CN117537588A - PCB circuit board drying device - Google Patents
PCB circuit board drying device Download PDFInfo
- Publication number
- CN117537588A CN117537588A CN202311767311.6A CN202311767311A CN117537588A CN 117537588 A CN117537588 A CN 117537588A CN 202311767311 A CN202311767311 A CN 202311767311A CN 117537588 A CN117537588 A CN 117537588A
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- Prior art keywords
- hot air
- strong wind
- box
- drying
- hot
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Links
- 238000001035 drying Methods 0.000 title claims abstract description 99
- 239000000428 dust Substances 0.000 claims abstract description 67
- 230000007246 mechanism Effects 0.000 claims description 36
- 238000009826 distribution Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 10
- 238000005192 partition Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000007723 transport mechanism Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 230000005389 magnetism Effects 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 230000002349 favourable effect Effects 0.000 description 9
- 239000000741 silica gel Substances 0.000 description 8
- 229910002027 silica gel Inorganic materials 0.000 description 8
- 239000002274 desiccant Substances 0.000 description 7
- 238000001914 filtration Methods 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
- F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/003—Supply-air or gas filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/02—Applications of driving mechanisms, not covered by another subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
Abstract
The application relates to the technical field of drying devices, and discloses a PCB circuit board drying device, through all setting up the gear piece in the gear drive subassembly of transport mechanism in the drying cabinet to magnetic gear, realize contactless meshing between the gear piece, all rotate both ends of going up transport roller and lower transport roller with transport mechanism simultaneously and connect on two sets of curb plates of frame through the bearing, reduce the friction of going up transport roller and lower transport roller and frame. Reduce the circumstances that produces the dust when transport mechanism operates, this application has the effect that reduces the dust content in drying device's the drying cabinet.
Description
Technical Field
The application relates to the field of drying devices, in particular to a PCB drying device.
Background
After the PCB circuit board (hereinafter referred to as a circuit board) is etched, spraying cleaning treatment is needed to remove etching liquid remained on the surface of the circuit board, and after spraying flushing, drying treatment is needed to be carried out on the circuit board through a drying device in order to timely remove the residual cleaning water on the surface of the circuit board.
In the related art, referring to fig. 1 and 2, the drying device includes a drying oven 1, a conveying mechanism 2, a strong wind component 3 and a hot wind component 4 are disposed in the drying oven 1, the conveying mechanism 2 is used for conveying a circuit board into the drying oven 1 and then conveying the circuit board out of the drying oven 1, and the strong wind component 3 and the hot wind component 4 are sequentially distributed along the conveying direction of the conveying mechanism 2. The strong wind component 3 is used for blowing strong wind to the top and bottom sides of the circuit board on the conveying mechanism 2, and the hot wind component 4 is used for blowing hot wind to the top and bottom sides of the circuit board of the conveying mechanism 2.
The conveying mechanism 2 includes a frame, an upper conveying portion 21, and a lower conveying portion 22; the frame comprises two side plates 20; the upper and lower conveying portions 21 and 22 are disposed between the two sets of side plates 20 with a gap for conveying the circuit board left between the upper and lower conveying portions 21 and 22. The upper conveying part 21 comprises a plurality of upper conveying rollers 211, and two ends of the upper conveying rollers 211 are respectively connected to the two side plates 20 in a rotating way; the lower conveying part 22 comprises a plurality of lower conveying rollers 221, and two ends of the lower conveying rollers 221 are respectively connected to the two side plates 20 in a rotating manner; the upper transfer roller 211 and the lower transfer roller 221 are coaxially connected with a plurality of transfer wheels at their outer sides Zhou Jun. One side of the frame is also provided with a gear transmission assembly 23, one ends of the upper conveying roller 211 and the lower conveying roller 221 are connected to the gear transmission assembly 23, and the gear transmission assembly 23 is formed by a plurality of gear pieces in contact and engagement and is used for driving the upper conveying roller 211 and the lower conveying roller 221 to rotate relatively so as to convey the circuit board.
When the circuit board is dried by the drying device, the circuit board to be dried is conveyed into the drying box 1 by the conveying mechanism 2, and after most of the top and bottom surfaces of the circuit board are cleaned by strong wind blown out by the strong wind component 3, the circuit board is further dried by hot wind blown out by the hot wind component 4.
In order to reduce the use of the drying device, the upper conveying roller, the lower conveying roller and the gear piece in the gear conveying mechanism are rusted, and meanwhile, when the upper conveying roller and the lower conveying roller rotate relatively to convey the circuit board, the circuit board is damaged, and the upper conveying roller, the lower conveying roller and the gear piece in the gear structure are all made of plastic materials.
For the above related art, when the conveying mechanism is operated, friction contact between the upper conveying roller and the lower conveying roller and the rack side plate and friction contact between the gear pieces in the gear transmission assembly can cause abrasion and generate dust, the dust is filled in the drying oven, and is easy to adhere to the surface of the circuit board of the conveying mechanism, so that pins of electronic components on the circuit board are easy to be corroded by the dust, the pins are rusted and broken, and the conductivity of the subsequent circuit board is affected, so that there is room for improvement.
Disclosure of Invention
In order to reduce the dust content in the drying cabinet, reduce the influence of dust to the circuit board, this application provides a PCB circuit board drying device.
The application provides a PCB circuit board drying device adopts following technical scheme:
the PCB drying device comprises a drying box, wherein a conveying mechanism, a strong wind component and a hot wind component are arranged in the drying box;
the conveying mechanism comprises a frame, an upper conveying part and a lower conveying part are arranged on the frame, and a conveying gap is reserved between the upper conveying part and the lower conveying part;
the frame comprises two sets of side plates which are oppositely arranged, the upper conveying part comprises a plurality of upper conveying rollers, the lower conveying part comprises a plurality of lower conveying rollers, and two ends of the upper conveying rollers and the lower conveying rollers are respectively and rotatably connected with the two side plates through bearings;
the machine frame is characterized in that one side of the machine frame is also provided with a gear transmission assembly, and the gear transmission assembly comprises an upper magnetic pinion coaxially connected with the end part of the upper conveying roller and a lower magnetic pinion coaxially connected with the end part of the lower conveying roller; the upper magnetic pinion is magnetically engaged with the lower magnetic pinion; the gear transmission assembly further comprises a driving rod, a plurality of magnetic main gears are coaxially connected to the driving rod corresponding to the plurality of lower magnetic auxiliary gears, and the magnetic main gears are magnetically meshed with the corresponding lower magnetic auxiliary gears; the gear transmission assembly further comprises a driving piece, wherein the driving piece is in driving connection with the driving rod and used for driving the driving rod to rotate.
Through adopting above-mentioned technical scheme, drive assembly orders about the actuating lever and drives a plurality of magnetism master gear and rotate, and magnetism master gear rotates and drives the relative rotation of upper conveying roller and lower conveying roller through the magnetism meshing between lower magnetism master gear and upper magnetism master gear. The circuit board to be dried is placed in a conveying gap between the upper conveying part and the lower conveying part, the upper conveying roller and the lower conveying roller can rotate relatively to convey the circuit board into the drying box, strong wind is blown to the top and bottom sides of the circuit board by the strong wind component to remove most of cleaning water on the surface of the circuit board, and hot wind is blown to the top and bottom sides of the circuit board by the hot wind component to further dry the surface of the circuit board, so that the drying treatment of the circuit board is realized. Through last magnetism pinion in the gear drive subassembly, lower magnetism pinion and magnetism master gear's setting for can realize contactless meshing between the gear piece in the gear drive subassembly, all rotate respectively through the bearing through the both ends of going up transfer roller and lower transfer roller and connect in two sets of curb plates simultaneously, reduced the friction of going up transfer roller and lower transfer roller both with the frame curb plate, effectively reduced the circumstances that the transport mechanism operation in-process produced the dust, be favorable to reducing the content of dust in the drying cabinet.
Preferably, the strong wind component comprises a strong wind fan and a strong wind gas-distributing box, wherein an air inlet and an air outlet of the strong wind fan are respectively communicated with a strong wind air inlet pipe and a strong wind air outlet pipe, and the strong wind air outlet pipe is communicated with the strong wind gas-distributing box; the strong wind dividing box is communicated with two groups of strong wind knives, the two groups of strong wind knives are respectively positioned at one side of the upper conveying part and the lower conveying part, which are opposite to each other, and the wind openings of the two groups of strong wind knives face to the conveying gap between the upper conveying part and the lower conveying part; the strong wind primary filter is arranged on the strong wind inlet pipe, and the strong wind secondary filter is arranged on the strong wind outlet pipe.
Through adopting above-mentioned technical scheme, the strong wind fan is with the air through the air-supply line suction and export to strong wind divides the gas box through the tuber pipe, blows out through two sets of strong wind mouths at last, utilizes the strong wind that two sets of strong wind knives blown out to blow out the clean water on circuit board top bottom two sides. Through the arrangement of the strong wind primary filter and the strong wind secondary filter, the dust content in strong wind blown by the strong wind knife is reduced, and the condition that external dust enters the drying box to pollute the circuit board is reduced.
Preferably, the hot air assembly comprises a hot air blower and a hot air distribution box, the air inlet and the air outlet of the hot air blower are respectively communicated with a hot air inlet pipe and a hot air outlet pipe, the hot air outlet pipe is communicated with the hot air distribution box, and a heater is arranged on the hot air outlet pipe; the hot air distribution box is communicated with two groups of hot air cutters, the two groups of hot air cutters are respectively positioned on the opposite sides of the upper conveying part and the lower conveying part, and the air openings of the two groups of hot air cutters face to the conveying gap between the upper conveying part and the lower conveying part; the hot air outlet pipe is provided with a hot air primary filter, and the hot air outlet pipe is also provided with a hot air secondary filter.
Through adopting above-mentioned technical scheme, the air heater is through drawing in the back through the air-supply line with the air and export through the tuber pipe that goes out, and the air of output forms hot-blast inflow to in the hot-blast branch gas box after the heater heats to finally discharge through two sets of hot-blast air knife, carries out the drying to circuit board top and bottom two sides through the hot-blast of two sets of hot-blast air knife blowout. Through the arrangement of the hot air primary filter and the hot air secondary filter, the hot air input into the drying box is filtered and dedusted, so that the content of dust in the drying box is reduced.
Preferably, a partition plate is arranged in the drying box, the partition plate divides the inner cavity of the drying box into a strong air cavity and a hot air cavity, and a notch for the conveying mechanism to penetrate is formed in the partition plate; the strong wind knife is positioned in the strong wind cavity, and the hot wind knife is positioned in the hot wind cavity; the hot air inlet pipe is communicated with the hot air cavity.
Through adopting above-mentioned technical scheme, realize the hot-blast circulation of hot-blast intracavity, on the one hand, be favorable to keeping hot-blast intracavity heat stable, be convenient for transmit to the circuit board in the hot-blast intracavity to dry better, on the other hand compares the mode of carrying out the air inlet through the external world, is favorable to reducing thermal loss and the waste of energy.
Preferably, a plurality of dust removing drawers are further arranged in the hot air cavity, the dust removing drawers are positioned below the lower conveying part, and dust binding paper is arranged in the dust removing drawers.
Through adopting above-mentioned technical scheme, two groups of hot-blast air knives of hot-blast subassembly blow hot-blast messenger's hot-blast intracavity air and produce the air current disturbance, and the air in the hot-blast intracavity strikes the dust paper on the dust removal drawer under the air current disturbance effect, utilizes the dust in the dust paper removal air, is favorable to further getting rid of the dust content in the hot-blast chamber.
Preferably, the dust removing drawer penetrates through the two groups of side plates, and one end of the dust removing drawer is inserted into the side wall of the drying box.
Through adopting above-mentioned technical scheme for dust removal drawer can follow the drying cabinet lateral wall and take out, conveniently changes the bonding dirt paper in the dust removal drawer, so that the dust that glues dirt paper can be stained with the dust of the interior air of hot-blast main better.
Preferably, an observation port is formed in the top of the drying box and is communicated with the hot air cavity, and a cover plate for sealing the observation port is further arranged on the top of the drying box; the bottom of the cover plate is provided with a mesh box, and silica gel desiccant particles are filled in the mesh box.
Through adopting above-mentioned technical scheme, through the water vapor accessible that produces when two sets of hot-blast air knives blow hot-blast in order to dry the circuit board is located the silica gel drier in hot-blast chamber top mesh case and absorbs, when being favorable to reducing hot-blast circulation, too much in the hot-blast vapor influences the condition of circuit board stoving effect.
Preferably, the cover plate is fixedly penetrated with a connecting pipe, the mesh box is inserted into the bottom end of the connecting pipe, the top end of the connecting pipe is also inserted with a sealing plate, and the top end of the connecting pipe is also provided with an exhaust fan.
By adopting the technical scheme, the mesh box is arranged at the bottom of the cover plate. After the subsequent drying box stops drying the circuit board, the two groups of hot air knives blow out hot air to dry and heat the silica gel drying agent in the mesh box, so that the silica gel drying agent is regenerated and reduced, the sealing plate is pulled out and the exhaust fan is started when the mesh box is dried through the hot air component through the arrangement of the exhaust fan, and the steam generated when the silica gel drying agent is heated and dried through the exhaust fan is timely discharged out of the hot air cavity.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through last magnetism pinion in the gear drive subassembly, lower magnetism pinion sets up with magnetism master gear, realizes contactless meshing between the gear piece in the gear drive subassembly, when being favorable to reducing transport mechanism operation, because of the circumstances that the wearing and tearing of gear piece produced the dust, is favorable to reducing the dust content in the drying cabinet, reduces the influence of dust to the circuit board in the drying cabinet.
2. A strong wind primary filter is arranged on the strong wind inlet pipe, and a strong wind secondary filter is arranged on the strong wind outlet pipe; the dust filter is convenient for carrying out dust filtration on strong wind blown into the strong wind cavity, and the dust content in the drying oven is further reduced.
3. The hot air inlet pipe of the hot air blower is communicated with the hot air cavity, so that the circulating flow of hot air in the hot air cavity can be realized, on one hand, the stability of heat in the hot air cavity is facilitated to be maintained, on the other hand, the waste of heat in the hot air cavity can be reduced, and the energy is conveniently and better saved.
4. The mesh box is arranged below the cover plate, silica gel drying agent particles are filled in the mesh box, water vapor generated during drying of the circuit board by the hot air component in the subsequent drying box can be absorbed by the water vapor in the mesh box, the content of the water vapor in the hot air cavity is reduced, and the hot air circularly blown by the hot air component can be used for drying the circuit board better.
Drawings
Fig. 1 is a schematic view of a structure of a conventional drying apparatus according to the present application.
Fig. 2 is a partial schematic view of the present application for illustrating a transfer mechanism in a conventional drying apparatus.
Fig. 3 is a schematic view showing the structure of a drying apparatus according to an embodiment.
Fig. 4 is a schematic view showing the position of the conveying mechanism in the drying oven according to the embodiment.
Fig. 5 is a partial schematic diagram of an embodiment for illustrating a transfer structure.
Fig. 6 is a schematic diagram of the internal structure of a strong wind chamber of the drying oven according to an embodiment.
Fig. 7 is a schematic diagram of an internal structure of a strong wind chamber of the drying oven according to an embodiment.
Fig. 8 is a schematic structural view of a cover plate according to a second embodiment.
Reference numerals illustrate:
1. a drying box; 10. a work table; 11. a partition plate; 12. a strong wind cavity; 13. a hot air chamber; 14. a cover plate; 2. a conveying mechanism; 20. a side plate; 201. an upper bearing seat; 202. a lower bearing seat; 21. an upper conveying part; 211. an upper conveying roller; 22. a lower conveying part; 221. a lower conveying roller; 23. a gear drive assembly; 231. a magnetic pinion gear is arranged on the upper part; 232. a lower magnetic pinion gear; 234. a magnetic main gear; 233. a driving rod; 230. a driving member; 3. a strong wind component; 31. a strong wind blower; 311. strong wind inlet pipe; 312. strong wind outlet pipe; 32. strong wind divides the gas box; 33. a strong wind knife; 34. a strong wind primary filter; 35. a strong wind secondary filter; 4. a hot air assembly; 41. a hot air blower; 411. a hot air inlet pipe; 412. a hot air outlet pipe; 46. a heater; 42. a hot air distribution box; 43. a hot air knife; 44. a hot air primary filter; 45. a hot air secondary filter; 5. a dust removing drawer; 6. a connecting pipe; 61. a mesh box; 611. a feeding tube; 612. sealing cover; 62. a master socket; 63. a sealing plate; 64. a secondary socket; 65. and (5) an exhaust fan.
Detailed Description
The present application is described in further detail below in conjunction with figures 3-8.
The embodiment of the application discloses a PCB circuit board drying device.
Example 1
A PCB drying device. Referring to fig. 3 and 4, the drying oven 1 includes a drying oven 1, and the drying oven 1 is provided with a conveying mechanism 2, a strong wind assembly 3, and a hot wind assembly 4. The conveying mechanism 2 is positioned in the drying box 1, the input end and the output end of the conveying mechanism 2 extend out of the two ends of the drying box 1 respectively, and the two ends of the drying box 1 are provided with notches for the conveying mechanism 2 to penetrate. The strong wind component 3 and the hot wind component 4 are distributed in sequence along the conveying direction of the conveying mechanism 2, the strong wind component 3 is used for blowing strong wind to the top and bottom sides of the circuit board on the conveying mechanism 2, and the hot wind component 4 is used for blowing hot wind to the top and bottom sides of the circuit board on the conveying mechanism 2.
Referring to fig. 4 and 5, the conveying mechanism 2 includes a frame, an upper conveying portion 21 and a lower conveying portion 22, the frame includes two sets of side plates 20, the two sets of side plates 20 are vertically fixed at the bottom of the drying box 1, and two ends of the side plates 20 extend out of the drying box 1. The upper conveying part 21 and the lower conveying part 22 are positioned between the two groups of side plates 20, and a conveying gap for conveying the circuit board is reserved between the upper conveying part 21 and the lower conveying part 22.
The upper conveying part 21 includes a plurality of upper conveying rollers 211 horizontally arranged, the lower conveying part 22 includes a plurality of lower conveying rollers 221 horizontally arranged, and a plurality of conveying wheels are coaxially connected to the outer circumferences of both the upper conveying rollers 211 and the lower conveying rollers 221. The upper conveying rollers 211 are in one-to-one correspondence with the lower conveying rollers 221.
The two sets of side plates 20 correspond to a plurality of upper conveying rollers 211 and are provided with a plurality of upper perforations, and the outer diameters of the upper perforations are larger than the outer diameters of the upper conveying rollers 211. The two sets of side plates 20 are provided with a plurality of lower perforations corresponding to the lower conveying rollers 221, and the outer diameters of the lower perforations are larger than the outer diameters of the lower conveying rollers 221. A plurality of upper bearing seats 201 are fixed on the opposite sides of the two sets of side plates 20 corresponding to the plurality of upper conveying rollers 211, and a plurality of lower bearing seats 202 are fixed on the opposite sides of the two sets of side plates 20 corresponding to the plurality of lower conveying rollers 221. The two ends of the upper conveying roller 211 are respectively and coaxially arranged in the upper through holes corresponding to the two groups of side plates 20 in a penetrating way, and the two ends of the upper conveying roller 211 are respectively arranged in the upper bearing seats 201 corresponding to the two groups of side plates 20 through bearings. Through the arrangement, the two ends of the upper conveying roller 211 and the lower conveying roller 221 are connected to the two groups of side plates 20 of the frame in a rotating way through the bearings, so that the upper conveying roller 211 and the lower conveying roller 221 are not in direct contact with the side plates 20 of the frame, and dust generated by abrasion of the upper conveying roller 211 and the lower conveying roller 221 is reduced. In this embodiment, the bearings are all existing ball bearings with sealing caps 612, which is beneficial to reducing dust generated by abrasion during the subsequent use of the bearings.
The outer side of the frame one side plate 20 is also provided with a gear transmission assembly 23, and the gear transmission assembly 23 comprises an upper magnetic pinion 231 coaxially fixed at the end part of the upper conveying roller 211 and a lower magnetic pinion 232 coaxially fixed at the end part of the lower conveying roller 221, wherein the upper magnetic pinion 231 is in magnetic engagement with the corresponding lower magnetic pinion 232.
The gear assembly 23 also includes a drive rod 233. The outer side of the side plate 20 is vertically connected with a plurality of connecting plates, and the driving rod 233 is fixed on the plurality of connecting plates through a plurality of bearings, so that the driving rod 233 is rotatably connected to the connecting plates. The driving rod 233 is located below the plurality of lower magnetic pinion gears 232, the driving rod 233 is coaxially connected with a plurality of magnetic main gears 234 corresponding to the plurality of lower magnetic pinion gears 232, and the magnetic main gears 234 are magnetically engaged with the corresponding lower magnetic pinion gears 232.
The gear transmission assembly 23 also comprises a driving piece 230, the driving piece 230 comprises a driving motor arranged on the outer side wall of the bottom of the drying box 1, one end of a driving rod 233 extends out of the drying box 1, one end of the driving rod 233 extending out of the drying box 1 is connected with the output end of the driving motor through a synchronous sprocket, driving connection between the driving piece 230 and the driving rod 233 is realized,
when the gear transmission assembly 23 operates, the driving rod 233 is driven to rotate by the driving motor, the driving rod 233 rotates and simultaneously, the lower magnetic pinion 232 and the upper magnetic pinion 231 are driven to rotate by the magnetic main gear 234, so that the upper conveying roller 211 and the lower conveying roller 221 are driven to relatively rotate, and the conveying of the circuit board is realized by the relative rotation of the upper conveying roller 211 and the lower conveying roller 221.
Through the above setting, in gear transfer mechanism 2, go up between magnetism pinion 231 and the magnetism pinion 232 down and be contactless meshing between magnetism pinion 232 and the magnetism master gear 234 down, compare the connecting means that the gear piece is contact engagement in traditional gear transfer mechanism, be favorable to reducing the circumstances that produces the dust because of wearing and tearing in the follow-up gear piece rotation process.
Referring to fig. 1 and 6, a table 10 is provided at the bottom of the drying cabinet 1. The inner cavity of the drying box 1 is also vertically fixed with a baffle plate 11, the outer periphery of the baffle plate 11 is connected with the inner periphery of the drying box 1, and the baffle plate 11 is used for dividing the inner cavity of the drying box 1 to form a strong air cavity 12 and a hot air cavity 13.
The strong wind component 3 comprises a strong wind blower 31 and a strong wind gas separation box 32; the strong wind blower 31 is installed at the bottom of the workbench 10, and the strong wind air distribution box 32 is installed in the strong wind cavity 12. The air inlet end and the air outlet end of the strong wind blower 31 are respectively communicated with a strong wind inlet pipe 311 and a strong wind outlet pipe 312. The strong wind inlet pipe 311 is communicated with the outside. The strong wind air outlet pipe 312 is far away from one end of the strong wind fan 31 and is communicated with the strong wind air distribution box 32, the strong wind air distribution box 32 is communicated with two groups of strong wind blades 33, the two groups of strong wind blades 33 are respectively positioned on the upper conveying part 21 and the lower conveying part 22, the air outlets of the two groups of strong wind blades 33 face the conveying gap between the upper conveying part 21 and the lower conveying part 22, through the arrangement, air is pumped into the strong wind air distribution box 32 through the strong wind air inlet pipe 311 by the strong wind fan 31 and is then pumped into the strong wind air distribution box 32 by the strong wind air outlet pipe 312, and is then blown out by the two groups of strong wind blades 33, and most of clean water positioned on the two sides of the top and the bottom of the circuit board on the conveying gap of the conveying mechanism 2 is blown out by the strong wind blown out by the two groups of strong wind blades 33.
The strong wind knives 33 on the upper conveying part 21 are staggered with the upper conveying roller 211, and the strong wind knives 33 on the lower conveying part 22 are staggered with the lower conveying roller 221, so that the strong wind knives 33 of the two groups can blow strong wind toward the conveying gap between the upper conveying part 21 and the lower conveying part 22 better.
The strong wind inlet pipe 311 is further provided with a strong wind primary filter 34 at one end far away from the strong wind blower 31, and a strong wind secondary filter 35 is further installed on the strong wind outlet pipe 312, in this embodiment, the strong wind primary filter 34 is a high efficiency filter for filtering dust with a particle size of 50 μm, and the strong wind secondary filter 35 is a high efficiency filter for filtering dust with a particle size of 0.3 μm. Through the arrangement, the dust content in strong wind blown into the drying oven 1 in the follow-up process is reduced, and the condition that the dust pollutes the circuit board on the conveying mechanism 2 is reduced.
Referring to fig. 1 and 7, the hot air assembly 4 is provided with a plurality of hot air fans 41 and hot air distribution boxes 42, the hot air fans 41 are installed at the bottom of the workbench 10, and the hot air distribution boxes 42 are installed in the hot air cavity 13. The air inlet end and the air outlet end of the hot air blower 41 are respectively communicated with a hot air inlet pipe 411 and a hot air outlet pipe 412, the hot air inlet pipe 411 is communicated with the hot air cavity 13, and the heater 46 is installed on the hot air outlet pipe 412, in this embodiment, the heater 46 is a pipeline heater, and is used for heating the air output by the hot air blower 41 through a hot air output pipe to form hot air. The hot air outlet pipe 412 is communicated with the hot air distribution box 42, the hot air distribution box 42 is also communicated with two groups of hot air knives 43, the two groups of hot air knives 43 are oppositely arranged, the two groups of hot air knives 43 are respectively erected on the upper conveying part 21 and the lower conveying part 22, and the air outlets of the two groups of hot air knives 43 face to the conveying gap between the upper conveying part 21 and the lower conveying part 22. Through the arrangement, the hot air blower 41 pumps air in the hot air cavity 13 through the hot air inlet pipe 411 and then pumps the air out through the hot air outlet pipe 412, the air is heated by the heater 46 on the hot air outlet pipe 412 to form hot air and flows into the hot air distribution box 42, and finally the hot air is blown out through the two groups of hot air blades 43, and the top and bottom two sides of the circuit board on the conveying mechanism 2 are dried by the hot air blown out by the two groups of hot air blades 43, so that residual moisture on the circuit board is removed.
The hot air inlet pipe 411 is communicated with the hot air cavity 13, so that the circulation flow of hot air in the hot air cavity 13 is realized, and on one hand, the heat stability in the hot air cavity 13 is maintained; on the other hand, the waste of heat in the hot air cavity 13 is reduced, and the energy conservation is facilitated.
The hot air knives 43 on the upper conveying part 21 are staggered with the upper conveying roller 211, and the hot air knives 43 on the lower conveying part 22 are staggered with the lower conveying roller 221, so that the two groups of hot air knives 43 can blow hot air toward the conveying gap between the upper conveying part 21 and the lower conveying part 22 better to dry the circuit board.
The hot air inlet duct 411 is provided with a hot air primary filter 44, and the hot air outlet duct 412 is also provided with a hot air secondary filter 45, and in this embodiment, the hot air primary filter 44 is a high-efficiency filter for filtering dust with a particle size of 5 μm, and the hot air secondary filter 45 is a high-efficiency filter for filtering dust with a particle size of 0.3 μm. With the above arrangement, the dust content in the hot air blown into the drying oven 1 by the subsequent hot air knife 43 is reduced, and the condition that the dust pollutes the circuit board on the conveying mechanism 2 is reduced.
The hot air cavity 13 is also internally and horizontally provided with a plurality of dust removing drawers 5, the dust removing drawers 5 are all positioned below the lower conveying part 22 of the conveying mechanism 2 and are uniformly distributed along the conveying direction of the conveying mechanism 2, dust dipping paper is adhered to the dust removing drawers 5, through the arrangement, the two groups of hot air blades 43 blow hot air to ensure that air flow disturbance generated in the hot air cavity 13 drives air in the hot air cavity 13 to impact the dust sticking paper on the dust removing drawers 5 in a reciprocating manner, and dust in the air in the hot air cavity 13 is adhered by the dust sticking paper, so that the dust content in the hot air cavity 13 is further reduced.
The dust removing drawer 5 is inserted into the side wall of one side of the drying box 1, and the dust removing drawer 5 penetrates through the two groups of side plates 20 of the frame, so that the dust removing drawer 5 is conveniently pulled out of the drying box 1 through the arrangement, and the subsequent replacement of dust adhering paper is convenient.
The implementation principle of the first embodiment is as follows: the circuit board to be dried is transferred into the drying oven 1 through the conveying mechanism 2, most of clean water on the top and bottom surfaces of the circuit board is blown out by strong wind blown out by the two groups of strong wind blades 33 of the strong wind component 3, and then the top and bottom surfaces of the circuit board are further dried by hot wind blown out by the two groups of hot wind blades 43 of the hot wind component 4, so that the drying treatment of the circuit board is realized.
Example two
Referring to fig. 8, the second embodiment is different from the first embodiment in that: the access hole is offered at drying cabinet 1 top and access hole and hot-blast chamber 13 intercommunication, and drying cabinet 1 top still is provided with the apron 14 that is used for shutoff top access hole, and apron 14 one side articulates in access hole edge.
The cover plate 14 is fixedly penetrated with a connecting pipe 6, two ends of the connecting pipe 6 respectively extend out of the upper surface and the lower surface of the cover plate 14, the bottom end of the connecting pipe 6 is spliced with a mesh box 61, a main jack 62 for splicing the mesh box 61 is formed in the periphery of one side of the connecting pipe 6, and the mesh box 61 is filled with silica gel desiccant particles. The top end of the connecting pipe 6 is also inserted with a sealing plate 63 for blocking the pipe orifice at the top end of the connecting pipe 6, and the periphery of one side of the connecting pipe 6 is provided with a secondary socket 64 for inserting the sealing plate 63. The top section of the connecting pipe 6 is also provided with a plurality of exhaust fans 65, and the exhaust fans 65 are positioned below the sealing plate 63.
Through the arrangement, when the circuit board is dried by the drying device, the two groups of hot air knives 43 blow out hot air to dry the water vapor generated when the circuit board is dried, and silica gel desiccant particles in the mesh box 61 at the bottom end of the connecting pipe 6 can be absorbed, so that the content of the water vapor in the air in the hot air cavity 13 can be reduced, the condition that the effect of hot air drying is affected due to excessive content of the water vapor in hot air in the subsequent hot air cavity 13 during hot air circulation can be reduced. After the drying circuit board is stopped by the subsequent drying device, the sealing plate 63 is pulled out of the connecting pipe 6, the exhaust fan 65 is started, the hot air component 4 is started, the silica gel drying agent in the mesh box 61 is heated, reduced and regenerated by heat generated by hot air blown by two groups of air knives of the hot air component 4, so that moisture adsorbed by the silica gel drying agent is removed, and the exhaust fan 65 is arranged, so that moisture absorbed by the silica gel drying agent is heated and evaporated in time to form steam which is conveniently pulled out of the connecting pipe 6.
One end of the mesh box 61 extends out of the connecting pipe 6, one end of the mesh box 61 extending out of the connecting pipe 6 is communicated with a feeding pipe 611, and a sealing cover 612 is sleeved on the pipe orifice of the feeding pipe 611, so that silica gel desiccant particles in the mesh box 61 can be replaced conveniently.
The implementation principle of the second embodiment is the same as that of the first embodiment, so that a detailed description thereof will be omitted.
The gear piece is magnetic gear in the gear drive assembly of this transport mechanism 2, has realized contactless meshing between the gear piece, has reduced the production of transport mechanism operation in-process dust, and the filter is all installed with air-out department and the air inlet department and the air-out department of hot-blast fan 41 in the strong wind subassembly 3 simultaneously, is favorable to further reducing the interior dust content of drying cabinet 1, and then when making the dry circuit board through drying device, the circuit board is difficult for being polluted by the dust.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. The PCB drying device comprises a drying box (1), wherein a conveying mechanism (2), a strong wind component (3) and a hot wind component (4) are arranged in the drying box (1); the conveying mechanism (2) comprises a frame, an upper conveying part (21) and a lower conveying part (22) are arranged on the frame, and a conveying gap is reserved between the upper conveying part (21) and the lower conveying part (22); the frame comprises two sets of side plates (20) which are oppositely arranged, the upper conveying part (21) comprises a plurality of upper conveying rollers (211), the lower conveying part (22) comprises a plurality of lower conveying rollers (221), and two ends of the upper conveying rollers (211) and two ends of the lower conveying rollers (221) are respectively and rotatably connected with the two side plates (20) through bearings; the method is characterized in that:
a gear transmission assembly (23) is further arranged on one side of the frame, and the gear transmission assembly (23) comprises an upper magnetic pinion (231) coaxially connected with the end part of the upper conveying roller (211) and a lower magnetic pinion (232) coaxially connected with the end part of the lower conveying roller (221); the upper magnetic pinion (231) is magnetically engaged with the lower magnetic pinion (232); the gear transmission assembly (23) further comprises a driving rod (233), a plurality of magnetic main gears (234) are coaxially connected to the driving rod (233) corresponding to the plurality of lower magnetic auxiliary gears (232), and the magnetic main gears (234) are magnetically meshed with the corresponding lower magnetic auxiliary gears (232); the gear transmission assembly (23) further comprises a driving piece (230), and the driving piece (230) is in driving connection with the driving rod (233) and is used for driving the driving rod (233) to rotate.
2. The PCB drying apparatus of claim 1, wherein: the strong wind assembly (3) comprises a strong wind fan (31) and a strong wind separating box (32), wherein an air inlet and an air outlet of the strong wind fan (31) are respectively communicated with a strong wind air inlet pipe (311) and a strong wind air outlet pipe (312), and the strong wind air outlet pipe (312) is communicated with the strong wind separating box (32); the strong wind dividing box (32) is communicated with two groups of strong wind knives (33), the two groups of strong wind knives (33) are respectively positioned on one side of the upper conveying part (21) and one side of the lower conveying part (22) opposite to each other, and the wind openings of the two groups of strong wind knives (33) face to a conveying gap between the upper conveying part (21) and the lower conveying part (22); the strong wind inlet pipe (311) is provided with a strong wind primary filter (34), and the strong wind outlet pipe (312) is provided with a strong wind secondary filter (35).
3. The PCB drying apparatus of claim 2, wherein: the hot air assembly (4) comprises a hot air fan (41) and a hot air distribution box (42), wherein a hot air inlet pipe (411) and a hot air outlet pipe (412) are respectively communicated with an air inlet and an air outlet of the hot air fan (41), the hot air outlet pipe (412) is communicated with the hot air distribution box (42), and a heater (46) is arranged on the hot air outlet pipe (412); the hot air distribution box (42) is communicated with two groups of hot air knives (43), the two groups of hot air knives (43) are respectively positioned on the opposite sides of the upper conveying part (21) and the lower conveying part (22), and the air inlets of the two groups of hot air knives (43) face to the conveying gap between the upper conveying part (21) and the lower conveying part (22); the hot air outlet pipe (412) is provided with a hot air primary filter (44), and the hot air outlet pipe (412) is also provided with a hot air secondary filter (45).
4. A PCB board drying apparatus according to claim 3, wherein: a partition plate (11) is arranged in the drying box (1), the partition plate (11) divides the inner cavity of the drying box (1) into a strong air cavity (12) and a hot air cavity (13), and the partition plate (11) is provided with a notch for the conveying mechanism (2) to penetrate through; the strong wind knife (33) is positioned in the strong wind cavity (12), and the hot wind knife (43) is positioned in the hot wind cavity (13); the hot air inlet pipe (411) is communicated with the hot air cavity (13).
5. The drying apparatus for PCB boards according to any one of claim 4, wherein: a plurality of dust removing drawers (5) are further arranged in the hot air cavity (13), the dust removing drawers (5) are positioned below the lower conveying part (22), and dust binding paper is arranged in the dust removing drawers (5).
6. The PCB drying apparatus of claim 5, wherein: the dust removing drawers (5) penetrate through the two groups of side plates (20), and one ends of the dust removing drawers (5) are inserted into the side walls of the drying box (1).
7. The PCB drying apparatus of claim 4, wherein: an observation port is formed in the top of the drying box (1) and is communicated with the hot air cavity (13), and a cover plate (14) for sealing the observation port is further arranged on the top of the drying box (1); the bottom of the cover plate (14) is provided with a mesh box (61), and silica gel desiccant particles are filled in the mesh box (61).
8. The PCB drying apparatus of claim 7, wherein: the cover plate (14) is fixedly provided with a connecting pipe (6) in a penetrating mode, the mesh box (61) is inserted into the bottom end of the connecting pipe (6), the top end of the connecting pipe (6) is also inserted with a sealing plate (63), and the top end of the connecting pipe (6) is also provided with an exhaust fan (65).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311767311.6A CN117537588A (en) | 2023-12-21 | 2023-12-21 | PCB circuit board drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311767311.6A CN117537588A (en) | 2023-12-21 | 2023-12-21 | PCB circuit board drying device |
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| Publication Number | Publication Date |
|---|---|
| CN117537588A true CN117537588A (en) | 2024-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311767311.6A Pending CN117537588A (en) | 2023-12-21 | 2023-12-21 | PCB circuit board drying device |
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| CN (1) | CN117537588A (en) |
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| CN203928649U (en) * | 2014-06-27 | 2014-11-05 | 定颖电子（昆山）有限公司 | Dustproof pcb board drying plant |
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| CN206247817U (en) * | 2016-12-06 | 2017-06-13 | 安徽蓝通科技股份有限公司 | A kind of tower drier for plastic grain |
| CN216245132U (en) * | 2021-11-20 | 2022-04-08 | 深圳市中络电子有限公司 | Cleaning and drying equipment for circuit board production |
| CN217636639U (en) * | 2022-07-07 | 2022-10-21 | 安徽荃银锦秀种业科技有限公司 | Low temperature drying device is used in rice seed production |
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2023
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10062618A1 (en) * | 2000-12-15 | 2002-07-11 | Systronic Systemloesungen Fuer | Straight-through air dryer for circuit boards or conduction paths, has blower unit for blowing part-air-flow in transport direction |
| CN202481636U (en) * | 2012-01-05 | 2012-10-10 | 翔庆精密工业有限公司 | Magnetic-transmission self-propelled type temporary storage machine for circuit boards |
| CN102706116A (en) * | 2012-01-15 | 2012-10-03 | 刘芝英 | Printed circuit board drying device |
| CN103851887A (en) * | 2012-12-07 | 2014-06-11 | 深南电路有限公司 | PCB (printed circuit board) drying machine |
| CN104422264A (en) * | 2013-09-10 | 2015-03-18 | 昆山东威电镀设备技术有限公司 | Vertical circuit board drying baking device for vertical continuous electroplating equipment |
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| CN206247817U (en) * | 2016-12-06 | 2017-06-13 | 安徽蓝通科技股份有限公司 | A kind of tower drier for plastic grain |
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| CN217636639U (en) * | 2022-07-07 | 2022-10-21 | 安徽荃银锦秀种业科技有限公司 | Low temperature drying device is used in rice seed production |
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