A portable ultrasonic cleaning machine for screw holes

Abstract

The present invention discloses a portable ultrasonic cleaning machine for screw holes, which relates to an ultrasonic cleaning device for cleaning blind holes or surfaces on large parts, including a tubular cleaning cylinder, an outer wall of which is provided with an adsorption device, the adsorption device is used to make one end face of the cleaning cylinder close to the surface of the large part, the surface of the large part closes one end face of the cleaning cylinder, and the cleaning liquid is stored in the cleaning cylinder; an ultrasonic cleaning rod is provided in the cleaning cylinder, and the ultrasonic cleaning rod is connected to an ultrasonic signal generator by electrical signal. The present invention is dedicated to ultrasonic cleaning of blind holes or surfaces on large parts, ensuring the cleaning efficiency of blind holes or surfaces on large parts, reducing the manual labor and ensuring the cleaning quality.

Description

Technical Field

[0001] The invention relates to an ultrasonic cleaning device, in particular to a portable ultrasonic cleaning machine special for screw holes. Background Art

[0002] The high-cleanliness cleaning method for screw holes is to use high-frequency ultrasonic cleaning. The currently commonly used ultrasonic cleaning machines usually place the parts and structural parts directly in the cleaning tank of the ultrasonic cleaning machine for cleaning when cleaning parts with screw holes. This type of cleaning machine is more convenient and reliable for cleaning structural parts or parts with small dimensions and light weight.

[0003] However, due to the cleaning space limitations of the ultrasonic cleaning machine itself, it is not suitable for large components (components of large size and mass), especially large components with blind holes or surfaces such as optical platforms and optical cabins. For the blind holes or surfaces on these large components, only conventional manual flushing or brushing can be used. Manual cleaning is not only inefficient but also of low cleaning quality. Summary of the invention

[0004] The purpose of the present invention is to provide a portable ultrasonic cleaning machine for screw holes in response to the above-mentioned problems, which is specially used for ultrasonic cleaning of blind holes or surfaces on large components, thereby ensuring the cleaning efficiency of blind holes or surfaces on large components, reducing manual labor and ensuring cleaning quality.

[0005] The technical solution adopted by the present invention is as follows: a portable ultrasonic cleaning machine for screw holes, used for cleaning blind holes or surfaces on large components, including a tubular cleaning cylinder, an outer wall of the cleaning cylinder is provided with an adsorption device, the adsorption device is used to make one end face of the cleaning cylinder close to the surface of the large component, the surface of the large component closes one end face of the cleaning cylinder, and cleaning liquid is stored in the cleaning cylinder; an ultrasonic cleaning rod is provided in the cleaning cylinder, and the ultrasonic cleaning rod is electrically connected to an ultrasonic signal generator.

[0006] Furthermore, a sealing ring is provided on the end surface of the cleaning cylinder close to the large component, and the sealing ring is pressed tightly between the cleaning cylinder and the large component.

[0007] Furthermore, the adsorption device is at least two vacuum suction cups or electromagnet devices, and a plurality of the vacuum suction cups or electromagnet devices are circumferentially arrayed on the outer side of the cleaning cylinder, and the vacuum suction cups or electromagnet devices act on the surface of the large component.

[0008] Furthermore, a liquid storage cylinder is fixed on the outer wall of the cleaning cylinder, and the inner wall of the liquid storage cylinder and the outer wall of the cleaning cylinder form a liquid storage cavity. A liquid inlet pump for extracting the cleaning liquid in the liquid storage cylinder into the cleaning cylinder is arranged between the liquid storage cylinder and the cleaning cylinder; a liquid return pump is also arranged between the liquid storage cylinder and the cleaning cylinder, and the liquid return pump is used to extract the liquid in the cleaning cylinder into the liquid storage cylinder.

[0009] Furthermore, the axes of the liquid storage cylinder and the cleaning cylinder are colinear.

[0010] Furthermore, a filter is provided at the liquid inlet of the liquid inlet pump.

[0011] Furthermore, a liquid discharge port is provided at the bottom of the liquid storage cylinder.

[0012] Furthermore, one end of the cleaning cylinder is in close contact with the large component, and the other end of the cleaning cylinder or / and the liquid storage cylinder is fixed with a closing plate, which closes the cleaning cylinder and / or the liquid storage cylinder, and the ultrasonic signal generator, liquid inlet pump and liquid return pump are all installed on the mounting plate.

[0013] Furthermore, a filling port for adding cleaning liquid into the liquid storage cylinder is provided on the mounting plate, and the filling port is detachably and sealedly connected with a screw cap.

[0014] Furthermore, a ventilation pipe is provided on the mounting plate, the ventilation pipe is connected to the outside air, and the ventilation pipe is connected to the liquid storage cylinder and the cleaning cylinder.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] 1. The present invention uses an adsorption device to place the cleaning cylinder tightly on the large component, thus solving the problem that the large component cannot be placed in the cleaning cylinder for cleaning, so that the cleaning of the large component does not require manual flushing or scrubbing, thereby reducing the manual workload;

[0017] 2. The present invention solves the problem that ultrasonic waves cannot clean large components, and ensures the cleaning quality of blind holes or surfaces on the upper surface of large components and blind holes or surfaces on the side surfaces of large components. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will now be described by way of example with reference to the accompanying drawings, in which:

[0019] Figure 1 It is a schematic diagram of the cleaning state and structure of the present invention;

[0020] Figure 2 It is a non-cleaning state and structural schematic diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the state of cleaning the side of a large component according to the present invention;

[0022] Figure 4 It is a schematic diagram of the sealing ring assembly structure disclosed in the present invention;

[0023] Figure 5 for Figure 2 Schematic diagram of the cross-sectional structure along the A-A direction;

[0024] Figure 6 It is a schematic diagram of the top view of the structure of the present invention;

[0025] Figure 7 It is a schematic diagram of the appearance structure of the present invention;

[0026] Markings in the figure: 1-cleaning cylinder; 2-liquid storage cylinder; 3-filter; 4-large components; 5-ultrasonic cleaning rod; 6-liquid inlet pump; 7-liquid return pump; 8-sealing ring; 9-adsorption device; 10-ultrasonic signal generator; 11-ventilation pipe; 12-top cover; 13-storage liquid level gauge; 14-filling port; 15-controller; 151-control button; 16-cleaning liquid level gauge. DETAILED DESCRIPTION

[0027] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0028] Any feature disclosed in this specification, unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0029] like Figure 1 - Figure 6As shown, a portable ultrasonic cleaning machine for screw holes is used to clean blind holes or surfaces on large components 4, including a tubular cleaning cylinder 1, an outer wall of the cleaning cylinder 1 is provided with an adsorption device 9, the adsorption device 9 is used to make one end face of the cleaning cylinder 1 close to the surface of the large component 4, the surface of the large component 4 closes one end face of the cleaning cylinder 1, and a cleaning liquid is stored in the cleaning cylinder 1. The cleaning liquid is preferably an emulsion in this embodiment. Since one end face of the cleaning cylinder 1 is in close contact with the surface of the large component 4, the cleaning liquid will not leak. The cleaning liquid exists in the space surrounded by the surface of the large component 4 and the inner wall of the cleaning cylinder 1. The cleaning liquid can directly contact the cleaning position on the large component 4, which solves the problem that the large component 4 cannot be placed in the cleaning cylinder 1 for cleaning, so that the cleaning of the large component 4 does not require manual rinsing or scrubbing, thereby reducing the workload of manual labor; an ultrasonic cleaning rod 5 is provided in the cleaning cylinder 1, and the ultrasonic cleaning rod 5 The ultrasonic cleaning rod 5 is electrically connected to the ultrasonic signal generator 10, and is equivalent to a transducer, which can convert the signal received from the ultrasonic signal generator 10 into a mechanical vibration of the same frequency, so that the microbubbles in the cleaning liquid can keep vibrating under the action of the sound waves, further destroying the dirt and adsorbed substances on the surface of the large component 4 or in the blind hole, thereby achieving the purpose of cleaning and ensuring the cleaning quality.

[0030] In this embodiment, the ultrasonic cleaning rod 5 is preferably a GN-20Pro ultrasonic cleaning rod 5, which has an ultrasonic signal generator 10 and can generate an ultrasonic frequency of 38KHz.

[0031] In this embodiment, in order to improve the automation performance, the ultrasonic signal generator 10 is externally connected to a controller 15. The controller 15 is preferably an STM32 single-chip microcomputer, which can self-compile a control program according to actual working conditions. A control button 151 is provided on the controller 15, and the control button 151 can control the operation of the controller 15.

[0032] Furthermore, the control principle of the controller 15 controlling the ultrasonic cleaning rod 5 is as follows:

[0033] The controller 15 controls the ultrasonic signal generator 10 to start working after the control button 151 is manually operated. The ultrasonic signal generator 10 sends an ultrasonic signal to the ultrasonic cleaning rod 5. The ultrasonic cleaning rod 5 generates vibrations of the same frequency according to the ultrasonic signal, thereby performing cleaning work.

[0034] In this embodiment, a sealing ring 8 is provided on the end face of the cleaning cylinder 1 close to the large component 4, and the sealing ring 8 is pressed between the cleaning cylinder 1 and the large component 4. After being pressed, the sealing ring 8 fills the gap between the end face of the cleaning cylinder 1 and the large component 4, further ensuring the seal and effectively preventing the cleaning liquid in the cleaning cylinder 1 from leaking during the cleaning work.

[0035] Furthermore, in the present embodiment, an annular groove is provided on the end face of the cleaning cylinder 1, and the annular groove is used to place the sealing ring 8. The cross-section of the annular groove is preferably a "dovetail type", and the groove depth of the annular groove should be greater than half of the cross-sectional diameter of the sealing ring 8, and the groove depth of the annular groove should be less than the cross-sectional diameter of the sealing ring 8, so that the sealing ring 8 will not fall off the annular groove, and it can also ensure that the part of the sealing ring 8 that exists is filled between the cleaning cylinder 1 and the large component 4.

[0036] It should be noted that ensuring the seal between the cleaning cylinder 1 and the large component 4 is the most basic requirement for cleaning the large component 4, and the seal must be ensured by subjecting the sealing ring 8 to sufficient pressure (i.e. pre-tightening force). To this end, the adsorption force of the adsorption device 9 needs to be large enough and uniform.

[0037] In this embodiment, if Figure 5 As shown, the adsorption device 9 is at least two vacuum suction cups, preferably four. The vacuum suction cup model is preferably a single-claw vacuum suction cup, which can be operated with one hand and is convenient for adsorption on the large component 4. The circumferential array of the four vacuum suction cups is on the outer side of the cleaning cylinder 1, and the vacuum suction cup acts on the surface of the large component 4. The circumferential array is evenly distributed along the circumference, so that the cleaning cylinder 1 can be evenly subjected to force on the large component 4; on the other hand, the four adsorption devices 9 can form a quadrilateral surface to ensure stable adsorption, especially when adsorbed on the side of the large component 4, it can also remain stable.

[0038] In another embodiment, when the large component 4 is made of magnetic metal material, the adsorption device 9 is at least two electromagnet devices, and a circumferential array of the electromagnet devices is arranged on the outer side of the cleaning cylinder 1 , and the electromagnet devices act on the surface of the large component 4 .

[0039] In this embodiment, if Figure 1 - Figure 3 As shown, for the convenience of carrying, a liquid storage cylinder 2 is fixed and sealed on the outer wall of the cleaning cylinder 1, and the inner wall of the liquid storage cylinder 2 and the outer wall of the cleaning cylinder 1 form a liquid storage cavity, and the cleaning liquid is stored in the liquid storage cavity. A liquid inlet pump 6 for extracting the cleaning liquid in the liquid storage cylinder 2 into the cleaning cylinder 1 is arranged between the liquid storage cylinder 2 and the cleaning cylinder 1. When it is necessary to clean a certain local position of the large component 4, the liquid inlet pump 6 extracts the cleaning liquid in the liquid storage cylinder 2 into the cleaning cylinder 1; a liquid return pump 7 is also arranged between the liquid storage cylinder 2 and the cleaning cylinder 1, and the liquid return pump 7 is used to extract the liquid in the cleaning cylinder 1 into the liquid storage cylinder. During the cleaning process of a certain local position of the large component 4 or after the cleaning is completed, the liquid return pump 7 extracts the cleaning liquid in the cleaning cylinder 1 into the liquid storage cylinder 2.

[0040] It should be noted that the liquid inlet pump 6 and the liquid return pump 7 are independent of each other and do not affect each other. They can also work at the same time. When the liquid inlet pump 6 and the liquid return pump 7 work at the same time, the liquid return pump 7 can draw the cleaning liquid containing stains or particles in the cleaning cylinder 1 into the liquid storage cylinder 2, and the liquid inlet pump 6 can draw the cleaning liquid with relatively less stains or particles into the cleaning cylinder 1, ensuring that the cleaning liquid can continue to maintain its cleaning ability.

[0041] In this embodiment, in order to facilitate observation of the liquid level in the cleaning cylinder 1 and / or the liquid storage cylinder 2, a cleaning liquid level scale 16 is provided in the cleaning cylinder 1; a storage liquid level scale 13 is provided in the storage cylinder; the cleaning liquid level scale 16 and the storage liquid level scale 13 are both transparent tubes, and are connected to corresponding components, so that the operator can observe the amount of cleaning liquid in the cleaning cylinder 1 and / or the storage cylinder outside the device.

[0042] Furthermore, the liquid inlet of the liquid inlet pump 6 extends into the bottom of the liquid storage cylinder 2 through a pipe; the liquid outlet of the liquid inlet pump 6 is located at the top of the cleaning cylinder 1 through a pipe; the liquid inlet of the liquid return pump 7 extends into the bottom of the cleaning cylinder 1 through a pipe; the liquid outlet of the liquid return pump 7 is located at the top of the liquid storage tank through a pipe.

[0043] In this embodiment, in order to improve automation, the energy input end of the liquid inlet pump 6 and the energy input end of the liquid return pump 7 are both connected to the controller 15. The controller 15 is connected to an external power supply through a transformer, and the transformer converts the power supply voltage into the rated voltage required for the operation of the controller 15.

[0044] In this embodiment, the axes of the liquid storage cylinder 2 and the cleaning cylinder 1 are colinear, which reduces the fluctuation of the force at each position caused by the change of the liquid level, especially when cleaning the upper surface of the large component 4. The axes of the liquid storage cylinder 2 and the cleaning cylinder 1 are colinear, so that the large component 4 is evenly subjected to the pressure from the cleaning cylinder 1. On the other hand, when cleaning the upper surface of the large component 4, the cleaning liquid in the liquid storage cylinder 2 is subjected to its own gravity on the cleaning cylinder 1, so that the cleaning cylinder 1 further squeezes the surface of the large component 4, further increases the preload force between the cleaning cylinder 1 and the sealing ring 8, and the preload force between the sealing ring 8 and the surface of the large component 4, making the sealing ability of the sealing ring 8 more stable and reliable.

[0045] In this embodiment, as described above, the cleaning liquid in the cleaning cylinder 1 is drawn by the return pump 7 and flows into the liquid storage tank, and the liquid inlet pump 6 will draw the cleaning liquid in the liquid storage cylinder 2 back into the cleaning cylinder 1. The liquid inlet of the liquid inlet pump 6 is provided with a filter 3, and the filter 3 can filter the solid particles or iron filings in the cleaning liquid to prevent it from flowing back into the cleaning cylinder 1 again.

[0046] In this embodiment, a drain port is provided at the bottom of the liquid storage cylinder 2, and a drain valve or a drain sealing cover is provided at the drain port. When the cleaning liquid in the liquid storage cylinder 2 and / or the cleaning cylinder 1 is insufficient to achieve the cleaning capacity, the cleaning liquid can be discharged through the drain port.

[0047] In this embodiment, one end of the cleaning cylinder 1 is in close contact with the large component 4, and the other end of the cleaning cylinder 1 or / and the liquid storage cylinder 2 is fixed with a closing plate, which closes the cleaning cylinder 1 and / or the liquid storage cylinder 2 to prevent the cleaning liquid from spilling out. The ultrasonic signal generator 10, the liquid inlet pump 6 and the liquid return pump 7 are all installed on the mounting plate, and the closing plate also provides mounting positions for the above-mentioned components.

[0048] Furthermore, a filling port 14 for adding cleaning liquid into the liquid storage cylinder 2 is provided on the mounting plate, and the filling port 14 is detachably sealed and connected with a screw cap, and a sealing gasket is arranged in the screw cap, and the sealing gasket is compressed after the screw cap and the thread of the filling port 14 are tightened, thereby achieving a sealed and detachable connection; when cleaning liquid needs to be added to the liquid storage cylinder 2, the screw cap can be directly opened and the cleaning liquid can be added from the filling port 14.

[0049] In this embodiment, as described above, after the device is installed on the large component 4, combined with the closing plate, the internal spaces of the cleaning cylinder 1 and the liquid storage cylinder 2 are completely isolated from the outside world, and the cleaning cylinder 1 and the liquid storage cylinder 2 are isolated from each other. After the liquid level in the cleaning cylinder 1 or / and the liquid storage cylinder 2 changes, since the air in the cleaning cylinder 1 or / and the liquid storage cylinder 2 cannot be removed or / and cannot be replenished, the air in the cleaning cylinder 1 or / and the liquid storage cylinder 2 will be squeezed or / and stretched, further causing the air pressure in the cleaning cylinder 1 or / and the liquid storage cylinder 2 to increase or / and decrease, thereby affecting the liquid extraction work of the liquid inlet pump 6 or / and the liquid return pump 7. For this purpose, a ventilation pipe 11 is provided on the mounting plate, and the ventilation pipe 11 is connected to the outside air. The ventilation pipe 11 connects the liquid storage cylinder 2 and the cleaning cylinder 1, so that the air in the cleaning cylinder 1 or / and the liquid storage cylinder 2 can be removed or / and replenished evenly, ensuring that the liquid inlet pump 6 or / and the liquid return pump 7 can work normally.

[0050] In this embodiment, in order to protect the liquid inlet pump 6, liquid return pump 7, ultrasonic signal generator 10, controller 15 and other devices installed on the closing plate, the liquid storage cylinder 2 and / or the cleaning cylinder 1 also has a top cover 12, and the ultrasonic signal generator 10, controller 15, liquid inlet pump 6 and liquid return pump 7 are all located in the top cover 12; the filling port 14 and the ventilation pipe 11 both pass through the top cover 12 through a pipe.

[0051] In this embodiment, a portable ultrasonic cleaning machine for screw holes is used to clean an optical platform and / or an optical cabin in the following manner:

[0052] S1: Determine the position on the optical platform or / and the optical cabin that needs to be cleaned, and place the cleaning cylinder 1 against the position on the optical platform or / and the optical cabin, and the cleaning position is located inside the cleaning cylinder 1;

[0053] S2: The adsorption device 9 is adsorbed on the optical platform or / and the optical cabin, that is, the suction cup puller of the vacuum suction cup is pressed down, and the sealing ring 8 on the lower end surface of the cleaning cylinder 1 is closely attached to the optical platform or / and the optical cabin under the adsorption action of the vacuum suction cup, forming a closed space for containing the cleaning liquid, and the cleaning position of the optical platform or / and the optical cabin is located in the closed space;

[0054] S3: Press the relevant button on the controller 15, the liquid inlet pump 6 starts to work, and the liquid in the liquid storage cylinder 2 is pumped into the cleaning cylinder 1;

[0055] S4: Press the relevant button on the controller 15, the controller 15 controls the ultrasonic signal generator to emit an ultrasonic signal, and the ultrasonic cleaning rod 5 converts the ultrasonic signal into mechanical vibration, so that the cleaning liquid vibrates, and ultrasonic cleaning is continuously performed on the position to be cleaned;

[0056] S5: Press the relevant button on the controller 15, the liquid return pump 7 starts to work, and the liquid in the cleaning cylinder 1 flows back to the liquid storage cylinder 2;

[0057] S6: After cleaning is completed, unlock the suction cup pull rod, release the force of the vacuum suction cup, remove the device, and take the cleaning liquid away with the liquid storage cylinder 2 to complete the cleaning and prevent the cleaning liquid from flowing everywhere.

[0058] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A portable ultrasonic cleaning machine for screw holes, characterized in that: The invention comprises a tubular cleaning cylinder (1), an outer wall of which is provided with an adsorption device (9), the adsorption device (9) being used to make one end face of the cleaning cylinder (1) close to the surface of a large component (4), the surface of the large component (4) sealing one end face of the cleaning cylinder (1), the cleaning liquid being stored in the cleaning cylinder (1); an ultrasonic cleaning rod (5) being provided in the cleaning cylinder (1), the ultrasonic cleaning rod (5) being electrically connected to an ultrasonic signal generator (10); A sealing ring (8) is provided on the end surface of the cleaning cylinder (1) close to the large component (4), and the sealing ring (8) is pressed tightly between the cleaning cylinder (1) and the large component (4); A liquid storage cylinder (2) is fixed on the outer wall of the cleaning cylinder (1); the inner wall of the liquid storage cylinder (2) and the outer wall of the cleaning cylinder (1) form a liquid storage cavity; a liquid inlet pump (6) for extracting the cleaning liquid in the liquid storage cylinder (2) into the cleaning cylinder (1) is arranged between the liquid storage cylinder (2) and the cleaning cylinder (1); a liquid return pump (7) is also arranged between the liquid storage cylinder (2) and the cleaning cylinder (1); the liquid return pump (7) is used to extract the liquid in the cleaning cylinder (1) into the liquid storage cylinder; The axes of the liquid storage cylinder (2) and the cleaning cylinder (1) are colinear; One end of the cleaning cylinder (1) is in close contact with the large component (4), and a closing plate is fixed to the other end of the cleaning cylinder (1) or / and the liquid storage cylinder (2), and the closing plate closes the cleaning cylinder (1) or / and the liquid storage cylinder (2), and the ultrasonic signal generator (10), the liquid inlet pump (6) and the liquid return pump (7) are all installed on the mounting plate; The mounting plate is provided with a ventilation pipe (11), the ventilation pipe (11) is in communication with the outside air, and the ventilation pipe (11) is in communication with the liquid storage cylinder (2) and the cleaning cylinder (1); The end surface of the cleaning cylinder (1) is provided with an annular groove, the annular groove is used to place the sealing ring (8), the cross section of the annular groove is a "dovetail shape", the groove depth of the annular groove is greater than half of the cross-sectional diameter of the sealing ring (8), and the groove depth of the annular groove is less than the cross-sectional diameter of the sealing ring (8); The liquid inlet of the liquid inlet pump (6) is provided with a filter (3); The liquid outlet of the liquid inlet pump (6) is located at the top of the cleaning cylinder (1) through a pipeline; the liquid inlet of the liquid return pump (7) extends into the bottom of the cleaning cylinder (1) through a pipeline.

2. The portable ultrasonic cleaning machine for screw holes according to claim 1 is characterized in that: The adsorption device (9) is at least two vacuum suction cups or electromagnet devices, and a plurality of the vacuum suction cups or electromagnet devices are arranged in a circumferential array on the outer side of the cleaning cylinder (1), and the vacuum suction cups or electromagnet devices act on the surface of the large component (4).

3. The portable ultrasonic cleaning machine for screw holes according to claim 1 is characterized in that: The bottom of the liquid storage cylinder (2) is provided with a liquid discharge port.

4. The portable ultrasonic cleaning machine for screw holes according to claim 1 is characterized in that: The mounting plate is provided with a filling port (14) for adding cleaning liquid into the liquid storage cylinder (2), and the filling port (14) is detachably sealed and connected to a screw cap.

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