Device for separating multi-layered, transversely perforated continuous strips having carbon-paper strips located between the web layers into individual sheets

• US 4,145,035 A
• Filed: 04/27/1977
• Issued: 03/20/1979
• Est. Priority Date: 04/27/1976
• Status: Expired due to Term

• Current Assignee: Rena-Buromaschinenfabrik GmbH & Company
• Original Assignee: Rena-Buromaschinenfabrik GmbH & Company
• Inventors: Moser, Erich
• Primary Examiner(s): Burr, Edgar S.
• Assistant Examiner(s): Heinz, A.
• Application Number:
  US05/791,492
• Time in Patent Office: 692 Days
• Field of Search: 270/52-52.5, 270/58, 101/224, 101/226, 101/227, 225/100, 225/97, 225/99, 225/101
• US Class Current: 270/52.11
• CPC Class Codes: B41L 1/12 Severing webs to obtain single sheets or forms, e.g. by cutting, by bursting
• CPC Class Codes: Y10T 225/35 Work-parting pullers [bursters]

Abstract

A device for separating multi-layered strips of paper having carbon paper provided therebetween. The separating device cooperates with the transversely located perforations in the continuous strip to drive the continuous strip through the separating device. The continuous strip also has transversely extending serrations therein which are severed in the separating device so that the continuous strip is separated into individual sheets. Each station in the separating device has a pair of inlet rollers and a pair of outlet rollers with the outlet rollers being driven at a speed which is greater than the speed of the inlet rollers so that the continuous strip is effectively pulled so that the transversely extending serrations will become severed and the individual sheets will be collected at an outlet.

Claims

1. A device for separating a continuous, transversely perforated multi-layered strip into individual strips, comprising:

a base frame; and

a plurality of strip handling means mounted on said base frame for processing said multi-layered strip, each of said strip handling means including (1) a separator device for separating an individual continuous and transversely perforated strip from said multi-layered strip, (2) form bursting means for effecting a severing of said individual continuous strip into individual sheets subsequent to passing through said separator device, and (3) storage means for storing said individual sheets therein.

2. The device according to claim 1, wherein said plurality of strip handling means are vertically aligned on said base frame.

3. The device according to claim 1, wherein each of said plurality of strip separator handling means further includes a carbon paper wind-up device for winding up carbon paper layers between the individual layers of said multi-layered strip.

4. The device according to claim 3, including common drive means on said base frame for driving said plural separator devices and said carbon paper wind-up devices.

5. A device for separating a continuous, transversely perforated multi-layered strip into individual strips, comprising:

a base frame; and

a plurality of strip handling means mounted on said base frame for processing said multi-layered strip, each of said strip handling means including (1) a separator device for separating an individual continuous and transversely perforated strip from said multi-layered strip, (2) form bursting means for effecting a severing of said individual continuous strip into individual sheets, (3) storage means for storing said individual sheets therein, and (4) a carbon-paper wind-up device for winding up carbon-paper layers between the individual layers of said multi-layered strip;

each of said form bursting means on said base frame including an inlet roller pair and an outlet roller pair, said outlet roller pair being driven at a greater peripheral speed than said inlet roller pair, a roof-shaped tearing edge arranged between said inlet and said outlet roller pairs over which said single continuous strip passes, the speed differential of said inlet and said outlet roller pairs rendering said strip taut as said transverse perforations pass over said tearing edge and effecting a severing of said strip into said individual sheets.

6. The device according to claim 5, wherein at least one roller of at least one of said inlet and said outlet roller pair is constructed as a narrow rubber wheel.

7. The device according to claim 5, wherein said outlet roller pairs of each separator device are arranged one above the other on an adjustable frame and includes adjusting means for adjusting the position of said adjustable frame with respect to said base frame.

8. The device according to claim 7, wherein said adjustable frame is connected to said base frame through securable parallel guide rods.

9. The device according to claim 7, wherein said storage means includes compartments connected to and movable with said adjustable frame and are arranged adjacent said outlet roller pairs.

10. The device according to claim 9, including common drive means for driving said outlet roller pair arranged on said adjustable frame.

11. The device according to claim 5, wherein each inlet roller of said plural separator devices and each wind-up device is driven through a slip clutch.

12. The device according to claim 11, wherein each inlet roller pair includes a first shaft supporting one of said inlet rollers and a gear mounted on a second shaft and operatively connected to said first shaft through said slip clutch for facilitating the movement of said single strip and a freewheeling device located between said gear and said second shaft for limiting the speed of rotation of said second shaft so that it can never exceed the speed of rotation of said gear thereby rendering said slip clutch ineffective during a severing operation when the paper pull accelerates said second shaft.