SU1491796A1 - Automatic device for transferring cargoes - Google Patents

Abstract

The invention relates to a transport technique and allows to increase the reliability of cargo handling when working with ferromagnetic loads of complex configuration. The magnetic load (G) is captured by permanent magnets (M) 2 and transported to the dumping site by cranks 11 and 12 connected to a reversing drive. At a given point, the pusher 17, by rotating the axis 13 inside the body 1 of the gripping body, removes M by means of the movable platform 4 and two tons of 3 from G. The magnetic field M is closed in the sleeves 7, and G drops out of the gripping device. The slider returns to its original position. 4 il.

Description

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FIG. one

The invention relates to a lifting machinery industry, in particular, to devices for the automatic feeding of sheet magnetically-guided water blanks of complex shape, for example, plates of magnetic circuits (stators and rotors) of electrical machines made of electrical steel, permallo, permendum and other magnetic conductors. materials.

The purpose of the invention is to improve the reliability of the transfer of goods when working with ferromagnetic cargo 15 complex configuration.

Figure 1 shows the automatic transfer of goods, section; figure 2 - section aa in figure 1; FIG. 3 is a section BB in FIG. 1 (the execution of the magnetic mechanism and the arrangement of its parts at the moment of seizing and holding the cargo); figure 4 - the same, the mutual arrangement of parts at the time of discharge of the load.

The automatic cargo transferor contains a gripping body, under the body 1 of which magnets 2 are placed, rigidly mounted on the arms 3, connected to platform 4 with the possibility of longitudinal movement in its

grooves, which is mounted on guides 5 and pressed by springs 6 to the base of case 1. Magnets 2 are inside enclosing magnet 5 conductor sleeves 7, which have cylindrical spreads in the lower part equal in depth to half the length of magnets 2. The outer surface of the sleeves 7 is screwed with non-flux bushings 8, which are kept from being screwed by lock nuts 9. The sleeves 7 are mounted on the body 1 of the gripping body with the ability to move in its 45 longitudinal grooves and secured with nuts 10. on two cranks 11 and 12 with parallel axes 13-16. On axis 13, a pusher 17, which is angularly adjustable from the clamp, is mounted, which interacts with a pin 18, rigidly mounted on the vertical wall of the platform 4, having a T-shaped profile in longitudinal section. A reversing drive of the gripping body, consisting of a worm gearbox 19, an electric motor 20, connected to each other by means of a friction clutch 21, is connected to the 15-g axis. 24. A bushing 23 is connected to a switch 25. On axis 15, cams 26 and 27 are installed, acting respectively on electric switches 28 and 29. Switches 25 and 28 control the direction of rotation of the electric motor 20. Switch 29 on determines the initial position of the transferor.

Perekladchik works as follows.

In the initial position, cranks 11 and 12 are in a vertical position. The cam 27 acts on the electric switch 29. The sleeve 23 is retracted by means of the spring 24 all the way to the left (as shown in Fig. 2) and keeps the electric switch 25 pressed. The switches 25 and 28 are in positions that allow the motor 20 to rotate in the direction of movement cradles in the area of capture blanks. The mutual arrangement of the details of the magnetic mechanism corresponds to the image of FIG. 3, i.e. platform 4 is lowered by springs 6 directly onto the base of the body 1 of the gripping body. Magnets 2 are in the lowest position. In this case, the lower parts of the magnets 2, equal to half of their length, are located in cylindrical bores made in sleeves 7 and do not have direct contact with the core body of the sleeves, i.e. the lower ends of the magnets 2 are in an air ring gap having high resistance to the passage of the magnetic flux. Thus, a magnetic system is formed, in which one pole is magnet 2 itself — its lower part located in the bore, and the other pole is the lower part of magnetic conductors 7. Magnetic lines of force exit into the air space mainly from the end surfaces of the magnets 2 and enter the end surfaces of the sleeves 7, i.e. In the air space around the end surfaces of the magnets 2 and the sleeves 7 there are magnetic fields.

Upon receiving the Start signal, the electric motor 20 begins to rotate.

The gripping body follows the arc of a circle to the stack of sheet blanks and presses them with the end surfaces of the sleeves 8, slightly protruding above the end surfaces of the magnets 2 and the sleeves 7. The magnetic flux passes through the magnetic conductive body of the workpiece and it sticks to the end surfaces of the sleeves 8 .

With this, the gripping body and the worm gear of the gearbox 19 are stopped, and the output shaft of the electric motor 20 continues to rotate. The screw to 22, screwing into the tooth of the stopped worm gear, moves the sleeve 23 in the axial direction to the right (Fig. 2), which causes the switch 25 to operate, and the output shaft of the electric motor 20 begins to rotate in the opposite direction. In order to prevent the mechanism from jamming at the moment that the switch 25 triggers, a friction slip clutch 21 is provided in the design of the slider.

The gripping body, holding the workpiece, begins to move along the arc of a circle to the place of discharge of the workpiece. The sleeve -23 returns to its original position by means of a spring 24 and an axial force of a screw 22. During the operation of the transfer unit, the axes 13 and 14 are synchronously turned in the body of the gripping member. At the same time, the pusher 17, which is connected with the "SUE 13", presses the pin 18 at a given moment and raises the platform 4 along the guides 5, compressing the spring 6. At the same time, in the bores of the sleeves 7, the magnets 2 are lifted up by means of platform 4. The magnets 2 turn out to be covered by the magnetic surfaces of the sleeves 7 over their entire cylindrical surface. The magnetic fluxes generated by the magnets 2 are closed inside the sleeves 7, practically not going out. In this case, the magnets 2 are raised by an amount slightly exceeding half of their length, removing the residual magnetization of the material of the sleeves 7. The magnitude of the displacement of the magnets 2 is chosen experimentally. Through the workpiece no longer pass magnetic fluxes and it falls away from the end surfaces of the sleeves 8.

At this moment, the cam 26 presses the button of the switch 28. The motor shaft 20 begins to rotate in the opposite direction and the gripping body returns to its original position without a billet, which is fixed by the cam 27 and the switch 29. Next, the part transfer cycle is repeated 0.

To prevent the transferor from being caught by the magnetic field at the same time, more than one billet was screwed onto the sleeves 7

5 bushings 8. The size of screwing them from the sleeve 7 determines the magnitude of the magnetic flux closing through the workpiece, and consequently, the strength of the attraction of the workpiece to the ends of the sleeve 8,

By varying the distance from the end surfaces of the sleeves 8 to the end surfaces of the magnets 2 and the sleeves 7, the transferor captures one blank from the bag. The protrusion of the end surfaces of the sleeves 8 over the end surfaces of the sleeves 7 also contributes to a more reliable discharge of blanks in a given

0 place.

In order to grip workpieces having different overall dimensions, magnets 2 with sleeves 7

have the ability to move by

54

deputy base of body 1

organ and platform 4. Their location on the body 1 of the gripping organ is fixed by nuts 10,

Claims (1)

Invention Formula An automatic load transfer device containing two curved rods, one ends of which are connected to a reversing drive for moving them, and a gripping body with a hollow body and a pusher for resetting products mounted on the axes of the second ends of the cranks, characterized in that with ferromagnetic goods complex configuration, grooves are made in the base of the housing, and the transferor is provided with sleeves fixed in the housing grooves made of a non-magnetic material with internal bores in their lower part and with fixed on them non-conductive material bushings, the ends of which are located below the ends of the sleeves, while the gripping body additionally includes permanent magnets movably mounted in the lower part of the sleeves and made with a height equal to two heights of the groove and FZH A platform with a vertical wall in the lower part of the body cavity is spring-loaded relative to its base and connected by means of permanent magnets with a vertical wall in which grooves are made for the axes of the cranks and a stop is fixed to interact with the pusher. and   J i am Fm.ch