CN113578598B - Spraying device for processing injection molding pipe fittings - Google Patents
Spraying device for processing injection molding pipe fittings Download PDFInfo
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- CN113578598B CN113578598B CN202110883885.4A CN202110883885A CN113578598B CN 113578598 B CN113578598 B CN 113578598B CN 202110883885 A CN202110883885 A CN 202110883885A CN 113578598 B CN113578598 B CN 113578598B
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- spraying
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- injection molding
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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
- B05B13/0207—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the work being an elongated body, e.g. wire or pipe
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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
- B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
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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
- B05B13/06—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 specially designed for treating the inside of hollow bodies
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- Spray Control Apparatus (AREA)
Abstract
The invention discloses a spraying device for processing injection-molded pipes, which comprises a spraying box, a spraying strip, a material conveying pump, a material storage box and a box door rotatably mounted at the front end of the spraying box, wherein the front end, the top end and the bottom end of the spraying box are all in an open structure, the bottom end of the spraying box is fixedly connected with a base, the inner side of the base is fixedly connected with a cross bracket, the inner side of the opening at the top end of the spraying box is slidably connected with a lifting frame, an adjusting part is arranged between the spraying box and the lifting frame, a spraying part is arranged between the spraying box and the lifting frame, a rotary disc is rotatably connected below the lifting frame, a driving part is arranged between the lifting frame and the rotary disc, and a clamping part is arranged below the rotary disc. According to the invention, the internal and external synchronous swing spraying structure is adopted, so that the outer wall and the inner wall of the injection molding pipe can be synchronously subjected to swing spraying treatment, the workload of operators is reduced, the convenience of spraying operation of the injection molding pipe is improved, and the spraying processing efficiency of the injection molding pipe is improved.
Description
Technical Field
The invention relates to the technical field of injection molding part machining, in particular to a spraying device for machining an injection molding pipe.
Background
Injection molding is a method for producing and molding industrial products, the products are generally produced by rubber injection molding and plastic injection molding, and the injection molding can also be injection molding die pressing and die casting, and injection molding products are various injection molding products produced by an injection molding machine and are generally called injection molding parts, including various packages, parts and the like.
After the injection molding of the injection molding pipe fitting, the injection molding pipe fitting needs to be further sprayed, so that the corrosion resistance, the wear resistance and the mechanical property are improved, however, the existing spraying device for processing the injection molding pipe fitting still has the defects that: most adopt semi-automatic formula spraying structure, when carrying out spray finishing to the pipe fitting, need the direct participation of operating personnel, both increased operating personnel's work load, also reduced the efficiency of injection molding pipe fitting spray finishing, the back is accomplished in the outer wall spraying of injection molding pipe fitting simultaneously, just can carry out the spray finishing of injection molding pipe fitting inner wall, the synchronous spraying operation of difficult pipe fitting outer wall and the inner wall of moulding plastics to the efficiency of injection molding pipe fitting spray finishing has further been reduced.
Disclosure of Invention
The invention aims to: the spraying device for processing the injection molding pipe fitting is provided for solving the problem that the traditional spraying device for processing the injection molding pipe fitting is difficult to realize high-efficiency spraying processing of the injection molding pipe fitting.
In order to achieve the purpose, the invention adopts the following technical scheme:
a spraying device for processing injection-molded pipes comprises a spraying box, a spraying strip, a conveying pump, a material storage box and a box door, wherein the box door is rotatably installed at the front end of the spraying box;
the spraying portion includes that the symmetry is installed the strip that sprays on the inside left and right sides of spraying case, is vertical installs at the spray drum at crane middle part, install the storage case on spraying case rear end and install the conveying pump on the storage case top, install the conveying pipeline on the conveying pump, the pan feeding end of conveying pipeline runs through the storage case and extends to the inboard bottom of storage case, the discharge end of conveying pipeline respectively with spray drum and two spray the strip intercommunication, two there are a plurality of first shower nozzles in the inboard impartial range intercommunication that sprays the strip, the outside intercommunication of spray drum has the multiunit to be the second shower nozzle that the annular array distributes.
As a further description of the above technical solution:
the outer parts of the four supports of the cross bracket are respectively connected with a rotating sleeve in a rotating way, and the front end of the base is movably connected with a material collecting box which can be transversely pulled and moved below the cross bracket.
As a further description of the above technical solution:
the adjusting part comprises a stepping motor arranged on the rear side of the top end of the spraying box and a transmission screw rod connected to the bottom end of the stepping motor, the bottom end of the transmission screw rod penetrates through the lifting frame and extends to the lower portion of the lifting frame, and the rear end of the lifting frame is fixedly connected with a lifting screw base matched with the transmission screw rod.
As a further description of the above technical solution:
the drive division is including installing the swing motor on crane top left side and connecting the swing motor bottom and be located the transmission fluted disc of crane below, the periphery fixedly connected with of capstan and the tooth piece that the meshing of transmission fluted disc is connected.
As a further description of the above technical solution:
the clamping part includes that the rotation is installed at the spiral frame of spiral dish below, is four spouts and the slider of slidable mounting on four spouts are seted up to the annular array, four the equal fixedly connected with in bottom of slider runs through the double-layered post of revolving the frame, the inside of revolving the frame is located four the chute has all been seted up in the outside of pressing from both sides the post.
As a further description of the above technical solution:
two electric cylinder are installed to the bottom symmetry of capstan, two electric cylinder's flexible end all rotates with the bottom of revolving the frame and is connected, and under the operating condition, electric cylinder inwards contracts or outwards extends, and the revolving frame is anticlockwise or clockwise rotation thereupon below the capstan, four press from both sides the post alright synchronous inwards gather together or outwards spread.
As a further description of the above technical solution:
the electric control cabinet is installed on the right end of the spraying box, and the output end of the electric control cabinet is electrically connected with the input ends of the stepping motor, the material conveying pump, the swing motor and the electric oil cylinder respectively.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, an internal and external synchronous swing spraying structure is adopted, the spraying strip, the spraying cylinder, the storage box and the conveying pump are arranged between the spraying box and the lifting frame, the lifting frame is provided with the swing motor, the rotary disc and the rotary frame, when the swing motor works, the transmission gear disc is driven to intermittently rotate clockwise and anticlockwise for a certain angle, at the moment, the injection molding pipe between the cross bracket and the rotary frame can swing back and forth, when the conveying pump works, the coating in the storage box can be respectively conveyed to the spraying strip and the spraying cylinder through the conveying pipe, the coating can be uniformly sprayed to the outer wall and the inner wall of the injection molding pipe through the plurality of first spray nozzles and the plurality of second spray nozzles, the structure can synchronously swing and spray the outer wall and the inner wall of the injection molding pipe, the workload of operators is reduced, the convenience of the spraying operation of the injection molding pipe is improved, and the spraying processing efficiency of the injection molding pipe is improved.
2. According to the invention, an internal support type clamping structure is adopted, the sliding groove, the sliding block, the clamping columns, the chute and the electric oil cylinder are arranged between the rotary disc and the rotary frame, when the electric oil cylinder works, the electric oil cylinder can contract inwards or extend outwards, at the moment, the rotary frame can rotate anticlockwise or clockwise along with the rotary disc below the rotary disc, under the sliding action between the clamping columns and the chute and the sliding action between the sliding block and the sliding groove, the four clamping columns can be synchronously gathered inwards or diffused outwards, when the outer walls of the four clamping columns are in contact with the inner wall of the injection molding pipe, the injection molding pipe can be limited and clamped between the cross-shaped bracket and the rotary frame, the structure can realize the adjustment clamping treatment of the injection molding pipe, the clamping stability of the injection molding pipe is improved, and meanwhile, the applicability of the spraying device is also improved.
Drawings
FIG. 1 is an orthographic three-axis view of a spray coating device for processing injection molded pipe parts according to the present invention;
FIG. 2 is a schematic side cross-sectional view of a spray booth of the present invention;
FIG. 3 is a schematic bottom perspective view of the spray booth of the present invention;
fig. 4 is a schematic perspective view of a base of the present invention.
Illustration of the drawings:
1. spraying box; 101. a box door; 2. a base; 201. a cross bracket; 202. rotating the sleeve; 203. a material collecting box; 3. a lifting frame; 301. a lifting screw seat; 4. a stepping motor; 401. a drive screw; 5. spraying strips; 501. a first nozzle; 6. a spray cylinder; 601. a second spray head; 7. a delivery pump; 701. a delivery pipe; 8. a material storage box; 9. a swing motor; 901. a transmission fluted disc; 10. an electric cabinet; 11. rotating the disc; 1101. a tooth block; 1102. a chute; 12. rotating the frame; 1201. a chute; 13. a slider; 1301. clamping the column; 14. an electric oil cylinder.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a spraying device for processing injection-molded pipes comprises a spraying box 1, a spraying strip 5, a material conveying pump 7, a material storage box 8 and a box door 101 rotatably mounted at the front end of the spraying box 1, wherein the front end, the top end and the bottom end of the spraying box 1 are all in an open structure, the bottom end of the spraying box 1 is fixedly connected with a base 2, the inner side of the base 2 is fixedly connected with a cross bracket 201, the inner side of the opening at the top end of the spraying box 1 is slidably connected with a lifting frame 3, an adjusting part is arranged between the spraying box 1 and the lifting frame 3, a spraying part is arranged between the spraying box 1 and the lifting frame 3, a rotary disc 11 is rotatably connected below the lifting frame 3, a driving part is arranged between the lifting frame 3 and the rotary disc 11, and a clamping part is arranged below the rotary disc 11;
the spraying portion includes that the symmetry is installed and is sprayed strip 5 on the inside left and right sides of spraying case 1, be vertical spray tube 6 of installing at crane 3 middle part, install storage case 8 on spraying case 1 rear end and install the conveying pump 7 on storage case 8 top, install conveying pipeline 701 on the conveying pump 7, the pan feeding end of conveying pipeline 701 runs through storage case 8 and extends to the inboard bottom of storage case 8, the discharge end of conveying pipeline 701 sprays strip 5 intercommunication with spray tube 6 and two respectively, two inboard impartial apart from the intercommunication that sprays strip 5 have a plurality of first shower nozzles 501, the outside intercommunication of spray tube 6 has the multiunit to be the second shower nozzle 601 that the annular array distributes.
Specifically, as shown in fig. 1 and 4, the outer portions of the four supports of the cross bracket 201 are respectively and rotatably connected with a rotating sleeve 202, the front end of the base 2 is located below the cross bracket 201 and is movably connected with a material collecting box 203 capable of being transversely pulled and moved, and the rotating sleeve 202 is arranged to convert the contact friction force between the lower end of the injection molding pipe and the cross bracket 201 into rolling friction force, so that the abrasion of the injection molding pipe in the swinging process is reduced.
Specifically, as shown in fig. 1-3, the adjusting part includes a stepping motor 4 installed on the rear side of the top end of the spraying box 1 and a transmission screw 401 connected to the bottom end of the stepping motor 4, the bottom end of the transmission screw 401 penetrates through the lifting frame 3 and extends to the lower part of the lifting frame 3, the rear end of the lifting frame 3 is fixedly connected with a lifting screw base 301 matched with the transmission screw 401, when the stepping motor 4 works, the transmission screw 401 can be driven to rotate forward or backward, and under the transmission action between the transmission screw 401 and the lifting screw base 301, the lifting frame 3 can integrally move up or down in the spraying box 1.
Specifically, as shown in fig. 1 to 3, the driving part includes a swing motor 9 installed on the left side of the top end of the lifting frame 3 and a transmission fluted disc 901 connected to the bottom end of the swing motor 9 and located below the lifting frame 3, a tooth block 1101 meshed with the transmission fluted disc 901 is fixedly connected to the periphery of the rotating disc 11, when the swing motor 9 works, the transmission fluted disc 901 is driven to swing back and forth, and under the meshing transmission action between the transmission fluted disc 901 and the tooth block 1101, the rotating disc 11 and the rotating frame 12 can swing back and forth as a whole.
Specifically, as shown in fig. 1 to 3, the clamping portion includes a rotating frame 12 rotatably mounted below the rotating disc 11, four sliding grooves 1102 arranged on the rotating disc 11 in an annular array and sliding blocks 13 slidably mounted inside the four sliding grooves 1102, clamping posts 1301 penetrating through the rotating frame 12 are fixedly connected to the bottom ends of the four sliding blocks 13, inclined grooves 1201 are formed inside the rotating frame 12 and located outside the four clamping posts 1301, two electric cylinders 14 are symmetrically mounted at the bottom end of the rotating disc 11, the telescopic ends of the two electric cylinders 14 are rotatably connected to the bottom end of the rotating frame 12, in an operating state, the electric cylinders 14 contract inwards or extend outwards, the rotating frame 12 rotates anticlockwise or clockwise below the rotating disc 11, and the four clamping posts 1301 can be gathered together or spread outwards synchronously.
Specifically, as shown in fig. 1-3, an electric cabinet 10 is installed on the right end of the spraying box 1, the output end of the electric cabinet 10 is electrically connected with the input ends of the stepping motor 4, the material delivery pump 7, the swing motor 9 and the electric cylinder 14, and the electric cabinet 10 is arranged to facilitate the power-on control processing of the stepping motor 4, the material delivery pump 7, the swing motor 9 and the electric cylinder 14 by an operator.
The working principle is as follows: when in use, the spraying device is connected with a power supply, the box door 101 can be opened, the injection molding pipe fitting to be sprayed and processed is placed on the cross bracket 201 on the base 2, at the moment, an operator can operate the electric cabinet 10 to control the stepping motor 4 to work, when the stepping motor 4 works, the transmission screw 401 is driven to rotate, under the transmission action between the transmission screw 401 and the lifting screw base 301, the lifting frame 3 can move up and down on the inner side of the top end of the spraying box 1 as a whole, when the rotary frame 12 below the lifting frame 3 contacts the top end of the injection molding pipe fitting, the electric cabinet 10 can be operated to control the stepping motor 4 to stop working and control the electric oil cylinder 14 to extend outwards, at the moment, the rotary frame 12 rotates clockwise at a certain angle below the rotary disc 11, under the sliding action between the clamping columns 1301 and the inclined grooves 1201 and the sliding action between the sliding blocks 13 and the sliding grooves 1102, the four clamping columns 1301 can synchronously spread outwards, when the outer walls of the four clamping columns 1301 are contacted with the inner wall of the injection molding pipe fitting, the injection molding pipe fitting is limited and clamped between the cross bracket 201 and the rotating frame 12, at this time, the electric cabinet 10 can be operated to control the electric oil cylinder 14 to stop working, the material conveying pump 7 and the swing motor 9 to work, when the swing motor 9 works, the transmission fluted disc 901 is driven to rotate in a reciprocating manner, under the meshing transmission action between the transmission gear plate 901 and the gear block 1101, the rotating plate 11 and the rotating frame 12 integrally drive the injection molding pipe fitting to swing back and forth along with the injection molding pipe fitting, when the conveying pump 7 works, the coating in the storage box 8 is respectively conveyed to the spraying bar 5 and the spraying barrel 6 through the conveying pipe 701, and the coating is uniformly sprayed to the outer wall and the inner wall of the injection molding pipe fitting through the first spray head 501 on the spraying bar 5 and the second spray head 601 on the spraying barrel 6, so that the outer wall and the inner wall of the injection molding pipe fitting are synchronously sprayed.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (4)
1. A spraying device for processing injection-molded pipes comprises a spraying box (1), a spraying strip (5), a material conveying pump (7), a material storage box (8) and a box door (101) rotatably installed at the front end of the spraying box (1), and is characterized in that the front end, the top end and the bottom end of the spraying box (1) are all of an open structure, the bottom end of the spraying box (1) is fixedly connected with a base (2), the inner side of the base (2) is fixedly connected with a cross-shaped bracket (201), the inner side of the opening at the top end of the spraying box (1) is slidably connected with a lifting frame (3), an adjusting part is arranged between the spraying box (1) and the lifting frame (3), a spraying part is arranged between the spraying box (1) and the lifting frame (3), a rotary disc (11) is rotatably connected below the lifting frame (3), a driving part is arranged between the lifting frame (3) and the rotary disc (11), and a clamping part is arranged below the rotary disc (11);
the spraying part comprises spraying strips (5) which are symmetrically arranged on the left side and the right side inside the spraying box (1), a spraying cylinder (6) which is vertically arranged at the middle part of the lifting frame (3), a storage box (8) which is arranged at the rear end of the spraying box (1) and a delivery pump (7) which is arranged at the top end of the storage box (8), wherein a delivery pipe (701) is arranged on the delivery pump (7), the feeding end of the delivery pipe (701) penetrates through the storage box (8) and extends to the bottom of the inner side of the storage box (8), the discharging end of the delivery pipe (701) is respectively communicated with the spraying cylinder (6) and two spraying strips (5), the inner sides of the two spraying strips (5) are communicated with a plurality of first spray heads (501) at equal intervals, and the outer part of the spraying cylinder (6) is communicated with a plurality of second spray heads (601) which are distributed in an annular array;
the outer parts of four supports of the cross bracket (201) are respectively and rotatably connected with a rotating sleeve (202), and the front end of the base (2) is positioned below the cross bracket (201) and is movably connected with a material collecting box (203) capable of transversely drawing;
the adjusting part comprises a stepping motor (4) arranged on the rear side of the top end of the spraying box (1) and a transmission screw rod (401) connected to the bottom end of the stepping motor (4), the bottom end of the transmission screw rod (401) penetrates through the lifting frame (3) and extends to the lower part of the lifting frame (3), and the rear end of the lifting frame (3) is fixedly connected with a lifting screw seat (301) matched with the transmission screw rod (401);
the driving part comprises a swing motor (9) arranged on the left side of the top end of the lifting frame (3) and a transmission fluted disc (901) connected to the bottom end of the swing motor (9) and located below the lifting frame (3), and a tooth block (1101) meshed with the transmission fluted disc (901) is fixedly connected to the periphery of the rotary disc (11).
2. The spraying device for processing the injection-molded pipe fittings as claimed in claim 1, wherein the clamping portion comprises a rotating frame (12) rotatably mounted below the rotating disc (11), four sliding grooves (1102) which are arranged on the rotating disc (11) in an annular array manner, and sliding blocks (13) which are slidably mounted on the inner sides of the four sliding grooves (1102), clamping columns (1301) which penetrate through the rotating frame (12) are fixedly connected to the bottom ends of the four sliding blocks (13), and inclined grooves (1201) are formed in the outer sides, located on the four clamping columns (1301), of the rotating frame (12).
3. The spraying device for machining the injection molding pipe fitting is characterized in that two electric oil cylinders (14) are symmetrically installed at the bottom end of the rotary disc (11), the telescopic ends of the two electric oil cylinders (14) are rotatably connected with the bottom end of the rotary frame (12), the electric oil cylinders (14) are retracted inwards or extend outwards in the working state, the rotary frame (12) rotates anticlockwise or clockwise below the rotary disc (11), and the four clamping columns (1301) can be synchronously gathered inwards or diffused outwards.
4. The spraying device for processing the injection-molded pipe fittings as claimed in any one of claims 1 to 3, wherein an electric cabinet (10) is mounted on the right end of the spraying box (1), and the output end of the electric cabinet (10) is electrically connected with the input ends of the stepping motor (4), the material conveying pump (7), the swing motor (9) and the electric oil cylinder (14) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110883885.4A CN113578598B (en) | 2021-08-03 | 2021-08-03 | Spraying device for processing injection molding pipe fittings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110883885.4A CN113578598B (en) | 2021-08-03 | 2021-08-03 | Spraying device for processing injection molding pipe fittings |
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| Publication Number | Publication Date |
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| CN113578598A CN113578598A (en) | 2021-11-02 |
| CN113578598B true CN113578598B (en) | 2023-01-20 |
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| CN202110883885.4A Active CN113578598B (en) | 2021-08-03 | 2021-08-03 | Spraying device for processing injection molding pipe fittings |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115555171B (en) * | 2022-10-31 | 2023-10-24 | 浙江天女集团制漆有限公司 | Heat-conducting insulating epoxy electronic paint and spraying device thereof |
| CN116140099B (en) * | 2022-12-30 | 2023-10-24 | 江苏弘扬石英制品有限公司 | Quartz diffusion tube spraying device for solar photovoltaic and implementation method thereof |
| CN117225633B (en) * | 2023-11-14 | 2024-01-26 | 常州锡润机械制造有限公司 | Coating spraying device and method for aluminum hose processing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101672542B1 (en) * | 2016-02-17 | 2016-11-04 | 태영이노텍 주식회사 | Machine for coating inside of pipe |
| KR101964128B1 (en) * | 2017-11-10 | 2019-08-01 | 한국원자력연구원 | One-end open mold inner surface coating method and apparatus |
| CN108187950A (en) * | 2018-02-01 | 2018-06-22 | 浙江夏远信息技术有限公司 | A kind of environmentally friendly spray-painting plant with inside and outside wall nozzle |
| CN109395932A (en) * | 2018-12-14 | 2019-03-01 | 宁波众创智能科技有限公司 | A kind of tube-like piece inside and outside wall synchronizes uniformly automation spray-painting plant |
| CN209452130U (en) * | 2018-12-27 | 2019-10-01 | 佛山柯维光电股份有限公司 | A kind of pipe coating machine |
| CN210939166U (en) * | 2019-11-05 | 2020-07-07 | 南通创佳机电有限公司 | Novel capacitor aluminum shell clamping and rotating mechanism |
| CN211463663U (en) * | 2019-12-21 | 2020-09-11 | 凌红春 | Steel pipe surface paint spraying apparatus for machining |
| CN112604850A (en) * | 2020-12-10 | 2021-04-06 | 熊宇 | Uniform antirust oil spraying device for inner ring and outer ring of hollow cylindrical part |
| CN112958307B (en) * | 2021-01-31 | 2022-10-25 | 重庆北鑫机电有限公司 | Electrostatic spraying equipment for inner wall of tubular electromechanical part |
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