CN214132594U

CN214132594U - Drying device for drying paint film of electronic component

Info

Publication number: CN214132594U
Application number: CN202022812553.0U
Authority: CN
Inventors: 靳艳丽
Original assignee: Shanghai Chenji Electronic Technology Co ltd
Current assignee: Shanghai Chenji Electronic Technology Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-09-07
Anticipated expiration: 2030-11-27

Abstract

The application relates to the technical field of drying equipment, in particular to a drying device for drying a paint film of an electronic component, which comprises an oven, wherein the oven is communicated with a shielding gas generating mechanism; the oven is communicated with a gas recovery mechanism; the gas recovery mechanism is communicated with the protective gas generation mechanism; a drying chamber is formed inside the drying oven; the drying oven is hinged with a sealing door for sealing the drying chamber; a heating lamp tube assembly is arranged inside the oven; the heating lamp tube assembly is arranged on the side wall of the drying chamber; a plurality of object placing plates are connected inside the oven in a sliding manner; the object placing plate is provided with a plurality of air guide channels through the upper surface and the lower surface; the upper surface of the object placing plate is fixedly connected with a supporting frame used for placing the electronic components. This application has this application and has the bonding property that can avoid the thermal oxidation effect to destroy glue and to the oxidation of metal, effectively guarantees the quality of stoving electronic component, carries out purification treatment to volatilizing waste gas simultaneously, guarantees the effect of workshop air quality.

Description

Drying device for drying paint film of electronic component

Technical Field

The application relates to the technical field of drying equipment, in particular to a drying device for drying a paint film of an electronic component.

Background

In order to resist water, moisture, insects, and harmful substances in offices and homes from damaging the printed circuit boards and the components, the printed circuit boards and the components are protected by spraying conformal paint. The three-proofing paint can protect electronic equipment from being corroded by water, moisture, external chemical agents and special use environments, ensures the continuous stability of the electronic equipment, and plays a role in reducing or eliminating the decline of electronic operation performance.

A quick radiating drying device that publication number CN205373290U discloses at least includes: the device comprises a drying device body, a drying device door, a heating device, a heat conduction device, a detection device, a condensing device and an air exhaust device; the drying device body and the drying device door are combined to form a sealed space; the outer layer of the drying device door is provided with a heat dissipation plate; detection device sets up inside the drying device body, detection device includes: a temperature sensor for detecting temperature and a pressure sensor for detecting air pressure; the heat conduction device is arranged on the inner wall of the drying device body and used for heating or cooling the internal environment of the drying device; one end of the condensing device is connected with the drying device body, and the other end of the condensing device is connected with the valve; the air extractor is connected with the drying device body through a connecting pipe, and the extracted air circularly enters the interior of the box body or enters the interior of the box body after being cooled by the condensing device through valve adjustment on the connecting pipe.

The above prior art solutions have the following drawbacks: the printed circuit board and the components are precise, in the printed circuit board, some parts of the electrical components are bonded by glue, the prior art is adopted for heating and drying, the bonding performance of the glue can be damaged under the action of hot oxygen, the connection strength of the electrical components is influenced, and unnecessary defective parts appear.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the quality of the printed circuit board is influenced by the connection strength of the electric element on the printed circuit board when the prior art is adopted for drying, the application aims to provide the drying device for drying the paint film of the electronic component.

The application purpose of the application is realized by the following technical scheme: a drying device for drying a paint film of an electronic component comprises a drying oven, wherein the drying oven is communicated with a protective gas generating mechanism; the oven is communicated with a gas recovery mechanism; the gas recovery mechanism is communicated with the protective gas generation mechanism; a drying chamber is formed inside the drying oven; the drying oven is hinged with a sealing door for sealing the drying chamber; the drying oven is provided with an exhaust pipe communicated with the drying chamber; a heating lamp tube assembly is arranged inside the oven; the heating lamp tube assembly is arranged on the side wall of the drying chamber; a plurality of object placing plates are connected inside the oven in a sliding manner; the object placing plate is provided with a plurality of air guide channels through the upper surface and the lower surface; the upper surface of the object placing plate is fixedly connected with a supporting frame for placing the electronic element; a gas leading-out disc positioned at the bottom of the drying chamber is arranged in the drying oven; the gas leading-out disc is communicated with the protective gas generating mechanism; a gas recovery disc is arranged in the oven; the gas recovery disc is fixedly connected to the top of the drying chamber and communicated with the gas recovery mechanism.

Through adopting above-mentioned technical scheme, this application adopts protective gas to take place mechanism and evenly rush into the oven with protective gas through gaseous derivation dish, after oxygen in the oven is detached through the blast pipe, the work is seted up to the heating lamp pipe subassembly, the electronic component of treating drying is dried in the stoving room temperature rise, protective gas can flow to gaseous recovery mechanism through gas recovery dish, can be purified and recycled by gaseous recovery mechanism, retrieve to protective gas and take place mechanism, this application has the adhesion properties that can avoid the action of thermal oxygen to destroy glue and to the oxidation of metal, effectively guarantee the quality of drying electronic component.

Preferably, the protective gas generating mechanism comprises a nitrogen storage tank and a first air pump, and the top of the nitrogen storage tank is communicated with a connecting pipe for recovering purified gas of the gas recovery mechanism; one end of the connecting pipe is communicated with the top of the nitrogen storage tank, and the other end of the connecting pipe is communicated with the gas recovery mechanism; the side wall of the nitrogen storage tank is communicated with a gas supplementing pipe for supplementing nitrogen; the side wall of the nitrogen storage tank is communicated with an air outlet pipe; one end of the air outlet pipe is communicated with the side wall of the nitrogen storage tank, and the other end of the air outlet pipe is communicated with the air inlet end of the first air pump.

Through adopting above-mentioned technical scheme, save nitrogen gas in the nitrogen gas storage tank through the moisturizing pipe, under the effect of first air pump, nitrogen gas in the nitrogen gas storage tank passes through the outlet duct and gets into gaseous eduction disc, blows to placing the electronic component on putting the thing board, can protect electronic component, avoids the hot oxygen effect, leads to stoving electronic component to destroy to the drying efficiency of assurance guarantees the quality of stoving electronic component simultaneously.

Preferably, the gas outlet pipe and the connecting pipe are both provided with a gas flowmeter.

Through adopting above-mentioned technical scheme, but in time monitoring nitrogen gas storage tank's recovery nitrogen gas volume, output nitrogen gas volume, in time supplementary nitrogen gas guarantees this application can even running.

Preferably, the gas recovery mechanism comprises a gas recovery box body, a second air pump and a third air pump, and the gas inlet end of the second air pump is communicated with the gas recovery disc; the air outlet end of the second air pump is communicated with the air inlet end of the air recovery box body; the air inlet end of the third air pump is communicated with the air outlet end of the gas recovery box body; the air outlet end of the third air pump is communicated with the connecting pipe; the top in the gas recovery box body is vertically and fixedly connected with n first partition plates which are parallel to each other; the bottom in the gas recovery box body is vertically and fixedly connected with n-1 second partition plates; the second partition plate is positioned between the adjacent first partition plates and is parallel to the first partition plates; the vertical distances from the second partition plate to the adjacent first partition plate are equal; the top of the first partition plate is fixedly connected to the inner top of the gas recovery box body; the vertical distance from the bottom surface of the first partition plate to the inner bottom surface of the gas recovery box body is 1.0-3.0 cm; the bottom surface of the second partition plate is fixedly connected to the inner bottom surface of the gas recovery box body; the vertical distance from the top surface of the first partition plate to the inner top surface of the gas recovery box body is 1.0-3.0 cm; the gas recovery box body is provided with 2n purification chambers under the separation action of the first partition plate and the second partition plate; the purification chamber is filled with a gas adsorbent for absorbing paint volatiles.

Through adopting above-mentioned technical scheme, first aspiration pump carries the nitrogen gas in with the nitrogen gas storage tank to gaseous derivation dish, blow to placing the electronic component on putting the thing board, nitrogen gas from down and directional flow, under the effect of second aspiration pump, nitrogen gas flows in the gas recovery box through gas recovery dish, gas passes through gas adsorption in the clean room in proper order, gas purification treatment has been realized, gas adsorption has adsorbed the paint volatile substance in the gas, purified gas is retrieved to nitrogen gas storage tank and is recycled under the effect of third aspiration pump, the adsorption treatment efficiency of this application to paint volatile substance has been guaranteed, thereby guarantee the quality of recovered gas, can carry out reuse, reduce drying cost.

Preferably, the gas adsorption body comprises an outer coating layer, and the outer coating layer is sewn by m pieces of woven fabric; the outer cladding layer is provided with m-1 filling spaces; the filling space is filled with a bamboo charcoal fiber layer; the woven fabric is formed by weaving polyacrylonitrile-based activated carbon fibers as warps and hollow polyester fibers as wefts in a mixed mode.

By adopting the technical scheme, the bamboo charcoal fiber in the bamboo charcoal fiber layer adsorbs paint volatile matters, and the polyacrylonitrile-based activated carbon fiber in the woven fabric can also adsorb the paint volatile matters, so that the odor is decomposed, the gas adsorbent can adsorb the paint volatile matters to purify and recycle nitrogen, the gas adsorbent has good self antibacterial and mildew-proof performance, and the sanitation of the gas adsorbent can be ensured.

Preferably, the heating lamp tube assembly comprises a plurality of heating lamp tubes which are arranged on the side wall of the drying chamber at intervals, each heating lamp tube comprises a high-temperature-resistant glass inner tube, and a resistance wire is spirally wound on the outer wall of each high-temperature-resistant glass inner tube; the outer wall of the high-temperature-resistant glass inner tube is fixedly connected with a high-temperature-resistant glass outer tube; the resistance wire is positioned between the high-temperature-resistant glass inner tube and the high-temperature-resistant glass outer tube.

By adopting the technical scheme, the heating safety of the heating device can be ensured by adopting the structure that the resistance wire is arranged between the high-temperature-resistant glass inner tube and the high-temperature-resistant glass outer tube; the resistance wire spiral winding can promote the heating efficiency of this application in the structure of high temperature resistant glass inner tube.

Preferably, an air guide cavity is integrally formed in the air guide plate; the upper surface of the gas leading-out disk is provided with a plurality of gas holes communicated with the gas guide cavity; the side wall of the gas outlet disc is fixedly communicated with a gas pipe; one end of the gas pipe is fixedly communicated with the side wall of the gas leading-out plate, and the other end of the gas pipe is communicated with the protective gas generating mechanism; a recovery cavity is integrally formed on the inner wall of the gas recovery disc; the lower surface of the gas recovery disc is provided with a plurality of air suction holes communicated with the recovery cavity; the side wall of the gas recovery disc is fixedly communicated with a gas recovery pipe; one end of the gas recovery pipe is fixedly communicated with the side wall of the gas recovery disc, and the other end of the gas recovery pipe is communicated with the gas recovery mechanism.

Through adopting above-mentioned technical scheme, the gas guide hole that the nitrogen gas that mechanism's output can follow the gas of drying chamber bottom and derive the dish evenly blows off is taken place to the protection gas, directional flow in the drying chamber, the suction hole of the gas recovery dish from the drying chamber top gets into gas recovery mechanism, nitrogen gas after gas recovery mechanism purifies is collected and is taken place the mechanism and recycle to the protection gas, can make this application nitrogen gas and spare part and printed circuit board surface contact abundant and even, the volatile gas that paint stoving produced is taken away to nitrogen gas, guarantee to spare part and printed circuit board's drying quality and workshop production environmental quality.

Preferably, the support frame is embedded with a loading body for placing components and printed circuit boards; the loading body comprises a frame body, and a screen is fixedly connected to the inner wall of the frame body.

Through adopting above-mentioned technical scheme, can make its spare part and printed circuit board more abundant contact with nitrogen gas to promote drying efficiency.

In summary, the present application has the following advantages:

1. the application has the advantages that the adhesive property of glue can be prevented from being damaged by the action of thermal oxygen, the metal can be oxidized, and the quality of the dried electronic element can be effectively guaranteed.

2. This application carries out purification treatment to nitrogen gas, can purify the paint volatile substance that the stoving produced, guarantees workshop's air quality, promotes and reduces the stoving cost.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment in the present application.

Fig. 2 is a schematic view of the whole structure of the embodiment of the present application after the sealing door is opened.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Fig. 4 is a schematic structural diagram of a loading body in an embodiment of the present application.

Fig. 5 is a schematic structural diagram of a heating lamp tube in the embodiment of the present application.

Fig. 6 is a schematic structural view of a gas lead-out plate in the embodiment of the present application.

FIG. 7 is a schematic structural diagram of a shielding gas generating mechanism and a gas recovering mechanism in the embodiment of the present application.

FIG. 8 is a schematic structural view of a gas recovery disk in an embodiment of the present application.

Fig. 9 is a schematic structural view of a gas adsorbent in an embodiment of the present application.

In the figure, 1, an oven; 100. an exhaust pipe; 10. a drying chamber; 11. a sealing door; 12. an observation window; 13. transparent glass; 14. a fixed block; 15. a slideway; 2. a shielding gas generating mechanism; 20. a storage box; 201. a first storage chamber; 202. a second housing chamber; 21. a nitrogen storage tank; 211. connecting pipes; 212. a gas supplementing pipe; 213. an air outlet pipe; 22. a first air pump; 23. a gas flow meter; 3. a gas recovery mechanism; 30. a gas adsorbent; 301. an outer cladding layer; 302. weaving by a machine; 303. filling the space; 304. a bamboo charcoal fiber layer; 31. a gas recovery tank; 311. a first partition plate; 312. a second partition plate; 313. a clean room; 314. an air inlet pipe; 315. an air outlet pipe; 32. a second air pump; 33. a third air pump; 4. heating the lamp tube assembly; 40. heating the lamp tube; 400. a strip-shaped groove; 41. a high temperature resistant glass inner tube; 42. a resistance wire; 43. a high temperature resistant glass outer tube; 5. a storage plate; 51. an air guide channel; 52. a support frame; 6. a gas lead-out plate; 61. an air guide cavity; 62. an air vent; 63. a gas delivery pipe; 60. a gas recovery tray; 601. recovering the cavity; 602. a suction hole; 603. a gas recovery pipe; 7. loading a carrier; 71. a frame body; 72. and (4) screening.

Detailed Description

The present application is described in further detail below with reference to figures 1-9.

Referring to fig. 1 and 2, for the drying device for drying the paint film of the electronic component disclosed in the present application, the drying device comprises an oven 1, a drying chamber 10 is formed inside the oven 1, and the oven 1 is hinged with a sealing door 11 for sealing the drying chamber 10. In order to observe the drying degree of the paint conveniently, the sealing door 11 is provided with an observation window 12, and the observation window 12 is sealed and fixedly connected with transparent glass 13. An exhaust pipe 100 communicated with the drying chamber 10 is fixedly communicated with the upper part of the outer wall of the oven 1. In order to facilitate the movement of the oven 1, the bottom of the oven 1 is fixedly connected with a universal wheel.

Referring to fig. 2 and 3, three object placing plates 5 are slidably connected to the inside of the oven 1. Two fixing blocks 14 which are mutually spaced are fixedly connected with the side wall in the oven 1. A slideway 15 is formed between the fixed blocks 14, and the object placing plate 5 can slide in the slideway 15. In order to ensure that the airflow can fully contact with the electronic element to be dried, the object placing plate 5 penetrates through the upper surface and the lower surface to be provided with a plurality of air guide channels 51, the distance between every two adjacent air guide channels 51 is equal, and the porosity of the object placing plate 5 is 60%. The upper surface of the object placing plate 5 is fixedly connected with a supporting frame 52 for placing the electronic components. The support frame 52 is a rectangular frame, and the inner wall of the support frame 52 is provided with an embedding groove. The support frame 52 may have a loading body 7 for placing components and a printed circuit board therein.

Referring to fig. 4, the loading body 7 includes a frame 71 and a 100-mesh screen 72, and the 100-mesh screen 72 is fixedly connected to the inner wall of the frame 71, so as to further ensure that the airflow can sufficiently contact with the electronic component to be dried, and ensure the drying efficiency of the present application. The outer wall of the frame 71 is sleeved with a rubber ring sleeve for enhancing the stability of the loading body 7.

Referring to fig. 5 and fig. 2, two sets of heating lamp tube assemblies 4 are disposed inside oven 1, wherein one set of heating lamp tube assemblies 4 is disposed on a sidewall of drying chamber 10, another set of heating lamp tube assemblies 4 is disposed on another sidewall of drying chamber 10, and heating lamp tube assemblies 4 are disposed on a sidewall of drying chamber 10 oppositely. The heating lamp tube assembly 4 is composed of a plurality of mutually spaced and parallel heating lamp tubes 40, and the central axis direction of the heating lamp tubes 40 is parallel to the ground. The sidewall of the drying chamber 10 is opened with a strip-shaped groove 400 for installing the heating lamp 40. The heating lamp tube 40 is composed of an inner tube 41 of high temperature resistant glass, a resistance wire 42 and an outer tube 43 of high temperature resistant glass, and the inner tube 41 of high temperature resistant glass and the outer tube 43 of high temperature resistant glass are made of quartz glass. The resistance wire 42 is spirally wound on the outer wall of the high-temperature-resistant glass inner tube 41, and the high-temperature-resistant glass outer tube 43 is fixedly connected to the outer wall of the high-temperature-resistant glass inner tube 41. The resistance wire 42 is protected between the inner tube 41 and the outer tube 43.

Referring to fig. 6 and fig. 2, a gas outlet tray 6 is disposed in the bottom of the drying chamber 10 of the oven 1, and the gas outlet tray 6 is communicated with the shielding gas generating mechanism 2. An air guide cavity 61 is integrally formed inside the air outlet disk 6. The upper surface of the gas leading-out disk 6 is vertically and downwards provided with a plurality of gas guide holes 62 communicated with the gas guide cavity 61, and the distance between every two adjacent gas guide holes 62 is equal. The diameter of the gas holes 62 was 2.5mm, and the opening ratio of the upper surface of the gas outlet plate 6 was 50%. The side wall of the gas outlet disk 6 is fixedly communicated with a gas pipe 63. One end of the gas pipe 63 is fixedly communicated with the side wall of the gas leading-out disk 6, and the other end is communicated with the protective gas generating mechanism 2.

Referring to fig. 7 and 2, the shielding gas generating mechanism 2 includes a storage box 20, a nitrogen gas storage tank 21, and a first suction pump 22, and a first storage chamber 201 in which the nitrogen gas storage tank 21 is disposed is formed inside the storage box 20. The storage box 20 is formed therein with a second storage chamber 202 in which the first suction pump 22 is disposed, and the second storage chamber 202 is located at a lower portion of the first storage chamber 201. In order to facilitate the movement of the storage box 20, universal wheels may be fixedly connected to the bottom of the storage box 20. The top of the storage box 20 is fixedly communicated with a connecting pipe 211 which is positioned at the top of the nitrogen storage tank 21 and is communicated with the nitrogen storage tank 21. One end of the connecting pipe 211 is communicated with the top of the nitrogen storage tank 21, and the other end is communicated with the gas recovery mechanism 3. An air supply pipe 212 for supplying nitrogen is fixedly communicated with the upper part of the side wall of the storage box 20, and the air supply pipe 212 is communicated with the side wall of the nitrogen storage tank 21. The lower part of the side wall of the containing box 20 is fixedly communicated with an air outlet pipe 213, and the air outlet pipe 213 is communicated with the side wall of the nitrogen storage tank 21. One end of the air outlet pipe 213 is communicated with the side wall of the nitrogen storage tank 21, and the other end is communicated with the air inlet end of the first air pump 22. The air outlet pipe 213 is communicated with the air inlet end of the first air pump 22, and the air pipe 63 penetrates through the shell of the oven 1 and is communicated with the air outlet end of the first air pump 22. In order to supplement nitrogen into the nitrogen storage tank 21 in time, the air supplement pipe 212 is communicated with a nitrogen generator; the gas outlet pipe 213 and the connecting pipe 211 are fixedly communicated with a gas flowmeter 23.

Referring to fig. 8 and fig. 2, a gas recovery disk 60 is disposed in the oven 1, and the gas recovery disk 60 is fixedly connected to the top of the drying chamber 10 and is communicated with the gas recovery mechanism 3. The inner wall of the gas recovery disk 60 is integrally formed with a recovery cavity 601. The lower surface of the gas recovery disc 60 is vertically and upwardly provided with a plurality of suction holes 602 communicated with the recovery cavity 601, and the distances between the adjacent suction holes 602 are equal. The diameter of the suction holes 602 is 2.5mm, and the opening ratio of the lower surface of the gas recovery disk 60 is 50%. A gas recycling pipe 603 is fixedly communicated with the side wall of the gas recycling tray 60, one end of the gas recycling pipe 603 is fixedly communicated with the side wall of the gas recycling tray 60, and the other end is communicated with the gas recycling mechanism 3.

Referring to fig. 7 and fig. 2, the gas recovery mechanism 3 includes a gas recovery box 31 fixedly connected to the top surface of the storage box 20, and two first partition plates 311 parallel to each other are fixedly connected to the top of the gas recovery box 31. A second partition plate 312 is vertically and fixedly connected to the bottom of the gas recovery tank 31. The second partition plate 312 is positioned between the adjacent first partition plates 311 and the second partition plate 312 and the first partition plates 311 are parallel to each other. The vertical distances from the second separation plate 312 to the adjacent first separation plate 311 are equal. The top of the first partition plate 311 is fixedly connected to the top of the gas recovery tank 31, and the vertical distance from the bottom surface of the first partition plate 311 to the inner bottom surface of the gas recovery tank 31 is 2.0cm, so that a channel for gas circulation is formed. The bottom surface of the second partition plate 312 is fixedly connected to the inner bottom surface of the gas recovery tank 31, and the vertical distance from the top surface of the first partition plate 311 to the inner top surface of the gas recovery tank 31 is 2.0cm, thereby forming a passage for gas to flow through. The gas recovery tank 31 is formed with four purge chambers 313 by the partition action of the first partition plate 311 and the second partition plate 312. The purification chamber 313 is filled with a gas adsorbent 30 for adsorbing paint volatiles.

Referring to fig. 7, an inlet pipe 314 is fixedly communicated with the top of the gas recovery tank 31, the inlet pipe 314 is communicated with the purification chamber 313, and the communication position of the inlet pipe 314 and the purification chamber 313 is located at the leftmost side of the upper surface of the gas recovery tank 31. The gas inlet pipe 314 is connected to the second air pump 32 fixedly connected to the top of the gas recovery tank 31, the gas inlet pipe 314 is connected to the gas outlet end of the second air pump 32, and the gas recovery pipe 603 is connected to the gas inlet end of the second air pump 32.

Referring to fig. 7, an outlet pipe 315 is fixedly connected to the top of the gas recovery tank 31, the outlet pipe 315 is connected to the purification chamber 313, and the connection position between the outlet pipe 315 and the purification chamber 313 is located at the rightmost side of the upper surface of the gas recovery tank 31. The gas enters the purification chambers 313 from the gas inlet pipe 314, flows through the four purification chambers 313 in a serpentine shape, and flows out from the gas outlet pipe 315, so that the contact time of the gas with the gas adsorbent 30 is increased, thereby improving the quality of purified air. The air outlet pipe 315 is communicated with a third air pump 33 fixedly connected to the top of the gas recovery tank 31. The air outlet pipe 315 is connected to the air inlet end of the third air pump 33, and the connecting pipe 211 is connected to the air outlet end of the third air pump 33.

Referring to fig. 9, the gas adsorbent 30 includes an outer cover 301, and the outer cover 301 is sewn by two pieces of woven cloth 302. The outer coating layer 301 is formed with a filling space 303, and the filling space 303 is filled with a bamboo charcoal fiber layer 304 for adsorbing paint volatile matters. In order to enhance the adsorption performance, the woven fabric 302 is formed by mixing and weaving polyacrylonitrile-based activated carbon fibers as warps and hollow polyester fibers as wefts.

The application comprises the following drying operation steps:

step one, opening a sealing door 11, and placing an electronic device to be dried on a screen 72;

step two, closing the sealing door 11, starting the first air pump 22, opening the exhaust pipe 100, using nitrogen in the nitrogen storage tank 21 to drive out air in the drying chamber 10, and allowing the air in the drying chamber 10 to flow to the outside through the exhaust pipe 100;

step three, turning on the first air pump 22 for ten minutes, closing the exhaust pipe 100, turning on the heating lamp tube assembly 4 to heat and dry the electronic device to be dried, turning on the heating lamp tube assembly 4 and simultaneously turning on the second air pump 32 and the third air pump 33, pumping the nitrogen with paint volatile matters in the drying chamber 10 into the gas recovery box 31 to perform adsorption and purification treatment, enabling the nitrogen with paint volatile matters to enter the purification chamber 313 from the air inlet pipe 314, enabling the nitrogen to flow in a snake shape through the four purification chambers 313, flowing to the third air pump 33 from the air outlet pipe 315, and enabling the nitrogen to enter the nitrogen storage tank 21 through the connecting pipe 211 for reuse;

and step four, observing the state of a paint film on the electronic device to be dried through the observation window 12, closing the first air pump 22, the second air pump 32 and the third air pump 33 when the paint film is dried and the drying is finished, opening the sealing door 11, and taking out the dried electronic device.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a drying device for drying electronic components film which characterized in that: comprises an oven (1), wherein the oven (1) is communicated with a protective gas generating mechanism (2); the oven (1) is communicated with a gas recovery mechanism (3); the gas recovery mechanism (3) is communicated with the protective gas generation mechanism (2); a drying chamber (10) is formed inside the oven (1); the oven (1) is hinged with a sealing door (11) for sealing the drying chamber (10); the oven (1) is provided with an exhaust pipe (100) communicated with the drying chamber (10); a heating lamp tube assembly (4) is arranged in the oven (1); the heating lamp tube assembly (4) is arranged on the side wall of the drying chamber (10); a plurality of object placing plates (5) are connected inside the oven (1) in a sliding manner; the object placing plate (5) penetrates through the upper surface and the lower surface and is provided with a plurality of air guide channels (51); the upper surface of the object placing plate (5) is fixedly connected with a supporting frame (52) for placing an electronic component; a gas outlet disc (6) positioned at the bottom of the drying chamber (10) is arranged in the drying oven (1); the gas leading-out disc (6) is communicated with the protective gas generating mechanism (2); a gas recovery disc (60) is arranged in the oven (1); the gas recovery disc (60) is fixedly connected to the top of the drying chamber (10) and is communicated with the gas recovery mechanism (3).

2. The drying device for drying the paint film of the electronic component as claimed in claim 1, characterized in that: the protective gas generating mechanism (2) comprises a nitrogen storage tank (21) and a first air pump (22), and the top of the nitrogen storage tank (21) is communicated with a connecting pipe (211) for recovering purified gas of the gas recovery mechanism (3); one end of the connecting pipe (211) is communicated with the top of the nitrogen storage tank (21) and the other end is communicated with the gas recovery mechanism (3); the side wall of the nitrogen storage tank (21) is communicated with a gas supplementing pipe (212) for supplementing nitrogen; the side wall of the nitrogen storage tank (21) is communicated with an air outlet pipe (213); one end of the air outlet pipe (213) is communicated with the side wall of the nitrogen storage tank (21) and the other end is communicated with the air inlet end of the first air pump (22).

3. The drying device for drying the paint film of the electronic component as claimed in claim 2, characterized in that: and the gas outlet pipe (213) and the connecting pipe (211) are both provided with a gas flowmeter (23).

4. The drying device for drying the paint film of the electronic component as claimed in claim 2 or 3, characterized in that: the gas recovery mechanism (3) comprises a gas recovery box body (31), a second air pump (32) and a third air pump (33), and the gas inlet end of the second air pump (32) is communicated with the gas recovery disc (60); the air outlet end of the second air pump (32) is communicated with the air inlet end of the air recovery box body (31); the air inlet end of the third air pump (33) is communicated with the air outlet end of the gas recovery box body (31); the air outlet end of the third air pump (33) is communicated with the connecting pipe (211); the top in the gas recovery box body (31) is vertically and fixedly connected with n first partition plates (311) which are parallel to each other; the bottom in the gas recovery box body (31) is vertically and fixedly connected with n-1 second partition plates (312); the second separation plate (312) is positioned between the adjacent first separation plates (311) and the second separation plate (312) and the first separation plates (311) are parallel to each other; the vertical distances from the second separation plate (312) to the adjacent first separation plate (311) are equal; the top of the first partition plate (311) is fixedly connected with the top in the gas recovery box body (31); the vertical distance from the bottom surface of the first partition plate (311) to the inner bottom surface of the gas recovery box body (31) is 1.0-3.0 cm; the bottom surface of the second partition plate (312) is fixedly connected with the inner bottom surface of the gas recovery box body (31); the vertical distance from the top surface of the first partition plate (311) to the inner top surface of the gas recovery box body (31) is 1.0-3.0 cm; the gas recovery box body (31) is provided with 2n purification chambers (313) under the separation action of a first separation plate (311) and a second separation plate (312); the purification chamber (313) is filled with a gas adsorbent (30) for adsorbing paint volatile matters.

5. The drying device for drying the paint film of the electronic component as claimed in claim 4, characterized in that: the gas adsorption body (30) comprises an outer coating layer (301), and the outer coating layer (301) is sewn by m pieces of woven fabric (302); the outer cladding (301) is formed with m-1 filling spaces (303); the filling space (303) is filled with a bamboo charcoal fiber layer (304); the woven fabric (302) is formed by weaving polyacrylonitrile-based activated carbon fibers as warps and hollow polyester fibers as wefts in a mixed mode.

6. The drying device for drying the paint film of the electronic component as claimed in claim 1, characterized in that: the heating lamp tube assembly (4) comprises a plurality of heating lamp tubes (40) which are arranged on the side wall of the drying chamber (10) at intervals, each heating lamp tube (40) comprises a high-temperature-resistant glass inner tube (41), and resistance wires (42) are spirally wound on the outer wall of each high-temperature-resistant glass inner tube (41); the outer wall of the high-temperature-resistant glass inner tube (41) is fixedly connected with a high-temperature-resistant glass outer tube (43); the resistance wire (42) is positioned between the high-temperature-resistant glass inner tube (41) and the high-temperature-resistant glass outer tube (43).

7. The drying device for drying the paint film of the electronic component as claimed in claim 1, characterized in that: an air guide cavity (61) is integrally formed in the air guide-out disk (6); the upper surface of the gas leading-out disk (6) is provided with a plurality of gas guide holes (62) communicated with the gas guide cavity (61); the side wall of the gas leading-out disc (6) is fixedly communicated with a gas pipe (63); one end of the gas pipe (63) is fixedly communicated with the side wall of the gas guide-out disc (6), and the other end is communicated with the protective gas generating mechanism (2); a recovery cavity (601) is integrally formed on the inner wall of the gas recovery disc (60); the lower surface of the gas recovery disc (60) is provided with a plurality of air suction holes (602) communicated with the recovery cavity (601); a gas recovery pipe (603) is fixedly communicated with the side wall of the gas recovery disc (60); one end of the gas recovery pipe (603) is fixedly communicated with the side wall of the gas recovery disc (60) and the other end is communicated with the gas recovery mechanism (3).

8. The drying device for drying the paint film of the electronic component as claimed in claim 1, characterized in that: a loading body (7) for placing components and a printed circuit board is embedded on the supporting frame (52); the loading body (7) comprises a frame body (71), and a screen (72) is fixedly connected to the inner wall of the frame body (71).