DE2160555B2 - Package stack forming machine - has feed table clear of sinking one, by amount of stack width - Google Patents

Abstract

The machine forms a stack out of rectangular packages on a sinking table, using a reciprocating collector plate depositing them on it in layers. A barrier holds the packages in position on the table as the plate is withdrawn, and as they arrive they are assembled on a stationary feed table and transferred to the plate by a thruster until a layer is complete. The distance (a) of the feed table (3) from the sinking table (1) is at least equal to the width of the stack to be formed, and the length of the collector plate (2) in its direction (b) of movement is double this amount. Halfway along the plate in its direction of movement there can be a raised step (2a), the rear part of which is reinforced.

Description

The invention relates to a device for forming a stack of cuboid individual pieces a lowerable stacking table using a horizontal reciprocating Sarnmelplatie, from which the individual props are transferred to the stacking table in batches, with a lock to the Holding back the location of the one. ; Oil pieces on the stacking table as the collecting plate goes back, whereby the individual pieces at right angles to the direction of movement of the collecting plate one behind the other on a stationary Arrive infeed table and be pushed onto the collecting plate by means of a pusher until one layer Unique pieces have been formed.

If such devices are used in connection with packaging machines, then dereif Increase performance significantly. By inserting a whole stack of individual pieces into the Packaging reduces the time required for filling.

The performance of such a bulk packaging machine is therefore dependent on the time required for the stacking process. Until completion of the stack, the subsequent operations cannot be initiated.

The invention therefore aims to increase the performance in the stacking process.

The formation of a stack in the manner described above is already known. When feeding the Single pieces in a row, this represents a cheap solution, because the single pieces without major structural Effort can be safely stacked (DD-PS 32 798, 44 437; DE-AS 11 60 358).

The disadvantage of this .Stapelsystem that during the Handing over a shift of individual pieces an interruption in the feed is required. This is through the changed position of the collecting plate in the end position bc'tingt. in which these no new pieces can accommodate. This results in a performance limitation when stacking up.

Stacking devices are also known in which the collecting plate is constructed in two parts in the form of superposed receiving planes. Each receiving level has a separate drive, the one upper receiving level is used to form a layer, while the lower transfers the layer to the stack -PS 2 25 759; DE-AS 11 09 5.35). This also applies to a device for loading pallets, in which the piece goods are collected to form a layer on a collecting station consisting of two arms which are attached to the insertion station so that they can pivot in the vertical direction. As soon as a layer is formed, it is brought over the pallet with the aid of a 'sliding carriage which has recesses into which the arms protrude when the sliding carriage is in the receiving position. To do this, the booms are first swiveled down until the layer touches the transfer carriage, which then moves over the pallet platform. A scraper is lowered behind the layer and brushes it on the pallet below as the shuttle travels back. In the meantime, the booms have resumed their horizontal position and are being reloaded (DE-AS 12 77 137). It is another apparatus for loading pallets are known with a collecting station following a Einteilstrecke from which the individual pieces are in layers handed in a transfer station. From this the layer is then pushed onto a sliding carriage arranged above the pallet with the aid of an insertion cylinder. The transfer carriage is then extended to the side and the layer is deposited on the stack (DE-AS 12 14 155). This device also has the disadvantage that it requires a great deal of technical effort.

The object of the invention is therefore to accommodate the subsequent individual pieces on the collecting plate also to secure a layer of individual gaps on the stack during the delivery process and while keeping the structural effort low. According to the invention this is achieved in that the distance of the feed table to the stacking table at least the width of the stack to be formed and the size of the collecting plate in the direction of movement is twice that. This makes it possible, even in the end position of the Busbar to begin forming another layer of individual pieces.

According to a further feature of the invention, the collecting plate points centrally transversely to the direction of movement a stepped elevation, the rear half being reinforced in cross section. These stepped elevation prevents the individual items lying on the collecting slide from being left behind the transfer to the stacking table. In the drawing, the invention is explained using an exemplary embodiment. It shows

F i g. I a top view of the stacking device,

F i g. 2 to 8 the stacking device in the different Work positions during the stacking process.

The device for stacking consists essentially of a lowerable stacking table 1, a horizontal one reciprocating .Sammelplatte 2 and a stationary feed table 3, on which the individual pieces / ' are fed. The SMpeiiisch 1 is located

inside a stacking magazine 4, the stacking magazine 4 is provided on the side of the stacking plate 2 with a flap 5 which serves to hold back the position of the individual pieces P on the stacking table 1 when the collecting plate 2 goes back. The upper part of the magazine 4 has a horizontal outwardly protruding edge 6 for receiving a cardboard box. In addition to the stationary feed table 3 there is also a horizontal stripping slide 7 for stripping the individual pieces P onto the collecting plate Z The distance a of the feeding table 3 to the stacking table 1 is at least the width of the stack to be formed, while the dimension b of the collecting plate 2 in the direction of movement twice that. The collecting plate 2 is provided in the middle, transversely to the direction of movement, with a step-shaped elevation ι ″> 2a, the rear half of the collecting plate 2 being reinforced

The mode of operation of this stacking device is as follows: The individual pieces P come in rows one behind the other in the direction of arrow X from an individual packaging machine (not shown) and arrive at the feed table 3, where they accumulate in the area of the collecting plate 2. The individual pieces P located on the feed table 3 lie across the collecting plate 2. In FIG. 2 is the collecting plate 2ί te 2 in its initial position. The stacking table 1 is extended upwards and the flap 5 on the stacking magazine 4 is open . Due to the angled shape of the stripping slide 7, the supply of further individual pieces P to the supply table 3 is interrupted at the same time. The stripping slide 7 then goes back again, as a result of which J> the supply of the subsequent individual gap P is again possible. Another row of individual pieces P is then brought back onto the collecting plate 2 in the same way as in FIG. 3 can be seen, a layer of three rows of individual pieces P is to be formed. This first layer of individual pieces P arrives on the stacking table 1 in such a way that the collecting plate 2 moves over the stacking table 1, as can be seen particularly from FIGS. 4 and 5. The stepped elevation 2a on the collecting plate 2 prevents the collecting plate 2 from accelerating an uncontrolled slipping of the layer during the transfer. As soon as the collecting plate 2 with a layer of individual pieces P is above the stacking table 1, the flap 5 closes as in FIG. 5, and the collecting plate 2 can return to its initial position. The flap 5 thus prevents the individual pieces P from being carried along by the collecting plate 2. In FIGS Form the rear part of the collecting plate 2 z * . In this way, a continuous operation of the stack formation is achieved, which is expressed in an increased stack performance. As soon as the collecting plate 2 has returned to its initial position, as shown in FIGS. 2 and 3, the workflow just described can start again from the beginning. After a layer of individual pieces P has been applied to the stacking table 1, the stacking table 1 is lowered by the amount of one layer. As soon as a stack has been completed, the stacking table 1 is extended upwards into an upper end position and pushed off to the side. The feed table 1 then returns to the position shown in Figure 2 and a new stack can be formed in the manner just described.

For this purpose 2 sheets of drawings

Claims (2)

Patent claims: 1, device for forming a stack of cuboid individual pieces on a lowerable stacking table using a horizontal reciprocating collecting plate, from which the individual pieces are delivered in layers onto the stacking table, with a lock to hold back the position of the individual pieces on the stacking table when going back Collecting plate, the individual pieces arriving at right angles to the direction of movement of the collecting plate one behind the other on a stationary feed table and being pushed onto the collecting plate by means of a slide until a layer of individual pieces has been formed, characterized in that the distance (a) of the feed table (3) to the stacking table ( 1) at least the width of the stack to be formed and the dimension (b) of the collecting plate (2) in the direction of movement is twice that. 2. Device for forming a stack according to claim i, characterized in that the collecting plate (2) has a stepped elevation (2a) centrally to the direction of movement, the rear half being reinforced