SU1590275A1 - Machine for resistance welding of reinforcing cages - Google Patents

Abstract

The invention relates to mechanical engineering, in particular, to the creation of resistance welding machines and can be used in the construction industry for welding reinforcement cages made predominantly of low alloy steels. The purpose of the invention is the expansion of technological capabilities due to the provision in the process of supplying the longitudinal rods to the welding zone they are heated. The machine is equipped with two cylinders 13 with rods coaxially mounted on both sides of the longitudinal axis with the possibility of axial movement perpendicular to it. Electrically insulated contact jaws 17 and 18 are connected to cylinder 13. Electrically insulated jaws 23 are mounted on rods. Two pairs of electrically insulated contact rods 14 and 15 are electrically connected to corresponding contact jaws 17 and 18. Two pairs of electrically insulated, spring-loaded, connected to the polarity leads of a transformer are a conductor The contact rods 35 are mounted coaxially with the contact rods 14 and 15 with the ability to interact with them. The contact jaws 14 and 15 have the possibility of adjustment movement along the longitudinal axis of the machine. 1 hp ff, 3 ill.

Description

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Yen with the corresponding contact jaws 17 and 18, Two pairs of electric, insulated, spring-loaded, connected to the opposite-pole terminals of the transformer of conductive contact rods 35 are installed with 1590275

contact rods 14 and 15 with the ability to interact with them. The contact jaws 14 and 15 have the possibility of adjustment movement along the longitudinal axis of the machine. 1 3, pfl, 3 silt,

The invention relates to mechanical engineering, in particular to the creation of machines for resistance welding, and can be used in the construction industry in welding reinforcing cages made mainly of low alloyed steels. I The purpose of the invention is to expand the technological capabilities by providing heating of longitudinal I rods in the process of their submission to the seark zone.

I FIG. 1 shows a resistance welding machine; FIG. 2 is a view A of FIG. one; in fig. 3 - section BB on 1FIG. one .

I The machine contains a frame 1 with curved longitudinal guides 2 on it, on which mechanisms of simultaneous feeding of longitudinal and transverse rods are installed, and the drive of its movement. The mechanism for supplying the rods is made in the form of a carriage 3, and the drive for its movement is in the form of a power cylinder 4 with an operating mechanism and a piston thrust piston 1 1i „: The mechanism 5 connected to the rod -kom 6 thrust piston to change the stroke of the working piston depending on the position of the thrust piston. The thrust piston rod is connected to a rod 7 on which the limit switch 8 turns on the carriage return stroke and turns on the welding cycle and the limit switch 9 turns on the welding, transformers to heat the longitudinal rods, and the limit switch 10 is mounted on the frame; switch 9 is placed between the end. A stop 11 is installed on the carriage with the possibility of its interaction with switches. The carriage has two spring-loaded pushers (not shown) installed by the possibility of interaction with a feeder (not shown). Brackets 12 are attached to both sides of the carriage,

On which perpendicular to the longitudinal axis relative to the longitudinal axis, cylinders 13 are mounted coaxially with each other with the possibility of infrared movement, as well as contact rods 14 and 15,

electrically insulated from each other and from the brackets by insulators 1b. .

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Contact sponges 17 and 18 are mounted on the body of each cylinder with the possibility of adjusting their relative position along the longitudinal axis. The working surfaces of the jaws are parallel to the longitudinal axis; at THIS, the contact jaws are electrically insulated from each other and from the machine bed by insulators 19. The contact rods and contact jaws are interconnected by means of flexible conductive. tires 20 and 21. On the rods of the cylinders 13, two shoulders 22 are hingedly mounted, on which clamping sponges 23 are fixed electrically insulated from each other and from the machine bed. On the transverse guides.

0 (not shown) beds are installed carriages 24 and 25 sec. Welded transformers .26 fastened to them, roller supports 27, brackets 28 with compressors 29 compressing the upper and lower 5 electrodes 30 and 31, and on each carriage by means of angles 32 -; insulating housings 33 are fixed, - in the holes of which coaxially contact rods 14 and 15 are installed and the current-carrying rods 35, which are spring-loaded by springs 34, connected to various potential terminals of welding transformers 26 by flexible busbars 36 and 37, are mounted with springs 34, Conclusions transformers are also connected to the corresponding welding electrodes by flexible busbars 38 and 39.

The machine works as follows.

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In the initial position of the carriage 3 of the feed mechanism (the carriage occupies the leftmost position), the carriages 24 and 25 (the installation mechanism is not shown) are installed, depending on the distance between the longitudinal rods of the frame. Then, depending on the predetermined pitch of the position of the transverse rods, the mechanism 5 sets the stroke. the working piston of the cylinder 4 by means of its stop piston. In this case, the switches 8 and 9 with the help of the rod 7 are automatically set to the position corresponding to the specified step. Then put the longitudinal rods on roller bearings 27, and the transverse rods - in the feeder (not shown). When starting the machine, the working medium (for example, compressed air) enters the rod end of the cylinders 13, then into the cavity of the working rod of the cylinder 4. At the same time, the pressing jaws 23 press longitudinally. These rods to the contact jaws 17 and 18, after which the carriage 3 is moved right to the right by simultaneously feeding the longitudinal rods on roller bearings and the transverse rod from the feeder (not shown).

Upon further movement of the carriage 3, the contact rods 14 and 15 are pressed against the current-conducting spring-loaded rods .35. And, compressing the spring 34, continue to move to the welding position (to the extreme right position), with the stop. 11 presses the grounding rod, switch 9, including the transformers 26. As a result, the electric current flows. along the longitudinal rods in the area between the contacts of the jaws. 17 and 18, ensuring the heating of the longitudinal rods in this area during their supply to the welding zone. Upon further movement of the carriage 3 to the extreme right position, the stop 11 presses the rod of the limit switch 8, as a result of which a command is received to intake the working medium c. rodless cavities of cylinders 13 and the inclusion of a cycle-welding, as well as the supply of working medium into rodless cavity of cylinder 4, in this case, unclenching and retracting from longitudinal rods of clamping jaws 23 and contact sponges 17 and 18 occurs.

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electrodes 30 and. The longitudinal and transverse rods are welded to each other and the carriage 3 retracts. The stop 11 presses the rod of the limit switch 10, including the next cycle of the machine

Further, the machine cycle is repeated automatically.

The use of the invention allows to increase the production capacity of the reinforcing cages and to ensure the quality of welded joints.

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Claims (2)

1 .. A machine for contact welding of 20 reinforcement cages, containing a mechanism for simultaneous feeding of longitudinal and transverse rods installed in the longitudinal extension frames, made in the form of a carriage with 25 spring-loaded pushers, connected to the drive of its movement, set in a transverse direction two beds. co-welded transformers and electrodes with compression drives, a transverse rod feeder, as well as circuit breakers for the welding and carriage stroke, which, in order to expand the technology logical possibilities by providing heating of longitudinal rods in the process and feeding to the welding zone, the feed carriage is equipped with a clamping and heating of longitudinal rods made in the form of two cylinders with rods coaxially mounted, on both sides of the machine’s longitudinal axis perpendicular to it, electrically insulated contact jaws connected to each cylinder, the working surfaces of which are parallel to the longitudinal axis and connected to the double-arm rods with electric Two insulated clamping jaws, two pairs of electrically insulated from each other and from a carriage of contact rods, electrically connected with corresponding contact jaws, each carriage with a welding transformer is equipped with electrically insulated from each other and from the carriage spring-loaded, connected to different polarity leads transfor40 45 five Conductor contact rods mounted coaxially with contact rods with possible interaction with them, a machine . is additionally equipped with a trip plug for switching on the transformer located between the switches of the boil over cycle and the carriage stroke. 1590275. . . 2. Maigana on p. 1, .o t l. And h a-. So that, in order to ensure that the optimal heating mode is possible for the Longitudinal rods of different diameters, the contact jaws are installed with the possibility of moving along the longitudinal axis of the machine. . +1 - .P x- j // 27  fas.l Longitudinal. Transverse, rod rod "// / J ua.J / 29 28