SE504109C2

SE504109C2 - Methods and apparatus for transferring sheets

Info

Publication number: SE504109C2
Application number: SE9500884A
Authority: SE
Inventors: Ulf Rosen
Original assignee: Samhall Ab
Priority date: 1995-03-13
Filing date: 1995-03-13
Publication date: 1996-11-11
Also published as: EP0732282A3; EP0732282B1; SE9500884L; EP0732282A2; DE69603527D1; SE9500884D0; DE69603527T2

Abstract

In a method of transferring a file (2) of sheets of paper, plastic or the like uppermost in a sheet stack (1) to a treatment station, for instance to a vibratory table, an edge (6) of the file (2) is gripped and swung upwardly and rearwardly through 180 DEG therewith rolling the file (2) over a part of the top surface of the stack (1). The file (2) is then rolled back and transferred to the next treatment station. <IMAGE>

Description

15 20 30 35 504 109 2 munstycken för utblåsning av luft mellan arken. 15 20 30 35 504 109 2 nozzles for blowing air between the sheets.

Som framgår av fig. 1 gripes en kant 6 av lägget 2 och svänges uppåt-bakåt i 180° och dras enligt pilen 7 under rullning av lägget 2 över en del av stapelns 1 övre yta.As can be seen from Fig. 1, an edge 6 of the leg 2 is gripped and swung upwards and backwards at 180 ° and is pulled according to the arrow 7 while rolling the leg 2 over a part of the upper surface of the stack 1.

Därpå återföres manöverarmen 4, och lägget 2 rullas i motsatt riktning tillbaka över arkstapelns övre yta. Vid denna åter- gående rörelse blåses luft in från sidorna, så att man får in luft mellan samtliga ark. Eventuellt kläms motstående arkkant 10 fast under denna återgående rörelse. Det mothållsdon som är avsett att hålla fast arken vid motstående kant 10 sym- boliseras av vikten 8 i fig. 2. Manöverarmen 4 föres då enligt pilen 9.Then the control arm 4 is returned, and the leg 2 is rolled back in the opposite direction over the upper surface of the sheet stack. During this repetitive movement, air is blown in from the sides, so that air is obtained between all the sheets. Optionally, the opposite sheet edge 10 is clamped during this return movement. The abutment device which is intended to hold the sheets at the opposite edge 10 is symbolized by the weight 8 in Fig. 2. The operating arm 4 is then moved according to the arrow 9.

Som anges ovan manövreras gripdonet med servohjälp, varvid operatören fattar runt ett styrhandtag på manöverarmen 4 och för den i önskad riktning. Hela anordningen kan hänga antingen i en vridkran, en travers eller löpa i spår.As stated above, the gripper is operated with servo assistance, the operator grasping around a guide handle on the operating arm 4 and moving it in the desired direction. The entire device can be hung either in a crane, a traverse or run in tracks.

Den beskrivna rörelsen åstadkommer en skjuvning mellan arken i lägget 2. Vid fasthållning av den övre ut- skjuvade delen av lägget och ett delvis återförande av rull- ningsrörelsen skiljer sig arken och släpper in önskad luft mellan sig.The movement described causes a shear between the sheets in the calf 2. When holding the upper extended part of the calf and a partial return of the rolling movement, the sheets separate and let in the desired air between them.

Efter återrullningen enligt pilen 9 kan lägget antingen dras direkt till behandlingsstationen eller så kan den genom en ny rullning vändas och dras över till behand- lingsstationen. För minskning av friktionen blåses lämpligen luft in under lägget 2.After the rewind according to arrow 9, the leg can either be pulled directly to the treatment station or it can be turned by a new roll and pulled over to the treatment station. To reduce friction, air is suitably blown in under the leg 2.

Claims

10 15 20 25 30 35 3 504 109 PATENT REQUIREMENTS

Method of transferring a tray (2) with sheets of paper, plastic or the like at the top of a stack of sheets (1) to a treatment station, for example a shaking table, characterized in that an edge (6) of the tray (2) is gripped and swung upwards and backwards at 180 ° and is pulled while rolling the leg (2) over a part of the upper surface of the stack (1), whereupon the leg (2) is rolled back and transferred to a treatment station.

2. A method according to claim 1, characterized in that air is introduced from the sides during the roll-back.

3. A method according to claim 1 or 2, characterized in that the opposite edge (10) of the calf (2) is held during the roll-back.

4. A method according to any one of claims 1 - 3, characterized by the roll-back station after the roll-back. of the leg (2) is transferred directly to the

5. A method according to any one of claims 1 - 3, characterized in that the leg (2) is turned by new rolling, before it is transferred to the treatment station.

6. A method according to claim 4 or 5, characterized in that air is blown in under the leg (2) during the transfer to the treatment station.

Device for applying the method according to one of Claims 1 to 6, characterized by at least one clamping device (3) which is pivotally 180 ° pivotably connected to a substantially vertical control arm (4) about a horizontal axis (5) and arranged to grasp an edge (6) of a leg (2), which operating arm (4) is movable in the horizontal plane, driven by means of servo.

Device according to claim 7, characterized in that the clamping device (3) is provided with air nozzles for blowing air between the sheets.