Metal sheet electrostatic spraying equipment

Abstract

The present invention belongs to the technical field of electrostatic spraying of metal plates, and specifically is an electrostatic spraying device for metal plates, comprising a spraying chamber, a lifting plate fixedly connected to one side of the transfer column, clamping plates slidably connected to both sides of the fixed box, a processed plate is lifted to the spraying chamber for spraying by the two clamping plates, a cleaning plate is slidably connected to the spraying chamber, movable spray heads are slidably connected to both sides of the cleaning plate, and disassembly plates are fixedly connected to both sides of the spraying chamber by bolts; the present invention clamps the movable metal plate by the clamping plate, starts the transfer column to drive the lifting plate to place the metal plate into the spraying chamber, the movable spray head moves in the spraying chamber to electrostatically spray the processed plate, and after the spraying is completed, the disassembly plate is removed to clean and recover the powder sprayed out of the spraying chamber, and by electrostatically spraying the processed plate in a smaller spraying chamber, the paint is scattered in the spraying chamber with a smaller space, so that the paint scattered in the spraying chamber can be more conveniently recovered.

Description

Technical Field

[0001] The invention belongs to the technical field of electrostatic spraying of metal plates, in particular to an electrostatic spraying device for metal plates. Background Art

[0002] Electrostatic spraying is based on the principle of electrostatic attraction. The metal plate and other objects to be coated are grounded as the positive electrode, and the spray gun, spray cup, etc. are connected to high voltage as the negative electrode. Under the action of the high-voltage DC electric field, the atomized paint carries a large amount of negative charge and is further dispersed and atomized again. The atomized paint is adsorbed on the grounded positive electrode to be sprayed metal plate and the surface of the object to be sprayed to discharge, and the spraying work on the metal plate can be completed. After electrostatic spraying, a large amount of paint is scattered in the spraying work area and the equipment for lifting metal plates. It is necessary to clean the lifting equipment and spraying area regularly to ensure the normal progress of electrostatic spraying.

[0003] A patent with the announcement number CN109499793B discloses a belt-type electrostatic guide device and a powder electrostatic spraying device, including a long metal strip arranged along the running direction of the sprayed strip within the spraying range, the long metal strip is grounded and located on the width side of the sprayed strip, and the extension direction of the long metal strip is consistent with the running direction of the sprayed strip; the present invention can reduce the edge electric field strength of both sides of the spraying surface of the running strip as much as possible, thereby reducing the amount of powder carrying electrostatic charge sprayed by the sprayer attached to the edge parts of both sides of the strip;

[0004] Currently, when electrostatic spraying is performed on metal plates, the static effect causes the paint to be sprayed on the metal plates in a more dispersed state. During spraying, a large amount of paint cannot be adsorbed on the metal plates but is distributed in the spraying processing space or falls on the ground in the spraying area, which will cause the problem of excess paint being difficult to recover. After a long period of spraying, the spraying area will be filled with paint, which will affect the mobile spraying work of the spraying equipment.

[0005] To this end, the present invention provides a metal plate electrostatic spraying device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the electrostatic spraying equipment of metal sheet described in the present invention comprises a spraying chamber, a transfer column is provided on one side of the spraying chamber, a lifting plate is fixedly connected to one side of the transfer column, a lifting hook is provided on one side of the lifting plate, a transfer plate is provided on one side of the lifting plate, a fixing box is fixedly connected to one side of the transfer plate, a bidirectional motor is fixedly connected to the middle of the fixing box, first threaded rods are fixedly connected to both sides of the bidirectional motor, one end of the two first threaded rods are rotatably connected to the fixing box, clamping plates are slidably connected to both sides of the fixing box, and the two clamping plates are threadedly connected to the first threaded rod, the processing plate is lifted by the two clamping plates, the transfer plate is lifted by the lifting hook on one side of the lifting plate, and the processing plate between the clamping plates is lifted to the spraying Spraying is carried out indoors, a cleaning plate is slidably connected in the spraying chamber, two second motors are fixedly connected to the lower side of the spraying chamber, the output ends of the two second motors are fixedly connected to a third threaded rod, one end of the two third threaded rods are rotatably connected to the spraying chamber, the two third threaded rods are threadedly connected to the cleaning plate, the third motors are fixedly connected to both sides of the cleaning plate, the output ends of the two third motors are fixedly connected to a fourth threaded rod, both sides of the cleaning plate are fixedly connected to a rotating shell, one end of the two fourth threaded rods are rotatably connected to the rotating shell, both sides of the cleaning plate are slidably connected to mobile nozzles, the processing plate can be electrostatically sprayed by the two mobile nozzles, the two fourth threaded rods are threadedly connected to the mobile nozzles, and disassembly plates are fixedly connected to both sides of the spraying chamber by bolts.

[0008] Preferably, a first adsorption block is fixedly connected to the lower side of the fixed box, and the two clamping plates are slidably connected to the first adsorption block. A plurality of second adsorption blocks are fixedly connected to one side of the processing plate in the spray chamber, and the first adsorption block and the plurality of second adsorption blocks are both inclined blocks. The first adsorption block and the plurality of second adsorption blocks can compete for adsorption of the paint on the four sides of the processing plate.

[0009] Preferably, both sides of the cleaning plate are in close contact with the inner side of the spray chamber, both sides of the cleaning plate are provided with openings matching with the second adsorption blocks, and the cleaning plate is slidably connected with the second adsorption blocks on both sides.

[0010] Preferably, a first scraping block is fixedly connected to one side of the two movable nozzles, and the two first scraping blocks are slidably connected to the cleaning plate.

[0011] Preferably, one side of the two movable nozzles is slidably connected to a connecting plate, one end of the two connecting plates is commonly fixed with a scraper plate, the other ends of the two connecting plates are slidably connected to the upper side of the spray chamber, the scraper plate is slidably connected to the second adsorption block on the lower side, and the scraper plate is slidably connected to the lower side of the interior of the spray chamber.

[0012] Preferably, a cleaning frame is fixedly connected to one side of the fixed box, a first motor is fixedly connected to one side of the cleaning frame, a second threaded rod is fixedly connected to the output end of the first motor, one end of the second threaded rod is rotatably connected to the cleaning frame, a telescopic cylinder is slidably connected in the cleaning frame, and the telescopic cylinder is threadedly connected to the first motor.

[0013] Preferably, a cleaning block is slidably connected inside the telescopic cylinder, and two fixed rods are fixedly connected inside the telescopic cylinder. Both of the two fixed rods are slidably connected to the cleaning block, and both of the two fixed rods are sleeved with a first spring, one end of the two first springs is fixedly connected to the telescopic cylinder, and the other end of the two first springs is fixedly connected to the cleaning block.

[0014] Preferably, one end of each of the two fixing rods is fixed with a protrusion, and the two protrusions are slidably connected to the cleaning block.

[0015] Preferably, two second scraping blocks are slidably connected to both sides of the cleaning plate, protective shells are provided on the outer sides of the two third motors, reciprocating screws are rotatably connected between the two protective shells and the rotating shells, one end of the two fourth threaded rods are located in the rotating shell and are fixedly connected to the first bevel gear, one end of the two reciprocating screws are located in the rotating shell and are fixedly connected to the second bevel gear, the two first bevel gears are meshed with the second bevel gears, and the two reciprocating screws are threadedly connected to the second scraping blocks.

[0016] Preferably, a storage seat is provided on one side of the spray chamber, and rotating disks are fixedly connected on both sides of the storage seat, and a rotating column is rotatably connected between the two rotating disks, one end of the two rotating columns extends into the rotating disk on one side, and one end of the two rotating columns located in the rotating disk is fixedly connected to one end of a spiral spring, and the other ends of the two spiral springs are fixed to the rotating disk, and a paint box is fixedly connected to one side of the storage seat between the two rotating columns, and both ends of the paint box extend into the rotating column through pipes and are rotatably connected to the rotating column, and the two rotating columns are connected to the mobile nozzles through connecting pipes, and the two connecting pipes can be wound around the rotating column.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The electrostatic spraying equipment for metal plates described in the present invention comprises the following steps: a clamping plate is used to move and clamp the metal plate, a transfer column is started to drive the lifting plate to place the metal plate into the spraying room, the spraying room is closed by the transfer plate, and the second motor and the third motor are started to make the mobile nozzle move up and down in the spraying room to electrostatically spray the processed plate; after the spraying is completed, the disassembly plate is removed to clean and recover the powder sprayed in the spraying room; by electrostatically spraying the processed plate in a smaller spraying room, the paint is scattered in the spraying room with a smaller space, and the paint scattered in the spraying room can be more conveniently recovered.

[0019] 2. The electrostatic spraying equipment for metal plates described in the present invention also carries the same positive charge as the processing plate through the first adsorption block and the second adsorption block, and the first adsorption block and the second adsorption block are arranged to be inclined blocks in the shape of a "blade". The stronger electric field of the first adsorption block and the second adsorption block can simultaneously adsorb the powder sprayed near the edge of the processing plate, thereby reducing the accumulation of powder at the edge of the processing plate, improving the consistency of the thickness of the adsorbed powder at the edge of the processing plate and the powder thickness on the plate surface, reducing the deformation problem of the plate edge and the plate surface, and ensuring the quality of the metal plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the spray chamber of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the cleaning plate of the present invention;

[0024] Figure 4 It is a schematic diagram of the cross-sectional structure of the fixing box of the present invention;

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of the telescopic cylinder of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the storage seat of the present invention;

[0027] Figure 7 It is a schematic diagram of the cross-sectional structure of the rotating disk of the present invention;

[0028] Figure 8 It is a schematic diagram of the structure of the clamping plate of the present invention;

[0029] In the figure: 1, spray room; 2, transfer column; 3, lifting plate; 4, transfer plate; 5, disassembly plate; 6, fixing box; 7, clamping plate; 8, bidirectional motor; 9, first threaded rod; 10, first adsorption block; 11, cleaning frame; 12, first motor; 13, second threaded rod; 14, telescopic cylinder; 15, cleaning block; 16, fixing rod; 17, first spring; 18, bump; 19, second adsorption block; 20, processing plate; 21, second motor; 22 , third threaded rod; 23, cleaning plate; 24, third motor; 25, fourth threaded rod; 26, moving nozzle; 28, first scraper block; 29, first bevel gear; 30, second bevel gear; 31, reciprocating screw; 32, second scraper block; 33, connecting plate; 34, scraper plate; 35, connecting pipe; 36, storage seat; 37, paint box; 38, rotating disk; 40, rotating column; 41, volute spring; 42, protective shell; 43, rotating shell. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] Embodiment 1: Figures 1 to 4 As shown, an electrostatic spraying device for metal sheets according to an embodiment of the present invention comprises a spraying chamber 1, a transfer column 2 is provided on one side of the spraying chamber 1, a lifting plate 3 is fixedly connected to one side of the transfer column 2, a lifting hook is provided on one side of the lifting plate 3, a transfer plate 4 is provided on one side of the lifting plate 3, a fixed box 6 is fixedly connected to one side of the transfer plate 4, a bidirectional motor 8 is fixedly connected to the middle of the fixed box 6, first threaded rods 9 are fixedly connected to both sides of the bidirectional motor 8, one end of the two first threaded rods 9 are rotatably connected to the fixed box 6, clamping plates 7 are slidably connected to both sides of the fixed box 6, and the two clamping plates 7 are threadedly connected to the first threaded rod 9, a processing plate 20 is lifted by the two clamping plates 7, the transfer plate 4 is lifted by the lifting hook on one side of the lifting plate 3, the processing plate 20 between the clamping plates 7 is lifted into the spraying chamber 1 for spraying, and the sliding connection in the spraying chamber 1 A cleaning plate 23 is connected, and two second motors 21 are fixedly connected to the lower side of the spray chamber 1. The output ends of the two second motors 21 are fixedly connected to the third threaded rods 22, and one ends of the two third threaded rods 22 are rotatably connected to the spray chamber 1. The two third threaded rods 22 are threadedly connected to the cleaning plate 23. Third motors 24 are fixedly connected to both sides of the cleaning plate 23, and the output ends of the two third motors 24 are fixedly connected to the fourth threaded rods 25. A rotating shell 43 is fixedly connected to both sides of the cleaning plate 23, and one ends of the two fourth threaded rods 25 are rotatably connected to the rotating shell 43. Mobile nozzles 26 are slidably connected to both sides of the cleaning plate 23, and the processing plate 20 can be electrostatically sprayed by the two mobile nozzles 26. The two fourth threaded rods 25 are threadedly connected to the mobile nozzles 26, and disassembly plates 5 are fixedly connected to both sides of the spray chamber 1 by bolts.

[0032] Specifically, currently, an operator fixes a metal sheet on a hoisting device, and the hoisting device moves the metal sheet to a spraying area, and uses the spraying device to perform electrostatic spraying. When electrostatically spraying the metal sheet, the electrostatic effect causes the paint to be sprayed on the metal sheet in a more dispersed state. During spraying, a large amount of paint cannot be adsorbed on the metal sheet and is distributed in the spraying processing space or falls on the ground in the spraying area, which will cause the problem of difficulty in recovering excess paint. After a long period of spraying, the spraying area will be filled with paint, which will affect the mobile spraying work of the spraying equipment.

[0033] When spraying the metal plate, start the bidirectional motor 8 to drive the first threaded rod 9 to rotate so that the two clamping plates 7 move in the fixing box 6, and the clamped metal plate is moved by the clamping plate 7, and the transfer plate 4 is lifted by the lifting hook on the lifting plate 3 to move the metal plate fixed by the clamping plate 7, start the transfer column 2 to drive the lifting plate 3 to place the metal plate in the spraying room 1, and close the spraying room 1 through the transfer plate 4, start the second motor 21 to drive the third threaded rod 22 to rotate so that the cleaning plate 23 slides up and down in the spraying room 1, and start the third motor 24 to drive the third threaded rod 22 to rotate so that the cleaning plate 23 slides up and down in the spraying room 1. The four-thread rod 25 rotates to make the mobile nozzle 26 slide on the cleaning plate 23, so that the mobile nozzle 26 can be moved up and down in the spraying room 1 to electrostatically spray the processing plate 20. After the spraying is completed, the disassembly plate 5 can be removed to clean and recover the powder sprayed in the spraying room 1. The materials of the disassembly plate 5 and the spraying room 1 are both high-strength hard plastic. By electrostatically spraying the processing plate 20 in a smaller spraying room 1, the paint is scattered in the spraying room 1 with a smaller space, and the scattered paint in the spraying room 1 can be more conveniently recovered.

[0034] like Figure 8 As shown, a first adsorption block 10 is fixedly connected to the lower side of the fixed box 6, and two clamping plates 7 are slidably connected to the first adsorption block 10. A plurality of second adsorption blocks 19 are fixedly connected to one side of the processing plate 20 in the spray chamber 1. The first adsorption block 10 and the plurality of second adsorption blocks 19 are both inclined blocks. The first adsorption block 10 and the plurality of second adsorption blocks 19 can compete for adsorption of the paint on the four sides of the processing plate 20.

[0035] Specifically, since the spraying equipment carries a high-voltage electrostatic electric field, the sprayed powder carries a negative charge, and the sprayed plate is to be grounded, so the charged powder sprayed by the sprayer is equivalent to the negative pole of the power supply, and the sprayed plate is equivalent to the zero pole. Due to the attraction of the electric field, the charged powder sprayed by the sprayer is very easy to combine with the surface of the sprayed plate and adhere to the plate surface, and the charged powder is more likely to adhere to the place where the electric field is strong on the plate; for the metal surface, the electric field at the tip is much stronger than that at the smooth place, so for the sprayed plate, the edge of the plate is a right-angle edge, and its electric field strength is the strongest, so the charged powder is more likely to gather at the edge of the plate, and the metal plate edge attracts more powder, which causes the paint film on the edge of the plate to be much thicker than the surface of the plate after heating and baking. When many metal plates are stacked, the pressure on the edge of the plate and the plate surface is different, and the edge of the plate and the plate surface are deformed to different degrees, thereby affecting the quality of the metal plate;

[0036] The first adsorption block 10 and the second adsorption block 19 also carry the same positive charge as the processing plate 20, and the first adsorption block 10 and the second adsorption block 19 are arranged to be inclined blocks in the shape of a "blade". The stronger electric field of the first adsorption block 10 and the second adsorption block 19 can simultaneously adsorb the powder sprayed near the edge of the processing plate 20, thereby reducing the accumulation of powder at the edge of the processing plate 20, improving the consistency between the thickness of the adsorbed powder at the edge of the processing plate 20 and the thickness of the powder on the plate surface, reducing the deformation problem of the plate edge and the plate surface, and ensuring the quality of the metal plate.

[0037] like Figure 2 As shown, both sides of the cleaning plate 23 are close to the inner side of the spray chamber 1, and both sides of the cleaning plate 23 are provided with openings matching the second adsorption blocks 19, and the cleaning plate 23 is slidably connected to the second adsorption blocks 19 on both sides.

[0038] Specifically, when the cleaning plate 23 moves with the mobile nozzle 26 to spray the processing plate 20, the four sides of the cleaning plate 23 can scrape off the powder adsorbed on the inner wall of the spraying room 1 so as to recover the powder on the inner wall of the spraying room 1, and at the same time, the powder adsorbed on the second adsorption blocks 19 on both sides can be scraped off, so that the second adsorption blocks 19 on both sides can continue to compete with the plate edges of the processing plate 20 subsequently placed in the spraying room 1 for adsorbing powder.

[0039] like Figure 3 As shown, a first scraping block 28 is fixedly connected to one side of the two movable nozzles 26 , and the two first scraping blocks 28 are both slidably connected to the cleaning plate 23 .

[0040] Specifically, when the mobile nozzle 26 moves to spray the processing plate 20 , the mobile nozzle 26 moves with the first scraping block 28 to scrape off the powder adsorbed on the upper and lower surfaces of both sides of the cleaning plate 23 , and recover the powder adsorbed on the surface of the cleaning plate 23 .

[0041] like Figure 2 As shown, one side of the two movable nozzles 26 is slidably connected with a connecting plate 33, one end of the two connecting plates 33 is commonly fixed with a scraper plate 34, the other ends of the two connecting plates 33 are slidably connected to the upper side of the spray chamber 1, the scraper plate 34 is slidably connected to the second adsorption block 19 on the lower side, and the scraper plate 34 is slidably connected to the lower side of the inside of the spray chamber 1.

[0042] Specifically, when the mobile nozzle 26 moves to spray the surface of the processing plate 20, the mobile nozzle 26 can slide up and down on the connecting plate 33 and can also drive the connecting plate 33 to move left and right in the spraying room 1. The connecting plate 33 then drives the scraper plate 34 to move left and right to scrape the powder scattered at the bottom of the spraying room 1 and the powder adsorbed on the second adsorption block 19 on the lower side, so that the second adsorption block 19 on the lower side can continue to perform normal powder scrambling adsorption.

[0043] like Figure 4 As shown, a cleaning frame 11 is fixedly connected to one side of the fixed box 6, a first motor 12 is fixedly connected to one side of the cleaning frame 11, a second threaded rod 13 is fixedly connected to the output end of the first motor 12, one end of the second threaded rod 13 is rotatably connected to the cleaning frame 11, a telescopic cylinder 14 is slidably connected inside the cleaning frame 11, and the telescopic cylinder 14 is threadedly connected to the first motor 12.

[0044] Specifically, start the bidirectional motor 8 to make the two clamping plates 7 slide to scrape off the powder adsorbed on the first adsorption block 10. When the two clamping plates 7 are closest to each other, start the first motor 12 to drive the second threaded rod 13 to rotate to make the telescopic cylinder 14 slide on the cleaning frame 11. The telescopic cylinder 14 moves with the cleaning block 15 to scrape off the powder adsorbed on the clamping surfaces of the two clamping plates 7, ensuring that the clamping surfaces of the clamping plates 7 will not produce powder accumulation due to long-term use, so that the clamping plates 7 have good conductivity so that the processing plate 20 can have an electric charge and can be electrostatically sprayed smoothly.

[0045] like Figure 5 As shown, a cleaning block 15 is slidably connected inside the telescopic cylinder 14, and two fixed rods 16 are fixedly connected inside the telescopic cylinder 14. The two fixed rods 16 are slidably connected to the cleaning block 15, and the two fixed rods 16 are sleeved with a first spring 17, one end of the two first springs 17 is fixedly connected to the telescopic cylinder 14, and the other end of the two first springs 17 is fixedly connected to the cleaning block 15.

[0046] Specifically, when the telescopic cylinder 14 moves with the cleaning block 15, the scraper knife obliquely arranged at the end of the cleaning block 15 scrapes again the position on the first adsorption block 10 that cannot be scraped by the clamping plate 7. The cleaning block 15 slides in the telescopic cylinder 14 and compresses the first spring 17 through the fixed rod 16, so that the end of the cleaning block 15 can scrape the powder on the first adsorption block 10 that cannot be scraped by the clamping plate 7.

[0047] like Figure 5 As shown, one end of the two fixing rods 16 is fixedly connected with a protrusion 18 , and the two protrusions 18 are slidably connected to the cleaning block 15 .

[0048] Specifically, when the cleaning block 15 slides in the telescopic cylinder 14, the sliding of the fixed rod 16 in the cleaning block 15 is restricted by the sliding of the protrusion 18 in the cleaning block 15, thereby preventing the cleaning block 15 from sliding out of the telescopic cylinder 14 and ensuring that the cleaning block 15 scrapes off the powder normally.

[0049] like Figure 3As shown, two second scraping blocks 32 are slidably connected on both sides of the cleaning plate 23, and protective shells 42 are sleeved on the outer sides of the two third motors 24. Reciprocating screw rods 31 are rotatably connected between the two protective shells 42 and the rotating shell 43. One end of the two fourth threaded rods 25 is located in the rotating shell 43 and is fixedly connected to the first bevel gear 29. One end of the two reciprocating screw rods 31 is located in the rotating shell 43 and is fixedly connected to the second bevel gear 30. The two first bevel gears 29 are meshed with the second bevel gear 30, and the two reciprocating screw rods 31 are threadedly connected to the second scraping blocks 32.

[0050] Specifically, when scraping off the powder on the cleaning plate 23, the reciprocating screw 31 is composed of two sections of reciprocating screw, and the two sections of reciprocating screw are threadedly connected to a second scraping plate 32. The third motor 24 is started to drive the fourth threaded rod 25 to rotate, so that the first bevel gear 29 in the rotating shell 43 rotates, and the first bevel gear 29 drives the second bevel gear 30 to rotate to rotate the reciprocating screw 31. The reciprocating screw 31 rotates between the rotating shell 43 and the protective shell 42, so that the two sections of reciprocating screw respectively carry a second scraping plate 32 to slide on both sides of the cleaning plate 23, and the powder on the upper and lower sides of the cleaning plate 23 is scraped off by the reciprocating movement of the second scraping block 32.

[0051] Embodiment 2: Figure 6 to Figure 7 As shown in Comparative Example 1, another embodiment of the present invention is:

[0052] A storage seat 36 is provided on one side of the spray chamber 1, and rotating disks 38 are fixedly connected on both sides of the storage seat 36, and a rotating column 40 is rotatably connected between the two rotating disks 38. One end of the two rotating columns 40 extends into the rotating disk 38 on one side, and one end of the two rotating columns 40 located in the rotating disk 38 is fixedly connected to one end of a spiral spring 41, and the other ends of the two spiral springs 41 are fixedly connected to the rotating disk 38. A paint box 37 is fixedly connected between the two rotating columns 40 on one side of the storage seat 36, and both ends of the paint box 37 extend into the rotating column 40 through pipes and are rotatably connected to the rotating column 40. The two rotating columns 40 and the mobile nozzle 26 are connected by a connecting pipe 35, and the two connecting pipes 35 can be wound around the rotating column 40.

[0053] Specifically, when electrostatic spraying is performed on the processing plate 20, the paint in the paint box 37 is transported to the mobile nozzle 26 for spraying through the connecting pipe 35. When the mobile nozzle 26 moves and stretches the connecting pipe 35, the connecting pipe 35 rotates with the rotating column 40 to tighten and accumulate momentum of the spiral spring 41. When the mobile nozzle 26 moves and shortens the connecting pipe 35, the spiral spring 41 releases elastic potential energy to restore the initial relaxed state to rotate the rotating column 40, so that the connecting pipe 35 can be rewound around the rotating column 40, thereby preventing the connecting pipe 35 from being trapped and entangled in the spraying room 1 and affecting the spraying when the processing plate 20 is sprayed.

[0054] Working principle: When spraying metal plates, start the bidirectional motor 8 to drive the first threaded rod 9 to rotate so that the two clamping plates 7 move in the fixing box 6, and the clamping plate 7 moves to clamp the fixed metal plate, and the transfer plate 4 is lifted by the lifting hook on the lifting plate 3 to move the metal plate fixed by the clamping plate 7, start the transfer column 2 to drive the lifting plate 3 to place the metal plate in the spraying room 1, and close the spraying room 1 through the transfer plate 4, start the second motor 21 to drive the third threaded rod 22 to rotate so that the cleaning plate 23 slides up and down in the spraying room 1, and start the third motor 24 to drive the fourth threaded rod 25 The movable nozzle 26 is rotated to slide on the cleaning plate 23, so that the movable nozzle 26 can be reciprocated up and down in the spraying room 1 to electrostatically spray the processing plate 20; the first adsorption block 10 and the second adsorption block 19 also have the same positive charge as the processing plate 20, and the first adsorption block 10 and the second adsorption block 19 are set to be inclined blocks in a "blade" shape, and the first adsorption block 10 and the second adsorption block 19 have a strong electric field to compete with the plate edge of the processing plate 20 for the sprayed powder, so that the thickness of the powder adsorbed on the plate edge of the processing plate 20 can be consistent with the thickness of the powder on the plate surface;

[0055] When the cleaning plate 23 moves with the mobile nozzle 26 to spray the processing plate 20, the four sides of the cleaning plate 23 can scrape the powder adsorbed on the inner wall of the spray chamber 1 so as to recover the powder on the inner wall of the spray chamber 1, and at the same time, the powder adsorbed on the second adsorption blocks 19 on both sides can also be scraped; the mobile nozzle 26 moves with the first scraping block 28 to scrape the powder adsorbed on the upper and lower surfaces of both sides of the cleaning plate 23, and the powder adsorbed on the surface of the cleaning plate 23 is recovered; the mobile nozzle 26 can slide up and down on the connecting plate 33 and can also drive the connecting plate 33 to move left and right in the spray chamber 1, and the connecting plate 33 then drives the scraping plate 34 to move left and right to scrape the powder scattered at the bottom of the spray chamber 1 and the powder adsorbed on the second adsorption block 19 on the lower side; start the bidirectional motor 8 to make the two clamping plates 7 slide to scrape the powder adsorbed on the first adsorption block 10 The scraping is performed. When the two clamping plates 7 are closest to each other, the first motor 12 is started to drive the second threaded rod 13 to rotate so that the telescopic cylinder 14 slides on the cleaning frame 11, and the telescopic cylinder 14 moves with the cleaning block 15 to scrape the powder adsorbed on the clamping surfaces of the two clamping plates 7; when the telescopic cylinder 14 moves with the cleaning block 15, the scraping knife arranged obliquely at the end of the cleaning block 15 is used to scrape the position on the first adsorption block 10 that the clamping plate 7 cannot scrape again, and the cleaning block 15 slides in the telescopic cylinder 14 and compresses the first spring 17 through the fixed rod 16, so that the end of the cleaning block 15 can scrape the powder that the clamping plate 7 on the first adsorption block 10 cannot scrape; the sliding of the fixed rod 16 in the cleaning block 15 is restricted by the sliding of the convex block 18 in the cleaning block 15, so as to prevent the cleaning block 15 from sliding out of the telescopic cylinder 14, thereby ensuring that the cleaning block 15 scrapes the powder normally;

[0056] When scraping off the powder on the cleaning plate 23, the third motor 24 is started to drive the fourth threaded rod 25 to rotate so that the first bevel gear 29 in the rotating shell 43 rotates, and the first bevel gear 29 drives the second bevel gear 30 to rotate so that the reciprocating screw 31 rotates, and the reciprocating screw 31 rotates between the rotating shell 43 and the protective shell 42, so that the two sections of the reciprocating screw respectively carry a second scraping plate 32 to slide on both sides of the cleaning plate 23, and the powder on the upper and lower sides of the cleaning plate 23 is scraped off by the reciprocating movement of the second scraping block 32; when the processing plate 20 is electrostatically sprayed, The paint in the paint box 37 is transported to the mobile nozzle 26 for spraying through the connecting pipe 35. When the mobile nozzle 26 moves and stretches the connecting pipe 35, the connecting pipe 35 rotates with the rotating column 40 to tighten and accumulate momentum of the spiral spring 41. When the mobile nozzle 26 moves and shortens the connecting pipe 35, the spiral spring 41 releases elastic potential energy to restore the initial relaxed state to rotate the rotating column 40, so that the connecting pipe 35 can be rewound around the rotating column 40, thereby preventing the connecting pipe 35 from being trapped and entangled in the spraying room 1 when the spraying processing plate 20 affects the spraying.

[0057] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A metal sheet electrostatic spraying device, characterized in that: The invention comprises a spraying room (1), wherein a transfer column (2) is provided on one side of the spraying room (1), a lifting plate (3) is fixedly connected to one side of the transfer column (2), a lifting hook is provided on one side of the lifting plate (3), a transfer plate (4) is provided on one side of the lifting plate (3), a fixing box (6) is fixedly connected to one side of the transfer plate (4), a bidirectional motor (8) is fixedly connected to the middle of the fixing box (6), first threaded rods (9) are fixedly connected to both sides of the bidirectional motor (8), and two first threaded rods (9) are fixedly connected to each other. ) are rotatably connected to the fixing box (6), and the fixing box (6) is slidably connected to the two sides with a clamping plate (7), and the two clamping plates (7) are threadedly connected to the first threaded rod (9). The processing plate (20) is hoisted by the two clamping plates (7), and the transfer plate (4) is hoisted by the hoisting hook on one side of the hoisting plate (3), and the processing plate (20) between the clamping plates (7) is hoisted to the spraying room (1) for spraying. A cleaning plate (23) is slidably connected in the spraying room (1). ), the spray chamber (1) is fixedly connected to the lower side with two second motors (21), the output ends of the two second motors (21) are fixedly connected with third threaded rods (22), one ends of the two third threaded rods (22) are rotatably connected to the spray chamber (1), the two third threaded rods (22) are threadedly connected to the cleaning plate (23), the cleaning plate (23) is fixedly connected to third motors (24) on both sides, the output ends of the two third motors (24) are fixedly connected with fourth threaded rods (25), the cleaning plate (23) is fixedly connected to a rotating shell (43) on both sides, one ends of the two fourth threaded rods (25) are rotatably connected to the rotating shell (43), the cleaning plate (23) is slidably connected with movable spray heads (26) on both sides, the processing plate (20) can be electrostatically sprayed by the two movable spray heads (26), the two fourth threaded rods (25) are threadedly connected to the movable spray heads (26), and the spray chamber (1) is fixedly connected to disassembly plates (5) on both sides by bolts; A first adsorption block (10) is fixedly connected to the lower side of the fixed box (6), and the two clamping plates (7) are both slidably connected to the first adsorption block (10). A plurality of second adsorption blocks (19) are fixedly connected to one side of the processing plate (20) in the spray chamber (1), and the first adsorption block (10) and the plurality of second adsorption blocks (19) are both inclined blocks, so that the first adsorption block (10) and the plurality of second adsorption blocks (19) can compete to adsorb the coating at the four sides of the processing plate (20); A storage seat (36) is provided on one side of the spray chamber (1), and rotating disks (38) are fixedly connected on both sides of the storage seat (36), and a rotating column (40) is rotatably connected between the two rotating disks (38). One end of the two rotating columns (40) extends into the rotating disk (38) on one side, and one end of the two rotating columns (40) located in the rotating disk (38) is fixedly connected to one end of a spiral spring (41), and the other ends of the two spiral springs (41) are fixedly connected to the rotating disk (38). A paint box (37) is fixedly connected to one side of the storage seat (36) located between the two rotating columns (40), and both ends of the paint box (37) extend into the rotating column (40) through a pipeline and are rotatably connected to the rotating column (40). The two rotating columns (40) are connected to the movable spray head (26) through a connecting pipe (35), and the two connecting pipes (35) can be wound around the rotating column (40).

2. The electrostatic spraying equipment for metal sheets according to claim 1, characterized in that: Both sides of the cleaning plate (23) are in close contact with the inner side of the spray chamber (1), both sides of the cleaning plate (23) are provided with openings matching the second adsorption blocks (19), and the cleaning plate (23) is slidably connected to the second adsorption blocks (19) on both sides.

3. The electrostatic spraying equipment for metal sheets according to claim 2, characterized in that: A first scraping block (28) is fixedly connected to one side of the two movable nozzles (26), and the two first scraping blocks (28) are slidably connected to the cleaning plate (23).

4. The electrostatic spraying equipment for metal sheets according to claim 3, characterized in that: One side of the two movable nozzles (26) is slidably connected to a connecting plate (33), one end of the two connecting plates (33) is commonly fixedly connected to a scraping plate (34), the other ends of the two connecting plates (33) are slidably connected to the upper side of the spray chamber (1), the scraping plate (34) is slidably connected to the second adsorption block (19) at the lower side, and the scraping plate (34) is slidably connected to the lower side of the interior of the spray chamber (1).

5. The electrostatic spraying equipment for metal sheets according to claim 4, characterized in that: A cleaning frame (11) is fixedly connected to one side of the fixing box (6), a first motor (12) is fixedly connected to one side of the cleaning frame (11), a second threaded rod (13) is fixedly connected to the output end of the first motor (12), one end of the second threaded rod (13) is rotatably connected to the cleaning frame (11), a telescopic cylinder (14) is slidably connected inside the cleaning frame (11), and the telescopic cylinder (14) is threadedly connected to the first motor (12).

6. The electrostatic spraying equipment for metal sheets according to claim 5, characterized in that: A cleaning block (15) is slidably connected to the telescopic cylinder (14), and two fixing rods (16) are fixedly connected to the telescopic cylinder (14). The two fixing rods (16) are slidably connected to the cleaning block (15). A first spring (17) is sleeved on the two fixing rods (16), one end of the two first springs (17) is fixedly connected to the telescopic cylinder (14), and the other end of the two first springs (17) is fixedly connected to the cleaning block (15).

7. The electrostatic spraying equipment for metal sheets according to claim 6, characterized in that: One end of each of the two fixing rods (16) is fixedly connected with a protrusion (18), and the two protrusions (18) are slidably connected to the cleaning block (15).

8. The electrostatic spraying equipment for metal sheets according to claim 1, characterized in that: Two second scraping blocks (32) are slidably connected to both sides of the cleaning plate (23); protective shells (42) are sleeved on the outer sides of the two third motors (24); reciprocating screws (31) are rotatably connected between the two protective shells (42) and the rotating shell (43); one end of the two fourth threaded rods (25) is located in the rotating shell (43) and is fixedly connected to a first bevel gear (29); one end of the two reciprocating screws (31) is located in the rotating shell (43) and is fixedly connected to a second bevel gear (30); the two first bevel gears (29) are meshedly connected to the second bevel gear (30); and the two reciprocating screws (31) are threadedly connected to the second scraping blocks (32).

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