Landscapes

  • Unwinding Webs (AREA)
  • Replacement Of Web Rolls (AREA)
  • Winding Of Webs (AREA)

Claims (5)

  1. Spreizbarer Spannkopf in einem Spannfutter (1) mit einer inneren zylindrischen Oberfläche, auf der eine Materialbahn, insbesondere aus Papier, auf einer Spule/Rolle aufgewickelt ist, wobei der Spannkopf eine Achse/Welle (8), die mit einer Bremsvorrichtung (7) verbunden ist, ein röhrenartiges Backenstück (9), das ein äußeres freies Endstück (10) und ein inneres Endstück (11) aufweist, das von der Achse/Welle getragen wird, aufweist, wobei das Backenstück aus einem Stück besteht und sich mit letzterer dreht, Spannbacken (12), die in Längsschlitze (13) eingesetzt sind, die in dem äußeren Endstück (10) des Backenstücks angeordnet sind, federnde Mittel (14), die die Spannbacken radial nach außen belasten, damit sie mit der Innenfläche des Spannfutters (1) in Kontakt kommen, wenn der Spannkopf in letzeres eingefügt wird, und Rückhaltemittel (15, 16), die an den Enden der Spannbacken vorgesehen sind, um letztere daran zu hindern, aus den länglichen Auskehlungen/Vertiefungen (13) auszutreten, wenn sich der Spannkopf außerhalb des Spannfutters befindet, beinhaltet, dadurch gekennzeichnet, dass es darüber hinaus zusätzliche Spannmittel (21) zur Verstärkung der Belastung, die von den federnden Mitteln (14) auf die Spannbacken (12) bei einer Bremsung, einer Beschleunigung oder einer Verzögerung der Spule/Rolle (2), die auf dem Spannfutter (1) geformt ist, ausgeübt wird, zusätzliche Spannmittel (21) beinhaltet, die eine vieleckige, aus einem Stück bestehende Stange (22), die sich mit der Achse/Wel e (8) dreht und sich in das Innere des Backenstücks erstreckt, und längliche Vorderseiten (23), die durch die Sperrvorichtungen (24) getrennt sind, beinhaltet, sowie Mittel (25; 15a, 15b) beinhaltet, um eine relativ eingeschränkte Drehung zwischen dem Backenstück und der Stange zuzulassen, damit sich jede Spannbacke (12) zwischen einer normalen Spannposition, bei der sie gegen einer längliche, vorbestimmte Fläche (23) der Stange zur Anlage kommt, wenn die Spule/Rolle (2) zum Stillstand gekommen ist, oder sich mit geringfügigem Drehmoment und mit konstanter Geschwindigkeit dreht, und einer verstärkten Spannposition, bei der sie gegen eine Sperrvorrichtung (24) zur Anlage kommt, die an die vorbestimmte längliche Fläche der Stange angrenzt, wenn die Spule/Rolle (2) gebremst, beschleunigt oder verlangsamt wird, verschieben kann.
  2. Spannkopf gemäß des Patentanspruchs 1, dadurch gekennzeichnet, dass die Mittel (25), die eine relativ eingeschränkte Drehung zwischen den Backenstück (9) und der Stange (22) zulassen, aus mindestens einer länglichen Rippe (26), die auf der äußeren seitlichen Fläche der Achse/Welle (8) hervorsteht und sich in eine längliche Vertiefung/Auskehlung (27) erstreckt, die in der seitlichen inneren Fläche des Backenstücks vorgesehen ist, bestehen, wobei die Rippe im gleichen Abstand zu den länglichen Flächen der Vertiefung/Auskehlung angeordnet ist, wenn sich die Spannbacken (12) in normaler Spannposition belinden und sich gegen eine der länglichen Flächen der Vertiefung/Auskehlung (27) abstützen, wenn sich die Spannbacken in verstärkter Spannposition befinden
  3. Spannkopf gemäß des Patentanspruchs 1, dadurch gekennzeichnet, dass die Mittel (15a, 15b), die eine relativ eingeschränkte Drehung zwischen dem Backenstück (9) und der Stange (22) zulassen, Ausstülpungen (15a), die auf der Innenfläche eines Deckels (20) hervorstehen, der am äußeren Endstück (10) des Backenstücks befestigt ist, und Buckel (15b) umfassen, die auf den querlaufenden Flächen der Spannbacken (12) vorgesehen sind, die an den Deckel angrenzen, wobei die Ausstülpungen und die Buckel in der Weise ausgebildet sind, dass sie zwischen sich Raum lassen, wenn sich die Spannbacken in normaler Spannposition befinden und in Kontakt sind, wenn sich die Spannbacken in verstärkter Spannposition befinden.
  4. Spannkopf gemäß irgendeinem der Patentansprüche 1 bis 3, dadurch gekennzeichnet, dass die federnden Mittel (14) durch die schraubenförmigen Federn ausgebildet sind, die in Blindlöchern (31) angeordnet s nd, die in den Spannbacken (12) angeordnet sind, wobei sich die Federn gegen die Stange (22) abstützen und die Spannbacken von ihr entfernt halten, wenn sich das äußere Endstück (10) des Backenstücks (9) außerhalb des Spannfutters (1) befindet und in die Blindlöcher eingefahren sind, damit sich die Spannbacken direkt gegen die Stange abstützen können, wenn sich das äußere Endstück des Backenstücks im Inneren des Spannfutters befindet.
  5. Maschine zum Aufrollen und/oder Abrollen einer Materialbahn, die zumindest zwei spreizbare Spannköpfe in einem Spannfutter (1) beinhaltet, auf dem die Materialbahn eine Rolle/Spule (2) ausbildet, dadurch gekennzeichnet, dass mindestens einer der Spannköpfe so ist, wie in irgendeinem der Patentansprüche 1 bis 4 definiert.
EP97400294A 1996-02-12 1997-02-10 Spreizbarer Spannkopf für den Wickelkern einer Materialbahn sowie solche Spannköpfe aufweisende Auf- bzw. Abwickelmaschine Expired - Lifetime EP0790209B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9601685 1996-02-12
FR9601685A FR2744709B1 (fr) 1996-02-12 1996-02-12 Broche inserable dans le mandrin d'une bobine de materiau en bande et machine a enrouler et/ou derouler comportant de telles broches

Publications (2)

Publication Number Publication Date
EP0790209A1 EP0790209A1 (de) 1997-08-20
EP0790209B1 true EP0790209B1 (de) 2001-11-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97400294A Expired - Lifetime EP0790209B1 (de) 1996-02-12 1997-02-10 Spreizbarer Spannkopf für den Wickelkern einer Materialbahn sowie solche Spannköpfe aufweisende Auf- bzw. Abwickelmaschine

Country Status (5)

Country Link
US (1) US5758841A (de)
EP (1) EP0790209B1 (de)
CA (1) CA2197402C (de)
DE (1) DE69708475T2 (de)
FR (1) FR2744709B1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6431492B1 (en) * 1999-10-27 2002-08-13 Zih Corp. Integrated adjustable core support and medium guide device
DE10331943A1 (de) * 2003-07-15 2005-02-17 Nexpress Solutions Llc Verfahren zum Wechseln einer Manschette an einem Zylinder und Zylinder mit einer Manschette
NL1026527C2 (nl) * 2004-06-30 2006-01-02 Ideepak Holding B V Inrichting voor het opblazen van kunststof zakken voor het in situ vormen van verpakkingsmateriaal.
US7128290B1 (en) 2004-07-06 2006-10-31 Brady Worldwide, Inc. Spool having a dual purpose cam
US7128291B1 (en) 2004-07-06 2006-10-31 Brady Worldwide, Inc. Spool having an extractor bar
EP3016898B1 (de) 2013-07-01 2017-03-15 Bobst Mex Sa Bremsvorrichtung einer bahnrolle
US9656487B2 (en) * 2015-10-13 2017-05-23 Intermec Technologies Corporation Magnetic media holder for printer
CN109160327A (zh) * 2018-08-06 2019-01-08 孙立强 一种pe卷膜的卷绕装置
CN111675006B (zh) * 2020-08-12 2020-12-11 佛山市帝益机械科技有限公司 一种捆扎胶带放卷装置
US11851298B2 (en) * 2021-05-28 2023-12-26 Renova S.R.L. Machine for producing cardboard

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US1492291A (en) * 1921-10-29 1924-04-29 Giovannoni Egisto Winder
US2053815A (en) * 1935-04-06 1936-09-08 Panthou Esther Varela De Bobbin for cinema films and the like
US2902232A (en) * 1955-05-16 1959-09-01 H G Weber & Company Inc Web tensioning control system
US3355121A (en) * 1966-10-13 1967-11-28 Sonoco Products Co Expansible chuck for tubular core
GB1294568A (en) * 1970-08-01 1972-11-01 Walmor Engineering Co Ltd Improvements in the mounting of reels on winding machines
GB1362788A (en) * 1970-09-18 1974-08-07 Masson Scott Thrissell Eng Ltd Stands for reels of paper
US3999721A (en) * 1975-03-19 1976-12-28 Electronic Engineering Company Of California Spindle hub
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US5628475A (en) * 1996-02-01 1997-05-13 Warnaar; Dirk B. Clamping arrangement for hollow objects with an end face

Also Published As

Publication number Publication date
CA2197402A1 (fr) 1997-08-13
DE69708475T2 (de) 2002-08-01
DE69708475D1 (de) 2002-01-10
FR2744709B1 (fr) 1998-04-17
US5758841A (en) 1998-06-02
FR2744709A1 (fr) 1997-08-14
CA2197402C (fr) 2007-08-07
EP0790209A1 (de) 1997-08-20

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