DE2209561A1 - Stacking device - Google Patents

Description

Arenco-P.M.B. ÜT.V., Kanaaldi.ik 5, Best, Netherlands "Stacking device"

The invention relates to a device for stacking sheet-shaped Objects, e.g. tobacco leaves, with a conveyor » the one with a wing on its underside the " Objects one after the other or in groups to one another Extinguishing point and one at this leakage point below this The supporting surface of the table on which the objects are placed be piled up. · R

It is the object of the invention to provide a cino device in which the table for the trouble-free feeding of the objects to the extinguishing parts on the underside of the conveyor is movable up and down and in which the table can also be adjusted to the height of the stack can. ...... ·.

The invention creates a device for this purpose in which this table can be moved up and down in a mechanism and this keehunisipus is designed so that during the movement of a stack of the? /. Offered et between those in esine highest Gtel3i ".rj ^ ßübraohtcn table \\ n. (i the conveyor per Kub to vm ^ e üie 'S) io) iii de" object aunimmt.

BATH ORIGINAL

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The advantage of this is that an object is at the point of erasure each falls over an almost equal distance on the table or the stack formed on this table, so that the objects come to lie loosely on top of each other, which is important for the subsequent processing of the objects, especially when it concerns parts of tobacco leaves. Because when these parts are stacked compactly on top of each other, they are afterwards difficult to separate from each other »

A specific embodiment of the device according to the invention is characterized in that the mechanism has a holder for this table that can always be moved up and down with the same stroke includes that this table is vertically adjustable with respect to this holder and that the mechanism with drive means is provided that with each stroke of the holder the table with respect to this holder approximately over one of the thickness of the objects corresponding distance moved downwards.

Around the support surface of the table continuously in a horizontal position To hold the position, it is advantageous that the holder carrying the table is driven by a parallel guide, In addition, according to the invention, the drive means are designed as a freewheel mechanism formed, which has a drive derived from this parallel movement.

One embodiment of the device according to the invention exists in that between the table and the holder a rack and a pinion engaging in the same are arranged and daas

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• the free-running Aeciianism from sv; ei working in the same direction, There is one overrunning clutch arranged on the pinion axis, one of which with the parallel guide and the other with the Holder is coupled »In this way one can realize very small movements of the table in relation to the holder.

After the desired stack has been formed, it is preferable to return the device to its starting position as soon as possible bring back. For this purpose compression springs are arranged between the table and the holder and are both in the coupling between the one overrunning clutch and the parallel guide as in the coupling between the other overrunning clutch and the Holder provided a locking device. Haeli solution of both pawls the springs push the table back to its highest position with respect to the holder.

In a preferred form of control, there is each locking device from a pawl and a ratchet wheel attached to the overrunning clutch, so that at ^ any point on the table in relation on the holder, the coupling between the overrunning clutches and the parallel guide or the holder can take place.

In order to be able to regulate the adjustment of the table per stroke of the holder, the coupling between the parallel guide and the a Proilaufkw.pluna adjustable, so that a limited AnpaosuTjf: öor device to the thickness of the items to be stacked possible: is.

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Finally, it is beneficial to hold the table while moving backwards to dampen in the starting position so that the table returns evenly to the starting position. To this The purpose is a piston-cylinder damping system between the holder and the table arranged.

The invention is based on a drawing of an embodiment the inventive device explained in more detail. Put it dar:

Figure 1 is a diagram of an embodiment of the device.

FIG. 2 shows a side view, partly in section, of a further embodiment of the device.

FIG. 3 is a front view of the device of FIG.

Figure 4 is a side view of a detail of the device of Figure 2, in which the holder with the drive means is shown is.

Figure 5 is a front view partly in section of a detail of Figure 4.

In Figure 1 weid = n on the underside of a conveyor, in this case on the lower run of a suction belt 1, the objects 2 are fed from right to left. In the area of the hole, through your Letter L indicated, the items are on a below of the conveyor arranged table 3 of the device is stacked. A cam 5 driven by a motor 4 moves one about a pivot point pivotable lever 7 via one at one end this lever arranged follower roller 6. Da3 other end of the lever 7 is coupled to a guide rod 8 of the table 3, σο that by the rocking motion of the plane 7 the o ^ isch 3 up and down wotft. The i'olßrollo 6 works cbonifiilla with one next to it

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Arranged cam disc. Sliding piece 9 together, one in has an inclined upper surface with respect to the horizontal. The sliding piece 9 has a rack on the lower side, in which a pinion engages. The pinion is driven by a locking device, e.g. also by the cam disk 5 can be moved by placing the pawl of the locking device on one attached to the cam disc, concentrically around the Axis of rotation of this disc is attached to movable pin.

Increasing the distance between the table 3 and the conveyor 1, when the table is in a highest position associated with each stroke, is brought about as follows. In Figure 1 is the table 3 is shown in the almost highest attainable position, By turning the cam disk 5, the table will move downwards and then upwards again, while the same Time the sliding piece 9 will be moved to the left by the locking device. This means that in a particular Position of the cam disc pushes the pole roller 6 against the inclined surface of the sliding piece 9 and as the disc continues to rotate becomes free from it. As a result, the table 3 will occupy a slightly less high position compared to the previous time, so that the distance between the table and the conveyor belt has increased. As the cam disc continues to rotate, after an up and down movement of the table, the sliding piece keep pushing, so that after each stroke of the tinch by one smaller amount is raised. Of course, the adjustment of the table, the feed speed and the Angle of inclination proportional to the sliding piece. Your again Formation of a next stack musa the sliding piece ■ be pushed back again.

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In FIGS. 2-5, a further embodiment is shown Device shown. On the same, the object 2 in Figure 1 is also on the underside of a conveyor 1 from right to fed to the left and released at an extinguishing point I above a table 3 «

The table 3 is fastened to the table by means of a holder 10, through the holder 10 guided guide rods 8 supported, see figure 3

The holder 10 is on by means of a parallel guide 11 which is attached to the pins 12 on a frame, not shown and from movable. This movement can, for example, be brought about again by means of a cam mechanism whose cam disk 5 attached to a drive shaft of an unspecified motor is, the follower roller 6 on one on the upper rod

.11
the parallel guide / ^ elcuppelten lever is arranged.

The downward movement of the table 3 with respect to the holder 10 becomes in this embodiment by a rack 13 arranged below the table, which is arranged with a in the holder Pinion 14 interacts, see in particular FIG. 5 and through Drive means, generally designated 15, brought about.

These drive means 15 consist of two each at one end of the overrunning clutches 16 and 17 » The two overrunning clutches work in the same direction, i.e. that they take the pinion axes with them in one direction of rotation, while in the other direction of rotation they are free around this axis can turn. In this connection it should be noted that between the Ritzöleehse and every Frcsiluufkuppl ^ ir '^ one between the Xagern

arranged Abatandshülse is arranged. The connection between the overrunning clutch and the axle is carried out by appropriate Spline connections.

Furthermore, the drive means are provided with two ratchet wheels 18 and 19, each of which leads to an overrunning clutch 16 and 17, respectively and can be made in one piece with the housing. together.

The pawl 20 is connected to a lever 22 pivotable about the axis line of the pinion axis, which is connected at its free end to a lever 23 connected to the upper rod of the parallel guide, see also FIG. 4. The pawl 21, however, is with the holder 10 connected.

The coupling of the pawls 20 and 21 with the ratchet wheels 18 and 19 wildly maintained by brackets 24 and 25 respectively «The bracket is pivotable about a pin 26 arranged on the lever 22 at a distance above the pinion axis. The lever 25, however, is on a shaft 27 rotatably arranged in the holder 10. The other end of the axle 27 is provided with a crank 28 whose The pin is supported on a part of the bracket 24 that is extended above the pin 26.

Finally, two compression springs 29 are arranged between the table 3 \ * nd the holder 10, which are arranged around the piston rod of a piston that can be moved back and forth in a cylinder 30. The effect wines of the device int the following ₀

At the moment when eng βψ $ Ψ cF? WWifö ^{mlii Ζ} * ^ ^{Λ ejri 021} ^ iPP l ^{; o} 8

Tobacco leaf, on the underside of the conveyor 1 at the L <'jscli3telle L is reached, the table 3 is in the highest position. This position is achieved in that the table 3 is initially as high as possible in relation to the holder 10, i.e. that the piston rods are pressed as far as possible out of the cylinders 30 are. In addition, the drive of the cam disk 5 is synchronous with the supply of the objects on the underside of the conveyor 1, so that when the object 2 has reached the extinguishing point L, the cam disk 5 depressed the cam follower 6 and thereby the holder 10 in the highest position via the parallel guide 11 brought. If a suction belt is used as the conveyor 1, the suction effect is canceled in this highest position of the table and the object 2 will fall onto the support surface of the table 3. Then by turning the Drive shaft of the cam 5 of the holder 10 and thus the table 3 move down. In this way the holder assumes two extreme positions, of which the lower position is uninterrupted Lines and the upper position is indicated in dashed lines in FIG.

From the parallel movement of the holder 10, the drive is from your Adjustment mechanism 15 derived. For this purpose is with the upper rod of the parallel guide 11 outside the pivot point a lever 23 is coupled to this rod and the holder. This coupling can, for example, by means of a pin-type connection be adjustable. If now the holder moves up and down, this eccentric coupling of the lever 23 is at the top Parallel 3tange of these levers move with respect to the holder 10, and u was between two positions, which in FIG. 4 are uninterrupted Line l> aw. indicated in a dotted line Bind For this purpose it is important to know that the clarity is done

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Drawing of the holder 10 is shown as a stationary lower part and only the relative extreme positions of the Parallel guidance are indicated with respect to this holder.

Weil.der lever 23 is coupled to lever 22 at its free end the latter will pivot 3ich about the axis line of the pinion axis, causing the pawl 20 to move back and forth will perform. The pawl 20 transmits this reciprocating movement to the ratchet wheel 18. This reciprocating movement of the Ratchet wheel 18 is only transmitted on one side through the interposition of the overrunning clutch 16 to the pinion axis of the pinion 14, because the overrunning clutch is coupled to the pinion axis in one direction and freely around it in the other direction Axis can rotate. Se3. Of course, the direction of work is One-way clutch selected so that the table with each stroke downward over a certain distance with respect to the holder 10 is moved, i.e. the pinion will then rotate intermittently in the direction of the arrow in Figure 4.

However, by having compression springs 29 between the table and the holder are arranged, when the ratchet wheel 18 is rotated in the direction opposite to that of the arrow in FIG Pinion strive to turn back over the same distance. The overrunning clutch is used to prevent this 17 at the other end of the pinion axis. Because this overrunning clutch works in the same direction as the other overrunning clutch possesses, when the one-way clutch 16 is turned back, the one-way clutch 17 will inhibit the pinion axis and thereby the pinion prevent it from turning back. The displaced position of the Tiacheo 3 in relation to the holder 10, which has once been assumed, thus remains maintained and on this ¥ / o: iao is made with each stroke of the holder

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the table closer to the holder via a certain subscription be moved away. This continues until the desired one Stack height is reached, after which the device can be shut down.

After removing the stack of objects from the table 3, it is preferable to bring this table back into the upper position in relation to the holder 10 as quickly as possible. 19 to be lifted. For this purpose, it is only necessary to lift the bracket 25 from the plane of drawing, see Figure 5, d _o h. forward, and this is over the axis

27 moves the crank 28 backwards. The crank pin of the crank

28 takes the extension piece of the bracket 24 with it to the rear, whereby the bracket 24 also moves forward out of the plane of the drawing in FIG. The pressure point of the bracket against the pawls is thus on the bevelled lower side of the pawls, see Figure 4, whereby each pawl can move freely down and out of the ratchet _e Any connection between the ratchet wheels, in other words between the pinion and the parallel guide 11 or the holder 10 is interrupted in this way. The table is then supported by the compression springs

29 pushed back into the starting position. The movement is dampened by the piston in the cylinder 50.

By choosing a pawl and a ratchet wheel locking device as e3 iot now possible quickly bring a lock because the ratchet wheel can engage the ratchet at almost any location dea Umfatigs. Of course, the brackets 25 and 24 must be returned to their original position

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be brought back, which can be done by the Bracket 25 is pushed back into its original position, after which the bracket 24 by the omission of the crank pin the crank 28 and by the action of the spring 31, see Figure 4-, can fall back.

The device is now ready for stacking the next one Number of items »

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Claims (8)

PATBHTA HSP KUECHB
Jit device for stacking sheet-like objects, e.g. tobacco leaves, with a conveyor that brings the objects one after the other or in groups to an extinguishing point and a table at this extinguishing point below this wing, on which the objects are stacked are dadu rch ge kennzei seframe that this table by means of a mechanism up and down movable and this mechanism is designed so that during formation of a stack of the distance between the accommodated in its highest position table and the conveyor per stroke by about Thickness of the object increases. 2. Apparatus according to claim 1, characterized in that the mechanism includes a holder for this table that can be moved up and down with the same stroke, that this table is vertically adjustable with respect to this cold and that the mechanism is further provided with drive means which with each stroke of the holder moves the table downwards in relation to this holder approximately over a distance corresponding to the thickness of the object. 3. Device according to claim 2, characterized in that the holder is driven by a parallel guide and dasa the drive means as a likewise? freewheel mechanism driven by this parallel guidance are formed. 4. Apparatus according to claim 3, characterized in flckßiinz calibration . daoo • hon the Ti och and the Halt or eirjo rack and a 209840/0640 are arranged in the same engaging pinion and that the pre-run mechanism consists of two working in the same direction, There is freewheeling clutches arranged on the pinion axis, one of which is with the parallel guide and the one other is coupled to the holder. 5. The device according to claim 4, characterized in that compression springs are arranged between the table and the holder and a locking device is provided in the coupling between the one overrunning clutch and the parallel guide as in the coupling between the other overrunning clutch and the holder. 6. The device according to claim 5, d adur ch characterized in that each locking device consists of a pawl and a ratchet attached to the overrunning clutch. 7. Device according to one of claims 3 · -6, dadur ch geke nnζ eich net that the coupling between the parallel guide and the overrunning clutch is adjustable ο 8. Device according to one of claims 2-71 da_durch_gekerjn_ze ic hne _T t that a damping device, in the form of a piston and cylinder, is arranged between the table and the holder. 209840/0640