JP5163465B2 - Screen printing apparatus and screen printing method - Google Patents

Description

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

Many screen printing apparatuses are equipped with a cleaning device that removes the solder remaining on the screen mask. The cleaning device shown 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 An object of the present invention is to provide a screen printing apparatus and a screen printing method that do not interfere with cleaning work and substrate adsorption when a cleaning blower and a vacuum pump are shared.

The screen printing apparatus of the present invention includes two screen printing stages each provided with means for vacuum-sucking and positioning a substrate, means for sucking and removing solder remaining on the screen mask, and control means for controlling the printing operation. And a vacuum pump for suctioning a substrate that is disposed on one of the two screen printing stages and is shared by the two screen printing stages, and the other screen printing of the two screen printing stages. is disposed on the stage, the two cleaning blower for solder suction shared screen printing stage, and a switching means for switching the operation or non-operation of the vacuum pump and the cleaning blower, comprising on the one screen printing stage The control means provided is connected to the other disk. When the vacuum pump is used in the one screen printing stage upon receiving a non-operation request of the vacuum pump from the control means provided in the screen printing stage, the switching means The control means provided in the other screen printing stage without switching to non-operation receives a non-operation request for the cleaning blower from the control means provided in the one screen printing stage. When the screen blower is used in the other screen printing stage, the switching means is not switched to the non-operating state by the switching means .

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 the substrate suction or solder suction is performed at any of the screen printing stages, the vacuum pump or cleaning blower is not switched to non-operation, so the vacuum pump and the 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 (substrate transport device 4, substrate support device 6, squeegee device 8, cleaning device 10, vacuum pump 12) placed on stage A, but placed on 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 a 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 (2)

Two 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 control means for controlling the printing operation;
A vacuum pump for suctioning a substrate , which is disposed on one of the two screen printing stages and is shared by the two screen printing stages, and the other screen printing stage of the two screen printing stages. A cleaning blower for sucking solder shared by the two screen printing stages, and switching means for switching the vacuum pump and the cleaning blower to be activated or deactivated.
The control means provided in the one screen printing stage receives the non-operation request of the vacuum pump from the control means provided in the other screen printing stage. When using a vacuum pump, do not switch the vacuum pump to non-operating by the switching means,
The control means provided in the other screen printing stage receives the non-operation request for the cleaning blower from the control means provided in the one screen printing stage. When the screen blower is used, the switching device does not switch the cleaning blower to the non-operating state .   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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