CN110035623B - High-efficiency energy-saving welding-prevention pre-baking oven - Google Patents

High-efficiency energy-saving welding-prevention pre-baking oven Download PDF

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CN110035623B
CN110035623B CN201910326289.9A CN201910326289A CN110035623B CN 110035623 B CN110035623 B CN 110035623B CN 201910326289 A CN201910326289 A CN 201910326289A CN 110035623 B CN110035623 B CN 110035623B
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plate
fixed
loading box
loading
box
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CN110035623A (en
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王连山
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Huai'an Techuang Technology Co ltd
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Huai'an Techuang Technology Co ltd
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/22Secondary treatment of printed circuits
    • H05K3/28Applying non-metallic protective coatings
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/11Treatments characterised by their effect, e.g. heating, cooling, roughening
    • H05K2203/1105Heating or thermal processing not related to soldering, firing, curing or laminating, e.g. for shaping the substrate or during finish plating

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The invention discloses an efficient energy-saving anti-welding pre-baking oven which comprises a first loading box, a second loading box, a controller, a box body and a box door hinged with the box body, wherein a motor base is fixed at a bottom plate, a motor is fixed at the motor base, a horizontal plate is also fixed in the box body, a central hole is formed in the horizontal plate and is fixedly connected with an outer ring of a first bearing, an inner ring of the first bearing is fixedly connected with a rotary drum, the rotary drum is provided with a rectangular blind hole, a rectangular movable column is arranged in the blind hole, a pressure sensor is fixed at the bottom end of the blind hole, a compression spring is arranged between the pressure sensor and the movable column, a rotary disc is fixed at the top end of the movable column, the first loading box can be placed on the rotary disc, a hook is arranged on the lower surface of the rotary disc and can be hung on the second loading box, and a lamp heating unit is arranged at a side plate. The baking oven has good baking effect and is more energy-saving.

Description

High-efficiency energy-saving welding-prevention pre-baking oven
Technical Field
The invention relates to the field of circuit board production, in particular to a high-efficiency energy-saving anti-welding pre-baking oven.
Background
The circuit board has the name: ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, PCB board, aluminum substrate, high frequency board, thick copper board, impedance board, PCB, ultra-thin circuit board, printed (copper etching technology) circuit board, etc. The circuit board enables the circuit to be miniaturized and visualized, and plays an important role in batch production of fixed circuits and optimization of electric appliance layout. The Circuit Board can be called as a Printed Circuit Board or a Printed Circuit Board, the English name of which is (Printed Circuit Board) PCB, (Flexible Printed Circuit Board) FPC Circuit Board (FPC Circuit Board is also called as Flexible Circuit Board) is a Flexible Printed Circuit Board which is made of polyimide or polyester film as a base material and has high reliability and excellent performance, the Circuit Board is widely used in various electrical equipment at present, the Circuit Board needs to be subjected to a solder mask pre-baking step in the production process, namely solder mask ink is pre-coated on solder mask parts which do not need to be attached on the Circuit Board, the solder mask ink needs to be baked after being coated, the surface of the solder mask ink is dried, the existing baking device for the solder mask ink of the Circuit Board has the advantages of complex structure, high manufacturing cost, large consumed electric quantity in the baking process and no adjustment according to the baked Circuit Board quantity, and in the using process, energy is not saved enough.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to overcome the defects of the prior art and provides an efficient energy-saving anti-welding pre-baking oven.
The technical scheme is as follows: a welding-proof pre-baking oven is characterized by comprising a first loading box, a second loading box, a controller, a box body and a box door hinged with the box body, wherein the box body is cylindrical and comprises a top plate, a bottom plate and a circular cylindrical side plate, an inlet and an outlet are formed in the side plate, the box door is used for sealing the inlet and the outlet, a motor base is fixed at the bottom plate, a motor is fixed at the motor base, a horizontal plate is fixed in the box body and fixedly connected with the side plate, a central hole is formed in the horizontal plate and fixedly connected with an outer ring of a first bearing, an inner ring of the first bearing is fixedly connected with a rotary drum, the rotary drum is provided with a rectangular blind hole, a rectangular movable column is arranged in the blind hole, a pressure sensor is fixed at the bottom end of the blind hole, and a compression spring is arranged between the pressure sensor and the movable column, a turntable is fixed at the top end of the movable column, a first loading box can be placed on the turntable, a hook is arranged on the lower surface of the turntable, a second loading box can be hung on the hook, and the first loading box and the second loading box can be used for loading circuit boards to be dried; the lamp heating unit is installed at the side plate, a driven gear is fixed at the rotary drum, and a driving gear meshed with the driven gear is fixed at a motor shaft of the motor.
Furthermore, a circular first anti-skid pad is fixed on the upper surface of the turntable; 4 first loading box placing positions are arranged above the rotary table; and 4 second loading box placing positions are arranged below the turntable, and each second loading box placing position is provided with more than 3 hooks. More than 3 hooks guarantee the stability of hanging.
The first loading box and the second loading box respectively comprise a fan-shaped bottom plate, a first side baffle, a second side plate, a first arc-shaped plate and a second arc-shaped plate, the first side baffle, the second side plate, the first arc-shaped plate and the second arc-shaped plate are all fixed with the fan-shaped bottom plate, the first side baffle, the second side plate, the first arc-shaped plate and the second arc-shaped plate are all provided with a plurality of air holes, the inner side of the first arc-shaped plate is provided with a plurality of strip-shaped first limiting partition plates, the inner side of the second arc-shaped plate is provided with a plurality of strip-shaped second limiting partition plates, the number of the first limiting partition plates is equal to the number of the second limiting partition plates, the plurality of first limiting partition plates are distributed at equal intervals, and the plurality of second limiting partition plates are distributed at equal intervals; the second loading box is also fixedly connected with a plurality of fixing rings matched with the hooks.
Furthermore, the plurality of lamp heating units are distributed in an upper ring and a lower ring; when the upper surface of the rotary disc bears 4 first loading boxes, the lower part of the rotary disc bears 4 second loading boxes, and all the first and second loading boxes are filled with circuit boards, the rotary disc is positioned between the upper circle of lamp heating units and the lower circle of lamp heating units.
Through setting up sectorial loading case to a plurality of loading cases are the annular and distribute, thereby make on the carousel distribute more evenly.
Furthermore, a cylindrical protrusion is fixed on the upper surface of the turntable, the cylindrical protrusion is fixed with an inner ring of the second bearing, a circular ring part is fixed on an outer ring of the second bearing, and the circular ring part is fixedly connected with a circular second anti-skid pad; the top plate of the box body is provided with a plurality of mounting grooves, the electromagnet parts are mounted at the mounting grooves, and the inner sides of the side plates of the box body are also connected with a circular iron plate through corrugated pipes; a controller for controlling all the lamp heating units to be turned on and the motor to be turned on during the drying operation, and for controlling all the electromagnet parts to be turned on when the measured value of the pressure sensor is greater than a set threshold value, and the iron plate is abutted against the top plate; when the measured value of the pressure sensor is less than or equal to the set threshold value, all electromagnet parts are closed.
Further, the outer diameter of the top end of the corrugated pipe is larger than that of the bottom end.
Therefore, when the circular iron plate falls, arc interference between the corrugated pipe and the lamp heater on the upper circle can not occur.
Further, the number of the lamp heating units in the upper circle is equal to that of the lamp heating units in the lower circle, and the number of the lamp heating units in the upper circle is larger than 4.
According to the volume of box, can select the warm quantity of suitable lamp to guarantee the effect of drying, and the warm quantity of lamp sets up rationally, is unlikely to power consumptive too big.
Has the advantages that: compared with the prior art, the baking oven has the following advantages:
1. in the use process, the carousel slowly rotates to air to in the box forms the disturbance, thereby makes the temperature in the box more even, and the being heated of every circuit board is more even, avoids can be close to the warm unit of lamp the circuit board heat higher, and keep away from the warm unit of lamp the lower inhomogeneous condition of temperature that leads to of circuit board heat.
2. The loading box can be arranged above and below the rotary table, and the height of the rotary table can be adjusted along with the weight of the loading box, so that the circuit board is close to the heating source (namely the lamp heating unit) as much as possible, and the baking efficiency is improved.
3. When only the loading box is hung below the rotary disc, the space in the box body can be actually reduced, so that the heat is prevented from leaking and being wasted, and more energy is saved.
Drawings
FIG. 1 is a schematic view of the turntable with loading bins loaded both above and below;
FIG. 2 is a schematic view of the loading compartment loaded below the turntable and empty above;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a schematic top view of the turntable;
fig. 5 is a schematic view of a first loading compartment.
Detailed Description
Reference numerals: 1, a box body; 1.2 a lamp heating unit; 1.2 an electromagnet part; 2, a motor; 2.1 driving gear; 2.2 a driven gear; 2.3 rotating the drum; 2.4 pressure sensors; 2.5 compressing the spring; 2.7 movable columns; 2.8 first bearing; 2.9 horizontal plate; 3, rotating the disc; 3.1 a first non-slip mat; 3.2 cylindrical protrusions; 3.3 a second bearing; 3.4 circular ring part; 3.5 a second non-slip mat; 4.1 round iron plate; 4.2 a corrugated tube; 5.1 a first loading compartment; 5.2 second loading box; 6.1 a first cambered surface plate; 6.2 a second cambered surface plate; 6.3 first side dams; 6.4 second side dams; 6.5 first limiting baffle; 6.6 second spacing baffle; 10 circuit board.
An efficient energy-saving anti-welding pre-baking oven is characterized by comprising a first loading box 5.1, a second loading box 5.2, a controller, a box body 1 and a box door hinged with the box body, wherein the box body 1 is cylindrical and comprises a top plate, a bottom plate and a circular cylindrical side plate, an inlet and an outlet are formed in the side plate, the box door is used for sealing the inlet and the outlet, a motor base is fixed at the bottom plate, a motor 2 is fixed at the motor base, a horizontal plate 2.9 is also fixed in the box body, the horizontal plate 2.9 is fixedly connected with the side plate, a central hole is formed in the horizontal plate 2.9 and fixedly connected with an outer ring of a first bearing 2.8, an inner ring of the first bearing 2.8 is fixedly connected with a rotary drum, the rotary drum 2.3 is provided with a rectangular blind hole, a rectangular movable column 2.7 is arranged in the blind hole, a pressure sensor 2.4 is fixed at the bottom end of the blind hole, a compression spring 2.5 is arranged between the pressure sensor 2.4 and the movable column 2.7, a rotary table 3 is fixed at the top end of the movable column 2.7, a first loading box 5.1 can be placed on the rotary table, a hook is arranged on the lower surface of the rotary table, a second loading box 5.2 can be hung on the hook, and the first loading box and the second loading box can be used for loading circuit boards to be dried; the lamp heating unit 1.1 is installed at the side plate, the driven gear 2.2 is fixed at the rotary drum, and the driving gear 2.1 meshed with the driven gear 2.2 is fixed at the motor shaft of the motor 2.
A circular first anti-skid pad 3.1 is fixed on the upper surface of the turntable 3; 4 first loading box placing positions are arranged above the rotary table; and 4 second loading box placing positions are arranged below the turntable, and each second loading box placing position is provided with more than 3 hooks. The first loading box and the second loading box respectively comprise a fan-shaped bottom plate, a first side baffle 6.3, a second side plate 6.4, a first arc-shaped plate 6.1 and a second arc-shaped plate 6.2, the first side baffle 6.3, the second side plate 6.4, the first arc-shaped plate 6.1 and the second arc-shaped plate 6.2 are fixed with the fan-shaped bottom plate, the first side baffle 6.3, the second side plate 6.4, the first arc-shaped plate 6.1 and the second arc-shaped plate 6.2 are respectively provided with a plurality of air holes, the inner side of the first arc-shaped plate 6.1 is provided with a plurality of strip-shaped first limiting partition plates 6.5, the inner side of the second arc-shaped plate 6.2 is provided with a plurality of strip-shaped second limiting partition plates 6.6, the number of the first limiting partition plates 6.5 is equal to the number of the second limiting partition plates 6.5, the plurality of first limiting partition plates 6.5 are distributed at equal intervals, and the plurality of second limiting partition plates are distributed at equal intervals; the second loading box is also fixedly connected with a plurality of fixing rings matched with the hooks. The plurality of lamp heating units are distributed in an upper circle and a lower circle; when 4 first loading boxes are loaded on the upper surface of the rotary table, 4 second loading boxes are loaded below the rotary table, and all the first and second loading boxes are filled with circuit boards, the rotary table is positioned between the upper circle of lamp heating units 1.1 and the lower circle of lamp heating units 1.1.
A cylindrical bulge 3.2 is further fixed on the upper surface of the turntable, the cylindrical bulge 3.2 is fixed with an inner ring of a second bearing 3.3, a circular ring part 3.4 is fixed on an outer ring of the second bearing 3.3, and the circular ring part 3.4 is fixedly connected with a circular second anti-skid pad 3.5; the top plate of the box body 1 is provided with a plurality of mounting grooves, electromagnet parts 1.2 are mounted at the mounting grooves, and the inner sides of the side plates of the box body are also connected with a circular iron plate 4.1 through corrugated pipes 4.2; a controller for controlling all the lamp heating units 1.1 to be turned on and the motor 2 to be turned on during the drying operation, and for controlling all the electromagnet parts 1.2 to be turned on when the measured value of the pressure sensor 2.4 is greater than a set threshold value, and at this time, the iron plate 4.1 is abutted against the top plate; when the measured value of the pressure sensor 2.4 is less than or equal to the set threshold value, all the electromagnet portions 1.2 are closed. The outer diameter of the top end of the bellows 4.2 is larger than the outer diameter of the bottom end. The number of the lamp heating units 1.1 in the upper circle is equal to that of the lamp heating units 1.1 in the lower circle, and the number of the lamp heating units is more than 4. The lower surface of the iron plate 4.1 and the outer side of the corrugated pipe 4.2 are coated with light reflecting coatings.
The baking oven has the characteristic of energy conservation, can automatically adjust the working state according to different baking requirements, as shown in figure 1, 4 loading boxes can be arranged above and below the turntable, as shown in figure 5, a plurality of circuit boards can be loaded in the first loading box and the second loading box, and adjacent circuit boards cannot be contacted, so that the circuit boards are prevented from being damaged on one hand, and the baking effect is better on the other hand. In the baking process, the motor drive turntable slowly rotates, so that the circuit boards in the first and second loading boxes are heated more uniformly, the baking effect is better, the rotation of the turntable can form slow circulation of air in the box body, and the temperature in the box body is more uniform. And as shown in fig. 1 and 2, when loading boxes are loaded above and below the turntable, the movable column is retracted in the rotary drum due to the heavier weight of the turntable, the measured value of the pressure sensor is larger at this time, the circular iron plate abuts against the bottom plate, the upper circle of the lamp heating units is aligned to the first loading box for baking the circuit boards in the first loading box, and the lower circle of the lamp heating units is aligned to the second loading box for baking the circuit boards in the second loading box. When only a small amount of circuit board need toast, as shown in fig. 2, be equipped with the circuit board below the carousel, the carousel is lighter this moment, a plurality of seconds load the case and are located between the warm unit of round lamp and the warm unit of round lamp below and above-mentioned, thereby the warm unit of lamp of two circles can both toast the circuit board, and circular iron plate whereabouts this moment, butt second slipmat, and circular iron plate and bellows all coat have reflection of light coating, thereby the space in the box has actually been dwindled, thereby make the heat waste reduce, the heat all is used for toasting to the circuit board, owing to set up the second bearing, the rotation of carousel can not influence circular circuit board, thereby toast more energy-conservation, high efficiency. In order to avoid the influence of air pressure, air holes can be formed in the iron plate, and the diameter of each air hole is very small, for example 1 mm. Therefore, when the circular iron plate moves, the influence of air pressure is avoided, and the heat conduction and the heat waste of the small air holes are avoided.
While the invention has been shown and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the following claims.

Claims (6)

1. An efficient energy-saving anti-welding pre-baking oven is characterized by comprising a first loading box, a second loading box, a controller, a box body and a box door hinged with the box body, wherein the box body is cylindrical and comprises a top plate, a bottom plate and a circular cylindrical side plate, an inlet and an outlet are formed in the side plate, the box door is used for sealing the inlet and the outlet, a motor base is fixed at the bottom plate, a motor is fixed at the motor base, a horizontal plate is fixed in the box body and fixedly connected with the side plate, a central hole is formed in the horizontal plate and fixedly connected with an outer ring of a first bearing, an inner ring of the first bearing is fixedly connected with a rotary drum, the rotary drum is provided with a rectangular blind hole, a rectangular movable column is arranged in the blind hole, a pressure sensor is fixed at the bottom end of the blind hole, and a compression spring is arranged between the pressure sensor and the movable column, a turntable is fixed at the top end of the movable column, a first loading box can be placed on the turntable, a hook is arranged on the lower surface of the turntable, a second loading box can be hung on the hook, and the first loading box and the second loading box can be used for loading circuit boards to be dried; the lamp heating unit is mounted on the side plate, a driven gear is fixed on the rotary drum, and a driving gear meshed with the driven gear is fixed on a motor shaft of the motor; a circular first anti-slip mat is fixed on the upper surface of the turntable; 4 first loading box placing positions are arranged above the rotary table; 4 second loading box placing positions are arranged below the rotary table, and each second loading box placing position is provided with more than 3 hooks; the first loading box and the second loading box respectively comprise a fan-shaped bottom plate, a first side baffle plate, a second side plate, a first arc-shaped plate and a second arc-shaped plate, the first side baffle plate, the second side plate, the first arc-shaped plate and the second arc-shaped plate are all fixed with the fan-shaped bottom plate, the first side baffle plate, the second side plate, the first arc-shaped plate and the second arc-shaped plate are all provided with a plurality of air holes, the inner side of the first arc-shaped plate is provided with a plurality of strip-shaped first limiting partition plates, the inner side of the second arc-shaped plate is provided with a plurality of strip-shaped second limiting partition plates, the number of the first limiting partition plates is equal to the number of the second limiting partition plates, the plurality of first limiting partition plates are distributed at equal intervals, and the plurality of second limiting partition plates are distributed at equal intervals; the second loading box is also fixedly connected with a plurality of fixing rings matched with the hooks.
2. The efficient energy-saving weld-prevention pre-baking oven according to claim 1, wherein the plurality of lamp heating units are distributed in an upper circle and a lower circle; when the upper surface of the rotary disc bears 4 first loading boxes, the lower part of the rotary disc bears 4 second loading boxes, and all the first and second loading boxes are filled with circuit boards, the rotary disc is positioned between the upper circle of lamp heating units and the lower circle of lamp heating units.
3. The efficient energy-saving anti-welding pre-baking oven according to claim 1, wherein a cylindrical protrusion is further fixed on the upper surface of the turntable, the cylindrical protrusion is fixed with the inner ring of the second bearing, a circular ring part is fixed on the outer ring of the second bearing, and the circular ring part is fixedly connected with a circular second anti-skid pad; the top plate of the box body is provided with a plurality of mounting grooves, the electromagnet parts are mounted at the mounting grooves, and the inner sides of the side plates of the box body are also connected with a circular iron plate through corrugated pipes; a controller for controlling all the lamp heating units to be turned on and the motor to be turned on during the drying operation, and for controlling all the electromagnet parts to be turned on when the measured value of the pressure sensor is greater than a set threshold value, and the iron plate is abutted against the top plate; when the measured value of the pressure sensor is less than or equal to the set threshold value, all electromagnet parts are closed.
4. The energy efficient weld-resistant prebake oven according to claim 3, wherein the bellows has a top end with an outer diameter larger than the bottom end.
5. The efficient energy-saving solder mask prebake oven of claim 1 wherein the number of lamp-warm units of the upper turn is equal to the number of lamp-warm units of the lower turn, each being greater than 4.
6. The efficient energy-saving weld-preventing pre-baking oven according to claim 3, wherein the lower surface of the iron plate and the outer side of the corrugated tube are coated with reflective coatings.
CN201910326289.9A 2019-04-23 2019-04-23 High-efficiency energy-saving welding-prevention pre-baking oven Active CN110035623B (en)

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CN110035623B true CN110035623B (en) 2021-11-26

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111770636B (en) * 2020-06-16 2023-08-22 江门崇达电路技术有限公司 Circuit board character baking method capable of saving electric energy

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1738648A2 (en) * 2005-06-29 2007-01-03 Werner & Pfleiderer Lebensmitteltechnik Sachsen GmbH Baking oven with multiple stages
CN204018167U (en) * 2014-01-20 2014-12-17 深圳市达克罗工业有限公司 A kind of special hoisting apparatus for baking of Dacroment metalwork
CN207201854U (en) * 2017-05-05 2018-04-10 信丰福昌发电子有限公司 Intelligent temperature control oven is used in a kind of pcb board manufacture
CN208413375U (en) * 2018-06-06 2019-01-22 江苏千家汇纺织机械有限公司 Automatic material receiving type high speed glass fiber weaving machine
CN208606540U (en) * 2018-08-06 2019-03-15 江西佳宇陶瓷有限公司 A kind of ceramic making drying box convenient for being fixed to ceramics

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1738648A2 (en) * 2005-06-29 2007-01-03 Werner & Pfleiderer Lebensmitteltechnik Sachsen GmbH Baking oven with multiple stages
CN204018167U (en) * 2014-01-20 2014-12-17 深圳市达克罗工业有限公司 A kind of special hoisting apparatus for baking of Dacroment metalwork
CN207201854U (en) * 2017-05-05 2018-04-10 信丰福昌发电子有限公司 Intelligent temperature control oven is used in a kind of pcb board manufacture
CN208413375U (en) * 2018-06-06 2019-01-22 江苏千家汇纺织机械有限公司 Automatic material receiving type high speed glass fiber weaving machine
CN208606540U (en) * 2018-08-06 2019-03-15 江西佳宇陶瓷有限公司 A kind of ceramic making drying box convenient for being fixed to ceramics

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