Printing – Selective or progressive – Bed and platen machines
Reexamination Certificate
2000-06-05
2001-10-02
Colilla, Daniel J. (Department: 2854)
Printing
Selective or progressive
Bed and platen machines
C101S004000, C101S005000, C101S018000
Reexamination Certificate
active
06295923
ABSTRACT:
The invention refers to a facility for marking of parts moving in the travelling direction of a roller table, provided with at least one character carrier carrying a character, with this at least one character carrier being inserted at the circumference of a stamping wheel.
It is the purpose of this invention to create a facility for successive marking of parts moving on a roller table, even at high travelling speed, in optional intervals with one or more characters. The characters in question may be different, or wholly, or partly identical.
This task is solved on the basis of a facility as mentioned above, on the one hand by means of an eccentric stamping wheel which, by means of a drive, is highly accelerable synchronous to the speed of the parts to be marked, and which is pivoted in a stamping unit, with the force of the stamping wheel exercised upon the parts to be marked being infinitely and constantly adjustable, and with a horizontal and vertical, or possibly inclined orientation of the stamping position of the stamping wheel being adjustable, and on the other hand by means of a distance meter for the moving parts, to control a horizontal drive for tracking the stamping unit carrying the stamping wheel.
The invention takes for granted that this facility is able to quickly and precisely mark parts, moving in the travelling direction of a roller table, successively with characters in short intervals. These characters may be single characters, as well as several different, or wholly, or partly identical characters. Due to the eccentricity of the stamping wheel, the stamping unit is lifted in its guiding system upon contact of the wheel with the parts to be marked, and marking of the parts is effected at a constant force exercised by the stamping unit. A continuous horizontal tracking of the stamping wheel in a position above the parts to be marked is possible by means of the distance meter.
Moreover, it will be favorable if the stamping unit is displaceable horizontally in a guide transverse to the travelling direction of the parts to be marked via the horizontal drive, and if it is equipped with a tilting drive for tilting the stamping unit into a stamping position of the stamping wheel vertical or slantwise above the parts to be marked. By means of these drives, the stamping wheel borne in the stamping unit may be placed with respect to its horizontal stamping position, as well as vertical or slantwise above the parts to be marked.
Moreover, it may be convenient if the facility is provided with at least one drive for adjustment of the stamping wheel against the moving parts, using one drive for coarse adjustment and one for fine adjustment of the stamping wheel against the parts to be marked. By means of the drive for coarse adjustment, the stamping wheel is moved into a preliminary position above the parts to be marked, the drive for fine adjustment moves the stamping wheel into its final position above the parts to be marked, immediately before the stamping procedure.
It is also recommended that the eccentricity of the stamping wheel be designed in a way that the stamping wheel touches the parts to be marked at a point immediately before the at least one character carrier inserted at the wheel circumference, and that the parts to be marked press the stamping wheel upward against a constant force. Thus counterbalancing this pressure at a constant, adjustable force, the marking procedure proper of the parts with at least one character carrier inserted at the circumference of the stamping wheel takes its course while the stamping wheel is turning.
It will also be favorable, if the constant force exercised by the stamping wheel to the parts to be marked is adjustable via a hydraulic drive. By means of this drive, the force can be adjusted as a function of the respective part to be marked and kept constant during the stamping procedure.
Finally, a facility is provided, where the parts moving in the travelling direction of the roller table are sections. In this case the invention has particularly proved its worth, for example, if several characters shall be stamped in intervals to railway rails.
REFERENCES:
patent: 3852988 (1974-12-01), Singhal
patent: 3964383 (1976-06-01), Delligatti
patent: 4036127 (1977-07-01), Speicher
patent: 4557191 (1985-12-01), Speicher
patent: 5393288 (1995-02-01), Miyasaka et al.
patent: 6200044 (2001-03-01), Berger
patent: 0 244 035 (1987-04-01), None
patent: 0 285 597 (1988-03-01), None
patent: 285597 (1988-10-01), None
patent: 9-309080 (1997-12-01), None
Colilla Daniel J.
Collard & Roe P.C.
Seeber Engineering GmbH
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