CN211463749U

CN211463749U - Hot coating device

Info

Publication number: CN211463749U
Application number: CN201922120085.8U
Authority: CN
Inventors: 唐亮; 谭思达; 刘文峰; 何奇骏; 张沈佳; 曾建胜; 方志强
Original assignee: GUANGDONG MACHINERY RESEARCH INSTITUTE
Current assignee: Guangdong Machinery Research Institute Co.,Ltd.
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-09-11
Anticipated expiration: 2029-11-29

Abstract

The utility model relates to a hot coating technical field specifically is a hot coating device, hot coating device includes that the work piece snatchs the mechanism, rotary mechanism and fluidized bed, the fluidized bed includes the dust cage, locate the fluidization storehouse in the dust cage, locate the first fluidization board in the fluidization storehouse, first fluidization board divide into fluidization pool and the first chamber of aerifing with the fluidization storehouse from top to bottom, first chamber and the fluidization pool of aerifing is linked together through the micropore on the first fluidization board, fluidization pool top is equipped with the feed inlet, first aerifing the chamber and being equipped with first air inlet, the work piece snatchs the mechanism and can snatch the heated work piece of treating the coating and treat the work piece that the coating position stretches into or shifts out the fluidization pool, rotary mechanism can make work piece and fluidization pool carry out relative rotation. The utility model has the advantages that, the fluidization of hot coating powder is effectual, and the process of immersing of hot coating in-process work piece is comparatively reasonable, can make the work piece fully contact with the hot coating powder of fluidization state, improves the stability of hot coating quality.

Description

Hot coating device

Technical Field

The utility model relates to a hot coating technical field specifically is a hot coating device.

Background

Hot epoxy powder coating of a workpiece (such as a stator or rotor coil) is a common insulation process requiring the following: (1) the workpiece is required to be heated to a specific temperature before coating, and the temperature of the workpiece has influence on the coating effect; (2) the hot coating powder (epoxy powder) needs to be fluidized first (i.e. the hot coating powder is blown by an air flow from a stacked state to a lifted tumbling state, similar to a boiling liquid, hence the name fluidization); (3) when the workpiece is subjected to hot coating, the workpiece needs to be immersed into hot coating powder in a fluidized state and sufficiently contacted with the powder, so that the powder is adsorbed to the outer surface of the workpiece and solidified. It can be seen that the fluidization state of the hot coating powder and the immersion process of the workpiece in the hot coating process play an important role in the coating quality, while the fluidization effect of the hot coating powder of the hot coating device in the prior art is difficult to guarantee, and the immersion process of the workpiece in the hot coating process is manually operated, so that the randomness is large, the immersion process is simple, the appearance of the workpiece is difficult to fully contact with the powder in the fluidization state, and the stability of the hot coating quality is difficult to ensure.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect that exists among the prior art, the utility model aims to provide a hot coating device, its hot fluidization of coating powder is effectual, and the process of immersing of hot coating in-process work piece is comparatively reasonable, can make the work piece fully contact with the hot coating powder of fluidization state, improves the stability of hot coating quality.

The utility model discloses the task is realized through following technical scheme:

a hot coating device comprises a workpiece grabbing mechanism, a rotating mechanism and a fluidized bed, wherein the fluidized bed comprises a dust hood, a fluidizing bin arranged in the dust hood and provided with an upward opening, and a first fluidizing plate horizontally arranged in the fluidizing bin, the first fluidizing plate is of a flat plate structure with a plurality of micropores distributed, the fluidizing bin is divided into a fluidizing pool at the upper part and a first inflating cavity at the lower part by the first fluidizing plate, the first inflating cavity and the fluidizing pool are communicated through the micropores on the first fluidizing plate, a feed inlet for adding hot coating powder into the fluidizing pool is arranged above an upper port of the fluidizing pool, the first inflating cavity is provided with a first air inlet communicated with a compressed air source, air flow in the first inflating cavity can be blown upwards to the fluidizing pool through the micropores on the first fluidizing plate, so that the hot coating powder in the fluidizing pool is in a rolling and lifting state and is filled in the fluidizing pool, the workpiece grabbing mechanism can grab a heated workpiece to be coated and stretch the part of the workpiece to be coated into or out of the fluidizing, the rotating mechanism can enable the workpiece and the fluidizing tank to rotate relatively, so that the hot coating powder in the fluidizing tank can thermally coat the surface of the workpiece.

Preferably, the fluidized bed further comprises a powder pump for conveying the hot coating powder to the fluidized pool, the powder pump comprises a pump body, a powder suction pipe, a powder blowing pipe, a powder storage bin and a second fluidized plate flatly arranged in the powder storage bin, the second fluidized plate is also of a flat plate structure with a plurality of micropores distributed, the powder storage bin is divided into a powder storage area at the upper part and a second air inflation cavity at the lower part by the second fluidized plate, the second air inflation cavity is communicated with the powder storage area through the micropores on the second fluidized plate, the second air inflation cavity is provided with a second air inlet communicated with a compressed air source, air in the second air inflation cavity can be blown upwards to the powder storage area through the micropores on the second fluidized plate, so that the hot coating powder in the powder storage area is in a continuous rolling state, one end of the powder suction pipe and one end of the powder blowing pipe are respectively connected with an inlet and an outlet of the pump body, the other end of the powder suction pipe stretches into the powder storage area, the other end of the powder, the pump body can convey the hot coating powder of the mixed air in the powder storage area into the fluidized pool.

Preferably, the bottom of the dust hood is of an inclined plate structure inclined downwards towards the opening at the upper part of the dust storage area, so that hot coating powder scattered at the bottom of the dust hood can flow into the dust storage area along an inclined plane.

Preferably, the fluidized bed further comprises a vibrator, and the vibrator is fixedly connected with the bottom of the fluidized bin.

Preferably, a surrounding plate is further arranged on the periphery of the fluidization bin, and the surrounding plate and the side wall of the fluidization bin surround to form a ring groove for collecting hot coating powder overflowing from the upper port of the fluidization pool.

Preferably, the thermal coating device further comprises a powder recovery mechanism, the powder recovery mechanism comprises a dust collector, at least one powder suction port arranged on the side wall of the dust collection cover, and a connecting pipe for connecting the powder suction port and the dust collector, and the thermal coating powder floating in the dust collection cover can be recovered to the dust collector through the powder suction port by the powder recovery mechanism.

Preferably, the workpiece grabbing mechanism comprises a lifting mechanism and a clamping jaw mechanism, the rotating mechanism comprises a rotating motor and a rotating seat, the clamping jaw mechanism is rotatably connected with a lifting plate of the lifting mechanism through the rotating seat, the clamping jaw mechanism can be driven by a rotating motor to rotate around the axis of the clamping jaw mechanism, the clamping jaw mechanism comprises two clamping jaws which are oppositely arranged and a clamping jaw driving mechanism used for driving the two clamping jaws to be folded or separated, the clamping jaws comprise positioning jaws used for positioning a workpiece and a supporting plate used for supporting the workpiece, the positioning jaws are provided with V-shaped positioning grooves, when the workpiece is grabbed, the two clamping jaws are involuted under the action of the clamping jaw driving mechanism, a workpiece is centered relative to the center of the clamping jaw mechanism through the V-shaped positioning groove on the positioning jaw, meanwhile, the supporting plate supports the convex steps on the side wall of the workpiece, and the part needing to be immersed into the fluidized tank for thermal coating is left to be exposed.

Preferably, the hot coating device still includes the work piece conveying mechanism who is used for transporting the work piece to or from the work area, work piece conveying mechanism includes delivery track, location frock and can drive the transport actuating mechanism that the location frock removed along delivery track, and the location frock includes four locating component that are diagonal arrangement, and locating component is including the cushion that is used for supporting the work piece and the guide block that is used for leading, and the guide block stacks in the top that corresponds the cushion, and the inboard of guide block is equipped with the direction inclined plane, thereby the cooperation of the direction inclined plane of four guide blocks forms a horn mouth shape and can lead the work piece.

Preferably, the hot coating device further comprises a cold dryer, and the cold dryer is arranged on an air inlet pipeline of the compressed air source, so that the compressed air entering the fluidized bed can be cooled and dried in advance.

Preferably, the thermal coating device further comprises a control device, the control device is connected with and can control the workpiece grabbing mechanism and the rotating mechanism, the thermal coating device further comprises a temperature sensor for monitoring the temperature of the workpiece, the temperature sensor can measure the temperature of the workpiece before and after thermal coating and transmit a temperature signal to the control device, and the control device can analyze the temperature signal and control the thermal coating device to perform an exception handling program (for example, the control alarm device gives an exception alarm or removes an abnormal workpiece) when the temperature is abnormal.

Compared with the prior art, the utility model discloses following beneficial effect has: firstly, when the fluidized bed is in operation, the hot coating powder is continuously added into the fluidized tank, and compressed air is continuously injected into the fluidized tank, so that the hot coating powder in the fluidized tank is in a continuous lifting and rolling state and is filled in the fluidized tank, and the fluidizing effect of the hot coating powder can be effectively improved; the workpiece and the fluidization pool can be driven to rotate relatively through the rotating mechanism, so that the workpiece immersed in the fluidization pool is in contact with the hot coating powder in a rotating state, the surface of the workpiece is in more sufficient contact with the hot coating powder, and the hot coating quality is better; a device for fluidizing the powder in the powder storage bin is also arranged in the powder pump, so that the powder in the powder storage area is sucked by the pump body and conveyed to the fluidizing tank in a fluidized state, and the fluidization effect of the powder in the fluidizing tank is improved; the bottom of the dust collection cover is provided with an inclined plane, so that the hot coating powder scattered at the bottom of the dust collection cover can automatically flow into the powder storage area, and the hot coating powder is convenient to recycle; the vibrator is arranged to drive the fluidization bin and even the dust collection cover to vibrate, so that the fluidization effect in the fluidization pool is improved conveniently, and powder scattered in the dust collection cover is gathered and flows into the powder storage area conveniently; arranging a surrounding plate outside the fluidization bin to enable overflowed powder to gather in the ring groove, so that the powder is convenient to recycle; the powder recovery mechanism is arranged, so that powder overflowing from the fluidization tank and floating can be sucked out and recycled, and the problems of more dust and severe working environment of a hot coating construction area can be effectively solved; the four positioning assemblies of the positioning tool are arranged diagonally, so that a clamping space is convenient to reserve, the guide inclined plane on the guide block can guide the inlet and outlet of a workpiece, the workpiece is convenient to assemble and disassemble, and the cold dryer is arranged, so that compressed air can be cooled and dried, and the hot coating effect is improved; ninthly, a control device is arranged, the operation of the workpiece grabbing mechanism and the rotating mechanism is automatically controlled through a built-in program of the control device, the immersion process of the workpiece is fully automatically completed, the construction program is standard, the consistency of the hot coating process each time is ensured, the coating quality is stable and reliable, and the built-in program can be adjusted as required, so that the immersion depth and the immersion time of the workpiece are adjusted; the temperature sensor is arranged at the red (R) part, the temperature of the workpiece before and after hot coating is monitored, and the coating quality can be effectively prevented from being influenced by abnormal temperature of the workpiece.

The conception, the specific structure and the effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.

Drawings

FIG. 1 is a schematic structural view of a thermal coating apparatus of the present invention;

FIG. 2 is a schematic view showing the structure of a fluidized bed in the thermal coating apparatus of the present invention;

FIG. 3 is a schematic structural view of a workpiece conveying mechanism in the thermal coating apparatus of the present invention;

FIG. 4 is a schematic view of the lifting mechanism of the thermal coating apparatus of the present invention;

fig. 5 is a schematic structural view of a jaw mechanism in the thermal coating apparatus of the present invention.

Wherein: the device comprises a fluidized bed 1, a dust collection cover 11, a fluidizing chamber 12, a fluidizing tank 121, a first inflation cavity 122, a first fluidizing plate 13, a feed inlet 14, a first air inlet 15, a powder pump 16, a pump body 161, a powder suction pipe 162, a powder storage chamber 164, a powder storage area 1641, a second inflation cavity 1642, a second fluidizing plate 165, a second air inlet 166, a surrounding plate 17, a ring groove 171, a dust collector 21, a powder suction port 22, a vibrator 3, a workpiece grabbing mechanism 4, a lifting mechanism 41, a lifting plate 411, a loading plate 412, a clamping jaw 42, a positioning jaw 421, a supporting plate 422, a clamping jaw cylinder 43, a rotating mechanism 5, a rotating motor 51, a rotating seat 52, a workpiece conveying mechanism 6, a conveying rail 61, a positioning tool 62, a cushion block 621, a guide block 622, a driving motor 63, a freeze dryer 7, a control device 8, a temperature sensor 81 and a workpiece 9.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the description of the specific embodiments is intended to be illustrative only and is not intended to be limiting.

When an element is referred to as being "connected" to another element, it can be directly connected to the other element or be indirectly connected to the other element through intervening elements.

As shown in fig. 1-5, a hot coating device comprises a fluidized bed 1, a powder recovery mechanism, a vibrator 3, a workpiece grabbing mechanism 4, a rotating mechanism 5, a workpiece conveying mechanism 6, a cool drying machine 7 and a control device 8, wherein the fluidized bed 1 comprises a dust hood 11, a fluidizing chamber 12 which is arranged in the dust hood 11 and has an upward opening, and a first fluidizing plate 13 which is horizontally arranged in the fluidizing chamber 12, the fluidizing chamber 12 is suspended in the dust hood 11 through a bracket, the vibrator 3 is fixedly connected with the bottom of the fluidizing chamber 12, the first fluidizing plate 13 is of a flat plate structure which is uniformly distributed with micropores, the first fluidizing plate 13 divides the fluidizing chamber 12 into an upper fluidizing chamber 121 and a lower first inflating chamber 122, the first inflating chamber 122 is communicated with the fluidizing chamber 121 through the micropores on the first fluidizing plate 13, a plurality of feed inlets 14 for adding heat coating powder into the fluidizing chamber 121 are arranged above an upper port of the fluidizing chamber 121, the first air charging cavity 122 is provided with a first air inlet 15 communicated with a compressed air source, air flow in the first air charging cavity 122 can be blown upwards to the fluidizing tank 121 through the micropores of the first fluidizing plate 13, so that hot coating powder in the fluidizing tank 121 is in a rolling and lifting state and is filled in the fluidizing tank 121, the workpiece grabbing mechanism 4 can grab a heated workpiece 9 to be coated and stretch or move a part of the workpiece 9 to be coated into or out of the fluidizing tank 121, the rotating mechanism 5 can enable the workpiece 9 and the fluidizing tank 121 to rotate relatively, and hot coating powder in the fluidizing tank 121 can thermally coat the surface of the workpiece 9.

As shown in fig. 2, the fluidized bed 1 further includes a powder pump 16 for delivering the hot coating powder to the fluidizing tank 121, the powder pump 16 includes a pump body 161, a powder suction pipe 162, a powder blowing pipe, a powder storage bin 164, and a second fluidizing plate 165 flatly disposed in the powder storage bin 164, the second fluidizing plate 165 is also a flat plate structure uniformly distributed with micropores, the second fluidizing plate 165 partitions the powder storage bin 164 into an upper powder storage area 1641 and a lower second aeration chamber 1642, the second aeration chamber 1642 and the powder storage area 1641 are communicated through micropores on the second fluidizing plate 165, the second aeration chamber 1642 is provided with a second air inlet 166 communicated with a compressed air source, air in the second aeration chamber 1642 can be blown upward to the powder storage area 1641 through the micropores on the second fluidizing plate 165, so that the hot coating powder in the powder storage area 1641 is in a continuous rolling state, one end of the powder suction pipe 162 and one end of the powder blowing pipe are respectively connected with an inlet and an outlet of the pump body 161, and the other end of the powder suction pipe 162 extends into the powder storage area 1641, the other end of the powder blowing pipe communicates with the feed port 14 (the powder blowing pipe is not shown in the drawing), and the hot coating powder mixed with air in the powder storage area 1641 can be fed into the fluidizing tank 121 by the pump body 161.

As shown in fig. 2, the powder pump 16 is connected to the dust collection cover 11, and the bottom of the dust collection cover 11 is a sloping plate structure sloping obliquely downwards towards the upper opening of the powder storage area 1641, so that the hot coating powder scattered at the bottom of the dust collection cover 11 can flow into the powder storage area 1641 along the sloping surface.

As shown in FIG. 2, a surrounding plate 17 is further provided around the fluidizing chamber 12, and the surrounding plate 17 and the sidewall of the fluidizing chamber 12 surround to form a ring groove 171 for collecting the hot coating powder overflowed from the upper port of the fluidizing tank 121.

As shown in fig. 1 and 2, the powder recovery mechanism includes a dust collector 21, a plurality of powder suction ports 22 provided on a side wall of the dust collection cover 11, and a connection pipe (the connection pipe is not shown in the drawings) connecting the powder suction ports 22 and the dust collector 21, and the powder recovery mechanism can recover the thermally coated powder floating in the dust collection cover 11 to the dust collector 21 through the powder suction ports 22.

As shown in fig. 1, 4 and 5, the workpiece grabbing mechanism 4 includes a lifting mechanism 41 and a clamping jaw mechanism, the rotating mechanism 5 includes a rotating motor 51 and a rotating base 52, the clamping jaw mechanism is rotatably connected to a transverse loading plate 412 fixedly connected to a lifting plate 411 of the lifting mechanism 41 through the rotating base 52 and can be driven by the rotating motor 51 to rotate around its axis, the clamping jaw mechanism includes two clamping jaws 42 arranged oppositely and a clamping jaw cylinder 43 for driving the two clamping jaws 42 to close or separate, the clamping jaw 42 includes a positioning jaw 421 for positioning the workpiece 9 and a supporting plate 422 for supporting the workpiece 9, a V-shaped positioning slot is provided on the positioning jaw 421, when grabbing the workpiece 9, the two clamping jaws 42 are closed under the action of the clamping jaw cylinder 43, the workpiece 9 is centered with respect to the center of the clamping jaw 42 mechanism through the V-shaped positioning slot on the positioning jaw 421, and a convex step on the side wall of the workpiece 9 is supported by the supporting, leaving the portion that needs to be immersed in the fluidization tank 121 for thermal coating exposed.

As shown in fig. 1 and 3, the workpiece conveying mechanism 6 includes a conveying track 61, a positioning tool 62 and a driving motor 63 capable of driving the positioning tool 62 to move along the conveying track 61, the positioning tool 62 includes four positioning assemblies arranged diagonally, each positioning assembly includes a cushion block 621 for supporting the workpiece 9 and a guide block 622 for guiding, the guide block 622 is stacked above the corresponding cushion block 621, a guide inclined plane is arranged on the inner side of the guide block 622, and the guide inclined planes of the four guide blocks 622 are matched to form a bell mouth shape so as to guide the workpiece 9. The workpiece 9 is conveyed to a working station through the workpiece conveying mechanism 6, is grabbed into the fluidization tank 121 through the workpiece grabbing mechanism 4 for thermal coating, and is grabbed onto the workpiece conveying mechanism 6 through the workpiece grabbing mechanism 4 to be transported away after the thermal coating is completed.

The air dryer 7 is arranged on an air inlet pipeline of a compressed air source, so that compressed air entering the fluidized bed 1 can be cooled and dried in advance.

The control device 8 is connected with and can control the operating states of the workpiece grabbing mechanism 4, the rotating mechanism 5 and the workpiece conveying mechanism 6, the thermal coating device further comprises a temperature sensor 81 used for monitoring the temperature of the workpiece 9, the temperature sensor is installed on the positioning tool 62, the temperature sensor 81 can measure the temperature of the workpiece 9 before and after thermal coating and convey a temperature signal to the control device 8, the control device 8 can analyze the temperature signal and can control the thermal coating device to perform an exception handling program (for example, the control alarm device sends an exception alarm or rejects an exception workpiece) when the temperature is abnormal.

The technological method for carrying out hot coating by adopting the hot coating device comprises the following steps:

(1) continuously adding the hot coating powder into the fluidization tank 121 through the feed inlet 14, and continuously injecting compressed air into the first aeration chamber 122, so that the hot coating powder in the fluidization tank 121 is in a continuous uplift and rolling state and fills the fluidization tank 121;

(2) the heated workpiece 9 to be coated is grabbed by the workpiece grabbing mechanism 4 and extends into the fluidizing tank 121, the part to be coated of the workpiece 9 is completely immersed into the hot coating powder in the fluidizing tank 121 in a rolling state, and the workpiece 9 is rotated relative to the fluidizing tank 121 by the rotating mechanism 5, so that the hot coating powder in the fluidizing tank 121 and the surface of the part to be coated of the workpiece 9 are fully thermally coated;

(3) after the workpiece 9 is thermally coated, the thermally coated workpiece 9 is moved out of the fluidizing tank 121 by the workpiece holding mechanism 4.

Compared with the prior art, the utility model discloses following beneficial effect has: firstly, when the device works, the hot coating powder is continuously added into the fluidization tank 121, and the compressed air is continuously injected, so that the hot coating powder in the fluidization tank 121 is in a continuous lifting and rolling state and is filled in the fluidization tank 121, and the fluidization effect of the hot coating powder can be effectively improved; the rotating mechanism 5 can drive the workpiece 9 and the fluidizing tank 121 to rotate relatively, so that the workpiece 9 immersed in the fluidizing tank 121 is contacted with the hot coating powder in a rotating state, the surface of the workpiece 9 is more fully contacted with the hot coating powder, and the hot coating quality is better; thirdly, a device for fluidizing the powder in the powder storage bin 164 is also arranged in the powder pump 16, so that the powder in the powder storage area 1641 is sucked by the pump body 161 and conveyed to the fluidizing tank 121 in a fluidized state, and the improvement of the fluidizing effect of the powder in the fluidizing tank 121 is facilitated; the bottom of the dust collection cover 11 is provided with an inclined surface, so that the hot coating powder scattered at the bottom of the dust collection cover 11 can automatically flow into the powder storage area 1641, and the hot coating powder is convenient to recycle; the vibrator 3 is arranged to drive the fluidization bin 12 and even the dust collection cover 11 to vibrate, so that the fluidization effect in the fluidization tank 121 is improved conveniently, and powder scattered in the dust collection cover 11 is gathered and flows into the powder storage area 1641 conveniently; a coaming plate 17 is arranged outside the fluidization bin 12, so that overflowed powder is gathered in the ring groove, and the powder is convenient to recycle; the powder recovery mechanism is arranged, so that powder overflowing and floating from the fluidization tank 121 can be sucked out and recycled, and the problems of more dust and severe working environment in a hot coating construction area can be effectively solved; eighthly, four positioning assemblies of the positioning tool 62 are arranged diagonally to conveniently reserve a clamping space, a guide inclined plane on the guide block 622 can guide the workpiece 9 to enter and exit, the workpiece 9 can be conveniently assembled and disassembled, and the cold dryer 7 is arranged to cool and dry compressed air and improve the hot coating effect; ninthly, a control device 8 is arranged, the operation of the workpiece grabbing mechanism 4 and the rotating mechanism 5 is automatically controlled through a built-in program of the control device 8, the immersion process of the workpiece 9 is fully automatically completed, the construction program standard ensures that the hot coating process is consistent every time, the coating quality is stable and reliable, and the built-in program can be adjusted as required, so that the immersion depth and the immersion time of the workpiece 9 are adjusted; temperature sensor 81 is arranged at the position in the red (R) part, the temperature of workpiece 9 before and after hot coating is monitored, and the coating quality can be effectively prevented from being influenced by abnormal temperature of workpiece 9.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. The utility model provides a hot coating device, a serial communication port, snatch the mechanism including the work piece, rotary mechanism and fluidized bed, the fluidized bed includes the dust cage, locate in the dust cage and opening fluidization storehouse up, the first fluidization board of fluidization storehouse is located to the tie, first fluidization board is for distributing the flat plate structure that has a plurality of micropores, first fluidization board separates fluidization storehouse into the fluidization pond on upper portion and the first chamber of aerifing of lower part, first chamber and fluidization pond are linked together through the micropore on the first fluidization board, fluidization pond upper end mouth top is equipped with the feed inlet that is used for adding hot coating powder in to the fluidization pond, first aerifys the chamber and is equipped with the first air inlet of intercommunication compressed air source, the air current in the first chamber of aerifing can blow up to the fluidization pond through the micropore of first fluidization board, thereby make the hot coating powder in the fluidization pond be the uplift state of rolling and be full of fluidization pond, the work piece snatchs the mechanism and can snatch the heated work piece of treating that the coating position and stretch into The rotating mechanism can enable the workpiece and the fluidizing tank to rotate relatively, so that the hot coating powder in the fluidizing tank can thermally coat the surface of the workpiece.

2. The thermal coating apparatus according to claim 1, wherein the fluidized bed further comprises a powder pump for delivering the thermal coating powder to the fluidization chamber, the powder pump comprises a pump body, a powder suction pipe, a powder blowing pipe, a powder storage bin and a second fluidization plate flatly disposed in the powder storage bin, the second fluidization plate is also a flat plate structure with a plurality of micropores distributed thereon, the second fluidization plate divides the powder storage bin into an upper powder storage region and a lower second aeration chamber, the second aeration chamber and the powder storage region are communicated through the micropores on the second fluidization plate, the second aeration chamber is provided with a second air inlet communicated with a compressed air source, air in the second aeration chamber can be blown upward to the powder storage region through the micropores on the second fluidization plate, so that the thermal coating powder in the powder storage region is in a continuous rolling state, one end of the powder suction pipe and one end of the powder blowing pipe are respectively connected with an inlet and an outlet of the pump body, the other end of the powder suction pipe extends into the powder storage area, the other end of the powder blowing pipe is communicated with the feed inlet, and hot coating powder of mixed air in the powder storage area can be conveyed into the fluidization pool through the pump body.

3. The thermal coating apparatus of claim 2, wherein the bottom of the dust hood has an inclined plate structure inclined downward toward the upper opening of the dust storage region, so that the thermal coating powder scattered at the bottom of the dust hood can flow into the dust storage region along the inclined surface.

4. The thermal coating apparatus of claim 1, wherein said fluidized bed further comprises a vibrator fixedly attached to a bottom of said fluidization chamber.

5. The thermal coating apparatus of claim 1, wherein said fluidizing chamber is further provided with a surrounding plate surrounding said fluidizing chamber to form a ring groove for collecting hot coating powder overflowing from said upper port of said fluidizing tank.

6. The thermal coating apparatus of claim 1, further comprising a powder recovery mechanism, the powder recovery mechanism comprising a dust collector, at least one powder suction port provided on a side wall of the dust cage, and a connection pipe connecting the powder suction port and the dust collector, the powder recovery mechanism being capable of recovering the thermal coating powder drifting in the dust cage to the dust collector through the powder suction port.

7. The thermal coating apparatus according to claim 1, wherein the workpiece gripping mechanism comprises a lifting mechanism and a clamping jaw mechanism, the rotating mechanism comprises a rotating motor and a rotating base, the clamping jaw mechanism is rotatably connected with a lifting plate of the lifting mechanism through the rotating base and can be driven by the rotating motor to rotate around an axis of the clamping jaw mechanism, the clamping jaw mechanism comprises two clamping jaws arranged oppositely and a clamping jaw driving mechanism for driving the two clamping jaws to be closed or separated, the clamping jaw comprises a positioning jaw for positioning the workpiece and a supporting plate for supporting the workpiece, the positioning jaw is provided with a V-shaped positioning slot, when the workpiece is gripped, the two clamping jaws are closed under the action of the clamping jaw driving mechanism, the workpiece is centered relative to the center of the clamping jaw mechanism through the V-shaped positioning slot on the positioning jaw, and the supporting plate supports the convex steps on the side wall of the workpiece, leaving the portion that needs to be immersed in the fluidized tank for thermal coating exposed.

8. The thermal coating device of claim 1, further comprising a workpiece conveying mechanism for conveying the workpiece to or from the work area, wherein the workpiece conveying mechanism comprises a conveying track, a positioning tool and a conveying driving mechanism capable of driving the positioning tool to move along the conveying track, the positioning tool comprises four positioning assemblies arranged diagonally, each positioning assembly comprises a cushion block for supporting the workpiece and a guide block for guiding, the guide blocks are stacked above the corresponding cushion blocks, guide inclined surfaces are arranged on the inner sides of the guide blocks, and the guide inclined surfaces of the four guide blocks are matched to form a bell-mouth shape so as to guide the workpiece.

9. The hot coating device according to claim 1, further comprising a cool dryer provided on an air intake line of the compressed air source so as to cool and dry the compressed air entering the fluidized bed in advance.

10. The thermal coating apparatus according to claim 1, further comprising a control device connected to and capable of controlling the operating states of the workpiece grasping mechanism and the rotating mechanism, the thermal coating apparatus further comprising a temperature sensor for monitoring a temperature of the workpiece, the temperature sensor being capable of measuring a temperature of the workpiece before and after thermal coating and transmitting a temperature signal to the control device, the control device being capable of analyzing the temperature signal and controlling the thermal coating apparatus to perform an abnormality processing routine when the temperature is abnormal.