KR100295775B1 - device for lading tray of sorying part in handler for durn-in test - Google Patents

Abstract

The present invention relates to a tray stacking device for a sorting unit for a burn-in tester sorting handler, and to maximize the operation rate of the equipment by stacking a tray containing a device determined to be defective according to a test result.

To this end, a sorting unit 16 in which a plurality of trays 21 are positioned so that devices determined as defective by a burn-in test or a DC test result are classified, and moved along an X-Y axis 47 above the sorting unit. In the sorting handler for the burn-in tester provided with the sorting picker 31 which is installed so that the bad device may be transferred to the tray side of the sorting unit, the base 17 installed on the sorting unit and the tray may be mounted on the base so as to be liftable. The guide plate 23 which determines the position of the seating plate 22, the tray 21 fixed to the base located on the outer circumferential surface of the seating plate and placed on the seating plate, and the lifting block fixed to one side of the seating plate 19, a guide member 20 installed between the vertical member 18 fixed to the base and the lifting block for guiding the lifting motion of the seating plate, elevator means for lifting the seating plate, and Complex by detecting the plate-shaped tray is composed of detection means for controlling the drive of the elevator means.

Description

Device for lading tray of sorying part in handler for durn-in test}

The present invention relates to a burn-in tester sorting handler used when testing electrical characteristics of a finished device. More specifically, the present invention relates to a burn-in tester sorting handler. The present invention relates to a tray stacking device for a sorting unit for a burn-in tester sorting handler that allows sorting of a defective device continuously to the sorting unit without replacing the tray from the sorting unit even if the sorted device is filled in the tray of the sorting unit.

1 is a plan view showing the configuration of a sorting handler for a burn-in tester according to the related art, and FIG. 2 is a schematic view for explaining the operation of the conveying means in the sorting handler for the burn-in tester according to the related art.

The burn-in board loader part 2 and the unloader part 3 are installed on one side of the upper part of the main body 1, and the DC reject part 4, the tray loader part 5, and the DC test part 6 are provided on one side thereof. Y table 8 is provided with a turn return device portion 7 that rotates 90 ° on one side of the bottom surface, and an empty pocket portion 9 and a tray unloader portion 10 and sorting on one side thereof. The unit 11 is provided in order.

In addition, the upper part of the DC reject part 4, the tray loader part 5, and the DC test part 6 is provided with the first tool 12 which is operated left, right, up, and down by a sub-motor. On the upper side of the Y table 8 in which the 6 and the turn return device portion 7 are provided, the second tool 13 that is operated between the gaps is provided.

In addition, a third tool 14 that is operated between the gaps is provided at the upper portion of the Y table 8, the empty pocket portion 9, and the tray unloader portion 10, and the empty pocket portion 9 and the sorting portion ( On the upper side of 11), the fourth tool 15 which is operated between the gaps is provided.

Therefore, the tray filled with the device to be burned-in is placed in the tray loader part 5, and then the burn-in board with the burned-in tested device is inserted into the test socket in the burn-in board loader part 2.

In addition, after the burn-in test or the DC test, the tray unloader unit 10 and the sorting unit 11 respectively place an empty tray for containing devices classified by grades.

In this state, if the burn-in board is located in the burn-in board loader unit 2, the burn-in board is located on the rotating plate (not shown) installed at the top of the Y table 8, and is coupled to the connector of the handler. It is conveyed to the Y table 8, and rotated 90 degrees by the turn return device part 7.

As described above, when the rotating plate rotates by 90 °, the ball screw is rotated by the sub-motor, so that the Y table 8 moves to the process line where the tools 12, 13, 14 operate. .

Therefore, the four devices plugged into the test socket of the burn-in board after the burn-in test are taken out at the same time by the tool No. 3 installed on the upper side, and the empty pocket part 9 or the tray unloader part 10 according to the grade. ), And the device determined to be defective is classified by grade by tool No. 4 (15) and transferred from the empty pocket portion 9 to the sorting portion 11.

On the other hand, when the burn-in tested device inserted into the test socket of the burn-in board exits as described above, the first tool 12 operates four devices in the tray of the loader unit and transfers them to the DC test unit 6. The DC test is performed, and the device which was previously in the DC test unit is inserted into the test socket on the burn-in board by the tool 2 (13).

That is, the device that is plugged into the test socket of the burn-in board is the burn-in test is completed, and is transported and classified by the tool 3 and the tool 15 by the grade, the tool 3 and the tool 4 (15) When the device is pulled out of the test socket by 1), tools 1 and 2 (13) are operated in the empty space to insert another device to be tested again.

However, this conventional sorting handler is configured to stop the operation of the equipment when the device is filled in the tray located in the sorting unit 11 in a continuous operation and to notify the operator by buzzer sound, so that the operator from the sorting unit Since it is possible to continue to work only if the replacement is given, there was a problem that the operation rate of expensive equipment is reduced due to the suspension of equipment due to the replacement of the tray.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem in the related art, and a worker can be stacked from the sorting unit even if a defective device is filled in the tray on the sorting unit by stacking a tray containing a device determined to be defective according to a test result. The goal is to maximize the utilization of the machine by continuously sorting out bad devices without replacing the trays.

According to an aspect of the present invention for achieving the above object, a sorting unit in which a plurality of trays are positioned so that devices determined as defective by burn-in test or DC test are included in each grade, and move along the X-Y axis above the sorting unit. A sorting handler for a burn-in tester provided with a sorting picker which is installed so as to transfer a defective device to the tray side of the sorting unit, the base having a sorting unit, a seating plate installed on the base to be liftable, and a tray mounted thereon; A guider fixed to a base located on an outer circumferential surface of a seating plate to determine a position of a tray on which the seating plate is mounted, a lifting block fixed to one side of the seating plate, and a vertical member and a lifting block fixed to the base Guide members for guiding the lifting movement of the seat plate, and elevator means for lifting the seat plate And, there is provided a tray stacking device of the sorting unit for the burn-in tester sorting handler, characterized in that the sensing means for detecting the tray on the seating plate to control the driving of the elevator means.

1 is a plan view showing the configuration of a sorting handler for a conventional burn-in tester

Figure 2 is a schematic diagram for explaining the operation of the transfer means in the sorting handler for a burn-in tester according to the prior art

Figure 3 is a perspective view showing a partially omitted sorting handler for the burn-in tester to which the present invention is applied

Figure 4 is a front view showing the sorting handler for the burn-in tester to which the present invention is applied

5 is a plan view of FIG.

6 is a perspective view showing the main part of the present invention;

7 is a partial longitudinal sectional view for explaining the connection state of the cam plate and the lifting block;

8A and 8B are front views showing the cam plate and the sensing plate

9 is a graph illustrating a trajectory of a cam follower whose position is changed according to the driving of the cam plate.

10A and 10B are side views of FIG. 6 for explaining the operation of the present invention.

10A is a state in which the seating plate is located at the top dead center

10B is a state in which the seating plate is lowered by one step;

Explanation of symbols for main parts of the drawings

17: Base 19: lifting block

22: seating plate 23: guider

25 motor 26 cam plate

27: Cam Followers 29: Phase Sensor

30: lower sensor 32: sensing plate

33: sensor

Hereinafter, the present invention will be described in more detail with reference to FIGS. 3 to 10.

Figure 6 is a perspective view showing the main portion of the present invention, Figure 7 is a partial longitudinal cross-sectional view for explaining the connection state of the cam plate and the lifting block and Figures 8a and 8b is a front view showing the cam plate and the sensing plate, the present invention is a sorting unit ( Vertical members 18 are provided at one side of the plurality of bases 17 located on the base 16, and the lifting blocks 19 are guided by guide members 20 such as LM guides. It is installed so as to elevate and the seating plate 22 on which the tray 21 is mounted is fixed to the elevating block.

Four guiders 23 for determining the position of the tray 21 on which the mounting plate is mounted are fixed to the base 17 located on the outer circumferential surface of the mounting plate 22.

The seating plate 22 fixed to the lifting block 19 is configured to move up and down within a range set by the elevator means, which in one embodiment of the present invention has the bracket 24 on the base 17. A motor 25 fixed and supported, a cam plate 26 fixed to the motor shaft and rotating according to the driving of the motor, and a cam follower provided on the lifting block 19 and connected to the outer circumferential surface of the cam plate ( 27).

Therefore, when the cam plate 26 rotates by the set angle, the cam follower 27 is connected to the outer circumferential surface of the cam plate 26 so that the seat plate 22 fixed to the lifting block 19 is raised or lowered within a predetermined range. do.

The cam follower 27 is closely connected to the outer circumferential surface of the cam plate 26 so that the tension spring 28 is connected between the base 17 and the lifting block 19 so that the position of the seating plate 22 can be maintained accurately.

The reason why the motor 25 is used as a drive source of the elevator means in one embodiment of the present invention is that the control of lowering the elevating block 19 by exactly one height of the tray is easier than the cylinder.

The elevator means having the structure as described above is configured to control the driving by the sensing means for detecting the empty tray 21 mounted on the seating plate 22.

The sensing means is composed of a pair of upper sensor 29 and lower sensor 30 which are installed to face the guider 23 and detect the empty tray 21 on the seating plate 22.

At this time, the detection positions of the upper sensor 29 and the lower sensor 30 are as high as one height of the tray 21.

In the present invention, when the tray 21 is placed on the seating plate 22, the tray position at the top is always kept constant so that the device sorted by the sorting picker 31 is accurately contained in the tray 21. It is further provided with a zero setting means for setting the.

The zero point setting means is fixed to the motor shaft and rotated together with the cam plate 26 and the sensing plate 32, and installed to be located above the sensing plate to detect the position of the sensing plate to control the drive of the motor 25 It is composed of a sensor 33, the sensor 33 is fixed to the bracket 34 fixed to the vertical member (18).

FIG. 8A illustrates the shape of the cam plate, and FIG. 9 is a graph showing the trajectory of the cam follower whose position is changed according to the driving of the cam plate, even when the cam plate 26 is rotated at the top dead center and the bottom dead center of the seating plate 22. The rest period (about 15 degrees) which the height of the board | plate 22 does not change is set.

This is to prevent the seat plate 22 from being separated from the top dead center or the bottom dead center by the rest period even when the driving error of the motor 25 is generated and rotates more than the position of the top dead center or the bottom dead center.

8B illustrates a shape of the sensing plate in detail, and has a fan shape in which one side portion is removed from the original plate.

Therefore, as the motor shaft rotates in the counterclockwise direction by the driving of the motor 25, if one side of the cutting surface 32a of the sensing plate 32 passes through the sensor 33 and the sensor does not detect the sensing plate, the mounting plate ( It is determined that 22) is located at the top dead center, and on the contrary, when the other side cut surface 32b of the sensing plate 32 passes through the sensor 33 by the clockwise rotation of the motor shaft, the sensor fails to detect the sensing plate. It is determined that the plate 22 is located at the bottom dead center.

Figure 3 is a perspective view showing a part of the sorting handler for the burn-in tester to which the present invention is applied, Figure 4 is a front view showing a sorting handler for the burn-in tester to which the present invention is applied, Figure 5 is a plan view of FIG.

First, the tray 21a filled with the device to be tested is placed in the loading unit 35, and the unloading unit 36 is positioned from one empty tray 21b in which the device of the tested good is placed. Shall be.

When the equipment is operated in this state, the motor 25, which is an elevator means, is driven to determine whether the empty tray 21 is placed on each seating plate 22 of the sorting unit 16.

When the motor 25 is driven forward, the cam plate 26 fixed to the motor shaft and the sensing plate 32 simultaneously rotate clockwise, and the cam follower 27 fixed to the lifting block 19 is the outer circumferential surface of the cam plate 26. The seating plate 22 fixed to the lifting block reaches a top dead center as shown in FIG. 10A. At this time, one side cut surface 32a of the sensing plate 32 passes through the sensor 33. It is determined that the seating plate 22 has reached the top dead center, and the driving of the motor 25 is stopped.

In the above operation, the tension spring 28 provided between the base 17 and the lifting block 19 maintains the tensioned state as much as possible.

When the mounting plate 22 is positioned at the top dead center by the above-described operation, the upper sensor 29 installed to face the guide 23 detects whether or not the empty tray 21 is present on the mounting plate 22. Done.

If the empty tray 21 is detected by the upper sensor 29, the motor 25 stopped driving until the sensor 33 detects the other side 32b of the sensing plate 32. The cam plate 26 is rotated so that the seat plate 22 is lowered to the bottom dead center, and then the motor 25 is driven forward to raise the seat plate 22 back to the top dead center in the above-described operation.

This is to accurately position the empty tray 21 on the seating plate 22 to the point where the bad device is sorted by the sorting picker 31 at all times.

However, if the upper sensor 29 does not detect the empty tray 21 even though the cam plate 26 rotates and raises the seating plate 22 to the top dead center, the empty tray stacking stack is stopped while the motor 25 is stopped. One empty tray 21 stacked in the beaker 37 is held by a separate holding means and placed on a seating plate 22 located at a top dead center, and a bin placed on an upper surface of the seating plate 22. The tray 21 is guided to the four guiders 23 and is positioned so that the tray 21 is placed at the correct point of the seating plate 22.

After the holding means carries the empty tray in the empty tray stacking stacker 37 onto the seating plate 22, the empty tray stacked in the empty tray stacking stacker 37 is one step (by one thickness of the tray). Is raised.

When the upper sensor 29 installed in the guider 23 detects that one empty tray 21 is placed on the seating plate 22 by the above operation, the seating plate 22 is driven by the reverse driving of the motor 25 as described above. ) Is lowered to the bottom dead center, and then driven forward to the top dead center.

After the empty tray 21 is placed on each seating plate 22 as described above, the equipment starts normal operation.

That is, after the loading picker 38 is moved along the X-axis main axis 39 to hold the plurality of devices from the tray 21a, the loading picker 38 moves to the DC test unit 40 to hold the device. Since it is loaded into the test socket, the DC test of the device to be loaded on the burn-in board is performed for a set time.

After the DC test of the device is performed in the DC test unit 40, the forking and unforking pickers 41 and 42 simultaneously move along the X axis main axis 39 to the right in the drawing, and the forking picker 41 burns in. The device to be loaded into the test socket 43 of the board is held from the DC test unit 40, and the unforking picker 42 holds the device on the burn-in board after the burn-in test is completed.

However, if any one of the DC-tested devices has a DC failure, only the un-forking picker 42 is driven while the forking and un-forking pickers 41 and 42 are moved along the X-axis main axis 39. Only the burned-in tested device is removed from the test socket 43 of the burn-in board, and the forking picker 41 of the DC-tested good product placed on the loading-side buffer 45 with the slider 44 slightly moved to the right in the drawing. Holding a plurality of devices.

In the above operation, when the DC test unit 40, which has been matched with the loading and unloading positions, is changed to match the sorting position by driving the DC test unit variable means 46 to take out the device in the DC test unit 40. When the sorting picker 31 moves to the sorting position side along the X-Y axis 47 and then simultaneously holds a plurality of devices from the test socket of the DC test unit 40, the device determined as good as a result of the DC test is the loading side. Devices which are unloaded into the buffer 45 and which are defective in DC are sorted into the empty tray 21 of the sorting unit 16 according to the grade.

On the other hand, when the device to be burned-in test is held in the forking picker 41, and the burner-tested device is held in the unforking picker 42, the forking picker 41 is burned-in when the slider 44 is moved to the left in the drawing. It is located directly above the empty test socket of the board, and the unforking picker 42 is located directly above the buffer 48.

Accordingly, the device held by the forking picker 41 is loaded into the test socket 43 of the burn-in board, and the device held by the unforking picker 42 is placed in the buffer 48.

After the burn-in tested device is placed on the upper surface of the buffer 48, the device is unloaded into the empty tray of the unloading unit 36 by the unloading picker 49.

When there is a device determined as a bad result of burn-in test among the devices placed in the buffer 48 during the above operation, when the unloading picker 49 holds only the device determined as good quality and moves to the unloading part 36 side, Since the driving means (not shown) causes the buffer 48, which coincides with the unloading position, to be changed to the sorting position, the sorting picker 31 moves along the X-Y axis 47 so that the buffer located at the sorting position. The defective device is held from 48 and then sorted by grade in the empty tray 21 located in the sorting unit 16.

In the continuous operation as described above, when the empty tray 21 located in the sorting unit 16 is filled with a defective device in the CPU, the motor 25 as a driving source of the elevator means of the present invention is reversed. 10b to lower the seating plate 22 as shown in FIG. 10b. The height at which the seating plate 22 descends is off because the upper sensor 29 installed in the guider 23 does not detect the tray. Then, the lower sensor 30 is to the point where the tray is detected (on).

As described above, when the mounting plate 22 is lowered by one step, the tension spring 28 that has been tensioned as much as possible is compressed, so that the cam follower 27 is closely connected to the outer circumferential surface of the cam plate 26. Thereby, the falling amount of the seating plate 22 is correctly maintained.

As described above, after the lower sensor 30 detects the tray mounted on the seating plate 22 by one step of lowering the seating plate 22, the holding means is one empty tray from the empty tray stacking stacker 37. Hold 21 to position on the upper surface of the seating plate 22 to return to the initial position.

According to the above operation, when two trays are placed on the seating plate 22 and the upper sensor 29 installed in the guider 23 detects the upper empty tray 21, it is seated by reverse driving of the motor 25 as described above. The plate 22 is lowered to the bottom dead center, and then the motor 25 is driven and driven to raise the seat plate 22 until the upper sensor 29 detects the empty tray 21 positioned at the uppermost side.

As a result, the sorting operation of the defective device becomes possible.

When the number of trays (four in the embodiment of the present invention) set on the seating plate 22 is repetitive, and the tray recognizes that the tray is filled with defective devices, the motor 25 is reversed. Drive to rotate the motor shaft.

However, the seating plate 22 is already located at the bottom dead center so that even if the cam plate 26 rotates within the resting section 15 °, the seating plate 22 does not lower anymore.

That is, although the sensor 33 detects the cut surface 32b of the sensing plate 32 by the rotation of the motor shaft, and the seating plate 22 is located at the bottom dead center, the upper sensor 29 installed in the guider 23. If the) is not turned off, the central processing unit recognizes that the set number of trays are placed on the seating plate 22, and a notification means such as a buzzer sounds to inform the worker of the tray replacement time on the seating plate 22. The equipment becomes operational.

As described above, the present invention is configured to stack a plurality of trays 21 by one step, which are located in the sorting unit 16 and contain a defective device, so that even if the device is filled in the tray located in the sorting unit. It is possible to delay the replacement time of the tray, thereby maximizing the utilization rate of expensive equipment because the operator can continuously operate the equipment without changing the tray in the sorting unit.

Claims (6)

A sorting unit in which a plurality of trays are positioned so that devices determined as defective as a result of a burn-in test or a DC test are included in each grade, and installed on the upper side of the sorting unit so as to be movable along the X-Y axis to transfer the defective device to the tray side of the sorting unit. A sorting handler for a burn-in tester provided with a sorting picker, comprising: a base installed on a sorting part, a seating plate mounted on the base so as to be liftable, and a tray mounted thereon, and fixed to a base located on an outer circumferential surface of the seating plate. A guide member for determining a position of the tray to be mounted on the guide plate, a lifting block fixed to one side of the seating plate, a vertical member fixed to the base, and a lifting block to guide the lifting movement of the seating plate; Elevator means for elevating the seat plate and the tray on the seat plate to detect the elevator water. The tray stacking device of the sorting unit for a burn-in tester sorting handler, characterized in that the sensing means for controlling the driving of the stage. The method of claim 1, The elevator means And a cam plate fixed to the motor shaft, a cam plate fixed to the motor shaft, and a cam follower provided on the elevating block and connected to an outer circumferential surface of the cam plate. The method of claim 2, A tray stacking device for a sorting unit for a burn-in tester sorting handler, characterized in that a tension spring is connected between the base and the lifting block. The method according to claim 1 or 2, The sensing means The tray stacking device of the sorting unit for the burn-in tester sorting handler, which is installed to face the guider and comprises an upper sensor and a lower sensor detecting a tray on a seating plate. The method of claim 4, wherein A tray stacking device for a sorting unit for a burn-in tester sorting handler, further comprising a zero setting means for setting a tray position of the uppermost side mounted on a seating plate. The method of claim 5, The zero setting means Burn-in tester sorting handler sorting comprising a sensing plate fixed to the motor shaft and rotating along with the cam plate, and installed on the upper side of the sensing plate to detect the position of the sensing plate and control the driving of the motor. Negative tray stacker.