CN110958779B

CN110958779B - Baking device for PCB

Info

Publication number: CN110958779B
Application number: CN201911237695.4A
Authority: CN
Inventors: 汪天骄; 尤志刚; 蒋鹏程; 杜秋生; 宋丹
Original assignee: Anhui Heavenly Electronic Polytron Technologies Inc
Current assignee: Anhui Heavenly Electronic Polytron Technologies Inc
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2023-01-10
Anticipated expiration: 2039-12-06
Also published as: CN110958779A

Abstract

The invention discloses a baking device for a PCB (printed circuit board), which relates to the technical field of PCB processing and comprises a supporting plate, a supporting frame, a conveying component, a baking component and an exhaust gas treatment component, wherein the supporting plate is horizontally arranged at the top of the supporting frame, the conveying component is arranged above the supporting plate and comprises a servo motor, a transmission roller and a conveying belt, the conveying component is used for continuously conveying the PCB to be baked, the baking component is arranged above the conveying component and comprises a baking box, a separating disc and an infrared baking lamp, the baking component is used for continuously baking the PCB to be baked, the exhaust gas treatment component is arranged above the baking component and comprises a liquid sprinkling pipe, a three-way joint and an atomizing nozzle, and the exhaust gas treatment component is used for removing soldering tin exhaust gas and printing ink exhaust gas generated in the process of baking the PCB. The baking device for the PCB has the characteristics of simple structure, convenience in operation, low manufacturing cost, good waste gas removal and the like.

Description

Baking device for PCB

Technical Field

The invention relates to the technical field of PCB processing, in particular to a baking device for a PCB.

Background

When parts on a circuit board are generally embedded, the circuit board is subjected to solder mask treatment firstly, namely solder mask ink is coated on the parts, which do not need to be attached with soldering tin, on the circuit board in advance, and the circuit board coated with the solder mask ink needs to be baked, so that the surface of an oil film is dried. When the circuit board is baked, generally can produce soldering tin waste gas and printing ink waste gas, if the staff breathes these waste gases for a long time can cause not good influence to the health, and traditional baking uses the oven to bake, and the waste gas of inefficiency and production is difficult to discharge. The existing baking device for the solder mask ink of the circuit board has the defects of complex structure, high manufacturing cost and complex operation.

Therefore, it is desirable to provide a baking apparatus for a circuit board, which can remove waste solder and waste ink, and has a simple structure, a low manufacturing cost, and a simple operation.

Disclosure of Invention

The present invention is directed to a baking apparatus for a PCB to solve the above-mentioned problems of the prior art.

A baking device for a PCB comprises a supporting plate, a supporting frame, a conveying assembly, a baking assembly and an exhaust gas treatment assembly, wherein the supporting plate is horizontally arranged at the top of the supporting frame;

the conveying assembly is arranged above the supporting plate and comprises two L-shaped first mounting plates, the first mounting plates are symmetrically distributed front and back and are arranged on the upper end surface of the supporting plate in the left-right direction, a plurality of transmission rollers are uniformly distributed between the first mounting plates through bearings, a conveying belt is sleeved on all the transmission rollers, a first belt wheel is arranged at the rear end part of each transmission roller, a first belt wheel is sleeved on all the first belt wheels, a second belt wheel is arranged at the front end part of the rightmost transmission roller, the supporting frame is correspondingly provided with a second mounting plate below the rightmost transmission roller, a servo motor is arranged on the second mounting plate, a third belt wheel is arranged on an output shaft of the servo motor, and the second belt wheel is connected with the third belt wheel through the second belt;

the baking assembly is arranged above the conveying assembly and comprises a baking box with an opening at the lower part, the baking box is arranged above the conveying belt in the middle, the front side and the rear side of the baking box are respectively connected with the front mounting plate and the rear mounting plate through industrial hasps and industrial hinges, a separation disc is arranged in the middle of the baking box through screws, a left-right-oriented U-shaped mounting plate III is arranged in the middle of the lower end surface of the separation disc, lamp holders are uniformly distributed and fixed on the mounting plate III, and downward infrared baking lamps are arranged on the lamp holders;

the utility model discloses a flue gas treatment subassembly, including exhaust-gas treatment subassembly, flue gas treatment subassembly is including spilling the liquid pipe, spill the liquid pipe and locate the inside of toasting the case and be fixed in the top of toasting the case through the buckle of U type with controlling the orientation, it has three way connection to peg graft to spill the equipartition on the liquid pipe, three way connection's intermediate head is vertical down and has inserted the atomizer, the atomizer is used for the atomizing industry ethanol of blowout, the symmetry is equipped with two rows of exhaust gas mouths and has the exhaust pipe in the welding of exhaust gas mouth department around the bottom of separating the dish, the top of toasting the case is equipped with the gas vent between two parties and has the blast pipe in the welding of exhaust gas mouth department.

Preferably, the lower part of carriage is installed and is placed the board, place the stock solution bucket that is equipped with the industry ethanol on the board, the liquid outlet end of the bottom of stock solution bucket has the inlet of booster pump through rubber hose connection, the liquid outlet of booster pump passes through the feed pipe and is connected with the inlet liquor end that spills the liquid pipe, both ends are equipped with the leakage fluid dram and have the fluid-discharge tube in the welding of fluid-discharge dram department about the bottom of partition dish, the fluid-discharge tube passes through the inlet liquor end connection at the top of rubber hose and stock solution bucket.

Preferably, a fan is installed on the top of the exhaust pipe.

Preferably, the exhaust pipe can be connected with an external clean water tank through a rubber hose.

Preferably, the installation seats are symmetrically installed on the left side and the right side of the front side of the outer portion of the baking box, and a U-shaped lifting rod is installed between the left installation seat and the right installation seat.

Preferably, the lower part of the front side of the baking box is uniformly provided with a rectangular observation port, and a transparent glass plate is arranged at the observation port.

The invention has the advantages that: the baking device for the PCB board in the invention comprises the following components: the conveying belt is controllably driven to rotate by the servo motor, so that the circuit board to be baked is sent into the baking box rhythmically and the baked circuit board is sent out of the baking box rhythmically, and manual judgment and intervention are avoided; the high-efficiency balanced baking work of the circuit board to be baked is realized through a row of infrared baking lamps in the baking oven, so that the baking effect is consistent; solder waste gas and ink waste gas generated during baking are sucked above the separating disc through the two rows of exhaust fans in the baking oven, and atomized industrial ethanol is sprayed out through the one row of atomizing nozzles so as to absorb the solder waste gas and the ink waste gas in sufficient gas. The baking device for the PCB has the characteristics of simple structure, convenience in operation, low manufacturing cost, good waste gas removal and the like.

Drawings

Fig. 1 is a schematic diagram of the overall three-dimensional structure of the present invention.

Fig. 2 isbase:Sub>A schematic view ofbase:Sub>A-base:Sub>A section structure in fig. 1 (only the baking oven is cut away).

Fig. 3 is a schematic view of the cross-sectional structure B-B in fig. 1 (only the baking oven is cut away).

Fig. 4 is a schematic structural view of the separation disc of the present invention.

Wherein:

1-a support plate; 2-a support frame; 3, mounting a first plate; 4-driving rollers; 5, conveying a belt; 6-a first belt wheel; 7-a first belt; 8-belt wheel two; 9-mounting a second plate; 10-a servo motor; 11-belt wheel III; 12-belt II; 13-a baking oven; 14-industrial hasp; 15-industrial hinges; 16-a mounting seat; 17-lifting and placing the rod; 18-a viewing port; 19-a glass plate; 20-a divider disk; 21-mounting a plate III; 22-a lamp holder; 23-infrared baking lamps; 24-an exhaust port; 25-an exhaust pipe; 26-exhaust fan; 27-an exhaust port; 28-an exhaust pipe; 29-drain port; 30-a drain pipe; 31-a liquid sprinkling pipe; 32-buckling; 33-a three-way connection; 34-an atomizing spray head; 35-placing a plate; 36-a liquid storage barrel; 37-a booster pump; 38-supply tube.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 4, a baking device for a PCB board comprises a supporting plate 1, a supporting frame 2, a conveying assembly, a baking assembly and an exhaust gas treatment assembly, wherein the supporting plate 1 is horizontally installed on the top of the supporting frame 2;

the conveying assembly is arranged above the supporting plate 1 and comprises two L-shaped mounting plates I3, the mounting plates I3 are symmetrically distributed in the front and back direction and are arranged on the upper end face of the supporting plate 1 in the left-right direction, a plurality of driving rollers 4 are uniformly distributed between the two mounting plates I3 through bearings, a conveying belt 5 is sleeved on all the driving rollers 4, belt wheels I6 are arranged at the rear end parts of the driving rollers 4, belts I7 are sleeved on all the belt wheels I6, belt wheels II 8 are arranged at the front end parts of the driving rollers 4 on the rightmost side, the supporting frame 2 is correspondingly provided with mounting plates II 9 below the driving rollers 4 on the rightmost side, a servo motor 10 is arranged on the mounting plates II 9, belt wheels III 11 are arranged on an output shaft of the servo motor 10, and the belt wheels II 8 and the belt wheels III 11 are connected through belts II 12;

the baking assembly is arranged above the conveying assembly and comprises a baking box 13 with an opening at the lower part, the baking box 13 is arranged right above the conveying belt 5 in the middle, the front side and the rear side of the baking box 13 are respectively connected with a front mounting plate I and a rear mounting plate I3 through an industrial buckle 14 and an industrial hinge 15, a separation disc 20 is arranged in the middle of the inside of the baking box 13 through screws, a left-right-oriented U-shaped mounting plate III 21 is arranged in the middle of the lower end face of the separation disc 20, lamp holders 22 are uniformly distributed and fixed on the mounting plate III 21, and downward infrared baking lamps 23 are arranged on the lamp holders 22;

the top of toasting the subassembly is located to the exhaust-gas treatment subassembly, the exhaust-gas treatment subassembly is including spilling liquid pipe 31, spill liquid pipe 31 about with orientation locate toast the inside of case 13 and be fixed in toast the top of case 13 through the buckle 32 of U type, it has three way connection 33 to spill the equipartition grafting on the liquid pipe 31, three way connection 33's intermediate head is vertical down to the plug-in connection have atomizer 34, atomizer 34 is used for the atomizing industry ethanol of blowout, the symmetry is equipped with two rows of exhaust gas ports 24 and has exhaust pipe 25 in the welding of exhaust gas port 24 department around the bottom of separating dish 20, toast the top of case 13 and be equipped with gas vent 27 between two parties and have blast pipe 28 in gas vent 27 department welding.

In the invention, a placing plate 35 is installed on the lower part of the supporting frame 2, a liquid storage barrel 36 filled with industrial ethanol is placed on the placing plate 35, the liquid outlet end of the bottom of the liquid storage barrel 36 is connected with the liquid inlet of a booster pump 37 through a rubber hose, the liquid outlet of the booster pump 37 is connected with the liquid inlet end of a liquid scattering pipe 31 through a liquid supply pipe 38, the left end and the right end of the bottom of the separating disc 20 are provided with liquid outlet ports 29, liquid outlet pipes 30 are welded at the liquid outlet ports 29, and the liquid outlet pipes 30 are connected with the liquid inlet end of the top of the liquid storage barrel 36 through a rubber hose. Industrial ethanol in the liquid storage barrel 36 is pumped into the liquid supply pipe 38, the liquid scattering pipe 31 and the atomizing nozzle 34 through the booster pump 37, and the industrial ethanol is atomized by the atomizing nozzle 34 and then is sprayed above the separating disc 20 so as to be sufficiently contacted with soldering tin waste gas and printing ink waste gas generated during circuit board baking, and therefore waste gas can be better removed.

In the present invention, a discharge fan 26 is installed on the top of the exhaust duct 25. The exhaust fan 26 sucks the solder waste gas and the ink waste gas generated during the baking of the circuit board to the upper part of the separating tray 20 to prevent the solder waste gas and the ink waste gas from diffusing to the working environment and damaging the physical and mental health of the operators.

In the present invention, the exhaust pipe 28 may be connected to an external clean water tank through a rubber hose. The ethanol and water are miscible so as to remove the ethanol component from the vent gas.

In the invention, the installation seats 16 are symmetrically installed at the left and right sides of the front side of the outer part of the baking box 13, and a U-shaped lifting rod 17 is installed between the left installation seat and the right installation seat 16. The baking box 13 can be opened more conveniently by lifting the rod 17, and the equipment maintenance and repair are convenient.

In the present invention, a rectangular observation port 18 is uniformly distributed at the lower part of the front side of the baking oven 13, and a transparent glass plate 19 is installed at the observation port 18. The operator can directly observe the baking condition of the circuit board inside the baking chamber 13 through the transparent glass plate 19, so as to further optimize relevant parameters during baking.

In the invention, the working principle and the working process of the baking device for the PCB board are as follows:

the method comprises the steps of orderly placing circuit boards to be baked on the left side of a conveying belt 5, driving the conveying belt to rhythmically bake the circuit boards from the left side of the conveying belt 5 through a servo motor 10, conveying the circuit boards to the right side of the conveying belt 5 after passing through a baking box 13, completing baking work of ink on the circuit boards, sucking high-temperature soldering tin waste gas and printing ink waste gas generated in the baking process to the upper side of a separating disc 20 through an exhaust fan, pumping industrial ethanol in a liquid storage barrel 36 to a liquid supply pipe 38-a liquid spraying pipe 31-an atomizing nozzle 34 through a booster pump 37, atomizing the industrial ethanol by the atomizing nozzle 34, spraying the industrial ethanol to the upper side of the separating disc 20 to be fully contacted with the soldering tin waste gas and the printing ink waste gas, and further removing the waste gas, and removing the remaining gas mixed with the industrial ethanol from an exhaust pipe 28 through an external clean water tank connected through a rubber hose, so as to remove ethanol components in the exhaust gas.

In summary, the baking device for the PCB board in the present invention: the conveying belt is controllably driven to rotate by the servo motor, so that the circuit board to be baked is sent into the baking box rhythmically and the baked circuit board is sent out of the baking box rhythmically, and manual judgment and intervention are avoided; the high-efficiency balanced baking work of the circuit board to be baked is realized through a row of infrared baking lamps in the baking oven, so that the baking effect is consistent; solder waste gas and ink waste gas generated during baking are sucked above the separating disc through the two rows of exhaust fans in the baking oven, and atomized industrial ethanol is sprayed out through the one row of atomizing nozzles so as to absorb the solder waste gas and the ink waste gas in sufficient gas. The baking device for the PCB has the characteristics of simple structure, convenience in operation, low manufacturing cost, good waste gas removal and the like.

The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.

Claims

1. The utility model provides a baking equipment for PCB board, includes backup pad (1), carriage (2), delivery component, toasts subassembly and exhaust-gas treatment subassembly, backup pad (1) horizontal installation is at the top of carriage (2), its characterized in that:

the conveying assembly is arranged above the supporting plate (1), the conveying assembly comprises a first mounting plate (3) of two L types, the first mounting plate (3) is symmetrically distributed around and towards the left and right sides and is mounted on the upper end face of the supporting plate (1), a plurality of driving rollers (4) are mounted between the two first mounting plates (3) through bearing uniform distribution, a conveying belt (5) is sleeved on all the driving rollers (4), a first belt wheel (6) is mounted at the rear end of each driving roller (4), a first belt (7) is sleeved on all the first belt wheels (6), a second belt wheel (8) is mounted at the front end of the driving roller (4) on the rightmost side by means of the first bearing uniform distribution, a second mounting plate (9) is correspondingly mounted below the driving roller (4) on the rightmost side of the supporting frame (2), a servo motor (10) is mounted on the second mounting plate (9), a third belt wheel (11) is mounted on an output shaft of the servo motor (10), and the second belt wheel (8) and the third belt wheel (11) are connected through a second belt (12);

the baking assembly is arranged above the conveying assembly and comprises a baking box (13) with an opening in the lower portion, the baking box (13) is arranged above the conveying belt (5) in the middle, the front side and the rear side of the baking box (13) are connected with a front mounting plate I (3) and a rear mounting plate I (3) through industrial hasps (14) and industrial hinges (15) respectively, a separation disc (20) is mounted in the middle of the interior of the baking box (13) through screws, a left mounting plate III (21) and a right mounting plate III (21) which face towards the left and right and are U-shaped are arranged in the middle of the lower end face of the separation disc (20), lamp holders (22) are uniformly distributed and fixed on the mounting plate III (21), and downward infrared baking lamps (23) are mounted on the lamp holders (22);

the waste gas treatment assembly is arranged above the baking assembly and comprises a liquid sprinkling pipe (31), the liquid sprinkling pipe (31) is arranged in the baking box (13) in a left-right direction and fixed at the top of the baking box (13) through a U-shaped buckle (32), a three-way joint (33) is uniformly inserted on the liquid sprinkling pipe (31), an intermediate joint of the three-way joint (33) vertically faces downwards and is connected with an atomizing sprayer (34), the atomizing sprayer (34) is used for spraying atomized industrial ethanol, the front and back of the bottom of the separating disc (20) are symmetrically provided with two rows of waste gas outlets (24), waste gas pipes (25) are welded at the waste gas outlets (24), an exhaust fan (26) is installed at the top of the waste gas pipes (25), an exhaust port (27) is arranged in the middle of the top of the baking box (13), and an exhaust pipe (28) is welded at the exhaust port (27);

the lower part of carriage (2) is installed and is placed board (35), place stock solution bucket (36) that are equipped with the industry ethanol on board (35), the play liquid end of the bottom of stock solution bucket (36) has the inlet of booster pump (37) through rubber hose connection, the liquid outlet of booster pump (37) is connected with the feed liquor end that spills liquid pipe (31) through feed pipe (38), both ends are equipped with leakage fluid dram (29) and have welded fluid-discharge tube (30) in leakage fluid dram (29) department about the bottom of partition dish (20), fluid-discharge tube (30) are connected through the feed liquor end at the top of rubber hose and stock solution bucket (36).

2. The baking apparatus for PCB as claimed in claim 1, wherein: the exhaust pipe (28) can be connected with an external clean water tank through a rubber hose.

3. The baking apparatus for PCB as claimed in claim 1, wherein: install mount pad (16) in the outside front side bilateral symmetry of toasting case (13), install the pole (17) of putting of carrying of U type between two mount pads (16) about.

4. The baking apparatus for PCB as claimed in claim 1, wherein: the lower part of the front side of the baking oven (13) is uniformly provided with a rectangular observation port (18) and a transparent glass plate (19) is arranged at the observation port (18).