阅读说明：本技术 一种多组水平杆类工件的自动静电喷涂设备 (Automatic electrostatic spraying equipment for multiple groups of horizontal rod workpieces ) 是由 孙从征 孙向东 高敏坚 柯儒群 陈才辉 张梁 毛润才 张冰冰 于 2020-07-30 设计创作，主要内容包括：本发明公开了一种多组水平杆类工件的自动静电喷涂设备,包括喷房,喷房安装在杆类工件输送方向垂直的位置,杆类工件通过输送装置进行水平输送；所述输送装置包括空心转轴,空心转轴的主体外部套设有交替设置的托轮和伸缩组件；喷房内安装有E型结构的水平移动框架,水平移动框架带动自动喷枪组沿杆类工件的垂直方向进行水平往复运动,自动喷枪组包括上自动喷枪组和下自动喷枪组；本发明可以对多组杆类工件进行自动喷涂,满足大规模生产需求,大大提高生产效率；可以提高设备的适用性,实现各种规格杆类工件的水平自动喷涂；可以实现单个喷枪对多组杆类工件进行喷涂,降低设备成本以及运行成本。(The invention discloses automatic electrostatic spraying equipment for a plurality of groups of horizontal rod workpieces, which comprises a spraying room, wherein the spraying room is arranged at a position vertical to the conveying direction of the rod workpieces, and the rod workpieces are horizontally conveyed through a conveying device; the conveying device comprises a hollow rotating shaft, and supporting wheels and telescopic assemblies which are alternately arranged are sleeved outside a main body of the hollow rotating shaft; a horizontal moving frame with an E-shaped structure is arranged in the spray room, the horizontal moving frame drives the automatic spray gun group to horizontally reciprocate along the vertical direction of the rod type workpiece, and the automatic spray gun group comprises an upper automatic spray gun group and a lower automatic spray gun group; the automatic spraying device can automatically spray a plurality of groups of rod workpieces, meets the requirement of large-scale production, and greatly improves the production efficiency; the applicability of the equipment can be improved, and the horizontal automatic spraying of rod workpieces with various specifications can be realized; the spraying of a plurality of groups of rod workpieces by a single spray gun can be realized, and the equipment cost and the operation cost are reduced.)

1. The utility model provides an automatic electrostatic spraying equipment of multiunit horizontal pole class work piece, is including spouting room (1), its characterized in that: the spray room (1) is arranged at a position vertical to the conveying direction of the rod type workpiece (9), the rod type workpiece (9) is horizontally conveyed through the conveying device (8), and the rod type workpiece (9) rotates or does not rotate during conveying; the conveying device (8) comprises a hollow rotating shaft (81), and supporting wheels (86) and telescopic assemblies (87) which are alternately arranged are sleeved outside a main body of the hollow rotating shaft (81); install horizontal migration frame (2) of E type structure in spray booth (1), horizontal migration frame (2) drive automatic spray gun group and carry out horizontal reciprocating motion along the vertical direction of pole class work piece (9), and automatic spray gun group is including last automatic spray gun group (5) and automatic spray gun group (6) down.

2. An automatic electrostatic spraying apparatus for multiple groups of horizontal rod type workpieces as claimed in claim 1, wherein: one end of the hollow rotating shaft (81) is provided with a solid shaft head (83), and the other end is provided with a hollow shaft head (84); the cross section of the hollow rotating shaft (81) is of a square structure, four sides of the hollow rotating shaft are in smooth transition, a strip-shaped sliding hole (82) is formed in the main body of the hollow rotating shaft (81) along the axial direction, and the length of the strip-shaped sliding hole (82) is smaller than that of the hollow rotating shaft (81).

3. An automatic electrostatic spraying apparatus for multiple groups of horizontal rod type workpieces as claimed in claim 1, wherein: the telescopic assembly (87) comprises an inner cylinder body (88) and an outer cylinder body (810) which are sleeved with each other, a hydraulic oil cavity (812) is arranged between the inner cylinder body (88) and the outer cylinder body (810), and telescopic cylinder bodies (813) are respectively arranged in two end parts of the inner cylinder body (88) and the outer cylinder body (810); an outer shaft shoulder (89) is arranged on the outer side of one end of the inner cylinder body (88), and an inner shaft shoulder (811) is arranged on the inner side of one end of the outer cylinder body (810); two annular bulges (814) are respectively arranged on the inner wall and the outer wall of one end part of the telescopic cylinder body (813), a sealing ring is arranged between the annular bulges (814), and a push plate (819) is arranged on the outer end face of the telescopic cylinder body (813).

4. An apparatus for the automated electrostatic spraying of a plurality of groups of horizontal bar-like workpieces according to claim 3, wherein: an inner baffle disc (818) is arranged at one end of the inner cylinder body (88), and an outer baffle disc (817) is arranged at one end of the outer cylinder body (810); the inside of interior barrel (88) is fixed with vertically to set up and be cylindric slider (820), and slider (820) slide in bar slide opening (82) of hollow rotating shaft (81), and the internally mounted of slider (820) has glib talker (821), and glib talker (821) one end is linked together with hydraulic oil chamber (812), and glib talker (821) other end is linked together with hydraulic oil pipe (822), and hydraulic oil pipe (822) wear to establish in the inside of hollow rotating shaft (81) and hollow rotating shaft (81).

5. An automatic electrostatic spraying apparatus for multiple groups of horizontal rod type workpieces as claimed in claim 1, wherein: the two ends of the hollow rotating shaft (81) are provided with a first blocking disc (824) and a second blocking disc (825), one side of the second blocking disc (825) is provided with a return spring (823), and the return spring (823) is sleeved on the main body of the hollow rotating shaft (81).

6. An automatic electrostatic spraying apparatus for multiple groups of horizontal rod type workpieces as claimed in claim 1, wherein: the horizontal moving frame (2) consists of a side frame (21), a top frame (22), a middle frame (23) and a bottom frame (24), and the height of the middle frame (23) can be vertically adjusted; the reciprocating motion of the horizontal moving frame (2) provides a power source through a driving device (3) arranged at the top of the spray room (1); the top framework (22) of the horizontal moving frame (2) is in rolling connection with the guide rollers (4).

7. An automatic electrostatic spraying apparatus for multiple groups of horizontal rod type workpieces as claimed in claim 1, wherein: the upper automatic spray gun group (5) is fixed on a middle framework (23) of the horizontal moving frame (2), and the lower automatic spray gun group (6) is fixed on a bottom framework (24) of the horizontal moving frame (2); the upper automatic spray gun group (5) and the lower automatic spray gun group (6) respectively comprise a plurality of spray guns which are arranged at equal intervals, and the spray guns are arranged up and down correspondingly; and positive pressure protective covers (7) are respectively arranged outside the upper automatic spray gun group (5) and the lower automatic spray gun group (6).

8. An automatic electrostatic spraying apparatus for multiple groups of horizontal rod type workpieces as claimed in claim 1, wherein: the powder recovery system is arranged at the bottom of the inner cavity of the spray room (1), the smoke exhaust system is arranged at the upper part of the inner cavity, and the air knife cleaning system (15) is arranged at the side part of the spray room (1).

9. An apparatus for the automated electrostatic spraying of a plurality of groups of horizontal bar-like workpieces according to claim 8, wherein: the powder recovery system comprises a V-shaped bottom plate (13), the inclination angle of the V-shaped bottom plate (13) is larger than the repose angle of the powder, and the bottom of the V-shaped bottom plate (13) is communicated with a recovery pipeline (14) which is horizontally arranged.

10. An apparatus for the automated electrostatic spraying of a plurality of groups of horizontal bar-like workpieces according to claim 8, wherein: the smoke extraction system comprises an inverted V-shaped top plate (10), and the upper part of the inverted V-shaped top plate (10) is communicated with a smoke extraction pipeline (12); and an illuminating lamp (11) is arranged at the bottom of the inverted V-shaped top plate (10).

Technical Field

The invention relates to electrostatic spraying equipment, in particular to automatic electrostatic spraying equipment for a plurality of groups of horizontal rod workpieces, and belongs to the technical field of spraying.

Background

The Chinese patent with the publication number of CN201519632U discloses an electrostatic spraying device for the outer surface of a round tube, which comprises an electrostatic spray gun and is characterized in that: the equipment consists of a machine body part and a control part, wherein the machine body part is a horizontal conveying track for conveying a circular pipe in a machine shell, and an electrostatic spray gun is fixed on the machine shell; the circular arc surface of the circular tube to be sprayed is uniformly divided into 2-6 circumferential areas in the circumferential direction, each circumferential area is correspondingly provided with an electrostatic spray gun, and the control part consists of a coating tank, a coating pump and a control system for controlling the coating pump; the paint tank is communicated with the electrostatic spray gun through a paint pump and a paint pipe. The spraying equipment can be used for spraying the surface of the circular pipe at one time and automatically, and has the characteristics of high spraying speed and mass spraying.

The spraying equipment is mainly technically characterized in that: a single round pipe horizontally passes through a spraying area, and 2 or more than 2 fixed electrostatic spray guns which are uniformly distributed along the circumference are adopted in the spraying area to spray the surface of the round pipe. The prior art has the following problems:

1. 2 or more than 2 electrostatic spray guns are arranged to only spray one round pipe, so that the efficiency is low;

2. 2 or more than 2 electrostatic spray guns are needed to be used for spraying a single circular tube, the cost of the equipment is high, and the energy consumption of the equipment is also high;

3. the spray gun is only suitable for spraying a small number of round pipes, and once the specifications of the round pipes are not matched, a large amount of time is needed for manually adjusting the angle of the electrostatic spray gun and the number of the electrostatic spray guns, so that production is delayed.

In summary, the prior art obviously has inconvenience and defects in practical use, so it is necessary to provide a novel automatic electrostatic spraying device for multiple groups of horizontal rod workpieces to solve the disadvantages of the prior art.

Disclosure of Invention

Aiming at the defects in the background technology, the invention provides automatic electrostatic spraying equipment for a plurality of groups of horizontal rod workpieces, which can automatically spray the plurality of groups of rod workpieces, meet the requirements of large-scale production and greatly improve the production efficiency; the applicability of the equipment can be improved, and the horizontal automatic spraying of round pipes, round rods, square pipes, profiles and other rod workpieces with various specifications can be realized; the spraying of a plurality of groups of rod workpieces by a single spray gun can be realized, and the equipment cost and the operation cost are reduced.

In order to solve the technical problems, the invention adopts the following technical scheme:

an automatic electrostatic spraying device for a plurality of groups of horizontal rod workpieces comprises a spraying room, wherein the spraying room is arranged at a position vertical to the conveying direction of the rod workpieces, the rod workpieces are horizontally conveyed through a conveying device, and the rod workpieces rotate or do not rotate during conveying; the conveying device comprises a hollow rotating shaft, and supporting wheels and telescopic assemblies which are alternately arranged are sleeved outside a main body of the hollow rotating shaft; the spray booth is internally provided with a horizontal moving frame with an E-shaped structure, the horizontal moving frame drives an automatic spray gun group to horizontally reciprocate along the vertical direction of the rod type workpiece, and the automatic spray gun group comprises an upper automatic spray gun group and a lower automatic spray gun group.

Furthermore, one end of the hollow rotating shaft is provided with a solid shaft head, and the other end of the hollow rotating shaft is provided with a hollow shaft head; the section of the hollow rotating shaft is of a square structure, four sides of the hollow rotating shaft are in smooth transition, a strip-shaped sliding hole is formed in the main body of the hollow rotating shaft in the axial direction, and the length of the strip-shaped sliding hole is smaller than that of the hollow rotating shaft.

Furthermore, the telescopic assembly comprises an inner cylinder and an outer cylinder which are sleeved with each other, a hydraulic oil cavity is arranged between the inner cylinder and the outer cylinder, and the telescopic cylinders are respectively arranged in the two end parts of the inner cylinder and the outer cylinder; an outer shaft shoulder is arranged on the outer side of one end of the inner barrel, and an inner shaft shoulder is arranged on the inner side of one end of the outer barrel; two annular bulges are respectively arranged on the inner wall and the outer wall of one end part of the telescopic cylinder body, a sealing ring is arranged between the annular bulges, and a push plate is arranged on the outer end surface of the telescopic cylinder body.

Furthermore, an inner baffle disc is arranged at one end of the inner cylinder body, and an outer baffle disc is arranged at one end of the outer cylinder body; the inside of interior barrel is fixed with the perpendicular setting and be cylindric slider, and the slider slides in the bar slide opening of hollow pivot, and the internally mounted of slider has the glib talker, and glib talker one end is linked together with the hydraulic pressure oil pocket, and the glib talker other end is linked together with hydraulic pressure oil pipe, and hydraulic pressure oil pipe wears to establish in the inside of hollow pivot and hollow pivot.

Furthermore, the two end parts of the hollow rotating shaft are provided with a first blocking disc and a second blocking disc, one side of the second blocking disc is provided with a return spring, and the return spring is sleeved on the main body of the hollow rotating shaft.

Further, the horizontal moving frame is composed of a side frame, a top frame, a middle frame and a bottom frame, and the height of the middle frame can be vertically adjusted; the reciprocating motion of the horizontal moving frame provides a power source through a driving device arranged at the top of the spray booth; and the top framework of the horizontal moving frame is in rolling connection with the guide rollers.

Furthermore, the upper automatic spray gun group is fixed on a middle framework of the horizontal moving frame, and the lower automatic spray gun group is fixed on a bottom framework of the horizontal moving frame; the upper automatic spray gun group and the lower automatic spray gun group respectively comprise a plurality of spray guns which are arranged at equal intervals, and the spray guns are arranged up and down correspondingly; and positive pressure protective covers are respectively arranged outside the upper automatic spray gun group and the lower automatic spray gun group.

Furthermore, a powder recovery system is arranged at the bottom of an inner cavity of the spraying room, a smoke exhaust system is arranged at the upper part of the inner cavity, and an air knife cleaning system is arranged at the side part of the spraying room.

Further, powder recovery system includes V type bottom plate, and the inclination of V type bottom plate is greater than the angle of repose of powder, and the bottom of V type bottom plate is linked together with the recovery pipeline of level setting.

Furthermore, the smoke extraction system comprises an inverted V-shaped top plate, and the upper part of the inverted V-shaped top plate is communicated with the smoke extraction pipeline; and the bottom of the inverted V-shaped top plate is provided with an illuminating lamp.

After the technical scheme is adopted, compared with the prior art, the invention has the following advantages:

according to the invention, a plurality of groups of horizontal rod workpieces are respectively provided with one automatic spray gun group in the upper and lower directions, the automatic spray gun groups are connected to the horizontal moving frame, the horizontal moving frame drives the spray gun groups to horizontally reciprocate along the vertical direction of the rod workpieces, and a small number of spray guns can be used for spraying the plurality of groups of rod workpieces, so that the requirement of large-scale production can be met, and the production efficiency is greatly improved;

according to the invention, the height of the upper automatic spray gun group is adjusted, and the distance between adjacent supporting wheels is automatically adjusted through hydraulic pressure, so that the spraying of workpieces with different sizes can be met, the applicability of the equipment can be improved, the horizontal automatic spraying of round pipes, round rods, square pipes, profiles and other rod workpieces with various specifications can be realized, and the application range is wider;

according to the invention, a plurality of rod-like workpieces in the reciprocating stroke can be sprayed by one spray gun, so that the equipment cost and the operation cost can be reduced.

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a side view of the structure of the present invention;

FIG. 3 is a schematic view of the structure of the conveying apparatus of the present invention;

FIG. 4 is a schematic structural view of a hollow rotating shaft;

FIG. 5 is a sectional view showing the structure of a hollow shaft;

FIG. 6 is a partial sectional view of the delivery device;

in the figure, 1-spray booth, 2-horizontal moving frame, 21-side frame, 22-top frame, 23-middle frame, 24-bottom frame, 3-driving device, 4-guide roller, 5-upper automatic spray gun group, 6-lower automatic spray gun group, 7-positive pressure shield, 8-conveying device, 81-hollow rotating shaft, 82-strip slide hole, 83-solid shaft head, 84-hollow shaft head, 85-bearing seat, 86-riding wheel, 87-telescopic component, 88-inner cylinder body, 89-outer shaft shoulder, 810-outer cylinder body, 811-inner shaft shoulder, 812-hydraulic oil cavity, 813-telescopic cylinder body, 814-annular bulge, 815-first sealing ring, 816-second sealing ring, 817-outer catch plate, 818-inner baffle disc, 819-push plate, 820-sliding part, 821-oil nozzle, 822-hydraulic oil pipe, 823-return spring, 824-first baffle disc, 825-second baffle disc, 9-rod workpiece, 10-inverted V-shaped top plate, 11-illuminating lamp, 12-smoke pumping pipeline, 13-V-shaped bottom plate, 14-recycling pipeline, 15-air knife cleaning system, 16-upward opening door and 17-downward opening door.

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, the present invention provides an automatic electrostatic spraying apparatus for multiple groups of horizontal rod-like workpieces, which includes a spray booth 1, a horizontal moving frame 2, an automatic spray gun group, a conveying device 8, an air knife cleaning system 15, a powder recovery system, and a smoke exhaust system.

The spray room 1 is used as a main body of equipment and is arranged at a position vertical to the conveying direction of the rod type workpiece 9, the rod type workpiece 9 is horizontally conveyed through the conveying device 8, the rod type workpiece 9 can also rotate through the matching with the rotating device during conveying, the rod type workpiece 9 can rotate or not rotate, and the spraying effect during rotation is better; the conveying device 8 can simultaneously convey 2-1000 rod-like workpieces 9 to a spraying area in the spraying room 1 for spraying, and the rod-like workpieces 9 are in the types of circular pipes, round rods, square pipes, profiles and the like.

As shown in fig. 3, 4, 5 and 6, the conveying device 8 includes a hollow rotating shaft 81, one end of the hollow rotating shaft 81 is provided with a solid shaft head 83, the other end is provided with a hollow shaft head 84, and the solid shaft head 83 and the hollow shaft head 84 are respectively and rotatably connected with a bearing seat 85; the solid spindle head 83 is connected with the motor.

The section of the hollow rotating shaft 81 is of a square structure, four sides of the hollow rotating shaft are in smooth transition, a strip-shaped sliding hole 82 is formed in the main body of the hollow rotating shaft 81 along the axial direction, and the length of the strip-shaped sliding hole 82 is smaller than that of the hollow rotating shaft 81; the outside cover of the main part of hollow pivot 81 is equipped with riding wheel 86 and the flexible subassembly 87 that sets up in turn, and riding wheel 86 is used for bearing rod class work piece 9, and hollow pivot 81 rotates the synchronous rotation that realizes riding wheel 86 and flexible subassembly 87, and flexible subassembly 87 is used for realizing the regulation of interval size between the adjacent riding wheel 86 to the spraying of different pipe diameter rod class work pieces 9.

The telescopic assembly 87 comprises an inner cylinder 88 and an outer cylinder 810 which are sleeved with each other, a hydraulic oil chamber 812 is arranged between the inner cylinder 88 and the outer cylinder 810, telescopic cylinders 813 are respectively arranged in two end parts of the inner cylinder 88 and the outer cylinder 810, and the telescopic cylinders 813 stretch under the hydraulic action.

An outer shaft shoulder 89 is arranged on the outer side of the end part of the inner cylinder body 88 close to the solid shaft head 83; an inner shaft shoulder 811 is arranged on the inner side of the end part of the outer cylinder 810 close to the solid shaft head 83; two annular protrusions 814 are respectively arranged on the inner wall and the outer wall of one end of the telescopic cylinder 813, the two annular protrusions 814 on the inner wall are in sliding fit with the outer wall of the inner cylinder 88, and a first sealing ring 815 is arranged between the two annular protrusions 814; two annular protrusions 814 on the outer wall are in sliding fit with the inner wall of the outer cylinder 810, and a second sealing ring 816 is arranged between the two annular protrusions 814; first seal 815 and second seal 816 cooperate to seal hydraulic chamber 812.

An inner baffle disc 818 is arranged at one end of the inner cylinder body 88 close to the hollow rotating shaft 81, and an outer baffle disc 817 is arranged at one end of the outer cylinder body 810 close to the hollow rotating shaft 81; the inner baffle disc 818 and the outer baffle disc 817 are matched to limit the position of the telescopic cylinder 813 and prevent the telescopic cylinder from sliding out.

The outer end face of the telescopic cylinder 813 is respectively provided with a push plate 819, and the push plates 819 are abutted against the wall faces at two sides of the riding wheel 86.

A vertically arranged cylindrical sliding part 820 is fixed inside the inner cylinder body 88, the sliding part 820 can slide in the strip-shaped sliding hole 82 of the hollow rotating shaft 81, and the sliding part 820 has a positioning function on the sliding of the inner cylinder body 88; an oil nozzle 821 is installed inside the sliding part 820, one end of the oil nozzle 821 is communicated with the hydraulic oil cavity 812, the other end of the oil nozzle 821 is communicated with the hydraulic oil pipe 822, the hydraulic oil pipe 822 penetrates through the hollow rotating shaft 81 and the hollow rotating shaft 81, and a rotary joint is required to be used in the connection process of the hydraulic oil pipe 822 so as to avoid the problem that the hydraulic oil pipe 822 is wound in the rotation process.

The two ends of the hollow rotating shaft 81 are provided with a first blocking disc 824 and a second blocking disc 825, and the first blocking disc 824 and the second blocking disc 825 limit the two ends of the supporting roller 86 and the telescopic assembly 87 which are alternately arranged in the middle; wherein, one side of the second catch 825 is provided with a return spring 823, the return spring 823 is sleeved on the main body of the hollow rotating shaft 81, and the return spring 823 is used for always keeping the pressing force between the riding wheel 86 and the telescopic assembly 87.

According to the invention, the inward or outward automatic extension of the inner telescopic cylinders 813 at the two end parts of the inner cylinder 88 and the outer cylinder 810 is realized through hydraulic pressure, the telescopic cylinders 813 retract inwards to reduce the distance between the adjacent riding wheels 86, and the telescopic cylinders 813 extend outwards to increase the distance between the adjacent riding wheels 86, so that the spraying of rod workpieces 9 with different pipe diameters is adapted.

As shown in fig. 1 and fig. 2, a horizontal moving frame 2 which horizontally reciprocates is installed in the spray booth 1, the horizontal moving frame 2 is of an E-shaped structure, and the E-shaped structure occupies a small space; the horizontal moving frame 2 is composed of a side frame 21, a top frame 22, a middle frame 23 and a bottom frame 24, and the height of the middle frame 23 can be adjusted vertically to adapt to the spraying of rod-like workpieces 9 with different pipe diameters.

The reciprocating motion of the horizontal moving frame 2 provides a power source through the driving device 3, and the driving device 3 is arranged at the top of the spray room 1, so that powder pollution can be reduced, and the maintenance is convenient; a gear arranged on an output shaft of the driving device 3 is meshed with a rack arranged at the top of the top framework 22; the top and the bottom of the top framework 22 are respectively in rolling connection with the guide rollers 4, the guide rollers 4 are fixed on the inner wall of the spray room 1, and the guide rollers 4 play a supporting and guiding function on the movement of the top framework 22; the integral movement of the horizontal moving frame 2 is realized during the process that the driving device 3 drives the top framework 22 to move.

The horizontal moving frame 2 drives the automatic spray gun group to horizontally reciprocate along the vertical direction of the rod-like workpiece 9, the automatic spray gun group comprises an upper automatic spray gun group 5 and a lower automatic spray gun group 6, the upper automatic spray gun group 5 and the lower automatic spray gun group 6 are respectively positioned at the upper position and the lower position of the rod-like workpiece 9, and the rod-like workpiece 9 is simultaneously sprayed from the upper direction and the lower direction; the upper automatic spray gun group 5 is fixed on a middle frame 23 of the horizontal moving frame 2, and the lower automatic spray gun group 6 is fixed on a bottom frame 24 of the horizontal moving frame 2.

The upper automatic spray gun group 5 and the lower automatic spray gun group 6 respectively comprise a plurality of spray guns which are arranged at equal intervals, and the spray guns are arranged up and down correspondingly; go up automatic spray gun group 5 and 6 outsides of automatic spray gun group down and be equipped with malleation protection casing 7 respectively, malleation protection casing 7 adopts the PP material of on-stick powder, and it is fast to trade the look, inputs compressed air to malleation protection casing 7's cavity inside, can make the cavity not advance the powder, plays the effect of increase of service spray gun life-span.

Spout room 1's inner chamber bottom and be equipped with powder recovery system, powder recovery system includes V type bottom plate 13, and the inclination of V type bottom plate 13 is greater than the angle of repose of powder, and the bottom of V type bottom plate 13 is linked together with the recovery pipeline 14 of level setting, and unadsorbed and the powder of overspraying can fall to recovery pipeline 14 by oneself, realizes the cyclic utilization of powder.

And an air knife cleaning system 15 is arranged at the side part of the spray room 1, and the air knife cleaning system 15 is used for cleaning powder attached to the upper surface of the V-shaped bottom plate 13.

A smoke extraction system is arranged at the upper part of the inner cavity of the spray booth 1, the smoke extraction system comprises an inverted V-shaped top plate 10, the inverted V-shaped top plate 10 can collect smoke generated during powder thermosetting, and the upper part of the inverted V-shaped top plate 10 is communicated with a smoke extraction pipeline 12; the smoke exhaust system purifies smoke and reduces environmental pollution.

The bottom of the inverted V-shaped top plate 10 is provided with a lighting lamp 11, and the brightness of the lighting lamp 11 is larger than 600 lumens, so that the spraying effect can be observed conveniently.

An upper opening door 16 and a lower opening door 17 are arranged at the outlet of the spraying room 1, so that the maintenance is facilitated.

The specific working principle of the invention is as follows:

a plurality of groups of rod workpieces 9 are horizontally conveyed to a spraying area of the spraying room 1, a set of automatic spray gun group is respectively arranged in the upper direction and the lower direction of each group of rod workpieces 9, the automatic spray gun groups are connected to the horizontal moving frame 2, the horizontal moving frame 2 drives the automatic spray gun groups to horizontally reciprocate along the vertical direction of the rod workpieces 9, and a single spray gun can spray the rod workpieces 9 in the reciprocating stroke; the height of the middle framework 23 can be vertically adjusted, so that the height of the upper automatic spray gun group 5 is adjusted, the inward or outward automatic expansion of the telescopic cylinder 813 is realized through hydraulic pressure, the distance between the adjacent riding wheels 86 is reduced or increased, and the requirement of spraying rod workpieces 9 with different sizes and specifications can be met; an air knife cleaning system 15 arranged at the side part of the spray room 1 can automatically clean powder attached to the upper surface of the V-shaped bottom plate 13, manual cleaning is avoided, and the color change of equipment is faster; the powder recovery system at the bottom of the inner cavity of the spray room 1 recovers powder which is not adsorbed and is over-sprayed, so that the cyclic utilization of the powder is realized; the smoke extraction system at the upper part of the inner cavity of the spray room 1 absorbs and purifies smoke generated in the powder thermosetting process, so that the environmental pollution is reduced; the V-shaped bottom plate 13 and the inverted V-shaped top plate 10 have obvious flow guide effect, so that the powder and the smoke in the spray room 1 can be collected more fully.

The foregoing is illustrative of the best mode of the invention and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The scope of the present invention is defined by the appended claims, and any equivalent modifications based on the technical teaching of the present invention are also within the scope of the present invention.