DE1252575B - Packing machine, especially cigarette packing machine - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

German KL: 81 a -9/10

Number: 1252575

File number: Sch 37108 VII b / 81 a

Filing date: May 22, 1965

Opened on: October 19, 1967

VU

The invention relates to a packing machine, in particular a cigarette packing machine, for wrapping of the object to be packaged into one of a longer one and one that overlaps it shorter film section existing envelope, S which film sections by successive Separation of a single sheet of film can be obtained, with the separation of the film sections a rotating cylindrical knife roller equipped with two knives is provided, wherein A stationary suction block is arranged behind the knives, which causes the film sections to stick to one another are passed, the suction block holding the longer film section for a moment takes over and wherein for the further transport of the overlapped film sections one stationary and one are provided on this movable roller, according to patent 1235 217.

In the case of the packaging machine according to the main patent, the two film sections overlap zo in that the film web is accelerated before the shorter section is separated. Therefor an acceleration gear is required for the feed roller drive.

The present invention is based on the object without such a complex, easily prone to failure and subject to great wear and tear Accelerator gears get along. The invention is that a immediately behind the Knives located air belt is arranged vertically and driven at such a speed that the separated film sections, which are taken over in constant succession, with small gaps be transported downwards on the air belt that the suction block is attached to the air belt at its lower end is opposite and that the movement of the fixed roller connected downstream can be moved The roller is tuned so that after reaching the desired overlap distance, the further transport the film sections takes place in an overlapped state.

Since the air belt can be dimensioned as long as desired without impairing its function, one is not forced the knife roller, the counter knife and the feed rollers as close as possible to the packaging line to have to arrange. The air belt therefore also offers freedom of movement from the point of view of freedom of movement the arrangement of these parts has considerable advantages. You can also use one for the knife roller Select the appropriate position for all formats in question, so that otherwise necessary adjustment work is not required.

Packing machine, in particular
Cigarette packing machine

Addendum to the patent: 1235 217

Applicant:

Alfred Schmermund,

Gevelsberg (Westphalia), Körnerstr. 62

Named as inventor:

Alfred Schmermund, Gevelsberg (Westphalia)

An embodiment of the invention will be explained in more detail with reference to the drawings.

1 to 3 are schematic partial views of a packaging machine according to the invention and show the Foil sections in different layers.

The knives of a rotating knife roller are designated with 1 and 2 and the knife holders are designated with 3 and 4, which are provided with clamping eyes 5, 6 and fastened on the shaft 12. The knives are fastened to the knife holders 3, 4 with the screws 11. Pressure screws 8, 10 in the eyes 7, 9 press the knives against noses 3 ', 4' so that they are always pressed into exactly the right position. The counter knife, which can also be replaced by a smooth cutting counter roller, is denoted by 14 '. Preference rollers 15, which can be driven via spur gears, are arranged on the shafts 20, 21. 50, 50 are guide bars for the film. With 27 a suction block with suction holes 28, 29 with a stationary transport roller and 30 with a movable transport roller. The roller 30 is mounted in holders 31 to which a lever parallelogram 32, 33 is articulated, which has its stationary pivot point on the shafts 34, 35. 36, 37, 38 are transport rollers. 40 is a guide roller for the belt 41, which runs under a guide plate 42. 39, 39 'are the lower machine plates. The cigarette block is denoted by 46, one of the connecting pieces of the transport chain (not shown) is denoted by 47 and a perforated air belt is denoted by 54, which slides over a vacuum chamber 57, in the area of which the film sections are attached.

'709 678/259

sucks. The air belt device consists of the 3 stationary belt rollers 60, 61, 62, over which the air belt 54 is tensioned, and the vacuum chamber 57, which also faces the belt 54 on its Side openings 69 has.

The method of operation of the device is as follows: The film 49 is drawn forward by the feed rollers 15, 15 and advanced downward between the knife roll and the counter knife 14 '. After the longer section A has been cut off by the knife 1, the air belt 54 takes over the transport of this film section. The controlled vacuum of the suction block 27 is effective against the end piece of the longer section A , whereby the end piece is sucked in by the suction block. The cigarette block 46 is meanwhile from its position according to FIG. 1 via its position according to FIG. 2, in which it just hits the longer section A , into its position according to FIG. 3 arrives, in which the longer film section A begins to be placed around the block 46 in a U-shape. As a result of the suction block 27 becoming effective, the longer film section A is held or delayed for a brief moment, in which short period of time the shorter section B overtakes the end of section A. This creates the desired overlap (FIG. 3).

The fact that at this point in time the transport roller 30 arranged just above the packaging web 39 'swings against the roller 29 ensures that sections A and B can be conveyed further in an overlapped state and thus the desired wrapping of the object to be packaged is guaranteed.

The characteristic of the operation of the device according to the invention can be seen in that the cut sections on a transport path formed by the air belt - during that however, the air belt rotates at the same speed - temporarily at an increased transport speed be accelerated, what margin between the increased air belt speed and that caused by the work cycle of the machine, from the feed rollers, determined something lower feed speed? Foil web or the overlapped sections for the temporary Stopping or braking of the longer sections and thus for the overlapping process is exploited.

Claims (1)

Claim: Packing machine, in particular cigarette packing machine, for wrapping what is to be packaged Object in one of a longer and one this overlapping shorter film section existing envelope, which film sections by successively separating can be obtained from a single sheet of film, with the separation of the film sections a rotating cylindrical knife roller equipped with two knives is provided, a stationary suction block is arranged behind the knives, which causes the film sections be guided past each other, the suction block taking over the hold of the longer film section for a moment and one stationary and one attached to the overlapped film sections for further transport of the overlapped film sections movable roller are provided, according to patent 1235 217, characterized in that that an air belt (54) located directly behind the knives is arranged vertically and is driven at such a speed that the separated film sections, which are in constant Sequence are taken over, transported downwards on the air belt with small gaps that the suction block (27) faces the air belt (54) at its lower end and that the movement of the roller (30) which can be moved up to the fixed roller (29) connected downstream is coordinated is that after reaching the desired overlap distance the further transport of the Foil sections takes place in the overlapped state. Considered publications:
German Patent Nos. 668 461, 803 524;
German utility model No. 1 851555;
U.S. Patent No. 2,334,030. 1 sheet of drawings 678/259 10.67 © Buüdesdruckerei Berlin