Sasib S.p.a.

Roberto Cavazza

A machine for wrapping cigarette packs (P), or the like, each into a wrapping material sheet (F), which including a stepwise-operatable spoke wheel (1) formed with a plurality of outwardly open radial pockets (4) which are for receiving packs (P) with the relative wrapping material sheet (F) from a feeding station (A), each pocket (4) being provided at the trailing end of its mouth--relative to the direction of rotation of the spoke wheel (1), with the radial teeth (214) for retaining in position the trailing flap (L1) of the wrapping material sheet flaps (L1, L2) which are folded on the respective pack by a folder device (5, 6). The folded flaps (L1, L2) are welded together by welding device (7, 8) which are imparted with a radially directed reciprocating motion between the one and the successive step of the spoke wheel (1), so that any interference is avoided with the retaining teeth (214). The welding device (7, 8) are operated by driving device which consist of main driving device (10, 11) and an auxiliary driving device (18) that is timely set in action only when the operation of the main driving device is discontinued, whereby the function and the integrity of the machine is guaranteed.

Machine for wrapping cigarette packs, or the like, into sheets of a

The invention relates to the reciprocating folders (6) used in packaging machines, packing machines and the like, particularly in cellophane wrapping machines, for folding on one side (103) of an article (3) to be packaged an edge (104) of a sheet (4) or slip of wrapping material, particularly of a material which is not much rigid and/or is easily charged with static electricity. According to the invention, for preventing the folder (6) from dragging along, during its return stroke, the folded edge (104) of the sheet (4) or slip, one or more blowing nozzles (9,109) are provided, and are oriented and arranged in such a manner that an air layer is generated between the folder (6) and the folded edge (104) of the sheet (4) or slip.

Reciprocating folder for packaging machines

The device for sensing the outer diameter of a roll of web upon unwinding of the web from the roll for the actuation of a control member when the diameter of the roll has been reduced to a predetermined minimum diameter, comprises a follower arm capable of swinging movement to-and-fro in the direction of the axis of the roll around a fixed axis and urged in the direction of the said roll axis. The swinging movement of the follower arm controls the actuation of a control member. The follower arm carries a feeler element intended to bear against the circumferential surface of the web roll, and the said feeler element is constructed as a gauging fork or snap gauge having a pair of arms which are spaced between each other of a predetermined distance, in such a manner that the clear distance or clearance between the said two arms corresponds to the predetermined minimum diameter of the roll.

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Rianoro, Italy

Roberto Cavazza