LU83403A1 - IMPROVEMENTS IN DEVICES FOR AUTOMATICALLY ASSEMBLING SHEETS SUCH AS FOR EXAMPLE PAPER SHEETS - Google Patents

Description

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Hoger Kegnier Meus, 7 Avenue dos Koittys, 4820 lleusy, bolgiqui

Improvements to devices for matically assembling sheets such as for example (sheets of paper.

The present invention relates to improvements made to devices for automatically assembling sheets, such as for example sheets of paper.

This improvement is especially applicable when the sheets, whether paper or not,; which must be assembled are by nature particularly smooth or slippery.

* in the usual printing technique, we often have to draw up booklets, that is to say sets of sheets, sometimes different, arranged in a well-defined order, generally in their order number t £ " 'tion,

The printed sheets necessary for constituting the envisaged booklet J can, for example, be obtained from a printing machine in the form of a series of identical sheets forming a packet, for example a packet <sheets n ° 1, then a packet of sheets n ° 2 and so on "4% / jî / i I '* The assembly operation in fascicles consists in taking each time and if possible almost simultaneously a sheet from each of the interested packets, and bringing together these have them in the desired order, for example in their numerical order.

This operation was long manual, and therefore slow and costly. In this form eJ required the employment of a large and expensive staff, who also risked being mistaken in handling the fei »les. In addition, the space required to carry out the ordered arrangement of the packets of sheets before assembly was so large as soon as the number of sheets per specification reached a certain value, that this kind of assembly by manual means was practically no more possible.

Several methods and devices have already been proposed with a view to mechanizing this operation of assembling the sheets into fascicles. Among these, a device of this kind has been described in the patent Ub, 3,173,680 which makes it possible to carry out “efficiently and quickly, as well as practically without risk of disturbance, such an operation of putting sheets into fast cules .

Such a machine is constituted by the combination of four main devices mounted on the same frame and a store comprising a contiguous inclined boxes and a number at least equal to that of the sheets to be assembled in a same booklet, boxes in which we put the leaves p <! species, at the rate of only one species per box and in the order in which they must be followed in the booklets; a lifting device intended to extract the sheets one by one out of each box in order to engage them in an assembly device

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il bleur, which lifting device has "fingers" or i l. stems animated by an alternating movement from bottom to top and from 3 top to bottom, and which, by means of skids with which they are provided! i at their upper end, simultaneously entail in the ascending movement the upper sheet of each of the Easter

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* - housed in the store boxes; a collection or assembly device which at least partially superimposes all the sheets in the desired order and routes them to a receiver, in which the successive fascicles thus constituted stack up *

According to an advantageous modality of this known device "the movable hanpæ of the elevator are articulated by their lower end, on a bar which is set in alternating movement of ascent and descent by a rotating cam of suitable profile, mechanically actuated in a manner known per se, the said shanks being inclined relative to the vertical, so that under the effect of gravity, possibly aided by the action of springs, the shank skids are applied with an appropriate force on the packages1 of respective sheets. These pads are further provided with a pivot articulation, which more often than not has its axis in the direction and according to the proper axis of the corresponding lift shaft, supporting the said pivot and itself, as said above. articulated on said bar by its lower end. The pads are further provided with a secondary pivot allowing their tilting or rotation about a horizontal axis "so that during their upward movement, L pads are in a determined position, called entry · nemeftt des leaves, and that during their downward movement the skids are in a so-called tilted position which leu: r allows to slide on the leaves remaining in the packages, without running the risk of causing said leaves down "The passage skates from one position to another, leaks precisely by rotation around said horizontal axis.

It is worth pointing out here that attempts # to perform assemblies of particularly smooth surface sheets * ", such as for example coated or semi-coated sheets of paper, have already been made; they are based: pneumatic methods, acting by suction on the top sheet of each package. It does not appear that :: these attempts have really solved the problem

He posij in an effective way, .y * ~ 'l-

The present invention relates to an improvement made in particular to a type of machine of the kind described above, and by which, it could also be used, without any difficulty for assembling sheets, in particular of paper, the surface is particularly smooth (coated or glossy paper). By way of example, mention may be made of the papers known under the name of "coated" or "semi-coupled", that is to say those for which an entratnome 5 of the conventional type by a pad provided with an organ rough * no. does not allow absolutely safe operation without the hazard of a common assembly machine.

The book of the invention will be described later after we have described a non-limiting example of embodiment of a device according to that of the inventi

It is clearly specified here that the device of the invention can be used on multiple types I of assembly machines. 6a description is focused on its ad tation to an assembly machine of the type described in the pre bule, but it is only by way of nonlimiting example, because it can easily adapt to assemblers whose contiguous cases are horizontal, almost -horizontal or slightly inclined (therefore for example practically superimposed on each other). It is however recommended not to use a box whose inclination on the horizontal would be too close to $ 0 °, or in these cases, special precautions of-! : should be taken to prevent buckling of bundles of leaves under their dead weight.

Whatever the type of machine for assembling sheets into fascicles, the boxes of these comprise, for the placement of the sheets to be assembled, two lateral borders, the spacing of which is adjustable to the width of the sheets, a bottom (generally a thin sheet) so that the wrapped leaves can rest there, as well as a rear 16a consisting of a wall, usually perpendicular to the plane of the bottom, wall whose position is adjustable according to the back length leaves to be assembled, and generally allows the passage of an organo (stem) for setting in motion the leaves to be assembled.

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The device which is the subject of the present invention is adaptable to all these types of collating machines, and is particularly advantageous in the case of sheets with glazed surfaces, which, as is known, have very large electrostatic attraction forces between them, which make them sheet-to-sheet separation very difficult to control.

It remains effective even for sheets of this type, · particularly thin, whose specific weight can drop up to 30 grams per square meter. The advantage of this invention is immediately apparent, given the low mechanical resistance of such sheets to electrostatic forces of mutual cohesion.

The device of the invention comprises in particular a specific driving device, intended for setting in motion the upper sheet of each package, as well as a device ensuring the separation of said upper sheet from the sheet immediately underlying it. and keeping this last named sheet in place. The action of the two aforementioned devices cannot be separated from each other, it is a real combination of means, the result obtained necessarily dependent on the use of these two means, which react one over the other .

Figure 1 shows schematically and not to scale, an assembly machine of a type known per se, on which one can adapt the device forming the subject of the present invention, the following figures represent by way of different examples of projections of the different parts of a driving device proper of the sheets arranged in the different compartments of the machine of FIG. 1. Other figures relate to other parts of the device of "the invention. These figures will explained as and when required.

In Figure 1, we can see in 1, the chassis of the assembly machine, in 2 is the battery of inclined boxes (represented in the figure by the box on the far left). The battery boxes 2 each have a rear stopper 3 "each supporting a pack of sheets 4 to be assembled. Λ no * l ·.

j ter that the reference 2 is also used to designate the bottom of each box.

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A rod 5 common to all the lockers is subjected to a back-and-forth movement in the direction of arrow 0, by any means known per se. The rod 5 serves as a support for the lifting rods 7 articulated at Ö on said rod 5 · The rods 7 each rest by their upper end 9 (or anterior) on a bundle of sheets. The upper or anterior ends of the stems are terminated by a head or pad 10.

During the elevation movement of the upper leaves by the heads 1υ, the said leaves are caught by their anterior ends between one or more couri'oifis, collectors 10 (by their lower strands) and a series of rollers 11. The drive of the sheets is produced in the direction of the arrow IL, the set of sheets thus in the course of training constituting in a train, a complete booklet, received at 13 at the end of the machine, in an appropriate receiving member, which superimposed completely, on top of each other all the sheets "of the booklet in question.

The collector belts are of the endless type, and have an upper return strand 14, resting on the back rollers 15 placed above the rollers 11, and which, at least by their own weight, keep the lower strands 10 in contact with the rollers 11 , which ensures a good drive of the sheets by their front edge, once they have been driven upwards by the pads, following an appropriate trajectory, guiding them to be caught between the rollers 11 and the strands 10.

The control mode of the belts, as well as that of the rod 5 can be of any type known in soijla assembly machine can consist of two or more groups of boxes, controlled synchronously or not, without departing from the domaj ne of the invention present.

. * In FIG. 2, as well as in FIG. 3, a part of the leaf lifting device can be seen out of boxes. This lifting device in fact constitutes the head 1b, anterior end of the stems 7 ", it is made up of two sets of parts and is only a first part of the totality of the device forming the subject of the present invention.

The link of the poles, in fact, the heads 16 are subjected with the poles which support each of them to a back and forth movement, by means of the horizontal rod 5 · i: ßs totes H> peddle each two sets, the first is shown in Figures 2 and 3 "Ie second taken under the overall reference 17 is shown in. Figures k and 5. The first set of the head 1b is fitted onto the hamp® 7 (in fact the effective end S.J of this shaft).

Figure 2 shows a side view of this first set 'and Figure 3 eu shows a plan view, the shaft being at 9 at this time, for ease of drawing, assumed to be horizontal.

Said first part consists of a metal crosspiece 18, provided at each of its two ends 19 and 20, with a pin 21-22 with an axis perpendicular to the plane of the drawing. These two pins are intended to serve as a pivot for the second part (in fact the second set of the head 16). The cross

18 is provided on its front face 23 (fig. 3) with two thicknesses 2k and 25 "arranged at the ends of said face, and made of a material that is both soft, rough, non-conductive of electricity such as by example of rubber foam, and whose ROLE

a word is to serveHmtée to the movable part of the head 16 (cf. fig adds M_____ 4 and 5) described below. The assembly shown in Figures 2 i, and 3 is provided in its center, but on the side opposite to the stops 2k- 25 * with a metal pin 2b, generally of circular section, intended to be introduced at low friction into the end anterior 27 of the shaft 7, shown in broken lines, pin can however rotate in the shaft around the axis 28 of said shaft. In the case where the head 16 must not be put into service, it can, in its case, turn it 180 ° around the axis 28, and at this time, it rests on the bottom of the box by a insert 29, covering its * upper central part, and made of an electrically non-conductive material. The upper face 30 of this interlayer is smooth, so as not to absorb energy by i »i friction, during the movement of all the poles in service, i vice.

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The two pivots .'J 1 and 22 serve as a horizontal axis of rotation for the mobile part of the head 16, mobile part q in fact constitutes its second set. This movable part consists of a U-shaped stirrup 31, the two ends 32 and 33 of which are each provided with a hole 3 ^ "35 intended to be passed through the pin-pivots 21-22. The clearance left between the internal faces of the ends 32-33 and those external 36-37 of the crosspiece 18 is insufficient so that after mounting - of the U on the two pivots (which may be only simple "prisoners screw ), the latter can separate it without dismantling it expressly. The front face 38 of the stirrup is provided at its two ends with two thicknesses 39 and 40, rough, soft and non-conductive of electricity. The role of these two thicknesses 39 and is twofold, on the one hand during the ascent or stroke before the pole, their anterior sides ^ 7- ^ 8 are parallel or almost to the upper sheet of the packet, a sheet which they thus contribute to be driven forward by their rough nature, and on the other hand, at the start of the descent or retrograde stroke of said shaft, they cause the rotation towards the top of the stirrup 31 around its pivots 21-22 , in such a way that their contact with the sheet during training by the driving device (following the lifting device of which the shaft is part), is reduced to a minimum, that is to say at their lower edge h \ -k2 and that is and res interrupted an electrical control contact made during the ascent phase (or forward movement) of the shaft, between an electrical terminal connected to the general machine control circuit (not shown) and a metal plate h3 secured to the caliper.

This provision allows to check if all the stems have effectively, by means of their skate, driven a leaf forward (in the present example, upwards) .8 this condition is not fulfilled, one of the pads is not half in rotation by the sheet caught up by the driving device f, jef the contact between the plate k '} and the corresponding terminal is not »JjL, not broken and the machine stops automatically,? / f / /

The front face 38 of said stirrup is also provided with two pointed members 43-44, of hard material, the ends 45-46 of which extend beyond the front surfaces 47-48 of thicknesses 39-40. These two pointed members, after called "needles" are fixed by screws 49 each in a support 50-3 · »themselves attached to two branches of the stirrup U by screws 5 ^ -53 ·

The points of the needles 43—4't, on the one hand protrude the faces 47-48 a sufficient distance forward (to be adjusted experimentally in each case) and on the other hand "are of an appropriate fineness to exert on the upper face of the sheet to cause a friction force, the adjustable in particular with the weight of the cross member, capable of carrying out the starting of the sheet, without however piercing it and without leaving on the sheet, a practically perceptible trace. This movement is controllable and adjusted by means of the screws 49 fixing the position of the needles in their supports 50-5 ··

This adjustment is very important, because it should not be forgotten that we are dealing especially with sheets such as coated paper, or seiai — coated or glossy, whose electrostatic forces of mutual attraction are important and whose least alteration the glossy quality of the surface cannot be accepted.

Several types of material can be envisaged for the constitution of needles, hard materials which hardly wear out, for example quartz, or different hard metals. However, preference is given to needles made of steels, possibly special, or tungsten carbide.

It should be noted that in the rising phase of the shaft, the stirrups are rotated around their pivots, in a position such that the tips of the needles have come into * * contact with the sheet to be driven, while in the descending phase of the shank, the stirrup has pivoted around the said pivots "in the opposite direction to the previous rotation, until the rear faces 54-55 of the supports 50-51 are in contact with the front faces 56-57 of the splicers elastic 24-25. At this mo! " | the points of the needles are released from the leaf · entrained, the edges 41-42 are practically the only organs

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y * f -10- in contact with the upper sheet, and the plate 43 has electrically separated from its corresponding contact terminal.

As a precaution, the said plate 43 can be made particularly smooth on the side of its lower end so that, in the downward phase, the said plate comes into contact with the rising sheet or the underlying sheet, no damage could occur to the say leaves.

As said above, the lifting device does! ‘Constitutes that the first part of the device forming the object {· of the present invention, and exercises its function in combination: with the second part of this device, which is described below.

| The function of the head 10 therefore consists as described

above to ensure without damage the starting of the upper sheet of the packet of sheets located in the box. I

! However, it should simultaneously be ensured that the immediately underlying sheet is not also entrained with the first sheet, in particular by electrostatic attraction. This objective is achieved thanks to the second part of the device of the invention.

j Each pack of sheets, whatever the type of collating machine used, is placed in a box (or rack) comprising a bottom, on which the pack rests, a rear stop against which the rear edges of the sheets are in contact with them, and two lateral edges whose interdista this is adapted to the width of the sheets.

other words v The second part of the device of the invention neck. Γ? in a first variant add A. sisteéd on the one hand to provide these lateral edges with a length — at least equal to that of the sheets to be driven, while maintaining the difference between the distances on the one hand (according to a j longitudinal of the compartment) rear stop - front of the side edges | _ and on the other hand the length of the leaves, relatively short for example a few millimeters. This second part of the Hit | two words device consists on the other hand of providing the ends ^^ fant • added,,.

! said lateral borders of constriction steps (Cfr. fi! J 6) of small importance, for example it at 3 mm, and sufficient I F.

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; -11- smooth so as not to damage the edges of the leaves which will abut against them during their upward movement.

Under the entrainment that the first leaf undergoes from the tips of the head, its anterior edge reaches the zone P narrowed by the two steps of the constriction and is forced to take a shape somewhat arched upwards (by a phenomenon somewhat similar to the buckling of a beam). In doing so, it can only detach itself clearly from ln. underlying sheet, which almost completely eliminates the forces of electrostatic attraction between the two sheets. Said upper sheet is driven upwards by the points until its front edge is introduced between the belt ΙΟ and the corresponding roller 11. The driving speed of this “belt-roller” couple being greater than the speed of movement of the hate pe and therefore of the driving head 1b, the latter rocks under the action of the sheet, thus spreading the tips of their contact · with said sheet. This continues its path between belts and rollers while the pole starts its retrograde movement to go and grab the next sheet.

The importance of shrinking is to be determined experimentally as a function of the characteristics of the sheet and in particular of its natural stiffness, because after having crossed the shrinking zone with a non-rectilinear transverse profile and necessarily deformed upwards, the sheet must be able to resume naturally its rectilinear transverse profile, thanks to its natural stiffness, and above all without presenting the slightest trace of bending.

Different forms of steps can be used with interest, the one described later is only - 'by way of non-limiting example. Comes within the scope of the present invention any shrinking system fulfilling the same function based on the same principles.

I £ n regarding the underlying sheet, which tends to be entrained with the first sheet by virtue of mutual electrostatic attractions, we found ex-! perimentally that these risks of entrainment are low, see "am. On the one hand indeed this second sheet undergoes! : '-12- the attraction of the third leaf on which it rests, and on the other hand, even if it tended to set in motion, it would be more difficult for it to cross the zone of crossover, since this place, the only space it can occupy to deform is already occupied by the first film] According to an advantageous variant of the device of the invention, the second part may include a member making it possible to instantly secure the blocking on plr " , that of the sheet immediately underlying that which needs four letters u 1 i added Γ to be driven. Both variants can be used simultaneously

This blocking device comes into operation as soon / as the pole has started its upward movement, it is also / preferentially controlled by the pole itself.

It consists of a pressure member acting on the extreme rear edge of the underlying sheet to prevent it from moving with the first sheet. Advantageously, this pressure member is made up of one or more points, for example of the type driving those of the upper sheet, but these points are integral with a cross member or member, any movement of which in the direction of movement of the sheets is made mechanically. impossible. The weight of this member or crosses so that the characteristics of the tips are calculated so as to effectively block the second sheet, without however the mark] in a truly visible manner. Such an organ is all the more effective as the initial position of the packets of sheets approaches the horizontal.

Figures 6 and 7 show how we can conceive: the device for local throttling of the leaves. FIG. 6 represents a top view and a side view of this device, the top view being perpendicular to the plane of the bottom <corresponding compartment. Figure 7 shows a cross section. Either in 5S ”59 the two lateral edges of the rack, the bottom of which is represented by the two coplanar faces (” 0-61, i the distance 58-59 is adjustable in a manner known per se,

It to adapt to the width of the sheets * The front part “'lL / / -1 Ilde each of the two borders 58-59, that is 62-63 slightly exceeding the front edge 6 * 1 of the bottom 6Ο-61, is provided from the outside transverse edge 65-66, provided with a hole 67-68 used for fixing a plate (cf. FIG. 8 showing in enlarged view a horizontal section of the anterior ends of the two lateral edges) 69-70 provided towards the interior of the locker of a smooth step 71-72. Interdistance 71-72 is adjustable according to the characteristics of the sheet to be passed in the direction of arrow 73 "it is naturally lower than interdistance 62-63 and easily adjusted thanks to the fact that the steps are provided with a hole 7 ^ -75 whose dimensions in the direction perpendicular to that of arrow 7 and in the plane of the drawing of Figure 8 are less than those of holes 67-68 in the same direction, which can thus serve as a slide for fixing the plates 69-70.

Figure ^ shows a side view of this anterior end, taken along arrow 76, perpendicular to arrow 73 · It can be observed that the plate 70 is provided with two flanges 77—78 framing the upper and lower edges of the flange 65 of so as to prevent any rotation of the said plate 70 around its axis 79 · The plate 70 is secured to the flange 65 via the holes 75-68 can be done in a manner known per se, but preference is given to an elastic means, for example comprising a spring allowing on the one hand the appropriate holding of the plate 70 relative to the rim 65 and on the other hand the manual displacement of the said plate 70 according to the arrow 76 without having to do not disassemble. The modification of the position of the step is thus greatly facilitated. The arron shape. die des redans 71-72 is given only by way of example, other shapes may also be suitable which also fulfill the same dream.

It is not beyond the scope of the invention to give the two plates 69-70 a shape such that the steps 71-72 are slightly convergent downwards, which in turn facilitates the detachment of any sheet by compared to the underlying sheet y.

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It goes without saying that the maximum approximation thus admitted between steps can not reach a value which would risk causing in the last sheets of the packet, a fold which would not disappear after crossing the area of strangulation.

A particular advantage of this part of the device of the invention consists in the fact that it can be "adapted breasts difficulty to a preexisting machine, because it suffices" (Cfr. Fig.b right view) for example to fold the 'anterior end of the bottoms 60-61, in accordance with the reference 80, leaving only a small interval 81 between 61 and 80 to provide the entire device on the bottoms of the lockers with a word \' bottom added Λ pre-existing machine by inserting the front edge of the / clinq ¢ ------ locker of said machine in a pair (left and right)! parts shown in Figure 6 by the slot 81 which ce) parts are provided.

The field of the invention therefore does not only cover a machine provided with the abovementioned improvements, but also the adaptation of these to any machine capable of receiving them, whatever the precise method of fixing said improvements. to the said machines.

The auxiliary device for holding in place an underlying sheet during the starting of the upper sheet can be designed as follows.

The front stop of the rack, against which the sheets are placed is most often interrupted and its central part to allow free passage to the shaft 7. This stop is generally but not necessarily perpendicular to the plane of the bottom of the rack.

The diagram of the device described by way of example in FIGS. 10 and 11, namely in longitudinal section and in rear view, relates to a rack whose slope of the bottom is! of the order of 45 ° · This example has no limiting character i -and the drawing is not to scale.

Either figure 10, the horizontal figure in S2, the fo i.

- - i 5- of a rack is at 83 "the fcrrière stop at 84 (whose position relative to 83 is adjustable in a manner known per se). In 97 is the package of JL'euilles. The lower end of the shaft 7 is twisted at 8 on the rod 5 "(cf. fig. 1). This end 85 which passes between the two lateral parts of the stop 84, has at 86 an inclined zone, reducing its vertical size in the direction of the joint 8.

. The reduction affects the thickness of the shaft 7 essentially on the side of its upper face (also identified 86). At the rear of the stop 84 and bearing on the one hand on the upper face of the shaft by means of a roller 87 and on the other hand on an inclined plane 88 substantially parallel to 84, by means of rollers 89 and 90 "(there are therefore two inclined planes 88, namely one behind each half of the stop 84) a heavy mass 91 which bridges above the pole rests on the said two planes 88 and on the pole. Each plane 88 therefore supports the mass 91 by means of a pair of rollers 89 and 90. This same mass 91 is provided with at least one point 92 adjustable in position by a screw 93 · These points, because most often there are two, are erected on either side of the shaft 7, in front of and between the two stops 84, and they follow the movement of the heavy mass 91 · They are likely to come into contact with the leaves when the inclined zone of lesser thickness 86 allows the mass to descend. The distance between the tip 9 ^ and the stop 84 is as small as possible.

When the stem J is in return movement, the mass 91 is separated at least from the sheet package 97 and the tip 9 ^ remains in contact with the upper sheet. At the end of the downward period, the caster 87 undergoes a movement in the direction of the arrow 95 due to its contact with the inclined zone 86 and the tip 9 ^ leaves the contact of the upper leaf.

When the stroke of the shaft 7 resumes upwards, the caster 87 is again on the zone 86 which immediately allows the tip 94 to resume self-contact, blocking with the sheet immediately underlying its ex - /; very lower edge, and keep this contact, because the upper longitudinal profile of the pole does not allow any movement; TT ................ '..... 1

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wheel 87 between zone 86 and the inner end of the shaft.

A particular advantage of this device is that i. is easily adaptable to all the inclinations of the bottom of the lockers and can be removed immediately from the locker; his need ceases to be felt. It goes without saying that the po: tion of the zone 86 as well as its profile in length are to deten ner and to adapt in each specific case, and in particular poi to take account of the variations' of the inclination of the pole 7 ai as and as the package leaves.

This auxiliary device is also represented in FIG. 11 along the arrow (fig. 10), as seen from the joint 8. We can easily see the mass 9 bridging above the pole 7 "the bottom 100 connecting the wall 88 to 8k as well as two guide plates $ 8-99 allowing with sufficient clearance the displacement of the mass 91 in a perpendicular to the plane of the bottom 83 of the locker considered.

It should be noted that the speed with which the said shaft should be actuated must be carefully adapted to the characteristics of the leaves, especially when they are very thin.

It is useful to add here that the rear stop 8k is not necessarily perpendicular to the bottom plane 83, that the inclined plane 88 could have a slight curvature to also take into account variations in the inclination of the shafts during of the exhaustion of the packets, and that (Cfr. fig. 9) the redans doors 69 “70 are not necessarily in a plane perpendicular to the plane of the bottom of the rack} slight inclination conferring on their plane, in the long direction! dinal an angle a little more than 90 ° (for example up to 10 with that of the said bottom, would help facilitate the peeling off of the leaves.

Finally, it is recalled that the domain of 1 ventions extends to the above improvements, to their adaptation to any preexisting machine, whatever the op flations to which the leaves are subjected, once they are were extracted from the lockers.

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Claims (12)

1.- Sheet collating machine, and spéinlomen of smooth sheets such as for example sheets of coated, semi-coated, glossy paper, ..., comprising: - a magazine made up of a number of boxes or racks, in number at least equal to that of the sheets to be cleaned, to form a booklet or part of J'as. cell, boxes in which the sheets are stored in bundles by species (according to a defined criterion), in the order in which they will have to follow each other, the booklet to constitute, - an extractor device intended to extract the leaves one by one outside each box to engage them in an assembling device (or collector), which extracting device comprises shafts animated by a back-and-forth movement and which, using skids with which they are provided at their mite end rieure entrain either simultaneously in their extractor movement the upper sheet of each packet in a box (at the rate of one packet per box), or with a time sequence fast enough from box to box to allow, the output of the boxes, by example by means of a collector device at least partial superposition. from sheet to sheet, of all the sheets intended for the. composition of the said booklet, the skids with which the shafts are provided may have a pivot joint about an axis substantially parallel to that of their shaft, but having an articulation allowing them a rotati movement about a horizontal perpendicular or ortho axis I gonal to that of their shank, so that, * fy when the shank moves to extract the upper leaf from the bundles, the said skids have i / -1; - »i] 9 'a rough face ai. contact of said sheets pc lead them, and cjue when moving back t 'said liampe, said pads have a smooth fact (therefore not driving) in contact with the upper or underlying fcuill of the package, - boxes made up of 'a bottom, two side edges whose spacing is generally adjustable in faith tion of the sheets to be assembled, and a rear stop fixed for example on the bottom and whose posit-d s is most often adjustable on this bottom, depending on the length of the sheets to be assembled, characterized in that it simultaneously comprises on the one hand a shoe whose "driving" function is achieved by means of spikes, and on the other hand means for preventing underlying sheet to be dragged by the upper sheet i when it starts. 2, - Machine according to claim 1, characterized in that these means consist of racks whose front parts, or the front ends of the lateral edges con carry a throttling zone for the sheets to be extracted from the racks, that is that is to say an area where the distance between the said front parts or the front areas is less than the width of the sheets, les_.quelles must cross this throttling zone during their path of exit from the lockers. 3, - Machine according to one or other of the claims 1 and 2, characterized in that the shoe of each pole is composed of two distinct parts; - The first comprising a cross member 18 provided in its middle with a pin 26 intended to be introduced into 1 the front end 27 of the shaft 7 "said travei was" provided at its ends with two pivots per- | putting the second part of the skate to turn av around a horizontal axis perpendicular to that 1 Tjb of the shaft, the front face of said cross member etc A, u. J • -, y- provided with elastic stops 56—57 intended for. serve as a support for the second part of the skate, when the latter, turning around the said pivots, takes a so-called "raised" position corresponding to the movement <lowering the shaft 7 "- the second part affecting the shape of a" U ", the two ends of which, each provided with an appropriate hole, are intended to be engaged with a slight clearance in 'said pivots, so that the said second payment can rotate around the said pivots, the central branch of 1 "U" having on its front 3Ö, preferably side of each of its extremiti an extra thickness 39-hQ in a material similar to di foam rubber, as well as two points (or acute: the) 43 ** ^ in one hard material, exceeding the front faces of the extra thicknesses of an adjustable length by an appropriate means and the anointing of the characteristics of the sheets, all in such a way that in the so-called "lowered" position the shoe rests on the first sheet practically only by lei points and in the so-called "raised" position the skate after rotat: of the second part around the pivots forming a body with the first part, rests on the sheets only by the arê or lower edge of the two extra thicknesses 39- ^ 0 »the back of! face 38 leaning at this time on the elastic stops 56-5 ' 4. Machine according to claim 3, characteristic in that the needles are made of quartz, 5. Machine according to claim 3t characterized in that the needles are metallic, and preferably made of steel and / or tungsten carbide. 6. Machine according to one and / or the other of the resale cations 1 to 3 "characterized in that the means for preventing any underlying sheet from following by training the leaf the upper, to start and exit from its locker, consist in that the front part or the ends of the hard bo: I lateral of the locker containing the sheets have "T3 each> a narrowing zone (71-72), such as in this / - - :. 0 - * ► where the distance between the two borders is less than the width of the sheets, the said areas of narrowing preferably being in the space of one another. 7 · - Machine according to claims 2 and / or 6, characterized in that the extent of the narrowing is adjustable by any suitable means. 8.- Machine according to one or other of the claims 2, é or 7 "characterized in that the Iment shrink zones are particularly smooth. 9. Machine according to one and / or the other of the claims 1 to 8, characterized in that the means for preventing any underlying sheet from following by drive the upper sheet to be started and taken out of its locker consist of a pressure member 92, bearing on the extreme rear edge of said underlying sheet, member including the comnm! de is, by any means known per se, synchronous with the start of the shaft 7 in its forward stroke. 10. “Machine according to claim 9 characterized in that the pressure member consists of points 94, preferably of the kind of those lining the pad of the lmmpè, point secured to a mass 91 of appropriate weight. 11, - Machine according to either of claims 9 and 10, characterized in that the pressurization of the underlying sheet by said spikes is adjusted by 1 weight of said mass, the displacement of which in the direction of the exercise of said pressure or in the opposite direction is corner mandé by the pole itself, preferably thanks to an appropriate longitudinal profile 86 of the upper face of said pole, on which said mass is supported, for example by the medial integer of a roulette. 12. Assembling machine as described and represented above 13 * ”Assembling machine to which one or the other of the improvements as described, sines or claimed above would have been applied. j - .7 ”l J ï