SU1428541A1 - Apparatus for automatic tracing the joint of welded parts - Google Patents

Abstract

The invention relates to welding, in particular, to devices for automatically tracking the joint of welded parts. The purpose of the invention is to improve the performance characteristics by reducing the number of temperature-sensitive elements disposed along the seam. The device operates on the principle of controlling the symmetry of the temperature field formed in the parts to be welded by the heat of the welding arc, and includes temperature sensors, an analyzer and a correction device. The temperature sensors are made in the form of two gas-filled tubes connected to pressure sensors. 1 il.

Description

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The invention relates to the automation of welding production, and jiMeHHo to systems that provide for the adjustment of the position of the welding torch relative to the welded joint during the welding process.

The purpose of the invention is to improve the operational characteristics by reducing the number of temperature-sensitive elements.

; The drawing shows the scheme of arrangement,

 The parts to be welded 2 are assembled for i-welding on clamps 2. Along the junction equal to the distance from it, pipes 3 filled with gas are placed on both sides. One end of the tubes 3 i (which does not matter which one) is sealed: or sealed by other means,

and the second is associated with 4 pressure sensors: laziness. The outputs of the pressure sensors 4 and i are connected to the inputs of the analyzer 5. The output- 1 stroke of the analyzer 5 is connected to the correction signals from the pressure sensors 4 is sent to the analyzer 5, which, having compared them, sends a signal to the correcting device that returns the burner 7 to the joint. After welding, the tube 3 is removed and installed on a new product. Since the tubes 3 have a small diameter, they are quickly cooled,

Q and the tracking system returns to its original state. The burden spent on installing new parts for welding, tuning and preparation of the burner 7 is quite enough for

5 cooling to the initial state of the follow system.

Due to the fact that the tubes 3 have a relatively small diameter and are made of thin Metal, they can be bent according to the curvature of the flat joint or bend around them a three-dimensional part, for example, an annular joint of the shells. Tacks 2, located at the junction 5, do not affect the spreading device 6, kinematically 25 the space of heat in the part 1, which is associated with the welding head 7.

The device works as follows.

During the welding process, the heat of the welding arc propagates into the base metal of the parts 1 and acts on the tubes 3, which heat up, therefore the gas is heated in them, which leads to an increase in pressure in the tubes 3. The pressure of the gas is recorded with pressure 4 g. The electrical signal from the latter enters the analyzer 5, in which the signal is amplified, the readings from each sensor 4 are compared. If the signals from the sensors 4 are the same, the analyzer 5 does not output a signal to the correction device 6, which contains the engine associated with the burner 7, If The welding torch is displaced from the joint of the part 1, to which the torch 7s has shifted, heats up more, therefore, the gas pressure in the tube 3 will increase o This pressure increase in the tube 3 is detected by the corresponding pressure sensor 4. In this case, the signals from the pressure sensors 4 go to the analyzer 5, which, having compared them, sends a signal to a correction device, which returns the burner 7 to the joint. After welding, the tube 3 is removed and installed on a new product. Since the tubes 3 have a small diameter, they are quickly cooled,

Q and the tracking system returns to its original state. The burden spent on installing new parts for welding, tuning and preparation of the burner 7 is quite enough for

5 cooling to the initial state of the follow system.

Due to the fact that the tubes 3 have a relatively small diameter and are made of thin Metal, they can be bent according to the curvature of the flat joint or bend around them a three-dimensional part, for example, an annular joint of the shells. Tacks 2 located at junction 5 do not affect races

The device is not sensitive to limitations due to technological factors.

The device is applicable for welding differently thick parts, while the tubes 3 are located asymmetrically relative to the joint. The magnitude of the displacement is determined experimentally.

Ф о рм у л а and 3 о. b e te n i

A device for automatically tracking the joint of the parts to be welded, containing temperature sensors installed on both sides of the joint and connected via an analyzer to a correction device 5 kinematically connected with a welding torch, characterized in that, in order to improve performance by reducing the number of temperature-sensitive elements, the sensors are tagged. "78purtures are made of 3 zide gas-filled tubes connected to pressure sensors.

LZIM - LJ

Claims (1)

A device for automatically tracking the joint of welded parts, comprising temperature sensors installed on both sides of the joint and connected through the analyzer to a correction device kinematically connected to the welding torch, characterized in that, in order to improve performance by reducing the number of heat-sensitive elements, temperature sensors are made in the form of gas-filled tubes connected with pressure sensors.