JPH0529879Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is applicable to printing machines with a positioning mechanism, especially for positioning machines that require precise positioning between the printing pattern transferred from the printing screen and the printed material. Regarding mechanical printing presses.

[Conventional technology]

A conventional printing machine with an alignment mechanism has a means for fixing and holding each of the printing screen and the printing substrate, a means for spreading the paste on the printing screen to transfer the printing pattern to the printing substrate, and a means for transferring the printing pattern and the printing substrate. and means for performing relative movement between the printing screen and the printing substrate to enable alignment between the printing screen and the printing substrate.

Next, a conventional printing press with an alignment mechanism will be described in detail with reference to the drawings.

FIG. 5 is a perspective view showing an example of a conventional printing press with an alignment mechanism.

The printing machine with an alignment mechanism shown in FIG. 5 includes a printing screen holding frame 1, an XYθ table 2 and a work table 3 installed thereon, a squeegee 4, and a screen holding frame moving mechanism 5. ing. Here, the printing screen holding frame 1 fixes and holds the printing screen 6 and is movable above the work table 3 by the screen holding frame moving mechanism 5 as shown in FIG. 6, and the work table 3 fixes the substrate 7. The position can be adjusted using the XYθ table 2. Further, the squeegee 4 moves left and right to spread the paste 8 on the printing screen 6 and transfer the printing pattern onto the printing material 7.

The positioning operation of a conventional printing press with a positioning mechanism will be described below. First, in the state shown in Figure 1, place the printing screen 6 into the printing screen holding frame 1.
First, the printing material 7 is fixed and held on the work table 3, and after applying the paste 8 on the printing screen 6, the printing screen holding frame 1 is moved to the state shown in FIG. Next, by moving squeegee 4,
The printing pattern is transferred onto the printing substrate 7.

The test print produced in this way, as shown in Fig.
It has a transfer printing pattern 18 that is misaligned in the XYθ directions. The operator observes this, adjusts the XYθ table 2 appropriately, and performs the test printing again. As a result, if the required alignment accuracy is obtained, the alignment is completed, and if not, the XYθ table 2
Repeat the adjustment operation to align the position.

[Problem that the invention attempts to solve]

The above-mentioned conventional printing machine with a positioning mechanism uses trial and error in which the operator recognizes the positional misalignment between the printing pattern and the substrate by looking at the test print, and repeatedly adjusts the XYθ table. Since alignment is performed, it is difficult to align in a short time, and the alignment accuracy is low.

[Means for solving problems]

The printing press with an alignment mechanism of the present invention includes means for fixing and holding each of a printing screen and a printing substrate each having two alignment marks arranged at the same position relative to a printing pattern. , a means for screen-printing a printing pattern on a substrate by stretching paste on a printing screen, a means for measuring the positional coordinates of a total of four alignment marks at the printing execution position in the same XY coordinate system, and the measurement. Based on the results, print patterns and print screens necessary for alignment between printed materials are created.
The device is configured to include means for calculating the amount of relative movement between the printing substrates, and means for executing relative movement between the printing screen and the printing substrates for positioning the printing pattern substrates based on the calculation result. .

〔Example〕

Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the present invention.

The printing machine with a positioning mechanism shown in FIG.
, scales 10 and 11, a microscope 12, and a microcomputer 13.

Here, the printing screen holding frame 1 fixes and holds the printing screen 6 and can be moved above the work table 3 by the screen holding frame moving mechanism 5 as shown in FIG. 2, and the work table 3 fixes the printing material 7. The position can be adjusted using the XYθ table 2, and the squeegee 4 moves left and right to remove the paste 8 on the printing screen 6.
The printing pattern is screen printed on the printing material 7 by stretching the paper.

The microscope 12 is fixed to the tip of the XY stage 9, and by manually moving the XY stage 9, it is possible to position the alignment mark at a fixed point within the field of view of the microscope. The amount of movement of the XY stage 9 can be measured by scales 10 and 11 in the XY directions, respectively. Further, the microcomputer 13 adjusts the position of the printing material 7 to the screen 6 based on the alignment mark position data.
The relative correction movement amount in the XYθ directions is calculated, and the XYθ table 2 is driven according to the calculated value.

The operation of the printing press with an alignment mechanism according to the present invention will be explained step by step below. First, in the state shown in FIG. 1, the printing screen 6 with alignment marks 14 and 15 is fixed and held on the printing screen holding frame 1, and the printing medium 7 with alignment marks 16 and 17 is fixed and held on the work table 3. After applying the paste 8 on the printing screen 6, the printing screen holding frame 1 is moved to the state shown in FIG. 4. Here, as shown in FIG. 2, by manually moving the XY stage 9 while looking through the microscope 12, the alignment mark 14 on the screen 6 is positioned at a fixed point within the field of view of the microscope, and the scales 10 and 11 at that time are The value is stored in the microcomputer 13. A similar operation is performed for the alignment mark 15 as well.

Next, move the print screen holding frame 1 to the state shown in FIG. 3, and then move the XY stage 9 manually while looking through the microscope 12 to bring the positioning mark 16 on the printing material to a fixed point within the field of view of the microscope. The positioning is performed, and the values of the scales 10 and 11 at that time are stored in the microcomputer 13. A similar operation is performed for the alignment mark 17 as well.

Based on the position coordinate data of the four alignment marks obtained in this way, the alignment mark 14 is
The microcomputer 13 calculates the amount of relative movement between the screen 6 and the printing material 7 to superimpose 15 on 16 and 15 on 17, and creates an XYθ table 2.
By executing the relative movement, the positioning between the printing material 7 and the printing pattern is performed. next,
Move the screen holding frame 1 to the state shown in Figure 4,
Move squeegee 4 to paste on screen 8
Printed by stretching the .

[Effect of idea]

The printing press with an alignment mechanism of the present invention measures the position coordinates of two alignment marks set on the screen and the printing substrate, instead of performing alignment by trial and error of trial printing and position adjustment. By calculating the correction amount for positioning based on the data and executing positioning using the calculated value, there is an effect that highly accurate positioning can be performed in a short time.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a perspective view showing the state in which the screen holding frame shown in Fig. 1 has been moved to the printing position above the work table and the microscope at the tip of the XY stage has been moved to the position coordinate measurement position above the alignment mark on the screen.
The figure is a perspective view showing the state in which the microscope at the tip of the XY stage shown in Figure 4 has been moved to the position coordinate measurement position above the alignment mark on the printing material.
A perspective view showing a state in which the screen holding frame shown in the figure has been moved to the printing position above the work table, FIG. 5 is a perspective view showing an example of the conventional method, and FIG. FIG. 7 is a perspective view showing the state in which the printer has moved to the upper printing position, and FIG. 7 is a plan view showing the state in which test printing is performed on the printing material. 1... Screen holding frame, 2... XYθ table, 3... Work table, 4... Squeegee, 5
... Screen holding frame moving mechanism, 6 ... Screen, 7 ... Printing material, 8 ... Paste, 9 ...
XY stage, 10...Scale, 11...Scale, 12...Microscope, 13...Microcomputer, 13, 15...Screen alignment mark, 16, 17...Printed material alignment mark, 18... Transfer printing pattern for trial printing, 1
9...Print pattern transfer position on printing material.

Claims (1)

[Scope of utility model registration request] A printing screen and a substrate each having two positioning marks arranged at the same position relative to the printing pattern, a means for fixing and holding each of them, and a means for spreading and covering the paste on the printing screen. A means for screen printing a printing pattern on a printed material, a means for measuring the positional coordinates of two alignment marks at the printing execution position of the printing screen and the printing material in the same XY coordinate system, and based on the measurement results. A means for calculating the relative movement amount between the printing screen and the printing substrate necessary for alignment between the printing patterns on the printing substrate, and a means for calculating the relative movement amount between the printing screen and the printing substrate for aligning the printing patterns on the printing substrate based on the calculation result. A printing press with an alignment mechanism, characterized in that it includes means for performing relative movement between the positions.