CN109746557B - Plasma cutting gun arc-maintaining device - Google Patents
Plasma cutting gun arc-maintaining device Download PDFInfo
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- CN109746557B CN109746557B CN201910223895.8A CN201910223895A CN109746557B CN 109746557 B CN109746557 B CN 109746557B CN 201910223895 A CN201910223895 A CN 201910223895A CN 109746557 B CN109746557 B CN 109746557B
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- wire
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- 238000005520 cutting process Methods 0.000 title claims abstract description 129
- 239000002184 metal Substances 0.000 claims abstract description 21
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Abstract
The invention relates to the technical field of plasma cutting, in particular to a plasma cutting gun pilot arc device, which comprises: a plasma cutting gun, a wire feeder, a wire and a wire guide; the plasma cutting gun consists of a power supply, an air supply device and a cutting gun and is used for cutting a workpiece; the wire guide piece is fixed on the cutting gun, and the extension line of the wire outlet of the wire guide piece is intersected with the extension line of the nozzle of the cutting gun; one end of the metal wire penetrates into the wire guide piece, is conveyed by the wire feeder and is input to the nozzle, and the other end of the metal wire is electrically connected with one pole of the power supply. According to the arc maintaining device of the plasma cutting gun, the metal wire is connected with the power supply of the plasma cutting gun to form a new passage, the metal wire is slender and is continuously conveyed through the wire feeder, so that the cutting gun is in an arc maintaining state, and compared with the prior art, the arc maintaining device of the plasma cutting gun has the advantages that less energy is consumed when the metal wire is cut, and the energy utilization rate is improved.
Description
Technical Field
The invention relates to the technical field of plasma cutting, in particular to a plasma cutting gun pilot arc device.
Background
The ionic state is a fourth state in which a substance exists, for example, ice is changed into a liquid state from a solid state along with the temperature rise, then the ice is changed into a gas state by heating, the ice is continuously heated to a certain temperature, and then the ice is changed into a plasma state, electrons with negative charges in the plasma state and ions with positive charges are in an equilibrium state, and the ice can pass through a large current, so that the ice has high energy density and extremely high temperature. The energy density, temperature, running speed and the like of the plasma arc are controlled, and the metal can be cut, welded and sprayed. The plasma arc cutting is to heat the cut metal to a molten state by using a plasma arc, and then blow the molten metal away by using auxiliary gas, so as to achieve the cutting purpose.
In the plasma cutting process, firstly, the high-frequency arc generated by the high-frequency circuit ionizes the gas to generate conductivity, the conductive body can form circuit circulation between the electrode and the nozzle to finally form a plasma arc, the plasma arc is forced to be emitted out through the nozzle by the airflow to form a guide arc, the guide arc is electrically communicated with the workpiece after contacting the workpiece due to the conductivity of the guide arc, and the ionization of the gas is maintained by the energy released by the direct-current arc of the power supply.
However, when a workpiece is cut, the plasma cutting machine is not always required to be in a working state, but because a large amount of electric energy is consumed for arc starting, the energy consumed for stopping and restarting and the energy consumed for enabling the cutting machine to be in a cutting state all the time are overlarge, and therefore, a pilot arc device for reducing the energy consumption under the condition of not stopping is urgently needed.
In view of the above problems, the present inventors have actively studied and innovated based on the practical experience and expertise which are rich for many years in the engineering application of such products, and in combination with the application of the theory, in order to create a plasma cutting gun arc-maintaining device, which is more practical.
Disclosure of Invention
The invention aims to solve the technical problem of providing a plasma cutting gun arc-maintaining device for realizing an arc-maintaining function.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a plasma cutting gun pilot arc apparatus, the apparatus comprising: a plasma cutting gun, a wire feeder, a wire and a wire guide;
the plasma cutting gun consists of a power supply, an air supply device and a cutting gun and is used for cutting a workpiece;
the wire guide piece is fixed on the cutting gun, and the extension line of the wire outlet of the wire guide piece is intersected with the extension line of the nozzle of the cutting gun;
one end of the metal wire penetrates into the wire guide piece, is conveyed by the wire feeder and is input to the nozzle, and the other end of the metal wire is electrically connected with one pole of the power supply.
Further, the wire guide piece is of a tubular structure, and the inner diameter dimensional accuracy of the wire guide piece meets the accuracy requirement of the wire passing through the wire guide piece.
Further, the wire outlet of the wire guide piece is in a conical structure and inclines towards the nozzle.
Further, the device for fixing the guide wire part comprises a cutting torch fixing ring and a guide wire fixing ring, wherein the cutting torch fixing ring is connected with the guide wire fixing ring, at least three threaded holes are uniformly distributed in the radial direction of the cutting torch fixing ring and the guide wire fixing ring, the cutting torch fixing ring is fixed on the outer wall of the cutting torch through fixing screws, and the guide wire part is fixed in the guide wire fixing ring.
Further, the cutting torch fixing ring is rotatably connected with the guide wire fixing ring, and is used for adjusting the distance between the wire outlet of the guide wire piece and the nozzle of the cutting torch, and when a proper angle is reached, the angle of the guide wire fixing ring can be fixed.
Further, the cutting gun also comprises a mechanical arm which is fixedly connected with the cutting gun.
Further, the cutting gun fixing device is further included, one end of the fixing device is fixedly connected with the mechanical arm, and the other end of the fixing device is connected with the cutting gun.
Further, the cutting torch fixing device can be detachably arranged.
Further, the cutting gun fixing device is used for fixing the cutting gun, the cutting gun is fastened through bolts, and the fixing position of the cutting gun can be adjusted through tightening bolts.
Further, the device also comprises a gas supply adjusting device for adjusting the gas supply amount during arc maintenance.
The beneficial effects of the invention are as follows: as can be seen from the above, the plasma cutting gun pilot arc device of the present invention uses the wire feeder and the wire guide to convey the wire to the nozzle of the cutting gun, and the wire is connected with the power supply of the plasma cutting gun to form a new path.
In addition, in the invention, the plasma cutting gun is fixed on the mechanical arm, and the working efficiency of the plasma cutting machine is improved by utilizing the flexible maneuverability of the mechanical arm.
Finally, in the present invention, the air supply adjusting device is used, and the compressed air is properly reduced to spray in the pilot arc state, so that the pilot arc noise of the cutting gun can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic diagram of a plasma cutting gun pilot arc apparatus according to the present invention;
FIG. 2 is a schematic view of the plasma cutting gun arc maintenance device of the present invention in operation;
FIG. 3 is a schematic view of a guide wire fixing device according to the present invention;
FIG. 4 is a schematic view of a partial connection structure between a plasma cutting gun pilot arc device and a mechanical arm according to the present invention;
fig. 5 is a schematic diagram of the overall connection structure of the plasma cutting gun arc-maintaining device and the mechanical arm.
Reference numerals: 1-cutting gun, 2-wire, 3-wire guide, 4-wire guide fixing device, 5-mechanical arm, 6-fixing device, 41-cutting gun fixing ring and 42-wire guide fixing ring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be noted that the directions or positional relationships indicated as being "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are directions or positional relationships based on the drawings are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, or may be internal communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
Referring to fig. 1, there is shown a plasma cutting gun pilot arc apparatus, comprising: a plasma cutting gun, a wire feeder, a metal wire 2 and a wire guide 3;
the plasma cutting gun consists of a power supply, an air supply device and a cutting gun 1 and is used for cutting a workpiece;
the wire guide piece 3 is fixed on the cutting gun 1, the wire guide piece 3 is of a tubular structure, and the dimensional accuracy of the inner diameter of the wire guide piece meets the accuracy requirement of the wire 2 passing through the wire guide piece; and the extension line of the wire outlet of the wire guide piece 3 is intersected with the extension line of the nozzle of the cutting gun 1; the yarn outlet of the yarn guide 3 is in a conical structure and inclines towards the nozzle.
One end of the metal wire 2 penetrates into the wire guide piece 3, is conveyed by the wire feeder and is input to the nozzle, and the other end of the metal wire is electrically connected with one pole of the power supply.
Here, the plasma cutting gun and the wire feeder are both in the prior art, and specific internal structures are not repeated, and the principle is that the plasma arc sprayed out of the gas supply device is contacted with a workpiece to be cut, which is connected with one end of the power supply, by utilizing the conductivity of the plasma arc, so that the current flow is realized. Referring to fig. 2, in the invention, in the working gap of the cutting torch 1, a metal wire is used as a current auxiliary circulation circuit, a plasma arc sprayed out of a nozzle of the cutting torch 1 is contacted with the metal wire 2 conveyed by a wire feeder to form a second path when the cutting is not performed, the arc striking time of the metal wire 2 is about 2 seconds, when the metal wire 2 is melted and sprayed out by the plasma arc, the wire feeder can continuously convey the metal wire 2 into the wire guide 3 as shown by an arrow in fig. 2, thereby ensuring the continuous existence of the plasma arc, and compared with a cut workpiece, the current required for maintaining the plasma arc is smaller, and the energy is saved.
Specifically, referring to fig. 3, the device further comprises a guide wire fixing device 4, which is composed of a cutting torch fixing ring 41 and a guide wire fixing ring 42, wherein the cutting torch fixing ring 41 is connected with the guide wire fixing ring 42, at least three threaded holes are uniformly distributed in the radial direction of the cutting torch fixing ring 41 and the guide wire fixing ring 42, the cutting torch fixing ring 41 is fixed on the outer wall of the cutting torch 1 through fixing screws, and the guide wire 3 is fixed in the guide wire fixing ring 42. The cutting torch fixing ring 41 is used for arranging the cutting torch sleeve into the ring, and then 3 fastening screws are used for pushing the screw against the outer wall of the cutting torch 1 through the threaded holes on the side wall of the cutting torch fixing ring 41, so that the purpose of fixing is achieved. The threaded holes and the screws play a role in adjusting and fixing, and when the position of the cutting gun 1 needs to be adjusted, the screws can be loosened for adjustment.
Further, as shown in fig. 3, the cutting torch fixing ring 41 is rotatably connected with the guide wire fixing ring 42, a protruding groove structure is provided on the cutting torch fixing ring 41, and is rotatably connected with a protruding fixing plate on the guide wire fixing ring 42 through a fastener, for adjusting the distance between the wire outlet of the guide wire 3 and the nozzle of the cutting torch 1, when reaching a proper angle, the angle of the guide wire fixing ring 42 can be fixed, preferably, an anti-slip thread can be provided on the contact surface of the groove structure and the fixing plate, and when the guide wire fixing ring 42 is rotated to a proper angle, the fasteners on two sides of the fastening groove can clamp the fixing plate by using the side plates on two sides of the groove. Similarly, the side wall of the guide wire fixing ring 42 is provided with a threaded hole for fixing or adjusting the guide wire member 3, which will not be described again.
Example two
In this embodiment, the shape and configuration of the cutting torch 1, the wire 2, the wire guide 3 and the wire guide fixing device 4 are the same as those of the first embodiment, and will not be repeated here.
As shown in fig. 4, the cutting gun also comprises a mechanical arm 5 which is fixedly connected with the cutting gun 1 through a cutting gun fixing device 6. The cutting torch fixing device 6 can be detachably arranged, the cutting torch 1 is fixed by the cutting torch fixing device 6 and fastened by bolts, and the fixing position of the cutting torch 1 can be adjusted by tightening bolts.
Here, due to the rapid development of the mechanical arm, the cutting torch 1 is fixed on the mechanical arm 5 through the cutting torch fixing device 6 in the invention, and the working efficiency of the plasma cutting torch is greatly improved by using the flexibility and the high efficiency of the mechanical arm 5.
Specifically, as shown in fig. 5, the cutting torch fixing device 6 comprises an L-shaped plate and a cutting torch hoop, one end of the L-shaped plate is detachably fixed at the rotating head end of the mechanical arm by a screw, the other end of the L-shaped plate is detachably connected with the cutting torch hoop by a screw, the cutting torch hoop is sleeved in the cutting torch 1, and the tightness of the cutting torch fixing device is adjustable, so that the function of adjusting the fixing position of the cutting torch is achieved.
As a preference of the above embodiment, a gas supply adjusting means for adjusting the gas supply amount at the time of pilot arc is further included.
In this embodiment, when the pilot arc period, the required air supply amount can be adjusted according to the situation, specifically, the air supply device can be connected in a solenoid valve mode, and the ventilation amount can be adjusted by adjusting the air pressure through caliber or changing other paths, so that the resources are utilized more reasonably, and the noise is further reduced.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A plasma cutting gun pilot arc apparatus, comprising: a plasma cutting gun, a wire feeder, a metal wire (2) and a wire guide (3);
the plasma cutting gun consists of a power supply, a gas supply device and a cutting gun (1) and is used for cutting a workpiece;
the wire guide piece (3) is fixed on the cutting gun (1), and the extension line of the wire outlet of the wire guide piece (3) is intersected with the extension line of the nozzle of the cutting gun (1);
one end of the metal wire (2) penetrates into the wire guide piece (3), is transmitted by the wire feeder and is input to the nozzle, and the other end of the metal wire is electrically connected with one pole of the power supply;
the wire guide piece (3) is of a tubular structure, and the inner diameter dimensional accuracy of the wire guide piece meets the accuracy requirement of the wire (2) passing through the wire guide piece; the cutting torch comprises a cutting torch body and is characterized by further comprising a guide wire piece fixing device (4), wherein the guide wire piece fixing device (4) consists of a cutting torch fixing ring (41) and a guide wire fixing ring (42), the cutting torch fixing ring (41) is connected with the guide wire fixing ring (42), at least three threaded holes are uniformly distributed in the radial direction of the cutting torch fixing ring (41) and the guide wire fixing ring (42), the cutting torch fixing ring (41) is fixed on the outer wall of the cutting torch (1) through fixing screws, and the guide wire piece (3) is fixed in the guide wire fixing ring (42);
and the device also comprises an air supply adjusting device for adjusting the air supply amount during arc maintenance.
2. Plasma cutting gun pilot arc device according to claim 1, characterized in that the wire outlet of the wire guide (3) is of conical configuration and inclined towards the nozzle.
3. Plasma cutting torch pilot arc device according to claim 1, characterized in that the torch fixing ring (41) is rotatably connected to the wire guide fixing ring (42) for adjusting the distance between the wire outlet of the wire guide (3) and the nozzle of the torch (1), the angle of the wire guide fixing ring (42) being fixable when a suitable angle is reached.
4. The plasma cutting gun pilot arc device according to claim 1, further comprising a mechanical arm (5) fixedly connected with the cutting gun (1).
5. The plasma cutting gun arc maintaining device according to claim 4, further comprising a cutting gun fixing device (6), wherein one end of the cutting gun fixing device (6) is fixedly connected with the mechanical arm, and the other end of the cutting gun fixing device is connected with the cutting gun (1).
6. Plasma cutting torch arc maintaining device according to claim 5, characterized in that the torch fixing means (6) are detachably arranged.
7. The plasma cutting gun arc maintaining device according to claim 5, wherein the cutting gun fixing device (6) is used for fixing the cutting gun (1) through bolt fastening, and the fixing position of the cutting gun (1) can be adjusted through tightening bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910223895.8A CN109746557B (en) | 2019-03-22 | 2019-03-22 | Plasma cutting gun arc-maintaining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910223895.8A CN109746557B (en) | 2019-03-22 | 2019-03-22 | Plasma cutting gun arc-maintaining device |
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| Publication Number | Publication Date |
|---|---|
| CN109746557A CN109746557A (en) | 2019-05-14 |
| CN109746557B true CN109746557B (en) | 2023-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910223895.8A Active CN109746557B (en) | 2019-03-22 | 2019-03-22 | Plasma cutting gun arc-maintaining device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3387110A (en) * | 1962-08-25 | 1968-06-04 | Siemens Ag | Apparatus for uniform feeding of powder into a plasma spray gun |
| EP0573330A1 (en) * | 1992-06-04 | 1993-12-08 | La Soudure Autogene Francaise | Plasma cutting torch |
| US6251336B1 (en) * | 1998-12-10 | 2001-06-26 | Safmatic | Installation for metal cutting provided with a cutting torch and a capacitative sensing probe |
| CN204735837U (en) * | 2015-06-25 | 2015-11-04 | 鞍山新磁电子有限公司 | Plasma line cutting device |
| CN204800187U (en) * | 2015-06-26 | 2015-11-25 | 嘉兴威斯柏自动化科技有限公司 | A two burning torch holders for on cutting machine of longmen |
| CN105149754A (en) * | 2015-08-25 | 2015-12-16 | 嘉兴威斯柏自动化科技有限公司 | Plasma cutting and welding integrated machine |
| CN107000107A (en) * | 2015-01-28 | 2017-08-01 | 本田技研工业株式会社 | Arc-welding apparatus and method |
| CN109093236A (en) * | 2018-11-02 | 2018-12-28 | 上海气焊机厂有限公司 | A kind of method for plasma cutting and plasma cutting machine |
-
2019
- 2019-03-22 CN CN201910223895.8A patent/CN109746557B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3387110A (en) * | 1962-08-25 | 1968-06-04 | Siemens Ag | Apparatus for uniform feeding of powder into a plasma spray gun |
| EP0573330A1 (en) * | 1992-06-04 | 1993-12-08 | La Soudure Autogene Francaise | Plasma cutting torch |
| US6251336B1 (en) * | 1998-12-10 | 2001-06-26 | Safmatic | Installation for metal cutting provided with a cutting torch and a capacitative sensing probe |
| CN107000107A (en) * | 2015-01-28 | 2017-08-01 | 本田技研工业株式会社 | Arc-welding apparatus and method |
| CN204735837U (en) * | 2015-06-25 | 2015-11-04 | 鞍山新磁电子有限公司 | Plasma line cutting device |
| CN204800187U (en) * | 2015-06-26 | 2015-11-25 | 嘉兴威斯柏自动化科技有限公司 | A two burning torch holders for on cutting machine of longmen |
| CN105149754A (en) * | 2015-08-25 | 2015-12-16 | 嘉兴威斯柏自动化科技有限公司 | Plasma cutting and welding integrated machine |
| CN109093236A (en) * | 2018-11-02 | 2018-12-28 | 上海气焊机厂有限公司 | A kind of method for plasma cutting and plasma cutting machine |
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| CN109746557A (en) | 2019-05-14 |
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