High-pressure cleaning machine for circuit board

Abstract

The utility model relates to a cleaning machine, in particular to a high-pressure cleaning machine for a circuit board. The circuit board high-pressure cleaning machine comprises a base, a sliding rail, a sliding block, a clamping block and the like. The electric sliding rails are symmetrically installed on the upper portion in the base front and back, the sliding blocks are slidably connected to the right portions of the electric sliding rails, the clamping blocks are installed on the sliding blocks, and the two clamping blocks are symmetrically arranged. Compressed air is used as power and a carrier, dry ice cleaning is carried out on the surface of a circuit board, dirt, greasy dirt, residual impurities and the like on the surface of a cleaned object are quickly frozen, and therefore the dirt, the greasy dirt, the residual impurities and the like are condensed, embrittled and stripped, cleaning work is effectively completed, use of solvents is reduced or reduced, cost is reduced, and production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a cleaning machine, in particular to a circuit board high-pressure cleaning machine. Background Art

[0002] Due to the production process and environment of the circuit board, some pollutants will be generated on the surface of the circuit board, such as welding slag, oil stains, splashes, etc. These pollutants will affect the quality and performance of the circuit board on the one hand, and will also have a negative impact on the subsequent welding and assembly of electronic components on the other hand, so they need to be cleaned.

[0003] A Chinese patent with application number CN201720041947.6 discloses a high-pressure water cleaning machine, including a machine platform, a rotatable turntable with vacuum suction holes for placing workpieces to be cleaned is arranged in the machine platform, a rotatable water spray nozzle for spraying high-pressure water for cleaning is arranged on one side of the turntable, and a rotatable air nozzle for spraying high-pressure air for drying is arranged on the other side of the turntable. A water storage tank is arranged in the machine platform, and the water storage tank is connected to a filter through a pipe. The filter is connected to the water inlet of a high-pressure water pump, and the water outlet of the high-pressure water pump is connected to the rotatable water spray nozzle. The utility model is used for cleaning hard The machine can be used to wash workpieces such as circuit boards. Multiple workpieces can be placed on the turntable of the machine at one time. During the washing process, the turntable rotates 360 degrees and can rotate to spray high-pressure water for all-round washing. When the washing is completed, the rotatable air nozzle sprays high-pressure air for all-round drying. The above equipment is fully automated, small in size, rich in functions, and has high cleaning operation efficiency. However, when cleaning oil-based, paint, solvent and other contaminants, it is necessary to add chemical cleaning agents to the cleaning water for cleaning, and it is necessary to wait for the chemical agents to react. The processing time is long and the circuit boards may be exposed to harmful chemicals and produce secondary contaminants.

[0004] In view of this, the utility model provides a circuit board high-pressure cleaning machine which can perform dry ice cleaning on the surface of a circuit board, so that dirt, oil stains, residual impurities, etc. on the surface of the cleaned object can be quickly frozen, thereby condensing, brittle, and peeling off, thereby effectively completing the cleaning work, reducing or lowering the use of solvents, reducing costs, and improving production efficiency. Utility Model Content

[0005] In order to overcome the shortcomings of water cleaning equipment that requires chemical cleaning agents to be added to the cleaning water for cleaning when cleaning oil-based, paint-based and solvent-based dirt, it is necessary to wait for the chemical agents to react, the processing time is long, and the circuit board may be exposed to harmful chemicals and produce secondary dirt. The purpose is to provide a circuit board high-pressure cleaning machine that can perform dry ice cleaning on the surface of the circuit board, so that the dirt, oil stains, residual impurities, etc. on the surface of the cleaned object are quickly frozen, thereby condensing, embrittled, and peeled off, effectively completing the cleaning work, reducing or lowering the use of solvents, reducing costs, and improving production efficiency.

[0006] The technical solution is: a circuit board high-pressure cleaning machine, including a base, a slide rail, a slider, a clamping block, a bracket, a tank body, a connecting frame, a connecting pipe, a nozzle, a solenoid valve and a cylinder. Electric slide rails are symmetrically installed on the upper front and rear of the base, and the right part of the electric slide rail is slidably connected to the slider. Clamping blocks are installed on the slider, and the two clamping blocks are symmetrically arranged. The rear part of the base is fixedly connected to the bracket, and the tank body is arranged in the bracket. A cylinder is installed on the left side of the upper rear part of the base, and a connecting frame is fixedly connected to the movable rod of the cylinder. A solenoid valve is installed at the lower part of the connecting frame, and a connecting pipe is installed on the connecting frame. The solenoid valve is connected to the connecting pipe, and no less than three nozzles are symmetrically installed on the upper and lower sides of the connecting pipe. The lower part of the solenoid valve is connected to the tank body through a pipeline, and dry ice is stored in the tank body.

[0007] Furthermore, a protective cover is included, and the upper part of the base is fixedly connected with the protective cover.

[0008] Furthermore, a hopper is also included, and the hopper is fixedly connected to the front part of the base.

[0009] Furthermore, it also includes flexible roller brush 1, flexible roller brush 2, a motor and gears. Flexible roller brush 1 is installed on the upper left side of the base, and flexible roller brush 2 is installed on the upper left side of the base near the flexible roller brush. Flexible roller brush 1 and flexible roller brush 2 are on the same horizontal line. A motor is installed on the front left side of the protective cover, and gears are fixedly installed on the motor output shaft and the front of flexible roller brush 2, and the two gears are meshed with each other.

[0010] Furthermore, the clamping blocks are all made of flexible materials that cause less friction damage to the circuit board.

[0011] The beneficial effects are as follows: the utility model uses compressed air as the power and carrier to perform dry ice cleaning on the surface of the circuit board, so that the dirt, oil, residual impurities, etc. on the surface of the cleaned object are quickly frozen, thereby condensing, brittle, and peeling off, thereby effectively completing the cleaning work, reducing or lowering the use of solvents, reducing costs, and improving production efficiency.

[0012] The utility model further cleans the circuit board by rolling the first flexible rolling brush and the second flexible rolling brush, thereby preventing the agglomerated impurities remaining under high-pressure flushing from adhering to the circuit board and requiring secondary cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0014] Figure 2 This is a three-dimensional structural schematic diagram of the utility model without the protective cover and the motor.

[0015] Figure 3 It is a three-dimensional structural schematic diagram of the hopper and cleaning assembly of the utility model.

[0016] Figure 4 It is a three-dimensional structural schematic diagram of the cleaning component of the utility model.

[0017] Figure 5 It is a three-dimensional structural schematic diagram of the cleaning component of the utility model.

[0018] The names and serial numbers of the parts in the figure are: 1_base, 2_electric slide rail, 3_slider, 31_clamp block, 4_bracket, 41_tank body, 42_connecting frame, 43_connecting pipe, 44_sprinkler, 45_solenoid valve, 5_cylinder, 6_protective cover, 7_hopper, 8_flexible roller brush one, 9_flexible roller brush two, 10_motor, 11_gear. DETAILED DESCRIPTION

[0019] The utility model is described in detail below in conjunction with the accompanying drawings.

[0020] Embodiment 1: A circuit board high pressure cleaning machine, such as Figure 1-5 As shown, it includes a base 1, a slide rail, a slider 3, a clamping block 31, a bracket 4, a tank body 41, a connecting frame 42, a connecting pipe 43, a nozzle 44, a solenoid valve 45 and a cylinder 5. The electric slide rail 2 is symmetrically installed on the upper part of the base 1. The right part of the electric slide rail 2 is slidably connected with the slider 3. The electric slide rail 2 has a driving device that can drive the slider 3 to move at a set speed. The slider 3 is installed with a clamping block 31, and the two clamping blocks 31 are symmetrically arranged. The clamping blocks 31 are strip-shaped objects with grooves. The grooves are used to place and clamp the circuit board that needs to be cleaned. The rear part of the line base 1 is fixedly connected with the bracket 4, and the bracket 4 is equipped with a tank body 41. There is a certain pressure in the tank body 41. The cylinder 5 is installed on the left side of the upper rear side of the base 1, and the connecting frame 4 is fixedly connected to the movable rod of the cylinder 5 2. A solenoid valve 45 is installed at the lower part of the connecting frame 42, and a connecting pipe 43 is installed on the connecting frame 42. The connecting pipe 43 is a U-shaped pipe, and the pipelines are respectively arranged on the upper and lower sides of the connecting frame 42. When the slider 3 on the electric slide rail 2 drives the circuit board on the clamping block 31 to pass through the connecting pipe 43, the circuit board will pass between the connecting pipes 43 on the upper and lower sides, and the solenoid valve 45 is connected to the connecting pipe 43. The solenoid valve 45 is connected to the tank body 41 and the connecting pipe 43, and can control the on and off thereof. A joint for connecting to an external high-pressure airflow is arranged on the right part of the solenoid valve 45. No less than three nozzles 44 are symmetrically installed on the upper and lower sides of the connecting pipe 43. The nozzles 44 on both sides will blow the high-pressure airflow to the upper and lower sides of the circuit board respectively. The lower part of the solenoid valve 45 is connected to the tank body 41 through a pipeline, and dry ice is stored in the tank body 41.

[0021] Initially, the slider 3 is located at the left position of the electric slide rail 2, and the solenoid valve 45 is connected to an external high-pressure airflow. When it is necessary to clean the pollutants on the surface of the circuit board after welding, such as welding slag, oil stains, and splashes, first, the circuit board to be cleaned is placed flat through the two clamping blocks 31, and the placed circuit board is parallel to the ground. Then, the sliders 3 on the two electric slide rails 2 are controlled to move to the left, driving the circuit board on the clamping block 31 to slowly move to the left. When the left side of the circuit board is close to the nozzle of the left connecting pipe 43, When the pressure is 44, the electromagnetic valve 45 is controlled to work, the channel of the external airflow on the electromagnetic valve 45 is opened, and the high-pressure airflow will be ejected from the connecting pipe 43. The channel between the pipe connected to the tank body 41 on the electromagnetic valve 45 and the connecting pipe 43 is opened. Under the action of the high-pressure airflow, a pressure difference is formed in the electromagnetic valve 45. Under the action of the pressure difference, the dry ice in the tank body 41 flows out of the tank body 41 and is carried to the connecting pipe 43 by the high-pressure air with a faster flow rate, and is ejected from the connecting pipe 43. At this time, the start cylinder 5 extends the movable rod , driving the connecting frame 42 to move rightward, the connecting pipe 43 and the nozzle 44 on the connecting frame 42 move rightward with the connecting frame 42, at this time, the clamping block 31 continues to slide leftward under the drive of the slider 3, and the circuit board on the clamping block 31 passes between the connecting pipes 43 on the upper and lower sides, and the high-pressure airflow carrying dry ice in the nozzle 44 will spray to the upper and lower sides of the circuit board, and the momentum change, sublimation, melting and other energy conversion of the high-speed moving solid dry ice particles will quickly freeze the dirt, oil, residual impurities, etc. on the surface of the cleaned object, thereby The condensation and embrittlement are removed and peeled off with the impact of the air flow. When the nozzle 44 moves to the right and the clamping block 31 moves to the left, the surface of the circuit board is completely cleaned, and the solenoid valve 45 is controlled to be closed, and the high-pressure airflow in the nozzle 44 stops blowing out. Then the cylinder 5 is controlled to retract the movable rod, driving the connecting frame 42 and the components mounted thereon to slide to the left and reset. The circuit board is moved to the left part of the electric slide rail 2 under the drive of the slider 3, the electric slide rail 2 is closed, the slider 3 stops moving, and finally the circuit board is removed to complete the cleaning work.

[0022] Embodiment 2: Based on embodiment 1, Figure 1 As shown, a protective cover 6 is also included. The upper part of the base 1 is fixedly connected with the protective cover 6 to block the solid dirt that impacts and prevent the dirt from splashing around during cleaning.

[0023] like Figure 3 As shown, a hopper 7 is also included. The front part of the base 1 is fixedly connected with the hopper 7 for centrally collecting the cleaned impurities.

[0024] like Figure 2 and Figure 5As shown, it also includes a flexible roller brush 1 8, a flexible roller brush 2 9, a motor 10 and a gear 11. A flexible roller brush 1 8 is installed on the upper left side of the base 1, and a flexible roller brush 2 9 is installed on the upper left side of the base 1 near the flexible roller brush 1 8. The flexible roller brush 1 8 and the flexible roller brush 2 9 are on the same horizontal line. A motor 10 providing driving force is installed on the front left side of the protective cover 6. Gears 11 are fixedly installed on the output shaft of the motor 10 and the front of the flexible roller brush 2 9, and the two gears 11 are meshed with each other. When the flexible roller brush 2 9 rolls, the flexible roller brush 1 8 will rotate synchronously in the opposite direction, and the circuit board will pass between the flexible roller brush 2 9 and the flexible roller brush 1 8 driven by the electric slide rail 2, and the two rotate to further clean the surface of the circuit board.

[0025] When the cleaning work is in progress, the protective cover 6 located at the cleaning station can effectively block the solid dirt that is impacted, and effectively prevent the cleaned solid impurities from splashing around under the impact of the high-pressure airflow. At the same time, the cleaned impurities will fall into the hopper 7 below. When the circuit board is cleaned and moves to the right, the motor 10 is started. The motor 10 drives the gear 11 to rotate. Under the meshing of the two gears 11, the flexible roller brush 2 9 rotates synchronously and in the opposite direction with the motor 10. When the circuit board moves to the right, the upper and lower surfaces will contact the flexible roller brush 1 8 and the flexible roller brush 2 9 respectively. Under the rolling of the flexible roller brush 1 8 and the flexible roller brush 2 9, the circuit board is further cleaned to prevent the impurities remaining under the high-pressure flushing from adhering to the circuit board, which requires secondary cleaning. When the circuit board passes between the flexible roller brush 1 8 and the flexible roller brush 2 9, after the surface of the circuit board is cleaned, the motor 10 is stopped. When the circuit board moves to the unloading position on the left side of the equipment, the control slider 3 stops and the cleaned circuit board is removed.

[0026] In a preferred embodiment, the clamping blocks 31 are all made of flexible materials that cause less frictional damage to the circuit board, thereby reducing damage to the surface of the circuit board installed in the clamping blocks 31 during cleaning.

[0027] Although the present invention has been described with reference to exemplary embodiments, it should be understood that the present invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all modifications and equivalent structures and functions.

Claims

1. A circuit board high-pressure cleaning machine, comprising a base (1), a slide rail, a slider (3) and a clamping block (31), wherein an electric slide rail (2) is symmetrically installed in the upper part of the base (1) in the front and rear directions, the right part of the electric slide rail (2) is slidably connected to the slider (3), and the slider (3) is installed with a clamping block (31), and the two clamping blocks (31) are symmetrically arranged; It is characterized in that The invention also comprises a bracket (4), a tank body (41), a connecting frame (42), a connecting pipe (43), a nozzle (44), a solenoid valve (45) and a cylinder (5). The bracket (4) is fixedly connected to the rear of the base (1), the tank body (41) is arranged in the bracket (4), the cylinder (5) is installed on the left side of the upper rear of the base (1), the connecting frame (42) is fixedly connected to the movable rod of the cylinder (5), the solenoid valve (45) is installed at the lower part of the connecting frame (42), the connecting pipe (43) is installed on the connecting frame (42), the solenoid valve (45) is connected to the connecting pipe (43), at least three nozzles (44) are symmetrically installed on the upper and lower sides of the connecting pipe (43), the lower part of the solenoid valve (45) is connected to the tank body (41) through a pipeline, and dry ice is stored in the tank body (41).

2. A circuit board high pressure cleaning machine according to claim 1, characterized in that: It also includes a protective cover (6), and the upper part of the base (1) is fixedly connected with the protective cover (6).

3. A circuit board high pressure cleaning machine according to claim 2, characterized in that: It also includes a hopper (7), and the hopper (7) is fixedly connected to the front portion of the base (1).

4. A circuit board high pressure cleaning machine according to claim 3, characterized in that: The utility model also comprises a flexible roller brush 1 (8), a flexible roller brush 2 (9), a motor (10) and a gear (11). The flexible roller brush 1 (8) is installed on the upper left side of the base (1). The flexible roller brush 2 (9) is installed on the upper left side of the base (1) near the flexible roller brush 1 (8). The flexible roller brush 1 (8) and the flexible roller brush 2 (9) are located on the same horizontal line. The motor (10) is installed on the front left side of the protective cover (6). The output shaft of the motor (10) and the front of the flexible roller brush 2 (9) are fixedly installed with a gear (11), and the two gears (11) are meshed with each other.

5. A circuit board high pressure cleaning machine according to claim 4, characterized in that: The clamping blocks (31) are all made of flexible materials that cause less friction damage to the circuit board.

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