SU946862A2 - Apparatus for automatic welding - Google Patents

Description

(54) DEVICE FOR AUTOMATIC WELDING

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The invention relates to devices for the automatic welding of mainly cylindrical articles.

According to the main author. St. No. 713673, a device for automatic welding is known, mainly related to the production of equipment for automatic welding. This device is equipped with a calibration unit, made in the form of a calibration matrix with a slit mounted on the body to move along the longitudinal axis of the product, an expanding punch fixed in the headstock, and a face clamp made in the form of a body in which the circumferential is mounted with the possibility of radial the movement of the rotating rollers and the wedge-shaped abutment, the welding head being equipped with a pressure roller interacting with said abutment 1.

However, the known device does not provide trimming of the ends of the shell before welding at the workplace, while trimming improves the fit of the edges of the shell and the bottom to each other before welding, which improves the quality of the weld.

The purpose of the invention is the extension of the technological capabilities of the device.

The goal is achieved by the fact that the device for automatic welding according to ed. swith No. 713673 is equipped with .mechanism

 for trimming the ends of the shell, made in the form of a scoring carriage and fork-shaped tool holder with cutters installed with the possibility of movement in the direction perpendicular to the axis of the workpiece along the guides made on the gage matrix carriage.

FIG. 1 shows the device, a general view; in fig. 2 - the same, top view; on

15 of FIG. 3 - undercut carriage; in fig. 4 shows section A-A in FIG. 3

On the housing 1 of the device, an engine 2 is installed with a longitudinal stroke connected by means of the lead screw 3 and guides 4 and 5 to the carriage 6, in which the welding head 7 and the pressure roller 8 are mounted. To the plate 9, pinch 10 of the headstock an expanding punch 11 is connected, the BbicTVTi of which consists of two sectors associated with the piston rod of the pneumatic cylinder 12. The calibration matrix 13 with a longitudinal slit is mounted on rotating supports embedded in the carriage 14, and equipped with a mechanism for trimming the ends of the shell made in the form of a cutting square webs 15 mounted by means of guides 16 on the carriage 4 and fork-shaped tool post 17, which are fixedly movable along the guides perpendicular to the axis of the workpiece, the cutter 18 is fixed on the tool post 17 by means of clamping bolts 19. On the undercut carriage 15 there is a flywheel 20 for removal of the carriage after trimming the ends.

The end clamp 21 is installed in quill 23 of the tailstock 24 connected to the pneumatic cylinder 25 with a shank 22. Inside the clamp there is a rotating disk 26, and protrusions with rotating supports are welded to the body of the clamp 27. There is a stop 28 on the clamp 21 to retract the clamping roller 8 .

In the device, trimming of the end surfaces is carried out as follows.

The diameter of the protrusion of the expanding punch 11 with the help of the pneumatic cylinder 12 is set smaller than the inner diameter of the shell. The carriage 14 with the calibrating matrix 13 is pushed away from the punch 11 to the right and the shell is installed inside the matrix 13 so that its welded joint coincides with an arcuate slot of the matrix. Next, the carriage 14, together with the shell, is fed to the left to the punch 11. In this case, the shell is pushed onto the punch 11, and the nominal size of the punch protrusion is set by the pneumatic cylinder 12 and the shell is pressed tightly by the punch in the matrix 13. Then, with a rotating spindle, the cutting carriage is fed to the shell. flywheel assistance 20 and trimming the ends of the shell on both sides.

At the end of the process, the scoring carriage is retracted to its original position.

Then inside the clamp 21 set the bottom of the boiler. A protrusion with turntable supports 27 serves to set up and calibrate the bottom with respect to the outer diameter. The tailstock 24 using the pneumatic cylinder 25 is fed to the left, put the bottom on the punch 11 and pressed it to the side. By trimming the ends, the fit of the sides of the shell and the bottom to each other is improved, which improves the quality of the weld, and by trimming the end on the other side of the shell, the height of the boiler is maintained, which improves its appearance.

This completes the calibration of dimensions and relative position, as well as the preparation of the boiler components for welding.

First, the longitudinal weld is welded, and then the circumferential weld.

The product is removed after removal of the tailstock 24, the carriage 14 with the gage matrix 13 to its original position, as well as the reduction of the protrusion of the punch 11.

The use of the proposed device will allow to increase labor productivity by reducing the technological cycle of production of these products and improving the quality of the welded joint.

Claims (1)

Invention Formula .Automatic welding device as per av. St. No. 713673, characterized in that, in order to expand technological capabilities, the device is equipped with a mechanism for trimming the ends of the shell, made in the form of a scoring carriage and a forked tool holder with cutters mounted for movement in the direction of the normal axis of the workpiece along the guides, made on the carriage calibrating matrix. Sources of information taken into account in the examination 1. USSR author's certificate L 713673, cl. In 23 K 37/00, 1978 (prototype). E 12 / 2 Cpua.l 25 / sh РР gtt BT W) S