Safety system and a corresponding printing press

• US 20060231746A1
• Filed: 04/12/2006
• Published: 10/19/2006
• Est. Priority Date: 04/15/2005
• Status: Active Grant

• Current Assignee: Goss International Montataire, S.A. (Goss Systèmes Graphiques Nantes SA)
• Original Assignee: GOSS International Montataire SA French Corporation
• Inventors: Caulier, Yves
• Granted Patent: US 7,908,969 B2
• Time in Patent Office: Days
• US Class Current: 250/221
• CPC Class Codes: B41F 33/0018 Protection means against injury to the operator
• CPC Class Codes: F16P 3/00 Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body F16P5/00 takes precedence

Abstract

The present invention relates to a safety system comprising at least two stationary detector elements each defining a respective first safety zone, said first safety zones not coinciding, a moving detector element, and a control unit connected to the stationary detector elements. The control unit is adapted to detect the presence of the moving detector element in one of the first safety zones. The invention is applicable to rotary printing presses.

Claims

1. A safety system of the type comprising at least two stationary detector elements each defining a respective first safety zone, the first safety zones not coinciding, the system comprising:

a moving detector element adapted to co-operate with the two stationary detector elements; and

a control unit connected at least to the stationary detector elements and adapted to detect the presence of the moving detector element in one of the first safety zones.

2. A safety system according to claim 1, further comprising a presence sensor adapted to detect the presence of an object, in particular a human being, in a second safety zone.

3. A safety system according to claim 2, wherein the presence sensor is constrained to move with the moving detector element.

4. A safety system according to claim 2, wherein the presence sensor is stationary relative to the stationary detector element, and wherein the second safety zone overlaps one of the first safety zones, at least in part.

5. A safety system according to claim 1, further comprising a warning device, and wherein the control system is adapted to trigger the warning device when the moving detector element enters into at least one of the first safety zones.

6. A safety system according to claim 5, wherein the warning device comprises audible and/or light-emitting warning members, and wherein a warning member is associated with each first safety zone.

7. A safety system according to claim 5, further comprising a presence sensor adapted to detect the presence of an object, in particular a human being, in a second safety zone, and wherein the control unit is adapted to trigger the presence sensor when the moving detector element enters into one of the first safety zones and is adapted to verify the presence of an object in the second safety zone on entering into the first safety zone.

8. A safety system according to claim 1, wherein the moving detector element is movable along a predetermined path, and wherein the stationary detector elements are disposed along the predetermined path in such a manner that the moving detector member is adapted to pass through the first safety zones.

9. A printing press with at least two print units and an engagement device for engaging a print strip in the press, the engagement device comprising a transport member for transporting the end of the strip through the press, the press being provided with a safety system according to claim 8, the moving detector element being secured to the transport member and the stationary detector elements being disposed along the path of the transport member in such a manner that the moving detector element passes in succession through the first safety zones during displacement along