SU1309080A1 - Method and apparatus for filling stencil with ferrite cores - Google Patents

Abstract

The invention relates to computing technology, in particular, to technological equipment for manufacturing storage matrices on ferrite cores. The aim of the invention is to improve the quality of filling the stencil with ferrite cores and the reliability of the device, which implements the described method. The goal is achieved by the fact that before lowering the ferrite cores into the stencil opening, a low-frequency oscillatory motion of the ferrite cores around their vertical axis is excited in the 0.2-0.5 kHz range. The device implementing the method comprises a base 1 on which vibrators 2 are mounted with a pneumatic chamber 3 fixed on them and a stencil 5 mounted on its surface, in which holes 6 are made to fit the ferrite cores 7. A frame 8 with tensioned wires is located above the stencil 9, on which ferrite cores 7 are strung. The frame is rigidly connected with the mechanism 11 of its vertical movement through the holder 10. The pneumatic chamber 3 is connected to a vacuum pump 13. At the level of the tensioned wires, gear magnets 14 and 15 are installed on opposite sides, each of which is connected to vibrators 16 and 17. The vibrators are powered from the power supply unit 18, and one of the vibrators is connected through a phase inverter . 2 sec. f-ly, 3 ill. S w 00 o so o o o o o

Description

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The invention relates to computing technology, in particular, to technological equipment for the manufacture of storage arrays on ring ferrite cores.

The purpose of the invention is to improve the quality of the stencil filling method with ferrite cores and the reliability of the device, implementing the proposed method.

FIG. 1-3 shows a device that implements a method of filling stencils with ferrite cores.

The device contains vibrators 2 located on the base 1, on which a pneumatic chamber 3 is fixed, made with through air ducts 4, a stencil 5 located on its surface, in which holes 6 are made for planting ferrite cores 7. A frame 8 with tensioned wires 9 is located on top of the stencil , on which ferrite cores 7 are strung. The frame is rigidly connected with the mechanism 11 of its vertical movement through the holder 10. Pneumatic camera 3 through pipe 12 is connected to a vacuum pump 13.

The distribution, orientation and rotational movement of the ferrite cores 7 is provided by means of frame 8 installed on opposite sides at the tensioned wires 9 of the toothed electromagnets 14 and 15, each of which is connected to a separate additional vibrator 16 and 17. The vibrators 2, 16 and 17 are powered from the power supply 18, and one of the additional vibrators, for example 16, is connected to the power supply 18 through the phase inverter 19. The control windings of the electromagnets 14 and 15 are interconnected and connected to a separate output m power unit 18.

The method is carried out as follows.

The filling of the proposed method begins with the stringing of ferrite cores 7 onto wire 9. By repeatedly dipping the front end of this wire into a container with a large number of ferrite cores, they are strung on this wire. Then, a certain number of wires with strung ferrite cores are pulled over ram 8 and placed above stencil 5 so that the field of ferrite cores is parallel to the stencil plane, the ferrite cores are located at an insignificant distance from it, and the wire with ferrite cores is above corresponding to the row of mounting holes 6 of the stencil. After creating an alternating magnetic field, the lines of magnetic forces of which act parallel to the plane of the cores and at an angle of 45 ° to the tensioned wires, the ferrite cores are magnetized, thus separating them from each other, and spread over each corresponding stencil fitting hole. If a

fermenting cores, when magnetized, are distributed over equal distances from each other (on each wire), by choosing the length of the wire, the number of ferrite cores and the magnitude of the magnetic field strength, create conditions for

the distribution of each ferrite core over the corresponding stencil hole.

Since the ferrite cores are magnetized using a magnetic 5-liter, operating at an angle of 45 ° to the tensioned wires, the ferrite cores simultaneously with the distribution rotate on the wires at the same angle. At the same time, ferrite cores coincide in orientation with the mounting holes 0 of the stencil.

Then, ferrite cores hanging on the wires are oscillated. For this purpose, low-frequency transverse oscillatory movement of the magnetic force lines (Fig. 1) in the range of 0.2-0.5 kHz is provided, which means that the ferrite and the resulting cores are subjected to rotary oscillatory movement.

With the occurrence of rotary vibrations, the magnitude of which is 10-50 microns,

0 begin to land ferrite cores. Landing is carried out by exciting vertical stencil vibrations with simultaneous vacuum suction of ferrite cores into the mounting holes.

5 Due to the fact that ferrite cores are oriented at the same angle as the holes, and as they make swiveling vibrations, the landing occurs with

Q least energy loss without noticeable jams on the edges of the mounting holes. This reduces the strength of friction, improves the conditions for the entry of the ferrite core into the mounting hole, more than ba;

5 arises from vacuum suction, since the air jets during the pivotal oscillation of the core entering the mounting hole are balanced more equally on both sides of the ferrite core. Due to the distribution of ferrite cores, one above each bore hole, conditions are created to control the vibrating plank of each core. A device that implements the stencil filling method works as follows.

Stringing of ferrite cores 7 on the coordinate wires 9 Is carried out in any way, using appropriately

mechanism or manually. Then the wires 9 are pulled on the frame 8, which is mounted in the holder 10 of the vertical movement mechanism 11 and is positioned so that the cores are approximately 1-1.5 mm above the stencil 5. The number of ferrite cores on the tensioned wire is equal to the number of holes 6 of one p Yes, on the stencil 5. Then, power supply 18 is supplied to the windings of electromagnets 14 and 15. Since the pole pieces of electromagnets 14 and 15 are jagged, the magnetic field created by them is not uniform, the power signal is variable tric signal frequency. 50 Hz. Consequently, the alternating magnetic field created by the electromagnets 14 and 15 magnetizes the ferrite cores 7, which are distributed from each other at equal distances. Selection of the design parameters of the frame 8, the stencil 5, the number of holes in it and the number of ferrite cores 7 ensures that they are placed above the mounting holes 6.

After distributing the ferrite cores 7, a power signal is supplied to the additional vibrators 16 and 17, however, to one of them, Example 16, the signal is fed through the phase inverter 19. This ensures the antiphase operation of the additional vibrators 16 and 17, as a result of which the electromagnets 15 and 14 make antiphase oscillatory motion. If the field strung on the wires of ferrite cores 7 is in the area of magnetic force lines, and these lines, due to the angular position of the electromagnets 14 and 15, are directed at an angle of 45 ° to the tensioned wires 9, the ferrite cores also move at an angle of 45 ° in the vertical position around its vertical axis. The greater the amplitude of the vibratory movement of electromagnets, the greater the bias of the magnetic lines and the greater the scope of the new oscillations of the ferrite cores. In practical implementation, the amplitude of the vibratory movement of electromagnets is 10–15 µm, which, with the constructional coordination of the dimensions of the devices, a guarantees the angular rotation of the ferrite cores to 5–10.

After the rotational oscillations of the ferrite cores 7 are excited, the vacuum pump 13 is turned on, a vacuum is formed in the PUMO 3 through the channels 4 connected to the mounting holes 6, vacuum suction is formed, which begins to act on the oscillating and oscillating ferrite cores 7 Above the holes 6. At the same time, the power is supplied to the vibrators 2, which result in a high-frequency vertical oscillatory movement of the pneumocamera 3 with a stencil 5 fixed to it. By rotating the drive pulley m The vertical displacement mechanism 11 of the frame 8 with the wires 9 and the ferrite cores 7 is lowered. In this case, the ferrite cores 7 enter into the mounting holes 6 of the stencil 5 and are located in them.

After the stencil is filled, the power of all the receivers is disconnected, the wires 9 are freed from the frame 8, the nest is moved upwards by means of the mechanism 11, and then removed from the holder 10. The ferrite cores 7 with the wires 9, which are the first coordinate wires, remain in the stencil 5, which it is removed from the surface of the pneumatic chamber 3 and is used to prop the second and third coordinate wires. To improve

reliability of fixing the ferrite cores 7 in the mounting holes 6, known means are used, for example, adhesive tape, covering a stencil 1a 5 on its lower side.

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Claims (2)

1. The method of breaking the stencil with ferrite cores, including stringing ferrite cores on the coordinate wires, pulling the wires over the stencil holes, turning the cores at an angle of 45, lowering the ferrite cores strung on the wires, and filling the stencil holes that differ in m. that, with the aim of improving the quality of filling, prior to lowering the ferrite cores, they are created with an oscillatory motion about their vertical axis with a frequency of 0.2–0.5 kHz and E excite high-frequency vertical bands. Lebani stencil with simultaneous vacuum suction of ferrite cores in its hole. 2. A device for filling a stencil with ferrite hearts. Containing a pneumatic.mear located on the vibrators, made with through channels, a stencil attached to it, a frame with tensioned wires, rigidly secured with a mechanism of vertical change, ec.chro.magnet , pnevmonopump and power supply unit, characterized in that, in order to improve the quality of filling and reliability of the device, two additional vibrators, a phase inverter and a second electromagnet are introduced, one of which additional vibrators connected to the power supply directly. and the other through a phase inverter, and the electromagnets are mounted on opposite sides of the frame in the plane of location ferrite cores so that the longitudinal axes of their jagged pole tips are directed at an angle of 45 ° to the tight wires, while each electromagnet is rigidly connected to a separate additional vibrator. to 8 9 75 15 sixteen FIG. 3 Compiled K). Kitty Editor N. RogulichTechred I. VeresKorrektor A. Zimokosov Order 1438/44 Circulation 590 Subscription VNIIPI USSR State Committee for Inventions and Discoveries 1 13035, Moscow, Zh-35, Raushsk nab., 4/5 Production-Printing Preprint, Uzhgorod, ul. Project, 4