JP2003266647A - Screen platemaking cleaning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a screen platemaking cleaning device which can efficiently clean a screen platemaking used for screen printing and in which a waste is suppressed to a small value. <P>SOLUTION: The screen platemaking 52 is relatively moved by a pressing member 56 in a state in which a wiping sheet 54 is pressed to an opposed surface 52p of the platemaking 52 under a uniform pressure, thereby removing a stain adhered to the surface 52p opposed to a matter 62 in the platemaking 52. The sheet 54 is wound on a winding roller 58, and cleaned by a new wiping sheet 54, and hence the stain is efficiently removed. Further, the sheet 54 is partly pressed to the platemaking 52 by the member 56 to adhere the stain to the platemaking 52, and hence a waste generated by the cleaning can be suppressed to a small value. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen plate cleaning device for cleaning a screen plate used for screen printing.

[0002]

2. Description of the Related Art One of printing methods for printing a printing paste with a predetermined printing pattern on a printing medium having a flat or cylindrical printing surface is, for example, silk, nylon, tetron, polyester, stainless steel, amorphous. Screen mesh woven with wire materials such as system,
Use a screen plate on which a predetermined pattern is formed on a thin metal plate of copper, nickel, stainless steel, etc. A screen printing method is known in which a predetermined printing pattern is printed on the surface of the printed material. In such a screen printing method, in plane printing in which the surface to be printed has a planar shape, it is common that the screen printing plate and the printing object are fixed and the squeegee is moved along the surface of the screen printing plate, In curved surface printing in which the surface to be printed has a cylindrical shape, it is general that the squeegee is fixed and the screen printing plate is moved in the direction along the surface and the material to be printed is rotated around its axis. is there.

As an example of such screen printing, FIG. 1 is a schematic diagram showing a state of flat printing in which a surface to be printed is flat. The screen plate 10 used for screen printing is, for example, a rectangular frame 12 in which a screen mesh 14 is stretched with a certain tension.
In the plane printing shown in FIG. 2, the squeegee 16 is brought into contact with the surface 14a of the screen mesh 14 on the opposite side of the printing object 18, and is moved in the direction shown by the arrow in the figure, whereby the squeegee 14 moves. 16 is pressed, and a part of the surface 14b of the screen mesh 14 on the printed material 18 side is brought into contact with the surface of the printed material 18. FIG. 2 is an enlarged view showing a portion where the screen mesh 14 and the material to be printed 18 are brought into contact with each other in FIG. As shown in this figure, the screen mesh 14 is provided with a deposition pattern 22 made of, for example, a photosensitive emulsion, and as described above, a part of the surface 14b of the screen mesh 14 on the side of the printing medium 18 is printed. When brought into contact with the surface of the body 18, the printing paste 20 is applied to the openings 2 provided in the deposition pattern 22.
After passing through 2 h, a predetermined print pattern 24 is printed and formed on the surface of the printing medium 18.

[0004]

However, in such screen printing, as shown in FIG. 2, for example, when the printing paste 20 is passed through the opening 22h, the printing paste 20 is rotated around the surface 14b of the screen mesh 14 on the side of the printed material 18. There was a problem in that it adhered intricately and remained as dirt 26. When such stains 26 still remain in the subsequent new screen printing, the stains 26 adhere in stripes or dots on the portion of the surface to be printed where the paste 20 is not desired. Results in print bleeding, poor print quality,
Furthermore, it was a cause of defective printing.

Therefore, in screen printing, a cleaning operation is performed every time printing is performed or every several times in order to remove dirt adhering to the surface of the screen mesh on the side to be printed. For example, an operator manually wipes off the stains with a dedicated wipe or cloth, or manually wipes off the stains, or attaches a weak adhesive tape-like film to the entire surface of the screen mesh on the side to be printed to remove the stains. The screen stencil is cleaned by a means such as attaching the film to the film and removing it.

However, in the above-mentioned manual wiping and cleaning, there is a problem in that the work is remarkably complicated and, in addition, there is a possibility that unevenness in the wiping may occur, so that the operation requires skill. Further, in the cleaning using the above-mentioned weak adhesive tape-shaped film, generally, a necessary amount of the film is appropriately cut and used from a film roll wound in a cylindrical shape, but every time a cleaning operation is performed. Since it is necessary to use a large amount of film, the winding diameter of the film roll is inevitably large and it is difficult to handle the film roll itself. In addition, the cleaning work using such a film causes a large amount of waste, and when there is a partial defect in the film, there is a problem that the stain remains without being removed. .

The present invention has been made in view of the above circumstances, and an object thereof is to make it possible to efficiently clean a screen printing plate used for screen printing and to reduce the amount of waste. To provide a device.

[0008]

In order to achieve the above object, the gist of the present invention is to provide a screen plate cleaning device for removing dirt adhering to the surface of the screen plate facing the substrate to be printed. And (a) a wiping sheet that is disposed in a rolled state and that removes the stains by adhering the stains to the surface of the rolls; The screen wiper includes a pressing member for pressing an opposite surface of the screen plate facing the substrate to be printed, and (c) a winding roller for winding up the wiping sheet having the dirt attached to the surface thereof. While the pressing sheet is pressed by the pressing member against the surface of the screen plate facing the substrate to be printed, the pressing member is moved in one direction relative to the screen plate to remove the dirt. It is characterized in that it is intended to remove.

[0009]

According to the present invention, the pressing member presses the wiping sheet with a uniform pressure against the surface of the screen plate that faces the object to be printed, and is opposed to the screen plate. By moving it, it is possible to uniformly remove stains adhering to the facing surface of the screen plate that faces the object to be printed. Further, since the wiping sheet is taken up by the take-up roller and cleaned with a new wiping sheet as appropriate, the dirt can be efficiently removed. Further, since the wiping sheet is partially pressed by the pressing member against the screen plate making it continuously adhere the dirt to the surface thereof, it is possible to suppress the waste generated by the cleaning operation to be small. it can. That is, it is possible to provide a screen plate-making cleaning device that can efficiently clean the screen plate-making plate used for screen printing and reduce waste.

[0010]

Other Embodiments Here, preferably, the screen plate making cleaning device has a case capable of relative movement in one direction along an opposing surface of the screen plate making, and the wiping is provided in the case. The take-up sheet, the pressing member, and the take-up roller are arranged. By doing so, the screen plate cleaning device itself is relatively moved in one direction with respect to the stationary screen plate, so that the stains adhered to the facing surface of the screen plate facing the substrate to be printed can be efficiently removed. Can be removed. Also,
When screen printing is performed, the screen plate cleaning device can be moved to a place that does not interfere with printing.

Further, preferably, the pressing member is a cylindrical member arranged in the screen plate-making cleaning device so as to be rotatable around its axis. With this configuration, the cylindrical member can bring the wiping sheet into contact with the facing surface of the screen printing plate that faces the printing target material in a necessary and sufficient area, and faces the printing target plate of the screen printing plate. It is possible to more efficiently remove the dirt attached to the facing surface.

Further, preferably, the cylindrical member is rotationally driven around its axis. By doing so, a new wiping sheet can be sequentially brought into contact with the facing surface of the screen printing plate that faces the object to be printed by the cylindrical member that is rotationally driven, and the wiping sheet can be efficiently soiled with the dirt. Since it can be attached efficiently, the stains attached to the surface of the screen plate that faces the object to be printed can be removed more efficiently.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the drawings. In the drawings used in the following description, the dimensional ratio of each part is not necessarily drawn accurately.

FIG. 3 is a schematic view showing the construction of a screen plate making cleaning apparatus 50 which is an embodiment of the present invention. As shown in this figure, the screen plate-making cleaning device 50 of the present embodiment.
Is used to remove stains such as a printing paste attached to the facing surface 52p of the screen plate 52 that faces the object to be printed. (A) A width substantially equal to the width dimension of the screen plate 52. The wiper sheet 54 is provided in a state of being wound into a roll with dimensions, and the surface 54f is provided with the wiping sheet 54 for removing the dirt by adhering the dirt, and (b) the wiping sheet 54 Opposing surface 52 of the screen plate 52 that faces the material to be printed
a long pressing member 56 having a length substantially equal to that of the wiping sheet 54 in order to press p, and (c) for winding up the wiping sheet 54 having the dirt attached to its surface 54f. A take-up roller 58, and the pressing sheet 56 is pressed against the screen plate 52 by the pressing member 56 against the surface 52p of the screen plate 52 that faces the object to be printed. The dirt is removed by relative movement in one direction, that is, in the direction indicated by the arrow in the figure.

Here, preferably, as shown in FIG. 3, the screen plate-making cleaning device 50 of the present embodiment is arranged in one direction along the facing surface 52p of the screen plate-making plate 52, that is, in the direction shown by the arrow in the figure. A movable longitudinal case 60 is provided, and the wiping sheet 54, the pressing member 56, and the winding roller 58 are arranged in the case 60 in parallel with the width direction of the screen plate 52. It is a thing. The case 60 is, for example, a rectangular parallelepiped in which an opening 60h for projecting the pressing member 56 is provided on a surface facing the screen plate 52, and a bottom surface thereof, that is, a surface forming a pair with the surface provided with the opening 60h. A pair of leg portions 60l to be fitted into a rail 64 to be described later is fixed to both ends of the.

FIG. 4 is a diagram showing how the screen plate-making cleaning device 50 of this embodiment is used in a general screen printing machine. FIG. 4A shows a printing surface 62 of a printing material 62.
FIG. 3B is a plan view seen from a direction perpendicular to f, and FIG. As shown in this drawing, in the screen plate making cleaning apparatus 50 of the present embodiment, a pair of rails 64 arranged in parallel to a direction perpendicular to the longitudinal direction of the screen plate cleaning apparatus 50 has leg portions 60l provided at both ends of its bottom surface. By inserting the case 6
0 is movably arranged along the facing surface 52p,
The case 60 is reciprocally driven by being connected to a drive soup rocket 68 of a servo motor 66 provided near one end of each rail 64 via a chain 70. The chain 70 is wound around a sprocket 72 provided near the end of each rail 64 on the side where the servo motor 66 is not provided, and as shown in FIG. The screen plate cleaning device 50 has an annular shape that is bonded to a pair of surfaces perpendicular to the traveling direction.

In the screen plate-making cleaning device 50 arranged as shown in FIG. 4, the wiping sheet 54 is the pressing member 5.
6, the servo motor 66 is driven with the uniform pressure applied to the facing surface 52p of the screen plate 52 that faces the object 62 to be printed, so that the screen plate cleaning device 50 causes the rail 64 to move.
The upper surface is relatively moved in one direction, that is, in a direction indicated by an arrow in the drawing, along the facing surface 52p of the screen plate 52 that faces the object 62 to be printed.
The stains attached to the facing surface 52p of the printed sheet 62 facing the object 62 to be printed are uniformly removed. In addition, the wiping sheet 5
4 is taken up by the take-up roller 58 and cleaned with a new wiping sheet 54 as appropriate, so that the stains are efficiently removed. Further, the wiping sheet 54
Is partially pressed by the pressing member 56 against the screen plate 52 to continuously remove the dirt on the surface 54 thereof.
Since it is attached to f, the amount of waste generated by the cleaning work can be reduced.

In particular, PDP (Plasma Dis)
Regarding the electrode printing of a play panel (plasma display panel), the screen printing plate 52 is manually produced because the substrate to be printed is relatively large.
In addition to the extremely complicated work of cleaning, the high printing accuracy is required and, for example, a slight printing bleeding or the like directly leads to defective printing. It is possible to shorten the time and perform more accurate screen printing.

The relative movement direction of the screen plate making cleaning device 50 with respect to the screen plate making 52 is preferably the same as the direction of relative movement of the squeegee (not shown) with respect to the screen plate making 52 at the time of screen printing. This is because the screen engraving plate 52 is generally moved relative to the squeegee while being pressed, and is designed to have durability against being pressed in such a direction. That is, the screen plate making cleaning device 5
If the relative movement direction of 0 to the screen printing plate 52 is the same as the relative movement direction of the squeegee to the screen printing plate 52 during screen printing, the screen printing plate 52 does not affect the life of the screen printing plate 52.
The dirt adhering to the facing surface 52p can be efficiently removed.

In screen printing, the screen plate making cleaning device 50 is moved to a position EP shown by a chain line in FIG. 4, for example. Then, in the figure (a)
By moving the printing table 74 shown in FIG. 1 in one direction indicated by a chain line arrow in the drawing, that is, in the lower direction of the drawing, the printing medium 62 placed on the printing table 74 is arranged immediately below the screen plate 52. Then, after screen printing is performed and a predetermined printing pattern is formed on the printing surface 62f of the printing object 62, the printing platform 74 is moved in one direction indicated by a chain arrow in the drawing, that is, in the upper direction of the drawing, The printed substrate 62 that has been printed and the new substrate 62 that has not been screen printed yet are replaced. The cleaning of the screen plate 52 by the screen plate cleaning device 50 is performed, for example, during this period, and it is most preferable that the cleaning is performed every time the screen printing is performed, but it is appropriately performed while confirming the degree of contamination of the screen plate 52. It may be one. Note that in FIG. 4B, the printing object 62 and the printing table 74 are omitted for simplification.

Here, the wiping sheet 54 of this embodiment is wound up by the winding roller 58 as described above, and is sequentially fed in the direction shown by the chain line arrow in FIG. Efficient cleaning is performed by pressing the screen plate 52. The wiping sheet 54 is not necessarily continuously fed while cleaning is performed, and may be, for example, a prescribed length each time cleaning is performed, or a screen may be fed. Plate making cleaning device 5
Each time 0 moves relative to the screen plate 52 by a predetermined distance, it is sent by a predetermined length. Further, as shown in FIG. 3, for example, a pair of sheet feeding rollers 7 is provided between the wiping sheet 54 wound in a roll shape and the pressing member 56.
Similarly, a pair of sheet feeding rollers 78 are respectively arranged between the pressing member 56 and the winding roller 58, and the sheet feeding rollers 76 and 78 are respectively in the directions indicated by arrows in the drawing, that is, the wiping sheet. It is more preferable to rotate 54 in the direction of sending out in the direction indicated by the chain line arrow in the figure. By doing so, the wiping sheet 54 can be fed more stably and reliably.

Further, as shown in FIG. 3, the pressing member 56 of the present embodiment is a cylindrical member disposed on the pair of support members 80 at both ends thereof so as to be rotatable about its axis. . The supporting member 80 is preferably disposed on the case 60 via, for example, a spring to press the pressing member 56 against the facing surface 52p of the screen plate 52 with a constant pressing force. In this way, when the pressing member 56 is a cylindrical member arranged so as to be rotatable about its axis, the wiping sheet 54 is provided on the facing surface 52p of the screen plate 52 by the cylindrical member. Pressed with a constant contact area. In this contact area, the pressing member 56 is the screen plate 52.
Since the adjustment can be made by adjusting the pressing force for pressing the facing surface 52p, the wiping sheet 54 is brought into contact with the facing surface 52p of the screen plate 52 by a necessary and sufficient area by the cylindrical pressing member 56. Can be made. Further, more preferably, the cylindrical pressing member 56 is driven to rotate about its axis, and by doing so, a new wiping is sequentially performed by the rotationally driven cylindrical pressing member 56. Since the picking sheet 54 can be brought into contact with the facing surface 52p of the screen plate 52 and the dirt can be efficiently attached to the wiping sheet 54, the dirt attached to the facing surface 52p of the screen plate 52 can be effectively cleaned. Can be removed more efficiently.

As described above, according to the present embodiment, the pressing member 56 presses the wiping sheet 54 with a uniform pressure against the facing surface 52p of the screen plate 52 that faces the material 62 to be printed. By moving the screen plate 52 relative to the screen plate 52, it is possible to uniformly remove the stains attached to the facing surface 52p of the screen plate 52 that faces the substrate 62 to be printed. Further, the wiping sheet 54 has the winding roller 58.
The dirt is efficiently removed because the dirt is efficiently wound up and cleaned with a new wiping sheet 54 as appropriate.
Further, since the wiping sheet 54 is partially pressed against the screen plate 52 by the pressing member 56 to continuously adhere the dirt to the surface thereof, the waste generated by the cleaning operation is reduced. Can be suppressed. That is, it is possible to provide the screen plate-making cleaning device 50 that can efficiently clean the screen plate-making plate 52 used for screen printing and reduce waste.

Further, preferably, the screen plate making cleaning device 50 has a case 60 which is relatively movable in one direction along the facing surface 52p of the screen plate making 52, and the case 60 has the wiping member. Since the take-up sheet 54, the pressing member 56, and the take-up roller 58 are arranged, the screen plate-making cleaning device 50 itself is relatively moved in one direction with respect to the stationary screen plate-making 52. Therefore, it is possible to efficiently remove the dirt attached to the facing surface 52p of the screen plate 52 that faces the object 62 to be printed. Also, when screen printing is performed, the screen plate cleaning device 50
Can be moved to a position EP that does not interfere with printing.

Further, preferably, the pressing member 56 is a cylindrical member disposed in the screen plate-making cleaning device 50 so as to be rotatable around its axis, and therefore the pressing member 56 is formed by the cylindrical member. Opposing surface 5 of the wiping sheet 54 facing the material 62 to be printed in the screen plate 52.
It is possible to contact the 2p with a necessary and sufficient area, and it is possible to more efficiently remove the dirt attached to the facing surface 52p of the screen plate 52 that faces the object 62 to be printed.

Further, preferably, since the cylindrical member is driven to rotate about its axis, a new wiping sheet 54 is successively cleaned by the cylindrical pressing member 56 which is driven to rotate. Printing target 62 in plate making 52
The wiper sheet 54 can be brought into contact with the facing surface 52p that faces the sheet, and the dirt can be efficiently attached to the wiping sheet 54.
The dirt adhering to the facing surface 52p facing 2 can be more efficiently removed.

Next, another embodiment of the present invention will be described. In the drawings used in the following description, the same parts as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted.

FIG. 5 is a schematic view showing the construction of a screen plate making cleaning apparatus 90 which is another embodiment of the present invention. As shown in this figure, the screen plate cleaning device 9 of this embodiment
In addition to the configuration of the screen plate making cleaning device 50 described above, 0 is a pressing member 56 with respect to the relative movement direction of the screen plate making cleaning device 90 indicated by an arrow with respect to the screen plate making 52.
A solvent case 94 that is disposed in front of and is pumped with a solvent 92 such as ethanol or acetone.
And its solvent 92 on the opposite surface 52p of the screen plate 52.
And a solvent coating roller 96 for coating the same. According to such a configuration, the solvent 9 is provided in front of the position where the wiping sheet 54 is pressed against the facing surface 52p of the screen plate 52 by the pressing member 56 in the relative movement direction of the screen plate cleaning device 90 with respect to the screen plate 52.
Since 2 is applied to the screen plate 52 by the solvent application roller 96, the stains are preferably released by the solvent 92, and the stains attached to the facing surface 52p of the screen plate 52 can be removed more efficiently.

FIG. 6 is a schematic view showing the construction of a screen plate making cleaning apparatus 100 which is still another embodiment of the present invention. As shown in this figure, the screen plate making cleaning apparatus 100 of the present embodiment is replaced with the cylindrical pressing member 56 of the screen plate making cleaning apparatus 50 described above, and has a partially cylindrical curved portion 102r and a flat surface portion on a plane. 102p and an edge 102 that is a boundary between the local portion 102r and the plane portion 102p.
and a pressing member 102 including e.
The pressing member 102 is, as shown in FIG. 6, a screen plate making 52 of the screen plate making cleaning device 100 shown by an arrow.
The plane portion 102p is arranged so that the local portion 102r is rearward and the plane portion 102p is forward with respect to the relative movement direction. According to such a configuration, in the wiping sheet 54 pressed against the facing surface 52p of the screen plate 52 by the pressing member 102, dirt can be efficiently removed by the portion corresponding to the edge 102e, and the local portion 10
Since 2r ensures an appropriate contact area between the screen plate 52 and the wiping sheet 54, it does not affect the life of the screen plate 52.

The preferred embodiment of the present invention has been described in detail with reference to the drawings. However, the present invention is not limited to this and can be carried out in another mode.

For example, although the sheet feeding rollers 76 and 78 are provided in the above-described embodiment, they are not necessarily provided, and the sheet feeding roller 62 is not necessarily provided.
Alternatively, either one of 64 or 64 may not be provided.
Further, in the above-mentioned embodiment, the sheet feeding roller 7
Each of 6, 78 is driven to rotate about its axis in the direction shown by the arrow in FIG. 3, but these may not necessarily be driven to rotate and either sheet feed roller 62 or 64 may be used. Only one of them may be rotationally driven, or none of them may be rotationally driven.

Further, in the above-mentioned embodiment, the screen plate-making cleaning device 50 itself is moved in one direction with respect to the stationary screen plate-making cleaning device 52. The screen plate 52 itself may be relatively movable in one direction.

Although not illustrated one by one, the present invention is implemented with various modifications within the scope of the invention.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a state of plane printing in which a surface to be printed has a plane shape as an example of screen printing.

FIG. 2 is an enlarged view showing a portion where a screen mesh and an object to be printed are brought into contact with each other in FIG.

FIG. 3 is a schematic diagram showing a configuration of a screen plate making cleaning apparatus that is an embodiment of the present invention.

FIG. 4 is a diagram showing how the screen plate-making cleaning device of this embodiment is used in a general screen printing machine,
(A) is a plan view seen from a direction perpendicular to a printing surface of a printing medium, and (b) is a front view.

FIG. 5 is a schematic view showing the configuration of a screen plate making cleaning apparatus which is another embodiment of the present invention.

FIG. 6 is a schematic view showing a configuration of a screen plate making cleaning apparatus which is still another embodiment of the present invention.

[Explanation of symbols]

50, 90, 100: Screen plate-making cleaning device 52: Screen plate making 52p: Opposing surface 54: Wiping sheet 54f: surface of wiping sheet 56, 102: pressing member 58: Take-up roller 60: Case

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tetsuro Nakamura             2160 Yatsunami, Sanjo, Yasu-cho, Asakura-gun, Fukuoka Prefecture             Address Noritake Electronics Co., Ltd. F term (reference) 2C035 AA06 FD01 FD42 FE01 FF25                       FF26                 2C250 FA06 FB03 FB06 FB09 FB14

Claims (4)

[Claims] 1. A screen plate-making cleaning device for removing dirt adhering to an opposite surface of a screen plate-making member, which is opposed to an object to be printed, the screen plate-making cleaning device being arranged in a rolled state and having the dirt on the surface thereof. A wiping sheet for removing the stain by adhering to the surface, a pressing member for pressing the wiping sheet against the surface of the screen plate facing the substrate to be printed, and attaching the stain to the surface And a take-up roller for taking up the wiped sheet, wherein the press member is pressed by the press member against an opposing surface of the screen plate facing the substrate to be printed. A screen plate cleaning apparatus, wherein the dirt is removed by moving the screen plate in one direction relative to the screen plate. 2. The screen plate-making cleaning device has a case capable of relative movement in one direction along an opposing surface of the screen plate-making machine, and the wiping sheet, the pressing member, and the case inside the case. The screen plate making cleaning apparatus according to claim 1, wherein a winding roller is provided. 3. The screen plate making cleaning apparatus according to claim 1, wherein the pressing member is a cylindrical member arranged in the screen plate making cleaning apparatus so as to be rotatable about its axis. 4. The screen plate cleaning apparatus according to claim 3, wherein the cylindrical member is driven to rotate about its axis.