CN104148791A - Arc discharger for plasma cutting machine - Google Patents
Arc discharger for plasma cutting machine Download PDFInfo
- Publication number
- CN104148791A CN104148791A CN201410331240.XA CN201410331240A CN104148791A CN 104148791 A CN104148791 A CN 104148791A CN 201410331240 A CN201410331240 A CN 201410331240A CN 104148791 A CN104148791 A CN 104148791A
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- CN
- China
- Prior art keywords
- hole
- fixed cover
- cutting
- mouth cap
- constant current
- Prior art date
- 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.)
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Classifications
-
- 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
- B23K10/00—Welding or cutting by means of a plasma
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0211—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in cutting
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
- Plasma Technology (AREA)
Abstract
The invention discloses an arc discharger for a plasma cutting machine, in particular to a cutting head device for the plasma cutting machine. The arc discharger comprises a fixing sleeve, a cutting electrode, a flow stabilizing sleeve, a nozzle protecting cap and a cutting nozzle. The upper end of the cutting electrode is provided with a spiral air guide groove. A zirconium-hafnium-tungsten alloy electrode is mounted in the middle of the lower end of the cutting electrode. A positioning plate is disposed at the top end of the cutting nozzle. The middle of the bottom end of the cutting nozzle is provided with a first through hole. The upper end of the nozzle protecting cap is connected with the lower end of the fixing sleeve in a threaded manner. The lower end of the nozzle protecting cap is provided with a third through hole. The middle of the bottom end of the nozzle protecting cap is provided with a second through hole. The inner side of the bottom end of the fixing sleeve is provided with a positioning cone frustum. A first gap is communicated with an accommodating space in the nozzle protecting cap through an air passage. The sidewall of the flow stabilizing sleeve is provided with air guide pores. The lower end of the flow stabilizing sleeve is connected with the positioning cone frustum through the positioning plate. Cuts of plates cut by the plasma cutting machine with the arc discharge are smooth, inclination of the cuts is within three degrees, no medal sag remains on the back of each cut, and the plates need no secondary processing.
Description
Technical field
The present invention relates to a kind of cutter head device of CUT, say that more specifically a kind of CUT goes out arc device.
Background technology
In current sheet material manufacture field, for hard plate material especially steel plate, add man-hour, using the most common cutting machine is CUT, CUT is comprised of seven parts conventionally, i.e. power supply, control system, water-cooling system, gas device, plasma cutter head device, CUT body and processing work platform.Current CUT cutter head device is comprised of plasma cutting gun and injector electrode, when plasma power supply sends starting the arc signal, injector electrode sends electric arc, compressed air heats, decomposes and ionizes in electric arc, the oxygen cutting metal generation exothermic reaction generating, form otch, existing CUT can only carry out roughing to sheet material, not only there is the problem that otch gradient is excessive, edge is more coarse in the workpiece processing, and need to carry out secondary operations to completing the workpiece of cutting, be therefore necessary to improve.
Summary of the invention
The object of the invention is in order to overcome the weak point of background technology, and provide a kind of cost lower, operate and use more conveniently CUT to go out arc device, after the present invention is arranged on CUT, the otch of the workpiece that CUT processes is more smooth, otch perpendicularity is higher, the otch back side is without residue.
To achieve these goals, technical scheme of the present invention is: CUT goes out arc device, it is characterized in that: comprise the fixed cover that upper end is connected with plasma cutting gun, be located at the cutting electrode of fixed cover inside, be sleeved on cutting electrode and be positioned at the constant current cover of fixed cover inside, be located at fixed cover lower end and protect mouth cap for hollow structure, be located at that to protect mouth cap inner and be the cutting head of hollow structure, described cutting electrode is provided with the helical form wind guide tank of rectangular dentation, cutting electrode lower end passes from fixed cover bottom and is positioned at cutting head, middle part, cutting electrode lower end is provided with zirconium hafnium tungsten alloy electrode, cutting head top is provided with location-plate, cutting head center bottom is provided with for spraying the first through hole of plasma fire bundle, protecting mouth cap upper end is threaded with fixed cover lower end, protect mouth cap lower end and be provided with a plurality of arrange uniformly at intervals and for spraying the third through-hole of air, protect mouth cap center bottom and be provided with the second through hole coaxial with fire jetting hole and that restraint for spraying plasma fire, inner side, fixed cover bottom is provided with positioning round table, between the sidewall of fixed cover and constant current set upper side, be provided with the first gap, described the first gap is communicated with the appearance matter space in protecting mouth cap by being located at the air duct of fixed cover lower end, the sidewall of constant current cover is provided with the air-guiding hole that a plurality of intervals are in tilted layout, constant current cover lower end is connected with positioning round table by described location-plate.
In technique scheme, described air duct is the fourth hole of being located at fixed cover lower end, and fourth hole upper end is communicated with described the first gap, and fourth hole lower end is communicated with the appearance matter space in protecting mouth cap.
In technique scheme, described air duct comprises the second gap of being located between fixed cover lower end and constant current cover lower end, on described location-plate and positioning round table, be equipped with a plurality of fifth holes that arrange uniformly at intervals, fifth hole upper end is communicated with the second gap and the first gap successively, and fifth hole lower end is communicated with the appearance matter space in protecting mouth cap.
In technique scheme, the aperture of described fifth hole is 0.5～1mm, and the pitch of holes between adjacent two fifth holes is 1～3mm.
In technique scheme, the distance between described third through-hole and cutting head bottom is 3～4mm, and the aperture of third through-hole is 0.5～1mm, and adjacent pitch of holes of being separated by between third through-hole is 1～3mm.
In technique scheme, the axis of described third through-hole and the angle between horizontal plane are 45～90 °.
In technique scheme, described constant current puts and is covered with air-guiding hole, and the axis of described air-guiding hole and the angle between horizontal plane are 45～75 °, and the aperture of air-guiding hole is 1～1.5mm, and the pitch of holes between adjacent two air-guiding holes is 1～2.5mm.
In technique scheme, described fixed cover, constant current cover, cutting electrode, protect between mouth cap and cutting head and be coaxially arranged.
The dimensional parameters of above-mentioned multiple through hole is to draw through long-term production practices, and when above-mentioned multiple through hole is above-mentioned dimensional parameters, cost of the present invention is lower, security performance is higher, working effect is better.
When the axis of third through-hole and the angle of horizontal plane support are 45～75 °, also can be in the shape of a spiral from the protectiveness air-flow of third through-hole ejection, the protection better effects if of described helical form air-flow to fire bundle.
Operation principle of the present invention is: staff first allows plasma power supply send starting the arc signal, and make compressed air enter in fixed cover and in fixed cover, split into first's compressed air and second portion compressed air, wherein, first's compressed air is entered in constant current cover by air-guiding hole and constant current cover top, entering into first's compressed air in constant current cover can flow through and be located at the helical form wind guide tank of cutting electrode upper end, and under the effect of helical form wind guide tank, form helical form air-flow, helical form air-flow heats up under arcing, decompose, ionization, the final helical form fire bundle that produces high concentration, the air duct that second portion compressed air is flowed through successively and is located at the first gap between fixed cover and constant current cover, is located at fixed cover lower end, and enter in the appearance matter space of protecting in mouth cap, final second portion compressed air spray and forms protectiveness air-flow by being located at the third through-hole that protects mouth cap lower end, and described protectiveness air-flow is restrainted helical form fire to protect in central authorities.
Due to the present invention by cutting head, cutting electrode, constant current cover, fixed cover, protect mouth cap five parts and form, therefore structure of the present invention is more accurate, compact.Due to cutting head, cutting electrode with to protect mouth cap be mainly to be made by red copper, constant current cover and fixed cover are mainly made by industrial ceramic, therefore manufacturing cost of the present invention is lower.When needs are installed on CUT by the present invention, staff only need be placed in the present invention plasma cutting gun lower end, installs simple and without danger.Finally; because CUT goes out fire bundle that arc device gushes out in the shape of a spiral; and fire bundle is high concentration shape; and there is the air-flow of protectiveness to this helical form fire Shu Jinhang protection; therefore in practical work process; cuts sheet material process moderate heat bundle rotating speed can not reduce and the deformation of fire bundle less, sheet material tangent plane that CUT cuts out is more smooth, otch gradient can guarantee three degree with interior, the otch back side is residual without metallic residue, do not need again sheet material to be carried out to secondary operations.
Accompanying drawing explanation
Fig. 1 is that constant current cover does not comprise air-guiding hole, and air duct is while being fourth hole, the syndeton schematic diagram of the present invention and plasma cutting gun.
Fig. 2 is that constant current cover does not comprise air-guiding hole, and air duct is when be comprised of the second gap and fifth hole, the syndeton schematic diagram of the present invention and plasma cutting gun.
Fig. 3 is the structural representation of cutting head.
Fig. 4 is the structural representation of constant current cover.
Fig. 5 is the structural representation of fixed cover.
Fig. 6 is the structural representation that protects mouth cap.
Fig. 7 is the structural representation of cutting electrode.
1-cutting head in figure, 11-location-plate, 2-cutting electrode, 21-helical form wind guide tank, 22-zirconium hafnium tungsten alloy electrode, 23-the first cylinder, 24-the second cylinder, 25-three cylindrical, 3-constant current cover, 31-air-guiding hole, 4-fixed cover, 41-positioning round table, 42-the first gap, 43-the second gap, 5-protects mouth cap, 6-plasma cutting gun, 71-the first through hole, 72-the second through hole, 73-third through-hole, 74-fourth hole, 75-fifth hole, 8-air duct.
The specific embodiment
Below in conjunction with accompanying drawing, describe performance of the present invention in detail, but they do not form limitation of the invention, only for example.By explanation, make advantage of the present invention more know and easily understand simultaneously.
Consult accompanying drawing known: CUT goes out arc device, it is characterized in that: comprise fixed cover 4, the cutting electrode 2 of being located at fixed cover 4 inside that upper end is connected with plasma cutting gun 6, be sleeved on cutting electrode 2 and be positioned at fixed cover 4 inside constant current cover 3, be located at fixed cover 4 lower ends and protecting mouth cap 5, be located at that to protect mouth cap 5 inner and be the cutting head 1 of hollow structure for hollow structure.
Cutting electrode integral body is made with red copper, cutting electrode 2 is provided with the helical form wind guide tank 21 of rectangular dentation, the large footpath 12mm of helical form wind guide tank of the present invention, path 8mm, pitch of thread 2mm, line number is 9, during real work, helical form wind guide tank can also be other dimensional parameters, as long as helical form wind guide tank is rectangular teeth structure.Cutting electrode 2 lower ends pass from fixed cover 4 bottoms and are positioned at cutting head 1, and cutting electrode 2 middle parts, lower end are provided with zirconium hafnium tungsten alloy electrode 22 (content proportioning 1:1:8), and the length of zirconium hafnium tungsten alloy electrode 22 should be not less than 2mm.
Cutting electrode 2 comprise be located at middle part the second cylinder 24, be connected the first cylinder 23 with the second cylinder 24 upper ends, with the three cylindrical 25 being connected with the second cylinder 24 lower ends, helical form wind guide tank 21, the three cylindrical 25 middle parts, lower end that the second cylinder 24 is provided with rectangular dentation are provided with zirconium hafnium tungsten alloy electrode 22.
Preferably, described the first cylinder 23, the second cylinder 24 and the second cylinder 25 are monolithic construction, and the diameter of the second cylinder 24 is greater than the diameter of the first cylinder 23, and the diameter of the first cylinder 23 is identical with the diameter of three cylindrical 25.
Cutting head integral body is made with red copper, and cutting head 1 top is provided with location-plate 11, and cutting head 1 center bottom is provided with for spraying the first through hole 71 of plasma fire bundle.
The whole material of protecting mouth cap 5 is red copper, protecting mouth cap 5 upper ends is threaded with fixed cover 4 lower ends, protecting mouth cap 5 lower ends is provided with and a plurality ofly arranges uniformly at intervals and for spraying the third through-hole 73 of air, protect mouth cap 5 center bottom and be provided with the second through hole 72 coaxial with fire jetting hole and that restraint for spraying plasma fire.
Distance between described third through-hole 73 and cutting head 1 bottom is 3～4mm, and the aperture of third through-hole 73 is 0.5～1mm, and adjacent pitch of holes of being separated by between third through-hole 73 is 1～3mm.The axis of described third through-hole 73 and the angle between horizontal plane are 45～90 °.
The whole material of fixed cover is industrial insulating ceramics, fixed cover 4 inner sides, bottom are provided with positioning round table 41, the sidewall of fixed cover 4 and constant current are overlapped between 3 upper ends and are provided with the first gap 42, and described the first gap 42 is communicated with the appearance matter space in protecting mouth cap 5 by being located at the air duct 8 of fixed cover 4 lower ends.
During actual installation, fixed cover lower end is external screw thread, and protects mouth cap upper end screw-internal thread fit; There is internal thread fixed cover upper end, and internal thread coordinates with plasma cutting gun.
The sidewall of constant current cover 3 is provided with the air-guiding hole 31 that a plurality of intervals are in tilted layout, and constant current is overlapped 3 lower ends and is connected with positioning round table 41 by described location-plate 11.The axis of described air-guiding hole 31 and the angle between horizontal plane are 45～75 °, and the aperture of air-guiding hole is 1～1.5mm, and the pitch of holes between adjacent two air-guiding holes is 1～2.5mm.Preferably, on constant current cover 3, be covered with air-guiding hole 31.
Described air duct 8 can be following two kinds of structures:
A. air duct 8 is for being located at the fourth hole 74 of fixed cover 4 lower ends, and fourth hole 74 upper ends are communicated with described the first gap 42, and fourth hole 74 lower ends are communicated with the appearance matter space in protecting mouth cap 5.
B. air duct 8 comprises and is located at fixed cover 4 lower ends and the second gap 43 between 3 lower ends is overlapped in constant current, on described location-plate 11 and positioning round table 41, be equipped with a plurality of fifth holes 75 that arrange uniformly at intervals, fifth hole 75 upper ends are communicated with the second gap 43 and the first gap 41 successively, and fifth hole 75 lower ends are communicated with the appearance matter space in protecting mouth cap 5.The aperture of described fifth hole 75 is 0.5～1mm, and the pitch of holes between adjacent two fifth holes 75 is 1～3mm.
Described fixed cover 4, constant current cover 3, cutting electrode 2, protect between mouth cap 5 and cutting head 1 and be coaxially arranged.
Operation principle of the present invention is: staff first allows plasma power supply send starting the arc signal, and make compressed air enter in fixed cover 4 and in fixed cover 4, split into first's compressed air and second portion compressed air, wherein, first's compressed air overlaps 3 tops by air-guiding hole 31 and constant current and enters in constant current cover 3, entering into first's compressed air in constant current cover 3 can flow through and be located at the helical form wind guide tank 21 of cutting electrode 2 upper ends, and under the effect of helical form wind guide tank 21, form helical form air-flow, helical form air-flow heats up under arcing, decompose, ionization, the final helical form fire bundle that produces high concentration, the air duct 8 that second portion compressed air is flowed through successively and is located at the first gap 42 between fixed cover 4 and constant current cover 3, is located at fixed cover 4 lower ends, and enter in the appearance matter space of protecting in mouth cap 5, final second portion compressed air spray and forms protectiveness air-flow by being located at the third through-hole 73 that protects mouth cap 5 lower ends, and described protectiveness air-flow is restrainted helical form fire to protect in central authorities.
Other unaccounted part all belongs to prior art.
Claims (8)
1. CUT goes out arc device, it is characterized in that: comprise fixed cover (4) that upper end is connected with plasma cutting gun (6), be located at the inner cutting electrode (2) of fixed cover (4), be sleeved on cutting electrode (2) and go up and be positioned at the inner constant current cover (3) of fixed cover (4), be located at fixed cover (4) lower end and protecting mouth cap (5), be located at and protect mouth cap (5) inside and be the cutting head of hollow structure (1) for hollow structure
Described cutting electrode (2) is provided with the helical form wind guide tank (21) of rectangular dentation, cutting electrode (2) lower end passes from fixed cover (4) bottom and is positioned at cutting head (1), middle part, cutting electrode (2) lower end is provided with zirconium hafnium tungsten alloy electrode (22)
Cutting head (1) top is provided with location-plate (11), cutting head (1) center bottom is provided with for spraying first through hole (71) of plasma fire bundle, protecting mouth cap (5) upper end is threaded with fixed cover (4) lower end, protect mouth cap (5) lower end and be provided with a plurality of arrange uniformly at intervals and for spraying the third through-hole (73) of air, protect mouth cap (5) center bottom and be provided with the second through hole (72) coaxial with the first through hole (71) and that restraint for spraying plasma fire
Inner side, fixed cover (4) bottom is provided with positioning round table (41), between the sidewall of fixed cover (4) and constant current cover (3) upper end, be provided with the first gap (42), described the first gap (42) is communicated with the appearance matter space in protecting mouth cap (5) by being located at the air duct (8) of fixed cover (4) lower end, the sidewall of constant current cover (3) is provided with the air-guiding hole (31) that a plurality of intervals are in tilted layout, and constant current cover (3) lower end is connected with positioning round table (41) by described location-plate (11).
2. CUT according to claim 1 goes out arc device, it is characterized in that: described air duct (8) is for being located at the fourth hole (74) of fixed cover (4) lower end, fourth hole (74) upper end is communicated with described the first gap (42), and fourth hole (74) lower end is communicated with the appearance matter space in protecting mouth cap (5).
3. CUT according to claim 1 goes out arc device, it is characterized in that: described air duct (8) comprises the second gap (43) of being located between fixed cover (4) lower end and constant current cover (3) lower end, on described location-plate (11) and positioning round table (41), be equipped with a plurality of fifth holes (75) that arrange uniformly at intervals, fifth hole (75) upper end is communicated with the second gap (43) and the first gap (41) successively, and fifth hole (75) lower end is communicated with the appearance matter space in protecting mouth cap (5).
4. CUT according to claim 3 goes out arc device, it is characterized in that: the aperture of described fifth hole (75) is 0.5～1mm, and the pitch of holes between adjacent two fifth holes (75) is 1～3mm.
5. according to the CUT described in any one claim in claim 1 to 4, go out arc device, it is characterized in that: described third through-hole (73) and the distance of protecting between mouth cap (5) bottom are 3～4mm, the aperture of third through-hole (73) is 0.5～1mm, and the pitch of holes between the adjacent third through-hole of being separated by (73) is 1～3mm.
6. according to the CUT described in any one claim in claim 1 to 4, go out arc device, it is characterized in that: the axis of described third through-hole (73) and the angle between horizontal plane are 45～90 °.
7. according to the CUT described in any one claim in claim 1 to 4, go out arc device, it is characterized in that: on described constant current cover (3), be covered with air-guiding hole (31), the axis of described air-guiding hole (31) and the angle between horizontal plane are 45～75 °, the aperture of air-guiding hole is 1～1.5mm, and the pitch of holes between adjacent two air-guiding holes is 1～2.5mm.
8. according to the CUT described in any one claim in claim 1 to 4, go out arc device, it is characterized in that: described fixed cover (4), constant current cover (3), cutting electrode (2), protect between mouth cap (5) and cutting head (1) and be coaxially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410331240.XA CN104148791A (en) | 2014-07-11 | 2014-07-11 | Arc discharger for plasma cutting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410331240.XA CN104148791A (en) | 2014-07-11 | 2014-07-11 | Arc discharger for plasma cutting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104148791A true CN104148791A (en) | 2014-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410331240.XA Pending CN104148791A (en) | 2014-07-11 | 2014-07-11 | Arc discharger for plasma cutting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104148791A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1194889A (en) * | 1997-03-14 | 1998-10-07 | 林肯电气公司 | Plasma arc torch |
| US20100155376A1 (en) * | 2008-12-22 | 2010-06-24 | Hypertherm, Inc. | High Quality Hole Cutting Using Variable Shield Gas Compositions |
| CN102407399A (en) * | 2010-07-16 | 2012-04-11 | 海别得公司 | Torch flow regulation using nozzle features |
-
2014
- 2014-07-11 CN CN201410331240.XA patent/CN104148791A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1194889A (en) * | 1997-03-14 | 1998-10-07 | 林肯电气公司 | Plasma arc torch |
| US20100155376A1 (en) * | 2008-12-22 | 2010-06-24 | Hypertherm, Inc. | High Quality Hole Cutting Using Variable Shield Gas Compositions |
| CN102407399A (en) * | 2010-07-16 | 2012-04-11 | 海别得公司 | Torch flow regulation using nozzle features |
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Application publication date: 20141119 |