Web infeed device for rotary printing presses

• US 20040003731A1
• Filed: 07/05/2002
• Published: 01/08/2004
• Est. Priority Date: 07/05/2002
• Status: Active Grant

• Current Assignee: Shanghai Electric (Group) Corporation (City of Shanghai)
• Original Assignee: Heidelberger Druckmaschinen Ag
• Inventors: Zlatin, Lev, Boucher, Ronald Henry
• Granted Patent: US 6,948,427 B2
• Time in Patent Office: Days
• US Class Current: 101/228
• CPC Class Codes: B41F 13/03 Threading webs into printing machines

Abstract

A web infeed device for rotary printing presses includes a pointed nose piece having concave side portions. The flexible infeed element is received in a guide, and driving elements are provided for driving the infeed element along the guide.

Claims

1. A web infeed device for rotary printing presses comprising:

an infeed element having a flexible section and a pointed nose piece having concave side portions;

a guide, the flexible infeed element being received in the guide; and

driving elements for driving the infeed element along the guide.

2. The device as recited in claim 1 wherein the flexible section includes a flat bandshaped metal piece.

3. The device as recited in claim 1 wherein the flexible section includes holes, and balls located in the holes.

4. The device as recited in claim 1 wherein the nose piece is made of rigid material.

5. The device as recited in claim 1 wherein the nose piece has a cut out at a rear end for receiving the flexible section.

6. The device as recited in claim 1 wherein the nose piece has a curved rear section.

7. The device as recited in claim 1 wherein the nose piece is symmetrical about a longitudinal plane, the flexible section defining the longitudinal plane.

8. The device as recited in claim 1 wherein the nose piece is fully symmetrical about a longitudinal axis.

9. A web infeed device for rotary printing presses comprising:

an infeed element having a flexible band-shaped section and a rigid pointed nose piece connected to the flexible section;

a guide, the flexible infeed element being received in the guide; and

driving elements for driving the indfeed element along the guide.

10. The device as recited in claim 9 wherein the flexible section is metal.

11. The device as recited in claim 9 wherein the flexible section includes holes, and balls located in the holes.

12. The device as recited in claim 9 wherein the nose piece has a cut out at a rear end for receiving the flexible section.

13. The device as recited in claim 9 wherein the nose piece has a curved rear section.

14. The device as recited in claim 9 wherein the nose piece is symmetrical about a longitudinal plane, the flexible section defining the longitudinal plane.

15. The device as recited in claim 9 wherein the nose piece is fully symmetrical about a longitudinal axis.

16. A web infeed device for rotary printing presses comprising:

an infeed element having a first flexible section, a second flexible section and a connecting piece having concave side portions connecting the first flexible section to the second flexible section;

a guide, the flexible infeed element being received in the guide; and

driving elements for driving the infeed element along the guide.

17. The web infeed device as recited in claim 16 wherein the infeed element has a nose piece having concave side portions connected to the first flexible section.