JPH0378298A - Device for mounting parts - Google Patents

Abstract

PURPOSE:To provide a small head with a small nozzle pitch for mounting parts by an arrangement in which the diffused light through a first diffusion panel is further diffused through second diffusion panels attached to nozzles. CONSTITUTION:A board 74 for illumination is mounted on a frame 73 fixed on a mounting board 49. A unit diffusion panel 77 transmits and diffuses the light from an LED 76 to provide uniform illumination. The light passes through a diffusion panel 26 and diffuses so that chip parts 7 are irradiated with more uniform light. Therefore, light reaches portions where shafts 27 pass through the diffusion panel 77, and even small parts are sufficiently illuminated. Consequently, the nozzle pitch can be reduced and thus a mounting head can be made small by changing the size of the diffusion panel 26 depending on the size of parts 7.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Industrial Application Field The present invention is directed to a method in which a recognition device recognizes a component being sucked by a plurality of suction nozzles provided in a mounting head and performs correction based on the recognition result. The present invention relates to a component mounting device that mounts components onto a printed circuit board.

(b) Conventional technology A component recognition device for this type of component mounting device was developed in Japanese Patent Application Laid-open No. 6
It is disclosed in Japanese Patent No. 3-298573.

In this prior art, when there is only one nozzle, a lighting section and a diffusion plate are provided for the one nozzle. In the case of large parts, this lighting section becomes quite thick and deaf.

In addition, in this type of component mounting device, when taking out many types of parts such as tray parts and tape parts, it takes time to take out and mount the parts. It is more advantageous to take out a plurality of parts by using the same mounting head. At this time, if a light is attached to each nozzle as in the conventional technology, each lighting section must have its mounting frame, and if each nozzle is installed next to each other, each mounting frame will overlap. However, the disadvantage is that the nozzle interval cannot be shortened.

(c) Problems to be Solved by the Invention Therefore, an object of the present invention is to reduce the nozzle pitch even if there are a plurality of nozzles, thereby making the mounting head compact.

(d) Means for Solving the Problems Therefore, the present invention provides a recognition device that recognizes a component being sucked by a plurality of suction nozzles provided in a mounting head, performs correction based on the recognition result, and then removes the printed circuit board. In a component mounting device for mounting a component on a component mounting device, there is provided a lighting plate through which each of the nozzles can move vertically and a plurality of light sources for emitting illumination light are disposed; a first diffusion plate through which each nozzle can move vertically and transmit and diffuse illumination light emitted from the plurality of light sources; a first diffusion plate located below the first diffusion plate and attached to each of the nozzles; and a second diffuser plate that further transmits and diffuses the diffused light passing through the first diffuser plate and illuminates the component sucked by the nozzle.

(e) Illumination light emitted by the plurality of light sources arranged on the operational illumination plate is transmitted and diffused by the first diffusion plate, and then transmitted and diffused by the second diffusion plate, illuminating the components attracted to the nozzle. recognized by the recognition device.

(f) Example An embodiment of the present invention will be described below based on the drawings.

In FIGS. 1 and 2, (1) is a component mounting device to which the present invention is applicable. (2) is a pair of supply conveyors, (3) is an X-table section, (4) is a pair of discharge conveyors, (5) is a Y-hen 1 section, and (6) is a chip component ( 7), and (8)
is the tool exchange section.

The supply conveyor (2) conveys the printed circuit board (10),
The board (10) is supplied to the X table section (3), and the discharge conveyor (4) transports the printed circuit board (10) discharged from the X table section (3) to be discharged to a downstream device. It is something.

Next, Y Hen part 1 (5) will be explained in detail. In Figures 1 to 3, (12) (12) is a mounting head, which is attached to a head nut (14) (14) fitted to a head ball screw (13) (13), The ball screw (15) is driven by the head drive motor (15) (15).
13) When (13) rotates, it moves in the Y direction guided by the head linear guides (16) (16) (16) (16), and the chip component (7) supplied from the component supply section (6) ) on the X-table part (3) and the printed circuit board (10
).

The mounting head (12) will be explained in detail. In Figure 3, (18) is a nozzle (19) that sucks the chip component (7).
) is a vertically movable body having a mounting head (12) at the tip.
There are 3 rods that can be moved up and down.

(20) is a stopper mechanism that prevents the vertically movable body (18) from descending, and (21) is a stopper mechanism that prevents the vertically movable body (18) from descending.
(22) is a rotation mechanism that rotates the vertical movement body (18) in the θ direction.

(23) is a lighting unit for illuminating the chip component (7).

The structure of the vertically moving body (18) will be explained in detail. In FIGS. 3 and 4, (24) is a tool having a nozzle (19) at the tip, and a component vacuum passage (25) for sucking the chip component (7) is formed inside. Diffusion plate (26) for diffusing the light beam and irradiating the component (7)
is provided. The tool (24) has a nozzle (19) and a diffuser plate (26) depending on the size and shape of the part (7).
Many different sizes are available.

27) is a shaft that sucks and holds the tool (24), and is composed of an inner cylinder (28) and an outer cylinder (29).
8) has a component vacuum passage (30) communicating with the component suction vacuum passage (25) of the tool (24), and an inner cylinder (2).
A tool vacuum passage (31) for sucking the tool (24) is formed between the tool (24) and the outer cylinder (29). A pair of leaf springs (32) are attached to the lower end of the outer cylinder (29).
The tool (24) is removably held at the lower end of the shaft (27) by vacuum suction from the tool vacuum passageway (31) and a leaf spring (32).

(34) is a double pipe joint attached to the upper part of the shaft (27), and consists of a rotation guide nut (36) with a flange (35) formed thereon and a nut (37). The rotation guide nut (36) is rotatable with respect to the shaft (27>) via a bearing (38), and is connected to the tool vacuum passage (
31), a vacuum vibrator (39) is fitted up to the outer cylinder of the shaft (27).

A groove (40) is carved all around the part of the shaft (27) that the vacuum pipe (39) reaches, and a part of the groove (40>) is open (4OA).
27) rotates the rotation guide nut (36) by the rotation mechanism (21).
), the tool vacuum passageway (31) is rotated through the opening (
40A) and the vacuum pipe (39) through the groove (40)
It will be communicated to.

The nut (37) is fixed to the outer cylinder (29) and rotates as the shaft (27) rotates. (41) is a nut O-ring that seals the tool vacuum passage (31) in the nut (37) to prevent vacuum from leaking; (42) (
42) is a rotary nut O-ring that seals the rotary guide nut (36〉) from the groove (40) through the bearing (38) to prevent vacuum from leaking. ) are each connected to a vacuum source (not shown) via a valve (not shown).
39) is further connected to a compressed air source via a valve (not shown). (43) is a regulated member whose rotation is regulated by a rotation mechanism (22>) fixed to the shaft (27).

Next, the stopper mechanism (20) will be explained in detail. (46
) is a stopper lever having a claw part (47) at the lower end, and a mounting plate (49) attached to the head nut (14).
) The upper end is rotatably attached to a solenoid (50), and swings about a support shaft (51) as the solenoid (50) moves back and forth.

That is, when the solenoid (50) protrudes in a demagnetized state, the claw portion 47> engages with the lower surface of the flange (35) to restrict the downward movement of the vertically movable body (18).
When the solenoid (50) is energized and retreats, the claw (47) comes off from the flange (35) and the vertical moving body (1
8) allows for downward movement.

Next, the vertical movement drive mechanism (21) will be described in detail.

When the vertical movement motor (56) rotates the vertical movement ball screw (54), the vertical movement plate (57) attached to the vertical movement nut (55) is mounted on the mounting plate (49) or the near guide (53). It moves up and down along (53). The vertically movable plate (57) has locking pins (58) (58) (58) at three locations that engage with the lower surface of the flange (35) to support the vertically movable bodies (18) (18) (1g), respectively. ), and when the stopper lever (46) is unlocked, the vertical moving body (18) moves up and down while being fully supported by the locking pin (58) by rotation of the motor (56).

Next, the rotation mechanism (22) will be explained in detail. In FIGS. 3 and 4, (60) is a block vertically installed on the mounting plate (49), <61) is a rotary bearing body embedded in the block (60), and ( 62) is a vertically movable guide body that is guided by the rotary bearing body (61) and rotates in the θ direction. The shaft (27) is guided by the vertical movement guide body (62) and can move up and down.

A timing pulley (64) is fully fitted on the outer periphery of the lower part of the vertical movement guide body (62), and a motor timing pulley (chronograph) is installed on the lower part of the nozzle rotation motor (65) installed on the block (60). It is attached to the shaft. Motor (6
5) drives the vertically movable guide body (62) via both pulleys (64), (66) and a timing belt (67) stretched between both pulleys (64), (66).
performs rotation.

A rotation prevention roller (6
A pair of detents (69) having a rotation stopper (8) are formed, and the regulated member (43) fixed to the shaft (27)
) are engaged with the rollers (6B) (68) from both sides to restrict rotation of the shaft (27) in the θ direction. Therefore,
When the vertical movement guide body (62) is rotated by the motor (65), the shaft (27) and the nozzle (19) are rotated in the θ direction via the rotation stopper (69) and the regulated member (43). become.

(70) is a board recognition camera that is attached to the mounting head (12) and recognizes the position of the printed circuit board (10).

In Fig. 1 and Fig. 3, (71) and (71) are component recognition cameras, and the nozzle (19) is connected to the component supply section (6).
The chip component (7) that was picked up and taken out by the mounting head (1
2), and the camera (71) recognizes the suction position, posture, lead bending, lead floating, etc.

Two component recognition cameras (71) (71) are installed in parallel, and the installation interval is the same as the interval at which the vertically movable bodies (18) (18) (18) are attached to the mounting head (12).

Of the two recognition cameras (71) (71), one has low magnification and is for large parts (7), and the other has high magnification and is for small parts (7) or narrow lead wire spacing. Used to recognize part (7). 2 recognition cameras (71)
The height position of (71) is such that the high-magnification camera (71) is installed high to enable more detailed recognition, and the low-magnification camera (71) is installed low to enable recognition from a wider angle. Good too. In this embodiment, the right side in FIG. 3 has a low magnification, and the left side has a high magnification camera (71).

Here, the lighting unit (23) attached to the lower part of the mounting head (12) will be explained. The lighting unit (23) is equipped with a chip component (7) that is attracted to the nozzle (19).
) is recognized by the camera (71) when the chip component (7)
It is intended to illuminate. In Figures 3, 5, and 6, (73) is a frame fixedly attached to the mounting plate (49), and pins (75) (75) (75) (7
5) are placed at the four corners. (74) is the nozzle (19
) (19) (19) pin on top (75) (75) (75)
(75) for light emission installed on
It is a lighting board with a large number of D (76) arranged on the bottom surface,
The portion through which the shaft (27) passes and moves up and down is open.

At the bottom of the lighting board (74), one unit diffuser plate (77) is connected to pins (75) (75) (75) at regular intervals.
) (75), and L E D (76)
It transmits and diffuses the light rays emitted by it, making the brightness and darkness uniform depending on the location. The light beam made uniform by the unit diffuser plate (77) is transmitted through the diffuser plate (26) and diffused to become a uniform light beam, which is then irradiated onto the chip component (7). The unit diffuser plate (77) is also open at the portion through which the shaft (27) passes.

The component (7) can be illuminated even with only the unit diffuser plate (77), but in the case of a small component (7), the portion of the unit diffuser plate (77) that the shaft (27) passes through can illuminate the component (7). Therefore, the small part (7) is equipped with a unit diffuser plate (
Since the diffused light of 26) is no longer applied, the diffuser plate (26) functions to transmit and diffuse the diffused light of the unit diffuser plate (77) again to illuminate the component (7). The illumination light transmitted through the diffuser plate (26) is reflected in the component (7).
A diffuser plate (26) is prepared according to the size of the component (7) so that the entire area is irradiated. Although the small parts (7) can be illuminated with a large diffuser plate (26), the nozzle (19) that attracts the small parts (7) is equipped with a small diffuser plate (26).
26) requires less space. If the diffuser plates (26) are for normal sized parts, they will not come into contact with each other even if they are held by three shafts (27).

Large diffuser plate (26) for even larger parts (7)
If this is necessary, the tool (24) having the large diffuser plate (26) may be held by the vertically movable bodies (18) (1g) at both ends. The lighting board (74) requires a larger area for each component (7) than the diffuser plate (26), so if a lighting unit is provided for each vertically moving body (18), the nozzle (19) L because the space between
E D (76)... are arranged and integrated. When recognizing parts for each nozzle (19), the necessary range of LE
Although L E D (76) is designed to emit light, every time a component is recognized, L E D (76)... may all emit light.

Next, the X table section (3) will be explained. In Fig. 1, (81) is an X table on which the printed circuit board (10) supplied to the supply conveyor (2) (2) is placed, and a nut (not shown) that fits into the X ball screw (82) is attached. The X linear guide (84) (84) is attached by rotating the X ball screw (82) by the X motor (83).
Move in the X direction along.

The chip component (7) that has been attracted by the nozzle (19) and moved by the rad (12) to the mounting head (12) is moved in the Y direction and the X table (81) is moved in the X direction.
It is mounted on the printed circuit board (10) on the table (81).

Next, the tool exchange section (8) will be explained in detail. In Figures 1 and 7, (85) is a type of tool (24) placed side by side in the X direction due to the different sizes and shapes of the nozzle (19) and diffuser plate (26). It is a tool table for storage. A recess (86) is formed in the tool table (85) to match the size of the diffuser plate (26) so that the tool (24) does not shift. A through hole (87) is open for tool exchange.

Several types of tool tables (85) are prepared depending on the type of tools (24), and are replaceably attached to the movable table (88). Moving white 88 as shown in FIG.
) is provided with locating pins (78) at two locations, and the tool table (85) has a locating hole 79) into which one of the bins (78) fits without any gaps, and a locating hole 79) in which one of the bins (78) fits without any gaps. A long hole (80) into which is inserted is bored.

The tool table (85) has locating pins (78) (78) on the moving table (88) located in the positioning hole (79) and the long (
When the bolt (80) is inserted and positioned, the bolt (89)
(89) (89) It is fixed with a claw cap.

A work receiving box (90>) is further attached to the moving table (88), so that chip parts (7>) determined to be defective by the parts recognition camera (71>) can be placed side by side in the X direction. The moving table (88) is equipped with a tool ball screw (
91) is attached to the tool nut (92) that fits, and the tool motor (93) is connected to the ball screw (91).
) is rotated to move in the X direction along the tool linear guide (94). Therefore, the tool table (8
1) and the work receiving box (90) will move in the X direction.

In FIG. 9, (95) is a cylinder fixedly provided on the base (96), and the rod (97) of the cylinder (95>) is connected to the pad holding member via the attachment piece (98>). (
99) is installed.

The pad holding member (99) is cylindrical and has a suction pad (100) inserted therein for exchanging the tool (24), but the suction part of the suction pad (100) is widened to form a stepped part, so that the suction A spring (
101) engages with the stepped portion to urge and support the suction pad (100) upward. The upper surface of the suction pad (100) has a recess formed in the center so that the nozzle (19) escapes when the cylinder (95) comes into contact with the lower surface of the diffuser plate (26) of the tool (24) to be replaced when the cylinder (95) is activated. ing.

Inside the suction pad (100) there is a vacuum air passage for vacuum suction (
104) are formed and open at several locations on the upper surface of the suction pad (100). The vacuum ventilation path (104) is connected from below the suction pad (100) to a vacuum source (not shown) via a pulp (not shown).

The through hole (87) opens at a position large enough to accommodate the suction pad (100) that has been moved upward by the operation of the cylinder (95). The suction pad (100) is attached to the mounting head (1
2) is located at the intersection of the trajectory through which the nozzle (19) held by the tool table (85) passes and the trajectory through which the through hole (87) of the tool table (85) passes. Mounting head (12
) are provided, so there are also two suction pads (100).
There are several. When the cylinder (95) is actuated, the suction pad (100) is held by the vertically movable body (18), and a spring (
101), but is located at a position where they abut against each other.

Next, the component supply section (6) will be explained. In FIGS. 1 and 10, in the case of this embodiment, the component supply unit (6) is equipped with a tape component supply device (106) that supplies chip components (7) stored in a tape (105). There are many types of chip components (7) supplied by the tape component supply device (106), and usually one supply device (106) is provided.
06) supplies one type of chip component (7), and a large number of supply devices (106) supply various kinds of components (7), but adjacent supply devices (106) are arranged in parallel with a predetermined interval. It is set up.

The vertically movable body (18) attached to the mounting head (12)
) is mentioned above, but the vertically moving body (1
8) (1g) The installation interval of (18) matches the installation interval of the supply device (106), and the installation interval of the tool (24)
) is suitable for part (7), the three nozzles (19) (19) (19) can descend at the same time and pick up parts (7) (7) (7) at the same time. . However, if there are supply devices (106) that supply large parts (7), they cannot be installed at regular intervals.

The operation of the above configuration will be explained below.

First, the exchanging operation of the tool <24) will be explained based on FIGS. 11 to 20. The tool (24) is replaced in a timely manner depending on the type of part (7) to be picked up.

First, the mounting head (12) holding the tool (24) to be replaced is driven by the morph (15) and attached to the linear guide (1) via the ball screw (13) and nut (14).
6> in the Y direction and select the tool you want to exchange (24
) is positioned above the suction pad (100). At this time, the tool table (85) is fixed to the movable table (88).
) is driven by a motor (93) and moves in the X direction along a linear guide (94) via a ball screw (91) and a nut (92), and moves the tool (24) of the mounting head (12).
) is placed in the recess (86) where the suction pad (100
) as shown in Figure 11.

Then, the stopper lever (46), which is engaged with the flange (35) of the vertical moving body (18) holding the tool (24) to be replaced, is disengaged from the flange (35) by the operation of the solenoid (50). Then, the ball screw (54) is rotated by the drive of the motor (56), and the vertical moving plate (57) is lowered along the linear guide (53) via the nut (55) and supported by the locking pin (58). vertically moving body (
18) descends while being guided by the vertical movement guide body (62).

When the tool (24) has been lowered to the predetermined position shown in FIG. 12, the motor (56) stops and the tool (24) stops.

Then, the cylinder (85) is actuated, the rod (97) rises, the suction pad (100) passes through the through hole (87) via the mounting piece (98) and the pad holding member (99), and the diffusion plate rises. The nozzle (19) escapes and comes into contact with the lower surface of (26). The rod (97) is raised further by the spring (1
Due to the urging force of 01), the suction pad (100) moves against the diffusion plate (
26) and rises to the state shown in FIG. 13.

At this time, a valve (not shown) is switched and compressed air is supplied into the vacuum pipe (39), the groove (40), and the tool vacuum passage (31), and the vacuum ventilation passage (104) is supplied with compressed air.
The diffuser plate (26) is suctioned to the suction pad (100) by a vacuum source (not shown) through the suction pad (100). After this, cylinder (9
5) is activated and the rod (97) is lowered, the tool (2
4) is pressed by the compressed air in the tool vacuum passage (31) and presses the suction pad (10) while resisting the biasing force of the leaf spring (32).
0) and descends. Then, the tool (24) is placed in the recess (86) of the tool table (85) as shown in FIG. At this time, each valve is switched and the inside of the tool vacuum passage (31) and vacuum ventilation passage (104) is at atmospheric pressure.

Thereafter, the vertically movable body 18) is driven by the motor (15) and rises to the position shown in FIG. 15. Then the tool table (
85) is driven by the motor (93) and moves vertically.
8) Place the type of tool (2) you want to use in the waiting position.
4) Position it as shown in Figure 16.

Then, the vertical moving body (18) is moved to the 17th position by the motor (15).
As shown in the figure, when the tool vacuum passage (31) is suctioning a vacuum, the suction pad (100) rises due to the operation of the cylinder (95) and the tool (24) is sucked into the vacuum ventilation passage (31).
104) while adsorbing the shaft (27)
Fit them together as shown in Figure 18. Then, the tool (24
> is the biasing force of the leaf spring (32) and the tool vacuum passage (31)
It is held on the shaft (27) by vacuum suction via.

After this, the suction pad (100) is moved to the vacuum ventilation channel (104).
The suction via the cylinder (95) is stopped and the vertical moving body (18) is lowered as shown in FIG. 19 by the cylinder (95), and the vertically movable body (18) is raised by the motor (15) as shown in FIG. Thus tools (24)
The exchange operation ends.

In addition, if you want to replace the tool table (85) in order to place a diffuser plate (26) of another size, please use the bolts (8
9), remove the tool table (85), and insert the new tool table (85) into the positioning hole (79) and slotted hole (80).
is fitted onto the locate pin (78), placed on it, and then tighten the bolt (
89) can be used for tightening.

Next, the operation of mounting the chip component (7) onto the printed circuit board (10) will be explained. At this time, the tool was replaced as described above, and the rightmost nozzle (19
) and diffuser plate (26) are for the small dog part (7), and the central nozzle (19) and diffuser plate (26) are for the small part (7).
), and the left end nozzle (19) and diffuser plate (26) are for small parts (7).

First, the printed circuit board (10) is placed on the supply conveyor (2) (2).
) and supplied to the X-table section (3), the printed circuit board (10) is placed on the X-table (81).

Next, the mounting head (12) is mounted on the linear guide (16) by rotation of the ball screw (13) driven by the motor (15).
) to the parts supply section (6). At this time,
All three vertically movable bodies 18) are locked by stopper levers (46). First, for example, the rightmost nozzle (19) out of the three nozzles (19) supplies the tape component supply device (106) with the large component (7) to be taken out next.
), the right end solenoid (50) is energized, the stopper lever (46) is attracted, the claw part (47) is disengaged from the flange (35), and the vertically movable body (18) is unlocked.

Then, the vertically moving body 18) is driven by the motor (56).
The part (7) descends while being supported by the locking pin (58).
The parts are adsorbed by a vacuum source (not shown) in the vacuum passage (25) 2.
The component is attracted to the tip of the nozzle (19) through the vacuum passage (30) and rises.

Then, the solenoid (50) protrudes and the stopper lever (4
6) swings about the support shaft (51), the claw portion (47) engages the lower surface of the flange (35), and the vertically movable body 18) is locked. Next, the mounting head (12) moves and the center nozzle (19) is located above the supply device (106) that supplies the small part (7) to be taken out next. Similarly, the part (7) is attracted, and then the vertically movable body (18) is locked to the stopper lever (46).

Next, in the same way as described above, the left end nozzle (19) performs a suction operation for the small part (7) to be taken out next.

After the three nozzles (19) adsorb the component (7), the mounting head (12) is moved to the recognition camera (7) by the motor (15).
1) (71) Move to the sky. At this time, the rightmost nozzle (19) is located above the low-magnification recognition camera (71) on the right, and the center nozzle (19) is located above the high-magnification camera (71) on the left.

Then, the right end and center stopper levers (46) (46
) unlocks the vertically movable body (1g) (18) by energizing the solenoids (50) (50), and the right end and center vertically movable bodies (18) (18) descend by driving the motor (56). When the large component (7) attracted to the rightmost nozzle (19) is positioned at the focal position of the recognition camera (71), the nozzle (19) stops. Then, L E D (
76)... emits light and the light beams diffused by the unit diffuser plate (77) and the diffuser plate (26) are irradiated onto the component (7),
The recognition camera (71) recognizes the suction position and orientation of the component (7). Next, the small part (7) attracted to the central nozzle (19>) by the drive of the motor (56) is positioned at the focus position of the left recognition camera (71).

Then, the L E D (76)... in the necessary range around the central shaft (27) emits light, and the component (7) is emitted through the unit diffuser plate (77) and the diffuser plate (26). The part (7) is recognized by illumination. Next, the motor (
56), the mounting plate (49) moves upward, and the right end and center vertically movable bodies (18) move upward. Solenoid (50)
is demagnetized and the stopper lever (46) swings, thereby locking the vertically movable body (18).

After that, the mounting head (12) moves to the right in Fig. 3, and the left end nozzle (19) that is sucking the small part (7) is positioned above the left recognition camera (71). Then it stops. Then, the left end solenoid (50) is energized, the vertically movable body (18) is unlocked by the stopper lever (46), and the vertically movable body (18) is lowered by the drive of the motor (56), and the recognition camera (71) is moved. The component (7) to be attracted by the nozzle (19) is positioned at the focal point of the nozzle (19).

Then, the LED (76) around the shaft (27) on the left end
)(76)... emits light, and the recognition camera (71) recognizes the part (7). Thereafter, the vertically movable body 18) moves upward and is locked by the stopper lever (46).

In this way, the parts (7) are recognized by the recognition cameras (71) (71).
), the mounting head (12) moves 1 in the Y direction, and the X table (field is moved by the linear guide (84) through the rotation of the ball screw (82) driven by the motor (83)).
Move in the X direction along.

The part (7) is ranked based on the recognition result of the recognition camera (71) (71).

Further, if there is an angular deviation in the θ direction, the motor (65) rotates by an angle to correct the angular deviation, and the pulley (64)
The vertical movement guide body (62) is rotated along the rotation bearing body (61) via the timing belt (66) and the timing belt (67). At this time, the rotation of the rotation bearing body (61) causes the regulated member (43) to stop rotating (69).
> The nozzle (19) rotates by the correction angle. When the nozzle (19) rotates, the nut (37) rotates together with the shaft (27), but the rotation guide nut ( 36) does not rotate, and the shaft (27) is guided by the bearing (38) and rotates in the rotation guide nut (36).

After that, the right end solenoid (50) is energized, the stopper lever (46) is released, the nozzle (19) is lowered by the drive of the motor (56), and the printed circuit board (10) is moved.
The part (7) is attached to.

The nozzle (19) that has been installed is moved upward by the drive of the motor (56). After this, the vertically moving body moved upward18)
is locked by the stopper lever (46). Thereafter, the parts (7) adsorbed by the remaining two nozzles (19) are also mounted on the printed circuit board (10) in the same manner as described above. At this time, each vertically movable body (18) is completely locked to the stopper lever (46).

When the mounting operation of all three parts (7) is completed as described above, the mounting head (12) selects the next part (7) to be mounted.
Move to the parts supply section (6) to take out the parts.

Next, if the component (7) to be taken out is stored in three adjacent supply devices (106) and the diffuser plate (26) and nozzle (19) are for the component (7), the mounting head (
12) moves so that each nozzle (19) is positioned above each supply device (106) and then stops. Then, the stopper levers (46) of all three vertically movable bodies (1B) (18) (18) are unlocked, and the three vertically movable bodies (18) (1g) (18) are driven by the motor (56). Start descending at the same time. And each nozzle (19) is connected to the part (7).
), the vertically moving body (18) (18) (18) becomes 3
This upward moving stopper lever (46) is connected to the vertically moving body (18).
)(18) Lock (18).

After this, the mounting head (12) uses the component recognition camera (71)
After moving to the sky and performing the same recognition operation as described above,
It moves to the X table section (3) and performs the same component mounting operation as described above.

The above-mentioned operation is repeated to perform the component mounting operation, but in some cases, such as when the held nozzle (19) cannot pick up the component (7) to be taken out, one or more In some cases, only the two nozzles (19) attract the component (7) to attach the component. In some cases, the tool (24) may also be used as described above.
Replacement is subject to timeliness.

In addition, when the recognition camera (71) recognizes the part (7) sucked by the nozzle (19), if it is a defective product such as a bent lead or a floating part, it will not be attached to the printed circuit board (10) and will be rejected. It is placed in a box (90). When a defective part (7) is placed on the work receiving box (90), move the moving table (8) to prevent it from being placed on top of the previously placed defective part (7).
8) is driven by the motor (93) and the linear guide (94
) and then placed.

The defective parts (7) placed in the work receiving box (90) can be taken out by the worker, corrected, and reused.

For correcting defective parts (7), a separate correction station may be provided, and the parts may be automatically transferred from the work receiving box (90) to the station, corrected, and then reused.

When the mounting of components onto the printed circuit board (10) placed on the X table (81) is completed as described above, the board (10) is transferred to the discharge conveyor (4), and transports and discharges the substrate (10).

(G) Effects of the Invention As described above, the present invention allows a plurality of nozzles to pass through each of the illumination plate and the first diffusion plate, and further diffuses the diffused light passing through the first diffusion plate into each nozzle. Since the second diffuser plate is provided, it is possible to reduce the distance between the nozzles and make the mounting head into a single-type mounting head, and it is also possible to provide uniform illumination.

[Brief explanation of drawings]

Fig. 1 is a plan view of a component mounting device to which the present invention is applied;
The figure is a front view of the device, Figure 3 is a perspective view of the mounting head, Figure 4 is a longitudinal cross-sectional view of the vertically movable body, Figure 5 is a partially cutaway plan view of the lighting unit, and Figure 6 is the illumination unit. A partially cut-away front view, Figure 7 is a perspective view of the tool exchange section, Figure 8 is a perspective view showing the structure in which the tool table is attached to the moving platform, and the ninth factor is a perspective view of the tool exchange operation and machining product supply section. 11 to 20 are side views showing the tool exchange operation. (1)...Component mounting device, (7)...Chip components, (10)...Printed circuit board, (12)...Mounting head, (19)...Nozzle, (23)...・Lighting unit, <26)...Diffusion plate, (27)...Shaft, (71)...Component recognition camera, (74)...
Lighting board, (76)...LED, (77)...
...Unit diffuser plate.

Claims (1)

[Claims] (1) In a component mounting device in which a recognition device recognizes a component being sucked by a plurality of suction nozzles provided in a mounting head, and performs correction based on the recognition result to mount the component on a printed circuit board, an illumination plate through which each nozzle can move vertically and a plurality of light sources for emitting illumination light are disposed; a first diffuser plate that transmits and diffuses illumination light emitted from the light source; and a first diffuser plate located below the first diffuser plate and attached to each of the nozzles, and diffused light passing through the first diffuser plate. A component mounting device further comprising a second diffusion plate that further transmits and diffuses the light to illuminate the component attracted by the nozzle.