EP3414198A1

EP3414198A1 - Insert-sheet pick-up device, loading device, copy-receiving station and machine for processing elements in sheet form

Info

Publication number: EP3414198A1
Application number: EP17703029.3A
Authority: EP
Inventors: Patrice Chatry; Ludovic Cuennet; Maude STEINER
Original assignee: Bobst Mex SA
Current assignee: Bobst Mex SA
Priority date: 2016-02-12
Filing date: 2017-02-07
Publication date: 2018-12-19
Anticipated expiration: 2037-02-07
Also published as: EP3414198B1; KR102116625B1; JP6790106B2; BR112018015539A2; JP2019504808A; CN109071143B; WO2017137169A1; ES2797086T3; US20190047807A1; US10913624B2; CN109071143A; KR20180110065A; BR112018015539B1

Abstract

The invention relates to an insert-sheet pick-up device (13) for an insert-sheet loading device (10) of a station for receiving copy (500), the pick-up device (13) comprising a suction element (20) configured to pick up an insert sheet, characterized in that the pick-up device (13) comprises a pivoting axis (30) and at least one telescopic arm (33) comprising a proximal arm (33a) one end of which is fixed to the pivoting axis (30) and a distal arm (33b), able to move with respect to the proximal arm (33a) and one end of which is pivot-articulated to the suction element (20) so as to move the suction element (20) between a raised position and a lowered position according to a vertical movement of the suction element (20). The present invention also relates to an insert-sheet loading device, to a copy-receiving station and to a machine for processing elements in sheet form comprising said insert-sheet pick-up device.

Description

INPUT SHEET ENTRY DEVICE, LOADING DEVICE, POST RECEIVING STATION, AND SHEET-FORMED ELEMENT PROCESSING MACHINE

The present invention relates to an insert sheet capture device for inserting between stacks in a receiving area of a poses receiving station. The present invention also relates to an insert sheet loading device, a post receiving station and a sheet-like processing machine having said inset sheet gripping device.

In the receiving stations, the separation of the poses consists, after shaping and complete ejection of the waste, to break the points of attachment between the poses of a sheet by means of an upper male tool and a lower female tool mounted vertically one above the other in the sheet receiving area. The upper tool consists of pushing elements slightly smaller than the perimeter of the poses. The lower tool consists of a grid whose mesh shape generally corresponds to the perimeter of the poses. The poses fall through these meshes and pile up in vertical stacks in the reception area.

To form stacks of separate and stable poses under these tools, on the reception pallet of the station, a periodical insertion of a stabilization sheet is necessary. Insertion involves placing an inset sheet, such as a solid sheet, between stacks of poses. In order that this insertion can be carried out without requiring a concomitant stoppage of the production unit, a device commonly known as a non-stop receiving grid is used.

To perform an insert operation, an inset sheet is entered on a stack of inserts arranged near the receiving area. The inset sheet is then dropped onto the non-stop receiving grid. The non-stop receiving grid carrying the inset sheet then moves under the lower parting separation tool. Then, the non-stop receiving grid returns above the stack of inserts to receive a new sheet. On leaving the receiving zone, the grid crosses the teeth of a comb that has pivoted in the retaining position to retain the inset sheet and thus the poses stacked on this inset sheet, in the receiving area. The non-stop receiving grid thus allows the insertion of an insert sheet between the stacks and the support of the poses during the evacuation of the stacks of stacks without stopping the production.

The capture of the inset sheet and its removal on the non-stop receiving grid is generally performed by means of a suction device. An example of a known vacuum device comprises a suction bar that can pivot between a low position in which the suction cups seize the edge of an inset sheet and a high position to lift the sheet and then release it on the non-stop receiving grid. This device has the advantage of being compact, in particular, the space requirement of the suction cup bar in the up position is compatible with the residual space located beneath the discharge mat of the evacuation station, itself located above the insert sheet loading system.

However, the inset sheet entry area shifts from the edge of the sheet with the lowering of the stack height due to the mowing motion of the suction bar. The smaller the height of the stack of inserts, the more the input area deviates from the edge of the sheet, which increases as the depth of the stock bins increases. The positioning of the inset sheet can then become imprecise. The inset sheet can be shifted to the non-stop receiving grid, and then shifted between the poses of the stack. The correct positioning of the inset sheet between the stacks of poses is then no longer guaranteed.

One of the aims of the present invention is to provide an improved inset sheet capture device for gripping the inset sheet in the same gripping area, with a small footprint, regardless of the height of the stack of sheets. 'insert.

For this purpose, the subject of the present invention is an insert sheet gripping device for insert sheet loading device of a poses receiving station, the gripping device comprising a suction element configured to grip an insert sheet, characterized in that the gripping device comprises a pivoting axis and at least one telescopic arm comprising a proximal arm whose one end is fixed to the pivoting axis and a distal arm movable relative to the proximal arm and one end of which is pivotally articulated with the suction element to move the suction element between a high position and a low position in a vertical movement of the suction element.

The combination of the pivoting movement of the telescopic arms and their lengthening / shortening allows a vertical movement of the suction element between the high and low positions. The input area can thus be made always in the same place of the inset sheet, to ensure that the inset sheet is well positioned for the inserting operation. This inserts sheet gripping device therefore takes up little space while allowing to lower the suction element sufficiently low in the tray housing to grasp an inset sheet at the bottom of the tray. Such an arrangement reduced size is simpler and more economical to achieve than to provide for example a movable tray vertically depending on the height of the stack contained.

According to one or more characteristics of the input device, taken alone or in combination:

the telescopic arm extends when it pivots in the low position,

in the high position, the telescopic arm is in a position close to the horizontal,

the grasping device comprises at least one element for controlling the elongation of the distal arm as a function of the pivoting angle of the pivoting axis, configured to cooperate with the distal arm of the telescopic arm,

the control element comprises linear or curved guidance,

the control element has an inclined groove,

the positioning of the distal arm in a first position of the groove corresponding to a minimum elongation of the telescopic arm in the high position,

positioning the distal arm in a second position of the groove corresponding to a maximum elongation of the telescopic arm in the low position, the telescopic arm having pivoted by a predetermined maximum angle between the first and the second position, and

the hypotenuse of a right triangle whose one of the catheters corresponds to the extension of the telescopic arm on said predetermined maximum angle forming part of said groove,

one of the arms of the distal arm and the proximal arm comprises at least one oblong hole with linear guide, cooperating with at least one pin carried by the other arm to modify the length of the telescopic arm,

the proximal arm comprises a double wall sandwiching the distal arm,

the suction element comprises at least one pivoting suction head,

the suction element comprises a suction bar,

the gripping device comprises two telescopic arms whose respective ends are pivotally articulated with a respective end of the suction bar,

the gripping device comprises at least one actuator configured to drive the pivoting pivot axis,

- the actuator is configured to stop automatically under the effect of a counter- effort,

the actuator is configured to move a first end of a lever whose second end is fixed to the pivoting axis.

The invention also relates to an insert sheet loading device, characterized in that it comprises an inserts sheet capture device as defined above.

The invention also relates to a station for receiving the poses of a sheet-like processing machine, characterized in that it comprises an inserts sheet loading device as defined above.

The invention also relates to a sheet-like processing machine, characterized in that it comprises a station for receiving poses as defined above.

SUMMARY DESCRIPTION OF THE DRAWINGS

Other advantages and characteristics will appear on reading the description of the invention, as well as on the appended figures which represent a non-limiting exemplary embodiment of the invention and in which:

FIG. 1 very schematically illustrates an example of a machine for processing sheet-shaped elements.

FIG. 2 shows a first exemplary embodiment of an inset sheet loading device, arranged next to a poses receiving area, with a non-stop receiving grid located in the receiving area and a device inset sheet capture in the up position.

Figure 3 is a view similar to Figure 2, with the non-stop receiving grid located above a reserve of inserts sheet stock.

Figure 4 shows a perspective view of the gripper of Figure 2 in the low position.

Figure 5 shows a perspective view of the gripper of Figure 2 in the up position.

Figure 6a shows a side view of elements of the gripper of Figure 2 in the up position. Figure 6b is a view similar to Figure 6a with the gripper in the down position.

FIG. 7 is a schematic view illustrating the geometrical relationship between the pivot angle of the telescopic arm, the extension of the telescopic arm, the orientation and the dimension of a groove of a control element of the elongation of the arm distal of the grasping device of FIG.

FIG. 8 shows a second exemplary embodiment of an insert sheet loading device with a non-stop receiving grid and an inserting device in the extended position.

In these figures, the identical elements bear the same reference numbers. The following achievements are examples. Although the description refers to one or more embodiments, this does not necessarily mean that each reference relates to the same embodiment, or that the features apply only to a single embodiment. Simple features of different embodiments may also be combined or interchanged to provide other embodiments.

The longitudinal, vertical and transverse directions indicated in FIG. 2 are designated by the trihedron (L, V, T). The transverse direction T is the direction perpendicular to the longitudinal direction of displacement D of a sheet, as illustrated by the arrow D in FIGS. 1 and 2. The horizontal plane corresponds to the plane (L, T).

The terms upstream and downstream are defined with reference to the longitudinal direction of displacement D. The sheets move from upstream to downstream, generally following the longitudinal principal axis of the machine, in a movement clocked by periodic stops.

The terms "flat elements" and "sheets" will be considered equivalent, and will include both corrugated and cardboard components, paper or any other material commonly used in the packaging industry. It is understood that throughout this text, the terms "sheet" or "sheet element" or "sheet-shaped element" refer very generally to any sheet-like printing medium such as, for example , sheets of cardboard, paper, plastic, etc.

Fig. 1 shows an example of processing machine 1 for sheet processing. This processing machine 1 is conventionally composed of several workstations which are juxtaposed but interdependent one by one to form a unitary unit. There is thus an introduction station 100, a margin table 200, a transformation station 300 for cutting sheets, such as comprising a platen press 301, a waste ejection station 400, a station for receiving the blanks 500 where the transformed sheets are reconditioned into a stack and the cut sheet waste is removed.

The transformation operation of each sheet takes place in the transformation station 300, for example between a fixed plate and a lower movable plate of the press 301 for cutting the sheets according to a matrix corresponding to the developed form which is wishes to obtain, for example to obtain a plurality of boxes of a given form. The movable platen rises and lowers successively once during each machine cycle.

A transport device 70 is further provided for individually moving each sheet from the output of the margin table 200 to the receiving station of the stands 500, through the processing station 300 per press.

The transport device 70 comprises a plurality of transverse bars provided with clamps, commonly known as gripper bars 75, each of which, in turn, grip a sheet at its front edge, before successively pulling it into the different stations of the stations 300, 400, 500 of the machine 1.

The ends of the gripper bars 75 are each respectively connected to a side chain forming a loop, commonly called a chain train 80. Two chain trains 80 are thus arranged laterally on each side of the gripper bars 75.

By means of a movement transmitted to the chain trains 80, the set of gripper bars 75 starts from a stopped position, accelerates, reaches a maximum speed decelerate and then stops, thus describing a cycle corresponding to the displacement of a sheet from a workstation to the next workstation. The chain trains 80 move and periodically stop so that, during each movement, all the leaf gripper bars 75 are moved from one station to the adjacent downstream work station. Each station performs its work in synchronism with this cycle, which is commonly called a machine cycle. Workstations are in the initial position to start a new job at the beginning of the machine cycle.

The number and nature of the treatment stations in a processing machine 1 may vary depending on the nature and complexity of the operations to be performed on the sheets. In the context of the invention, the concept of processing machine thus covers a very large number of embodiments because of the modular structure of these sets. Depending on the number, the nature and the arrangement of the workstations used, it is indeed possible to obtain a multitude of different processing machines. It is also important to point out that there are other types of workstations other than those mentioned, such as embossing, crushing or stamping stations for embossing machine for stamping machine or hot foil stamping machine ("hot foil stamping "in English) where one makes between the plates of a press, the removal on each sheet, patterns from a film from one or more strips to stamp. Finally, it is understood that the same processing machine may very well be equipped with several stations of the same type.

In the receiving station 500, after forming in the processing station 300 and ejection of waste in the waste ejection station 400, the attachment points between the poses of a sheet are broken by means of a upper male tool and a lower female tool vertically mounted one above the other in a receiving zone 2 shown in Figure 2.

The upper tool consists of pushing elements slightly smaller than the perimeter of the poses. The lower tool 3 is formed of a grid whose mesh shape generally corresponds to the perimeter of the poses. In the example, the lower tool 3 comprises longitudinal and transverse bars forming a square mesh grid. The poses fall through the meshes of this grid and stack in vertical stacks in the reception zone 2 on a reception pallet 4 carried by a frame 501 of the station 500, vertically movable.

The receiving station of the poses 500 comprises a loading device 10 of insert sheets, fixed to the frame of the machine 1. Insertion consists in arranging an inset sheet, such as a solid sheet, between stacks of poses in the reception zone 2.

The loading device 10 comprises a tray 11 for insert sheet stock, a non-stop receiving grid 12, a gripper 13 for inset sheets and a retaining comb 14 pivoting.

The tray 11 has a housing 9 for receiving a stack 8 of insert sheets. The tray 11 is movable in translation in the transverse direction T to be recharged by an operator through a window of the frame 16 of the loading device 10, from one side of the loading device 10. The tray 11 can be mounted on two rails transverse 15 and have a handle, such as a drawer.

The non-stop receiving grid 12 is movable in translation in the longitudinal direction of movement of the sheets D between a position retracted above the tray 11 to receive an inset sheet (FIG. 3) and an exit position for insertion. of the inset sheet in the receiving zone 2 (Figure 2). The non-stop receiving grid 12 comprises at least one cross member carrying a plurality of longitudinal bars. The ends of the cross member are for example provided with rotating rollers, cooperating with longitudinal slideways 17 carried by the frame 16. The drive in translation of the receiving grid 12 is provided by two chains 18 driven by a motor (not visible) , controlled by a control unit 7 of the processing machine 1, to program an insert when the stack of poses reaches the desired height.

The retaining comb 14 has teeth regularly spaced in the transverse direction. The comb 14 is pivotally mounted about a transverse axis interposed between the tray 11 and the receiving zone 2 of the poses. The comb 14 is pivoted between a retaining position in which the teeth of the comb 14 pass between the longitudinal bars of the non-stop receiving grid 12 and a released position in which the teeth of the comb are retracted.

The inset sheet gripping device 13 is arranged above the non-stop receiving grid 12 when the latter is in the retracted position. The gripper 13 is configured to lift an insert sheet into the inset sheet supply tray 11 and to deposit the raised insert sheet on the non-stop receiving grid 12 as it moves into position. returned above the bin 11.

The insert sheet gripping device 13 comprises a suction element 20 configured to grip an insert sheet and has a carrier 21 for mounting on the frame 16 of the loading device 10, for carrying and moving the suction element 20 to or away from the stack 8 of inserts. The support 21 can be mounted in longitudinal sliding on the frame 16 to adapt the longitudinal positioning of the gripping area in the format of the inserts.

The support 21 comprises a pivoting axis 30 and at least one telescopic arm 33. The telescopic arm 33 comprises a proximal arm 33a whose one end is fixed to the pivoting axis 30 and a distal arm 33b, movable relative to the proximal arm 33a in the main direction of the proximal arm 33a. One end of the distal arm 33b is pivotally articulated with the suction element 20 to move the suction element 20 between a high position (Figure 6a) and a low position (Figure 6b).

The rotation of the pivoting shaft 30 causes the extension or the shortening of the telescopic arms 33. The combination of the pivoting movement of the telescopic arms 33 and their elongation / shortening allows a vertical movement of the suction element 20 between the high and low positions. In particular, the telescopic arm 33 is extended when it pivots in the low position. In addition, the telescopic arm 33 may be in a position close to the horizontal in the high position (FIGS. 5 and 6a), that is to say that the telescopic arm 33 is arranged horizontally in the raised position with a possible inclination relative to the horizontal less than +/- 5 °, which limits the size of the gripper 13 in the high position. Such an arrangement has a small footprint and is simple and economical to achieve.

The suction element 20 is connected to a vacuum source, such as a vacuum pump or a Venturi device, for example by means of hoses borne on the one hand by a flexible holder 19 in the shape of a "U" shape. Of the support 21 and on the other hand, by a housing 25 of the support 21. The housing 25 is for example fixed to the pivoting axis 30. The hoses allow to adapt the length of the pipes to the high or low position of the suction element 20. The hose holder 19 facilitates the guiding of the hoses, especially when the support 21 slides on the frame 16. The housing 25 allows to accommodate an excess length of flexible to allow their extension when the gripper 13 is in the low position. The housing 25 is for example arranged in the center of the pivoting axis 30.

The vacuum source is controlled by the control unit 7 to establish a low suction pressure in the suction element 20 or to stop aspiration.

The suction element 20 has one or a plurality of suction heads 23, such as suction cups. The suction cups have a soft cap which can be held by the pressure of the air on the surface of the inset sheet.

The suction heads 23 may be pivotally mounted about a transverse axis so that the gravity and / or the suction force can correctly orient the suction heads 23 flat against the inset sheet.

According to an exemplary embodiment, the suction element 20 comprises a suction bar comprising a transverse bar 22 perpendicular to the longitudinal direction of movement of the sheets D. In the example illustrated in FIG. suction 20 comprises a suction bar provided with five suction heads 23 arranged symmetrically and pivotally mounted in the transverse bar 22.

As can be seen in Figures 2 to 5, the support 21 comprises for example two telescopic arms 33 whose respective ends are hingedly pivoted with a respective end of the suction bar, which gives a better rigidity to the system and facilitates the alignment of the suction heads 23. The suction element 20 comprises for example a cylindrical pin 24 at each end cooperating with a complementary orifice formed in the end of the distal arm 33b. The telescopic arms 33, the pivot axis 30 and the suction bar 20 form a substantially horizontal frame in the raised position (Figure 5).

One of the arms of the distal arm 33b and the proximal arm 33a has at least one linearly guided elongate hole 34 extending in the main direction of the proximal arm 33a, such as a groove. The slot 34 cooperates with at least one pin 35 carried by the other arm, to change the length of the telescopic arm 33, that is to say lengthen or shorten the length of the distal arm 33b relative to the proximal arm 33a. In the example illustrated, the proximal arm 33a comprises for example two elongate holes 34 aligned cooperating with a respective pin 35 of the distal arm 33b. The length of the oblong holes 34 is for example between 30 and 50mm, such as of the order of 40mm.

Other embodiments may be envisaged for the at least one telescopic arm 33. For example the distal arm 33b is slidably movable relative to the proximal arm 33a by means of a rail carried by the proximal arm 33a or by the arm distal 33b, the other arm carrying a complementary rib. In another example, the distal arm 33b is movable interlocking in the proximal arm 33a, the distal arm 33b and the proximal arm 33a having for example complementary cylindrical shapes.

The support 21 may further comprise at least one at least one control element 36 of the elongation of the distal arm 33b depending on the pivot angle of the pivoting axis 30, configured to cooperate with the distal arm 33b of the arm telescopic 33. The control element 36 comprises for example a linear or curved guide.

The control element 36 comprises for example a cam follower and a cam, one being carried by the distal arm 33b, the other being fixed to the transverse beam 38 (not shown). The cam follower is biased against the cam, the cam surface defining the elongation of the distal arm 33 as a function of the pivot angle of the pivoting axis 30.

According to another example visible in FIGS. 6a and 6b, the control element 36 comprises an inclined groove 39, which is particularly simple to achieve in order to obtain the vertical movement of the suction element 20. The groove 39 is extends along a line forming an angle for example between 25 ° and 55 ° with the vertical.

According to an exemplary embodiment, the inclined groove 39 is formed in a plate 37, fixed to the transverse beam 38 of the support 21. The inclined groove 39 cooperates with a protrusion 40 carried by the end of the distal arm 33b. More specifically and as shown schematically in Figure 7, the positioning of the distal arm 33b in a first position 39a of the groove 39 corresponds to a minimum elongation of the telescopic arm 33 in the high position. The positioning of the distal arm 33b in a second position 39b of the groove 39 corresponds to a maximum elongation of the telescopic arm 33 in the lower position, after the telescopic arm 33 has pivoted by a predetermined maximum angle a between the first and the second position. . The hypotenuse of a right triangle T whose one of the catheters, the longest b, corresponds to the elongation a of the telescopic arm 33 on said predetermined maximum angle a fits into said groove 39.

Each proximal arm 33a is for example formed by a double wall sandwiching a distal arm 33b, for example by covering the distal arm 33b approximately two-thirds high (Figure 6a). Oblong holes 34 are formed on each wall of the double wall in parallel and cooperate with pins 35 arranged on either side of the distal arm 33b. The plates 37 of the control elements 36 of the telescopic arms 33 are for example interposed between the walls of the double wall of the proximal arms 33a, upstream of the distal arms 33b.

The gripping device 13 may comprise at least one actuator 41, such as a jack, such as a pneumatic jack, configured to drive the pivoting pivot pin 30 (FIG. 5). The actuator 41 is for example configured to stop automatically under the effect of a counter-effort. Thus, when the suction element 20 bears against the stack 8 of insert sheet, the counter-force exerted by the stack 8 is detected by the actuator 41 which stops the rotation drive. The stroke of the actuator 41 can thus be modulated according to the height of the stack 8 of inserts.

The gripping device may comprise a lever 42, the actuator 41 being connected to a first end of the lever 42 whose second end is fixed to the pivoting axis 30. The lever 42 is for example connected to one end of the axis pivoting 30 located on the outer side of the side cheek 32 on which the actuator 41 can be fixed. Operation of the cylinder rotates the lever 42, causing the pivoting shaft 30 to rotate and consecutively, the elongation or shortening of the distal arms 33b.

The pivoting axle 30 pivots for example in bearings 31 fixed to the lateral cheeks 32 of the support 21. It can also be envisaged that the gripping device 13 comprises a first and a second pivoting axle aligned transversely and cooperating with a respective bearing 31 fixed on a respective lateral cheek 32 (not shown). In the latter case, provision is made example that the input device 13 comprises two actuators 41, configured to drive a respective pivot axis.

The operation of the gripping device 13 will now be described with reference to FIGS. 2, 3, 6a and 6b, considering as the starting position the output position of the non-stop receiving grid 12 in the receiving zone 2, at the gap of the tray 11 (Figure 2). The suction element 20 is in the up position (FIG. 6a).

The rotational drive of the pivoting axle 30 (in the clockwise rotation direction in FIGS. 6a, 6b) translates the pins 35 of the distal arms 33b into the oblong holes 34 of the proximal arms 33a and translates the protuberance 40 into the inclined groove 39 of the control element 36, extending the telescopic arms 33. This rotation-elongation combination of the telescopic arms 33 moves the suction element 20 vertically towards the stack 8 of insert sheets in the housing 9 of the tray 11 in the low position (Figure 6b).

The suction element 20 then comes into contact with the edge of the inset sheet at the height where it is in the housing 9. The gripping zone can thus be made always at the same place of the inset sheet. regardless of the height of the stack 8 of inserts. The suction force of the suction member 20 and / or gravity correctly positions the suction member 20 to grip a flat insert sheet. The actuator 41 automatically stops the pivoting drive of the pivoting axle 30 under the effect of this counter-effort.

Once the inset sheet has been entered, the actuator 41 is controlled by the control unit 7 to drive the pivoting axle 30 in the opposite direction, which has the effect of shortening the telescopic arms 33 and lifting the sheet. insert in the upper position by a vertical movement of the suction element (Figure 6a).

The inset sheet can then be dropped onto the non-stop receiving grid 12 on its return from the receiving zone 2 in the retracted position (FIG. 3).

The input area being always carried out at the same place of the inset sheet, it is ensured that the inset sheet is well positioned on the non-stop receiving grid 12.

This insertsheet gripping device 13 therefore takes up little space, even in the high position, which makes it possible to arrange the gripping device 13 under the conveyor belt of the machine 1. The gripping device 13 also makes it possible to lower the suction element 20 sufficiently low in the housing 9 of the tray 11 to be able to grip an insert sheet at the bottom of the tray 11. The non-stop receiving grid 12 carrying the inset sheet then moves under the lower tool 3 for separation of the poses to deposit the inset sheet. The non-stop receiving grid 12 then returns above the stack of inserts to receive a new sheet. Leaving the receiving zone 2, the non-stop receiving grid 12 crosses the teeth of the retaining comb 14 which has pivoted in the retaining position (FIG. 2) to retain the inset sheet and therefore the poses stacked on this inset sheet. The non-stop receiving grid 12 thus allows the insertion of an insert sheet between the stacks of poses and can also make it possible to support the poses during the evacuation of the reception pallet 4 carrying the piles of poses and the insertion of a new reception pallet 4 empty without stopping production.

As can be seen in the second example illustrated in FIG. 8, the invention is not limited to an insert sheet loading device 10 comprising a non-stop receiving grid 12 adapted to perform the operations of inserting but can also be applied to a loading device 10 'provided on the one hand, a non-stop receiving grid of the blanks 50 and, on the other hand, a mobile inserting device 51.

The inserter 51 is movable between a retracted position for receiving an inset sheet and an extended position for removal of the inset sheet in the receiving area 2 between the stacks. The translational drive of the inserter 51 is provided by two chains 18 driven by an actuator, such as a pneumatic linear cylinder (not visible), controlled by the control unit 7 of the processing machine 1, to program an insert when the stack of poses reaches the desired height.

However, in this embodiment, the support of the poses during the evacuation of the piles of poses without stopping the production is carried out by the non-stop reception rack of the poses 50 distinct, located above the inserter 51.

The non-stop receiving grid of the poses 50 comprises a plurality of longitudinal bars. It is movable in the longitudinal direction L between a retracted position in which it is located above the gripping device 13 and an extended position in the receiving zone 2 of the receiving station 500 for receiving the poses during operation. discharge of the pallet receiving 4. The non-stop receiving grid of the poses 50 is also movable vertically by motorized drive to adapt to the accumulation level of the poses. The non-stop receiving grid of the poses 50 of this embodiment does not provide the inserting function. It should also be noted that the invention is not limited to a poses receiving station 500 in which the attachment points between the poses are separated but can be applied to a poses receiving station receiving piles of poses. full leaves.

Claims

1. Insert sheet gripping device (13) for insert sheet loading device (10) of a receiving station (500), the gripping device (13) having a suction element (20). ) configured for gripping an inset sheet, characterized in that the gripping device (13) comprises a pivoting axis (30) and at least one telescopic arm (33) having a proximal arm (33a), one end of which is attached to the pivoting axle (30) and a distal arm (33b) movable relative to the proximal arm (33a) and one end of which is pivotally articulated with the suction element (20) to move the suction element (20) between a high position and a low position in a vertical movement of the suction member (20).

2. Gripping device (13) according to the preceding claim, characterized in that the telescopic arm (33) extends when it pivots in the low position.

3. Gripping device (13) according to one of the preceding claims, characterized in that in the high position, the telescopic arm (33) is in position close to the horizontal.

4. Gripping device (13) according to one of the preceding claims, characterized in that it comprises at least one control element (36) of the elongation of the distal arm (33b) depending on the pivot angle the pivoting axle (30) configured to cooperate with the distal arm (33b) of the telescopic arm (33).

5. Gripping device (13) according to the preceding claim, characterized in that the control element (36) comprises a linear or curved guide.

Gripping device (13) according to one of claims 4 or 5, characterized in that the control element (36) has an inclined groove,

the positioning of the distal arm (33b) in a first position (39a) of the groove corresponding to a minimum elongation of the telescopic arm (33) in the raised position,

the positioning of the distal arm (33b) in a second position (39b) of the groove corresponding to a maximum elongation of the telescopic arm (33) in the low position, the telescopic arm (33) having pivoted by a predetermined maximum angle (a ) between the first and second positions, and

- The hypotenuse of a right triangle whose one of the catheters (b) corresponds to the elongation (a) of the telescopic arm (33) on said predetermined maximum angle (a) inscribed in said groove.

7. Gripping device (13) according to one of the preceding claims, characterized in that one of the arms of the distal arm (33b) and the proximal arm (33a) comprises at least one oblong hole (34) guiding linear, cooperating with at least one pin (35) carried by the other arm to change the length of the telescopic arm (33).

8. Gripping device (13) according to one of the preceding claims, characterized in that the proximal arm (33a) comprises a double wall sandwiching the distal arm (33b).

9. Gripping device (13) according to one of the preceding claims, characterized in that the suction element (20) comprises at least one suction head (23) pivoting.

10. Gripping device (13) according to one of the preceding claims, characterized in that the suction element (20) comprises a suction bar.

1 1. Gripping device (13) according to the preceding claim, characterized in that it comprises two telescopic arms (33) whose respective ends are pivotally articulated with a respective end of the suction bar (20).

12. Gripping device (13) according to one of the preceding claims, characterized in that it comprises at least one actuator (41) configured to drive the pivot axis (30) pivotally.

13. Gripping device (13) according to the preceding claim, characterized in that the actuator (41) is configured to stop automatically under the effect of a counter-effort.

14. gripping device (13) according to one of claims 12 or 13, characterized in that the actuator (41) is configured to move a first end of a lever (42) whose second end is fixed to the pivoting axle (30).

15. Loading device (10; 10 ') inserts, characterized in that it comprises a device (13) for gripping sheets according to one of the preceding claims.

16. Station receiving station (500) of a processing machine (1) of sheet-shaped elements (10), characterized in that it comprises a device for loading (10; insert according to the preceding claim.

17. Machine for processing (1) elements in the form of sheets, characterized in that it comprises a receiving station of the poses (500) according to the preceding claim.