EP1148014A2 - Device for forming piles - Google Patents

Abstract

The machine for forming a stack (24) of flat articles (12) comprises a feeder (1) which delivers the articles one after another to a transfer device (2) with carriers (17) into each of which one article is fed. They are then moved along and released with their broad side outwards to form a row.

Description

The invention relates to a device for forming Stacks, for example, from individual delivered Objects are to be formed. These stacks are said to then be packed. The objects are common flat and are delivered in their longitudinal direction. she should be in the stacks with their flat sides on top of each other lie.

A device of this type is already known (DE 19519707). Here are the consecutively delivered Objects in tangential receiving pockets of a rotating one Wheel inserted and after one turn of the wheel by 90% pushed out radially.

The invention has for its object a device to further improve the formation of stacks.

To achieve this object, the invention proposes a device with the features of claim 1. Training the invention are the subject of the dependent claims, the Wording as well as the wording of the summary Reference is made to the content of the description.

The feed device delivers the objects to be packed, which are, for example, diapers, continuously in their own longitudinal direction on. They will then be taken over by a handover facility which has a recording for each object. From these The objects are then taken with their broad sides pushed out ahead, to a wiping device. This opening device lines up the objects along one Line next to each other so that this creates a stack.

In a development of the invention it can be provided that the Reaming device a moving cross stop against which the first object to be stacked each Stack is created by the transfer device, if necessary is also pressed. The objects can be are diapers that are somewhat compressible. The transfer device counters this first item the cross stop. Once the second item is out of its own recording is pushed out, this lies down second item against the first item that already was moved a little sideways together with the stop. This allows the objects to form stacks be created, where they stand. You will be through the next object always prevented from falling over.

To then when a stack with a certain number of Items was completed, this stack too secure, can be provided according to the invention that the Has a second stop that with seen a constant distance behind in the direction of transport the first cross stop is arranged. He will therefore also moved along. Between the two cross stops is on this way a recording room is formed, which is in size corresponds to a stack of items. The device can be designed so that the distance between the two Cross stops can be changed to adjust the Device to different stack sizes or different Thickness of the objects to be stacked.

In a further development of the invention it can be provided that the Cross stop or the two assigned to a stack Cross stops can be moved along a closed path or are.

In a development of the invention, the device can Have longitudinal stop, which serves the front edges of the Align objects. This longitudinal stop can be stationary be arranged.

To make the device particularly economical and with less Letting cycle times work can be done according to the invention it should be provided in further training that the wiping device has more than one recording space, for example two recording rooms that moved along the same path become. It is particularly advantageous if both Recording rooms can be moved separately.

In a further development it can be provided that the a plurality of recording spaces in the direction of movement from each other. This makes it possible, for example one of the two recording rooms slower than that to be able to move others for as long as one Distance is present.

For example, the device can work so that during stacking, d. H. while loading individual Objects, the corresponding recording space continuously is moved while the recording space for removing the Stack is stopped. The stack can then be moved sideways be pushed out.

If there are two recording rooms, during the Filling the one recording space the other at a standstill be emptied.

In a development of the invention it can be provided that the Have recordings of the transfer device two flat paddles, between which the objects are arranged. she are from the feeder between the two paddles pushed in and thereby braked.

The transfer device is operated continuously, to a high working speed of the device guarantee.

In particular, it can be provided that the two paddles are arranged divergent.

In a development of the invention it can be provided that the Paddles are arranged on a chain. With the help of this chain the paddles can be transported in a certain way, which can deviate from a circle, what of the invention is preferred.

In particular, it can be provided that the chain by two Deflection wheels is led around.

The reaming device can in particular be a transport plate chain have, in which the transport plates, the bearing surface for the objects to be stacked.

Fig. 1

eine stark vereinfachte schematische Seitenan sicht eines ersten Teils der von der Erfindung vorgeschlagenen Vorrichtung;

Fig. 2

die Draufsicht auf die Anordnung der Figur 1;

Fig. 3

eine Draufsicht auf einen weiteren Teil der von der Erfindung vorgeschlagenen Vorrichtung;

Fig. 4

einen Schnitt längs Linie IV-IV in Figur 3;

Fig. 5

schematisch eine genauere Darstellung der Aufreiheinrichtung.

Fig. 6

die Ansicht eines Teils einer gegenüber der Anordnung der Figur 3 leicht geänderten Ausführungsform.

Further features, details and advantages of the invention will become apparent from the following description of a preferred embodiment of the invention and from the drawing. Here show:

Fig. 1

a highly simplified schematic Seitenan view of a first part of the device proposed by the invention;

Fig. 2

the top view of the arrangement of Figure 1;

Fig. 3

a plan view of a further part of the device proposed by the invention;

Fig. 4

a section along line IV-IV in Figure 3;

Fig. 5

schematically a more precise representation of the reaming device.

Fig. 6

the view of a part of an embodiment slightly modified from the arrangement of Figure 3.

The device proposed by the invention contains a Feeder 1, a transfer device 2 and a Rearing device 3, which is shown schematically in Figure 3 are. But before the entire device in its entirety is described, first to the individual parts, starting with Figure 1

Figure 1 shows the feed device 1 in a side view. The objects to be stacked are between two conveyor belts 4, 5 delivered, in a horizontal orientation. The objects are, for example, merged Disposable diapers, which are relatively flat. The two conveyor belts 4, 5 are synchronized in opposite directions driven. You will then be taken to two more conveyor belts 6, 7 which are arranged so that the diapers now be erected. Intertwined between them Conveyor belts 6, 7, the diapers are still oriented that they are on both sides over the side edges of the conveyor belts 6, 7 survive.

At the end of the entangled conveyor belts 6, 7 arrive objects to be stacked between two also in opposite directions synchronizing driven leveling belts 8. The leveling belts 8 are dimensioned so that the objects are no longer project laterally, i.e. above and below. From the leveling belts the objects are then transferred to the transfer device 2 from which they come to the wiping device, which is shown only schematically in Figure 1. The described Parts are attached to a table 9, the one above Machine frame 10 is fastened adjustable in height. For Height adjustment can be a screw 11 or another Serve drive. The drive of the various conveyor belts 4 to 8 is done by means not shown, which are driven by a servo motor. Thereby the synchronization is effected.

Figure 2 shows the arrangement of Figure 1 in a plan view. It can be seen that the dash-dotted line too stacking object 12 over the side edges of the conveyor belts 4, 5 survives. This also applies to the two entangled Conveyor belts 6, 7.

The two leveling belts 8 are each on a machine part 13 arranged, the mutual distance with the help a drive 14 can be changed. This allows the last part of the feeder to different Adjust the thickness of the items to be packed. At the The two parts 13 can also occur be moved apart.

In the leveling belt 8, the diapers can again be somewhat compressed.

Light barriers can be installed between the individual stations be arranged to make the device work properly to check.

At the end of the station with leveling belts 8 is the Transfer device 2 arranged, see Figure 3 now. The transfer device contains a schematically shown Chain 15 or a strap on which individual holding shoes 16 are attached. Each holding shoe 16 is used for attachment a recording 17. These recordings 17 are through the chain 15 moves. The chain 15 is wrapped around two transport wheels 18, one of which is powered. Every shot is intended to be a single item 12 to be stacked to record. It contains two diverging from the shoes 16 Paddle 19, 20. The device is synchronized so that the object 12 to be stacked is from the feeder is inserted between two paddles 19, 20. The Front edge 21 of the object 12 to be stacked hits first on the rear paddles 20 and is slowed down on the one hand and on the other hand in the Space between the two paddles 19, 20 introduced. she will slowed down to a standstill in this way. The leading edge 21 of the object 12 to be stacked then lies against one Longitudinal stop 22 on, which is transverse to the feed direction of the Feed device 1 runs. When moving on Recordings 17 become the objects 12 from the transfer device 2 pushed away from the side, with their broad sides ahead.

Both paddles 19, 20 are flat, so that the Objects 12 are not bent.

The reaming device contains a plurality of cross stops 23 which are arranged transversely to the direction of alignment. A first too stacking object, which is recorded in the recording 17 is from the rear paddle 20 in the direction of movement laterally against the cross stop 23. Once the Object 12 has reached the next receptacle 17, holds the front paddle 19 in the direction of movement of the next Recording the previously lined up item 12 until the then pressed the next object from the rear paddle 20 becomes.

The items become stacks between each in this way two cross stops 23 lined up. Such a paver The stack is on the right in FIG. 3 between two stops 23 shown. At this point, the stack 24 can help a slide 25 pushed out of the reaming device become. The slide 25, see Figure 4, is on one above the upper edge 26 of the cross stops 23 guided beams 27 appropriate. This bar 27 can with the help of a linear drive 28 moved in the direction of the double arrow in Figure 3 become.

Figure 4 shows a section through the device of the figure 3. A diaper 12 is shown schematically. The cross stops 23 are U-shaped, the open side the side with the transfer device 2 faces. This makes it possible for a paddle 19, 20 to pass through the Slot 29 of the cross stops 23 is moved through. By the arrangement of the paddles 19, 20 on a chain 15 around a Drive gear with a small radius can be led around space-saving and quick redirection of the diapers takes place. The use of flat paddles 19, 20 enables that the objects 12 are not bent or despite their deflection need to be curved, which is particularly the case with double folded diapers is particularly important.

Figure 5 shows in greater detail but schematically one Wiping device away from the transfer device Side, ie in Figure 3 from above or in Figure 4 from right. The widening device contains two receiving spaces for one stack of items at a time. Every recording room is limited by two cross stops 23. Between the two Transverse stops 23 a plurality of plates 30 is arranged, attached to a transport plate chain 31, 32 are. There are two such transport plate chains 31, 32 available, each a recording room for a stack form. Both transport plate chains run along the same closed path and are servomotors driven. Both transport plate chains 31, 32 are independent driven by each other. In the direction of movement Wiping device, i.e. along the path the transport plate chains Describe 31 and 32, respectively Recording spaces 30 a distance from each other. This means, that the two recording rooms 30 with, for example different speeds can be moved up the respective distance has shrunk to zero. With this one working method is the recording space, which is located in the unloading position is on the right in FIG. 3, stopped, during the recording space in the area of the transfer device 2 is continuously moved on. To extend the finished stack, it makes sense to stop the receiving space 30. Ejecting a finished stack can both to the front as shown in Figure 3 as well as to the rear respectively.

The arrow 34 in Figure 5, corresponding to that with the same Reference arrow 34 in Figure 3 shows in which direction the finished stack is pushed out to Packaging machine to come. The packaging machine can can be arranged immediately adjacent.

However, as can be seen from FIG. 3, there is also a Extending in the opposite direction is possible because the Alignment device works along a line. The return the cross stops 23 happens along the lower run of the revolving bands.

It is conceivable by the possible extension after two opposite directions the device for two packaging machines to let work.

Possibility of making the finished batch after two different ones To be able to extend directions has another Advantage. In the event that in the packaging machine a stall occurs, for example because of packaging material needs to be refilled, the device can stack also to the rear, d. H. push out opposite to arrow 34. There the stacks can, for example, be moved Tables can be saved. On the other hand, if one Stagnation occurs in the feeder, for example also when converting the manufacturing machines, the intermediate stack by hand or with the help of a device pushed back into a recording room and from there with the help of the pusher into the packaging machine be introduced.

The slide can in particular be equipped so that it is also possible to push it out to the rear, even if this is not the normal case.

Depending on the length of the reaming device can also be provided be that not only at one point to the packaging machine is pushed out, but possibly also by several Positions. Because the point at which the transport plate chain stops should be done, defined via a controller can be, the device can also be different Positions of the packaging machine can be adjusted.

In the embodiment shown in Figure 3, each Recording 17 arranged on a holding shoe 16. The holding shoe 16 contains two diverging paddles 19, 20. In the case of the figure 6 slightly modified embodiment shown each holding shoe 16 formed from two parts 16 a, 16 b, the the same configuration in the straight course of the chain 15 have like the holding shoe 16 according to the embodiment Figure 3. On each part 16 a, 16 b of the holding shoe 16 is each a paddle 20, 19 attached. The two parts 16a, 16b are attached to separate chain links. That’s why the deflection to a pincer movement, which leads to the fact that the objects to be treated 12 even more securely against the Longitudinal stop 22 are pulled. In Figure 6 is only that Transfer device 2 shown in the same place and in the same orientation as the rest of the Device should be arranged arranged.

Claims (20)

Device for forming stacks (24) from individual objects (12), with 1.1 a feed device (1), the
1.1.1 deliver the objects (12) one behind the other in their longitudinal direction, 1.2 a transfer device (2), the 1.2.1 has a plurality of receptacles (17) for one object (12) each, 1.2.2 the receptacles (17) are moved along a closed path and 1.2.3 pushes the objects (12) with their broad sides out of the receptacles (17) and with 1.3 a reaming device (3), the
1.3.1 lines up the objects (12) along a line. The apparatus of claim 1, wherein the reaming device (3) at least one moving cross stop (23) against which the respective first object (12) each stack (24) from the transfer device (2) is pressed. Apparatus according to claim 1 or 2, wherein the scraper (3) has a longitudinal stop (22), against which the front edges (21) of the objects (12) rest. Device according to one of the preceding claims, which the opening device (3) has at least one receiving space (30) for a stack (24) of two Cross stops (23) is limited. Device according to one of the preceding claims, which the receiving space (30) along a closed Path is movable. Apparatus according to claim 4 or 5, with two receiving spaces (30), which are movable along the same path. Apparatus according to claim 6, wherein both receiving spaces (30) can be moved separately from one another. Apparatus according to claim 6 or 7, wherein the receiving spaces (30) a distance from each other in the direction of movement exhibit. Device according to one of claims 6 to 8, wherein a receiving space (30) continuously during stack formation moved and stopped to remove the stack (24) becomes. Device according to one of the preceding claims, of the recordings (17) of the transfer device (2) two in particular have flat paddles (19, 20) between which the objects (12) are arranged. Device according to one of the preceding claims, which continuously moves the transfer device (2) becomes. Apparatus according to claim 10 or 11, wherein the paddles (19, 20) are arranged diverging. Device according to one of claims 10 to 12, wherein the paddles (19, 20) are attached to a chain (15). The apparatus of claim 13, wherein the chain (15) is around two deflection wheels (18) is guided around. Device according to one of the preceding claims, the transfer device has at least one transport plate chain (31, 32). Device according to one of the preceding claims, the removal of the stacks from the reaming device in a direction transverse to the direction in which the erection device is lined up he follows. Device according to one of the preceding claims, the removal of the stack (24) in two opposite Directions is possible. Device according to one of the preceding claims, the one for removing the stack (24) if necessary double acting slide is provided. Device according to one of claims 4 to 18, wherein an empty receiving space (30) at the extraction point too bypassing the feed device (1) and the transfer device (2) can be filled, in particular manually. Device according to one of claims 4 to 19, wherein Removing a stack (24) from a receiving space (30) also in one direction away from the packaging machine is possible.

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