SU919824A1 - Unit for gas-shield welding - Google Patents

Description

(5) INSTALLATION FOR WELDING IN THE ENVIRONMENT OF PROTECTIVE GASES

one

This invention relates to protective gas welding installations with grippers used in instrument engineering and semiconductor manufacturing.

A multi-position vacuum gripper is known, in which the vacuum network communicates with the working positions of P.

The disadvantage of this capture is ow. The low force developed to retain the part.

Known vacuum capture, the design of which has a special valve that interrupts the network of vacuum in the absence of parts on the holder 2.

The disadvantage of this grip is also a small developed force.

Closest to the invention to the technical essence and the achieved result is a device for welding in a protective gas environment, which contains a chamber with a rotatable grip for a product installed therein.

In this installation, the product is moved by a chamber with a protective gas, followed by welding it Z.

However, the known installation is characterized by the complexity of the design of the grip and the lack of reliability of its rotation.

The purpose of the invention. - simplifying the design and improving the reliability of fixing the product.

ten

The goal is achieved by the fact that the installation for gas-shielded welding, containing a chamber with a rotatable grip for a product installed in it, is provided with a compressor mounted outside the chamber and connected to the chamber, and the grip is designed as one installed in one of the chamber walls. longitudinal movement of the tube with the spool fixed on the end of the tube located outside the chamber.

Claims (3)

FIG. 1 shows the installation; in fig. 2 is a section A-A in FIG. 1. The installation includes a chamber 1 communicating with a compressor (not shown), i.e. with a network of overpressure, through nozzles 2, and with the atmosphere through a drain valve 3. The chamber is equipped with a table for the product and the gripper 5. The gripper 5 is made in the form of a tube 6 with a hollow holder 7 mounted for longitudinal movement and rotation. The channels 8 and 9 of the tube and the holder communicate with each other, and through the groove 10 of the spool 11 - with the atmosphere. The longitudinal movement of the spool 11 nor step d 01- retracting the screw head 12 of the screw .13. The installation works as follows. FIG. 1, the installation is shown at the time of overpressure operation, when the product If is raised to a certain table height, and is pressed against the holder 7 with a force arising from the difference in overpressure in chamber 1 and the pressure of the atmosphere of the holder. In doing so, channels 9 and 8 through the groove 10 of the spool 11 communicate with the atmosphere. In the extreme upper position, the holder 7 with the tube 6 and the product I rotates relative to the axis 00 to the required angle and, moving down, places part 14 (dotted line) on table A in the new position. Then the spool 11 is moved to the right. one step and, dissociating channels 8 and 9 with the atmosphere. Due to air inflow into the joint between the end of the deflector 7 and the end of the product I, the pressure in the channels 8 and 9 is equalized with the pressure in the chamber 1. The product is separated from the holder, which rises to its original position. After the end of the technological operation, the holder 7, having lowered, channels 8 and 9 through the groove 10 of the spool 11, communicates with the atmosphere and, seizing the product, rises where it turns the part to the next angle. Valve is used to control the pressure in chamber 1. After the completion of all technological operations on the table k, the overpressure network is shut off, the overpressure in chamber 1 is released, protective gas is supplied to the chamber and welding is performed. The developed gripping force at a pressure in the chamber of 5 atm is 5 kg / cm. Thus, this installation provides for the interchange of heavy items in the chamber with their subsequent welding in protective gas with a relatively simple design. An apparatus for shielding gas welding, comprising a chamber with a rotary gripping device installed therein, characterized in that, in order to simplify the construction, it is equipped with a compressor mounted outside the chamber and connected to the chamber, and the gripper is designed as installed in one of the walls of the chamber with the possibility of pro- longitudinal movement of the tube with the spool mounted on the end of the tube located outside the chamber. Sources of information taken into account in the examination. 1. The patent of France No. 2178865, cl. On 25/15/06, 1973. 2. Authors certificate of the USSR N 567596, cl. B 25 B 11/00, 1977. 3. USSR author's certificate No. 300271, cl. In 23 K 9/16, 1970 (prototype). .