KR100296759B1 - forking and un forking picker of shoting handler for burn-in tester - Google Patents

Abstract

The present invention relates to a forking picker and an unforking picker of a burn-in tester sorting handler. The present invention relates to improving the picker structure so that the device can be lifted to load or unload a device even if an alignment defect occurs during loading and unloading of the device. In addition, the pusher's position can be corrected at the time of lowering, while the padded pusher is detachably installed from the floating block so that the pusher can be quickly replaced according to the type of device to be tested.

To this end, in the sorting handler provided with a picker which holds a device in the DC test section 39 and loads it in the test socket 35 or holds a device in the test socket and unloads it in the buffer 55, the motor 17 A lifting block 18 for elevating movement according to the driving of the elbow), an elevating piece 25 for elevating along the elevating block by driving the pusher cylinder 23 installed in the elevating block, and a bracket fixed to the elevating piece. (29), a flow block (30) installed on the bracket so as to flow left and right, positioning means for determining a position of the flow block provided on the bracket, and a pressing piece (35a) supported on the bottom of the flow block. A pusher 36 provided with a guide piece 36a, a pad 38 fixed to the lower end of the rod 37 exposed through the pusher and the flow block to the top, and Installed on the lifting platform to lift and lower the pad It is composed of a cylinder 40 to.

Description

Forking and un forking picker of shoting handler for burn-in tester}

The present invention relates to a sorting handler used when testing electrical characteristics of a manufactured device, and more particularly, to absorb a device in a DC test unit and transfer it to a test socket of a burn-in board. The present invention relates to a forking picker and an unforking picker of a burn-in tester sorting handler which absorbs and transfers a device in a test socket of a burn-in board to a buffer side.

1 is a plan view schematically 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 transfer means in the handler for the burn-in tester according to the related art.

The burn-in board loader part 2 and the unloader part 3 are provided in the upper side of the main body 1, and the DC reject part 4, the tray loader part 5, and the DC test part 6 at one side thereof are installed. 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 operates left, right, up, and down by a servo 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.

When the burn-in board is located in the burn-in board loader unit 2 as described above, the burn-in board is located on the rotating plate (not shown) installed on the upper part 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 have been taken out at the same time by the number 3 tool 14 installed on the upper side, and according to the grade, the empty pocket part 9 or the tray unloader part 10 ), And the device determined to be defective is transferred from the empty pocket portion 9 to the sorting portion 11 by the fourth tool 15.

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, in this conventional sorting handler, the device is held in the DC test section 6 to be loaded into a test socket located on the Y table 8 or the device is held from the test socket and unloaded into the empty pocket section 9. 2nd tool 13, 3rd and 4th tool 14, 15 are installed independently to be operated individually, and the pusher which is installed at the end of each tool and presses the pressing part of the socket flows from side to side There is a fixed type so that the pusher is integrated with the picker block has the following problems.

First, since tools 2 and 13 and tools 14 and 15 of the device operate separately, it takes a long time to load and unload the device into the Y table 8.

Second, if the machining tolerance and assembly error of the transfer means for transferring each tool occurs, or if the position is changed by repeated driving, the pusher does not press or press the pressing piece of the test socket when forking and unforking the device. Since the position of the device adsorbed on the pad is incorrect, it is impossible to load the device into the test socket or to unload the device from the test socket.

Third, in order to test different types of devices while loading and unloading certain types of devices, the pushers and pads need to be replaced. Since these are integrated in the picker block, the entire picker block needs to be replaced. The delay has not only reduced the utilization of expensive equipment, but also increased the production cost of equipment due to the increase in the number of parts.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem in the related art, and improves the structure of the picker so that even if alignment misalignment occurs during loading and unloading of the device, the lowering of the lifting piece for loading or unloading the device. The purpose is to allow the position of the pusher to be corrected.

Another object of the present invention is to be able to replace the pusher in accordance with the type of device to be tested by installing a pad mounted pusher detachably from the flow block.

According to an aspect of the present invention for achieving the above object, a sorting handler having a picker for holding a device in a DC test unit and loading it into a test socket or holding a device in a test socket and unloading it into a buffer. An elevating block for elevating movement in accordance with the drive, an elevating piece for elevating along the elevating block by driving a pusher cylinder installed in the elevating block, a bracket fixed to the elevating piece, and a flow provided to be movable left and right on the bracket Positioning means for determining the position of the block, the flow block installed in the bracket, a pusher provided on the bottom surface of the flow block and the guide piece is determined by the pressing piece of the socket, the pusher and the flow block A pad fixed to the lower end of the rod penetrating and exposed to the upper part, and installed on the lifting piece to lift and lower the pad Key is provided forking and unloading forking pick growing the burn-in tester sorting handler, characterized in that consisting of a cylinder.

1 is a plan view schematically 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.

Figure 6 is an exploded perspective view showing the main part of the present invention

7 is a longitudinal cross-sectional view of the coupling state of FIG.

8 is a cross-sectional view taken along the line A-A of FIG.

9 is a plan view showing the installation state of the pad

10 is a perspective view of a fork picker and an unfork picker installed on a slider;

Explanation of symbols for main parts of the drawings

16: Slider 18: Lifting block

23 pusher cylinder 25 lifting

29: bracket 30: floating block

36: pusher 38: pad

40: cylinder 42: latch

46: sensor 47: detection piece

52: Forking Picker 53: Unforking Picker

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

Figure 6 is an exploded perspective view showing the main part of the present invention, Figure 7 is a longitudinal cross-sectional view of the coupled state of Figure 6 and Figure 8 is a cross-sectional view taken along the line A-A of Figure 7, the structure of the forking picker and the unforking picker is the same structure Only the description will be given and the same reference numerals will be used.

According to the present invention, as shown in FIG. 10, the elevating block 18 is guided by the guide member 19 such as the LM guide to move up and down as the motor 17 installed in the slider 16 is driven. The ball screw 20 is fixed to the coupling 21 and the ball screw is rotatably screwed to the connecting piece 22 fixed to the lifting block 18.

Therefore, as the ball screw 20 rotates by the driving of the motor 17, the lifting block 18 is guided to the guide member 19 to move up and down.

And the pusher cylinder 23 is installed on the lifting block 18 and the mounting plate 24 fixed to the lower end of the lifting block, the lifting piece 25 is installed to be supported by the lifting pin 26, A coil spring 27 is fitted to the elevating pin so that the elevating piece 25 is positioned at a top dead center unless an external force is applied to the elevating pin, and the rod of the pusher cylinder 23 is located above the elevating pin. 23a) is located.

A guide member 28 is installed between the elevating piece 25 and the mounting plate 24 to guide the elevating movement of the elevating piece.

The bracket 29 is fixed to the elevating piece 25 which moves up and down in accordance with the driving of the pusher cylinder 23, and the bracket has a flow block 30 installed on the left and right sides of the bracket and the flow block. Positioning means for determining the position of the flow block 30 is provided.

In one embodiment of the present invention, the positioning means includes a positioning groove 29a formed in the bottom surface of the bracket 29 and an insertion hole 30a formed in the upper surface of the flow block and positioned on the positioning groove. 31) and an elastic member 32 for biasing the ball upwards.

However, contrary to the foregoing, the positioning groove may be formed in the flow block 30 and the ball 31 and the elastic member 32 may be installed in the bracket 29.

The positioning groove 29a formed at the bottom of the bracket 29 is constituted by a conical inclined surface.

A coupling hole 29b is formed in the bracket 29 so that the floating block 30 flows from side to side in a state in which the floating block 30 is supported by the bracket 29, and the upwardly protruding portion having a width smaller than that of the coupling hole is formed in the floating block 30. 30b) is formed to support the flow block 30 by fastening the screw 34 against the fixing plate 33 on the upper side of the bracket 29 in the state in which the upward protrusion is inserted into the coupling hole.

Accordingly, as shown in FIG. 7, since the air gap S is formed between the bracket 29 and the upward protrusion 30b of the flow block 30, the flow block 30 may flow left and right from the bracket 29 by the amount of the air gap. Will be.

In addition, a pusher 36 having a guide piece 36a is supported on the bottom surface of the flow block 30 so as to be determined by the pressing piece 35a of the socket, and the pusher 36 and the flow block 30 are supported. At the center of the rod), rods 37 exposed to the upper portions thereof are liftable, and pads 38 for adsorbing the device are fixed to the lower ends of the rods.

Although the rectangular pad 38 fixed to the lower end of the rod 37 may be arranged in accordance with the device, it is more preferable to eccentrically install it to one side as shown in FIG.

This is to allow the pad 38 to adsorb a device that is out of position in the tray so as to detect a mis-holding state of the device in advance when the pad 38 is loaded into the DC test unit 39.

The rod 39 on which the pad 38 is fixed is moved up and down by the driving of the cylinder 40 provided on the elevating piece 25.

On the other hand, the pusher 36 that is installed to be supported on the flow block 30 is to be removable by the locking means, which is to handle the device of a certain type, if you want to handle a device of a different type, the pusher 36 And to allow the pad 38 to be replaced quickly.

In one embodiment of the present invention, the locking means is provided between the latch 42 rotatably around the pin 41 on both sides of the flow block 30, and between the handle portion 42a of the latch and the flow block. An elastic member 43 such as a coil spring for biasing the locking piece 42b downward, and a locking groove 36b formed on both sides of the pusher 36 so that the locking piece is supported.

Accordingly, it is possible to quickly replace the pusher 36 and the pad 38 from the flow block 30 without using a separate tool.

Insertion grooves 30c are formed on the bottom of the flow block so as to couple the pusher 36 at the correct position of the flow block 30, and the alignment pin 44 fitted to the insertion groove is fixed to the top surface of the pusher 36. It is.

In addition, an accommodation space 36c is provided on an upper surface of the pusher 36 and a leaf spring 45 is embedded in the accommodation space. On the contrary, a leaf spring is provided on the bottom surface of the flow block 30 to which the pusher is connected. Although it is possible to form an accommodation space in which the 45 is inherent, it is more preferable to form the accommodation space in the pusher 36 in consideration of ease of assembly.

Further, in the present invention, a detection means for detecting a holding state of the device adsorbed to the pad 38 is further provided. The detection means includes a sensor 46 fixed to the bracket 29 and a tip of the rod 37. A detection piece 47 fixed to the sensor and positioned directly below the sensor, a housing 49 fitted to the rod and fixed by a bolt 48 to the flow block 30 as shown in FIG. 7, and elastically installed in the housing. It consists of the spring 50 which biases a rod downward, and the E-ring 51 which is fixed to the outer peripheral surface of the said rod, and controls the excessive fall of a rod.

According to the present invention configured as described above, as shown in FIG. 10, the forking and unforking pickers 52 and 53 having the same structure are provided in the slider 16 which moves horizontally along the X-axis main axis 54. A lifting block 18 is provided on the slider so that the lifting block 18 can be lifted and the lifting block 18 is provided with a plurality of forking pickers 52 and an unforking picker 53 inline (four in one embodiment of the present invention). It is.

This means that when the forking picker 52 takes four devices out of the DC test section 39 at the same time, the unforking picker 53 pulls out the four devices that have been tested from the test socket 35 of the burn-in board, or vice versa. When the device adsorbed to the fork picker 52 is inserted into the test socket 35 of the burn-in board, the four devices adsorbed to the unfork picker 53 can be placed in the buffer 55.

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.

For reference, the operation of the sorting handler for the burn-in tester to which the present invention is applied is as follows.

First, in the loading unit 56, the tray 57 filled with the device to be tested is placed, and in the unloading unit 58, one empty tray 57a in which the tested good quality device is placed is placed. After the (59) is moved along the X-axis main axis (54) to hold a plurality of devices from the tray, the loading picker (59) is transferred to the DC test section (39) to load the held device into the test socket, so the burn-in The DC test of the device to be loaded on the board is done for a set time.

After the DC test of the device is performed in the DC test unit 39, the forking and unforking pickers 52 and 53 installed on the slider 16 are simultaneously moved along the X axis main axis 54 to the right in the drawing. The picker 52 holds the device to be loaded into the test socket 35 of the burn-in board from the test socket of the DC test unit 39, and the unforking picker 53 simultaneously holds the device on the burn-in board that has been burn-in tested.

Hereinafter, only one picker will adsorb the device when the pads 38 of the fork picker 52 and the unfork picker 53 are lowered to adsorb the device in the test socket, respectively.

In the state where each picker is located directly above the test socket, the driving of the cylinder 40 is turned off, so that the pad 38 is located at the bottom dead center.

In this state, when the ball screw 20 is idling by the drive of the motor 17 installed in the slider 16, the connecting piece 22 is screwed to the ball screw, so that the elevating block 18 is guided to the guide member 19. It is guided by and descends to the bottom dead center.

After that, when the rod 23a pushes the lifting pin 26 by the driving of the pusher cylinder 23 installed on the lifting block 18, the lifting pin 26 elastically installed by the coil spring 27 is lowered, so that the lifting pin 26 is lowered. The elevating piece 25 connected to the pin 26 is lowered to the bottom dead center in a state of being guided by the guide member 28.

When the elevating piece 25 descends to the bottom dead center in this manner, the pusher 36 having the guide piece 36a is installed on the bottom of the bracket 29 fixed to the elevating piece, so that the position of the pusher is the guide piece 36a. At the same time as the pressing piece 35a is re-determined by the pressing piece 35a of the test socket 35 and the pressing piece comes into contact with the bottom surface of the pusher 36, the contact pin (not shown) is opened to both sides.

At this time, the device in the test socket is connected to the bottom of the pad 38.

When the picker conveyed by the slider 16 does not coincide with the test socket due to the slider's feed tolerance during the above operation, and is eccentric to one side, it is provided between the bracket 29 and the floating block 30. The position of the pusher 36 is re-determined by the positioning means so as to coincide with the test socket 35.

That is, as shown in FIG. 7, when the position of the pusher 36 is eccentric to one side when the pusher 36 is lowered by the driving of the pusher cylinder 23 while the picker is shifted from the test socket 35. As the inclined surface of the guide piece 36a is connected to the pressing piece 35a of the test socket 35, the position of the pusher 36 is re-determined. In this case, the amount by which the position of the pusher 36 is variable is determined by the pusher 36. As much as the space S between the upwardly projecting portion 30b of the fixed flow block 30 and the coupling hole 29b formed in the bracket 29.

Thereafter, when the vacuum pressure is applied to the pad 38, the device in the test socket is attracted to the pad 38. In this state, the cylinder 40 is driven to pull the rod 40a upward, thereby fixing the pad 38. The detection piece 47 is fixed to the upper end of the loaded rod 37, and the detection piece is fitted to the rod 40a of the cylinder 40, so that the rod 37 that has absorbed the device is a spring in the housing 49. While pressing (50), it rises to top dead center.

If the position of the pusher 36 is re-determined within the range of the air gap S during the operation as described above, when the lifting piece 25 rises due to the re-drive of the pusher cylinder 23, the ball 31 is moved to the flow block 30. The ball elastically installed by the elastic member 32 and shifted from the positioning groove 29a is inserted into the positioning groove 29a formed on the bottom surface of the bracket 29 by the elastic force of the elastic member 32. As a result, the pusher 36 is reduced to an initial state.

After the pad 38 rises to the top dead center with the device in the test socket adsorbed to the pad 38, the device in the test socket of the DC test unit 39 is adsorbed to the forking picker 52, The device in the test socket 35 of the burn-in board is in a state of being adsorbed by the unforking picker 53.

However, when a DC failure occurs in any one of the DC-tested devices as a result of the DC test, only the unfortuning picker 53 is driven to take out only the burn-in tested device from the test socket 35 of the burn-in board, and the forking picker 52 The slider 16 is held slightly further to the right in the drawing to hold the DC-tested good device placed on the loading side buffer 60.

In the above operation, when the DC test unit 39, 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 61 to take out the device in the DC test unit 39. When the sorting picker 62 moves to the sorting position side along the X-Y axis 63 and then simultaneously holds a plurality of devices from the test socket of the DC test section 39, the device determined as good as a result of the DC test is the loading side. Devices which are unloaded into the buffer 60 and which are defective in DC are sorted into the empty tray 57b of the sorting unit 64 according to the grade.

After the devices are suspended in the forking picker 52 and the unforking picker 53, the slider 16 moves along the X axis 54 to the left side of FIG. 4 to burn-in the device suspended to the forking picker 52. The device located directly above the test socket of the board and suspended from the unfortuned picker 53 is located directly above the buffer 55.

As described above, when the cylinder 40 is turned off during the transfer of the slider 16, the rod 37, which has been raised to the top dead center while compressing the spring 50, is reduced to the initial position by the restoring force of the spring 50. The device adsorbed in 38 is located at the bottom dead center.

This is to minimize the cycle time by positioning the device to bottom dead center between processes.

Thereafter, when the elevating block 18 and the elevating piece 25 which are located at the top dead center in the above-described operation are sequentially positioned at the bottom dead center by the driving of the motor 17 and the pusher cylinder 23, the flow block 30 At the same time, the pusher 36 installed in the) is repositioned by the pressing piece 35a of the test socket 35 and the contact pins are opened to both sides.

In the process of loading the device to be tested into the test socket of the burn-in board as described above, if there is a device which is not unloaded in the test socket, the device adsorbed on the pad 38 is pressed against the device in the test socket and the pad 38 The rod 37 is raised while compressing the spring 50 before the device adsorbed at the bottom dead center, the detection piece 47 fixed on the upper side of the rod is raised, and thus the sensor 46 Since the detection piece 47 is detected, an error is generated and the operator is quickly notified and the driving of the equipment is stopped.

Further, even when the device adsorbed on the pad 38 is loaded inclined to one side in the test socket, the rod 37 compresses the spring 50 before the device adsorbed on the pad 38 is located at the bottom dead center. As it rises, as described above, the miss loading of the device is detected and an error is generated.

However, if the device adsorbed on the pad 38 is located directly above the test socket and loaded into the test socket, the vacuum pressure applied to the pad 38 is released, and the lifting piece 25 and the lifting block 18 are sequentially top dead center. Ascending to and moving the slider 16 to the right side of Figure 4 it is possible to continue loading and unloading the device.

After loading the device suspended from the forking picker 52 in the test socket 35 of the burn-in board by the operation as described above, and placing the burned-in tested device hanging from the unforking picker 53 on the buffer 55, The device is unloaded into the empty tray of the unloading section 58 by the unloading picker 65.

When there is a device determined as a bad result of burn-in test among the devices placed in the buffer 55 during the above operation, when the unloading picker 65 holds only the device determined as good quality and moves to the unloading unit 58, Since the driving means (not shown) changes the buffer 55, which coincides with the unloading position, into the sorting position, the sorting picker 62 moves along the X-Y axis 63, so that the buffer located at the sorting position. The defective device is held from 55 and then sorted into classes in the empty tray 57b located in the sorting unit 64.

Meanwhile, in order to handle a device of different type while loading and unloading a certain type of device, the pusher 36 and the pad 38 need to be replaced from the floating block 30. Hereinafter, the pusher 36 needs to be replaced. It will be briefly described.

Since the pusher 36 is supported by the latch 42 rotatably installed around the pin 41 on the flow block 30, the operator pushes the handle portion 42a of the latch 42. The pusher 36 supported by the block 30 can be separated.

That is, when the handle 42a of the latch 42 is pressed, the latch 42 is rotated about the pin 41, so that the latch 42 is elastically installed as the elastic member 43, and the locking groove 36b of the pusher 36 is pushed. The locking piece 42b, which is caught on the side, is pulled out of the locking groove. Since the leaf spring 45 is installed in a compressed state on the connection surface of the floating block 30 and the pusher 36, the floating block 30 The pusher 36 is easily separated from it.

After the pusher 36 used in the above operation is separated from the flow block 30, a new pusher must be coupled to the flow block 30. At this time, the handle 42a of the latch 42 is pressed simultaneously. The pusher is in close contact with the bottom of the flow block 30 in a state.

When the pusher 36 is in close contact with the bottom of the flow block 30, the dowel pin 44 fixed to the top of the pusher 36 is inserted into the insertion groove 30c formed at the bottom of the flow block 30, The location is exactly the same.

When the external force is removed from the latch 42 held in such a state, the latch 42 rotates about the pin 41 by the restoring force of the elastic member 43 so that the locking piece 42b is formed on the pusher 36. Since it is caught in the groove (36b) it is possible to quickly replace the pusher 36, thereby enabling a quick restart of the equipment.

As described above, the present invention has the following advantages over the conventional apparatus.

First, since the device is loaded or unloaded into the test socket of the burn-in board by the forking picker 52 and the unforking picker 53 at the same time, the time for loading and unloading can be reduced to 1/2.

Second, even when processing tolerances and assembly errors of the conveying means for conveying the slider 16 are generated or the position is changed by repeated driving, the flow block 30 installed in the bracket 29 is fixed by a certain amount when the device is forked and unforked. Since the position of the pusher 36 is re-determined to match the test socket by moving from side to side, it is possible to accurately load the device into the test socket or to unload the device from the test socket.

Third, while loading and unloading a certain type of device, even when testing different types of devices, the pusher 36 can be replaced by a one-touch method without using a separate tool from the floating block 30, thereby quickly working. In this way, the utilization rate of expensive equipment is maximized and the production cost of equipment is reduced due to the minimization of the number of parts.

Claims (13)

A sorting handler comprising a picker for holding a device in a DC test unit and loading it in a test socket or holding a device in a test socket and unloading the device in a buffer, the lifting block for lifting and lowering according to the driving of a motor, and the lifting block A lifting piece which moves up and down along the lifting block by driving a pusher cylinder installed in the lifter, a bracket fixed to the lifting piece, a flow block installed on the bracket so as to flow left and right, and a position of the flow block installed on the bracket; A positioning means, a pusher provided on a bottom surface of the flow block and provided with a guide piece to determine a position by a pressing piece of the socket, and fixed to a lower end of the rod exposed through the pusher and the flow block to the top. Burn-in test, characterized in that composed of a pad and a cylinder which is provided on the lifting piece to raise and lower the pad Forking and unforking pickers in sorting handlers. The method of claim 1, The positioning means comprises a positioning groove formed on the bottom surface of the bracket, a ball inserted in the insertion hole formed on the upper surface of the flow block and positioned on the positioning groove, and an elastic member for biasing the ball upwards. Forking and unforking pickers in tester sorting handlers. The method of claim 2, Positioning groove formed on the bottom of the bracket is a fork and un-forking picker of the burn-in tester sorting handler, characterized in that consisting of a conical inclined surface. The method of claim 1, A coupling hole is formed in the bracket, and the floating block has an upward protrusion having a smaller width than the coupling hole, and the fork of the burn-in tester sorting handler is supported by a fixing plate on the upper side of the bracket while the upward protrusion is fitted into the coupling hole. Unforking picker. The method of claim 1, And a pusher supported on the flow block detachably coupled by a locking means. The method of claim 5, The locking means includes a latch installed on both sides of the flow block so as to rotate about a pin, an elastic member installed between the handle portion and the flow block of the latch to bias the locking piece downward, and the pusher to be supported by the locking piece. Forking and unforking picker of the burn-in tester sorting handler, characterized in that consisting of a locking groove formed on both sides. The method of claim 6, An insertion groove is formed in the bottom surface of the flow block, and the top surface of the pusher is a fork and un-forking picker of the burn-in tester sorting handler, characterized in that the alignment pin is fixed to the insertion hole. The method of claim 5, A forking and unforking picker of a burn-in tester sorting handler, characterized in that an accommodation space is provided on one side of the connection surface of the flow block and the pusher, and a leaf spring is embedded in the accommodation space. The method of claim 1, A forking and un-forking picker of the burn-in tester sorting handler, further comprising detecting means for detecting a holding state of the device adsorbed to the pad. The method of claim 9, The detecting means includes a sensor fixed to the bracket, a detection piece fixed to the tip of the rod and positioned directly below the sensor, a housing fitted to the rod and fixed to the flow block with a bolt, and elastically installed in the housing to provide a rod. A fork and unfork picker of a burn-in tester sorting handler, comprising: a spring biased downward; and an E-ring fixed to an outer circumferential surface of the rod to control excessive drop of the rod. The method of claim 1, A fork and unfork picker of a burn-in tester sorting handler, characterized in that the pad is rectangular and eccentrically installed on one side. The method of claim 1, The forking and unforking picker of the burn-in tester sorting handler, wherein the forking and unforking pickers having the same structure are installed on a slider which moves horizontally along the X axis main axis, and a lifting block is liftable on the slider. The method of claim 1 or 12, A forking and unforking picker of a burn-in tester sorting handler, characterized in that a plurality of forking pickers and unforking pickers are installed inline in a lifting block.