CN110527991A - EN liquid medicine adds system automatically - Google Patents
EN liquid medicine adds system automatically Download PDFInfo
- Publication number
- CN110527991A CN110527991A CN201910911248.6A CN201910911248A CN110527991A CN 110527991 A CN110527991 A CN 110527991A CN 201910911248 A CN201910911248 A CN 201910911248A CN 110527991 A CN110527991 A CN 110527991A
- Authority
- CN
- China
- Prior art keywords
- hopper
- liquid level
- pump
- pipeline
- level controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 94
- 239000003814 drug Substances 0.000 title claims abstract description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 87
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 43
- 239000012530 fluid Substances 0.000 claims abstract description 32
- 238000001514 detection method Methods 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000001802 infusion Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 description 8
- 238000007747 plating Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 101100520231 Caenorhabditis elegans plc-3 gene Proteins 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001453 nickel ion Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000001755 vocal effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
- C23C18/1675—Process conditions
- C23C18/1683—Control of electrolyte composition, e.g. measurement, adjustment
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
- C23C18/34—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
EN liquid medicine of the invention adds system automatically, including liquid reserve tank, hopper and PLC controller, liquid reserve tank is fixedly connected with fluid filling pump by pipeline, the water outlet of fluid filling pump is connected to by pipeline with hopper, valve is fixedly connected with by pipeline on hopper, valve is fixedly connected with nickel slot by pipeline, nickel slot is fixedly connected with detection pump by pipeline, the control structure for the start-up and shut-down control to fluid filling pump is equipped in hopper, fluid filling pump, control structure, valve and detection pump are electrically connected with PLC controller.It can be by fluid filling pump to nickel slot quantitative liquid replenishing, and can be sampled automatically to the nickel solution of fluid infusion by detection pump.
Description
Technical field
The present invention relates to nickel plating production equipment fields, and in particular to EN liquid medicine adds system automatically.
Background technique
Nickel plating solution is that the nickel ion reduction in solution is deposited on the body surface with catalytic activity with reducing agent.
So far, the history of existing more than 50 years of the development of chemical nickel plating.Due to chemical Ni-plating layer have outstanding uniformity, hardness,
The comprehensive physicals chemical property such as wear resisting and corrosion resistance, this technology have been used widely, and chemical stability is high, coating combines
Power is good.In an atmosphere and in other media, the chemical stability of chemical Ni-plating layer is higher than the chemical stability of electroless nickel layer.
In existing production process, the control of nickel concentration is artificial sampling analysis in nickel plating bath, method particularly includes: In
Nickel solution is taken out in nickel plating bath, based on nickel solution precipitation reaction, chromogenic reaction, passes through the amount of chemical equilibrium equation formula
Change relationship is calculated the nickel concentration of sampling and is added in a manner of artificial supplementation after control technique concentration calculation needs increment.
The problems such as nickel solution water clock, seriously affects nickel solution when the manual analysis waste of manpower of high frequency time and artificial fluid infusion
Detection and use.
Summary of the invention
In order to overcome the shortcomings in the prior art, the present invention proposes that EN liquid medicine adds system automatically, and the present invention proposes EN medicine
Water adds system, energy quantitative liquid replenishing automatically, and can sample automatically to the nickel solution of fluid infusion.
To achieve the goals above, EN liquid medicine of the invention adds system, including liquid reserve tank, hopper and PLC control automatically
Device processed, liquid reserve tank are fixedly connected with fluid filling pump by pipeline, and the water outlet of fluid filling pump is connected to by pipeline with hopper, hopper
Upper to be fixedly connected with valve by pipeline, valve is fixedly connected with nickel slot by pipeline, and nickel slot is fixedly connected with inspection by pipeline
Pump is surveyed, the control structure for the start-up and shut-down control to fluid filling pump, fluid filling pump, control structure, valve and inspection are equipped in hopper
Pump is surveyed to be electrically connected with PLC controller.
Further, control structure includes a high liquid level controller and a low liquid level controller, high liquid level controller
It is electrically connected with PLC controller with low liquid level controller, the negative loop of high liquid level controller and low liquid level controller is in parallel
And in hopper, the height of high liquid level controller is higher than the height of low liquid level controller.
Further, detection pump is connected with beaker by pipeline, and PLC controller is electrically connected with for molten to nickel in beaker
The color detector of liquid detection.
Further, flow controller, flow controller and PLC controller electricity are fixedly connected between beaker and detection pump
Property connection, between flow controller and beaker be equipped with check valve.
Further, check valve includes tube body, and inlet is equipped in tube body, the work for blocking inlet is equipped in tube body
Plug member, piston piece hollow setting are provided with conducting orifice on piston piece, the bullet for pushing piston piece mobile are equipped in tube body
Spring, the stop collar for limiting to spring position is equipped in tube body, and stop collar is equipped with liquid outlet.
Further, the outside both ends of tube body are respectively equipped with one section of thread section, and the both ends of tube body are respectively equipped with detection pipe,
Detection pipe is connect with the outside screw of tube body.
Further, graduation mark has been placed equidistant on the outside of hopper.
Further, the inner wall inlay card of inlet has sealing ring.
The utility model has the advantages that 1, be equipped with fluid filling pump and detection pump, the liquid feeding of nickel slot and out liquid pass through fluid filling pump and detection pump
It completes, reduces manpower consumption；
2, it is equipped with control structure and PLC controller, the movement of fluid filling pump is controlled, guarantees the liquid volume added phase of nickel slot
Together.
Detailed description of the invention
With reference to the accompanying drawing the present invention is made further to describe and illustrate.
Fig. 1 is the structural schematic diagram of the present embodiment entirety；
Fig. 2 is the cross-sectional view of check valve.
Appended drawing reference: 1, liquid reserve tank；2, hopper；3, PLC controller；4, fluid filling pump；5, valve；6, nickel slot；7, it detects
Pump；8, high liquid level controller；9, low liquid level controller；10, negative loop；11, beaker；12, color detector；13, flow control
Device processed；14, check valve；141, tube body；142, inlet；143, piston piece；144, conducting orifice；145, spring；146, stop collar；
147, liquid outlet；148, thread section；15, detection pipe；16, graduation mark；17, sealing ring.
Specific embodiment
Below in conjunction with attached drawing, pass through the description to the preferred embodiment of the present invention, more clearly and completely elaboration
The technical solution of invention.
Embodiment: as shown in Figure 1, EN liquid medicine adds system, including a liquid reserve tank 1, nickel slot 6,2 and of hopper automatically
PLC controller 3.A fluid filling pump 4 is fixedly connected on reservoir, the both ends of fluid filling pump 4 pass through pipeline respectively and are fixedly connected simultaneously
Connection is in liquid reserve tank 1 and hopper 2, and fluid filling pump 4 and PLC controller 3 are electrically connected, and fluid filling pump 4 is molten by the nickel in liquid reserve tank 1
Liquid is pumped into hopper 2.
A high liquid level controller 8 and a low liquid level controller 9, the position of high liquid level controller 8 are equipped in hopper 2
Height than low liquid level controller 9 is high.It is controlled with PLC in the positive and negative electrode circuit 10 of high liquid level controller 8 and low liquid level controller 9
Device 3 processed is electrically connected by conducting wire.It is equipped with valve 5 in the bottom of hopper 2, which can open and close the drain of hopper 2,
Valve 5 is connected to by pipeline with nickel slot 6, and valve 5 and PLC controller 3 are electrically connected.High liquid level controller 8 and low liquid level control
Device 9 can use model WRT-136SX fluid level controller without model requirement.
PLC controller 3 control 2 liquid in-out of hopper process are as follows: 1, operator by 3 active of PLC controller to liquid feeding
4 input " liquid feeding " instruction of pump, fluid filling pump 4 works and is added to nickel solution in hopper 2 from liquid reserve tank 1, while valve 5 is beaten
It opens, the liquid in hopper 2 is flowed into nickel slot 6, and low liquid level controller 9 is powered due to liquid level raising in hopper 2, due to
The water inlet of fluid filling pump 4 is greater than the water outlet of valve 5, so the liquid level in hopper 2 gradually rises.
In hopper 2 liquid level rise and when liquid level touches high liquid level controller 8, high liquid level controller 8 be powered, high liquid level
Controller 8 controls fluid filling pump 4 by PLC controller 3 and stops working, and with the continuous leakage of valve 5, high liquid level controller 8 is powered off,
Liquid level in hopper 2 reduces；
2, liquid level in hopper 2 reaches the bottom end of low liquid level controller 9, and low liquid level control in hopper 2 is led
When line bottom end does not go out liquid surface in hopper 2 just, low liquid level controller 9 is powered off, and low liquid level controller 9 is controlled by PLC
3 control valve 5 of device is closed, and the liquid feeding process of nickel slot 6 terminates.
3, operator repeats " liquid feeding " instruction, the liquid feeding again of fluid filling pump 4.
Table 1
Aforementioned low liquid level controller 9, high liquid level controller 8, the action state of fluid filling pump 4 and valve 5 are as shown in table 1.
It is equipped with graduation mark 16 in the outer wall of hopper 2, operator can be by adjusting high liquid level controller 8 and low liquid level control
The height of device 9 processed, to achieve the purpose that control 4 actuation time of fluid filling pump.That is, high liquid level controller 8 moves down one
When a 16 height of graduation mark, liquid level can touch high liquid level controller 8 in advance in hopper 5, and high liquid level controller 8 will shift to an earlier date one
A graduation mark 16 closes fluid filling pump 4.
Detection pump 7 is fixedly connected in nickel slot 6, the nickel solution in nickel slot 6 is extracted out and detected from nickel slot 6, examined by detection pump 7
The water outlet for surveying pump 7 passes sequentially through pipeline and is connected with flow controller 13, check valve 14, and detection pump 7 is controlled by conducting wire and PLC
Device 3 is electrically connected, and beaker 11 is placed at the end pipeline of check valve 14, beaker 11 is for holding from nickel slot 6 by detection pump 7
The nickel solution of extraction.It is placed with color inspection side device 12 in the outside of beaker 11, color, which examines side device 12, can use the color of SC-10
It examines side device 12, color detector 12 and PLC controller 3 to be electrically connected by conducting wire, color detector 12 is to the nickel in beaker 11
Solution carries out color analysis, and the nickel solution color of the color of nickel solution and its internal standard that color detector 12 will test
Table compares, and then comparing result is sent to PLC controller 3 by color detector 12, and PLC controller is according to your color contrast knot
Fruit shows the concentration quality conditions of nickel solution in nickel slot 6.
As shown in Fig. 2, it includes tube body 141 that aforementioned check valve 14, which includes, inlet 142, tube body 141 are equipped in tube body 141
In be equipped with piston piece 143 for blocking inlet 142, piston piece 143 is opposite to be slidably arranged in tube body 1, in tube body 141
Equipped with the spring 145 being equipped with for pushing piston piece 143 mobile, the hollow setting of piston piece 143 is provided on piston piece 143 and leads
Port 144, conducting orifice 144 are connected to the boring position of piston piece 143, are equipped in tube body 141 for 145 position of spring
The stop collar 146 of limit, the both ends of spring 145 are contradicted with piston piece 143 and stop collar 146 respectively, and stop collar 146 is equipped with
Liquid outlet 147.Inlay card has a circle sealing ring 17 on the peripheral wall of inlet 142, when check valve 14 is closed, the end of piston piece 143
Portion is interspersed in the inner ring of sealing ring 17, realizes sealing by the gap that piston rod peripheral wall is filled up in the expansion of sealing ring 17.
In addition, being equipped with thread section 148 on the outside of the both ends end of tube body 141, the both ends of tube body 141 are equipped with for connecting
The detection pipe 15 of detection pump 7 and beaker 11, detection pipe 15 are threaded in the outside of tube body 141,148 convenience of thread section
The dismounting of check valve 14.
Only preferred embodiments of the present invention will be described for above-mentioned specific embodiment, and not to guarantor of the invention
Shield range is defined.Under the premise of not departing from design concept of the present invention and scope, those skilled in the art
Provided verbal description, attached drawing various modifications to made by technical solution of the present invention, substitution and improvement according to the present invention,
It should belong to protection category of the invention.Protection scope of the present invention is determined by claim.
Claims (8)
1.EN liquid medicine adds system, including liquid reserve tank (1), hopper (2) and PLC controller (3) automatically, which is characterized in that institute
It states liquid reserve tank (1) to be fixedly connected with fluid filling pump (4) by pipeline, the water outlet of the fluid filling pump (4) passes through pipeline and hopper
(2) it is connected to, is fixedly connected with valve (5) on the hopper (2) by pipeline, the valve (5) is fixedly connected by pipeline
Have nickel slot (6), the nickel slot (6) is fixedly connected with detection pump (7) by pipeline, is equipped in the hopper (2) for adding
The control structure of the start-up and shut-down control of liquid pump (4), the fluid filling pump (4), control structure, valve (5) and detection pump (7) with
PLC controller (3) is electrically connected.
2. EN liquid medicine according to claim 1 adds system automatically, which is characterized in that the control structure includes a height
Fluid level controller (8) and a low liquid level controller (9), the high liquid level controller (8) and low liquid level controller (9) with
PLC controller (3) is electrically connected, and the negative loop (10) of the high liquid level controller (8) and low liquid level controller (9) is in parallel simultaneously
In hopper (2), the height of the high liquid level controller (8) is higher than the height of low liquid level controller (9).
3. EN liquid medicine according to claim 1 adds system automatically, which is characterized in that the detection pump (7) passes through pipeline
It is connected with beaker (11), the PLC controller (3) is electrically connected with the color detection for detecting to nickel solution in beaker (11)
Device (12).
4. EN liquid medicine according to claim 3 adds system automatically, which is characterized in that the beaker (11) and detection pump
(7) it is fixedly connected between flow controller (13), the flow controller (13) and PLC controller (3) are electrically connected, described
Check valve (14) are equipped between flow controller (13) and beaker (11).
5. EN liquid medicine according to claim 4 adds system automatically, which is characterized in that the check valve (14) includes tube body
(141), inlet (142) are equipped in the tube body (141), be equipped in the tube body (141) for blocking inlet (142)
Piston piece (143), the piston piece (143) hollow setting are provided with conducting orifice (144), the pipe on the piston piece (143)
The spring (145) for pushing piston piece (143) mobile is equipped in body (141), be equipped in the tube body (141) for pair
The stop collar (146) of spring (145) position limit, the stop collar (146) are equipped with liquid outlet (147).
6. EN liquid medicine according to claim 5 adds system automatically, which is characterized in that the outside two of the tube body (141)
End is respectively equipped with one section of thread section (148), and the both ends of the tube body (141) are respectively equipped with detection pipe (15), the detection pipe
(15) it is connect with the outside screw of tube body (141).
7. EN liquid medicine according to claim 1 adds system automatically, which is characterized in that the outside etc. of the hopper (2)
Away from being provided with graduation mark (16).
8. EN liquid medicine according to claim 5 adds system automatically, which is characterized in that the inner wall of the inlet (142)
Inlay card has sealing ring (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910911248.6A CN110527991A (en) | 2019-09-25 | 2019-09-25 | EN liquid medicine adds system automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910911248.6A CN110527991A (en) | 2019-09-25 | 2019-09-25 | EN liquid medicine adds system automatically |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110527991A true CN110527991A (en) | 2019-12-03 |
Family
ID=68670136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910911248.6A Pending CN110527991A (en) | 2019-09-25 | 2019-09-25 | EN liquid medicine adds system automatically |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110527991A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114351221A (en) * | 2022-02-17 | 2022-04-15 | 四川英创力电子科技股份有限公司 | System and method for automatically and quantitatively adding liquid medicine for electroplating printed circuit board |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4699081A (en) * | 1986-08-25 | 1987-10-13 | Harshaw/Filtrol Partnership | Means for detecting and adjusting metal salt concentration in an electroless plating bath |
| JPH05179495A (en) * | 1991-12-28 | 1993-07-20 | Tdk Corp | Method for administrating nickel-iron plating bath |
| CN103899796A (en) * | 2012-12-31 | 2014-07-02 | 中钢集团衡阳重机有限公司 | One-way valve |
| CN204491022U (en) * | 2015-03-02 | 2015-07-22 | 昆山市华新电路板有限公司 | Electroplate liquid adds Controlling System automatically |
| CN110106497A (en) * | 2019-06-19 | 2019-08-09 | 宁波中科纬诚新材料科技有限公司 | Chemical plating automatic liquid supply method |
| CN210856334U (en) * | 2019-09-25 | 2020-06-26 | 苏州市格范五金塑胶工业有限公司 | EN liquid medicine automatic replenishing system |
-
2019
- 2019-09-25 CN CN201910911248.6A patent/CN110527991A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4699081A (en) * | 1986-08-25 | 1987-10-13 | Harshaw/Filtrol Partnership | Means for detecting and adjusting metal salt concentration in an electroless plating bath |
| JPH05179495A (en) * | 1991-12-28 | 1993-07-20 | Tdk Corp | Method for administrating nickel-iron plating bath |
| CN103899796A (en) * | 2012-12-31 | 2014-07-02 | 中钢集团衡阳重机有限公司 | One-way valve |
| CN204491022U (en) * | 2015-03-02 | 2015-07-22 | 昆山市华新电路板有限公司 | Electroplate liquid adds Controlling System automatically |
| CN110106497A (en) * | 2019-06-19 | 2019-08-09 | 宁波中科纬诚新材料科技有限公司 | Chemical plating automatic liquid supply method |
| CN210856334U (en) * | 2019-09-25 | 2020-06-26 | 苏州市格范五金塑胶工业有限公司 | EN liquid medicine automatic replenishing system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114351221A (en) * | 2022-02-17 | 2022-04-15 | 四川英创力电子科技股份有限公司 | System and method for automatically and quantitatively adding liquid medicine for electroplating printed circuit board |
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