SU565338A1 - Semiconductor instruments classifier - Google Patents

Description

one

The invention relates to radioelectronisation of industry and can be used in the manufacture of semiconductor devices, mainly unpackaged, for automatic measurement of electrical parameters, classification, followed by separation of measured instruments.

Known claushers of louvodopodnikov devices containing a measuring device, a clock device for connecting the device to the measuring device, a logic device processing the results of intentions and through a memory device that sends a signal to the unfolding of devices in the container 1.

These snap-in classifiers are designed to measure semiconductor devices in a housing with hard leads and do not allow measuring and classifying devices in a packageless design, in particular, with a sticky coating (crystal covered with casing).

Semiconductor devices, structurally made in a packageless design, have the following features: the instrument leads have a small, relatively large length, a large ratio of length to diameter, do not allow for a large tensile force, do not allow for a large contact pressure (Rlop 20 g / output),

have an adhesive crystal coating and are made without a TV.

The above listed aso: the capabilities of unpackaged instruments do not misunderstand the transport and unloading of instruments in bulk and lead to the fact that when measuring electrical jiaipaiMeTipOB and 1classification, followed by unloading the instruments, the exact location of the instrument leads is not ensured.

in the Contact Device, the exclusion of the device sticking to the pickup device, which makes it difficult to | Unload the devices, but the temperature of the transitions when applying the limiting measurement modes, and hence

values of measured parameters.

The closest in technical essence to the claimed is device 2, which CO | Holds the measuring device, the memory unit, the coordinate table, the contact device for connecting the device to the measuring device, including the battery cartridge, the pressing grip with the pressure ring. to; nta | Ktnuyu head with contacts and device, the device layout of the measured devices in transport cassettes, the mechanism for moving transport cassettes, turning off the carriage, actuator, electromagnets and software sensor, unlocking device zki.

The disadvantages of this device are as follows:

 V iV

nek performance;

fixing the devices on the cassette to the wax causes the wax to enter the outputs during (measurement time, which worsens the conditions of the electrical contact, and waxing raises the temperature of the measured instruments;

The inepeeoc of instruments prior to measurement from the cassette to the measuring device is an additional operation;

The device is unsuitable for use with devices of low weight and adhesive coating of the crystal, as the devices adhere to the suction naked clothes, and the prawn under the action of its own weight and compressed air is difficult;

Classification of devices was carried out in the "reject-suitable" mode, and therefore the device does not allow separate apportioning of devices in the presence of more than two groups - the Significant one;

The selected cassette and the method of fixing the device by the UNION are not allowed in the cassette to carry out any technological processing of the instruments.

The object of the invention is to increase the reliability and performance of the classifier, simplifying its design.

This is achieved by the fact that in the proposed classifier each slot of the cassette of the co-actuating device is made with a hole connected to the guide grooves that terminate with O2V openings (and for the passage of the .KOHTaiKTOB contact head to the clamp-grip, IB which is A self-compensating compensator and a spring-loaded ejector with a through hole, the contact head (connected with an unsupervidable stop during the measurement of the device, and the clamping grip on the cradle on the pick-up carriage and moving to the transport to the cassettes, on the carriage of the movement mechanism of which electromagnets are attached, connected to the power supply unit, the chatter drive is connected to a programmable sensor, whose outputs are connected to the memory unit and the drive.

The mutual arrangement of elements of the transport mechanism of the transport, namely, the location on the carriage of an electric motor, connection of a pipe to the power supply unit, connection of the cable drive to the program sensor and connection: 1Output the outputs of the MPMiHoro sensor to the memory and drive to allow the drive and the drive to perform. measured instruments in transport cassettes, and the transport cassettes move during the return of the device, pickup to the initial position, and measure the next instrument.

The classifier’s increased productivity is also achieved by the location of the KOHTaiKTiHoro device, namely by placing it 1 non-locally but near the place of unloading of devices, and the frost table at the time of measurement moves under

565338

a plate with transport cassettes with an outlet from under it after measuring the last device in the cassette, which makes it possible to shorten the displacement path when unloading the devices ъ transport cassettes.

FIG. Figure 1 shows the proposed Mo .ro classifier for semiconductor devices; in fig. 2 -. Clamp-capture, cut; in fig. 3 — odantakt head, slit;

“And FIG. 4 - contact device | 0 during measurement, section; in fig. 5 is a section along A-A in FIG. 4, B1 is a cassette socket.

The semiconductor classifier contains a coordinate table 1, system 2 controls the movement of the coordinate table, cassette 3, plate 4, rakladyuy device 5, system 6 y; oracle device pickup, clamp-grip 7, contact

head 8, control system vpl "water1M 9 coitactic head, spring 10, adjusting stop M, lever 12, cam 13, shaft 14, measuring device 15, memory 16, vacuum device 17, pieemoteroi 18, carriage 19, drive 20 carriages, Trolram sensor 21, electromagnets 22, transport cartridges 23, magazine 24, cassette sensors 25, cassette mechanics 26 with carriages 27, holders 28.

On the carriage 29 of the pickup device 5 in the guide. Sleeve 30, the clamp 7, which includes the housing 31, has a stop 32, is inserted. In the boring of the Kopinyca 31 is inserted a mesh disk 33, under which there is

clamping ring 34, lock (captive nut 35 and inart 36.

Holes in the housing 31 are made according to the number and position of the conclusions of the semiconductor device, which

connected to the connector 37. The resetter 38 is held by the gun 39 on the stop 32. Support 40. spring com: with the pen 41 1P1 is pressed to the flap 42. Springs 43, equally spaced around the circumference, hold: Uyut.dub-suv1vat 7 in the upper position, contacts 44 the contact holoika 8 is located under the force-calibrated springs 45 in the housing 46 and connected to the measuring device 15.

The sockets of the cassette 3 have holes "a and guiding slots" b.

Classifier | works as follows.

The cassette 3 with the loaded devices is installed on the coordinate table 1. The power supply of the class indicator is switched on. The control system. The drive 9 of the contact head 8. Leads and it-X1vat 7, moving

it parallel to the Z axis of the coordinate system to the cassette 3 (.fig. 4), creating a constant force 1 on the cassette 3 with a spring compensator 41, and a contact head (ku 8 - to the terminals of the semiconductor device located in

cassette 3.

The pins 44 pass through the aviosoi ot1ve) of the cassette 3 and lift the schuibor along the Guides naBaiM "b" and push it you: water to the clamping ring 34 with the force of tarirovtsg spring springs 45.

The contact head 8 of the paddles is through the lever 12 from the cam 13 and is kept spring 10 at the time of the MEARRHING and on the idimensional movement and the mechanical connection between the contact head of the contact head 8 and its right-hand side. Then the measuring device stumbles 16. The measurement results of the parameters, namely, the classification of the half-right device, are recorded in memory 16. The signals from the 15 measuring device 17, which holds the device behind the crystal, are received. and ivyvkdy on the prizhayvapati 7, and on the control system of the actuator 9. the contact head 8, .kotor will squeeze the clamp-grip 7 and the contact head to the original position. At this time, from the unit 16, there is a callback corresponding to the current instrument cluster and 22, the measles of which enters the transport port 23. At the same time, the classification signal 16 is sent to the control system 6 of the pickup device.

Upon returning to the initial position of the co-head 8, the control system, by means of the actuator 9, sends a signal to the control system 2 (by the drive of the coordinate table, which brings the next device to the measuring position. Coordinate angle is displaced parallel to the X-axis and Y-axis in the XY with constant stepper. Step non-displacement of the coordinate table is carried out by the system. The control with the stepped electric motor.

At the same time, a signal is sent to the drive control system 6 of the pickup device 5, which moves the layout device from the half-way 1; the bottom 1 meter to the place of loading. The raklamaki device moves with a stepper motor and operates along (Paths. After stopping the pickup device 5 from the drive control system 6, signals are received to the vacuum device (in 17 and on the lid 18, the air is turned off, the compressed air is connected to the fitting 37 hold-down 7. Compressed air presses on the finger of the diverter 38, the spring 39 is compressed, the diverter 38 moves the visa, presses the instrument, and through the vent hole 38 the compressed air presses on the instrument. As a result, mechanical and singing | matte air The action is discharged into the slot of the transport cassette 23, after which the compressed air supply is turned off.

One time is supplied a sitnal on the 31st of the pick-up device to the initial position and the actuator 20 of the carriage 19, which moves the transport cassette 23 to the schag

What from the program sensor 21 the signal arrives and the reset of the information chip in the block to us is 16.

The armature of the electromagnet 22 is disengaged from the traporpio by the cassette 23, and the carriage 19 1foo.reverts to the initial position determined by the signal of the program sensor 21. After moving the coordinate plate 1 and returning the pickup device 5 to the initial position from the axis control system 2 and the drive control system 6 of the pickup device 5. post the signals to the drive control system 9 of the contact head 8,

which performs the functions of start-up sial. Cycling is repeated.

At the end of the run, the cassette 28 of the transport cassette 23, the cassette sensor 25 and the memory block 16 give signals to the cassette mechanism 26, which lowers the carriage 27 with the clip 2-8, freeing up space for the next transport cassette 23.

Claims (2)

1. US Patent L 3601699, cl. 324-158Г, publ. il97il 2. Patent of England No. 1325016, cl. HIK, publish. 1973. 42 .2 eleven fi -A H ten