US 10,926,530 B2Granted

Screen printing method and device therefor

AssigneeMurakami Corporation

InventorsAkihiko Fukazawa, Yoshihito Homma

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Abstract

A printing object surface has a cross-sectional shape curving along a printing advancing direction. The printing advancing direction is defined as a Y-axis, a direction orthogonal to the Y-axis and belonging to the cross-section is defined as a Z-axis, and a direction around an axis orthogonal to a Y-Z plane is defined as a θ-axis. A squeegee is disposed so as to be movable in the respective Y-, Z- and θ-axis directions. Information indicating a mutual relationship among respective Y-, Z- and θ-axis positions is obtained. The relationship is a relationship that enables performing printing while maintaining or substantially maintaining an angle formed by a direction tangent to a printing position in the printing object surface in the Y-Z plane and the squeegee. Printing is executed while the respective Y-, Z-, θ-axis positions of the squeegee relative to the printing object surface are controlled according to the obtained information.

Claims13

Dependent claims

A screen printing method for screen printing on a printing object surface having a cross-sectional shape curving along a printing advancing direction, the method comprising:

where the printing advancing direction is defined as a Y-axis, a direction orthogonal to the Y-axis and belonging to the cross-section is defined as a Z-axis and a direction around an axis orthogonal to a Y-Z plane is defined as a θ-axis, and
where a position in the θ-axis direction corresponds to an angle around the axis orthogonal to the Y-Z plane with reference to a reference position around the axis orthogonal to the Y-Z plane,
providing a controller and a memory;
disposing a squeegee so as to be movable in respective Y-, Z- and θ-axis directions relative to the printing object surface;
storing information in the memory, the information being obtained based on data on the cross-sectional shape of the printing object surface or data on a shape approximating the cross-sectional shape, and the information indicating a mutual relationship among respective Y-, Z- and θ-axis positions, the mutual relationship enabling performing printing while maintaining or substantially maintaining a printing angle formed by a direction tangent to a printing position in the printing object surface in the Y-Z plane and the squeegee, and the controller adjusting the position of the squeegee in the θ-axis direction based upon the mutual relationship such that the printing angle formed by the direction tangent to the printing position in the printing object surface in the Y-Z plane and the squeegee is maintained or substantially maintained;
and
executing printing while controlling with the controller the respective Y-, Z- and θ-axis positions of the squeegee relative to the printing object surface according to the stored information indicating the mutual relationship among the respective Y-, Z- and θ-axis positions.

4 more elements

A screen printing device for screen printing on a printing object surface having a cross-sectional shape curving along a printing advancing direction,

where the printing advancing direction is defined as a Y-axis, a direction orthogonal to the Y-axis and belonging to the cross-section is defined as a Z-axis and a direction around an axis orthogonal to a Y-Z plane is defined as a θ-axis, and
where a position in the θ-axis direction corresponds to an angle around the axis orthogonal to the Y-Z plane with reference to a reference position around the axis orthogonal to the Y-Z plane, the apparatus comprising:
a controller;
a memory;
a squeegee;
a doctor;
and
a mover that moves the squeegee relative to the printing object surface in respective Y-, Z- and θ-axis directions;
the memory storing information obtained based on data on the cross-sectional shape of the printing object surface or data on a shape approximating the cross-sectional shape, and the information indicating a mutual relationship among respective Y-, Z- and θ-axis positions, the mutual relationship enabling performing printing while maintaining or substantially maintaining a printing angle formed by a direction tangent to a printing position in the printing object surface in the Y-Z plane and the squeegee, and at a time of printing via the squeegee, the controller controls the mover according to the information stored in the memory so as to control the respective Y-, Z- and θ-axis positions of the squeegee relative to the printing object surface to be respective positions according to the information, and wherein
the controller is configured to adjust the position of the squeegee in the θ-axis direction via the mover and based upon the information stored in memory indicating the mutual relationship such that the printing angle formed by the direction tangent to the printing position in the printing object surface in the Y-Z plane and the squeegee is maintained or substantially maintained.

7 more elements

Dependencies are inferred from the claim text.