CN110849083B

CN110849083B - PCB curing glue drying device

Info

Publication number: CN110849083B
Application number: CN201911160827.8A
Authority: CN
Inventors: 陈志勇; 朱和梁; 龙恩
Original assignee: Leiyang Qixin Electronic Technology Co ltd
Current assignee: Leiyang Qixin Electronic Technology Co ltd
Priority date: 2019-11-23
Filing date: 2019-11-23
Publication date: 2020-12-22
Anticipated expiration: 2039-11-23
Also published as: CN110849083A

Abstract

The invention relates to the technical field of electronic production, in particular to a PCB curing adhesive drying device which can save electric energy, improve practicability, reduce damage to electronic products needing drying and improve use reliability.

Description

PCB curing glue drying device

Technical Field

The invention relates to the technical field of electronic production, in particular to a PCB curing adhesive drying device.

Background

As is well known, electronic products, such as PCB circuit board, after the paster is accomplished, need seal the glue to electronic component, promptly through coating epoxy glue on electronic component to the realization is to electronic component's waterproof, in order to improve production efficiency, after gluing electronic product coating, need put into drying cabinet with it and go the stoving.

Through retrieval, the invention patent with the Chinese patent publication number of CN109357505A discloses a drying device for PCB curing glue, which comprises a drying box body with one side provided with an opening, wherein an air heater is fixedly installed at one side of the drying box body, a pipeline is fixedly installed at an air outlet of the air heater, one end of the pipeline, which is far away from the air heater, extends into the drying box body, a plurality of nozzles are fixedly installed on the pipeline, and an exhaust fan is fixedly installed at the other side of the drying box body.

Above-mentioned patent discovers in the use, it is at the in-process of drying to electronic product, the steam that directly will dry the use through the air exhauster is discharged, because still there is the heat in the steam that the stoving used, direct discharge leads to the energy extravagant, it is relatively poor to lead to its practicality, because contain more impurity in the gas among the external environment, it is inside through the air heater direct gas suction to the stoving box with among the external environment, cause the destruction to the electronic product that needs were dried easily, lead to its use reliability lower.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the PCB curing adhesive drying device which saves electric energy, improves the practicability, reduces the damage to electronic products needing drying and improves the use reliability.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: the PCB curing glue drying device comprises a drying box body, wherein a working cavity is arranged inside the drying box body, a taking and placing opening is formed in the front end of the drying box body, a sealing baffle cover is arranged on the taking and placing opening, a breather valve is arranged on the lower side area of the right side wall of the drying box body in a communicated mode, a placing frame is arranged on the lower side area of the inside of the working cavity, heating boxes are arranged on the left side and the right side of the top end of the drying box body respectively, electric heating rods are arranged inside the heating boxes, a controller for controlling the electric heating rods is arranged on the top end of each heating box, the controller is electrically connected with the electric heating rods, a temperature sensor is arranged on each heating box, a temperature display is electrically connected onto each temperature sensor, a first air outlet pipe and a second air outlet pipe are respectively communicated with the lower side areas of one side wall of the two heating boxes, and a first valve, the upper side of the inside of the working chamber is transversely provided with an air injection box, the output ends of a first air outlet pipe and a second air outlet pipe penetrate through the top side wall of the drying box body and extend into the working chamber to be communicated with the top end of the air injection box, the bottom end of the air injection box is communicated with a plurality of nozzles, the left side and the right side of the outside of the drying box body are respectively and longitudinally provided with an air return pipe and an air inlet pipe, the top output end of the air return pipe is communicated with the left end of the heating box positioned on the left side, the bottom input end of the air return pipe is communicated with the left side wall of the drying box body, the top input end of the air inlet pipe is communicated with the right side wall of the heating box positioned on the right side, the bottom output end of the air inlet pipe is communicated with the outside, the inside of the, and filter cotton is filled among the multiple groups of filter screens, and a first suction fan and a second suction fan are respectively communicated with the upper areas of the air return pipe and the air inlet pipe.

On the basis of the scheme, the rack further comprises a left side plate, a right side plate, a first fixing plate and a second fixing plate, wherein the bottoms of the left side plate and the right side plate are respectively connected with the left side and the right side of the top end of the rack, the bottoms of the first fixing plate and the second fixing plate are respectively connected with the left side and the right side of the middle area of the top end of the rack, the left side plate, the right side plate, the first fixing plate and the second fixing plate are all arranged in parallel, a plurality of bearings are rotatably sleeved on the top ends of the first fixing plate and the second fixing plate in the front-back direction respectively, a rotating shaft is rotatably arranged between the two bearings concentrically arranged in the left-right direction respectively, a left driving plate and a right driving clamping plate are concentrically arranged at the left end and the right end of the rotating shaft respectively, a transmission gear is fixedly sleeved outside the plurality of rotating shafts, and the left part output of motor installs with one heart and drives the gear, drives the bottom meshing contact of gear and chain, the equal fore-and-aft direction equipartition of right-hand member upside of left side board and the left end upside of right side board is rotatable to be provided with a plurality of driven shafts, and each the other end of driven shaft is all installed with one heart from movable clamp plate, and the horizontal one-to-one of driven shaft on pivot, left side board and the right side board just sets up with one heart.

Further, all be provided with spring assembly on driven splint, the left side drive splint and the right side drive splint to buffering splint are all installed to the other end of spring assembly.

Furthermore, the upper middle section area of the air return pipe and the upper middle section area of the air inlet pipe are respectively communicated with the air return pipe and the air inlet pipe in a sealing mode through the matching of flanges and bolts.

Still further, the rack is including placing board and four landing legs to the top and the bottom of four landing legs are respectively with the four corners position region of placing the board bottom and the four corners position region longitudinal connection of stoving box bottom side inner wall.

Still further, the placing plate is provided with a plurality of vertically penetrating exhaust through holes.

Still further, the bottom end of the drying box body is transversely provided with an anti-skid bottom plate.

(III) advantageous effects

Compared with the prior art, the invention provides a PCB curing adhesive drying device, which has the following beneficial effects:

1. the PCB curing glue drying device can be used for placing electronic products through the placing rack, the taking and placing opening is closed through the sealing blocking cover, air can be introduced into the heating box on the right side through the air inlet pipe through the second suction fan, the electric heating rod in the heating box is heated through the controller, so that gas entering the heating box can be heated, the temperature of the gas in the heating box is transmitted to the temperature display through the temperature sensor for temperature display, whether the temperature of the gas in the heating box reaches the temperature for drying the electronic products is judged through the temperature of the temperature display, the heated gas is controlled to enter the working cavity through the second valve for drying the electronic products, hot gas flowing from top to bottom for drying can be sucked into the heating box on the left side again through the first air suction fan in the drying process, the electric heating rod in the heating box is heated through the controller, thereby can heat the gas that gets into the heating cabinet inside, gas temperature transmission through temperature sensor with the heating cabinet inside carries out the temperature display for temperature monitor, temperature through temperature monitor, treat after the temperature reaches usable temperature, through controlling first valve, let in gas to the working chamber inside and dry the use to electronic product, guarantee the pressure stability of working chamber inside through the breather valve, thereby can be through the setting of muffler, the gas that will have the temperature heats once more, because the gas of retrieving contains the temperature, thereby when reheating, can reduce the consumption of electric energy, the energy saving.

2. This PCB solidification glues drying device through the setting of jet-propelled case and a plurality of nozzle, can make steam blow evenly on to electronic product, improves the stoving effect.

3. This drying device is glued in PCB solidification can filter the absorption to retrieving the gas to the heating cabinet inside and entering into the gas to the working chamber inside by the external world respectively through the activated carbon adsorbent in muffler and the intake pipe and filter the cotton, reduces the destruction to the electronic product that needs the stoving, reduces and uses the reliability.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a front cross-sectional structural view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2A;

FIG. 4 is an enlarged view of a portion of FIG. 2 at B according to the present invention;

FIG. 5 is a schematic view of the three-dimensional structure of the connection of the transmission gear, the chain, the motor, the driving gear and the like.

In the figure: 1. drying the box body; 2. sealing the blocking cover; 3. a breather valve; 4. a heating box; 5. an electrical heating rod; 6. a controller; 7. a temperature sensor; 8. a temperature display; 9. a first air outlet pipe; 10. a second air outlet pipe; 11. a first valve; 12. a second valve; 13. an air jet box; 14. a nozzle; 15. an air return pipe; 16. an air inlet pipe; 17. a baffling net; 18. an activated carbon adsorbent; 19. a filter screen; 20. filtering cotton; 21. a first suction fan; 22. a second suction fan; 23. a left side plate; 24. a first fixing plate; 25. a rotating shaft; 26. a left driving plate; 27. a transmission gear; 28. a chain; 29. a motor; 30. driving the gear; 31. a driven shaft; 32. a driven splint; 33. a spring set; 34. a buffer clamping plate; 35. a flange; 36. a bolt; 37. placing the plate; 38. a support leg; 39. an exhaust through hole; 40. an anti-skid bottom plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1-5, a PCB curing adhesive drying device includes a drying box 1, a working chamber is disposed inside the drying box 1, a fetching and placing opening is disposed at the front end of the drying box 1, a sealing cover 2 is disposed on the fetching and placing opening, a breather valve 3 is installed in a lower side area of a right side wall of the drying box 1 in a communicating manner to ensure stable internal pressure of the working chamber, a placing frame is installed in the lower side area of the working chamber for placing electronic products, heating boxes 4 are disposed on left and right sides of the top end of the drying box 1, electric heating rods 5 are disposed inside the heating boxes 4, a controller 6 for controlling the electric heating rods 5 is disposed on the top ends of the heating boxes 4, the controller 6 is electrically connected with the electric heating rods 5 for controlling the electric heating rods 5 to heat gas entering the heating boxes 4 for drying the electronic products, a temperature sensor 7 is installed on the heating boxes 4, and the temperature sensor 7 is electrically connected with a temperature display 8, so that the temperature of the gas inside the heating boxes 4 can be conveniently known, the temperature display is used for controlling the gas heating temperature in time, the lower side areas of the opposite side walls of the two heating boxes 4 are respectively communicated with a first gas outlet pipe 9 and a second gas outlet pipe 10, the first gas outlet pipe 9 and the second gas outlet pipe 10 are respectively communicated with a first valve 11 and a second valve 12, the upper side of the inside of the working cavity is transversely provided with a gas spraying box 13, the output ends of the first gas outlet pipe 9 and the second gas outlet pipe 10 penetrate through the top side wall of the drying box body 1 and extend into the inside of the working cavity to be communicated with the top end of the gas spraying box 13, the bottom end of the gas spraying box 13 is communicated with a plurality of nozzles 14, heated hot gas can be conveniently sprayed out from the gas spraying box 13 and the plurality of nozzles 14, the gas outlet is uniform, the drying effect is improved, the left side and the right side of the, and the top output end of the air return pipe 15 is communicated with the left end of the heating box 4 positioned at the left side, the bottom input end of the air return pipe 15 is communicated with the left side wall of the drying box body 1, the top input end of the air inlet pipe 16 is communicated with the right side wall of the heating box 4 positioned on the right side, the bottom output end of the air inlet pipe 16 is communicated with the outside, the air return pipe 15 is internally provided with a baffling net 17, and the baffling net 17 is filled with an active carbon adsorbent 18, the baffling net 17 improves the contact area between the recovered gas and the active carbon adsorbent 18, improves the adsorption effect on the pungent smell in the recovered gas, a plurality of groups of filter screens 19 are transversely and uniformly distributed in the air inlet pipe 16, and the filter cotton 20 is filled between the plurality of groups of filter screens 19, so as to improve the filtering effect of the gas entering the working chamber, a first suction fan 21 and a second suction fan 22 are respectively arranged on the air return pipe 15 and the upper area of the air inlet pipe 16 in a communication mode.

It should also be noted that, the middle section region on muffler 15 and intake pipe 16 all is through flange 35 and the sealed intercommunication of bolt 36's cooperation respectively with muffler 15 and intake pipe 16, the rack is including placing board 37 and four landing legs 38 to the top and the bottom of four landing legs 38 respectively with the four corners position region of placing board 37 bottom and the four corners position region longitudinal connection of drying box 1 bottom side inner wall, it is provided with a plurality of exhaust through holes 39 that run through from top to bottom to place on the board 37, and the gas of being convenient for runs through on placing board 37 and flows through, reduces the resistance to gas, improves the stoving effect, the bottom of drying box 1 transversely is provided with anti-skidding bottom plate 40, improves the stability in the whole use.

The working principle of this embodiment is to open the sealing cover 2, first place the electronic product on the placing plate 37, close the sealing cover 2, connect the first suction fan 21 and the second suction fan 22 with the external power, filter the gas through the air inlet pipe 16 via the second suction fan 22 by passing through the multiple sets of filter screens 19 and filter cotton 20, heat the filtered gas through the heating box 4 at the right side, blow the heated gas through the second air outlet pipe 10 and the nozzle 14 of the air jet box 13 uniformly onto the electronic product, dry the electronic product, simultaneously open the first suction fan 21 to make the gas blown from the upper part to the electronic product flow downward, improve the fluidity of the hot gas in the working chamber, and recycle and adsorb the activated carbon adsorbent 18 in the air return pipe 15 and the air return pipe 15, reduce the influence of the external gas environment caused by the accidental discharge of the pungent odor generated in the drying process, get into the inside heating of heating cabinet 4 of left side position through muffler 15, observe heating temperature through temperature display 8, on 14 even blows to the electronic product through jet-propelled case 13's nozzle once more, dry the electronic product, guarantee the stability of work intracavity portion pressure through breather valve 3, can select first valve 11 and second valve 12, the energy saving according to the in-service use condition.

Example 2

Referring to fig. 1-5, the drying apparatus for PCB curing adhesive further comprises a left side plate 23, a right side plate, a first fixing plate 24 and a second fixing plate, wherein the bottom ends of the left side plate 23 and the right side plate are respectively connected with the left side and the right side of the top end of the rack, the bottom ends of the first fixing plate 24 and the second fixing plate are respectively connected with the left side and the right side of the middle area of the top end of the rack, the left side plate 23, the right side plate, the first fixing plate 24 and the second fixing plate are all arranged in parallel, the top ends of the first fixing plate 24 and the second fixing plate are rotatably sleeved with a plurality of bearings in the front-back direction, a rotating shaft 25 is rotatably arranged between two bearings concentrically arranged in the left-right direction, the left end and the right end of the rotating shaft 25 are respectively concentrically provided with a left driving plate 26 and a right clamping plate for driving, the outer portions of the plurality of rotating shafts, the top mid-mounting of rack has motor 29, and the concentric drive gear 30 that installs of left portion output of motor 29, drive gear 30 and the bottom meshing contact of chain 28, through the rotation of motor 29, can make drive gear 30 rotate, thereby drive chain 28 and drive a plurality of drive gear 27 and rotate, make a plurality of pivots 25 rotate, through the cooperation of driven splint 32 with left drive board 26 and right drive board respectively, press from both sides the electronic product between driven splint 32 and left drive board 26, or press from both sides tightly between driven splint 32 and right drive board, through the rotation of pivot 25, make the electronic product rotate, it is more even to dry, the equal fore-and-aft direction equipartition of right-hand member upside of left side board 23 and the left end upside of right side board is rotatable to be provided with a plurality of driven shafts 31, and the other end of each driven shaft 31 all installs driven splint 32 with one heart, pivot 25, The driven shafts 31 on the left side plate 23 and the right side plate are arranged in a one-to-one transverse and concentric manner.

It should be further noted that the driven clamping plate 32, the left driving clamping plate and the right driving clamping plate are all provided with a spring group 33, and the other end of the spring group 33 is provided with a buffer clamping plate 34, so that the clamping device is suitable for clamping electronic products of different sizes, and meanwhile, the protection of the clamped electronic products is improved through the flexibility of the springs.

The working principle of this embodiment, on the basis of embodiment 1, can press from both sides the electronic product respectively between driven splint 32, left drive board 26 and the buffering splint 34 on the right drive board, and open motor 29 circular telegram, make it drive the electronic product and slowly rotate, dry evenly.

In the description herein, it is to be noted that, unless expressly stated or limited otherwise, the terms "connected" and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection may be mechanical or electrical, and may be direct or indirect via an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, it is noted that relational terms such as first and second, and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

PCB solidification glues drying device, including stoving box (1), its characterized in that: a working chamber is arranged in the drying box body (1), a taking and placing opening is formed in the front end of the drying box body (1), a sealing baffle cover (2) is arranged on the taking and placing opening, a breather valve (3) is installed in the lower side area of the right side wall of the drying box body (1) in a communicated mode, a placing frame is installed in the lower side area of the inner portion of the working chamber, heating boxes (4) are arranged on the left side and the right side of the top end of the drying box body (1), electric heating rods (5) are arranged in the heating boxes (4), a controller (6) for controlling the electric heating rods (5) is arranged on the top end of each heating box (4), the controller (6) is electrically connected with the electric heating rods (5), a temperature sensor (7) is installed on each heating box (4), a temperature display (8) is electrically connected to the temperature sensor (7), a first air outlet pipe (9) and a second air outlet pipe (10) are respectively communicated with the lower side areas of, a first valve (11) and a second valve (12) are respectively communicated and arranged on the first air outlet pipe (9) and the second air outlet pipe (10), an air injection box (13) is transversely arranged on the upper side of the inside of the working cavity, the output ends of the first air outlet pipe (9) and the second air outlet pipe (10) penetrate through the top side wall of the drying box body (1) and extend into the inside of the working cavity to be communicated with the top end of the air injection box (13), a plurality of nozzles (14) are communicated and arranged at the bottom end of the air injection box (13), a return pipe (15) and an air inlet pipe (16) are respectively and longitudinally arranged on the left side and the right side of the outside of the drying box body (1), the top output end of the return pipe (15) is communicated with the left end of the heating box (4) on the left side, the bottom input end of the return pipe (15) is communicated with the left side wall of the drying box body (1), the top input end of the, the bottom output end of the air inlet pipe (16) is communicated with the outside, a baffling net (17) is arranged inside the air return pipe (15), an activated carbon adsorbent (18) is filled inside the baffling net (17), a plurality of groups of filter screens (19) are transversely and uniformly distributed inside the air inlet pipe (16), filter cotton (20) is filled between the filter screens (19), a first suction fan (21) and a second suction fan (22) are respectively communicated with the upper area of the air return pipe (15) and the upper area of the air inlet pipe (16), the air return pipe further comprises a left side plate (23), a right side plate, a first fixing plate (24) and a second fixing plate, the bottom ends of the left side plate (23) and the right side plate are respectively connected with the left side and the right side of the top end of the placing frame, and the bottom ends of the first fixing plate (24) and the second fixing plate are respectively connected with the left side and the, the left side plate (23), the right side plate, the first fixing plate (24) and the second fixing plate are arranged in parallel, a plurality of bearings are rotatably sleeved on the top ends of the first fixing plate (24) and the second fixing plate in the front-back direction, a rotating shaft (25) is rotatably arranged between the two bearings concentrically arranged in the left-right direction, a left driving plate (26) and a right driving clamping plate are concentrically arranged at the left end and the right end of the rotating shaft (25) respectively, a transmission gear (27) is fixedly sleeved outside the rotating shafts (25), chains (28) are sleeved on the transmission gears (27), a motor (29) is installed in the middle of the top end of the placing frame, a driving gear (30) is concentrically installed at the left output end of the motor (29), the driving gear (30) is in meshing contact with the bottom end of the chains (28), a plurality of driven shafts (31) are uniformly arranged on the upper side of the right end of the left side plate (23) and on the, and the other end of each driven shaft (31) is concentrically provided with a driven clamping plate (32), and the driven shafts (31) on the rotating shaft (25), the left side plate (23) and the right side plate are transversely and concentrically arranged in a one-to-one correspondence manner.
2. The PCB curing glue drying device of claim 1, wherein: all be provided with spring assembly (33) on driven splint (32), left driving plate (26) and the right driving splint to buffer splint (34) are all installed to the other end of spring assembly (33).
3. The PCB curing glue drying device of claim 2, wherein: the upper middle section area of the air return pipe (15) and the upper middle section area of the air inlet pipe (16) are respectively communicated with the air return pipe (15) and the air inlet pipe (16) in a sealing mode through the matching of a flange (35) and a bolt (36).
4. The PCB curing glue drying device of claim 3, wherein: the rack comprises a placing plate (37) and four supporting legs (38), and the top ends and the bottom ends of the four supporting legs (38) are respectively and longitudinally connected with the four-corner position area of the bottom end of the placing plate (37) and the four-corner position area of the inner wall of the bottom side of the drying box body (1).
5. The PCB curing glue drying device of claim 4, wherein: the placing plate (37) is provided with a plurality of air exhaust through holes (39) which penetrate through the placing plate from top to bottom.
6. The PCB curing glue drying device of claim 5, wherein: the bottom end of the drying box body (1) is transversely provided with an anti-skidding bottom plate (40).