Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With work feeding or handling means
Patent
1992-09-21
1994-07-05
Simmons, David A.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With work feeding or handling means
156567, 156571, 156447, 156DIG26, 74567, B65C 900
Patent
active
053264223
DESCRIPTION:
BRIEF SUMMARY
The invention relates to an labelling machine for treating vessels, in particular bottles.
It is customary that for applying labelling material to vessels, these vessels are pushed onto a rotary table, which is fastened to a rotatingly driven turntable of a labelling machine, the rotary table rotatably mounted on the turntable being controlled by means of a cam roller through a groove cam, which is customarily stationarily disposed below the turntable and contains a specific rotation programme determined by the profile of the groove cam. In particular in the case of shaped bottles or also in the case of costly labels as they are frequently used for alcoholic drinks, various rotation programmes, i.e. groove cams are required to carry out special movements upon the transfer of the labelling material and also upon wiping-on and/or pressure application. It is e.g. known to carry out a rotation of the rotary table opposite to the direction of rotation of the turntable at the moment of label transfer in the case of vessels having different diameters in the trunk and neck portions or a conical surface, while, in other cases, the vessel is again driven in a direction corresponding to the direction of rotation of the turntable during label transfer so as to be able to transfer labels being as long as possible to cylindrical surfaces. If standard labels are used, the vessel can also pass through the transfer station stationarily. The shape of the vessel and the label also determine the course of the wipe-on and pressure-applying path after the labelling station. Hitherto, a solution in this area was that the groove cam for each type of vessel or label to be processed receives a corresponding section, at which the brush-on bodies, sponge rollers, etc. are placed, while the remaining sections are passed without being used. This construction has the disadvantage that the necessary groove cam, and thus the rotary table, are of considerably greater dimensions due to the universal rotation programme than in the case of a machine only designed for a specific type of vessel or label.
Furthermore, a construction has already become known from DE-OS 33 23 919 in which two complete groove cams which may contain different rotation programmes are provided below the turntable for controlling a rotary table. This construction is disadvantageous inasmuch as each rotary table must be individually detached by hand from the turntable with its control means provided with a roller lever for the change-over from one rotation programme to the other one, lifted and introduced into the second groove cam. Rapid change-over of an machine from one type of vessel or label to another design deviating from it is hardly possible in this construction, above all since the groove cams are designed very accurately so as to avoid backlash so that the reintroduction of the cam rollers is above all problematical, it being possible that the groove cam can be damaged in the case of improper handling. Moreover, dirt may get into the groove cam upon the lifting of the rotary table from the turntable.
German Utility Model 87 08 031.1 shows a machine whose groove cam is equipped with controllable switches so that the cam rollers can optionally pass through various branches of the groove cam section-wise. The susceptibility to wear of the switches, and the high wear of the cam rollers caused by the joints in the groove cam at this point is considered to be detrimental in this solution In addition to this, considerable damage both to the groove cams and the rotary table control can occur if the switch control fails.
In addition, the configuration latitude of the rotation programme is naturally greatly restricted in the two known devices due to the side-by-side arrangement of the groove cams as compared with a machine with only one groove cam due to the space being only limitedly available. The pivoting angle maximally available to the roller lever cannot be utilized to the same degree in the case of two cams in side-by-side relationship as this is the case in a g
REFERENCES:
patent: 3946766 (1976-03-01), Amigues
patent: 4911285 (1990-03-01), Rogall et al.
Engel, Jr. James J.
Simmons David A.
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