SU1473928A1 - Tongs for resistance spot welding - Google Patents

Abstract

The invention relates to welding and can be used in the development of equipment for resistance spot welding of flat and bulk reinforcing cages of reinforced concrete structures. The purpose of the invention is the expansion of technological capabilities and the reduction of physical effort acting on the operator. Under the action of the working fluid, the piston 2, through the spring 9, acts on the slider 11 and moves it in the housing. At the same time, the double-arm lever with the electrode 18 is in the tilted position inserted between the rods being welded. After touching the stop, the 21 two-arm lever turns around the axis of the hinges 12, and the electrode 18 is brought under the welding point. Upon further movement of the piston 2, the rod 3 acts on the spring-loaded rod 7. The rods are clamped, followed by welding. After welding, the pressure in the cylinder cavity is relieved. Under the action of the springs, the two shoulders of the lever of the electrode 8, the slide 11 of the piston 2, return to their initial positions. 4 il.

Description

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The invention relates to welding and can be used in the development of equipment for resistance spot welding of flat and bulk reinforcing cages of reinforced concrete structures.

The purpose of the invention is the expansion of technological capabilities and reduction of physical effort expended by the operator.

FIG. Figure 1 shows pliers for resistance spot welding, the initial position of a more rigid spring 9, the slider 11 moves in the housing and compresses the spring 10, and the double-arm lever with the electrode 18 is folded in its folded position into the welded frame. casc The second shoulder of the two shoulders lever relates to the adjustable stop 21.

After the stop 21 touches the continuous movement of the slider 11, the two-arm lever rotates around the axis of the hinges 12, the electrode 18 is brought under the welding point and

; in fig. 2 - the same, the moment when the end of the Y slider 11 stops, the translational movement of the lever, once-With the further movement of the piston 2

rez; in fig. 3 - the same, the moment when the lever is turned under the point of welding; Fig 4 - the same, the moment of welding.

Pliers for resistance spot welding 5 comprise a housing 1, which is an elongated ram cylinder with a piston 2 and a rod 3. In the housing is fixed a cup 4, in which a spring-loaded spring 7 is placed in the insulating sleeve 5

the rod 3 presses the spring-loaded rod 7 and the spring 6 is compressed and the rods are welded.

After welding, the pressure in the cylinder cavity is released and the springs 6 and 9 begin to open, moving the rod 7 and the piston 2 to the initial position. After the rod 7 is stopped, the spring 10 starts

..rjlv expands and moves the slider 11 in the stationary electrode 8. In the housing 1 between the 20-way position, with the slider 11 placed in the initial springs 9 and 10, the slider 11 moving through the axis of the hinge 12 two passes through the movement of the slider 11 expanding and turning the double-arm lever arm, and through the combined spacing at a fixed angle, thereby twisting the electrode 18 from the welding point in the slider 11 and the axis of the hinge 12. The rod 3 moves further. The spring 9 has much less movement of the piston 2 and the slider 11, greater rigidity than the spring 10. In the initial position, the grooves 13 are made under the action of the valve to move in the spring 10, while the electrode 18 these axes of the hinges 12 and the limitations of its travel are derived from the frame to be welded. On at the end, as well as a groove 14 for moving the limiter 15 of the turn, made in the form of a bracket fixed on the slide 11. 30 One arm of the two-armed lever is made

this cycle ends.

The proposed mite design for resistance spot welding allows the use of two carrier plates 16 with a fixed welding of reinforcing cages with an electrode holder between them, significantly smaller cell sizes 17 with electrodes 18. Between the limiter and the known ones. In addition, with a 15 turn and a second lever arm, the loads on the operator in the form of a clamp 19 are significantly reduced, the spring is placed during the welding process. 20. An adjustable stop 21 is attached to the housing 1, in contact with the second lever arm at the end of the translational movement of the lever.

Electrode holders 17 and 22 are connected 40 comprising a housing with an abutment, a compression drive. Invention formula Pliers for resistance spot welding,

current leads 23 and cooling system hoses with a transformer 24 mounted on housing 1.

Ticks work as follows.

In the initial position under the action .. „, .. g„ „,,„ „,, .., ..,

springs 9 and 10, the piston 2 is retracted to the extreme in order to expand the technological displacement to the bottom of the ram, capabilities and reduce physical effort, the rod 7 with the electrode holder 22 and the electrode 8 attached to it is drawn into the housing 1, the slider 11 with the axis of the hinges 12 two, made in the form of a power cylinder with a piston and a rod, an input device in the electrode welding zone, including a two-arm lever, at the end of which one of two electrodes is mounted, characterized in that

spent by the operator, they are equipped with mounted on the rod with the possibility of axial movement and spring loaded with

the shoulder lever is balanced between the springs of both sides by a slider rigidly connected by us 9 and 10, while under the action of the spring a two-armed lever with electrodes 18 fixed on it is folded back from the case at a fixed angle and held by the turn stop 15.

Electrode 8 is supplied to the welding point, and 55 a rod rigidly connected with the second electric fluid is supplied to the cylinder by means of a piston, and the double-arm lever by means of a hinge moves the piston 2 to the side, the axis of which is perpendicular to welding points. At the same time, under the pressure of the axis of the power cylinder rod and the slider retracted by a slider, a two-arm lever rotation limiter mounted movably inside the body with the possibility of periodic interaction with the end of the power cylinder rod with a spring-loaded additional

a stiffer spring 9, the slider 11 moves in the housing and compresses the spring 10, and the double-arm lever with the electrode 18 in the tilted position is inserted into the welded frame. casc The second shoulder of the two shoulders lever relates to the adjustable stop 21.

After the stop 21 touches the continuous movement of the slider 11, the two-arm lever rotates around the axis of the hinges 12, the electrode 18 is brought under the welding point and

the slider 11 stops, upon further movement of the piston 2

The starting position, when this moment of movement of the slider is unfolded and turning the stem to a fixed position, the electrode 18 from which the piston moves to its initial position by the spring 10, is removed from the welded

this cycle ends.

The proposed mite design for tactile spot welding makes it possible to weld reinforcing cages with considerably smaller cell sizes compared to the known ones. In addition, the load on the operator is substantially reduced during the welding process.

Enclosures with an emphasis, the drive szha Formula of the invention pliers for resistance spot welding,

.. „, .. g„ „,,„ „,, .., ..,

in order to expand technological capabilities and reduce physical effort,

ti, made in the form of a ram with a piston and a rod, an input device in the electrode welding zone, including a two-arm lever, at the end of which one of two electrodes is mounted, characterized in that

in order to expand technological capabilities and reduce physical effort,

spent by the operator, they are equipped with mounted on the rod with the possibility of axial movement and spring loaded with

both sides with a slider rigidly connected

both sides with a slider rigidly connected

a rod rigidly connected with the second electrode, and a double-arm lever by means of a hinge, whose axis is perpendicular to the axis of the power cylinder rod and crossed with a slider by the rotation limiter of the double-arm lever mounted interchangeably inside the body with a possibility of periodic interaction with the end of the power rod cylinder spring loaded additional

1473928

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cuts it, mounted with the possibility of a periodic interaction with the gate on the slider, while the free stop and spring-loaded relative to the limb of the two shoulders is made with the possibility of turning.

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Claims (1)

Claim Pincers for resistance spot welding, comprising a body with an abutment, a compression drive made in the form of a power cylinder with a piston and a rod, an input device to the electrode welding zone, including a two-arm lever, at the end of which one of two electrodes is mounted, characterized in that, with the purpose of expanding technological capabilities and reducing physical effort spent by the operator, they are equipped with a slider mounted on the rod with the possibility of axial movement and spring-loaded on both sides, rigidly connected to the limit slider a two-arm lever turning body mounted movably inside the housing with the possibility of periodic interaction with the end face of the ram cylinder with a spring-loaded additional rod rigidly connected to the second electrode, and the two-arm arm by means of a hinge, the axis of which is perpendicular to the axis of the ram cylinder and cross-cuts it, mounted with the possibility rotation on the slider, while the free end of the two shoulders of the lever is made with the possibility of periodic interaction with the emphasis and the spring is relative but a turn limiter. FIG. 1 Fig.Z