CN213163563U - High-frequency electronic switch arc striking device - Google Patents
High-frequency electronic switch arc striking device Download PDFInfo
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- CN213163563U CN213163563U CN202022012711.4U CN202022012711U CN213163563U CN 213163563 U CN213163563 U CN 213163563U CN 202022012711 U CN202022012711 U CN 202022012711U CN 213163563 U CN213163563 U CN 213163563U
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Abstract
The utility model discloses a high-frequency electronic switch arc striking device, which comprises a signal input end, a photoelectric coupling tube, a control switch, a rectification circuit and a high-voltage generator which are arranged in sequence; when the signal input end realizes low-level input, the photoelectric coupling tube converts a low-level signal into conduction voltage, the control switch is closed to work, the current of the rectifier circuit is completed, the rectifier circuit converts the input alternating current into high-frequency direct current voltage, and the high-voltage generator can realize high-frequency high-voltage output. The utility model discloses a simplify the circuit, conveniently realize the control of high frequency electronic switch arc striking device, have that response speed is fast, long service life, characteristics that the reliability is high.
Description
Technical Field
The utility model relates to a welding machine power technical field, in particular to high frequency electronic switch arc striking device.
Background
The high-frequency arc striking device of the existing argon arc welding and plasma cutting machine obtains alternating voltage from an additional winding on a main transformer, the alternating voltage is boosted by a high-voltage pack and then charges a high-voltage capacitor, when the capacitor voltage is charged to a certain degree, a discharge nozzle is enabled to puncture air for discharging, and high-frequency high voltage is isolated and coupled to the output end of the welding machine by an arc striking coil. The switching devices for controlling the alternating voltage in the high-frequency arc starting device all use relays. The relay is used for controlling the high-frequency discharge, and has the following defects: the mechanical switch of the relay has short service life; the mechanical switch generates noise, and the contact is easy to arc; the volume is large, and the space of the circuit board is occupied; the current for driving the relay is large, and the back electromotive force of the coil impacts the control circuit to influence the reliability; the relay switch response time delay is about 10ms, and the method is not suitable for rapid spot welding. Therefore, the traditional technical scheme has the defects of low response speed, short service life and low reliability.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high frequency electronic switch arc striking device for solve above-mentioned technical problem, have that circuit structure is succinct, control is convenient, characteristics that the reliability is high.
The utility model provides a technical problem can adopt following technical scheme to realize:
a high-frequency electronic switch arc striking device is composed of a signal input end, a photoelectric coupling tube, a control switch, a rectifying circuit and a high-voltage generator which are sequentially arranged; when the signal input end realizes low-level input, the photoelectric coupling tube converts a low-level signal into conduction voltage, the control switch is closed to work, the current of the rectifier circuit is completed, the rectifier circuit converts the input alternating current into high-frequency direct current voltage, and the high-voltage generator can realize high-frequency high-voltage output.
The high-voltage generator comprises three capacitors, an arc striking coil and a discharge nozzle, an electrode needle is arranged on the discharge nozzle in a matched mode, and high-frequency high voltage can be applied between the electrode needle and a workpiece.
And a current-limiting resistor is arranged between the signal input end and the photoelectric coupling tube.
The rectification circuit is a bridge rectification circuit.
The signal input end adopts a CON socket.
The high-voltage generator adopts a high-voltage pack of an argon arc welding machine.
The capacitor adopts a 10KV high-voltage capacitor.
Compared with the prior art, the utility model have following outstanding advantage and effect: the utility model discloses a simplify the circuit, conveniently realize the control of high frequency electronic switch arc striking device, have that response speed is fast, long service life, characteristics that the reliability is high.
The features of the present invention will be apparent from the accompanying drawings and from the detailed description of the preferred embodiments which follows.
Drawings
FIG. 1 is a schematic view of the control structure of the present invention;
FIG. 2 is a schematic diagram of the circuit structure of the present invention;
wherein, 1, a signal input end; 2. a current limiting resistor; 3. a photoelectric coupling tube; 4. a control switch; 5. a rectifying circuit; 6. a high voltage generator; 61. a discharge nozzle; 62. an arc striking coil; 63. and a capacitor.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
As shown in fig. 1 to 2, a high-frequency electronic switch arc striking device is composed of a signal input end 1, a photoelectric coupling tube 3, a control switch 4, a rectifying circuit 5 and a high-voltage generator 6 which are sequentially arranged; when the signal input end 1 realizes low-level input, the photoelectric coupling tube 3 converts a low-level signal into conduction voltage, the control switch 4 is closed to work, the current of the rectifier circuit 5 is completed, the rectifier circuit 5 converts the input alternating current into high-frequency direct current voltage, the high-voltage generator 6 can realize high-frequency high-voltage output, high-frequency high voltage is applied between the electrode needle and a workpiece, the air is punctured to be conductive, and then the arc is ensured to be stable through continuous direct current voltage supply of the rectifier circuit 5.
Preferably, the high voltage generator 6 comprises three capacitors 63, an arc striking coil 62 and a discharge nozzle 61, an electrode needle is arranged on the discharge nozzle 61 in a matching manner, high frequency and high voltage can be applied between the electrode needle and a workpiece, and the capacitor 63 is a 10KV high voltage capacitor.
Preferably, a current limiting resistor 2 is arranged between the signal input end 1 and the photoelectric coupling tube 3.
Preferably, the rectifier circuit 5 is a bridge rectifier circuit.
Preferably, the high-voltage generator 6 adopts a high-voltage bag of an argon arc welding machine.
The utility model discloses a simplify the circuit, conveniently realize the control of high frequency electronic switch arc striking device, have that response speed is fast, long service life, characteristics that the reliability is high.
Referring to fig. 2, the CON1 socket is configured to receive a signal from a control switch, and the electrical signal passes through a current limiting resistor R3, so as to control the operation of the photocoupler IC 1; when CON1 is at high level, the photoelectric coupling tube IC1 is turned on, the grid of the control switch Q1 is at low level, the control switch Q1 is turned off and does not work, so that the rectifying circuit of D1-D4 does not work, at the moment, the high-voltage generator T1 does not work, and the working state is the normal welding state after the arc starting of the welding machine; when CON1 is at low level, photoelectric coupling tube IC1 is cut off, control switch Q1 grid is at high level, control switch Q1 is conducted and operated, the rectifier circuit of D1-D4 is operated, high voltage generator T1 is operated at this moment, can finish the striking of the welding machine, realize the arc starting working mode of high voltage breakdown, usually add high frequency high voltage between electrode needle and work piece, in order to realize breaking down argon gas or plasma air, finish conducting electricity, then supply the continuous direct current voltage, guarantee the arc is stable.
In the embodiment, the bridge rectifier circuit converts the externally connected alternating current into direct current voltage, and the switch Q1 is controlled to be used as a switch of the output end of the rectifier circuit to control the generation of electric arcs; and the CON1 socket converts the external control signal into the on-state voltage of the photoelectric coupling tube IC1, and the control signal is transmitted to the control end of the control switch Q1 through the photoelectric coupling tube IC1 to control the output of the rectifying circuit to the arc.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.
Claims (7)
1. The high-frequency electronic switch arc striking device is characterized in that: the device comprises a signal input end (1), a photoelectric coupling tube (3), a control switch (4), a rectifying circuit (5) and a high-voltage generator (6) which are sequentially arranged; when the signal input end (1) realizes low-level input, the photoelectric coupling tube (3) converts a low-level signal into conduction voltage, the control switch (4) is closed to work, the current of the rectifier circuit (5) is completed, the rectifier circuit (5) converts the input alternating current into high-frequency direct current voltage, and the high-voltage generator (6) can realize high-frequency high-voltage output.
2. A high-frequency electronic switch arc ignition device according to claim 1, characterized in that: the high-voltage generator (6) comprises three capacitors (63), an arc striking coil (62) and a discharge nozzle (61), an electrode needle is arranged on the discharge nozzle (61) in a matched mode, and high-frequency high voltage can be added between the electrode needle and a workpiece.
3. A high-frequency electronic switch arc ignition device according to claim 1, characterized in that: and a current-limiting resistor (2) is arranged between the signal input end (1) and the photoelectric coupling tube (3).
4. A high-frequency electronic switch arc ignition device according to claim 1, characterized in that: the rectifying circuit (5) is a bridge rectifying circuit.
5. A high-frequency electronic switch arc ignition device according to claim 1, characterized in that: the signal input end (1) adopts a CON socket.
6. A high-frequency electronic switch arc ignition device according to claim 1, characterized in that: the high-voltage generator (6) adopts an argon arc welding machine high-voltage pack.
7. A high-frequency electronic switch arc ignition device according to claim 2, characterized in that: the capacitor (63) adopts a 10KV high-voltage capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022012711.4U CN213163563U (en) | 2020-09-15 | 2020-09-15 | High-frequency electronic switch arc striking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022012711.4U CN213163563U (en) | 2020-09-15 | 2020-09-15 | High-frequency electronic switch arc striking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213163563U true CN213163563U (en) | 2021-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022012711.4U Active CN213163563U (en) | 2020-09-15 | 2020-09-15 | High-frequency electronic switch arc striking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213163563U (en) |
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2020
- 2020-09-15 CN CN202022012711.4U patent/CN213163563U/en active Active
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