IT221774Z2 - EQUIPMENT TO Tear off a sheet of paper or the like along a pre-punched straight line that is essentially transversal - Google Patents
EQUIPMENT TO Tear off a sheet of paper or the like along a pre-punched straight line that is essentially transversalInfo
- Publication number
- IT221774Z2 IT221774Z2 ITMI910262U IT221774Z2 IT 221774 Z2 IT221774 Z2 IT 221774Z2 IT MI910262 U ITMI910262 U IT MI910262U IT 221774 Z2 IT221774 Z2 IT 221774Z2
- Authority
- IT
- Italy
- Prior art keywords
- rollers
- sheet
- faces
- tear
- paper
- Prior art date
Links
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
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
- B65H35/10—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with devices for breaking partially-cut or perforated webs, e.g. bursters
Landscapes
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Details Of Cutting Devices (AREA)
Abstract
Viene descritta un'apparecchiatura atta ad effettuare lo strappo di un foglio di carta o simili lungo una retta pre-perforata essenzialmente trasversale al foglio.L'apparecchiatura comprende due coppie di rulli a cilindri contrapposti in cui i cilindri sono sagomati in modo da presentare due facce piane atte a delimitare un passaggio per il libero transito del foglio, mentre le restanti facce sono di forma essenzialmente bombata cosicchè, quando i rulli vengono fatti ruotare, dette facce entrano in contatto tra di loro entrando in presa con il foglio suddetto.La velocità di rotazione di entrambe le coppie di rulli è la medesima ma, secondo il trovato, la sezione trasversale dei cilindri dei rulli a valle della zona pre-perforata è di valore maggiore di quella dei cilindri dei rulli a monte di detta zona così che la velocità periferica dei primi è maggiore di quella dei secondi e questo comporta la nascita di un'azione di trazione sul foglio durante il tempo di contatto di quest'ultimo con le facce bombate dei cilindri suddetti comportando lo strappo della zona perforata.An apparatus suitable for tearing a sheet of paper or the like along a pre-perforated straight line essentially transverse to the sheet is described. The apparatus comprises two pairs of opposed cylinder rollers in which the cylinders are shaped so as to have two plane faces suitable for delimiting a passage for the free transit of the sheet, while the remaining faces are of an essentially rounded shape so that, when the rollers are made to rotate, said faces come into contact with each other entering into contact with the aforementioned sheet. the rotation of both pairs of rollers is the same but, according to the invention, the cross section of the rollers of the rollers downstream of the pre-punched area is of greater value than that of the rollers of the rollers upstream of said area so that the speed peripheral of the former is greater than that of the latter and this entails the birth of a traction action on the sheet during the contact time of this last with the rounded faces of the aforementioned cylinders, causing the tear of the perforated area.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000262 IT221774Z2 (en) | 1991-03-27 | 1991-03-27 | EQUIPMENT TO Tear off a sheet of paper or the like along a pre-punched straight line that is essentially transversal |
DE69115823T DE69115823T2 (en) | 1990-10-03 | 1991-10-02 | Apparatus for high-speed stacking of sheets of paper or a continuous band with tear-off along pre-perforated lines |
EP19910202571 EP0479385B1 (en) | 1990-10-03 | 1991-10-02 | Apparatus for the high speed piling up of paper sheets or continuous band with, tearing separation along preperforation lines |
AT91202571T ATE132111T1 (en) | 1990-10-03 | 1991-10-02 | APPARATUS FOR HIGH-SPEED STACKING OF PAPER SHEETS OR A CONTINUOUS BELT WITH TEAR-OFF ALONG PRE-PERFORATED LINES |
US07/771,137 US5230453A (en) | 1990-10-03 | 1991-10-03 | Apparatus for high speed of stacking either sheets or forms as a continuous web or separated sheets with tear splitting along prepierced lines |
EP92200824A EP0506193A1 (en) | 1991-03-27 | 1992-03-21 | Device for providing tear in a paper sheet, or the like, along a substantially transversal pre-punched straight line |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000262 IT221774Z2 (en) | 1991-03-27 | 1991-03-27 | EQUIPMENT TO Tear off a sheet of paper or the like along a pre-punched straight line that is essentially transversal |
Publications (3)
Publication Number | Publication Date |
---|---|
ITMI910262V0 ITMI910262V0 (en) | 1991-03-27 |
ITMI910262U1 ITMI910262U1 (en) | 1992-09-27 |
IT221774Z2 true IT221774Z2 (en) | 1994-10-20 |
Family
ID=11358392
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT000262 IT221774Z2 (en) | 1990-10-03 | 1991-03-27 | EQUIPMENT TO Tear off a sheet of paper or the like along a pre-punched straight line that is essentially transversal |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0506193A1 (en) |
IT (1) | IT221774Z2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10055867C2 (en) * | 2000-11-10 | 2003-11-13 | Roland Man Druckmasch | Variable folder |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4131272A (en) * | 1977-06-13 | 1978-12-26 | Paper Converting Machine Company | Method and apparatus for separating a continuous stream of connected business forms into exact count zig-zag folded stacks |
DE3205801A1 (en) * | 1982-02-18 | 1983-08-25 | BÖWE Maschinenfabrik GmbH, 8900 Augsburg | Tearer |
IT215262Z2 (en) * | 1988-11-21 | 1990-09-11 | Meschi Ind Grafica | STRAPPERINA FOR TAPES OF MATERIALS IN SHEETS SUCH AS PAPER TAPES. |
-
1991
- 1991-03-27 IT IT000262 patent/IT221774Z2/en active IP Right Grant
-
1992
- 1992-03-21 EP EP92200824A patent/EP0506193A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
ITMI910262U1 (en) | 1992-09-27 |
ITMI910262V0 (en) | 1991-03-27 |
EP0506193A1 (en) | 1992-09-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted |