Constant-current pilot arc device and cutting machine
A technology of arc-dimensioning device and cutting machine, which is applied in welding equipment, metal processing equipment, plasma welding equipment, etc., can solve the problem of high failure rate of arc-dimensioning current, and achieve the effect of reducing the failure rate
Active Publication Date: 2018-05-15
SHENZHEN JASIC TECH
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Problems solved by technology
[0004]
In view of this, the embodiment of the present invention provides a constant current arc maintenance device and cutting machine to solve the problem of high failure rate in the current on-off process of arc maintenance in the prior art
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[0067] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
[0068] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude one or more other features. , whole, step, operation, element, component and / or the presence or addition of a collection thereof.
[0069] It should also be und...
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The invention is applicable to the technical field of cutting machines, and provides a constant-current pilot arc device and a cutting machine. The constant-current pilot arc device comprises a rectifying module, an isolation driving module, a pilot arc module and a pilot arc line; an output positive electrode of the rectifying module is connected with a collector electrode of the pilot arc moduleand a workpiece of the cutting machine; a grid electrode of the pilot arc module is connected with a first output end of the isolation driving module, an emitting electrode of the pilot arc module isconnected with a second output end of the isolation driving module, and an emitting electrode of the pilot arc module is connected with the pilot arc line; the pilot arc line is suitable for being connected with a cutting gun nozzle of the cutting machine; and an output negative electrode of the rectifying module is suitable for being connected with a cutting gun electrode of the cutting machine.According to the constant-current pilot arc device and the cutting machine, turn-on and turn-off of an insulated grid bipolar transistor in the pilot arc module are utilized, so that the on-off of apilot arc current is controlled, and the fault rate in the on-off process of a pilot arc circuit is greatly reduced.
Description
technical field [0001] The invention belongs to the technical field of cutting machines, and in particular relates to a constant current arc maintenance device and a cutting machine. Background technique [0002] Air plasma cutting technology has comprehensive advantages in cutting quality, cutting speed, operating cost, cutting metal types, etc. It is more and more recognized by the industry, and its popularity in mechanical processing is getting higher and higher. [0003] In the arc-maintaining circuit of traditional air plasma cutting machines, a high-power current-limiting resistor is usually connected in series to adjust the arc-maintaining current after the rectified output, and the failure rate is high in the process of controlling the opening and closing of the arc-maintaining current. Contents of the invention [0004] In view of this, an embodiment of the present invention provides a constant current arc maintenance device and a cutting machine to solve the prob...
Claims
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Login to View More IPC IPC(8): B23K10/00
CPCB23K10/00Y02P70/10
Inventor 肖文成陈刚华
Owner SHENZHEN JASIC TECH