DE8519247U1 - Device for covering stacks of goods with a hood made of heat-shrinkable plastic - Google Patents

Description

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Hans Lingl Plant Engineering and Process Engineering GmbH & Go KG, Ueü-Ulffi

Device for covering stacks of goods

with a hood made of heat-shrinkable plastic

material.

The invention relates to a device for

covering destacking with a hood made of heat-shrinkable plastic according to the preamble of claim 1.

5 A device of this type is known from DE-OS 32 34 929/ where only a single hose reel is attached to the
foot of a fixed vertical frame.

However, it is often necessary to use different
to cover large stacks of goods with a hood made of heat-insulating plastic. The hoods must therefore be made from different tubes, each of which has a circumference corresponding to the stack, whereas the length of the hood can vary depending on the height of the stack of goods.

A device with different hoses is known from DE-GM 78 19 8 51. This concerns a device for packing stacks of building blocks, in which

go on a frame spanning a packing table, laterally rotating bearings for supply rolls for various hoses are mounted one above the other. The hoses consist of a large number of shrink film bags hanging on one another, which are deflected downwards by pairs of conveyor rollers slidably mounted on a cross member of the frame and pulled off by hand and
the stack. In order to get the required

In order to have the hose available, the frame with the hose rolls is moved so that the corresponding conveyor roller pair comes into the working position above the pick table.

The disadvantage of this device is that it does not work automatically and that too large masses have to be moved.

The invention is based on the object of creating a device in which packages of different sizes can be automatically covered with hoods of different diameters in alternating sequence and the mass to be moved is relatively small.

This object is achieved according to the invention by the features specified in the characterizing part of claim 1.

The advantage that can be achieved with the invention is that the welding and cutting device is stationary and only the hood has to be moved.

that the welding and cutting equipment is stored in a stationary

Embodiments of the invention are shown in the drawing and described in more detail below. 25

Show it:

Fig. 1 a side view of the device

Fig. 2 a side view of the roller holders

with welding and cutting device 30

Fig. 3 a variant of the device in side view

Fig. 4 is a plan view of the device according to Fig. 3 with roller holders that can be moved transversely to the bridge.

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A frame 1 can be moved on a ferry bridge 2, under which the packaging station 15 of the stack of goods 3 and several holders 4 for hose rolls 5 are arranged. The laterally folded film hoses 6 are pulled upwards from the rolls 5 through welding and cutting devices 7 mounted on the holders 4. For this purpose, a clamping conveyor device 11 is provided, which can be raised and lowered in a lifting frame 10 guided in the movable frame 1. A spreading and gripping device^ is mounted ^{in the lower part} of the lifting frame 10, which can be raised and lowered together with the lifting frame 10.

J-^n the holders 4 there are also mandrels 4 which engage in the side fold of the film tubes 6 and hold the welded end 8 of the film tube ready.

Each holder 4 can carry several hose rolls 5, with each film hose 6 being assigned its own cutting and welding device 7 and its own holding mandrels 9.

Depending on the size of the stack of goods 3, a film tube 6 is removed to produce a hood 13

the mobile frame 1 is moved to one of the removal positions A-An, whereupon the removal process and the production of the hood 13 takes place. The mobile frame 1 with the produced hood is then moved back over the stack of goods 3, whereupon the hood 13 is lowered over the stack of goods without contact by means of the spreading and gripping device. All movements take place automatically.

Instead of the arrangement of the hose reel holders shown in Fig. 1, these can also be arranged transversely to the

The frame must be arranged in the direction of travel outside the area where the stack of goods is to be covered (Fig. 3, 4), whereby they are then moved on rails as required into the removal position under the travel bridge.

Claims (1)

&bull; till ■ · · i aa ill · · · ■ I ·· I· 1 I···· -1- fosprüche 1. Device for covering a stack of goods with a hood separated from a film tube made of heat-shrinkable plastic, with a lifting device guided in a vertical frame, in which a clamping conveyor device is mounted so that it can be raised and lowered for pulling the laterally folded tube upwards from a tube roll, furthermore with a spreading gripping device attached in the lower part of the lifting device for contact-free covering * the cut stack with the hood separated from the film tube, where the side fold edges are grasped at the four vertical edges and spread to form an open hood, and with a welding and separating device for holding the tube end, welding the upper tube end and for separating the hood from the film tube, characterized in that the vertical frame (1) with the spreading and gripping device (12) for moving to various pulling positions (A-An) between the destack to be covered and the holders (4) for tube rolls (5) located at the pulling positions on a can be moved on the travel bridge (2) arranged above it. 3. Device according to claim 1, characterized in that the holders (4) are arranged in the direction of travel of the frame (1) parallel to the covering point of the stack of goods (3). 20 25 35 -2- 3. Device according to claim 1, characterized in that the holders are arranged transversely to the direction of travel of the frame (1) outside the covering point of the stack of goods (3) and can be moved into the removal position are. 4. Device according to claim 2 or 3, characterized in that the holders (4) carry at least two hose reels (5) and each hose reel is assigned its own clamping, welding and cutting device (7). 5. Device according to claim 4, characterized in that each clamping and separating device (7) is assigned mandrels (9) engaging in the side fold of the welded end of the film tube.