Cleaning device for surface mounting of electronic component

Abstract

The utility model discloses a cleaning device for surface mounting of electronic components, which comprises a processing table and a pair of transmission belts fixedly mounted on two transverse sides of the processing table, and a cleaning mechanism is arranged on the processing table; the height of the cleaning mechanism is larger than that of the conveying belt. The cleaning mechanism comprises a first mounting groove and a second mounting groove which are symmetrically and fixedly formed in the two transverse sides of the machining table. A motor is arranged on the processing table at one longitudinal end of the first mounting groove; by arranging the cleaning mechanism, auxiliary cleaning is carried out on the surface of the PCB, so that residues on the surface of the PCB are greatly reduced, the cleaning efficiency of electronic components is remarkably improved, the production period is shortened, the production cost is reduced, meanwhile, the problems of short circuit, corrosion and the like caused by pollutants in the use process of the PCB are solved, and the service life of the PCB is prolonged. The technical problem that in the prior art, dust and stains adhere to the surfaces of a PCB and an electronic component in the transportation process, so that welding connection is unstable or pseudo soldering occurs is solved.

Description

Technical Field

[0001] This utility model belongs to the field of surface mount equipment for electronic components, and relates to an auxiliary device, specifically a cleaning device for surface mount of electronic components. Background Technology

[0002] SMT (Surface Mount Technology) is currently the most popular technology and process in the electronics assembly industry. It is a circuit assembly technology that mounts leadless or short-lead surface mount components (SMC / SMD, also known as chip components) onto the surface of a printed circuit board (PCB) or other substrate, and then assembles them using methods such as reflow soldering or dip soldering. The advent of SMT technology has enabled the automated production of electronic components, greatly improving production efficiency and yield. At the same time, SMT technology allows electronic components to be directly mounted on the PCB, reducing the wiring between components and significantly reducing their size and weight, making miniaturization and weight reduction of electronic devices possible.

[0003] During the production, transportation, and packaging process, some processing dust and dirt may adhere to the surface of PCB circuit boards. If this is not cleaned before mounting, it may affect the solder connection with electronic components, leading to unstable connections and breakage.

[0004] Therefore, this application provides a cleaning device for surface mounting of electronic components to solve the above-mentioned problems. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a cleaning device for surface mounting of electronic components, so as to solve the technical problem that dust and dirt adhere to the surface of PCB and electronic components during transportation, resulting in unstable soldering or cold solder joints.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A cleaning device for surface mounting of electronic components includes a processing table and a pair of conveyor belts fixedly installed on both sides of the processing table. A cleaning mechanism is provided on the processing table; the height of the cleaning mechanism is greater than the height of the conveyor belts.

[0008] The cleaning mechanism includes a first mounting slot and a second mounting slot symmetrically and fixedly arranged on both sides of the processing table in the transverse direction; a motor is arranged on the processing table at one end of the longitudinal direction of the first mounting slot; a ball screw pair is rotatably installed in the first mounting slot, one end of the ball screw pair passing through the first mounting slot and fixedly connected to the output shaft of the motor; a mounting plate is fixed on the nut of the ball screw pair; a brush strip is arranged at the bottom of the mounting plate, and nozzles are arranged on the mounting plates located on both sides of the longitudinal direction of the brush strip, and the nozzles are connected to the cleaning liquid supply equipment;

[0009] A waste liquid transfer tank is provided in the middle of the processing table, and limiting cavities are provided on both sides of the waste liquid transfer tank. The depth of the limiting cavities is greater than the height of the conveyor belt.

[0010] This utility model also includes the following technical features:

[0011] A slide rod is fixedly installed in the second mounting groove, and one end of the mounting plate away from the ball screw pair is slidably mounted on the slide rod.

[0012] A dryer is installed at the longitudinal end of the processing table.

[0013] It also includes a fixing mechanism, which includes a cylinder and an air pump fixedly installed in the waste liquid transfer tank. The top of the telescopic end of the cylinder is provided with a suction cup, and the suction cup is connected to the air pump through a pipe.

[0014] Compared with the prior art, the beneficial technical effects of this utility model are:

[0015] In this invention, by setting up a cleaning mechanism to assist in cleaning the surface of the PCB circuit board, the residue on the PCB circuit board surface is greatly reduced, significantly improving the cleaning efficiency of electronic components, shortening the production cycle, reducing production costs, and also reducing problems such as short circuits and corrosion caused by contaminants during PCB use. It also solves the technical problem in the prior art where dust and dirt adhere to the surface of PCB and electronic components during transportation, leading to unstable soldering connections or poor soldering. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another angle;

[0018] Figure 3 This is a schematic diagram of the longitudinal cross-sectional structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the transverse cross-sectional structure of this utility model.

[0020] The meanings of the labels in the diagram are as follows: 1-processing table, 2-conveyor belt, 3-cleaning mechanism, 4-fixing mechanism; 11-waste liquid transfer tank, 12-limiting cavity.

[0021] 31-First mounting slot, 32-Second mounting slot, 33-Ball screw pair, 34-Motor, 35-Slide rod, 36-Mounting plate, 37-Brush strip, 38-Nozzle, 39-Dryer;

[0022] 41-Cylinder, 42-Suction cup, 43-Air pump.

[0023] The specific content of this utility model will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, all components in this utility model are components known in the art.

[0025] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0026] This utility model provides a cleaning device for surface mounting of electronic components, including a processing table 1 and a pair of conveyor belts 2 fixedly installed on both sides of the processing table 1. A cleaning mechanism 3 is provided on the processing table 1; the height of the cleaning mechanism 3 is greater than the height of the conveyor belts 2.

[0027] The cleaning mechanism 3 includes a first mounting groove 31 and a second mounting groove 32 symmetrically and fixedly arranged on both sides of the processing table 1; a motor 34 is arranged on the processing table 1 at one end of the longitudinal direction of the first mounting groove 31; a ball screw pair 33 is rotatably installed in the first mounting groove 31, one end of the ball screw pair 33 passes through the first mounting groove 31 and is fixedly connected to the output shaft of the motor 34; a mounting plate 36 is fixed on the nut of the ball screw pair 33; a brush strip 37 is arranged at the bottom of the mounting plate 36, and a nozzle 38 is arranged on the mounting plate 36 on both sides of the longitudinal direction of the brush strip 37, and the nozzle 38 is connected to the cleaning liquid supply equipment;

[0028] A waste liquid transfer tank 11 is provided in the middle of the processing table 1. Limiting cavities 12 are provided on both sides of the waste liquid transfer tank 11. The depth of the limiting cavity 12 is greater than the height of the conveyor belt 2.

[0029] In the above technical solution, during use, the processing table 1 is installed at the feed inlet of the mounting machine, and the PCB circuit board is placed on the conveyor belt 2. The conveyor belt 2 transports the PCB circuit board between the first mounting slot 31 and the second mounting slot 32. Then, the motor 34 is started, and the motor 34 drives the screw of the ball screw pair 33 to rotate. The ball screw pair 33 drives the mounting plate 36 to move back and forth on the PCB circuit board. The back and forth moving mounting plate 36 drives the brush strip 37 at the bottom to brush the surface of the PCB circuit board. At the same time, the nozzle 38 sprays cleaning fluid onto the surface of the PCB circuit board for auxiliary cleaning, which greatly reduces the residue on the surface of the PCB circuit board and ensures the mounting quality.

[0030] The nozzle 38 is connected to a dedicated cleaning fluid supply device via a delivery pipe. The fluid is supplied by a water pump to ensure the safety of PCB circuit board cleaning and avoid short circuits. The cleaning fluid outlet is discharged through the waste fluid transfer tank 11. The height of the limiting cavity 12 is higher than that of the conveyor belt 2. The conveyor belt 2 is fixedly installed on the limiting cavity 12. The brush strip 37 is adapted to the limiting cavity 12. The PCB circuit board is cleaned when it passes through the limiting cavity 12, which facilitates subsequent mounting machine processing.

[0031] By setting up cleaning mechanism 3, the surface of the PCB circuit board is cleaned in an auxiliary manner, which greatly reduces the residue on the surface of the PCB circuit board, significantly improves the cleaning efficiency of electronic components, shortens the production cycle, reduces production costs, and also reduces short circuits and corrosion caused by contaminants during the use of PCB. It also solves the technical problem in the prior art where dust and dirt adhere to the surface of PCB and electronic components during transportation, causing unstable soldering connections or cold solder joints.

[0032] A slide rod 35 is fixedly installed in the second mounting slot 32, and one end of the mounting plate 36 away from the ball screw pair 33 is slidably set on the slide rod 35.

[0033] In the above technical solution, when the ball screw pair 33 drives the mounting plate 36 to move on the first mounting groove 31, the second mounting groove 32 supports the other end of the mounting plate 36, and at the same time, the slide rod 35 limits the other end of the mounting plate 36 to prevent the mounting plate 36 from shifting and ensure stable operation of the equipment.

[0034] A dryer 39 is installed at the longitudinal end of the processing table 1.

[0035] In the above technical solution, when in use, the air dryer 39 is installed on the processing table 1 near the feed port of the placement machine. After the PCB circuit board is cleaned, it continues to be conveyed toward the placement machine via the conveyor belt 2. When passing under the air dryer 39, the air dryer 39 blows air onto the surface of the PCB circuit board to accelerate the drying of the PCB circuit board and facilitate subsequent processing.

[0036] It also includes a fixing mechanism 4, which includes a cylinder 41 and an air pump 43 fixedly installed in the waste liquid transfer tank 11. A suction cup 42 is provided on the top of the telescopic end of the cylinder 41, and the suction cup 42 is connected to the air pump 43 through a pipe.

[0037] In the above technical solution, during use, when the PCB circuit board is transported to the first mounting slot 31 by the conveyor belt 2, the cylinder 41 is activated. The cylinder 41 pushes the suction cup 42 upward, so that the surface of the suction cup 42 contacts the bottom of the PCB circuit board. Then, the air pump 43 is activated, and the air pump 43 draws suction through the pipe, creating negative pressure on the suction cup 42 to adhere to the bottom of the PCB circuit board, thereby fixing the PCB circuit board in place for easy cleaning. After processing, the air pump 43 exhausts air and releases the PCB circuit board. This avoids the PCB circuit board being moved by the brush strip 37 when cleaning the surface of the PCB circuit board, which would cause unstable cleaning.

Claims

1. A cleaning device for surface mounting of electronic components, characterized in that, It includes a processing table (1) and a pair of conveyor belts (2) fixedly installed on both sides of the processing table (1). A cleaning mechanism (3) is provided on the processing table (1). The height of the cleaning mechanism (3) is greater than the height of the conveyor belts (2). The cleaning mechanism (3) includes a first mounting groove (31) and a second mounting groove (32) symmetrically and fixedly arranged on both sides of the processing table (1) in the transverse direction; a motor (34) is arranged on the processing table (1) located at one end of the longitudinal direction of the first mounting groove (31); a ball screw pair (33) is rotatably installed in the first mounting groove (31), one end of the ball screw pair (33) passes through the first mounting groove (31) and is fixedly connected to the output shaft of the motor (34); a mounting plate (36) is fixed on the nut of the ball screw pair (33); a brush strip (37) is arranged at the bottom of the mounting plate (36), and a nozzle (38) is arranged on the mounting plate (36) located on both sides of the longitudinal direction of the brush strip (37), and the nozzle (38) is connected to the washing liquid supply equipment; The processing table (1) is provided with a waste liquid transfer tank (11) in the middle. The waste liquid transfer tank (11) is provided with limiting cavities (12) on both sides in the lateral direction. The depth of the limiting cavity (12) is greater than the height of the conveyor belt (2).

2. The cleaning device for surface mounting of electronic components as described in claim 1, characterized in that, A slide rod (35) is fixedly installed in the second mounting groove (32), and one end of the mounting plate (36) away from the ball screw pair (33) is slidably set on the slide rod (35).

3. The cleaning device for surface mounting of electronic components as described in claim 1, characterized in that, A dryer (39) is provided at the longitudinal end of the processing table (1).

4. The cleaning device for surface mounting of electronic components as described in claim 1, characterized in that, It also includes a fixing mechanism (4), which includes a cylinder (41) and an air pump (43) fixedly installed in the waste liquid transfer tank (11). A suction cup (42) is provided on the top of the telescopic end of the cylinder (41), and the suction cup (42) and the air pump (43) are connected through a pipe.

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