JPH0812957B2 - Automatic mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application In the present invention, a suction nozzle vacuum suctions and conveys a component from a chip-shaped electronic component supply means, and mounts the component on a printed circuit board. The present invention relates to an automatic mounting device.

(B) Conventional Technology A conventional device of this type is disclosed in Japanese Patent Laid-Open No. 59-113699. In this type of device, if there is no filter for removing dust in the vacuum circuit, dust, dust, etc. sucked in from the end of the suction side of the suction nozzle accumulates in the vacuum circuit or constitutes a circuit. It is easy to accumulate in the connecting part of the parts, and especially in the sliding part, the sliding load becomes large, which causes a problem.

(C) Problems to be Solved by the Invention In view of the problems of the prior art described above, the present invention uses a filter before dust, dust, etc. sucked in from the suction nozzle reaches the above-mentioned connecting portion or the like. Is.

(D) Means for Solving the Problems For this purpose, the present invention is directed to an automatic mounting method in which a suction nozzle vacuum-sucks and conveys a component from a chip-shaped electronic component supply unit to mount the component on a printed circuit board. In the mounting device, a suction head having the suction nozzle penetratingly attached so as to be movable up and down, a dust-proof filter disposed at the upper end of the suction nozzle, and a vacuum source that communicates with the suction source and through the filter. A cover member that is detachably attached to the head and that forms a communication chamber that communicates with the nozzle, and that is provided between the cover member and the filter in the communication chamber to press the filter and to hold the suction nozzle. And a spring urging downward.

(E) Action The suction nozzle (31) sucks the chip component (15) due to the formation of the vacuum circuit, and at that time sucks dust and the like. At this time, the filter (35) blocks dust and the like, so that dust and the like do not flow into and accumulate between the filter (35) and the vacuum pump. At this time, the filter is held down by the spring, so the filter (35) itself does not protrude from the suction nozzle (31). The filter (35) can be replaced by removing the cover member (38).

(F) Example Hereinafter, one example of the present invention will be described in detail with reference to the drawings.

In FIGS. 2, 3, and 4, (1) is a base,
(2) is a supply conveyor for placing and carrying the printed circuit board, and (3) is a transfer device for transferring the printed circuit board on the outer supply conveyor (2) onto the XY table (4). The device (3) has one end supported by a rail (6) and is rotatable and movable along the rail (6), and a printed board is conveyed by the supply conveyor (2). Then, the pair of feed claws (7) and (8) rotate and descend with the rail (6) as a fulcrum, and the device (3) moves to the right in FIG. By 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 XY table (4). ), The printed circuit board on the supply conveyor (2) is replaced.

The XY table (4) on which the printed circuit board is placed from the remounting device (3) is lowered by the driving means (not shown) (the state shown in FIG. 21 to FIG. 22) and can be moved back and forth and right and left. Become. Next, in FIG. 5, a turntable (10) is attached to an index unit (11) rotated by a drive motor (not shown) and is intermittently rotated. Eighteen suction heads (12) are vertically movable at equal intervals on the periphery of the table (10). (1
3) is a component supply table movable along a horizontally long rail (14), and a tape (16) for storing chip components (15), which are chip-shaped electronic components, at regular intervals is wound around a reel (17). A plurality of tape supply units (supplying means) (18) arranged so as to feed out the tape (16) for each component arrangement pitch are arranged in parallel. (19) is a positioning device for positioning the chip component (15) before mounting (mounting) it on the printed circuit board. The XY table (4) is lowered to lower the turntable (10) and the positioning device (1
It is possible to move in the X-axis direction and the Y-axis direction below 9) (see Fig. 23).

Next, the turntable (10) and the suction head (12) will be described in detail with reference to FIGS. 5 and 1. (20)
Is the cylindrical part (2
It is a cylindrical cam member for guiding a hollow cylindrical table which is suspended and fixed to a mount (11A) of an index unit (11) so as to surround the upper part of (1). A cam (22) is formed over substantially the entire periphery at the lower peripheral portion of the cam member (20).
A roller (24) as a sliding portion provided at the upper end of each suction head (12) by a spring (23) on the upper surface of the cam (22)
The suction head (12) rotates together with the turntable (10) while moving up and down according to the shape of the cam (22). That is, a pair of guide rods (25) is erected on each suction head (12) so as to vertically pass through the turntable (10), and a roller (24) is provided at the upper end of the rods (25). A mounting member (26) rotatably provided is fixed. Therefore, each suction head (12) is supported by the turntable (10) to be vertically movable.

Next, the suction head (12) that rotates together with the turntable (10) while moving up and down with respect to the turntable (10).
Will be described in detail with reference to FIG. First, the cylindrical body (27) is rotatably held via a bearing (29) in the upper and lower blocks (28), and a gear having teeth formed on the peripheral side portion integrated with the cylindrical body (27). The structure (30) is rotated by meshing with a drive mechanism (not shown) from the outside. (31)
Is a suction nozzle inside which an intake passage (32) communicating with a vacuum pump as a vacuum source (not shown) is formed and which can suck the chip component (15) at the lower end. The nozzle (31) is a ball bearing (33).
It is guided by and can be moved up and down and rotated. A filter case (37) having a dust removal filter (35) which can be taken in and out through the upper openings (34) at the upper end of the nozzle (31) and a space (36) under the filter (35). Is fixed. This filter case (37) may be formed integrally with the suction nozzle (31).
Reference numeral (38) denotes a filter storage portion as a cover member detachably attached to the upper portion of the cylindrical body (27), and the storage chamber (40) serving as a communication chamber for the filter (35) and the spring (39) by hollowing the inside. ) Is formed. Therefore, the filter (3
When replacing 5), the filter housing section (38) may be removed from the cylindrical body (27), and the filter (35) may be put in and taken out from the top opening (34). A spring receiver (41) for fixing the upper end of the spring (39) is rotatably provided at the upper end of the storage chamber (40), and the spring (39) urges the nozzle (31) downward. I have. The spring (39) functions as a damper when mounting the chip parts (15) having different heights, and also has a function of holding the filter (35) so as not to jump out of its storage position. Further, although the filter (35) is provided above the suction nozzle (31), the present invention is not limited to this, and may be provided at any portion integrated with the suction nozzle (31), for example, below the nozzle.

The cylindrical body (27) is provided with three suction nozzles (31) as described above at predetermined angles, and the filter storage section (38) also has the storage chamber (40) as described above. Each of them is formed.

In addition, a communication chamber (4) that can communicate with a hose (42) serving as a coupling body that communicates with the vacuum pump is provided on the peripheral side of the cylindrical body (27).
3) are formed at three places, and the communication chamber (43) is connected to each of the communication paths (4).
It communicates with the storage chamber (40) via 4). Therefore, only one suction nozzle (31) is connected to the hose (42) via the storage chamber (40), the communication path (44), and the communication chamber (43). Then, the other two suction nozzles (31) that do not perform the suction operation are caused by the pressing lever (46) biased upward by the spring (45) to the flange surface (47).
Is pushed up and is pushed up. (48) is an engaging member for pushing down the lever (46).

Next, a rotation device for rotating the suction nozzle (31) itself will be described in detail below with reference to FIG. The rotating roller (50) comes into pressure contact with the protrusion (51) formed on the entire outer peripheral surface of the suction nozzle (31) from the outside, and the rotating roller (50) is passed from the drive motor (52) through the belt (53). ) Rotates, the nozzle (31) rotates by a predetermined angle.

Next, based on FIGS. 8 and 9, the connection switching device (49)
Will be described in detail below. A lever (55) that can swing with the pin (54) as a fulcrum is engaged between the teeth of a gear (30) provided on the cylindrical body (27) to prevent rotation of the cylindrical body (27). A nail (56) and a joint (57) connected to the hose (42) are integrated. A locking body (58) is provided with a spring (59) between the locking body (58) and the lever (55) so that the claw (56) is always engaged with the gear (30). It is energizing. An end of the joint (57) is a reduced diameter portion, and a stopper (60) is provided at the step portion. The stopper (60) is provided around the reduced diameter portion so that the end abuts on the stopper (60). A seal packing (61) as a ring-shaped or cylindrical seal member is wound. Therefore, when the pawl (56) is engaged with the gear (30) by being biased by the spring (59), the packing (6
In a state where the joint (57) and the communication chamber (43) are completely sealed by 1), the joint (57) and the communication chamber (43) communicate with each other so as not to cause a vacuum leak.

When the joint (57) communicates with another communication chamber (43), the lever (55) is rotated by a drive mechanism (not shown) so that the joint (57) and the claw (56) are cylindrical bodies. (27), separated from the gear (30), the cylindrical body (27) can rotate (see FIG. 9). Of course, the cylindrical body (27)
The opening end face of the communication chamber (43) is circular, and the peripheral edge of the opening is formed in a planar shape.

On the other hand, the structure of the other end of the hose (42) will be described with reference to FIG. 5. The other end of each hose (42) is connected to the connecting hose (6) embedded through the turntable (10).
2), and the connecting hose (62) is connected to a switching valve (63),
Horizontal intake passage (64), central intake passage (6
It communicates with the vacuum pump (not shown) via 5).

Next, the switching valve (63) will be described in detail with reference to FIGS. 10 and 11. The valve rod (66) is slidably attached to the bearing body (67), and the valve body (6) is attached to the tip of the valve rod (66).
8) is installed. In the state shown in FIG. 10, the spring (6
The valve body (68) closes the end opening of the horizontally long intake passage (64) of the turntable (10) by 9), thereby interrupting the vacuum circuit of the vacuum pump. The valve rod (66) is provided with an atmosphere connecting passage (70) not penetrated by the valve body (68) side, and a lateral hole is formed in a side portion of the communication passage (70) near the valve body (68). The valve chamber (72) can be communicated with the atmosphere by providing (71). That is, in the state where the valve body (68) closes the intake passage (64), the valve chamber (72) is connected to the atmosphere through the lateral hole (71) and the communication passage (70), and the valve body (68) is When the intake passage (64) is opened, the lateral 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 stem (66), and one end has a pin (7).
4) The first lever (7
The other end side of 5) and the collar (73) can come into contact with each other.
The second lever (76) having a substantially V shape is pivotally supported by a pin (77) at an intermediate portion thereof so as to be swingable, and rotatable rollers (78) (79) are provided at both ends. Is provided. The second lever (76) is driven by a drive source (not shown).
By swinging, one roller (78) can engage with the first recess (80) and the second recess (81) of the first lever (75) beyond the projection (82).

In addition, high pressure air is sucked in from the air side end of the valve rod (66),
The vacuum circuit to each suction nozzle (31) can be forcibly shut off, or the vacuum circuit can be cleaned.

Next, the positioning device (19) will be described in detail. The turntable (10) is provided at each work station (A) to
Orbiting (R), but positioning station (D)
Positioning devices (83), (84) and (85) are provided in (E) and (F), respectively. Since the positioning device (83) has a conventional structure, it will be briefly described. However, a belt (89) is stretched between the output shaft pulley (87) of the drive motor (86) and the positioning unit (88). The positioning claw not to be rotated is made rotatable. The positioning positions (84) and (85) in the positioning stations (E) and (F) will be described with reference to FIGS. 12 and 13 by taking the apparatus (84) as an example. The positioning device (84) has two positioning units (90) and (91), and the units (90) and (91) are in accordance with a program of a control device determined in advance according to the size of the chip component (15), Station (E) by drive cylinder (92)
, Any of the units (90) and (91) can be moved to a position directly below the suction nozzle (31). The units (90) and (91) are provided rotatably with respect to a frame (93). The frame (93) has two pairs of guides (94) abutting against a guide rail (95) from the side. By sliding, it moves linearly.

The units (90) and (91) are arranged at the tip of the frame (93) with a space (L1), and are provided on the unit (90) (91) and the frame (93). A belt (98) is stretched around the output shaft pulley (97) of the drive motor (96), and the unit (90) is rotated as the pulley (97) rotates.
(91) can rotate in synchronization. Also,
The 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 the rod (99) of the drive cylinder (92) and the connecting member ( The backward limit stopper (10) fixed to the fixed portion of the cylinder (92) so that the movement amount of the frame (93) connected via the (100) becomes the same distance as the distance (L1).
1) and the forward limit stopper (102).
Therefore, if the center of the suction nozzle (31) and the center of the positioning unit (90) match, the drive cylinder (92) is operated, and when the unit (91) is automatically replaced, the unit (91) is used. The center of (91) coincides with the center of the suction nozzle (31).

Next, regarding the structure of the positioning unit (90) (91)
It will be described with reference to FIG. When the pusher (103) is raised by a cam (not shown), the first opening / closing plate (105) pivots about the pin (104) in a direction to open the positioning claw (106). 105) The second
The opening / closing plate (107) also rotates about the pin (108) as a fulcrum and opens its claw (109). When the pusher (103) descends, both pawls (106) (109) are closed by a spring (111) whose one end is supported by a fixed part (110), and a chip part (15) sucked by a suction nozzle (31). And the parts (15) are positioned. Although there are four positioning claws per unit, the other pair of claws (112) and (113) have the same structure for opening and closing. Reference numeral (114) denotes a stopper,
The restriction of the closing direction of 5) is performed. During the rotation of the turntable (10), the positioning claws (106) (109) (112) (113) are rotated in the direction in which the chip component (15) sucked by the suction nozzle (31) is rotated. That is, the component (15) is rotated by the drive motor (96) in a direction that is compatible with the direction in which the component (15) is mounted on the printed circuit board.
Then, when the suction nozzle (31) descends, positioning is performed only by the centering operation.

Also, as shown in FIGS. 15 and 16, most of the chip components (15) are symmetrical, so that
If 5) is rotated 180 degrees and mounted on a printed circuit board, if the suction nozzle (31) is rotated as described above so that the chip component (15) is rotated 180 degrees in advance,
It is not necessary to rotate the claws (106) (109) (112) (113) while the turntable (10) is rotating.

As described above, when the chip part (15) passes through the positioning stations (D), (E), and (F), the positioning unit (88) (90) (91) (11) at any of the stations.
5) Positioning is performed by any of (116), and which unit is used depends on the size and shape of the chip component (15), which is selected according to the program of the control device.
In addition, in the stations other than the selected station, the suction nozzle (31) does not descend due to a mechanism (not shown), and the positioning unit that is not selected does not operate.

Next, FIG. 17 shows the displacement of the suction nozzle (31) at the upper and lower levels. The work stations (A), (D),
In (E), (F), and (J), in order to perform each operation, the above-mentioned cam (22) is moved up and down. This is because the cam (22) is located at the portion where the cam (22) is interrupted.
This can be achieved by arranging upper and lower rails (not shown) that are connected to and descend from the rail.

Also, the work stations (A), (B), (C),
In (D), (E), (F), and (G), positioning units (88), (9) for positioning the chip component (15).
Photo sensor (11) as presence detection means for detecting the presence or absence of 0), (91), (115), (116) and the component (15).
7), (118) and the photo sensor (119) as a detection means that can be swung by the drive motor (120) to detect the suction posture, are located below the suction nozzle (31), so that the parts are (15) must be transported, and in particular at the station (J), the suction nozzle (31) must be moved down to just above the printed board because of mounting the chip component (15) on the printed board.

Therefore, at the station (I), it was lowered to the Z level at once, and the next station (J) was started from the Z level. For its structure,
This will be described in detail with reference to FIGS. 18, 19 and 20. In FIG. 18, the states of the work stations (H) and (I) are shown from the right. The suction head which has traveled on the cam (22) from the station (H) by the rotation of the turntable (10) is shown. (31) The upper roller (24) moves on the upper and lower rails (121) and is carried to the next station (I). The structure of the upper and lower rails (121) will be described in detail with reference to FIGS. 19 and 20. The upper and lower rails (121) can swing about a pin (122) as a fulcrum, are urged by a spring (123), and have stoppers (12) protruding from the upper and lower rails (121).
The state where 4) is in contact with the shaft (125) is the state at the top in FIG. The shaft (125) is moved up and down by a cam drive mechanism (not shown) to move up and down rails (121) via the pins (122). Further, a rotatable roller (126) is attached to an end portion of the upper and lower rails (121), and a pressing member (127) pushes down the roller (126) to move the upper and lower rails (126) as shown in FIG. Roller (24) separates from 121). That is, in the cam (22) of the cylindrical cam member (20), the portion where the upper and lower rails (121) are arranged is interrupted, and the one end side and the other end side of the interrupted portion are in a vertical positional relationship. Since there is a marked difference, the upper and lower rails (121) are arranged at the discontinuous portions and moved up and down. Then, in the state shown in FIG. 19, the cam (22A) at one end located above and the upper and lower rails (121)
Are on the same level, after which the roller (24) moves onto the upper and lower rails (121), and then the upper and lower rails (121) descend together with the shaft (125), and the upper and lower rails (121) are below the cam (22B). It will be at the same level as. When the roller (24) moves on to the lower cam (22B), the state becomes the station (J). At this time, the pressing member (127) is pressed by the roller (12).
When 6) is depressed, the upper and lower rails (121) are rotated as shown in FIG. 20, and then the rails (121) are raised to the same level as the upper cam (22A), and the pressing member (127) is also It moves above the roller (126). Further, in the present embodiment, the example in which the upper and lower rails (121) are used for connecting from the upper side to the lower side is shown, but the present invention is not limited to this, and when connecting from the lower side to the upper side when there is a difference in the vertical positional relationship. May be used for.

In addition, in this embodiment, the chip part (15) is provided with a nail (10
6) Press with (109) (112) (113)
The positioning in the axial direction is performed, and the positioning in the θ direction is performed by the drive motor (96) via the belt (98). However, the present invention is not limited to this. For example, the position of the chip component (15) is optically detected and detected. The position correction in the θ direction may be performed by rotating the suction nozzle (31), and the position correction in the X axis direction and the Y axis direction may be performed using the XY table (4).

 The operation will be described below with the above configuration.

First, when the printed circuit board placed on the supply conveyor (2) is transported and reaches a position below the transfer device (3), the conveyor (2) stops. Then, the pair of feed claws (7) and (8) are pivotally lowered with the rail (6) as a fulcrum, and the right claw (7) is located at the left end of the printed board on the XY table (4). (8) is engaged with the left end of the printed circuit board conveyed by the conveyor (2). After that, the transfer device (3) moves along the rail (6) to move from the supply conveyor (2) to the XY table (4).
At the same time as the substrate is transferred to, the substrate on the table (4) is transferred to the discharge conveyor (9) and moved 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), but the transfer device (3) raises the feed claws (7) and (8) and moves the original along the rail (6). Return to position. XY table (4)
Is lowered by a driving means (not shown) as shown in FIG. 22, and can be moved in the front-rear direction (Y-axis direction) and the left-right direction (X-axis direction) (see FIG. 23). 10) and move to a position below the positioning device (19).
On the other hand, among a plurality of tape supply units (18) arranged side by side on the component supply table (13), an arbitrary unit (18) is supplied along the rail (14) so as to face the turntable (10). The tape (16) wound on the reel (17) has the film on its upper surface peeled off by a peeling mechanism (not shown) and the chip part (1
5) is located immediately below the suction nozzle (31).

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

First, in the suction station (A), which is the first working station, the lower end of the suction nozzle (31) sucks the chip component (15) from the tape supply unit (18). In the 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 interrupted by the cam (22) of the cam member (20). The roller (24) at the upper end of the head (12) is mounted on a vertically movable upper and lower rail (not shown) provided at the portion, and the upper and lower rails are lowered. This suction is performed by the suction nozzle (31) of the suction head (12), the filter (35), and the storage chamber (4) of the cylindrical body (27).
0), communication passage (44), communication chamber (43), joint (57) communicating with the communication chamber (43) via seal packing (61), hose (42), communication hose (62), valve chamber (7
2), horizontal intake passage (64), central intake passage (6) of cylindrical part (21)
5) and a vacuum pump (not shown) are connected to form a vacuum circuit.

Next, the suction head (12) that has risen from the suction level moves to the second work station (B) via the roller (24) that slides on the cam (22) of the cam member (20). In this station (B), whether or not the suction nozzle (31) is sucking the chip component (15) is detected by the photo sensor (117), and the suction nozzle (31) is previously sent to a control device (not shown). The chip component (15) is rotated by a rotating device while being sucked in the programmed direction. That is, as shown in FIG. 7, the rotating roller (50) is pressed against the projection (51) of the suction nozzle (31) from the outside, and the drive motor (5) is pressed.
By rotating 2), the rotating roller (50) rotates through a predetermined angle via the belt (53). After this rotation, the rotating roller (50) separates from the suction nozzle (31). In this way, the chip component (15) is rotated in advance so as to be in the direction when mounting the chip component (15) before positioning.

Next, in the work station (C), when the photo sensor (117) detects that the suction nozzle (31) is not sucking the chip component (15) in the second work station (B), The vacuum circuit to the suction head (12) is shut off by the switching valve (63). That is, the state shown in FIG.
When the roller (79) is pressed by a drive source (not shown) so as to be in the state shown in FIG. 10, the second lever (76) swings to move the first lever (76).
The roller (78) that has been engaged with the second recess (81) of the lever (75) goes over the protrusion (82) and engages with the first recess (80). Therefore, the first lever (75) also rotates clockwise, and the valve rod (66) moves so that the valve body (68) closes the laterally long intake passage (64) by the spring (69). As a result, the suction nozzle (31) is connected to the hose (42), the connection hose (62), the valve chamber (72), the lateral hole (71) of the valve rod (66), and the atmosphere connection passage (7).
Communication with the atmosphere via 0).

The following work stations (D), (E), and (F) are positioning stations for the chip component (15), and any of the positioning stations (D), (E), and (F) according to a predetermined program according to the shape of the component (15). Which of the positioning units (88), (90), (91), (115), and (116) is to be used and whether the chip part (15) is sucked at the suction station (A) depends on the part. Has already been determined. For example, if the right positioning unit (91) is selected at the positioning station (E), the frame (93) is spaced by the drive cylinder (92) along the guide rail (95) via the rod (99) ( L1) is moved, the position is determined by the forward limit stopper (102), and the nozzle (31) is located immediately below the suction nozzle (31).
The unit (91) has already been moved before arrives. At this time, stations (D) and (F) become idle stations.

The following describes the positioning operation of this chip component (15).
It will be described with reference to FIG. First, when the pusher (103) is raised by a cam (not shown), the first and second opening / closing plates (105) and (107) are respectively moved to the pins (104) against the spring (111).
(108) pivots on the fulcrum, and the positioning claw (106)
(109), (112), and (113) open. And the suction nozzle (3
1) is lowered by the lower rail (not shown) on which the roller (24) on the upper end of the suction head (12) is placed,
When the pusher (103) descends, the claw (106)
(109) The positioning is performed from four directions sandwiched by (112) and (113). After the pusher (103) is raised again, the upper and lower rails are raised, and the suction nozzle (31) is also raised.
After this, the turntable (10) is rotated by one intermittent rotation.

Next, at the detection station (G), the suction nozzle (31)
Whether the chip component (15) is adsorbed by the photo sensor (118), (11)
Detect in 9). The sensor (119) is connected to a drive motor (12
It is possible to swing by (0), and the suction posture of the chip component (15) is checked, but the presence or absence and the posture of the component may be detected by one sensor.

At the ninth work station (I), the suction nozzle (3
1) is suddenly lowered to the Z level.
It will be described based on FIG. First, in the state shown in FIG. 19, the upper cam (22A) and the upper and lower rails (121) are at the same level, and the roller (24) moves on the upper and lower rails (121).
Next, the upper and lower rails (121) descend together with the shaft (125), and are connected to the lower cam (22B) at the same level. And when the roller (24) moves to the lower cam (22B),
The pressing member (127) presses down the roller (126). Then the first
As shown in FIG. 20, the upper and lower rails (121) rotate against the springs (123), and then the rails (121) rise together with the shaft (125) to be at the same level as the upper cam (22A). The pressing member (127) also moves to separate above the roller (126).

At the mounting station (J), which is the next tenth work station, the chip component (15) is mounted on a printed board on the XY table (4). For this reason, the suction nozzle (31) descends to the substrate by a vertical rail (not shown) to perform this mounting.

That is, the above-described photo sensor (117) is
5) If the photo sensor (118) also detects the presence of the detection station (G) and the photo sensor (119) determines that the suction posture is normal, the switching is performed as described above. The valve (63) is actuated, the oblong intake passage (64) is closed by the valve body (68), and the valve chamber (72) is passed through the atmosphere communication passage (70) of the valve rod (66) as shown in FIG. The valve rod (66) is mounted as described above by sucking high pressure air from the atmospheric side end of the valve rod (66). Therefore, the photo sensors (117) (11)
If 8) does not detect the presence of the chip component (15), or if the sensor (119) determines that the suction attitude is abnormal, the suction nozzle (31) does not descend and is not mounted.

The next station (K) (L) (M) is an idle station. At the discharge station (N), the suction nozzle (31) detects the presence of the chip component (15) by the photo sensors (117) and (118), but the suction attitude is determined to be abnormal by the photo sensor (119). In case,
The chip component (15) is discharged by the lower end of the suction nozzle (31). That is, as described above, the vacuum circuit is cut off and high pressure air is blown from the end of the valve stem (66).

At this time, dust such as dust sucked from the lower end of the suction nozzle (31) is blocked by the filter (35) and accumulated in the space (36) of the filter case (37). When high-pressure air is blown in J) and the discharge station (N), the dust is discharged from the lower end of the nozzle (31), and the filter (35) and its surroundings are automatically cleaned. Therefore, when the vacuum circuit is formed next time, dust and the like will not be clogged in the circuit.

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

In the next nozzle selection station (P), selection is made on which suction nozzle (31) (31) (31) is to be used next based on data programmed in the control device. For this selection, chip components of the same shape and size (1
When 5) is used, the same suction nozzle (31) does not have to be used for selection, but the selection may be sequentially performed. When a small chip-shaped part is used or when a large chip-shaped part is used, it is possible to select to substitute a suction nozzle corresponding to the chip-shaped part.

This selection operation, that is, the operation of the connection switching device (49) will be described. When the joint (57) is connected to another communication chamber (43), the lever (55) is rotated by a drive mechanism (not shown), The joint (57) and the claw (56) are separated from the cylindrical body (27) and the gear (30), respectively, and the gear (3)
0) meshes with a gear (not shown) to rotate the cylindrical body (27) via a bearing (29) by the gear by a drive mechanism (not shown). At this time, the holding lever (46) is engaged with the engaging member. All the suction nozzles (31), (31), and (31) are moved downward by rotating downward by (48). Then, after the rotation of the cylindrical body (27), the lever (55) is rotated so that the joint (57) communicates with the communication chamber (43) corresponding to the selected suction nozzle (31), and the pawl (56) is rotated. ) And the gear (30) are meshed and completely sealed by the seal packing (61). The holding lever (46) is connected to the flange surface (4) of the other two suction nozzles (31).
7) and the suction nozzle (31) is raised by the spring (45). The next station (Q) (R) is an idle station.

(G) Effect of the Invention With the above-described configuration, the present invention has a structure in which even if dust is sucked when the suction nozzle sucks a chip component, the dust is blocked by the filter and the distance from the filter to the vacuum pump is reduced. Dust and the like will not flow into and collect.
Therefore, the sliding load at the sliding portion does not become large, and the sliding portion cannot slide.

Further, since the filter is pressed by the spring at this time, the filter itself does not pop out of the suction nozzle, and this spring can also serve as a spring for urging the suction nozzle downward.

Further, by removing the cover member from the suction head, the pressing of the spring can be released and the filter can be easily replaced.

[Brief description of drawings]

1 to 23 are views showing an embodiment of the present invention. FIG. 1 is a plan view showing a rotating device and a positioning device, FIG. 2 is a front view of an automatic mounting device, and FIG. 3 is a plan view of the automatic mounting apparatus, FIG. 4 is a side view of the automatic mounting apparatus, FIG. 5 is a vertical sectional view of the turntable, FIG. 6 is a vertical sectional view of the suction head, and FIG. FIGS. 8 and 9 are partial longitudinal sectional views of the suction head for showing rotation of the nozzle, FIGS. 8 and 9 are plan views of a cylinder and the like for showing that the cylinder is rotatable, and FIGS. Figure is a cross-sectional plan view showing the switching valve, FIG. 12 is a plan view of the positioning device, FIG. 13 is a side view of the same positioning device, FIG. 14 is a vertical sectional view of a 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 diagram showing the vertical displacement of the suction nozzle, and FIG. The work station (I)
FIG. 19 is a side view showing the operation of the upper and lower rails, FIG. 21 is a side view of the automatic mounting apparatus showing a state in which the XY table is above, and FIG. Side view of the automatic mounting device showing the XY table lowered,
FIG. 23 is a side view of the automatic mounting device showing a state where the XY table is moved to the lower position of the turntable or the like. (4) XY table, (10) Turntable,
(12)… Suction head, (15)… Chip parts, (18)
…… Tape supply unit, (19)… Positioning device,
(31)… Suction nozzle, (50)… Rotating roller, (52)
…… Drive motor, (53) …… Belt.

Claims (1)

[Claims] 1. An automatic mounting apparatus for mounting a component on a printed circuit board by suctioning a component from a chip-shaped electronic component supply means by vacuum-sucking the component to convey the component, and the suction nozzle is vertically movable. A suction head attached to the suction nozzle, a dust-proof filter disposed at the upper end of the suction nozzle, and a communication chamber that communicates with a vacuum source and also communicates with the nozzle through the filter. A cover member that is detachably attached to the head; and a spring that is provided between the cover member and the filter in the communication chamber, presses the filter, and urges the suction nozzle downward. Automatic mounting device.