JP2014064987A - Nozzle control device, dust removing device, and nozzle control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a nozzle control device, a dust removing device and a nozzle control method, which can prevent the drawback that foreign substances are scattered by the air discharged from an air discharge port so that the dust can be reliably removed from a work-piece.SOLUTION: A nozzle control device 1 controls a nozzle 4 which is composed of: a spray port 2 for blowing dust removal air to one side of a pair of connectors C connected to each other; and a suction port 3 for sucking ambient air. The nozzle control device 1 comprises a nozzle control unit 10 for starting a blow-out from the spray port 2 after the start of the suction from the suction port 3, and then for stopping the suction after the stop of the aforementioned blow-out.

Description

  The present invention relates to a nozzle control device, a dust removal device, and a nozzle control method applied to the removal of dust on a connector as a workpiece.

In order to reduce the contact failure rate of the ROM substrate, a dust removing device shown in Patent Document 1 is used.
This dust removal apparatus has a dust removal head in which an air discharge port is formed in a gap between the tip portion of the nozzle hood and the tip portion of the air suction cylinder.
In this dust removing device, air is discharged from the air discharge port in the direction of the convex portion of the workpiece while the convex portion of the workpiece is arranged inside the air suction port of the dust removing head, and the air is The workpiece is dedusted by suction from the suction cylinder.

JP 2008-62122 A

By the way, in the dust removal apparatus as described above, a dust removal head having an air suction port and an air discharge port is used, but there is a problem that the contact failure of the ROM substrate due to foreign matters is still not lost.
Further, in the dust removal head, while sucking from the air suction cylinder, foreign matter is scattered by the air discharged from the air discharge port, and this foreign matter scattering may cause a secondary failure.

  The present invention has been made in order to solve the above-mentioned problems, and its purpose is to prevent the occurrence of defects in which foreign matter is scattered by the air discharged from the air discharge port, and to reliably remove dust from the workpiece. It is an object of the present invention to provide a nozzle control device, a dust removal device, and a nozzle control method.

  The present invention is a nozzle control device for controlling a nozzle comprising a blowing port for blowing dust removal air to one side of a pair of connectors connected to each other and a suction port for sucking in ambient air. A nozzle control unit that starts spraying from the spraying port after the start of suction, and then stops the suction after stopping the spraying, is provided.

  According to the present invention, it is possible to prevent the occurrence of a problem that foreign matters are scattered around and to reliably remove dust from the workpiece.

It is a schematic block diagram of the nozzle control apparatus with which this invention is applied. It is a top view which shows the nozzle arrange | positioned above one connector. It is a front view which shows the state with which a pair of board | substrate was connected via the connector. It is a top view of one connector which performs dust removal. It is a figure which shows the time chart performed in the nozzle control part of a nozzle control apparatus. It is a schematic block diagram of the dust removal apparatus with which the nozzle control part which concerns on this invention was integrated. It is a schematic block diagram which shows the dust removal apparatus of a structure different from FIG.

  Hereinafter, a nozzle control device and a dust removal device according to the present invention will be described with reference to FIGS.

FIG. 1 shows a nozzle control device 1 according to the present invention, which has a nozzle control unit 10.
The nozzle control unit 10 includes a blowing port 2 for blowing dust removal air and a suction port for sucking ambient air to the lower connector C1, which is one side of a pair of connectors C (C1, C2) connected to each other. 3 is controlled.
In the nozzle 4, a blowing port 2 for blowing dust removal air is disposed at the center, and a suction port 3 for sucking air is disposed concentrically around the blowing port 2. Further, as shown in FIG. 2, the inner diameter of the nozzle 2 of the nozzle 4 is set to be the same as the horizontal width (d) of the coupling portion C3 (described later) of the connector C1 to be dust-removed.

As shown in FIG. 3, the connector C includes a lower connector C1 attached to the upper surface of the image control board B1, and a ROM board on which the ROM is mounted on the upper surface with a space above the image control board B1. It is comprised from the upper side connector C2 attached to the lower surface of B2. The image control board B1 and ROM board B2 are electrically connected via connectors C1 and C2.
Further, as shown in FIG. 4, the connector C1 to be dust-removed is a female connector having a concave coupling portion C3, and the other connector C2 is a male connector having a convex coupling portion (not shown). Type connector. And in these connectors C1 and C2, an electrical connection is made | formed by combining a coupling | bond part.
As shown in FIGS. 1 and 2, the connector C1 is surrounded by the suction port 3 while dust-removing air is blown from the blowing port 2 of the nozzle 4 positioned right above to the coupling portion C3. Air is sucked in for a certain period of time, whereby dust scattered from the coupling portion C3 is removed.

Further, as shown in FIGS. 1 and 2, when blowing from the nozzle 4 and suction from the suction port 3, the nozzle 4 is connected to the connector C1 in the direction indicated by the arrow (A). Move relative to it. At this time, the nozzle 4 may be moved with respect to the connector C1, or the connector C1 may be moved with respect to the nozzle 4.
Moreover, the pressure of the dust removal air from the blowing port 2 of the nozzle 4 is set to about 0.5 to 0.6 MPa.

  Next, with reference to FIG. 5, a time chart of dust removal air blow and air suction control executed by the nozzle control unit 10 of the nozzle control device 1 will be described.

As shown in FIG. 1, the operation is started with the nozzle 4 disposed above the connector C1. First, after starting air suction from the suction port 3 at time T1, spraying of dust removal air from the spray port 2 is started at time T2. Thereafter, air suction from the suction port 3 and dust removal air from the spray port 2 are performed for a certain period of time, and the spray of dust removal air from the spray port 2 is stopped at time T3. Thereafter, the air suction from the suction port 3 is stopped at time T4. As a result, it is possible to prevent the occurrence of a problem that foreign matters are scattered around and to reliably remove dust from the connector C1.
Then, after the dust removal of the connector C1 is completed after the time T1 to T4, the image control board B1 and the ROM board B2 are connected via the connectors C1 and C2 at time T5 to T6 as shown in FIG. Connect electrically.

  When the time chart of T1 to T4 is executed, the nozzle 4 is moved relative to the connector C1, but at this time, the time chart may be performed not only once but a plurality of times. good.

Next, a dust removing device 20 in which the nozzle control unit 10 is incorporated will be described with reference to FIG.
The dust removing device 20 includes a flow path 21 for supplying air to the blowing port 2 of the nozzle 4 and a flow path for sucking air from the suction port 3 of the nozzle 4 by the nozzle control unit 10 that executes the time chart of FIG. The valve device 23 that opens and closes 22 is controlled.
The valve device 23 includes an electromagnetic valve 24 provided in the middle of the flow path 21 and an electromagnetic valve 25 provided in the middle of the flow path 22. The electromagnetic valves 24, 25 open and close the flow paths 21, 22. I do.
That is, in FIG. 6, the dust removing device 20 is configured by the valve device 23 having the electromagnetic valves 24 and 25 and the nozzle control device 1 having the nozzle control unit 10 that controls the valve device 23.

  In the dust removing device 20, based on the control signal output from the nozzle control unit 10, the electromagnetic valve 25 is opened at time T 1 and air suction from the suction port 3 is started at time T 1. The valve 24 is opened to start blowing dust-removing air from the blowing port 2.

Thereafter, air suction from the suction port 3 and blowing of dust removal air from the blowing port 2 are performed for a certain period of time, and at time T3, the solenoid valve 24 is closed to stop blowing dust removal air from the blowing port 2. Thereafter, at time T4, the electromagnetic valve 25 is closed and air suction from the suction port 3 is stopped. Thereby, generation | occurrence | production of the malfunction which a foreign material disperses around can be prevented, and dust removal of a workpiece | work can be performed reliably.
Note that such dust removal air blowing and suction are performed while moving the nozzle 4 relative to the connector C1 in the direction indicated by the arrow (A).

  If the dust removal processing is completed by closing the solenoid valve 25 at the time T4, the connector C1 on the upper surface of the image control board B1 and the connector C2 on the lower face of the ROM board B2 are connected between the times T5 and T6. The operation of attaching the ROM substrate B2 on the image control substrate B1 is performed.

In FIG. 6, the valve device 23 for operating the electromagnetic valves 24 and 25 is provided. Instead of the valve device 23, as shown in FIG. 7, a flow path for supplying air to the blowing port 2 of the nozzle 4. 21 and a switch 30 for opening and closing the flow path 22 for sucking air from the suction port 3 may be provided.
The switch 30 can be operated manually, but is provided with switch operating means 31 for mechanically operating the switch 30 so that the switch operating means 31 is operated based on a control signal from the nozzle control unit 10. Anyway.

As described above in detail, in the nozzle control unit 10 of the nozzle control device 1 according to the present embodiment, after the surrounding air from the suction port 3 of the nozzle 4 starts to be sucked, the blowing of dust-removing air from the spray port 2 is started. To do. Thereafter, after a certain period of time has passed and the blowing of dust-removing air is stopped, air suction from the suction port 3 is stopped (time T1 to T4).
That is, the nozzle control unit 10 blows dust-removing air from the blowing port 2 for a certain period of time (between times T2 and T3) during air suction from the suction port 3 (between times T1 and T4). Therefore, it is possible to prevent the occurrence of a problem that foreign matters are scattered around, and it is possible to reliably remove dust from the workpiece.

  In the above embodiment, after the dust removal of the female connector C1, the connector C1 is coupled to the connector C2. However, the present invention is not limited to this, and the male connector C2 is used together with the female connector C1. After removing the dust, the connector C1 may be coupled to the connector C2.

  In the time chart, dust removal air is blown from the blowing port 2 between times T2 and T3. At this time, in order to efficiently lift dust on the connector C2, dust removal air is used. The flow rate may be changed intermittently.

  Moreover, although the internal diameter of the blowing port 2 of the nozzle 4 was set to be the same as the width (d) of the coupling portion C3 of one connector C1, it is not limited to this and is set according to the width of the entire connector C1. Also good.

  While the nozzle 4 is moved relative to the connector C1 during execution of the time chart, the present invention is not limited to this, and the time chart may be executed in a state where the nozzle 4 is disposed at a fixed position. At this time, the time chart may be executed a plurality of times while gradually shifting the position of the nozzle 4 in the same connector C1.

  The nozzle control device 1 starts spraying from the spray port 2 after the suction from the suction port 3 is started, stops the spraying from the spray port 2 after a certain period of time has elapsed, and then sucks the suction port 3. The “nozzle control method” for stopping the suction from the nozzle is applied.

  As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the concrete structure is not restricted to this embodiment, The design change etc. of the range which does not deviate from the summary of this invention are included.

DESCRIPTION OF SYMBOLS 1 Nozzle control apparatus 2 Spraying port 3 Suction port 4 Nozzle 10 Nozzle control part 20 Dust removal apparatus 21 Flow path 22 Flow path 23 Valve apparatus C (C1, C2) Connector

Claims (5)

A nozzle control device for controlling a nozzle comprising a blowing port for blowing dust removal air on one side of a pair of connectors connected to each other and a suction port for sucking ambient air,
A nozzle control device comprising: a nozzle control unit that starts spraying from the spraying port after starting suction from the suction port, and then stops the suction after stopping the spraying.   2. The nozzle according to claim 1, wherein a blowing port for blowing the dust-removing air is disposed at the center of the nozzle, and a suction port for sucking the air is disposed concentrically around the blowing port. Control device.   2. The nozzle control device according to claim 1, wherein an inner diameter of the nozzle outlet is set to be equal to a width of a coupling portion formed in the one connector. A dust removing device having a nozzle comprising a blowing port for blowing dust removal air on one side of a pair of connectors connected to each other and a suction port for sucking in ambient air,
A valve device having a valve for opening and closing a flow path for supplying air to the blowing port of the nozzle and a flow path for sucking air from the suction port of the nozzle;
A nozzle control unit that controls opening and closing of the valve of the valve device, starts spraying from the spray port after starting suction from the suction port, and then stops the suction after stopping the spraying, and A dust removing device comprising the dust removing device. A nozzle control method for controlling a nozzle comprising a blowing port for blowing dust removal air on one side of a pair of connectors connected to each other and a suction port for sucking air,
A nozzle control method comprising: starting spraying from the spraying port after starting suction from the suction port, and stopping the spraying after a certain time has elapsed and stopping the spraying.

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