CN116764863A - High-efficiency electrostatic coating equipment applied to rod-shaped workpiece - Google Patents

Abstract

The invention belongs to the field of electrostatic coating equipment, and particularly relates to high-efficiency electrostatic coating equipment applied to rod-shaped workpieces, which comprises a spraying room and a guide rail penetrating through the spraying room, wherein the guide rail is hung with the rod-shaped workpieces, at least one group of electrostatic spraying mechanism is arranged in the spraying room, the electrostatic spraying mechanism comprises a liquid coating box, a spraying frame, a coating receiving frame, a coating recycling box and a fan, the spraying frame is arranged on the liquid coating box and internally provided with a plurality of spray nozzles facing to the rear side, the coating recycling box is positioned at the rear side of the coating receiving frame, the upper end of the coating recycling box is respectively connected with the coating receiving frame and the fan by virtue of pipelines, and a spraying baffle plate positioned between the coating receiving frame and the coating recycling box is arranged in the spraying room, wherein mist coating is always maintained in a spraying area under the guide rail for the rod-shaped workpieces to pass through under the cooperation of the spray nozzles and the spraying baffle plate, so that the contact time of the coating and the rod-shaped workpieces is improved, and the effect of improving the spraying quality is achieved.

Description

High-efficiency electrostatic coating equipment applied to rod-shaped workpiece

Technical Field

The invention belongs to the field of electrostatic coating equipment, and particularly relates to efficient electrostatic coating equipment applied to rod-shaped workpieces.

Background

The electrostatic spraying device enables sprayed mist paint to be negatively charged according to the principle of electrostatic attraction, a coated workpiece is positively charged, the mist paint is attached to the surface of the workpiece along the direction of a power line, and the workpiece with a curved surface or an irregular surface has more excellent coverage rate.

The traditional vertical electrostatic spraying equipment still has the defect that the workpiece can not be sprayed simultaneously on the front surface and the rear surface, the workpiece is required to be rotated 180 degrees or two groups of spray heads are arranged to realize the function of spraying on the two surfaces, if a workpiece overturning mode is adopted, the volume of a spraying box is required to be enlarged, the spray heads are required to be far away from the space where the workpiece is required to be reserved for rotating, and if the two groups of spray heads are adopted, the defect that mist paint sprayed by the two groups of spray heads collides with each other to prevent paint from being attached on the workpiece exists.

Disclosure of Invention

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the utility model provides a be applied to high-efficient static coating equipment of shaft-like work piece, it includes the spraying room and passes the guide rail in spraying room, hang the shaft-like work piece on the guide rail, install at least a set of static spraying mechanism in the spraying room, static spraying mechanism includes liquid coating case, the spraying frame, paint collection box and fan, the spraying frame is installed on liquid coating case and internally mounted has the shower nozzle of a plurality of nozzles towards the rear side, paint collection box is located liquid coating case rear side, paint collection box is located paint collection frame rear side and paint collection box upper end relies on the pipeline to be connected with paint collection frame and fan respectively, install the spraying baffle that is located between paint collection frame and the paint collection box in the spraying room, the shower nozzle inclines to the downside and sets up, install the pressurization pipeline that is connected with liquid coating case and each shower nozzle respectively in the spraying frame, paint collection box upper end part is the cone of inversion, paint collection box lower extreme part.

As the preferable scheme, the coating recycling bin lower extreme is connected with the base and sets up at the inside brace table of base, installs the broken pole that extends to the coating recycling bin inside on the brace table, and the inside upper end of brace table is provided with the draw-in groove, and broken pole lower extreme is provided with the fixture block that extends to in the draw-in groove, and the inside slip of brace table is provided with the backup pad that offsets with broken pole lower extreme, is provided with supporting spring between backup pad lower extreme and the brace table inner wall, and when broken pole moved down in the brace table, the fixture block can break away from the draw-in groove.

As the preferable scheme, the crushing rod upper end is provided with a plurality of expansion brackets that set up along crushing rod axis slope, and the expansion bracket sliding is provided with crushing cutter, and crushing cutter outer end is provided with the recess of triangular structure, is provided with the expansion spring between crushing cutter inner and the expansion bracket inner wall.

As the preferable scheme, a funnel-shaped collecting tank is arranged in the paint carrying frame, and a pipeline extending out of the paint recovery box is connected with the collecting tank.

As the preferable scheme, the front end of the spraying baffle is arc-shaped with narrow upper part and wide lower part, a plurality of air outlets corresponding to the front and back directions of the spray head are arranged on the spraying baffle, the air outlets are obliquely arranged towards the upper side, and the fan is connected with an internal ventilation cavity of the spraying baffle through a pipeline.

As the preferable scheme, install the branch screen box that is connected with liquid coating case and base respectively in the spraying room, divide the inside rear end rotation of screen box to be connected with the sieve, be equipped with reset spring between sieve upper end and the branch screen box inner wall, divide the inside upper end of screen box and be provided with collision platform and collision platform lower extreme and be provided with a plurality of circular shape lugs, when the sieve is upwards the side swing, the sieve can with collide the platform contact.

As the preferable scheme, the left side and the right side of the front end of the screening box are respectively provided with a waste discharge port and a baffle plate which is slidably arranged at the waste discharge port, the upper end of the screening box is provided with a motor and a gear which is in power connection with the motor, the upper ends of the left baffle plate and the right baffle plate are respectively provided with racks which are meshed with the gear, and the left rack and the right rack are respectively arranged at the front side and the rear side of the gear.

As the preferable scheme, install conveyer belt and a plurality of sliders of being connected with the conveyer belt in the guide rail, the slider lower extreme is provided with the connecting rod that extends to the guide rail downside, and the connecting rod lower extreme rotates to be connected with the mounted frame, and the mounted frame lower extreme has hung work piece support frame and is fixed in a plurality of shaft-like work pieces in the work piece support frame.

Compared with the prior art, the invention has the advantages that:

1. according to the spray head which is arranged obliquely downwards and designed in the invention, the sprayed spray coating can enlarge the coverage area, the air flow exhausted by the air outlet which is obliquely upwards moves the spray coating passing through the rod-shaped workpiece forwards again, so that the spray coating can cover the rear end area of the workpiece, the effect of uniformly spraying the two sides of the rod-shaped workpiece is achieved under the condition that the spray head or the rod-shaped workpiece is not additionally arranged, in addition, the spray coating is always maintained in the spraying area which is right below the guide rail and is used for the rod-shaped workpiece to pass through under the cooperation of the spray head and the air outlet, the contact time of the spray coating and the rod-shaped workpiece is only slowly lowered, and the effect of improving the spraying quality is achieved.

2. The fan designed by the invention enables the sunk vaporific paint to enter the paint recovery box along the tangential direction, and the vaporific paint is separated from the airflow and rotated to be heavy and converged into the liquid paint under the action of centrifugal force, so that even if the collected liquid paint is conveyed into the liquid paint box again, the situation that the paint cannot be recovered for a spraying process after being solidified for too long time is avoided, and the function of improving the utilization rate of the paint is realized.

Drawings

Fig. 1 is a schematic diagram of the present invention.

Fig. 2 is a schematic view of the interior of the spray booth of the present invention.

Fig. 3 is a schematic view of the positional relationship between the painting carriage and the painting barrier of the present invention.

Fig. 4 is a schematic view of the spray baffle backside apparatus of the present invention.

Fig. 5 is a schematic view of the connection relationship between the rod-shaped work and the guide rail of the present invention.

Fig. 6 is a schematic view of the positional relationship among the painting carriage, the paint receiving carriage, and the paint recovery tank of the present invention.

FIG. 7 is a schematic illustration of the positional relationship between the liquid coating tank, the screening tank and the coating material recovery tank of the present invention.

Fig. 8 is a schematic view of the interior of the paint recovery tank of the present invention.

Fig. 9 is a schematic view of the inside of the screening box of the present invention.

Fig. 10 is a schematic view of the present invention when the screening box is cleaned of waste.

Reference numerals in the figures: 1. a spraying room; 2. a guide rail; 3. a liquid coating tank; 4. a spraying frame; 5. a spray head; 6. a paint receiving rack; 7. a paint recovery box; 8. a blower; 9. spraying a baffle; 10. a rod-shaped workpiece; 20. a base; 21. a support table; 22. a breaker bar; 23. a clamping block; 24. a support plate; 25. a support spring; 26. a telescopic frame; 27. crushing a cutter; 28. a telescopic spring; 29. a clamping groove; 31. a collection tank; 32. a pressurized conduit; 33. an air outlet; 40. screening boxes; 41. a sieve plate; 42. a return spring; 43. a collision table; 44. a bump; 45. a baffle; 46. a motor; 47. a gear; 48. a rack; 50. a conveyor belt; 51. a slide block; 52. a connecting rod; 53. a hanging frame; 54. and a workpiece supporting frame.

Detailed Description

The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples or figures are illustrative of the invention and are not intended to limit the scope of the invention.

The high-efficiency electrostatic coating equipment applied to the rod-shaped workpieces comprises a spraying room 1 and a guide rail 2 penetrating through the spraying room 1, wherein the rod-shaped workpieces 10 are hung on the guide rail 2, at least one group of electrostatic spraying mechanisms are installed in the spraying room 1, each electrostatic spraying mechanism comprises a liquid coating box 3, a spraying frame 4, a coating receiving frame 6, a coating recycling box 7 and a fan 8, the spraying frame 4 is installed on the liquid coating box 3, a spray head 5 with four nozzles facing to the rear side is installed in the spraying frame 4, the coating receiving frame 6 is positioned at the rear side of the liquid coating box 3, the coating recycling box 7 is positioned at the rear side of the coating receiving frame 6, the upper ends of the coating recycling boxes 7 are respectively connected with the coating receiving frame 6 and the fan 8 by virtue of pipelines, and a spraying baffle 9 positioned between the coating receiving frame 6 and the coating recycling box 7 is installed in the spraying room 1;

the upper end part of the paint recovery box 7 is cylindrical, the lower end part of the paint recovery box 7 is in an inverted cone shape, a pipeline connected with the paint recovery box 7 and the paint bearing frame 6 is arranged along the tangential direction of the inner cavity of the paint recovery box 7, and a pipeline connected with the paint recovery box 7 and the fan 8 is arranged at the top end of the paint recovery box 7.

As shown in fig. 5, a conveyor belt 50 and a plurality of sliding blocks 51 connected with the conveyor belt 50 are installed in the guide rail 2, a connecting rod 52 extending to the lower side of the guide rail 2 is arranged at the lower end of the sliding blocks 51, a hanging frame 53 is rotatably connected to the lower end of the connecting rod 52, and a workpiece supporting frame 54 and six rod-shaped workpieces 10 fixed in the workpiece supporting frame 54 are hung at the lower end of the hanging frame 53.

As shown in fig. 6, a funnel-shaped collecting tank 31 is provided in the paint collecting rack 6, and a pipe extending from the paint collecting tank 7 is connected to the collecting tank 31.

As shown in fig. 3 and 7, the spray heads 5 are inclined downward, the spray frame 4 is internally provided with a pressurizing pipeline 32 respectively connected with the liquid coating box 3 and each spray head 5, the front end of the spray baffle 9 is arc-shaped with narrow upper part and wide lower part, the spray baffle 9 is provided with four air outlets 33 corresponding to the front and rear directions of the spray heads 5, the air outlets 33 are inclined upward, and the fan 8 is connected with an internal ventilation cavity of the spray baffle 9 through the pipeline.

The spray head 5 sprays the negatively charged atomized paint in the downward rear direction, the air outlet 33 discharges the air flow in the upward front direction, the atomized paint is always maintained in the spraying area under the guide rail 2 for the rod-shaped workpiece 10 to pass through, the rod-shaped workpiece 10 is grounded with positive charges through the guide rail 2, the atomized paint sinks into the collecting groove 31 of the paint receiving frame 6, and finally the air blower 8 sucks the atomized paint into the paint recovery box 7 for recovery.

As shown in fig. 6, 7 and 8, the lower end of the paint recovery box 7 is connected with a base 20 and a supporting table 21 arranged in the base 20, a crushing rod 22 extending into the paint recovery box 7 is arranged on the supporting table 21, a clamping groove 29 is arranged at the upper end of the inside of the supporting table 21, a clamping block 23 extending into the clamping groove 29 is arranged at the lower end of the crushing rod 22, a supporting plate 24 propped against the lower end of the crushing rod 22 is slidably arranged in the supporting table 21, a supporting spring 25 is arranged between the lower end of the supporting plate 24 and the inner wall of the supporting table 21, and when the crushing rod 22 moves downwards in the supporting table 21, the clamping block 23 can be separated from the clamping groove 29.

As shown in fig. 8, six telescopic frames 26 are arranged at the upper end of the crushing rod 22 and are obliquely arranged along the central axis of the crushing rod 22, crushing cutters 27 are slidably arranged in the telescopic frames 26, grooves with triangular structures are formed at the outer ends of the crushing cutters 27, telescopic springs 28 are arranged between the inner ends of the crushing cutters 27 and the inner walls of the telescopic frames 26, and under the condition that the crushing rod 22 keeps rotating, the crushing cutters 27 can move towards the outer sides of the telescopic frames 26 under the action of centrifugal force against the action of the telescopic springs 28 and are in contact with the inner walls of the paint recovery box 7.

As shown in fig. 7, 9 and 10, a screen separating box 40 connected with the liquid coating box 3 and the base 20 is installed in the spray booth 1, a screen plate 41 is rotatably connected to the rear end inside the screen separating box 40, a return spring 42 is arranged between the upper end of the screen plate 41 and the inner wall of the screen separating box 40, a collision table 43 is arranged at the upper end inside the screen separating box 40, a plurality of circular protruding blocks 44 are arranged at the lower end of the collision table 43, and when the screen plate 41 swings towards the upper side, the screen plate 41 can be contacted with the collision table 43.

The left and right sides of the front end of the screening box 40 are respectively provided with a waste discharge port 49 and a baffle 45 which is slidably arranged at the waste discharge port 49, the outer end of the baffle 45 is provided with an inclined plane, the upper end of the screening box 40 is provided with a motor 46 and a gear 47 which is in power connection with the motor 46, the upper ends of the left and right baffles 45 are respectively provided with racks 48 which are meshed with the gear 47, and the left and right racks 48 are respectively arranged at the front side and the rear side of the gear 47.

The atomized paint entering the paint recovery box 7 is converged into liquid and flows back to the liquid paint box 3 sequentially through the base 20 and the screening box 40, a one-way valve is arranged at the joint of the liquid paint box 3 and the screening box 40, and the screen plate 41 blocks solidified paint fragments from entering the liquid paint box 3.

Working principle:

the air flow generated by the positive rotation of the fan 8 enters the paint recovery box 7 from the paint receiving frame 6 and is directly discharged through a pipeline at the upper end of the paint recovery box 7, the vaporific paint entering the paint recovery box 7 along with the air flow rotates along the inner wall of the paint recovery box 7 and is separated from the air flow under the action of centrifugal force, and the vaporific paint is rotated and sunk along the conical inner wall at the lower end of the paint recovery box 7, the vaporific paint is converged into liquid paint again in the process, and finally the liquid paint is returned into the liquid paint box 3 through the screening box 40.

After the equipment stops spraying, the residual liquid paint in the paint recovery box 7, the base 20 and the screening box 40 needs to be cleaned, the fan 8 is controlled to reversely rotate, air flow from top to bottom is generated in the paint recovery box 7 and enters the screening box 40 through the base 20, the air flow exerts acting force on the upper end face of the inclined telescopic frame 26, the crushing rod 22 can be driven to move downwards against the elastic force of the supporting spring 25, the clamping block 23 is separated from the clamping groove 29, the crushing rod 22 can be driven to rotate after the clamping block 23 is separated from the clamping groove 29, the crushing cutter 27 moves towards the outer side of the telescopic frame 26 against the action of the telescopic spring 28 under the centrifugal force and contacts with the inner wall of the paint recovery box 7, and the crushing cutter 27 scrapes the liquid paint adhered to the inner wall of the paint recovery box 7 and the crushed and solidified paint;

in addition, the motor 46 is controlled to rotate forward and move the left and right baffles 45 toward the inside of the screen separating box 40 in cooperation with the gear 47 and the rack 48, the two baffles 45 block the passage with the liquid coating box 3 and open the waste discharge port 49, and the baffles 45 repeatedly swing upward against the return spring 42 under the action of the air flow and collide with the collision table 43 and fall down again, so that the residual liquid coating and solidified coating fragments are discharged through the waste discharge port 49 with the air flow.

The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent variation, etc. of the above embodiment according to the technical matter of the present invention fall within the scope of the present invention.

Claims (8)

1. The utility model provides a be applied to high-efficient static coating equipment of shaft-like work piece, it includes spray booth (1) and passes guide rail (2) of spray booth (1), hang shaft-like work piece (10) on guide rail (2), install at least a set of static spraying mechanism in spray booth (1), static spraying mechanism includes liquid coating case (3), spray frame (4), coating is accepted frame (6), coating recovery case (7) and fan (8), spray frame (4) are installed on liquid coating case (3) and internally mounted have shower nozzle (5) of a plurality of nozzles towards the rear side, coating is accepted frame (6) and is located liquid coating case (3) rear side, coating recovery case (7) are located coating and accept frame (6) rear side and coating recovery case (7) upper end relies on the pipeline to be connected with coating and accept frame (6) and fan (8) respectively, install in spray booth (1) and be located between coating frame (6) and the coating recovery case (7) baffle (9), shower nozzle (5) slope towards the downside sets up, install spray frame (4) respectively with liquid coating case (3) and each tip (7) and be the tip is the recovery case (32) that is connected to the pressurization is divided down.

2. A high-efficiency electrostatic painting apparatus for rod-shaped workpieces according to claim 1, characterized in that: the coating recycling bin (7) lower extreme is connected with base (20) and sets up supporting bench (21) inside base (20), install on supporting bench (21) and extend to inside broken pole (22) of coating recycling bin (7), supporting bench (21) inside upper end is provided with draw-in groove (29), broken pole (22) lower extreme is provided with fixture block (23) that extend to in draw-in groove (29), supporting bench (21) inside slip is provided with backup pad (24) that offsets with broken pole (22) lower extreme, be provided with supporting spring (25) between backup pad (24) lower extreme and the supporting bench (21) inner wall, when broken pole (22) down remove in supporting bench (21), fixture block (23) can break away from draw-in groove (29).

3. A high-efficiency electrostatic painting apparatus for rod-shaped workpieces according to claim 2, characterized in that: the crushing rod (22) upper end is provided with a plurality of expansion brackets (26) that set up along the slope of crushing rod (22) axis, and the interior slip of expansion bracket (26) is provided with crushing cutter (27), and crushing cutter (27) outer end is provided with the recess of triangular prism structure, is provided with expansion spring (28) between crushing cutter (27) inner and the inner wall of expansion bracket (26).

4. A high-efficiency electrostatic painting apparatus for rod-shaped workpieces according to claim 1, characterized in that: the paint collecting rack (6) is internally provided with a funnel-shaped collecting groove (31), and a pipeline extending out of the paint recycling bin (7) is connected with the collecting groove (31).

5. A high-efficiency electrostatic painting apparatus for rod-shaped workpieces according to claim 1, characterized in that: the front end of the spraying baffle plate (9) is arc-shaped, the upper part of the spraying baffle plate is narrow, the lower part of the spraying baffle plate is wide, a plurality of air outlets (33) corresponding to the front-back direction of the spray head (5) are arranged on the spraying baffle plate (9), the air outlets (33) are inclined upwards, and the fan (8) is connected with an internal ventilation cavity of the spraying baffle plate (9) through a pipeline.

6. A high-efficiency electrostatic painting apparatus for rod-shaped workpieces according to claim 2, characterized in that: install branch screen box (40) that are connected with liquid coating case (3) and base (20) respectively in spray booth (1), divide inside rear end rotation of screen box (40) to be connected with sieve (41), be equipped with reset spring (42) between sieve (41) upper end and the branch screen box (40) inner wall, divide inside upper end of screen box (40) to be provided with collision platform (43) and collision platform (43) lower extreme to be provided with a plurality of circular shape lug (44), when sieve (41) are upwards swung, sieve (41) can be with collision platform (43) contact.

7. A high-efficiency electrostatic painting apparatus applied to a rod-shaped work according to claim 6, characterized in that: the left side and the right side of the front end of the screening box (40) are respectively provided with a waste discharge port (49) and a baffle plate (45) which is slidably arranged at the waste discharge port (49), the upper end of the screening box (40) is provided with a motor (46) and a gear (47) which is in power connection with the motor (46), the upper ends of the left baffle plate and the right baffle plate (45) are respectively provided with racks (48) which are meshed with the gear (47), and the left rack and the right rack (48) are respectively arranged at the front side and the rear side of the gear (47).

8. A high-efficiency electrostatic painting apparatus for rod-shaped workpieces according to claim 1, characterized in that: the guide rail (2) is internally provided with a conveying belt (50) and a plurality of sliding blocks (51) connected with the conveying belt (50), the lower ends of the sliding blocks (51) are provided with connecting rods (52) extending to the lower sides of the guide rail (2), the lower ends of the connecting rods (52) are rotatably connected with hanging frames (53), and the lower ends of the hanging frames (53) are hung with workpiece supporting frames (54) and a plurality of rod-shaped workpieces (10) fixed in the workpiece supporting frames (54).