CN204710665U - Metal coiled material and the continuous powder spray production equipment of sheet material - Google Patents
Metal coiled material and the continuous powder spray production equipment of sheet material Download PDFInfo
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- CN204710665U CN204710665U CN201520109524.4U CN201520109524U CN204710665U CN 204710665 U CN204710665 U CN 204710665U CN 201520109524 U CN201520109524 U CN 201520109524U CN 204710665 U CN204710665 U CN 204710665U
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Abstract
The open metal coiled material of the utility model and the continuous powder spray production equipment of sheet material, comprise curing of coatings section unit.This unit comprises the curing of coatings stove of the powder room with import and outlet, sprayer locomotive that multiple stage coordinates with powder room and layout adjacent with powder room.Wherein: the sidewall being parallel to production line direction at room body is provided with the horizontal slots being communicated with import and outlet; Room body be arranged on frame-type mobile trolley used on; Be positioned at exit in room body and have end blow device, respectively have edge air curtain apparatus along substrate to be coated traffic direction width both sides; The cantilever beam of sprayer locomotive vehicle frame is provided with line source electrode electrostatic powder coating device.The utility model can carry out at high speed continuously electrostatic powder coating to substrate to be coated upper surface and/or lower surface and produce; there is covering protection mechanization, unit interval spray area is large; coated powder homogenising; maintenance, the advantage such as easy to maintenance; complement each other, make production run speed be increased to 120 ms/min.
Description
Technical field
The utility model relates to a kind of powder spray, particularly metal coiled material and the continuous powder spray production equipment of sheet material.
Background technology
Existing metal coiled material and the continuous powder spray production equipment of sheet material, comprising: the entrance unit arranged continuously on a production line, curing of coatings section unit and outlet section unit.Curing of coatings section unit comprises: the curing of coatings stove of the sprayer locomotive that powder room, multiple stage coordinate with powder room and layout adjacent with powder room.Wherein:
Powder room fixed installation on a production line, for enable substrate to be coated horizontally through, be respectively arranged with import, outlet perpendicular on the body two side, room in production line direction; For regularly cleaning the powder of the inner stick-down in powder room, facilitating repair and maintenance, the wherein sidewall in room body four sidewall is provided with door; For need of production, be parallel on the sidewall in production line direction or two sidewalls at room body and be provided with the sprayer perforate suitable with sprayer locomotive face shaping.Sprayer locomotive is frame structure, is arranged on the transmission side of production line or the ground of fore side.
In addition, sprayer to be manyly made up of spray gun perpendicular to production line direction is spaced apart multiple, for meeting continuous seepage, sprayer is parallel to interval, production line direction and arranges multiple row, carries out electrostatic powder coating in the unit interval to the substrate to be coated run in certain area simultaneously.For convenience of producing, the input cable of each for sprayer spray gun, tube cell are arranged on the framework of sprayer locomotive together with compressed air hose.
During spraying, multiple sprayer is positioned at surface or the below of substrate to be coated, powdery paints is as the coating media of substrate to be coated, negative electricity on the powder lotus that electrostatic generator makes the spray gun of each sprayer be arranged on multiple sprayer locomotive spray, positive electricity on metal base lotus, makes powder particle constantly fly to substrate to be coated surface by the attracting principle of positive negative electricity and is formed continuous coated; In spraying, be ensure product appearance quality, coverings protection carried out to the surface without the need to spraying, that is: artificial overlay film or paster is carried out to the surface without the need to spraying, avoid on the surface that is attached to do not spray because being descended slowly and lightly by the excessive powder of sprayed surface.After spraying, first artificial membrane removal or tear paster, then curing of coatings stove heats coating, dries.Its weak point is:
1, powder room can not be applicable to high-speed and continuous metal coiled material and sheet material production completely
Because powder room is fixed, substrate to be coated flatly runs turnover powder room continuously.In production, operating personnel's inconvenience enters body inside, room and carries out cleaning or overhauling, and shuts down and carry out cleaning or overhauling, and because substrate to be coated is still in powder room, hampers the work of operating personnel.
Because powder room cannot leave production line, in continuous seepage, when a kind of product of color reach certain batch need to carry out colour changing produce time, need first to stop producing about 30 minutes ~ 40 minutes, carry out colour changing, that is: carry out continuous seepage discontinuous operation system, have impact on productivity ratio.
2, manual overlay film, take off film, efficiency is low
Due in spraying or after spraying, be manually carry out " in advance overlay film, follow-up take off film " to the covering protection without the need to sprayed surface, working strength is large, and efficiency is low, have impact on the raising of curing of coatings section unit operation speed.
3, sprayer locomotive structure is fallen behind
Because sprayer locomotive is frame structure, each frame structure carries a limited number of spray gun, the gap ratio of the even Boulez of each spray gun is larger, the input cable of each spray gun, tube cell and compressed air hose all expose, be difficult to be arranged together, cannot to its protection and dust-proof, cannot integral demounting and replacing.
4, the powder spray amount of spray gun is little, coating quality is poor
Due in each sprayer, the rifle body that HV generator is arranged on spray gun is inner, produces electrostatic field at the jet expansion electrode place of spray gun.Electrode is generally a rectilinear wire and stretches out jet expansion a little, and guidewire tip is sharp shape; Concentrated by this tip and a bit produce high-voltage electrostatic field, be called that " point source " discharges, carry out charged to the powder of nozzle ejection.Because only a bit producing electric field by " point source " electric discharge in guidewire tip, so electrostatic field intensity is more weak, powder that can be charged in the unit interval is fewer.Again because body of spray gun rifle is little, can only built-in power is lower, volume is smaller electrostatic generator, so, often few for the electrostatic powder amount of spray gun ejection, cause the Area comparison that often spray gun can be sprayed within the unit interval little, have impact on the raising of curing of coatings section unit operation speed.Meanwhile, be even Boulez between each spray gun, distance is larger, in certain area, easily occur that the non-dusty spray of local is blank, have impact on the uniformity of coated powder in spraying.
Equally, for more existing adopt " line source " electrodes, its nozzle form to be the spray gun of annular umbrella-like, although its powder spray amount is larger than above-mentioned spray gun.When carrying out continuous print electrostatic powder coating to metal coiled material, distance between two spray guns of adjacent column or adjacent row is not easily at a distance of near, reason has two: first, spray tip electrode with high-pressure electrostatic, when two nozzle distances are near, if if some nozzles are because electric leakage or other reason have electrical potential difference between two nozzles, closely electric discharge phenomena can be produced because of distance, lose or reduce the electromotive force of nozzle, its charge capacity declines, and affects spraying because of the charged weak effect of powder; Electric discharge simultaneously can cause dust-firing or blast, makes to there is potential safety hazard in spraying.The second, because its nozzle is annular umbrella-like, the powder morphology sprayed becomes umbrella taper shape to amplify shape.When adjacent nozzle distance is near, powder ejection conical lower section edge can be assembled, intersects or mutually be interfered, make this place's powder local than other concentrated, measure greatly; The region causing the coating layer thickness in substrate to be coated powders region to be greater than powder not assembling, have impact on the uniformity of coated powder.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of metal coiled material and the continuous powder spray production equipment of sheet material, and its curing of coatings section unit operation speed is high, and coating quality is good.
The utility model metal coiled material and the continuous powder spray production equipment of sheet material, comprise curing of coatings section unit.This curing of coatings section unit comprises: the sprayer locomotive that powder room, multiple stage coordinate with powder room and the curing of coatings stove with the adjacent layout in described powder room; Described powder room comprises: the room body with import, outlet, and this room body is parallel on the sidewall in production line direction or two sidewalls and has sprayer perforate.Wherein:
The sidewall being parallel to production line direction at described room body is provided with the horizontal slots being communicated with described import and outlet, this horizontal slots place is provided with closing door.Described sprayer perforate is positioned at top and/or the below of described horizontal slots; Described room body be arranged on frame-type mobile trolley used on, this frame-type is mobile trolley used to be run on ground rail.
Be positioned at described exit in described room body to be provided with end blow device and to be respectively provided with edge air curtain apparatus along substrate to be coated traffic direction width both sides; Described end blow device and edge air curtain apparatus are arranged on and are connected to described room body sidewall or room body is ground is correspondingly connected and fixed in structure.
Described sprayer locomotive comprises: base and the vehicle frame be fixedly mounted on base, described vehicle frame is provided with cantilever beam, described cantilever beam is provided with sprayer, described sprayer is line source electrode electrostatic powder coating device, comprise: sprayer body, this sprayer body is provided with 2 ~ 100 tube cell pipe joints and the compressed air pipe joint being positioned at described tube cell pipe joint both sides.The electrode also comprising the nozzle below the spraying cavity being positioned at described sprayer body and be positioned at below this nozzle, the electrode of each sprayer is connected with the output cable of the electrostatic generator be placed in outside sprayer by being connected in parallel part; Or the electrode of each sprayer is connected with the electrostatic generator be placed in outside it separately.
The utility model metal coiled material and the continuous powder spray production equipment of sheet material, wherein: described end blow device comprises: hollow elongated tubular combination roof beam structure and mounted thereto one row's compressed-air atomizer.The crossbeam of described hollow elongated tubular combination roof beam structure is that multilayer hollow long tube overlap is fixedly connected with formation, porosely between each pipe communicates, or be one deck single tube structure, and its closed at both ends is also provided with rotating shaft, and this rotating shaft is arranged in revolute pair, and revolute pair is connected with regulating stock; Described compressed-air atomizer is vertically installed in the kernel of section of combination roof beam structure, perpendicular to combination roof beam structure length direction.
The utility model metal coiled material and the continuous powder spray production equipment of sheet material, wherein: described edge air curtain apparatus comprises: curved hollow long tube combination roof beam structure and mounted thereto one row's compressed-air atomizer.The crossbeam of described curved hollow long tube combination roof beam structure is that multilayer hollow long tube overlap is fixedly connected with formation, porosely between each pipe to communicate, or be one deck single tube structure, its closed at both ends, respectively be provided with active support at its two ends, this active support comprise ball pivot and with hinged support bar, this support bar is installed in the ground revolute pair of powder room sidewall or powder room, installation shaft and the curved hollow long tube of described ball pivot combine roof beam structure and are connected, and described support bar is provided with Collapsible structure; Described compressed-air atomizer is vertically installed in the kernel of section of combination roof beam structure, perpendicular to combination roof beam structure length direction.
The utility model metal coiled material and the continuous powder spray production equipment of sheet material, wherein: described compressed-air atomizer comprises: outer layer sleeve, middle casing and center piston.Described outer layer sleeve is fixedly mounted on it through combination roof beam structure, described outer layer sleeve have the one or more passages communicated with the outermost layer pipe of combination roof beam structure, the endoporus at these outer tube two ends respectively has one section of internal thread, the lower end of described middle casing is porose, upper end endoporus has internal thread, its two ends outer surface has external screw thread, with described outer tube thread connection; Described middle casing have the passage corresponding with the passage of described outer layer sleeve; The upper end of described center piston has external screw thread, and connect with described middle casing afterbody internal thread, described center piston stretches into the passage bottom of described middle casing.The afterbody of above-mentioned middle casing and described center piston is equipped with locking nut, or directly opens circular hole in the close side of described hollow elongated tubular and substrate to be coated surface, or opens elongated hole.
The utility model metal coiled material and the continuous powder spray production equipment of sheet material, wherein: the spray orifice of described sprayer nozzle is a length shape spray seam, this spray seam cross section, both sides is parallel lines, or the splayed of less entrance and bigger exit or tubaeform, described splayed both sides are straight lines, or curve, no matter be splayed or tubaeform, be all symmetrical arranged along sprayer center line about it.
The utility model metal coiled material and the continuous powder spray production equipment of sheet material, wherein: the hole of described tube cell pipe joint and the hole of air compressor first, second efferent duct suitable, the hole of the hole of described compressed air pipe joint and the efferent duct of air compressor third is suitable.Each described air compressor comprises: gas tank, and with the tank connected input pipe of gas and efferent duct, the top of described gas tank is cylinder, and bottom is inverted cone; Described input pipe is connected with described inverted cone is vertical by bending pipeline, described efferent duct is multichannel, the top of described gas tank is arranged in symmetrically around tank body center line, the caliber of each road efferent duct is identical, arrival end next-door neighbour is arranged in described gas tank, the centerline of close described gas tank, and the port of export is through the tank skin of described gas tank.
The utility model metal coiled material and the continuous powder spray production equipment of sheet material, wherein: it is mobile trolley used upper or install on the ground that described sprayer locomotive is arranged on described frame-type.Described base has wheel, and the shape of described vehicle frame is inverted " U " shape, two columns is set with along the upper and lower sliding support moved of vehicle frame; Described cantilever beam is arranged on the one or both sides of this sliding support, screw lift is provided with between two columns of described base upper frame, be provided with the drive link be arranged in sliding pair supporting seat between this screw lift and described cantilever beam, described sliding pair supporting seat is arranged on the inner side of a column of described inverted " U " shape vehicle frame.
The utility model metal coiled material and the continuous powder spray production equipment of sheet material have the following advantages and beneficial effect:
1, owing to devising the horizontal slots being parallel to production line direction on room body, import and the outlet of this horizontal slots and room body are interconnected, and room body is arranged on frame-type mobile trolley used on, thus room body can either be made perpendicular to production line direction shift-in, meet continuous seepage; Room body can be made again to shift out perpendicular to production line direction, and handled easily personnel off-line carries out dust cleaning and maintenance to room body.
Owing to devising closing door again at horizontal slots place, spraying closes closing door in producing, and makes horizontal slots be in closure state, that is: reduce powder room and the extraneous passage that circulates or flow area, thus obstruction wafts and brims with the excessive powder room of powder, ground, reduces pollution on the environment.
In addition, if also design on frame-type is mobile trolley used by multiple stage sprayer locomotive, that is: powder room is vehicle-mounted removable together with the multiple stage sprayer locomotive be mated, and is positioned at the transmission side of production.The benefit of such design is: arrange a powder room for subsequent use outward in addition at production line, sprayer locomotive for subsequent use that multiple stage coordinates with powder room for subsequent use.When a kind of product of color reach certain batch need to carry out colour changing produce time; powder room for subsequent use can be enabled, sprayer locomotive for subsequent use that multiple stage coordinates with powder room for subsequent use; carry out continuous seepage and wait for duty in turn; colour changing can not shut down on the production line of continuous spray; spraying diversification of varieties; meet the need of market, production efficiency is high.
2, owing to devising end blow device in exit, powder room, in spraying, its nozzle blowout clean compressed air, can clean the unnecessary electrostatic powder be attached to without the need on sprayed surface that causes descending slowly and lightly because of factors such as gas flowings, makes the clean surface without the need to spraying higher.
Owing to respectively devising edge air curtain apparatus in inside, powder room along substrate to be coated traffic direction width both sides, in spraying, its nozzle blowout clean compressed air, form air curtain, floating not clear particle or dust in outside, powder room, air can not only be blocked, and can purge and be attached to the electrostatic powder of substrate to be coated edge because the factors such as gas flowing cause descending slowly and lightly, make the edge cleaning of substrate to be coated higher.
Above-mentioned cleaning, to block and purging achieves mechanization, quality is good, and efficiency is high, lays a good foundation for realizing continuous spray at high speed.
3, because sprayer locomotive has vehicle frame, devise cantilever beam in the one or both sides of vehicle frame, this cantilever beam can either install fixing sprayer, again when having two cantilever beams, each sprayer interval is compacter, can arrange more sprayer in unit are; By concentrated storages such as the input cable of each sprayer, tube cell and compressed air hoses, in spraying, can also also have dustproof effect, and convenient maintenance and replacing.Equally, lay a good foundation for realizing continuous spray at high speed.
4, owing to devising multiple tube cell pipe joint and compressed air pipe joint on sprayer body, that is: what prior art be arranged side by side along substrate to be coated width interval is manyly integrated gun design, length and the substrate to be coated width of the straight line elongated gap of its nozzle are suitable, the non-powder spray of local between two nozzles not only can be avoided blank, also can eliminate powders, intersection or the interference between two nozzle spraying edges, coated powder uniformity is improved.
Meanwhile, be " line source " electrode of a length shape by the electrode design be positioned at below nozzle, the length of being somebody's turn to do " line source " electrode is longer than prior art spray gun " point source " electrode, enhances the electric-field intensity between powder and substrate to be coated; And the electric discharge phenomena avoided between prior art two " line source " nozzles, improve powder charge capacity, can charged more powder within the unit interval.
Further, be designed to external by the electrostatic generator of sprayer, can use powerful electrostatic generator, the carrying capacity that sprayer is carried increases, and provides guarantee for improving powder spray amount in the unit interval.
5, the many shunt owing to being designed to the air compressor of conveying powder to have equivalent equably export gas tanks, can the relatively consistent compressed air of the state such as output pressure, flow, for sprayer can spray evenly, the powder of equivalent provides necessary condition.
6, because the utility model metal coiled material and the continuous powder spray production equipment of sheet material are mainly for the improvement that the curing of coatings section unit on production line in prior art carries out, thus metal coiled material in this utility model and sheet material continuous powder spray production equipment both may be used for the continuous electrostatic powder coating that substrate to be coated is the interrupted steel plate of plane, aluminium sheet, also may be used for the continuous electrostatic powder coating that substrate to be coated is coil of strip, aluminium volume, a tractor serves several purposes, market is widely used.
In sum; the utility model metal coiled material and the continuous powder spray production equipment of sheet material; electrostatic powder coating continuously can be carried out to substrate to be coated upper surface or lower surface to produce; or the electrostatic powder coating continuously upper and lower two surfaces of substrate to be coated being carried out to same color is produced; there is covering protection mechanization, unit interval spray area is large; coated powder homogenising; maintenance, the plurality of advantages such as easy to maintenance; complement each other; achieve continuous electrostatic powder coating at high speed; make production run speed be increased to 120 ms/min, coating quality is good.
Accompanying drawing explanation
Fig. 1 is that the continuous powder spray production equipment of metal coiled material described in the utility model and sheet material arranges schematic diagram on a production line continuously, and diagram is the continuous powder coating production line of coil of strip;
Fig. 2 is that in Fig. 1, part curing of coatings section unit arranges schematic diagram on a production line, and for carrying out the offline standby production spraying group of colour changing;
Fig. 3 is powder room structural representation in Fig. 2;
Fig. 4 is the end blow device and the edge air curtain apparatus layout schematic diagram that are positioned at inside, powder room in Fig. 2;
Fig. 4 a is the structural representation of the end blow device of Fig. 4 shown device;
Fig. 4 b is the structural representation of the edge air curtain apparatus of Fig. 4 shown device;
Fig. 4 c is the nozzle arrangements signal of Fig. 4 shown device;
Fig. 4 d is the beam main pipe progressively flow dividing structure schematic diagram of Fig. 4 shown device;
Fig. 5 is the locomotive structural representation in Fig. 2 with sprayer;
Fig. 6 is sprayer structural representation in Fig. 5;
Fig. 7 is air compressor structural representation in Fig. 2;
Fig. 7 a is A-A cut-away view in Fig. 7, represents efferent duct distribution schematic diagram;
Fig. 7 b is that connection diagram installed by air compressor and sprayer;
Description of reference numerals:
1 entrance unit, 2 curing of coatings section units, 3 outlet section units, 4 uncoilers, 5 entrance transverse cutting units, 6 teaser or tails sew up with or bonding machine, 7 chemistry table adjust grooves, 8 cleaning by degreasing section equipment, 9 chemical roll coaters, 10 drying ovens, 13 sprayers, 14 curing ovens, 15 cooling devices, 16 outlet loopings, 17 protections or decoration membrane laminating machine, 18 outlet cross cut shears, 19 coiling machines, 20 substrates to be coated, 28 powder rooms, 33 sprayer locomotives;
301 room bodies, 302 closing doors, 303 horizontal slots, 304 imports, 306 sprayer perforates, 309 frame-types are mobile trolley used, 310 ground rails, 311 outlets,
403 end blow devices, 405 substrate to be coated traffic directions, 406 edge air curtain apparatus, 407 compressed-air atomizers, 408 ground, 409 hollow elongated tubular combination roof beams structure, 410 rotating shafts, 411 revolute pairs, 412 regulate stock, 413 are connected and fixed structure, 414 curved hollow long tube combination roof beams structure, 415 ball pivots, 416 support bars, 417 revolute pairs, 418 Collapsible structures, 419 installation shaft, 420 outer layer sleeves, 421 passages, 422 middle casings, 423 center piston, 424 locking nuts, 425 compressed air inlets, 426 nozzle vent;
502 cantilever beams, 503 drive links, 504 screw lifts, 505 wheels, 507 sliding pair supporting seats, 520 bases, 521 inverted " U " shape vehicle frame, 522 sliding supports;
601 tube cells, 602 compressed air hoses, 603 tube cell pipe joints, 604 compressed air pipe joints, 605 spraying cavitys, 606 passages, 607 nozzles, 608 electrodes, 616 sprayer bodies;
701 gas tanks, 702 inverted cones, 703 air compressor efferent ducts, 704 flow-disturbing combing parts, 705 bending pipelines, 707 venturi pumps, 708 atomization organ pipes, 709 boosting organ pipes, 710 tube connectors, 713 tube connectors, 714 input pipes.
Detailed description of the invention
Below in conjunction with accompanying drawing, metal coiled material of the present utility model and the continuous powder spray production equipment of sheet material are described further.
Shown in Figure 1, be metal coiled material described in the utility model and the continuous powder spray production equipment of sheet material, comprise: the entrance unit 1 of the continuous layout on substrate to be coated 20 production line, curing of coatings section unit 2 and outlet section unit 3.Wherein:
Shown in Figure 2, described curing of coatings section unit, comprises powder room 28, sprayer locomotive 33 that multiple stage coordinates with powder room 28 and the curing oven 14 with the adjacent layout in described powder room 28.Wherein:
For adapting at high speed electrostatic powder coating continuously, shown in Figure 3, described powder room 28 comprises: have import 304, export the room body 301 of 311 and have the frame-type mobile trolley used 309 of driving mechanism; The sidewall being parallel to production line direction at described room body 301 is provided with the horizontal slots 303 being communicated with described import 304 and outlet 311, this horizontal slots place is provided with closing door 302, spraying closes closing door in producing, horizontal slots is made to be in closure state, hinder the excessive powder room of powder, elegant ground, reduce pollution on the environment.Be parallel on the sidewall in production line direction or two sidewalls at described room body 301 and be provided with sprayer perforate 306, the quantity of its sprayer perforate is identical with the quantity of sprayer locomotive 33, its configuration quantity number should determine according to the width of the speed of service of substrate to be coated, substrate to be coated and coating layer thickness.。Described sprayer perforate 306 is positioned at top and/or the below of described horizontal slots 303.Described room body 301 is arranged on frame-type mobile trolley used 309, and this frame-type mobile trolley used 309 runs on ground rail 310.Like this, powder room can not only meet continuous electrostatic powder coating and produce, and can shift out production line, for maintenance provides wide space.
According to the condition of production, the sprayer aperture layout in powder room has multiple pattern, that is: except top, the below of horizontal slots 303 can be arranged on, also can above and below perforate simultaneously.
In addition, above-mentioned curing of coatings section unit can carry out front, the back side and homochromy two-sided electrostatic powder coating to substrate to be coated.But, when a kind of spraying of color reaches certain batch, then stop production run carrying out colour changing work.Not enough for overcoming this, above-mentioned powder room is arranged on frame-type mobile trolley used 309 together with the multiple stage sprayer locomotive be mated, is positioned at the fore side of production, and prepare two covers, carry out and wait for duty in turn.Like this, during production, drive wherein a set of frame-type mobile trolley used 309, make powder room and sprayer locomotive shift-in production line thereof, sprayer on-line spray; When colour changing, maintenance, this cover shifts out production line, drives wherein another set of frame-type mobile trolley used 309 simultaneously, makes another set of powder room and sprayer locomotive shift-in production line thereof, another set of sprayer on-line spray.Thus achieve colour changing easily in continuous spray is produced, spraying diversification of varieties, improve material production efficiency.
For improving spraying effect, shown in Figure 4, be positioned at described outlet 311 place in described room body 301 and be provided with end blow device 403, respectively be provided with edge air curtain apparatus 406 with along substrate to be coated 20 traffic direction 405 width both sides, described end blow device 403 and edge air curtain apparatus 406 are arranged on be connected on described room body 301 sidewall or body ground, room 408 corresponding and are connected and fixed in structure 413.Like this; use motorisation unit; in spraying, non-sprayed surface is cleaned; in spraying, form air curtain in the edge of substrate to be coated, block floating not clear particle or dust in outside, powder room, air and enter stop, purge simultaneously and be attached to substrate to be coated edge electrostatic powder because the factors such as gas flowing cause descending slowly and lightly; both ensure that the overall cleanliness factor of substrate to be coated; improve substrate to be coated ground coating quality, hiding again protective efficacy high, laying a good foundation for realizing continuous spray at high speed.
Shown in Fig. 4 a, above-mentioned end blow device 403 comprises: hollow elongated tubular combination roof beam structure 409 and mounted thereto one row's compressed-air atomizer 407.Described hollow elongated tubular combines the crossbeam closed at both ends of roof beam structure 409 and is provided with rotating shaft 410, and this rotating shaft 410 is arranged in revolute pair 411, and revolute pair 411 is connected with adjustment stock 412.Described compressed-air atomizer 407 is vertically installed in the kernel of section of combination roof beam structure, perpendicular to combination roof beam structure length direction.Like this, rotate and regulate stock 412, making hollow elongated tubular combine roof beam structure 409 can either vertically move up and down on substrate to be coated surface, regulates compressed-air atomizer 407 and substrate to be coated distance; Also can make along its crossbeam length direction transverse shifting, the empty nozzle 407 of compression is regulated to rotate two ends revolute pair 411 along the vertical direction of substrate to be coated traffic direction, make hollow elongated tubular combine roof beam structure 409 and can also horizontally rotate swing, regulate compressed-air atomizer 407 and substrate to be coated 20 surface angle.Thus ensure that cleaning quality, achieve efficient mechanical.
Shown in Fig. 4 b, above-mentioned edge air curtain apparatus 406 comprises: curved hollow long tube combination roof beam structure 414 and mounted thereto one row's compressed-air atomizer 407.The crossbeam closed at both ends of described bending long tube combination roof beam structure 414, is respectively provided with active support at its two ends.This active support comprise ball pivot 415 and with hinged support bar 416, this support bar 416 is installed in the ground revolute pair 417 of powder room sidewall or powder room, and installation shaft 19 and the curved hollow long tube of described ball pivot combine roof beam structure and be connected.Described support bar 416 is provided with Collapsible structure 418.Described compressed-air atomizer 407 is vertically installed in the kernel of section of combination roof beam structure, perpendicular to combination roof beam structure length direction.Like this, rotary support bar 416, makes curved hollow long tube combine roof beam structure 414 and is elevated, regulate the distance of compressed-air atomizer 407 and substrate to be coated 20; Rotary support bar 416 swings along rotating shaft 419, regulates compressed-air atomizer 407 and substrate to be coated surface angle; Stretching structure 418 on rotary support bar 416, regulates the distance of compressed-air atomizer 407 and substrate to be coated 20 edge.Thus ensure that and block and purge quality, achieve efficient mechanical.
Above-mentioned hollow elongated tubular combination roof beam structure 409 and curved hollow long tube combination roof beam structure 414 can arrange a row respectively.For ensureing cleaning further, blocking and purge effect, need increase air pressure blows and sprays a little, can along substrate to be coated traffic direction and in substrate to be coated width range parallel direction increase the row of hollow bend pipe combination beam and hollow elongated tubular combination beam, set up at most to 3 rows.As shown in figure 4d, the agent structure of the combination roof beam structure 6,14 of described end blow device and edge air curtain apparatus is that multilayer pipe is superimposed formation, compressed air passes into from compressed air inlet, outermost layer pipe one or both ends 25, and in figure, arrow is compressed air shunting trend.
See Fig. 4 c, above-mentioned compressed-air atomizer 407 is vertically installed in the kernel of section of combination roof beam structure 409 and 414, perpendicular to combination roof beam structure length direction.This compressed-air atomizer 407 comprises: outer layer sleeve 420, middle casing 422 and center piston 423.Described outer layer sleeve 420 is fixedly mounted on it through combination roof beam structure, generally takes welding or bonding, to ensure that compressed air is not revealed.Described outer layer sleeve has the one or more passages 421 communicated with the outermost layer pipe of combination roof beam structure, the compressed air in outermost layer hollow tube can be made to enter.The endoporus at these outer tube two ends respectively has one section of internal thread.The lower end of described middle casing 422 is porose, is spout 426, and upper end endoporus has internal thread, and its two ends outer surface has external screw thread, with outer layer sleeve 420 thread connection; By rotate middle casing, realize nozzle shaft up and down movement stretch, regulate compressed-air atomizer spout 426 apart from substrate to be coated 20 surface distance.Meanwhile, described middle casing 422 have the passage corresponding with the passage 421 of described outer layer sleeve 420.Like this, the compressed air combined in roof beam structure 409 and 414 can enter nozzle 407.The upper end of described center piston 423 has external screw thread, connect with described middle casing 422 afterbody internal thread, center piston 423 stretches into the passage bottom of described middle casing 422, rotary-piston, make it move up and down, partly or entirely can block the passage 421 of middle casing 422, realize the change of through hole flow area, regulate the air mass flow entering nozzle body.When all blocking, nozzle is closed.The afterbody of above-mentioned middle casing 422 and described center piston is equipped with locking nut 424, for locking after flexible, making it to maintain static.
Certainly, be simplify structure, directly set circular hole in the side that described hollow elongated tubular and substrate to be coated 20 are surperficial close or open elongated hole.
The quantity of above-mentioned compressed-air atomizer 407 is according to sprayed substrate to be coated width, and the coverage rate of nozzle and the thickness of spraying are determined, the distance between each nozzle is 5 centimetres ~ 100 centimetres.
During installation, above-mentioned end blow device and edge air curtain apparatus and sprayer should be separately positioned on above or below substrate to be coated 20, that is: when carrying out front electrostatic powder coating, above-mentioned end blow device and edge air curtain apparatus are arranged on below substrate to be coated, compressed-air atomizer 407 is directed upwardly, and cleans, air curtain to the substrate to be coated back side and edge.In like manner, when carrying out back side electrostatic powder coating, above-mentioned end blow device and edge air curtain apparatus are arranged on above substrate to be coated, and compressed-air atomizer 407 direction down, to be cleaned substrate to be coated front and edge, air curtain.
For adapting to high-speed and continuous spraying, shown in Figure 5, described sprayer locomotive 33 comprises: base 520 and the vehicle frame 521 be fixedly mounted on base, the one or both sides of described vehicle frame 521 are provided with cantilever beam 502, and described cantilever beam 502 is provided with sprayer 13.
Above-mentioned sprayer locomotive 33 is arranged on described frame-type mobile trolley used 309, described base 520 has wheel 505, the shape of described vehicle frame 521 is inverted " U " shape, two columns are set with along on vehicle frame, the sliding support 422 of lower motion, described cantilever beam 502 is arranged on the one or both sides of this sliding support 522, screw lift 404 is provided with between two columns of described base upper frame, the drive link 403 be arranged in sliding pair supporting seat 507 is provided with between this screw lift 504 and described cantilever beam 502, described sliding pair supporting seat 507 is arranged on the inner side of a column of described inverted " U " shape vehicle frame 521.Like this, on the one hand sprayer locomotive 33 and sprayer 13 can along with shift-in production lines rapidly together with powder room, the adjustment nozzle of sprayer and the distance on substrate to be coated surface, guarantee coating quality.Equally, sprayer locomotive 33 can shift out production line rapidly with sprayer 13 together with powder room, carries out maintenance and subsequent production preparation.Two aspects, two cantilever beams can install two sprayers simultaneously, make each sprayer interval compacter, can arrange more sprayer in unit are.Three aspects, cantilever beam can concentrate input cable, tube cell 601 and the compressed air hose 602 etc. of receiving sprayer, has both had dustproof effect, again convenient maintenance and replacing.In a word, above-mentioned sprayer locomotive 33 is similarly and realizes continuous spray at high speed and lay a good foundation.
For improving the powder spray amount of each sprayer, see Fig. 6, above-mentioned sprayer is line source electrode electrostatic powder coating device, comprise: sprayer body, described sprayer body has the hole of the pipe joint 603 installing tube cell 601 and the joint 604 installing compressed air hose 602, cavity 605 top of installing tube cell pipe joint is circular apertures, bottom is set to long flat seam type spray seam 607, it is that the metal material of knife-edge is " line source " electrode 608 that the both sides of this slit through hole 607 stud with cross section, is all symmetrical arranged along sprayer center line about it.When " line source " electrode accesses external HV generator, above-mentioned sprayer is equivalent to the many of prior art to collect in a row densely covered for spray gun, " line source " electrode continues as same group of a lot " point source " electrode, and its charge capacity is several times as much as " point source " electrode of prior art.Described line source electrode is elongated shape, can be an one metal wire electrode, can be the metal material of knife-edge, can be the similar leg-of-mutton metal material of knife-edge metal material or cross section with zigzag fashion.
For improving the charged amount of powder of each sprayer further, the spray orifice of above-mentioned sprayer nozzle 607 is a length shape spray seam, and this spray seam cross section, both sides is parallel lines; Or the splayed of less entrance and bigger exit or tubaeform, described splayed both sides are straight lines; Or curve.No matter be splayed or tubaeform, be all symmetrical arranged along sprayer center line about it.
Like this, the electrostatic field adopting " line source " electrode to produce, can meet and carry out charged requirement to a large amount of powder of ejection, and raising powder spray ability, is applicable to metal coiled material and the continuous powder spray production equipment of sheet material carries out continuous spray at high speed.
Meanwhile, external electrostatic generator can be accomplished to be greater than the many summation of built-in for spray gun electrostatic generator power of prior art, can apply larger charge capacity to sprayer of the present utility model " line source " electrode.
For ensureing the spraying of powder homogenising, the hole of described tube cell pipe joint 503 and the hole of air compressor first, second efferent duct 703 suitable, the hole of the hole of described compressed air pipe joint 504 and the efferent duct 703 of air compressor third is suitable.Shown in Fig. 7, Fig. 7 a, each described air compressor comprises: gas tank 701, with the tank connected input pipe 714 of gas and efferent duct 703.The top of described gas tank 701 is cylinder, bottom is inverted cone 702, described input pipe 714 is connected with described inverted cone 702 is vertical by bending pipeline 705, described efferent duct 703 is multichannel, the top of described gas tank 701 is arranged in symmetrically around tank body center line, the caliber of each road efferent duct 703 is identical, and arrival end next-door neighbour is arranged in described gas tank 701, the centerline of close described gas tank 701, and the port of export is through the tank skin of described gas tank 701.
Like this, many shunt export gas tank can equably equivalent provide the compressed air that the state such as pressure, flow is relatively consistent for each sprayer, make all sprayers connect the identical for powder pressure of venturi pump 707, when carrying out high speed electrostatic powder coating, the electrostatic powder of each sprayer ejection is consistent.
For ensureing that powder homogenising sprays further, in described gas tank 701, be positioned at described inverted cone 702 place and be also provided with horizontally disposed flow-disturbing combing part 704, this flow-disturbing combing part 704 is 1 ~ 6, has and is uniformly distributed mesh shape or multiple hole shape.
During installation, shown in Fig. 7 b, the tube cell pipe joint 503 of described sprayer 13 is connected with the efferent duct of venturi pump 707 by tube connector 710, and atomization organ pipe 708, the boosting organ pipe 709 of this venturi pump 707 are connected in series respectively by the efferent duct 703 of tube connector 713 with air compressor first, second.Described sprayer 13 compressed air pipe joint 504 tube connector is connected with the efferent duct 703 of air compressor third.
Above-mentioned substrate to be coated can be the interrupted steel plate of plane, aluminium sheet, also can be coil of strip, aluminium volume.The interrupted steel plate of plane, aluminium sheet are rolled up to spray from coil of strip, aluminium and are produced except substrate to be coated is different, also have any different: one, be arranged in curing of coatings section unit before entrance unit 1 and outlet section unit 3 after being positioned at curing of coatings section unit arrange different, two, interrupted steel plate, aluminium sheet are held up through powder room by chain, and coil of strip, aluminium volume horizontal hanging scale lever is through powder room.Metal coiled material described in the utility model and the continuous powder spray production equipment of sheet material are mainly for the improvement that the curing of coatings section unit on production line in prior art carries out, thus the utility model metal coiled material and sheet material continuous powder spray production equipment not only may be used for the continuous electrostatic powder coating that substrate to be coated is the interrupted steel plate of plane, aluminium sheet, also may be used for the continuous electrostatic powder coating that substrate to be coated is coil of strip, aluminium volume, a tractor serves several purposes, market is widely used.
During work, see Fig. 1, before spraying substrate to be coated 20 to be sprayed enter the uncoiler 4 of adjacent layout successively in entrance unit 1, entrance transverse cutting unit 5, teaser or tail sew up with or bonding machine 6, entry loop 7, cleaning by degreasing section equipment 8, chemical roll coater 9 and drying oven 10, cleaning by degreasing and chemical treatment are carried out to substrate to be coated surface to be sprayed.
In spraying, substrate to be coated 20 enters the import 304 in powder room in curing of coatings section unit 2, outlet 311 and the import of curing oven 14, outlet, carries out application and coating heating, drying, solidification.That is: according to sprayed product, multiple sprayers of curing of coatings section unit 2 spray substrate to be coated 20 front or the back side or homochromy two-sided simultaneously, and the coating of curing oven 14 to spraying carries out heating, drying, solidification.
The substrate to be coated 20 sprayed after spraying enters the cooling device 15 of adjacent layout successively in outlet section unit 3, outlet looping 16, protection or decoration laminating machine 17, outlet cross cut shears 18 and at least one coiling machine 19, to the substrate to be coated sprayed carry out protectiveness overlay film, shear, batch or the product handling system of dull and stereotyped packaging.
In addition, no matter be one side spraying or double-face spray painting, when the substrate to be coated of application reaches certain batch, when needing to carry out colour changing in continuous seepage, the sprayer locomotive 33 withdrawn from the powder room on production line and be mated, be replaced by and be loaded with the offline standby powder room needing other color of spraying and the sprayer locomotive 33 be mated, so repeatedly carry out.Thus make the substrate to be coated of each batch have different colors, meet the need of market.
Claims (11)
1. a metal coiled material and the continuous powder spray production equipment of sheet material, comprise curing of coatings section unit (2), this curing of coatings section unit (2) comprises powder room (28), the sprayer locomotive (33) that multiple stage coordinates with powder room (28) and the curing of coatings stove (14) with the adjacent layout of described powder room (28), described powder room (28) comprising: have import (304), the room body (301) of outlet (311), this room body (301) is parallel on the sidewall in production line direction or two sidewalls and has sprayer perforate (306), it is characterized in that:
The sidewall being parallel to production line direction in described room body (301) is provided with the horizontal slots (303) being communicated with described import (304) and exporting (311), this horizontal slots place is provided with closing door (302), and described sprayer perforate (306) is positioned at top and/or the below of described horizontal slots (303); Described room body (301) is arranged on frame-type mobile trolley used (309), and this frame-type mobile trolley used (309) is in the upper operation of ground rail (310);
Be positioned at described outlet (311) place in described room body (301) and be provided with end blow device (403), respectively be provided with edge air curtain apparatus (406) with along substrate to be coated (20) traffic direction (405) width both sides, described end blow device (403) and edge air curtain apparatus (406) are arranged on be connected on described room body (301) sidewall or body ground, room (408) corresponding and are connected and fixed in structure (413);
Described sprayer locomotive (33) comprising: base (520) and the vehicle frame (521) be fixedly mounted on base, described vehicle frame (521) is provided with cantilever beam (502), described cantilever beam (502) is provided with sprayer (13), described sprayer is line source electrode electrostatic powder coating device, comprise: sprayer body, this sprayer body (616) is provided with 2 ~ 100 tube cell pipe joints (603) and is positioned at the compressed air pipe joint (604) of described tube cell pipe joint (603) both sides; The nozzle (607) also comprising spraying cavity (605) below being positioned at described sprayer body and the electrode (608) be positioned at below this nozzle, the electrode (608) of each sprayer (13) is connected with the output cable (702) of the electrostatic generator (701) be placed in outside sprayer by being connected in parallel part (703); Or the electrode (608) of each sprayer (13) is connected with the electrostatic generator be placed in outside it separately.
2. metal coiled material according to claim 1 and the continuous powder spray production equipment of sheet material, it is characterized in that: described end blow device (403) comprising: hollow elongated tubular combination roof beam structure (409) and mounted thereto one row's compressed-air atomizer (407), the crossbeam of described hollow elongated tubular combination roof beam structure (409) is that multilayer hollow long tube overlap is fixedly connected with formation, porosely between each pipe to communicate, or be one deck single tube structure, its closed at both ends is also provided with rotating shaft (410), this rotating shaft (410) is arranged in revolute pair (411), revolute pair (411) is connected with adjustment stock (412), described compressed-air atomizer (407) is vertically installed in the kernel of section of combination roof beam structure, perpendicular to combination roof beam structure length direction.
3. metal coiled material according to claim 1 and 2 and the continuous powder spray production equipment of sheet material, it is characterized in that: described edge air curtain apparatus (406) comprising: curved hollow long tube combination roof beam structure (414) and mounted thereto one row's compressed-air atomizer (407), the crossbeam of described curved hollow long tube combination roof beam structure (414) is that multilayer hollow long tube overlap is fixedly connected with formation, porosely between each pipe to communicate, or be one deck single tube structure, its closed at both ends, respectively active support is provided with at its two ends, this active support comprise ball pivot (415) and with hinged support bar (416), this support bar (416) is installed in the revolute pair (417) on powder room sidewall or powder premises face (408), installation shaft (419) and the curved hollow long tube of described ball pivot combine roof beam structure and are connected, described support bar (416) is provided with Collapsible structure (418), described compressed-air atomizer (407) is vertically installed in the kernel of section of combination roof beam structure, perpendicular to combination roof beam structure length direction.
4. metal coiled material according to claim 2 and the continuous powder spray production equipment of sheet material, it is characterized in that: described compressed-air atomizer (407) comprising: outer layer sleeve (420), middle casing (422) and center piston (423), described outer layer sleeve (420) is fixedly mounted on it through combination roof beam structure, described outer layer sleeve have the one or more passages (421) communicated with the outermost layer pipe of combination roof beam structure, the endoporus at these outer tube two ends respectively has one section of internal thread, the lower end of described middle casing (422) is porose, upper end endoporus has internal thread, its two ends outer surface has external screw thread, with described outer tube (420) thread connection, described middle casing (422) have the passage corresponding with the passage of described outer layer sleeve (420) (421), the upper end of described center piston (423) has external screw thread, connect with described middle casing (422) afterbody internal thread, described center piston (423) stretches into the passage bottom of described middle casing (422), the afterbody of above-mentioned middle casing (422) and described center piston is equipped with locking nut, or directly open circular hole in the close side of described hollow elongated tubular and substrate to be coated (20) surface, or open elongated hole.
5. metal coiled material according to claim 3 and the continuous powder spray production equipment of sheet material, it is characterized in that: described compressed-air atomizer (407) comprising: outer layer sleeve (420), middle casing (422) and center piston (423), described outer layer sleeve (420) is fixedly mounted on it through combination roof beam structure, described outer layer sleeve have one or more passages (421) communicated with the outermost layer pipe of combination roof beam structure, the endoporus at these outer tube two ends respectively has one section of internal thread, the lower end of described middle casing (422) is porose, upper end endoporus has internal thread, its two ends outer surface has external screw thread, with described outer tube (420) thread connection, described middle casing (422) have the passage corresponding with the passage of described outer layer sleeve (420) (421), the upper end of described center piston (423) has external screw thread, connect with described middle casing (422) afterbody internal thread, described center piston (423) stretches into the passage bottom of described middle casing (422), the afterbody of above-mentioned middle casing (422) and described center piston is equipped with locking nut, or directly open circular hole in the close side of described hollow elongated tubular and substrate to be coated (20) surface, or open elongated hole.
6. metal coiled material according to claim 4 and the continuous powder spray production equipment of sheet material, it is characterized in that: the spray orifice of described sprayer nozzle (607) is a length shape spray seam, this spray seam cross section, both sides is parallel lines (611), or the splayed of less entrance and bigger exit or tubaeform, described splayed both sides are straight line (612), or curve (613), no matter be splayed or tubaeform, be all symmetrical arranged along sprayer center line (614) about it.
7. metal coiled material according to claim 5 and the continuous powder spray production equipment of sheet material, it is characterized in that: the spray orifice of described sprayer nozzle (607) is a length shape spray seam, this spray seam cross section, both sides is parallel lines (611), or the splayed of less entrance and bigger exit or tubaeform, described splayed both sides are straight line (612), or curve (613), no matter be splayed or tubaeform, be all symmetrical arranged along sprayer center line (614) about it.
8. metal coiled material according to claim 1 and 2 and the continuous powder spray production equipment of sheet material, it is characterized in that: the hole of described tube cell pipe joint (503) and the hole of air compressor first, second efferent duct (703) suitable, the hole of the hole of described compressed air pipe joint (504) and the efferent duct (703) of air compressor third is suitable, each described air compressor comprises: gas tank (701), with the tank connected input pipe of gas (714) and efferent duct (703), the top of described gas tank (701) is cylinder, bottom is inverted cone (702), described input pipe (714) is connected with described inverted cone (702) is vertical by bending pipeline (705), described efferent duct (703) is multichannel, the top of described gas tank (701) is arranged in symmetrically around tank body center line, the caliber on each road efferent duct (703) is identical, arrival end next-door neighbour is arranged in described gas tank (701), near the centerline of described gas tank (701), the port of export is through the tank skin of described gas tank (701).
9. metal coiled material according to claim 1 and 2 and the continuous powder spray production equipment of sheet material, it is characterized in that: described sprayer locomotive (33) is arranged on described frame-type mobile trolley used (309) or installs on the ground, described base (520) has wheel (505), the shape of described vehicle frame (521) is inverted " U " shape, two columns are set with along on vehicle frame, the sliding support (422) of lower motion, described cantilever beam (502) is arranged on the one or both sides of this sliding support (522), screw lift (404) is provided with between two columns of described base upper frame, the drive link (403) be arranged in sliding pair supporting seat (507) is provided with between this screw lift (504) and described cantilever beam (502), described sliding pair supporting seat (507) is arranged on the inner side of a column of described inverted " U " shape vehicle frame (521).
10. metal coiled material according to claim 5 and the continuous powder spray production equipment of sheet material, it is characterized in that: described sprayer locomotive (33) is arranged on described frame-type mobile trolley used (309) or installs on the ground, described base (520) has wheel (505), the shape of described vehicle frame (521) is inverted " U " shape, two columns are set with along on vehicle frame, the sliding support (522) of lower motion, described cantilever beam (502) is arranged on the one or both sides of this sliding support (522), screw lift (504) is provided with between two columns of described base upper frame, the drive link (503) be arranged in sliding pair supporting seat (507) is provided with between this screw lift (504) and described cantilever beam (502), described sliding pair supporting seat (507) is arranged on the inner side of a column of described inverted " U " shape vehicle frame (421).
11. metal coiled materials according to claim 6 and the continuous powder spray production equipment of sheet material, it is characterized in that: described sprayer locomotive (33) is arranged on described frame-type mobile trolley used (309) or installs on the ground, described base (520) has wheel (505), the shape of described vehicle frame (521) is inverted " U " shape, two columns are set with along on vehicle frame, the sliding support (522) of lower motion, described cantilever beam (502) is arranged on the one or both sides of this sliding support (522), screw lift (504) is provided with between two columns of described base upper frame, the drive link (503) be arranged in sliding pair supporting seat (507) is provided with between this screw lift (504) and described cantilever beam (502), described sliding pair supporting seat (507) is arranged on the inner side of a column of described inverted " U " shape vehicle frame (521).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520109524.4U CN204710665U (en) | 2015-02-13 | 2015-02-13 | Metal coiled material and the continuous powder spray production equipment of sheet material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520109524.4U CN204710665U (en) | 2015-02-13 | 2015-02-13 | Metal coiled material and the continuous powder spray production equipment of sheet material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104588284A (en) * | 2015-02-13 | 2015-05-06 | 北京京诚之星科技开发有限公司 | Continuous powder coating production equipment and method of metal coils and sheets |
| CN109499793A (en) * | 2018-12-26 | 2019-03-22 | 中冶京诚工程技术有限公司 | Belt electrostatic guide device and electrostatic powder spraying device |
-
2015
- 2015-02-13 CN CN201520109524.4U patent/CN204710665U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104588284A (en) * | 2015-02-13 | 2015-05-06 | 北京京诚之星科技开发有限公司 | Continuous powder coating production equipment and method of metal coils and sheets |
| CN104588284B (en) * | 2015-02-13 | 2019-02-19 | 中冶京诚工程技术有限公司 | Metal coiled material and the continuous powder spray production equipment of plate and its production method |
| CN109499793A (en) * | 2018-12-26 | 2019-03-22 | 中冶京诚工程技术有限公司 | Belt electrostatic guide device and electrostatic powder spraying device |
| CN109499793B (en) * | 2018-12-26 | 2024-02-06 | 中冶京诚工程技术有限公司 | Belt type electrostatic guiding device and powder electrostatic spraying device |
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