SU1348113A1 - Electric magnetic drive of machine for butt resistance welding - Google Patents

Abstract

This invention relates to welding, in particular to an electromagnetic drive for resistance butt welding. The purpose of the invention is to simplify the control of the electromagnetic drive of the machine for butt welding, reducing the labor costs for routine maintenance and repair. The actuator includes a housing, a magnetic core, a measles with a guide bushing, a rod, and a return spring. To achieve the goal, a cap with an adjustable inlet and a check valve is installed at the end of the guide bush. A radial groove is made at the end of the core, and a groove, adjustable by a flap, is formed on the guide sleeve. The distance between the nearest edges of the groove and the groove is equal to the amount of movement of the core during the melting process. The optimum reflow rate can be selected by adjusting the flow area of the hole in the collar and changing the supply voltage in the drive winding circuit. The rate of draft is controlled by a damper. To regulate the amount of movement of the core when reflowing, the groove on the sleeve may be made oblique, and the measles may have a device for fixing its angular position. The drive has a simple system for controlling the rate of melting and precipitation, and is easily rebuilt for a different mode of operation. 1 hp f-ly, 2 ill. (L with 4; 00

Description

1P

This invention relates to resistance butt welding devices.

The purpose of the invention is the simplification of up. electromagnetic drive and reduced labor costs for routine maintenance and repair.

Fig. 1 shows a schematic diagram of an magnetized maggie drive for resistance butt welding with a system for controlling the speed of melting and precipitation speed; figure 2 - view And figure 1.

The electromagnetic actuator consists of a body-magnetic circuit 1, a winding 2, a core 3 with a guide sleeve 4, a rod 5 and a return spring 6. At the end of the guide sleeve 4 there is a cover 7 in which a hole 8 is plugged with a 9-section adjustable with a screw, and a check valve 10 is mounted, with the help of which air is quickly expelled during the return} of the 1st stroke of the core and, therefore, bystry returning it to its original position. On the side surface of the guide sleeve 4, the inclination of groove 1 1 is complete and flap 12 is installed, and a radial groove 13 is made on the bark 3. The distance between the edge of the groove 11 and groove 13 is UH equal to the displacement of the core 3 when heated. The anchor 3 can be installed in different angular positions with a nut 14, having grooves, and a guide rod 15 mounted on the body-magnetic core 1, which allows adjusting the value D of the movement of the core 3 when reflowing. Two autotransformers (current regulators) 16 and 17 are installed in the power supply circuit of the winding 2 of the electromagnet. With one, the current in the power supply circuit of the winding 2 is set during the melting process, with the help of the other - during the settlement. Switching from one power mode to another axis is performed using a mechanical draft sensor (limit switch).

An electromagnetic butt-drive butt welding machine works as follows.

Pre-rod 5 is rigidly connected to the movable sponge for the part to be welded (not shown). The parts to be welded to a hundred} ia are poured onto the lips with minim. about 1 mm gap

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A calibrated plate can be used for the installation. Parts are clamped in jaws. The welder turns on the welding voltage and applies a voltage pulse to the power winding of the electromagnet by briefly closing the contacts in the circuit of the autotransformer 16. Anchor 3 moves to the left until the ends of the parts are closed, and when the power supply is extended, the spring 6 moves to the right. This causes the arc to fire. The contacts in front of the autotransformer 16 are closed for the entire reflow period. Anchor 3 begins to slowly move blindly. Measles 3 are affected by an electromagnetic force directed to the left by a spring force directed to the right, and the force resulting from the dilution resulting in the cavity formed by the cover 7, the end of the core 3 and the guide 4 is also directed to the right. Moreover, the latter depends on the speed of movement of the core 3 and about the cross section of the inlet opening 8. By adjusting the opening cross section of the opening 8 with the screw 9 and changing the supply voltage in the winding circuit 2 of the electromagnet, it is possible to choose the optimal reflow rate. When moving the core 3 by the value of l, a displacement sensor (not shown) is triggered. The winding 2 switches to the power mode via the autotransformer 17, and the current in the winding increases by a factor of 3-5. The force of an electromagnet increases dramatically. Upon further movement of the core 3, the cavity formed by the end of the core 3 and the cover 7, the atmosphere through the groove 13 and the groove 11, occurs. The force arising from the vacuum becomes equal to O, since the pressure from both ends of the core 3 is the same. Sediment occurs at a rate 5-10 times higher than the speed of movement during the reflow process. The speed during the draft is also regulated with the help of the damper 12 and the autotransformer 17. If it is necessary to measure not the displacement D, during reflowing, the measles 3 is turned at a fixed angle defined by the slots on the nut 14. When turning the core 3 clockwise (look from butt) f increases.

The proposed electromagnetic drive has a simple system for controlling the rate of reflow and sludge, which is 13

It is easy to re-stratify into different modes of operation. The system contains only a current regulator in the power supply circuit of an electromagnet, an adjustable hole in the valve and an adjustable damper mounted near the groove, however, it allows to get almost any movement speed during the melting and slump. The simplicity of the design makes it possible to reduce labor costs for routine maintenance and repair, as it can be serviced directly by the welder without the help of an electrician.

Claims (2)

Claims 1. Electromagnetic drive, butt welding machines, comprising a magnetic casing, a winding, a measles with a guide bushing, a rod connected with a clamping device for a part to be welded, and a return spring characterized in that. 13 that, in order to simplify the control of the electromagnetic drive and reduce the labor costs for the current maintenance and repair, the sleeve is equipped with a tongue with an adjustable air inlet hole: l installed on its end face and a slot provided with an adjustable damper, while on the end face radial groove made. 2. Electromagnetic actuator according to claim 1, characterized in that, in order to expand the technological capabilities by providing adjustment of the amount of movement of the core crf, the groove on the sleeve is made on 1LB, and the bore is provided with a device for fixing the angular position, made in the form of a nut with grooves mounted on the stem and guide rod fixed on the body of the magnetic core with the ability to interact with the grooves of the nut. 2 6 Phie.1 In id Editor A. Ogar Compiled by I. Felitsin Tehred A. Kravchuk Order 5149/12 Circulation 969 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 Fi9. Proofreader M. Pojo