CN110560302A - Uniform spraying device for track of planar reciprocating engine and method for improving spraying uniformity - Google Patents
Uniform spraying device for track of planar reciprocating engine and method for improving spraying uniformity Download PDFInfo
- Publication number
- CN110560302A CN110560302A CN201910942110.2A CN201910942110A CN110560302A CN 110560302 A CN110560302 A CN 110560302A CN 201910942110 A CN201910942110 A CN 201910942110A CN 110560302 A CN110560302 A CN 110560302A
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- Prior art keywords
- spraying
- spray gun
- reciprocating machine
- conveying device
- spray
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005507 spraying Methods 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000007921 spray Substances 0.000 claims abstract description 71
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 16
- 230000001133 acceleration Effects 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 5
- 238000005192 partition Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000003973 paint Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007590 electrostatic spraying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0405—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with reciprocating or oscillating spray heads
- B05B13/041—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with reciprocating or oscillating spray heads with spray heads reciprocating along a straight line
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
- B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
- B05B14/48—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths specially adapted for particulate material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
- B05B15/68—Arrangements for adjusting the position of spray heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/90—Spray booths comprising conveying means for moving objects or other work to be sprayed in and out of the booth, e.g. through the booth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Spray Control Apparatus (AREA)
Abstract
the invention discloses a device for uniformly spraying a track of a plane reciprocating machine and a method for improving the spraying uniformity, belongs to the field of spraying equipment and methods, and solves the problems that a device for uniformly spraying a track of a plane reciprocating machine and a method for improving the spraying uniformity are lacked in the prior art, the spraying process is adjusted in real time, the reciprocating spraying precision is high, and spraying materials are saved. The device mainly comprises a conveying device, a driving part, a controller and a plane reciprocating machine, wherein a spray gun mounting rod is arranged on the plane reciprocating machine, and a spray gun is mounted on the spray gun mounting rod; the driving part comprises a motor, a speed reducer and driving chains, the motor and the speed reducer are arranged on the bracket, the bracket is also provided with an encoder, and the encoder is arranged between the driving chains; a driven chain is arranged on the conveying device, a shifting tooth is arranged on the driving chain, and the shifting tooth is meshed with the driven chain; the method satisfies the formula: (a × B)/C ═ N ± 0.05. The invention is mainly used for spraying workpieces, reduces waste and avoids the problems of exposed bottom of partition sections, covered gaps and excessive superposition.
Description
Technical Field
The invention relates to spraying equipment and a spraying method, in particular to a track uniform spraying device of a plane reciprocating machine and a method for improving spraying uniformity.
Background
the plane reciprocating machine is special coating equipment adopting a spraying technology, and can perform stable and continuous reciprocating motion on the surface to be sprayed to realize automatic and uniform spraying. In the process of conveying the coating, the pressurized coating is conveyed into a spray gun of the plane reciprocating engine through a high-pressure hose, and the coating is instantly atomized by the spray gun and then released to the surface of an object to be coated. The reciprocating spraying of the existing plane reciprocating machine is generally a reciprocating process of firstly accelerating, then uniformly decelerating and then decelerating between two ends, but the spraying is difficult to be uniform, the phenomenon of partition section bottom exposure is easy to occur, and obvious covering gaps and excessive coincidence exist during the spraying.
Electrostatic spraying is carried out, like charges repel after high-voltage static electricity, and the like charges diffuse outwards; attract the opposite charges of the workpiece; the repellent diffusion is beneficial to the powder fog concentration of a plurality of spray guns tending to be uniform; the molding powder on the surface of the workpiece tends to be uniform like the surrounding effect of the attraction of the molding powder to the workpiece; in addition, when the molding powder on the surface of the workpiece reaches a certain thickness, the repulsion and the attraction reduce the adsorption of the molding powder on the workpiece after the molding powder is too thick, and the place with thin molding powder on the surface of the workpiece has stronger molding powder adsorption capacity.
at present, a device for uniformly spraying a plane reciprocating machine track and a method for improving the spraying uniformity are lacked, wherein the spraying process is adjusted in real time, workers do not need to adjust a spraying gun in the process of advancing according to vision, and an accurate spraying method is adopted, so that the reciprocating spraying precision is improved, and spraying materials are saved.
Disclosure of Invention
The invention aims to provide a device for uniformly spraying a track of a plane reciprocating engine and a method for improving the spraying uniformity, and aims to solve the problems that in the prior art, a spraying process is not adjusted in real time, workers do not need to adjust a travelling spray gun according to vision, an accurate spraying method is adopted, the reciprocating spraying precision is improved, and spraying materials are saved.
The invention is realized by the following technical scheme:
A plane reciprocating engine track uniform spraying device comprises a conveying device, a driving part and a plane reciprocating engine, wherein a spray gun mounting rod is arranged on the plane reciprocating engine, and a spray gun is mounted on the spray gun mounting rod; the driving part comprises a motor, a speed reducer and driving chains, the motor and the speed reducer are arranged on the support, the support is also provided with an encoder, and the encoder is arranged between the driving chains; the conveying device is provided with a driven chain, the driving chain is provided with a shifting tooth, and the shifting tooth is meshed with the driven chain.
Furthermore, a spraying room is arranged at the position of the plane reciprocating machine, and a powder recovery device is arranged on one side of the spraying room.
Furthermore, a drying chamber is arranged on the left side of the conveying device, and the part of the conveying device, which is positioned inside the drying chamber, is higher than the part, which is positioned outside the drying chamber; and the conveying device is provided with a spraying hanging rod.
Further, the interval between the spray guns is equal to the effective spraying width of a single spray gun.
A method for improving spraying uniformity of a plane reciprocating engine track uniform spraying device meets the following formula: (A + B)/C ═ N. + -. 0.05, where
A: the number of spray guns;
B: effective spray width of a single spray gun;
C: the distance that the workpiece travels within the spray gun reciprocation time;
N: n is an integer.
further, the effective spray width B of a single spray gun is equal to the spray gun spacing between adjacent spray guns.
furthermore, the reciprocating spraying process of the spray gun is divided into an acceleration stage, a constant speed stage and a deceleration stage, and the displacement length of the constant speed stage of the spray gun is greater than the actual length of the workpiece.
Compared with the prior art, the invention has the beneficial effects that:
1. the spraying distance in the uniform speed stage is effectively controlled to improve the spraying range, and an accurate spraying method is adopted, so that the result of a formula (the number of spray guns A is the effective spraying width B of a single spray gun)/the distance C of the workpiece in the reciprocating time of the spray guns is close to an integer, the reciprocating spraying precision is improved, the uniform spraying process can be ensured, and the spraying material is saved.
2. The moving speed of the conveying device can be measured in real time through the encoder in the spraying process, the moving speed of the workpiece is adjusted, and the purpose of real-time adjustment is achieved by matching with the reciprocating spraying action of the plane reciprocating machine.
3. In the past, a worker adjusts spraying equipment by experience, powder waste is serious, the problems of partition bottom exposure, gap covering and excessive overlapping are solved, and cost is greatly saved.
4. The equipment is simple, the complicated spray gun multi-angle control is not used, and the cost is low.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a side view of the present invention;
Fig. 4 is a schematic structural view of a plane reciprocating machine of the present invention;
FIG. 5 is an enlarged view of A of the present invention;
fig. 6 is a schematic view of the spray trajectory of the spray gun of the present invention.
in the figure: 1. a motor; 4. spraying a hanging rod; 5. a conveying device; 6. a workpiece; 7. a planar reciprocating machine; 8. spraying a room; 9. a drying chamber; 10. a powder material recoverer; 11. a speed reducer; 12. a passive chain; 13. a drive chain; 14. an encoder; 15. the lance mounting stem.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
embodiment 1, a planar reciprocating machine trajectory uniform spraying device, comprising a conveying device 5, a driving part and a planar reciprocating machine 7, wherein the planar reciprocating machine 7 is provided with a spray gun mounting rod 15, and the spray gun mounting rod 15 is provided with a spray gun; the driving part comprises a motor 1, a speed reducer 11 and driving chains 13, the motor 1 and the speed reducer 11 are arranged on a support, an encoder 14 is further arranged on the support, and the encoder 14 is arranged between the driving chains 13; the conveying device 5 is provided with a driven chain 12, the driving chain 13 is provided with a shifting tooth, and the shifting tooth is meshed with the driven chain 12.
Embodiment 2, a planar reciprocating machine trajectory uniform spraying device, wherein a spraying room 8 is arranged at a position of a planar reciprocating machine 7, and a powder recoverer 10 is arranged at one side of the spraying room 8; a drying chamber 9 is arranged on the left side of the conveying device 5, and the part of the conveying device 5 positioned inside the drying chamber 9 is higher than the part positioned outside the drying chamber 9; the conveying device 5 is provided with a spraying hanging rod 4; the spacing between the spray guns was equal to the effective spray width of a single spray gun, otherwise the same as in example 1.
embodiment 3, a method for improving the spraying uniformity of a planar reciprocating engine track uniform spraying device, which satisfies the formula: (A + B)/C ═ N. + -. 0.05, where
A: the number of spray guns;
B: effective spray width of a single spray gun;
c: the distance that the workpiece travels within the spray gun reciprocation time;
N: n is an integer.
Embodiment 4, a method for improving the spraying uniformity of a planar reciprocating machine trajectory-uniform spraying device, where the effective spraying width B of a single spray gun is equal to the spray gun interval between adjacent spray guns; the spray gun reciprocating spraying process is divided into an acceleration stage, a uniform speed stage and a deceleration stage, the displacement length of the spray gun uniform speed stage is larger than the actual length of the workpiece, and the rest is the same as that of the embodiment 3.
the specific process steps comprise hanging a sprayed part, spraying and adjusting I, spraying and adjusting II, recovering powder, drying and taking the sprayed part;
Hanging a spraying part: hanging a workpiece 6 on the spraying hanging rod 4;
spraying and adjusting I: inputting the spraying height of the workpiece 6 and adjusting the spraying range of the spray gun;
Spraying: the spray gun is driven by the spray gun mounting rod 15 to carry out high-precision spraying;
and (4) spraying and adjusting II: the encoder 14 measures the advancing speed of the workpiece 6 on the conveying device 5 in real time, the advancing speed of the workpiece 6 is adjusted in real time in the spraying process, and the spraying distance in the constant speed stage is adjusted;
Powder recovery: recycling powder which is not adsorbed and used by the workpiece 6 in the spraying process;
Drying: the workpiece 6 enters the drying chamber 9 from the bottom of the drying chamber 9 along with the conveying device 5, the height of the workpiece gradually rises to a horizontal position in the advancing process, the workpiece 6 is dried at high temperature, and then the workpiece 6 gradually lowers along with the height of the conveying device 5 and leaves the drying chamber 9 from the bottom of the drying chamber 9;
Taking a spraying part: the workpiece 6 is manually removed.
The moving speed of the workpiece 6 can be changed at any time in the spraying process by measuring the advancing speed of the passive chain 12 on the conveying device 5 through the encoder 14, and the workpiece 6 can be accurately sprayed under the reciprocating spraying of the plane reciprocating machine 7. The powder sprayed by the spray guns can tend to be uniform due to the repulsion action of the charges of different polarities, and then the powder is adsorbed on the workpiece 6, a plurality of spray guns are arranged in the plane reciprocating machine 7, and the scrubbing brush effect widened at double can be realized by reasonably arranging the intervals among the spray guns.
for example: the number A of the spray guns and the effective spraying width B of a single spray gun can form a spraying track with the width of 20cm, the paint mark sprayed in the first step is 20cm, the paint mark sprayed in the second step starts to be sprayed at 1/3 of the paint mark sprayed in the first step, the workpiece 6 moves rightwards for about 6.667cm, and by analogy, the marks are adjacent and uniform, and the distance C of the workpiece in the reciprocating time of (the number A of the spray guns is equal to the effective spraying width B of the single spray gun)/the spray gun is approximately equal to 3. This gives that the number of sprayings of the workpiece 6 is 2 (number of spraygun a per effective spraygun width B of spraygun)/distance C travelled by the workpiece during the reciprocation time of the spraygun.
A plurality of spray guns can be arranged on the same plane reciprocating engine 7, the interval of the spray guns must be equal to the effective spraying width B of a single spray gun, the effective spraying distance of the spray guns for spraying the workpiece 6 is the spraying in the uniform speed stage, the time of the acceleration stage and the deceleration stage is generally set to be 0.4s, and the spray guns are easy to shake when the time is too small. And a high-precision spraying mode is adopted, and the moving range of the uniform speed adjusting stage is larger than the actual spraying length of the workpiece 6.
Claims (7)
1. The utility model provides a plane reciprocating engine orbit even spraying device, includes conveyer (5), drive division, controller and plane reciprocating engine (7), its characterized in that: a spray gun mounting rod (15) is arranged on the plane reciprocating engine (7), and a spray gun is mounted on the spray gun mounting rod (15); the driving part comprises a motor (1), a speed reducer (11) and a driving chain (13), the motor (1) and the speed reducer (11) are arranged on a support, an encoder (14) is further arranged on the support, and the encoder (14) is arranged between the driving chains (13) and connected with the controller; the conveying device (5) is provided with a driven chain (12), the driving chain (13) is provided with shifting teeth, and the shifting teeth are meshed with the driven chain (12).
2. the planar reciprocating machine trajectory even spraying device according to claim 1, characterized in that: a spraying room (8) is arranged at the position of the plane reciprocating machine (7), and a powder recoverer (10) is arranged at one side of the spraying room (8).
3. The planar reciprocating machine trajectory even spraying device according to claim 1, characterized in that: a drying chamber (9) is arranged on the left side of the conveying device (5), and the part of the conveying device (5) positioned in the drying chamber (9) is higher than the part of the conveying device positioned outside the drying chamber (9); and the conveying device (5) is provided with a spraying hanging rod (4).
4. the planar reciprocating machine trajectory even spraying device according to claim 1, characterized in that: the interval between the spray guns is equal to the effective spraying width of a single spray gun.
5. A method for improving the uniformity of spraying by using the device for uniformly spraying the trajectory of the planar reciprocating machine according to any one of claims 1 to 4, wherein: satisfies the formula: (A + B)/C ═ N. + -. 0.05, where
a: the number of spray guns;
b: effective spray width of a single spray gun;
C: the distance that the workpiece travels within the spray gun reciprocation time;
N: n is an integer.
6. the method for improving the spraying uniformity of the planar reciprocating machine track uniform spraying device according to claim 5, wherein the method comprises the following steps: the effective spray width B of a single gun is equal to the gun spacing between adjacent guns.
7. The method for improving the spraying uniformity of the planar reciprocating machine track uniform spraying device according to claim 5, wherein the method comprises the following steps: the reciprocating spraying process of the spray gun is divided into an acceleration stage, a constant speed stage and a deceleration stage, and the displacement length of the constant speed stage of the spray gun is greater than the actual length of a workpiece.
Priority Applications (1)
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CN201910942110.2A CN110560302B (en) | 2019-09-30 | 2019-09-30 | Plane reciprocating machine track uniform spraying device and method for improving spraying uniformity |
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CN201910942110.2A CN110560302B (en) | 2019-09-30 | 2019-09-30 | Plane reciprocating machine track uniform spraying device and method for improving spraying uniformity |
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CN110560302A true CN110560302A (en) | 2019-12-13 |
CN110560302B CN110560302B (en) | 2024-08-06 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112893040A (en) * | 2021-01-05 | 2021-06-04 | 佛山市广成铝业有限公司 | Spraying method based on uniformity |
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---|---|---|---|---|
EP2090374A1 (en) * | 2008-02-14 | 2009-08-19 | GE.MA.TA. S.p.A. | Machine for painting or colouring products with large surfaces |
CN103657972A (en) * | 2013-12-06 | 2014-03-26 | 中山市君禾机电设备有限公司 | Spraying system used for box combined type spraying |
CN203556491U (en) * | 2013-10-30 | 2014-04-23 | 浙江柯菲过滤器有限公司 | Automatic spraying and conveying mechanism of filter housing |
CN203620837U (en) * | 2013-12-06 | 2014-06-04 | 中山市君禾机电设备有限公司 | Spraying system for irregular workpieces |
CN106563622A (en) * | 2016-10-20 | 2017-04-19 | 佛山市安邦得机械设备有限公司 | Multi-track powder spraying method and device |
CN107755126A (en) * | 2017-11-23 | 2018-03-06 | 中山市君禾机电设备有限公司 | A kind of paint finishing of spray room workpiece height automatic identification |
CN209271760U (en) * | 2018-11-06 | 2019-08-20 | 韩山师范学院 | A kind of local intelligence tracking spraying line |
CN210729960U (en) * | 2019-09-30 | 2020-06-12 | 日照山海天旅游度假区金晨涂装设备有限公司 | Uniform spraying device for tracks of planar reciprocating engine |
-
2019
- 2019-09-30 CN CN201910942110.2A patent/CN110560302B/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2090374A1 (en) * | 2008-02-14 | 2009-08-19 | GE.MA.TA. S.p.A. | Machine for painting or colouring products with large surfaces |
CN203556491U (en) * | 2013-10-30 | 2014-04-23 | 浙江柯菲过滤器有限公司 | Automatic spraying and conveying mechanism of filter housing |
CN103657972A (en) * | 2013-12-06 | 2014-03-26 | 中山市君禾机电设备有限公司 | Spraying system used for box combined type spraying |
CN203620837U (en) * | 2013-12-06 | 2014-06-04 | 中山市君禾机电设备有限公司 | Spraying system for irregular workpieces |
CN106563622A (en) * | 2016-10-20 | 2017-04-19 | 佛山市安邦得机械设备有限公司 | Multi-track powder spraying method and device |
CN107755126A (en) * | 2017-11-23 | 2018-03-06 | 中山市君禾机电设备有限公司 | A kind of paint finishing of spray room workpiece height automatic identification |
CN209271760U (en) * | 2018-11-06 | 2019-08-20 | 韩山师范学院 | A kind of local intelligence tracking spraying line |
CN210729960U (en) * | 2019-09-30 | 2020-06-12 | 日照山海天旅游度假区金晨涂装设备有限公司 | Uniform spraying device for tracks of planar reciprocating engine |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112893040A (en) * | 2021-01-05 | 2021-06-04 | 佛山市广成铝业有限公司 | Spraying method based on uniformity |
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CN110560302B (en) | 2024-08-06 |
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Address after: 276800 Room 301, C10 / F, 177 Gaoxin 6th Road, Gaoxin District, Rizhao City, Shandong Province Applicant after: Rizhao Jinchen coating equipment Co.,Ltd. Address before: 276800 houguanzhuang village, wolongshan street, Shanhaitian tourist resort, Rizhao City, Shandong Province Applicant before: Jinchen coating equipment Co.,Ltd. of Rizhao Shanhaitian tourist resort |
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