CN211860642U - Plasma rotating spray gun - Google Patents

Abstract

The utility model discloses a plasma rotating spray gun, including the rifle body, the electrode, install the rotatable barrel on the rifle body, power unit, the rotatory fixed body of connecting with power unit, power unit drive rotatory fixed body and barrel are rotatory, the rifle is external still to be provided with a sensor, the peripheral circumference of rotatory fixed body evenly is provided with a plurality of permanent magnets, when every permanent magnet is rotatory to sweep the sensor, all can trigger sensor and produce level signal, this patent is mutually supported through the sensor that sets up on the rifle body and a plurality of evenly distributed's that set up in the periphery of rotatory fixed body permanent magnet, whether the effect that whether normal rotation and rotational speed meet the requirements of detecting the spray gun is realized.

Description

Plasma rotating spray gun

Technical Field

The utility model relates to a spray gun technical field especially relates to a plasma rotating spray gun.

Background

The plasma spray gun is used for material surface strengthening and surface modification, so that the surface of a product has the performances of wear resistance, corrosion resistance, high-temperature oxidation resistance, electric insulation, heat insulation, radiation protection, abrasion reduction, sealing and the like, whether the plasma spray gun is uniformly sprayed or not has a great influence on the realization of the performances on the surface of the product, and whether the plasma spray gun is uniformly sprayed or not is characterized in that whether the spray gun can always keep normal rotation or not, the prior art is disclosed in patent CN2018200483265, the plasma spray gun in the prior art does not have a mechanism for detecting the operation speed of a rotating part of the spray gun and whether the plasma spray gun normally rotates or not, and whether the rotation speed meets the requirement or not cannot be detected, so.

Disclosure of Invention

In order to solve the above-mentioned prior art drawback, the utility model provides a rotatory spray gun of plasma, including the rifle body, electrode, install rotatable barrel, power unit on the rifle body and the rotatory fixed body of being connected with power unit, power unit drive rotatory fixed body and barrel are rotatory, and the rifle is external still to be provided with a sensor, and the peripheral circumference of rotatory fixed body evenly is provided with a plurality of permanent magnets, and when every permanent magnet was rotatory to sweep the sensor, all can trigger sensor and produce level signal.

One end of the sensor is also connected with a micro control unit, and the micro control unit is used for processing level signals generated by the sensor.

The micro control unit is a PLC or a microcomputer controller.

The sensor being a Hall sensor

The periphery of the rotary fixing body is provided with three permanent magnets which are uniformly distributed at an angle of 120 degrees.

The power mechanism comprises a motor arranged in the gun body, a synchronizing wheel connected with the motor and a bearing, the rotating and fixing body is arranged on the bearing, the synchronizing wheel is connected with the bearing through a transmission device, the motor drives the synchronizing wheel to rotate, and the synchronizing wheel drives the bearing, the rotating and fixing body and the gun barrel to rotate.

The transmission device is a transmission belt.

The gun body is electrically connected with the rotary fixing body through a conductive carbon brush.

Install electrode, insulating ceramic and the fixed cover of pottery that stretches into in the rifle pipe on rotatory fixed body, insulating ceramic cover is located the electrode is peripheral, and the fixed cover of pottery is located on insulating ceramic, and the fixed cover of pottery cup joints in the rifle pipe, and the barrel head still is provided with a shower nozzle.

The technical effect of this patent lies in: whether the spray gun normally rotates and whether the rotating speed meets the requirements or not are detected by mutually matching a sensor arranged on the gun body and a plurality of permanent magnets which are uniformly distributed and arranged on the periphery of the rotating fixing body.

Drawings

FIG. 1 is a schematic view of the complete installation of the plasma rotating torch of the present invention;

fig. 2 is an exploded view 1 of the plasma rotating torch of the present invention;

fig. 3 is an exploded view of the plasma rotating torch of the present invention, fig. 2;

in the figure, 1 gun body, 11 motor, 12 synchronizing wheel, 13 bearing, 14 rotating fixed body, 141 permanent magnet, 15 transmission device, 16 sensor, 17 conductive carbon brush, 2 gun barrel, 21 electrode, 22 insulating ceramic, 23 ceramic fixed sleeve and 24 spray head.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.

In the description of the present invention, it should be noted that the terms "center, upper, lower, left, right, vertical, horizontal, inner, outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of description, but does not indicate or imply that the device or element 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. Furthermore, the terms first, second, third, and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted, connected" and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the terms in the present invention can be understood in a specific case to those skilled in the art.

Referring to fig. 1-3, a plasma rotating spray gun includes a gun body 1, an electrode 21, a rotatable barrel 2 mounted on the gun body 1, a power mechanism, and a rotating fixing body 14 connected to the power mechanism, wherein the power mechanism drives the rotating fixing body 14 and the barrel 2 to rotate, a sensor 16 is further disposed outside the gun body, a plurality of permanent magnets 141 are uniformly disposed on the periphery of the rotating fixing body 14, and when each permanent magnet 141 rotates to sweep over the sensor 16, the sensor 16 is triggered to generate a level signal. The technical problem that this scheme can specifically solve is: 1. a fault caused by the spray gun stopping rotating due to the motor damage is detected. 2. And detecting faults caused by the fact that the motor drives the belt of the driving wheel to break and the spray gun stops rotating. 3. And detecting faults caused by that the bearing at the rotating part of the spray gun is damaged and clamped, and the spray gun stops rotating. 4. A malfunction caused by an abnormality in the rotational speed due to an abnormality in the rotation transmitting portion is detected.

The operation principle of the technical scheme is as follows: the permanent magnets 141 are uniformly arranged on the periphery of the rotating and fixing body 14, that is, the lengths of arcs between adjacent permanent magnets 141 are the same, and when the spray gun rotating and fixing body 14 rotates normally at a constant speed, the time intervals T between adjacent permanent magnets 141 successively scanning the sensor 16 are the same (here, T represents the time interval, that is, the time interval from the previous permanent magnet 141 scanning the sensor 16 to the next permanent magnet 141 scanning the sensor 16), and in a normal condition, the value of T is basically fixed or only slightly fluctuates, and if the value of T changes obviously in the process of operating the spray gun, the rotating speed of the spray gun changes obviously, and does not rotate at a constant speed any more, so that the normal spraying process is affected, and the products are difficult to be sprayed uniformly. The scheme detects whether the spray gun normally rotates and whether the rotating speed meets the requirement through the structural design and the principle.

One end of the sensor is also connected to a micro control unit for processing the level signal generated by the sensor 16. In this embodiment, when the adjacent sensors 141 sweep the sensor 16 successively, the time interval T is transmitted to the micro control unit through the level signal, and the micro control unit monitors whether the value of T changes, so as to detect whether the rotation speed of the spray gun changes.

Preferably, the micro control unit is a PLC or a microcomputer controller.

Preferably, the sensor 16 of this patent is hall sensor, and hall sensor has to magnetic field sensitivity, simple structure, small, frequency response is wide, output voltage changes advantages such as big and long service life greatly, consequently, uses hall sensor in this patent, not only can save space, makes the spray gun lighter, can also prolong the life of spray gun.

The power mechanism comprises a motor 11 arranged in the gun body 1, a synchronizing wheel 12 connected with the motor 11 and a bearing 13, a rotary fixing body 14 is arranged on the bearing 13, the synchronizing wheel 12 is connected with the bearing 13 through a transmission device 15, the motor 11 drives the synchronizing wheel 12 to rotate, and the synchronizing wheel 12 drives the bearing 13, the rotary fixing body 14 and the gun barrel 2 to rotate.

Preferably, the transmission device 15 is a transmission belt, the synchronizing wheel and the bearing are separated, the size is large, the dynamic balance is poor, the synchronizing wheel and the bearing are integrally operated through the transmission belt, the size is small, and the dynamic balance is good.

Preferably, the gun body 1 is electrically connected to the rotation fixing body 14 through a conductive carbon brush 17,

preferably, the rotating stationary body 14 is provided with three permanent magnets 131 at the peripheral circumference, and the three permanent magnets are uniformly distributed at 120 ° at the peripheral circumference of the rotating stationary body 14. In this scheme, also can be according to the difference of spraying product, the rotational speed of adjustment spray gun, further adjust the quantity of permanent magnet 131 according to the rotational speed again, and this patent is rotatory fixed body 14 periphery and is not limited to only setting up three permanent magnet promptly.

Furthermore, an electrode 21, an insulating ceramic 22 and a ceramic fixing sleeve 23 extending into the gun tube are mounted on the rotary fixing body 14, the insulating ceramic 22 is sleeved on the periphery of the electrode 21, the ceramic fixing sleeve 23 is sleeved on the insulating ceramic 22, the ceramic fixing sleeve 23 is sleeved in the gun tube 2, and the head of the gun tube 2 is further provided with a spray head 24. When the plasma jet gun is used, the motor 11 is started, the motor 11 rotates to drive the front end synchronizing wheel 12 to rotate, the synchronizing wheel 12 rotates to drive the rotary fixing body 14 to rotate through the bearing 13, so that the electrode 21, the insulating ceramic 22, the ceramic fixing sleeve 23, the gun barrel 2 and the nozzle 24 are driven to rotate, plasma flow reaches the nozzle through the inner cavities of the bearing 13, the insulating ceramic 22 and the gun barrel 2, and plasma jet is achieved.

The above-mentioned embodiments only express some embodiments of the present patent, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present patent. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the patent concept, which falls within the scope of protection of the patent. Therefore, the protection scope of this patent shall be subject to the appended claims.

Claims (9)

1. The utility model provides a plasma rotating spray gun, includes the rifle body, the electrode, installs rotatable barrel, power unit on the rifle body and the rotatory fixed body of being connected with power unit, power unit drive rotatory fixed body and barrel are rotatory, its characterized in that, still be provided with a sensor outside the rifle body, the peripheral circumference of rotatory fixed body evenly is provided with a plurality of permanent magnets, and when every permanent magnet rotation sweeps the sensor, all can trigger the sensor and produce level signal.

2. The plasma spin gun of claim 1, wherein the sensor is further connected at one end to a micro control unit for processing the level signal generated by the sensor.

3. The plasma spin gun of claim 2, wherein the micro control unit is a PLC or a microcomputer controller.

4. The plasma spin gun of claim 1, wherein the sensor is a hall sensor.

5. The plasma rotary torch according to claim 1, wherein the rotary stationary body is provided with three permanent magnets on the outer circumference thereof, and is uniformly distributed at 120 ° on the outer circumference of the bearing.

6. The plasma rotary torch according to claim 1, wherein the power mechanism comprises a motor disposed in the torch body, a synchronizing wheel connected to the motor, and a bearing, the rotation-fixing body is mounted on the bearing, the synchronizing wheel is connected to the bearing through a transmission device, the motor drives the synchronizing wheel to rotate, and the synchronizing wheel drives the bearing, the rotation-fixing body, and the torch to rotate.

7. The plasma spin gun of claim 6, wherein said transmission is a drive belt.

8. The plasma spin gun of claim 1 wherein the gun body is electrically connected to the spin holder by a conductive carbon brush.

9. The plasma spray gun as claimed in claim 1, wherein an electrode, an insulating ceramic and a ceramic fixing sleeve are installed on said rotating fixing body and extend into the gun barrel, said insulating ceramic is sleeved on the periphery of said electrode, said ceramic fixing sleeve is sleeved on the insulating ceramic, said ceramic fixing sleeve is sleeved in the gun barrel, and a nozzle is further installed on the head of said gun barrel.

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