DE6938427U - DEVICE FOR PACKAGING PIECE GOODS IN SEALABLE PLASTIC FILM - Google Patents

Description

Device for packing lumpy goods in weldable plastic film

The innovation relates to a device for packing lumpy goods in weldable plastic film, consisting of a device for receiving the plastic film, unites. ¹ work table and an adjoining manual, dygehead fold-down device and a device that welds the plastic film and returns to the starting position through a restoring force generated by a weight.

Devices of the type described above are known. They are required for the manual packaging of one or more, solid or semi-solid goods such as geatiee, fruit _f meat, textiles, industrial products, etc., the diversity and small number of which makes the use of packaging machines possible.

In these devices, the plastic film wrapped around the material is welded on the open two sides after the welding device has been manually folded down and at separated from the rest of the film in some designs. After completion of the welding, the welding device is in the known devices by a counterweight folded up again around the pivot point in the starting position. This upward movement of the welding device caused by the counterweight is limited by stops and therefore leads to premature wear of both

- 3 -

or individual components. Also elastic pontics are smashed and have to be replaced more often. In addition, this counterweight protrudes in the working position the welding device far beyond the device and thus often gets stuck with the discarded packaging tone 3ut, so there (3 sin uninterrupted Working is not possible.

The innovation has set itself the task of a compact,

omitting all parts that wear out quickly, to create a mechanically flawless device that avoids the aforementioned shortcomings. This is done according to the fact that as a restitution;

force for the welding device at its pivot point a jf or a subdivided torsion spring is arranged with one end on the fixed bearing part and with f its other end on the fold-down frame of the; | Schwelßeinrichturg is clamped in such a way that in Output division of the welding device, the torsion spring is tension-free.

By using a torsion spring with a tension-free position, which is the starting position of the welding device , attacks susceptible to destruction and the counterweight, which is subject to stress, are dispensed with.

The upward movement of the welding device is after Exceeding the tension-free position of the torsion spring braked by the building up counter-tension, sprung back into the starting position and held there. As part of the innovation, it is possible, depending on the requirements and constructive events only one, or a divided one, i.e. one that works in the same direction Provide torsion springs.

In order to compensate for manufacturing tolerances of the spring, it is proposed according to the innovation that means for adjusting the tension-free position of the torsion spring on the fixed bearing part or on the frame that can be folded down the welding device are arranged.

An exemplary embodiment, which does not restrict the innovation, is shown schematically in the drawing although shows

1 shows a packaging device, FIG. 2 shows a side view of the one shown in FIG Device and FIG. 3 shows a detail with the torsion spring.

In the figures, a table-like frame receiving the assemblies of the device is denoted by 1. On this Oestell 1 ^one after the other a supply arrangement

for the packaging material 3, a work table 4 and a welding device 5 are arranged. The welding device 5 consists of a frame 6 with a handle 7 and two electrically heated welding bars 8. The frame 6 of the welding device 5 can be rotated on the side opposite the handle 7 via an axis 9 in two bearing blocks 10 firmly connected to the table-like frame 1 stored. A torsion spring is arranged between a bearing block 10 and the frame 6 through which the axis 9 extends, one end ΛI of the spring 11 being clamped in the bearing block 10 and the other side 13 of the spring 11 in the frame 6. In this exemplary embodiment, further bores 14 are arranged in the same radius around the axis 9 in order to adjust the torsion spring in the frame 6. Clamping rings 15 limit the lateral position of the axis 9 in the bearing blocks 1o. A deflection roller 16 on the storage device 2, in the area of the work table U , keeps apart the plastic film, which is fed from the roller 3 of the packaging material, and which is laid one on top of the other.

Further details are not part of the innovation omitted for the sake of clarity.

The goods are packed by placing them in the folded and held together by the pulley 16 plastic film on the work table 4 ·. After inserting the goods are transported onwards together with the

Foil manually or automatically using a conveyor under the welding device 5. In this position, the welding device 5 is manually folded down about the axis 9 and the electrically heated white strips θ are printed on the foil. The front opening and the connection to the work table side are closed. The third side was closed by the previous welding process and the fourth side is closed by the folded film. At the same time, the connection to the following «! Foil "-separated. In the present embodiment, the welding device 5 is held in the working position by a time-controlled lock, not shown. After the time has elapsed, the welding device 5 is released and is brought into the rest position by the torsion spring 11, which is tensioned when it is folded down in the rest position exceed decelerated by counter-clamping of the spring 11. While the timing of the lock can the Arbeitsetiach _f werien inserted to be packed the next so DAFL a speedy Arbeitsrythrnus is given.

Claims (2)

Protection requirements 1. Device for packing lumpy goods in verschwel Edible plastic film, consisting of a device for receiving the plastic film, a work table and a subsequent manually operated by folding down and by one of a weight generated restoring force returning to the starting position, the plastic film welding device, characterized in that as a restoring force for the welding device (5) at its pivot point (9) one or a subdivided torsion spring (11) is arranged, which with one end (12) on the fixed bearing part (10) and with its other end (13) on fold-down frame (6) of the welding device (5) is clamped in such a way that in the starting position of the Welding device (5) the torsion spring (11) is tension-free. 2. Device for packing lumpy goods in weldable Plastic film according to claim 1, characterized in that means (14) for adjusting the tension-free position of the torsion spring (11) on the fixed bearing part (10) or on the foldable part R-ihmen (6) of the 3ch \ 7oi3einrichtung (5) are arranged.