SU1299740A1 - Industrial robot brush for resistance spot welding - Google Patents

Abstract

The invention relates to the field of mechanical engineering and can be used to automate resistance spot welding. The invention makes it possible to combine the process of welding and movement of the robot, reduce the dynamic loads on the coordinates and drives of the robot, protect the welded part from damage when sticking the electrodes, reduce the mass of the cylinder, and reduce the dimensions of the robot's hand. During the welding cycle, the electrode holders 3, 4, the pivot shaft 5, the pin 11, the piston rod 10, the spring 12, the microswitch 13 remain stationary relative to the product. At the same time, the cylinder 8 is moved with the brush of the robot. In the case of sticking of the electrodes, the holders 3, 4, the hinge axis 5, the pin 11 remain stationary relative to the part to be welded. The piston rod 10 under the action of the applied pressure and the movement of the robot will move with the cylinder 8. This will compress the spring 12 and the pin 11 will move away from the pushbutton of the microswitch 13, the contact of which will open and give a signal to the control system to stop the robot. 2 Il. 8idA i SL Yu to with (; o 4i

Description

The invention relates to mechanical engineering and can be used to automate resistance spot welding.

The aim of the invention is to reduce the mass of the cylinder, reduce the dimensions of the brush, reduce backlash and thereby increase the durability of the work and drive speed, as well as prevent damage to the welded part when the electrodes stick.

In the case of sticking of the electrodes, the electrode holders 3 and 4, the axis 5 of the hinge, the pin 11 remain stationary relative to the part to be welded. The piston rod 10 under the action of the applied pressure and the movement of the robot will move along with the cylinder 8. At the same time, the spring 12 is compressed, and the pin 11 moves away from the pushbutton of the microswitch 13, the contact of which opens and gives a signal to the system

FIG. Figure 1 shows a robot for contacting the robot to control its stop.

Noah spot welding, general view; in fig. 2, cylinder feed and hinge for welding guns, view A in FIG. one.

On the output flange 1 of the robot brush

Due to the fact that during the welding cycle of one point the robot's brush moves to the next, the pause time between welding cycles is reduced, and the performance of the tongs 2 are set. The holders of the electrodes grow 1.5-2 times.

Dov 3, 4 mounted pivotally on the axis 5 of the hinge made in the form of a hollow cylinder. The pivot shaft axis 5 is mounted on balls b located in the multi-bottom separator 7. The balls are in contact with the cylindrical surface of the cylinder with a su-20 surae, and they are connected with a bracket. Existence

9, which is fixed to the output flange of the brush 2. Inside the billow cylinder there is a piston-piston 10, which is connected to the hinge axis 5 via a pin 11. The pin 25 11 is in the groove of the rod-piston and interacts with it through the spring 12, located inside the rod-piston 10 and installed with it coaxially on the side of the piston. On the other hand, the pin 11 doesn’t have any acceleration and deceleration of the robot links, since the robot moves at a constant speed, which is sharply reduced. The loads on the mechanical components and the drive of the robot decrease, which increases its unblocking from sticking of electrodes which increases the yield of products.

Claims (1)

Invention Formula Brush industrial robot for resistance spot welding, containing the output flange mounted pivotally It works with the groove wall of the rod-piston-30 electrode holders, the cylinder sending n and microswitch 13. The device works as follows. During the welding cycle, the electrode holders 3, 4 and the hinge axis 5 associated with them, pin 11, piston rod 10, spring 12, microswitch 13 remain stationary relative to the product. Cylinder 8 moves to the right with bracket 35 rod-piston electrodes, characterized in that, in order to simplify the design, reduce its weight and size, and protect the welded part from damage when sticking the electrodes, it is equipped with a microswitch mounted on the piston rod and installed with the possibility of interaction with the microswitch , spring-loaded in the direction of the pin installed in 9 along the edge of the product with a brush 40 grooves provided in the piston rod and the wall of the cylinder, and the axis of the hinge of the electrode holders made in the form of a hollow cylinder, and the hollow cylinder of the hinge axis are provided with ball bearings, by means of which it is mounted on a cyrobot. After the end of welding, the electrode holders move away from the part, pressure is applied to the piston cavity of the cylinder and the piston rod moves to the right position, then the next point is given to weld. 45 lindre. In the case of sticking of the electrodes, the electrode holders 3 and 4, the axis 5 of the hinge, the pin 11 remain stationary relative to the part to be welded. The piston rod 10 under the action of the applied pressure and the movement of the robot will move along with the cylinder 8. At the same time, the spring 12 is compressed, and the pin 11 moves away from the pushbutton of the microswitch 13, the contact of which opens and gives a signal to the system  control the robot to stop it. Due to the fact that during the welding cycle of one point the robot's brush moves to the next, the pause time between welding cycles is reduced, and the productivity increases 1.5-2 times. Surah, Availability In this case, the acceleration and deceleration of the links of the robot are absent, since the robot moves at a constant speed, which is sharply reduced. the blocking from sticking of the electrodes makes it possible to protect the welded products from damage, which increases the yield of suitable products. Invention Formula Brush industrial robot for resistance spot welding, containing the output flange mounted pivotally rod-piston electrodes, characterized in that, in order to simplify the design, reduce its weight and size, and protect the welded part from damage when sticking the electrodes, it is equipped with a microswitch mounted on the piston rod and installed with the possibility of interaction with the microswitch , spring-loaded in the direction of the pin installed in the wall of the valuable axis 45 lindre. I ,, ,one