KR100404740B1 - Device loading and unloading apparatus in the test site of handler - Google Patents

Abstract

The present invention relates to an apparatus for loading and unloading a device at a test site of a horizontal handler. The present invention relates to a device for transferring a device at a test site for testing and transferring a device tested at a test site to an unloading buffer. It can be done at the same time.

To this end, the shaft 5 which is installed on the upper plate 3 positioned directly above the test position T and rotates according to the driving of the driving motor 4 and the amount of rotation of the shaft are detected to drive the driving motor. Axial rotation control means for controlling, guide rails 14a and 14b which are symmetrically fixed on the rotating body 13 fixed to the lower end of the shaft and rotate together with the shaft, and are coupled to each of the guide rails to move up and down. Lifting blocks 15a and 15b, at least one or more pickers 17a and 17b mounted on the lifting block to adsorb the device, and fixed to the upper plate so as to be located outside the guide rail and each lifting block on the outer circumferential surface thereof. A cylindrical cam plate 21 having a cam groove 21a into which one end is fitted, and a movable cam plate 24a and 24b formed separately from the cam plate in accordance with the test position T and the device loading / unloading position L. FIG. And one end is fixed to each of the movable cam plates so that the picker It is configured to bit position, and the lifting means and the picker, the picker control means for detecting to control the drive of the lifting means for the picker in the picker top dead center and the bottom dead center to lift the picker when the device is located in the loading / unloading position.

Description

Device loading and unloading apparatus in the test site of handler

The present invention is a device at a test site of a horizontal handler adapted to be transported for testing a device at a test site and to simultaneously perform an operation for transferring a tested device to an unloading buffer side at a test site. It relates to a loading and unloading device.

In general, a device loading and unloading apparatus of a horizontal handler known to date is briefly described as follows.

The loading picker is installed on the X-Y axis installed on the upper side of the main body, and the position of the device is determined after the loading picker absorbs a plurality of devices from the customer tray placed on the loading position and seats them in the loading buffer.

The loading picker repeatedly reciprocates between the loading position and the loading buffer and re-determines before testing the position of the device contained in the customer tray.

The device positioned in this way is absorbed by the test picker moving along the XY axis, transferred to the upper part of the test site, and then vertically lowered. Therefore, the lead of the device hanging on the test picker is electrically connected to the terminal of the socket installed at the test site. As a result, a performance test of the device is performed for a set time.

After the device is tested by this operation, the test picker moves along the XY axis to seat the tested device in the unloading buffer, so the unloading picker picks it up and places the empty customer in the unloading position according to the test result. It will be unloaded into the tray.

As described above, when the unloading picker adsorbs and classifies the device in the unloading buffer, the test picker is transferred to the loading buffer side again along the XY axis, and the new device is moved to the test site by adsorbing the new device. This becomes possible.

However, such a conventional apparatus transfers the device because the test picker cannot adsorb the device in the loading buffer and perform the test for a predetermined time at the test site, and then cannot test the test site until it is unloaded into the unloading buffer. Due to the long cycle time, the operation rate of the expensive equipment was lowered, and it was difficult to match the work load between the processes. Therefore, in order to balance the work load between the processes, it was necessary to purchase additional expensive equipment.

In addition, the test picker had to install a separate XY axis for moving to the loading buffer, test site, and unloading buffer side, and also had to install guide rails according to the movement of the XY axis. There was also a problem that occupies a large area.

The present invention has been made to solve such a conventional problem, by configuring a pair of test picker of the rotary type to one side of the test picker to pick up the device in the loading buffer to be transported to the test site for testing for a set time When the other side of the test picker to transfer the tested device to the unloading buffer side is to maximize the operation rate of expensive equipment.

According to an aspect of the present invention for achieving the above object, it is installed on the upper plate located directly above the test position to rotate the axis according to the drive of the drive motor, and to detect the rotation amount of the shaft to control the drive of the drive motor An axial rotation control means, a guide rail which is symmetrically fixed on a rotating body fixed to the lower end of the shaft, and rotates together with the shaft, an elevating block coupled to each of the guide rails for elevating movement, and mounted on the elevating block At least one picker for adsorbing a cylinder, a cam cam plate having a cam groove fixed to the top plate to be positioned outside the guide rail, and having one end of each lifting block fitted on an outer circumferential surface thereof, and the test position and device loading / unloading position. A movable cam plate formed separately from the cam plate so as to correspond to the end, and one end of each of the movable cam plates is fixed so that the picker is in a test position. A horizontal handler comprising picker lifting means for elevating the picker when positioned at the device loading / unloading position, and picker control means for detecting the top dead center and the bottom dead center of the picker and controlling the driving of the picker lifting means A device loading and unloading apparatus at the test site of is provided.

1A to 1C are longitudinal cross-sectional views showing the configuration of the present invention;

1A shows a state in which a picker located at a test position and a loading / unloading position is located at a top dead center

Figure 1b is a state in which the picker located in the test position and the loading / unloading position is located at the bottom dead center

Figure 1c is a state in which the picker located in the loading / unloading position is located between the top dead center and the bottom dead center

2 is a plan view of the state in which the fixing plate removed

3 is a side view of FIG. 1B

4 is a perspective view of portion “A” of FIG. 1A;

5 is a cam diagram of a cam groove formed on the outer circumferential surface of the cam plate;

Explanation of symbols for main parts in the drawings

1: base 3: top plate

4: drive motor 5: shaft

14a, 14b: guide rail 15a, 15b: lifting block

17a, 17b: Picker 21: Campan

21a: cam groove 24a, 24b: movable cam board

26a, 26b: Rotary screw 30a, 30b: Lead screw

32a, 32b: getting on and off

Hereinafter, with reference to Figures 1 to 5 showing an embodiment of the present invention in more detail as follows.

1A to 1C are longitudinal cross-sectional views showing the configuration of the present invention, and FIG. 2 is a plan view of a state in which the fixing plate is separated, and the present invention provides a through hole 1a on a base 1 located directly above the test position T. The side plate 2 is fixed to both sides of the through hole, and the top plate 3 is fixed to the top surface of the side plate.

In addition, the upper plate 3 located directly above the test site is provided with a shaft 5 which rotates in accordance with the driving of the driving motor 4, and the driving pulley 6 is fixed to the shaft of the driving motor 4. The driven pulley 7 is fixed to the shaft, and the timing pulley 8 is wound around the driving pulley and the driven pulley so that the shaft 5 rotates clockwise or counterclockwise according to the driving of the driving motor 4.

The shaft 5 which rotates according to the driving of the drive motor 4 is smoothly rotated by the bearing 10 in the sleeve 9 fixed to the upper plate 3.

The amount of rotation of the shaft 5 supported by the upper plate 3 is controlled by the shaft rotation control means for controlling the drive of the drive motor 4, the shaft rotation control means is fixed to the shaft (5) together with the shaft As the detection piece 11 is detected by being installed in the rotating detection piece 11 and the device loading / unloading position L and the test position T on the fixed plate 35 supporting the upper end of the shaft, respectively. It consists of a pair of sensors 12a and 12b which control drive of the drive motor 4.

In addition, the rotary body 13 is fixed to the lower end of the shaft 5 and the guide rails 14a and 14b are fixed to be symmetrically on the rotary body so as to rotate together with the shafts. Lifting blocks 15a and 15b are coupled to each other.

At least one or more holding devices 16 in the device loading / unloading position L and the test position T are provided in the elevating blocks 15a and 15b which are moved up and down along the guide rails 14a and 14b. Pickers 17a and 17b are provided, and the pickers 17a and 17b are soft pads 18 and springs 20 are elastically installed between the pushers 19 to pneumatically connect the device 16. It is a vacuum pad which adsorbs.

Meanwhile. A cylindrical cam plate 21 having a cam groove 21a formed on an outer circumferential surface thereof is fixed to the bottom of the upper plate 3 so that guide rails 14a, 14b and lifting blocks 15a, 15b are provided inside the cam plate 21. One end of the elevating blocks 15a and 15b is fitted into the cam groove 21a formed on the outer circumferential surface of the cam plate 21.

At this time, a bearing 22 is installed in each of the lifting blocks 15a and 15b so that the bearing is fitted into the cam groove 21a, which is moved by the rotation of the shaft 5 to move the lifting blocks 15a and 15b. One end of the elevating blocks 15a and 15b is inserted into the cam groove 21a to prevent noise from occurring and smoothly operate the same.

In addition, the cam groove 21a formed on the outer circumferential surface of the cam plate 21 forms an inclined section that gradually decreases toward the test position in the device loading / unloading position section, which is a horizontal section, as shown in FIG. It is formed to form a horizontal section again.

This is to reduce the cycle time according to the test to the nearest position with the socket 23 installed in the test site when the test position T is located.

At a point coinciding with the test position T and the device loading / unloading position L of the cam plate 21 in which the cam groove 21a is formed along the outer circumferential surface, the movable cam plates 24a and 24b formed separately from the cam plate 21 are provided. The picker is lifted and lowered when the pickers 17a and 17b are positioned at the test position T and the device loading / unloading position L at one end of each of the movable cam plates 24a and 24b. Picker lifting means is provided.

As shown in Figs. 1A and 2, the picker elevating means has rotation screws 26a and 26b having driven pulleys 25a and 25b symmetrically mounted on the upper plate 3 so as to be capable of idling. Drive pulleys 28a and 28b are fixed to the drive shafts of 27a and 27b, and timing belts 29a and 29b are wound between the drive pulley and the driven pulley so that the motors 27a and 27b are driven. The driven pulley and the fixed rotating screw (26a, 26b) is to be rotated.

Lead screws 30a and 30b are screwed to each of the rotating screws 26a and 26b, and one end of the lead screw is fixed to the cam plate 21 by rotation of the rotating screws 26a and 26b. It is fitted to the elevating pieces 32a and 32b to elevate along the guide rails 31a and 31b, and the elevating pieces 32a to the lead screws 31a and 31b fitted to the elevating pieces 32a and 32b. Elastic members 33a and 33b for biasing the upper and lower sides 32b are provided.

This is to ensure that the movable cam plates 24a and 24b are always biased upward by the elastic members 33a and 33b so as to coincide with the cam grooves 21a formed in the cam plate 21 when the movable cam plates 24a and 24b are positioned at the top dead center.

The top dead center and the bottom dead center of the pickers 17a and 17b for handling the device can be detected by the picker control means to control the driving of the picker lifting means.

The picker control means is provided on the detection pieces 34a and 34b fixed to the ends of the lead screws 30a and 30b, and the support pieces 36 fixed to the fixing plate 35 to detect the detection pieces 34a. When 34b is detected, it consists of a pair of sensors 37a and 37b which control the drive of the motors 27a and 27b which are the drive sources which raise and lower the pickers 17a and 17b.

The drive motor 4 and the motors 27a and 27b applied to the present invention employ a step motor which can easily adjust the rotation speed.

Referring to the operation of the present invention configured as described above is as follows.

For convenience, as shown in FIG. 1A, the pickers 17a and 17b are positioned at the top dead center of the test position T and the device loading / unloading position L, that is, one picker 17a is at least one or more. The device 16 is attracted and positioned directly above the test site, which is the test position T, and the other picker 17b is directly above the loading buffer 38, which is located in the device loading / unloading position L. It describes from the state located in.

At this time, the picker 17b positioned at the device loading / unloading position L is not positioned at the top dead center, but is waiting at an intermediate position between the top dead center and the bottom dead center as shown in FIG. 1C. Let's do it.

As described above, when the pickers 17a and 17b are positioned at the test position T and the device loading / unloading position L, the bearing 22 coupled to the lifting blocks 15a and 15b is movable. It is located in (24a) (24b), respectively.

In this state, when the motor 27a is driven to test the device 16 positioned at the test position T, the driving force of the motor is transmitted to the driven pulley 25a through the timing belt 29a to rotate the screw 26a. Since it rotates the lead screw 30a screwed to the rotary screw is lowered, and thus the lifting piece 32a coupled to the lead screw is lowered along the guide rail 31a.

As described above, when the elevating piece 32a is lowered along the guide rail 31a as shown in FIG. 3, one end of the elevating piece is fixed to the movable cam plate 24a and the movable cam plate is coupled to one end of the elevating block 15a ( 22) is fitted so that the lifting block (15a) is lowered along the guide rail (14a) fixed to the rotating body (13).

When the lifting block 15a is lowered and the pusher 19 installed on the picker 17a presses the pressing piece of the socket 23, the pressing piece opens outward and the terminal of the socket is exposed to the outside so that the picker 17a is exposed to the picker 17a. The lead of the adsorbed device 16 is electrically connected to the terminal of the socket, thereby testing the performance of the device for a set time.

The structure of the socket installed at the test site and electrically connected to the lead of the device is already known, and thus, a detailed description thereof will be omitted while not shown.

As described above, the driving of the motor 27a, which rotates the rotation screw 26a and lowers the picker 17a, supports the detection piece 34a fixed to the upper end of the lead screw 30a as shown in FIG. The picker 17a is positioned at the bottom dead center because the sensor 37b fixed to the lower part of the sensor stops when the sensor 37b is fixed.

While the picker 17a positioned at the test position T is lowered to the bottom dead center by the driving of the motor 27a to test the performance of the device for a set time, the picker positioned at the device loading / unloading position L ( 17b) descends to the bottom dead center in accordance with the drive of another motor 27b to absorb the device contained in the loading buffer 38.

As described above, the pickers 17a and 17b positioned at the test position T and the device loading / unloading position L are lowered to the bottom dead center, respectively, as shown in FIG. After the adsorption of the device contained in the buffer 38, the motors 27a and 27b are reversely driven as opposed to the above, so that the pickers 17a and 17b respectively adsorbing the devices rise to the top dead center. As the pickers 17a and 17b rise to the top dead center, the detection pieces 37a and 34b fixed to the upper ends of the lead screws 30a and 30b are fixed to the upper side of the support piece 36. Can be detected by controlling the driving of the motors 27a and 27b.

As described above, when the elevating pieces 32a and 32b reach the top dead center due to the re-drive of the motors 27a and 27b, the elastic members 33a and 33b are fitted to the lower ends of the lead screws, so that the elevating pieces are excessively raised. Since the elevating piece is biased upward, the cam groove 21a formed on the outer circumferential surface of the cam plate 21 and the cam groove formed on the movable cam plates 24a and 24b are exactly matched.

In this way, after the pair of pickers 17a and 17b have ascended to the top dead center in the state where the devices to be tested and the devices to be tested are raised to the top dead center, the drive motor 4 for rotating the shaft 5 is driven again. The driving force of the motor is transmitted to the driven pulley 7 side through the timing belt 8, and the shaft 5 rotates accordingly.

When the shaft 5 is rotated by the driving motor 4, the rotating body 13 is fixed to the shaft, and the pair of lifting blocks 15a and 15b are installed on the rotating body. The positions of the installed pickers 17a and 17b are reversed by 180 degrees.

In the above operation, the bearing 22 coupled to one end of the elevating blocks 17a and 17 is fitted in the cam groove 21a formed in the cam plate 21, so that the picker 17a on which the tested device is adsorbed is loaded into the device. While moving to the unloading buffer side located at the unloading position L, the cam groove 21a is moved up, and on the contrary, the picker 17b to which the device to be tested is adsorbed is moved to the test position T side. It descends along (21a) to maintain the state close to the socket (23).

This operation is possible because the sensor 12b fixed on the fixed plate 35 senses the detection piece 11 fixed to the shaft 5 to control the driving of the drive motor 4.

Therefore, the above-described operation can be repeatedly performed, and the picker 17a positioned at the device loading / unloading position L is lowered to the bottom dead center to simultaneously unload the tested device into the unloading buffer. When the motor 27b is driven up again, it does not rise to the top dead center but waits for the device to be tested to be supplied at an intermediate position between the top dead center and the bottom dead center as shown in FIG. 1C.

This is to minimize the time according to the adsorption of the device to be tested.

In this state, when the unloading buffer loaded with the tested device is moved to the unloading position, when the loading buffer moving together with the same stroke is transferred, the elevating piece 32b positioned at the intermediate point of the guide rail 31b is moved to the motor 27b. Since the lowering point is lowered to the bottom dead center by driving again, the adsorption pad 18 absorbs the device in the loading buffer and then rises to the top dead center.

What has been described so far is that the pair of pickers 17a and 17b adsorb the device in the loading buffer 38 while testing the device 16 at the test position T and then unload the tested device into the unloading buffer. To explain the process of positioning the device to be tested at the test position at 180 ° inversion so that it is located at the device loading / unloading position (L), the same operation is repeatedly performed as long as the device to be tested is supplied through the loading buffer. It is understandable to perform.

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

First, when one picker transfers the device to be tested to the test position, the other picker moves the tested device to the device loading / unloading position, so the cycle time for loading and unloading the device is 1/2. It can be reduced, thereby maximizing the utilization rate of expensive equipment, thereby doubling the productivity.

Second, since a pair of pickers rotates about an axis, the device is loaded and unloaded to the test site, thereby eliminating the need for a separate rail according to the transport of the pickers, thereby enabling the compactness of the horizontal handler.

Third, there is a limit in adjusting the lifting amount of the device due to the control of the lowering and rising amount of the device adsorbed to the picker according to the driving of the cylinder, the present invention can adjust the lifting amount of the picker according to the driving of the step motor Thus, the stroke of the picker can be easily adjusted according to the thickness of the device to be tested.

Fourth, since the device pushing pressure at the test site can be easily adjusted according to the effects described above, the lead vent of the device due to excessive pushing can be prevented.

Claims (8)

A shaft which is mounted on the upper plate located directly above the test position and rotates according to the driving of the driving motor, shaft rotation control means for detecting the rotation amount of the shaft to control the driving of the driving motor, and a rotation fixed to the lower end of the shaft. A guide rail that is symmetrically fixed on the whole and rotates together with the shaft, a lift block coupled to each of the guide rails to move up and down, at least one picker installed on the lift block to adsorb a device, and the guide rail. A cylindrical cam plate which is fixed to the upper plate so as to be located outside of the cam plate and has an outer circumferential surface formed with a cam groove into which one end of each elevating block is fitted; a movable cam plate formed separately from the cam plate in accordance with the test position and the device loading / unloading position; When the picker is secured to the movable campane and the picker is in the test position and the device loading / unloading position, the picker Apparatus for loading and unloading a device at a test site of a horizontal handler, comprising: a picker lifting means for elevating a picker; and a picker control means for detecting driving of the picker lifting means by detecting a top dead center and a bottom dead center of the picker. . The method of claim 1, The cam groove formed on the outer circumferential surface of the cam plate forms an inclined section that gradually decreases toward the test position in the device loading / unloading position section, which is a horizontal section, and the horizontal position of the horizontal handler is formed in the test position again. Device loading and unloading device at test site. The method of claim 1, The shaft rotation control means is fixed to the shaft and rotated together with the shaft, and installed in the device loading / unloading position and the test position on the fixed plate for supporting the upper end of the shaft respectively, the detection piece is detected as the detection piece is detected Apparatus for loading and unloading devices at the test site of a horizontal handler, comprising a pair of sensors for controlling driving. The method of claim 1, And the picker is a soft pad and is a vacuum pad elastically installed between springs between the pushers to suck the device by pneumatic device. The method of claim 1, Device for loading and unloading device at the test site of the horizontal handler, characterized in that the bearing is mounted on each lifting block so that the bearing is fitted in the cam groove. The method of claim 1, The elevating means includes a motor for rotating a rotating screw installed on the upper plate so as to be idling, a lead screw screwed to the rotating screw, and a guide rail fixed to the cam plate by one end of the lead screw to be rotated by the rotating screw. Device loading and unloading device at the test site of the horizontal handler, characterized in that the lifting lifting section. The method of claim 1, Device for loading and unloading device at the test site of the horizontal handler, characterized in that an elastic member for biasing the elevating piece in the upward direction is installed on the lead screw fitted to each elevating piece. The method according to claim 1 or 6, The picker control means comprises a pair of sensors for controlling the driving of a motor, which is a driving source for elevating the picker as the detection piece is mounted on the support piece fixed to the tip of each lead screw and the support piece fixed to the fixed plate. A device loading and unloading device at the test site of a horizontal handler.