Typewriting machines – Including type-set-assemblage mounted on carrier and...
Reexamination Certificate
2000-06-05
2001-03-13
Eickholt, Eugene (Department: 2854)
Typewriting machines
Including type-set-assemblage mounted on carrier and...
C101S018000, C101S029000, C101S477000, C029S565000
Reexamination Certificate
active
06200044
ABSTRACT:
The present invention relates to a device for the marking of parts moving in the direction of motion of a conveying device such as a roller table having at least one character carrier carrying one character, said character carrier being exchangeably inserted at the circumference of a stamping wheel.
Devices for the marking of parts (DD-PS 27177) are known where the stamping characters of a stamping character set are arranged in an exchangeable cartridge, said exchangeable cartridge being removably inserted into the stamping wheel so that exchanging of the stamping character set only requires insertion of a new cartridge containing the prepared stamping character set. Exchanging of individual stamping characters within one character set, however, is not possible in this case. Additionally, such devices are not able to meet the ever greater requirements in terms of production speed and automation.
Devices for the exchanging of individual character carriers are also known (AT 398 916). In this type of device, the stamping wheel forms a ring-shaped guide, coaxial with the rotational axis, for the character carriers. The stamping character storage can be rotated stepwise, in relation to the stamping wheel, around the rotational axis of said stamping wheel, and a selected character carrier can be pushed radially outward through a radial outlet opening in the stamping wheel. The disadvantage of this type of device, however, consists in the fact that the character carriers can only be transported to the outlet opening in the order in which they are arranged in the stamping character storage. Additionally, devices of this type suffer from the disadvantage that exchanging of a larger number of character carriers of a character carrier set also requires exchanging of the entire exchangeable cartridge containing the character set.
Therefore, the object of the present invention consists in providing a device for the marking of parts moving in the direction of motion of a conveying device that allows, on the one hand, fast automatic exchanging of substantially entire sets of character carriers where each of the character carriers, however, is exchanged separately and this exchange operation takes place quickly and substantially automatically with a view to production speed and, on the other hand, particularly fast marking of parts in cases where the difference between two consecutive stamping operations is limited to one different character in the character set used, this one character to be exchanged substantially being freely selectable.
This object is attained by a device of the type indicated above by providing at least one character carrier magazine for character carriers, ensuring that the character carrier magazine and the stamping wheel can be moved into positions relative to each other where character carriers of the stamping wheel can be directly transferred into receptacles of the character carrier magazine and character carriers of the character carrier magazine can be directly transferred into receptacles of the stamping wheel, and by providing a pivotally mounted magazine revolver being coaxial with the stamping wheel and containing character carrier pins radially movable therein, at least one outlet channel in the stamping wheel radially extending to the circumference of said stamping wheel and a linear drive non-pivotally mounted on the stamping wheel enabling radial shifting of a character carrier pin located in the angular position of the outlet channel from an internal inoperative position to an external impacting position.
The invention disclosed hereunder allows fast marking of parts, especially sections, with different characters, the invention standing out for particularly great flexibility as far as the type of marking is concerned.
In this respect, it is advantageous to connect with the linear drive a thrust piece that can, with a nose, engage in a groove of the character carrier pin. With the help of this thrust piece, the character carrier pin can be moved into its impacting position or drawn from its impacting position back into its internal inoperative position, respectively.
Additionally, it is advantageous to provide springs keeping the character carrier pins in their respective inoperative positions in the magazine revolver. Thus, radial dislocation of the character carrier pins during rotation of the magazine revolver caused by the centrifugal force and/or gravity occurring during rotation is prevented so that unhindered engaging of the thrust piece with its nose in a groove of the respective character carrier pin being transported into the outlet channel is ensured.
In a practically tested and reliable embodiment, the linear drive is a hydraulic drive.
It is also recommendable to position the outlet channel within the area of the character carriers inserted at the circumference of the stamping wheel in order to allow modification of the character set by exchanging a character carrier pin located in its impacting position in the outlet channel.
It is, furthermore, of advantage to provide clamping pieces to clamp the character carriers into the receptacles of the stamping wheel and to provide springs to clamp the clamping pieces into the recesses of the character carriers. Thus the character carriers in the receptacles of the stamping wheel are protected against dislocation during the stamping operation and positioning of the stamping wheel in the exchange position.
It is recommendable to provide releasing pins acting on the clamping pieces located in bores substantially parallel to the axis at the circumference of the stamping wheel to release the clamped character carriers, thus creating the preconditions for moving the character carriers into the character carrier magazine.
If is, furthermore, of advantage to provide drivable pins to push character carriers out of the stamping wheel into a receptacle of the character carrier magazine as well as drivable pins to move character carriers out of the character carrier magazine into the stamping wheel. Said pins allow substitution of character carriers from the character carrier magazine for character carriers from the stamping wheel and vice versa.
Additionally, it is recommendable to design the character carrier magazine, one character carrier magazine representing the absolutely required minimum, in such a way that it is wheel-shaped and can be rotated around its own axis and to position character carriers that can be radially shifted at the circumference of said character carrier magazine. Thus it is possible to position the character carrier to be exchanged of the character carrier magazine, by rotating the character carrier magazine, in the immediate vicinity of the receiving position for the character carrier in the stamping wheel in such a way that the character carrier can then be transferred into the receptacle of the stamping wheel.
Another advantageous feature, finally, consists in a distance measuring device for the moving parts being provided to ensure that the position of the stamping unit carrying the stamping wheel is adequately adjusted as said parts move along. With the help of said distance measuring device, the horizontal deviation from a theoretical position of the parts to be marked moving on a conveying device is determined, and the stamping wheel can be permanently kept above the parts to be marked with the help of a position adjusting mechanism.
REFERENCES:
patent: 4044665 (1977-08-01), Kuhne et al.
patent: 4218816 (1980-08-01), Dormehl
patent: 4327635 (1982-05-01), Kelly et al.
patent: 4414724 (1983-11-01), Garnett
patent: 4414733 (1983-11-01), Janotick
patent: 4542998 (1985-09-01), Osmera et al.
patent: 4712473 (1987-12-01), Amos
patent: 5024153 (1991-06-01), Bannister et al.
patent: 5103722 (1992-04-01), Brengman et al.
patent: 5479859 (1996-01-01), Linder et al.
patent: 5503514 (1996-04-01), Lamanna et al.
patent: 398 916 (1995-02-01), None
patent: 27177 (1964-11-01), None
patent: 2 279 283 (1995-01-01), None
Collard & Roe PC
Eickholt Eugene
LandOfFree
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