Atmospheric plasma cleaning machine

Abstract

An atmospheric plasma cleaning machine comprises a machine table, a moving assembly arranged on the machine table, a mounting assembly arranged on one side of the moving assembly, and a cleaning assembly arranged at the output end of the moving assembly. The cleaning assembly comprises a cleaning machine and at least two detectors fixed on both sides of the cleaning machine respectively. The two detectors and the nozzle are in the same plane, and the cleaning machine moves back and forth under the driving of the moving assembly. The atmospheric plasma cleaning machine measures the distance between the nozzle and the PCB board through the detector, so as to control the Y-axis electric sliding rail to rise and fall through the PLC control program, so that the nozzle and the PCB board always maintain the best cleaning distance, which can ensure the cleaning quality and avoid the collision between the nozzle and the components on the surface of the PCB board during the moving cleaning process, so as to cause the damage or falling of the components.

Description

Technical Field

[0001] This utility model relates to the field of circuit board cleaning technology, and in particular to an atmospheric plasma cleaner. Background Technology

[0002] With the continuous development of technology, display screen technology has developed rapidly, and displays are widely used in various electronic devices. However, during production and transportation, display screen modules may accumulate dust, fingerprints, and other dirt, affecting subsequent production processes and leading to a decrease in display effect and service life. Therefore, there is a need for a device capable of cleaning display screen modules. For example, Chinese Patent CN202510308092.8 discloses a plasma cleaner for semiconductor processing, which includes a main body component, including a main unit, a connecting sleeve fixed to the bottom of the main unit, an insulating sleeve at the bottom of the connecting sleeve, an inner sleeve sleeved outside the insulating sleeve, an outer sleeve sleeved outside the inner sleeve, and a nozzle at the bottom of the outer sleeve; a fixing component, disposed inside the outer sleeve, including a compression ring fixed to the inner wall of the outer sleeve, a compression column at the bottom of the inner sleeve, an installation sleeve fixed inside the outer sleeve, a locking block inside the installation sleeve, and a fixing sleeve fixed to the bottom of the main unit. This cleaning machine can use plasma to treat the surface of circuit boards. However, in assembly line production, the height of the nozzle needs to be controlled by inputting a PLC program to avoid collision between the nozzle and the components on the surface of the circuit board. Thus, when changing lines, different specifications of circuit boards require different PLC programs to control the height path of the nozzle, which increases the time required for manual programming and greatly reduces production efficiency. Summary of the Invention

[0003] In view of this, the present invention provides an atmospheric plasma cleaning machine to solve the above problems.

[0004] An atmospheric plasma cleaner includes a platform, a moving component mounted on the platform, a support component mounted on one side of the moving component, and a cleaning component mounted at the output end of the moving component. The cleaning component includes a cleaning machine mounted at the output end of the moving component and at least two detectors fixedly mounted on both sides of the cleaning machine. The output end of the cleaning machine is a nozzle, and the two detectors are coplanar with the nozzle. The cleaning machine reciprocates under the drive of the moving component to perform cleaning.

[0005] Furthermore, the moving component is a two-axis moving system, which includes an X-axis electric slide rail and a Y-axis electric slide rail disposed at the output end of the X-axis electric slide rail.

[0006] Furthermore, the erection assembly includes a motor disposed within the machine base, a rotating shaft disposed on one side of the motor, two hand crank screws respectively disposed on both sides of the rotating shaft, two guide rods respectively disposed on both sides of the two hand crank screws, two support plates respectively disposed on the guide rods, and two conveyor belts respectively disposed on the opposite sidewalls of the two support plates.

[0007] Furthermore, the output end of the motor is connected to one end of the rotating shaft via a belt, and at least two drive wheels are fixedly mounted on the rotating shaft, which mesh with the conveyor belt.

[0008] Furthermore, one of the support plates is fixedly mounted on the inner side wall of the machine tool, and the other support plate is movably mounted on the two guide rods via at least two connecting plates, and the two connecting plates are respectively screwed to the two hand crank screws.

[0009] Compared with existing technologies, the atmospheric plasma cleaner provided by this utility model measures the distance between the nozzle and the PCB board using the detector, and then uses a PLC control program to control the Y-axis electric slide rail to lift and lower, ensuring that the nozzle and the PCB board always maintain the optimal cleaning distance. This guarantees cleaning quality while preventing the nozzle from colliding with components on the PCB board surface during cleaning, thus avoiding damage or detachment of components. Furthermore, the atmospheric plasma cleaner eliminates the need to adjust the PLC program to control the nozzle's movement path when changing PCB boards of different specifications, significantly reducing the time spent on manual programming, greatly improving production efficiency, and lowering labor costs. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the atmospheric plasma cleaner provided by this utility model.

[0011] Figure 2 for Figure 1 An exploded view of an atmospheric plasma cleaner.

[0012] Figure 3 for Figure 1 A schematic diagram of the mounting components of an atmospheric plasma cleaner. Detailed Implementation

[0013] The specific embodiments of this utility model are described in further detail below. It should be understood that the description of the embodiments of this utility model herein is not intended to limit the scope of protection of this utility model.

[0014] like Figure 1The diagram shows the structure of the atmospheric plasma cleaner provided by this utility model. The atmospheric plasma cleaner includes a base 10, a moving component 20 mounted on the base 10, a support component 30 mounted on one side of the moving component 20, and a cleaning component 40 mounted at the output end of the moving component 20. It is conceivable that the atmospheric plasma cleaner also includes other functional modules, such as a power module and a screw module, which are technologies known to those skilled in the art and will not be described in detail here.

[0015] The machine base 10 is used to support various components so that they can cooperate in various ways to complete the cleaning operation of the PCB board 50.

[0016] Please refer to the following: Figure 2 and Figure 3 The moving component 20 is a two-axis moving system, which includes an X-axis electric slide rail 21 and a Y-axis electric slide rail 22 disposed at the output end of the X-axis electric slide rail 21.

[0017] The working principle of the X and Y axis electric slide rails 21 and 22 is that the motor drives the movement speed and path, and the cleaning component 40 moves by being driven by the X and Y axis electric slide rails 21 and 22, thereby cleaning the PCB board 50 in all directions.

[0018] The mounting assembly 30 includes a motor 31 disposed within the machine base 10, a rotating shaft 32 disposed on one side of the motor 31, two hand crank screws 33 respectively disposed on both sides of the rotating shaft 32, two guide rods 34 respectively disposed on both sides of the two hand crank screws 33, two support plates 35 respectively disposed on the guide rods 34, and two conveyor belts 36 respectively disposed on the opposite side walls of the two support plates 35.

[0019] The output end of the motor 31 is connected to one end of the rotating shaft 32 via a belt, thereby enabling the motor 31 to drive and control the rotation of the rotating shaft 32. At least two drive wheels 37 are fixedly mounted on the rotating shaft 32, each corresponding to one of the two support plates 35. At least four driven wheels 38 are mounted on each support plate 35. The conveyor belt 36 passes around the drive wheels 37 and the four driven wheels. Driven by the motor 31, the rotation of the drive wheels 37 causes the conveyor belt 36 to move, allowing the PCB board 50 to be placed on the two conveyor belts 36. The PCB board 50 then moves along with the conveyor belts 36 and is cleaned by the cleaning assembly 40.

[0020] One support plate 35 is fixedly mounted on the inner wall of the machine base 10, and the other support plate 35 is movably mounted on the two guide rods 34 via at least two connecting plates 39, with the two connecting plates 39 respectively screwed to the two hand-cranked screws 33. Both ends of the hand-cranked screw 33 are rotatably mounted on the machine base 10 via bearings or other rotating components. A handwheel is provided on one end protruding from the machine base 10 for easy operation, and the other end is screwed to the connecting plate 38. One end of the guide rod 34 is fixedly mounted on the machine base 10, and the other end is slidably connected to the connecting plate 38, serving a guiding function. By rotating the two hand-cranked screws 33, the distance between the two support plates 35 can be changed, allowing different specifications of PCB boards 50 to be placed on the two conveyor belts 36, thereby improving the applicability of the atmospheric plasma cleaner. In addition, a synchronizing wheel is provided at a corresponding position of the two hand crank screws 33. The two synchronizing wheels are connected by a belt, so that when one hand crank screw 33 is cranked and rotated, the other hand crank screw 33 is driven to rotate, so as to ensure the synchronicity of the rotation of the two hand crank screws 33 and ensure that the two connecting plates 39 can move together.

[0021] The cleaning assembly 40 includes a cleaning machine 41 disposed at the output end of the moving assembly 20, and at least two detectors 42 respectively fixedly disposed on both sides of the cleaning machine 41.

[0022] The cleaning machine 41 is a plasma cleaning machine, which is a device that uses plasma (the fourth state of matter) to clean the surface of materials. The output end of the cleaning machine 41 is a nozzle 43, which sprays plasma to clean the PCB board 50. The cleaning machine 41 itself is existing technology, and its internal structure and working principle will not be described in detail.

[0023] The two detectors 42 and the nozzle 43 are in the same plane. The arrangement direction of the two detectors 42 is parallel to the moving direction of the X-axis electric slide rail 21. The cleaning machine 41 moves back and forth for cleaning under the drive of the X-axis electric slide rail 21, and its height is adjusted under the drive of the Y-axis electric slide rail 22.

[0024] The detector 42 is a laser rangefinder. It uses a laser beam emitter to emit laser pulses towards the target, receives the reflected signals, and calculates the distance by measuring the time from emission to reception of the laser beam using a timer. Thus, the detector 42 can monitor the height of components on the PCB board 50 in real time and calculate the distance between the nozzle 43 and the components on the PCB board 50. The PLC control program then controls the Y-axis electric slide rail 22 to raise and lower, ensuring that the nozzle 43 maintains a constant distance from the PCB board 50. This ensures cleaning quality while preventing the nozzle 43 from colliding with components on the PCB board 50 surface during cleaning, thus avoiding damage or detachment of components. Furthermore, the atmospheric plasma cleaner eliminates the need to adjust the program to control the movement path of the nozzle 43 when changing to different sizes of PCB boards 50, significantly reducing the time spent on manual programming, greatly improving production efficiency, and lowering labor costs. It should be noted that the width of the nozzle 43 is smaller than the distance between two adjacent components on the PCB board 50, and during the plasma cleaning operation, the distance between the nozzle 43 and the PCB board 50 is usually between 10mm and 20mm, which is the optimal cleaning distance to ensure a balance between cleaning effect and production efficiency.

[0025] The working principle of the atmospheric plasma cleaner for cleaning the PCB board 50 is explained below: The two ends of the PCB board 50 are placed on two conveyor belts 36 for transport. After transporting the PCB board 50 a certain distance, the motor 31 stops driving. The X-axis electric slide rail 21 drives and moves the cleaner 41, and with the assistance of the detector 42, drives the Y-axis electric slide rail 22 to control the distance between the nozzle 43 and the PCB board 50, ensuring the optimal cleaning distance. The nozzle 43 sprays plasma for cleaning, moving from one side of the PCB board 50 to the other under the drive of the X-axis electric slide rail 21. When the detector 42 detects the height position of the components, and the nozzle 43 is about to move to that position, the Y-axis electric slide rail 22 drives and lifts the nozzle 43. Then, under the detection of the detector 42, when the nozzle 43 passes the component driven by the X-axis electric slide rail 21, the Y-axis electric slide rail 22 drives and lowers the nozzle 43, thus maintaining the optimal cleaning distance between the nozzle 43 and the PCB board 50. After the cleaning machine 41 moves from one side of the PCB board 50 to the other, the motor 31 starts to operate, transporting the PCB board 50 a certain distance before stopping, ready for the cleaning machine 41 to perform the next round of cleaning.

[0026] The operation of the moving component 20 and the motor 31 is controlled by the PLC control program. The PLC control program includes the setting of variable parameters and fixed parameters, as well as mathematical calculation methods and formulas. The specific calculation methods and formulas can be understood by those skilled in the art who know the working principle of the present invention. Therefore, these mathematical calculation methods and formulas should be considered existing technology.

[0027] Compared with existing technologies, the atmospheric plasma cleaner provided by this utility model uses the detector 42 to measure the distance between the nozzle 33 and the PCB board 50, and then uses a PLC control program to control the Y-axis electric slide rail 22 to raise and lower, so that the nozzle 43 and the PCB board 50 always maintain the optimal cleaning distance. This ensures cleaning quality while preventing the nozzle 43 from colliding with components on the surface of the PCB board 50 during the cleaning process, thus avoiding damage or detachment of components. Furthermore, the atmospheric plasma cleaner does not require adjusting the PLC program to control the movement path of the nozzle 43 when changing to different specifications of the PCB board 50, reducing a significant amount of time spent on manual programming, greatly improving production efficiency, and reducing labor costs.

[0028] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Any modifications, equivalent substitutions or improvements within the spirit of the present utility model are covered within the scope of the claims of the present utility model.

Claims

1. An atmospheric plasma cleaner, characterized in that: The atmospheric plasma cleaner includes a machine base, a moving component mounted on the machine base, a support component mounted on one side of the moving component, and a cleaning component mounted at the output end of the moving component. The cleaning component includes a cleaning machine mounted at the output end of the moving component and at least two detectors fixedly mounted on both sides of the cleaning machine. The output end of the cleaning machine is a nozzle, and the two detectors are in the same plane as the nozzle. The cleaning machine performs reciprocating cleaning under the drive of the moving component.

2. The atmospheric plasma cleaner according to claim 1, characterized in that: The moving component is a two-axis moving system, which includes an X-axis electric slide rail and a Y-axis electric slide rail disposed at the output end of the X-axis electric slide rail.

3. The atmospheric plasma cleaner according to claim 1, characterized in that: The mounting assembly includes a motor installed inside the machine base, a rotating shaft installed on one side of the motor, two hand crank screws installed on both sides of the rotating shaft, two guide rods installed on both sides of the two hand crank screws, two support plates installed on the guide rods, and two conveyor belts installed on the opposite side walls of the two support plates.

4. The atmospheric plasma cleaner according to claim 3, characterized in that: The output end of the motor is connected to one end of the rotating shaft via a belt. At least two drive wheels are fixedly installed on the rotating shaft, and the drive wheels mesh with the conveyor belt.

5. The atmospheric plasma cleaner according to claim 3, characterized in that: One of the support plates is fixedly mounted on the inner side wall of the machine tool, and the other support plate is movably mounted on the two guide rods via at least two connecting plates, and the two connecting plates are respectively screwed to the two hand crank screws.

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