KR100963443B1 - The apparatus and method for rotary screen printe - Google Patents

Abstract

The present invention relates to a rotary screen printing apparatus and method, by using a screen plate rotated in place by a drive motor and a squeegee and a scraper formed on one side, rotary screen printing to enable continuous work without breaking the print pattern on the fabric An apparatus and method are provided.

Therefore, according to the present invention, as the predetermined pattern is continuously printed on the fabric proceeding in the same direction by engaging the screen plate rotated in place, the squeegee and the scraper repeatedly reciprocate the elimination of the printing pattern that appears in the conventional screen printing apparatus. By eliminating the job, it is possible to improve productivity by eliminating time loss during printing. In particular, there is an excellent effect on a printing method using ink having a large pigment size.

Screen printing machine, rotary type, silk printing machine, EL, organic EL, inorganic EL, electroluminescence, printing method

Description

Rotary screen printing apparatus and method {The apparatus and method for rotary screen printe}

1 is a perspective view of a rotary screen printing apparatus according to the present invention.

2 is a plan view of a rotary screen printing apparatus according to the present invention.

3 is a cross-sectional view of the rotary screen printing apparatus according to the present invention.

Figure 4 is a flow chart illustrating a rotary screen printing method of the present invention.

<Explanation of symbols for main parts of drawing>

100: rotary screen printing device 101: screen plate

103: squeegee 109: scraper

110: drive motor 125: toothed gear

128: rotating roller 130: screen

140: Ink 142: Printed Fabric

The present invention relates to a rotary screen printing apparatus and method, and more particularly, using a screen plate that is rotated in place by a drive motor and a squeegee and a scraper formed on one side, continuously printing without breaking the print pattern on the fabric It relates to a rotary screen printing apparatus and method capable of working.

In general, screen printing forms a screen net having a predetermined printing pattern on a square screen plate with microfibers such as silk, teflon, polyester, and nylon, and fixes the screen plate so as not to move from side to side, thereby screening ink. It is poured into the net and the scraper and squeegee are moved back and forth to print on the fabric.

In the conventional screen printing method as described above, after supplying a fabric having a predetermined standard to the lower portion of the screen platen, the ink passing through the printing pattern formed on the screen network is transferred to the fabric and printed, and the printed fabric is again the same. Standard fabric is supplied and printed repeatedly.

Such a conventional screen printing method does not print the size of the printing pattern within the specifications of the screen platen continuously without a break in the fabric, so that the continuous printing operation without a break in the long length direction should be performed using screen plate making The work was impossible.

Accordingly, in order to solve the problem of the conventional screen printing method, which is printed more by one unit, a roll screen printing machine has been introduced to print seamlessly on a roll fabric. Such a roll screen printing machine forms a screen plate of a predetermined size in the same manner as a printing method of a conventional screen printing machine, and then continuously supplies the printed fabric in a roll state to the lower portion of the screen plate, and the ink is moved by a scraper and a squeegee which are moved back and forth. By printing on the fabric, the scraper and the squeegee are moved again to connect the end point of the print pattern and the start point of the print pattern so that the print pattern and the print pattern are connected to be printed on the rolled fabric without any break. Configured.

As described above, a technology for printing an electronic circuit pattern and a technology for simply printing a color through the general conventional screen printing method and roll screen printing method are being developed.

In the case of using a conventional roll screen printer to connect a predetermined pattern using conductive electronic ink, if the ink portion of the print palm point and the print start point overlaps a certain portion, a difference in resistance between the overlapping portion and the non-overlapping portion is generated. There was a problem that can not produce quality. Further, in order to solve the problems shown in the roll screen printer as described above, using the gravure printer connected to the printing pattern was able to solve the problem of seamless printing pattern. However, in the case of gravure printing machine, the amount of ink printing is controlled according to the printing dot shape of the gravure printing copper plate and the depth of the dot. In some of the conductive electronic ink, the size of the pigment is large, so that the ink is placed on the printing gravure printing plate of the gravure printing copper plate. Even if it is not supported or placed on it, there is a problem that a pinhole phenomenon occurs in which a printing part is formed after some pigments are embedded in the dots and printed.

Therefore, the present invention is to solve the problems as described above, as the printing fabric in the roll state is engaged in the same direction by engaging the screen plate is rotated in place in a predetermined pattern is continuously printed in the conventional screen printing apparatus It eliminates breaks in print patterns and eliminates repeated squeegee and scraper reciprocation, minimizing time loss during printing to improve productivity, and providing a rotary screen printing method to enable printing of large ink sizes. It is.

Rotary screen printing apparatus 100 according to the present invention for achieving the above object, the screen plate 101 is rotated in place by the drive motor; A drive motor 110 for rotating the screen plate; A scraper 109 formed to apply ink filled in the screen plate to a predetermined thickness; A squeegee 103 formed to transfer ink applied by the scraper to a printing fabric; It characterized in that it comprises a; rotating roller 128 is formed on the lower portion of the printing squeezing squeegee to pass smoothly without scratching the printing fabric.

In addition, the rotary screen printing method according to the present invention for achieving the above object, the first step of filling the ink on the screen plate after placing the lower portion of the rotary screen platen to release the roll; A step 2 in which the scraper fixed to the upper portion of the screen plate is lowered to apply the filled ink to a predetermined thickness; Three steps of applying ink by a scraper while rotating the screen platen by the driving motor; Four steps of squeegee descending to transfer the applied ink to the printing fabric at the printing start point of the screen; The screen platen is stopped by the driving motor when the print palm point is reached, and the scraper and the squeegee are lifted up.

Hereinafter, a rotary screen printing apparatus and method according to the present invention will be described in detail with reference to the accompanying drawings.

First, referring to Figures 1 to 3 will be described in detail the configuration of the rotary screen printing apparatus according to the present invention.

As shown in FIG. 1, the rotary screen printing apparatus 100 according to the present invention includes a screen plate 101 that is rotated in place by the drive motor 110 and a drive motor that rotates the screen plate 101. 110, the scraper 109 is formed to apply the ink 140 injected into the screen 130 formed on the screen plate 101 to a predetermined thickness, and the ink 140 applied by the scraper 109 is printed. It is configured to include a squeegee 103 is formed to transfer to the original fabric (142).

Here, the screen plate 101 is attached to the screen 130 in a circular frame so that it can be rotated in place by the drive motor 110 to form a predetermined printing pattern on the screen 130 ink 140 Is configured to exit through the screen dots. In addition, the screen plate 101 is formed in the frame of the screen plate 101 to rotate the toothed gear 125 that can receive the power of the drive motor 110, the screen plate 101 is in place It is configured to be able to rotate.

The screen 130 attached to the screen plate 101 is composed of a rotating screen plate that is continuously rotated so that printing patterns do not overlap or breaks during printing by the squeegee 103. It can produce a constant quality of the pattern. In addition, when printing through a conventional gravure printing copper plate, a large pigment contained in the ink is embedded in one side of the printing copper plate and some pigments are continuously accumulated due to the pinhole phenomenon and the resistance change that occurs when printing is severely generated. In case screen screen dots are used, the printing dots can be secured larger than the size of a large pigment, so that ink can easily pass from the top surface to the bottom surface to obtain a stable printing pattern and resistance.

In addition, the driving motor 110 is formed at one side to rotate the screen plate 101 in place, and the toothed gear 125 is formed in the drive motor 110 to help the screen plate 101 rotate. .

The scraper 109 serves to apply the injected ink 140 to the printing pattern to a predetermined thickness. The scraper 109 is formed to have a length shorter than the radius of the screen plate 101, and is located on top of the screen plate 101. After the ink 140 is injected into the screen plate 101 and rotated at the printing start point, the scraper 109 located at the upper portion is lowered to a predetermined height at the printing start point of the screen plate 101 and coated with a predetermined thickness. .

On the other hand, the squeegee 103 serves to transfer the ink 140 applied on the screen plate 101 to the printing fabric 142. The squeegee 103 is positioned in the width direction from the top through which the print fabric 142 passes and then descends when the print start point reaches the squeegee 103 to transfer the ink 140 to the print fabric 142.

The scraper 109 and the squeegee 103 is fixed to the upper portion of the screen plate 101, to be formed wider than the width of the print pattern formed on the screen plate 101, lowered at a fixed position during printing, and raised at the end of printing It is configured to.

Then, the rotating roller 128 is configured to be engaged in the same direction by engaging the same speed and rotational speed of the screen plate 101 as shown in Figure 3, the printing roller 142 is the lower portion of the rotating roller to be crushed It is configured to form a 128 to prevent the smooth progress and scratching of the print fabric (142).

Hereinafter, the rotary screen printing method according to the present invention will be described in detail.

A first step of releasing the rolled fabric and placing the lower portion of the rotary screen platen to fill ink into the screen platen; A step 2 in which the scraper fixed to the upper portion of the screen plate is lowered to apply the filled ink to a predetermined thickness; Three steps of applying ink by a scraper while rotating the screen platen by the driving motor; Four steps of squeegee descending to transfer the applied ink to the printing fabric at the printing start point of the screen; The screen platen is stopped by the driving motor when the print palm point is reached, and the scraper and the squeegee are lifted up.

4 is a flowchart illustrating a rotary screen printing method according to the present invention.

First, the printing fabric 142 in the rolled state is released and placed on the printing start point of the lower portion of the rotating screen plate 101, and the first step of filling the ink 140 into the screen plate 101 is performed.

Thereafter, in order to apply the filled ink 140 to a predetermined thickness, the scraper 109 fixed to the upper portion of the screen plate 101 is lowered to perform a second step. (W200)

The scraper 109 properly adjusts the coating thickness of the ink 140 by adjusting the height of the top and bottom in the fixed position.

Then, three steps of rotating the screen plate 101 in place through the toothed gear 125 rotated by operating the driving motor 110 are performed.

At this time, while the ink 140 filled in the screen plate 101 is rotated, the ink 140 escapes through a gap between the scraper 109 lowered to a predetermined height and the rotated screen 130. To be applied onto the screen.

Here, after the application of the ink 140 to a predetermined thickness on the screen 130, the squeegee 103 is performed to descend the ink so as to transfer the ink applied at the printing start point of the screen to the printing fabric 142. (N400)

When the lowered squeegee 103 crushes the screen 130, the printing fabric 142, and the rotating roller 128 at the same time, the ink 140 on the rotating screen 130 is transferred to the printing fabric 142. . Thereafter, the print fabric 142 formed between the squeegee 103 and the rotary roller 128 passes through the crushed portion by the squeegee 103, and the screen 130 and the print fabric 142 are separated out.

Then, when the screen 130 reaches the print palm point, the screen plate 101 stops rotating by the driving motor 110, and the scraper 109 and the squeegee 103 go up five steps. )

The squeegee 103 rises after releasing the press of the screen 130, the printing fabric 142, and the rotary roller 128, and at the same time the rotation of the screen plate 101 stops, and the squeegee 103 and the scraper 109 Return to the original position on the top of the screen plate 101 to complete the printing.

It is to be understood that the invention is not to be limited to the specific forms referred to in the foregoing description, but rather includes all modifications, equivalents and substitutions that fall within the spirit and scope of the invention as defined by the appended claims. It must be understood.

As described above, the rotary screen printing apparatus and method of the present invention can remove the overlapping printing or disconnection of the printing pattern while the rolled printing fabric is engaged in the same direction by engaging the screen platen rotated in place. By eliminating repetitive squeegee and scraper reciprocating work that appeared in the screen printing machine, it is possible to improve productivity by minimizing time loss during printing, and it is possible to obtain the effect of printing ink with large pigment size.

Claims (8)

A screen plate rotated in place by a drive motor; A driving motor for rotating the screen plate; A scraper formed to apply the ink filled in the screen plate to a predetermined thickness; A squeegee formed to transfer ink applied by the scraper to a printing fabric; It is configured to include; a rotating roller formed in the lower portion of the printing fabric pressed by the squeegee to pass smoothly without scratching the printing fabric, And the rotary roller is rotated in the same direction by engaging at the same speed as the rotational speed of the screen platen, the rotary screen printing apparatus. The method according to claim 1; Screen printing device, characterized in that formed in a circle to rotate in place, a rotary screen printing apparatus. The method according to claim 1; A serrated gear is formed on the screen plate so that the screen plate can be rotated by the power of the driving motor. The method according to claim 1; Rotating screen printing device, characterized in that the squeegee and the scraper is fixed and printed when printing. delete A first step of releasing the rolled fabric and placing the lower portion of the rotary screen platen to fill ink into the screen platen; A step 2 in which the scraper fixed to the upper portion of the screen plate is lowered to apply the filled ink to a predetermined thickness; Three steps of applying ink by a scraper while rotating the screen platen by the driving motor; Four steps of squeegee descending to transfer the applied ink to the printing fabric at the printing start point of the screen; And a scraper and a squeegee rise as the screen platen stops rotating by the driving motor when the print end point is reached. 5. The method according to claim 6; In step 4, The squeeze is characterized in that descending to the printing start point of the rotating screen plate, the rotary screen printing method. The method according to claim 6; In step 5, And the squeeze and scraper are raised upon reaching the screen printing end point to prevent application of ink to the printing fabric beyond the printing range of the rotating screenplate.

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