FR2538362A1 - VIBRATING TABLE FOR RECEIVING SHEET ARTICLES, IN PARTICULAR LIASES OF PAPER SHEETS - Google Patents

Abstract

A vibrating table for receiving sheet articles, in particular bundles of sheets of paper, with a view to stacking them at a stack forming zone, of the type comprising a detection member sensitive to a quantity characteristic of a stack in the process of 'to be formed, is characterized in that an evacuation zone ZE is provided next to the stack formation zone ZF, and in that said table includes a transfer device 25 controlled by said detector member, so as to moving said stack from the formation zone ZF to the evacuation zone ZE when said characteristic quantity reaches a predetermined value. Such a vibrating table which is intended in particular to be placed at the end of the apron of a collating machine, allows continuous operation of the latter. (CF DRAWING IN BOPI)

Description

The present invention relates to a vibrating table for receiving

  articles in sheets, in particular bundles of

sheets of paper.

  According to the present technique the bundles, or

  Composed of sheets of the same format, or of a different size and / or of a different nature, made by an assembly machine known per se, are at the exit of the latter stacked on one side.

  vibrating table inclined plane adapted to allow the equalization

  leaf articles, and thus to allow the forma-

tion of a regular pile.

  When a stack of such sheet articles is formed with a predetermined characteristic quantity, it is common practice to stop the assembling machine to remove the formed stack; after evacuation of the battery in question the assembling machine is switched on again and so on. With particular regard to bundles composed of sheets, of different size, nature and / or shapes, the thickness of the stack can not exceed a predetermined threshold and the number of bundles contained in the stack formed on the vibrating table

is limited.

  Given the speed of the assembling machine, the training

  battery on the vibrating table takes only a short time, so that the assembly machine is stopped frequently, and

  this is all the more frequent in the case where the bundles contain

  of different sizes or shapes in large numbers.

or not.

  It is therefore understood that the frequent stops of the assembling machine have a detrimental influence on its performance which is

  it affects the final cost of the products obtained.

  The present invention aims a vibrating table that allows

  to eliminate the aforementioned drawbacks.

  For this purpose, the invention relates to a vibrating table for receiving articles in sheets, in particular bundles of

  sheets of paper, with a view to stacking them in a zone of

  battery, of the kind comprising a sensor sensing member

  to a characteristic quantity of a stack being formed, this vibrating table being characterized in that an evacuation zone is arranged next to the pile forming zone, and in that it comprises a transfer controlled by said detector member so as to move said stack from the stack formation zone to the discharge zone, when said characteristic quantity reaches

a predetermined value -

  Thus, according to the present invention, when a battery is

  formed at the pile formation area, and that this pile

  carries a preselected number of sheets or bundles, the

  The detection unit controls the transfer device so that it drives the pile formed outside the moving parts of the assembling machine towards the evacuation zone.

she must be evacuated.

  The stack formed at the pile formation area being trans-

  immediately after it has attained its greatness of

  the area in question is free for the formation of

  a new battery, so that the assembly machine functions

  without interruption between each pile formed in the zone of

stack formation.

  It will be observed that the vibrating table according to the invention

  in a simple way the problems posed so far

  especially in the field of machine performance as-

  pretenders, perforators, or others concerning the confection

  books such as binders, forms and others.

  Other features and advantages of the invention

  will emerge from the following description given

  by way of non-limiting example, with reference to the drawings

nexes in which:

  FIG. 1 is a diagrammatic plan view of an assembly

  three distribution posts equipped with a table

  brante according to the present invention; Figure 2 is a schematic perspective view of the vibrating table;

  Figures 3 to 5 show in elevation different

  its operation of the vibrating table according to the invention.

  According to the embodiment chosen and shown in the figures, a vibrating table according to the invention indicated as a whole by 10, is particularly intended, although not

2538362.

  exclusively, to be placed at the end of an assembly

  ge 11 of an assembly machine having a set of distribu-

  12 comprising for example three distribution stations 1A, 11B, 11C, on each of which is placed a stack of sheets F which may be of a format, and / or of a different nature.

  from one position to the next

  bution is placed a handling device 13 able to pre-

  lift the sheets of each station one by one, and place

  these on the aforementioned assembly deck 11.

  Such an assembler machine-will not be described anymore

  in detail, since it is not part of the pre-

  This invention has been described in French Patent Application No. 2,489,797 of September 10, 1980 in the name of the Applicant. The vibrating table is supported by -n ch & ssis equipped with means for printing vibrations, said vi.brateurs means are not represented here because known per se; it comprises a plate 20, quadrangular, with on its upper face respectively a front stop 21 and a longitudinal stop 22 forming between them an angle of 90,

  and who are per-pendicular-to-the-plane, of the plateau- "On" -sa & face -'-

  the plate 20 is provided with means capable of supporting

  and a generally indicated transfer device adapted to convey a stack of sheets, or bundles, formed at the pile formation zone ZF to an evacuation zone ZE spaced from the preceding one, said zones being in the example shown one after the other as an extension of the

  assembly deck 11 of the assembly machine.

  Such a transfer device is for example carried by

  a chassis C (partially shown in FIGS. 2 to 5)

  swam on the underside of the plate 20; this transfer device comprises claws 26 fixed to a mobile carriage consisting of a platinum comprising a connecting bar 27 of the claws of the longitudinal members 28 fixed at one end to the aforementioned connecting bar, and at the other end to a cross member 29 , having a central section parallel to the plane of the plate, and end portions each having an angled arm to

  two branches 29 A, 29 B, said arms being themselves sensitive

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  The above-mentioned crossbar is fixed by hinge pin 32, 33, and at the elbows of the right-angled arms 29 A, 29 B, to sliders 35, at right angles to the central section. 36, movable on two rails 37,38, the ends of which are fixed to the aforementioned frame, while the

  free ends of the arms 29 B are, they linked by articu-

  40,41, to an endless drive chain 42, 43,

  meshing with toothed wheels 44, 45, 46, 47.

  The gears 44, 45 are mounted on a single shaft carried by the chassis C and are driven by an engine

  48, while the toothed wheels 46, 47 are rotatably mounted

  each, on an axis 49,50, carried by the chisel C,

  in order to allow the passage of the claws 26 during operation.

  transfer device.

  In order to allow free movement of the claws, the

  frontal stop as many passages as there are grif-

  his; (four in the example shown) '; it is the same for the plate 20, which has longitudinal slots 20 A

  extending from the frontal stop to the vicinity of the

Do not evacuate ZE.

  At the discharge zone ZE, the plate 20 carries a means, for example a photoelectric cell 55, adapted to actuate the above-mentioned motor 48 as will be seen below, while the chassis C substantially carries to in line with the evacuation zone ZE, an end-of-travel control 70 moves the gripper carriage, and substantially one level with the stack formation zone, another control member 71 so that the trolley rack is mobile

between these two commands 70, 71.

  The vibrating table according to the invention is arranged as is clearly visible in Figure 1 in particular at the end of the deck 11 of an assembly machine so that the sheets released from the assembly deck Il fall to the zone

  training-pile ZF; the plateau as well as the frontier stops

  tale and longitudinal integral with it are inclined along a diagonal D of the plate 20 so that the low point of the plate is located at the corner formed by said stops

  and the plateau, this low point being indicated by PB in FIG.

  The vibrating table thus oriented, the leaves released to the right of the ZF pile forming zone, are, under the effect of vibrations, directed towards the longitudinal and frontal stops on which, on two sides they bear. Referring to FIG. 1, a stack of sheets, of different size and / or type is being formed

  to the ZF stack formation zone, while the

  cuation ZE is battery-free, and that the transmission device

  fert is stationary in the waiting position.

  When the detection member responsive to a characteristic quantity (not shown in the drawings because it may be of any kind), for example sensitive to a predetermined number of sheets, the height or the weight, of a stack, or still at a time measurement, is actuated, the motor 48 is set in motion which drives in translation the carriage and, hence, the claws 26 - which then form a movable end stop towards the discharge zone; the ZF stack formation area is thus released and a new stack can

be formed at this location.

  The carriage is stopped in its movement when one of the slides, for example the slide 36, abuts on the control 70, for example a micro-stop contact, operates

  this one; the stack thus moved is then at the evacuation zone

  ZE; it masks the photoelectric cell 55 which

  holds the truck immobilized at the above mentioned area as long as the battery

was not evacuated.

  Two possibilities can then arise.

  The first is that an operator evacuates the battery present at the zone ZE; in doing so, the photocell 55 being disengaged, orders the start of the drive motor

  48 chains, so that the carriage and the claws are

  placed towards the formation zone ZF stack (Figure 5) until the slide 36 actuates the control member 71

  who stops the truck At this location of the truck, the grif-

  26 are returned to the waiting position between the slots 60 formed in the fixed front stop 21 It is observed that the structure of the carriage and its connection with a strand of the transmission chains, allows a tilting of the claws 26 which are thus, during their journey from the area of

  battery evacuation, to the stack formation area, escamo-

  under the plate 20, then at the end of this path, again protruding from the upper face of the plate. When the stack, at the pile formation area, reaches a determined characteristic quantity, a new cycle is triggered and so on so that the assembling machine

works continuously.

  According to the other possibility, the formed cell fed to the discharge zone ZE is not discharged in time for many reasons. In this case the photocell 55 does not give the starting order to the carriage which remains thus immobilized at the battery evacuation zone, and when the battery at the zone of

  pile formation reaches the prede-

  completed, the control member 71 not being requested by the

  slide 36 orders the immediate shutdown of the feeding device

  assembly machine, punching machine or other, so

  that the feeding of sheet articles to the area of

ZF stacking is stopped.

  A formed stack is thus in place at the stack formation area, and another shaped stack is in place at the evacuation area, when the evacuation zone is evacuated, the photocell 55 orders the trolley to leave the area. stack formation, the claws 26 being retracted during

  this displacement under the lower face of the plate 20.

  When the slider 36 reaches the control member 71 the claws are again in the waiting position, and this organ orders the departure of the carriage to the discharge zone ZE, while the feed device of the machine assembly is restarted to form a

  new stack at the ZF stack formation area.

  It can be observed that the control member 71 assures respectively

the following functions:

  (a) order the transfer of a battery from the training area

  towards the evacuation zone when the battery has reached

  predetermined characteristic quantity.

  (b) orders the stopping of the feeding device of

  in the stack forming zone ZF, when one stack is formed in this zone and another stack is present

to the ZE evacuation zone.

  In this way, thanks to a vibrating table according to the invention,

  the assembler is no longer stopped at the end of each stack, but only if a battery brought to the evacuation zone is not removed at the end of the formation of a stack at the zone.

training.

  Of course, the invention is not limited to the form of

  shown, which is liable to modify

  cations without departing from the scope of this

vention.

Claims (9)

  1 vibrating table for receiving articles in sheets,   in particular bundles of sheets of paper, with a view to   1 to a stack forming zone, of the kind comprising a sensing member responsive to a characteristic quantity of a stack being formed, characterized in that   evacuation zone (ZE) is provided next to the training zone.   (ZF) stack, and that said table has a   transfer device (25) controlled by said detecting member   tor, so as to move said stack from the training zone   (ZF) to the discharge zone (ZE) when the said   characteristic quantity reaches a predetermined value.   Vibrating table according to claim 1, comprising   a plate with a frontal stop and a lateral stop,   characterized in that the discharge zone (ZE) is arranged on the tray (20).   Vibrating table according to claim 1, characterized   rised in that the evacuation zone (ZE) is in the long-term   training zone (ZF).   4 vibrating table according to any one of the claims   previous arrangements, characterized in that the   transfer (25) is arranged under the plate (20).   Vibrating table according to any one of the preceding claims, characterized in that the transfer device (25) comprises a movable carriage carrying claws (26) capable of occupying an active position for which   they are protruding from the upper surface of the   water (20) for transporting a stack from the formation zone (ZF) to the evacuation zone (ZE), or an inactive position for which they are recessed with respect to said upper face for their displacement from the zone of evacuation (ZE) to the formation zone (ZF), said plate (20) and the abutment   front end (21) having lights (20 A, 60) capable of   put the path of said claws (26).   Vibrating table according to any one of the claims   characterized in that the claws (26) of the transfer device form a movable end stop during the transfer of a stack from the formation zone (ZF) to the evacuation zone (ZE).   Vibrating table according to any of the claims   cations, characterized in that the trolley is   movable on rails (37,38) distant from the inner face   the plate (20) via pivots (32, 33) so as to occupy with the claws (26) that   carries the carriage one or the other of the aforementioned positions.   8 Vibrating table according to any one of the   cations, characterized in that the carriage   takes a plate (27,28) with at one end the claws (26),   and at the other end a cross member (29) having a lateral   arms forming a two-armed square (29 A, 29 B),   which are themselves folded down in relation to the   tine, the pivot axes (32,33) above being located at the elbow of the arms at right angles, while the free end of said arms is linked by joints (40,41) to a chain without end of transmission (43).   9 Vibrating table according to any one of the claims   previous, characterized in that the brackets (29 A, 29 B) are each associated by the aforementioned axes (32,33)   a slide (35,36) movable on a rail (37,38) corresponding to laying.   Vibrating table according to any one of the   cations, characterized in that one and / or the other of the sliders (35,36) cooperates with control members   (70,71) arranged substantially, for one, in line with the   do stack formation (ZF), and for the other, in line with the stack evacuation zone (ZE).   11 Vibrating table according to any of the claims   cations, characterized in that the tray (20) is arranged at the stack evacuation zone (ZE), to receive   a control member (55) capable of ordering the departure of the   riot to the pile formation area, as soon as the pile to the evacuation area is evacuated.