JPH07302999A - Automatic mounting apparatus of electronic component - Google Patents

Abstract

PURPOSE:To reduce a frequency at which a filter for dust removal is replaced by a manual operation by installing a replacement means which replaces the filter, for dust removal, which has been installed in the halfway part of a vacuum pipe passage. CONSTITUTION:A cylinder 33 is actuated, a rod 34 protrudes, and a rotary table 13 starts to turn intermittently. Then, the side part of every claw part 26 for the rotary table 13 at a protrusion part which is stopped at a filter changeover station comes into contact with the side part of the rod 34, it is pressed as the rotary table 13 is turned, it is turned in the counterclockwise direction around a rotary support shaft against the energizing force of a pressure spring 31, and the protrusion part coming into contact with a cartridge 23 for the pressure spring 31 is turned. It is turned further by the elastic force of the pressure spring 31, a filter 22 is moved, a filter 22 in a next position is positioned in the position of a vacuum pipe passage, and a changeover operation is completed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mounts an electronic component on a printed circuit board by a suction nozzle that holds the electronic component by vacuum suction through a vacuum conduit communicating with a vacuum source and removes dust in the middle of the vacuum conduit. The present invention relates to an electronic component automatic mounting device having a filter.

[0002]

2. Description of the Related Art A device for automatically mounting electronic components of this type is disclosed in Japanese Patent Laid-Open No.
Japanese Patent Laid-Open No. 3-174396, a suction nozzle for adsorbing an electronic component is provided with a filter for removing dust, and after foreign matter such as dust that is sucked during component adsorption is sucked into the nozzle, a vacuum pump that is a vacuum source. It prevents it from flowing to the side.

[0003]

However, in the above-mentioned prior art, when foreign matter is accumulated to some extent, the vacuum line is clogged and the vacuum pressure is lowered, so that the filter must be replaced manually, which is troublesome. It is effective to increase the area of the filter in order to lengthen the time until the vacuum line is clogged and reduce the number of replacements, but if this is done, the volume of the space for accommodating the filter in the vacuum line must be increased. However, there is a drawback in that it takes a long response time from when the suction nozzle separates the electronic component and the negative pressure is cut off until the valve is opened and the negative pressure of the suction nozzle becomes capable of sucking the electronic component.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to reduce the frequency of manual replacement of a dust removal filter provided on the way of a vacuum pipe path from a suction nozzle to a vacuum source.

[0005]

Therefore, according to the present invention, the electronic component is mounted on the printed circuit board by a suction nozzle which holds the electronic component by vacuum suction through a vacuum conduit communicating with a vacuum source, and a vacuum is applied from the nozzle. In the electronic component automatic mounting device having a filter for dust removal in the middle of the vacuum conduit communicating with the source, a replacement means for replacing the filter is provided.

Further, according to the present invention, the electronic component is mounted on the printed circuit board by the suction nozzle which holds the electronic component by vacuum suction through the vacuum pipeline communicating with the vacuum source, and a dust removing filter is provided in the middle of the vacuum pipeline. The electronic component automatic mounting device has an accommodating body having a plurality of the filters and a switching means for changing the position of the accommodating body to switch the filters.

Further, according to the present invention, the electronic component is mounted on the printed circuit board by the suction nozzle which holds the electronic component by vacuum suction through the vacuum pipeline communicating with the vacuum source, and a dust removing filter is provided in the middle of the vacuum pipeline. In an electronic component automatic mounting device having the above-mentioned storage unit having a plurality of the filters, the position of the storage unit is changed by engaging with an engaging portion formed in the storage unit and moving the suction nozzle. A switching means for switching the filter is provided.

[0008]

According to the structure of the first aspect, the replacement means automatically replaces the dust removal filter in the middle of the vacuum pipe line. According to the configuration of claim 2, the switching means changes the position of the housing having a plurality of filters to switch the filters.

According to the third aspect of the invention, the switching means engages with the engaging portion formed on the housing and changes the position of the housing with the movement of the suction nozzle to switch the filter.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a Y table that moves in the Y direction by rotation of the Y-axis motor 2, and reference numeral 3 indicates that it moves in the X direction on the Y table 1 by rotation of the X-axis motor 4. As a result, an XY table that moves in the XY directions, and a printed circuit board 6 on which a chip-shaped electronic component 5 (hereinafter, referred to as a chip component or a component) is mounted is fixedly mounted on a fixing unit (not shown).

Reference numeral 7 denotes a supply table, on which a large number of component supply devices 8 for supplying the chip components 5 are arranged. Reference numeral 9 denotes a supply base drive motor, which rotates the ball screw 10 so that the supply screw 7 is fitted to the linear guide 1 via a nut (not shown) fixed to the supply base 7.
It is guided by 2 and moves in the X direction. Reference numeral 13 denotes a rotary table that rotates intermittently, and mounting heads 15 having a plurality of suction nozzles 14 are arranged at equal intervals on the outer edge of the table 13 in accordance with the intermittent pitch.

Reference numeral I denotes a suction station at which the suction nozzle 14 stops the mounting head 15 for picking up and picking up the component 5 from the supply device 8 by intermittent rotation of the rotary table 13. Adsorb 5 16 is a component 5 that the suction nozzle 14 sucks
This is a component recognition device for recognizing the positional shift of the component 5 by imaging the lower surface of the component 5 with a camera in a predetermined visual field range and recognizing the imaged screen, and is provided in the recognition station II.

Next mounting head 1 of the recognition station II
The position where 5 is stopped is the angle correction station III, and the angle amount for correcting the angular position deviation of the chip component 5 due to the recognition result of the recognition device 16 is added to the predetermined angle amount shown in the mounting data (not shown). The head rotating device 17 rotates the mounting head 15 in the θ direction by an amount. The θ direction is the direction of rotation around the axis of the nozzle 14.

The next stop position next to the angle correction station III is the mounting station IV, and the component 5 to be picked up by the suction nozzle 14 of the station IV on the board 6.
Are mounted by lowering the mounting head 15. As shown in FIG. 3, a suction hole 18 that opens to the component suction surface, which is the lower end surface, is provided in the suction nozzle 14 in the axial direction, and can communicate with a vacuum chamber 19 in the head 15. That is, the suction hole 18 communicates with the vacuum chamber 19 in a state where the nozzle 14 descends so that the chip component 5 can be adsorbed. It is designed not to leak.

A vacuum line 20 extends from the vacuum chamber 19 and communicates with a vacuum pump (not shown) which is a vacuum source via a solenoid valve 21. The vacuum pipe lines 20 extending from each head 15 are integrated into one and communicate with a vacuum pump. A filter 22 for dust collection is provided in the vacuum conduit 20 on the way to the solenoid valve 21 for collecting foreign matters such as dust sucked by the suction nozzle 14 so as not to pass through the solenoid valve 21 side. The vacuum pump is protected from dust and the like. The solenoid valve 21 opens and closes the vacuum pipe line 20 under the control of a CPU (not shown), and is turned on when the suction nozzle 14 sucks the chip component 5 in the suction station I to open the vacuum pipe line 20 and generate a negative pressure. When the head 15 reaches the mounting station IV and the suction nozzle 14 descends to mount the chip component 5, the head 15 is turned off and the conduit 20
Is closed and the vacuum suction of the chip component 5 is released.

As shown in FIGS. 4 and 5, six filters 22 are arranged in a plane direction in a cartridge 23 as a container. That is, the entire surface of the communication hole 25 is provided in the middle of the communication holes 25 formed at equal angular intervals on a concentric circle centered on the rotation support shaft 24 formed in the center of the cartridge 23. Reference numeral 26 is a claw portion as an engaging portion projecting from the outer circumference of the cartridge 23 in correspondence with the position of each communication hole 25. The cartridge 23 is detachably attached to a storage recess 28 provided in a protrusion 27 protruding from the rotary table 13 as shown in FIGS. 1 and 6, and is attached as shown in FIGS. In this state, the vacuum conduit 20 penetrating the inside of the protrusion 27 and the communication hole 25 communicate with each other. Reference numeral 29 is a packing that is tightly attached to the surface of the cartridge 23 so that the vacuum pressure does not leak from the connecting portion between the communication hole 25 and the vacuum conduit 20, and the packing 29 is attached to the protrusion 27 so as not to come off even without the cartridge. It is glued.

Grooves 30 are formed on both sides of the projection 27 so as to sandwich the accommodating recess 28, and serve as a passage for allowing the rotary support shaft 24 to penetrate therethrough and to be separated therefrom. The support shaft 24 is made rotatable and the communication hole 25 is rotated by the rotation of the cartridge 23 so that the other communication hole 25 is connected to the vacuum conduit 20. Reference numeral 31 is a pressing spring that presses the concave portion 32 formed around the cartridge 23, and fixes the cartridge 23 at a position where one communication hole 25 communicates with the vacuum conduit 20 as shown in FIG.

6 to 10, reference numeral 33 denotes a cylinder serving as a replacement means or a switching means provided in a filter switching station which is a predetermined station at which the rotary table 13 stops. The rod 34 that goes in and out projects and abuts against the side portion of the claw portion 26 of the cartridge 23 attached to the storage recess 28, and is pulled in so as not to hit. The cylinder 33 is omitted in FIGS. 1 and 2.

The operation of the above configuration will be described below. First, a cartridge 23 is attached to the storage recess 28 corresponding to each head 15, and a filter 22 is attached to each vacuum line 20. In this state, if the automatic driving key of the operation unit (not shown) is pressed,
Automatic operation of the electronic component automatic mounting device is performed. During this time, the rod 34 is retracted so that it does not contact the claw portion 26.

That is, the mounting head 15 is moved for each station by the rotation of the rotary table 13, and the suction stage is moved.
In the section I, the suction nozzle 14 of the mounting head 15 stopped at the station descends as the mounting head 15 descends. With this lowering, the solenoid valve 21 corresponding to the head 15 is turned on and the suction hole 18 of the suction nozzle is turned on.
Vacuum suction is further started, and the chip component 5 is adsorbed and taken out from the desired component supply device 8 stopped by the movement of the supply base 7, and the mounting head 15 is raised.

Next, the head 15 is connected to the rotary table 1
3 moves to the next station by intermittent rotation, and the next mounting head 15 moves to the suction station I.
Similarly, the component suction operation is performed. Next, the suction nozzle 14 holding the chip component 5 by suction holds the recognition station I.
When moved to I, the component recognizing device 16 recognizes the displacement of the chip component 5 with respect to the suction nozzle 14, and the head rotating device 18 is driven to rotate the head 15 in the next angle correction station III. The angular position deviation recognized to have the mounting angle shown in the mounting data (not shown) is corrected, and the angular position is positioned.

Next, in the mounting station IV, the XY test is performed.
The bull 3 is positioned at the position where the component 5 shown in the mounting data should be mounted, with the correction based on the recognition result taken into consideration, and the mounting head 15 descends to mount the component 5. At this time, the solenoid valve 21 is turned off and the vacuum adsorption is cut off, so that the chip component 5 is mounted at a predetermined position on the printed circuit board 6 to which the adhesive is applied in advance.

In this way, the chip components 5 are sequentially mounted. Just before the chip components 5 are sucked, the suction nozzle 14 sucks dust and the like, and the dust and the like are sucked into the suction holes 18,
It passes through the vacuum chamber 19 and the vacuum conduit 20 and is captured and collected by a filter 22 provided in the middle of the communication hole 25. In this way, when the operation is continued for a predetermined time, which is the time to be replaced, which is stored in the RAM, which is a storage device (not shown), the CPU (not shown) determines that the filter 22 should be replaced, and the chip component 5 The automatic operation for mounting the filter is interrupted, and the switching operation of the filter 22 is performed.

That is, the cylinder 33 operates and the rod 34
Is projected from the position shown in FIG. 7 to FIG.
Starts intermittent rotation. Then, first, the side portion of the claw portion 26 located at the outermost diameter portion with respect to the rotation center of the rotary table 13 of the protrusion stopped at the filter switching station comes into contact with the side portion of the rod 34, so that the rotary table is rotated. The protrusion of the pressing spring 31, which is pushed in accordance with the rotation of 13 and rotates counterclockwise around the rotation support shaft 24 against the biasing force of the pressing spring 31 to abut against the cartridge 23, is a concave portion. It is rotated to a position beyond the mountain portion between the concave portions 32 adjacent to 32. In this way, the elastic force of the pressing spring 31 causes the filter 2 to rotate further, and as shown in FIG.
2 moves and the filter 22 at the next position B moves to the vacuum line 2
The position is set to 0 and the switching is completed.

This operation is performed for each cartridge 23 corresponding to each head 15, and the filter 22 is automatically replaced. In this way, the filter 22 is automatically replaced, but when the switching of the filter 22 is completed for the cartridges 23 corresponding to all the heads 15, the automatic operation of component mounting is automatically restarted.

In the case where the solenoid valve 21 is OFF, the filter switching station is set to any one of the stations during the movement of the head 15 from the mounting station IV to the suction station I. In this case, the switching operation of the filter 22 can be performed without stopping the automatic operation while the automatic operation of the mounting operation of the chip component 5 is being performed. In this case, if the rotation speed of the rotary table 13 in the normal automatic operation of component mounting is too fast for switching, the switching operation may be performed by reducing the rotation speed to an appropriate speed for switching. The parts can be mounted without delay even if they are delayed.

In this way, the automatic operation is continued, the six filters 22 provided in the cartridge 23 are used, and the last filter 22 should be replaced (determined by the operating time). When, the automatic operation is stopped and the abnormality is notified. Next, the operator determines that the cartridge 23 should be replaced, and the cartridge 23 corresponding to each head 15 is replaced.
Manually replace.

That is, the cartridge 23 in the state of FIG. 5 is first moved upward in FIG. 5 against the urging force of the spring 31 (the rotation support shaft 24 moves along the groove 30), and further to the left. Pull out after the state of FIG. 11 and remove as shown in FIG. Next, the new cartridge 23 is mounted in the storage recess 28 as shown in FIG. 5 from the state of FIG. 12 through the state of FIG. Perform this operation on all cartridges 2 of head 15
Do about 3.

Next, the automatic operation may be started. In the present embodiment, the switching timing of the filter 22 is stored in the RAM (not shown) and is automatically performed in accordance with the timing. However, a key for switching the filter is prepared, and the key is pressed. The filter switching operation described above may be performed. This key may be pressed by pressing a touch panel switch formed on the CRT. Further, the pressing of this key may be received when the automatic operation is stopped, or may be received during the automatic operation and the switching operation of the filter 22 may be performed while the automatic operation of mounting the components is performed as described above. .

[0030]

As described above, according to the present invention, since the filter is automatically replaced, the frequency of manual filter replacement is reduced. Further, if the filter is exchanged by using the movement of the suction nozzle only by the operation of engaging the switching means, the filter can be automatically exchanged with a simple configuration.

[Brief description of drawings]

FIG. 1 is a side view showing a vacuum path of an electronic component automatic mounting apparatus to which the present invention is applied.

FIG. 2 is a plan view of the mounting apparatus.

FIG. 3 is an enlarged side sectional view of the mounting head.

FIG. 4 is a side sectional view showing a state in which a cartridge is attached.

FIG. 5 is a plan view showing a state in which a cartridge is attached.

FIG. 6 is a plan view showing a state in which the cartridge is attached to the rotary table.

FIG. 7 is a plan view showing a filter switching operation.

FIG. 8 is a plan view showing a filter switching operation.

FIG. 9 is a plan view showing a filter switching operation.

FIG. 10 is a plan view showing a filter switching operation.

FIG. 11 is a plan view showing a cartridge replacement operation.

FIG. 12 is a plan view showing a cartridge replacing operation.

[Explanation of symbols]

 5 Chip-shaped Electronic Parts (Electronic Parts) 6 Printed Circuit Board 14 Adsorption Nozzle 20 Vacuum Pipe 22 Filter 23 Cartridge (Housing) 26 Claw (Engagement) 33 Cylinder (Exchange) (Switching)

Claims (3)

[Claims] 1. A dust nozzle is used for mounting an electronic component on a printed circuit board by a suction nozzle that holds an electronic component by vacuum suction through a vacuum conduit communicating with the vacuum source, and removing dust in the middle of the vacuum conduit communicating with the vacuum source from the nozzle. In an electronic component automatic mounting apparatus having a filter for use with electronic parts, an electronic component automatic mounting apparatus is provided with a replacement means for replacing the filter. 2. An electronic component that mounts the electronic component on a printed circuit board by a suction nozzle that holds the electronic component by vacuum suction through a vacuum conduit communicating with a vacuum source and has a dust removal filter in the middle of the vacuum conduit. The automatic mounting apparatus is provided with an accommodating body having a plurality of the filters and a switching means for changing the position of the accommodating body to switch the filters. 3. An electronic component that mounts the electronic component on a printed circuit board by a suction nozzle that holds the electronic component by vacuum suction through a vacuum conduit communicating with a vacuum source and has a dust removal filter in the middle of the vacuum conduit. In an automatic mounting device, a container having a plurality of the filters and an engaging portion formed on the container are engaged, and the position of the container is changed according to the movement of the suction nozzle to switch the filter. An electronic component automatic mounting device, characterized in that switching means is provided.