US3743156A - Take-off mechanism for loosely withdrawing a web of sheeting from a driven roller - Google Patents

Take-off mechanism for loosely withdrawing a web of sheeting from a driven roller Download PDF

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Publication number
US3743156A
US3743156A US00265998A US3743156DA US3743156A US 3743156 A US3743156 A US 3743156A US 00265998 A US00265998 A US 00265998A US 3743156D A US3743156D A US 3743156DA US 3743156 A US3743156 A US 3743156A
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US
United States
Prior art keywords
roller
take
driven roller
pinion
fixedly mounted
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
US00265998A
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English (en)
Inventor
F Schwarze
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.)
KraussMaffei Extrusion GmbH
Original Assignee
Hermann Berstorff Maschinenbau GmbH
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
Priority claimed from DE19712132893 external-priority patent/DE2132893C/de
Application filed by Hermann Berstorff Maschinenbau GmbH filed Critical Hermann Berstorff Maschinenbau GmbH
Application granted granted Critical
Publication of US3743156A publication Critical patent/US3743156A/en
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
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/02—Advancing webs by friction roller

Definitions

  • ABSTRACT A take-off mechanism, for loosely withdrawing a web of material from a driven roller, particularly an embossing roller, comprising friction wheels engaged with end portions of the driven roller and having internal toothing meshed with a rotatable fixed pinion, a further rotatable fixed pinion meshed with the pinion and with a gear wheel rotatably mounted on a non-rotatable shaft, the gear wheel being drivably connected to a take-off roller rotatably mounted on said shaft and of smaller diameter than the driven roller and the mechanism being so proportioned and disposed that the peripheral speed of the take-off roller is equal to the peripheral speed of the driven roller.
  • the invention relates to a take-off mechanism for loosely withdrawing a web of sheeting moved by a driven roller, for example an embossing roller.
  • a takeoff mechanism for loosely withdrawing a web of material from a driven roller, comprising a hollow take-off roller having a smaller diameter than the driven roller and mounted for rotation about a non-rotatable shaft, friction wheels engaged with end portions of the driven roller, each friction wheel having internal toothing meshed with a fixedly mounted pinion, which pinion is rotatable about its axis, and is also meshed with a further fixedly mounted pinion which is rotatable about its axis and is meshed with a gear wheel rotatably mounted on said shaft, the gear wheel being drivably connected to the take-off roller and the mechanism being so proportioned and disposed that the peripheral speed of the take-off roller is equal to the peripheral speed of the driven roller.
  • the working surface of the take-up roller that is to say the surface over which the web of sheeting is passed, does not contact the surface of the driven roller, but the peripheral speed of the take-up roller is nevertheless equal to that of the driven roller.
  • the pinion and the further pinion are mounted in plates which bound the friction wheels in one direction.
  • FIG. 1 is an end view of a take-off mechanism according to the invention.
  • FIG. 2 is a fragmentary vertical section taken on line 11-11 of FIG. 1.
  • a web of sheeting F is fed to an embossing roller 1, which is rotated in the direction indicated by arrow A.
  • the sheeting F which is extremely thin and sensitive to tension, is removed from the embossing roller 1 by a take-off roller 2 which is of smaller diameter than the embossing roller 1. It is at the place of withdrawal that the sheeting F is frequently torn when using conventional take-off rollers.
  • the take-off roller 2 rotates in the direction indicated by arrow B on a shaft 3 and can be moved towards or away from the embossing roller 1. In the embodiment illustrated this is done by arranging the shaft 3 so that it can be displaced and arrested within slots 4 in mounting plates 5 one of which is provided at each end of the take-off roller 2.
  • the shaft 3 is mounted stationary and the roller 2 is rotatable thereon.
  • Friction wheels 6 are mounted for rotation about the shaft 3 and are each drivably engaged with the embossing roller 1. Each friction wheel 6 has internal toothing 7, extending around the inner periphery thereof.
  • Each internal toothing 7 is engaged by a respective pinion 8 which is fixedly but rotatably mounted in a plate 9 fixed to the stationary shaft 3, a shaft of the pinion 8 being mounted in the plate 9 by a needle bearing 10.
  • the pinion 8 engages a further pinion 11 (FIG. 1) which is also fixedly but rotatably mounted in the plate 9.
  • the rotary movement of the further pinion 11 is transmitted to a gear wheel 12 which is connected by bushings 13, 14 to the take-off roller 2.
  • the gear wheel 12 is mounted so as to rotate about the shaft 3, and when it does so its rotary movement is transmitted to the take-off roller 2.
  • the internal toothing 7, the pinions 8, l1 and the gear wheel 12 are so designed that the rollers l, 2 have the same peripheral speed.
  • the take-off roller 2 operates as follows:
  • the rotary movement of the driven embossing roller 1 is transmitted to the take-off roller 2 by the two friction wheels 6. If, as in the embodiment illustrated and as viewed in FIG. 1, the embossing roller 1 is turning clockwise, then the two friction wheels 6 and thus the corresponding internal toothing 7 will turn anticlockwise. This movement of the internal toothing 7 is transmitted to the pinion 8 which is thereby rotated an ti-clockwise. Rotation of the pinion 8 rotates the further pinion ll clockwise and the further pinion 11 rotates the gear wheel 12 anti-clockwise.
  • the gear wheel 12, by means of the bushings 13, 14, rotates the takeoff roller 2 anti-clockwise as indicated by arrow B in FIG. 1.
  • the function of the further pinion 11 is thus to cause the rollers 1', 2 to rotate-in opposite directions.
  • the pinions 8 and 11 and the gear wheel 12 is within the knowledge of a man skilled in the art and it is therefore unnecessary to describe in detail how the step up and step down ratios must be selected in order to ensure that the same peripheral speed will always be obtained despite the different diameters of the rollers l, 2.
  • a take-off mechanism for loosely withdrawing a web of material from a driven roller, comprising a hollow take-off roller having a smaller diameter thanthe driven roller; a non-rotatable shaft; means mounting the take-off roller for rotation on said shaft; friction wheels engaged with end portions of said driven roller; internal toothing for each friction wheel; and, at each end of said take-off roller, a fixedly mounted pinion mounted for rotation about its axis and meshed with said internal toothing; a further fixedly mounted pinion rotatable about its axis and meshed with said fixedly mounted pinion; a gear wheel rotatably mounted on wherein said driven roller is an embossing roller.

Landscapes

  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Advancing Webs (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Treatment Of Fiber Materials (AREA)
US00265998A 1971-07-02 1972-06-26 Take-off mechanism for loosely withdrawing a web of sheeting from a driven roller Expired - Lifetime US3743156A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712132893 DE2132893C (de) 1971-07-02 Abzugswalze zum spannungslosen Abziehen einer von einer angetriebenen Walze bewegten Folienbahn

Publications (1)

Publication Number Publication Date
US3743156A true US3743156A (en) 1973-07-03

Family

ID=5812452

Family Applications (1)

Application Number Title Priority Date Filing Date
US00265998A Expired - Lifetime US3743156A (en) 1971-07-02 1972-06-26 Take-off mechanism for loosely withdrawing a web of sheeting from a driven roller

Country Status (7)

Country Link
US (1) US3743156A (https=)
JP (1) JPS5032356B1 (https=)
BE (1) BE785699A (https=)
DE (1) DE2132893B1 (https=)
FR (1) FR2145158A5 (https=)
GB (1) GB1371175A (https=)
IT (1) IT960850B (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0431740A1 (en) * 1989-10-26 1991-06-12 Btg International Limited Poly(vinylphosphonic acid) glass ionomer cement

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3511449A (en) * 1968-08-07 1970-05-12 Data Packaging Corp Tape cartridge with speed changer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3511449A (en) * 1968-08-07 1970-05-12 Data Packaging Corp Tape cartridge with speed changer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0431740A1 (en) * 1989-10-26 1991-06-12 Btg International Limited Poly(vinylphosphonic acid) glass ionomer cement

Also Published As

Publication number Publication date
BE785699A (fr) 1972-10-16
DE2132893B1 (de) 1972-06-08
JPS5032356B1 (https=) 1975-10-20
IT960850B (it) 1973-11-30
GB1371175A (en) 1974-10-23
FR2145158A5 (https=) 1973-02-16

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