CN104493384A - A spark arrester - Google Patents

Abstract

The invention discloses a spark elimination device, which is connected to the line between the welding machine mainframe and the welding handle; the detection control circuit includes a 24V double normally closed solid-state relay, a controller, a three-position selection switch, a current detection module and a DC control AC solid-state relay, the DC control AC solid-state relay is connected to the live line between the welding machine mainframe and the welding handle, the controller connects the neutral line and the three-position selection switch between the welding machine mainframe and the welding handle through the 24V double normally closed solid-state relay; the three-position selection switch connects the live line and the current detection module between the DC control AC solid-state relay and the welding handle; the current detection module is connected to the controller. After the present invention is connected between the welding machine mainframe and the welding handle, it can detect the current to confirm whether welding can be performed, thereby effectively solving the spark problem and the problem of excessive current, thereby eliminating the electric sparks generated during welding, ensuring the personal safety of the user, and improving the welding quality.

Description

A spark arrester

technical field

The invention relates to the technical field of welding equipment, in particular to a device for processing sparks generated during welding.

Background technique

Under the background of the rapid development of the electronics industry, the application of high-speed welding machines is becoming more and more extensive. However, some problems existing in high-speed welding machines have not been well resolved, which has brought great inconvenience to the user's operation and formed a great restriction on the development of high-speed welding machines.

The most common problem is the spark problem during welding, because the principle of high-speed welding machine is to use high current and low voltage to short circuit to generate short circuit current to obtain high temperature for welding. There is a touch moment during welding, and the contact surface is very small (that is, the zero line and the live line are too close to form a loop through air conduction). Because a short circuit will generate a large current at an instant, and the unstable contact will form an electric spark, which will not only affect the welding quality, but also pose a certain safety hazard to the operator.

Contents of the invention

Aiming at the defects of the prior art, the present invention provides a simple in structure, safe and reliable device capable of effectively eliminating electric sparks during welding.

In order to solve the above technical problems, the present invention adopts the following technical solutions: a spark elimination device, characterized in that: the detection control circuit of the spark elimination device is connected to the line between the welding machine host and the welding handle; the detection control circuit Including 24V double normally closed solid state relay, controller, three-position selector switch, current detection module and DC control AC solid state relay, in which the DC control AC solid state relay is connected to the fire wire between the welding machine host and the welding handle, and the controller passes through the 24V The double normally closed solid state relays are connected to the zero line between the welding machine host and the welding handle, and the other line is connected to the three-position selector switch through the 24V double normally closed solid state relays, and the controller provides 24V control voltage to the 24V double normally closed solid state relays; three selectors One of the switch connections is connected to the live wire between the DC control AC solid state relay and the welding handle, and the other is connected to the current detection module; one of the current detection modules is connected to the controller, and the other is connected to the neutral wire between the welding machine host and the welding handle.

Further, an aviation plug is used for docking between the welding machine host and the spark elimination device; an aviation plug is used for docking between the spark elimination device and the welding handle.

Further, the DC control AC solid state relay is a DC 3-24V control AC 24-380V/60A solid state relay.

Further, the current detection module includes three terminals COM, CK and CB, wherein the COM terminal is a common terminal, the CK terminal is a normally open terminal, and the CB terminal is a normally closed terminal, and the three terminals are all connected to the controller.

After adding the detection control loop, first disconnect the main loop power supply. Add a 24V power supply to the two power lines of the welding machine host for detection, so that the welding handle and the welding table of the welding machine form a loop. When the circuit is connected, that is, when the welding handle touches the welding table, the 24V double normally closed solid state relay is energized, and the double normally closed solid state relay is disconnected. DC 3-24V controls the AC 24-380V/60A solid state relay to power on, and the main circuit power supply is connected. The current detection module detects the current, the normally closed is open, the long open is closed, and welding can be performed. When the welding is completed, the current detection module does not detect the current, the normally closed is closed, the normally open is disconnected, the DC 3-24V controls the AC 24-380V/60A solid state relay to cut off the power, the main circuit power is cut off, and the 24V double normally closed solid state relay is cut off. power, the detection signal is connected.

After the present invention is connected between the welding machine host and the welding handle, it detects the current to confirm whether welding can be performed, thereby effectively solving the problem of sparks and excessive current, thereby eliminating the electric sparks generated during welding, and protecting the user's personal safety. Safety, improve welding quality.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

In the figure, 1 is the welding machine host, 2 is the detection control circuit, 3 is the 24V double normally closed solid state relay, 4 is the controller, 5 is the three-position selector switch, 6 is the current detection module, 7 is the DC control AC solid state relay, 8 is a welding handle.

Detailed ways

In this embodiment, referring to FIG. 1, the spark elimination device, the detection control circuit 2 of the spark elimination device is connected to the line between the welding machine host 1 and the welding handle 8; the detection control circuit 2 includes a 24V dual normal Close the solid state relay 3, the controller 4, the three-position selector switch 5, the current detection module 6 and the DC control AC solid state relay 7, wherein the DC control AC solid state relay 7 is connected to the live wire L between the welding machine host 1 and the welding handle 8, The controller 4 is connected to the zero line N between the welding machine host 1 and the welding handle 8 through the 24V double normally closed solid state relay 3, and the other is connected to the three-position selector switch 5 through the 24V double normally closed solid state relay 3, and the controller 4 is connected to the 24V The double normally closed solid state relay 3 provides 24V control voltage; the three-position selector switch 5 is connected one way to the live wire between the DC control AC solid state relay 7 and the welding handle 8, and the other way is connected to the current detection module 6; the current detection module 6 is connected to the controller one way 4. The other line connects the zero line between the welding machine host 1 and the welding handle 8.

An aviation plug is used for docking between the welding machine host 1 and the spark eliminating device; and an aviation plug is used for connecting between the spark eliminating device and the welding handle 8 .

The DC-controlled AC solid state relay 7 is a DC 3-24V controlled AC 24-380V/60A solid state relay.

The current detection module 6 includes three terminals COM, CK and CB, wherein the COM terminal is a common terminal, the CK terminal is a normally open terminal, and the CB terminal is a normally closed terminal, and the three terminals are all connected to the controller 4 .

After adding the detection control loop 2, first disconnect the main loop power supply. Add a 24V power supply to the two power lines of the welding machine host 1 for detection, so that the welding handle 8 and the welding table of the welding machine form a loop. When the circuit is connected, that is, when the welding handle 8 touches the soldering station, the 24V double normally closed solid state relay 3 is energized, and the double normally closed solid state relays are disconnected. DC 3-24V controls the AC 24-380V/60A solid state relay to power on, and the main circuit power supply is connected. The current detection module 6 detects the current, the normally closed is open, the long open is closed, and welding can be performed. When the welding is completed, the current detection module 6 does not detect the current, the normally closed is closed, the normally open is disconnected, the DC 3-24V controls the AC 24-380V/60A solid state relay to power off, the main circuit power is cut off, and the 24V double normally closed solid state relay 3 power off, the detection signal is connected.

The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention, and should not limit the scope of the application. within the scope of the invention.

Claims (4)

1. a spark blowout, is characterized in that: the detection control loop of this spark blowout is connected to welding machine main frame with on the circuit welded between handle; This detection control loop comprises the two normally closed solid-state relay of 24V, controller, three selector switches, current detection module and DC controling ac solid-state relays, wherein DC controling ac solid-state relay connects welding machine main frame with on the live wire welded between handle, controller is leaded up to the two normally closed solid-state relay of 24V and is connected welding machine main frame and the zero line welded between handle, the two normally closed solid-state relay of 24V of separately leading up to connects three selector switches, and controller provides 24V control voltage to the two normally closed solid-state relay of 24V; Three selector switches connect a road and connect DC controling ac solid-state relay and the live wire welded between handle, and another road connects current detection module; Current detection module one tunnel connection control device, another road connects welding machine main frame and the zero line welded between handle.

2. spark blowout according to claim 1, is characterized in that: adopt aviation plug to dock between welding machine main frame with this spark blowout; This spark blowout adopts aviation plug to dock with welding between handle.

3. spark blowout according to claim 1, is characterized in that: described DC controling ac solid-state relay is the solid-state relay that direct current 3-24V controls to exchange 24-380V/60A.

4. spark blowout according to claim 1, is characterized in that: described current detection module includes COM, CK and CB tri-terminals, and wherein COM end is common port, and CK end is Chang Kaiduan, CB end is normal-closed end, and three terminals are all connected to controller.