US3346159A - Apparatus for threading a web into a plant for processing said web - Google Patents

Apparatus for threading a web into a plant for processing said web Download PDF

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Publication number
US3346159A
US3346159A US492017A US49201765A US3346159A US 3346159 A US3346159 A US 3346159A US 492017 A US492017 A US 492017A US 49201765 A US49201765 A US 49201765A US 3346159 A US3346159 A US 3346159A
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US
United States
Prior art keywords
web
rolls
chains
path
plant
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
US492017A
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English (en)
Inventor
Winkler Karl
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.)
Voestalpine AG
Voest AG
Original Assignee
Voestalpine 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 Voestalpine AG filed Critical Voestalpine AG
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Publication of US3346159A publication Critical patent/US3346159A/en
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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
    • B65H20/00—Advancing webs
    • B65H20/02—Advancing webs by friction roller
    • 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
    • B65H20/16—Advancing webs by web-gripping means, e.g. grippers, clips
    • 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
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/52—Auxiliary process performed during handling process for starting
    • B65H2301/522—Threading web into machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/14—Roller pairs
    • B65H2404/147—Roller pairs both nip rollers being driven

Definitions

  • roll feeders In plants for a continuous processing of web stock, such as metal or plastics material webs, roll feeders or the like are provided in most cases between the uncoiler and the take-up device. These roll feeders serve for moving the web and in most cases also for threading a new web into the plant. In some cases, such roll feeders cannot be provided, at least along part of the path, because a damage of the web surface by contact with the rolls must be avoided. For instance, roll feeders cannot be provided after a coating, particularly an enamel coating, has been deposited on the web, because the resulting web has a most sensitive surface until the coating has been set in a drying oven, which is in many cases very long.
  • the web is fed through the drying oven or the like by means of roll feeders which succeed this oven, or by the take-up device. It is difiicult to thread the web as far as to the feeder which acts on the finished web to advance the same.
  • a threading apparatus has already been disclosed which consists of two endless ropes, which are disposed on opposite sides of the .path of the Web and in which a clamp for the leading end of the web is secured to each of said ropes.
  • the-movement of the web must be uniform. For this reason, theclamping of the leading end of the web to the two pulling ropes must not be effected when the web is stopped but when it is moving. At the.
  • the known threading apparatus has the disadvantage that the leading end of the web must be clamped by hand to the pulling ropes. This operation requires two workers, who walk along the web and must take care to complete the clamping operation before the entrance to the drying oven. This operation requires a certain time so that a certain minimum space is needed before the entrance to the drying oven and adds to the overall length of the installation.
  • the means for fixing the jaw-type clamps to the pulling ropes which are not guided between the reversing pulleys, may give rise to difliculties.
  • the web may sag in the middle or may move up and down during the threading so that the deposited enamel coat ing or the like, which has not yet set, coalesces at some point and the coating becomes irregular.
  • a change in the width of the web requires an exchange of the jawtype or other clamps. This results in a loss of time.
  • the invention is based on a threading device which comprises longitudinal pulling means, which are disposed on opposite sides of the path of the web and preferably endless, and clamp means, which are secured to said pulling means and grip the end of the web, and is essentially characterized in that the clamp means comprise two superimposed rolls, which are connected by two common bearing brackets to the two longitudinal pulling means, consisting of track-guided chains, at least one of said rolls being eccentrically mounted to form an eccentric clamp, and carrying a crank arm or the like, a stationary run-up cam being provided for a pivotal movement of the crank arm or the like in the clamping sense, and a further run-up cam being provided, if desired, at the takeup end of the plant and serving to effect a ivotal movement of the crank arm in the opposite sense, the chain driving means being adapted to be started automatically when the leading end of the web to be threaded passes through between the rolls, and to be stopped automatically when this leading end of the web reaches the take-up end
  • the incoming web end is then automatically clamped with the aid of the run-up cams so that any need for manual work is eliminated as well as the space previously required for manipulation before the drying oven or the like.
  • the clamping rolls reliably grip the web throughout its width, and the track-guided chains ensure that the web is threaded without vibration. As a result, the uniformity of the coating is no longer adversely affected.
  • the laterally disposed jaw-type clamps have been replaced by clamping rolls which extend throughout the width of the web, it is possible to clamp stock of dilferent widths without any need for changing the threading apparatus.
  • the chains consist of side bar chains having rollers on the pins and guided in laterally open channel members, each directed through the path of the web are provided in known manner for starting and stopping the chain driving means and comprise photoelectric cells for closing or interrupting the drive circuit when the light ray is interrupted by the arriving band end.
  • these light barriers are disposed slightly behind the pair of clamping rollers in the initial position and before the runup cam and at the take-up end of the plant they are provided behind the run-up cam so that the chain driving means are started as soon as the leading end of the web has passed through between the rolls and the chain driving means are stopped as soon as the clamping rolls have opened. It is not essential to provide at the trailing end of the plant a run-up cam for opening the clamping rolls.
  • the resulting eccentric clamp may be effected by a rotation of one roll with the aid of an inserted crank handle.
  • FIGS. 1 and 2 are sectional views taken on line I-I of FIG. 2 transversely to the path of the web, and
  • FIG. 2 is a transverse sectional view taken on through the rolls on line II-II of FIG. 1.
  • endless longitudinal pulling means are provided on opposite sides of the path of the web in that portion thereof which contains no roll feeders, for instance adjacent to the drying oven.
  • These longitudinal pulling means comprise side bar chains 2, which are guided in laterally open channel members 1.
  • the chains comprise rollers 3 on pins 4.
  • An angle member 5 is secured to each chain and carries an upright bearing bracket 6.
  • Two rolls 7 are eccentrically mounted in the two opposed bearing brackets and are coupled by a spur gear train 9 mounted on their journals 8, 8a.
  • One journal 8 of the upper roll carries a crank arm 10 provided with a roller 10a.
  • a stationary run-up cam 11a is provided for engagement by the roller 10a of the crank arm 10.
  • the crank arm 10 is pivotally moved downwardly so that the rolls 7 are rotated and owing to their eccentric mounting approach each other and clamp the web material 13 between them.
  • the axes of the journals 8, 8a are rearwardly spaced from the roll axes proper with respect to the pulling direction and the rolls 7 are symmetrical with respect to the plane which is defined by the web 13.
  • a light barrier 14, 15 serves for starting the chain driving means.
  • the processed web material which has been coated or provided with an enamel layer so that it has a highly sensitive surface before it has set, is advanced by means of a roll feeder, which is disposed before the coating station.
  • the leading end of the web enters between the two rolls 7.
  • the photoelectric cell 15 starts the chain driving means.
  • the chain driving means corresponds to the velocity of the web.
  • the movement of the chain causes by means of the run-up cam 11 and the crank arm 10 a closing of the eccentric clamp which consists of the two rolls 7 and these rolls pull the web through the succeeding part of the plant, for instance, the drying oven.
  • a roll feeder is provided at the take-up end of the plant and serves for advancing the web when it has passed through said feeder.
  • Another light barrier for stopping the chain driving means is disposed behind this feeder.
  • the clamp can now be opened by means of a crank handle, which can be fitted on the square 16. Then the web can be fed to the take-up device.
  • a second run-up cam may be provided before the light barrier to effect an automatic opening of the clamp.
  • Apparatus for threading a web into a plant for moving said web in a predetermined direction along a predetermined path and for processing said web during such movement, said apparatus comprising two chain tracks extending on opposite sides of said path in the longitudinal direction thereof, two chains movable along said path in the direction of movement of said web, each of said chains being guided by one of said tracks, two bearing brackets, each of said bearing brackets being secured to one of said chains, two superimposed clamping rolls having opposite ends mounted in said bearing brackets, one of said rolls being eccentrically mounted and carrying a radial projection, said chains being stopped after a predetermined movement of said rolls along said path, a stationary run-up cam mounted in the path of said radial projection for engagement thereby so as to move said eccentrically mounted roll against the other roll, and starting means for automatically starting movement of said chains in response to the passage of the leading end of said web between said rolls.
  • said chains are side bar chains comprising pins and rollers mounted on said pins, said tracks are laterally open channel members, each chain carries a depending angle member, said bearing brackets are upright and each of said brackets is secured to one of said angle members.

Landscapes

  • Advancing Webs (AREA)
US492017A 1964-10-12 1965-10-01 Apparatus for threading a web into a plant for processing said web Expired - Lifetime US3346159A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT864864A AT248364B (de) 1964-10-12 1964-10-12 Einziehvorrichtung für Bandmaterial bearbeitende Anlagen

Publications (1)

Publication Number Publication Date
US3346159A true US3346159A (en) 1967-10-10

Family

ID=3607362

Family Applications (1)

Application Number Title Priority Date Filing Date
US492017A Expired - Lifetime US3346159A (en) 1964-10-12 1965-10-01 Apparatus for threading a web into a plant for processing said web

Country Status (3)

Country Link
US (1) US3346159A (de)
AT (1) AT248364B (de)
DE (1) DE1967007U (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3459352A (en) * 1967-10-30 1969-08-05 William L Ingram Retriever for the broken ends of strip material in an enclosed tank
US3995553A (en) * 1974-01-22 1976-12-07 Maschinenfabrik Augsburg-Nurnberg Ag Paper web threading apparatus for rotary printing presses
US4070965A (en) * 1974-05-06 1978-01-31 Maschinenfabrik Wifag Sequential rotary printing press web threading means
US4167150A (en) * 1977-12-05 1979-09-11 H. H. Robertson Company Sheet metal ribbon coating apparatus
US4210682A (en) * 1977-12-05 1980-07-01 H. H. Robertson Company Sheet metal ribbon coating method
US4285759A (en) * 1979-11-19 1981-08-25 E. I. Du Pont De Nemours And Company Apparatus for stripping a cover sheet
US5249373A (en) * 1991-01-29 1993-10-05 W. R. Grace & Co.-Conn. Web threading system
US5788803A (en) * 1996-10-16 1998-08-04 Interfic, Inc. Corrugated paperboard manufacturing apparatus with controllable preheating
US5837974A (en) * 1996-10-16 1998-11-17 Interfic, Inc. Corrugated paperboard manufacturing apparatus with board profile monitoring and related methods
US5847362A (en) * 1996-10-16 1998-12-08 Interfic, Inc. Corrugated paperboard manufacturing apparatus providing controllable heat and related methods
US5902502A (en) * 1996-10-16 1999-05-11 Interfic, Inc. Corrugated paperboard manufacturing apparatus and related methods
US20060169394A1 (en) * 2001-12-07 2006-08-03 Jorn Seevers Apparatus and method for the helical winding of a reinforcing element onto a pneumatic tire blank
US10184897B2 (en) 2014-04-04 2019-01-22 Packaging Corporation Of America System and method for determining an impact of manufacturing processes on the caliper of a sheet material

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT354390B (de) * 1977-12-20 1980-01-10 Voest Ag Einziehvorrichtung fuer eine bandbearbeitungs- anlage
AT368041B (de) * 1979-03-07 1982-08-25 Voest Alpine Ag Einziehvorrichtung fuer eine bandbearbeitungsanlage
JPH02276750A (ja) * 1989-03-10 1990-11-13 Sms Schloeman Siemag Ag 特に帯状金属の帯板材料処理設備中の帯板材料に対する搬送系

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH382439A (de) * 1960-12-07 1964-09-30 Fahrni Fred Verfahren und Vorrichtung zur Herstellung von in einem Arbeitsgang in einer Heisspresse gepressten und mindestens einseitig oberflächenbeschichteten Pressplatten

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH382439A (de) * 1960-12-07 1964-09-30 Fahrni Fred Verfahren und Vorrichtung zur Herstellung von in einem Arbeitsgang in einer Heisspresse gepressten und mindestens einseitig oberflächenbeschichteten Pressplatten

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3459352A (en) * 1967-10-30 1969-08-05 William L Ingram Retriever for the broken ends of strip material in an enclosed tank
US3995553A (en) * 1974-01-22 1976-12-07 Maschinenfabrik Augsburg-Nurnberg Ag Paper web threading apparatus for rotary printing presses
US4070965A (en) * 1974-05-06 1978-01-31 Maschinenfabrik Wifag Sequential rotary printing press web threading means
US4167150A (en) * 1977-12-05 1979-09-11 H. H. Robertson Company Sheet metal ribbon coating apparatus
US4210682A (en) * 1977-12-05 1980-07-01 H. H. Robertson Company Sheet metal ribbon coating method
US4285759A (en) * 1979-11-19 1981-08-25 E. I. Du Pont De Nemours And Company Apparatus for stripping a cover sheet
US5249373A (en) * 1991-01-29 1993-10-05 W. R. Grace & Co.-Conn. Web threading system
US5788803A (en) * 1996-10-16 1998-08-04 Interfic, Inc. Corrugated paperboard manufacturing apparatus with controllable preheating
US5837974A (en) * 1996-10-16 1998-11-17 Interfic, Inc. Corrugated paperboard manufacturing apparatus with board profile monitoring and related methods
US5847362A (en) * 1996-10-16 1998-12-08 Interfic, Inc. Corrugated paperboard manufacturing apparatus providing controllable heat and related methods
US5902502A (en) * 1996-10-16 1999-05-11 Interfic, Inc. Corrugated paperboard manufacturing apparatus and related methods
US20060169394A1 (en) * 2001-12-07 2006-08-03 Jorn Seevers Apparatus and method for the helical winding of a reinforcing element onto a pneumatic tire blank
US10184897B2 (en) 2014-04-04 2019-01-22 Packaging Corporation Of America System and method for determining an impact of manufacturing processes on the caliper of a sheet material

Also Published As

Publication number Publication date
AT248364B (de) 1966-07-25
DE1967007U (de) 1967-08-24

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