FR2556327A1 - SHEET GUIDING DEVICE IN SHEET HANDLING AND PROCESSING MACHINES - Google Patents

Abstract

A. LEAF GUIDANCE DEVICE. B. DEVICE CHARACTERIZED IN THAT THE PRE-TENSION BEARING7 IS LIKELY TO BE MOVED IN THE DIRECTION OF THE PERIPHERY9 OF THE LEAF GUIDING CYLINDER 1.1. C. THE INVENTION RELATES TO LEAF GUIDANCE DEVICES.

Description

1s-- "Sheet guiding device in machines

  handling and processing of leaves. "

  The invention relates to a sheet guiding device in sheet handling and processing machines. We generally know devices for

  guiding the leaves which consist of several

  leaves on a tree of leaf takers.

  the likely to be trained and who is mounted in

  tree bearings of leaf takers.

  A disadvantage in this case is that a modification

  from the position of leaf takers to their point of

  on the leaf-takers 'shaft within the set of leaf-takers' tree bearings during the closing process of leaf-takers, due to a reversal of the direction of the resulting force on the bearing different efforts acting on the takers' tree

  leaves, can not be avoided and thus a transmission of

  exactly between sheets of two guide devices

leaves is not guaranteed.

  The object of the invention is to improve the accuracy

of leaf transmission.

  The problem underlying the invention is to pocket

  to a large extent in a film guidance device.

  the, a change towards the periphery of the position of the leaf takers at their point of rotation on the leaf-takers' tree during the process of 2.- closure of the leaf-takers, within the limits of the game

  bearings of the tree of leaf takers.

  According to the invention this problem is solved in that the preload bearing can be moved towards the periphery of the cylinder. The invention will be explained with the aid of an exemplary embodiment shown in the accompanying drawings in which: FIG. 1 represents a device for guiding sheets; FIG. 2 is a schematic representation;

  of the bending curve of the forces on the bearings of the

  number of leaf takers resulting from the efforts of the

  Figure 3 is a diagrammatic representation of the bending curve and the loads on the bearings of the leaf-takers' shaft resulting from the effort of the roller lever. FIG. 4 is a diagrammatic representation.

  on the bearings during a constraint in direc-

  5 shows the cross-section of the leaf-taker's shaft in the bearing of the shaft of the

  leaf-taker when the leaf-taker is

green, -

  - Figure 6 shows the cross-section of the tree of the leaf-taker in the tree bearing

  from the leaf taker when the leaf taker is fer-

  In Fig. 1 there is shown a sheet guiding device 1 which consists of a sheet guiding cylinder 1.1 in the cylinder channel 1.2 of which

  is fixed a sheet taker support 1.3.

  To this support 1.3 is associated a sheet taker 1.5 mounted on a tree of sheet takers 1.4. The S6327 3.- sheet 1.5 taker is likely to rotate around the point

of rotation 1.6.

  In addition, efforts are

  in a plane when the sheet taker 1.5 is closed.

  m, namely the effort 2 of maintaining the sheet, the effort 3 of the leaf taker, and a force 4.1 exerted by a roller lever 4. $ e

  In the following figures 2, 3 and 4 are schematic

  individually represented, the bending curves

  1.4.1., 1.4.2, 1.4.3. of the tree 1.4 of the leaf takers

  the results of different efforts.

  Figure 2 shows the 1.4 tree of leaf takers

  mounted in the bearings 5 of leaf-taker shafts, as well as the forces 3 acting on the leaf takers 1.5 not shown and the force 5.1 acting on the bearings of the tree of leaf takers. Effort 3 acting on the leaf takers and the 5.1 effort acting on the levels of takers of

  leaves, result the flexion curve 1.4.1.

  FIG. 3 shows the shaft 1.4 of leaf takers driven by a roller lever 4 and the force 4.2 acting via the roller lever 4 on the bearings 5 of the tree of leaf takers and

  resulting from the torsional torques of the leaf-grippers

  1.5, as well as the 1.4.2 bending curve of the 1.4 shaft

  sheet takers, resulting from the 4.1 effort of the

  go to pebble. In FIG. 4 is shown the bending curve of the tree 1.4 of leaf takers in the case of a

  constraint of this tree 1.4 in the direction 9 of the peri-

  phérie. The leaf-picker shaft 1.4 is mounted in the bearings 5 of the leaf-taker shaft. Between the bearings 5 of the sheet taker shaft is arranged a preload bearing 7 which by the stress 7.1 '4.- in the direction 9 of the periphery, eliminates the play of the bearings 5 and 7. The bearing prestressing member 7 is slidable in the guide cylinder of sheets 1.1 towards the periphery of this cylinder. The bending curve shown in Figure 1.4.3 of the tree of leaf takers

  1.4 results from the stress effort 7.1 'in the direc-

9 of the periphery.

  FIG. 5 is a section according to FIG. 4 of the

  number of sheet takers 1.4 in the pre-

  when the leaf taker 1.5 is open. In the middle of the shaft 1.4 of the sheet takers and the prestressing bearing 7, the constraint force is applied

  7.1 'acting in the direction 9 of the periphery.

  In FIG. 6 is shown the tree 1.4 of the first

  in the preload bearing 7 while the sheet taker 1.5 is closed. In the middle of the preload bearing 7 applies the stress 7.1 'in the direction 9 of the periphery. Perpendicularly to this strain stress 7.1 'apply to the middle-of the 1.4 leaf takers shaft, the 4.2 force on the bearing of the roller lever and the 5.1 force on the bearing of

leaf taker.

  The forces shown in FIGS. 1, 2, 3 and 4 derive the resultant force 8 'on the bearing shown in FIG. 6 and applied to the shaft of grippers.

leaves 1.4.

  Thanks to the additional constraint of the leaf-gripper shaft 1.4 towards the periphery of the sheet-guiding cylinder 1.1., It is obtained that the

  applied to the shaft 1.4, the effort 5.1 on the

  binding the sheet taker, and the resulting effort 4.2 on the bearing of the roller lever, move only insignificantly, the shaft 1. 4 in the bearings 5 of the leaf takers tree, and thus prevent to a large extent a change in the position of

  leaves 1.5 in the direction 9 of the periphery.

5.-

Claims (1)

CLAIM Sheet guiding device in sheet handling and processing machines, comprising a plurality of sheet takers disposed on a sheet-taker shaft mounted in leaf-taker shaft bearings, characterized in that the preload bearing (7) can be moved in the direction of the periphery (9) of the cylinder (1.1) for guiding the sheets.