An online cleaning device suitable for precision devices

Abstract

The present application relates to the field of PCBA board surface cleaning, and specifically, to an online cleaning device suitable for precision devices, including: a frame; a nozzle drive mechanism, mounted on the frame; a crushed ice pipe, one end of which is connected to the first inlet of the cleaning nozzle, and the side is connected to a dry ice pipe connected to the inside thereof; a rotating grinding head, which is arranged in the crushed ice pipe, and its rotating axis is eccentric to the crushed ice pipe, and the connection between the dry ice pipe and the crushed ice pipe is located on the side of the rotating grinding head away from the cleaning nozzle; a rotating drive mechanism, the output end of which is connected to the rotating grinding head. The online cleaning device suitable for precision devices of the present application can solve the problem that the existing dry ice cleaning method applied to PCBA boards cannot quickly, effectively and meticulously clean the surface of PCBA boards, and can combine the advantages of dry ice particles of different volumes to quickly, effectively and meticulously clean the surface of PCBA boards.

Description

Technical Field

[0001] The present application relates to the field of PCBA board surface cleaning, and in particular, to an online cleaning device suitable for precision devices. Background Art

[0002] Dry ice cleaning is an existing method for cleaning the surface of PCBA boards (i.e. printed circuit boards with electronic components installed). The process is based on the impact of dry ice particles on the surface of the PCBA board so that the dry ice particles quickly absorb heat and sublimate into carbon dioxide gas. This process can make the contaminants on the surface of the PCBA board brittle and peel off from the surface of the PCBA board to achieve cleaning of the surface of the PCBA board. However, large dry ice particles cannot penetrate into the tiny gaps and holes on the PCBA board to remove the contaminants therein, so it is impossible to clean the PCBA board in detail. Small dry ice particles have a fast sublimation time, and the cleaning area formed on the PCBA board after spraying is small and the cleaning effect is poor, so it is impossible to quickly and effectively clean the surface of the PCBA board. Therefore, the existing dry ice cleaning method applied to PCBA boards cannot quickly, effectively and carefully clean the surface of the PCBA board.

[0003] Therefore, the existing technology needs to be improved and developed. Summary of the invention

[0004] The purpose of the present application is to provide an online cleaning device suitable for precision devices, aiming to solve the problem that the existing dry ice cleaning method applied to PCBA boards cannot clean the surface of PCBA boards quickly, effectively and meticulously.

[0005] The present application provides an online cleaning device suitable for precision devices, which is used to clean PCBA boards, including:

[0006] frame;

[0007] A nozzle driving mechanism is mounted on the frame;

[0008] A cleaning nozzle is installed on the nozzle driving mechanism, and has a first inlet and a nozzle outlet. The nozzle driving mechanism is used to drive the cleaning nozzle to move horizontally so that the cleaning nozzle cleans the surface of the PCBA board;

[0009] An ice crushing pipe, one end of which is connected to the first inlet of the cleaning nozzle, and the side of which is connected to a dry ice pipe connected to the inside thereof;

[0010] The rotating grinding head is arranged in the crushed ice pipe, the rotating axis of which is eccentric to the crushed ice pipe, and the connection between the dry ice pipe and the crushed ice pipe is located on the side of the rotating grinding head away from the cleaning nozzle;

[0011] The rotary drive mechanism has an output end connected to the rotary grinding head and is used to drive the rotary grinding head to rotate.

[0012] The online cleaning equipment for precision devices provided in the present application can grind dry ice into dry ice particles of different comprehensive volumes, thereby combining the advantages of dry ice particles of different volumes and can quickly, effectively and meticulously clean the surface of the PCBA board.

[0013] Optionally, the rotating grinding head is a conical grinding head, and the cone tip is arranged toward the cleaning nozzle.

[0014] In this embodiment, the present application sets a conical grinding head with the cone tip facing the cleaning nozzle, which can make the dry ice particles formed by the rotating grinding head grinding the dry ice have a larger movement space, thereby increasing the spray flow rate of the dry ice particles to achieve a better cleaning effect.

[0015] Optionally, the ice crushing pipeline includes a small pipe section and a large pipe section arranged up and down, the transition connection portion of the small pipe section and the large pipe section is located at the outer periphery of the side of the rotating grinding head, and a gap is formed between the transition connection portion of the small pipe section and the large pipe section and the side of the rotating grinding head;

[0016] Online cleaning equipment suitable for precision devices also includes:

[0017] The first lifting mechanism is fixedly connected to the rotary drive mechanism and is used to drive the rotary drive mechanism to lift and lower the rotary grinding head to change the minimum distance between the side of the rotary grinding head and the transition connection part between the small pipe section and the large pipe section.

[0018] In this embodiment, the present application can adjust the average volume of dry ice particles as needed to achieve the desired cleaning effect.

[0019] Optionally, the first lifting mechanism includes:

[0020] The telescopic block is detachably mounted on the ice crushing pipe and fixedly connected to the rotary drive mechanism;

[0021] The mounting seat is fixedly mounted on the cleaning nozzle and is slidably connected with the telescopic block.

[0022] Optionally, the online cleaning equipment suitable for precision devices also includes:

[0023] The horizontal conveying mechanism is installed on the frame and located above the cleaning nozzle, and is used to carry and horizontally convey the PCBA board.

[0024] Optionally, the horizontal conveying mechanism comprises:

[0025] A first transverse conveying mechanism is mounted on the frame;

[0026] The second transverse conveying mechanism is slidably mounted on the frame along the Y direction, and is used to cooperate with the first transverse conveying mechanism to clamp the PCBA board and convey the PCBA board in the X direction.

[0027] Optionally, the online cleaning equipment suitable for precision devices also includes:

[0028] The locking and fixing mechanism is arranged above the horizontal conveying mechanism and is used to temporarily lock the PCBA board to be cleaned on the horizontal conveying mechanism.

[0029] Optionally, the locking and fixing mechanism includes:

[0030] A connecting frame is horizontally arranged above the horizontal conveying mechanism;

[0031] A layering strip assembly, one end of which is connected to the connecting frame;

[0032] The cylinder has a bottom fixedly connected to the top of the connecting frame, and a top fixedly connected to the frame, and is used to perform telescopic movement to drive the connecting frame to rise and fall, so that the pressure strip assembly rises and falls to press or loosen the PCBA board to be cleaned on the horizontal conveying mechanism.

[0033] Optionally, the online cleaning equipment suitable for precision devices is connected with a negative pressure extraction mechanism;

[0034] The locking and fixing mechanism also includes:

[0035] The negative pressure extraction member is installed on the connecting frame and has a cavity inside. The negative pressure extraction member is used to extract pollutants and dry ice particles that impact the PCBA board to be cleaned on the horizontal conveying mechanism during the cleaning process into the cavity inside the negative pressure extraction member;

[0036] Online cleaning equipment suitable for precision devices also includes:

[0037] One end of the negative pressure extraction pipeline is communicated with the cavity inside the negative pressure extraction piece, and the other end is connected to the negative pressure extraction mechanism.

[0038] Optionally, the online cleaning device suitable for precision devices comprises a housing, and the frame is arranged in the housing;

[0039] The housing has openings on two side walls corresponding to the two ends of the second transverse conveying mechanism;

[0040] Two ends of the second transverse conveying mechanism pass through the two openings respectively.

[0041] From the above, it can be seen that the present application provides an online cleaning device suitable for precision devices, which can grind dry ice into dry ice particles of different comprehensive volumes, thereby combining the advantages of dry ice particles of different volumes and can quickly, effectively and meticulously clean the surface of the PCBA board.

[0042] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the written description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic diagram of the structure of an online cleaning device suitable for precision devices provided in an embodiment of the present application at one viewing angle.

[0044] Figure 2 For this application Figure 1 Enlarged view of point A in the middle.

[0045] Figure 3 A schematic diagram of the structure of the cleaning nozzle provided in an embodiment of the present application.

[0046] Figure 4 For this application Figure 3 Enlarged view of point D in the middle.

[0047] Figure 5 A cross-sectional view of an ice crushing pipeline provided in an embodiment of the present application.

[0048] Figure 6 A schematic diagram of the structure of the negative pressure extraction pipeline provided in an embodiment of the present application.

[0049] Figure 7 For this application Figure 6 Enlarged view of point B in the middle.

[0050] Figure 8 A schematic diagram of the structure of a casing provided in an embodiment of the present application.

[0051] Fig. 9 For this application Figure 8 Enlarged view of point C in the middle.

[0052] Fig.10 A schematic diagram of the structure of an online cleaning device suitable for precision devices provided in an embodiment of the present application from another perspective.

[0053] Fig.11 A schematic diagram of the gap between the side of the rotating grinding head and the transition connection part between the small pipe section and the large pipe section provided in an embodiment of the present application.

[0054] Fig.12 For this application Fig.11 Enlarged view of point E in the middle.

[0055] Explanation of reference numerals: 1. Frame; 2. Nozzle drive mechanism; 21. Longitudinal conveying mechanism; 22. Third transverse conveying mechanism; 23. Third lifting mechanism; 3. Cleaning nozzle; 31. Annular airflow nozzle; 4. Ice crushing pipe; 41. Small pipe section; 42. Large pipe section; 5. Dry ice pipe; 6. Rotating grinding head; 7. Rotating drive mechanism; 8. First lifting mechanism; 81. Telescopic block; 82. Mounting seat; 9. Horizontal conveying mechanism; 91. Sliding mechanism; 92. First transverse conveying mechanism; 93. Second transverse conveying mechanism; 10. Locking and fixing mechanism; 101. Connecting frame; 102. Cylinder; 103. Pressure strip assembly; 1031. Connecting piece; 1032. Pressure strip; 104. Negative pressure extraction piece; 105. Negative pressure extraction pipe; 20. Casing; 201. Baffle; 100. Negative pressure extraction mechanism. DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0057] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0058] First, as Figure 1 , Figure 3 and Figure 5 As shown, the present application provides an online cleaning device suitable for precision devices, which is used to clean PCBA boards, including:

[0059] Rack 1;

[0060] A nozzle driving mechanism 2 is mounted on the frame 1;

[0061] The cleaning nozzle 3 is installed on the nozzle driving mechanism 2, and has a first inlet and a nozzle outlet. The nozzle driving mechanism 2 is used to drive the cleaning nozzle 3 to move horizontally so that the cleaning nozzle 3 cleans the surface of the PCBA board;

[0062] An ice crushing pipe 4, one end of which is connected to the first inlet of the cleaning nozzle 3, and a dry ice pipe 5 connected to the inside thereof is connected to the side;

[0063] The rotating grinding head 6 is arranged in the crushed ice pipe 4, and its rotating axis is eccentric to the crushed ice pipe 4. The connection between the dry ice pipe 5 and the crushed ice pipe 4 is located on the side of the rotating grinding head 6 away from the cleaning nozzle 3;

[0064] The output end of the rotary driving mechanism 7 is connected to the rotary grinding head 6 and is used to drive the rotary grinding head 6 to rotate.

[0065] Specifically, the working process of the online cleaning equipment suitable for precision devices is as follows: the nozzle driving mechanism 2 drives the cleaning nozzle 3 to move horizontally so that the nozzle outlet of the cleaning nozzle 3 is aligned with the local area of ​​the PCBA board surface pre-placed on the online cleaning equipment suitable for precision devices, the rotary driving mechanism 7 drives the rotary grinding head 6 to rotate, the dry ice enters the dry ice pipe 5 and is ground into dry ice particles based on the rotary grinding head 6, the dry ice particles enter the cleaning nozzle 3 from the crushed ice pipe 4 based on the first inlet and are ejected from the nozzle outlet of the cleaning nozzle 3 to clean the local area of ​​the PCBA board surface; after completing the cleaning of the local area of ​​the PCBA board surface aligned with the nozzle outlet of the cleaning nozzle 3, the nozzle driving mechanism 2 drives the cleaning nozzle 3 to move horizontally so that the nozzle outlet of the cleaning nozzle 3 is aligned with the local area of ​​the PCBA board surface that has not been cleaned to clean this local area; the nozzle driving mechanism 2 repeatedly executes the step of driving the cleaning nozzle 3 to move horizontally after completing the cleaning of the local area so that the nozzle outlet of the cleaning nozzle 3 is aligned with the local area of ​​the PCBA board surface that has not been cleaned, until the cleaning of all areas of the PCBA board surface is completed.

[0066] More specifically, the present application is based on the cleaning of PCB boards using dry ice particles without using liquids, so the present application is suitable for precision devices that are sensitive to water or have poor sealing properties.

[0067] More specifically, if Fig.11 and Fig.12 As shown, Fig.12The d1 and d2 in the figure are the distances between different areas on the side of the rotating grinding head 6 and the inner wall of the crushed ice pipe 4, and d1<d2. It can be seen that when the rotating axis of the rotating grinding head 6 is eccentric to the crushed ice pipe 4, a gap with a width gradually changing from d1 to d2 is formed between the side of the rotating grinding head 6 and the inner wall of the crushed ice pipe 4. Therefore, after the rotating drive mechanism 7 drives the rotating grinding head 6 to rotate and the dry ice enters the dry ice pipe 5, the side of the rotating grinding head 6 can grind the dry ice into dry ice particles with volumes corresponding to various diameters within a specific diameter range, wherein the larger dry ice particles sublimate more slowly, exist longer, have a better cleaning effect, and can form a larger cleaning area after being ejected, thereby quickly and effectively removing pollutants; the smaller dry ice particles can penetrate into the gaps and holes on the surface of the PCBA board, thereby more carefully cleaning the surface of the PCBA board. Therefore, the present application can combine the advantages of dry ice particles of different volumes, and can quickly, effectively and carefully clean the surface of the PCBA board.

[0068] The online cleaning equipment for precision devices of the present application can grind dry ice into dry ice particles of different comprehensive volumes, thereby combining the advantages of dry ice particles of different volumes and can quickly, effectively and meticulously clean the surface of the PCBA board.

[0069] Preferably, the cleaning shower head 3 further has a second inlet for introducing plasma.

[0070] Specifically, when the surface of the PCBA board needs to be cleaned, the nozzle of the cleaning nozzle 3 is aligned with a local area of ​​the surface of the PCBA board that is pre-placed on an online cleaning device suitable for precision devices, and dry ice is introduced into the dry ice pipe 5 and plasma is introduced into the second inlet so that dry ice particles and plasma can be ejected from the nozzle of the cleaning nozzle 3 together to clean the surface of the PCBA board. In this process, high-energy particles in the plasma can react with pollutants on the surface of the object, and pollutants with smaller thickness that are difficult to be removed by dry ice particles are removed by ion impact, dissociation, oxidation, reduction, etc.

[0071] More specifically, the cleaning method based on dry ice particles and plasma does not use liquid to clean the surface of the PCBA board, and is suitable for precision devices that are sensitive to water or have poor sealing. In addition, dry ice and plasma can efficiently remove a variety of contaminants of different thicknesses on the surface of the PCBA board.

[0072] In addition, in the scenario of cleaning the PCBA board based on the existing dry ice cleaning method, when the dry ice particles impact the surface of the PCBA board, the PCBA board will cool down rapidly, and the water vapor in the air may be liquefied, and the pollutants in the air in the form of ions may remain on the surface of the PCBA board after cleaning along with the water vapor, resulting in ion contamination and possible damage to precision devices that are sensitive to water or have poor sealing. In the scenario of cleaning the PCBA board based on the existing plasma cleaning method, the temperature of the plasma flame is generally higher than 200°C, and it may cause thermal damage and thermal deformation stress after impacting the surface of the PCBA board. However, the present application Based on the joint cleaning of the PCBA board surface by dry ice particles and plasma, the average temperature of the fluid used to clean the PCBA board surface during the cleaning process is generally between 10°C and 60°C. When the dry ice particles and plasma are evenly distributed in the fluid, the dry ice particles and plasma keep the entire surface of the PCBA board at 10°C to 60°C so that the PCBA board does not produce a large temperature difference. Therefore, based on the coupled cleaning nozzle of the present application, the surface of the PCBA board is cleaned, and the temperature of the PCBA board can be kept within a certain temperature range, thereby avoiding thermal damage, thermal deformation stress or ion contamination caused by excessively high or low temperature of the PCBA board.

[0073] In this embodiment, the present application is applicable to precision devices that are sensitive to water or have poor sealing properties, and can keep the temperature of the PCBA board within a certain temperature range, thereby avoiding thermal damage, thermal deformation stress or ion contamination caused by excessively high or low temperatures of the PCBA board, and the present application can efficiently remove a variety of contaminants of different thicknesses on the surface of the PCBA board.

[0074] like Figure 4 As shown, preferably, the cleaning nozzle 3 is provided with an annular air flow nozzle 31;

[0075] The annular air flow nozzle 31 is arranged on the cleaning nozzle 3 with the axis of the nozzle as the axis, and has an inlet and multiple nozzles. The inlet is used to introduce high-pressure gas, and the nozzles are arranged in a circular array with the axis of the nozzle of the cleaning nozzle 3 as the axis.

[0076] In this embodiment, the coupled cleaning nozzle 3 of the present application is provided with an annular airflow nozzle 31, which can eject high-pressure gas during the PCBA board cleaning process based on the annular airflow nozzle 31 which is equivalent to an annular ion wind snake, thereby removing free pollutants on the cleaning target.

[0077] In some preferred embodiments, the rotating grinding head 6 is a conical grinding head, and the tip of the cone is arranged toward the cleaning nozzle 3 .

[0078] In this embodiment, the present application sets a conical grinding head with the cone tip facing the cleaning nozzle 3, which can make the dry ice particles formed by the rotating grinding head 6 grinding the dry ice have a larger moving space, thereby increasing the spray flow rate of the dry ice particles to achieve a better cleaning effect.

[0079] In some preferred embodiments, the ice crushing pipe 4 includes a small pipe section 41 and a large pipe section 42 arranged up and down, and the transition connection portion between the small pipe section 41 and the large pipe section 42 is located at the outer periphery of the side of the rotating grinding head 6, and a gap is formed between the transition connection portion between the small pipe section 41 and the large pipe section 42 and the side of the rotating grinding head 6;

[0080] Online cleaning equipment suitable for precision devices also includes:

[0081] The first lifting mechanism 8 is fixedly connected to the rotary drive mechanism 7 and is used to drive the rotary drive mechanism 7 to lift and lower the rotary grinding head 6 to change the minimum distance between the side of the rotary grinding head 6 and the transition connection part between the small pipe section 41 and the large pipe section 42.

[0082] Specifically, since the rotating grinding head 6 is a conical grinding head, when the rotating grinding head 6 is raised or lowered, the radius of the cross-section located in the same plane as the transition connection part between the small pipe segment 41 and the large pipe segment 42 will change, so the distance between the side of the rotating grinding head 6 and the transition connection part between the small pipe segment 41 and the large pipe segment 42 will change. The present application is provided with a first lifting mechanism 8, which can change the minimum distance between the side of the rotating grinding head 6 and the transition connection part between the small pipe segment 41 and the large pipe segment 42 to change the average volume of dry ice particles formed by the rotating grinding head 6 grinding the dry ice. The dry ice particles with a larger average volume have the characteristics of high cleaning efficiency and good cleaning effect, and the dry ice particles with a smaller average volume have the characteristics of fine cleaning. Therefore, in this embodiment, the present application can adjust the average volume of the dry ice particles as needed to achieve the required cleaning effect.

[0083] In some preferred embodiments, the first lifting mechanism 8 includes:

[0084] The telescopic block 81 is detachably mounted on the ice crushing pipe 4 and fixedly connected to the rotary drive mechanism 7;

[0085] The mounting seat 82 is fixedly mounted on the cleaning nozzle 3 and is slidably connected to the telescopic block 81 .

[0086] Specifically, when it is necessary to adjust the average volume of the dry ice particles, the telescopic block 81 is removed from the ice crushing pipe 4, and the telescopic block 81 is made to slide on the mounting seat 82 to drive the rotation drive mechanism 7 and the rotating grinding head 6 to move, so as to change the gap width between the side of the rotating grinding head 6 and the corner of the inner wall of the ice crushing pipe 4 to change the average volume of the dry ice particles formed by the rotating grinding head 6 grinding the dry ice. After the adjustment is completed, the telescopic block 81 is reinstalled on the ice crushing pipe 4 to fix the rotating grinding head 6 in the up and down directions.

[0087] In this embodiment, the present application provides a telescopic block 81 and a mounting seat 82, which can conveniently change the gap width between the side of the rotating grinding head 6 and the inner wall corner of the ice crushing pipe 4 to change the average volume of dry ice particles formed by the rotating grinding head 6 grinding dry ice.

[0088] In some preferred embodiments, the online cleaning equipment for precision devices further comprises:

[0089] The horizontal conveying mechanism 9 is installed on the frame 1 and is located above the cleaning nozzle 3, and is used for carrying and horizontally conveying the PCBA board.

[0090] In this embodiment, the online cleaning equipment for precision devices of the present application is provided with a horizontal conveying mechanism 9, which can carry the PCBA board and convey the PCBA board horizontally, so as to facilitate the loading of the PCBA board to be cleaned.

[0091] In some preferred embodiments, the horizontal conveying mechanism 9 comprises:

[0092] A first transverse conveying mechanism 92 is mounted on the frame 1;

[0093] The second transverse conveying mechanism 93 is slidably mounted on the frame along the Y direction, and is used to cooperate with the first transverse conveying mechanism 92 to clamp the PCBA board and convey the PCBA board in the X direction.

[0094] Specifically, Figure 1 The directions of the arrows are the X direction and the Y direction in this application.

[0095] More specifically, the manner in which the first lateral conveying mechanism 92 and the second lateral conveying mechanism 93 convey the PCBA board in the X direction may be based on the belt conveying mechanism included in the first lateral conveying mechanism 92 and the belt conveying mechanism included in the second lateral conveying mechanism 93 conveying the PCBA board in the X direction in the same direction, or may be based on other existing conveying mechanisms included in the first lateral conveying mechanism 92 and the second lateral conveying mechanism 93 conveying the PCBA board in the X direction.

[0096] More specifically, by controlling the second transverse conveying mechanism 93 to slide along the Y direction, the distance between the second transverse conveying mechanism 93 and the first transverse conveying mechanism 92 can be adjusted, so that the second transverse conveying mechanism 93 and the first transverse conveying mechanism 92 can clamp PCBA boards of different sizes.

[0097] In this embodiment, the online cleaning equipment for precision devices of the present application is provided with a first lateral conveying mechanism 92 and a second lateral conveying mechanism 93, which can clamp PCBA boards of different sizes and facilitate loading of PCBA boards.

[0098] Preferably, the horizontal conveying mechanism 9 further comprises:

[0099] The sliding mechanism 91 is slidably mounted on the frame along the Y direction, and the second transverse conveying mechanism 93 is fixedly mounted on the sliding mechanism 91 so as to be slidably mounted on the frame along the Y direction.

[0100] In some preferred embodiments, the online cleaning equipment for precision devices further comprises:

[0101] The locking and fixing mechanism 10 is arranged above the horizontal conveying mechanism 9 and is used for temporarily locking the PCBA board to be cleaned on the horizontal conveying mechanism 9 .

[0102] In this embodiment, the online cleaning equipment for precision devices of the present application is provided with a locking and fixing mechanism 10, which can lock the PCBA board when cleaning the surface of the PCBA board to prevent the dry ice particles sprayed by the cleaning nozzle 3 from impacting the PCBA board and causing the PCBA board to shake.

[0103] In some preferred embodiments, the locking and fixing mechanism 10 includes:

[0104] A connecting frame 101 is horizontally arranged above the first transverse conveying mechanism 92 and the second transverse conveying mechanism 93;

[0105] The pressure strip assembly 103 has one end connected to the connecting frame 101;

[0106] The cylinder 102 is fixedly connected to the top of the connecting frame 101 at the bottom and fixedly connected to the frame 1 at the top, and is used to perform telescopic movement to drive the connecting frame 101 to rise and fall, so that the pressure strip assembly 103 rises and falls to press or loosen the PCBA board to be cleaned on the horizontal conveying mechanism 9.

[0107] In this embodiment, the online cleaning equipment for precision devices of the present application is provided with a connecting frame 101, a cylinder 102 and a pressure bar assembly 103, which can press or loosen the PCBA board.

[0108] like Figure 2 As shown, preferably, the pressure strip assembly 103 includes:

[0109] A connecting member 1031, one end of which is rotatably connected to the connecting frame 101;

[0110] One end of the pressure strip 1032 is fixedly connected to the connecting piece 1031 .

[0111] In this embodiment, the present application sets a connector 1031, which can rotate the connector 1031 on the connecting frame 101 to adjust the position of the pressure strip 1032 to correspond to the position of the cleaning nozzle 3, so that the pressure strip 1032 can firmly press the PCBA board during the cleaning process.

[0112] More preferably, the connecting frame 101 has a strip groove, and the connecting frame 101 is rotatably connected to one end of the connecting member 1031 based on the strip groove.

[0113] In this embodiment, the present application sets a strip groove, and the horizontal position of one end of the connecting member 1031 can be adjusted based on the strip groove to adjust the position of the pressure strip 1032 to correspond to the position of the cleaning nozzle 3, so that the pressure strip 1032 can firmly press the PCBA board during the cleaning process.

[0114] like Figure 6 As shown, in some preferred embodiments, the online cleaning equipment suitable for precision devices is connected with a negative pressure extraction mechanism 100;

[0115] The locking and fixing mechanism 10 also includes:

[0116] The negative pressure extraction member 104 is installed on the connecting frame 101 and has a cavity inside. The negative pressure extraction member 104 is used to extract pollutants and dry ice particles that impact the PCBA board to be cleaned on the horizontal conveying mechanism 9 during the cleaning process into the cavity inside the negative pressure extraction member 104;

[0117] Online cleaning equipment suitable for precision devices also includes:

[0118] One end of the negative pressure extraction pipeline 105 is communicated with the cavity inside the negative pressure extraction member 104 , and the other end is connected to the negative pressure extraction mechanism 100 .

[0119] Specifically, during the cleaning process of the PCBA board surface, the negative pressure extraction mechanism 100 is controlled to extract negative pressure, so that the dry ice particles that have impacted the PCBA board surface and the pollutants that have fallen on the PCBA board can be extracted by the negative pressure extraction mechanism 100 through the inside of the negative pressure extraction member 104 and the negative pressure extraction pipeline 105, thereby keeping the online cleaning equipment suitable for precision devices clean.

[0120] More specifically, if Figure 7 As shown, in one embodiment, one side of the negative pressure extraction member 104 has an extraction port, which can inhale the dry ice particles that have impacted the surface of the PCBA board and the pollutants that have fallen off the PCBA board.

[0121] In this embodiment, the online cleaning equipment for precision devices of the present application is provided with a negative pressure extraction member 104, which can extract dry ice particles and fallen pollutants that have impacted the surface of the PCBA board to keep the online cleaning equipment for precision devices clean.

[0122] like Figure 8 As shown, in some preferred embodiments, the online cleaning device suitable for precision devices includes a housing 20, and a frame 1 is arranged in the housing 20;

[0123] The housing 20 has openings on two side walls corresponding to the two ends of the second transverse conveying mechanism 93;

[0124] Both ends of the second transverse conveying mechanism 93 pass through the two openings respectively.

[0125] Specifically, the distance between the second lateral conveying mechanism 93 and the first lateral conveying mechanism 92 can be adjusted by simply controlling the second lateral conveying mechanism 93 to slide along the Y direction based on the opening of the side wall of the casing 20. Therefore, in this embodiment, the present application can adjust the distance between the second lateral conveying mechanism 93 and the first lateral conveying mechanism 92 outside the casing 20.

[0126] like Fig. 9 As shown, preferably, a baffle 201 is provided on the inner side wall of the housing 20 corresponding to the opening, and both ends of the second transverse conveying mechanism 93 are fixedly connected to one end of the two baffles 201 respectively.

[0127] Specifically, since an opening is provided on the inner wall of the casing 20, dry ice particles that have impacted the surface of the PCBA board and fallen contaminants may rush out of the casing 20 from the opening. Therefore, in this embodiment, the online cleaning equipment suitable for precision devices of the present application is provided with a baffle 201, and the position of the baffle 201 can be adjusted based on the positions of the two ends of the second transverse conveying mechanism 93 to avoid as much as possible the dry ice particles that have impacted the surface of the PCBA board and the fallen contaminants from rushing out of the casing 20 from the opening, thereby keeping the exterior of the casing 20 as clean as possible.

[0128] Preferably, the baffle 201 is an accordion plate.

[0129] like Fig.10 As shown, in some embodiments, the nozzle driving mechanism 2 includes:

[0130] A longitudinal conveying mechanism 21 is mounted on the frame 1;

[0131] The third transverse conveying mechanism 22 is installed on the longitudinal conveying mechanism 21, and the cleaning nozzle 3 is installed on the third transverse conveying mechanism 22. The third transverse conveying mechanism 22 is used to drive the cleaning nozzle 3 to move in the X direction, and the longitudinal conveying mechanism 21 is used to drive the third transverse conveying mechanism 22 to move in the Y direction to drive the cleaning nozzle 3 to move in the Y direction.

[0132] In this embodiment, the online cleaning equipment suitable for precision devices of the present application is provided with a longitudinal conveying mechanism 21 and a third transverse conveying mechanism 22, which can drive the cleaning nozzle 3 to move horizontally based on the longitudinal conveying mechanism 21 and the third transverse conveying mechanism 22, so that the cleaning nozzle 3 is aligned with the local area of ​​the surface of the PCBA board that needs to be cleaned.

[0133] Preferably, the nozzle driving mechanism 2 further includes:

[0134] The third lifting mechanism 23 is installed on the third transverse conveying mechanism 22. The cleaning nozzle 3 is installed on the third lifting mechanism 23. The third lifting mechanism 23 is used to drive the cleaning nozzle 3 to move up and down. The third transverse conveying mechanism 22 is used to drive the third lifting mechanism 23 to move in the X direction to drive the cleaning nozzle 3 to move in the X direction.

[0135] Specifically, if the distance between the cleaning nozzle 3 and the surface of the PCBA board is too far, the cleaning effect will be poor, and if the distance between the cleaning nozzle 3 and the surface of the PCBA board is too close, it will produce greater noise. Therefore, in this embodiment, the online cleaning equipment suitable for precision devices of the present application is provided with a third lifting mechanism 23, which can control the lifting and lowering of the cleaning nozzle 3 as needed to adjust the distance between it and the surface of the PCBA board, thereby optimizing the cleaning effect or controlling noise.

[0136] From the above, it can be seen that the present application provides an online cleaning device suitable for precision devices, which can grind dry ice into dry ice particles of different comprehensive volumes, thereby combining the advantages of dry ice particles of different volumes and can quickly, effectively and meticulously clean the surface of the PCBA board.

[0137] In the embodiments provided in the present application, it should be understood that the disclosed device can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interface, the indirect coupling or communication connection of the device or unit can be electrical, mechanical or other forms.

[0138] In addition, the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0139] Furthermore, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0140] In this document, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0141] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An online cleaning device suitable for precision devices, used for cleaning PCBA boards, characterized in that: include: Rack(1); A nozzle driving mechanism (2) is mounted on the frame (1); A cleaning nozzle (3) is mounted on the nozzle drive mechanism (2), and has a first inlet and a nozzle outlet, wherein the nozzle drive mechanism (2) is used to drive the cleaning nozzle (3) to move horizontally so that the cleaning nozzle (3) cleans the surface of the PCBA board; An ice crushing pipe (4), one end of which is connected to the first inlet of the cleaning nozzle (3), and the side of which is connected to a dry ice pipe (5) connected to the interior thereof; A rotating grinding head (6) is arranged in the ice crushing pipe (4), and its rotating axis is eccentric to the ice crushing pipe (4); the connection between the dry ice pipe (5) and the ice crushing pipe (4) is located on the side of the rotating grinding head (6) away from the cleaning nozzle (3); the rotating grinding head (6) is a conical grinding head, and its conical tip is arranged toward the cleaning nozzle (3); A rotary drive mechanism (7), the output end of which is connected to the rotary grinding head (6) and is used to drive the rotary grinding head (6) to rotate; The ice crushing pipe (4) comprises a small pipe section (41) and a large pipe section (42) arranged in an upper and lower manner, wherein a transition connection portion between the small pipe section (41) and the large pipe section (42) is located on the outer periphery of the side of the rotating grinding head (6), and a gap is formed between the transition connection portion between the small pipe section (41) and the large pipe section (42) and the side of the rotating grinding head (6); The online cleaning equipment suitable for precision devices also includes: A first lifting mechanism (8) is fixedly connected to the rotary drive mechanism (7) and is used to drive the rotary drive mechanism (7) to lift and lower the rotary grinding head (6) so as to change the minimum distance between the side of the rotary grinding head (6) and the transition connection portion between the small pipe section (41) and the large pipe section (42).

2. The online cleaning equipment suitable for precision devices according to claim 1, characterized in that: The first lifting mechanism (8) comprises: A telescopic block (81) is detachably mounted on the ice crushing pipe (4) and fixedly connected to the rotary drive mechanism (7); The mounting seat (82) is fixedly mounted on the cleaning nozzle (3) and is slidably connected to the telescopic block (81).

3. The online cleaning equipment suitable for precision devices according to claim 1, characterized in that: The online cleaning equipment suitable for precision devices also includes: A horizontal conveying mechanism (9) is mounted on the frame (1) and is located above the cleaning nozzle (3), and is used to carry and horizontally convey the PCBA board.

4. The online cleaning equipment suitable for precision devices according to claim 3, characterized in that: The horizontal conveying mechanism (9) comprises: A first transverse conveying mechanism (92) mounted on the frame (1); The second transverse conveying mechanism (93) is slidably mounted on the frame (1) along the Y direction, and is used to cooperate with the first transverse conveying mechanism (92) to clamp the PCBA board and convey the PCBA board in the X direction.

5. The online cleaning equipment suitable for precision devices according to claim 3, characterized in that: The online cleaning equipment suitable for precision devices also includes: The locking and fixing mechanism (10) is arranged above the horizontal conveying mechanism (9) and is used to temporarily lock the PCBA board to be cleaned on the horizontal conveying mechanism (9).

6. The online cleaning equipment suitable for precision devices according to claim 5, characterized in that: The locking and fixing mechanism (10) comprises: A connecting frame (101) is horizontally arranged above the horizontal conveying mechanism (9); A pressure strip assembly (103), one end of which is connected to the connecting frame (101); The cylinder (102) has a bottom fixedly connected to the top of the connecting frame (101) and a top fixedly connected to the frame (1), and is used to perform telescopic movement to drive the connecting frame (101) to move up and down, so that the pressure strip assembly (103) moves up and down to press or release the PCBA board to be cleaned on the horizontal conveying mechanism (9).

7. The online cleaning device for precision devices according to claim 6, characterized in that: The online cleaning device suitable for precision devices is connected to a negative pressure extraction mechanism (100); The locking and fixing mechanism (10) further comprises: A negative pressure extraction member (104) is mounted on the connecting frame (101) and has a cavity therein, wherein the negative pressure extraction member (104) is used to extract pollutants and dry ice particles that impact the PCBA board to be cleaned on the horizontal conveying mechanism (9) during the cleaning process into the cavity inside the negative pressure extraction member (104); The online cleaning equipment suitable for precision devices also includes: A negative pressure extraction pipeline (105) has one end in communication with the cavity inside the negative pressure extraction member (104), and the other end connected to the negative pressure extraction mechanism (100).

8. The online cleaning equipment suitable for precision devices according to claim 4, characterized in that: The online cleaning device suitable for precision devices comprises a housing (20), wherein the frame (1) is arranged in the housing (20); The housing (20) has openings on two side walls corresponding to the two ends of the second transverse conveying mechanism (93); Two ends of the second transverse conveying mechanism (93) pass through two openings respectively.

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