JPH0449280B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an automatic electronic component mounting apparatus that mounts electronic components previously stored in stakes at predetermined positions on a printed circuit board.

Configuration of Conventional Example and Its Problems As shown in the specific configuration of FIG. 2, the conventional electronic component automatic mounting apparatus includes a substrate moving section 102 that holds a printed circuit board 101 and positions it at a predetermined electronic component mounting position. , a moving table 103 on which a plurality of tapes holding electronic components in alignment are mounted, a predetermined electronic component is sucked from the moving table 103, and a printed circuit board 1
01 and a mounting head 104 for mounting at a predetermined position.

However, with the above configuration, the electronic components to be mounted are limited to those that are aligned and held on the tape, and the electronic components stored in the stakes cannot be automatically mounted.

OBJECTS OF THE INVENTION In view of the above-mentioned drawbacks, the present invention provides an automatic electronic component mounting apparatus that can mount electronic components housed in a stick.

Structure of the Invention The electronic component automatic mounting apparatus of the present invention includes a printed circuit board transport section that transports and positions a printed circuit board at a predetermined position, a plurality of stakes filled with a plurality of electronic components, and sequentially supplies the stakes to set positions. a plurality of rotary type component supply units that push up the electronic components in the stake, and a component push-up unit that is provided corresponding to each of the rotary type component supply units and that sequentially pushes up the electronic components in the stake; A mounting head that sucks and holds electronic components in a stake at a predetermined position and mounts them on a predetermined position on a printed circuit board; an X-Y drive section that mounts the mounting head and positions the mounting head at a predetermined position; ,
a drive control section that controls the operation of each of the parts, and the rotary type component supply section is arranged around a vertically supported rotary shaft and a plurality of rotary shafts arranged on the circumference of the rotary shaft; It is composed of a stake holder that holds each stake in a vertical direction, and a means for rotating the rotary shaft by a predetermined angle, and the component push-up section is configured to push the electronic components in the stakes held by the stake holder from below. It is composed of a push-up shaft and means for moving the push-up shaft in the vertical direction, and is used to automatically mount electronic components stored in the stake.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. 3 and the subsequent drawings.

Reference numeral 2 denotes a printed circuit board transport section that transports and positions the printed circuit board 1 to a predetermined position. 3 has a horizontal movement axis X axis and a movement axis Y axis, and is equipped with a mounting head 4, which moves back and forth and left and right to mount a predetermined electronic component at a set position on the printed circuit board 1. This is an X-Y drive unit that performs positioning. The mounting head 4 attracts and holds the electronic component at a set position, and mounts the electronic component at a predetermined position on the printed circuit board 1 in an arbitrary direction. Reference numeral 5 denotes a rotary type component supply section that stores the set electronic components and supplies the electronic components at the set position, and is composed of multiple sets of rotary type component supply sections 5a, 5b, 5c, and 5d, each of which has a corresponding component pusher. Raised parts 6a, 6b, 6c, 6
It holds d. Reference numeral 7 denotes a drive control section that controls operations related to electronic component mounting, such as the printed circuit board conveyance section 2X-Y drive section 3, mounting head 4, rotary component supply section 5, component push-up section 6, and the like.

The structure of the rotary component supply section 5 and the component push-up section 6 attached thereto will be explained with reference to FIGS. 5 to 9.

The casing 8 is attached to a machine body 9, and rotatably supports a rotary shaft 10 via ball bearings 12a, 12b and a driven axle 11 via ball bearings 13a, 13b, respectively. Reference numeral 14 denotes a driving wheel fixed to the shaft end 15a of a motor 15 attached to the housing 8, and forms a Geneva mechanism with a driven wheel 18 fixed to the driven axle 11 with magnetic pieces 16 and 17. 14a and 14b are recessed portions 18a and 18 of the driven vehicle.
b, 18c, 18d, and pins 19 and 20 are provided facing each other, and when rotated in the direction A, pin 19
When the pin 19 is engaged with the driven wheel fitting elongated hole 18e and rotated 180 degrees, the driven wheel fitting elongated hole 18e is displaced by 90 degrees. Pin 19,
20, driven vehicle fitting elongated holes 18e, 18f, 18g,
18h is set. A pulley 21 is fixed to the driven axle 11, and a pulley 23 fixed to the rotary shaft 10 is connected via a timing belt 22.
The rotation is transmitted by setting the speed reduction to 1/2. A plurality of stake holders 24 are each slidably supported on the rotary shaft 10, and any stake holder 24 is set so as to be at the component supply position B.
They are pressed by a compression spring 25, and have their respective upper limits set by stopper rings 26. Each stake 27 houses a predetermined electronic component, and its lower end is removably engaged with the stake holder 24, and its upper end is connected to the support cylinder 2 attached to the rotary shaft 10.
The support plate 29 is removably engaged with the support plate 29 which is connected to the support plate 8 . The light emitting side detector 30 and the light receiving side detector 31 are attached to a support 32 installed on the machine body 9 via a holding plate 33, and when any stake holder 24 is at the electronic component supply position B, the supporting plate 29 The light guide grooves 29i, 29j, 29k, and 29 provided on the upper surface of the support plate 29 determine whether or not a predetermined electronic component is present in a predetermined position of the electronic component passage holes 29a to 29h.
The light is projected onto the light guide groove located at the electronic component supply position at points m, 29n, 29p, 29r, and 29s, and communicated with the drive control section 7. The proximity detector 34 is attached to the housing 8, and when the prime mover 14 rotates approximately 180 degrees, the magnetic piece 16
Alternatively, it contacts the drive control section 7 in response to 17.

One end of the push-up shaft 35 is slidably engaged with a fixture 36 fixed to the machine body 9, and the other end is connected to the shafts 1 and 3.
A sliding body 39 slidably supported on the 7 shafts 2 and 38
It is fixed to . The drive belt 40 is attached to the mounting fixture 36
The power of the motor 41 fixed to the gear 4
2. A pulley that transmits the power for raising and lowering the sliding body 39 via the pulley 43, bolt 44, and mounting plate 45, and is rotatably supported by a lower mounting plate 46 fixed to the shafts 1, 37 and shafts 2, 38. 47 makes me nervous. The push-up shaft 35 has a plurality of stakes 2
The maximum stroke for pushing up the electronic components stored in 7 to the supply position B is set. 48 is fixed to the sliding body 39, and at the lower limit position, the lower mounting plate 4
6, and at the upper limit position, the photoelectric sensor 50 fixed to the fixture 36 is shielded from light to detect the lower limit position and the upper limit position of the push-up shaft 35. Contact 7. The above is the structure of the rotary component supply sections 5a to 5d and the component push-up sections 6a to 6d.

The structure of the mounting head 4 will be explained with reference to FIGS. 10 to 15.

Reference numeral 51 denotes a bracket that is attached to the Y-axis tip of the X-Y drive unit 3 and attaches the cylinder body 52 so as to be adjustable in the vertical direction. 53 is a vertical adjustment vault attached to the X-Y switching cylinder main body 54. The vacuum rod 55 slidably holds a suction rod 56 for suctioning and holding an arbitrary electronic component at its lower end, is equipped with a suction rod lower pressure spring 57, is provided with a suction rod lowering limit locking pin 58, and slides into a guide cylinder 59. It is movably and rotatably supported on a shaft and fixed to a guide rod 60. The lifting cylinder 61 slidably holds a piston 63 which is sandwiched between the cylinder body 52 and the X-Y switching cylinder body 54 via a spacing piece 62 and fixed to a guide rod 60, and has a compressed air inlet 61a for lowering the piston. , the piston-lifting compressed air inlet 61b is connected to the compressed air inlet 52a, 52b of the cylinder body 52, respectively, and the X-
A Y switching tooth 61c is formed at the upper end, and the guide rod 60
It holds a guide rod 65 that is slidably supported by a lever 64 fixed to the lever 64 . The driving claw bodies 1, 66 have claws 1, 67 removably fastened to the tips of the bolts 68, and are clamped between a sliding body 69 that is slidably supported on the guide tube 59 and a block 70 that is attached to the sliding body 69. It is rotatably supported by a fixed fulcrum pin 71, and a roller pin 72 is fixed thereto. The driven claw bodies 1, 73 are similar to the driving claw bodies 1, 66, and the driven claw bodies 1, 73 are similar to the driving claw bodies 1, 66.
74 is removably fastened and pivotally supported by a fulcrum pin 75 so as to be swingable. The roller 76 is the guide tube 5
It is rotatably supported by a roller shaft 77 fixed to 9. When the vacuum rod 55 rises, the stepped portion 5
5a comes into contact with the lower end surface 69a of the sliding body 69, overcomes the downward pressure of the compression spring 78, and pushes up the sliding body 69, causing the driving claw bodies 1, 66 and the driven claw bodies 1, 7 to
3 also rises, and the roller contact cam surface 66a of the driving claw body 1, 66 is constantly in contact with the roller 76 due to the pressure of the compression spring 79 interposed between the driving claw body 1, 66 and the driven claw body 1, 73, so that it moves in the C direction. to sway.
Roller engaging U-shaped portion 73a of driven claw body 1, 73
By engaging with the roller pin 72, the driven claw bodies 1, 73 are also set to swing in the D direction, and the vacuum rod 55 further rises, causing the claws 1,
67, the claws 2 and 74 are set so that the suction rod 56 correctly clamps the electronic component to be suctioned and held. The driving claw bodies 2, 80 and the driven claw bodies 2, 81 have exactly the same structure, and are set so as to properly clamp the electronic component at the upper limit position of the vacuum rod 55. 82 is a lock nut for adjusting the lowering limit position of the guide rod 60. 83 is lever 64
It is a magnetic piece attached to the The support plate 84 is attached to the X-Y switching cylinder main body 54, and when the guide rod 60 is positioned in the X direction, an X direction lower limit reed switch 85 is installed at a position that responds to the magnetic piece 83 at the lower limit position of the guide rod 60. X in position
A direction upper limit reed switch 86 is attached. The support plate 87 is attached to the X-Y switching cylinder main body 54, and when the guide rod 60 rotates 90 degrees and is positioned in the Y direction, the support plate 87 is placed at the lower limit position in the Y direction at a position that reacts with the magnetic piece 83 at the lower limit position of the guide rod 60. A reed switch 88 is installed and a Y-direction upper limit reed switch 89 is installed at the upper limit position. The X-Y switching piston 90 is slidably held in the cylinder portion 54a of the X-Y switching cylinder 54 and is mounted on a rack 90a.
is meshed with the X-Y switching tooth 61c of the lifting cylinder 61, and the compressed air is fed in the E direction by air pressure from the compressed air inlet 54b, rotating the lifting cylinder 61 in the F direction. The suction rod 56 is fed under pressure in the G direction and rotates the lifting cylinder 61 in the H direction, but due to the structure described above, the suction rod 56 is connected to the lifting cylinder 6 via the guide rod 65 lever 64 guide rod 60 vacuum rod 55. It makes exactly the same turn. 9
1 is an X formed at the upper end of the lifting cylinder 61
This is an X direction position stopper that comes into contact with the direction contact surface 61d, and is attached to the cylinder body 50. 92 is a Y-direction position stopper that comes into contact with the Y-direction contact surface 61e of the lifting cylinder 61;
It is attached to the cylinder body 50. The structure of the main part and the operation of each part have been explained above, and the related operation will be explained.

A plurality of stakes 27 of the rotary component supply sections 5a to 5d are filled with predetermined electronic components in advance, and the mounting head 4 is connected to the X-Y drive section 3.
As a result, the suction rod 56 is moved to the electronic component supply position B, and the suction rod 56 is lowered by air pressure fed from the compressed air inlet 50a, the X direction lower limit reed switch 85 detects the lower limit position, and the vacuum pressure inlet of the guide rod 60 is moved to the lower limit reed switch 85. Electronic components are attracted and held by the vacuum pressure of 60a. The guide rod 60 begins to rise, pushing up the sliding body 69 at the stepped portion 55a, and moving the driving claw bodies 1, 66, 2,
80, the driven claw bodies 1, 73, 2, and 81 swing and close to restrict and hold electronic components from four directions. The X-direction upper limit reed switch 86 detects that the guide rod 60 has reached the upper limit. At this time, by sensing the degree of vacuum within the guide rod 60, it is determined whether the suction rod 56 has correctly suctioned and held the electronic component. When rotating in the Y direction, use X-Y
Compressed air inlet 54c of switching cylinder body 54
Air is fed under pressure to rotate the guide rod 60 in the Y direction, and the Y direction upper limit reed switch 89 detects this and communicates this to the drive control section 7. The mounting head 4, which has been moved to the set position by the X-Y drive section 3, is lowered by the guide rod 60 to a predetermined position on the printed circuit board 1, the Y-direction lower limit reed switch 88 detects the lower limit position, and the drive control section 7 moves the suction rod to the lower limit position. Guide rod 60 for mounting electronic components on printed circuit board 1 by 56
Detected by the degree of vacuum inside. The guide rod 60 is raised by switching the air circuit as described above, the Y-direction upper limit reed switch 89 detects the upper limit position, the guide rod 60 is rotated 90 degrees in the C direction, and the X-direction upper limit reed switch 86 detects its arrival. drive control section 7
Contact. On the other hand, the rotary parts supply section 5
When the light emitting side detector 30 and the light receiving side detector 31 detect that no electronic component is present, the motor 41 is activated and the push-up shaft 35 pushes up the electronic component inside the stake 27. When electronic components are detected by the light emitting side detector 30 and the light receiving side detector 31, the motor 41 is stopped. In this way, the rotary component supply section 5 sequentially supplies the electronic components in the stake, and when the photoelectric sensor 50 detects the upper limit position of the push-up shaft 35, the component push-up section motor 41 is rotated in reverse to move the push-up shaft 35. is lowered, the photoelectric sensor 49 detects that the lower limit has been reached, and contacts the drive control section 7. At the same time, the motor 15 of the rotary type parts supply section 5 is activated, the motive wheel 14 rotates 180 degrees in the direction A, and the rotary Rotate the shaft 10 in the I direction by 1/4 rotation of the prime mover, i.e.
The predetermined stake is transferred to the electronic component supply position B by rotating 45'. The proximity detector 34 is the motive vehicle 14
180° rotation is detected and the drive control unit 7 is notified.

Finally, the related operations of the main parts constituting this device will be explained with reference to the timing diagram of FIG. 16. This timing table shows one cycle of electronic component mounting.
Let one cycle be from t ₀ seconds to t ₇ seconds.

The X-Y drive section 3 is at the origin position _t0 . In the mounting head 4, the vacuum rod 55 is at the upper limit position in the X direction.
The rotary component supply units 5a to 5d are loaded with predetermined electronic components, and are pushed up to the electronic component supply position B by the push-up shafts 35 of the component push-up units 6a to 6d, and the light emitting side detector 30 and the light receiving The side detector 31 detects and waits. Printed circuit board transfer unit, 2
is a preset J on which a predetermined printed circuit board 1 is mounted.
in position.

When a command to start mounting is issued, the printed circuit board transfer section 2 carries the printed circuit board 1 to a predetermined position and performs the position regulation of the printed circuit board, and the drive control section 7 detects the carrying in of the printed circuit board and the position regulation, and then Move the Y drive unit 3 to a predetermined electronic component supply position B,
The vacuum rod 55 of the mounting head 4 descends, picks up the electronic component at the lower limit position, and rises to remove the driving claw bodies 1, 6.
6, 2, 80, and the driven claw bodies 1, 73, 2, 81, the X-Y drive unit 3 moves to a predetermined mounting position on the printed circuit board 1, and the vacuum rod 55
goes down, electronic components are mounted in the X direction, and then goes up. In the case of mounting in the Y direction, when the vacuum rod 55 picks up the electronic component and moves up, it rotates in the Y direction, and the Y direction upper limit reed switch 89 detects this, moves to the mounting position as described above, and mounts it on the printed circuit board 1. If it rises, it returns to the X direction, and the X direction upper limit reed switch 86 detects this.When the component supply rises, the mounting head 4 picks up the electronic component, and when the light receiving side detector 31 determines that no component is detected, the component push-up section The push-up shaft 35 of No. 6 starts pushing up and stops pushing up at that position when the light-receiving side detector 31 of the rotary component supply section 5 detects the component. In this manner, one cycle of electronic component mounting is performed.

When there are no parts to be supplied, the push-up 35 reaches the upper limit, the photoelectric sensor 50 detects this, the push-up shaft 35 descends, the photoelectric sensor 49 detects the lower limit, and communicates this to the drive control unit 7. . The rotary component supply section 5 rotates to position the next stake at the electronic component supply position B, and the proximity detector 34 communicates this to the drive control section 7. The push-up shaft 35 rises to push up the electronic component, and when the light-receiving side detector 31 detects that it has been pushed up to the supply position, the push-up shaft 35 stops rising.

Effects of the Invention As described above, the electronic component automatic mounting apparatus of the present invention includes a printed circuit board transport unit that transports and positions a printed circuit board at a predetermined position, and a plurality of stakes filled with a plurality of electronic components, and the electronic component automatic mounting device of the present invention stores a plurality of stakes filled with a plurality of electronic components, and holds a plurality of stakes filled with a plurality of electronic components. a plurality of rotary component supply sections that sequentially supply the stakes; a component push-up section that is provided corresponding to each of the rotary component supply sections and that sequentially pushes up the electronic components in the stakes; A mounting head that sucks and holds the electronic components in the pushed-up stake at a predetermined position and mounts them on a predetermined position on a printed circuit board; Y
a drive unit; and a drive control unit that controls the operation of each of the parts, and the rotary component supply unit is provided with a rotary shaft that is vertically supported and rotatable, and a plurality of parts arranged on the circumference of the rotary shaft. and a means for rotating the rotary shaft by a predetermined angle; It consists of a push-up shaft that pushes up components from below and a means for moving this push-up shaft in the vertical direction.It can automatically mount electronic components stored in the stake, and its practical effects are great. It is what it is.

[Brief explanation of the drawing]

Figures 1A and 1B are perspective views showing examples of the shape of electronic components;
Fig. 2 is a perspective view of a conventional mounting apparatus, Fig. 3 is a plan view of a mounting apparatus according to an embodiment of the present invention, Fig. 4 is a front view of the same mounting apparatus, and Fig. 5 is a rotary component supply unit. 6 is a plan sectional view of the main part of the same, FIG. 7 is a plan view of the rotary type parts supply section, and FIG. 8 is a side sectional view showing the relationship between the component push-up section and the rotary type parts supply section. , FIG. 9 is a front view of the component pushing part, FIG. 10 is a side sectional view of the head, FIG. 11 is an enlarged front view of the driving claw main body and driven claw main body, and FIG. 12 is a plan sectional view of the same essential parts. Fig. 13 is an enlarged front view of the driving claw main body and driven claw main body, Fig. 14 is a plan view of the mounting head, Fig. 15 is a plan sectional view of the main parts of the mounting head, and Fig. 16 is a timing diagram of the device. . 1...Printed circuit board, a, b...electronic parts, 2
...Printed circuit board transport section, 3...X-Y drive section,
4...Mounting head, 5a-5d...Rotary type component supply section, 6a-6b...Component push-up section, 7...
...Drive control unit, 27...Status.

Claims (1)

[Claims] 1. A printed circuit board transport unit that transports and positions a printed circuit board to a predetermined position, and a plurality of rotary types that store a plurality of stakes filled with a plurality of electronic components and sequentially supply the stakes to set positions. A component supply section, a component push-up section that is provided corresponding to the rotary component supply section and that sequentially pushes up the electronic components in the stake; A mounting head that suctions and holds at a predetermined position and mounts it on a predetermined position on a printed circuit board, and an X-Y mounting head that mounts the mounting head and positions the mounting head at a predetermined position.
a drive unit; and a drive control unit that controls the operation of each of the parts, and the rotary component supply unit is provided with a rotary shaft that is vertically supported and rotatable, and a plurality of parts arranged on the circumference of the rotary shaft. and a means for rotating the rotary shaft by a predetermined angle; An electronic component automatic mounting device comprising a push-up shaft that pushes up components from below and means for moving the push-up shaft in the vertical direction.