KR19990074062A - Microchip positioning device and method - Google Patents

Abstract

The present invention relates to a microchip mounting apparatus, and in particular, a microchip position that can be positioned so as not to be damaged without affecting the quality of the microchip and can easily and accurately determine the position even if the size of the microchip is very small. Regarding the determining device and method thereof,

An electric motor, a plurality of cams connected to the motor and rotated, a clamp connected to the cam and moving backward and backward according to the rotation of the cam, and a clamp to determine the position of the microchip, and a moving distance of the clamps according to the size of the microchip. And a control unit for controlling the rotation of the electric motor.

Description

Microchip positioning device and method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microchip mounting apparatus, and more particularly, to a microchip positioning apparatus and method for mounting a circuit board after positioning a microchip in a wafer state from a supply apparatus.

The conventional microchip positioning apparatus includes a microchip seating means on which the microchip 1 is seated, an equilibrium holding means for allowing the microchip seating means to be in equilibrium, and the microchip seating as shown in FIG. A plate 2 interposed between the means and the equilibrium holding means, positioning means for determining the position of the microchip 1 supported by the plate 2 and seated on the microchip seating means, and the equilibrium maintaining And a base portion 3 for supporting the means and the positioning means.

Here, the microchip seating means is fixed to the top of the plate 3 as shown in Figure 3 seating block (4) on which the microchip 1 is seated, and the microchip (1) on the seating block (4) When seated, the interior 5 of the seating block is composed of a fitting 6 to be in a vacuum state.

In addition, the balance maintaining means is a tension spring (7) fixed between the base portion (3) and the lower end of the plate (2) to which the seating block (4) is fixed, as shown in Figures 2 and 4, Three fixing bolts (8, 9, 10) fixed to the lower end of the plate (2) around the seating block (4) to move the plate (2) up and down vertically, and each of the fixing bolts It consists of three nuts 11 and 12 which fix (8, 9, 10) to the base part 3. As shown in FIG.

As shown in FIGS. 5 to 6, the positioning means includes a motor 13 as a power source, a shaft 14 that is rotated by the power of the motor 13, and the shaft 14 rotates. A first, second, and third microchip driving unit for linearly moving and spaced apart from each other and linearly moving the microchip 1 seated on the microchip seating means and determining the position of the microchip 1; It consists of a sensor 27 for detecting the initial rotational position of the shaft.

Here, the microchip drive unit cams 15, 19, 23 press-fitted into the shaft 14, bearings 16, 20, 24 in contact with the cams 15, 19, 23, and the bearings ( 16, 20, and 24 are in contact with the cams (15, 19, 23) and the springs (17, 21, 25) for linear movement, and the bearings (16, 20, 24) are integrated with the cam ( It consists of clamps 18, 22 and 26 which are linearly moved by 15, 19 and 23 and are in contact with the microchip 1 so that the position of the microchip 1 is determined.

Referring to the operation of the conventional microchip positioning device configured as described above in detail as follows.

When the microchip supply device mounts the microchip 1 on the seating block 4, the interior 5 of the seating block is vacuumed by the fitting 6.

The operator rotates the three adjustment bolts (8, 9, 10) to equilibrate the plate (2) on which the seating block (4) is fixed, wherein the tension spring (7) is an elastic force to the plate (2) It is possible to finely adjust the balance of the plate 2 because the adjustment bolt (8, 9, 10) is moved vertically vertically while rotating.

As described above, after adjusting the plate 2 to be balanced, the fixing bolts 8, 9 and 10 are fixed to the base part 3 by rotating the nuts 11 and 12.

In the above state, when the motor 13 is driven and the shaft 14 rotates once, the position of the microchip 1 is determined, and the first, while the shaft 14 rotates once, The first clamp 18, the third clamp 26, and the second clamp 22 by the springs 17, 21, and 25 while the second and third cams 15, 19, and 23 rotate once. Is advanced toward the microchip 1 in the above-described order, and the position of the microchip 1 is determined by the first, second and third clamps 18, 22, and 26.

That is, when the shaft 14 starts to rotate, as shown in FIG. 7, the first clamp 18 starts to move toward the microchip 1, and when the shaft 14 rotates by 40 °, the third clamp 26 starts to advance toward the microchip 1, and when the shaft 14 is rotated by 60 degrees, the second clamp 22 starts to advance toward the microchip 1, so that the shaft 14 Is rotated by 160 °, the first, second and third clamps 18, 22 and 26 complete the advance toward the microchip 1 as shown in FIG. 6 to determine the position of the microchip 1 do.

When the shaft 14 is further rotated while the position of the microchip 1 is determined, the first, second and third clamps 18, 22, and 26 are retracted to their original positions, and the sensor 27 is When the initial rotational position of the shaft 14 is detected, the motor 13 stops driving, and the shaft 14 stops rotating.

When the position of the microchip 1 is determined as described above, the inside 5 of the seating block is released in a vacuum state by the fitting 6, and the microchip 1 is supplied to the circuit board and mounted.

However, in the conventional microchip positioning device, when the microchip is an ultrafine chip having a horizontal and vertical size of 0.025 mm and a thickness of 0.1 mm or less, the chip is too small and the thickness is too small, so that the chip runs away or The cracking phenomenon occurs, and in order to accurately position the chip without breaking, it is necessary to install and work with a camera, which takes a long time and increases the cost of equipment.

The present invention has been made to solve the above problems of the prior art, and an object of the present invention is to provide a microchip positioning apparatus capable of preventing the microchips from being broken by determining the positions of the microchips to be supplied in multiple stages.

Figure 1a is a block diagram of a microchip mounting means according to the prior art

Figure 1b is a plan view of the balance maintaining means according to the prior art

1c is a block diagram of a positioning means according to the prior art

1d is a plan view of a positioning means according to the prior art

Figure 1e is a flow chart of the operation of the clamp according to the rotation angle of the shaft, which is a main component of the prior art

2A is a front view of the present invention

2b is a plan view of the present invention

2C is a flowchart in which the position of the microchip is determined by the present invention.

Figure 2d is a flow chart of the movement of the clamp by the rotation of the motor of the main configuration of the present invention

<Explanation of symbols on main parts of the drawings>

50: microchip 50a: light emitting point

51 frame 52: microchip adsorption unit

53: motor 54: sensor dog

55 sensor 56 control unit

57 coupling 58 shaft

59: reference cam 60: auxiliary cam

61: bearing 52: block

63: slide bearing 64: spring

65: spring hook 66: bolt

67: reference clamp 68: auxiliary clamp

69: stop bolt 70: stop nut

71: stopper

The present invention provides a frame in which the components of the apparatus are installed and fixed, a microchip adsorption unit for supplying microchips having an incorrect position and a microchip adsorbed by a vacuum formed at a lower portion thereof, an electric motor, and a rotation of the motor. A sensor for sensing the output of the signal, a control unit for controlling the rotation of the motor by the signal output from the sensor, a shaft connected to the motor and being rotated together with the motor, and installed and rotated on the shaft Completion of positioning of the microchip by determining the position of the reference cam for determining the position of one side of the microchip supplied to the microchip adsorption unit, and the remaining surface of the microchip in which the position of one side is determined by the reference cam. A plurality of auxiliary cams, a plurality of bearings connected to the cams, and a plurality of bearings provided with the bearings, Two blocks, a reference clamp installed in the block connected to the reference cam to determine the position of one side of the microchip, and a position of the remaining surface of the microchip installed in the block and the position of one side determined by the reference clamp An auxiliary clamp to determine the positioning of the microchip to complete the positioning of the microchip, a spring connected to the block and the frame to impart an elastic force toward the cam when the block moves, a stop bolt installed and fixed to the frame, and the stop bolt And a stopper fitted to the stop nut, and a stopper installed on the block and caught by the stop nut during movement of the clamp to limit the movement of the clamp.

In addition, the present invention provides a first step of adjusting the moving distance of the mechanism corresponding to the size of the microchip, a second step of supplying the microchip, and a third position of the reference surface of the supplied microchip is determined And a fourth step in which the positions of both sides of the surface on which the position is determined in the third step are determined, and a fifth step in which the mechanisms for determining the position of the microchip are returned to their original shape.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

In the microchip positioning apparatus according to the present invention, as shown in FIG. 2, a frame 51 in which parts are installed and fixed, and a microchip 50 in which a precise position is not determined are supplied and are vacuumed. The microchip adsorption part 52 to which the microchip 50 is adsorbed, the electric motor 53 installed and fixed to the frame 51, and the lower part of the electric motor 53 are rotated. And a sensor dog 54 which is rotated at the same time, a sensor 55 which senses the rotation of the sensor dog 54 and outputs a signal thereof, and receives the signal output from the sensor 55 and the electric motor 53. Control unit 56 for controlling the rotation of the coupling, the coupling 57 is installed on the upper end of the electric motor 53, the shaft 58 is connected to the coupling 57 and rotated, the shaft 58 Connected to the shaft 58 and rotated together with the shaft 58 to determine the position of a reference surface of the microchip 50. The reference cam 59 and the shaft 58 are connected together and rotated together, and the remaining positions except for one surface whose position is determined by the reference cam 59 are determined to complete the position of the microchip 50. It consists of two auxiliary cams 60.

In addition, the bearing 61 is in contact with the cam (59, 60) linearly moving according to the shape of the cam (59, 60), the block (62) on which the bearing 61 is installed, and the block ( A block bearing 63 installed at the lower portion of the lower portion 62 and supported by the frame 51 to reduce friction during movement of the block 62, and connecting the frame 51 and the block 62 to the block 62; A spring 64 providing restoring force to the cams 59 and 60 to the block 62 when the 62 is moved by the rotation of the cams 59 and 60, and fixed to the frame 51 and fixed to the spring A spring hanger 65 on which 64 is fastened, a bolt 66 fixed to the block 62 and to which the spring 64 is connected, installed on the block 62 and moving with the block 62 A reference clamp 67 for determining a reference position of one surface of the microchip 50, and a surface installed in the block 62 and determined by the reference clamp 67. An auxiliary clamp 68 for completing positioning of the microchip 50 by positioning the remaining surface of the microchip 50, a stop bolt 69 fixed to the frame 51, and a stop bolt 69 inserted into the stop clamp 69. And a stop nut 70 for limiting the movement distance of the clamps 67 and 68, and a stopper 71 fixed to the block 62 and caught by the stop nut 70.

The operation of the microchip positioning device according to the present invention configured as described above will be described in detail with reference to FIG. 2D by relating the rotation of the motor 53 and the movement of the clamps 67 and 68.

First, the stop nut 70 is adjusted to fit the size of the microchip 50 to be positioned.

After adjusting the stop nut 70, when the power is supplied, the microchip 50 is supplied to the microchip adsorption unit 52, and the controller 56 rotates the electric motor 53 at 0 degrees. Rotate to degrees

When the electric motor 53 is rotated, the cams 59 and 60 are also rotated at the same time, and the reference clamp 67 is rotated to 70 degrees by the rotation of the cams 59 and 60. Advancing until the reference position of one side of the microchip 50 is determined.

When the motor 53 is rotated from 70 degrees to 110 degrees, the reference clamp 67 does not move forward, and the motor 53 rotates back from 110 degrees to 180 degrees.

When the rotation angle of the motor 53 reaches 180 degrees, the reference clamp 67 does not move to the reversed state of the original state, and the two auxiliary clamps 68 rotate the rotation angle 180 of the motor 53. Start forward from the island and continue until you reach 280. At this time, the position of the remaining surface of the microchip 50 is determined and positioning of the microchip 50 supplied to the microchip adsorption unit 52 is completed (A).

At this time, the two auxiliary clamps 68 are to be in contact with the microchip 50 only one of the two surfaces in contact as shown in Figure 2c, because the size of the microchip 50 is small and thin This is because if the light emitting point 50a of the microchip 50 is easy to be damaged, the product cannot function properly.

When the rotation angle of the motor 53 reaches 280 degrees, the controller 56 stops the rotation of the motor 53 and then starts to rotate the motor 53 in reverse (B).

When the rotation angle of the motor 53 is rotated at 280 degrees and reaches 180 degrees, the positioning of the microchip 50 is completed and the reference clamp 67 and the auxiliary clamp 68 are fully retracted. Leads to

At this time, the positioned fine chip 50 is taken out by the head of another device (C).

When the microchip 50 is taken out, the controller 56 rotates the electric motor 53 again until the rotation angle reaches 0 degrees.

When the rotation angle of the motor 53 reaches 0 degrees, one cycle ends, and the new microchip 50 is supplied to the microchip adsorption unit 52 to repeat the cycle.

As such, the microchip positioning device according to the present invention can be positioned so as not to be damaged without affecting the quality of the microchip 50, and the microchip 50 can be easily and accurately positioned even if the size of the microchip 50 is very small. Can be determined.

Claims (2)

A frame on which the components of the device are installed and fixed, a microchip adsorption unit for supplying microchips having an incorrect position and a microchip adsorbed by a vacuum formed in the lower part, a motor, and a rotation of the motor A sensor for outputting the signal, a control unit for controlling the rotation of the motor by the signal output from the sensor, a shaft connected to the motor and rotating together with the motor, and installed and rotated on the shaft and the microchip A plurality of reference cams for determining the position of one side of the microchip supplied to the adsorption unit, and for positioning the other side of the microchip in which the position of one side is determined by the reference cam to complete the positioning of the microchips. An auxiliary cam, a plurality of bearings connected to the cam, and a plurality of blocks in which the bearings are installed and forward and backward according to the rotation of the cam; And a reference clamp installed on the block connected to the reference cam to determine the position of one side of the microchip, and a position of the remaining surface of the microchip installed on the block and the position of one side determined by the reference clamp. An auxiliary clamp for completing the positioning of the microchip, a spring connected to the block and the frame and providing elastic force toward the cam when the block is moved, a stop bolt installed and fixed to the frame, and a stop bolt And a stop nut mounted on the block to limit the movement of the clamp when the clamp moves, and a stop nut mounted on the block to limit the movement of the clamp. . A first step of adjusting a moving distance of the instruments corresponding to the size of the microchip, a second step of supplying the microchip, a third step of determining a position of a reference surface of the supplied microchip, And a fourth step in which the positions of both sides of the surface on which the position is determined in step 3 are determined, and a fifth step in which the mechanisms for determining the position of the microchip are returned to its original shape. .