CN114871183A - PCB moves back membrane self-cleaning equipment - Google Patents
PCB moves back membrane self-cleaning equipment Download PDFInfo
- Publication number
- CN114871183A CN114871183A CN202210662052.XA CN202210662052A CN114871183A CN 114871183 A CN114871183 A CN 114871183A CN 202210662052 A CN202210662052 A CN 202210662052A CN 114871183 A CN114871183 A CN 114871183A
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- Prior art keywords
- fixedly connected
- wall
- water tank
- pipe
- working box
- Prior art date
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Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 31
- 239000012528 membrane Substances 0.000 title claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 80
- 230000007246 mechanism Effects 0.000 claims description 33
- 238000007789 sealing Methods 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 7
- 238000005406 washing Methods 0.000 description 5
- 244000309464 bull Species 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000003071 polychlorinated biphenyls Chemical class 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/022—Cleaning travelling work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/14—Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning liquids
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
Landscapes
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention relates to the technical field of PCB cleaning, and discloses an automatic PCB film-stripping cleaning device which comprises a working box and a water tank, wherein supporting rods are fixedly connected to four corners of the upper surface of the water tank, the working box is fixedly connected to the upper ends of the four supporting rods, a rotating rod is arranged inside the working box, the rod wall at the rear end of the rotating rod is rotatably connected with the inner wall at the rear side of the working box, the outer wall at the rear side of the working box is fixedly connected with a motor, the rear end of the rotating rod penetrates through the working box and is fixedly connected with the output end of the motor, two first annular plates are fixedly sleeved on the rod wall of the rotating rod, and the side wall of each first annular plate is fixedly connected with four first connecting rods in a surrounding manner. This PCB circuit board moves back membrane self-cleaning equipment can independently wash every PCB circuit board, has solved current belt cleaning device and can cause PCB circuit board surface to scrape colored problem in the cleaning process.
Description
Technical Field
The invention relates to the technical field of PCB cleaning, in particular to an automatic cleaning device for PCB film stripping.
Background
The PCB, a so-called printed circuit board in chinese, is an important electronic component, a support for electronic components, a carrier for electrical interconnection of electronic components, and is called a "printed" circuit board because it is manufactured by electronic printing.
The film stripping and cleaning equipment for the PCB in the prior art is generally used for placing a plurality of PCBs together for washing, so that the problem that the surface of the PCB is scratched in the washing process is caused, and the normal use of the PCB is influenced.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the PCB film-stripping automatic cleaning equipment which has the advantage of independently cleaning each PCB, and solves the problem that the surface of the PCB is scratched by the conventional cleaning device in the cleaning process.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: an automatic cleaning device for a PCB (printed circuit board) film stripping comprises a working box and a water tank, wherein supporting rods are fixedly connected with four corners of the upper surface of the water tank, the working box is fixedly connected with the upper ends of the four supporting rods, a rotating rod is arranged in the working box, the rear end rod wall of the rotating rod is rotatably connected with the rear side inner wall of the working box, the rear side outer wall of the working box is fixedly connected with a motor, the rear end of the rotating rod penetrates through the working box and is fixedly connected with the output end of the motor, the rod wall of the rotating rod is fixedly sleeved with two first annular plates, the side wall of each first annular plate is fixedly connected with four first connecting rods in a surrounding manner, the two first annular plates are fixedly connected with second annular plates through corresponding first connecting rods, a plurality of placing mechanisms are arranged between the two second annular plates, and the outer wall of one side of the working box is fixedly connected with a U-shaped plate, the lateral wall of U-shaped board is connected with washes the mechanism, wash the inside that the upper end of mechanism runs through to the work box, the through-hole has been seted up to the lateral wall of water tank, the inside cover of through-hole is equipped with filtering mechanism, filtering mechanism with wash the mechanism phase-match, the bottom fixedly connected with aqueduct of work box, the lower extreme of aqueduct run through to the inside of water tank and with water tank fixed connection.
Preferably, the placing mechanism comprises a placing plate and two balancing weights, a placing groove is formed in the upper surface of the placing plate, a water outlet is formed in the bottom of the placing groove, two second connecting rods and two second connecting rods are fixedly connected to the upper surface of the placing plate symmetrically, two third annular plates and two fixing rods are fixedly connected to the upper ends of the second connecting rods, the fixing rods are rotatably sleeved in the third annular plates, the fixing rods are arranged in the two second annular plates, and the mutually-opposite ends of the fixing rods are fixedly sleeved with the corresponding second annular plates respectively.
Preferably, the flushing mechanism comprises a water pump, a first guide pipe and a second guide pipe, the water pump is fixedly connected with the side wall of the U-shaped plate, two ends of the water pump are respectively fixedly connected with the first guide pipe and the second guide pipe, the other end of the first guide pipe penetrates through the inside of the water tank and is fixedly connected with a spray head, and the other end of the second guide pipe is fixedly connected with a corrugated pipe and is fixedly connected with a third guide pipe through the corrugated pipe.
Preferably, filtering mechanism includes filter funnel, internal thread pipe and external screw thread pipe, the left end outer wall that the third pipe was located to the internal thread pipe rotation cover, the inside and the left end and the filter funnel fixed connection of through-hole are worn to locate in the external screw thread pipe activity, the inner wall that the internal thread pipe was located to external screw thread pipe thread cover, two handles of the pipe wall symmetry fixedly connected with of internal thread pipe.
Preferably, the front sides of the working box and the water tank are provided with openings, and the insides of the openings are rotatably connected with sealing plates through hinges.
Preferably, the outer wall of the filtering hopper is fixedly sleeved with a fourth annular plate, and the right side of the fourth annular plate is fixedly connected with a first sealing ring in contact connection with the inner wall of the water tank.
Preferably, a fifth annular plate is fixedly sleeved on the pipe wall of the internal threaded pipe, and a second sealing ring in contact connection with the outer wall of the water tank is fixedly connected to the left side of the fifth annular plate.
Preferably, the upper end of the water tank is fixedly connected with a water inlet pipe communicated with the inside of the water tank, and the left side of the water tank is fixedly connected with a water outlet pipe communicated with the inside of the water tank.
(III) advantageous effects
Compared with the prior art, the invention provides automatic film-stripping cleaning equipment for a PCB, which has the following beneficial effects:
1. this PCB circuit board moves back membrane self-cleaning equipment through the mechanism of placing that sets up, can place the PCB circuit board, utilizes the motor simultaneously and washes the mechanism, can wash the PCB circuit board that is located directly over when motor work and drive bull stick pivoted, can not appear causing PCB circuit board surface to scrape the condition of flower at the in-process that washes.
2. This PCB circuit board moves back membrane self-cleaning equipment through the filtering mechanism who sets up, can filter the inside water of water tank to carry out recycle to water, guaranteed the cleaning performance when the water of saving.
Drawings
FIG. 1 is a schematic structural view of an automatic cleaning apparatus for stripping a PCB provided by the present invention;
FIG. 2 is a rear view of FIG. 1;
FIG. 3 is a schematic cross-sectional view of FIG. 1;
FIG. 4 is an enlarged view of a portion A of FIG. 3;
FIG. 5 is an enlarged view of a portion B of FIG. 3;
fig. 6 is an enlarged view of a portion C of fig. 5.
In the figure: 1 work box, 2 water tanks, 3 bracing pieces, 4 bull sticks, 5 motors, 6 first annular plates, 7 first connecting rods, 8 second annular plates, 9U-shaped plates, 10 aqueducts, 11 placing plates, 12 balancing weights, 13 second connecting rods, 14 third annular plates, 15 fixed rods, 16 water pumps, 17 first pipes, 18 second pipes, 19 shower nozzles, 20 bellows, 21 third pipes, 22 filter hoppers, 23 internal threaded pipes, 24 external threaded pipes, 25 blanking plates, 26 fourth annular plates, 27 first sealing rings, 28 fifth annular plates, 29 second sealing rings, 30 inlet pipes, 31 outlet pipes, 32 handles.
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. 1-6, an automatic cleaning device for PCB film stripping comprises a working box 1 and a water tank 2, wherein four corners of the upper surface of the water tank 2 are fixedly connected with support rods 3, the working box 1 is fixedly connected with the upper ends of the four support rods 3, a rotating rod 4 is arranged inside the working box 1, the rear end rod wall of the rotating rod 4 is rotatably connected with the rear inner wall of the working box 1, the rear outer wall of the working box 1 is fixedly connected with a motor 5, the rear end of the rotating rod 4 penetrates through the working box 1 and is fixedly connected with the output end of the motor 5, the rod wall of the rotating rod 4 is fixedly sleeved with two first annular plates 6, the side wall of each first annular plate 6 is fixedly connected with four first connecting rods 7 in a surrounding manner, the two first annular plates 6 are fixedly connected with second annular plates 8 through the corresponding first connecting rods 7, a plurality of placing mechanisms are arranged between the two second annular plates 8, one side outer wall fixedly connected with U-shaped plate 9 of work box 1, the lateral wall of U-shaped plate 9 is connected with washes the mechanism, washes the upper end of mechanism and runs through to the inside of work box 1, and the through-hole has been seted up to the lateral wall of water tank 2, and the inside cover of through-hole is equipped with filter mechanism, filter mechanism and washing mechanism phase-match, the bottom fixedly connected with aqueduct 10 of work box 1, the lower extreme of aqueduct 10 run through to the inside of water tank 2 and with water tank 2 fixed connection.
Placing the mechanism including placing board 11 and two balancing weights 12, the standing groove has been seted up to the upper surface of placing board 11, the delivery port has been seted up to the tank bottom of standing groove, place two second connecting rods 13 of the upper surface symmetry fixedly connected with of board 11, the equal fixedly connected with third annular plate 14 in upper end of two second connecting rods 13, the inside of two third annular plates 14 all rotates has cup jointed dead lever 15, two dead levers 15 set up in the inside of two second annular plates 8, and the one end that carries on the back mutually is fixed with the second annular plate 8 that corresponds respectively and cup joints, utilize to set up in every two balancing weights 12 of placing board 11 lower surface, the gravity that can utilize two balancing weights 12 makes places board 11 and is in the horizontality all the time, avoid the PCB circuit board to drop.
The mechanism that washes includes water pump 16, first pipe 17 and second pipe 18, the lateral wall fixed connection of water pump 16 and U-shaped board 9, the both ends of water pump 16 respectively with first pipe 17 and second pipe 18 fixed connection, the other end of first pipe 17 runs through to the inside and the fixedly connected with shower nozzle 19 of water tank 2, the other end fixedly connected with bellows 20 of second pipe 18 and through bellows 20 fixedly connected with third pipe 21, utilize the mechanism that washes that sets up, can be to the inside water spray of work box 1 at the water pump 16 during operation, thereby realize the washing to the PCB circuit board.
Filtering mechanism includes filter hopper 22, internal thread pipe 23 and external screw thread pipe 24, the left end outer wall that third pipe 21 was located to internal thread pipe 23 rotation cover, the inside and the left end and the filter hopper 22 fixed connection of through-hole are worn to locate in the activity of external screw thread pipe 24, the inner wall of internal thread pipe 23 is located to external screw thread pipe 24 thread cover, two handles 32 of pipe wall symmetry fixedly connected with of internal thread pipe 23, utilize the filtering mechanism who sets up, can filter the water after the washing, avoid causing water pump 16 to block up the damage, the used cycle of water has been realized simultaneously.
The opening has all been seted up to the front side of work box 1 and water tank 2, and two open-ended insides all are connected with shrouding 25 through hinge rotation, utilize the shrouding 25 that sets up, can carry out the shutoff to the opening of work box 1 and water tank 2, can be convenient for open work box 1 and water tank 2 simultaneously and maintain.
The fixed cover of outer wall of filter funnel 22 has connect fourth annular plate 26, and the right side fixedly connected with of fourth annular plate 26 and the first sealing washer 27 of the contact connection of water tank 2 inner wall utilize the first sealing washer 27 that sets up, can guarantee the leakproofness of through-hole department, avoid the condition that leaks to appear in the position of through-hole.
The fixed fifth annular plate 28 that has cup jointed of pipe wall of internal thread pipe 23, the second sealing washer 29 that the left side fixedly connected with of fifth annular plate 28 and the contact of water tank 2 outer wall are connected utilizes the second sealing washer 29 that sets up, can guarantee the leakproofness of the left end of internal thread pipe 23, avoids appearing the condition of leaking.
The upper end of the water tank 2 is fixedly connected with a water inlet pipe 30 communicated with the inside of the water tank 2, the left side of the water tank 2 is fixedly connected with a water outlet pipe 31 communicated with the inside of the water tank 2, water can be added into the water tank 2 by the aid of the arranged water inlet pipe 30, and cleaned sewage can be discharged by the aid of the arranged water outlet pipe 31.
In conclusion, when the automatic PCB stripping cleaning equipment is used, a PCB to be cleaned is placed in the corresponding placing groove, the sealing plate 25 of the working box 1 is closed, the motor 5 and the water pump 16 are started, the output end of the motor 5 drives the two first annular plates 6 to rotate through the rotating rod 4, the two first annular plates 6 are respectively coupled with the corresponding first connecting rods 7 to drive the corresponding second annular plates 8 to rotate, the two second annular plates 8 rotate and simultaneously drive the corresponding fixing rods 15 to move respectively, so that the rotation of each placing plate 11 can be realized, in the rotating process, because the lower surface of each placing plate 11 is symmetrically and fixedly connected with the two balancing weights 12, each placing plate 11 can always keep a horizontal state, when the water pump 16 works, water in the water tank 2 is filtered through the filtering mechanism and then is sprayed out from the spray head 19, so that the PCB moving right above the rotating rod 4 can be cleaned, the surface of the PCB can not be scratched in the cleaning process, and the service life of the PCB is ensured.
It is to be noted that the term "comprises," "comprising," or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a PCB circuit board moves back membrane self-cleaning equipment, includes work box (1) and water tank (2), its characterized in that: the four corners of the upper surface of the water tank (2) are fixedly connected with supporting rods (3), the working box (1) is fixedly connected with the upper ends of the four supporting rods (3), rotating rods (4) are arranged inside the working box (1), the rear end rod wall of each rotating rod (4) is rotatably connected with the inner wall of the rear side of the working box (1), the outer wall of the rear side of the working box (1) is fixedly connected with a motor (5), the rear end of each rotating rod (4) penetrates through the working box (1) and is fixedly connected with the output end of the motor (5), the rod wall of each rotating rod (4) is fixedly sleeved with two first annular plates (6), the side wall of each first annular plate (6) is fixedly connected with four first connecting rods (7) in a surrounding mode, and the two first annular plates (6) are fixedly connected with second annular plates (8) through the corresponding first connecting rods (7), be provided with a plurality of placement mechanisms between two second annular slabs (8), one side outer wall fixedly connected with U-shaped plate (9) of work box (1), the lateral wall of U-shaped plate (9) is connected with washes the mechanism, wash the inside that the upper end of mechanism runs through to work box (1), the through-hole has been seted up to the lateral wall of water tank (2), the inside cover of through-hole is equipped with filter mechanism, filter mechanism with wash the mechanism phase-match, the bottom fixedly connected with aqueduct (10) of work box (1), the lower extreme of aqueduct (10) run through to the inside of water tank (2) and with water tank (2) fixed connection.
2. The PCB film stripping automatic cleaning equipment according to claim 1, characterized in that: the placing mechanism comprises a placing plate (11) and two balancing weights (12), a placing groove is formed in the upper surface of the placing plate (11), a water outlet is formed in the bottom of the placing groove, two second connecting rods (13) are fixedly connected to the upper surface of the placing plate (11) symmetrically, two are fixedly connected to the upper end of each second connecting rod (13) and a third annular plate (14) and two are fixedly connected to the inner portion of each third annular plate (14) in a rotating mode, fixing rods (15) are arranged in the two second annular plates (8), and one end of each back of the body is fixedly connected with the corresponding second annular plate (8) in a sleeved mode.
3. The PCB film stripping automatic cleaning equipment according to claim 1, characterized in that: the flushing mechanism comprises a water pump (16), a first guide pipe (17) and a second guide pipe (18), the water pump (16) is fixedly connected with the side wall of the U-shaped plate (9), the two ends of the water pump (16) are respectively fixedly connected with the first guide pipe (17) and the second guide pipe (18), the other end of the first guide pipe (17) penetrates through the inside of the water tank (2) and is fixedly connected with a spray head (19), and the other end of the second guide pipe (18) is fixedly connected with a corrugated pipe (20) and is fixedly connected with a third guide pipe (21) through the corrugated pipe (20).
4. The PCB film stripping automatic cleaning equipment according to claim 3, characterized in that: filtering mechanism includes filter bowl (22), internal thread pipe (23) and external screw thread pipe (24), the left end outer wall that third pipe (21) were located to internal thread pipe (23) rotation cover, the inside and the left end and filter bowl (22) fixed connection of through-hole are worn to locate in external screw thread pipe (24) activity, the inner wall of internal thread pipe (23) is located to external screw thread pipe (24) thread bush, two handles (32) of the pipe wall symmetry fixedly connected with of internal thread pipe (23).
5. The PCB film stripping automatic cleaning equipment according to claim 1, characterized in that: the front sides of the working box (1) and the water tank (2) are provided with openings, and the insides of the openings are rotatably connected with sealing plates (25) through hinges.
6. The PCB film stripping automatic cleaning equipment according to claim 4, wherein: the outer wall of the filter hopper (22) is fixedly sleeved with a fourth annular plate (26), and the right side of the fourth annular plate (26) is fixedly connected with a first sealing ring (27) in contact connection with the inner wall of the water tank (2).
7. The PCB film stripping automatic cleaning equipment according to claim 4, wherein: the pipe wall of the internal thread pipe (23) is fixedly sleeved with a fifth annular plate (28), and the left side of the fifth annular plate (28) is fixedly connected with a second sealing ring (29) which is in contact connection with the outer wall of the water tank (2).
8. The PCB film stripping automatic cleaning equipment according to claim 1, characterized in that: the water tank is characterized in that the upper end of the water tank (2) is fixedly connected with a water inlet pipe (30) communicated with the inside of the water tank (2), and the left side of the water tank (2) is fixedly connected with a water outlet pipe (31) communicated with the inside of the water tank (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210662052.XA CN114871183B (en) | 2022-06-13 | 2022-06-13 | Automatic film-removing cleaning equipment for PCB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210662052.XA CN114871183B (en) | 2022-06-13 | 2022-06-13 | Automatic film-removing cleaning equipment for PCB |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114871183A true CN114871183A (en) | 2022-08-09 |
| CN114871183B CN114871183B (en) | 2024-03-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210662052.XA Active CN114871183B (en) | 2022-06-13 | 2022-06-13 | Automatic film-removing cleaning equipment for PCB |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114871183B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206997195U (en) * | 2017-07-10 | 2018-02-13 | 云南中鑫农业科技有限公司 | A kind of medicinal material cleaning machine |
| CN210076233U (en) * | 2019-04-29 | 2020-02-18 | 辽宁省农业科学院 | Rotary type liquid medicine circulating spraying device |
| CN216095119U (en) * | 2021-08-13 | 2022-03-22 | 鑫进新(天津)电子科技有限公司 | Be used for high-efficient belt cleaning device of PCB circuit board |
-
2022
- 2022-06-13 CN CN202210662052.XA patent/CN114871183B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206997195U (en) * | 2017-07-10 | 2018-02-13 | 云南中鑫农业科技有限公司 | A kind of medicinal material cleaning machine |
| CN210076233U (en) * | 2019-04-29 | 2020-02-18 | 辽宁省农业科学院 | Rotary type liquid medicine circulating spraying device |
| CN216095119U (en) * | 2021-08-13 | 2022-03-22 | 鑫进新(天津)电子科技有限公司 | Be used for high-efficient belt cleaning device of PCB circuit board |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114871183B (en) | 2024-03-15 |
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