KR20030088759A - screen printer clearing apparatus - Google Patents

Abstract

PURPOSE: A cleaning device of a screen printer having an electronic brake and a driving method thereof are provided to improve the performance of the cleaning device by performing a cleaning process after straining a small piece of cloth and a paper between rollers. CONSTITUTION: A cleaning device of a screen printer having an electronic brake includes two rollers(5a,5b), an air injection pipe(9), a cleaning push stick(11), and an injection nozzle(10). The rollers(5a,5b) are combined with a roller drive motor(2) and an electronic brake(19). The rollers(5a,5b) are combined with the brackets(12a,12b). The air injection pipe(9) is fixed to the brackets(12a,12b). The injection pipe(9) is fixed to the brackets(12a,12b) and connected to an air injection pump. The cleaning push stick(11) is fixed to the brackets(12a,12b) and shifted by an air pressure cylinder(15). The injection nozzle(10) is used for injecting the solvent to a paper or a small piece of cloth between the rollers(5a,5b). The controller is used for controlling the roller drive motor(2), the electronic brake(19), the air injection pump, a transfer drive motor, a chemical valve(8), and a shift motor.

Description

Cleaning apparatus for screen printer with electromagnetic brake and driving method thereof {screen printer clearing apparatus}

The present invention relates to a cleaning device for a screen printer having an electromagnetic brake and a driving method thereof, and more particularly, a cloth in which a cloth or paper spread between two rollers is pulled by an electronic brake and the cloth is moved by a spraying method. The present invention relates to a cleaning device for a screen printer having an electronic brake and a driving method thereof, by which a cleaning liquid is applied to paper or paper to wash the coating liquid on the bottom of a mask.

Conventional screen printers include a conveyor for moving a material (semiconductor) for applying a solvent (coating solution) and a squeeze for allowing a solvent placed on the surface of the mask to be injected into the space of the opening of the mask while moving in the front-rear direction. It consists of a camera that can check the position of the material and mask while moving back, forth, left and right, a cleaner that can wipe the opening of the mask, and a table that moves the material to the bottom of the mask.

The screen printer puts the material transported by the conveyor on the table and checks the position of the recognition mark on the material and the position of the recognition mark on the mask with a camera and adjusts the position of the table to adjust the position of the material and the mask. The space is matched exactly. Then, the table is raised to bring the material into close contact with the mask, the squeeze is lowered and then moved back and forth to apply the coating liquid falling into the opening of the mask.

Such a screen printer is provided with a cleaning device for cleaning a mask, and the cleaning device is provided with two rollers for feeding and winding a cloth or paper. In addition, the cleaning liquid such as solvent contained in the cleaning liquid container is configured to continuously supply the cleaning to the cloth or paper through the pipe.

In addition, the driving motor is coupled to the roller for winding the cloth or paper of the two rollers, it is possible to wash the mask with a new cloth or paper at all times by washing the bottom of the mask and winding the cloth or paper by a certain length. However, there is no separate configuration for pulling the cloth or paper stretched between the feeding roller and the winding roller tightly, and there is a problem such that the cloth or paper wound on the feeding roller is unwound and the cleaning effect is inferior.

The present invention for solving the above-described drawbacks is to install a separate electronic brake on the cloth or paper supply rollers to limit the rotation of the cloth or paper supply roller only while the cloth or paper is wound so that the cloth or paper Provides a cleaning device for a screen printer with an electronic brake and a driving method thereof, which can prevent unnecessarily loosening and prevent wrinkles, and improve the cleaning performance of the cleaner by washing the bottom of the mask in a state where the cloth or paper is stretched tightly. It aims to do it.

1 is a perspective view showing a washing apparatus for a screen printer having an electromagnetic brake according to the present invention.

FIG. 2 is an enlarged perspective view showing the cleaner having the electromagnetic brake in FIG.

3 is a cross-sectional view of the cleaner having the electromagnetic brake of FIG. 2.

4 is a configuration diagram for controlling a washing apparatus of a screen printer having an electromagnetic brake according to the present invention.

5A and 5B are flowcharts for explaining the operation of the cleaning device of the screen printer with the electromagnetic brake shown in FIG.

※ Explanation of code about main part of drawing ※

1: cleaner block 2,17,200: drive motor

3: belt 4: guide rail

5a, 5b: roller 6: feed fixture

7a, 7b: infrared sensor 8: valve for chemical liquid

9: air injection pipe 10: cleaning liquid injection nozzle

11 cleaning rod 11a: guide groove

12a, 12b: bracket 13: controller

14 air injection pump 15 pneumatic cylinder

16a, 16b: Poly18: washing liquid pressurized pump

19: electronic brake 100: cleaner

300: base 500: mask

In the cleaning apparatus for a screen printer with an electronic brake according to the present invention for achieving the above object, a table mounted with a material is mounted on a tray of a table driving mechanism equipped with X, Y, and Z axis driving motors. Of a screen printer having two squeezes mounted on a guide rail which is moved up, down, left, right, right, left, and right on the X, Y axis guide rail, and is moved up and down by a pneumatic cylinder. In the washing apparatus, a cloth or paper for cleaning the bottom of the mask is supplied and wound, and a roller driving motor is connected to the supply roller, and an electronic brake is connected to the winding roller, respectively, and fixed to two brackets standing vertically. Two rollers which are rotatably coupled at intervals, and between the feeding roller and the winding roller A bracket which is fixed to the bracket and is fixed to the bracket so as to be located between the air jet pipe connected to the air jet pump and the supply roller for supplying the cloth or paper and the air jet pipe. It is mounted on a washing rod moving up and down by a fixed pneumatic cylinder, and a transfer holder reciprocating in the longitudinal direction of the feeding roller on a guide rail provided in front of the feeding roller, and opened and closed under the control of a controller. Cleaning liquid spray nozzle for spraying the cleaning liquid supplied through the chemical liquid valve to be supplied and wound between the supply roller and the winding roller on a cloth or paper, the driving motor for the roller and the electromagnetic brake, air injection pump, transfer Move the drive motor, the chemical valve and the cleaner containing them back and forth It characterized in that it comprises a controller which controls the driving of the motor movement.

In the cleaning apparatus for a screen printer having an electromagnetic brake according to the present invention, the electromagnetic brake is normally kept 'on' and 'off' only while a cloth or paper wound on the feeding roller is wound on the winding roller. It is desirable to maintain the state.

In the method of driving a cleaning device for a screen printer with an electronic brake according to the present invention, when an operation mode for cleaning is set according to an external input or an operation of the screen printer, the electronic brake is switched to an 'on' state and the cleaner is set to a starting position. And a first step of raising the cleaner block so that the cleaning rod contacts the bottom of the mask, and a second step of removing the coating liquid remaining on the bottom of the mask with the cleaning rod by moving the cleaner to the end position after raising the cleaner block. And a third step of moving the cleaner to an end position and then moving the cleaner to a start position while injecting air through an air injection pipe by operating an air injection pump; A fourth step of lowering the block and moving the cleaner to the standby position; After switching the electromagnetic brake to the 'off' state, the fifth step of winding the cloth or paper wound on the supply roller to the winding roller, and winding the cloth or paper of a certain length on the winding roller, then turning on the electromagnetic brake 'on' And a sixth step of switching to a state.

In the method of driving a cleaning device for a screen printer with an electromagnetic brake according to the present invention, the electromagnetic brake is normally maintained in an 'on' state only while a cloth or paper wound on a feeding roller is wound on a winding roller. It is desirable to keep the 'off' state.

Hereinafter, the present invention will be described in detail.

1 to 4 show a cleaning device for a screen printer having an electronic brake according to the present invention, and in particular, a mask 500 fixed to the base 300 by being installed on the bottom of the mask 500 of the screen printer, that is, on the lower base. ) Shows a cleaner (100) having an electromagnetic brake (19) for removing (washing) the coating liquid on the substrate, and washing the bottom surface of the mask (500) while moving horizontally back and forth under rotational force from the driving motor (200). .

The supply roller 5a and the winding roller 5b, which can supply and wind a cloth or paper for cleaning the coating liquid on the bottom surface of the mask 500 having an opening in the center, stand vertically at regular intervals. It is rotatably coupled to two brackets 12a and 12b. Of course, the rotational force is supplied to the winding roller 5b by the control of the controller 13 to the winding roller 5b in which a cloth or paper is wound by a predetermined length among the feeding roller 5a and the winding roller 5b. Roller driving motor 2 is coupled, and the supply roller 5a for supplying cloth or paper is controlled by the controller 13, and is normally kept in an 'on' state, while the driving motor for roller 2 The electromagnetic brake 19, which switches to the 'off' state only during the operation, is engaged.

In addition, the brackets 12a and 12b are fixedly installed such that the air injection pipe 9 connected to the air injection pump 14 is located between the supply roller 5a and the winding roller 5b. (12b) is fixed to the bottom of the bracket (12c) is coupled to move up and down by the pneumatic cylinder (15), the washing rod (11) is supplied to the pneumatic cylinder (15) and the air injection pipe (9) It is fixed so that it can move up and down between the rollers 5a. In front of the cleaning rod 11, a guide groove 11a for guiding the supply of a cloth or paper supplied from the supply roller 5a to the winding roller 5b is provided in the longitudinal direction of the supply roller 5a. Incision Hereinafter, the air injection pipe 9, the washing stick 11, and the guide groove 11a which move up and down by the pneumatic cylinder 15 are demonstrated with the cleaner block 1. As shown in FIG.

In the drawing, the front of the cleaner 100, that is, the front of the supply roller 5a is provided with a guide rail 4 for the transport of the transfer fixing body 6 on which the cleaning liquid jet nozzle 10 is mounted horizontally. On both sides of the lower part of the guide rail 4, two pulleys 16a and 16b are provided, which are connected to each other by a belt 3 and transmit power. One poly 16a of the two polys 16a and 16b is connected to a transfer drive motor 17 for providing rotational force for rotating the polys 16a and 16b.

The belt 3 wound around the two pulleys 16a and 16b is fixed to the transfer holder 6 reciprocating on the guide rail 4, so that the rotational force of the transfer drive motor 17 The cleaning liquid injection nozzle 10 is sprayed on the cloth or paper wound on the two rollers 5a and 5b by the 16a and the belt 3, and is transferred to the transporting fixture 6 so as to spray the cleaning liquid. Can be.

In addition, at a predetermined position of the guide rail (4) detects the transfer fixed body (6) mounted with the washing liquid injection nozzle 10 moving on the guide rail (4), and thus detected of the washing liquid injection nozzle (10) Two infrared sensors 7a and 7b are provided which provide the position information to the controller 13 which controls the overall operation of the screen printer including the cleaner 100.

Here, the controller 13 for controlling the overall operation of the screen printer including the cleaner 100 according to the external input or the operation of the screen printer including the infrared sensors 7a and 7b is washed by the infrared sensor 7b. From the position where the spray nozzle 10 is detected to the position where the cleaning liquid spray nozzle 10 is detected by the infrared sensor 7a, that is, while the cleaning liquid spray nozzle 10 moves from the spray start position to the spray end position, The opening and closing operation of the chemical liquid valve 8 connected between the washing liquid pressurizing pump 18 and the washing liquid injection nozzle 10 for pumping the washing liquid such as solvent stored in the washing liquid tank so as to spray the washing liquid on the paper can be controlled. .

The operation of the cleaning device of the screen printer will be described with reference to Figs. 5A and 5B.

In order to block the rotation of the supply roller 5a, the electronic brake 19 is kept in an 'ON' state (S11), the screen printer performs a normal printer process, and the external input while the cleaner 100 is in the standby state. Or, when the washing mode is set by the operation of the printer, the drive motor 200 is driven by the control of the controller 13 to move the cleaner 100 to the start position (S12).

Then, the controller 13 drives the transfer drive motor 17 so that the transfer fixture 6, on which the washing liquid injection nozzle 10 is mounted, rides the guide rails 4 and the two rollers 5a and 5b. Move on a piece of cloth or paper wrapped around the cloth.

The controller 13 analyzes the sensing signals provided from the two infrared sensors 7a and 7b while the transport fixture 6 moves on the guide rails 4, that is, the transport fixture 6, ie It is confirmed to where the cleaning injection nozzle 10 has moved.

As a result, when it is determined that the washing spray nozzle 10 has moved to the spray starting position, the controller 13 continuously moves the transport fixing body 6 and simultaneously operates the washing liquid pressurizing pump 18. Open the chemical valve (8) so that the washing liquid stored in the washing liquid tank is sprayed on a cloth or paper through the washing liquid injection nozzle (10).

Subsequently, the controller 13 continuously moves the transfer moving body 6 and analyzes the sensing signals provided from the two infrared sensors 7a and 7b while spraying the cleaning liquid through the cleaning liquid injection nozzle 10 for transport. It is checked whether the stationary body 6, that is, the cleaning jet nozzle 10, has moved to the injection end position.

When the cleaning spray nozzle 10 passes the injection end position, the controller 13 stops the washing liquid pressurizing pump 18 and closes the chemical liquid valve 8 so that the washing liquid is no longer sprayed. In addition, the controller 13 drives the transfer drive motor 17 in the opposite direction to the present so that the transfer moving body 6, that is, the washing liquid injection nozzle 10, is returned to the starting position by the guide rail 4. .

Next, the controller 13 raises the pneumatic cylinder 15 so that the cleaning rod 11 contacts the bottom surface of the mask 500 (S13) and simultaneously drives the driving motor 200 to clean the cleaner 100. ) To clean the bottom of the mask 500 while moving to the end position (S14). In addition, the controller 13 drives the air injection pump 14 while the cleaner 100 moves to the end position (S15) to the bottom surface of the mask 500 by the air injected from the air injection pipe 9. Let the cleaning solution fly away.

After moving the cleaner 100 to the end position by driving the drive motor 200, the controller 13 rotates the drive motor 200 in the reverse direction to move the cleaner 100 to the start position (S16). After moving the cleaner 100 to the start position, the controller 13 lowers the pneumatic cylinder 15 so that the cleaner block 1 including the cleaning rod 11 is lowered (S17). After lowering the cleaner block 1, the controller 13 drives the driving motor 200 again to further move the cleaner 100 to the standby position (S18).

After the cleaning process is completed, the controller 13 switches the electromagnetic brake 19 to an 'off' state (S19), and drives a driving motor 2 to wash a cloth or paper used to wash the bottom of the mask. A new cloth or paper wound around the roller 5b and wound around the supply roller 5a is newly supplied (S20).

After the cloth or paper is wound on the winding roller 5b for a predetermined length, the controller 13 stops the driving motor 2 for the roller (S21) so that the cloth or paper is no longer attached to the winding roller 5b. At the same time, the electronic brake 19 is switched to the 'on' state without being detected (S22) so that the cloth or paper wound on the supply roller 5a is no longer loosened.

Therefore, according to the present invention, by attaching the electromagnetic brake to the roller for supplying the cloth or paper, the roller for supplying the cloth or paper can be rotated only while the cloth or paper is wound, so that the cloth or paper is unnecessary. It can be prevented from being wrinkled, and the cleaning performance of the cleaner can be improved by washing the coating liquid on the bottom of the mask while the cloth or paper is stretched out.

Although the present invention has been described in detail only with respect to the specific embodiments described, it will be apparent to those skilled in the art that various modifications and variations are possible within the spirit of the present invention, and such modifications and modifications belong to the appended claims. .

Claims (4)

The table loaded with materials is seated on the tray of the table driving mechanism equipped with X, Y and Z axis drive motors and moved up, down, left and right on the bottom of the mask. In the cleaning apparatus of a screen printer having an electromagnetic brake mounted with two squeeze on the guide rail moving up and down by a cylinder, The cloth or paper for cleaning the bottom of the mask is supplied and wound. The roller driving motor is connected to the supply roller, and the electromagnetic brake is coupled to the winding roller, and the brackets are rotatable with two brackets standing vertically. Two rollers joined together; An air injection pipe fixed to the bracket and connected to an air injection pump so as to be between the supply roller and the winding roller; A washing rod that is vertically moved by a pneumatic cylinder fixed to the bracket and fixed to the bracket so as to be between the feeding roller for supplying the cloth or paper and the air injection pipe; The supply roller and the cleaning liquid is mounted on the transport fixed body reciprocating in the longitudinal direction of the supply roller by a guide rail installed in front of the supply roller and supplied through the chemical liquid valve opened and closed by a controller. Washing liquid spray nozzles for spraying on a cloth or paper that is supplied and wound between winding rollers; And A controller for controlling the driving of the roller drive motor, the electromagnetic brake, the air injection pump, the transfer drive motor, the chemical valve and the moving motor for moving the cleaner including the cleaner back and forth; Washing apparatus of the screen printer having an electronic brake, characterized in that it comprises a. The method of claim 1, The electromagnetic brake is normally maintained in the 'on' state, but the screen printer having the electromagnetic brake, characterized in that only while the cloth or paper wound on the supply roller is wound on the winding roller Washing equipment. When the operation mode for cleaning is set according to the external input or the operation of the screen printer, the first step is to switch the electromagnetic brake to the 'on' state, raise the cleaner block to the start position, and raise the cleaner block to the bottom of the mask. ; A second step of removing the coating liquid remaining on the bottom surface of the mask with a cleaning stirrer by raising the cleaner block and moving the cleaner to an end position; A third step of moving the cleaner to a start position after moving the cleaner to an end position while injecting air through an air injection pipe by operation of an air injection pump; A fourth step of moving the cleaner to a starting position and then lowering a cleaner block and moving the cleaner to a standby position; A fifth step of moving the cleaner to a standby position, switching the electromagnetic brake to an 'off' state, and winding a cloth or paper wound on a feeding roller to a winding roller; And A sixth step of switching the electromagnetic brake to an 'on' state after winding a cloth or paper of a predetermined length on the winding roller; Method of driving a cleaning device for a screen printer having an electronic brake, characterized in that it comprises a. The method of claim 3, The electromagnetic brake is normally maintained in the 'on' state, but the screen printer having the electromagnetic brake, characterized in that only while the cloth or paper wound on the supply roller is wound on the winding roller How to operate the washing device.