JPH10242694A - Mounting head of electronic component and electronic component mounting equipment having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate maintenance of a filter and enable eliminating dust in the upper stream side of a suction path, by detachably arranging an air filter in the upper stream side end part of the suction path. SOLUTION: A mounting head 9 is constituted of a head main body 15 wherein a suction path 31 is formed in the shaft core, a suction nozzle 12 wherein a nozzle hole 32 is formed in the shaft core, and an air filter 16 mounted on the lower end part of the head main body 15. The suction nozzle 12 is hermetically mounted on the mounting head 9, the nozzle hole 32 and the suction path 31 of the head main body 15 are continuously connected via the air filter 16, and the down stream side end of the suction path 31 is continuously connected with a vacuum suction equipment via vacuum piping. As a result, maintenance of the air filter itself is facilitated, the air filter can be arranged at the position where effect of dust elimination is obtained best, and dust elimination is enabled with excellent efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting head for an electronic component for sucking an electronic component and mounting the sucked electronic component on a substrate or the like, and an electronic component mounting apparatus having the same.

[0002]

2. Description of the Related Art Conventionally, as this kind of electronic component mounting apparatus, one described in Japanese Patent Application Laid-Open No. 7-302999 is known. In this electronic component mounting device, a supply unit that supplies an electronic component to the mounting device main body with the mounting device main body interposed therebetween,
A mounting unit for mounting electronic components from the mounting device main body is provided, and the mounting device main body is provided with a mounting head having a plurality of suction nozzles mounted on an outer peripheral portion of the rotary table. The rotation table rotates the mounting head between the supply unit and the mounting unit while intermittently rotating.At this time, the mounting head sucks the electronic components from the supply system with the suction nozzles, and transfers them to the mounting system board. Mounting. Each suction nozzle has a nozzle hole formed in the axis thereof, and the nozzle hole communicates with a suction passage shared by each nozzle formed in the main body of the mounting head. The suction passage is connected to a vacuum suction device via a vacuum pipe.

In this type of electronic component mounting apparatus, when an electronic component is sucked by a suction nozzle, dust is sucked at the same time, which may adversely affect a switching valve of a suction system. Therefore, a filter unit is interposed in the vacuum pipe so as to be attached to the outer peripheral surface of the rotary table. The filter unit includes a filter holder on which a plurality of filters are mounted in a circumferential direction, and one of the plurality of filters faces the vacuum pipe. Further, a switching valve is incorporated in the vacuum line located downstream of the filter. If the filter facing the vacuum line is clogged (actually periodically), rotate the filter holder by one pitch using the rotation of the rotary table so that the next new filter faces the vacuum line. I have to.

[0004]

As described above, in the conventional electronic component mounting apparatus, the filter is interposed in the vacuum pipe connecting the mounting head and the vacuum suction device. On the way to
This will allow the suction of dust. In such a case, since the suction nozzle is detachable, even if dust adheres or clogs in the nozzle hole, it can be removed relatively easily. However, a vacuum passage extending to the suction passage of the mounting head body and the filter unit. Then, it is impossible to remove dust unless these are removed from the apparatus. However, if the filter is attached to the suction nozzle, such a problem can be solved. However, since the suction nozzles are frequently used and are frequently replaced in accordance with electronic components, it is extremely complicated to mount the filters on the suction nozzles and manage the replacement time, and no dust adheres to the inside of the filter. It is necessary to store the suction nozzles as described above, and it is assumed that the management becomes complicated in this regard as well.

An object of the present invention is to provide an electronic component mounting head and an electronic component mounting apparatus having the same, which can easily manage a filter and remove dust as much as possible on the upstream side of a suction path. That is the purpose.

[0006]

According to the present invention, there is provided an electronic component mounting head comprising: a head main body having a suction passage formed therein; and a nozzle detachably mounted at a lower end portion of the head main body and communicating with the shaft through the suction passage. In an electronic component mounting head having a suction nozzle having a hole, an air filter is detachably provided at an upstream end of a suction passage.

According to this configuration, since the air filter is provided at the upstream end of the suction passage of the head main body, dust can be removed at the most upstream end of the suction passage excluding the suction nozzle. Further, since the air filter is detachably provided at the upstream end of the suction passage, the air filter can be replaced in the same manner as the suction nozzle. Furthermore, since the air filter is provided not at the suction nozzle but at the upstream end of the suction passage facing the suction nozzle, the air filter can be replaced regardless of the replacement of the suction nozzle. Will be appropriate and easy.

In this case, the lower end of the head main body has an inner cylindrical portion forming the upstream side of the suction passage, and an outer cylindrical portion to which the base of the suction nozzle is mounted, and the air filter is attached to the inner cylindrical portion. It is preferred that they are mounted.

According to this configuration, the air filter does not hinder the attachment / detachment of the suction nozzle and the maintenance of airtightness, and the presence or absence of the air filter can be directly visually recognized in a state where the suction nozzle is detached. .

[0010] In this case, the air filter has a filter main body formed in a cylindrical shape, and a bottomed filter holder that is hermetically mounted on the inner cylindrical portion on the inner peripheral surface and the filter main body is mounted on the outer peripheral surface. Preferably, the filter holder has a plurality of through-holes, one end of which is open to the outer peripheral surface and the other end of which is in communication with the suction passage.

According to this configuration, since the filter main body is located at the lower end of the head main body on the outer peripheral surface of the inner cylindrical portion, the effective area of the filter is not the sectional area of the suction passage but the total area of the plurality of through holes. It becomes a cross-sectional area, and the effective area can be increased. For this reason, a decrease in suction performance can be suppressed, and the life of the filter can be extended.

In this case, on the outer peripheral surface of the filter holder,
That an annular groove connected to a plurality of through holes is formed,
preferable.

According to this configuration, the effective area of the filter becomes the surface area of the annular groove including the plurality of through holes, and the effective area can be further increased. In other words,
Almost the entire surface of the filter can be effectively used for dust prevention, and the life of the filter can be further extended.

According to another aspect of the present invention, there is provided an electronic component mounting apparatus including the electronic component mounting head according to any one of claims 1 to 4, wherein the head moving mechanism moves the mounting head. And a filter attachment / detachment mechanism configured to be capable of holding the air filter and relatively approaching the attachment head from which the suction nozzle has been detached, and attaching / detaching the air filter to / from the attachment head.

According to this configuration, the air filter is automatically mounted (replaced) by holding the air filter in the filter attaching / detaching mechanism and relatively approaching the mounting head from which the suction nozzle has been detached. can do.
Of course, if a plurality of portions of the filter attaching / detaching mechanism capable of holding the air filter are provided, the air filter can be automatically replaced. That is, the air filter can be replaced without stopping the operation of the device.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an electronic component mounting apparatus according to an embodiment of the present invention. This electronic component mounting apparatus is a so-called multifunctional chip mounter, and is configured to mount various electronic components such as surface mount components such as chip capacitors and chip resistors, and multi-lead components such as flat pack ICs. FIG. 1 is a plan view of an electronic component mounting apparatus. As shown in FIG. 1, the electronic component mounting apparatus 1 includes a mounting apparatus main body 2 for mounting a supplied electronic component on a substrate, and a surface mounted on the mounting apparatus main body 2. A first component supply device 3 for supplying small electronic components such as mounted components and a second component supply device 4 for supplying large electronic components such as multi-lead components to the mounting device body 2 are provided.

The mounting apparatus main body 2 includes a machine base 5, a substrate transport mechanism 6 having a set table 7 in the center of the machine base 5,
XY stage 8 with one or two mounting heads 9
And The operation of the XY stage 8 causes the mounting head 9 to move the first component supply device 3 or the second component supply device 4.
Then, the electronic component is picked up and mounted on a board set on the set table 7.
When the mounting of the electronic components on the board is completed by repeating this operation, the board is sent out on the transfer path 10 by the board transfer mechanism 6, and a new board is introduced into the set table 7 instead. .

The first component supply device 3 has a large number of cassette-type tape feeders 11 arranged side by side. The leading end of the component supply side is located on one side of the machine base 5 parallel to the transport path 10. The mounting head 9 is provided so as to face the pickup area of the mounting head 9. Each of the tape feeders 11 accommodates electronic components while being loaded on a carrier tape (not shown), and the electronic components are supplied one by one from the leading end of the tape feeder 11.

The second component supply device 4 is disposed on one other side of the machine base 5 facing the first component supply device 3 at right angles to one side thereof. In the second component supply device 4, a large number of electronic components are arranged and arranged on a tray, and one or more trays are mounted on a pallet P, and the pallet P is set with the first component supply device 3. The electronic component is supplied to the mounting apparatus main body 2 by facing the pickup position between the table 7.

On the other hand, at the lower end of the mounting head 9, a suction nozzle 12 for sucking an electronic component is detachably mounted, and the suction nozzle 12 can be replaced according to the planar shape and weight of the electronic component. It has become. In this case, the suction nozzles 12 for replacement are accommodated in a nozzle stocker 13 arranged on the upper surface of the machine base 5, and the nozzle stocker 13 has a plurality of types of suction nozzles 12 held in the mounting posture.
Are set side by side. In addition, nozzle stocker 1
A filter stocker 14 for storing an air filter 16 described below is disposed adjacent to the filter stocker 3.

Next, the mounting head 9 equipped with the air filter 16 will be described in detail with reference to FIG. As shown in the figure, the mounting head 9 is concealed by a head body 15 having a suction passage 31 formed in the shaft, a suction nozzle 12 having a nozzle hole 32 formed in the shaft, and a base 33 of the suction nozzle 12. The air filter 16 is attached to the lower end of the head main body 15 as described above. The suction nozzle 12 is airtightly mounted on the mounting head 9, and in this state, the nozzle hole 32 of the suction nozzle 12 and the suction passage 31 of the head main body 15 are separated by the air filter 1.
6. The downstream end of the suction passage 31 communicates with a vacuum suction device via a vacuum pipe (both are not shown).

The head main body 15 includes a stepped tubular member 34 having the above-described suction passage 31 formed in the axis thereof, and a tubular member 34.
And a holding mechanism 35 attached to a lower outer surface of the tubular member 34. The holding mechanism 35 includes a support block 36 fixed to the tubular member 34.
And a pair of left and right gripping arms 37, 37 rotatably supported by the support block 36. The lower half of the support block 36 is hollowed out in a truncated cone shape, and the inner circumferential surface of the circumferential wall (outer circumferential portion) 38 of the hollowed out portion is
The suction nozzle 12 is a portion where the suction nozzle 12 is fitted airtightly. At the center of this hollowed portion, the lower end of a thin-walled tubular member 34 protrudes, and the inside of this protruding portion (inner peripheral portion) 39 becomes the downstream end of the suction passage 31. The outer peripheral surface is a mounting portion of the air filter 16. That is, the peripheral wall 38 and the projecting portion 39
And the base 33 of the suction nozzle 12
And the air filter 16 are accommodated.

Each of the gripping arms 37 is rotatably supported by a support block 36 via a pin 40 at an upper and lower intermediate portion thereof, and is attached by a compression spring 41 provided between the support arm 36 and the upper portion. By being urged, the lower part is turned to the suction nozzle 12 side. Each gripping arm 37
A roller 42 abutting on the suction nozzle 12 is attached to a lower portion of the support block 3. The rollers 42 of the two gripping arms 37, 37 urged by the compression spring 41 are attached to the support block 3.
The suction nozzle 12 attached to the nozzle 6 is gripped. In this case, both rollers 42, 42
The suction nozzle 12 is held in contact with the upper slope portion of the neck portion 43 so as to attract the suction nozzle 12 upward.

The suction nozzle 12 has a base 33 having a nozzle hole 32 formed in an enlarged shape, and a neck 43 connected to the base at a lower side.
And a flange portion 44 provided below the neck portion 43, and a straight portion 45 extending downward from the neck portion 43 through the flange portion 44. The lower end of the straight part 45 is a part for sucking an electronic component, and the flange part 44 is
2 is a part to be seated on the nozzle stocker 13. In addition, the neck 43 is connected to the suction nozzle 1 as described above.
Reference numeral 2 denotes a portion to be gripped by the gripping mechanism 35.

On the other hand, the base portion 33 accommodates the air filter 16 inside thereof, and has a chamber portion 46 connected to the suction passage 31 of the head main body 15 through the air filter 16. Peripheral wall 38
Is formed on the inner peripheral surface thereof. That is, the inner peripheral surface of the peripheral wall 38 formed so as to penetrate into a truncated cone shape and this tapered portion are formed in a complementary shape. The suction nozzle 12 is airtightly mounted on the head main body 15 with the peripheral surface and the tapered portion in close contact with each other.

The air filter 16 includes a filter body 51 formed in a cylindrical shape and a filter holder 52 having the filter body 51 mounted on the outer peripheral surface. The filter holder 52 is formed in the shape of a cap with a bottom. The inner peripheral surface of the filter holder 52 is attached to the projecting portion 39 of the tubular member 34, and the filter main body 51 is attached to the outer peripheral surface. An O-ring 53 is incorporated in the upper inner peripheral surface of the filter holder 52, and the filter holder 52 is airtightly mounted on the protruding portion 39. The O-ring 53 also serves as a locking member for the air filter 16 by engaging with a groove formed in the projecting portion 39.

Further, a plurality of through holes 54 are formed in the upper and lower middle portions of the filter holder 52, and the plurality of through holes 54 are formed in a plurality of small holes 39 a formed in the projecting portion 39.
Is in communication with In this case, the plurality of through holes 54 and the plurality of small holes 39a are respectively arranged at equal intervals in the circumferential direction. In addition, on the outer peripheral surface of the filter holder 52,
An annular groove 55 connecting the plurality of through holes 54 is formed. In this configuration, the suction air in the chamber portion 46 passes through the filter main body 51 and flows into the suction passage 31 through the annular groove 55, the through hole 54, and the small hole 39a.
Reference numeral 56 in the figure denotes a locking projection formed at the lower end of the filter holder 52 (details will be described later).

Next, referring to FIG. 3, FIG. 4 and FIG.
A procedure for replacing (mounting) the air filter 16 will be described. The mounting head 9 is supported by a head elevating mechanism (head moving mechanism) 21 mounted on the XY stage 8, and is moved up and down by the head elevating mechanism 21. On the other hand, the air filter 16 is set in a filter attaching / detaching mechanism 22 provided in the filter stocker 14. In these figures, two filter attaching / detaching mechanisms 22 and 2 are provided, one in which a replacement air filter 16a is set and the other in which a used air filter 16b is received from the mounting head 9.
2 are provided.

Each filter attachment / detachment mechanism 22 includes a set table 23 on which the air filter 16 is set, and an air filter 1
6 which are engaged with the retaining projections 56 of the retaining member 6 and retain the retaining projections 56.
4 and a driving unit 25 for locking and releasing the holding claws 25. Also, the head lifting mechanism 21
The filter attaching / detaching mechanism 22 is connected to a controller 26. The controller 26 controls the driving of both mechanisms 21 and 22 to automatically replace the air filter 12 (details will be described later).

FIG. 3 shows the used air filter 16b.
Represents an operation of leaving the. In this case, the suction head 9
Has already released the suction nozzle 12 above the nozzle stocker 13. The air filter 16a is set in the filter attaching / detaching mechanism 22 on the right side in the figure, but the air filter 16 is not set in the filter attaching / detaching mechanism 22 on the left side. Further, the holding claws 24 of the right filter attaching / detaching mechanism 22 are in the locked state, and the holding claws 24 of the left filter attaching / detaching mechanism 22 are in the unlocked state.

From this state, the mounting head 9 approaches the left filter attaching / detaching mechanism 22 from above, and the air filter 16
b hits the set table 23 (actually stops immediately before)
At the same time, the lowering of the mounting head 9 stops, and at the same time, the holding claw 24 performs the locking operation so as to hold the locking projection 56. Next, the mounting head 9 is raised, and the air filter 16b is left on the set table 23. Subsequently, as shown in FIG. 4, the mounting head 9 moves to a position immediately above the filter attaching / detaching mechanism 22 on the right side, and then descends again. When the protruding portion 39 of the mounting head 9 is deeply inserted into the air filter 16a by this lowering, the mounting head 9 stops and at the same time, the holding claws 24 perform an unlocking operation. When the air filter 16a is mounted on the mounting head 9 in this manner, the mounting head 9 rises again and continues to pick up the suction nozzle 12, as shown in FIG.

As described above, since the air filter 16 can be automatically replaced similarly to the suction nozzle 12, the air filter 16 can be replaced without stopping the operation of the electronic component mounting apparatus 1. . For this reason, the replacement operation of the air filter 16 can be incorporated into a series of component mounting operations, and this replacement operation does not significantly affect the tact time in component mounting.
Further, the structure for automatic replacement can be simplified.

The air filter 16 is connected to the suction nozzle 1
2 is provided at the lower end of the head body 15, which is the mounting portion, so that the head body 15 can be easily attached and detached, and the management of the air filter 16 and the suction nozzle 12 as in the case where the suction filter 12 is provided. It doesn't get complicated. In addition, dust does not adhere to or clog the suction passage 31 of the head main body 15 or a vacuum conduit leading to the vacuum suction device, and a reduction in suction performance can be prevented. On the other hand, the filter body 51 of the air filter 16 is
Because it is arranged on the outer peripheral surface of the projecting portion 39,
The effective area of the filter body 51 can be widened.

The air filter may be manually attached and detached (replaced) instead of automatically. The replacement of the air filter may be performed periodically based on time, days, weeks, months, and the like, or may be performed based on, for example, a detection value of a vacuum detection sensor provided on the vacuum suction device side. May be performed. Further, the present invention is also applicable to a mounting head of a high-speed chip mounter described in the prior art.

[0035]

As described above, according to the mounting head of the present invention, the management of the air filter itself is facilitated and the air filter can be easily replaced. Further, the air filter can be provided at a position where the effect of dust removal is best exhibited, and the dust can be efficiently removed.

Further, according to the electronic component mounting apparatus of the present invention, since the air filter can be automatically replaced, it is possible to reduce the labor and time loss for the replacement.

[Brief description of the drawings]

FIG. 1 is a plan view of an electronic component mounting apparatus on which a mounting head according to an embodiment of the present invention is mounted.

FIG. 2 is a cross-sectional view of the mounting head according to the embodiment.

FIG. 3 is a cross-sectional view illustrating an automatic air filter replacement procedure (1).

FIG. 4 is a cross-sectional view illustrating an automatic air filter replacement procedure (2).

FIG. 5 is a sectional view showing an automatic air filter replacement procedure (3).

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 electronic component mounting device 2 mounting main body 9 mounting head 12 suction nozzle 14 filter stocker 15 head main body 16 air filter 21 head lifting / lowering device 22 filter attaching / detaching device 31 suction passage 32 nozzle hole 33 base 38 peripheral wall 39 projecting portion 51 filter main body 52 filter holder 54 through hole 55 annular groove

Claims (5)

[Claims] 1. An electronic component comprising: a head main body having a suction passage formed therein; and a suction nozzle detachably mounted at a lower end portion of the head main body and having a nozzle hole formed in a shaft and communicating with the suction passage. The mounting head according to claim 1, wherein an air filter is detachably provided at an upstream end of the suction passage. 2. A lower end portion of the head main body has an inner cylindrical portion forming an upstream end portion of the suction passage, and an outer cylindrical portion to which a base of the suction nozzle is mounted. 2. The mounting head for an electronic component according to claim 1, wherein the mounting head is mounted on an inner cylindrical portion. 3. The air filter includes a filter body formed in a cylindrical shape, and a bottomed filter holder that is hermetically mounted on the inner cylinder portion on an inner peripheral surface and has a filter body mounted on an outer peripheral surface. The mounting of the electronic component according to claim 2, wherein the filter holder has a plurality of through-holes, one end of which is open to the outer peripheral surface and the other end of which is communicated with the suction passage. head. 4. The mounting head according to claim 3, wherein an annular groove connected to the plurality of through holes is formed on an outer peripheral surface of the filter holder. 5. An electronic component mounting apparatus comprising the electronic component mounting head according to claim 1, wherein a head moving mechanism for moving the mounting head and the air filter can be held. An electronic component mounting apparatus, comprising: a filter attaching / detaching mechanism configured to relatively approach the mounting head from which the suction nozzle has been detached and to attach / detach the air filter to / from the mounting head.