DE3347778C2 - Device for removing printed sheets for their assessment - Google Patents

Abstract

The invention is a device for carrying out the sample sheet removal from the chain boom with attached gripper rows with cam-controlled gripper opening of a sheet-fed rotary printing press. The gripper opening curve (14) is designed as a disk and rotatably mounted on a shaft (2). By means of a pivoting device (16-19, 23) engaging it, the gripper opening curve (14) can be brought into two end positions (26, 27), one end position of which is used for the gripper opening to form stacks, while the other end position causes a delayed gripper opening for sample sheet removal.

Description

^ \ f ^ X ^ uetzen _the abnormal pressure awareness U «AJ _{Gripper opening curve} is made by re *> eb JJJgJ"? ^ lateral adjustment of the same, such as ^ ™^ ^ print sheet after its displaced

_the roller grippers pretty much

■ -

tS5i ™ -c .g. Ue ₈ , d _CT »« present invention the task ». «K

£ 3KS2Ä5! = 5r = SS5 =

chen gripper opening curve, the gripper opening time and place variable, whereby the gripper opening curve under certain circumstances also a

Etein von SSIm ridiUgen Augenblkk hmus- all of the with handwheel

at high printing speeds the factor affecting the speed of the

great demands. Individual sample sheets can be found here

Eliminate the state of the art, called .st The present ^

risk of exposure

the freshly

AsdXU, GB PS 7 s5 298 is to be named, which has an auxiliary device to support the above-described manual TaiScei for 13Sf. By folding down the front sheet stops, a sheet sliding surface is created over which the test sheet is to be conveyed to the outside. The functionality of this device basically presupposes a relatively late opening of the chain tire, which is not feasible with the very hon η drXschwi'ndheiten customary today, if in normal operation it is to be guaranteed that the sheet to be stacked is deposited neatly and flat and an inexact back edge due to rebound of the bow must not occur. ^Ausfuh "

^ f ^ _rear

Part of a W-usleger, a rear sprocket 3 is mounted on a shaft 2 on a side wall 1 on which a gripper chain 4 runs, which is provided at appropriate intervals with gripper rows 5, which feed a sheet of paper 6 into a stack 22. The second side wall, which is not visible in the side view, has an identical structure. Front ^^^ ⁸ ensure a proper stack biU ™ fr

In the upper area one mounted on shaft 2 and Gre ^ erci «« «gdcurv · H

is at the pivot point 15, a ^{co »d} ^ i" ¹ ™ * ^'1 ^ ", ₆ re.ch the side wall 1 ^ erausrasende _Ζυ β ^" | 8 ««

hinged. An attached stop 23, as well as one Compression spring 17, which is located on a side wall 1

65

3

attached bracket 18, determine the in the position 26 of the pull rod 16 shown in the figure and thus the position of the gripper opening curve 14. The spring force the compression spring 17 is chosen so that by the action of a cam roller 13 of the row of grippers 5 on the gripper opening curve 14 an unintentional pivoting of the same cannot occur.

To initiate a printing sheet removal z. B. manually using the handle 19, the pull rod 16 is pressed against the spring force of the compression spring 17 and against the direction of sheet travel in a position 27 shown in dashed lines . As a result, the arc-free

; transfer point beyond the front sheet stops 8

relocatable. This process can be done in an extremely short period of time.

: 'The gripper opening curve 14 is thus in two end

<4 positions 26, 27 can be moved, whereby these end positions

% Gen the one hand by the abutment of the handle 19

Ϊ! on the rear area of the side wall 1. and to the ■

'ü others by hitting the stop 23 on the \

% Bracket 18 are determined.

Vx Thus, the gripper opening can take place in a delayed manner via the cam roller 13> i running along the gripper opening curve 14, namely only when the sheet

ί '"^{; is} already passed over the stack 22 immediately after the delayed release of the sheet of paper

■■ · 6 this is covered by a rotating suction roller 20

;: take, which takes care of the further transport and him, in

guided by a guide channel 21, conveyed to the outside, where it can be conveniently received by the machine operator with one hand.

With the other hand, the pivoting device 16-19, 23 can be operated at the same time, due to their favorable arrangement in the rear, forehead

;, side area of the bow boom is possible

The solution to the set task Vx shown in the figure is simple, inexpensive and effective, the use of a single gripper opening curve being emphasized as an essential advantage

1 sheet of drawings

45

50

55

60

65

Claims (1)

Patent claims: , Chain boom on arched red pressure masks with attached rows of grippers with cam-controlled Larger opening, where the: Larger opening curve retractable around the axis of rotation of the dead chain wheel of the gripper chain marked that for the purpose A similar device is described in _DE .ps 3 94 052, which will ultimately be discussed. The printing sheet smalne is done there by overriding the