FR2694232A1 - Rack of roll bars. - Google Patents

Abstract

The invention relates to printing. A rack of turning bars placed upstream of the entrance of a folder, comprises devices (19, 20, 21) for longitudinal slitting of the printed paper strips, and turning bars (4 to 9) arranged in pairs in several superimposed stages, and which can be transformably mounted inside the side walls, as well as an inlet roller and an outlet roller (31, 35) belonging to a Bay-Window device and, which can be positioned outside the side walls in the desired floor by means of vertical guide rails, it is possible to combine the input rollers as well as the output rollers with another deflection roller (32, 36), and the input roll or the output roll can be brought to the desired level, together with the deflection roll, Main application: printing presses of various newspapers.

Description

The invention relates to a roll bar rack placed upstream

  the entrance of a downstream folder, including cutting devices for longitudinal slitting of the printed paper webs, multi-stage roll bars

  superimposed, in pairs in each floor, and mounted moderately

  biles in side walls, and an inlet roller and an exit roller belonging to a "Bay-Window" device and which can be positioned at the desired floor outside the side walls, by means of rails

vertically directed guidance.

  US Pat. No. 2,136,277 discloses such a roll bar rack which serves to pass

  strands one above the other To the superpop pairs

  mobile rollover bars, are associated

  return rollers that can be moved in the direc-

  vertically by means of a drive motor, each

  that the return roller can be positioned at the

  tor of any pair of roll bars.

  Rollover bars and rolls of

  are usually made of hard chromium steel

  advantageous position, the rollover bars are

  expanded with a blast of air to prevent

  This assumes that each strand is guided, so that the side of the turntable that receives the blown air is directed towards the strand, as

  this is described in DE 40 13 229 CI.

  Whereas, in the case of the double change of

  direction, the return bars arranged by

  res allow to gather the strip of paper which has been divided by the cutting device (S-turn) the laterally arranged return rollers offer

  the possibility of introducing, if necessary, a strand between

  very strands (Bay-Window) If a strand from the group

  The printer must be returned to be returned for

  again to the same printing group, but to

  the other half of this group, to perform in this way

  two-sided printing in one and the same group

  for example, both rollover bars require

  to execute a change of direction are available.

  not in parallel but in such a way that the extensions of their axes intersect

from above (Pony rollover).

  Such a rack of return bars gives

  the possibility of cutting the strips of

  mated into elementary strands and to pass the strands

  on the middle of the cone in laterally offset positions.

  or superimposed, or in a

  combination, for example to form nested products

  in one another like the leaflets of a

  However, each client must decide, before the

  beginning of the construction of his racks of bars

  the type of product he wants to manufacture on his printing press, that is to say, the guide mode of the strands he wants to make in the retrograde rack and in which floor of this rack he wants to realize it Until now, it was not possible to perform all the kinds of production desired in

  a single rack of rollover bars.

  Subsequent changes in production, for example the case where a strand must be returned to a floor (Pony turnaround), are even more expensive at

  achieve or require a complete transformation of the spleen-

  In the most favorable case, it is necessary to mount additional return rollers or re-equip them manually, which represents a great expense of time Experience shows that customers who have to run frequent changes in production order afterwards, and when still possible, additional levels of rollover bars to avoid these works of

  transformation which is time-consuming and tax-

  have significant physical efforts.

  On the basis of these bases, the object of the present invention therefore consists in perfecting a roll bar rack of the kind mentioned at the beginning so as to make it possible to produce in each floor, without

  costs, in addition to the S-shaped reversals and the return

  Bay window, Pony turnarounds, so that the roll bar rack is not dedicated to specific productions after the completion of its

  construction but, on the contrary, has a

modular re.

  This problem is solved by the fact that

  well on the input roll than on the exit roll of the dis-

  positive Bay-Window, can be associated a roll of

  the additional roll, the input roll or the roll of

  exit and the associated return roller may

  can be placed in common in the desired floor, so that the exit and entry of a strand can be carried out

  on the same floor, the rolls arranged in pairs

  then in such a way that the strand passes tangentially

  from a higher extreme point or an extreme point

  lower of the angle turn-bar and is brought tangentially to a lower extreme or upper extreme point of the parallel turn-bar and that the outgoing strand and the incoming strand scroll through

parallel plans.

  Figures in the attached drawing, given only

  by way of example, make it clear how

  vention can be achieved In this drawing, very schematic

  Fig. 1 is a side view of a roll bar rack having three stages with linear adjustments prior to entry into a downstream folder; Figure 2 shows the bar rack of

  in the direction of the moving paper

  with the Bay-Window device arranged side-

  is lying; Figure 3 is a detail view of the roll bar rack according to Figure 2;

  Figure 4 is a cross section of a section

  lisseau. As can be seen in FIG. 1, rollover bars 4 to 9 arranged in pairs in three stages 1, 2, 3 for each stage 1 are provided upstream in the direction of travel of the paper strips. , 2, 3, a motor traction roller 10, 11, 12 and, in

  downstream of the rollover bars 4 to 9, a number of rolls

  13 superimposed traction beams which corresponds to the number of possible planes of passage of the strands at the exit of the rack of rollover bars On the rolls of

  10, 11, 12, placed upstream of the bars

  4 to 9, there are cutting devices 19, 20, 21 serving for longitudinal slitting of the paper webs. Upstream of the pulling rollers 13 of the folder, a fixed return roller 14 is provided for each possible section. and a locating roller arranged to be able to move away from or approach this fixed roller, in the direction of travel of the strand, which together form an adjustment device of the

  Longitudinal registration Additional deflection rollers

  Nos. 16, 17, 18 provide parallel guiding of the strands.

  The traction rollers 10 to 13 provide the function of

  give the paper strands precise and slippery guidance

  softness on the 4 to 9 envelopes

by a current of air.

  To prevent the strands from being deported on the rollover bars 4 to 9, it must be ensured that

  that the plane of entry of the strands arriving at the bars of

  turn 4 to 9 and the exit plane from the rollover bars 4 to 9 are parallel To this end, additional deflector rollers 22, 23 are provided,

  24 For example, a strand 50 coming from the tracing roller

  tion 10 is brought tangentially to the upper side of

  rollover bar 4, mounted as a return bar-

  The strand 50 returned is evacuated tangentially.

  the lower side of the turnbuckle

  parallel by means of the lower rollover bar

  re 5 mounted in parallel turn-bar

  change in production and processing

  rollover bars 4, 5, the rollover bar function changes from the bar function

  turnaround to that of the self-turning bar

  and vice versa Given that the two bars

  reversal 4, 5 are offset in height, it is ne-

  it is also necessary to shift the strand 50 in height by means of the deflector roll 22. On the one hand, the outlet openings for the air blown into the turning bars are on the side embraced by the strand and that, on the other hand, the plans for

  guidance of the strands on the rollover bars are

rallèles.

  In addition, deflection rollers are

  25 to 28 by which it is possible to pass the courses of the strands in a straight line below

  or over the rollover bars The rollers de-

  25 to 28 are optional and should be

  in stages prepared in advance.

  In Figure 2, the roll bar rack can be seen with the rollover bars 6 to 9 disposed in pairs in three stages 1, 2, 3, as viewed from the entrance side of the printed paper strips each.

  rollover bar 4 to 9 can be returned from 90.

  The mounting of the rollover bars 4 to 9 which allows

  the shift is known per se and has not been

  The space occupied by the rollover bars 4

  at 9 is limited by the wall SII of the driving face

  29 and the wall SI of the service face 30.

  It is provided outside, next to the face

  30, an entry roller and a roller of

  31, 35 each provided with another deflection roll 32, 36 The input and output rollers 31, 35 as well as

  the return rollers 32, 36 which can be associated with them

  optionally, have parallel axes, but offset in height, and have the same roll diameter. The height offset of the rollers 31, 32

  35, 36 which cooperate with each other corresponds to the distance

  between the outgoing and the incoming strand of a

  An inlet or outlet roller 31 or 35 and the roller

  water of return 32, 36 which is associated with it

  are height adjustable in pairs.

  interrupted by another possible position in

variant 33.

  In addition, another roll of

  motor traction 37 whose longitudinal axis extends parallel

  parallel to the longitudinal axes of the input and output rollers 31, 35 and the return rollers 32, 36 associated therewith, and which serves to compensate the

traction conditions.

  In FIG. 3, the view according to FIG. 2 is again shown. Externally beside the lateral wall 30 are mounted two guide rails 38 a, 38 b

  parallel to each other, which serve

  height adjustment of the input and output rollers

  31, 35, with the return rollers 32, 36 which can

  For this purpose, along the two guide rails 38a, 38b, which constitute racks in a manner known per se, and to hold the input and output rollers 31, 35 and the 32, 36 which may be associated with them, slides 40a, 40b, 41a, 41b each having two mounting positions 42, 43, one end of the inlet and outlet roll 31, 35 being mounted in a slide and one end of another deflection roller 32, 36 can be hung and mounted

  rotating in each slider On each of the sliders

  40 a, 41 a of the guide rail 38 a, is mounted

  trainer 44 (Figure 4) Furthermore, it is

  provided for each of the possible positions of the

  buckets 40a, 40b, 41a, 41b in the desired stage 1, 2 or 3,

  a capacitive switch 45 mounted in a fixed position (FIG.

  4) Here again, it has been indicated by dashed lines another possible position 39 of the roll

entrance 31.

  According to FIG. 4, each slider 40a, 40b, 41a, 41b has a guide housing which surrounds the guide rail 38a or 38b on three sides In front of the fourth side of each guide rail 38a, 38b b, which carries the toothing, is arranged a pinion 47 which is mounted on the shaft of the drive motor 44 and meshes with

  the toothing Each slider also has a surface

  connect 48 to an axis 49 of the input or output roller 31 or 35 Another bearing cradle 57 is provided for attaching an end of a return roller 32

or 36 that can be associated.

  In the guide rails 38a, 38b are practically

  several notches 60 of pyramidal form

  respectively to the different positions of

  ge provided for the rollers 31, 32 and 35, 36 A movable latch 51 can cooperate with the notches 60 The latch

  51 is integrally connected to a piston 52.

  One side of the piston is driven by a return spring 54 On the other side, a compressed air supply line 55 opens out. These elements form a positioning device on the guide housing 46. mounted a pallet 56 which

  may cooperate with the capacitive switch 45

  capacitor 45 has the constitution of a photoelectric device which emits a control signal when

  the pallet 56 is placed facing the capacitive switch.

  To adjust an entry or exit roller with or without an associated return roller in one position

  given, the capacitive switch 45 associated with this posi-

  The drive motor 44 now moves the slider and, with it, the rollers by means of the pinion 47 and the rack 38. When these members have reached the desired position, the pallet 56

  which is arranged transversely to the capacitive switch

  tif 45, triggers a signal in the latter On the one hand, the signal triggers the stopping of the drive motor En

  same time, a control valve is opened and the

  The plunger 52 displaces the latch 51 towards the pyramidal-shaped notch 60 which faces it, so that the latch 51 engages and thus , the slide is locked and immobilized, the

  oblique surfaces of notch 60 and lock 51

  then a precise positioning of the slider and,

therefore, rolls.

  Through the use of rollover bars

  which can be moved to the engine and can be

  in advance from a control station and thanks to

  as a result of which the position of the rolls of

  and exit from the Bay Window device, with

  they are associated with them for the return-

  Pony, is also tuned to the engine, starting from

  control station, and can be preset automatically-

  The result is a modular roll bar rack that meets the most diverse production specifications. All floors are therefore equipped

  for all kinds of reversals, and every

  production is possible without addi-

  In other words, all types of produc-

  usual in newspaper printing is possible.

  in each tier of rollover bars and may

  can be preselected at will from the control station, in programming technique This removes the costly and complicated transformations in the

  customer since it is sufficient to mount after the event or

  turn paper guide rollers or idler rollers into bearing positions that are already

existing.

  The possibility of pre-setting all the produc-

  newspaper printing from the order station allows a printer to prepare the following type of production during the course of the current production.

  reversal is then fully regulated on this

duction programmed in advance.

  It goes without saying that various modifications and

  can be brought by those skilled in the art,

  in particular by substituting the equivalent technical means

  slow, without departing from the scope of the invention.

Claims (3)

R E V E N D I C A T IO N S   1 Roller bar rack placed in   upstream of the entry of a folder placed downstream, includes   cutting devices for longitudinal slitting   dinal strips of printed paper, bars of return-   arranged in several superimposed layers, by   in each floor, and mounted in   side rolls, and an entrance roll and an exit roll belonging to a "Bay-Window" device and which can be positioned on the desired floor outside   side walls, by means of direct guide rails   vertically, characterized in that both the input roller and the output roller (31, 35) can be associated with an additional idler roller (32, 36), the input roller or the roller of output (31 or   35) and the return roller (32 or 36) associated with it   can be placed in common in the desired stage (1, 2 or 3), so that the output and the input of a strand can be performed on the same stage, the rollers (31, 32 and 35, 36 ) arranged in pairs cooperating in such a way that the strand passes tangentially from an upper extreme point or a lower extreme point of the   turn-around bar and be brought tangentially-   at an extreme lower or higher extreme   of the parallel turn-bar and that the strand   as the incoming strand scrolls in parallel planes.   the. 2 Roller bar rack according to the   claim 1, characterized in that each of the rolls   the outlet and inlet channels (31, 35) are mounted at each of its two ends in a slide (40, 41) provided with two bearing positions (42, 43), so that one end of another return roller (32 or 36) can be rotatably hooked in each slide, and the slides (40, 41) can slide along the rails guide (38).   it 3 Rolling bar rack according to the   claims 1 and 2, characterized in that the rolls   output and input (31, 35) and the rollers of   (32, 36) which may be associated with them, possesses   tooth the same roll diameter, the two positions of   bearings (42, 43) of a slide (40 or 41) are   in height, the height offset corresponding to the distance between the output and the input strand on the same floor.   4 Roller bar rack according to one   of the preceding claims, characterized in that   the guide rails (38) constitute racks and each slider (40, 41) is associated with a pinion (47) which is engaged with the guide rail (38) and   is connected to a drive motor (44).   Roller bar rack according to a   of the preceding claims, characterized in that   each stage (1, 2, 3) is associated with a capacitance switch   tif (45) and that by means of the capacitive switch (45),   it is possible to trigger at least one positioning device   associated with one of the slides (40, 41) of the rollers   output and input waves (31, 35), and which controls a latch (51) cooperating with the guide rail (38) for   lock the slide (40, 41) carrying the rollers   entry and exit lanes as well as rollers of additional references.   6 Roller bar rack according to a   of the preceding claims, characterized in that   all the usual kinds of production in printing   newspapers may be pre-set in each   Turning bar, from the workstation   according to a programming technique.