Hoesch Werke Aktiengesellschaft

Hoesch Aktiengesellschaft

Gerd Buhne

Gunter Bartzick

Reinhard Naydowski

Jurgen Werk

Gerd Bartzick

The packaging band in packaging machines, especially when it is formed from plastic, was previously temporarily stored in meandering loops. According to the invention, the band is stored in coils in a spiral relationship to each other, whereby the center of the spiral is shifted and the coils have a free intermediary space between each other. The packaging band can be easily fed at a tangent to the start of the smallest coil without sharp bends and removed at the largest coil by means of shifting the center. The spiral can also be in a standing position. It is advantageous in this instance if the packaging band is fed in and removed in the vicinity of the lowest point. The innermost coil is not limited in its size by any fixed stop means, but rather the infeed of packaging band is cut in by a sensing switch when the radius of the inner coil has reached a certain minimum size. The switch also cuts out the infeed to the storage unit in time during operation, so that the outermost coil does not firmly contact an outer ring.

Device for the compensating storage of packing band in packaging machines

A device for tensioning a strapping band obtained from a supply reel and positioned around a package, and for fastening the overlapping ends of the band together with a sleeveless connection, as well as for cutting off the length of strap not untilized in wrapping the package and leading from the supply reel. A motorized drive mechanism for the upper half of a band-fastening tool and that for the tensioning wheel consists of a single motor that first, while it rotates in one sense, powers a tensioning wheel which tensions the strapping band, and then, subsequent to a shift in gear that depends on the tension in the band, reverses its rotation and powers the shaft of the upper half of the band-fastening tool. The gearshift consists of a pivoting lever that can be shifted against the force of a spring out of its initial position. The pivoting lever engages a spring-loaded gearshift lever through a set screw. The pivot lever is activated by the reaction force of the drive mechanism.

Device for tensioning a strapping band positioned around a package

Apparatus for tensioning a plastic strapping band positioned around a package and for connecting the overlapping ends of the band by hot bonding consisting of a fastening mechanism for hot bonding the overlapping ends of the band and including a backing plate, between the band and the package, against which three plungers aligned along the longitudinal axis of the band can be applied, the first plunger securing the free front end of the band, the second plunger securing the rear end of the band, and the third, middle, plunger forcing the overlapping ends of the band against a hot-bonding mechanism in the form of a heated cutter and compressing the molten ends together. The three plungers (27, 28, 29) aligned along the longitudinal axis of the band (20) are activated with a single cammed disk (31) on a shaft (67) perpendicular to the longitudinal axis of the band.

Apparatus for connecting overlapping ends of a strapping band tensioned

Support and tensioning apparatus for a strapping band to be tensioned around a package. A band first pressed between a pair of wheels and advanced in a band guide that surrounds but does not contact the package. The band is subsequently retracted with its front end secured in place into a position against the package by reversing the sense in which the pair of wheels rotates, and is then tensioned with a separate tensioning wheel that rotates slowly and at high power. The strapping band is tensioned with a pair of wheels of which one wheel is an idler wheel and the other wheel is a tensioning wheel powered in the tensioning direction by a motor and with its shaft mounted in a pivoting lever in such a way that the wheel presses against the strapping band, which is to some extent looped around it, while the band is being tensioned and rests on the idler wheel, with a force that increases with the tension in the band.

Support and tensioning apparatus for tensioning a strapping band about a

An arrangement for opening and cutting up packaging straps for scrap, in which a traveling frame moves transversely to a transport track. A cross beam with adjustable elevation has fastened to it a device for snipping and cutting up straps for scrap. A sensor determines the position of the package, of the packaging strap, of shears and shear blades. A control unit with preset control program switches the drives of the transport track, of the traveling frame, of the cross beam and of the device for snipping and cutting up for scrap, which is connected to the sensor. The shears have an extension forward of the lower shear blade with a blade-shaped pointed wedge, and drives for producing a nearly continuous force and for producing impacts attached to the shears. The wedge-shaped extension may form an acute angle with the package surface; this angle is adjustable relative to the package surface via a fulcrum. The force is introduced above the fulcrum parallel to the package surface into a guide carriage holding the shears.

Growing community of inventors

Schwelm, Germany

Gerd Buhne