JPH0378297A - Device for mounting parts - Google Patents

Abstract

PURPOSE:To provide a mounting device capable of firmly holding tools irrespective of an increased number of tool replacements by providing a vacuum channel between inner and outer cylinders so as to attract a tool by vacuum. CONSTITUTION:A vertical moving body is lowered to make a vacuum channel ready for suction. A suction pad 100 with a tool 24 sucked through a vacuum channel 104 is raised to attach the tool to a shaft 27. The tool 24 is held in the shaft 27 by a leaf spring 32 and the suction through the suction channel 31. Thereafter, the pad 100 stops suction and goes downward, while the vertical moving body 18 goes upward. In this manner, it is possible to ensure tool holding even if the frequency of tool replacement increases.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a component mounting device that vacuum-chucks components and mounts them onto a printed circuit board using a nozzle included in a tool exchangeably held in a mounting head. .

(b) Prior art As a prior art of a component mounting device that replaceably holds a tool having a suction nozzle of this kind, Japanese Patent Laid-Open No. 62-14
There is one disclosed in Japanese Patent No. 5899. According to this, a tool having a nozzle is held on the transfer head by plate springs attached to both sides of the transfer head engaging with recesses formed in the tool, and when replacing the tool, , engage the claw of the nozzle holder with the hook formed protruding from the tool, raise the transfer head, push the leaf spring outward against the biasing force, and remove the tool. Install it by lowering it to spread out the leaf spring.

(c) Problems to be Solved by the Invention However, in the prior art described above, the leaf spring is pushed out each time the tool is replaced, so the leaf spring becomes flat and the biasing force weakens, and the leaf spring and the leaf spring of the tool are pushed out. The drawback is that the parts wear out and the tool cannot be held securely.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to ensure that a tool is retained even if the number of tool exchanges increases.

(d) Means for Solving the Problems Therefore, the present invention provides a component mounting device that vacuum-chucks components and mounts them on a printed circuit board using a nozzle included in a tool that is replaceably held in a mounting head. an inner cylinder having a component vacuum passage inside that communicates with a component suction vacuum passage of the tool; and an outer cylinder into which the inner cylinder is inserted and which forms a tool vacuum passage between the inner cylinder and holds the tool by suction. It has been established.

(e) The tool vacuum passage formed between the working inner cylinder and the outer cylinder allows
The outer cylinder connects the component vacuum passage in the inner cylinder with the component suction vacuum passage in the tool to hold the tool by vacuum suction.

(to) Examples 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 FIGS. 1 to 3, (12) (12) is a mounting head, which is attached to head nuts (14) (14) fitted to head ball screws (13) (13), Driven by the head drive motor (15) (Is), the ball screws (13) (13) rotate and are guided by the head linear guides (16) (16) (16) (16) to move in the Y direction. , the chip components (7) supplied from the component supply section (6) are placed on the printed circuit board (1) by the X table section (3).
0).

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) and a nut (37) on which a flange (35) is formed. 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 vibrator (39) reaches, and a part of the groove (40) is open (4OA).
27) rotates the rotation guide nut (36) by the rotation mechanism (21).
) even if the tool vacuum passage (31) rotates through the opening (
4OA) and the vacuum vibrator (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) (4)
2) 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).Vacuum vibrator (3
9) 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 that has a claw part (47) at the lower end, and is attached to a mounting plate (49) attached to the head nut (14).
The upper end is rotatably attached to a solenoid (50) provided in the main body, and the solenoid (50) swings about a support shaft (51) as a back and forth movement of the solenoid (50).

That is, when the solenoid (50) protrudes in a demagnetized state, the claw portion (47) engages with the lower surface of the flange (35>) and restricts the downward movement of the vertically movable body (18).
When the solenoid (50) is energized and retreats, the claw (47) comes off from the plunger (35) and the vertically 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) moves from the linear guide (53) provided on the mounting plate (49). ) (53). The vertically movable plate (57) has locking pins (5B) (58) (5B) that engage with the lower surface of the flange (35) and support the vertically movable bodies (18), (18), and (18), respectively, at three locations on the vertically movable plate (57). ), and when the stopper lever (46) is unlocked, the vertically movable body (18) moves vertically while being 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 rotating 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 fitted to the outer periphery of the lower part of the vertical movement guide body (62), and a mork timing pulley (66) is fitted to the lower part of the nozzle rotation motor (65) installed on the block (60). 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) are formed with a rotation stopper 43 having a rotation stopper 43 fixed to the shaft (27).
) is engaged with the rollers (68) (6g) 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), 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 the bins (75) (75) (75) (7
5) are placed at the four corners. (74) is the nozzle (1
9 bar 19) (19) on top of the bottle (75) (75) (75)
(75) LED for light emission installed on
This is a lighting board with a large number of (76) arranged on the bottom surface, and the part 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 placed at a certain interval between the bins (75) (75) (75).
) (75), and transmits and diffuses the light emitted by the LED (76) to equalize the brightness and darkness 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 more uniform light beam, which is then irradiated onto the chip component (7). Unit diffuser plate (7
7) 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 nagging component (7), the part where the shaft (27) of the unit diffuser plate (77) passes through For this reason, the small part (7) has a unit diffuser plate (
Since the diffused light from unit diffuser plate (77) is no longer applied, the diffuser plate (26) functions to transmit and diffuse the diffused light from 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>, it takes up less space. If the diffuser plates (26) are for parts of normal size, 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) can be held by the vertically movable bodies (18) (18) at both ends. The lighting board (74) requires a larger area for each part (7) than the diffuser plate (26), so if a lighting unit is provided for each vertically moving body (18), the nozzle (19) The space between the lines becomes wider.
E D (76)... are arranged and integrated. When recognizing parts for each nozzle (19), the necessary range of LEDs
Although the LED (76) is designed to emit light, the entire LED (76) may emit light each time a component is recognized.

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 pole 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 mounting head (12) is moved in the X direction by the movement of the mounting head (12) in the Y direction and the movement of the X table (81) in the X direction.
It is mounted on the printed circuit board (1o) 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). This 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). 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 the other one. An elongated hole (80) into which is inserted is bored.

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

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).
) moves 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 a base (96), and a pad holding member is connected to a rod (97) of the cylinder (95) via an attachment piece (98). (
99) is installed.

The pad holding member (99) is cylindrical and has a suction pad (100) penetrated therein for exchanging the tool (24), but the suction part of the suction pad (100) is widened to form a stepped part, and the suction pad (100) is expanded to form a step. 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 the chip components (7) housed in the tape (105). has been configured. There are many types of chip components (7) supplied by the tape component supply device (106), and usually one supply device (106) is used.
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) The installation interval of (18) (1g) matches the installation interval of the feeding 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 motor (15) and is mounted on the linear guide (1) via the ball screw (13) and nut (14).
6) in the X 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 the tool (2) of the mounting head (12)
The recess (86) on which the suction pad (10
0), as shown in Figure 11.

Then, the stopper lever (46), which is engaged with the flange (35) of the vertically movable body (18) holding the tool (24) to be replaced, is disengaged from the plunger (35) by the operation of the solenoid (50). Then, the pole 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). A vertically moving object (
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 moves against the urging 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 moving body (1
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>
104) while adsorbing the shaft (27)
Fit them together as shown in Figure 18. Then, tools (24
) is the urging 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 large parts (7), and the central nozzle (19) and diffuser plate (26) are for small parts (7).
), and the nozzle (19) and diffuser plate (26) on the left end are for a small part (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 portion (47) is disengaged from the flange (35), and the vertically movable body (18) is unlocked.

Then, the vertically moving body 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 around the support shaft (51), the claw portion (47) engages the lower surface of the flange (35), and the vertically moving body 18) is locked.6 Next, the mounting head (12) moves. The center nozzle (19) is located above the supply device (106) that supplies the small part (7) to be taken out next, and picks up the part (7) in the same way as the right-most nozzle (19) described above. Thereafter, the vertically movable body (1g) 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 vertical movable bodies (18) (18) by energizing the solenoids (50) (50), and the right end and center vertical movable bodies (1g) (18) descend by driving the motor (56). Then, when the large part (7) attracted by the rightmost nozzle (19) is located at the focal position of the recognition camera (71), the nozzle (19) stops. L E D (7
6) ... emits light and the light beams diffused by the unit diffuser plate (77) and the diffuser plate (26) are irradiated onto the component (7), and the recognition camera (71) detects the adsorption position and orientation of the component (7). Recognize. 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 LEDs (76) in the necessary range around the central shaft (27) emit light, and the component (7) is illuminated through the unit diffuser plate (77) and the diffuser plate (26). 7) is recognized. Next, the mounting plate (49) moves upward by the drive of the motor (56>), and the vertical moving body (18) at the right end and center moves upward.The solenoid (50) is demagnetized and the stopper lever (46) swings. As a result, the vertically moving body 18) is locked.

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).After this, the vertically movable body (18) moves upward and is locked to the stopper lever (46).

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

Based on the recognition results of the recognition cameras (71) (71), the position (original) of the part (7) moves by a distance corrected for the amount of deviation.

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)
(66) and the timing belt (67) to rotate the vertical guide body (62) along the rotary bearing body (61) - At this time, as the rotary bearing body (61) rotates, The regulated member (43) is prevented from rotating (69
), and 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 with the rotation guide nut (36). 36) It will rotate inside.

After that, the right end solenoid (50) is energized, the stopper lever (46) releases the restriction, the nozzle (19) is lowered by the drive of the motor (56), and the component (7) is mounted on the printed circuit board (10). be done.

The nozzle (19) that has been installed is connected to the motor (56) (7).
) Moves upward due to ffi movement. Thereafter, the vertically movable body 18) that has moved upward is locked by the stopper lever (46). After that, the parts (7) that were attracted to the remaining two nozzles (19)
) is also attached to the printed circuit board (10) in the same manner as described above. At this time, each vertically moving body (18) is connected to the stopper lever (
46).

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

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 (18) (18) (18) are unlocked, and the three vertically movable bodies (1g) (18) (18) are driven by the motor (56). Start descending at the same time. And each nozzle (19) is connected to the part (7).
), all three vertically movable bodies (18 bar 18) (18) move upward, and the stopper lever (46) picks up the vertically movable body (1g>
(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 There are cases where only the two-piece nozzle (19) attracts the component (7) and the component is mounted.

In some cases, the tool (24) may be replaced in a timely manner as described above.

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 By doing as described above, the present invention ensures that the tool is retained even if the number of tool exchanges increases.

[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, and Figure 3 is a perspective view of the installation.
FIG. 4 is a longitudinal sectional view of the vertically movable body, FIG. 5 is a partially cutaway plan view of the lighting unit, FIG. 6 is a partially cutaway front view of the lighting unit, and FIG. 7 is a perspective view of the tool exchange section. Fig. 8 is a perspective view showing the structure in which the tool table is attached to the moving table, Fig. 9 is a side view of the main parts of the tool exchange section, Fig. 10 is a perspective view of the parts supply section, and Figs. 11 to 20. FIG. 3 is a side view showing a tool exchange operation. (1)...Component mounting device, (12)...Mounting head, (18)...Vertical moving body, 19)...Nozzle, (24)...Tool, (z5)... Parts suction vacuum passage, <27)...shaft, (28)...
Inner cylinder, <29)...Outer cylinder, (30)...Parts vacuum passage, (31)...Tool vacuum passage.

Claims (1)

[Claims] (1) In a component mounting device that vacuum-chucks components and mounts them on a printed circuit board using a nozzle included in a tool that is replaceably held in a mounting head, a component vacuum passage that communicates with the component suction vacuum passage of the tool; an inner cylinder having a
A component mounting device comprising: an outer cylinder into which the inner cylinder is inserted and which forms a tool vacuum passage between the inner cylinder and the inner cylinder to suction and hold the tool.