CN109405440A - A kind of printed circuit board baking equipment - Google Patents
A kind of printed circuit board baking equipment Download PDFInfo
- Publication number
- CN109405440A CN109405440A CN201811238482.9A CN201811238482A CN109405440A CN 109405440 A CN109405440 A CN 109405440A CN 201811238482 A CN201811238482 A CN 201811238482A CN 109405440 A CN109405440 A CN 109405440A
- Authority
- CN
- China
- Prior art keywords
- drying box
- circuit board
- chamber door
- pipeline
- relay
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
-
- 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
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
- F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the 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
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/08—Humidity
-
- 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
- F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
Abstract
The invention discloses a kind of printed circuit board baking equipment in printed-board technology field, including drying box, the front surface of the drying box is equipped with chamber door, the surface of pinching of the chamber door is equipped with control cabinet, the left side top of the drying box is connected with vacuum pump by pipeline, the left bottom of the drying box is connected with nitrogen heater by pipeline, the nitrogen heater is in the lower end of drying box, the present invention is extracted out the air in drying box by vacuum pump, recycle nitrogen heater heated nitrogen, nitrogen after heating is filled into drying box, heating, drying is carried out to circuit board by the nitrogen after heating, it effectively placed the secondary pollution of circuit board, the quality of production of circuit board is ensured, and vapor of the siltation in drying box is discharged by check-valves, the drying in drying box is effectively ensured, reduce drying Humidity in case effectively raises the drying effect and efficiency of circuit board.
Description
Technical field
The present invention relates to printed-board technology field, specially a kind of printed circuit board baking equipment.
Background technique
Printed circuit board, also known as printed circuit board are the suppliers of electronic component electrical connection.Its development is existing
More than 100 years history；Its design is mainly layout design；Major advantage using circuit board is to greatly reduce wiring and dress
The mistake matched improves the gentle productive labor rate of Automated water.Circuit board needs to dry when processing, and existing drying is set
Standby is that the air directly heated in drying box to carry out circuit board heating, drying, contains a large amount of impurity in air, right
During circuit board is dried, the impurity in air can generate pollution to circuit board, seriously affect the production matter of circuit board
Amount, and circuit board is during heating, drying, can deposit in drying box after the moisture evaporation on circuit board, can not be to evaporation after
Moisture exclude, vapor deposits has seriously affected the drying effect and efficiency of circuit board in drying box.
Summary of the invention
It is mentioned above in the background art to solve the purpose of the present invention is to provide a kind of printed circuit board baking equipment
Existing drying equipment is that the air directly heated in drying box to carry out circuit board heating, drying, containing a large amount of in air
Impurity, during drying to circuit board, impurity in air can generate pollution to circuit board, seriously affect circuit
The quality of production of plate, and circuit board can deposit in drying box after the moisture evaporation on circuit board during heating, drying, nothing
Method excludes the moisture after evaporation, and vapor siltation has seriously affected the drying effect of circuit board and asking for efficiency in drying box
Topic.
To achieve the above object, the invention provides the following technical scheme: a kind of printed circuit board baking equipment, including drying
Case, the front surface of the drying box are equipped with chamber door, and the surface of pinching of the chamber door is equipped with control cabinet, the left side of the drying box
Top is connected with vacuum pump by pipeline, and the left bottom of the drying box is connected with nitrogen heater, the nitrogen by pipeline
For hot-air heater in the lower end of drying box, the top right side of the nitrogen heater is plugged with admission line, and the admission line exists
Between nitrogen heater and drying box, the top of the drying box is connected with first check-valve, first non-return by pipeline
The right side of valve is connected with cooling cylinder by pipeline, and the cooling cylinder passes through pipe on the right side of the right side of drying box, the cooling cylinder
Road is connected with second check-valve, and the bottom of the check-valves is connected by the top of pipeline and admission line, the cooling cylinder
Bottom is by being connected with drawing liquid pump, placement plate that there are two the inner cavity transverse splicings of the drying box, behind the inner cavity of the drying box
Wall is equipped with baroceptor, and between two placement plates, the inner cavity right wall of the cooling cylinder is equipped with the baroceptor
Liquid level sensor, the inner cavity left side of the control cabinet are connected with receiving module, central processing unit and PLC control in turn from top to bottom
The inner cavity right side of device, the control cabinet is connected with the first relay and the second relay, and first relay is in the second relay
The upper end of device, the baroceptor and liquid level sensor pass through conducting wire and connect with receiving module, the receiving module it is defeated
The input terminal for the conducting wire and central processing unit that outlet passes through connects, and the central processing unit is connect by conducting wire with PLC controller,
The PLC controller is connect by conducting wire with the first relay and the second relay, and first relay is by conducting wire and very
Sky pump connection, second relay are connect by conducting wire with drawing liquid pump.
Preferably, the front surface of the drying box offers the mounting groove to match with chamber door, and chamber door passes through hinge
It is mounted in the mounting groove in drying box, and the contact surface of the outside surrounding of the inside surrounding and chamber door of mounting groove is equipped with sealing
Item.
Preferably, the front surface of the chamber door is equipped with handle by bolt.
Preferably, the inner cavity quadrangle of the control cabinet offers mounting hole, and the contact surface of chamber door and control cabinet with
The corresponding position of four mounting holes on control cabinet offers threaded hole, and passes through four on four bolt-through control cabinets
Control cabinet is fixed on chamber door by four threaded holes on mounting hole and chamber door.
Preferably, what the pipeline for the bottom for offering and being plugged on second check-valve at the top of the admission line matched
Jack, and the pipeline of the bottom of second check-valve is plugged in the jack at the top of admission line, and the top of admission line
Jack and the junction of pipeline of bottom of second check-valve fixation is sealed by sealant.
Compared with prior art, the beneficial effects of the present invention are: the present invention is taken out the air in drying box by vacuum pump
Out, nitrogen heater heated nitrogen is recycled, the nitrogen after heating is filled into drying box, by the nitrogen after heating to electricity
Road plate carries out heating, drying, effectively placed the secondary pollution of circuit board, has ensured the quality of production of circuit board, and passes through
Vapor of the siltation in drying box is discharged check-valves, has effectively ensured the drying in drying box, has reduced in drying box
Humidity effectively raises the drying effect and efficiency of circuit board.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is cross-sectional view of the present invention；
Fig. 3 is cooling cylinder cross-sectional view of the present invention；
Fig. 4 is control cabinet cross-sectional view of the present invention.
In figure: 1 drying box, 2 chamber doors, 3 control cabinets, 4 vacuum pumps, 5 nitrogen heaters, 6 admission lines, 7 first check-valves,
8 cooling cylinders, 9 second check-valves, 10 drawing liquid pumps, 11 placement plates, 12 baroceptors, 13 liquid level sensors, 14 receiving modules, 15
Central processing unit, 16PLC controller, 17 first relays, 18 second relays.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-4 is please referred to, the present invention provides a kind of technical solution: a kind of printed circuit board baking equipment, including drying box
1, the front surface of drying box 1 is equipped with chamber door 2, and the surface of pinching of chamber door 2 is equipped with control cabinet 3, and the left side top of drying box 1 passes through
Pipeline is connected with vacuum pump 4, the model BECKER-VT4.4 of vacuum pump 4, and the left bottom of drying box 1 is connected with by pipeline
Nitrogen heater 5, the model LJ60 of nitrogen heater 5, nitrogen heater are primarily used to required nitrogen from initial
Temperature is heated to required air themperature, reaches as high as 850 DEG C, nitrogen heater 5 is in the lower end of drying box 1, nitrogen heating
The top right side of device 5 is plugged with admission line 6, and admission line 6 is between nitrogen heater 5 and drying box 1, the top of drying box 1
Portion is connected with first check-valve 7 by pipeline, and the right side of first check-valve 7 is connected with cooling cylinder 8 by pipeline, and cooling cylinder 8 exists
The right side on the right side of drying box 1, cooling cylinder 8 is connected with second check-valve 9, first check-valve 7 and second check-valve 9 by pipeline
Model be H11W, the check-valves of different nominal pressures can be selected according to actual needs, the bottom of check-valves 9 passes through pipeline
It being connect with the top of admission line 6, the bottom of cooling cylinder 8 is by being connected with drawing liquid pump 10, the model JL-12 of drawing liquid pump 10,
There are two placement plates 11 for the inner cavity transverse splicing of drying box 1, and the top of two placement plates 11 is uniformly provided with through-hole, drying box 1
Inner cavity rear wall baroceptor 12, the model AST2000 of baroceptor 12 are installed, baroceptor 12 is put at two
It sets between plate 11, the inner cavity right wall of cooling cylinder 8 is equipped with liquid level sensor 13, the model PTS601S of liquid level sensor 13, control
It is connected with receiving module 14, central processing unit 15 and PLC controller 16 on the left of the inner cavity of case 3 processed in turn from top to bottom, receives mould
The model RFM210 of block 14, the model AMD-RYZEN-5-2400G of central processing unit 15, the model of PLC controller
The inner cavity right side of 212-1BH23-1XA0, control cabinet 3 are connected with the first relay 17 and the second relay 18, the first relay 17
It is G3NA-240B with the second relay 18, the first relay 17 is in the upper end of the second relay 18, baroceptor 12 and liquid
Level sensor 13 is connect by conducting wire with receiving module 14, the conducting wire and central processing unit that the output end of receiving module 14 passes through
15 input terminal connection, central processing unit 15 are connect by conducting wire with PLC controller 16, and PLC controller 16 passes through conducting wire and the
One relay 17 and the connection of the second relay 18, the first relay 17 are connect by conducting wire with vacuum pump 4, and the second relay 18 is logical
Conducting wire is crossed to connect with drawing liquid pump 10.
Wherein, the front surface of drying box 1 offers the mounting groove to match with chamber door 2, and chamber door 2 is installed by hinge
In the mounting groove in drying box 1, and the contact surface of the inside surrounding of mounting groove and the outside surrounding of chamber door 2 is equipped with sealing
The front surface of item, chamber door 2 is equipped with handle by bolt, and the inner cavity quadrangle of control cabinet 3 offers mounting hole, and chamber door 2
Position corresponding with four mounting holes on control cabinet 3 with the contact surface of control cabinet 3 offers threaded hole, and passes through four spiral shells
Control cabinet 3 is fixed on chamber door 2 by four threaded holes of the bolt on four mounting holes and chamber door 2 on control cabinet 3, air inlet pipe
The top in road 6 offers and is plugged on the jack that the pipeline of the bottom of second check-valve 9 matches, and second check-valve 9
The pipeline of bottom is plugged in the jack at the top of admission line 6, and the jack at the top of admission line 6 and second check-valve 9
The junction of pipeline of bottom fixation is sealed by sealant.
Working principle: the present invention is connect by conducting wire with supply network, in use, opening chamber door 2, circuit board is placed in
In placement plate 11, then chamber door 2 closed, starts vacuum pump 4, vacuum pump 4 extracts the air in drying box 1 out, so that drying box 1
Interior formation vacuum, baroceptor 12 detects the air pressure level in drying box 1, when the air pressure level in drying box 1 drops to vacuum
When state, signal is passed to receiving module 14 by baroceptor 12, and signal is passed to central processing unit 15 by receiving module 14,
Signal is passed to PLC controller 16 by central processing unit 15, and PLC controller 16 controls the starting of the first relay 17, the first relay
Device 17 disconnects the power supply of vacuum pump 4, and the power-off of vacuum pump 4 stops working, and starts nitrogen heater 5, admission line 6 inputs nitrogen
Into nitrogen heater 5, nitrogen heater 5 is pipelined in drying box 1 after heating nitrogen, in drying box 1 into
Row heating, drying is placed in the circuit board in drying box 1, and the moisture on circuit board is evaporated mixed with the nitrogen in drying box 1 afterwards
It closes, when the temperature in drying box 1 constantly increases, the raising that the air pressure in drying box 1 also dishonours, the air pressure in drying box 1
When intensity is greater than the nominal pressure of first check-valve 7, the nitrogen in drying box 1 carries the moisture being evaporated and passes through pipeline stream together
Into first check-valve 7, flowed in cooling cylinder 8 by first check-valve 7, nitrogen and the moisture being carried in cooling cylinder 8 into
Row condensation, so that the condensate moisture in nitrogen is at the bottom for being gathered in cooling cylinder 8 after liquid, so that moisture and nitrogen separation, nitrogen
Gas constantly deposits in cooling cylinder 8, so that the air pressure in cooling cylinder 8 is greater than the nominal pressure of second check-valve 9, works as cooling cylinder
When air pressure in 8 is greater than the nominal pressure of second check-valve 9, nitrogen is flowed in admission line 6 by second check-valve 9, is passed through
Admission line 6 is flowed in nitrogen heater 5 again and is heated, and sequentially forms circulation, effective to ensure doing in drying box 1
It is dry, the drying effect and efficiency of circuit board are improved, and effectively prevent circuit board and be contaminated with dust from the air, ensured
The quality of production of circuit board, liquid level sensor 13 detection of aggregation in cooling cylinder 8 are high in the water level of the intracavity bottom of cooling cylinder 8
Degree, when height of water level is more than upper limit value, signal is passed to receiving module 14 by liquid level sensor 13, and receiving module 14 is by signal
Pass to central processing unit 15, signal is passed to PLC controller 16 by central processing unit 15, the control of PLC controller 16 second after
Electric appliance 18 starts, and the second relay 18, which is powered, to be started, and electric current is transmitted on drawing liquid pump 10 by the second relay 18, drawing liquid pump 10
The water in cooling cylinder 8 is extracted in the starting that is powered, which out, to be emptied, and when the water level of the water in cooling cylinder 8 falls below lower limit value, liquid level is passed
Signal is passed to receiving module 14 by sensor 13, and signal is passed to central processing unit 15, central processing unit 15 by receiving module 14
Signal is passed into PLC controller 16, PLC controller 16 controls the second relay 18 and disconnects power supply, and the power-off of drawing liquid pump 10 stops
Work, can quickly and effectively clear up the water assembled in cooling cylinder 8.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of printed circuit board baking equipment, including drying box (1), it is characterised in that: the front surface of the drying box (1) is pacified
Equipped with chamber door (2), the surface of pinching of the chamber door (2) is equipped with control cabinet (3), and the left side top of the drying box (1) passes through pipe
Road is connected with vacuum pump (4), and the left bottom of the drying box (1) is connected with nitrogen heater (5), the nitrogen by pipeline
In the lower end of drying box (1), the top right side of the nitrogen heater (5) is plugged with admission line (6) heater (5), described
For admission line (6) between nitrogen heater (5) and drying box (1), the top of the drying box (1) is connected with by pipeline
The right side of one check-valves (7), the first check-valve (7) is connected with cooling cylinder (8) by pipeline, and the cooling cylinder (8) is being dried
The right side on the right side of dry case (1), the cooling cylinder (8) is connected with second check-valve (9) by pipeline, the check-valves (9)
Bottom is connect by pipeline with the top of admission line (6), the bottom of the cooling cylinder (8) by being connected with drawing liquid pump (10),
There are two placement plate (11), the inner cavity rear walls of the drying box (1) to be equipped with air pressure for the inner cavity transverse splicing of the drying box (1)
Sensor (12), the baroceptor (12) between two placement plates (11), install by the inner cavity right wall of the cooling cylinder (8)
Have liquid level sensor (13), is connected with receiving module (14), centre in turn from top to bottom on the left of the inner cavity of the control cabinet (3)
Device (15) and PLC controller (16) are managed, is connected with the first relay (17) and the second relay on the right side of the inner cavity of the control cabinet (3)
Device (18), first relay (17) is in the upper end of the second relay (18), the baroceptor (12) and level sensing
Device (13) is connect by conducting wire with receiving module (14), the conducting wire and centre that the output end of the receiving module (14) passes through
The input terminal connection of device (15) is managed, the central processing unit (15) is connect by conducting wire with PLC controller (16), the PLC control
Device (16) processed is connect by conducting wire with the first relay (17) and the second relay (18), and first relay (17) is by leading
Line is connect with vacuum pump (4), and second relay (18) is connect by conducting wire with drawing liquid pump (10).
2. a kind of printed circuit board baking equipment according to claim 1, it is characterised in that: before the drying box (1)
Surface offers the mounting groove to match with chamber door (2), and chamber door (2) is mounted on the installation on drying box (1) by hinge
In slot, and the contact surface of the inside surrounding of mounting groove and the outside surrounding of chamber door (2) is equipped with sealing strip.
3. a kind of printed circuit board baking equipment according to claim 1, it is characterised in that: the preceding table of the chamber door (2)
Face is equipped with handle by bolt.
4. a kind of printed circuit board baking equipment according to claim 1, it is characterised in that: the control cabinet (3) it is interior
Chamber quadrangle offers mounting hole, and the contact surface and four mounting holes on control cabinet (3) of chamber door (2) and control cabinet (3)
Corresponding position offers threaded hole, and by four mounting holes and chamber door (2) on four bolt-through control cabinets (3)
Four threaded holes control cabinet (3) is fixed on chamber door (2).
5. a kind of printed circuit board baking equipment according to claim 1, it is characterised in that: the admission line (6)
Top offers and is plugged on the jack that the pipeline of the bottom of second check-valve (9) matches, and the bottom of second check-valve (9)
The pipeline in portion is plugged in the jack at the top of admission line (6), and the jack and second check-valve at the top of admission line (6)
(9) junction of the pipeline of bottom is sealed fixation by sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811238482.9A CN109405440A (en) | 2018-10-23 | 2018-10-23 | A kind of printed circuit board baking equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811238482.9A CN109405440A (en) | 2018-10-23 | 2018-10-23 | A kind of printed circuit board baking equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109405440A true CN109405440A (en) | 2019-03-01 |
Family
ID=65469426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811238482.9A Pending CN109405440A (en) | 2018-10-23 | 2018-10-23 | A kind of printed circuit board baking equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109405440A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111947446A (en) * | 2020-08-21 | 2020-11-17 | 吉林农业大学 | Semiconductor oven nitrogen gas adjusting device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203454653U (en) * | 2013-09-06 | 2014-02-26 | 潍坊天泽新能源有限公司 | Pole piece drying box |
| CN106931726A (en) * | 2017-03-23 | 2017-07-07 | 河北工业大学 | A kind of baking drying process of lithium ion battery cell |
| CN206695516U (en) * | 2017-05-18 | 2017-12-01 | 河北工业大学 | A kind of vacuum dryer of lithium ion battery raw material |
| CN207132684U (en) * | 2017-08-22 | 2018-03-23 | 福建奇丰电子有限公司 | A kind of multilayer printed wiring board prints drying unit |
| CN207815836U (en) * | 2018-01-30 | 2018-09-04 | 新疆天宏基硅业有限公司 | Lithium battery drying device |
-
2018
- 2018-10-23 CN CN201811238482.9A patent/CN109405440A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203454653U (en) * | 2013-09-06 | 2014-02-26 | 潍坊天泽新能源有限公司 | Pole piece drying box |
| CN106931726A (en) * | 2017-03-23 | 2017-07-07 | 河北工业大学 | A kind of baking drying process of lithium ion battery cell |
| CN206695516U (en) * | 2017-05-18 | 2017-12-01 | 河北工业大学 | A kind of vacuum dryer of lithium ion battery raw material |
| CN207132684U (en) * | 2017-08-22 | 2018-03-23 | 福建奇丰电子有限公司 | A kind of multilayer printed wiring board prints drying unit |
| CN207815836U (en) * | 2018-01-30 | 2018-09-04 | 新疆天宏基硅业有限公司 | Lithium battery drying device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111947446A (en) * | 2020-08-21 | 2020-11-17 | 吉林农业大学 | Semiconductor oven nitrogen gas adjusting device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190301 |
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| RJ01 | Rejection of invention patent application after publication |