阅读说明：本技术 一种电子产品加工用外观喷涂装置 (Outward appearance spraying device is used in electronic product processing ) 是由 黄建英 于 2021-09-15 设计创作，主要内容包括：本发明公开了一种电子产品加工用外观喷涂装置,包括底板和位于底板上的输送带,所述底板的上表面固定连接有机械臂,所述机械臂远离底板的一端设置有安装板,所述安装板上设置有用于对PCB板进行喷涂的雾化喷头,且安装板上设置有回流机构。本发明中,通过设置雾化喷头,采用将纳米防水液进行雾化后喷涂在在PCB板上的方式,在PCB板上形成纳米涂层对PCB板进行保护,不但减少了纳米防水液的消耗,而且无需晾晒工序,大幅缩减了PCB板的生产周期,提高了PCB板的生产效率。(The invention discloses an appearance spraying device for processing electronic products, which comprises a bottom plate and a conveying belt positioned on the bottom plate, wherein the upper surface of the bottom plate is fixedly connected with a mechanical arm, one end of the mechanical arm, which is far away from the bottom plate, is provided with an installation plate, the installation plate is provided with an atomizing nozzle for spraying a PCB, and the installation plate is provided with a backflow mechanism. According to the invention, the atomization nozzle is arranged, and the nano waterproof liquid is atomized and sprayed on the PCB, so that the nano coating is formed on the PCB to protect the PCB, thus the consumption of the nano waterproof liquid is reduced, the airing process is not needed, the production cycle of the PCB is greatly shortened, and the production efficiency of the PCB is improved.)

1. An appearance spraying device for processing electronic products comprises a bottom plate (1) and a conveying belt (2) positioned on the bottom plate (1), and is characterized in that the upper surface of the bottom plate (1) is fixedly connected with a mechanical arm (3), one end, far away from the bottom plate (1), of the mechanical arm (3) is provided with a mounting plate (4), the mounting plate (4) is provided with an atomizing nozzle (5) used for spraying a PCB, and the mounting plate (4) is provided with a backflow mechanism (6);

the backflow mechanism (6) comprises an air injection pipe (601) and an air return pipe (602), the air injection pipe (601) and the air return pipe (602) are arranged by penetrating through the mounting plate (4), the upper ends of the air injection pipe (601) and the air return pipe (602) are respectively communicated with a first shell (603) and a second shell (604), the first shell (603) and the second shell (604) are arranged by being communicated through a pipeline, the inner walls of the first shell (603) and the second shell (604) are respectively and rotatably connected with a rotating shaft (605), the side wall of the rotating shaft (605) is fixedly connected with fan blades (606) which are arranged in a surrounding manner, the two rotating shafts (605) respectively penetrate through the inner walls of the first shell (603) and the second shell (604) and extend to the outer parts of the first shell (603) and the second shell (604), one end, far away from the fan blades (606), of the rotating shaft (605) is fixedly connected with a belt pulley (607), the side wall of the second shell (604) is fixedly connected with a driving motor (608), and the output end of the driving motor (608) is fixedly connected with one of the belt pulleys (607) and is arranged, two of the belt pulleys (607) are connected and arranged through belt transmission, the backflow mechanism (6) can drive the coating to flow back upwards so as to spray the PCB without dead angles, the lower surface of the mounting plate (4) is fixedly connected with an infrared sensor (10), the mounting plate (4) is provided with two three-way electromagnetic valves (11), the two three-way electromagnetic valves (11) are respectively communicated with the air injection pipe (601) and the air return pipe (602), the three-way electromagnetic valves (11) communicated with the air injection pipe (601) are also communicated with a blowpipe (12), and the three-way electromagnetic valves (11) communicated with the air return pipe (602) are also communicated with an air inlet pipe (13).

2. The appearance spraying device for processing the electronic products as claimed in claim 1, wherein one end of the mechanical arm (3) far away from the bottom plate (1) is fixedly connected with a 180-degree rotary cylinder (7), and the lower end of the 180-degree rotary cylinder (7) is fixedly connected with the mounting plate (4).

3. The appearance spraying device for processing the electronic products as claimed in claim 1, wherein the lower end of the air injection pipe (601) is communicated with a shunt pipe (8), and the shunt pipe (8) is provided with a plurality of air outlets (9).

4. The appearance spraying device for processing the electronic products as claimed in claim 1, wherein the air injection pipe (601) is communicated with an atomizer (14), and the atomizer (14) is fixedly connected with the lower surface of the mounting plate (4).

5. The appearance spraying device for processing the electronic products is characterized in that a microphone (15) is arranged on the lower surface of the mounting plate (4), the microphone (15) is electrically connected with a signal processor, and the signal processor is electrically connected with an alarm (16).

6. The appearance spraying device for processing the electronic products as claimed in claim 1, wherein a bell mouth (17) is arranged at the lower end of the air return pipe (602).

Technical Field

The invention relates to the technical field of electronic component manufacturing, in particular to an appearance spraying device for processing electronic products.

Background

The early electronic products mainly use electronic tubes as basic elements so as to name the electronic products, and along with the development of science and technology, the traditional electronic tubes are replaced by the PCBs, in order to protect the PCBs, the PCBA soaking type nano coating becomes the last process in the processing of the PCBs, namely, the PCBs are directly soaked in nano waterproof liquid for 3-5 seconds, and the PCBs are taken out and naturally aired at normal temperature for about 10 minutes and then shelled.

In the prior art, the nano coating is coated in a paint dipping mode, the operation is troublesome, the nano waterproof liquid needs to be dried after being taken out, the operation is complicated, the manufacturing period is long, the consumption of the nano waterproof liquid is large, and the volatilization loss is large.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides an appearance spraying device for processing electronic products.

In order to achieve the purpose, the invention adopts the following technical scheme:

an appearance spraying device for processing electronic products comprises a bottom plate and a conveying belt positioned on the bottom plate, wherein the upper surface of the bottom plate is fixedly connected with a mechanical arm, one end of the mechanical arm, which is far away from the bottom plate, is provided with a mounting plate, the mounting plate is provided with an atomizing nozzle for spraying a PCB, and the mounting plate is provided with a backflow mechanism;

the backflow mechanism comprises an air injection pipe and an air return pipe, the air injection pipe and the air return pipe are arranged through a mounting plate, the upper ends of the air injection pipe and the air return pipe are respectively communicated with a first shell and a second shell, the first shell and the second shell are communicated through a pipeline, the inner walls of the first shell and the second shell are respectively and rotatably connected with a rotating shaft, the side wall of the rotating shaft is fixedly connected with fan blades which are arranged in a surrounding manner, the two rotating shafts respectively penetrate through the inner walls of the first shell and the second shell and extend to the outer portions of the first shell and the second shell, one end, far away from the fan blades, of the rotating shaft is fixedly connected with a belt pulley, the side wall of the second shell is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with one of the belt pulleys, the two belt pulleys are connected through belt transmission, the backflow mechanism can drive the coating to flow upwards, thereby carry out the spraying at no dead angle to the PCB board, the lower fixed surface of mounting panel is connected with infrared sensor, be provided with two three-way solenoid valves on the mounting panel, two three-way solenoid valves set up with jet-propelled pipe and muffler intercommunication respectively, with jet-propelled pipe intercommunication three-way solenoid valve still communicates there is the blowpipe, with the muffler intercommunication three-way solenoid valve still communicates there is the intake pipe.

Preferably, one end of the mechanical arm, which is far away from the bottom plate, is fixedly connected with a 180-degree rotary cylinder, and the lower end of the 180-degree rotary cylinder is fixedly connected with the mounting plate.

Preferably, the lower end of the air injection pipe is communicated with a flow dividing pipe, and the flow dividing pipe is provided with a plurality of air outlets.

Preferably, the gas ejector pipe is communicated with an atomizer, and the atomizer is fixedly connected with the lower surface of the mounting plate.

Preferably, the lower surface of mounting panel is provided with the microphone, and microphone electrically connected has signal processor, signal processor electrically connected has the alarm.

Preferably, the lower end of the air return pipe is provided with a bell mouth.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, by arranging the atomizing spray head, the nano waterproof liquid is atomized and sprayed on the PCB, and the nano coating is formed on the PCB to protect the PCB, so that the consumption of the nano waterproof liquid is reduced, the airing process is not needed, the production cycle of the PCB is greatly shortened, and the production efficiency of the PCB is improved;

in addition, through setting up the backward flow mechanism, utilize gas ejector and muffler to drive the air near the atomizer and form the circulation to when carrying out the nanometer coating spraying to the PCB board, drive the waterproof liquid of partial atomizing upwards to move, thereby carry out the spraying to the lower surface of component stitch on the PCB board, finally realize the purpose to the no dead angle spraying of PCB board.

2. According to the invention, the infrared sensor is matched with the two three-way electromagnetic valves, so that in the spraying process, when no element exists on the PCB, air is controlled to enter from the air inlet pipe and be blown out from the blow pipe, and thus the air blown out from the blow pipe is utilized to accelerate the evaporation efficiency of the nano waterproof liquid on the PCB, and the nano waterproof liquid on the PCB after spraying is rapidly dried;

3. according to the invention, the orientation of the mounting plate can be adjusted by arranging the 180-degree rotary cylinder, when a PCB with a large area is sprayed, the PCB can be driven to reciprocate by the conveyer belt, and meanwhile, the mounting plate is rotated, so that the positions of the air injection pipe and the air return pipe corresponding to the atomizing nozzle are correct, and the moving track of part of atomized nano waterproof liquid is adjusted by the backflow mechanism after the PCB is sprayed by the atomizing nozzle.

4. According to the invention, the microphone is arranged, and the microphone is matched with signal processing to monitor the sound of the air blown to the PCB when the air blows to the element, so that the condition that the pin of the element is connected to the PCB without cold solder joint or the welding spot is too large is judged by utilizing the air flow sound, and the detection of the PCB is realized.

Drawings

Fig. 1 is a schematic structural diagram of an appearance spraying apparatus for processing an electronic product according to the present invention;

fig. 2 is a partial structural schematic view of an appearance spraying device for processing electronic products according to the present invention;

fig. 3 is a schematic bottom view of a reflow mechanism of an appearance spraying apparatus for processing electronic products according to the present invention;

FIG. 4 is a schematic top-down view of a reflow mechanism of an appearance spraying apparatus for processing electronic products according to the present invention;

FIG. 5 is a schematic structural diagram of a reflow mechanism of an appearance spraying apparatus for processing electronic products according to the present invention;

fig. 6 is a schematic cross-sectional structural view of a reflow mechanism of an appearance spraying device for processing electronic products according to the present invention.

In the figure: 1. a base plate; 2. a conveyor belt; 3. a mechanical arm; 4. mounting a plate; 5. an atomizing spray head; 6. a reflux mechanism; 601. a gas ejector tube; 602. an air return pipe; 603. a first housing; 604. a second housing; 605. a rotating shaft; 606. a fan blade; 607. a belt pulley; 608. a drive motor; 7. a 180 degree rotary cylinder; 8. a shunt tube; 9. an air outlet; 10. an infrared sensor; 11. a three-way electromagnetic valve; 12. blowing a pipe; 13. an air inlet pipe; 14. an atomizer; 15. a microphone; 16. an alarm; 17. a bell mouth.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-6, an appearance spraying device for processing electronic products comprises a bottom plate 1 and a conveying belt 2 positioned on the bottom plate 1, wherein the upper surface of the bottom plate 1 is fixedly connected with a mechanical arm 3, the mechanical arm 3 is a common three-axis robot, one end of the mechanical arm 3, which is far away from the bottom plate 1, is provided with a mounting plate 4, the mounting plate 4 is provided with an atomizing nozzle 5 for spraying a PCB, the atomizing nozzle 5 is communicated with spraying equipment filled with nano waterproof liquid, the atomizing nozzle 5 is provided with a plurality of nozzles so as to form wide-range spraying, and the mounting plate 4 is provided with a backflow mechanism 6;

wherein, the backflow mechanism 6 comprises an air injection pipe 601 and an air return pipe 602, the air injection pipe 601 and the air return pipe 602 are both arranged through the mounting plate 4, the upper ends of the air injection pipe 601 and the air return pipe 602 are respectively communicated with a first shell 603 and a second shell 604, the first shell 603 and the second shell 604 are arranged through the pipeline, the inner walls of the first shell 603 and the second shell 604 are both rotatably connected with a rotating shaft 605, the positions of the two rotating shafts 605 are not on the axes of the air injection pipe 601 and the air return pipe 602, the side wall of the rotating shaft 605 is fixedly connected with fan blades 606 arranged in a surrounding manner, the two rotating shafts 605 are respectively arranged through the inner walls of the first shell 603 and the second shell 604 and extend to the outside of the first shell 603 and the second shell 604, one ends of the rotating shafts 605 far away from the fan blades 606 are both fixedly connected with belt pulleys 607, the side wall of the second shell 604 is fixedly connected with a driving motor 608, and the output end of the driving motor 608 is fixedly connected with one of the belt pulley 607, two belt pulleys 607 are connected through belt transmission and set up, and return mechanism 6 can drive the coating upwards backward flow to carry out the spraying at no dead angle to the PCB board.

Further, the lower surface of the mounting plate 4 is fixedly connected with the infrared sensor 10, the infrared sensor 10 is used for ranging, thereby detecting out the electronic component protruding on the PCB, the electric connection of the infrared sensor 10 is used for the controller controlling the three-way electromagnetic valve 11, the mounting plate 4 is provided with two three-way electromagnetic valves 11, the two three-way electromagnetic valves 11 are respectively communicated with the air injection pipe 601 and the air return pipe 602, the three-way electromagnetic valve 11 communicated with the air injection pipe 601 is also communicated with the blowpipe 12, the three-way electromagnetic valve 11 communicated with the air return pipe 602 is also communicated with the air inlet pipe 13, when the infrared sensor 10 does not detect the electronic component, the driving motor 608 drives the fan blade 606 to rotate, air enters the second shell 604 from the air inlet, and is blown out from the blowpipe 12, so as to accelerate the air flow rate near the sprayed PCB, and improve the drying speed of the nano waterproof liquid.

Further, arm 3 keeps away from 180 revolving cylinder 7 of one end fixedly connected with of bottom plate 1, and the lower extreme and the 4 fixed connection settings of mounting panel of 180 revolving cylinder 7, this kind of design for drive mounting panel 4 rotatory 180, when carrying out the spraying to the great PCB board of area like this, through the mode with mounting panel 4 is rotatory, make the PCB board pass through atomizer 5 earlier and then adjust the spraying direction by reflux unit 6.

Further, the lower end of the air injection pipe 601 is communicated with the shunt pipe 8, the shunt pipe 8 is provided with the plurality of air outlets 9, and the design is used for expanding the air injection range of the air injection pipe 601, reducing the wind power of the ejected air of the air injection pipe 601 and avoiding the ejected air from blowing away the nanometer waterproof liquid which is not completely evaporated to dryness on the PCB.

Further, the air injection pipe 601 is communicated with the atomizer 14, the atomizer 14 is fixedly connected with the lower surface of the mounting plate 4, and the atomizer 14 is used for re-atomizing the nano waterproof liquid entering the second housing 604 from the air return pipe 602 and then spraying the nano waterproof liquid out from the air injection pipe 601, so that the waste of the nano waterproof liquid is reduced.

Further, the lower surface of mounting panel 4 is provided with microphone 15, and microphone 15 electric connection has signal processor, and signal processor electric connection has alarm 16, and this kind of design utilizes microphone 15 cooperation signal processing to monitor the sound when air blows to PCB board upper element to the stitch that utilizes air current sound to judge the component is in being connected with of PCB board does not have the rosin joint, or the too big condition of solder joint, realizes the detection to the PCB board.

Furthermore, the lower end of the air return pipe 602 is provided with the bell mouth 17, and the air intake of the air return pipe 602 can be increased by arranging the bell mouth 17, so that the nano waterproof liquid sprayed by the atomizing nozzle 5 can move upwards under the driving of air, and the lower surface of the pin of the element on the PCB can be realized.

In the invention, when a user uses the device, a PCB (printed circuit board) which needs to be coated with a nano coating is placed on a conveying belt 2, then the conveying belt 2 and a backflow mechanism 6 are started to operate, and the spraying setting is controlled to spray nano waterproof liquid onto the PCB through an atomizing nozzle 5, in the spraying process, a first shell 603 and a second shell 604 utilize a driving motor 608 to cooperate with a fan blade 606 to drive air to move from an air inlet pipe 13 to a blow pipe 12, when an infrared sensor 10 senses an electronic element protruding on the PCB, two three-way electromagnetic valves 11 are controlled to operate, at the moment, an air return pipe 602 is communicated with the second shell 604, an air inlet pipe 13 is not communicated with the second shell 604, on the other hand, the blow pipe 12 is not communicated with the first shell 603, an air jet pipe 601 is communicated with the second shell 604, at the moment, part of atomized nano waterproof liquid which floats in the air is sprayed on the PCB, and simultaneously, the atomized nano waterproof liquid is driven by the air to move to the backflow pipe 602, the spraying device can move the vaporific nano waterproof liquid from bottom to top, so that the lower surface of a pin of an element on the PCB and the lower surface of a capacitor connected with the PCB through the pin are sprayed, the spraying without dead angles on the PCB is realized, the traditional paint dipping process is replaced, the efficiency of coating the nano coating on the PCB is greatly improved, the using amount of the nano waterproof liquid is reduced by the spraying mode, the volatilization waste during draining in the paint dipping process is particularly eliminated, and the purpose of reducing the production cost is realized.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.