EP0382574B1 - Matériel en forme de bande pour une machine fonctionnant avec des bandes - Google Patents

Matériel en forme de bande pour une machine fonctionnant avec des bandes Download PDF

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Publication number
EP0382574B1
EP0382574B1 EP90301444A EP90301444A EP0382574B1 EP 0382574 B1 EP0382574 B1 EP 0382574B1 EP 90301444 A EP90301444 A EP 90301444A EP 90301444 A EP90301444 A EP 90301444A EP 0382574 B1 EP0382574 B1 EP 0382574B1
Authority
EP
European Patent Office
Prior art keywords
web
sprocket
readily deformable
hole
sprocket hole
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
EP90301444A
Other languages
German (de)
English (en)
Other versions
EP0382574A3 (fr
EP0382574A2 (fr
Inventor
John Elliott
Brian Philip Ashbee
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.)
Individual
Original Assignee
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
Publication of EP0382574A2 publication Critical patent/EP0382574A2/fr
Publication of EP0382574A3 publication Critical patent/EP0382574A3/fr
Application granted granted Critical
Publication of EP0382574B1 publication Critical patent/EP0382574B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D5/00—Sheets united without binding to form pads or blocks
    • B42D5/02—Form sets
    • B42D5/023—Continuous form sets

Definitions

  • This invention relates to web material for use in web handling machines. More particularly, the present invention relates to web materials adapted to be driven through a machine by means of sprocket wheels having projecting sprocket pins which engage in sprocket holes provided along the longitudinal margins of the web.
  • Such webs are commonly used in a wide range of machines, including, by way of example, printers, plotters, and sign making machines.
  • the most common industry standard for the pitch of the sprocket holes is half-inch (12.7mm) although a pitch of quarter-inch (6.25mm) is used in some applications.
  • sprocket wheels have a plurality of equi-angularly spaced sprocket pins providing a sprocket pin pitch corresponding to the regular sprocket hole pitch referred to above.
  • one or more additional sprocket pins are provided on the sprocket wheels.
  • One such machine is illustrated in GB-B-2146311. It will be readily appreciated that if one or more additional sprocket pins are provided on a sprocket wheel having a set of standard half-inch pitch sprocket pins, web material having standard half-inch pitch sprocket holes will not have a sprocket hole corresponding to each and every sprocket pin. If the additional sprocket pin is provided equi-distant from two sprocket pins of the standard half-inch pitch set, web material having a quarter-inch sprocket hole pitch may be run satisfactorily through the machine. If, however, the additional pin is located otherwise than equi-distant between two adjacent half-inch pitch pins, web material with a quarter-inch pitch will not provide a sprocket hole in register with each sprocket pin.
  • the material of the web is relatively easily torn, and is intended to run continuously in one direction through the machine, the fact that there may not be a sprocket hole corresponding to the additional sprocket pins may not present a problem since the additional sprocket pin will simply result in local tearing of the web. If, however, the material of the web is relatively tough, for example if it is self adhesive vinyl material mounted on a release paper backing and/or the web must run backwards and forwards through the machine, it has been found that the material will not feed satisfactory through a machine unless means are provided for accommodating the additional sprocket pin or pins.
  • web material can be provided with additional sprocket holes adapted specifically to mate with a particular sprocket wheel configuration.
  • a web material specifically adapted to mate with the sprocket wheel configuration of GB-B-2146311 is disclosed in that specification.
  • such a specifically designed web will not, of course, be suitable for machines having other arrangements of additional pins.
  • a web of material adapted to be driven through a machine by sprocket wheels having projecting sprocket pins wherein the web has a series of equally spaced main sprocket holes along each edge thereof and a secondary sprocket hole between each adjacent pair of main sprocket holes, and wherein the web on at least one side of each secondary sprocket hole is readily deformable whereby if, during passage of the web through a machine, a sprocket pin registers with a readily deformable zone, the web material will deform to accommodate the sprocket pin and permit smooth feeding of the web.
  • the main sprocket holes will be located at the standard half-inch pitch.
  • the secondary sprocket holes are located centrally between each adjacent pair of main sprocket holes whereby the web has a uniform sprocket hole pitch of quarter-inch.
  • Such web material may, of course, readily be fed through standard half-inch or quarter-inch pitch sprocket drives. It should be appreciated, however, that the secondary sprocket holes may be located other than centrally between the main sprocket holes.
  • the web material is rendered readily deformable on at least one side of each secondary sprocket hole so that the secondary sprocket hole and readily deformable zone together span the whole area in which a secondary sprocket pin may be encountered. If, as will usually be the case, the secondary sprocket hole is located equi-distant from each adjacent main sprocket hole, a readily deformable zone is provided on each longitudinal side of each secondary sprocket hole, each readily deformable zone extending from its associated secondary sprocket hole towards the adjacent main sprocket hole a distance sufficient to accommodate all possible positions of secondary sprocket pin.
  • readily deformable zones are also provided on each lateral side of each secondary sprocket hole whereby secondary sprocket pins located out of line with the main sprocket pins may be accommodated.
  • the readily deformable zones are formed by either through cuts or lines of weakness extending radially outwardly from each secondary sprocket hole. It has been found that four such cuts located at 90° relative to each other, and each extending at 45° to the longitudinal direction of the web give particularly satisfactory results. Such a pattern of cuts forms at each longitudinal and lateral side of each secondary sprocket hole a substantially triangular zone of web material which can be readily flexed out of the plane of the web material upon encountering a sprocket pin. At the same time, it has been found that the web material is not weakened by the provision of the cuts to an extent which affects adversely the operational characteristics of the web.
  • the illustrated web 1 may be of any material, and may, for example, comprise self-adhesive sheet vinyl material mounted on a release sheet backing. Such materials are commonly used for the production of vinyl signs as described, for example, in GB-B-2146311 referred to above.
  • main sprocket holes 2 are provided along each longitudinal margin of the web.
  • the main sprocket holes 2 are at a uniform half-inch (12.7mm) pitch, and accordingly the web material may run through any machine having a standard half-inch pitch sprocket drive.
  • main sprocket holes 2 Located equi-distant between each adjacent pair of main sprocket holes 2 are secondary sprocket holes 3. It will be appreciated that the combination of main sprocket holes and secondary sprocket holes together provide sprocket holes at a quarter-inch pitch thereby allowing the web material to be run through a machine having a standard quarter-inch pitch sprocket drive.
  • each secondary sprocket hole 3 has cuts 4-7 extending radially outwardly therefrom.
  • the cuts are angularly spaced at 90° from each other, and each cut extends at an angle of 45° to the longitudinal and transverse directions of the web.
  • the cuts 4-7 are preferably through cuts, but this is not essential provided that the required readily deformable regions are formed.
  • a readily deformable region 8 is formed on each longitudinal side of each secondary sprocket hole 3
  • a readily deformable region 9 is formed on each lateral side of each secondary sprocket hole 3.
  • Each readily deformable region 8 is bounded by a portion of the periphery of the secondary sprocket hole 3, a portion of the periphery of the adjacent main sprocket hole 2, two of the cuts, and by imaginary lines 10 which connect the outer ends of the cuts to the adjacent main sprocket hole 2.
  • Each readily deformable portion 9 is bounded by a portion of the periphery of the secondary sprocket hole 3, by a pair of cuts, and by a somewhat curved line 10A connecting the outer extremities of the relevant pair of cuts.
  • the additional sprocket pin will register with one of the readily deformable zones 8,9 as the web is run through the machine. This will result in the readily deformable zone hinging out of the plane of the web to accommodate the additional sprocket pin. It has been found that with the arrangement illustrated the web is not weakened sufficiently to impair normal feeding of the web through a machine.

Landscapes

  • Advancing Webs (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Unwinding Webs (AREA)
  • Replacement Of Web Rolls (AREA)

Claims (7)

  1. Bande de matière adaptée pour être entraînée à travers une machine par des roues à picots ayant des picots saillants, dans laquelle la bande présente une série de trous de picots principaux espacés axialement le long de chacun de ses bords, et un trou de picot secondaire entre chaque paire de trous de picots principaux adjacents, et dans laquelle la bande est facilement déformable au moins d'un côté de chaque trou de picot secondaire, de sorte que si, pendant le passage de la bande à travers la machine, un picot est en coïncidence avec une zone facilement déformable, la matière de la bande se déforme pour admettre le picot et permettre un entraînement régulier de la bande.
  2. Bande de matière selon la revendication 1, dans laquelle les trous de picots secondaires sont placés au milieu entre chaque paire de trous de picots principaux adjacents, de sorte que la bande présente un pas de trous de picots uniforme.
  3. Bande de matière selon 1 ou la revendication 2, dans laquelle la matière de la bande est rendue facilement déformable au moins d'un côté de chaque trou de picot secondaire, de sorte que le trou de picot secondaire et la zone facilement déformable couvrent ensemble toute la région dans laquelle un picot secondaire peut se trouver.
  4. Bande de matière selon une quelconque des revendications précédentes, dans laquelle une zone facilement déformable est prévue sur chaque côté longitudinal de chaque trou de picot secondaire, chaque zone facilement déformable s'étendant de son trou de picot secondaire vers le trou de picot principal adjacent sur une distance suffisante pour admettre toutes les positions longitudinales possibles d'un picot secondaire.
  5. Bande de matière selon une quelconque des revendications précédentes, dans laquelle des zones facilement déformables sont aussi prévues sur chaque côté latéral de chaque trou de picot secondaire, de sorte que des picots secondaires placés hors d'alignement avec les picots principaux peuvent être admis.
  6. Bande de matière selon une quelconque des revendications précédentes, dans laquelle les zones facilement déformables sont formées par des entailles ou par des lignes de faiblesse qui s'étendent radialement vers l'extérieur à partir de chaque trou de picot secondaire.
  7. Bande de matière selon la revendication 6, dans laquelle il y a quatre entailles de ce type placées à 90° l'une de l'autre et dont chacune s'étend à 45° de la direction longitudinale de la bande.
EP90301444A 1989-02-10 1990-02-12 Matériel en forme de bande pour une machine fonctionnant avec des bandes Expired - Lifetime EP0382574B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8903047 1989-02-10
GB8903047A GB2228924B (en) 1989-02-10 1989-02-10 Web material for web handling machine

Publications (3)

Publication Number Publication Date
EP0382574A2 EP0382574A2 (fr) 1990-08-16
EP0382574A3 EP0382574A3 (fr) 1991-05-02
EP0382574B1 true EP0382574B1 (fr) 1994-06-15

Family

ID=10651492

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90301444A Expired - Lifetime EP0382574B1 (fr) 1989-02-10 1990-02-12 Matériel en forme de bande pour une machine fonctionnant avec des bandes

Country Status (4)

Country Link
EP (1) EP0382574B1 (fr)
AT (1) ATE107237T1 (fr)
DE (1) DE69009788D1 (fr)
GB (1) GB2228924B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2238526B (en) * 1989-11-29 1994-01-19 Allprint Graphics Ltd Web for web handling apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR592650A (fr) * 1924-11-12 1925-08-06 Perfectionnement aux bandes de papier entraînées sur des mécanismes à l'aide de perforations
DE1946643A1 (de) * 1969-08-14 1971-03-18 Schnug Walter Endlosformulare,Endlossaetze,Schnelltrennsaetze und endlose Kohlepapierbahnen mit gelochten Fuehrungsraendern
US4834276A (en) * 1983-08-05 1989-05-30 Gerber Scientific Products, Inc. Web loading and feeding system, related web construction and method and apparatus for making web

Also Published As

Publication number Publication date
GB2228924A (en) 1990-09-12
GB2228924B (en) 1993-04-21
DE69009788D1 (de) 1994-07-21
EP0382574A3 (fr) 1991-05-02
EP0382574A2 (fr) 1990-08-16
ATE107237T1 (de) 1994-07-15
GB8903047D0 (en) 1989-03-30

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