SU1762431A1 - Device for loading articles - Google Patents

Abstract

Use: manufacture of semiconductor devices. The goal is to enhance operational capabilities. SUMMARY OF THE INVENTION: Cassettes 5,6 are cylindrical and mounted to be rotatable about their axis. The movement mechanism is made in the form of a carriage 17 with a stopper 40 and pneumatic means for fixing the cassettes 5,6. The drive for reciprocating movement of the carriage is made in the form of a traction motor 26, and the mechanisms of rotation of the cassettes 5,6 are placed on the carriage 17 and each of them is also made in the form of a stepper motor 35 and a disk 38 with a spring-loaded latch 19 and an anvil 39 placed with the possibility of interaction with the stopper 40 of the carriage 17. 8 Il.

Description

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The invention relates to the manufacture of semiconductor devices and can be used in the process of assembling integrated circuit housings for loading the bases of the enclosures into cylindrical cassettes.

Known machines are cassette, carrying out oriented packing of parts in the slots of a flat technological cassette. However, in the manufacture of integrated circuit (IC) enclosures, before the operation of electroplating of the enclosure, in accordance with the technological process, the enclosures are loaded into cylindrical cassettes with sockets on their surface. Currently, this operation is performed manually, which significantly reduces the performance of the assembly.

A machine-oriented cassette is known, comprising a technical vision system, a piecewise dispensing mechanism, an orientation device, a case loading device for cassettes, control and secondary power supply units, a loading / unloading manipulator. The machine performs loading of flat cassegs.

For the prototype of a prin- ciple (automatic) cassette installation containing a frame and located on it. combined in the course of technological operations, mechanisms of single-issue, an orientation device with a block of grippers, a movement mechanism with receiving cassettes.

In addition to the oriented loading of the bases into plenary cassettes, the known automaton unloads the bases from the packaging or technological packaging, for this purpose serves as a drive and handler with a group electromagnetic capture,

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which supplies the base to the piece-by-piece mechanism.

The known device (automatic) loads only flat cassettes.

The aim of the invention is the expansion of operational capabilities.

This goal is achieved by that in the known cassette installation, containing a frame and located on it, combined in the course of the technological operations, the piece delivery mechanism, the orientation device with the gripper unit, the transfer mechanism with the receiving cassettes.

According to the invention, the moving mechanism comprises a carriage with coaxially fixed cassettes, each of which is kinematically connected to a drive, which communicates the cassette with discrete rotation with a reverse at the end of a predetermined angle of rotation, and the carriage is installed with the possibility of reciprocating discrete movement in a given area.

The design of the mechanism for moving and rotating the cassettes allows the empty slot of the cylindrical cassette to the loading position to be fed at a certain interval.

Figure 1 shows a general view of a cassette installation; Fig. 2 shows a kinematic scheme for moving and rotating the cassettes; Fig. 3 shows the layout of the cassettes at the initial positions during linear movement; Fig. 4 is a schematic of the arrangement of the cassettes at the initial positions at an angular rotation; figure 5 - cassette with mandrel in section; figure 6 - the base in the slot of the cassette (type A); 7 - the base of the integrated circuit (cassette product) - front view; on Fig - the base of the case (section aa).

The cassette installation comprises a frame 1 on which a piece-delivery mechanism 2 is placed, an orientation device with a block of grippers 3, a movement and rotation mechanism 4 (FIG. 1) with cylindrical cassettes 5.6 (FIG. 2.3) (hereinafter cassettes). In addition, there is a control unit 7 and a control unit 8 (Fig. 1).

The mechanism of piece-wrench 2 contains a bowl with magnets under it, driven by an electric motor, a tray / installed between the poles of an electromagnet, driven by an electromagnetic vibrator. The base tray of the IC housing (Fig. 7.8) is fed to the initial position, equipped with a photosensor.

The orientation mechanism is a technological line consisting of 7 working positions 9, 15 (Fig. 1) served by a block of grippers 3 moving according to the principle of a manipulator. Each of the grips is an electromagnet with a photosensor controlling the presence of the base. Position 16 (Fig. 4) is a slot of a cassette 5 or 6.

0 The movement and rotation mechanism 4 (Fig. 2) comprises a carriage 17c coaxially mounted with its cassettes 5,6, a linear movement actuator of the carriage 17, two cassette rotation actuators 5 and b. performed 5 identical. Each cassette is fixed by a pneumatic fixing unit 18, rigidly mounted on the carriage 17, and clamps 19, each of which is mounted on a respective rotational drive.

0 In addition, the clips 19 are also the driving links of the cassettes. When the tapes are fixed, email is turned on. a chain of drive for moving the block of grippers 3, having in its composition an engine 20 and

5 coupling 21 (figure 1).

Each cassette is fixed together with a cylindrical mandrel 22 (Fig. 5) made of a non-magnetic material. Permanent magnets 23 are fixed on the mandrel 22, so that any 2 adjacent magnets are directed by opposite poles to the cylindrical surface of the mandrel. Inside the cassette, the mandrel is placed in such a way that the magnets 23 are strictly

5 under cassette slots. This is achieved by aligning the pin 24 located on the mandrel with the technological opening of the cassette. A system of single magnets located under the cylindrical nests

0 cassettes, contributes to a more accurate centering of the bases of the enclosures when laying them in the slots and holds them when the cassette is rotated by some other kind of forced fastening. On the cylindrical surface of the cassette, along the generatrix has a technological protrusion 25, necessary for further technological operations and violating the uniformity of the arrangement of the sockets of the cassette along

0 circle.

The linear movement drive of the carriage 17 consists of a stepper motor 26 (FIG. 2), giving it a reciprocating movement through the sleeve 27 and

5 screw gear 28. The initial (final) positions of the carriage are monitored by photosensors 29.30 using flag 31. On the carriage there are flags 32.33 with petals in the number of nests along the generator of the cylindrical surface of the cassette

interacting with the photosensor 34. The carriage moves in ball guides.

The drive rotation of the cassettes 5 and 6 are installed on the carriage 17. Each of them contains (figure 2 shows the numbering of the elements of one of the drives) stepper motor 35, which transmits the reverse movement through the clutch 36 and the gearbox, 37 disk 38, rigidly sitting on the gearbox shaft 37, On the disk 38, a spring-loaded retainer 19 and an anvil 39, interacting with the stopper 40 mounted on the carriage, are fastened. When the stop 39 is aligned with the stopper 40, the cassette fixed relative to the disc 38 is in the initial position. A petal disk 41 fixed to the disk 38, interacting with the photosensor 42, is mounted on the gearbox 37 shaft and the flag 43 is strengthened, which interacts with the photosensor 44, 45 controlling the end positions of the cassette in rotation angle.

The cassette installation works as follows.

The bases of the IC cases are loaded into the bowl of the piece-by-piece delivery mechanism 2, where they, sectioning, are oriented along the conclusions (the direction of the leads is perpendicular to the direction of movement of the bases in the tray) and arrive at the initial position, from where they are picked up by the grippers unit 3 and transferred to position 9-16 . The presence of the part in the initial position is controlled by the photo sensor, on the signal of which the electromagnetic clutch 21 of the drive of the gripper unit 3 is activated.

The further operation of the installation is described from the moment when the foundation is already at each position 9-15.

After the electromagnet is turned on, the clutch 21 of the gripper block 3 moves from its initial central position to the leftmost position, goes down, the grippers electromagnets turn on, the base grips to itself, the gripper block 3 with the bases rises up and moves to the right. In the process of its movement, each of the 8 photosensors of the block of grippers is monitored, monitoring the presence of bases on the grippers electromagnets. If there is no base on one of them, the electromagnetic clutch 21 of the installation 21 is disconnected and the block of grippers 3 is stopped. In the extreme right position, the block of grippers is lowered down, the electromagnets of the grippers are turned off, leaving the base moved 1 position to the right.

At position 9, the position of the base on the bottom is analyzed and, if it is in the wrong position, a command is given to position 10, at which the directional oriented base turns in a vertical plane through 180 °. At position 11, the bases are rotated by 90 ° in the horizontal plane after the base output is rotated perpendicular to the linear direction of the cassettes. At positions 12–15, the bases are centered by tightening the size of the centering nest. The block of grippers that is centered and oriented to the bottom and to the terminals of the base moves to position 16, which is the slot of the cassette.

After loading the first slot of the cassette 5, when the gripper unit 3 moves to the right 0, the cassette rotary drive motor 35 turns on to the left, ensuring that the next slot is fed to position 16, while the next blade of the disc 41 falls into the slot of the photo sensor 42, which gives 5 a signal to turn off the engine 35 , if the petal, for any reason, did not get into the slot of the photosensor, the clutch 21 is disconnected.

After loading the last nest of the first row along the circumference, the flag 43 interacts with one of the photosensors 44 or 45 (depending on the direction of rotation), which gives a signal to turn off the rotational drive motor 35 and turn on the 5th carriage 17 linear motion motor 5. shutting down the engine 35 for some reason did not happen, the block 38, having performed the specified rotation angle with the cassette, interacts with its stop 39 with the stopper 40 and stops the rotation of the cassette.

After a linear movement of 1 pitch, the next tab of the flag 33 falls into the slot of the photo sensor 34, which instructs the engine 26 to stop, the base is loaded into the first slot of the second row, and when the gripper unit 3 moves from right to left, the engine 35 starts to turn on with a reverse in the opposite direction, again informing the cassette of discrete rotation until the end of filling of the 2nd row, then again linear movement of the carriage by 1 step, and so on. The cycle is repeated until the end of filling all 5 slots of the 1st cassette.

If for some reason the cassette did not turn or the carriage did not move 1 step, that is, the corresponding sensors 42 or 35 would not be blacked out with the discs of disk 41 or the checkbox 33. when the gripper unit 3 moves from left to right, the coupling 21 is disconnected at the moment when the block of captures reaches its initial position (upper average).

After filling the first cassette 5, i.e. the discrete movement of the carriage is completed at a predetermined section, the stepper motor 26 turns off the sensor 34 and the electromagnetic clutch 21 of the drive of the gripper unit, the engine 26 starts to operate in an accelerated mode, the output of the cartridge b is in its initial position (see fig. 3). The initial position of the cassette is controlled by the photo sensor 30 (the flag 31 enters the slot of the photo sensor 30).

The photosensor 34 is turned on, and the electromagnetic clutch 21 of the drive of the gripper unit. The described cartridge filling cycle is repeated. At this time, the operator removes the first filled cassette and inserts an empty one instead.

Claims (1)

The proposed installation of the cassette allowed to increase the productivity of the loading process of cylindrical cassettes by automating it by 2-2.3 times, freeing 40-46 workers employed in this operation, as well as increasing the yield percentage due to the correct orientation of the bases during loading. Apparatus of the invention for loading articles, mainly bases of integrated circuit packages, into cassettes containing a frame and mechanisms of piece delivery, orientation with a block of grippers, movement mechanism, characterized in that, in order to expand operational capabilities, cassettes cylindrical and mounted with the possibility of rotation about its axis; the movement mechanism is made in the form of a carriage mounted in ball guides with pneumatic Mathematically means for fixing the cassettes, the drive of the reciprocating movement of the carriage is made in the form of a stepper motor connected by means of a coupling with a screw gear, the mechanisms of rotation of the cassettes are placed on the carriage, and each of them is made in the form of a stepper motor and a disk with a spring-loaded lock, connected by means of a coupling and a gearbox, and the disc is rigidly connected to the shaft of the gearbox and the cassette. f3 VZ GFR X Lini t / cxofaffu / 70E (/ ЈЈ / {/  23 22 ,four And FIG. 7 ffvfA FIG. b Aa FIG. eight