JPH0693556B2 - Electronic component supply device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component supply device for mounting an electronic component on a printed circuit board by a random access method for shortening the time for supplying the electronic component.

Configuration of Conventional Example and Problems There are the first conventional random access type electronic component mounters.
As shown in the conceptual diagram in the figure, the printed circuit board 2 is held on the XY table 1, and the electronic component 5 is taken out from the component supply unit 4 by the head 3 and mounted on the printed circuit board 2. In the component supply unit 4, various electronic components 5, 5 ′, 5 ″ ...
, And the cassette 6 having a mechanism for feeding one pitch at a time is driven by a feed 7 provided on the head 3 to feed it to a take-out position 8. The component supply unit 4 moves in the X direction and positions different types of electronic components 5, 5 ', 5 "... at the pick-up position 8. The electronic components 5, 5' ..., XY table 1 position Selection is done by NC command.

However, in the above-mentioned configuration, when described with reference to the timing charts of FIG. 1 and FIG.
When mounting 5 ′, 5 ″ ..., the moving time of the component supply unit 4 is affected by the mounting time of the mounting machine, a is the timing of the mounting head, and times T ₁ to T ₂ are electronic parts. Vacuum suction 5 from cassette 6. T ₂ to T ₃ swing from cassette 6 onto printed circuit board 2. Printed circuit board 2 from T ₃ to T _4.
The electronic component 5 is mounted on.

Reference numeral b is a feed timing, and the next electronic component 5 is sent to the take-out position 8 between T ₂ and T ₅ . c is the timing at which the component supply unit can move, when T _{1 to} T ₂ is vacuum-adsorbed and T ₂ to
It cannot be moved when feeding T ₅ . If the time for one cycle T _{1 to} T ₄ of the mounting machine is shortened, when the component supply unit 4 is moved, the movable time is eventually shortened and the time cannot be shortened. In addition, if each cassette 6 is individually provided with a 1-pitch drive feed actuator, the apparatus becomes complicated and the feed timing is required individually, which is not practical.

In view of the above-mentioned drawbacks, the present invention has different electronic components to be mounted next, and when they are set in adjacent cassettes, the adjacent cassettes are fed at the timing of vacuum suction, Immediately after feeding by vacuum suction, the component supply unit can be moved immediately, and the component supply unit movement time can be set longer.When shortening the mounting cycle of the random access type mounting machine, the influence of the component supply unit movement time An electronic component supply device capable of reducing the size is provided.

The electronic component supply device of the present invention has a plurality of cassettes provided with taped electronic components and a ratchet mechanism portion capable of intermittently feeding the electronic components, and provided at equal pitches in the horizontal direction, and this cassette. It consists of a plurality of feed parts that are provided facing each other and can drive the ratchet mechanism part of the cassette. If it is, the ratchet mechanism part of the other cassette is configured to be driven by the feed part at the timing of taking out the electronic parts this time, and the moving time of the part supply part is set to be long in the random access mounting machine. Therefore, the time for one cycle of the mounting machine can be shortened.

Description of Embodiments An embodiment of the present invention will be described below with reference to the drawings.

FIG. 3 shows a schematic diagram of an electronic component mounting apparatus in an embodiment of the present invention. 1 is an XY table, 2 is a printed circuit board, 4 is a component supply unit, and electronic components 5 are taped to a tape 9 having feed holes of equal pitch and a component storage unit.
Are stocked and a cassette 6 is provided. Three
Is a head, and is supported by a lever 11 which can be swung by a cam (not shown) about the shaft 10 and has a hollow shaft 12 which can be swung up and down by the cam (not shown) via the lever. A vacuum generator (not shown) is connected to the tube 13 so that the electronic component 5 is vacuum-sucked by the nozzle portion at the lower end of the hollow shaft 12. Reference numeral 14 is a chuck that regulates the posture of the vacuum-adsorbed electronic component 5.

Reference numeral 15 is a feed composed of three stations, which is driven up and down by a cam (not shown) via a rod 16 and a lever 16 ', and when the feed lever 17 of the ratchet feed mechanism of the cassette 6 is pushed down, the tape 9 Feed 1 pitch.
FIG. 4 is a detailed sectional view of the feed 15. The feed lever 18 is supported by a feed body 20 so as to be swingable by a pin 19, and a piston 22 is attached to a cylinder portion 21 of the feed body 20.
Is supported slidably in the horizontal direction by pneumatic driving, a pin 23 is provided at the tip of the piston 22, and the pin 23 fits in the elongated hole 24 of the feed lever 18, and the horizontal movement of the piston 22 causes the feed lever 18 to move to A. The oscillating operation of ~ B is performed.

Reference numeral 25 is a compressed air inlet, 26 is a packing, 27 is a return spring, and 28 is a bush.

On the other hand, the tape 6 is fed to the cassette 6 by the tape feeding claw 30 integrated with the ratchet feeding mechanism 29.
Reference numeral 12 is a hollow shaft nozzle. Reference numeral 5 is an electronic component.

FIG. 5 is a plan view of the feed 15 and the cassette 6, and the feed levers of the ratchet of the cassette 6 provided at equal pitches.
Feed levers 18, 18 ', 18 "are provided on the upper side of 17, respectively. The operation will be described with reference to the timing charts of FIGS. Mounting operation b'is a feed operation, and T _{1 to} T ₂ , T ₂
Up and down movements are performed twice ~ T ₅ in succession. d is the case where the electronic components 5 of the same kind are successively obtained and mounted, and the feed lever 18 of FIG.
There for driving and feeding behavior ratchet 29 in the vertical movement of the T ₂ through T ₅ for there b 'to position A in Figure 4. T _{2 to} T _{5 of} d is the time during which the compressed air flows into the cylinder 21 and pushes the piston 22. The feed levers 18 'and 18 "are in the B position and do not perform the feeding operation.

e is a case where different kinds of electronic components 5 ′ or 5 ″ are mounted next, and T _{1 to} T ₂ while the electronic component 5 is vacuum-sucked by the hollow shaft 12.
During performs driving to feed work feed lever 18 'or 18 ", then performs the moving operation of the component supply section 4 of f. In this case the feed time T ₂ compared to c in FIG. 2 through T ₅
Will take a long time to travel.

As described above, according to the present invention, in the mounting machine of the random access system, by providing a plurality of feeding portions provided facing the cassette, and performing the feeding operation of the adjacent cassettes at the timing of vacuum suction, The feature is that the component supply unit can be moved immediately after the vacuum suction, and the movement time can be set long, and the one cycle time of the mounting machine can be shortened.

[Brief description of drawings]

FIG. 1 is a conceptual plan view of a random access type mounting machine,
FIG. 2 is a timing chart diagram in a conventional example, FIG. 3 is a schematic sketch of an embodiment of the present invention, FIG. 4 is a detailed sectional view of a feed portion, FIG. 5 is a plan view of the feed portion, and FIG. It is a timing chart figure in one Example of the present invention. 4 ... parts supply part, 5,5 ', 5 "... electronic parts, 6 ... cassette, 15 ... feed part, 18 ... feed lever, 21
...... Cylinder, 22 ...... Piston, 29 ...... Ratchet mechanism.

Claims (1)

[Claims] 1. A plurality of cassettes having a taped electronic component and a ratchet mechanism portion capable of intermittently feeding the electronic component and provided at equal pitches in the horizontal direction, and a plurality of cassettes provided so as to face the cassettes. If the electronic component that is composed of multiple feed units that can drive the ratchet mechanism unit and is to be taken out next is set in a cassette other than the cassette that has the electronic component that is taken out this time, the electronic component of this time An electronic component supply device in which a ratchet mechanism portion of the another cassette can be driven by the feed portion at a timing of taking out.