CN212370469U - Plane thermal spraying device - Google Patents

Abstract

The utility model relates to the technical field of thermal spraying equipment, and provides a plane thermal spraying device, which comprises a box body and a thermal spraying mechanism; the box body is provided with an inner cavity with an opening at the bottom, and the box body is provided with a box air suction hole communicated with the inner cavity; the thermal spraying mechanism comprises a mounting frame arranged on the box body, and a wire feeding assembly, a thermal spraying nozzle and a dust hood which are supported on the mounting frame; the dust hood is arranged in the inner cavity and located below the wire feeding assembly, the dust hood is provided with a spraying cavity, the thermal spraying nozzle is located in the spraying cavity, and the bottom of the dust hood is provided with a thermal spraying port corresponding to the thermal spraying nozzle; the dust removing cover is provided with a cover air suction hole, and the cover air suction hole, the spraying cavity and the thermal spraying port are communicated in sequence. Compared with the prior art, the utility model provides a plane hot spraying device adopts two dust removal structures in dust excluding hood and dust removal chamber, can take out the dust in the box effectively in order to reduce the interior dust concentration of box, has greatly improved dust removal effect.

Description

Plane thermal spraying device

Technical Field

The utility model belongs to the technical field of the technique of hot spraying equipment and specifically relates to a plane hot spraying device is related to.

Background

Thermal spraying is a surface strengthening technology, and is an important component of surface engineering technology, and uses electric arc, plasma spraying or combustion flame as heat source to heat powdered or filiform metal or non-metal material to molten or semi-molten state, and then sprays it onto the surface of workpiece at high speed, so as to form a coating with one or several properties of wear resistance, corrosion resistance, oxidation resistance and heat resistance on the surface of workpiece.

At present, when carrying out hot spraying to the product, generally adopt manual mode to carry out hot spraying operation, when hot spraying operation, can produce a large amount of dust, to the produced dust of hot spraying, the tradition mode adopts air extraction equipment to remove dust convulsions, however, single convulsions dust removal mode, the dust removal effect is unsatisfactory, is difficult to reduce dust concentration.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a plane hot spraying device to the dust removal effect that exists among the solution prior art is unsatisfactory, is difficult to reduce dust concentration's technical problem.

In order to achieve the above object, the utility model adopts the following technical scheme: there is provided a planar thermal spray coating device comprising:

the box body is provided with an inner cavity with an opening at the bottom, and the box body is provided with a box air suction hole communicated with the inner cavity; and

the thermal spraying mechanism comprises a mounting frame arranged on the box body, and a wire feeding assembly, a thermal spraying nozzle and a dust hood which are supported on the mounting frame;

the dust hood is arranged in the inner cavity and located below the wire feeding assembly, the dust hood is provided with a spraying cavity, the thermal spraying nozzle is located in the spraying cavity, and the bottom of the dust hood is provided with a thermal spraying port corresponding to the thermal spraying nozzle; the dust removing cover is provided with a cover air suction hole, and the cover air suction hole, the spraying cavity and the thermal spraying port are communicated in sequence.

Furthermore, at least one partition board is arranged in the box body, the inner cavity is divided into a working cavity and at least one dust removing cavity by the at least one partition board, the thermal spraying mechanism is arranged in the working cavity, and box air suction holes are formed in the side wall of the dust removing cavity of the box body.

Furthermore, the number of the partition plates is two, and the two partition plates divide the inner cavity into two dust removing cavities and one working cavity between the two dust removing cavities.

Further, the mounting bracket includes spraying support and the lower spraying support of being connected with last spraying support, goes up spraying support setting on the box, and hot spraying nozzle and dust excluding hood are fixed with spraying support connection down respectively.

Furthermore, a through opening communicated with the inner cavity is formed in the top of the box body, the upper spraying support is arranged in the through opening of the box body in a sliding mode, and an organ cover assembly is arranged between the upper spraying support and the box body to close the through opening.

Furthermore, the lower spraying support is arranged on the upper spraying support in a lifting and adjusting manner.

Further, the wire feeding assembly comprises a wire disc, a roller seat, a wire feeding roller which is rotatably arranged on the roller seat and a roller driving piece which enables the wire feeding roller to rotate, the wire disc is arranged on the upper spraying bracket, and the roller seat is supported on the lower spraying bracket.

Further, the dust hood comprises a first hood body and a second hood body connected with the first hood body; the thermal spray nozzle has a circular cross section, and the first cover body and the second cover body are symmetrically arranged in the axial direction of the thermal spray nozzle.

Furthermore, the first cover body and the second cover body are both provided with cover air exhaust holes.

Further, the thermal spray nozzle is a plasma nozzle.

Compared with the prior art, the plane thermal spraying device provided by the utility model comprises a box body and a thermal spraying mechanism, wherein the box body is provided with an inner cavity, and a box air suction hole communicated with the inner cavity is arranged on the box body; hot spraying mechanism includes the mounting bracket and supports send a subassembly, hot spraying nozzle and dust excluding hood on the mounting bracket, and the dust excluding hood has the spray chamber, and hot spraying nozzle is located the spray chamber, and the hot spraying mouth that corresponds with hot spraying nozzle is seted up to the bottom of dust excluding hood, has seted up cover induced draft hole on the dust excluding hood, covers the induced draft hole, spouts chamber, hot spraying mouth and communicates according to the preface.

The utility model provides a plane hot spraying device's beneficial effect lies in: compared with the prior art, the utility model discloses a two dust removal structures in dust excluding hood and dust removal chamber, the box can be taken out with a large amount of dust that produce during hot spraying to the dust excluding hood, and from the dust of the outflow all around of dust excluding hood, can take the box out by the dust removal chamber to the dust in the box is taken out effectively in order to reduce the interior dust concentration of box, has greatly improved dust removal effect.

Drawings

Fig. 1 is a schematic perspective view of a flat product thermal spray apparatus provided by an embodiment of the present invention;

fig. 2 is a first perspective view of a planar thermal spray apparatus according to an embodiment of the present invention;

fig. 3 is a second schematic perspective view of a planar thermal spray apparatus according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along the plane A-A in FIG. 2;

fig. 5 is an exploded schematic view of a planar thermal spray apparatus provided by an embodiment of the present invention;

fig. 6 is a schematic perspective view of a multi-axis robot and a planar thermal spray device hiding a bellows cover assembly in accordance with an embodiment of the present invention;

fig. 7 is a first perspective view of a thermal spray mechanism according to an embodiment of the present invention;

fig. 8 is an exploded view of a thermal spray mechanism provided by an embodiment of the present invention;

fig. 9 is a second perspective view of a thermal spray mechanism according to an embodiment of the present invention.

Description of the main elements

1000-flat product thermal spray equipment; 10-products; 100-a frame; 200-a conveying device; 210-a conveyor belt; 220-a transport drive assembly; 300-planar thermal spray devices; 310-a box body; 311-lumen; 312-through hole; 313-box ventilation holes; 314-a separation plate; 315-a working chamber; 316-a dust removal chamber; 317-a via hole; 320-a thermal spray mechanism; 321-a mounting rack; 3211-spraying a support; 3213-spraying sliding plate; 3214-supporting table; 3215-a guide rod; 3216-enclosing frame; 3213 a-a wire feed inlet; 3212-spraying the support below; 3217-a lifter plate; 3218-lifting guide rod; 3219-connecting plate; 322-a wire feed assembly; 3221-silk disc; 3222-roller seat; 3223-a wire feed roller; 3224-a roller drive; 3225-wire feeding angle control block; 323-thermal spray nozzle; 324-a dust hood; 3241-spray chamber; 3242-thermal spray nozzle; 3243-hood ventilation holes; 3244-hood head; 3245 covering the feet; 3246-cover body part; 324 a-a first enclosure; 324 b-a second enclosure; 330-organ cover assembly; 331-organ cover; 332-a patch cover; 333-cover fixing piece; 341-sliding rail; 342-a slider; 343-a connector; 400-a translation drive; 410-a carriage drive; 411-the main synchronizing wheel; 412-slave synchronizing wheel; 413-synchronous belt; 414-a clamping plate; 415-a motor drive assembly; 420-a multi-axis robot; 421-connecting arm; 422-connecting part.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It is to be understood that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.

In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description is provided for the implementation of the present invention with reference to the specific drawings.

For convenience of description, the terms "upper" and "lower" are used in the same direction as the upper and lower directions of the drawings, but do not limit the structure of the present invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one.

As shown in fig. 1 to 9, the present embodiment provides a planar thermal spraying apparatus 300 including a tank 310 and a thermal spraying mechanism 320; the box body 310 is provided with an inner cavity 311 with an opening at the bottom, and the box body 310 is provided with a box air suction hole 313 communicated with the inner cavity 311; the thermal spraying mechanism 320 comprises a mounting frame 321 arranged on the box body 310, and a wire feeding assembly 322, a thermal spraying nozzle 323 and a dust hood 324 which are supported on the mounting frame 321; the dust hood 324 is arranged in the inner cavity 311 and below the wire feeding assembly 322, the dust hood 324 is provided with a spray cavity 3241, the thermal spray nozzle 323 is positioned in the spray cavity 3241, and the bottom of the dust hood 324 is provided with a thermal spray port 3242 corresponding to the thermal spray nozzle 323; the dust hood 324 is provided with a hood exhaust hole 3243, and the hood exhaust hole 3243, the spray cavity 3241 and the thermal spray port 3242 are communicated in sequence.

The plane thermal spraying device 300 comprises a box body 310 and a thermal spraying mechanism 320, wherein the box body 310 is provided with an inner cavity 311, and the box body 310 is provided with a box air suction hole communicated with the inner cavity 311; the thermal spraying mechanism 320 comprises an installation frame 321 and a wire feeding assembly 322 supported on the installation frame 321, a thermal spraying nozzle 323 and a dust hood 324, the dust hood 324 is provided with a spraying cavity 3241, the thermal spraying nozzle 323 is positioned in the spraying cavity 3241, a thermal spraying port 3242 corresponding to the thermal spraying nozzle 323 is formed in the bottom of the dust hood 324, a hood exhaust hole 3243 is formed in the dust hood 324, the hood exhaust hole 3243, the spraying cavity 3241 and the thermal spraying port 3242 are communicated in sequence, and therefore through the design of the two dust removing structures of the dust hood 324 and the dust removing cavity 316, the dust hood 324 can extract a large amount of dust generated during thermal spraying out of the box body 310, and dust flowing out of the periphery of the dust hood 324 can be extracted out of the box body 310 through the dust removing cavity 316, the dust in the box body 310 is effectively extracted to reduce the dust concentration in the box.

Referring to fig. 1, the thermal spraying apparatus 1000 for a flat product according to the present embodiment includes a frame 100, a conveying device 200, and a flat thermal spraying device 300, where the conveying device 200 and the flat thermal spraying device 300 are supported on the frame 100 and supported by the frame 100, and the thermal spraying apparatus 1000 for a flat product can achieve automatic thermal spraying of the surface of the product 10 only by manual feeding and discharging, and has high spraying efficiency and low production cost.

Referring to fig. 1, the gantry 100 has an X-axis direction (illustrating the X-axis direction), a Y-axis direction (illustrating the Y-axis direction), and a Z-axis direction (illustrating the Z-axis direction) perpendicular to each other. The conveying device 200 is used for placing the products 10, in this embodiment, the conveying device 200 includes a conveying belt 210 and a conveying driving assembly 220 for rotating the conveying belt 210, the conveying driving assembly 220 is, but not limited to, a motor assembly, the products 10 are placed on the conveying belt 210 in a manner that the surfaces to be painted of the products are upward, and the products 10 are moved in a direction parallel to the X-axis direction under the driving of the conveying driving assembly 220. Specifically, the frame 100 is provided with a sensor (not shown), and when the product 10 is sent to the planar thermal spraying apparatus 300, the planar thermal spraying apparatus 300 performs a thermal spraying operation on the surface of the product 10 after the sensor senses the product, so as to perform an uninterrupted spraying operation.

Referring to fig. 1 and 2, the planar thermal spraying apparatus 300 of the present embodiment includes a housing 310 disposed above the conveyor 200, a thermal spraying mechanism 320 for spraying the surface of the product 10, and a translation driving apparatus 400.

Referring to fig. 2 to 6, the box body 310 of the present embodiment is substantially rectangular, and has an inner cavity 311 with an open bottom, the box body 310 is provided with a box suction hole 313 communicated with the inner cavity 311, in the present embodiment, the box body 310 is erected on the rack 100, the box body 310 can be fixedly connected to the rack 100 by any existing fixing method such as screws and welding, the box suction hole 313 is disposed on a sidewall of the box body 310, the box body 310 is connected to an external dust removing device (not shown) by a suction pipe (not shown), and the suction pipe is hermetically attached to the box suction hole 313 of the box body 310, so that the gas in the box body 310 is sucked by the dust removing device and the suction pipe, thereby reducing the dust concentration in the box body 310.

Referring to fig. 2 to 6, in the present embodiment, a partition plate 314 is disposed in the box body 310, the partition plate 314 divides the inner cavity 311 into a working cavity 315 and a dust removing cavity 316, in the present embodiment, the number of the partition plates 314 is, but is not limited to, two, the two partition plates 314 divide the inner cavity 311 into two dust removing cavities 316 and one working cavity 315 between the two dust removing cavities 316, the thermal spraying mechanism 320 is disposed in the working cavity 315, and a box exhaust hole 313 is disposed on a side wall of each dust removing cavity 316 of the box body 310. It should be noted that, in the direction parallel to the Z-axis direction, the bottom surface of the partition plate 314 is higher than the bottom surface of the side wall of the box 310, during the thermal spraying operation, the dust removal cavity 316 is extracted by the dust removal device, the gas in the working cavity 315 is extracted into the dust removal cavity 316 from the bottom end of the partition plate 314, the dust generated by the working cavity 315 flows to the dust removal cavity 316 along with the airflow and is extracted, and two dust removal cavities 316 are arranged in the box 310 and located on two sides of the working cavity 315, so that the dust removal effect is improved, the dust concentration can be effectively reduced, and the operation safety is improved.

Referring to fig. 2 to 6, in the case 310 of the embodiment, the top of the case is provided with a through hole 312 communicated with the inner cavity 311, an organ cover assembly 330 is disposed between the thermal spraying mechanism 320 and the case 310 to close the through hole 312, and the organ cover assembly 330 can effectively prevent dust from overflowing the case 310, and it is worth mentioning that when the dust removing device performs air suction on the case 310, a gap between the bottom end of the side wall of the case 310 and the rack 100, a gap between the case 310 and the organ cover assembly 330, and a gap between the thermal spraying mechanism 320 and the organ cover assembly 330 can all be used as an air inlet of the case 310, so that when the case 310 is subjected to dust removal air suction, gas with dust in the case 310 is drawn out of the case 310, and external gas enters the case 310 from the gap.

Referring to fig. 2 to 9, the thermal spray mechanism 320 of the present embodiment includes a mounting bracket 321, a wire feed assembly 322, a thermal spray nozzle 323, and a dust hood 324, and the wire feed assembly 322, the thermal spray nozzle 323, and the dust hood 324 are mounted on the mounting bracket 321 and supported by the mounting bracket 321.

As can be seen from fig. 3 and 5, in the present embodiment, the through hole 312 extends from one side edge of the top surface of the box body 310 to the other side edge of the top surface along the direction parallel to the Y-axis direction, the mounting frame 321 is slidably disposed at the through hole 312 of the box body 310, the number of the organ cover assemblies 330 is, but not limited to, two, one organ cover assembly 330 is disposed between each side of the mounting frame 321 and the box body 310, each organ cover assembly 330 includes an organ cover 331 which is retractable in the direction parallel to the Y-axis direction, one end of the organ cover 331 is connected and fixed to the mounting frame 321 through one of the two cover adapter pieces 332 and one of the two cover fixing pieces 333 in sequence, and the other end of the organ cover 331 is connected and fixed to the case 310 through the other of the two cover adapter pieces 332 and the other of the two cover fixing pieces 333 in sequence.

In another embodiment, the mounting frame 321 is fixedly connected to the box 310, and the conveying device 200 is provided with a moving component for moving the product 10 in a direction parallel to the Y-axis direction.

Referring to fig. 3, 4 and 6, the translation driving device 400 of this embodiment is used to drive the mounting rack 321 to move relative to the box 310 in a direction parallel to the Y-axis direction, the mounting rack 321 includes an upper spraying bracket 3211 and a lower spraying bracket 3212 connected to the upper spraying bracket 3211, the upper spraying bracket 3211 is disposed on the box 310, in this embodiment, the upper spraying bracket 3211 is slidably disposed in the through opening 312 of the box 310, the top of the box 310 is provided with a sliding rail 341 extending in the direction parallel to the Y-axis direction, the upper spraying bracket 3211 is disposed on the sliding rail 341 through a sliding block 342, the organ cover assembly 330 is connected between the upper spraying bracket 3211 and the box 310, and the translation driving device 400 is connected to the upper spraying bracket 3211. The lower spraying support 3212 is located below the upper spraying support 3211 and disposed in the working chamber 315 of the inner chamber 311, the lower spraying support 3212 is disposed on the upper spraying support 3211 in a liftable and adjustable manner, and the lower spraying support 3212 moves up and down relative to the upper spraying support 3211 in a manual manner and is maintained at a preset height by fasteners (not shown) such as nuts and bolts after moving to the preset height.

In yet another embodiment, the lower and upper spraying brackets 3211 and 3212 are fixedly coupled to each other, and the conveying device 200 is provided with a moving assembly for moving the product 10 in a direction parallel to the Z-axis.

Referring to fig. 3, 4 and 6, the translation driving device 400 of the present embodiment may be the support driving device 410, or may be a multi-axis robot 420, in the present embodiment, the translation driving device 400 includes the support driving device 410 and the multi-axis robot 420, and one of them may be selected according to actual requirements. The bracket driving device 410 comprises a main synchronizing wheel 411, a slave synchronizing wheel 412, a timing belt 413 wrapped between the main synchronizing wheel 411 and the slave synchronizing wheel 412, a clamping plate 414 clamped and fixed on the timing belt 413, and a motor driving assembly 415 for enabling the main synchronizing wheel 411 to rotate, wherein the main synchronizing wheel 411, the slave synchronizing wheel 412 and the motor driving assembly 415 are supported on the box body 310, and the clamping plate 414 is fixedly connected with the upper spraying bracket 3211. The main synchronizing wheel 411 and the slave synchronizing wheel 412 are respectively rotatably mounted on the box 310, and the main synchronizing wheel 411 is driven to rotate by a motor driving assembly 415, so that the holding plate 414 is driven to move by the timing belt 413. Translation drive arrangement 400 includes multiaxis robot 420, and multiaxis robot 420 has linking arm 421, goes up to be equipped with on the spraying support 3211 with the connector 343 of linking arm 421 butt joint, and connector 343 has the section shape of T font, and linking arm 421 has the connecting portion 422 with the connector 343 cooperation butt joint, and the connecting portion 422 of linking arm 421 is connected fixedly with all existing dismantlement modes such as connector 343 accessible block, magnetism. It will be appreciated that the thermal spray mechanism 320 may be moved in a direction parallel to the Y-axis direction using the translational drive 400 described above to achieve thermal spraying of the entire surface of the product 10. In particular, the multi-axis robot 420 may be connected to the upper spraying bracket 3211 and move the upper spraying bracket 3211 when the motor driving assembly 415 fails, and the multi-axis robot 420 is any existing robot in the prior art that can achieve the above-mentioned functions.

Referring to fig. 4, 6 to 9, in this embodiment, the upper spraying bracket 3211 includes a spraying sliding plate 3213, and a supporting table 3214, a guiding rod 3215, and a hollow enclosure 3216 that are disposed on the spraying sliding plate 3213 and are sequentially arranged along a wire feeding direction (from top to bottom in the drawing), the enclosure 3216 extends from a bottom surface of the spraying sliding plate 3213 to the thermal spraying nozzle 323, a wire feeding inlet 3213a corresponding to the enclosure 3216 is opened on the spraying sliding plate 3213, and the spraying sliding plate 3213 is slidably disposed on the sliding rail 341. The lower spraying bracket 3212 includes a lifting plate 3217, a lifting guide rod 3218 and a connecting plate 3219, one end of the lifting guide rod 3218 is connected to the lifting plate 3217, the other end is connected to the connecting plate 3219, and a guide hole corresponding to the lifting guide rod 3218 is formed in the upper spraying bracket 3211.

In yet another embodiment, the flat thermal spray coating device 300 is provided with a lifting cylinder which is connected to the connection plate 3219 of the lower spray coating support 3212 and drives the lower spray coating support 3212 to move up and down with respect to the upper spray coating support 3211.

With continued reference to fig. 4, 6 to 9, the wire feeding assembly 322 is configured to provide a welding wire (not shown), which may be a metal wire such as copper, aluminum, tin, etc., or a non-metal wire, and the wire feeding assembly 322 includes a wire reel 3221, a roller seat 3222, a wire feeding roller 3223 rotatably mounted on the roller seat 3222, and a roller driving member 3224 for rotating the wire feeding roller 3223, wherein the wire reel 3221 is disposed on the upper spraying bracket 3211, and the roller seat 3222 is supported on the lower spraying bracket 3212. In this embodiment, the wire feeding assembly 322 further includes a wire feeding conduit (not shown) for the welding wire to pass through and guide the welding wire to move, a wire reel 3221 is supported on the supporting platform 3214, the wire feeding conduit is connected to a wire feeding angle control block 3225, and the wire feeding angle control block 3225 is rotatably disposed on the guiding rod 3215; the welding wire of the wire disc 3221 is fed into the thermal spray nozzle 323 through the wire feeding conduit sequentially via the wire feeding inlet 3213a, the inside of the enclosure 3216 and the wire feeding roller 3223. It will be readily appreciated that by rotating wire feed angle control block 3225, the angle of the wire feed conduit may be adjusted for delivery of the welding wire.

Specifically, the wire reels 3221 are rotatably supported on the supporting table 3214, the number of the wire reels 3221 is, but not limited to, two, and the two wire reels 3221 are arranged in parallel and at intervals in a direction parallel to the Y-axis direction; the roller seat 3222 is mounted on a lifting plate 3217 of the lower spraying bracket 3212 by any conventional fixing means such as screws, welding, etc., the roller seat 3222 is disposed on two opposite sides in a direction parallel to the Y-axis direction, each side is respectively provided with a roller set composed of two wire feeding rollers 3223, and the two roller sets are respectively in one-to-one correspondence with the two wire discs 3221. A wire clamping gap is formed between the two wire feeding rollers 3223 of each roller set for the welding wire to pass through, the roller driving member 3224 is, but not limited to, a servo motor, the roller driving member 3224 is fixed on the roller seat 3222 and is connected to each wire feeding roller 3223, it can be understood that the roller driving member 3224 drives the wire feeding rollers 3223 to rotate, so as to feed the welding wire from both sides of the roller seat 3222 downward to the thermal spraying nozzle 323.

As can be seen from fig. 4, 6 to 9, the thermal spray nozzle 323 is used to melt and spray the welding wire down onto the surface of the product 10, the thermal spray nozzle 323 is located in the inner cavity 311 and is disposed below the wire feeding assembly 322, the thermal spray nozzle 323 may be a plasma nozzle based on arc discharge, or may be a laser nozzle, in this embodiment, the thermal spray nozzle 323 is, but not limited to, a plasma nozzle, and is internally provided with an air blowing pipe (not shown), and the arc generated by the thermal spray nozzle 323 melts the welding wire and is then sprayed onto the upper surface of the product 10 through the air blowing pipe, so as to achieve thermal spraying onto the surface of the product 10.

Referring to fig. 2, 4 to 9, the thermal spraying mechanism 320 further includes a dust hood 324 disposed in the inner cavity 311 and located below the wire feeding assembly 322, the dust hood 324 has a spray cavity 3241, the thermal spraying nozzle 323 is located in the spray cavity 3241, and a thermal spraying port 3242 corresponding to the thermal spraying nozzle 323 is disposed at the bottom of the dust hood 324; the dust hood 324 is provided with a hood exhaust hole 3243, and the hood exhaust hole 3243, the spray cavity 3241 and the thermal spray port 3242 are communicated in sequence. In this embodiment, the thermal spray nozzle 323 and the dust hood 324 are respectively connected and fixed with the lifting plate 3217 of the lower spray bracket 3212, the hood exhaust hole 3243 of the dust hood 324 is connected with an exhaust pipe (not shown), and is connected with an external dust removing device (not shown) through the exhaust pipe, and the box 310 is provided with a through hole 317 penetrating through the exhaust pipe on the side wall of the working cavity 315. By adopting the thermal spraying mechanism 320 with the dust hood 324 and the thermal spraying nozzle 323 arranged in the spraying cavity 3241, the dust of the product 10 is extracted through the dust hood 324 and the dust removing equipment during spraying, thereby reducing the dust concentration, and it is pointed out that by designing the two-stage dust removing structure of the dust hood 324 and the dust removing cavity 316, the dust hood 324 can extract a large amount of dust generated during thermal spraying out of the box body 310, and the dust flowing out from the periphery of the dust hood 324 can be extracted out of the box body 310 through the dust removing cavity 316, thereby effectively extracting the dust in the box body 310, and greatly improving the dust removing effect.

In this embodiment, the dust hood 324 is in an inverted cone shape, and includes a hood head portion 3244 connected to the lifting plate 3217 of the lower spraying bracket 3212, a hood foot portion 3245 located below the hood head portion 3244, and a hood body portion 3246 extending downward from the periphery of the hood head portion 3244 and inward obliquely to the periphery of the hood foot portion 3245, wherein the hood ventilation hole 3243 is disposed on the hood head portion 3244, and the thermal spraying port 3242 is disposed on the hood foot portion 3245.

As can be seen from fig. 7 to 9, in the present embodiment, the dust removal cover 324 includes a first cover body 324a and a second cover body 324b connected to the first cover body 324a, the thermal spray nozzle 323 has a circular cross section, and the first cover body 324a and the second cover body 324b are symmetrically arranged in the axial direction of the thermal spray nozzle 323. The first cover 324a and the second cover 324b are fixedly connected by any existing fixing method such as screws and welding, and both the first cover 324a and the second cover 324b are provided with cover ventilation holes 3243.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.

Claims (10)

1. A planar thermal spray coating apparatus comprising:

the box body is provided with an inner cavity with an opening at the bottom, and the box body is provided with a box air suction hole communicated with the inner cavity; and

the thermal spraying mechanism comprises a mounting frame arranged on the box body, and a wire feeding assembly, a thermal spraying nozzle and a dust hood which are supported on the mounting frame;

the dust hood is arranged in the inner cavity and located below the wire feeding assembly, the dust hood is provided with a spraying cavity, the thermal spraying nozzle is located in the spraying cavity, and the bottom of the dust hood is provided with a thermal spraying port corresponding to the thermal spraying nozzle; the dust removal cover is provided with a cover air suction hole, and the cover air suction hole, the spray cavity and the thermal spraying port are communicated in sequence.

2. The planar thermal spraying apparatus of claim 1, wherein at least one partition plate is disposed in the housing, the at least one partition plate divides the inner chamber into a working chamber and at least one dust removal chamber, the thermal spraying mechanism is disposed in the working chamber, and the housing has the housing suction holes formed in a sidewall of the dust removal chamber.

3. The planar thermal spraying apparatus of claim 2 wherein the number of said partitions is two, two partitions dividing said internal cavity into two of said dust-removal chambers and one of said working chambers between said two dust-removal chambers.

4. A planar thermal spraying apparatus according to any one of claims 1 to 3, wherein the mounting frame comprises an upper spraying bracket and a lower spraying bracket connected to the upper spraying bracket, the upper spraying bracket is provided on the case, and the thermal spraying nozzle and the dust excluding hood are respectively connected and fixed to the lower spraying bracket.

5. A planar thermal spraying device according to claim 4, wherein a through hole communicated with the inner cavity is formed in the top of the box body, the upper spraying bracket is slidably arranged in the through hole of the box body, and an organ cover assembly is arranged between the upper spraying bracket and the box body to close the through hole.

6. A planar thermal spraying apparatus as claimed in claim 4, wherein the lower spray carriage is elevationally adjustably mounted on the upper spray carriage.

7. A planar thermal spray apparatus as set forth in claim 4 wherein said wire feed assembly includes a wire disc, a roller mount, a wire feed roller rotatably mounted on said roller mount, said wire disc being disposed on said upper spray support, and a roller drive for rotating said wire feed roller, said roller mount being supported on said lower spray support.

8. A planar thermal spraying apparatus as claimed in any one of claims 1 to 3, wherein the dust excluding hood includes a first hood body and a second hood body connected to the first hood body; the thermal spraying nozzle is provided with a circular cross section, and the first cover body and the second cover body are symmetrically arranged in the axial direction of the thermal spraying nozzle.

9. A planar thermal spray apparatus as claimed in claim 8, wherein said shroud suction holes are provided in both said first shroud and said second shroud.

10. A planar thermal spraying apparatus as claimed in any one of claims 1 to 3, wherein the thermal spray nozzle is a plasma nozzle.

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