GB2066219A

GB2066219A - A bag magazine to hold a stack of superimposed bags

Info

Publication number: GB2066219A
Application number: GB8041108A
Authority: GB
Original assignee: Haver and Boecker OHG
Current assignee: Haver and Boecker OHG
Priority date: 1979-12-29
Filing date: 1980-12-23
Publication date: 1981-07-08
Also published as: GB2066219B; DE2952727A1; FR2472522A1

Abstract

A bag magazine (1) has a base (14, 15, 16) to support a stack (2) of bags each having at least one thickened end portion (7, 8, 9, 10), and guide plates (11, 12) fixed to the base and so shaped that the stack of bags can comprise a plurality of superimposed batches (3, 4, 5, 6) of bags with each batch (3, 4, 5), except the lowermost batch (6), offset angularly with respect to the batch immediately therebelow, the magazine (1) including a drive and control means such that it can be rotated by the amount of the angular offset after the bags of each batch of bags have been removed. <IMAGE>

Description

SPECIFICATION A bag magazine to hold a stack of superimposed bags The invention relates to a bag magazine to hold a stack of superimposed bags.

Where the bags of the stack have at least one thickened end portion and the stack of bags in a magazine is very high, there is a marked central sag such that the ends of the bags are moved out of the horizontal position and point obliquely upwards.

If the magazine is filied with valve bags and the stack is high, the bags will again be in an inclined position, since the valves have an additional lining.

This may lead to disturbances in operation during the mechanical removal of the bags, which may impair the performance of the filling machine.

According to the invention there is provided a bag magazine to hold a stack of superimposed bags each having at least one of its end regions of greater thickness than an intermediate portion of the bag, the magazine including guide means to abut end edges of the bags, the guide means being so disposed that the stack can comprise a plurality of superimposed batches of bags with the bags in each batch of bags lying in the same way but with each batch, except the lowermost batch, offset angularly with respect to the batch of bags immediately therebelow; means mounting the magazine for rotation about a vertical axis and control means and a drive whereby, when the bags of an individual batch of bags have been removed from the magazine, the magazine is turned about said vertical axis through an angle corresponding to the angular offset which existed between the batch of bags removed and the batch of bags immediately therebelow.

In an advantageous embodiment of the magazine, the whole stack of bags is arranged on a lifting base, which can be moved upwards during removal of the bags in order to keep the removing level constant.

The invention is diagrammatically illustrated by way of example in the accompanying drawings, in which Figure 1 is a perspective view of a partly filled bag magazine according to the invention; and Figure 2 shows an exploded view corresponding to Figure 1.

Referring to the drawings, a bag magazine 1 has a stack 2 of bags, which comprises individual, superimposed valve bags and which is made up of component batches of bags 3, 4, 5, 6. Each component batch is offset in the magazine at an angular spacing from the component batch therebelow. In the example illustrated the spacing between two adjacent component batches is 90".

Since there is little central bowing in each component stack, this method of stacking in the entire pile gives a central sag which need only be very slight such that it will not interfere with mechanical removal of the individual bags from the magazine.

It will be seen from Figure 2 that the ends 7, 8, 9, 10 of two adjacent component batches 3, 4 form a surrounding frame; this frame can be relatively stiff and can substantially prevent the individual valve bags from sagging in the middle.

The magazine has guide plates 11, 12 associated with the ends of the bags adjacent the corners thereof and provided with an attachable shoe 13 at the bottom. The shoe is engaged on an arm 14 of a frame strut and then fixed in a suitable manner. The struts 15 form a rectangular frame with two arms 14 provided at each corner.

A lifting base 16, carrying the stack of bags 2, is arranged above the bottom frame.

The magazine is mounted for rotation about a central, vertical axis. It is equipped with a control means and a drive (not shown). When all the bags of a component batch have been taken out of the magazine, the lifting base with the stack of bags is turned through an angle corresponding to the angular spacing from the following component batch, i.e. through 90" in this example. The bags in the second component batch can then be taken away by the same removal means. As the bags are taken away, the lifting base is moved upwards to keep the removal level constant.

In the example illustrated the stack consists of valve bags with valves indicated at 17. It will be seen from Figure 2 that the valves within each component batch are located above one another. In pairs of adjacent component batches the position of the valves 17 is staggered. An inclined position caused by the thickness of the valves is therefore prevented in the entire stack.

1. A bag magazine to hold a stack of superimposed bags each having at least one of its end regions of greater thickness than an intermediate portion of the bag, the magazine including guide means to abut end edges of the bags, the guide means being so disposed that the stack can comprise a plurality of superimposed batches of bags with the bags in each batch of bags lying in the same way but with each batch, except the lowermost batch, offset angularly with respect to the batch of bags immediately therebelow; means mounting the magazine for rotation about a vertical axis and control means and a drive whereby, when the bags of an individual batch of bags have been removed from the magazine, the magazine is turned about said vertical axis through an angle corresponding to the angular offset which existed between the batch of bags removed and the batch of bags immediately therebelow.

2. A bag magazine according to claim 1, including a lifting base on which the whole stack of bags lies, which lifting base can be moved upwards during removal of the bags in order to keep the level at which the bags are removed constant.

3. A bag magazine according to claim 1 or claim 2, in which the angular offset between two adjacent batches of bags is 90 .

4. A bag magazine according to claim 2, in which the lifting base is provided above a frame formed by struts with arms at the ends of the struts extending beyond corners of the frame and in which vertical

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION A bag magazine to hold a stack of superimposed bags The invention relates to a bag magazine to hold a stack of superimposed bags. Where the bags of the stack have at least one thickened end portion and the stack of bags in a magazine is very high, there is a marked central sag such that the ends of the bags are moved out of the horizontal position and point obliquely upwards. If the magazine is filied with valve bags and the stack is high, the bags will again be in an inclined position, since the valves have an additional lining. This may lead to disturbances in operation during the mechanical removal of the bags, which may impair the performance of the filling machine. According to the invention there is provided a bag magazine to hold a stack of superimposed bags each having at least one of its end regions of greater thickness than an intermediate portion of the bag, the magazine including guide means to abut end edges of the bags, the guide means being so disposed that the stack can comprise a plurality of superimposed batches of bags with the bags in each batch of bags lying in the same way but with each batch, except the lowermost batch, offset angularly with respect to the batch of bags immediately therebelow; means mounting the magazine for rotation about a vertical axis and control means and a drive whereby, when the bags of an individual batch of bags have been removed from the magazine, the magazine is turned about said vertical axis through an angle corresponding to the angular offset which existed between the batch of bags removed and the batch of bags immediately therebelow. In an advantageous embodiment of the magazine, the whole stack of bags is arranged on a lifting base, which can be moved upwards during removal of the bags in order to keep the removing level constant. The invention is diagrammatically illustrated by way of example in the accompanying drawings, in which Figure 1 is a perspective view of a partly filled bag magazine according to the invention; and Figure 2 shows an exploded view corresponding to Figure 1. Referring to the drawings, a bag magazine 1 has a stack 2 of bags, which comprises individual, superimposed valve bags and which is made up of component batches of bags 3, 4, 5, 6. Each component batch is offset in the magazine at an angular spacing from the component batch therebelow. In the example illustrated the spacing between two adjacent component batches is 90". Since there is little central bowing in each component stack, this method of stacking in the entire pile gives a central sag which need only be very slight such that it will not interfere with mechanical removal of the individual bags from the magazine. It will be seen from Figure 2 that the ends 7, 8, 9, 10 of two adjacent component batches 3, 4 form a surrounding frame; this frame can be relatively stiff and can substantially prevent the individual valve bags from sagging in the middle. The magazine has guide plates 11, 12 associated with the ends of the bags adjacent the corners thereof and provided with an attachable shoe 13 at the bottom. The shoe is engaged on an arm 14 of a frame strut and then fixed in a suitable manner. The struts 15 form a rectangular frame with two arms 14 provided at each corner. A lifting base 16, carrying the stack of bags 2, is arranged above the bottom frame. The magazine is mounted for rotation about a central, vertical axis. It is equipped with a control means and a drive (not shown). When all the bags of a component batch have been taken out of the magazine, the lifting base with the stack of bags is turned through an angle corresponding to the angular spacing from the following component batch, i.e. through 90" in this example. The bags in the second component batch can then be taken away by the same removal means. As the bags are taken away, the lifting base is moved upwards to keep the removal level constant. In the example illustrated the stack consists of valve bags with valves indicated at 17. It will be seen from Figure 2 that the valves within each component batch are located above one another. In pairs of adjacent component batches the position of the valves 17 is staggered. An inclined position caused by the thickness of the valves is therefore prevented in the entire stack. CLAIMS

4. A bag magazine according to claim 2, in which the lifting base is provided above a frame formed by struts with arms at the ends of the struts extending beyond corners of the frame and in which vertical guide plates, forming the guide means, are fixed to the arms.

5. A bag magazine according to claim 4, in which the guide plates are fixed to the arms by attachable shoes.

6. A bag magazine according to claim 1, filled with valved bags with valves of the bags in each batch of bags superimposed.

7. A bag magazine to hold a stack of superimposed bags substantially as hereinbefore described and illustrated with reference to the accompanying drawings.