CN101583246B - Printed circuit board cleaning machine - Google Patents
Printed circuit board cleaning machine Download PDFInfo
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- CN101583246B CN101583246B CN200910085347XA CN200910085347A CN101583246B CN 101583246 B CN101583246 B CN 101583246B CN 200910085347X A CN200910085347X A CN 200910085347XA CN 200910085347 A CN200910085347 A CN 200910085347A CN 101583246 B CN101583246 B CN 101583246B
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Abstract
The embodiment of the invention provides a printed circuit board cleaning machine, belonging to the technical field of printed circuit cleaning. The cleaning machine comprises a chassis, a master control system, a backing water treatment system, a cleaning system, a drying system, a waste water treatment system and a water detection system; the systems are all arranged in the chassis, the main control system is electrically connected with other systems and controls the operation of other systems; wherein, a water inlet and a water outlet are arranged on the backing water treatment system, the water outlet of the backing water treatment system is connected with the cleaning system, and the water outlet of the cleaning system is connected with the waste water treatment system; the drying system is connected with an air inlet of the cleaning system; the detection ends of the water detection system are respectively arranged on the water outlet ends of the backing water treatment system andthe cleaning system, which are used for detecting the effluent water of the backing water treatment system and the cleaning system. The cleaning machine has the advantages of high cleaning efficiency , good cleaning effects, cleaning water saving and environmental protection.
Description
Technical field
The present invention relates to circuit board and clean the field, relate in particular to a kind of printed circuit board cleaning machine.
Background technology
In the circuit board welding dress connection of electron trade, after components and parts on the circuit board are finished processing by multiple welding procedure, on the plate face because the influence of solder flux, scolder and environment, the components and parts pin is detained the residue of some down, these residues directly affect product quality, must clean could guarantee circuit board electricity function index finally with the working life of the stability, reliability and the complete machine that guarantee electronic product, so cleaning circuit plate assembly is a very important and technical stronger job.
At present, the scaling powder type that adopts in the PCB of electronics industry assembly welding dress connection has: water-soluble, colophony type or exempt from cleaning-type, and generally using more is back two kinds, cleaning way in the past more adopts ethanol to scrub or ultrasonic waves for cleaning; But the ethanol washing has certain damage to the soldering-resistance layer and the components and parts of PCB circuit board, and the root of device pin is prone to the white mixture deposition after washing, and causes pin oxidation affects integrated circuit board electrical property; Ultrasonic waves for cleaning is to utilize hyperacoustic principle, converts electric energy to mechanical oscillation and produces the high pressure bubble, utilizes the sudden and violent dirt that breaks on the power impact circuit board of bubble.When cleaning printed circuit board (PCB), need correctly select hyperacoustic power for use.In use be prone to ultrasonic power regulate excessive, the device pin excessive phenomenons such as loosening loose contact or device failure that cause that are hit on the printed circuit board (PCB), it is too small that ultrasonic power is regulated, and problems such as the printed circuit board (PCB) washing is not clean occur.
Be the reliability of assurance circuit board components and the stability of integrated circuit board electrical property, at present circuit board components is cleaned and just develop towards water base cleaning direction, water base cleaning mainly is after former water treatment is become deionized water circuit board to be cleaned, water base cleaning is higher to requirements in water quality, and the water base cleaning equipment that uses on the market has separate type water washer and one body swimming cleaning machine now.Wherein, deionized water treatment system in the separate type water washer is separated with purging system, owing to lack the complete machine form, occupied ground is bigger, the inconvenience that has brought equipment to install and make up particularly can not be satisfied research and development institution to the demand of pcb board trial-manufacturing process to the integrated circuit board comprehensive treatment capability.The quality of the deionized water that this simple connection generates and hydraulic pressure are all unstable, can cause the pcb board cleanliness factor of cleaning not reach test request, even printed circuit board (PCB) or device are caused unnecessary damage.Secondly, it is less that the drying system temperature of separation host is provided with scope, and drying time is longer.
And the one body swimming cleaning machine is the integral type printed circuit board (PCB) water washer that deionized water treatment system and purging system is integrated formation, but the inventor finds this integrated washer, because inside is not integrated with detection system and drying system, therefore can't detect the deionized water of generation and the waste water of discharge, can't determine promptly whether the deionized water that generates is qualified, and then the effect of influence cleaning, can't determine also whether the waste water of discharging can cause environmental pollution, also can't directly carry out flash baking to the printed circuit board (PCB) after cleaning, therefore, this integral type printed circuit board (PCB) water washer can't be finished whole flow processs of clean printed circuit board (PCB), it is low to cause washing plate efficiency, and it is big and can't guarantee to wash the plate effect to wash the pollution that causes behind the plate.
Summary of the invention
Based on above-mentioned existing in prior technology problem, the embodiment of the invention provides a kind of printed circuit board cleaning machine, has the plate efficiency of washing height, to wash plate effective and to wash the plate water outlet pollution-free.
The objective of the invention is to be achieved through the following technical solutions:
The embodiment of the invention provides a kind of printed circuit board cleaning machine, comprising:
Cabinet, master control system, prime water treatment system, purging system, drying system, Waste Water Treatment and water detection system;
Described each system all is arranged in the cabinet, and master control system is electrically connected with each system, controls each system's operation; Wherein, described prime water treatment system is provided with water inlet and delivery port, and the delivery port of prime water treatment system is connected with purging system, and the delivery port of purging system is connected with Waste Water Treatment;
Described drying system is connected with the air inlet of purging system;
Described water detection system, its test side are separately positioned on the water side of prime water treatment system and the water side of purging system, and the water outlet of prime water treatment system and purging system is detected.
Described prime water treatment system comprises:
Coarse filtration device, reverse-osmosis filtering device, heating-ultraviolet lamp sterilizing unit and fine filtering apparatus;
The water side of described coarse filtration device is connected in turn with reverse-osmosis filtering device, heating-ultraviolet lamp sterilizing unit and fine filtering apparatus.
Described reverse-osmosis filtering device comprises:
Booster pump, osmosis filtration membrane module and reverse osmosis water reflux;
The delivery port of described booster pump is communicated with the osmosis filtration membrane module by pipeline, the osmosis filtration membrane module is provided with filtered water outlet and refluxing opening, and the refluxing opening of described osmosis filtration membrane module by the road, the reverse osmosis water reflux returns the water inlet that is connected to booster pump.
Described reverse osmosis water reflux is formed by connecting by the road by backflow tank and return pressure control device, wherein, the water inlet of backflow tank is used to connect the refluxing opening of osmosis filtration membrane module, and the delivery port of return pressure control device is used to connect the water inlet of booster pump.
Described purging system comprises: deionized water tank, water-delivery pump, smart resin bed, circulating pump, heater, charging absorption pump, main frame cavity, spray arm and the cleaning frame assembly of mixing;
The water side of described deionized water tank by the road, water-delivery pump is connected with the smart resin bed that mixes, smart water side of mixing resin bed by the road, circulating pump is connected with heater, the water side of heater by the road be arranged on the main frame cavity in spray arm be connected, be provided with the cleaning frame assembly of fixing circuit board in the main frame cavity, the main frame cavity is provided with waste water discharge opening, air inlet and air outlet;
The discharging opening of charging absorption pump is connected with the main frame cavity by the road.
Described cleaning frame assembly comprises: clean frame and clean the frame underframe;
Described cleaning frame is the combined frame structure, cleans the frame fixed mount by both sides and connects how the group fixed frames constitute, and is equipped with the station of a plurality of plug-in mounting circuit boards on each fixed frame;
Clean frame and be arranged on the cleaning frame underframe, clean the frame underframe and be provided with pulley.
Described purging system also comprises: checkout gear, comprise: temp probe, optoelectronic switch and near switch, checkout gear is arranged in the described main frame cavity, be used for being electrically connected with the master control system of cleaning machine, whether detect the temperature in the main frame cavity, whether detect in the main frame cavity has water for cleaning and spray arm to rotate.
Described drying system comprises: blower fan, filter, calandria assembly, pipeline and temperature control equipment;
The air inlet of described blower fan is connected with filter, and the air outlet of blower fan is connected with the calandria assembly through pipeline, and the air inlet on the main frame cavity of the air outlet of calandria assembly and purging system is connected; The control end of described temperature control equipment is connected with the calandria electrical component, is used for controlling the calandria assembly according to the temperature of the air outlet of the calandria assembly that detects.
Described drying system also comprises: actuator and vacuum butterfly valve;
Described actuator is connected with vacuum butterfly valve, and the control end of actuator is electrically connected with described master control system, and described vacuum butterfly valve is arranged on the air outlet and the pipeline between the calandria assembly of described blower fan.
Described drying system also comprises: air outlet assembly and condensing unit, the air inlet of described air outlet assembly is connected with the air outlet of described purging system, the air outlet of air outlet assembly links to each other with the air inlet of described condensing unit, and the condensing unit air outlet returns the air inlet that is connected to described blower fan through pipeline.
The technical scheme that is provided by the invention described above embodiment as can be seen, in the embodiment of the invention master control system, prime water treatment system, purging system, drying system, Waste Water Treatment and water detection system are integrated in the cabinet, form a whole integrated form printed circuit board cleaning machine, but should printed circuit board cleaning machine finish whole treatment steps that printed circuit board (PCB)s are cleaned in deionized water generation and detection, cleaning, oven dry and waste water treatment and waste water detection etc. automatically, and have and wash the plate efficiency height, wash the advantage that plate is effective and save water for cleaning.
Description of drawings
Fig. 1 is the printed circuit board cleaning machine front sectional structure schematic diagram of the embodiment of the invention;
Fig. 2 is the printed circuit board cleaning machine back sectional structure schematic diagram of the embodiment of the invention;
Fig. 3 is the printed circuit board cleaning machine right side sectional structure schematic diagram of the embodiment of the invention;
Fig. 4 is the printed circuit board cleaning machine left side sectional structure schematic diagram of the embodiment of the invention;
Fig. 5 is the master control system structured flowchart of the printed circuit board cleaning machine of the embodiment of the invention;
Fig. 6 is the structural representation of prime water treatment system of the printed circuit board cleaning machine of the embodiment of the invention;
Fig. 7 is the structural representation of purging system of the printed circuit board cleaning machine of the embodiment of the invention;
Fig. 8 is the structural representation of cleaning frame of cleaning frame assembly of purging system of the printed circuit board cleaning machine of the embodiment of the invention;
Fig. 9 is the structural representation of cleaning frame underframe of the printed circuit board cleaning machine of the embodiment of the invention;
Figure 10 is the application schematic diagram of cleaning frame assembly of the printed circuit board cleaning machine of the embodiment of the invention;
The pipeline that Figure 11 is connected with purging system for the charging absorption pump of the printed circuit board cleaning machine of the embodiment of the invention is arranged on the structural representation on the cleaning machine;
Figure 12 is the charging absorption pump of printed circuit board cleaning machine of the embodiment of the invention and the structural representation of purging system connecting line;
Figure 13 is the structural representation of drying system of the printed circuit board cleaning machine of the embodiment of the invention.
Each label is among the figure:
The 1-water inlet, 2-coarse filtration device (two mechanical filter and active carbon filter), 3-booster pump, 4-osmosis filtration membrane module, the 5-heating-ultraviolet lamp sterilizing unit, 6-fine filtering apparatus (mixing bed), 7-deionized water tank, 8-water-delivery pump, the smart resin bed (resin container) that mixes of 9-, the 10-master control system, 11-charging absorption pump, 12-filter, 13-blower fan (containing the blower fan drive plate), the vacuum butterfly valve of 14-actuator control, 15-heater, 16-effluent filter, the 17-wastewater barrel, the discharge outlet of 18-Waste Water Treatment, 19-main frame cavity, 20-condensing unit.
The 201-reverse-osmosis filtering device, the outlet of 202-filtered water, 203-refluxing opening, 204-backflow tank, 205-return pressure control device;
301-cleans the frame assembly, and 302, circulating pump, the last spray arm of 303-, spray arm among the 304-, spray arm under the 305-, 306-air inlet, the 307-air outlet, the charging aperture of 308-main frame cavity, 309-slideway one, 310-slideway two, 311-cleans the frame underframe, and 312-cleans frame, 313-cleans the frame fixed mount, the 314-fixed frame, 315-feed pipe, the printed circuit board (PCB) that A-cleans;
The 401-actuator, 402-air outlet assembly, 403-temperature detect switch (TDS), 404-temperature probe, 405-calandria assembly.
Embodiment
For ease of understanding, the invention will be further described below in conjunction with the drawings and specific embodiments.
Embodiment
Present embodiment provides a kind of printed circuit board cleaning machine, is used for the PCB circuit board after being welded is cleaned automatically and dries, and shown in Fig. 1-4, this printed circuit board cleaning machine specifically comprises:
Cabinet, master control system, prime water treatment system, purging system, drying system, Waste Water Treatment and water detection system, each system all are arranged in the cabinet, and master control system is electrically connected with each system, control each system's operation; Wherein, the prime water treatment system is provided with water inlet and delivery port, and the delivery port of prime water treatment system is connected with purging system, and the delivery port of purging system is connected with Waste Water Treatment;
Drying system is connected with the air inlet of purging system;
The test side of water detection system is separately positioned on the place, water side of the water side of prime water treatment system and purging system, and the water outlet of prime water treatment system and purging system is detected.
The course of work of above-mentioned printed circuit board cleaning machine is: by the prime water treatment system light water of introducing is handled, purifying waste water after the processing reaches after testing and enters the purging system that has the water heating function after regulation requires, when the water yield reaches set point in the purging system, purging system carries circulating pump and heater begins execution work, water for cleaning is heated, charging absorption pump is started working when coolant-temperature gage reaches design temperature, suck cleaning agent in the main frame cavity water of purging system, printed circuit board (PCB) is repeatedly cleaned, carry out rinsing after repeatedly cleaning and make the printed circuit board (PCB) in the main frame cavity reach cleaning; In cleaning and rinse cycle, waste water enters Waste Water Treatment and is drained into wastewater barrel after treatment, after the printed circuit board (PCB) drying system oven dry after the cleaning, then finishes the clean flow process to printed circuit board (PCB).
Above control procedure is finished by master control system, specifically can realize by the singlechip control panel and the software control procedure of master control system, LCDs can be set outside the cabinet of cleaning machine to be shown, show by the parameter of LCDs cleaning process, and scavenging period, temperature and program etc. are provided with, that this printed circuit board cleaning machine uses is simple to operate, safety, convenience.The structured flowchart of master control system as shown in Figure 5.
Below in conjunction with Fig. 1-Figure 10 each system of above-mentioned printed circuit board cleaning machine is described further.
Prime water treatment system in the above-mentioned printed circuit board cleaning machine comprises: coarse filtration device 2, reverse-osmosis filtering device 201, heating-ultraviolet lamp sterilizing unit 5 and fine filtering apparatus 6; Wherein, coarse filtration device 2 one ends are connected with water inlet 1, and the water side of coarse filtration device 2 is connected in turn with reverse-osmosis filtering device 201, heating-ultraviolet lamp sterilizing unit 5 and fine filtering apparatus 6.
As shown in Figure 6, described reverse-osmosis filtering device 201 comprises: booster pump 3, osmosis filtration membrane module 4 and reverse osmosis water reflux; Wherein, the delivery port of booster pump 3 is communicated with osmosis filtration membrane module 4 by pipeline, osmosis filtration membrane module 4 is provided with filtered water outlet 202 and refluxing opening 203, and the refluxing opening 203 of this osmosis filtration membrane module 4 by the road, the reverse osmosis water reflux returns the water inlet that is connected to booster pump 3.Wherein, the reverse osmosis water reflux is formed by connecting by the road by backflow tank 204 and return pressure control device 205, wherein, the water inlet of backflow tank 204 is used to connect the refluxing opening 203 of osmosis filtration membrane module 4, and the delivery port of return pressure control device 205 is used to connect the water inlet of booster pump 3.The basic principle of this reverse osmosis water reflux is: booster pump is transported to reverse-osmosis filtering device with coarse filtration water, because the pressure that the osmosis filtration membrane module of reverse-osmosis filtering device needs is certain, can not surpass its higher limit, therefore at the osmosis filtration membrane module part water is entered the recirculation water water butt of reverse osmosis water reflux, carry out reduced pressure treatment, allow the water after the coarse filtration be unlikely to directly to discharge to slattern simultaneously, the water of recirculation water water butt enters reverse-osmosis filtering device again by the return pressure control device and carries out circulating filtration then.Solved like this this part recirculation water has directly been discharged wasting problem.
This prime water treatment system can realize coarse filtration, osmosis filtration, uviol lamp sterilization, plurality of processes such as smart filtration.At first light water is by coarse filter (being formed by connecting in turn by two mechanical filters and active carbon filter), after this by booster pump water is entered reverse-osmosis filtering device (entering the RO film as the osmosis filtration membrane module) under certain pressure, water comes out to enter into heating-ultraviolet lamp sterilizing unit from reverse-osmosis filtering device and carries out sterilization processing, after this enter into fine filter (three are mixed bed) and filter, at last the deionized water that generates is stored in the deionized water water butt as follow-up water for cleaning.
As shown in Figure 7, the purging system in the above-mentioned printed circuit board cleaning machine specifically comprises: deionized water tank 7, water-delivery pump 8, smart resin bed 9, circulating pump 302, heater 15, charging absorption pump 11, main frame cavity 19, spray arm (comprising three spray arms: go up spray arm 303, middle spray arm 304 and following spray arm 305) and the cleaning frame assembly 301 of mixing; Wherein, the water side of deionized water tank 7 by the road, water-delivery pump 8 is connected with the smart resin bed 9 that mixes, smart water side of mixing resin bed 9 by the road, circulating pump 302 is connected with heater 15, the water side of heater 15 by the road be arranged on main frame cavity 19 in each spray arm be connected, be provided with the cleaning frame assembly 301 of fixing circuit board in the main frame cavity 19, main frame cavity 19 is provided with air inlet 306 and air outlet 307; The discharging opening of charging absorption pump 11 is connected with the charging aperture 308 of main frame cavity by the road.
The structure of the cleaning frame assembly 301 that is provided with in the main frame cavity of above-mentioned purging system comprises shown in Fig. 8-10: clean frame 312 and clean frame underframe 311; Wherein, cleaning frame 312 is the combined frame structure, cleans frame fixed mount 313 by both sides and connects how group fixed frames 314 constitute, and is equipped with the station of a plurality of plug-in mounting circuit board A on each fixed frame 314; Clean frame 312 and be arranged on the cleaning frame underframe 311, clean frame underframe 311 and be provided with pulley.
Wherein, cleaning frame 312 specifically is to be made of two cleaning frame fixed mounts 313 and five groups of fixed frames; Each cleans frame fixed mount 313 two ends and is equipped with the portion of clamping, and five groups of fixed frames are installed on two cleaning frame fixed mounts 313 and clamp in the screens of portion, are equipped with the station of plug-in mounting circuit board on each fixed frame.Five groups of fixed mounts can move around, and can adapt to the placement of all size circuit board, and circuit board is placed on the station that clamps circuit board between per two groups of fixed mounts.
Clean frame 312 and be placed on and clean on the frame underframe 311, clean and be provided with pulley below the frame underframe 311.In the reality, clean frame underframe 311 and be specially netted frame structure, be divided into upper and lower two parts, after two parts cleaning frame underframe closes up, form in it space of cleaning frame 312 is set, clean and to be provided with pulley below the following underframe of frame underframe 311, by pulley can make whole cleaning frame assembly 301 main frame cavity 19 in slideway 1 and slideway 2 310 on slip.
The cleaning frame assembly of this structure can solve existing cleaning machine and once clean problems such as printed circuit board (PCB) quantity waste resource very few and that thereupon produce and energy consumption are big, cleaning mount structure in the existing cleaning machine is simple and easy, it is few to place printed circuit board (PCB) instability and quantity, circuit board easily slides and damages integrated circuit board or device in the washing process, and frame structure is unadjustable, and the integrated circuit board element height is limit.And the cleaning frame in the embodiment of the invention has adopted assembly type framework combining form, can regulate the distance of washing between integrated circuit board according to the height of device on the integrated circuit board, has made full use of the useful space in the main frame cavity.This cleaning frame can divide two-layer placement up and down when being applied in the main frame cavity of purging system, can be placed on the pulley track in the main frame cavity cleaning the frame underframe, conveniently to pick and place (can referring to Figure 10).In the reality, can a plurality of stations be set at cleaning frame assembly and reach the printed circuit board (PCB)s that clean of placing more, can once place 264 little printed circuit board (PCB)s at most, and the cleaning frame assembly on upper strata can be taken out, only clean the frame assembly with lower floor for the big printed circuit board (PCB) of area.This cleaning frame has simple in structure, can place a plurality of printed circuit board (PCB)s to be cleaned simultaneously, and easy to use.
On the basis of above-mentioned purging system, can also in the main frame cavity of this purging system, temp probe be set, optoelectronic switch, near switch etc., be electrically connected with the master control system of cleaning machine, whether can conveniently detect the temperature in the main frame cavity, whether detect has water and spray arm to rotate etc. in the main frame cavity.
When above-mentioned purging system is worked, at first former water is handled the generation deionized water by the prime water treatment system.The principle that deionized water is handled is: can produce required pure water after the sterilization of the coarse filtration of the absorption of former water by active carbon, PP cotton, the secondary filter of reverse osmosis, uviol lamp, the ion-exchange of resin.The effect that mixes resin in the bed is except that removing H in anhydrating
+All cation (Ca beyond the ion
+, Mg
+, Na
+) and remove OH
-Various anion (the SO that ion is outer
4 2-, Cl
-, HCO
3 -, HSiO
3 -), at last H is being arranged
+And OH
-Be combined into H
2O; At last the deionized water that obtains is stored in the deionized water water butt.Utilize this deionized water in the process of cleaning circuit plate, because the pure water intermediate ion is less, therefore reduce the chemistry and the physical action of water intermediate ion and circuit board, can make the attachment on the circuit board minimum, the insulating properties of circuit board meets the requirements, and the electric property of circuit board obtains maximum guarantee to satisfy the requirement that the client uses;
Concrete cleaning process is: by water-delivery pump the deionized water in the deionized water water butt is incorporated in the resin container (the smart resin bed that mixes) and further carries out purified treatment, purify waste water to enter in the main frame cavity and (enter the main frame cavity bottom, the printed circuit board (PCB) that is cleaned be arranged in the main frame cavity in, top), the water yield of introducing during each the cleaning only is 5L, circulating pump by purging system will enter purifying waste water of main frame cavity bottom and introduce in the heater (can be tubular heater) and heat, charging absorption pump (is provided with two charging absorption pumps and can sucks two kinds of cleaning agents simultaneously when necessarily being provided with when coolant-temperature gage in the cavity reaches, also can have only a charging absorption pump job to suck a kind of cleaning agent) open cleaning agent by in the pipeline suction main frame cavity, add and be split into upper, middle and lower three tunnel by pipeline after hot water mixes with cleaning agent, every road all goes out water-jet by the rotary spray arm that is arranged in the main frame cavity, be ejected into main frame cavity internal fixation on the printed circuit board (PCB) that cleans on the frame, printed circuit board (PCB) is cleaned.Temperature in the temp probe The real time measure main frame cavity that in this process, is provided with by the main frame inside cavity, thus the water temperature of cleaning can be controlled by the heating-up temperature of regulating heater; After cleaning was finished, charging absorption pump quit work, and sewage is discharged, introduce new purifying waste water once more and carry out rinsing, at this moment, the sewage that produces in the rinse cycle is discharged the main frame cavity, follow procedure is gone up water again and is carried out rinsing afterwards, and rinse cycle can repeat (can realize by the program setting).The clean-up performance of draining is detected in the intact back of rinsing, can not enter purging system once more and cleans if reach specified standard, cleans up fully until printed circuit board (PCB).
In the above-mentioned purging system, the charging aperture 308 of the main frame cavity that links to each other with the charging absorption pump feed end is arranged on the lower end (referring to Figure 11) of cleaning machine, and adopt the feed pipe 315 (referring to Figure 12) of elbow shape, the feed pipe of this structure makes cleaning agent directly inject deionized water in the main frame cavity of cleaning machine, cleans after mixing with deionized water in the cleaning chambers again.Avoided this charging aperture is arranged on cleaning machine top and adopts the straight pipe type feed pipe, make cleaning agent easily after charging absorption pump sucks, the main frame inside cavity direct projection that directly enters cleaning machine to printed circuit board (PCB) and earlier with cleaning chambers in deionized water clean again after mixing, cause and clean inhomogeneous, cleaning agent attached to the first-class problem of printed circuit board (PCB).
As shown in figure 13, the drying system in the above-mentioned printed circuit board cleaning machine specifically comprises: blower fan 13 (comprising the blower fan drive plate), filter 12, calandria assembly 405, pipeline and temperature control equipment; Wherein, the air inlet of blower fan 13 is connected with filter 12, and the air outlet of blower fan 13 is connected with calandria assembly 405 through pipeline, and the air inlet 306 on the main frame cavity 19 of the air outlet of calandria assembly 405 and purging system is connected; The control end of temperature control equipment is electrically connected with calandria assembly 405, is used for controlling the calandria assembly according to the temperature of the air outlet of the calandria assembly that detects.
In this drying system, also be provided with actuator 401 and vacuum butterfly valve 14; Wherein, actuator 401 is connected with vacuum butterfly valve 14, and the control end of actuator 401 is electrically connected with master control system, and vacuum butterfly valve 14 is arranged on the air outlet and the pipeline between the calandria assembly 405 of blower fan 13.Just can control opening or closing of vacuum butterfly valve 14 by control actuator 401 like this, reach the purpose of opening and closing of the pipeline between control blower fan and the calandria assembly, prevent that this cleaning machine is in cleaning circuit plate process, steam in the main frame cavity is back in the drying system, makes the parts damages or the reduction of service life of drying system.
Condensing unit 20 and air outlet assembly 402 can also be set in above-mentioned drying system, the air outlet 307 of the air inlet that makes this condensing unit 20 on the main frame cavity 19 of air outlet assembly 402 and purging system is connected, and the air outlet of this condensing unit 20 returns the air inlet that is connected to blower fan 13 through pipeline.Thereby the cleaning chambers that makes this drying system and purging system is connected to form the drying system of a circulation.
In the reality, temperature control equipment comprises temperature control and temperature survey two parts, form by temperature detect switch (TDS) 403 and temperature probe 404, the temperature control part branch is electrically connected with the control end of calandria assembly, can be according to the control signal of receiving, close the calandria assembly, be used to prevent that temperature is too high to be burnt out the calandria assembly owing to superheated causes; And temperature survey also is divided into two parts, and first thermometric detection part is arranged in the air outlet of calandria assembly, is used to detect the temperature of main frame cavity air inlet, can determine the working temperature of drying system; Second thermometric detection part is arranged in the main frame cavity air outlet, is used to detect the temperature of main frame cavity air outlet, and when utilizing this air-out to reflux with box lunch, the temperature of the wind of can determining to reflux is convenient to master control system follow-up bake out temperature is set.
In the above-mentioned drying system, blower fan is controlled by the blower fan drive plate; Temperature control equipment comprises by temperature probe to be measured real time temperature (comprising the oven dry gas of the main frame cavity that enters purging system and the gas temperature of the air outlet of cleaning chambers) and controls maximum temperature (the temperature detect switch (TDS) effect stops the work of calandria assembly when detecting maximum temperature) by temperature detect switch (TDS); When definite printed circuit board (PCB) rinsing is clean, start drying system, drying the calandria assembly this moment starts working, the vacuum butterfly valve of blower fan and actuator control is simultaneously opened, the filter core of outside air by filter enters volute of blower and enters the calandria assembly along pipeline and heat, enter in the main frame cavity of purging system through the wind of heating printed circuit board (PCB) is dried, air is by discharging with the air outlet of main frame cavity in the main frame cavity.If adopt the drying system of circulation, then the air outlet assembly that is connected by air outlet of the gas of discharging in the main frame cavity with the main frame cavity through row of conduits to condensing unit, the air of discharging after the condensing unit condensation is drawn back by blower fan and is mixed the back with the wind of outside suction to filter and use as follow-up heating, drying wind, reaches the effect of recycling oven dry wind.Temperature when this drying system can be dried by temperature control equipment control easily, long for avoiding drying time, cause unnecessary energy waste, can increase bake out temperature so that drying time shortens, thereby energy savings reduces unnecessary waste.
In the above-mentioned drying system; owing between the air outlet of blower fan and calandria assembly, set up actuator and vacuum butterfly valve; having reduced in the cleaning process steam rises and causes and to clean in the body humidity excessive by air inlet; by the switch of actuator control vacuum butterfly valve, when needs oven dry heating, open air intake, in cleaning process, close; fall and end in the cleaning process; moisture is back in the drying system, reduces the humidity of cleaning in the body greatly, thereby has realized the protection to blower fan and blower fan control board.
Waste Water Treatment in the above-mentioned printed circuit board cleaning machine specifically comprises: effluent filter and wastewater barrel; Effluent filter links to each other with wastewater barrel, and the discharge of wastewater mouth is set on the wastewater barrel.
The waste water that this Waste Water Treatment can produce cleaning process just enters wastewater barrel after entering effluent filter and filter by pipeline, enters sewer at last, has reduced cleaning machine to greatest extent and has discharged the pollution of waste water to environment.
Whether the water detection system that comprises in the above-mentioned printed circuit board cleaning machine, the deionized water that can generate the prime water treatment system up to standard the detection, and the water outlet of purging system is detected, and cleans up determining whether, two testing processes are specific as follows:
(1) when the prime water treatment system is handled, the prime water treatment system is gone out resistivity of water detect (specifically can show and detect the resistivity of water value) by the resistance counting rate meter that links to each other with the water detection system.Show that each filtration system of prime water treatment system is in failure state when detecting when resistivity value is lower than regulation numerical value, should change the filter core of each filtration system this moment.The water quality that filtration system produced that shows the prime water treatment system when the water outlet resistivity value is higher than regulation numerical value is satisfactory.
(2) in cleaning the printed circuit board (PCB) process, discharge the degree of purity (can show by the conductivity table that links to each other with the water detection system and detect the electrical conductivity of water value) of discharging waste water after the conductivity of waste water is determined to clean by detecting purging system, thereby determine whether printed circuit board (PCB) is cleaned up, during promptly owing to cleaning just, the printed circuit board (PCB) cleannes are poor, so the waste water quality that discharge previous cleaning several times back is relatively poor, the waste water quality of then discharging several times after cleaning is better, and therefore whether the waste water of discharging by the detection cleaning can detect and the stamp printed circuit board (PCB) be cleaned up.Specifically be to illustrate that water quality is relatively poor when certain conductivity value that cleans back discharge waste water is higher than setting, show that then the circuit board attachment that is cleaned is more, clean not exclusively, also will further clean when detecting.When the conductivity value that detects certain cleaning back discharge waste water was lower than setting, it was clean to represent that then printed circuit board (PCB) cleans, and then can finish clean.
In sum, printed circuit board cleaning machine in the embodiment of the invention, by master control system, prime water treatment system, purging system, drying system, Waste Water Treatment and water detection system are integrated in the cabinet, form incorporate complete machine structure, can directly insert light water be derived from moving generate deionized water to printed circuit board (PCB) clean, whole clean processes of rinsing, detection and oven dry, for the user brings convenience, especially can satisfy the demand of research and development institution or pcb board trial-production place to small-sized disposal ability.Have easy to operate, environmental protection and economy, wash the high and good advantage of cleaning performance of plate efficiency.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1. a printed circuit board cleaning machine is characterized in that, comprising:
Cabinet, master control system, prime water treatment system, purging system, drying system, Waste Water Treatment and water detection system;
Described each system all is arranged in the cabinet, and master control system is electrically connected with each system, controls each system's operation; Wherein, described prime water treatment system is provided with water inlet and delivery port, and the delivery port of prime water treatment system is connected with purging system, and the delivery port of purging system is connected with Waste Water Treatment;
Described drying system is connected with the air inlet of purging system;
Described water detection system, its test side are separately positioned on the water side of prime water treatment system and the water side of purging system, and the water outlet of prime water treatment system and purging system is detected.
2. printed circuit board cleaning machine according to claim 1 is characterized in that, described prime water treatment system comprises:
Coarse filtration device, reverse-osmosis filtering device, heating-ultraviolet lamp sterilizing unit and fine filtering apparatus;
The water side of described coarse filtration device is connected in turn with reverse-osmosis filtering device, heating-ultraviolet lamp sterilizing unit and fine filtering apparatus.
3. printed circuit board cleaning machine according to claim 2 is characterized in that, described reverse-osmosis filtering device comprises:
Booster pump, osmosis filtration membrane module and reverse osmosis water reflux;
The delivery port of described booster pump is communicated with the osmosis filtration membrane module by pipeline, the osmosis filtration membrane module is provided with filtered water outlet and refluxing opening, and the refluxing opening of described osmosis filtration membrane module by the road, the reverse osmosis water reflux returns the water inlet that is connected to booster pump.
4. printed circuit board cleaning machine according to claim 3, it is characterized in that, described reverse osmosis water reflux is formed by connecting by the road by backflow tank and return pressure control device, wherein, the water inlet of backflow tank is used to connect the refluxing opening of osmosis filtration membrane module, and the delivery port of return pressure control device is used to connect the water inlet of booster pump.
5. printed circuit board cleaning machine according to claim 1 is characterized in that, described purging system comprises:
Deionized water tank, water-delivery pump, smart resin bed, circulating pump, heater, charging absorption pump, main frame cavity, spray arm and the cleaning frame assembly of mixing;
The water side of described deionized water tank by the road, water-delivery pump is connected with the smart resin bed that mixes, smart water side of mixing resin bed by the road, circulating pump is connected with heater, the water side of heater by the road be arranged on the main frame cavity in spray arm be connected, be provided with the cleaning frame assembly of fixing circuit board in the main frame cavity, the main frame cavity is provided with waste water discharge opening, air inlet and air outlet;
The discharging opening of charging absorption pump is connected with the main frame cavity by the road.
6. printed circuit board cleaning machine according to claim 5 is characterized in that, described cleaning frame assembly comprises:
Clean frame and clean the frame underframe;
Described cleaning frame is the combined frame structure, cleans the frame fixed mount by both sides and connects how the group fixed frames constitute, and is equipped with the station of a plurality of plug-in mounting circuit boards on each fixed frame;
Clean frame and be arranged on the cleaning frame underframe, clean the frame underframe and be provided with pulley.
7. printed circuit board cleaning machine according to claim 5, it is characterized in that, described purging system also comprises: checkout gear, comprise: temp probe, optoelectronic switch and near switch, checkout gear is arranged in the described main frame cavity, whether be used for being electrically connected with the master control system of cleaning machine, detect the temperature in the main frame cavity, whether detect in the main frame cavity has water for cleaning and spray arm to rotate.
8. printed circuit board cleaning machine according to claim 1 is characterized in that, described drying system comprises: blower fan, filter, calandria assembly, pipeline and temperature control equipment;
The air inlet of described blower fan is connected with filter, and the air outlet of blower fan is connected with the calandria assembly through pipeline, and the air inlet on the main frame cavity of the air outlet of calandria assembly and purging system is connected; The control end of described temperature control equipment is connected with the calandria electrical component, is used for controlling the calandria assembly according to the temperature of the air outlet of the calandria assembly that detects.
9. printed circuit board cleaning machine according to claim 8 is characterized in that, described drying system also comprises:
Actuator and vacuum butterfly valve;
Described actuator is connected with vacuum butterfly valve, and the control end of actuator is electrically connected with described master control system, and described vacuum butterfly valve is arranged on the air outlet and the pipeline between the calandria assembly of described blower fan.
10. according to Claim 8 or 9 described printed circuit board cleaning machines, it is characterized in that described drying system also comprises:
Air outlet assembly and condensing unit, the air inlet of described air outlet assembly is connected with the air outlet of described purging system, and the air outlet of air outlet assembly links to each other with the air inlet of described condensing unit, and the condensing unit air outlet returns the air inlet that is connected to described blower fan through pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910085347XA CN101583246B (en) | 2009-05-21 | 2009-05-21 | Printed circuit board cleaning machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910085347XA CN101583246B (en) | 2009-05-21 | 2009-05-21 | Printed circuit board cleaning machine |
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| Publication Number | Publication Date |
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| CN101583246A CN101583246A (en) | 2009-11-18 |
| CN101583246B true CN101583246B (en) | 2011-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910085347XA Expired - Fee Related CN101583246B (en) | 2009-05-21 | 2009-05-21 | Printed circuit board cleaning machine |
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| CN (1) | CN101583246B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102202469B (en) * | 2010-03-22 | 2013-05-08 | 宏恒胜电子科技（淮安）有限公司 | Circuit board wet-processing system |
| CN102264192A (en) * | 2011-06-30 | 2011-11-30 | 深南电路有限公司 | Horizontal equipment and method for processing printed circuit board |
| CN102421248B (en) * | 2011-08-11 | 2013-11-27 | 廖启明 | Processing system and method in circuit board production |
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| CN108906730A (en) * | 2018-07-09 | 2018-11-30 | 马鞍山艾诚电子科技有限公司 | A kind of electronics technology exploitation PCB circuit board cleaner |
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2009
- 2009-05-21 CN CN200910085347XA patent/CN101583246B/en not_active Expired - Fee Related
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|---|---|
| CN101583246A (en) | 2009-11-18 |
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