JPH11340687A - Component feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid breaking a component due to a shock exerted on a chip component, when a vacuum nozzle takes the separated chip component out. SOLUTION: A chip component 4 housed from a chute outlet into a trench arrives as a chip chucking station as a rotor 35 rotates, the component 4 at this station abuts on a lowering vacuum nozzle 14 which lowers to absorb the butt shock, while a knock rod 71 pressed upwards by a compression spring 75 supports the component 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of arranging chip components stored in a loose state in a chip component storage chamber along a chute communicating with a lower portion of the storage chamber. The present invention relates to a component supply device that supplies a component to a component extracting position.

[0002]

2. Description of the Related Art This kind of parts supply apparatus is disclosed in
This is disclosed in Japanese Patent No. 8594, in which loose chip components are aligned along a chute, supplied to a component take-out position, and sucked by descending a suction nozzle.

[0003]

However, in the above-mentioned prior art, the chip component is placed on a fixed mounting portion made of metal or the like at the component take-out position, and the suction nozzle which descends does not contact the chip component. Because of the contact and suction, a shock is applied to the chip component at the time of contact.

[0004] The components are in a loose state, and the impact upon contact of the suction nozzle is directly applied, so that some components may be damaged by the shock. Further, with the recent increase in the speed of component mounting tact, the speed at the time of contact of the suction nozzle has also tended to increase, and the possibility of damaging the component has been increasing.

It is an object of the present invention to prevent a component from being damaged by a shock applied to the chip component when a suction nozzle takes out a chip component.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a chip component stored in a chip component storage chamber in a loose state is aligned along a chute communicating with a lower portion of the storage chamber, and a suction nozzle descending. In a component supply device for supplying the chip component to a component pick-up position, an impact absorbing member is provided for absorbing a shock when the suction nozzle comes into contact with the chip component while supporting the component.

[0007] With this configuration, the shock when the suction nozzle comes into contact with the component is reduced.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

In FIG. 2, (1) is an X-axis motor (2)
And an XY table that moves in the XY directions by rotation of a Y-axis motor (3), on which a printed circuit board (5) on which chip-shaped electronic components (4) (hereinafter referred to as chip components or components) are mounted is placed. You.

Reference numeral (6) denotes a supply table, which is a tape feeder (7) for supplying chip parts (4) sealed in a tape (not shown) and chip parts (4) stored in a loose state.
, A large number of bulk cassette feeders (8) are provided. (10) is a supply stand drive motor,
By rotating the ball screw (11), the supply table (6) is connected to the linear guide (1) via a nut (not shown) fitted to the ball screw (11) and fixed to the supply table (6).
It is guided by 2) and moves.

(13) is a turntable which rotates intermittently. A suction nozzle (1) is provided at the outer edge of the table (13).
The mounting heads (15) having four (4) are arranged at equal intervals in accordance with the intermittent pitch.

The stop position of the mounting head (15) in which the suction nozzle (14) sucks and picks up the component (4) from the tape feeder (7) or the bulk cassette feeder (8) is a suction station, and turns at the suction station. The suction nozzle (14) located on the outermost side of the table (13) descends to suck the component (4).

The position in the horizontal plane at which the suction nozzle (14) sucks the component (4) is hereinafter referred to as a component suction position.

The position at which the mounting head (15) stops next to the suction station due to the intermittent rotation of the turntable (13) is a component presence / absence detection station, where a suction nozzle is provided by a component presence / absence detection device (16). The presence or absence of the component (4) to which (14) is sucked is detected.

The position where the mounting head (15) stops next is the recognition station, where the component recognizing device (17) recognizes the displacement of the component (4) to be sucked by the suction nozzle (14). .

The next mounting head (1) of the recognition station
The stop position of 5) is the angle correction station, and the suction nozzle (1) is based on the recognition result by the recognition device (17).
4) is rotated in the θ direction by the nozzle rotation roller (18), and the positional deviation of the rotation angle of the component (4) is corrected.

The next stop position of the angle correction station is
A mounting station in which a component (4) to be sucked by the suction nozzle (14) of the station is mounted on the printed circuit board (5).

The stop position of the mounting head (15) due to the intermittent rotation of the turntable (13) immediately before the suction station is the nozzle selection station, and the head (15) is rotated by the head rotation roller (19). Then, a suction nozzle (14) for picking up the component (4) to be supplied next is selected.

Next, the component presence / absence detection device (16) will be described with reference to FIG.

A light emitting section (20) irradiates a light beam to the component (4) sucked by the suction nozzle (14). (2
Reference numeral 1) denotes a light receiving unit provided to face the light emitting unit (20), and receives light emitted by the light emitting unit (20). When the suction nozzle (14) does not suck the component (4), the light emitted from the light emitting unit (20) is received by the light receiving unit (21), and it is detected that the component (4) is not sucked. When the nozzle (14) is adsorbing the component (4), the light emitted from the light emitting unit (20) is blocked by the component and is received by the light receiving unit (2).
It is detected that the component (4) is sucked without receiving light in 1).

Next, the bulk cassette feeder (8) will be described with reference to FIG. 1 and FIGS.

In FIG. 1, reference numeral (23) denotes a locate pin which is fitted into a positioning hole (not shown) of the supply table (6) to position the bulk cassette feeder (8) on the supply table (6). Reference numeral (24) denotes a bulk case for storing the chip components (4) in a loose state, which is detachably mounted on the upper portion of the bulk cassette feeder (8). The part (4) in the bulk case (24) falls through the first chamber (25) and the second chamber (26), and the chute (27)
Line up within.

(29) is a chamber compressed air supply hole provided in the lower part of the second chamber (26), and (30) is a chute compressed air supply hole provided on the inlet side of the chute (27). The two supply holes communicate with a valve (31), and when compressed air is supplied by opening and closing the valve (31), compressed air ejected from the supply hole (29) accumulates in the second chamber (26). Chip components (4)
Is blown off at the chute (27) inlet so that the compressed air ejected from the supply hole (30) is blown by the part (4) aligned in the chute (27).
Acts to move to the exit side of 7).

Reference numeral (32) denotes a vacuum suction hole provided in the chute (27) so as to suck the lower surface of the component (4), and vacuum suction is always performed. The compressed air supplied from the chute compressed air supply hole (30) is sufficient to move the part (4) to be stopped by the vacuum suction of the suction hole (32) to the chute (27) outlet side. Has pressure.

At the outlet of the chute (27), grooves (34) for the parts (4) to enter at 90 ° intervals as shown in FIG.
Is provided with a notched rotor (35). The width in the rotation direction of the rotor (35), which is the frontage of the groove (34), is slightly wider than the width of the component (4). The part (4) guided inside the chute (27) is the chute (2).
In the groove (34) located at the outlet of (7), it is pushed and stored by the subsequent part (4). The part (4) has a groove (34).
When the rotor (35) rotates, it is slid and moved on the mounting surface (36). Therefore, the mounting surface (36) is formed with a small friction so that the component (4) moves smoothly, and is a metal surface in this embodiment. (If it can be moved smoothly, it may be formed of plastic or the like.) When the component (4) is supplied into the groove (34), the component (4) moves in the clockwise direction of FIG.
By rotating and stopping by 0 degrees, the leading part (4) is separated from the part (4) in the chute (27) and separated into the next groove (3).
4) is located at the outlet of the chute (27), so that the part (4) is likewise fed into the groove (34).

The opening and closing of the valve (31) is performed by rotating the rotor (3).
5) Synchronized with the intermittent rotation, the groove (34)
Stops at the outlet of the chute (27) and then the valve (3
1) is opened, the part (4) is pushed out, and the rotor (35) is closed before starting to rotate.

Next, after the chip components (4) accumulated in the second chamber (26) are blown off as described above,
A mechanism for applying vibration by hitting the bulk cassette feeder (8) from the upper side so as to be aligned in the chute (27) without being trivial will be described.

The mechanism is provided on the main body side of the component mounting apparatus according to the present embodiment. Here, the main body side of the component mounting apparatus is an apparatus main body other than the tape feeder (7) and the bulk cassette feeder (8) of the above-described apparatus.

In FIG. 4, reference numeral (37) denotes a striking bar cam which is rotated by a drive source (not shown) for driving the turntable (13), and which is provided on a lever (39) swinging around a support shaft (38). The provided cam follower (40) is supported. A hitting rod (42) is supported on a support shaft (41) provided on the lever (39), and the lever (39) is urged downward by a spring (43). (44) is a guide for guiding the vertical movement of the hitting bar (42). The cam (37) is set to one for each intermittent rotation of the turntable (13).
Rotating, the striking rod (42) strikes the feeder (8) when the valve (31) is opened to assist in eliminating the clogging of the chip component (4).

As shown in FIG. 17, in the tape feeder (7), a swing arm (not shown) swings each time the feed lever (62) reciprocates, and a sprocket (not shown) is rotated via a sprocket rotation mechanism (not shown). 94) intermittently feeds a tape (95) enclosing the chip component (4), and the component (4) is taken out by the suction nozzle (14). ) Is covered with a cover tape (96) so that the component (4) can be taken out from the suction nozzle (14) via the suppressor (97) through the suppressor (97). (98). The hitting rod (42) is peeled off from the surface of the tape (95) while the cover tape (96) is peeled off by the rotation of the peeling reel (98) as shown in FIG. Cover tape not wound on (98) (9
It is also used to keep the cover tape (96) slack by pushing the predetermined position of 6) downward and moving upward when the rotation of the reel (98) is completed. This cover tape (9
By creating a slack in 6), the cover tape (96) overlying the chip component (4) that is next attracted when the tape (95) is next fed by the sprocket (94),
The component (4) does not fly out until the component is sucked by the suction nozzle (14).
Then, in a state where the lowered nozzle (14) slightly presses the folded portion of the cover tape (96) and the hitting bar (42) presses the cover tape (96) as described above, the peeling reel (98) is used. ), The cover tape (96) is wound up, and the nozzle (14) sucks and takes out the chip component (4).

Next, a mechanism for rotating the rotor (35) in the bulk cassette feeder (8) will be described.

In FIGS. 1 and 5 to 8, (46)
Is a rotor shaft on which the rotor (35) is mounted;
7) to be rotatable. The rotor shaft (4
Below 6), a pinion (48) is fitted so as to be rotatable independently of the rotation of the shaft (46), and the upper portion of the pinion (48) is rotated together with the pinion (48). A moving ratchet bracket (49) is fitted.

On the upper part of the ratchet bracket (49), a ratchet wheel (50) that rotates integrally with the rotor shaft (46) is mounted on the shaft (46).
A ratchet (52) attached to a ratchet bracket (49) is engageable with a wheel groove (51) formed at 90 ° intervals around the ratchet wheel (50). Reference numeral (54) denotes a ratchet lock claw, which is urged by a spring (55) to swing and engage with the groove (51) of the ratchet wheel (50) so that the ratchet wheel (50) does not rotate in the reverse direction. I have.

The guide roller (5) is fitted to the pinion (48) to rotate the pinion (48).
6A) and a reciprocating rack guided by the guide body (56B). The rack is constantly urged rightward in FIG. 5 by a compression spring (57), and a cam follower (59) provided on a swing arm (58). ) Restricts the movement to the right. The swing arm (58) can swing about an arm support shaft (60) as a fulcrum, and a tension spring (6).
1) is urged to swing leftward in FIG. Tension spring (61) rather than biasing force of compression spring (57)
Is stronger, the swing arm (58) and the rack (56) are urged leftward in FIG.

The swing arm (58) is connected to a tension spring (6).
The feed lever (62) that swings rightward in FIG. 5 against the biasing force of 1) is, as shown in FIG. 4, a swing arm of the cassette feeder (8) that stops at the component suction position on the main body side. A feed swing lever (65), which is provided at a position where the turntable (58) can swing, and swings by rotation of a feed lever cam (64) driven by a drive source for intermittently rotating the turntable (13), and a tension spring. It moves in the left-right direction of FIG. 4 by the action of (66). The reciprocating operation of the feed lever (62)
This is performed when the bulk cassette feeder (8) or the tape feeder (7) stops at the component suction position every time the turntable (13) rotates intermittently.

The stop position of the groove (34) to which the component (4) is supplied from the chute (27) is hereinafter referred to as a "chip separation station", but at the next stop position rotated 90 degrees from the chip separation station, the groove (34). It is checked whether there is a component (4) in 34), and this stop position is called a "chip presence / absence detection station".

When the bulk cassette feeder (8) stops at the component suction position, a component presence / absence detection sensor (68) is attached to the main body side just above the chip presence / absence detection station as shown in FIGS. The sensor support arm (69) is provided to be attached. The sensor (6
8) uses a reflection type sensor in the present embodiment, and detects the presence or absence of the component (4) by different reflected light depending on the presence or absence of the chip component (4).

The suction nozzle (14) for sucking the component (4) of the suction station is located directly above the chip suction station of the rotor (35), and the sensor (68) is connected to the rotor (3).
4) is located directly above the chip presence / absence detection station of FIG.
The sensor support arm (69) extends inward from the outside of the head (15) as shown in FIG.
Rotation of the sensor (68) and the sensor support arm (6).
The suction nozzle (14) or the head (15) does not collide with 9). The sensor (68) and the sensor support arm (69) are provided at positions where they do not collide with the tape feeder (7) and the cassette feeder (8) even when the supply table (6) moves.

At the stop position of the next groove (34) of the chip presence / absence detection station due to the 90 degree rotation of the rotor (35), the suction nozzle (14) sucks the component (4) in the groove (34). Chip suction station ".

Before the nozzle (14) descends onto the chip component (4), the component (4) is raised by a predetermined amount from the chip component mounting surface (36) by a push-up rod (71) having a damper effect. The push-up bar (71) descends and absorbs the shock that the nozzle (14) hits the component (4). The vertical movement mechanism of the push-up bar (71) will be described.

In FIG. 10, a cylindrical push-up rod (71) formed in a horizontal plane so that the tip easily supports the lower surface of the component (4) is punched on the chip component mounting surface (36) of the chip suction station. Although the provided chip component (4) penetrates through the opening (72) of a size that does not fall, a retaining ring (74) is fixed to the push-up rod (71), and the retaining ring (74) is fixed. ), A compression spring (75) through which the push-up bar (71) penetrates and gives a damper effect to the push-up bar (71).
Is installed.

Reference numeral (76) denotes a push-up lever, which swings up and down when the main body push-up lever (78) moves up and down around the lever support shaft (77). As shown in FIG. 11, the main body push-up lever (78) is provided on the main body side below the component suction position, and is a push-up cam (79) driven by a drive source for intermittently rotating the turntable (13).
As the lever rotates, the lever (78) swings counterclockwise in FIG. 11 around the main body lever support shaft (80) against the spring (81), and is urged by the spring (81). Swings clockwise. The vertical movement of the main body push-up lever (78) is performed in synchronism with the suction operation at each intermittent rotation of the turntable (13).

Even if the lever (78) swings, the tape feeder (7) does not collide with the lever (78) when the tape feeder (7) is stopped at the component suction position. The shape of the tape feeder (7) is formed. The lever (78) pushes up the part (4) enclosed in the tape and pushes up the push-up rod when the tape feeder (7) taken out by the suction nozzle (14) is at the part suction position. Used for

The push-up lever (76) is provided with a push-up rod (7).
1) is engaged with a collar (82) that penetrates and supports the compression spring (75), and the push-up bar (71) is moved up and down by the push-up lever (76) via the compression spring (75). Move up and down. The retaining ring (74) has a collar (82).
When the push-up bar (71) rises and rises, the spring (75) is compressed by the rise of the collar (82) because the push-up bar (71) is brought into contact with and restricted by the retaining ring regulating surface (83). (71) pushes the part (4) to a predetermined height position determined by the mounting position of the retaining ring (74) to the push-up rod (71),
The compression spring (75) stops with a damper effect.

Reference numeral (84) denotes a descending compression spring, which is wound around the retaining ring (74) and the compression spring (75). When the collar (82) rises, the collar (82) and the retaining ring are restricted. Surface (83), and the thrust lever (7
When 6) descends, the collar (82) is pushed down,
In the state where the compression spring (75) is not compressed, the collar (8)
The lower surface of the collar (82) is engaged with the ring (85) fixed to the position of the push-up bar (71) immediately below 2), and the push-up bar (71) is moved from the chip component mounting surface (36). Lower it down.

Next, the mounting position of the push-up bar (71) in the plane direction will be described.

When the push-up rod (71) pushes up the chip part (4), as shown in FIGS.
The opening (72) and the collar allow the center of the push-up rod (71) to pass through a position separated by a distance α from the center line of the groove (34) in the rotation direction of the rotor (35) which is the width direction of 4). (82) is provided. By doing so, the chip component (4) can be constantly pressed against the chip positioning reference surface (86), and the variation in the rotation direction of the groove (34) can be suppressed, and the nozzle (14) can always be kept in the chip component (4). ) Can be adsorbed at a certain position. If the distance α is too large, when the push-up bar (71) pushes up the chip component (4), the component (4) is excessively tilted or even rotated by 90 degrees. Is the suction nozzle (14)
Is inclined to such an extent that it does not hinder the suction of the component (4).

The groove (34) is located on the right side of the groove (34) in FIG. 12 so that the chip component (4) is pushed up at a fixed position not only in the width direction of the groove (34) but also in the front-rear direction perpendicular thereto. The push-up bar (71) may be attached so as to be shifted from the center of the groove, and the chip component (4) may be pressed against the inner surface of the groove (34) on the left side in FIG.

In FIG. 6, the next stop position of the chip suction station in the groove (34) due to the rotation of the rotor (35) is the "sucking chip discharge station". Chip discharge box (8
7) is provided, and the chip component (4) that has not been sucked is dropped and discharged. If not discharged, the chip separation station may catch on the chute (27) or the leading chip component (4) aligned with the chute (27).

Next, a control system of the component mounting apparatus according to the present embodiment will be described with reference to FIG.

(88) is a CPU and a RAM (89)
In accordance with a program stored in the ROM (90) based on various data stored in the ROM, various operations relating to an operation of mounting the chip component (4) on the printed circuit board (5) are controlled. The interface (91) includes a CPU (88), a component presence / absence detection device (16), and a component presence / absence detection sensor (68).
And so on. (92) denotes a CRT for displaying various data such as a suction error of the component (4).

The operation of the above configuration will be described below.

First, the operator operates the feed lever (6) of the bulk cassette feeder (8) before the automatic operation of the component mounting apparatus.
2) is manually pulled and sent, and the chip component (4) is stored in the groove (34) of the chip separation station and the chip presence / absence detection station of the rotor (35). In the chute (27) of each cassette feeder (8), chip components (4) are continuously arranged from the second chamber (26) side to the outlet side.

When the automatic operation is started, the RAM (89)
A tape feeder (7) or a bulk cassette feeder (8) for supplying a component (4) to be sucked next to the suction nozzle (14) according to the mounting data (not shown) stored in the feeding table drive motor (10). Is moved along the linear guide (12) to stop at the component suction position.

At this time, it is assumed that the third bulk cassette feeder (8) from the right in FIG. 2 stops at the component suction position.

Next, the presence / absence of the component (4) of the chip presence / absence detection station is detected by the component presence / absence detection sensor (68). The sensor (68) has the presence of the component (4) as shown in FIG. Is detected. And RAM (89)
Stored therein is the presence of a component as a detection result of the sensor (68) for the bulk cassette feeder (8).

Next, when the mounting head (15) moves to the suction station by the rotation of the turntable (13), the feed lever (62) moves to the right in FIG. The compression spring (57) moves the rack (56) along the guide roller (56A) and the guide body (56B) to swing the pinion (48) to the right side against (61). . As a result, the rotation of the ratchet bracket (49) causes the ratchet (52) to rotate the ratchet wheel (50).
At a position where the ratchet wheel (50) is rotated by 90 degrees, the rack (56) is stopped by a stopper (not shown), and the ratchet wheel (50) stops rotating. At this position, the ratchet (55) is urged by the spring (55) to The locking claw (54) engages with the wheel groove (51) of the ratchet wheel (50). Thus, when the rotor shaft (46) on which the ratchet wheel (50) is pivoted rotates by 90 degrees, the rotor (3) is rotated.
5) rotates 90 degrees, the groove (34) of the chip presence / absence detection station moves to the chip suction station, and the groove (3)
The component (4) in 4) slides on the component mounting surface (36) and moves to the station.

Next, when the feed lever (62) returns to the left side in FIG. 1, the swing arm (58) returns to the pinion (48).
The ratchet (52) also returns to its original position, but does not rotate because the ratchet wheel (50) is locked by the ratchet lock claw (54), and the rotor (35) maintains the rotated position.

Next, the operation of the rotor (35) at each stop station after the rotor (35) stops will be described.

First, in the chip separation station, the operation of storing the chip component (4) in the groove (34) is performed.

That is, the part (4) aligned in the chute (27) is suctioned by vacuum from the vacuum suction hole (32), and the rotation of the rotor (35) starts, and the groove (34) is moved to the chip separation station. No pressure is exerted on the leading component (4) until it is further rotated, but when the rotation of the rotor (35) stops, the valve (31) is opened and the chute compressed air supply hole is opened. Compressed air is discharged from (30) to push the chip component (4) in the chute (27) against the vacuum suction force, and the leading component (4) is extruded and supplied into the groove (34).

On the other hand, from the chamber compressed air supply hole (29), compressed air is simultaneously blown out from the chute compressed air supply hole (30) to remove the chip components (4) accumulated in the second chamber (26). When the valve (31) is closed, the blown part (4) falls, and a part of the blown part enters the chute (27). The part (4) that has entered the chute (27) has an air supply hole (3).
Since the component (4) is lost between the inlet of the chute (27) and the supply hole (30) by the compressed air from 0), the chute (27) slides down by its own weight and is aligned with the chute (27). To prepare for the discharge of compressed air when the next rotation of the rotor (35). At this time, after the completion of the discharge of the compressed air, the vacuum suction hole (32) sucks and closes the component (4) located thereon, and does not suck the other component (4).

When the valve (31) is opened,
The lever (39) is urged by the spring (43) to swing downward by the rotation of the hitting bar cam (37), and the hitting bar (42) is guided by the guide (44) to descend to the bulk cassette feeder (8). Hit near the center of the. This vibration promotes the elimination of the clogging of the component (4) in the chute (27) and the second chamber (26). Further, when the valve (31) is closed, the pushing pressure of the part (4) in the chute (27) disappears.

Next, a component presence / absence detection operation performed in the chip presence / absence detection station will be described.

When the rotation of the rotor (35) is stopped, the component presence / absence detection sensor (6)
8) reflects the light rays on the upper surface of the component (4), thereby forming the groove (3).
The operation of detecting the presence or absence of the component (4) in 4) is performed. However, since the component (4) is in the groove (34), the presence of the component is detected, and the result is stored in the RAM (89). .

In the above description, the component presence / absence detection at the chip presence / absence detection station is performed before and after the rotation of the rotor (35). If the operation is performed only before the rotation of the first rotor (35) for each cassette feeder (8) after the start of the automatic operation, the detection is performed at the time of picking up the parts before that, and the result is stored in the RAM (89). So don't do it. Alternatively, only the detection operation before the rotation of the rotor (35) may be performed.

Next, the operation performed in the chip suction station will be described.

After the rotation of the rotor (35) is stopped, the rotation of the push-up cam (79) causes the body push-up lever (7) to rotate.
8) moves upward, and the push-up lever (76) moves the lever support shaft (7).
7) is rotated clockwise in FIG.
Is pushed up against the downward compression spring (84). This pushes up the compression spring (75) which engages on the collar (82), and the snap ring (74) to which the spring (75) is attached.
Is pushed up.

As a result, the push-up rod (71) is connected to the part (4).
The retaining ring (74) rises while pushing up the retaining ring regulating surface (8).
Stop at the position regulated in 3). At this time, since the push-up bar (71) is pushed up by being shifted by α from the center position in the rotation direction of the groove (34) as shown in FIGS. 12 and 13, the part (4) is pushed up by the push-up bar (71). It is pushed up while being pressed against the chip position reference surface (86) opposite to the chip position that is shifted.

In parallel with the push-up operation, the suction nozzle (14) is lowered by a vertical drive means (not shown), contacts the component (4) pushed up by the push-up rod (71), and further descends. And the nozzle (14) is a compression spring (7
The lowering speed is reduced by the damper action of 5), the impact caused by the contact of the nozzle (14) is absorbed, and the component mounting surface is pressed with the component (4) pressed against the chip position reference surface (86). It descends until it comes into contact with (36). After that, the suction nozzle (14) moves upward while sucking a predetermined position of the component (4).

The reason that the component (4) is lowered until it comes into contact with the component mounting surface (36) is to allow the component (4) to be sucked in a stable state in a horizontal direction. If the posture is stable even with the support alone, the component is placed on the component mounting surface (36) in order to avoid an impact when the component (4) comes into contact with the component mounting surface (36) although it is weakened. The nozzle (14) may be raised before the contact.

On the other hand, after the component (4) is sucked, when the body push-up lever (78) descends, the descending compression spring (8)
The ring (85) is pressed against the lower surface of the collar (82) by the urging force of 4), and the push-up bar (71) is forcibly lowered to a position where the rotation of the rotor (35) is not obstructed.

In this manner, a series of operations by rotating the rotor (35) by 90 degrees was performed. Next, the nozzle (1) that sucked the component (4) at the suction station was used.
The mounting head (15) having 4) moves to the component presence / absence detection station by intermittent rotation of the turntable (13).

When the mounting head (15) stops at the station, the component (4) sucked by the suction nozzle causes
As shown in FIG. 3, the light beam emitted from the light emitting unit (20) is blocked and not received by the light receiving unit (21), and the component (4)
Is detected by the component presence / absence detection device (16).

Next, the mounting head (15) stops at the recognition station due to the intermittent rotation of the turntable (13). In this station, the component recognition device (17) recognizes the displacement of the component (4) to be sucked by the suction nozzle (14), and the component is rotated by the nozzle rotating roller (18) at the next stop station, the angle correction station. The displacement of the rotation angle in (4) is corrected.

Thereafter, the component (4) sucked by the suction nozzle (14) is moved to the X-axis motor (2) at the mounting station.
In addition, by the rotation of the Y-axis motor (3), a correction amount for the positional deviation is added, and the Y-axis motor (3) is mounted on the printed board (5) on the moved XY table (1).

On the other hand, when the mounting head (15) holding the component (4) sucked first rotates to the component presence / absence detection station, the next mounting head (15) moves to the suction station.

During the intermittent rotation, in the same manner as described above, a tape feeder (7) or a bulk cassette feeder (8) for supplying a component (4) to be sucked next.
Moves to the suction position of the component (4).
It is assumed that the second bulk cassette feeder (8) stops at the suction position of the component (4).

Then, the presence / absence of the component (4) is detected at the chip presence / absence detection station, the rotor (35) is rotated, and the same operation as described above is performed at each station of the rotor (35). It is. In this manner, the suction of the component (4) is performed at the suction station.
Parts (4) continuously from the same cassette feeder (8)
When the suction is performed, the discharge of the compressed air from the air supply hole (29) is stopped, and the blown-up chip component (4) falls in the second chamber (26) and enters the chute (27). However, if the entry timing is delayed due to entanglement with other parts (4) at the chute (27) entrance or entry after the posture has been corrected, the next air supply hole ( The compressed air is discharged from the second chamber (26) due to the discharge of the compressed air from (30) or cannot enter the chute (27).
The number of parts (4) in 7) is reduced. Once another tape feeder (7) or cassette feeder (8) moves to the component suction position and continuous supply is stopped, the component (4) accumulated in the lower portion of the second chamber (26) remains. Except for the parts that first enter the chute (27), the parts (4) arranged in the chute (27) do not increase in number because they overlap at the entrance of the chute (27) and do not fall. Then, when the cassette feeder (8) stops at the component suction position again and the continuous supply of the component (4) is performed, the component (4) in the chute (27) decreases again. When the parts (4) are reduced to a state where the parts (4) are not aligned only at the outlet side of the chute (27) than the position of the vacuum suction hole (32), the discharge of the compressed air from the air supply hole (29) is stopped. Thereafter, the suction force acts on the part (4) soared in the second chamber (26), so that the part (4) falls earlier than falling by its own weight, enters the chute (27), and enters the chute (2).
Even in the case of 7), since it descends earlier than falling under its own weight, it is aligned without being passed back through the air supply hole (30) before discharge of compressed air from the next air supply hole (30) starts. Therefore, the part (4) in the chute (27) does not decrease any more, and the supply of the part (4) is performed.

As described above, the supply of the chip component (4) and the mounting of the chip component (4) on the printed circuit board (5) are performed. The cassette feeder (8) moves to the suction position of the component (4), and the groove (3) where the presence of the component is detected is detected.
From 4), the suction operation of the component (4) by the suction nozzle (14) is performed. When the head (15) rotates intermittently, the presence / absence of the component (4) sucked by the suction nozzle (14) is detected by the component presence / absence detection device (16).

As a result, when the absence of the component (4) is detected, the CPU (88) determines that there is a suction error based on the presence of the component (4) by the sensor (68) stored in the RAM (89). Then, in a predetermined area in the RAM (89), FIG.
No. of the bulk cassette feeder (8)
The date and time when the suction error occurred are stored for each case, along with the number "M1" of the mounting head (15) and the number "N1" of the nozzle (14). When the cassette feeder (8) is stopped at the component suction position and the rotor (35) is rotated to supply the next component (4), the chip component (4) which has not been sucked is picked up incorrectly. Is dropped into the chip discharge box (87) and discharged.

In this way, the suction error may be stored, and the apparatus may be stopped when the suction error of the same bulk cassette feeder (8) or the number of the same mounting head (15) has exceeded the set number. In that case CR
The screen at T (92) may display that the stop is due to a suction error. However, it is necessary to set a time point at which the count of the suction error is started.

Next, one bulk cassette feeder (8) on the supply table (6) moves to the component suction position, and the component (4) is placed in the groove (34) of the chip separation station in the chute (27). If the part (4) is not supplied due to, for example, blockage, the rotor (35) rotates and the groove (34)
Stops at the chip presence / absence detection station, the component presence / absence detection sensor (68) detects the absence of the component (4). Then, the result is stored in the RAM (89) as a supply error, for example, by storing the cassette number "R2", date and time as shown in FIG.

The data in FIG. 16 and the data in FIG. 15 described above are stored as management data in the RAM (89) not only during the automatic operation but also when the operation is stopped. It can be displayed in (92) and used for maintenance and inspection of the device.

Next, as described above, the sensor (68)
Detects that there is no component (4), the mounting head (15) stopped at the nozzle selection station selects the suction nozzle (14) to be used next by the head rotating roller (19), Since the component (4) to be sucked next has been determined, the component (4) to be sucked is sucked for the head (15). When the sensor (68) detects the absence of the component (4), the head (15) stopped at the nozzle selection station that has not yet been prepared to suck the component (4) is turned to the suction station. When moving, the cassette feeder (8) in which the sensor (68) detects the absence of the component (4) is moved to the component suction position, and the feed lever (62) is operated without lowering the suction nozzle (14). Then, the rotor (35) is rotated.

When the sensor (68) detects the presence of the component (4) in this way, the normal operation is started from the next head (15), but the suction nozzle (14) is not lowered. With respect to the head (15), the operation of each station up to the mounting station is not performed thereafter.

In this case, when the absence of the component (4) is detected again, it is stored in the RAM (89) in the same manner as in FIG. 16, and the suction operation of the component (4) is not performed again. Then, the rotor (35) is rotated. Then, when the third absence of the component (4) is detected for the same cassette feeder (8), the apparatus stops.
On the CRT (92), "supply mistake" is displayed together with the number of the cassette feeder (8) and the fact that the sensor (68) has detected the absence of the component (4).

If the detection of absence is repeated three times for the same cassette feeder (8), the possibility of running out of parts is large. Therefore, the display of running out of parts is displayed on the screen of the CRT (92) simultaneously or only. You may do. Or
Other possible causes, such as clogging in the shoot (27), may be listed and displayed. Alternatively, the number of detections of the absence of a component to be stopped may be set. The counting of the detection of the absence of the component (4) for stopping the apparatus by the sensor (68) can be started after stopping once for the same cassette feeder (8), or the operator can set it. You should do so.

Further, the absence of the component (4) is detected, and
The component (4) to be sucked by the next head (15) is the component (4) supplied from the same cassette feeder (8).
In the case of (1), the nozzle (14) of the head (15) is not lowered and only the rotation of the rotor (35) is performed, and the selection of the nozzle (14) of the next head (15) is performed by the cassette feeder (8). ), And the part (4) may be taken out. Then, as for the nozzle (14) to suck the component (4) of the groove (34) in which the absence of the component (4) is detected, the detection device (16) at the component presence / absence detection station of the turntable (13). Is not performed.

If the swing arm (58) of the bulk cassette feeder (8) is not manually fed before automatic operation, the sensor (68) initially detects the absence of the component (4). If the re-rotation operation of the rotor (35) is performed as described above, no problem occurs.
In (89), the detection result of no component need not be stored as management data.

Further, even if the swing arm (58) is not sent by hand, if the cassette feeder (8) is newly installed or replaced after running out of parts, if the operation is started, the nozzle ( Before starting the suction operation of components by 14), the turntable (13) is rotated and the feed lever (62) is operated without lowering the nozzle (14), and the swing arm of the new cassette feeder (8) is operated. The part (4) may be sent to the chip presence / absence detection station of the rotor (35) by swinging (58) and rotating each rotor (35) once. This is effective even when the sensor (68) is not provided.

Further, if a drive source for driving the feed lever (62) is provided independently of the turntable (13), if the absence of the component (4) is detected by the sensor (68), If the feed lever (62) is driven again without rotating the turntable (13), the rotor (35) can be rotated.

In the present embodiment, the sensor (68) is provided above the chip presence / absence detection station in the groove (34) of the rotor (35). However, the sensor is provided below the station in the cassette feeder (8). A reflection-type sensor is provided, or a light-emitting device and a light-receiving device are provided below the station of the cassette feeder (8) and at the position of the sensor (68), and the presence or absence of the component (4) is detected by transmitted light. You may.

Further, in the present embodiment, the grooves (34) of the rotor (35) are provided at four positions every 90 degrees, and the chip presence / absence detection station is located at the rotation stop position of the rotor (35) next to the chip separation station. However, if the rotor is provided with five or more grooves for accommodating components, or even four, if the position of the mis-sucking chip discharge station of the present embodiment is used as the chip suction station to suction the component (4),
The presence or absence of a component may be detected at an arbitrary stop position between the chip separation station and the chip suction station.

Further, the presence or absence of the component (4) is detected immediately after the supply of the chip component (4) at the chip separation station, or the detection is performed immediately before the component (4) is sucked at the chip suction station. You may make it. Further, a sensor is provided at an arbitrary position where the groove (34) between the chip separation station and the chip suction station moves to detect the presence or absence of the component (4) in the groove (34) in the middle of moving without stopping. You may do so.

In this embodiment, the vacuum suction hole (32) is provided after the chute compressed air supply hole (30) in the traveling direction of the component (4) in the chute (27). Is reversed, the part (4) aligned on the chamber side (the left side in FIG. 1) of the compressed air supply hole moves to the chamber side by the discharge of the compressed air, and then the part (4) in the chamber When moved by its own weight and vacuum suction, it moves to the vacuum suction hole,
The stopping force is applied by the vacuum suction, and thereafter the compressed air suction holes are not aligned, which hinders the supply. However, if the vacuum suction is not performed constantly, but if the falling chip components are sufficiently accelerated, the vacuum suction is performed intermittently in synchronism with the discharge of the compressed air at a timing such that the vacuum is cut off. 3
2) may precede.

It is preferable that the chute compressed air supply hole (30) is close to the second chamber (26) so that the falling part (4) is less likely to return.

Further, in this embodiment, the vacuum suction holes (3
If the part (4) is aligned at the position (2), the hole (32) is closed by the part (4), and the suction force cannot be applied to the falling part (4). But parts (4)
The suction hole (32) is extended not only to the lower surface of the chute (27) but also to one side surface or both side surfaces so as not to block the entire suction hole (32). (26) The downhill speed of the part (4) that falls from (26) may be increased.

The tip surface of the push-up rod (71) for supporting the component (4) is a horizontal surface, but may be formed in a round shape so that the component (4) can be easily pressed against the chip position reference surface (86). In this way, even if the suction nozzle (14) becomes unstable when the suction nozzle (14) sucks the part (4) when the part (4) is being pushed up, the push-up rod (71) can be compressed by the compression spring (75). When the part (4) descends due to the compression of the part and descends to the part mounting surface (36), it is sucked in a stable state.

Further, when the chip component (4) is sucked by the suction nozzle (14) at the chip suction station of the rotor (35), the component (4) is moved by the push-up rod (71) to the component mounting surface (36). ), The impact of the suction nozzle was absorbed by the action of the compression spring (75), but the component (4) was mounted on the chip suction station, and the mounting member supported by the compression spring or the like from below was mounted on the component. Provided separately from the mounting surface (36), when the component (4) is moved by the rotation of the rotor (35), it is formed at the same height as the component mounting surface (36), and the suction nozzle (14) When the abutment comes down against the component (4), the impact may be absorbed while the spring contracts and descends.

In this embodiment, the groove (34) is notched in the entire thickness direction of the rotor (35) so that the chip component (4) falls into the chip discharge box (87) at the suction chip discharge station. If the push-up bar (71) moves upward at the suction station, it is sufficient if a hole through which the bar (71) penetrates is formed. . In this case, the rotor is provided inclined, and the chip is slid on the groove and dropped into the chip discharge box (87) at the chip discharge station where the chip is mis-sucked, or the chip component that has been mis-sucked again without the discharge station. 4) may be used.

[0102]

As described above, according to the present invention, the shock when the suction nozzle comes into contact with the chip component is absorbed and reduced by the shock absorbing member, thereby preventing the chip component from being damaged. it can.

[Brief description of the drawings]

FIG. 1 is a side view of a bulk cassette feeder as a component supply device to which the present invention is applied.

FIG. 2 is a plan view of a component mounting apparatus to which a bulk cassette feeder to which the present invention is applied is mounted.

FIG. 3 is a side view of the component presence / absence recognition device.

FIG. 4 is a side sectional view of the component mounting apparatus at a component suction position.

FIG. 5 is a side view showing a rotor rotating mechanism of the bulk cassette feeder.

FIG. 6 is a plan view near a rotor of the bulk cassette feeder.

FIG. 7 is a plan view of the rotor rotation mechanism of the bulk cassette feeder as viewed from below.

FIG. 8 is a plan view of the ratchet rotating mechanism as viewed from below.

FIG. 9 is a sectional view taken along the line XX of FIG. 6 showing the component presence / absence detection sensor.

FIG. 10 is a side sectional view showing a push-up mechanism of the push-up rod.

FIG. 11 is a diagram showing a mechanism on the component mounting device side for pushing up the push-up bar.

FIG. 12 is a plan view showing a state where a push-up bar pushes up a chip component at a chip suction station.

FIG. 13 is a side sectional view taken along the line YY of FIG. 12, showing a state in which a push-up bar pushes up a chip component at a chip suction station.

FIG. 14 is a control block diagram of the present invention.

FIG. 15 is a diagram showing suction error data.

FIG. 16 is a diagram showing supply error data.

FIG. 17 is a diagram illustrating a state in which the cover tape is peeled off from the tape of the tape feeder.

[Explanation of symbols]

 4 Chip-shaped electronic component (chip component) 14 Suction nozzle 27 Chute 71 Push-up bar (shock absorbing member) 75 Compression spring (shock absorbing member)

Claims (1)

[Claims] 1. A component pick-up position in which chip components stored in a loose state in a chip component storage chamber are aligned along a chute communicating with a lower portion of the storage chamber, and a suction nozzle descending takes out the chip component. A component supply device, characterized in that an impact absorbing member is provided for absorbing the impact when the suction nozzle comes into contact with the chip component while supporting the component.