SU1348111A1 - Apparatus for automatic submerged-arc welding in overhead position - Google Patents

Description

The invention relates to equipment for submerged-arc welding in the overhead position and can be used in welding of annular and longitudinal welds.

The purpose of the invention is to expand the technological capabilities of the device by expanding the range of materials to be welded and increasing the quality of welding.

The drawing shows a device for automatic submerged-arc welding in the overhead position.

The device consists of a running gear 1 with a drive 2, on which a vertical support 3 with a carriage 4 is mounted. The latter is set in motion by a power drive 5. A bracket 8 is hinged on axis 7 with a flux bin 8 fixed with a cup 9 and a screw 10. First 11 and second 12 copier wheels are fixed on the side surface of the flux bin 8. Flux hopper B is also fixed on the flux feed drive 13, the welding head 14c by the coil 15 of the electrode wire and the die 16, through which the electrode 17 is fed.

On the cup 9, a shaping device 18 is fixed with the possibility of self-alignment. On the carriage 4 of the vertical caliper 3, an additional actuator 19 is fixed (for example, a hydraulic cylinder), which interacts with the flux bin 8 through the hinge 20.

The device works as follows.

At the start of welding, the actuator 5 is turned on, tuned to the welding of this product, which, by means of the carriage 4 of the vertical caliper 3, the bracket 6 and the axis 7, presses the forming device 18 to the welded joint until the second cam wheel 12 contacts the outer surface welded product 21.

Also adjusted

for welding this type of product. additional actuator 19,

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- 15 to 20 - 25

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45

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50

12

which, through the hinge 20, acts on the flux bin 8. The latter, by turning around the fastening axis 7, presses the first drift wheel 11 mounted on it to the outer surface of the product 21.

Then, the flux supply drive 13, drive 2 of the undercarriage 1 when welding longitudinal welds (when welding ring seams, instead of drive 2, includes a product rotator, which is not shown in the drawing), welding head 14 and the welding circuit. The product is being welded.

After welding, successive shutdowns of the actuators 19 and 5, the apparatus is retracted from the product.

The proposed device allows changing the pressing force of the forming device by changing the effect of the main actuator on the axis through which the flux bin is fixed and on which the point of suspension of the forming device, and the flux pressure in the cup is located, by changing the effect of the additional drive on the flux bin regardless of the clamping force forming device, which is set by the main power drive. The force of the additional power drive does not change the pressing force of the forming inclined platform, since it is connected to the flux bin by the axis of the hinge, around which the flux bunker is rotated when exposed to an additional power actuator.

In addition, the device makes it possible to stabilize predetermined absolute values of the flux pressure in the cup and the pressing force of the forming device and easily regulate them in a wide range, which creates the required conditions for keeping the liquid weld pool in the volume formed by the forming device and melted by the metal edges of the welded joint at welding of metal of the same and different thicknesses.

Editor A. Ogar Order 5149/12

Tehred A. Kravchuk

Circulation 969 VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Tehred A. Kravchuk

Circulation 969 of the USSR Military Committee

Claims (1)

DEVICE FOR AUTOMATIC. CEILING WELDING IN THE CEILING POSITION, containing an electrode feeding mechanism, a forming device, a flux feeding mechanism, a flux hopper with a cup fixed in it, two cam wheels, one of which is located on the front of the flux hopper during welding, the other at the level of the forming fixture with the possibility of regulation its installation, a welding mouthpiece, a vertical support carriage with a power drive and an arm, characterized in that, in order to expand the technological capabilities of the device by expanding the range of materials to be welded and improving the quality of welding, it is equipped with a drive trolley and an additional power drive pivotally mounted at one end to the flux hopper, and the other also pivotally connected to the carriage, which, together with the drive for moving it, is mounted on the trolley, and the bracket of the carriage of the vertical support is connected with a flux hopper pivotally using the axis on which the second trailing wheel and the forming tool are mounted.