JP2010137429A - Screen printing machine and screen printing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a screen printing machine in which problems does not occur in cleaning operation or attraction of a substrate when sharedly using a cleaning blower and a vacuum pump. <P>SOLUTION: The screening printing machine has a means for vacuum-chucking and positioning the substrate, a means for removing solder remaining in a screen mask by sucking the same, a plurality of screen printing stage respectively having a means for controlling printing movement, a vacuum pump for chucking the substrate sharedly used for all of the screen printing stage, a cleaning blower for sucking the solder sharedly used for all of the screen printing stage, and a means for changing the vacuum pump and the cleaning blower to operation condition and non-operation condition. In the screen printing machine, the blower is not changed in the non-operation condition in the case where the blower is used in one screen printing stage even in the case non-operation condition of the blower is required from the other screen printing stage side. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to screen printing for printing solder on a substrate using a screen mask.

Many screen printing apparatuses are equipped with a cleaning device for removing solder remaining on the screen mask. The cleaning device disclosed in Patent Document 1 is connected to a cleaning blower that supplies a negative pressure for sucking and removing solder from a screen mask. Further, the screen printing apparatus is provided with a vacuum pump for supplying a negative pressure to the substrate support device, and is used for adsorbing the substrate during printing and fixing it to the substrate support device.
JP 2008-37008 A

  The screen printing apparatus can print on a plurality of substrates by including a plurality of screen masks, a substrate support device, a cleaning device, and the like. From the viewpoint of production efficiency, it is ideal to arrange a dedicated vacuum pump and cleaning blower for each substrate support device and cleaning device, but from the viewpoint of cost effectiveness and area productivity, a plurality of substrate support devices It is desirable to share one vacuum pump and cleaning blower in the cleaning device. In the case of such sharing, if the operation of the cleaning blower is stopped just after the cleaning of the screen mask is completed as in the case of exclusive use, the negative pressure is not supplied to the other cleaning devices, and the cleaning operation is forced to be interrupted. There is a problem. The same applies to the vacuum pump, and there is a problem that the substrate is likely to be displaced during printing if the negative pressure is not supplied to the other substrate support devices.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a screen printing apparatus that does not interfere with cleaning work and substrate adsorption when a cleaning blower and a vacuum pump are shared.

  The screen printing apparatus according to the present invention includes a plurality of screen printing stages each provided with means for vacuum-sucking and positioning the substrate, means for sucking and removing the solder remaining on the screen mask, and means for controlling the printing operation. A vacuum pump for suctioning a substrate shared by all screen printing stages, a cleaning blower for suctioning solder shared by all screen printing stages, and a means for switching the vacuum pump and the cleaning blower to be activated or deactivated. Even if the substrate suction or the solder suction is finished in any of the screen printing stages, if the substrate suction or the solder suction is performed in any of the other screen printing stages, the vacuum pump or the cleaning blower Is not switched to inactive.

According to the screen printing method of the present invention, a substrate suction vacuum pump is disposed on one screen printing stage, and a solder suction cleaning blower is disposed on the other screen printing stage. In the screen printing apparatus sharing the cleaning blower, the cleaning blower is used in the other screen printing stage when a request for non-operation of the cleaning blower is made from the one screen printing stage to the other screen printing stage. When the vacuum pump is not operated from the other screen printing stage to the one screen printing stage, the vacuum pump is operated at the one screen printing stage. use Characterized in that does not perform the switching to the non-actuated when being.

  When a substrate suction or solder suction is performed at any screen printing stage, the vacuum pump or cleaning blower is not switched to non-operation, so that the vacuum pump and cleaning blower can be used for printing on multiple substrates. There is no problem in the cleaning work and the adsorption of the substrate.

  Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram showing the configuration of the screen printing apparatus, and FIGS. 2 and 3 are flowcharts of the printing operation of the screen printing apparatus.

  The screen printing apparatus 1 includes two screen printing stages 2 and 3 that perform printing operations independently of each other. Substrate transport devices 4 and 5, substrate support devices 6 and 7, squeegee devices 8 and 9, and cleaning devices 10 and 11 are arranged on the screen printing stages 2 and 3, respectively.

  The substrate transfer devices 4 and 5 are substrate transfer means for transferring the substrate before printing from the previous process to the printing positions of the screen printing stages 2 and 3 and discharging the substrate after printing at the printing position to the subsequent process. Substrate supporting devices 6 and 7 are means for positioning the substrate by vacuum suction horizontally at the printing position. The squeegee devices 8 and 9 are means for printing solder on a positioned substrate through a screen mask. The cleaning devices 10 and 11 are means for sucking and removing the solder adhering to the screen mask after printing.

  A vacuum pump 12 is disposed on the screen printing stage 2 (stage A) side. The vacuum pump 12 is connected to the substrate support devices 6 and 7 through the vent pipes 13 and 14. The vacuum pump 12 is a suction means for suctioning the substrate shared by the two screen printing stages 2 and 3.

  A cleaning blower 15 is disposed on the screen printing stage 3 (stage B) side. The cleaning blower 15 is connected to the cleaning devices 10 and 11 through vent pipes 16 and 17. The cleaning blower 15 is a suction means for sucking solder shared by the two screen printing stages 2 and 3.

  The control device 18 controls the printing operation in the stage A in an integrated manner. Similarly, the control device 19 controls the printing operation in the stage B in an integrated manner. The control device 18 and the control device 19 can communicate with each other.

  Next, a method for controlling the printing operation of the screen printing apparatus 1 will be described. In the printing operation in the stage A, the control device 18 controls the substrate transport device 4, the substrate support device 6, the squeegee device 8, the cleaning device 10, and the vacuum pump 12, and the control device 19 arranged in the stage B controls the cleaning blower 15. This is done by controlling. On the other hand, in the printing operation in the stage B, the control device 19 controls the substrate transport device 5, the substrate support device 7, the squeegee device 9, the cleaning device 11, and the cleaning blower 15, and the control device 18 arranged in the stage A uses a vacuum pump. 12 is controlled.

The control device 18 can directly control each device (the substrate transfer device 4, the substrate support device 6, the squeegee device 8, the cleaning device 10, and the vacuum pump 12) arranged on the stage A, but is arranged on the stage B. Since the operation control of the cleaning blower 15 that has been performed cannot be directly controlled, the control device 19 is requested to switch the operation of the cleaning blower 15 between operation and non-operation. The control device 19 that has received the operation request for the cleaning blower 15 from the stage A side performs control to switch the cleaning blower 15 to the operation state if the cleaning blower 15 is in an inoperative state.

  As shown in FIG. 2, when the non-operation request for the cleaning blower 15 is received, if the cleaning blower 15 is in use while the screen mask is being cleaned on the stage B side, the cleaning blower 15 is deactivated. Control to continue operation without switching. If the cleaning blower 15 is not used, control is performed to switch to non-operation as required.

  On the other hand, the control device 19 can directly control each device (substrate transport device 5, substrate support device 7, squeegee device 9, cleaning device 11, cleaning blower 15) arranged on stage B, but stage A Since the operation control of the vacuum pump 12 arranged in cannot be directly controlled, the control device 18 is requested to switch the operation of the vacuum pump 12 or not. The control device 18 that has received the operation request for the vacuum pump 12 from the stage B side performs control to switch the vacuum pump 12 to the operation state if the vacuum pump 12 is in the non-operation state.

  As shown in FIG. 3, when a non-operation request for the vacuum pump 12 is received, if the vacuum pump 12 is being used to support the substrate during screen printing on the stage A side, the vacuum pump 12 is turned on. Control to continue operation without switching to non-operation. If the vacuum pump 12 is not used, control is performed to switch to non-operation as required.

  The present invention is useful in the field of screen printing in which a plurality of substrates are printed using a vacuum pump and a cleaning blower in common.

Block diagram showing the configuration of the screen printing device Printing operation flowchart of screen printing device Printing operation flowchart of screen printing device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Screen printing device 2, 3 Screen printing stage 6, 7 Substrate support device 10, 11 Cleaning device 12 Vacuum pump 15 Cleaning blower 18, 19 Control device

Claims (3)

A plurality of screen printing stages each provided with a means for vacuum-sucking and positioning the substrate, a means for sucking and removing the solder remaining on the screen mask, and a means for controlling the printing operation;
A vacuum pump for substrate adsorption shared by all screen printing stages,
A cleaning blower for solder suction shared by all screen printing stages,
Means for switching the vacuum pump and the cleaning blower to be activated or deactivated,
Even when the substrate suction or the solder suction is finished in any screen printing stage, if the substrate suction or the solder suction is performed in any other screen printing stage, the vacuum pump or the cleaning blower is not used. A screen printing apparatus characterized by not switching to operation.   The plurality of screen printing stages are two, and one screen printing stage in which the vacuum pump is disposed and the other screen printing stage in which the cleaning blower is disposed are provided. The screen printing apparatus described in 1.   Screen printing in which a vacuum pump for substrate adsorption is arranged on one screen printing stage, a cleaning blower for solder suction is arranged on the other screen printing stage, and the vacuum pump and the cleaning blower are shared in both screen printing stages In the apparatus, when a request to deactivate the cleaning blower is made from the one screen printing stage to the other screen printing stage, when the cleaning blower is used in the other screen printing stage, the apparatus is deactivated. When the vacuum pump is not used in the one screen printing stage when the vacuum pump is not operated from the other screen printing stage to the one screen printing stage, the switching is not performed. Cut to Screen printing method, characterized in that it does not perform the example.

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