Crystal oscillator pneumatic cleaning device and cleaning method

Abstract

The application discloses a kind of crystal oscillator pneumatic cleaning device and cleaning method, including shell assembly, cleaning assembly, water supply component and gas supply component, the cleaning assembly, the water supply component and the gas supply component are all arranged in the shell assembly, the water supply component and the gas supply component are connected with the water supply and gas supply end of the cleaning assembly. Mainly solve the problem that the crystal oscillator in the prior art cannot be cleaned by ultrasonic wave, the safety of solvent cleaning solution is poor, the efficiency of manual cleaning is low, and the problem of not clean by hand. The application has the advantages of convenient operation, safe use, high cleaning efficiency, good cleaning quality and the like, and has high practical value and popularization value in the field of crystal oscillator production.

Description

Technical Field

[0001] This invention relates to the field of crystal oscillator manufacturing, and more particularly to a pneumatic cleaning device and cleaning method for crystal oscillators. Background Technology

[0002] With the development of crystal oscillator manufacturing technology, existing crystal oscillators consist of a crystal, a printed circuit board, components, a base, and a housing. The crystal, components, and circuit board are soldered onto the printed circuit board using solder. Residual flux and other waste products formed after soldering need to be removed to meet the quality and reliability requirements of the product.

[0003] Currently, many small and medium-sized enterprises use manual cleaning for crystal oscillator production. Crystal oscillators have various sizes and specifications, small volume, small components on printed circuit boards, and difficulties in manual cleaning operations, which affect the reliability of crystal oscillators. Summary of the Invention

[0004] The purpose of this invention is to provide a pneumatic cleaning device and method for crystal oscillators. It mainly addresses the problems in existing technologies where crystal oscillators cannot be cleaned using ultrasonic waves, electrical cleaning with solvent-based cleaning solutions is unsafe, manual cleaning is inefficient, and manual cleaning is often incomplete.

[0005] To achieve the above objectives, the present invention is implemented according to the following technical solution:

[0006] The present invention provides a pneumatic cleaning device for a crystal oscillator, comprising a housing assembly, a cleaning assembly, a water supply assembly, and an air supply assembly. The cleaning assembly, the water supply assembly, and the air supply assembly are all disposed within the housing assembly, and the water supply assembly and the air supply assembly are both connected to the water supply and air supply terminals of the cleaning assembly.

[0007] The outer casing assembly includes an equipment cabinet, a timer, a control switch, a cleaning door, a cleaning chamber rear cover, and an equipment cabinet rear cover. The cleaning component, the water supply component, and the air supply component are disposed inside the equipment cabinet. The timer and the control switch are connected to the control terminals of the water supply component and the air supply component. The timer and the control switch are both disposed on the front face of the equipment cabinet. The cleaning door is disposed on the front face of the equipment cabinet and connects to the cleaning component disposed inside the equipment cabinet. The cleaning chamber rear cover and the equipment cabinet rear cover are disposed on the side of the equipment cabinet.

[0008] The cleaning assembly includes a cleaning chamber, an exhaust pipe, a cleaning fluid spray head, a screen clamp, and a screen. The cleaning chamber is fixedly installed inside the equipment cabinet. The exhaust end of the cleaning chamber is connected to one end of the exhaust pipe, and the other end of the exhaust pipe extends outside the equipment cabinet. The screen is fixedly installed inside the cleaning chamber by the screen clamp. The cleaning fluid spray head is installed inside the cleaning chamber and located above the screen. A crystal oscillator is placed on the screen. The cleaning fluid spray head is connected to the water supply assembly and the air supply assembly. The drain end of the equipment cabinet is connected to the water inlet end of the water supply assembly.

[0009] The water supply assembly includes a filter, a pneumatic pump, and a storage tank. The inlet of the storage tank is connected to the outlet of the equipment cabinet, the outlet of the storage tank is connected to the inlet of the pneumatic pump, the outlet of the pneumatic pump is connected to the inlet of the filter, the outlet of the filter is connected to the cleaning fluid spray head, and the control terminal of the pneumatic pump is connected to the control switch.

[0010] The air supply assembly includes an internal air passage, a compressed air inlet, and an air control valve. The compressed air inlet is located at the air inlet end of the air control valve and is connected to the exhaust end of the compressed air equipment. The exhaust end of the air control valve is connected to one end of the internal air passage, and the other end of the internal air passage is connected to the cleaning chamber.

[0011] The cleaning method of the crystal oscillator pneumatic cleaning device of the present invention includes the following steps:

[0012] S1: Install the crystal oscillator on the fixture and place the fixture on the mesh plate in the cleaning chamber;

[0013] S2: Set the cleaning and drying time via the control switch. The cleaning time is ~ minutes and the drying time is ~ minutes.

[0014] S3: The pneumatic pump starts working and delivers liquid to the cleaning fluid spray head through the internal air passage to spray and clean the crystal oscillator.

[0015] S4: After cleaning, the pneumatic pump is turned off, the pneumatic control valve is opened, and gas is introduced into the cleaning chamber to blow air directly onto the crystal oscillator to dry the residual cleaning liquid on the crystal oscillator.

[0016] S5: After the control time of the control switch ends, the pneumatic valve cuts off the gas supply, and the fixture is removed after drying is completed.

[0017] Preferably, during cleaning in step S, the pneumatic pump and pneumatic control valve are simultaneously turned on, and the internal air pressure is maintained at 0.5~0.6 MPa. The cleaning agent is an ethanolamine saponifying agent. The flow rate of the cleaning liquid spray head is controlled as follows:

[0018]

[0019] In the formula: q is the nozzle flow rate, p is the nozzle flow pressure, and K is the nozzle flow coefficient.

[0020] The beneficial effects of this invention are:

[0021] This invention relates to a pneumatic cleaning device and method for crystal oscillators. Compared with the prior art, this invention has the following technical advantages:

[0022] (1) The present invention uses a pneumatic pump and compressed air as power sources, while traditional cleaning equipment uses electricity for operation, which completely solves the safety problem of solvent-based cleaning liquid in the cleaning process.

[0023] (2) The present invention uses a timer, which can set the cleaning time and blowing time of the operation process; good cleaning quality and drying can be achieved by using the above parameters of the equipment; the problem of cleaning liquid flowing after cleaning the crystal oscillator is solved and the efficiency is also improved.

[0024] (3) The spray head used in this invention has multiple spray heads installed inside the cleaning chamber, which can meet the requirements of large area coverage cleaning size and multi-angle and multi-directional cleaning of crystal oscillators, thereby achieving good cleaning and drying effects.

[0025] (4) Moreover, the present invention provides a liquid storage tank and a filter at the rear of the equipment. During the cleaning process, the utilization efficiency of the cleaning liquid is improved and the amount of cleaning liquid is reduced by recycling and filtration.

[0026] This invention has the advantages of convenient operation, safe use, high cleaning efficiency, and good cleaning quality, and has high practical and promotional value in the field of crystal oscillator production. Attached Figure Description

[0027] Figure 1 This is the main view of the device;

[0028] Figure 2 This is a front view of the cleaning chamber and a diagram of the components below the cleaning chamber;

[0029] Figure 3 This is the front view of the cleaning room.

[0030] In the diagram: 1. Equipment cabinet; 2. Timer; 3. Control switch; 4. Cleaning door; 5. Cleaning chamber rear cover; 6. Equipment cabinet rear cover; 7. Cleaning chamber; 8. Exhaust pipe; 9. Cleaning liquid spray head; 10. Filter; 11. Pneumatic pump; 12. Liquid storage tank; 13. Internal air passage; 14. Compressed air inlet; 15. Pneumatic control valve; 16. Mesh plate clamp; 17. Mesh plate. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions herein are used to explain the present invention, but are not intended to limit the present invention.

[0032] like Figure 1 As shown: The present invention discloses a pneumatic cleaning device for a crystal oscillator, comprising a housing assembly, a cleaning assembly, a water supply assembly, and an air supply assembly. The cleaning assembly, the water supply assembly, and the air supply assembly are all disposed within the housing assembly, and the water supply assembly and the air supply assembly are connected to the water supply and air supply terminals of the cleaning assembly, respectively.

[0033] The outer casing assembly includes an equipment cabinet 1, a timer 2, a control switch 3, a cleaning door 4, a cleaning chamber rear cover 5, and an equipment cabinet rear cover 6. The cleaning component, the water supply component, and the air supply component are disposed inside the equipment cabinet 1. The timer 2 and the control switch 3 are connected to the control terminals of the water supply component and the air supply component. The timer 2 and the control switch 3 are both disposed on the front face of the equipment cabinet 1. The cleaning door 4 is disposed on the front face of the equipment cabinet 1 and is connected to the cleaning component disposed inside the equipment cabinet 1. The cleaning chamber rear cover 5 and the equipment cabinet rear cover 6 are disposed on the side of the equipment cabinet 1.

[0034] The cleaning assembly includes a cleaning chamber 7, an exhaust pipe 8, a cleaning fluid spray head 9, a screen clamp 16, and a screen 17. The cleaning chamber 7 is fixedly installed inside the equipment cabinet 1. The exhaust end of the cleaning chamber 7 is connected to one end of the exhaust pipe 8, and the other end of the exhaust pipe 8 extends outside the equipment cabinet 1. The screen 17 is fixedly installed inside the cleaning chamber 7 by the screen clamp 16. The cleaning fluid spray head 9 is installed inside the cleaning chamber 7 and located above the screen 17. A crystal oscillator is placed on the screen 17. The cleaning fluid spray head 9 is connected to the water supply assembly and the air supply assembly. The drain end of the equipment cabinet 1 is connected to the water inlet end of the water supply assembly.

[0035] The water supply assembly includes a filter 10, a pneumatic pump 11, and a storage tank 12. The inlet of the storage tank 12 is connected to the outlet of the equipment cabinet 1, the outlet of the storage tank 12 is connected to the inlet of the pneumatic pump 11, the outlet of the pneumatic pump 11 is connected to the inlet of the filter 10, and the outlet of the filter 10 is connected to the cleaning fluid spray head 9. The control terminal of the pneumatic pump 11 is connected to the control switch 3. The cleaning fluid spray head 9 has six small holes with a diameter of 0.2 mm, arranged in different directions, to allow compressed air or cleaning fluid to be sprayed in a multi-directional and fine manner.

[0036] The air supply assembly includes an internal air passage 13, a compressed air inlet 14, and an air control valve 15. The compressed air inlet 14 is located at the air inlet end of the air control valve 15. The compressed air inlet 14 is connected to the exhaust end of the compressed air equipment. The exhaust end of the air control valve 15 is connected to one end of the internal air passage 13, and the other end of the internal air passage 13 is connected to the cleaning chamber 7.

[0037] The cleaning method of the crystal oscillator pneumatic cleaning device of the present invention includes the following steps:

[0038] S1: Install the crystal oscillator on the fixture and place the fixture on the mesh plate 17 inside the cleaning chamber 7;

[0039] S2: Set the cleaning and drying time by controlling switch 3. The cleaning time is 3-5 minutes and the drying time is 5-8 minutes.

[0040] S3: The pneumatic pump 11 starts working and delivers liquid to the cleaning fluid spray head 9 through the internal air passage 13 to spray and clean the crystal oscillator.

[0041] S4: After cleaning, the pneumatic pump 11 is turned off and the pneumatic control valve 15 is opened. Gas is introduced into the cleaning chamber 7 and blown directly onto the crystal oscillator to dry the residual cleaning liquid on the crystal oscillator. During drying, the pneumatic pump directly transmits compressed air through the pipeline to the spray head. The spray head blows the compressed air onto the inner surface of the crystal oscillator. Since the cleaning liquid has the characteristic of evaporation at room temperature, the residual cleaning liquid on the crystal oscillator is removed under the acceleration of the compressed air to achieve drying efficiency.

[0042] S5: After the control time of control switch 3 ends, pneumatic valve 15 cuts off the gas supply, and the fixture is removed after drying is completed.

[0043] Preferably, during the cleaning process in step S3, the pneumatic pump 11 and the pneumatic control valve 15 are simultaneously turned on, and the pressure in the internal air passage 13 is maintained at 0.5~0.6 MPa. During cleaning, the pneumatic pump operates according to a set time, drawing liquid from the storage tank and pressurizing it to the rotating spray head. The cleaning fluid sprayed from the spray head washes the internal surface of the crystal oscillator. The cleaning fluid has activating and cleaning effects on contaminants on the internal surface of the crystal oscillator. When the pressure of the sprayed cleaning fluid reaches 0.5~0.6 MPa, the contaminants inside the crystal oscillator can be completely removed.

[0044] The cleaning agent is an ethanolamine saponifying agent. The main contaminant inside the crystal oscillator is rosin. The cleaning reaction process between the cleaning solution and the inside of the crystal oscillator is as follows:

[0045] C 19 H 29COOH (rosin) + HOCH2CH2NH2 (ethanolamine saponifying agent) CH 19 H 29 COOCH2CH2CH2NH2 (soluble rosin) + H2O

[0046] The smallest internal component size of the crystal oscillator is 1.2*0.6mm. Calculations based on relevant standards show that it can withstand a minimum impact force of 3.0Kg.f. Theoretically, the crystal oscillator is completely reliable as long as this value is not exceeded. The flow rate control of the cleaning fluid spray head 9 is as follows:

[0047]

[0048] In the formula: q is the nozzle flow rate, p is the nozzle flow pressure, and K is the nozzle flow coefficient. According to the formula, the impact force within the range of 0.1 kgf to 3.0 kgf meets the system requirements.

[0049] The technical solutions of the present invention are not limited to the specific embodiments described above. Any technical modifications made in accordance with the technical solutions of the present invention fall within the protection scope of the present invention.

Claims

1. A pneumatic cleaning device for a crystal oscillator, characterized in that: It includes a housing assembly, a cleaning assembly, a water supply assembly, and an air supply assembly. The cleaning assembly, the water supply assembly, and the air supply assembly are all disposed within the housing assembly. The water supply assembly and the air supply assembly are both connected to the water supply and air supply terminals of the cleaning assembly. The outer casing assembly includes an equipment cabinet (1), a timer (2), a control switch (3), a cleaning door (4), a cleaning chamber rear cover (5), and an equipment cabinet rear cover (6). The cleaning component, the water supply component, and the air supply component are disposed inside the equipment cabinet (1). The timer (2) and the control switch (3) are connected to the control terminals of the water supply component and the air supply component. The timer (2) and the control switch (3) are both disposed on the front face of the equipment cabinet (1). The cleaning door (4) is disposed on the front face of the equipment cabinet (1). The cleaning door (4) is connected to the cleaning component disposed inside the equipment cabinet (1). The cleaning chamber rear cover (5) and the equipment cabinet rear cover (6) are disposed on the side of the equipment cabinet (1). The cleaning assembly includes a cleaning chamber (7), an exhaust pipe (8), a cleaning fluid spray head (9), a mesh clamp (16), and a mesh (17). The cleaning chamber (7) is fixedly installed inside the equipment cabinet (1). The exhaust end of the cleaning chamber (7) is connected to one end of the exhaust pipe (8), and the other end of the exhaust pipe (8) extends outside the equipment cabinet (1). The mesh (17) is fixedly installed inside the cleaning chamber (7) by the mesh clamp (16). The cleaning fluid spray head (9) is installed inside the cleaning chamber (7) and located above the mesh (17). A crystal oscillator is placed on the mesh (17). The cleaning fluid spray head (9) is connected to the water supply assembly and the air supply assembly. The drain end of the equipment cabinet (1) is connected to the water inlet end of the water supply assembly.

2. The pneumatic cleaning device for crystal oscillators according to claim 1, characterized in that: The water supply assembly includes a filter (10), a pneumatic pump (11), and a storage tank (12). The inlet of the storage tank (12) is connected to the outlet of the equipment cabinet (1). The outlet of the storage tank (12) is connected to the inlet of the pneumatic pump (11). The outlet of the pneumatic pump (11) is connected to the inlet of the filter (10). The outlet of the filter (10) is connected to the cleaning fluid spray head (9). The control terminal of the pneumatic pump (11) is connected to the control switch (3).

3. The pneumatic cleaning device for crystal oscillators according to claim 2, characterized in that: The air supply assembly includes an internal air passage (13), a compressed air inlet (14), and an air control valve (15). The compressed air inlet (14) is provided at the air inlet end of the air control valve (15). The compressed air inlet (14) is connected to the exhaust end of the compressed air equipment. The exhaust end of the air control valve (15) is connected to one end of the internal air passage (13). The other end of the internal air passage (13) is connected to the cleaning chamber (7).

4. A cleaning method for a crystal oscillator pneumatic cleaning device as described in claim 3, characterized in that, Includes the following steps: S1: Install the crystal oscillator on the fixture and place the fixture on the mesh plate (17) inside the cleaning chamber (7); S2: Set the cleaning and drying time by controlling the switch (3). The cleaning time is 3-5 minutes and the drying time is 5-8 minutes. S3: The pneumatic pump (11) starts working and delivers liquid to the cleaning liquid spray head (9) through the internal air passage (13) to spray and clean the crystal oscillator; S4: After cleaning, the pneumatic pump (11) is turned off and the pneumatic control valve (15) is opened. Gas is introduced into the cleaning chamber (7) and blown directly onto the crystal oscillator to dry the residual cleaning liquid on the crystal oscillator. S5: After the control time of the control switch (3) ends, the pneumatic valve (15) cuts off the gas supply, and the fixed fixture is removed after the drying is completed.

5. The cleaning method of the pneumatic cleaning device for crystal oscillators according to claim 4, characterized in that: During cleaning in step S3, the pneumatic pump (11) and the pneumatic control valve (15) are turned on at the same time, and the pressure of the internal air circuit (13) is maintained at 0.5~0.6Mpa.

6. The cleaning method of the crystal oscillator pneumatic cleaning device according to claim 4, characterized in that: The cleaning agent used in the cleaning process is an ethanolamine saponifier.

7. The cleaning method of the pneumatic cleaning device for crystal oscillators according to claim 4, characterized in that: The flow rate control of the cleaning fluid spray head (9) is as follows: In the formula: q is the nozzle flow rate, p is the nozzle flow pressure, and K is the nozzle flow coefficient.

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