JPS63174397A - Automatic mounter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to an automatic mounting device for electronic components that automatically mounts chip-shaped electronic components to predetermined locations on a printed circuit board.

(Exp.) Conventional technology A conventional device of this kind is disclosed in Japanese Patent Application Laid-Open No. 61-61500. The rotation of the suction nozzle moves it up and down.

This type of device is required to be faster, and for this purpose, the turntable needs to be made smaller. but,
As the size is reduced, the pitch between the suction nozzles becomes narrower, and accordingly, the vertical movement distance of the suction nozzles by the fixed cam is also restricted and cannot be increased.

Furthermore, if the printed circuit board is large, the components cannot be mounted over the entire area of the circuit board unless the printed circuit board is moved to a position below the turntable. that time,
Since the suction nozzle is moved by a turntable at a relatively high level due to the need to provide a component positioning device, a component detection device, etc., it is necessary to descend from this high position to the level of the printed circuit board, especially at the mounting station.

(c) Problems to be Solved by the Invention In view of the above-mentioned points, the present invention provides an automatic mounting method suitable for use when there is a significant difference in the vertical positional relationship when moving from one work station to the next work station. The aim is to provide the equipment.

(d) Means for solving the problems For this reason, the present invention, as detailed in the embodiments,
A cylindrical cam member (20) having a discontinuous portion and a cam (22) formed over almost the entire circumference, and the discontinuous ends of the cylindrical cam member (20) having different vertical positional relationships; Cams with different vertical positional relationships (
A vertical rail (121) that can be moved up and down so as to be connected to any of the turntables (121) and a turntable (121) that is intermittently rotated.
0) and a chip component (1
The cam (22) is equipped with a suction nozzle (31) for suctioning the cam (5) and is supported by the table (10) so as to be movable up and down, and slides along the cam (22) and has a different vertical positional relationship. ) from one end side of the upper and lower rails (12
1) and a suction head (12) having a roller (24) that can be transferred to the other end side via the suction head (12).

<E) Operation The work stations (D), (E), and (F) are positioning stations, and (G) is a detection station, so as the turntable (10) rotates, the suction nozzle (31) performs positioning. It is moving above the device (19) etc.

At the work station (I>), the suction nozzle (31
) must be rapidly lowered to level 2 as shown in Figure 17. As shown in FIG. 19, the upper cam (22A) of the cylindrical cam member (20) and the upper and lower rails (12
1) is at the same level, the upper roller (24) of the suction head (12) moves onto the upper and lower rails (121), the rails (121) descend, and the rails (12)
1) is connected at the same level as the lower cam (22B>).Then, the roller (24) transfers to the lower cam (22B) and moves to the next station (J),
The rail (121>) rises and the upper cam (22A)
Continuing to.

(f) Example An embodiment of the present invention will be described in detail below with reference to the drawings.

(1) is a base, (2) is a supply conveyor for placing and withdrawing printed circuit boards, and (3) is the supply conveyor (
2) This is a reloading device that reloads the printed circuit board on the XY table (4). The device (3) has one end with a support shaft (
5) and is rotatable while being supported by the rail (
6), said supply conveyor (2)
When the printed circuit board is transported by the
7) (8) rotates about the support shaft (5) and descends, and the device (3) moves to the right in FIG. As a result of this movement, one claw (7) moves the printed circuit board on the XY table (4) to the right and places it on the discharge conveyor (9), and at the same time, the other claw (8) moves the printed circuit board on the XY table (4) to the right. ) on which the printed circuit board on the supply conveyor (2) is placed.

The XY table (4) on which the printed circuit board from the reloading device e (3) is placed is lowered by a drive means (not shown) to the state shown in FIGS. 21 and 22. ), it can move forward, backward, left and right. A turntable (10) is attached to an index unit (11) rotated by a drive motor (not shown) and rotated intermittently. Furthermore, 18 suction heads (12) are provided at equal intervals around the periphery of the table (10) so as to be movable up and down. (13
) is a component supply table that can be moved along a horizontally long rail (14), and a tape (16) for storing chip components (15), which are chip-shaped electronic components, at equal intervals is wound around a reel (17). A tape supply unit (supply means) (1) configured to feed out the tape (16) at each arrangement pitch.
8) are installed in parallel. (19) is a chip component (15
) is a positioning device for positioning before mounting (mounting) on the printed circuit board. In addition, the XY table (4
) is lowered to lower the turntable (10).
It is possible to move in the X-axis direction and the Y-axis direction below the positioning device (19) (see FIG. 23).

Next, based on FIGS. 5 and 6, the turntable (
10) and suction head <12) will be explained in detail. (2
0) is an index unit (
This is a hollow cylindrical table guiding cylindrical cam member that is suspended and fixed to the mounting base (IIA) of 11). The cam member (20) has a cam (22
) is completely formed, and a roller (24) as a sliding part provided at the upper end of each suction head (12) is pressed against the upper surface of the cam (22) by a spring (23) and rotates. ) Each suction head (12) rotates together with the turntable (10) while moving up and down. That is, each suction head (12) has a pair of guide rods (2
5) is vertically movably penetrating through the turntable (10) and is erected, and a mounting member (26) on which a roller (24) is rotatably mounted is fixed to the upper end of the wire rod (25). Therefore, each suction head (12) has a turntable (10
) is supported so that it can move up and down.

Next, the suction head (1) rotates together with the turntable (10) while moving up and down with respect to the turntable (10).
2) will be explained in detail. First, the cylindrical body (27) is rotatably held via an inner bearing (29) in the upper and lower blocks (28), and a gear (27) with teeth formed on the circumferential side integrated with the cylindrical body (27) is attached. 30) is rotated by meshing with an external drive mechanism (not shown).(31)
An intake passage (32) communicating with a vacuum pump as a vacuum source (not shown) is formed inside, and a chip component (15) is formed at the lower end.
The nozzle (31) is guided by a ball bearing (33) and is movable vertically and rotatably. Further, the upper end of the nozzle (31) has an upper surface opening (
34) It has a built-in dust removal filter (35) that can be put in and taken out, and a space (36) is provided below the filter (35).
) is fixed to the filter case (37). This filter case (37) may be formed integrally with the suction nozzle (31). Reference numeral (38) denotes a filter storage section that is detachably attached to the upper part of the cylindrical body (27), and the inside is hollow to form a storage chamber (40) for the filter (35) and the spring (39).

Therefore, when replacing the filter (35), it is sufficient to remove the filter housing part (38) from the cylindrical body (27) and take the filter (35) in and out from the top opening 34>.

A spring receiver (41) for fixing the upper end of a spring (39) is rotatably provided at the upper end of the storage chamber 40), and the spring (39) urges the nozzle (31) downward. There is. The spring (39) acts as a damper when mounting chip components (15) of different heights. Further, although the filter (35) is provided above the suction nozzle (31), it is not limited thereto, and may be provided anywhere as long as it is integrated with the suction nozzle (31), for example, it may be provided at the bottom inside the nozzle.

The cylindrical body (27) is provided with three suction nozzles (31) as described above at each predetermined angle, and the filter housing section (38) is also provided with a storage chamber (40) as described above. Three are formed respectively.

Further, in the circumferential side of the cylindrical body (27), there is a communication chamber (
43) are formed at three locations, and each of the communication chambers (43) communicates with the storage chamber (40) via a communication path (44). Therefore, only one suction nozzle (31) is connected to the storage chamber (4).
0), and is connected to the hose (42) via a communication path (44) and a communication chamber (43). The other two suction nozzles (31) that do not perform suction operation are pushed upward by the flange surface (47) pushed up by the presser lever (46) which is biased upward by the spring (45). It's been raised. 48) is a retaining member for pushing down the lever 46).

Next, a rotation device for rotating the suction nozzle (31) itself will be described. A rotating roller (50) is brought into pressure contact with a protrusion (51) formed on the cylindrical side of the suction/young nozzle 31) from the outside, and the rotating roller (50) is moved from the drive motor (52) via a belt (53). By rotating the nozzle (3
1) will be rotated by a predetermined angle.

Next, based on Figures 8 and 9, the connection switching device (49)
This will be explained in detail below. A lever (55) that can swing around the bottle (54) is engaged between the teeth of a gear (30> provided on the cylindrical body (27)) to rotate the cylindrical body (27).
7) and a claw (56) that prevents rotation of the hose (42).
) is integrated.

(58) is a suspension body, which includes the suspension body (58) and the lever (
A spring (59) is provided between the wind (55) and the wind (55).
6) is constantly biased so that it meshes with the gear (30).

The end of the joint (57) is a reduced diameter part, and a stone bar (60) is provided at the step part,
A seal backing (61) serving as a ring-shaped or cylindrical sealing member is wrapped around the reduced diameter portion so that its end abuts against the stopper (60).

Therefore, when the claw (56) is biased by the spring (59) and meshes with the gear <30, the backing (
61), the joint (57) and the communication chamber (43) communicate with each other so that no vacuum leak occurs.

In addition, when connecting the joint (57) to another communication chamber (43), the lever (55) is rotated by a drive mechanism (not shown) to connect the joint (57) and the claw (56).
) are separated from the cylindrical body (27) and the gear (30), respectively, and the cylindrical body 27) becomes able to rotate (see Fig. 9).Of course, the opening of the communication chamber (43) of the cylindrical body (27) The end face has a circular shape, and the opening edge thereof is formed into a planar shape.

On the other hand, to explain the structure of the other end of the hose (42), the other end of each hose (42) is connected to the turntable (
10), and the connecting hose <62) is connected to the switching valve (63>, the horizontally elongated intake passage <64), and the central intake passage (65) of the cylindrical body 27).
) to a vacuum pump (not shown).

Next, based on FIGS. 10 and 11, the switching valve (63
) will be explained in detail. The valve stem (66) is slidably attached to a bearing body (67), and a valve body (68) is attached to the tip of the valve stem (66). In the state shown in Fig. 10, the valve body (68) is moved by the spring (69) to the turntable (
The end opening of the horizontally elongated intake path (64) of 1O) is closed to cut off the vacuum circuit by the vacuum pump. The valve stem (66) is provided with an atmosphere communication passage (70) that does not penetrate through the valve body 68), and the communication passage (70)
) is provided with a side hole (71) on the side near the valve body (68), allowing communication between the valve chamber (72) and the atmosphere. That is, when the valve body (68) closes the intake passage 64), the valve chamber (72) is connected to the atmosphere via the side hole (71) and the communication passage (70), and the valve body (68) closes the intake passage 64). When the intake passage (64) is opened, the side hole (71) is closed by the bearing body (67) and a vacuum circuit can be formed.A collar (73) is attached to the other end of the valve body (66). One end is pink 7
4), the third lever (7) is pivotally supported and becomes swingable.
5) The other end side and the collar (73) can be in contact with each other. The approximately U-shaped second lever (76) is pivotally supported by a pin (77) at its middle portion and is swingable, and has rotatable rollers (78) (79) at both ends. is provided. Then, by swinging the second lever (76) by a drive source (not shown), one of the rollers (78)
) can be engaged with the first recess (8(1)) and the second recess (81) of the first lever (75) beyond the protrusion (82).

In addition, blow high pressure air from the atmosphere side end of the valve stem (66),
It is also possible to forcibly cut off the vacuum circuit to each suction nozzle (31), or even to clean the vacuum circuit.

Next, the positioning device (19) will be explained in detail. The turntable (10) is arranged at each work station (A) to (
R), but positioning stations (D) (E)
(F) has a positioning device! (83), (84), and (85) are provided, respectively. The positioning device (83) has a conventional structure and will be briefly explained, but a belt (89) is stretched between the output shaft pulley (87) of the drive motor (86) and the positioning unit (88). The positioning claw is made rotatable. Positioning station (E) (F)
The positioning devices (84) and (85) will be explained based on FIG. 12 and FIG. 13, taking the device (84) as an example. The positioning device (84> has two positioning units (90) and (91>).
1) is a drive cylinder (9) according to a control device program determined in advance according to the size of the chip component (15).
2>, the suction nozzle (
31) to the position directly below the unit (90) (91).
) is movable. The unit <90) (91
) is rotatably provided with respect to the frame (93),
The frame (93) moves in a straight line when its two pairs of guides (94) abut the guide rails (95) from the sides and slide.

The unit (90>(91>) is the frame (93)
) are arranged with a gap (Ll) at the tip of the unit (90) (91) and the output shaft pulley (97) of the drive motor (96) provided on the frame 93). When the belt (98) is tensioned, the units (90) and (91) can rotate in synchronization with the rotation of the pulley (97). In addition, a line connecting the centers of the units (90) and (91) is parallel to the moving direction of the frame (93) moving along the guide rail (95), and is connected to the drive cylinder (92> Rondo <99). The amount of movement of the frame (93) connected via the member (100) is equal to the distance (L).
a reverse limit stopper (101) fixed to the fixed part of the cylinder tank 92) at the same distance as l);
It is regulated by a forward limit stopper (102). Therefore, the center of the suction nozzle (31) and the positioning unit (
If the centers of the units (90) and 90) are aligned, the drive cylinder (92) will be activated, and if the unit (91) is automatically replaced, the center of the unit (91) will be aligned with the suction nozzle (31).
It will coincide with the center of

Next, the structure of the positioning units (90) and (91) will be explained based on FIG. 14. When the button shear (103) is raised by a cam (not shown), the first opening/closing plate (105) moves to the positioning pawl (106) using the pin (104) as a fulcrum.
Since it rotates in the opening direction, the second opening/closing plate (107) also locks the pin (108) in conjunction with the rotation of the first opening/closing plate (105).
is used as a fulcrum to rotate and open the claw (109). When the pusher (103) descends, both claws (106) (10
9) is closed to sandwich the chip component (15) suctioned by the suction nozzle (31) and position the component (15). There are four positioning claws per unit,
The other pair of claws (112) and (113) have a similar structure for opening and closing. Further, (114) is a stopper which limits the closing direction of the opening/closing plate (105). These positioning claws (106) (109) (112) (113
) is the direction in which the chip component (15) that has been completely suctioned by the suction nozzle (31) is rotated while the turntable (10) is rotating, that is, when the component (15) is mounted on the printed circuit board. The drive motor (
96), and when the suction nozzle (31) descends, positioning is performed only by centering operation.

Furthermore, as shown in FIGS. 15 and 16, most of the chip components (15) have a symmetrical shape, so when the chip component (Is) is rotated 180 degrees and mounted on a printed circuit board, If the suction nozzle (31) is rotated as described above so as to rotate the chip component (15) 180 degrees in advance, the claws (106) (109) (112>
(113) does not need to be rotated while the turntable (10) is rotating.

In this way, when the chip component (15) passes through the positioning stations (D>(E)(F)), the chip component (15) is placed in the positioning unit (88), (90), or (91) at any of the stations.
) (115) and (116), which unit is selected depending on the size and shape of the chip component (15) according to the program of the control device. Furthermore, at stations other than the selected station, the suction nozzle (31) does not descend due to a mechanism not shown, and furthermore, the positioning units that are not selected do not operate.

Next, FIG. 17 shows the vertical displacement of the suction nozzle (31), and the work stations (A), (D), and (E
), (F), and (J), in order to carry out each work, the above-mentioned cam (22) is left behind and the cam (22) is moved up and down. This causes the cam (22) to be attached to the part where the cam (22)
〉 Upper and lower rails that connect or descend (not shown)
This becomes possible by arranging the .

Also, work stations (A), (B), (C), (D
), (E), (F), and (G), chip parts (
15), positioning units (88) and (9
0), (91>, (115), (116) and the above parts (
Photo sensors (117) and (118) as detection means for detecting the presence or absence of 15) and a photo sensor (119) as a detection means that can be swung by a drive motor (120> to detect the suction posture) are attracted. Since it is located below the nozzle (31), the component (15) must be conveyed at a high level. In particular, at the station (J), since the chip component (15) is mounted on the printed circuit board, the suction is carried out right above the printed circuit board. The nozzle (31) must be lowered.

Therefore, at station (I), the vehicle is lowered down to the Z level, and the next station (J) is started from the Z level. Its structure will be explained in detail based on FIGS. 18, 19, and 20. 1st
In Figure 8, from the right, work stations (H), (1)
The roller (24) at the upper end of the adsorption pad (31) that has traveled on the cam 22) from the station (H) due to the rotation of the turntable (<10) is moved onto the upper and lower rails (121). The vehicle is then transferred to the next station (1). Regarding the structure of this upper and lower rail (121),
This will be explained in detail based on FIGS. 19 and 20. Upper and lower rails (
The vertical rail (121) is swingable about the pin (122) and is biased by a spring (123).
A stopper (124) protruding from the shaft (125)
) is in the upper position in FIG. 19. The shaft (125) is moved up and down by a cam drive mechanism (not shown) to move the vertical rail (121> up and down via the pin (122)).

Further, a rotatable roller (126) is attached to the end of the upper and lower rails (121), and a push-down member (127)
When the roller (126) is pushed down, the roller (24) is separated from the upper and lower rails (121) as shown in FIG.

That is, the cam (22) of the cylindrical cam member (20) is interrupted at the portion where the upper and lower rails (121) are disposed, and one end side and the other end side of the interrupted portion are not in the vertical positional relationship. Since there is a significant difference, a vertical rail (121) is provided at the interrupted part to move it up and down. In the state shown in FIG. 19, the cam (22A) located at one end located above and the upper and lower rails (121) are at the same level, and then the roller (24) is moved to the upper and lower rails (121).
1) The upper and lower rails (121) move down together with the shaft (125), and the upper and lower rails (121) become at the same level as the lower cam (22B).

When the roller rough 24) moves onto the lower cam (22B>), it becomes in the station (J) state, but at this time, when the pressing member (127) presses down the roller (126),
As shown in Fig. 20, the upper and lower rails (121) are rotated, and then the rails (121) rise and the upper cams (22A
), and the pressing member (127) also moves above the roller (126). Furthermore, in this embodiment, an example is shown in which the upper and lower rails (121) are used for transferring from above to below, but this is not limited to this, and when there is a difference in the vertical positional relationship, when transferring from below to above. May be used for.

In this embodiment, the chip component (15) is
Press with 06>(109)(112)(113),
Position in the X-axis direction and Y-axis direction, and drive the drive motor (96
), the positioning in the 0 direction is performed via the belt (98), but the present invention is not limited to this; for example, by optically detecting the position of the chip component (15) and rotating the suction nozzle 31), The positions in the axial direction and the Y-axis direction may be determined, and the position in the θ direction may be determined using the XY table (4).

The operation of the above configuration will be explained below.

First, when the printed circuit board placed on the supply conveyor (2) is conveyed and reaches a position below the reloading device (3), the conveyor (2) stops. And the spindle (5)
The pair of feed claws (7) and (8) rotate downward using the fulcrum, and the right claw (7) is attached to the left end of the printed circuit board on the XY table (4). It engages with the left end of the printed circuit board conveyed by the conveyor (2). By moving along the rails (6), the replacement device (3) transfers the substrate from the supply conveyor (2) to the XY table (4), and also transfers the substrate on the table (4) to the discharge conveyor. (9) and moves to the right by the conveyor (9).

Then, the printed circuit board is positioned on the XY table <4) by a positioning device (not shown), and the reloading device (3) raises the feed claws <7) <8) to
) to return to the original position. In addition, the XY table (4) is lowered by a drive means (not shown) as shown in Fig. 22, and can be moved in the front-back direction (Y-axis direction) and the left-right direction (X-axis direction) (see Fig. 23). ), the turntable (10) and the positioning device (19) are moved to a lower position. On the other hand, any one of the plurality of tape supply units (18) arranged in parallel on the component supply stand (13)
) is opposite the turntable <10).
14), the supply table (13) has already moved along the tape (16) wound on the reel (17).
The film on its upper surface is peeled off by a peeling mechanism (not shown), and the chip component (15) is located directly below the suction nozzle (31).

Here, the index unit (11) is completely rotated by the motor, and the turntable (10) is intermittently rotated.

First, the suction station (A
), the lower end of the suction nozzle (31) chucks the chip component (15) from the tape supply unit (18). In said station (A), the lower end of the suction nozzle (31) of the suction head (12) must be lowered to the level of the tape (16), which is - the cam member (20
) The head (12) is mounted on a vertical rail (not shown) that is movable up and down and is disposed at the interrupted part of the cam (22) of the head (12).
) is carried out by placing the roller (24) at the upper end. This suction is carried out by the suction nozzle (3) of the suction head (12).
1), filter (35), and storage chamber (4) for the cylindrical body (27).
0), a communication passage (44), a communication chamber (43), a joint (57) that communicates with the communication chamber (43) via a seal backing (61), a hose (42), and a connection hose (62).
, valve chamber (72), horizontally elongated intake passage (64), cylindrical part (21)
This is done by connecting the central air intake passage (65) of the 1000 and a vacuum pump (not shown) to form a vacuum circuit.

Next, the suction head (12) that has risen from the suction level moves to the roller <2> that slides on the cam (22> of the cam member (20)).
4) to the second working station (B).

In this station (B), a photosensor (117) detects whether or not the suction nozzle (31) is suctioning the chip component (15), and the suction nozzle <31) is previously controlled by a control device (not shown). The chip component (15) is rotated in a programmed direction by a rotating device while being sucked. That is, as shown in FIG. When the roller (50) comes into pressure contact and the drive motor (52) rotates, the rotary roller (50) rotates by a predetermined angle via the belt (53).After this rotation, the rotary roller (50)
) leaves the suction nozzle (31). In this way,
Before positioning, the chip component (15) is rotated in advance so that the chip component (15) is oriented in the mounting direction.

Next, at the work station (C), at the second work station (B), the suction nozzle (31)
If the photosensor (117) detects that the suction head (15) is not suctioned, the vacuum circuit to the suction head (12) is shut off by the switching valve (63). That is, when the roller (79) is pressed by a drive source (not shown) so that the state shown in FIG. 11 becomes the state shown in FIG. 10, the second lever (76)
swings, and the roller (78) that was engaged with the second recess (81) of the first louver (75) crosses over the protrusion (82) and engages with the first recess (80>). Therefore, the 7th ruber (7
5) is also rotated clockwise, and the valve body (6) is rotated by the spring claw 9).
8) closes the horizontally long intake passage (64).
) moves. As a result, the suction nozzle (31) is connected to the hose (42), the connecting hose (62), the valve chamber (72), and the valve stem (
It communicates with the atmosphere through the side hole (71) of 66) and the atmosphere connection passage (70).

The next work station (D>(E)(F) is a positioning station for the chip part (15), and the part (15)
According to the shape of the positioning station (D), (E), or (F) according to a predetermined program, the positioning unit (88>(90)(91)(115)(
116) to be positioned has already been determined according to the chip component (15) when the chip component (15) is suctioned at the suction station (A). For example, if the right positioning unit (91) is selected at the positioning station (E), the drive cylinder (92)
9) along the guide rail 95〉 through the frame (9)
3) moves by the distance (Ll), and the forward limit stopper (
The position is determined by the suction nozzle (31)
The unit (91) has already been moved before the nozzle (31) reaches the position directly below. At this time, stations (D) and (F) become idle stations.

The positioning operation of this chip component (15) will be explained below. First, the pusher (103) is connected to the cam (not shown).
When the pin (104>(
10B> as a fulcrum, and the positioning claw (106
) (109) (112) (113) open, and the suction nozzle (31) is moved by the roller (
24) on which the upper and lower rails (not shown) are lowered, and when the pushers (103) descend, the winds (106) (109) (112) (113)
), positioning is performed from all sides, and after the pusher (103) rises again, the upper and lower rails rise, and the suction nozzle (31>) also rises.After this, the turntable (10) It will rotate intermittently.

Next is the detection station (G), where the suction nozzle (31)
A photosensor (118) detects whether the chip component (15) is being attracted and whether it is being attracted in the normal position.
(119). The sensor (119) can be swung by a drive motor (120), and is connected to the chip component (1
Although the suction posture in step 5) is checked, the presence or absence and posture of the component may be detected in one session.

At the ninth work station (I), the suction nozzle C31
) suddenly drops to the Z level, which will be explained based on FIGS. 19 and 20. First, in the state shown in FIG. 19, the upper cam (22A) and the upper and lower rails (121) are on the same level, the roller (24) rides on the upper and lower rails (121), and then the shaft (125) and the upper and lower rails (121) ride on the upper and lower rails (121). Upper and lower rails (
121) descends and is connected to the lower cam (22B) at the same level. Then the roller (24) moves to the lower cam (
22B), the pressing member (127) moves onto the roller (
126). Then, as shown in Fig. 20, the upper and lower rails (121) rotate against the spring (123), and then the rails (121) rise together with the shaft (125) to be at the same level as the upper cam (22A). At the same time, the pressing member (127) also moves away from above the roller (126).

At the next tenth work station, the mounting station (J>), the chip component mount 15) is mounted on the printed circuit board on the xY table (4). For this reason, the suction nozzle (31) descends to the substrate via vertical rails (not shown) and mounts the substrate.

That is, the aforementioned photosensor (117) is connected to the chip component (1
5> is detected, and the photosensor (11B> at the detection station (G) also detects the presence, but only when the photosensor (119) determines that the suction posture is normal). The switching valve (63) is operated as shown in FIG. ) and is mounted as described above by communicating with the atmosphere through the valve stem (66) and blowing high pressure air from the atmosphere side end of the valve stem (66). Therefore, the photosensors (117) (118) are connected to the chip component (15).
), or if the sensor (119) determines that the suction posture is abnormal, the suction nozzle (31) does not descend and does not mount.

The next stations (K), (L), and (M) are idle stations. At the discharge station (N), the suction nozzle (31) is detected by the photo sensor (117) (11g).
detects the presence of the chip component (15), but if the photosensor (119) determines that the suction posture is abnormal, the chip component (15) is ejected by the lower end of the suction nozzle (31). That is, as mentioned above, the vacuum circuit is cut off and high pressure air is blown into the end of the valve stem (66).

At this time, dirt such as dust sucked in from the lower end of the suction nozzle <31) is blocked by the filter <35) and remains in the space (36) of the filter case (37), so the mounting station described above (J>) and when high-pressure air is blown at the discharge station (N), the dust is discharged from the lower end of the nozzle (31) and filtered (35).
) and the surrounding area will be automatically cleaned.

Therefore, the next time a vacuum circuit is formed, the circuit will not be clogged with dust or the like.

At the next station (○), 3 of the suction heads <12)
Which nozzle (31) of the book suction nozzles (31) is being used is detected by a sensor (not shown).

At the next nozzle selection station (P), which suction nozzle (
31) Select whether to use (31) or (31).

Regarding this selection, when using chip parts (15) of the same shape and size, the same suction nozzle (31
) may not be used for selection, but may be changed sequentially. Furthermore, when using a small chip-like component or a large chip-like component, a corresponding suction nozzle can be selected instead.

Describing this selection operation, that is, the operation of the connection switching device Wt (49), the joint (57) is connected to the other communication chamber (43).
), the lever (55> is rotated by a drive mechanism (not shown), and the joint (57) and the pawl (
56) are separated from the cylindrical body (27) and the gear (30), a gear (not shown) meshes with the gear (30), and the gear is driven by a drive mechanism (not shown) to drive the bearing.
29>, the cylindrical body (27) is rotated, and during this rotation, the presser lever (46) is rotated downward by the engaging member (48), so that all suction nozzles (31) are rotated.
(31) Perform by lowering (31). Then, in the communication chamber (43) corresponding to the selected suction nozzle (31>),
Push the lever (55) so that the joint (57) communicates with the lever (55).
) is rotated to engage the pawl (56) and gear (30), and a complete seal is created by the seal backing (61). Further, the suction nozzle (31) is raised by the spring (45) so that the holding lever (46) comes into contact with the flange surface (47) of the other suction nozzle (31). The next stations (Q) (R) are idle stations.

(G) Effects of the Invention As described above, the present invention allows a quick transition from one work station to the next even if there is a significant difference in the vertical positional relationship.

[Brief explanation of the drawing]

1 to 23 are views showing one embodiment of the present invention, in which FIG. 1 is a plan view showing a rotation device and a positioning device, FIG. 2 is a front view of an automatic mounting device, and FIG. Figure 3 is a plan view of the automatic loading device, Figure 4 is a side view of the automatic loading device, Figure 5 is a vertical cross-sectional view of the turntable, Figure 6 is a vertical cross-sectional view of the suction head, and Figure 7 is a suction head. FIGS. 8 and 9 are partial longitudinal cross-sectional views of the suction head to show the rotation of the nozzle; FIGS. 10 and 11 are plan views of the cylindrical body, etc. to show that the cylindrical body can rotate; 12 is a plan view of the positioning device, FIG. 13 is a side view of the positioning device, FIG. 14 is a vertical sectional view of the main part of the positioning unit, FIG. FIG. 16 is a plan view showing the relationship between the positioning claw and the chip component, FIG. 17 is a view showing the vertical displacement of the suction nozzle, and FIG. 18 is a side view showing the operation at work stations (I) and (J). , Fig. 19 and Fig. 20 are diagrams showing the operation of the upper and lower rails, Fig. 21 is a side view of the automatic mounting device showing the state in which the XY table is upward, and Fig. 22 is a side view of the automatic mounting device showing the state in which the XY table is lowered. FIG. 23 is a side view of the automatic mounting device showing a state in which the XY table has moved to a position below a turntable or the like. (4>...XY table, (10)...turntable, (12)...suction head, (15)...chip component, (18>...tape supply unit, (19)
...Positioning device, (31) ...Suction nozzle, (5
0)... Rotating roller, (52)... Drive motor, (
53)...Belt.

Claims (1)

[Claims] (1) A cylindrical cam member having a discontinuous portion, in which a cam is formed over almost the entire circumference, and the discontinuous ends of the cam have different vertical positional relationships; It is equipped with a vertical rail that is movable up and down so as to be connected to any of the cams having different vertical positional relationships, a turntable that is rotated intermittently, and a suction nozzle that suctions a chip-shaped electronic component to the periphery of the table. and a sliding part that is supported by the table so as to be movable up and down, and that slides along the cam and can be moved from one end side of the cam having a different vertical positional relationship to the other end side via the vertical rail. An automatic mounting device consisting of a suction head and a suction head.