KR0152121B1 - Metal tray transfer apparatus in test site - Google Patents

Abstract

The present invention relates to a metal tray conveying apparatus in a test site for transferring a metal tray heated in accordance with test conditions in a heating chamber to an upper portion of a test block installed in a test site to perform a test. More specifically, the metal tray sent out from the heating chamber can be stopped at the correct position and then transferred directly under the test block.

To this end, the present invention is installed on the metal tray 3 inlet 4 side of the test site 2 is transferred in the initial state to determine the position of the metal tray to be heated and drawn in the heating chamber (1) In order to control the transfer of the metal tray 3 and to clamp the transfer-controlled metal tray to the test block, a transfer control unit releasing the control of the metal tray, and a metal tray controlled by the transfer control unit. Clamping is carried out directly below the test block to determine the position, and then the clamping of the metal tray is released, and the clamping and conveying part which exits to the outside of the test block, and the clamping and conveying part are conveyed to the feed control part, thereby catching the locked state of the metal tray. It is configured to include a metal tray release means for releasing.

Description

Metal Tray Feeder in Test Site

1 is a cross-sectional view of a test site showing the invention.

Figure 2 is a perspective view showing a part of the clamping and conveying of the metal tray cut out.

3 is a longitudinal cross-sectional view of the operating state of FIG.

(a) is a state in which the metal tray is clamped,

(b) is a state in which the clamping of the metal tray is released.

4 is a perspective view showing a transfer control unit of a metal tray.

5 is an operating state diagram of FIG.

(a) is a state in which the stopper is raised,

(b) is a state in which the stopper is lowered.

6 is a plan view of FIG.

(a) is a state in which the stopper is raised,

(b) is a state where the stopper is rotated and lowered by a tight plate.

* Explanation of symbols for main parts of the drawings

1: Heating chamber 2: Test site

3: metal tray 4: inlet

5: guide rail 6: support block

7: stopper 10: rotation

13: plate 14: working piece

18: lead screw 20: camshaft

21: transfer block 24: slider

25: moving piece 30: finger

31: rotation block 39: pusher

The present invention relates to a metal tray conveying apparatus in a test site for transferring a metal tray heated in accordance with test conditions in a heating chamber to an upper portion of a test block installed in a test site to perform a test. More specifically, the metal tray, which is introduced into the test site from the heating chamber, is stopped at the correct position and then transferred directly under the test block.

In general, a tester that produces SOP and QFP type devices and inspects their performance, transfers the metal tray containing the devices to the test site while heating them in the heating chamber at a temperature suitable for the test conditions. The device is tested for performance.

After completing the performance test of the device in the test site as described above, the metal tray containing the device is taken out of the test site, and the device is classified according to the test result and placed in a tray made of resin.

In this tester, a transfer means for transferring the heated metal tray in the heating chamber to the inside of the test site and accurately positioned directly under the test block is required.

Conventionally, in order to determine the position of the metal tray which is heated at a constant temperature in the heating chamber and is transferred to the test site, a stopper which is respectively operated in accordance with the operation of the cylinder is installed in the test site to move up and down, and directly below the stopper. In the present invention, a belt conveyor is installed by rotating the motor to move the metal tray controlled by the stopper to the test block side.

Therefore, when the metal trays that have been heated while the stoppers are raised by the operation of the cylinder are transferred to the inside of the test site by the transfer in the heating chamber, the tip of the metal tray is caught by the stopper. .

In this way, if the belt conveyor located directly below the metal tray is rotated by the driving of the motor while the transfer of the metal tray is controlled, the metal tray is placed on the upper part of the belt conveyor and positioned directly below the test block. The metal tray mounted on the conveyor is raised to the test block side.

Accordingly, since the lead of the device contained in the metal tray is connected to the test pin of the test block, the performance of the device is checked.

However, such a conventional apparatus has the following problems.

First, the equipment cost of equipment is high because the transfer of the metal tray introduced into the test site is controlled using an expensive cylinder.

Second, the cycle time is lengthened because the driving of the cylinder is controlled by an electrical signal of the control unit.

Third, the metal tray positioned by the stopper is transferred to the lower side of the test block according to the rotation of the belt conveyor, so that the belt conveyor is easily corroded by the high temperature in the test site, and thus the life of the belt conveyor is reduced.

Fourth, since the belt conveyor was rotated by the driving of the motor to transfer the metal tray to the lower side of the test block, the conveyed metal tray could not be aligned exactly under the test block. It was frequently found that it was determined to be defective.

The present invention has been made to solve such a problem in the prior art, the stopper is rotated without using a separate drive means for determining the position of the metal tray and at the same time the positioned metal tray is directly below the test block The purpose of the clamping and conveying unit is to hold the metal tray to be transported to automatically release the stopper of the stopper to accurately align the metal tray directly under the test block.

According to an aspect of the present invention for achieving the above object, the transfer of the metal tray which is installed at the metal tray inlet side of the test site to be transferred in the initial state to determine the position of the metal tray being heated and drawn in the heating chamber. When the clamp is controlled and the metal tray controlled to be transported to the test block is clamped, the transport control unit cancels the control of the metal tray, and the metal tray controlled to be transported by the transport control unit is clamped directly below the test block. After positioning by conveying and releasing the clamping of the metal tray, and the clamping and conveying portion exiting to the outside of the test block, and the metal tray release means for releasing the locking state of the metal tray as the clamping and conveying portion is transferred to the transfer control unit Metal trays in the test site An apparatus is provided.

Hereinafter, the present invention will be described in more detail with reference to FIGS. 1 to 6 of the accompanying drawings showing an embodiment.

1 is a cross-sectional view of a test site showing the present invention, the present invention is a transfer control unit for controlling the transfer of the metal tray (3) introduced from the inside of the test site (2) in the heating chamber (1), transfer control Clamping and conveying unit for clamping the metal tray to be transferred directly below the test block (not shown), and release the metal tray for releasing the jam state of the controlled metal tray as the clamping and conveying unit is transferred to the transfer control unit It consists of three main parts, the means.

4 is a perspective view illustrating a transfer control unit of a metal tray, FIG. 5 is an operating state diagram of FIG. 4, and FIG. 6 is a plan view of FIG. 5, and the configuration thereof is as follows.

A pair of guide rails 5a and 5b are provided on one side of the inlet 4 formed at the test site 2, and the support block 6 is fixed to the guide rails 5b positioned in the middle of the guide rails. The support block has a pair of stoppers 7 are elastically installed with a spring 9 so as to be rotatable about a pin 8 so that the stoppers are both sides of the guide rails 5b in a state where no external force is applied to the stopper. Exposed to the top.

The stopper 7 has a locking groove 7a which is formed to coincide with the upper surface of the guide rail 5b. As the stopper is exposed to the upper portion, the metal tray 3 is introduced through the inlet 4 while the stopper is exposed upward. The tip of the metal tray is caught in the locking groove 7a of the stopper 7 to stop the transfer.

The pivoting piece 10 is fixed as shown in FIG. 5 so as to be exposed downward to an intermediate portion of the pin 8 which serves as the axis of the stopper 7. As the pivoting piece is rotated, the stopper 7 has a pin ( It is rotated around 8).

Fixing pieces 11 are fixed to both sides of the lower side of the guide rails 5a and 5b in order to rotate the pivoting piece 10, and the guide pins 12 are movably fitted to each of the fixing pieces. At both ends of the mill plate 13 is fixed, the operating piece 14 for rotating the rotating piece 10 is fixed to the middle portion of the plate.

The working piece 14 is formed with a recessed groove 14a in which the rotating piece 10 is positioned in a state where no external force is applied to the mill plate 13 so that the recessed groove 14a is rotated by the movement of the operating piece 10. As the rotation piece 10 is pushed to one side by the side of the operating piece 14 as the deviation from the ()), the stopper 7 is rotated about the pin (8).

When the bearing 15 is coupled to the pivoting piece 10 positioned in the recessed groove 14a, the frictional resistance generated when the pivoting piece 10 is rotated by the operation piece 14 is reduced, so that the operation is smoothly performed. do.

The inclined surfaces 13a and 13b to which the metal tray releasing means is connected are formed on the one of the plates 13 fixed to both ends of the guide pin 12.

The guide pin 12 is fitted with a coil spring 16, which is an elastic member that reduces the stopper 7 to an initial state when the external force is removed from the mill plate 13.

The transfer control part is located between the support block 6 and the rotating piece 10 because the bearing 15 fixed to the rotating piece 10 is positioned in the recessed groove 14a in a state where no external force is applied to the mill plate 13. By the elastic force of the fixed spring 9, the stopper 7 is exposed to the upper portion of the guide rail 5b as shown in FIG. 5 (a) to control the transfer of the metal tray 3, and by the metal tray release means. When the plate 13 is pushed to one side (the supporting block side), the bearing 15 is rotated from the recessed groove 14a of the operating piece 14 to rotate the pivoting piece 10, so that the stopper 7 is shown in FIG. As shown in b), the guide rail 5b is rotated downward to release the locking state of the metal tray.

2 is a perspective view showing a part of the clamping and conveying part of the metal tray, and FIG. 3 is a longitudinal cross-sectional view of the operating state of FIG. 2, and the structure thereof is as follows.

A lead screw 18 which rotates in accordance with the operation of the step motor 17 in the conveying direction of the metal tray 3 of the test site 2 is installed, and a cam shaft rotated by the driving of the cylinder 19 on the upper part of the lead screw. 20 is provided. The step motor 17 and the cylinder 19 are installed outside the test site because the temperature inside the test site 2 is high.

The lead screw 18 is coupled to the transfer block 21 which is horizontally moved in accordance with the rotation of the lead screw by screwing, and the rail of the test site 2 located on the opposite side of the lead screw on the other side of the transfer block ( A roller 23 is installed to move along 22).

The transfer block 21 is coupled to the slider 24 to move in the direction opposite to the transfer direction of the transfer block, the lower portion of the slider is integrally formed with a moving piece 25 for clamping both sides of the metal tray (3) It is.

The pair of sliders 24 are configured to interlock by a link. For this purpose, an intermediate link 26 is rotatably installed in the middle of the transfer block 21 and a connection between the intermediate link and the slider 24 is performed. Link 27 is connected to pin 28.

In addition, the coil spring 29, which is an elastic member, is fixed between the pair of sliders 24, and in the state where no external force is applied to the slider, the moving piece 25 formed at the lower portion of the slider is applied to the elastic force of the coil spring 29. It is retracted inward, and on the contrary, when the slider 24 on one side is pulled out, the sliders on both sides are simultaneously opened to the outside by each link.

At this time, in order to form the clamping force in one embodiment of the present invention used two coil springs (29).

The clamping of the metal tray 3 may be performed by using the moving pieces 25 formed on the slider 24. However, in one embodiment of the present invention, both sides of the moving pieces 25 are further provided to further improve the clamping force. By fixing the finger 30 so as to be exposed to the inside so that the finger is inserted into the hook groove (3a) formed on the side of the metal tray, the metal tray is to be transferred together in accordance with the transfer of the transfer block 21.

And the extension piece 24a is integrally formed in the slider 24 of one side (the side with a camshaft) among the sliders 24 in order to clamp or unclamp the metal tray 3 using the moving piece 25, Rotating block 31 to which the extension piece is coupled is coupled to the camshaft 20 so as to be movable horizontally and rotationally.

The slider 24 is fitted to the transport block 21 to be stably moved in a direction opposite to the moving direction of the transport block. To this end, the dovetail groove 32 is formed in the transport block 21. The slider 24 is formed to form a dovetail 33 fitted into the dovetail groove.

And as the lead screw 18 is rotated, the rotating block 31 is guided horizontally and at least one cut surface of the cam shaft 20 for rotating the rotating block 31 in accordance with the driving of the cylinder 19. 20a is formed and a bearing 34 connected to the cutting surface is coupled to the rotating block 31 so that the bearing 34 is connected to the cutting surface 20a when the rotating block 31 is horizontally moved. Guide the horizontal movement.

At this time, the bushing 35 connected to the outer circumferential surface of the camshaft 20 is fixed to the pivot block 31 so that the bearing 34 is connected to the cut surface 20a through the lifespan formed in the bushing. The frictional resistance decreases during horizontal movement.

In addition, the insertion groove 31a and the locking groove 31b are formed at right angles to the lower portion of the rotation block 31 to allow the extension piece 24a to pass through the insertion groove 31a, and at the end of the extension piece. The bearing 36 fitted in the locking groove 31a is fixed by the pin 37.

Referring to the operation and effects of the present invention configured as described above are as follows.

First, when the heating element 1 (not shown) which is mounted on the metal tray 3 in the heating chamber 1 is heated at a constant temperature, the inlet 4 of the test site 2 is closed to check the performance of the device. The shutter (not shown) was opened.

In this state, when the transfer in the heating chamber 1 supplies the two metal trays 3 to the test site 2 at the same time, the tip of the conveyed metal tray 3 is exposed to the upper part of the guide rail 5b. Since the engaging groove 7a of the stopper 7 is stopped, the transfer of the metal tray is controlled.

As described above, the stopper 7 is exposed to the upper portion of the guide rail 7a in a state in which the close plate 13 is opened to the outside by the elastic force of the coil spring 16.

In this state, the camshaft 20 is rotated in the clockwise direction as shown in FIG. 3 (b) by the driving of the cylinder 19, so that the rotation block 31 fitted to the camshaft is also rotated with the camshaft. Done.

Accordingly, since the rotation block pulls the extension piece 24a of the slider 24 coupled to the lower portion of the rotation block 31, the intermediate link 26 coupled to the transfer block 21 with the pin 38, and the As the link link 27 connected to the slider 24 and the intermediate link 26 is extended, the slider 24 installed opposite to the transfer block 21 is moved outward.

According to the operation as described above, the moving piece 25 formed at the lower portion of the slider 24 opens outward while tensioning the coil spring 29, wherein the slider 24 is formed on the feed block 21 by the dovetail 33. ) And the dovetail groove 32 are coupled to each other and thus are stably moved.

As such, when the step motor 17 installed on the outside of the test site 2 in the state where the movable pieces 25 are open to both sides is operated to rotate the lead screw 18, the transfer block 21 coupled to the lead screw is rotated. It is conveyed to the right side of FIG. 1 on the conveyance control part side.

When the transfer block 21 is transferred to the right side in the drawing, the rotation block 31 is fitted into the locking groove 31b so that the bearing 36 fixed to the extension piece 24a is fitted into the rotation block 31. Is moved horizontally along 20).

In this operation, since the bearing 34 provided with the rotation block 31 is moved to the cutting surface 20a of the cam shaft 20 in a connected state, the rotation block 31 is horizontally rotated without being rotated by the cam shaft 20. Is moved.

When the tip of the pusher 39 fixed to one side of the transfer block 21 is connected to the inclined surface 13a formed on one side plate 13 by the continuous transfer of the transfer block 21, the coil spring 16 The pushing plate 13 pushed out by the elastic force is pushed by the tip of the pusher and starts to move inward.

When the plate 13 is moved to the inner side of the guide rail (5a) as described above, the operating piece 14 fixed to the middle portion of the plate 13 is also moved with the plate and is fixed to the end of the rotating piece (10) The bearing 15 located in the recessed groove 14a of the operating piece 14 is pushed by the side of the operating piece 14.

Accordingly, as shown in (a) of FIG. 5, the pivoting piece 10 held vertically by the elastic force of the spring 9 is rotated counterclockwise around the pin 8, so that the stopper 7 fixed to the pin 7 is fixed. ) Is rotated below the guide rail (5b) to maintain the state as shown in (b) of FIG.

That is, since the locking state of the metal tray 3 is released, the metal tray can be transferred to the test block side.

As described above, when the camshaft 20 is rotated counterclockwise as shown in (b) of FIG. 3 by the operation of the cylinder 19 which has rotated the camshaft 20 in a state where the stopper 7 is released. Since the rotation block 31 tilted on the camshaft is also rotated counterclockwise, the pair of sliders 24 which are opened outward while tensioning the coil spring 29 are retracted inward.

Accordingly, the moving piece 25 formed at the bottom of the slider 24 is retracted inward, so that the finger 30 fixed to be exposed to the inside of the moving piece has a metal tray 3 formed at the side thereof, and the recessed groove 3a is formed at the side. It is inserted into the clamping metal tray (3).

At this time, the pair of moving pieces 25 are interlocked by the intermediate link 26 and the connection link 27.

According to the operation described above, after the metal tray 3 is released by the stopper 7 and the movable piece 25 clamps the metal tray 3, the step motor 17 is reversed as described above. Since the lead screw 18 is reversely rotated by the driving of the feed screw 21, the transfer block 21 coupled to the lead screw by screwing is transferred to the test block side.

In this manner, when the transfer block 21 is transferred by the rotation of the lead screw 18, the pusher 39 is pushed by the pusher 39 so that the stopper 7 is rotated under the guide rail 5b. (3) transfer becomes possible.

When the pusher 39 is connected to the inclined surface 13b of the mill plate by the movement of the transfer block 21 and then exits from the mill plate, the stopper 7 is to be exposed to the upper portion of the guide rail 5b by the restoring force of the spring 9. However, since the metal tray 3 to be transported is positioned above the stopper, the stopper 7 is not pressed by the weight of the metal tray and is not exposed to the upper portion of the guide rail 5b.

Then, when the metal tray 3 is removed from the stopper 7, the stopper is exposed to the upper portion of the guide rail 5b by the restoring force of the spring 9 and then waits to control the transfer of the metal tray to be transferred next. Of course, the plate 13 is also moved to the outside by the restoring force of the coil spring 16 to maintain the standby state.

When the metal tray 3 is transferred and positioned directly below the test block due to the continuous rotation of the lead screw 18, the driving of the step motor 17 is stopped, so that the metal tray 3 is exactly aligned with the test block. .

After aligning the metal tray 3 to the test block as described above, the clamping of the metal tray 3 that the finger 30 is clamping should be released.

The operation of unclamping the clamped metal tray 3 is made possible by rotating the camshaft 20 by the cylinder 19, and thus the detailed description thereof will be omitted.

After releasing the clamping of the metal tray 3 by the operation as described above, the step motor 17 is operated again to transfer the transfer block 21 to the safety zone S where interference does not occur when the device is tested. Keep it.

In this state, when the lifting plate 40 is raised by driving the lifting motor (not shown) as shown in FIG. 1 to raise the metal tray 3 positioned directly below the test block, the device mounted on the metal tray. Since the lead of is connected to the test pin of the test block, the performance of each device is checked, and the result is written to the CPU.

After the performance test of the device mounted on the metal tray 3 is performed in the above-described operation, the lifting plate 40 is positioned at the bottom dead center by the driving of the lifting motor, and the inlet 41 of the test site 2 is Since it is open, a separate transfer (not shown) causes the metal tray 3 in the test site 2 to be drawn out.

What has been described so far is the description of one cycle in which two metal trays 3 heated at a constant temperature in the heating chamber 1 are transferred to the inside of the test site for testing, and then drawn out to the outside of the test site. It is to be understood that such an operation may be repeatedly performed while the device is operating normally.

As described above, the present invention controls the transfer of the metal tray introduced from the heating chamber without using an expensive cylinder, and at the same time, when the finger of the clamping and the conveying unit is transferred to the metal tray side to clamp the side of the metal tray, it is in a locked state. Is automatically released and then clamped to be transported directly below the test block, which greatly improves the durability of the device.

Claims (13)

Of the metal tray 3 installed at the metal tray 3 inlet 4 side of the test site 2 and transferred in the initial state to determine the position of the metal tray heated and drawn in the heating chamber 1. When controlling the conveyance and clamping the conveyance-controlled metal tray to the test block, the conveyance control part for releasing the control of the metal tray and the metal tray controlled by the conveyance control part are clamped directly under the test block. The metal tray releasing means for releasing the clamping of the metal tray, releasing the clamping of the metal tray, releasing the clamping and conveying portion exiting the outside of the test block, and releasing the jamming state of the metal tray as the clamping and conveying portion is transferred to the feed control unit. Metal tray feeder in the test site, including. According to claim 1, wherein the feed control unit is fixed to the support block (6) fixed to the guide rail (5b) located in the middle and the spring (9) to be rotatable around the pin (8) on the support block In a state in which no external force is applied, a pair of stoppers 7 exposed to both upper portions of the guide rails 5b, and the rotation piece 10 fixed downwardly exposed to the middle portion of the pin 8 to which the stoppers are fixed. And inclined surface (13a) (13b) is fixed to one end of the guide pin (12) fitted to the fixing piece (11) fixed to the lower portion of the guide rail (5a) (5b) and at the same time the metal tray release means is connected to one side The formed plate 13 and the elastic member which is installed between the plate and the fixing piece so that the metal tray release means is connected to the inclined surface of the plate in the state that the external force is not applied to the plate, and pushes the plate outward; Fixed to the middle part of 13) and In this non-actuated state, it consists of an operating piece 14 having a recessed groove 14a in which the rotating piece 10 is located, and the metal tray releasing means pushes the plate 13 toward the guide rail side, thereby actuating the moving piece 14. Metal tray feed device in the test site configured to rotate the rotating piece 10 so that the stopper (7) is rotated below the guide rail (5b). 3. The metal tray in the test site according to claim 2, wherein the bearing (15) is fixed to the rotating piece (10) located in the recessed groove (14a) of the operating piece (14) so that the bearing is connected to the recessed groove. Conveying device. 3. The metal tray conveying apparatus in a test site according to claim 2, wherein the coil spring is fitted to the guide pin (12) using an elastic member that pushes the plate (13) outwards to the coil spring (16). The heating chamber (1) according to any one of claims 2 to 4, wherein a locking groove (7a) corresponding to the guide rail surface is formed on the stopper (7) exposed to the upper portion of the guide rail (5b). Metal tray conveying apparatus in the test site in which the metal tray (3) drawn in the) is caught and the conveying is controlled. The lead screw (18) according to claim 1, wherein the clamping and conveying portion is installed in the longitudinal direction within the metal tray (3) transfer section of the test site (2) and rotates by driving of the step motor (17). Cam shaft 20 installed upward and rotated by driving of cylinder 19, and coupled to the lead screw by screwing, guided by rail 22 provided on the opposite side of the lead screw in accordance with the drive of the step motor to reciprocate horizontally A pair of sliders 24 integrally formed with a moving transfer block 21 and a moving piece 25 installed on both sides of the transfer block and moving in a direction opposite to the transfer direction of the transfer block to clamp both sides of the metal tray. And an intermediate link 26 rotatably installed in the middle of the transfer block 21 so that the pair of sliders interlock with each other, and a connecting link 27 connected between the intermediate link and the moving piece, and one of the sliders. The rotation block 31 for moving the moving pieces formed on the slider to the outside while the horizontal extension as well as the horizontal movement along the cam axis are coupled to the extension piece 24a extending from the slider, and the pulling force by the rotation block 31 Metal tray feeder in a test site composed of an elastic member for moving the slider of each other inward as it is released. The dovetail 33 is formed in the transfer block 21, and the dovetail groove 32 is formed in the slider 24 so that the slider 24 moves horizontally stably in the transfer block 21. A metal tray conveying apparatus in a test site, wherein the dovetail is guided and moved to the dovetail groove. The method according to claim 6, wherein the fingers 30, into which the recessed grooves 3a formed on the side surfaces of the metal tray 3 are fitted, are positioned at both ends of each moving piece 25 so that the fingers are exposed to the inside of the moving piece. Metal tray feeder in the test site. 7. The metal tray conveying apparatus of claim 6, wherein the elastic member comprises at least one coil spring (29) fixed between the sliders (24). The rotation block 31 according to claim 6, wherein at least one cutting surface 20a is formed on the outer circumferential surface of the camshaft 20, and the bearing block connected to the cutting surface is coupled to the rotation block 31 that is inserted into the camshaft. A metal tray conveying apparatus in a test site in which a bearing (34) coupled to a rotation block (31) is moved in a camshaft direction in a state of being connected to a cut surface (20a) during the conveyance of (21). The method according to claim 10, wherein the bushing 35 is fixed to the outer circumferential surface of the camshaft 20 in the rotation block 31 so that the bearing 34 is connected to the cut surface 20a through the lifespan formed in the bushing. Metal tray feeder in the test site. 12. The slider according to any one of claims 6, 10, and 11, wherein the insertion groove 31a and the locking groove 31b are formed orthogonally to the lower portion of the rotation block 31 to slide the slider through the insertion groove 31a. A metal tray conveying apparatus in a test site in which an extension piece (24a) of (24) is passed and a bearing (36) fitted in a locking groove (31b) is fixed to the end of the extension piece by a pin (37). The metal tray conveying device in a test site according to claim 6, wherein the metal tray releasing means fixes the pusher (39) connected to the inclined surfaces (13a) and (13b) of the mill (13) to one side of the conveying block (21). Device.