US3734371A - Device for regulating the tension of a moving web - Google Patents

Device for regulating the tension of a moving web Download PDF

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Publication number
US3734371A
US3734371A US00157485A US3734371DA US3734371A US 3734371 A US3734371 A US 3734371A US 00157485 A US00157485 A US 00157485A US 3734371D A US3734371D A US 3734371DA US 3734371 A US3734371 A US 3734371A
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US
United States
Prior art keywords
web
rollers
roller
tension
regulating
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
US00157485A
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English (en)
Inventor
G Dorfel
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.)
Lenox Machine Co Inc
Original Assignee
Ahlstrom Corp
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 Ahlstrom Corp filed Critical Ahlstrom Corp
Application granted granted Critical
Publication of US3734371A publication Critical patent/US3734371A/en
Assigned to LENOX MACHINE COMPANY, INC. reassignment LENOX MACHINE COMPANY, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: A. AHLSTROM OSAKEYHITO
Assigned to LENOX MACHINE COMPANY, INC., A CORP OF MA reassignment LENOX MACHINE COMPANY, INC., A CORP OF MA ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: A. AHLSTROM OSAKEYHTIO
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
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • 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
    • B65H23/06—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle
    • B65H23/10—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle acting on running web

Definitions

  • ABSTRACT Foreign Application Priority Data An equalizer which includes several rollers placed June 30, 1970 Finland ..1846/70 to eeeh other one Side of the Web in the transversal direction of the web, the rollers being attached [52] U.S. Cl ..226/109, 226/195 with be rings b tween he branches of bearing forks [51] Int. Cl. ..B65h 23/08 which can be essentially fitted perpendicular and ad- [58] Field of Search ..242/75 .2, 75.3; justed in relation to the web, and possibly also includ- 226/195, 109 ing a spreader, fitted in front thereof is disclosed.
  • This invention relates to a device for regulating the tension of a moving web, such as paper or plastic web or the like, in, for example, reeling machines.
  • the tension (tautness) of the web may not be the same at different points on the web, which easily results in folding of the web.
  • Socalled spreaders have been used to eliminate this folding.
  • the spreaders may be rollers, for example, bent into the shape of an arc, over which the web runs touching only part of the circumference of the rollers.
  • a roller like this spreads the web and partly eliminates its tendency to fold, but owing to the torsness of the roller it is not capable of eliminating local deviations in the tension of the web.
  • the present invention provides a device for regulating the tension of the web over its entire width, with which at the same time it is possible to eliminate local differences of tension in the transversal direction of the web.
  • equalizing and spreading means are placed downstream of the spreading means and includes a plurality of transversally aligned rollers on one side of the web, one bearing fork for each roller and being substantially perpendicular and adjustable in relation to the web each roller being mounted in bearings between the furcations of the forks.
  • the controls of each roller have been connected to the same closed pressure system, and a pressure gauge has possibly also been connected to it.
  • a local increase in the tension of the web at one roller makes the roller press the other rollers lower, and a pressure medium flows evenly from this control to the controls of the other rollers.
  • the load of one roller is thus evenly divided amongst the other rollers and no overloading is created.
  • the pressure gauge always measures the real load of the rollers.
  • FIG. 1 is a schematic side view of the paper cutterreeler provided with a device according to the invention.
  • FIG. 2 shows a partly cut side view of one application of the invention
  • FIG. 3 is a section along line B-B in FIG. 2.
  • FIG. 1 shows one typical application of the invention in a paper cutter-reeler (longitudinal cutter), in which 1 is the paper web, 2 is the reels formed in the reeler, 3 is the reel to be unwound, 4 and 5 are the longitudinal cutting blades, 6 and 8 are guide rollers, 7 is an equalizer (the structure of which has been shown in more detail in FIGS. 2 and 3).
  • Equalizer 7 consists of rollers 32 situated next to each other, which have been attached with bearings so that they are rotatable to supporting plates 10, which have been pivoted to hearing boxes 12 attached to transversal beam 11.
  • the pivoting movement of the supporting plates is limited by an adjustable limiting device, in which spindle 13 limits its movement in one direction and socket 14 in the other.
  • the supporting plates are connected with each other by plate 15, to
  • the liquid pressure in liquid space 20 is proportional to the force with which the roller loads the web, that is, proportional to the tension of the web, the liquid pressure can be used as the comparison figure when the tension of the web is regulated.
  • rollers 6 and 8 are so-called spreaders.
  • the width of the rollers of the equalizer is smaller than the diameter of a roller.
  • the spaces between the rollers are as small as possible, for example, less than 10 mm.
  • a device for regulating the tension of a moving web over the entire width of the web comprising the combination of fluid pressure operated equalizing means a plurality of transversally aligned rollers on one side of the web, one bearing fork for each roller and being substantially perpendicular and adjustable in relation to the web each roller being mounted in bearings between the furcations of the forks; and spreading means before the equalizing means in the direction of movement of the web, said equalizer means including an elastic membrane acted upon by fluid pressure to the bearing fork and the frame to create a contact line of desired contour between the rollers and the web.
  • the device of claim 2 further comprising means for connecting the control means to a common closed pressure system provided with a pressure gauge.

Landscapes

  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Replacement Of Web Rolls (AREA)
  • Winding Of Webs (AREA)
US00157485A 1970-06-30 1971-06-28 Device for regulating the tension of a moving web Expired - Lifetime US3734371A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI701846A FI47078C (fi) 1970-06-30 1970-06-30 Laite liikuvan radan kireyden säätämiseksi.

Publications (1)

Publication Number Publication Date
US3734371A true US3734371A (en) 1973-05-22

Family

ID=8506280

Family Applications (1)

Application Number Title Priority Date Filing Date
US00157485A Expired - Lifetime US3734371A (en) 1970-06-30 1971-06-28 Device for regulating the tension of a moving web

Country Status (10)

Country Link
US (1) US3734371A (enExample)
JP (1) JPS5437259B1 (enExample)
AT (1) AT311788B (enExample)
CA (1) CA944783A (enExample)
ES (1) ES392609A1 (enExample)
FI (1) FI47078C (enExample)
FR (1) FR2100081A5 (enExample)
GB (1) GB1336398A (enExample)
SE (1) SE376590B (enExample)
SU (1) SU396870A3 (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4116195A1 (de) * 1991-05-17 1992-11-19 Sucker & Franz Mueller Gmbh Zettelschlichtanlage
US20010040097A1 (en) * 2000-03-28 2001-11-15 Kozo Arao Web conveying apparatus, and apparatus and method for electrodeposition using web conveying apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3283982A (en) * 1965-01-27 1966-11-08 Inta Roto Machine Company Inc Web tension control means
US3386679A (en) * 1965-02-04 1968-06-04 Yoder Co Multiple strip tensioning device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3283982A (en) * 1965-01-27 1966-11-08 Inta Roto Machine Company Inc Web tension control means
US3386679A (en) * 1965-02-04 1968-06-04 Yoder Co Multiple strip tensioning device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4116195A1 (de) * 1991-05-17 1992-11-19 Sucker & Franz Mueller Gmbh Zettelschlichtanlage
US20010040097A1 (en) * 2000-03-28 2001-11-15 Kozo Arao Web conveying apparatus, and apparatus and method for electrodeposition using web conveying apparatus
US6752915B2 (en) * 2000-03-28 2004-06-22 Canon Kabushiki Kaisha Web conveying apparatus, and apparatus and method for electrodeposition using web conveying apparatus

Also Published As

Publication number Publication date
DE2132224A1 (de) 1972-01-05
SE376590B (enExample) 1975-06-02
CA944783A (en) 1974-04-02
AT311788B (de) 1973-12-10
SU396870A3 (enExample) 1973-08-29
GB1336398A (en) 1973-11-07
DE2132224B2 (de) 1976-11-18
FI47078B (enExample) 1973-05-31
JPS5437259B1 (enExample) 1979-11-14
FI47078C (fi) 1973-09-10
FR2100081A5 (enExample) 1972-03-17
ES392609A1 (es) 1974-07-01

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Legal Events

Date Code Title Description
AS Assignment

Owner name: LENOX MACHINE COMPANY, INC., LENOX, MA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:A. AHLSTROM OSAKEYHITO;REEL/FRAME:004180/0678

Effective date: 19830318

AS Assignment

Owner name: LENOX MACHINE COMPANY, INC., A CORP OF MA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:A. AHLSTROM OSAKEYHTIO;REEL/FRAME:004333/0444

Effective date: 19841115