CN202846009U - Dustproof plug for direct current (DC) output port of contravariant DC arc welder - Google Patents
Dustproof plug for direct current (DC) output port of contravariant DC arc welder Download PDFInfo
- Publication number
- CN202846009U CN202846009U CN201220433041.6U CN201220433041U CN202846009U CN 202846009 U CN202846009 U CN 202846009U CN 201220433041 U CN201220433041 U CN 201220433041U CN 202846009 U CN202846009 U CN 202846009U
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- CN
- China
- Prior art keywords
- contravariant
- output end
- arc welder
- end mouth
- output port
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a dustproof plug for a direct current (DC) output port of a contravariant DC arc welder and aims to provide the dustproof plug which can prevent the DC output port from being blocked by dust and has the advantages of being convenient to use and simple in structure. The technical scheme is that the dustproof plug for the DC output port of the contravariant DC arc welder is characterized in that the dustproof plug is composed of a knob head and a rod part which are connected into a whole, external threads matched with the DC output port are machined on the rod part, and a knob block is machined on the outer side of the knob head. The knob head and the rod part are made of plastics or iron. The knob head is round, and the diameter of the knob head is larger than the hole diameter of the DC output port. The knob block is bar-shaped or cross-shaped.
Description
Technical field
The utility model relates to a kind of contravariant DC arc welder, specifically a kind of dust plug of the direct current weldingvoltage output port for the contravariant DC arc welder.
Background technology
The contravariant DC arc welder is a kind of common welding equipment, its operation principle is: three-phase main-frequency (50Hz) is exchanged networking voltage, first become direct current through input rectifier rectification and filtering, again by high power switch electronic component (IGCT SCR, transistor GTR, FET MOSFET or IGBT) the alternation switch effect, dc inversion after the rectification is become the midfrequent AC voltage of several kHz~tens kHz, and be down to tens volts of voltages that are suitable for welding through transformer, and then rectification and through reactance filtering output quite stably the direct current welding current (if directly weld with the alternating current after the inversion step-down, because its frequency is high, then induction reactance is large, cause that active power reduces greatly in the welding circuit, therefore, also need again carry out rectification).Its order change can be expressed as simply: industrial frequency AC (through rectifying and wave-filtering) → direct current (through inversion) → midfrequent AC (step-down, rectification, filtering) → direct current; If symbolically is: AC → DC → AC → DC.
The operating frequency of contravariant DC arc welder is high, compares with traditional arc-welding machine to have following characteristics: a. volume is little, quality is light, saves material, and is mobile, easy to carry; B. energy-efficient, efficient can reach 80%-90%, economizes on electricity more than 1/3 than traditional welding machine; C. dynamic characteristic is good, and striking is easy, arc stability, and appearance of weld is attractive in appearance, and it is little to splash; D. the welding parameter auto-adjustment control is convenient, is well suited for automatic welding; But a tractor serves several purposes e..
The working panel of conventional contravariant DC arc welder as shown in Figure 3, this working panel 7 is provided with display screen 6, control handle 5, radiator window 8 and one positive one negative two dc output end mouths 4, the dc output end mouth is positioned at the bottom of working panel; During work, the direct current input lead of welding machine docks with the dc output end mouth and is exportable weldingvoltage, and is easy to use.When welding machine leaves unused, generally can be with the separately rolling of direct current output lead, so just so that the dc output end mouth directly exposes outside (the dc output end mouth is generally red copper or brass is made), become easily infected by dust, especially true in the more factory building of dust and impurity, most of dc output end mouths are to dock by the DC plug of internal thread with electrode holders, ground connection pincers, if dust seriously can stop up internal thread, affect the normal use of electric conductivity and the welding machine of dc output end mouth.
Summary of the invention
The purpose of this utility model is the deficiency that overcomes in the above-mentioned background technology, a kind of dust plug of the dc output end mouth for the contravariant DC arc welder is provided, this dust plug should be able to avoid the dc output end mouth to be stopped up by dust, also should have characteristics easy to use, simple in structure.
The technical solution adopted in the utility model is: a kind of dc output end mouth dust plug of contravariant DC arc welder, it is characterized in that, described dust plug is comprised of the knob head that is connected and bar section, described bar section is shaped with the external screw thread with dc output end mouth coupling, and the outside of knob head is shaped with the knob piece.
Described knob head and bar section adopt plastics or iron work.
Described knob head is rounded, and diameter is greater than the aperture 6-10mm of dc output end mouth.
Described knob piece is bar shaped or cross.
The beneficial effects of the utility model are: the utility model screws in behind the dc output end mouth, and two dc output end mouths are blocked, and can stop dust and impurity enters, and guarantees the cleaning of dc output end mouth; The utility model is relatively simple for structure in addition, very easy to use and screw out after do not affect the normal operation of welding machine, production cost is also lower, has the marketing prospect.
Description of drawings
Fig. 1 is main TV structure schematic diagram of the present utility model.
Fig. 2 is the assembly structure figure of the utility model and dc output end mouth.
Fig. 3 is the structural representation of the working panel of contravariant DC arc welder.
The specific embodiment
Below in conjunction with Figure of description, the utility model is described in further detail, but the utility model is not limited to following examples.
As shown in Figure 1 and Figure 2, a kind of dc output end mouth dust plug of contravariant DC arc welder, it is characterized in that, described dust plug is comprised of the knob head 2 that is connected and bar section 1, described bar section is shaped with the external screw thread with dc output end mouth coupling, and the outside of knob head is shaped with knob piece 3, can clamp the knob piece with hand bar section is screwed in the dc output end mouth, the knob head is lived (the knob head is rounded, and diameter gets final product greater than the aperture 6-10mm of dc output end mouth) with the dc output end lid.Described knob head and bar section can adopt plastics or iron work.Described knob piece is bar shaped or cross.
In fact, the structure of this dust plug and conventional bolt are similar, the bar minister degree of dust plug need not to mate (for the dc output end mouth of minority without female thread structure with the hole depth of dc output end mouth, the screw thread of bar section can omit), as long as can stably screw in the dc output end mouth, and do not deviate to get final product, can save production cost.
Claims (4)
1. the dc output end mouth dust plug of a contravariant DC arc welder, it is characterized in that, described dust plug is comprised of the knob head (2) that is connected and bar section (1), and described bar section is shaped with the external screw thread with dc output end mouth coupling, and the outside of knob head is shaped with knob piece (3).
2. the dc output end mouth dust plug of a kind of contravariant DC arc welder according to claim 1 is characterized in that: described knob head and bar section employing plastics or iron work.
3. the dc output end mouth dust plug of a kind of contravariant DC arc welder according to claim 1 and 2, it is characterized in that: described knob head is rounded, and diameter is greater than the aperture 6-10mm of dc output end mouth.
4. the dc output end mouth dust plug of a kind of contravariant DC arc welder according to claim 3, it is characterized in that: described knob piece is bar shaped or cross.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201220433041.6U CN202846009U (en) | 2012-08-29 | 2012-08-29 | Dustproof plug for direct current (DC) output port of contravariant DC arc welder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201220433041.6U CN202846009U (en) | 2012-08-29 | 2012-08-29 | Dustproof plug for direct current (DC) output port of contravariant DC arc welder |
Publications (1)
Publication Number | Publication Date |
---|---|
CN202846009U true CN202846009U (en) | 2013-04-03 |
Family
ID=47977245
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201220433041.6U Expired - Lifetime CN202846009U (en) | 2012-08-29 | 2012-08-29 | Dustproof plug for direct current (DC) output port of contravariant DC arc welder |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN202846009U (en) |
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2012
- 2012-08-29 CN CN201220433041.6U patent/CN202846009U/en not_active Expired - Lifetime
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CX01 | Expiry of patent term |
Granted publication date: 20130403 |
|
CX01 | Expiry of patent term |