SU913454A1 - Device for testing magnetic multi-aperture plates - Google Patents

Description

The invention relates to storage devices.

A device for controlling magnetic multihole plates is known, designed to control the impulse characteristics of ferrite plates and containing contact needles, needle holders, contact bath, column guides [1].

A disadvantage of this device is the effect of the level of the filler of the contact bath in the form of a conductive liquid or bulk material on the value of the transient resistance of the signal removal circuit and, as a trace. The accuracy of the measurement device.

The closest technical solution to this invention is a device for controlling magnetic multi-hole plates containing fixed on the base plate feeding unit to the measuring position, connected to the drive shaft by a crank mechanism, a measuring unit and a piercing unit, equipped with a fixing unit for plates in the form of a tunnel with guides a groove and with holes in its upper and lower walls connected to the movement lever,

measuring needles inserted into the holes of one of the tunnel walls, and contact groups connected to the '121 measurement unit.

This device is characterized by relatively fast wear of the end surfaces of the contact groups, the consequence of which is a decrease in the stability of transient resistances between the measuring needles and contact groups, which reduces the reliability of the device. To compensate for this wear, you must perform additional adjustments to the device, which increases operating costs. ₍

The purpose of the invention is to increase the reliability of the device. .

This goal is achieved by the fact that the device for controlling magnetic multi-hole plates containing fixed on the base of the drive shaft, the unit feed plates in the measuring position, made in the form of a rod, movably connected with a crank mechanism connected to the drive shaft, the unit for fixing plates , made in the form of a plate with a skeletal hole, in the walls of which are located

3

913454

four

additional holes, needle holder with measuring needles located in one of the additional holes of the board, and two groups of contacts, a carriage connected to the lever of one of the cam drive shaft mechanisms is inserted, the needle holder connected to the lever of another cam drive shaft mechanism is rigidly fixed to basis ·, the contacts of each group Yu are rigidly fixed on the carriage and are located in other additional holes of the board.

Figure 1 shows the kinematic diagram of the proposed device: figure 15 15 - the board with a needle holder and contacts.

The device contains a drive shaft 1, a cam mechanism 2, a carriage 3, a crank mechanism 4, a lever 20, a rod b, a needle holder 7, a cassette 8, a board made for example in the form of a tunnel 9, with a through-and-additional holes, measuring needles 10, lever 11, cam ^ mechanism 12, lever 13, two groups of contacts 14 connected with the measuring unit (not shown in figures 1 and 2). Tunnel 9 is rigidly fixed to base 15. 20

The device works as follows.

Shaft 1 sets in motion a cam mechanism 2, which is connected with a carriage 3 by means of a lever 13, on which grappas of contacts 14 ^ and a crank mechanism 4 are mounted, which sets in motion a roar! ^l 5 crank mechanism. The lever 5 moves the reciprocating rod b of the plate feeding unit to the measuring position from the cassette 8, in which the measured plates 16 are located. The measuring plate 16 is inserted into the tunnel with rod 9, while the measuring needles 10 released 45 by means of the lever 11, connected to the cam mechanism 12 with the shaft 1, under the action of gravity descend and pierce the openings of the measuring plate 16 and the tunnel 9. Simultaneously with this, the cam mechanism 2 with the help of levers 13 (only one cam is shown in FIG. 1 2 and lever 13), privo They are moved by the shaft 1, moving the groups of contacts 55 14, mounted on the carriage 3, along the guides in the side walls of the tunnel 9, until their end surfaces touch the surfaces of the measuring needles 10. In this position, the electromagnetic parameters of the cells of the plate 16 are measured. groups of contacts 14 with carriage 3 move before opening them with measuring needles 10.

The measuring needles 10 with the help of the lever 11 rise, releasing plate 16 in the tunnel 9, and the stem b delivers the next plate 16 to the measuring position from the cartridge 8, pushing the measured plate out of the tunnel 9. The latter is sent along the chute by a measuring unit to a “fit” or “reject ¹¹ container.

Technical and economic advantage of the proposed device is to increase the reliability of the device in the automatic mode of operation by reducing the wear of its end surfaces.

Claims (1)

Claim A device for controlling magnetically multi-hole plates containing a drive shaft fixed on the base, a plate feed unit to a measuring position made in the form of a rod movably connected to a crank-drive rod connected to a drive shaft, a plate fixing unit made in the form of boards with a through hole, in the walls of which there are additional holes, a needle holder with measuring needles located in one of the additional holes of the board, and two groups of contacts, different in those that, in order to improve the reliability of the device, it contains a carriage connected to the lever of one of the drive shaft cam mechanisms, the needle holder connected to the lever of another cam shaft drive mechanism, the board is rigidly fixed on the base, the contacts of each group are rigidly fixed on the carriage and are located in other additional holes of the board.