Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With work feeding or handling means
Patent
1989-10-06
1991-05-07
Wityshyn, Michael
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With work feeding or handling means
156579, 156DIG48, B65C 1100
Patent
active
050133900
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a hand-held labeling device having a housing and an operating lever which is arranged for swinging about a first axis and which in the rest position is swung away from a handle fixed to the housing, further a transport mechanism for a label tape which is operated during the swinging-out movement of the operating lever, the label tape being pulled off a supply roller and run to the transport mechanism over a guiding edge, a tape brake arranged between the supply roller and the guiding edge for fixing and releasing the label tape in the longitudinal direction, the tape brake being provided with a brake lever arranged to swing about a second axis, against the force of a first return spring which, in the rest position of the operating lever, acts to press the label tape against a guide plate, by the end of the one arm of the brake lever, while the other arm of its lever coacts with the operating lever in such a manner that operating this lever will cause the tape brake formed by the other arm to be lifted.
A hand-held labeling device of this type has been known already from DE-OS 26 38 441.
In the case of the known hand-held labeling devices the label gets detached from the carrier tape as the latter is pulled around a pointed guiding edge. During the detaching process, the label is transported to a position immediately below a pressure roller and can be pressed upon the object to be labeled even before it has fully come off the carrier tape. At the beginning of the pressing process, a large part of the label is still sticking to the carrier tape, due to the immediate vicinity of the guiding edge to the pressure roller, this part being the larger the longer the label is, viewed in the direction of the carrier tape.
Hand-held labeling devices of this type are frequently used for labeling a large number of objects arranged one beside the other, in rapid sequence. In supermarkets, for example, carton boxes containing a large quantity of individual cartons or cans are opened on top, and the individual cartons or cans are labeled one after the other, in rapid sequence. As a result of the speed of this operation, and the abrupt movements connected therewith, considerable stress is exerted upon the carrier tape, which stress is the greater the longer the section of the label still sticking to the carrier tape is. As a result, the exact timing of the movement of the carrier tape by the transport mechanism, which is indispensable if the individual labels are to be printed in good register, may be heavily impaired, in particular when the label tape is pulled off the supply roller in an uncontrolled manner, due to the stress exerted upon the carrier tape.
For the above reasons, tape brakes of the most different kinds have already been proposed, when become active at different points in time during the usual operating cycle of a hand-held labeling device. At the beginning of such a usual operating cycle, the operating lever, which is adapted to swing relative to the housing, is initially retracted from its swung-out position which it occupies in the rest condition. During such retracting motion, a printing mechanism accommodated in the hand-held labeling device is pivoted and caused to print one label at the time. The user then releases the fully retracted operating lever so that the latter is returned to its swung-out end position by the action of a return spring. During this outward movement, the transport mechanism is operated and caused to advance the label tape by one register step (label length), and during this transport movement the label gets detached from the carrier tape as it passes the guiding edge.
In the case of a known hand-held labeling device of the type described by the before-mentioned DE-OS 26 38 441 the swinging operating lever ends at its front by two narrow supporting arms carrying a printing head at their forward free ends. The supporting arms are interconnected, near their forward free ends, by a shaft extending in transverse direction. For the purpose of braking,
REFERENCES:
patent: 3231446 (1966-01-01), Satas
patent: 3934507 (1976-01-01), Geri
patent: 3960642 (1976-06-01), Hamisch, Jr. et al.
patent: 4369085 (1983-01-01), Hermann
patent: 4444611 (1984-04-01), Becker
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