Butt welding machine with saw blade

Abstract

The invention discloses a butt welding machine with a saw blade. The butt welding machine comprises a servo motor, a lead screw, two guide rods, a dynamic electrode head, a static electrode head, a pressure adjusting device, a welding current generating device, a saw blade positioning device, a temperature control device, a front limiting proximity switch, a rear limiting proximity switch and a controller, wherein the output end of the servo motor is connected with a speed reducing device; the lead screw is connected with the speed reducing device, and is in threaded connection with a left guide rod connecting block; one end of each of the two guide rods is connected with the left guide rod connecting block, and the other ends of the two guide rods are connected with a right guide rod connecting block; the dynamic electrode head and the static electrode head are glidingly connected to the two guide rods; one end of the pressure adjusting device is propped against the dynamic electrodehead, the other end of the pressure adjusting device is connected to the right guide rod connecting block, and one end of the dynamic electrode head is propped against a lug boss on the guide rod; the welding current generating device and the saw blade positioning device are arranged in the installation space of a rear frame; the temperature control device is arranged at the upper end of a box; the front limiting proximity switch and the rear limiting proximity switch are arranged in the box; and the controller is used for controlling the servo motor to rotate according to the preset conditions. The control precision of the position and the speed in the welding process is improved, and the welding quality of the butt welding machine with the saw blade is stabilized and improved.

Description

technical field [0001] The invention relates to the technical field of butt welding machines, in particular to a band saw blade butt welding machine. Background technique [0002] The band saw blade produced on the band saw blade production line is generally 100 meters or hundreds of meters long, and cannot be directly used by the band saw machine. The band saw blade butt welding machine is a special tool to complete the above functions. [0003] The band saw machine is a cutting and blanking machine tool that was gradually developed in the 1990s of the twentieth century, and the matching band saw blade butt welding machine was later. After the band saw machine was widely used, the original manual electric welding could not meet the needs. developed. But the band saw blade butt welding machine technology develops relatively slowly in China. Now the domestically produced band saw blade butt welding machines are all manual or semi-automatic, and only a few imported models ar...

AI Technical Summary

Problems solved by technology

[0006] However, in the above-mentioned drive mechanism, due to the long-time work of the cam, its working rim is prone to wear, and the detection accuracy of the detection switch is relatively low, which reduces the control accuracy of the welding machine's movement position

[0007] In addition, the previous butt welding machine uses a relay circuit or control, which can only be operated in a single step when working

In the butt welding process, the previous butt welding machine directly controls the primary tap of the welding transformer by using an AC contactor, changes the primary-secondary turns ratio of the welding transformer, and then controls the secondary voltage and welding current, so the welding current is step-by-step Adjustment, once the design is completed, it cannot be changed. And the current controlled by the AC contactor is relatively large. When the long-term high-frequency live close-off, the contacts are easy to burn and oxidize, resulting in unstable operation of the butt welding machine

[0008] In the tempering process, the previous butt welding machine manually adjusted an autotransformer to adjust the primary voltage of the welding transformer, and then adjusted the tempering current to control the temperature. Although it is a stepless adjustment, the operator needs to adjust according to Manually adjust the tempering temperature observed by eye, but this method requires the operator to be very skilled and experienced in judging the temperature, otherwise quality problems will occur. This will cause human factors to be involved in the tempering quality of the band saw blade

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