JPS5950461B2 - Micro group forming device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a micro group forming apparatus for forming micro groups in a fixed direction on a flat workpiece such as a glass plate or a decorative board.

As shown in Fig. 1, in some glass plates, decorative boards, etc., it is necessary to form micro groups in a certain direction on the workpiece 1 in a direction other than perpendicular or parallel to the sides of the rectangular workpiece 1, as shown by the arrows. There is something. In the case of a liquid crystal display element substrate, when microgroups are formed at an angle of 40 degrees to 50 degrees with respect to one side of the workpiece 1, an element substrate with good alignment characteristics can be obtained. The conventional method for forming such microgroups is to hold one side of a rectangular workpiece 1 at a necessary angle to the direction of movement (arrow) of the table 2, as shown in FIG. Cylindrical rotating body 3 covered with etc.
The table 2 is moved so that the axis of rotation of the table 2 and the direction of movement of the table 2 are perpendicular to each other to form micro groups in a fixed direction. In such a forming method, the table 2 that holds the workpiece 1 becomes large, and the length of the cylindrical rotating body 3 becomes large, so that the micro group forming apparatus has the disadvantage of becoming large. In addition, if you want to form uniform micro groups on the entire surface of the workpiece 1, the table 2,
There is a drawback that each cylindrical rotating body 3 must be manufactured and assembled with high precision. SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-described drawbacks of the prior art and to provide a micro group forming apparatus capable of forming highly accurate micro groups in a fixed direction on the surface of a glass substrate decorative board or the like.

That is, the feature of the present invention is that the movement direction of the table and the rotation axis of the cylindrical rotating body are set at an angle other than 90 degrees, and a micro group in a fixed direction is formed by combining the velocity vector of the cylindrical rotating body and the velocity vector of the table. Therefore, the device can be made smaller.

A specific embodiment of the present invention will be described using FIG. 3. The axis of the cylindrical rotating body 3 is set to be inclined by θ with respect to the moving direction of the table 2 holding the workpiece 1 with an air chuck or the like. Further, the height direction of the workpiece 1 and the cylindrical rotating body 3 are adjusted in advance so that the workpiece 1 and the cylindrical rotating body 3 are uniformly incised over the entire length of the workpiece 1 and come into contact with each other. In this state, the cylindrical rotating body 3 is rotated to feed the table 2. FIG. 4 is a cross-sectional view of the microphones during group formation. At this time, at one point P of the contact portion between the workpiece 1 and the cylindrical rotor 3, the circumferential speed υ1 of the cylindrical rotor 3 and the feed rate υ2 of the table 2 are set appropriately for the workpiece 1, as shown in FIG. , it is possible to form a micro group in the synthesized H direction (set value). That is, the axis of the cylindrical rotating body 3 and the table 2
When the angle θ with the moving direction of
Since both the length of the table and the width of the table can be reduced to 1/2 compared to the conventional method, there is an effect that the apparatus can be made smaller and more compact.

Furthermore, a cylindrical rotating body 3 is used for the alignment film surface of the liquid crystal display element.
rotation speed of 500r. p. m, feed rate of table 2 20
At a speed of 0.00 mm/min or less, there is an effect that alignment characteristics equivalent to or better than those of the conventional method can be obtained. As explained above, according to the present invention, it is possible to obtain alignment characteristics equivalent to or better than conventional ones, and also to make the device smaller and more compact.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a workpiece, FIG. 2 is a plan view showing a schematic configuration of a conventional micro group forming device, and FIG. 3 is a plan view showing an embodiment of the micro group forming device of the present invention. FIG. 4 is a sectional view of FIG. 3, and FIG. 5 is an explanatory diagram showing the direction in which micro groups are formed. Explanation of symbols, 1... Workpiece, 2...
Table, 3... Cylindrical rotating body.

Claims (1)

[Claims] 1. A cylindrical rotating body having a surface coated with fibers or abrasive grains, etc. and a sliding body that holds a flat workpiece and can move relative to the cylindrical rotating body are brought into contact, and the cylindrical body at the contact point A cylindrical rotating body and a sliding body are arranged so that the velocity vector of the rotating body and the velocity vector of the sliding body are different, and a micro group is formed in a fixed direction on a flat workpiece. Group forming device.