CN113319400A - Arc striking circuit of stud welding machine - Google Patents
Arc striking circuit of stud welding machine Download PDFInfo
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- CN113319400A CN113319400A CN202110780646.6A CN202110780646A CN113319400A CN 113319400 A CN113319400 A CN 113319400A CN 202110780646 A CN202110780646 A CN 202110780646A CN 113319400 A CN113319400 A CN 113319400A
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- circuit
- electrically connected
- stud welding
- arc striking
- welding machine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/06—Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc
- B23K9/067—Starting the arc
- B23K9/0671—Starting the arc by means of brief contacts between the electrodes
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- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding Control (AREA)
Abstract
The invention discloses an arc striking circuit of a stud welding machine, which is used for striking an arc of the stud welding machine and comprises a power supply circuit, a rectifying and filtering circuit, a Solid State Relay (SSR) and a delay circuit, wherein the power supply circuit is respectively and electrically connected with the rectifying and filtering circuit and the SSR, the first output end of the rectifying and filtering circuit is electrically connected with a welding gun A1 of the stud welding machine, and the second output end of the rectifying and filtering circuit is electrically connected with a plate A2. The arc striking circuit of the stud welding machine has the function of turning off after arc striking, enables the voltage device to be small in power and small in size, enables the arc striking effect to be good through the descending characteristic of the resistor, the filtering characteristic of the inductor and the counter electromotive force, and is suitable for stud welding of various stud welding machines.
Description
Technical Field
The invention belongs to the technical field of arc striking of stud welding machines, and particularly relates to an arc striking circuit of a stud welding machine.
Background
Stud welding is a method of making one end of a stud contact with the surface of a plate (or a pipe fitting), striking an arc by electricity, and welding the stud under a certain pressure after the contact surface is melted.
With the development of stud welding machines, the stud welding machines are required to be mentioned less and less, and circuits of all parts of the stud welding machines are required to be simpler and can realize reliable functions. After the auxiliary winding on the traditional winding transformer is provided with the arc striking circuit, the traditional winding transformer is large in size and complex in structure, and is not suitable for the existing stud welding machine, particularly the inverter welding machine.
Therefore, the above problems are further improved.
Disclosure of Invention
The invention mainly aims to provide an arc striking circuit of a stud welding machine, which has the function of turning off after arc striking, enables a voltage device to have small power and small volume, has good arc striking effect through the reduction characteristic of a resistor, the filtering characteristic of an inductor and back electromotive force, and is suitable for stud welding of various stud welding machines.
In order to achieve the above object, the present invention provides an arc striking circuit for a stud welding machine, which is used for arc striking of the stud welding machine, and comprises a power circuit, a rectification filter circuit, a Solid State Relay (SSR) and a delay circuit, wherein:
the power circuit is respectively electrically connected with the rectifying and filtering circuit and the SSR, a first output end (negative electrode) of the rectifying and filtering circuit is electrically connected with a welding gun A1 of the stud welding machine, and a second output end of the rectifying and filtering circuit is electrically connected with a plate A2 (the welding gun welds a stud to the plate);
the delay circuit is electrically connected with a host of the stud welding machine and is used for receiving arc striking signals output by the host.
As a further preferable technical solution of the above technical solution, the rectifier filter circuit includes a rectifier bridge D, a resistor R1 and an inductor L1, a first output end (4 pins) of the rectifier bridge D is electrically connected to a welding gun a1 of the stud welding machine, and a second output end (2 pins) of the rectifier bridge D is electrically connected to a plate a2 (the welding gun welds a stud to the plate) sequentially through the resistor R1 and the inductor L1.
As a further preferable technical solution of the above technical solution, the power circuit includes a transformer T1, the first output end (3 pin) of the transformer T1 is electrically connected to the first input end (1 pin) of the rectifier bridge D, and the second output end (4 pin) of the transformer T1 is electrically connected to the second input end (3 pin) of the rectifier bridge D through a solid state relay SSR (the side of the transformer T away from the rectifier bridge provides 220V-380V ac, and after being stepped down, provides 70V-110V ac (through the solid state relay SSR) to the rectifier bridge D).
As a further preferable technical solution of the above technical solution, the delay circuit includes a transistor Q1, a resistor R2, a capacitor C1, and a resistor R3, wherein:
a collector of the triode Q1 is electrically connected with a first output end (4 pins, positive pole) of the solid-state relay SSR, a first path of an emitter of the triode Q1 is electrically connected with a negative pole of an arc striking signal sequentially through a resistor R2 and a capacitor C1, a second path of the emitter of the triode Q1 is electrically connected with a positive pole of the arc striking signal, and a base of the triode Q1 is electrically connected with a common connection end of the resistor R2 and the capacitor C1 through a resistor R3.
As a further preferable technical solution of the above technical solution, a second output end (pin 3) of the solid-state relay SSR is grounded, and one end of the capacitor C1, which is far away from the resistor R2, is also grounded.
Drawings
FIG. 1 is an arc striking circuit diagram of a stud welder of the present invention.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
The invention discloses an arc striking circuit of a stud welding machine, and the specific embodiment of the invention is further described in combination with the preferred embodiment.
Referring to fig. 1 of the drawings, fig. 1 is a circuit diagram of arc striking of a stud welding machine of the present invention.
In the embodiments of the present invention, those skilled in the art note that the stud welding machine, the board, the solid-state relay, and the like to which the present invention relates may be regarded as the prior art.
PREFERRED EMBODIMENTS
The invention discloses an arc striking circuit of a stud welding machine, which is used for striking an arc of the stud welding machine and comprises a power circuit, a rectifying and filtering circuit, a Solid State Relay (SSR) and a time delay circuit, wherein:
the power circuit is respectively electrically connected with the rectifying and filtering circuit and the SSR, a first output end (negative electrode) of the rectifying and filtering circuit is electrically connected with a welding gun A1 of the stud welding machine, and a second output end of the rectifying and filtering circuit is electrically connected with a plate A2 (the welding gun welds a stud to the plate);
the delay circuit is electrically connected with a host of the stud welding machine and is used for receiving arc striking signals output by the host.
Specifically, the rectifying and filtering circuit comprises a rectifying bridge D, a resistor R1 and an inductor L1, wherein a first output end (4 pins) of the rectifying bridge D is electrically connected with a welding gun A1 of the stud welding machine, and a second output end (2 pins) of the rectifying bridge D is electrically connected with a plate A2 (the welding gun welds a stud to the plate) sequentially through the resistor R1 and the inductor L1.
More specifically, the power circuit includes a transformer T1, a first output terminal (3 pins) of the transformer T1 is electrically connected to a first input terminal (1 pin) of the rectifier bridge D, and a second output terminal (4 pins) of the transformer T1 is electrically connected to a second input terminal (3 pins) of the rectifier bridge D through a solid state relay SSR (the side of the transformer T away from the rectifier bridge provides 220V-380V ac power, and after being stepped down, provides 70V-110V ac power (through the solid state relay SSR) to the rectifier bridge D).
Further, the delay circuit comprises a transistor Q1, a resistor R2, a capacitor C1 and a resistor R3, wherein:
a collector of the triode Q1 is electrically connected with a first output end (4 pins, positive pole) of the solid-state relay SSR, a first path of an emitter of the triode Q1 is electrically connected with a negative pole of an arc striking signal sequentially through a resistor R2 and a capacitor C1, a second path of the emitter of the triode Q1 is electrically connected with a positive pole of the arc striking signal, and a base of the triode Q1 is electrically connected with a common connection end of the resistor R2 and the capacitor C1 through a resistor R3.
Further, the second output terminal (pin 3) of the solid-state relay SSR is grounded, and the end of the capacitor C1 far from the resistor R2 is also grounded.
The principle of the invention is as follows:
the transformer T reduces the 200V-380V alternating current into 70V-110V alternating current, and the alternating current passes through the solid state relay SSR to the rectifier bridge D, and the rectifier bridge D is rectified into pulse direct current and is connected to a welding circuit of a welding gun through the resistor R1 and the inductor L1. When the plate is contacted with the stud, the circuit provides arc discharge (arc striking) current, and after the arc striking is successful, the circuit disconnects the SSR, so that the main transformer has smaller power and small volume.
This circuit provides the striking signal through the host computer to when the striking signal comes triode Q1, thereby switch on because the low voltage of electric capacity C1 voltage, make solid state relay SSR switch on, thereby the striking has the electric current to begin the striking, charge to electric capacity C1 when resistance R2, make electric capacity C1 voltage rise, thereby trigger triode Q1 cuts off, the striking is cut off promptly, the delay circuit of this circuit can also replace through singlechip or digital circuit.
The delay time of the delay circuit is the arc striking time, and the arc striking main circuit is turned off after the stud welding arc striking is successful, so that the transformer has current impact only in the moment.
The transformer T1 cannot be burnt out when the stud welding short circuit occurs through the circuit, the inductor L1 filters the direct current, the L has back electromotive force, the spark is larger when the stud arcs, the arc is easier to strike, and the resistor R1 provides the descending characteristic for the circuit to adjust the arc striking current.
It should be noted that the technical features of the stud welding machine, the plate, the solid-state relay, and the like, which are referred to in the present patent application, should be regarded as the prior art, and the specific structure, the operation principle, the control manner and the spatial arrangement manner that may be referred to in the present patent application may be implemented by conventional selection in the art, and should not be regarded as the invention point of the present patent, and the present patent is not further specifically described in detail.
It will be apparent to those skilled in the art that modifications and equivalents may be made in the embodiments and/or portions thereof without departing from the spirit and scope of the present invention.
Claims (5)
1. The utility model provides a stud welding machine striking circuit for stud welding machine striking, its characterized in that includes power supply circuit, rectification filter circuit, solid state relay SSR and delay circuit, wherein:
the power circuit is electrically connected with the rectification filter circuit and the SSR, the first output end of the rectification filter circuit is electrically connected with a welding gun A1 of the stud welding machine, and the second output end of the rectification filter circuit is electrically connected with a plate A2;
the delay circuit is electrically connected with a host of the stud welding machine and is used for receiving arc striking signals output by the host.
2. The arc striking circuit of the stud welding machine as claimed in claim 1, wherein the rectifier filter circuit comprises a rectifier bridge D, a resistor R1 and an inductor L1, a first output end of the rectifier bridge D is electrically connected with a welding gun A1 of the stud welding machine, and a second output end of the rectifier bridge D is electrically connected with a plate A2 through the resistor R1 and the inductor L1 in sequence.
3. The arc striking circuit of the stud welder according to claim 2, wherein the power circuit comprises a transformer T1, a first output terminal of the transformer T1 is electrically connected to a first input terminal of the rectifier bridge D, and a second output terminal of the transformer T1 is electrically connected to a second input terminal of the rectifier bridge D through a solid state relay SSR.
4. The arc striking circuit of the stud welder of claim 3, wherein the delay circuit comprises a transistor Q1, a resistor R2, a capacitor C1 and a resistor R3, wherein:
the collector of the triode Q1 is electrically connected with the first output end of the SSR, the first path of the emitter of the triode Q1 is electrically connected with the negative electrode of an arc striking signal sequentially through a resistor R2 and a capacitor C1, the second path of the emitter of the triode Q1 is electrically connected with the positive electrode of the arc striking signal, and the base of the triode Q1 is electrically connected with the common connection end of the resistor R2 and the capacitor C1 through a resistor R3.
5. The arc striking circuit of the stud welder according to claim 4, wherein the second output terminal of the SSR is grounded, and the end of the capacitor C1 away from the resistor R2 is also grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110780646.6A CN113319400A (en) | 2021-07-10 | 2021-07-10 | Arc striking circuit of stud welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110780646.6A CN113319400A (en) | 2021-07-10 | 2021-07-10 | Arc striking circuit of stud welding machine |
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| Publication Number | Publication Date |
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| CN113319400A true CN113319400A (en) | 2021-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110780646.6A Pending CN113319400A (en) | 2021-07-10 | 2021-07-10 | Arc striking circuit of stud welding machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116727808A (en) * | 2023-05-05 | 2023-09-12 | 佛山市三乔焊接实业有限公司 | Arc striking circuit of stud welding machine |
-
2021
- 2021-07-10 CN CN202110780646.6A patent/CN113319400A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116727808A (en) * | 2023-05-05 | 2023-09-12 | 佛山市三乔焊接实业有限公司 | Arc striking circuit of stud welding machine |
| CN116727808B (en) * | 2023-05-05 | 2024-02-02 | 佛山市三乔焊接实业有限公司 | Arc striking circuit of stud welding machine |
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