JPH02155244A - Feeder for chip - Google Patents

Abstract

PURPOSE:To exchange chip suppliers simply with the variation of the kinds of chips by a magazine, in which plate-shaped cassettes to which the chip suppliers are installed detachably are stacked and housed, and a cassette changer exchanging the cassettes. CONSTITUTION:When the kinds of chips are changed, a cylinder 26 is operated and clamping members 23 are turned upward, the state of the clamping of cassettes 5 set to a cassette holder 22 is released while the clamping section 47 of an arm section 44 comes near to the cassettes 5 and holds the cassettes, the arm section 44 is slid along a rail 42, and the cassettes 5 are housed in a magazine 11. A lifting gear 13 is operated and the magazine 11 is lifted and lowered, and the cassettes 5 in which desired chips are fitted are moved to the opposed position of the clamping section 47. Accordingly, the clamping section 47 holds the cassettes 5, the arm section 44 is slid again, and another cassette 5 is placed onto a cassette holder 21.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a chip supply device, and particularly to a chip supply device that is advantageous in supplying a wide variety of chips.

(Prior art) Chips to be mounted on a substrate such as a lead frame are mounted on a wafer ring, tray, etc. (hereinafter collectively referred to as a "chip supply body"), and are sucked into a nozzle of a transfer head. It is designed to be picked up, transferred and mounted on the board.

This type of chip supply body is set in a holder and is waiting at the supply position, but the holder is moved by an XY direction moving device so that the nozzle of the transfer head can land on and pick up a desired chip on the chip supply body. It is designed to slide in the XY force direction. In addition, when the type of chip mounted on the board is changed, or when the chips on the chip supply unit are out of stock, the changer is driven and a new chip supply unit stored in a separately provided magazine is installed. It is designed to be exchanged with

- (Problem to be solved by the invention) By the way, wafer rings and trays equipped with chips have different shapes depending on the type of chip, so they cannot be stored in a common magazine.
Each wafer ring or tray was stored in its own magazine. For the same reason, the holders in which these are set are also prepared to correspond to the shape of each wafer ring or tray. Therefore, in the past, when changing the wafer ring or tray due to a change in the type of chips mounted on the board, it was necessary to replace the magazine or holder. Since the operation of the device had to be stopped, there was a problem that the mounting efficiency could not be improved accordingly.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an apparatus that allows chip supply bodies such as wafer rings and trays to be easily replaced when types of chips are changed.

(Means for Solving the Problems) To this end, the present invention provides a plate-shaped cassette into which a chip supply body is removably mounted, a cassette holder into which this cassette is removably inserted, and a nozzle of a transfer head. Move this cassette holder in the X and Y directions so that it can land on the chips installed in the chip supply body.
A Y-direction moving device, a magazine that is located on the side of this cassette holder and stores the cassettes in a stacked manner, a lifting device for this magazine, and a reciprocating device between the cassette holder and the magazine to exchange cassettes. A chip supply device is constituted by the cassette changer.

(Function) According to the above configuration, chip supply bodies of different types are attached to cassettes having a common external shape and stored in a common magazine. When the type of chip is changed, by driving the changer, the chip supply body on the cassette holder that is no longer needed is stored in the magazine, and a new chip supply body is taken out from the same magazine.
Place it in the cassette holder.

(Example) Next, the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a chip supplier and its cassette, where l is a tray in the form of a substantially rectangular plate, and wafer rings 2 and 3 are in the form of a substantially disk and a substantially rectangular plate, respectively. These chip supply bodies are each equipped with different types of chips P, and have different external shapes. 5 is a plate-shaped cassette, and along both sides of the rectangular plate 6,
Retaining parts 7.7 are provided which are detachably attached to the supply bodies 1 to 3 by sliding the opposite side edges thereof, and an opening part 8 is formed in the center thereof. FIG. 2 is a cross-sectional view of the wafer ring 2 attached to the cassette 5,
0 is a pepper bond, and the bottle 10a is pushed down from the opening 8, and the chip P is pushed up.

The width of each supply body t-3 is the same as the spacing between the engaging parts 7, 7, and these supply bodies 1-3 can be mounted in a common cassette 5.

If the retaining parts 7, 7 are mounted on the plate 6 in a position-adjustable manner so that the interval between them can be adjusted, even supply bodies with different widths can be mounted. In addition, the opening 8 is an opening for pushing out and sinking a bottle that pushes up chips on the wafer ring, so in the case of a cassette exclusively for trays where pushing up with a bottle is not performed, the opening 8
does not need to be formed. Next, the overall structure of the chip supply device will be explained with reference to FIG.

Reference numeral 11 denotes a magazine in which cassettes 5 loaded with the above-mentioned different types of supply bodies 1 to 3 are stacked and stored. Reference numeral 12 denotes a mounting table for the magazine 11, which is supported by an elevating device 13 so as to be movable up and down. This elevating device 13 consists of a motor 14, a vertical feed screw 15, a feed nut 16, etc. When the motor 14 is driven, the table 12 is moved up and down. 17 is a guide rod. 20 is magazine 11
This table device is installed on the side of the table device, and its details will be explained next with reference to FIG.

Reference numeral 21 denotes a cassette holder in which the cassette 5 is set, which has a frame-shaped frame 22 as its main body, and a clamp member 2 that clamps and fixes the edge of the cassette 5 to the negative side thereof.
3 is provided. 24 is a spring member that urges the clamp member 23 downward, that is, in the clamping direction. 25 is a drive device for the clamp member 23, and is a drive device for the support frame 18.
(See FIG. 3), and a tapered cone 28 is attached to the tip of the loft 27 of the cylinder 26. The clamp member 23 is rotatably attached to a pin 30, and a roller 31 is attached to the rear surface thereof.

The cone 28 is in contact with the upper surface of the roller 31, and when the cone 28 protrudes, the roller 31 is pressed against the tapered surface of the cone 28, and the clamp member 23 rotates around the pin 30 to release the clamped state. When the cone 28 is retracted, the clamp member 23 clamps the edge of the cassette 5 by the spring force of the spring member 24.

The cassette holder 21 is supported by a support 35, and the support 35 is erected on an XY direction moving device 36°37. 38 and 39 are drive motors. The chip supply body 2 set in the cassette holder 21 is slid in the XY force direction by the drive of the XY direction moving device 36° 37, and the nozzle 40a of the transfer head 40 lands on a desired point on the supply body 2. The chip P is adsorbed and transferred and mounted on a substrate (not shown).

In FIG. 3, reference numeral 41 denotes a changer for the cassette 5, which includes a rail 42 arranged on the side of the magazine 11 and the cassette holder 21, a slider 43 that slides on the rail 42, and a slider 43 that projects from the slider 43. It consists of an arm portion 44 with a cylindrical shape. The rear end of the arm portion 44 is connected to a timing belt 45 disposed parallel to the rail 42.
When the motor 46 is driven, the arm portion 44 slides along the rail 42. A clamp section 47 that clamps the cassette 5 is attached to the tip of the arm section 44 . 48 is a cylinder that drives this clamp portion 47.

This device has the above-mentioned configuration, and its operation will be explained next.

Chip supplies 1 to 3 of different types are attached to a cassette 5 having a common external shape, and stored in a common magazine 11 in a stacked manner. Further, as shown in FIG. 3, a cassette 5 with a chip supply body 2 attached thereto is set in the cassette holder 21, and the XY direction moving devices 36 and 37 are driven to slide the cassette 5 in the XY force directions. Meanwhile, a desired chip P is picked up by the nozzle 40a of the transfer head 40 and transferred and mounted on the substrate.

Now, when the type of chip mounted on the board is changed, the cylinder 26 is operated to rotate the clamp member 23 upward, and release the clamped state of the cassette 5 set in the holder 22. , arm part 4
The clamp section 47 of No. 4 approaches the cassette 5 and clamps it, and then the arm section 44 is slid along the rail 42 to store the cassette 5 in the magazine 11.

Next, the lifting device 13 is activated to move the magazine 11 up and down, and the cassette 5 equipped with desired chips is moved to a position opposite the clamp section 47. Then, the clamp part 47 clamps this cassette 5, the arm part 44 slides along the rail 42 again, and the new cassette 5 is attached to the cassette holder 2.
1. Then, the cylinder 26 operates in the opposite direction, and the clamping member 23 clamps this cassette 5.
The mounting work by the transfer head 40 is restarted.

(Effects of the Invention) As explained above, the present invention provides a plate-shaped cassette into which a chip supply body is removably mounted, a cassette holder into which this cassette is removably set, and a nozzle of a transfer head that supplies chips. An XY direction moving device that moves this cassette holder in the XY force direction so that it can land on the chip equipped on the body, and a magazine that stores the cassettes in stacks on the side of this cassette holder. Since the chip supply device is composed of this magazine elevating device and a cassette changer that moves back and forth between the cassette holder and the magazine to exchange cassettes,
By mounting different types of chip supply bodies in a cassette having a common external shape, they can be stored in the same magazine and set in a common cassette holder. Therefore, when the type of chips mounted on the board is changed, the chip supply body is replaced by raising and lowering the magazine using a lifting device and supplying a cassette containing the desired chips to the changer. Unlike the conventional device described above, there is no need to replace the magazine or the holder of the chip supply body (it is possible to advantageously cope with changes in the type of chip).

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which FIG. 1 is a perspective view of a cassette and a chip supply body, FIG. 2 is a sectional view of the cassette, FIG. 3 is an overall perspective view of the chip supply device, and FIG. The figure is a perspective view of the table device. 1 to 3...Chip supply body 5...Cassette 11...Magazine 13...Elevating device 21...Cassette holder 36.37...XY direction moving device 40...Transfer head 40a...・Nozzle 41...changer

Claims (1)

[Claims] A plate-shaped cassette to which a chip supply body is removably attached, a cassette holder to which this cassette is removably set, and a transfer head nozzle that can land on the chips mounted on the chip supply body. An XY direction moving device that moves the cassette holder in the XY directions, a magazine that is located on the side of this cassette holder and stores the cassettes in a stacked manner, an elevating device for this magazine, and a device that moves between the cassette holder and the magazine. A chip supply device comprising a cassette changer that reciprocates and exchanges cassettes.