JPH0729484U - Test tray positioning mechanism for IC test handler and test tray used for the device - Google Patents

Abstract

(57) [Summary] [Purpose] Some test trays used for IC test handlers are made of metal and resin. If the thermal stresses imparted to these trays are not adequately removed, the trays will undergo dimensional changes. If the device is supplied or discharged as it is, picking of the device may fail due to dimensional change. The present invention provides a mechanism that minimizes this thermal dimensional change and prevents picking mistakes. [Configuration] A center position hole is provided at the center of one side of the test tray. A side positioning arm and a center positioning pin are provided in the discharge part and the supply part of the handler so that the center position of the test tray is always caught.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 Regarding the positioning of the test tray in the device ejection section and supply section of the IC test handler.

[0002]

[Prior art]

 The conventional technique will be described with reference to FIG. Inside the IC test handler, a test tray 11 made of metal is used as a means for transporting the device 16. In this, a plurality of carrier modules 15 are held in a floating state, and a device 16 is mounted on each carrier module 15. The IC test handler picks the device 16 at the supply unit and stores it in the test tray 11. After that, the device 16 is transported together with the test tray 11, tested by the IC tester test head unit, transported while being stored in the test tray 11, picked by the discharge unit, and stored in the customer tray.

When the device 16 is tested by an IC test apparatus, the device 16 may be tested in a normal temperature atmosphere and also in a high temperature and low temperature atmosphere for its performance. A high temperature and low temperature atmosphere is created in a temperature-controlled room inside the IC test handler, and the device 16 and the test tray 11 are tested under the same atmosphere in the test head section after the ambient temperature is sufficiently reached. To be done. In this, the device 16 tested at high temperature is cooled to near room temperature, while the device 16 tested at low temperature is warmed to near room temperature and transported to the discharge part.

However, although the temperature-controlled room can accommodate a large number of test trays 11, the test trays 11 that are first stored are sequentially stored in order from the constant-temperature room outlet side, and are carried out from the temperature-controlled room in a short time. At this time, the test tray 11 expands or contracts due to thermal deformation, so that dimensional change occurs. In this state, since the positioning pin 19 is arranged on the side surface 12 side of the test tray 11 when it is sent to the carry-out section, the dimensional change is remarkable as the distance from the positioning pin 19 increases. Although not shown, the pick place (device picking mechanism) may fail picking such as the device 16a.

[0005]

[Problems to be solved by the device]

 An object of the present invention is to provide a mechanism capable of reliably picking a device even when the temperature of the test tray itself has been sent to the unloading section before the temperature has sufficiently returned to room temperature as described above. .

[0006]

[Means for Solving the Problems]

 (Claim 1) At each position where the test tray 11 stops at the discharge part and the supply part, two side positioning arms 21a, 21 are provided at two points separated from each other on one straight line parallel to the moving direction. Hold b in line symmetry. The side positioning arm 21 makes a rotational reciprocating motion between 0 ° and 90 ° or more. The center positioning pin 23 is located on the opposite side of the side positioning arm 21 with the test tray 11 in between, and is provided at the center position of the distance between the side positioning arms 21. The center positioning pin 23 linearly reciprocates in a direction perpendicular to the moving direction of the test tray 11. The tip of the center positioning pin 23 has a conical shape 24, and a protrusion 25 is provided near the center.

(Claim 2) At each position where the test tray 11 stops at the discharge part and the supply part, two side positioning shafts are provided at two points apart from each other on one straight line parallel to the moving direction. 22a and 22b are provided. The side positioning shaft 22 linearly reciprocates in a direction perpendicular to the moving direction of the test tray 11. Rollers 31a and 31b capable of rotating are attached to the tip of the side positioning shaft 22. Further, the roller 31 is in a floating state with respect to the mounting shaft 32 and has a spring 33 property so as to have a restoring property such that the center of the mounting shaft 32 is always maintained. The center positioning pin 23 is the same as that described in the means for solving the problems of the first aspect, and is provided at the same position.

(Regarding Claim 3) The test tray 11 is provided with a center position hole 26 in which the center positioning pin 23 is aligned with the center position of the side surface 14 on the side of the center positioning pin 23.

[0009]

[Action]

 (Claim 1) The two side positioning arms 21a and 21b rotate with the same thrust from the 0 degree position to the 90 degree or more position. Since the two side positioning arms 21 are attached symmetrically with each other, the two side positioning arms 21 are moved to approximately 90 degrees and balanced by sandwiching the two side surfaces 12 and 13 of the test tray which are perpendicular to the moving direction. Since they are moved by the same thrust, the test tray 11 is arranged in the center between both side positioning arms 21 and is not biased to either side.

The center positioning pin 23 extends in a direction perpendicular to the moving direction of the test tray 11 and is inserted into a center position hole 26 formed in the side surface 14 of the test tray 11. The conical shape 24 at the tip has a function of reliably catching the center position hole 26 even if the stop position of the test tray 11 is slightly displaced. At the same time, since the diameter of the conical shape 24 gradually increases as the pin goes deeper, the center position hole 26 also moves slightly to try to fit in the center position hole 26 and also has a function of correcting a slight displacement of the test tray 11. . The central portion of the pin 23 forms a cylinder, and when it is inserted there, it accurately positions with respect to the moving direction of the test tray 11. Next, the protrusion 25 of the center positioning pin 23 abuts on the side surface 14 of the test tray and pushes it by a predetermined distance to perform positioning in a direction perpendicular to the moving direction of the tray.

(Claim 2) The side positioning shaft 22 extends in a direction perpendicular to the moving direction, and is moved by pressing the two side surfaces 12 and 13 of the test tray 11 with the two side positioning shafts 22. Position in the axial direction. The roller 31 at the tip serves to smoothly move the side positioning shaft 22 by rotating the side surfaces 12 and 13 of the test tray. Further, by making the center portion of the roller 31 have a flooring state and having a spring property, it is possible to sandwich the test tray 11 in correspondence with a slight displacement of the stop position of the test tray 11.

(Claim 3) The center position hole 26 formed at the center of the side surface 14 of the test tray 11 on the side of the center positioning pin 23 is formed in the center of the side surface 14 of the test tray 11. Functions to determine the reference position.

[0013]

【Example】

 Embodiments of claims 1 and 3 will be described with reference to FIG. The side positioning arm 21 is L-shaped. It is fixed to the shafts of two rotary actuators 27, which are arranged at a distance almost equal to the width of one side surface 14 in the moving direction of the test tray at the stop points of the discharge section and the supply section. As a result, the two side positioning arms 21a and 21b reciprocate while rotating between the positions 41 and 42 to the positions 43 and 44. The center positioning pin 23 is located on the opposite side of the side positioning arm 21 with respect to the test tray 11, and is fixed at the center position of the distance between the two side positioning arms 21. The center positioning pin 23 linearly reciprocates in a direction perpendicular to the moving direction of the test tray 11. Further, the tip of the center positioning pin 23 has a conical shape 24 and has a protrusion 25 from the center.

Initially, the side positioning arm 21a has already rotated from the position 41 to the position 43 and is stopped by the operation of the rotary actuator 27a. Although not shown in the figure, the test tray 11 placed in the temperature-controlled room is placed on two belt conveyors rotated by a motor and conveyed to the discharge section or the supply section. When the load sensor 28 confirms the presence of the test tray 11 against the side positioning arm 21a, the motor stops its operation. Next, the rotary actuator 27b operates and the side positioning arm 21b moves from the position 42 to the position 44 while rotating. At this time, since the rotary actuators 27a and 27b operate with the same thrust, the same force acts on the two side surfaces 12 and 13 perpendicular to the moving direction of the test tray 11 and balances them, without being pushed too much from one side. Located in the center.

Next, the air cylinder 29a operates, and the center positioning pin 23 is pushed out to the test tray 11 side. A center position hole 26 is formed in the center of the side surface 14 of the test tray 11, and the center positioning pin 23 enters the hole. Since the tip of the center position determining pin 23 has a conical shape 24, even if the center position hole 26 is slightly displaced, it can be inserted without trouble. When there is some deviation, the minute position of the test tray 11 is corrected as the conical shape 24 parts is inserted. When the cylindrical portion is inserted past the conical shape portion 24 of the pin, the diameter of the center position hole 26 and the diameter of the cylindrical portion match, so that the center position is determined here.

Next, the protrusion 25 provided on the center positioning pin 23 contacts the side surface 14 of the test tray and pushes the test tray 11 until it abuts on the bearing 30 on the side of the side positioning arm. As a result, the position with respect to the direction perpendicular to the moving direction is determined. FIG. 2 shows a state in which the test tray 11 is positioned about the center position hole 26 at the center of the side surface 14 of the test tray 11 as described above.

An embodiment of claim 2 will be described with reference to FIGS. 3 and 4. The side positioning shafts 22a and 22b are fixed to the shafts of the two air cylinders 29b and 29c, which are arranged at a stop position between the discharge unit and the supply unit and are arranged at a distance approximately equal to the width of one side surface 14 in the test tray moving direction. . Furthermore, rollers 31a and 31b which can be rotated are attached to the tip thereof. The roller 31 is rotatably mounted, and at the same time, the center of the roller 31 is in a floating state and the mounting shaft 32 has a spring 33 mechanism. Floating state and spring 33 property means that when a force is applied to the roller 31 from the outside, the roller 31 deviates from the center, but the center can be immediately kept on the mounting shaft 32. It means having resilience.

Initially, the side positioning shaft 22b has already extended from position 45 and stopped at position 47 with the air cylinder 29b operating. Although not shown in the figure, the test tray 11 placed in the temperature-controlled room is mounted on two belt conveyors rotated by a motor and conveyed to the discharge section or the supply section. When the load sensor 28 confirms the presence of the test tray 11 against the side positioning shaft 22b, the motor stops its operation. The air cylinder 29c is then activated and the side positioning shaft 22c extends from position 46 to position 48.

If the test tray 11 is stopped at the normal position, the side positioning shaft 22c is extended as it is, but if the stop position is shifted to the side positioning shaft 22c side, the roller 31 at the leading end is once moved. Although it hits the side surface 13 of the test tray, it floats and has a spring property, so at first it shifts its center, but gradually due to the restoring force of the spring property, it does not disengage any further and the side surface of the test tray While rotating 13, it extends and stops. In this way, the test tray 11 is sandwiched between the two side positioning shafts 22b and 22c. The operation of the center positioning pin 23 is the same as that described above.

[0020]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. When the tevice is tested in a high and low temperature atmosphere, the test tray is also in the same high and low temperature atmosphere, and the test tray made of metal expands and contracts due to thermal deformation, resulting in significant dimensional changes. . At this time, there may not be enough time to return to normal temperature. In such a case, when the device must be ejected or supplied at the pick place, the center of the test tray is positioned, so that the dimensional change at both ends should be suppressed to less than half of the conventional technology. I was able to. Therefore, it is possible to always accurately discharge and supply the device without failing to attract the device due to the displacement due to the dimensional change.

[Brief description of drawings]

FIG. 1 is a plan view showing a first embodiment.

FIG. 2 is a plan view showing the completion of operation in the first embodiment.

FIG. 3 is a plan view showing a second embodiment.

FIG. 4 is a plan view showing details of a roller.

FIG. 5 is a plan view showing a conventional technique.

[Explanation of symbols]

11 Test Tray 12 Side 13 Side 14 Side 15 Carrier Module 16, 16a Device 17 Motor 18 Belt Conveyor 19 Positioning Pins 21, 21a, 21b Side Positioning Arm 22, 22a, 22b Side Positioning Shaft 23 Center Positioning Pin 24 Conical Shape 25 Protrusion 26 Center Position Hole 27, 27a, 27b Rotary Actuator 28 Load Sensor 29, 29a, 29b, 29c Air Cylinder 30 Bearing 31, 31a, 31b Roller 32 Mounting Shaft 33 Spring 41, 42, 43, 44, 45,46,47,48 positions

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication H01L 21/68 G

Claims (3)

[Scope of utility model registration request] 1. A device discharge part of an IC test handler,
In the mechanism for positioning the test tray by the supply unit, two side positioning arms (21) held rotatably in line symmetry at each position where the test tray (11) stops between the discharge unit and the supply unit, A linear reciprocating center locating pin (23) installed at a central position between the two side locating arms (21) and a conical shape (2) provided on the center locating pin (23).
4) A test tray positioning mechanism comprising: a protrusion (25). 2. The side positioning arm according to claim 1, wherein, instead of the two side positioning arms (21), a linear reciprocating shaft (22) and a distal end of the shaft (22) are rotatable. Laura (3
1), the central part of the roller is in a floating state, and two side positioning shafts (2) having springs (33) are held.
A test tray positioning mechanism consisting of 2). 3. A test tray for accommodating and transporting a device, wherein a center position hole (26) matching the center positioning pin (23) is formed at the center of the side surface of the test tray (11) on the side of the center positioning pin (23). A test tray comprising: