KR20020066488A - Stopper assembly for stopping tray in handler - Google Patents

Abstract

PURPOSE: A tray stop apparatus of a handler is provided to place a tray transferred from the other side at a correct position with securing a smooth transform of the tray during the transform operation by a tray transfer of the handler as well as to constrain the tray on the positing accurately at the same time. CONSTITUTION: A tray stop apparatus of a handler for removably supporting both sides of a tray to align a tray transferred from a side of test site of the handler to a predetermined position includes a stopper(810) for supporting a front part of the proceeding direction of the tray and a clamp(850) for supporting a backward part of the proceeding direction of the tray. The stopper(810) includes a fixed bracket for supporting a side frame of the test site, a fixing member for fixing the fixed bracket, an operating axis for linearly moving along an axis of the fixing member, a supporting member for supporting the tray by installing at a side of the operating axis with a circular motion, an operating piece for linearly moving the operating axis with a circling motion by an external operating means, a supporting block for supporting the supporting member during the circling motion of the supporting member, a first elastic member for supplying a resilient force to return the supporting member to an original position and a second elastic member for supplying a resilient force to return the operating axis to an original position. The clamp(850) includes a bracket for installing in such a way that it is fixed to the opposite side frame of the test site frame installed the stopper(810), a supporting member for supporting a backward part of the tray proceeding direction, a restriction member for restricting the circling range of the supporting member and an elastic member for supplying a resilient force to return the supporting member to an original position.

Description

Stopper assembly for stopping tray in handler}

The present invention relates to a stop device that serves to stop the progress of the tray in the handler, and in particular, the tray is supported by supporting both ends of the tray from one side to the other side at a predetermined position at the test site of the handler. It relates to a tray stop device of a handler for positioning.

In general, devices such as a memory or non-memory semiconductor device, and modules that are appropriately configured on a single substrate, are shipped after undergoing various test procedures after production. Refers to the device being used to automatically test the same device and module.

Typically, many of these handlers not only perform general performance tests at room temperature, but also create extreme conditions of high and low temperatures through electrothermal heaters and liquefied nitrogen injection systems in a closed chamber at a test site, thereby creating the device and the module It is also possible to carry out high and low temperature tests to test whether the lamp can perform its normal function under such extreme temperature conditions.

1 illustrates an example of a handler capable of performing a high temperature and a low temperature test of a device as described above, wherein the devices to be tested contained in the user tray of the loading unit 10 have a first picker robot that linearly moves on an XY axis. 31 is temporarily held in the buffer unit 40, and then transferred to the exchange unit 50 by the second picker robot 32 and remounted in the test tray T.

The test tray T in which the devices to be tested are remounted is transferred to a test site 70 located behind the handler by a separate transfer means (not shown), and then hot or cold at the test site 70. You will be tested.

Here, the test site 70 has three sealed chambers laterally connected to test the devices under a predetermined temperature while sequentially transporting the test trays T by creating a hot or cold environment therein. These chambers are configured to include a preheating chamber 71 for preheating the devices to a high temperature or a low temperature, and the devices passed through the preheating chamber 71 to a test socket (not shown) combined with a separate test equipment. And a test chamber 72 for performing tests in a high or low temperature state, and defrosting to cool the devices tested through the test chamber 72 or to remove frost by heating to return to the original room temperature state. It consists of a chamber 73.

Meanwhile, the test tray T passing through the defrosting chamber 73 of the test site 70 is transferred to the exchange unit 50 again, and the tested devices are then buffered by the second picker robot 32. After temporarily mounting on the 40, the first picker robot 31 is classified and mounted on the predetermined tray of the unloading unit 20 according to the test result.

In the handler as described above, when the device is tested in the test chamber 72 of the test site 70, the tray T of the test chamber 72 is transferred to the defrosting chamber 73 by the tray transfer 75. In addition, the trays T of the preheating chamber 71 are simultaneously slid to the test chamber 72 for the test, and the trays T are transferred from the preheating chamber 71 to the rear portion of the test chamber 72. Stopper 80 is provided to stop the test chamber 72 at the correct position of the test chamber 72. The stopper 80 has a tray T at the side of the chamber during the transfer operation of the tray by the tray transfer 75. The tray support is released to allow movement.

However, the tray stoppers 80 as described above may restrict the tray T at the exact position when the tray transferred from the other side is positioned at the right position while ensuring the smooth transfer of the tray during the tray transfer operation as described above. However, in the above-described conventional handler, the tray transfer operation by the tray transfer 75 is made very fast, and the gap between the trays to be conveyed is very narrow, making it difficult to precisely control the operation of these tray stoppers. There was a risk of frequent malfunctions.

Accordingly, in the conventional handler, there was a problem in that the feed speed of the tray could not be made high for accurate operation of the stop device, and this caused a limit in reducing the overall index time of the handler, causing a decrease in test efficiency.

Therefore, the present invention has been made to solve the above problems, while ensuring the smooth transfer of the tray during the transfer operation of the tray by the tray transfer of the handler while the tray transferred from the other side is located at the exact position of the chamber and exactly It is an object of the present invention to provide a tray stop device for a handler that can restrain the tray at that position.

1 is a plan view schematically showing an example of a conventional general handler configuration

Figure 2 is a perspective view showing a state in which the tray stop device according to the present invention is installed at the test site of the handler

3 is an enlarged perspective view of part X of FIG. 2 showing a stopper of the tray stop device of FIG.

4 is a perspective view of the stopper of FIG. 3 viewed from another angle;

FIG. 5 is a view from the portion A of the stopper of FIG. 3; FIG.

6 is an enlarged perspective view of a portion Y of FIG. 2 showing a clamp of the tray stop device of FIG.

7 is a plan view of the clamp of FIG.

Explanation of Reference Symbols in Major Parts of Drawings

721a, 721b-frame 810-stopper

811-Fixed Bracket 812-Support Block

813-Fixture 814-Shaft

815-Support Bar 816-Roller

817-Working Part 819-Tension Spring

820-Compression Springs 830-Pneumatic Cylinders

850-Clamp 851-Bracket

852-Supporting Members 853-Restricting Members

854-Tension Spring 855-Roller

856-Sensor 857-Sensing Bracket

T-tray

In order to achieve the above object, the present invention is a tray stop device for releasably supporting both sides of the tray in order to align the tray transported laterally at the test site of the handler to a predetermined position, in one frame of the test site A fixed bracket to be fixed, a fixed body fixed to the fixed bracket, an actuating shaft installed on the fixed body so as to be linearly movable in its own axial direction, and a support pivotally installed on one end of the actuating shaft to support the tray A member, an operating piece having one end coupled to the actuating shaft and an intermediate portion pivotably coupled to the fixed bracket via a hinge shaft to pivot by an external actuating means to linearly move the actuating shaft; Support block is installed to support the support member when the support member swings by the tray , And a stopper for supporting the compression spring is configured to provide a restoring force for returning to a tension spring and, in place the operating shaft to provide a restoring force for returning to its original position the support member, the front portion of the tray progress direction; A bracket fixedly mounted to the frame opposite to the test site frame on which the stopper is installed, a support member pivotally mounted on the bracket to support the rear portion of the tray traveling direction, one end coupled to the support member, and the other end to the frame. Consists of a limiting member that is supported in contact with the limiting the turning range of the support member, and a tension spring for providing a restoring force for returning the support member to its original position, and a clamp for supporting the rear portion of the tray in the traveling direction A tray stop device for a handler is provided.

According to one aspect of the present invention, rollers in rolling contact with the surface of the tray during the transfer operation of the tray are provided at each end of the support member of the stopper and the support member of the clamp.

In addition, when the support member is coaxial with the working shaft, one end of the end thereof is supported in contact with the upper end of the working shaft, thereby preventing further rotation.

The clamp further includes a sensor fixed to the frame and a sensing bracket installed on one side of the support member to detect whether the clamp returns to its original initial position. .

Hereinafter, an embodiment of a tray stop apparatus of a handler according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a perspective view showing a tray stop apparatus according to the present invention installed at a test site 70 (see FIG. 1) of a handler. In the drawings, reference numerals 721a and 721b denote test chambers 72 of the test site 70. 1) shows a frame installed in the rear portion, and reference numeral 722 denotes a guide rail in which the upper and lower ends of the tray T are movably supported.

As shown in FIG. 2, the tray stop device of the present invention is installed in the middle of one side frame 721a and is moved forward (arrow) of the tray T transferred from the preheating chamber 71 (see FIG. 1). A stopper 810 for releasably supporting and stopping the portion, and a clamp 850 is installed in the middle of the other frame (721b) to support the rear portion of the tray in the traveling direction.

3 to 5 show the configuration of the stopper 810 as described above, the stopper 810 is a fixed bracket 811 fixed to the frame 721a, and a rectangular parallelepiped form fixed to the fixed bracket 811. Of the fixed body 813, the working shaft 814 provided to the fixed body 813 in a linear axial direction thereof, and the end of the working shaft 814 so as to be pivotable. The support bar 815 which is in contact with the corner portion of the) and one end is coupled to the operating shaft 814 and the middle portion is pivotally coupled to the fixing bracket 811 via the hinge shaft 818 to the stopper ( 810 is provided with a working piece 817 to move the working shaft 814 by the operation of the pneumatic cylinder 830 installed in the vicinity.

An end portion of the support bar 815 is provided with a roller 816 which comes into contact with the outer surface of the tray T during the transfer operation of the tray.

The support bracket 812 is fixed to the fixing bracket 811 to support the support bar 815 at a predetermined position when the support bar 815 is turned by the tray T. The tension spring 819 is coupled to the end of the 815 and the working shaft 814 to provide an elastic force that the support bar 815 pivots and returns to its original position.

In addition, one end of the working shaft 814 is supported by the fixed body 813 and the other end is supported by the end of the working shaft 814 compression spring for supporting the operating shaft 814 against the fixed body 813 820 is combined.

The fixed body 813 is provided with a guide groove 813a of the long hole type is coupled to the engaging projection 814a formed at the end of the operating shaft 814 of the operating shaft 814 in the axial movement of the operating shaft 814 It is intended to guide the movement.

And, as shown in FIG. 5, the support bar 815 is coupled to the operating shaft 814 to prevent the support bar 815 from turning in the opposite direction of the tray travel direction when the support shaft 814 is coaxial with the operating shaft 814. The working shaft 814 is in contact with and is prevented from rotating further.

6 and 7 show the configuration of the clamp 850 of the tray stop device of the present invention, the clamp 850 is pivoted to the bracket (851) and the bracket (851) fixed to the frame 721b. A substantially L-shaped support member 852 which is installed to support the tray T, and one end thereof is coupled to the support member 852, and the other end is coupled to the bracket 851, thereby supporting the support member 852. The tension spring 854 to impart an elastic force to return to its original position, and one end is screwed to the support member 852 and the other end is in contact with the frame 721b so that the support member 852 is connected to the tension spring 854. It consists of a limiting member 853 which prevents further rotation.

At the end of the support member 852, a roller 855 is provided that comes into contact with the outer surface of the tray during the transfer operation of the tray.

On the other hand, the clamp 850 may occur when the clamp 850 is caught by the tray (T) due to any cause during the transfer operation of the tray does not return to the original position, the return of the clamp 850 The sensor 856 for detecting the clamp posture is attached to the frame 721b in which the clamp 850 is installed so as to allow the operator to make a proper adjustment. The support member 852 of the clamp 850 is located at one side of the clamp 850. A sensing bracket 857 sensed by the sensor 856 is attached.

Therefore, when the clamp 850 does not return to the initial position, the sensor 856 and the sensing bracket 857 do not coincide with each other, and the sensor unit 856 detects this to control the operation of the handler ( (Not shown).

The tray stop device of the present invention configured as described above operates as follows.

When the tray T is slid along the guide rail 722 by the operation of the tray transfer 75 (see FIG. 1) at the test site 70 (see FIG. 1) of the handler, the preheat chamber 71 (see FIG. 1). The tray (T), which is located at), moves while pushing the support member 852 of the clamp 850, whereby the support member 852 of the clamp 850 is pivoted by the tray.

At this time, since the support member 852 receives a force to return to its original position by the tension spring 855, the roller 855 at the end of the support member 852 comes into contact with the outer surface of the tray T in progress.

When the tray T is fully positioned past the clamp 850 and in the test chamber 72, the clamp 850 returns to the initial position, and the tray supports the support member 852 of the clamp 850. As the rotation of the < Desc / Clms Page number 5 > is limited, its rearward direction is supported by the support member 852.

On the other hand, the stopper 810 is operated as follows, when the transfer operation of the tray is started, the pneumatic cylinder 830 installed near the stopper 810 is operated to push the end of the operating piece 817, and thus actuated The piece 817 pivots about its hinge axis 818 and pulls the operating shaft 814 toward the stationary body 813, thereby releasing the support state of the tray T by the support bar 815 to release the tray. (T) can move.

Subsequently, the movement of the tray T progresses and the forward direction of the tray passes through the stopper position, and at the same time, the pneumatic cylinder 830 is operated again to release the contact with the working piece 817, thereby contracting. The working shaft 814 receives a force to return to its original position by the elastic force of the compression spring 820, and the roller 816 at the end of the support bar 815 comes into contact with the outer surface of the tray T in progress. At this time, the support bar 815 is able to turn in compliance with the progress of the tray, so that the progress of the tray can be made smoothly.

Therefore, while the tray T is completely out of the stopper position, the support bar 815 of the stopper 810 is completely returned to the initial state, and the tray T is conveyed from the preheating chamber 71 (see FIG. 1). It comes in contact with the edge.

At this time, the tray (T) has been transferred from the preheating chamber 71 is to turn while pushing the support bar 815, the turning support bar 815 is limited by the support block 812 is turning. Therefore, the tray T cannot proceed any more and stops at that position, and then the tension spring 819 is aligned at the correct position of the test chamber 72 by the elastic force to restore the support bar 815.

As described above, according to the tray stop device of the present invention, while the tray is transported at the test site of the handler, the tray transferred from the other side reaches the correct position of the chamber while ensuring the smooth transfer of the tray. Since it can be restrained, the probability of jam occurring during the test is significantly reduced, so that the test can be smoothly progressed and the feeding speed of the tray can be increased, thereby reducing the test time.

Claims (9)

A tray stop device for releasably supporting both sides of a tray for aligning a tray transferred laterally at a test site of a handler to a predetermined position, A fixing bracket fixed to one frame of the test site, a fixing body fixed to the fixing bracket, an operating shaft mounted on the fixing body so as to linearly move in the axial direction thereof, and pivotally mounted at one end of the operating shaft. A support member for supporting a tray and an operating piece having one end coupled to the operating shaft and an intermediate portion pivotably coupled to the fixed bracket via a hinge shaft to pivot by an external operating means and to linearly move the operating shaft. And a support block installed on the fixing bracket to support the support member when the tray is pivoted by the tray, a first elastic member providing a restoring force to return the support member to its original position, and returning the operating shaft to the original position. A stopper configured of a second elastic member to provide a restoring force, the stopper supporting a front portion of the tray in a traveling direction; A bracket fixedly mounted to the frame opposite to the test site frame on which the stopper is installed, a support member pivotally mounted on the bracket to support the rear portion of the tray traveling direction, one end coupled to the support member, and the other end to the frame. And a clamp for supporting the rear portion of the tray in the forward direction of the tray, the restraining member being supported in contact with and limiting the turning range of the supporting member, and the elastic member providing a restoring force for returning the supporting member to its original position. A tray stop device for a handler. [Claim 2] The tray stop device of claim 1, wherein a roller is in contact with the surface of the tray during the transfer operation of the tray. The tray stop device of claim 1, wherein the first elastic member of the stopper is a tension spring having one end coupled to the support member and the other end coupled to the working shaft. 2. The handler of claim 1, wherein the second elastic member of the stopper is a compression spring having one end supported by the fixed body and the other end supported by the end of the working shaft to support the working shaft with respect to the fixed body. Tray stop device. The tray stop device of claim 1, wherein the support member is supported in contact with an upper end of the operating shaft when the support member is coaxial with the operating shaft to prevent rotation of the support member. [Claim 2] The tray stop device of claim 1, wherein a roller is installed at an end of the support member of the clamp to contact the tray surface during rolling operation. The method of claim 1, wherein the clamp further comprises a sensor fixed to the frame and a sensing bracket installed on one side of the support member to detect whether the clamp is returned to its original position. A tray stop device for a handler. According to claim 1, The elastic member of the clamp tray stop device of the handler, characterized in that the one end is coupled to one side of the support member and the other end is a tension spring coupled to the bracket. 2. The tray stop device of a handler according to claim 1, wherein the actuating means for pivoting the actuation piece of the stopper is a pneumatic cylinder.