FR2391944A1 - DEVICE FOR REMOVING SHEETS ONE BY ONE FROM A STACK, ON A PRINTING MACHINE OR SIMILAR MACHINE - Google Patents
DEVICE FOR REMOVING SHEETS ONE BY ONE FROM A STACK, ON A PRINTING MACHINE OR SIMILAR MACHINEInfo
- Publication number
- FR2391944A1 FR2391944A1 FR7815636A FR7815636A FR2391944A1 FR 2391944 A1 FR2391944 A1 FR 2391944A1 FR 7815636 A FR7815636 A FR 7815636A FR 7815636 A FR7815636 A FR 7815636A FR 2391944 A1 FR2391944 A1 FR 2391944A1
- Authority
- FR
- France
- Prior art keywords
- suction
- stack
- machine
- sheet
- vacuum
- 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.)
- Granted
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
- B65H3/00—Separating articles from piles
- B65H3/08—Separating articles from piles using pneumatic force
- B65H3/0808—Suction grippers
- B65H3/0883—Construction of suction grippers or their holding devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
Abstract
Ce dispositif est du type à ventouses déplaçables entre le haut de la pile et un système de transport de feuilles. Selon l'invention, les ventouses sont branchées en série et contiennent chacune un piston 2 qui réduit l'orifice d'aspiration 18 dans le pied 4 par un embout 24 lorsqu'il est abaissé, contre un ressort 3, par la dépression accrue dans l'espace à vide 22 au moment de l'aspiration de la feuille 23 contre la surface de base 13. L'abaissement du piston réduit la quantité d'air aspirée après l'application de la feuille contre la ventouse et libère en même temps la transmission de la dépression par la tubulure 7 et le tuyau 20 à la ventouse 1' suivante.This device is of the type with suction cups movable between the top of the stack and a sheet transport system. According to the invention, the suction cups are connected in series and each contain a piston 2 which reduces the suction port 18 in the foot 4 by a nozzle 24 when it is lowered, against a spring 3, by the increased vacuum in the vacuum space 22 at the time of the suction of the sheet 23 against the base surface 13. The lowering of the piston reduces the amount of air sucked after the application of the sheet against the suction cup and at the same time releases the transmission of the vacuum through the pipe 7 and the pipe 20 to the following suction cup 1 '.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2723663A DE2723663C3 (en) | 1977-05-25 | 1977-05-25 | Device for separating sheets of a stack of sheets for a printing press and the like. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2391944A1 true FR2391944A1 (en) | 1978-12-22 |
FR2391944B1 FR2391944B1 (en) | 1982-02-05 |
Family
ID=6009858
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7815636A Granted FR2391944A1 (en) | 1977-05-25 | 1978-05-25 | DEVICE FOR REMOVING SHEETS ONE BY ONE FROM A STACK, ON A PRINTING MACHINE OR SIMILAR MACHINE |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS53147371A (en) |
DE (1) | DE2723663C3 (en) |
FR (1) | FR2391944A1 (en) |
GB (1) | GB1598114A (en) |
IT (1) | IT1095907B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4804173A (en) * | 1985-06-03 | 1989-02-14 | Roberts Corporation | Method and apparatus for moving individual sheets from a stack of sheets |
JPH01174911U (en) * | 1988-05-31 | 1989-12-13 | ||
DE3938556C2 (en) * | 1989-11-21 | 1996-09-05 | Heidelberger Druckmasch Ag | Suction head for the feeder of a sheet-fed rotary printing machine |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1085893B (en) * | 1958-10-14 | 1960-07-28 | Georg Spiess Dr Ing | Transport device with suction nozzle for separating the sheets in sheet feeders |
-
1977
- 1977-05-25 DE DE2723663A patent/DE2723663C3/en not_active Expired
-
1978
- 1978-05-23 GB GB21333/78A patent/GB1598114A/en not_active Expired
- 1978-05-23 IT IT23709/78A patent/IT1095907B/en active
- 1978-05-25 FR FR7815636A patent/FR2391944A1/en active Granted
- 1978-05-25 JP JP6163178A patent/JPS53147371A/en active Granted
Non-Patent Citations (1)
Title |
---|
NV700/64 * |
Also Published As
Publication number | Publication date |
---|---|
GB1598114A (en) | 1981-09-16 |
DE2723663A1 (en) | 1978-11-30 |
IT1095907B (en) | 1985-08-17 |
JPS53147371A (en) | 1978-12-22 |
DE2723663B2 (en) | 1980-11-13 |
IT7823709A0 (en) | 1978-05-23 |
JPS5617260B2 (en) | 1981-04-21 |
DE2723663C3 (en) | 1981-08-06 |
FR2391944B1 (en) | 1982-02-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
ST | Notification of lapse |