DE19752342B4 - Protective device on printing machines - Google Patents

Abstract

guard on printing presses for a device associated with a cylinder and a cylinder educated, over the cylinder width extending danger spot, designed as a two-part, between the device (2) and the cylinder (1) arranged protective device (7; 8), wherein the at least one part (7 or 8) of the protective device (7; 8) is designed to be movable and one at unsecured danger place the printing machine shut down Switch (14) is assigned, wherein the protective device (7; 8) when decommissioning or removal of the device (2) into a danger spot (10) locking and commissioning or insertion of the device (2) the hazard site (10) securing and the site of action between Cylinder (1) and device (2) releasable position can be brought.

Description

The The invention relates to a protective device on printing presses for a by a cylinder and a device associated with the cylinder, for example a cylinder cleaning device, formed danger point.

It is known a protection device for a danger point formed by a cylinder and a device ( DE 295 05 373 U1 which is arranged in front of the cylinder upstream of the device and thus conceals the danger point. During maintenance work on the device, the protective device is folded away and shut down the press by means of a switch. The maintenance of the device takes place in the printing press.

adversely is there that at Maintenance work on the device the printing press shut down must and Thus, high downtimes occur, the machine utilization deteriorate.

task The invention is the provision of a protective device for securing one formed by a cylinder and an associated device Hazard spot, which requires maintenance of the facility or maintenance the facility outside the Printing machine without machine downtime and without reduction of the protective function the protective device permits.

According to the invention Task solved by the patent claim. In the subclaims are expedient embodiments listed.

The solution according to the invention below to an embodiment described in more detail.

The Drawing shows a cylinder with associated equipment in active and inactive position.

In the drawing is a cylinder 1 who is in touch with a facility 2 a danger point 10 forms, represented; cylinder 1 and furnishings 2 are part of a printing press.

The danger spot 10 is identical to the contact point of the device 2 on the cylinder 1 , The danger point / exposure point must protect the operating personnel in the operating state of the device 2 (Active position) and in the non-operating state (inactive position) be reliably protected against interference by the operating personnel and still the action of the device 2 on the cylinder 1 allow.

The device 2 is formed in the illustrated embodiment as a cylinder cleaning device and essentially contains a pressure element 3 , which is movable in and against the cylinder direction (indicated by double arrow) and two wash cloth rolls 4 ; 5 having, wherein the washcloth 6 from the first washcloth roll 4 over the pressure element 3 to the second wash cloth roll 5 to be led.

The device 2 is removable from the printing press and can thus be maintained outside the printing press. For the purpose of removability is the cylinder cleaning device with a suspension element 9 equipped with a receiving element 11 corresponds in the printing press.

Between the device 2 and the cylinder 1 is a protective device 7 ; 8th arranged. The protective device 7 ; 8th consists of two parts, both parts are movable, ie pivotally arranged in the exemplary embodiment; It is also possible to form only a part of movable swiveling.

The protective device is in a first position - dashed representation - can be brought. In this position is the device 2 in an inactive position or is located outside the printing machine for maintenance purposes.

The movement into this position is done by the force of the springs 12 . 13 which are formed as arranged in the pivot points of the protective device torsion springs.

It can be seen that an operator can not reach the danger point and is thus protected from danger. In this first position, the protection device is through the switch 14 secured, ie, when moving the guard by the operator, the printing machine is stopped.

The protective device 7 ; 8th is in one position - full line representation - available. In this position is the device 2 used and thus in the active position. By inserting the parts of the protective device 7 ; 8th pressed in the direction of the cylinder and thus is the site of action 10 from the institution 2 reachable. At the same time the switch 14 disabled.

Also In this position, the danger point is not the operating personnel reachable.

1

cylinder

2

Facility

3

pressing element

4

First Wash cloth roll

5

Second Wash cloth roll

6

washcloth

7; 8th

guard

7

first part

8th

second part

9

hooking

10

black spot

11

receiving element

12

First feather

13

Second feather

14

switch

Claims (3)

Protective device on printing presses for a cylinder formed by a cylinder and a cylinder associated device, extending over the cylinder width danger spot formed as a two-part, between the device ( 2 ) and the cylinder ( 1 ) arranged protective device ( 7 ; 8th ), where at least one part ( 7 or 8th ) of the protective device ( 7 ; 8th ) is designed to be mobile and a switch that stops the printing press at an unsecured danger point ( 14 ), the protective device ( 7 ; 8th ) when decommissioning or removing the device ( 2 ) into a danger spot ( 10 ) and at start-up or onset of the installation ( 2 ) the danger point ( 10 ) and the active site between cylinders ( 1 ) and facility ( 2 ) releasable position can be brought. Protective device according to claim 1, characterized in that the mobile part ( 7 and or 8th ) is formed pivotable. Protective device according to claim 1, characterized in that the location change of the part ( 7 and or 8th ) of the protective device ( 7 ; 8th ) when the facility is inactive ( 2 ) by springs ( 12 ; 13 ) and the change of location when the facility is active ( 2 ) with the installation / commissioning of the facility ( 2 ) is coupled.