JP2005305663A - Screen printing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize the smooth snap of a screen plate 1 off a work piece 6. <P>SOLUTION: A screen printing machine for performing screen printing on the work piece with a screen makeup 100 having the screen plate 1 and a screen frame 5 and a squeegee 3 is equipped with a screen makeup mounting part for fixing the screen makeup 100 to a main body, a table 10 for arranging the work piece 6, a tube 91 arranged between the screen plate 1 of the screen makeup 100 fixed to the main body by the screen makeup mounting part and a fluid controlling part 96 for separating the screen plate 1 from the work piece 6 by changing the shape of the tube through the controlling of the pressure of the fluid within the tube 91 during the printing onto the work piece 6 arranged on the table 10 with the squeegee 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an anti-separation mechanism for a screen printing machine. In particular, an object of the present invention is to provide a plate separation mechanism that can maintain the tension of the screen and achieve high accuracy and long life by separating the plate using a tube.

In conventional screen printing, there is a gap of several mm between the screen plate making and the work to be printed, and after supplying ink to the screen plate making, the screen plate making is pushed downward by a squeegee to extend the screen plate making. Printing was performed on the workpiece by moving the squeegee toward the front so that the plate-making was brought into close contact, and separating the screen-making from the workpiece by the tension of the screen-making.
For example, a clearance of 2 to 6 mm was provided as the screen frame size increased to about 1.5 mm when the screen frame size was 320 mm, and the screen frame size increased to 1000 mm to 2500 mm or more. Alternatively, a larger gap was required.

On the other hand, there has been a problem that the screen-making screen is difficult to peel off from the workpiece. In order to solve this problem, a technique for rolling a roller between a screen and a workpiece or forcibly lifting an end of the screen is disclosed.
JP 2000-085102 A JP 2000-117932 A JP 2000-3436372 A JP 2001-103418 A

  When a roller is rolled between the screen and the workpiece in order to remove the screen-making screen from the workpiece, there is a risk of rubbing the back surface of the screen due to friction and breaking the printing pattern. In addition, when the edge of the screen is forcibly lifted in order to peel off the screen-making screen from the work, the screen tension is weakened and the life of the screen-making is shortened, and the printing accuracy may be deteriorated. .

  SUMMARY OF THE INVENTION An object of the present invention is to provide a plate separating mechanism that does not damage the back surface of the screen and that can maintain the screen tension and achieve high accuracy and long life.

A screen printing machine according to the present invention is a screen printing machine for performing screen printing on a work using a screen plate making and a squeegee having a screen plate and a screen frame.
The body,
A screen plate making attachment for fixing the screen plate making to the main body;
A table arranged opposite to the screen plate making, and a work placement table;
A tube arranged on the table side of the screen plate of the screen plate making fixed to the main body by the screen plate making attachment;
And a fluid control unit that controls the pressure of fluid inside the tube to change the shape of the tube and pulls the screen plate away from the workpiece during printing on the work placed on the table by the squeegee.
The fluid control unit controls a supply amount of fluid to be supplied based on a printing position of the squeegee.

  The tube is characterized in that the squeegee extends and is arranged at the end of the table where printing starts.

  The tube is arranged to extend to the end portions of the tables on both sides of the printing area of the squeegee.

  The screen printing machine includes a pressing unit that presses the tube while moving as the squeegee moves.

The screen printing machine further includes:
A screen sealing portion that substantially seals the space between the screen plate and the table;
And a supply section for supplying gas to a substantially sealed space between the screen plate and the table.

  According to the present invention, the separation of the screen plate 1 from the work 6 can be made smooth, and the printing accuracy can be improved. Further, the life of the screen plate making can be extended.

Embodiment 1 FIG.
FIG. 1 is a top view of a table portion of the screen printing machine according to the first embodiment.
In FIG. 1, 10 is a table, 121 is an opening that is a supply hole for supplying gas toward the screen plate making 100 described later, and 123 is a suction port. On the top surface of the table 10, there are provided a total of eight openings 121 each having a long hole shape along each side of the substantially rectangular table 10. The suction port 123 is arranged and fixed on the table by sucking the substrate. The suction port 123 is a slit-shaped hole having a width of about 3 to 5 mm, and there are various shapes such as a rod shape and an L shape. Reference numeral 129 denotes a transport roller hole for storing a roller for transporting the workpiece.
The opening 121 is formed at a position that does not contact the substrate when the suction port 123 is fixed to the table by sucking the substrate. As will be described later, the opening 121 supplies gas toward the screen plate making 100.
Moreover, in FIG. 1, 91 and 93 are tubes. Reference numerals 94 and 95 denote pipes that send air to the tubes 91 and 93. A fluid control unit 96 sends air to the tubes 91 and 93 using the pipes 94 and 95. The fluid control unit 96 may send other gases, liquids such as water, or other fluids instead of air.
Here, the tube refers to a flexible tube or a flexible tube. A long, thin, hollow thing. For example, it is a rubber tube that swells when it is filled with air at atmospheric pressure or higher.

FIG. 2 is a cross-sectional view of the table portion of the screen printing machine according to the first embodiment.
In FIG. 2, 1 is a screen plate, 5 is a screen frame, 11 is a spring support, 100 is a screen plate making, 131 is a screen receiving portion, 132 is a sealing auxiliary portion, 133 is a convex portion, and 141 is , A sponge that is a packing material, 142 is a sponge that is a packing material, and 150 is a spring material.
The screen plate making 100 includes a screen plate 1 and a screen frame 5. The screen sealing portion includes a screen receiving portion 131 and a sealing auxiliary portion 132. The screen receiving part 131 includes a convex part 133. The table 10 is the same as in FIG.

  In FIG. 2, the table 10 is arranged to face the screen plate making 100. The table 10 has a substantially quadrangular prism shape, and a sealing auxiliary portion 132 is held on the side surface of the table 10 with a clearance fit. That is, the sealing assisting part 132 is slidably arranged with the table 10. The sealing assisting part 132 is formed in a substantially square frame shape in conformity with the table 10, and the sealing assisting part 132 is provided on the table 10 via a plurality of spring members 150 by the spring support 11 fixed to the table 10 with several bolts. 10 side surfaces are held. The sealing assisting part 132 is pressed and held by the screen receiving part 131 via a sponge 142 formed in a substantially square frame shape with the upper surface matching the shape of the upper surface of the sealing assisting part 132.

  The screen receiver 131 is fixed to the printing machine body. The convex part 133 which is a part of the screen receiving part 131 is formed in a substantially square frame shape so as not to protrude from the inside or outside of the frame of the sealing auxiliary part 132. The convex portion 133 is formed in an annular shape, and is convex downward so as to press the sponge 142. By forming the convex downward, the pressing area is made smaller than when the sponge 142 is pressed on a wide plane, and the pressure against a certain pressing force is increased rather than pressing the sponge 142 on a wide plane.

  The sealing assisting part 132 is held between the spring support 11 and the convex part 133 via the sponge 142 by the repulsive force of the spring material 150 and presses the convex part 133. That is, the sealing assisting part 132 is pressed against the screen receiving part 131 by the table 10 via the elastic body. On the contrary, the convex portion is pressed against the sealing assisting portion 132 through the sponge 142.

The table 10 moves up and down to adjust the position according to the size of the substrate to be printed. However, even if the table 10 moves, the expansion and contraction larger than the movement amount of the table 10 so that the sealing assisting part 132 presses the convex part 133. A spring material 150 having an amount is used.
Therefore, even if the table 10 moves between the convex part 133 and the sealing assistance part 132, it is sealed (sealed).

The upper surface of the screen receiving portion 131 is fixed to the screen frame 5 of the screen plate making 100 so as to press the sponge 141 with the sponge 141 interposed therebetween. The sponge 141 is formed in a substantially square frame shape according to the shape in which the screen receiving portion 131 and the screen frame 5 are in contact with each other.
Therefore, the screen receiving part 131 and the screen frame 5 are sealed (sealed).
Therefore, the screen sealing portion substantially seals the space between the screen plate making 100 and the table 10.

  In FIG. 2, reference numeral 199 denotes a main body of the screen printing machine. Reference numeral 61 denotes a screen plate making attachment for fixing the screen plate making to the main body 199. While the squeegee is printing, the screen plate making is fixed to the main body by the screen plate making attachment 61 and is not tilted or lifted.

  The tubes 91 and 93 are disposed on the table side of the screen plate of the screen plate fixed to the main body by the screen plate mounting portion 61. That is, it is located between the table 10 and the back surface of the screen plate 1 and is disposed on the surface of the table 10.

The material of the tubes 91 and 93 is rubber. Reinforced rubber or silicon rubber can be used.
In a state where air is not sent into the tubes 91 and 93, the tubes 91 and 93 maintain a collapsed state. In a state where the air is fed into the tubes 91 and 93 by the fluid control unit 96, the tubes 91 and 93 have a circular swell and a substantially cylindrical shape.

The fluid control unit 96 sends air to the tubes 91 and 93 using L-shaped pipes 94 and 95. The fluid control unit 96 sends air to one of the pair of left and right pipes 94 and 95.
The tube 91 pulls the screen plate away from the work when the squeegee prints in the direction of arrow A. The fluid control unit 96 controls the pressure of the fluid inside the tube 91 to change the shape of the tube 91 and pulls the screen plate away from the work during printing in the direction of arrow A on the work placed on the table by the squeegee. .

When the squeegee prints in the arrow B direction, the tube 93 pulls the screen plate away from the work.
The fluid control unit 96 controls the pressure of the fluid inside the tube 93 to change the shape of the tube 93 and pull the screen plate away from the work during printing in the direction of arrow B on the work placed on the table by the squeegee. .

FIG. 3 is a cross-sectional view of the table portion of the screen printing machine according to the first embodiment.
In FIG. 3, a compressed air supply unit 122 is a supply hole that supplies gas toward the screen plate making 100. FIG. 3 shows the compressed air supply unit 122 which is also shown in FIG. 2 which is not shown in FIG.

  The table 10 is the same as that shown in FIGS. The screen plate making 100 is the same as that shown in FIG. The compressed air supply unit 122 is provided at the lower part of the table 10, communicates with the opening 121 on the upper surface of the table 10 in FIG. 1, and supplies gas toward the screen plate making 100. In FIG. 3, two cross sections appear in the eight openings 121.

As shown in FIG. 3, it is desirable that the tubes 91 and 93 be inside the opening 121 of the compressed air supply unit 122.
FIG. 3 shows a state in which air is not sent into the tubes 91 and 93, and the tubes 91 and 93 are in a collapsed state. In this state, the tubes 91 and 93 are not in contact with the back surface of the screen plate 1. That is, in a state where air is not fed into the tubes 91 and 93, the tubes 91 and 93 are less than the gap provided between the screen plate making and the work to be printed. For this reason, the presence of the tubes 91 and 93 does not interfere with the work of attaching the screen plate making to the screen plate making attachment portion 61.

FIG. 4 is a diagram showing a state at the time of printing in the first embodiment in which the screen sealing portion is omitted.
In FIG. 4, 3 is a squeegee, 8 is ink, and 6 is a work. The opening 121 is the same as in FIG. The screen plate 1, the screen frame 5, and the screen plate making 100 are the same as those in FIG. The compressed air supply unit 122 is the same as that in FIG. The table 10 is the same as that shown in FIGS.

  In FIG. 4, the work 6 is printed by moving the ink 8 so as to push the ink 8 onto the work 6 while pressing the work 6.

  In FIG. 4, as described in the description of FIG. 1, the opening 121 is located at a position where the suction port 123 is not in contact with the workpiece 6 when the suction port 123 is fixed to the table by sucking the workpiece 6 as a printing object, that is, the table 10. Formed on the outside of the work 6 disposed in The opening 121 supplies the gas supplied from the compressed air supply unit 122 toward the screen plate making 100.

  If the atmospheric pressure in the lower part of the screen plate 1 is higher than the atmospheric pressure in the upper part of the screen plate 1 due to the supplied gas, that is, the pressure of the atmosphere that the screen plate 100 has on the opposite side of the table disposed oppositely. If the pressure is higher than that, even if the gap between the screen plate 1 and the work 6 is small, printing can be performed while the screen plate 1 and the work 6 are easily separated by the squeegee 3 during printing.

  Here, it is desirable that the gas to be supplied is either air or nitrogen. The air is preferably clean air so as not to contaminate the workpiece 6. In order not to contaminate the work 6, argon or the like may be used in the same manner as nitrogen which is an inert gas.

  The operation of the fluid control unit 96 when printing a work by reciprocating movement of the squeegee is as follows.

1. Operation of Fluid Control Unit 96 During Forward Movement of Squeegee The dynamic fluid control unit 96 sends air into the tube 91 in synchronization with the forward movement of the squeegee. Air is not put into the tube 93. At the start of printing on the workpiece, the pressure is gradually increased and the pressure is gradually increased to introduce air into the tube 91. Increase the pressure at the end of printing on the workpiece. This helps to release the plate. After printing on the workpiece, the fluid control unit 96 removes air from the tube 91.

2. Operation of Fluid Control Unit 96 During Return Movement of Squeegee The dynamic fluid control unit 96 sends air into the tube 93 in synchronization with the return path movement of the squeegee. The tube 91 is not filled with air. The pressure is gradually increased from the start of printing on the work, and the pressure is gradually increased to introduce air into the tube 93. The pressure is increased from the start of printing on the workpiece, and the pressure on the tube 93 is kept constant at the midpoint of the workpiece printing. After the intermediate point, the plate can be separated only by the gas pressure from the compressed air supply unit 122 to the opening 121. Note that the pressure may be highest at the end of printing on the workpiece.
This helps to release the plate. After printing on the workpiece, the fluid control unit 96 removes air from the tube 93.

  If the entire plate can be separated by injecting gas into the gap between the table 10 and the screen plate 1 when the separation of the printing portion is started, the movement is started when the initial separation is started. It is desirable that the fluid control unit 96 does not allow air to enter the tube 91 (or removes air). This is because unnecessary pressurization of the screen plate 1 can be avoided, leading to maintenance of the tension of the screen plate 1 and a longer life.

  According to this embodiment, since the tubes 91 and 93 are used, the following effects are obtained.

1. Since the tubes 91 and 93 are elastic bodies and are inflated by air, they come into contact with the screen plate without corners and softly. For this reason, the back surface of the screen plate is not damaged.

2. By adjusting the air pressure of the dynamic fluid control unit 96, the amount by which the screen plate is lifted can be changed. For this reason, it is possible to flexibly set an appropriate lifting amount of the screen plate according to the size and tension of the screen plate.

3. Since only the tubes 91 and 93 are inflated with air, the structure of the plate separating mechanism is simple. Further, even when the tubes 91 and 93 are worn and deformed due to aging, the tubes 91 and 93 can be easily replaced.
4). As a result, the screen tension can be maintained and high accuracy and long life can be achieved.

Embodiment 2. FIG.
In this embodiment, points different from the first embodiment will be described. Others are the same as in the first embodiment.
FIG. 5 is a top view of the table portion of the screen printing machine according to the second embodiment.
In FIG. 5, 81 and 83 are tubes. 84, 85, 87, 88 are pipes that send air to the tubes 81, 83. A fluid control unit 86 sends air to the tubes 81 and 83 using the pipes 84 and 85. Reference numeral 89 denotes a fluid control unit that sends air to the tubes 81 and 83 using the pipes 87 and 88. The fluid control units 86 and 89 may send other gas or liquid such as water or other fluid instead of air.

FIG. 6 is a cross-sectional view of the table portion of the screen printing machine according to the second embodiment.
In FIG. 6, the tubes 81 and 83 are kept in a collapsed state when no air is fed into the tubes 81 and 83. In a state where the air is fed into the tubes 81 and 83 by the fluid control units 86 and 89, the tubes 81 and 83 have a circular swelled cross section and are substantially cylindrical.

The fluid control unit 86 sends air to the tubes 81 and 83 using the L-shaped pipes 84 and 85.
When the squeegee prints in the direction of arrow C, the fluid control unit 86 sends air to both of the pair of pipes 84 and 85 at the same time.
When the squeegee prints in the direction of arrow D, the fluid control unit 89 sends air to both of the pair of pipes 84 and 85 at the same time.

FIG. 7 is a cross-sectional view of the table portion of the screen printing machine according to the second embodiment.
FIG. 8 is a partial plan view of the table portion of the screen printing machine of FIG.
7 and 8, reference numerals 31 and 33 denote pressing portions that push the tubes 81 and 83 through the screen plate 1. The pressing portions 31 and 33 move together with the squeegee 3 after the squeegee 3.
Note that when the squeegee moves back, the position of the pressing portions 31 and 33 is changed by a mechanism (not shown), and the pressing portions 31 and 33 move together with the squeegee 3 after the squeegee 3.
Or the press parts 31 and 33 and the squeegee 3 may be in a horizontal line.

  The pressing parts 31 and 33 are for introducing the air sent from the fluid control part 86 to the tubes 81 and 83 to the tubes 81 and 83 up to the area printed by the squeegee 3. 7 and 8, the pressure expansion unit is expanded by the air sent from the fluid control unit 86. On the other hand, 35 is a decompression crushing unit to which the air sent from the fluid control unit 86 has not been given yet.

  Further, the fluid control unit 89 can promote the collapse of the decompression crushing portion 35 of the tubes 81 and 83 by sucking air from the tubes 81 and 83.

  The operation of the fluid control unit 86 when printing a work by reciprocating movement of the squeegee is as follows.

1. Operation of Fluid Control Unit 86 During Forward Movement of Squeegee The dynamic fluid control unit 86 sends air to both the tubes 81 and 83 in synchronization with the forward movement of the squeegee. At the start of printing on the workpiece, the pressure is gradually increased and the pressure is gradually increased to introduce air into the tubes 81 and 83. Increase the pressure at the end of printing on the workpiece. This helps to release the plate from the left and right.
Further, the fluid control unit 89 can promote the collapse of the decompression crushing portion 35 of the tubes 81 and 83 by sucking air from the tubes 81 and 83.
After the printing on the workpiece is finished, the fluid control unit 86 removes air from the tubes 81 and 83.

2. Operation of Fluid Control Unit 86 During Return Movement of Squeegee The dynamic fluid control unit 86 sends air to both the tubes 81 and 83 in synchronization with the return path movement of the squeegee. At the start of printing on the workpiece, the pressure is gradually increased and the pressure is gradually increased to introduce air into the tubes 81 and 83. Increase the pressure at the end of printing on the workpiece. This helps to release the plate.
Further, the fluid control unit 86 can promote the collapse of the decompression crushing portion 35 of the tubes 81 and 83 by sucking air from the tubes 81 and 83.
After the printing on the workpiece is finished, the fluid control unit 86 removes air from the tubes 81 and 83.

If the configuration of the second embodiment is adapted to that of the first embodiment, a plate separation effect is further obtained.
According to this embodiment, since the tubes 81 and 83 are used in accordance with the first embodiment, the following operational effects are obtained.
1. Since the left and right tubes 81 and 83 are used together with the front and rear tubes 91 and 93, the plate separation effect is improved.
2. Air can be introduced only into the printed portions of the left and right tubes 81 and 83 by the pressing portions 31 and 33, and the area during printing is not lifted and printing is not hindered.

Embodiment 3 FIG.
As shown in FIG. 9, the tubes 91 and 93 may be provided in the screen receiving portion 131. Further, the tubes 81 and 83 may be provided in the screen receiver 131.
Further, only one of the tubes 91 and 93 may be provided. Further, only one of the tubes 81 and 83 may be provided.

Embodiment 4 FIG.
As shown in FIG. 10, the tubes 91 and 93 may be provided in the recess of the table 10. When the tubes 91 and 93 are provided in the recesses of the table 10, the large-diameter tubes 91 and 93 can be provided without worrying about the gap between the table 10 and the screen plate 1.
Further, the tubes 81 and 83 may be provided in the recess of the table 10.

Embodiment 5 FIG.
As shown in FIGS. 11 and 12, a hole 79 for ejecting air may be provided in the tubes 91 and 93. The holes 79 are provided in a row at locations (upper surfaces) of the tubes 91 and 93 that are in contact with the screen plate 1. In this way, the air in the tubes 91 and 93 flows out of the hole 79, and the back surface of the screen plate 1 can eliminate physical contact with the tubes 91 and 93. Alternatively, it can be reduced.
Moreover, you may provide the hole 79 which ejects air to the tubes 81 and 83. FIG.

  As shown in FIG. 13, a long rubber 191 having a U-shaped cross section may be attached to the table 10 so as to be pressurized and inflated.

  Further, as shown in FIG. 14, both ends of the long rubber plate may be bonded to the table 10 so that the center is expanded.

  In addition, as shown in FIG. 15, the tube 91 may be embedded in the table 10 obliquely and inflated. Further, a hole 79 may be provided to send out air to a closed space surrounded by the table 10, the tube 91, and the screen plate 1.

Embodiment 6 FIG.
In the above-described embodiment, a case has been described in which air is positively put into a tube crushed under atmospheric pressure to release the plate. That is, first, the case where the pressurization is set to zero, printing is started, and positive pressurization is performed after the start of printing has been described.
However, the fluid control unit 96 sucks air from the tube that has been swollen under atmospheric pressure to crush the tube, starts printing, and stops the suction of the fluid control unit 96 after starting printing. Thus, the tube may be in its original swollen shape. That is, negative pressurization (suction) may be performed and the pressurization may be zero.
Moreover, you may send in the pressurized air after that in order to ensure swelling. That is, negative pressurization (suction) may be performed, the pressurization may be set to zero, and positive pressurization may be performed.

  FIG. 16 is a diagram showing a state that may occur during printing by the screen printer having the structure of the first embodiment. When gas is caused to flow into the gap between the table 10 and the screen plate 1, the gas may accumulate in a portion where the pressure is weak. For this reason, the central part of the screen plate 1 may swell. Then, there is a fear that the printed part does not release the plate.

  The present invention has an effect of preventing a state (state shown in FIG. 13) that may occur during printing by the screen printer having the structure of the first embodiment. That is, by supplying air to the tube simultaneously with the start of printing and starting the plate separation, it is possible to reliably perform the plate separation of the initial printed portion. Once the plate separation is started, the plate separation is continuously performed by flowing a gas into the gap between the table 10 and the screen plate 1.

In this way, if the separation of the initially printed portion is reliably performed by the tube, and the separation of the plate is continuously performed by the inflow of gas into the gap between the table 10 and the screen plate 1, the table 10 and the screen The gap with the plate 1 can be further reduced.
When the plate separation is surely executed only by the tension of the screen plate 1, it is necessary to make a large gap between the table 10 and the screen plate 1.

  However, in this embodiment, since both the plate separation by the tube and the plate separation by the inflow of gas into the gap are executed, compared with the case where the plate separation by the tube and the plate separation by the inflow of gas into the gap are not executed, The gap between the table 10 and the screen plate 1 can be reduced.

  In addition, when using plate separation by gas inflow into the gap in addition to plate separation by tension of the screen plate 1, the gap can be reduced, but initial plate separation failure that may occur when the gap is reduced, Since it can be eliminated by separating the plate with a tube, the gap can be made smaller than before.

3 is a top view of a table unit of the screen printing machine in Embodiment 1. FIG. 3 is a cross-sectional view of a table portion of the screen printing machine in Embodiment 1. 3 is a cross-sectional view of a table portion of the screen printing machine in Embodiment 1. FIG. It is a figure showing the state at the time of printing of Embodiment 1 which abbreviate | omitted the screen sealing part. FIG. 6 is a top view of a table unit of a screen printing machine in a second embodiment. It is sectional drawing of the table part of the screen printer in Embodiment 2. FIG. It is sectional drawing of the table part of the screen printer in Embodiment 2. FIG. FIG. 8 is a partial plan view of FIG. 7. 6 is a cross-sectional view of a table portion of a screen printing machine according to Embodiment 3. FIG. FIG. 6 is a cross-sectional view of a table portion of a screen printing machine in a fourth embodiment. FIG. 10 is a top view of a table unit of a screen printing machine according to Embodiment 5. FIG. 10 is a cross-sectional view of a tube in a fifth embodiment. It is another example of the tube structure in Embodiment 5. It is another example of the tube structure in Embodiment 5. It is another example of the tube structure in Embodiment 5. It is a figure explaining usability.

Explanation of symbols

  1 screen plate, 2 scraper, 3 squeegee, 4 squeegee unit, 5 screen frame, 6 work, 8 ink, 10 table, 11 spring support, 31, 33 pressing part, 61 screen plate making attachment part, 79 holes, 81, 83, 91, 93 Tube, 84, 85, 87, 88, 94, 95 Pipe, 86, 89, 96 Fluid control unit, 100 screen plate making, 121 Opening part, 122 Compressed air supply part, 123 Suction port, 131 Screen receiving part, 199 body.

Claims (6)

In a screen printing machine that performs screen printing on a workpiece using a screen plate making and a squeegee having a screen plate and a screen frame,
The body,
A screen plate making attachment for fixing the screen plate making to the main body;
A table arranged opposite to the screen plate making, and a work placement table;
A tube arranged on the table side of the screen plate of the screen plate making fixed to the main body by the screen plate making attachment;
A fluid control unit that controls the pressure of fluid inside the tube to change the shape of the tube during printing on the work placed on the table by the squeegee, and pulls the screen plate away from the work. Printer.   2. The screen printing machine according to claim 1, wherein the fluid control unit controls a supply amount of the fluid to be supplied based on a printing position of the squeegee.   2. The screen printing machine according to claim 1, wherein the tube is disposed so as to extend to an end of a table on which a squeegee starts printing.   2. The screen printing machine according to claim 1, wherein the tubes are arranged so as to extend to the end portions of the tables on both sides of the printing area of the squeegee.   5. The screen printing machine according to claim 4, further comprising a pressing unit that presses the tube while moving as the squeegee moves. The screen printing machine further includes:
A screen sealing portion that substantially seals the space between the screen plate and the table;
A screen printing machine comprising: a supply unit that supplies gas to a substantially sealed space between the screen plate and the table.

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