Printing – Special article machines
Reexamination Certificate
2000-09-07
2003-06-17
Colilla, Daniel J. (Department: 2854)
Printing
Special article machines
C101S399000, C101S488000, C123S14250R, C219S200000, C219S201000, C219S202000, C219S203000, C219S204000, C400S061000
Reexamination Certificate
active
06578474
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of Invention
The present invention relates to a printing or coating device for automobile parts, in which printing or coating is automatically effected on automobile parts by using a printing machine.
2. Description of Related Art
Product names, part names, company names, company logo marks, decoration patterns or designs, or handling explanation characters are printed on surfaces of vehicle metallic parts such as pistons, piston rings, lifter valves and rocker arms of vehicle engines (particularly, sliding parts thereof), and metallic parts such as rotors used in car's air conditioners and motor cores, and panels and cases as electric parts, and various products or parts such as sports goods (for example, baseball bats and skiing plates), fishing rods, stationery, and containers such as cans and bottles and tablewares, or coating for protection, lubrication, buffer, dressing or anti-corrosion is applied to such surfaces. Particularly, the printing or coating is effected on the movable surfaces such as rotating or sliding portions of products or parts in order to improve a sliding property such as smooth sliding, noise elimination or anti-wear.
Work surfaces to be printed or coated include various surfaces such as a flat surface, spherical surface and curved surface, and works are formed from various materials such as resin, ceramics, glass, rubber, wood, bamboo, leather or stone. Existing screen printing machines, pad printing machines or roller type printing machines have been used for effecting the printing or coating on such work surfaces. The printing machine may be of unitary or independent type or may be of continuous type having various functions.
When the printing or coating is effected by using such a printing machine, it is required that the work be pre-heated in a heating furnace prior to the printing or coating or the printed ink or coated paint-be dried in a heating furnace after the printing or coating. In this case, many works must be arranged on a tray or plate orderly and then be inserted into the heating furnace, which is troublesome. Further, when mounting and dismounting with respect to the heating furnace, the works may be contacted with each other by vibration, with the result that the paint on the works may be peeled or the printed characters or patterns may become obscure due to rubbing before drying or the paint or the printed ink on the work may be transferred onto another work to contaminate the work. Furthermore, since the heating device or heating furnace must be installed in the vicinity of the printing machine, great installation space is required.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a printing or coating method and a printing or coating device, in which pre-heating prior to printing or coating, and, heating and drying of ink or paint after the printing or coating can be performed in a continuous line automatically and efficiently, an efficient printing or coating operation can be effected for a short time, good printing or painting can be achieved, excessive or useless ink or paint is not consumed during the printing or coating operation, and the environment is not contaminated by volatile ink or paint, a printing or coating equipment can be made compact, and the above-mentioned conventional drawbacks can be eliminated.
According to a first aspect of the present invention, there is provided a printing or coating device for automobile parts in which an endless conveying device which conveys an automobile parts (a work), a preheating device which preheats a work surface conveyed by the endless conveying device by a high frequency heating, a printing or coating portion which prints or coats the preheated work surface conveyed by the conveying device and a heating device which heats and dried ink and paint by the high frequency heating after printing or coating are provided, said preheating device, said printing or coating portion and said heating device are disposed on a conveying line of said endless conveying device, said preheating device is disposed ahead of the printing or coating portion in a conveying direction and said heating device is disposed behind the printing or coating device in a conveying direction.
According to a second aspect of the present invention, there is provided a printing or coating device for automobile parts in which an endless conveying device which conveys an automobile component (a work), a preheating device which preheats a work surface conveyed by the endless conveying device by a high frequency heating, a printing or coating portion which prints or coats the preheated work surface conveyed by the conveying device, a heating device which heats and dries ink and paint by the high frequency heating after printing or coating and an orientation changing mechanism for changing orientation of a work with respect to a printing or coating portion are provided, said preheating device, said printing or coating portion and said heating device are disposed on a conveying line of said endless conveying device, said preheating device is disposed ahead of the printing or coating portion in a conveying direction and said heating device is disposed behind the printing or coating device in a conveying direction.
According to a third aspect of the present invention, there is provided a printing or coating device for automobile parts in which an endless conveying device which conveys an automobile component (a work), a preheating device which preheats a work surface conveyed by the endless conveying device by a high frequency heating, a corona discharge treating device in which the work surface conveyed by the conveying device is subjected to a corona discharge treatment before or after preheating, a printing or coating portion which prints or coats the work surface conveyed by the conveying device after subjected to the corona discharge treatment and a heating device which heats and dries ink and paint by the high frequency heating after printing or coating are provided, said preheating device, said corona discharge treating device, said printing or coating portion and said heating device are disposed on a conveying line of said endless conveying device, the preheating device is disposed ahead of the printing or coating portion in a conveying direction and the heating device is disposed behind the printing or coating portion in a conveying direction.
According to a fourth aspect of the present invention, there is provided a printing or coating device for automobile components in which an endless conveying device which conveys an automobile component (a work), a preheating device which preheats a work surface conveyed by the endless conveying device by a high frequency heating, a corona discharge treating device in which the work surface conveyed by the conveying device is subjected to a corona discharge treatment before or after preheating, a printing or coating portion which prints or coats the work surface conveyed by the conveying device after subjected to the corona discharge treatment, a heating device which heats and dries ink and paint by the high frequency heating after printing or coating and an orientation changing mechanism for changing orientation of a work with respect to a printing or coating portion, said preheating device, said corona discharge treating device, said printing or coating portion, said heating device and an orientation changing mechanism are disposed on a conveying line of said endless conveying device, the preheating device is disposed in front of the printing or coating portion in a conveying direction and the heating device is disposed behind the printing or coating portion in a conveying direction.
According to a fifth aspect of the present invention, there is provided a printing or coating device for automobile parts, according to any one of claims 1 to 4, in which two or more printing or coating portions are provided, and the printing or coating portion behind in a conveying direction can apply printing or coating to
Colilla Daniel J.
Crenshaw Marvin P
Oliff & Berridg,e PLC
Surfcoat Co., Ltd.
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