An inkjet device for preventing ink leakage and ink sticking for copper tube flaw detection

Abstract

The present invention belongs to the field of copper tube processing technology, and specifically discloses an inkjet device for preventing ink leakage and ink sticking for copper tube flaw detection, comprising a controller, an inkjet housing, and an inkjet mechanism and an isolation mechanism connected to the controller. Both sides of the inkjet housing are respectively provided with a first through hole for passing the copper tube; the inkjet mechanism is located in the inkjet housing and is used to spray ink on the copper tube; the isolation mechanism comprises an isolation sleeve, a transverse drive structure, and a vertical adjustment structure; the copper tube can pass through the isolation sleeve, and the vertical adjustment structure is used to adjust the vertical position of the copper tube; the transverse drive structure is used to drive the isolation sleeve to move transversely, thereby isolating and opening the inkjet position on the copper tube. This technical solution is to get rid of the misunderstanding of the ink leakage prevention device to achieve the effect of preventing ink from sticking to the surface of the copper tube. When the isolation mechanism is in the isolation normally closed state, if the inkjet mechanism leaks ink when it is not in the marking period, the isolation mechanism can effectively isolate the ink to prevent the ink from being directly sprayed onto the surface of the copper tube to form sticky ink.

Description

Technical Field

[0001] The invention belongs to the technical field of copper tube processing, and in particular relates to an inkjet device for preventing ink leakage and ink sticking for flaw detection of copper tubes. Background Art

[0002] Refrigeration copper tubes are subject to inevitable defects during the production process. If these defects are not identified and used routinely, they can lead to leaks in the refrigeration system. All refrigeration copper tubes undergo flaw detection before delivery. After flaw detection, defects are detected using a flaw detector. A spray gun or other pneumatic atomizer is then used to atomize ink, which is then sprayed onto the copper tube surface for adhesion. The ink adheres to the area of the copper tube surface where the defect is located.

[0003] The flaw marking tool typically uses two to three spray guns to cover the copper tube's 360° circumference corresponding to the defect. Black ink or another ink clearly distinguishable from the copper tube's color is typically used to mark the defect. The marked section of the copper tube is then separated and discarded during use to prevent unintended use of the defective copper tube, which could lead to leaks and other problems.

[0004] Even with good process maintenance and good product inspection, the long-term use of the flaw detection spray gun will cause abnormalities or failures under the current high-speed production rhythm of large quantities of products. The ink will leak unexpectedly through the nozzle of the spray gun and then directly hit the surface of the copper tube and adhere to the surface of the copper tube, generally showing linear adhesion or point-shaped local surface adhesion.

[0005] The location of ink adhesion varies depending on the angle of the spray gun's atomization spray. For example, if the area where ink adheres to the copper tube surface is located on the lower or inner side of the copper tube coil, this type of abnormality cannot be effectively identified and detected, and thus will be transferred to the customer's site, causing various welding defects and leakage.

[0006] The current solutions to prevent this type of ink leakage in the industry are:

[0007] 1. Establish specifications and carry out effective maintenance of the spray gun to prevent unexpected ink leakage from the spray gun and adhesion to the copper tube surface;

[0008] 2. After the copper tube is unloaded, the inkjet surface is inspected for inkjet quality. This inspection is generally performed from two perspectives: a. Checking the area and length of inkjet coverage; b. Checking to see if any non-NDT inkjet ink has reached the copper tube surface in unsprayed areas. Both inspections typically involve manual visual inspection and automated comparison and identification of inkjet quality. Both methods have drawbacks: manual identification cannot effectively identify ink leaks located on the underside or inside of the coil; and automated comparison and identification cannot effectively identify inkjet quality when the ink coverage area or color is insufficiently different from the copper tube color.

[0009] The state where ink leaks from the spray gun and adheres to the surface of the copper tube is precisely the problem that cannot be solved by the above-mentioned inspection behavior or means of preventing abnormalities. Summary of the Invention

[0010] The purpose of the present invention is to provide an inkjet device for preventing ink leakage and ink sticking for copper tube flaw detection, so as to solve the problem that ink leakage from the spray gun causes ink to adhere to the surface of the copper tube, resulting in poor welding and even leakage.

[0011] In order to achieve the above-mentioned purpose, the technical solution of the present invention is: an inkjet device for preventing ink leakage and ink sticking for copper tube flaw detection, comprising a controller, an inkjet box, and an inkjet mechanism and an isolation mechanism connected to the controller, wherein both sides of the inkjet box are respectively provided with a first through hole for passing the copper tube; the inkjet mechanism is located in the inkjet box and is used to spray ink on the copper tube; the isolation mechanism comprises an isolation sleeve, a transverse drive structure and a vertical adjustment structure; the copper tube can pass through the isolation sleeve, and the vertical adjustment structure is used to adjust the vertical position of the copper tube; the transverse drive structure is used to drive the isolation sleeve to move laterally to achieve isolation and opening of the inkjet position on the copper tube.

[0012] Furthermore, the isolation mechanism also includes a positioning structure, which includes a first positioning member and a second positioning member. The first positioning member is installed on the inner side of the inkjet box body. The first positioning member is used to position the lateral position of the isolation sleeve, and the second positioning member is used to position the stroke of the lateral drive structure.

[0013] Furthermore, the vertical adjustment structure includes a connecting rod, a screw, an upper nut, a lower nut and a connecting frame. The transverse driving structure is connected to the connecting frame. A vertical second through hole is provided on the connecting frame. The screw can pass through the second through hole. The upper and lower sides of the connecting rod are respectively connected to the screw and the isolation sleeve; the upper nut and the lower nut are respectively located on the upper and lower sides of the connecting frame and are threadedly connected to the screw; the end face area of the upper nut and the lower nut is larger than the opening area of the second through hole.

[0014] Furthermore, a mounting frame is installed on the flaw detection device, and the mounting frame is used to install the transverse drive structure. The mounting frame is also provided with a guide rod, and the connecting frame is provided with a transverse third through hole, and the guide rod is slidably connected in the third through hole.

[0015] Furthermore, it also includes an ink recovery mechanism; the ink cartridge recovery device includes a funnel-shaped recovery tube body, the large-diameter end of the recovery tube body is located below the inkjet position and the nozzle of the inkjet mechanism; a fourth through hole is provided at the bottom of the inkjet box body, the small-diameter end of the recovery tube body passes through the fourth through hole and is fixed in the fourth through hole; the small-diameter end of the recovery tube body is provided with a first valve.

[0016] Furthermore, the recovery tube body and the isolation sleeve are both made of hydrophobic and oleophobic materials.

[0017] Furthermore, it also includes a cleaning mechanism for cleaning the inkjet box, and the cleaning mechanism is located below the horizontal driving structure; the inkjet box is a cylindrical structure; the cleaning mechanism includes a brushing structure, a vertical driving structure and a rotary driving structure, the vertical driving structure is used to drive the brushing structure to move vertically, and the rotary driving structure is used to drive the brushing structure to rotate along the inner wall of the inkjet box, and the brushing structure is used to brush the inner wall of the inkjet box; an annular water outlet groove is provided on the upper side of the inkjet box, and a plurality of water outlets are provided on the water outlet groove; a water leakage port is provided at the bottom of the inkjet box, and a second valve is provided on the water leakage port.

[0018] Furthermore, the rotary drive structure includes an inner gear ring, a gear, a mounting seat and a rotary drive member, the mounting seat is fixed on the vertical drive structure, and the mounting seat is provided with two groups and is respectively located on both sides of the inkjet box body; an arc groove is provided on the mounting seat, and the outer side of the inner gear ring is slidably connected in the arc groove; the gear is engaged with the inner gear ring; a mounting rod is provided on the mounting seat, and the rotary drive member is installed on the mounting rod, and the rotary drive member is used to drive the gear to rotate; a fixing rod is installed on the lower side of the inner gear ring, and the lower side of the fixing rod is connected to the brushing structure.

[0019] Furthermore, the bottom of the inkjet housing is configured as an inclined structure, and the water leakage port is located on the lower side of the inclined structure.

[0020] Furthermore, the brushing structure includes an upper cleaning brush, a lower cleaning brush, and an elastic member connecting the upper cleaning brush and the lower cleaning brush.

[0021] The working principle of this technical solution is as follows: Under normal conditions, the transverse drive structure drives the isolation sleeve to isolate the position on the inkjet mechanism's inkjet circuit. When the flaw detection device detects a defect signal, it sends the signal to the controller, which controls the movement of the transverse drive structure, causing the isolation sleeve to fully open and then activate the inkjet mechanism to spray ink. If the isolation sleeve position does not reach the set displacement (position) or the transverse drive structure does not reach the set stroke, the first and second positioning members generate electrical signals, which interact with the device, triggering an alarm and shutting down the device.

[0022] The ink leaked from the nozzle of the inkjet mechanism or part of the ink ejected from the nozzle will flow into the recovery tube body for collection. The first valve can be opened to collect the ink for recycling.

[0023] Some ink ejected from the nozzles will splash onto the side walls of the inkjet housing. Therefore, after flaw detection is complete, the cleaning mechanism can be activated to clean the inkjet housing. The water outlet is turned on, and water flows out from several outlets and down the inner wall of the inkjet housing. The controller activates the rotary drive mechanism and the vertical drive mechanism. The rotary drive member rotates the gears, which in turn rotate the inner ring gear. This rotation of the inner ring gear drives the fixed rod and the scrubbing mechanism to rotate along the inner wall of the inkjet housing to clean it. Simultaneously, the vertical drive mechanism slowly moves the mounting base downward, which in turn drives the rotary drive mechanism and the scrubbing mechanism downward, thereby providing a relatively comprehensive cleaning of the inner wall of the inkjet housing.

[0024] The beneficial effects of this technical solution are:

[0025] ① This technical solution is to get rid of the misunderstanding of the ink leakage prevention device to achieve the effect of preventing ink from sticking to the copper tube surface. When the isolation mechanism is in the isolation normally closed state, if the inkjet mechanism leaks ink when it is not in the marking period, the isolation mechanism can effectively isolate the ink and prevent the ink from being directly sprayed onto the copper tube surface to form sticky ink.

[0026] ② When the position of the isolation sleeve does not reach the set displacement (position) or the lateral drive structure does not reach the set stroke, the first positioning member and the second positioning member will give an electrical signal, which will be linked with the equipment to issue an alarm and shut down the equipment at the same time, which can effectively avoid the occurrence of inkjet failure caused by the failure of the isolation mechanism to work effectively due to surface defects of the copper tube.

[0027] ③ This technical solution provides a recovery tube body, which can collect the ink splashed by the inkjet mechanism and the ink leaked due to failure of the inkjet mechanism.

[0028] ④ This technical solution incorporates a cleaning mechanism that allows for timely cleaning of the inkjet housing. The bottom of the housing is angled to allow for the complete flow of cleaning water. The brushing mechanism, comprising upper and lower brushes and an elastic member, adapts to the tilted bottom structure of the housing, ensuring a more thorough cleaning of the housing.

[0029] ⑤The recovery tube and isolation sleeve are made of hydrophobic and oleophobic materials, which can facilitate the flow of ink. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic structural diagram of an inkjet device for preventing ink leakage and ink sticking for flaw detection of copper tubes according to the present invention;

[0031] Figure 2 for Figure 1 A top view of the inkjet mechanism;

[0032] Figure 3 for Figure 1 A front sectional view of the inkjet mechanism;

[0033] Figure 4 for Figure 1 Side cross-sectional view of the inkjet mechanism. DETAILED DESCRIPTION

[0034] The following is further described in detail through specific implementation methods:

[0035] The figure marks in the drawings of the specification include: flaw detection device 1, inkjet box body 2, copper tube 3, horizontal drive structure 4, mounting frame 5, connecting rod 6, screw 7, connecting frame 8, upper nut 9, lower nut 10, spray gun 11, isolation sleeve 12, recovery tube body 13, first through hole 14, first valve 15, tilting structure 16, second valve 17, vertical drive structure 18, mounting seat 19, mounting rod 20, rotary drive member 21, inner ring gear 22, fixing rod 23, upper cleaning brush 24, lower cleaning brush 25, elastic member 26, water outlet trough 27.

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] The embodiment is basically as shown in the attached Figure 1-4 As shown: an inkjet device for preventing ink leakage and ink sticking for copper tube flaw detection, such as Figure 1 、 2As shown, the device comprises a controller, an inkjet housing 2, and an inkjet mechanism, an ink recovery mechanism, a cleaning mechanism, and an isolation mechanism connected to the controller. The left and right sides of the inkjet housing 2 are each provided with a first through-hole 14 for passing the copper tube 3. The inkjet mechanism is located within the inkjet housing 2 and is used to spray ink onto the copper tube 3. The inkjet mechanism includes two sets of spray guns 11, which are symmetrically arranged with their nozzles aligned with the copper tube 3.

[0038] like Figure 1 、 2 As shown, the isolation mechanism includes an isolation sleeve 12, a positioning structure, a transverse drive structure 4, and a vertical adjustment structure. The copper tube 3 can pass through the isolation sleeve 12. The vertical adjustment structure is used to adjust the vertical position of the copper tube 3. The vertical adjustment structure includes a connecting rod 6, a screw 7, an upper nut 9, a lower nut 10, and a connecting frame 8. The transverse drive structure 4 is connected to the connecting frame 8. The connecting frame 8 is provided with a second vertical through-hole through which the screw 7 can pass. The upper and lower sides of the connecting rod 6 are connected to the screw 7 and the isolation sleeve 12, respectively. The upper nut 9 and the lower nut 10 are located on the upper and lower sides of the connecting frame 8 and are threadedly connected to the screw 7. The end surface area of the upper nut 9 and the lower nut 10 is larger than the opening area of the second through-hole. In this embodiment, two sets of connecting rods 6, screws 7, upper nuts 9, and lower nuts 10 are provided. The transverse drive structure 4 is used to drive the isolation sleeve 12 to move horizontally, thereby isolating and opening the inkjet position on the copper tube 3. The transverse drive structure 4 can use a linear drive component such as a cylinder or a linear push rod. The flaw detection device 1 is provided with a mounting frame 5 for mounting the transverse driving structure 4. The mounting frame 5 is further provided with a guide rod. The connecting frame 8 is provided with a transverse third through hole, and the guide rod is slidably connected in the third through hole.

[0039] The positioning structure includes a first positioning member and a second positioning member. The first positioning member and the second positioning member can adopt distance sensors. The first positioning member is installed on the inner side of the inkjet box body 2. The first positioning member is used to position the lateral position of the isolation sleeve 12. The second positioning member is used to position the stroke of the lateral drive structure 4. The second positioning member can be installed on the mounting frame 5 to sense the distance of the connecting frame 8.

[0040] like Figure 3 As shown, the ink cartridge recovery device includes a funnel-shaped recovery tube 13, the large-diameter end of which is located below the inkjet nozzle and the nozzle of the inkjet mechanism. A fourth through-hole is provided at the bottom of the inkjet housing 2, through which the small-diameter end of the recovery tube 13 passes and is secured. A first valve 15 is provided at the small-diameter end of the recovery tube 13. Both the recovery tube 13 and the isolation sleeve 12 are made of hydrophobic and oleophobic materials.

[0041] like Figure 4As shown, the cleaning mechanism is used to clean the inkjet housing 2 and is located below the transverse drive structure 4. The inkjet housing 2 is a cylindrical structure. The cleaning mechanism includes a scrubbing mechanism, a vertical drive structure 18, and a rotary drive structure. The vertical drive structure 18 is used to drive the scrubbing mechanism vertically. The vertical drive structure 18 can be a linear drive element such as a cylinder or a linear push rod. The rotary drive structure is used to drive the scrubbing mechanism to rotate along the inner wall of the inkjet housing 2. The rotary drive structure includes an inner ring gear 22, a gear, a mounting base 19, and a rotary drive element 21. The mounting base 19 is fixed to the vertical drive structure 18. There are two sets of mounting bases 19, one on each side of the inkjet housing 2. The mounting base 19 has an arcuate groove, and the outer portion of the inner ring gear 22 slides into the groove. The gear meshes with the inner ring gear 22. The mounting base 19 is provided with a mounting rod 20, and a rotary drive element 21 is mounted on the mounting rod 20. The rotary drive element 21 drives the gear to rotate. A fixed rod 23 is mounted on the underside of the inner gear ring 22. The underside of the fixed rod 23 is connected to a brushing structure. In this embodiment, two sets of fixed rods 23 and brushing structures are provided. The bottom of the inkjet housing 2 is provided with an inclined structure 16, with a water leakage port located on the lower side of the inclined structure 16. The brushing structure is used to brush the inner wall of the inkjet housing 2. The brushing structure includes an upper cleaning brush 24, a lower cleaning brush 25, and an elastic member 26 connecting the upper and lower cleaning brushes 24, 25. The elastic member 26 is specifically a spring. An annular water outlet trough 27 is provided on the upper side of the inkjet housing 2. Several water outlets are provided on the side of the water outlet trough 27. A cavity connected to the water outlet is provided within the inkjet housing 2. The cavity is connected to a water inlet pipe, through which water can be injected. A water leakage port is provided at the bottom of the inkjet housing 2, and a second valve 17 is provided on the leakage port.

[0042] The specific implementation process is as follows:

[0043] Under normal conditions, the transverse drive structure 4 drives the isolation sleeve 12 to isolate the inkjet mechanism's inkjet circuit. When the flaw detection device 1 detects a defect signal, it sends the signal to the controller, which controls the movement of the transverse drive structure 4, causing the isolation sleeve 12 to fully open and subsequently activate the inkjet mechanism to spray ink. If the isolation sleeve 12 does not reach the set displacement (position) or the transverse drive structure 4 does not reach the set stroke, the first and second positioning members generate electrical signals, interlocking with the device to generate an alarm and shut down the device.

[0044] The ink leaked from the nozzle of the inkjet mechanism or part of the ink ejected from the nozzle will flow into the recovery tube body 13 for collection. The first valve 15 can be opened to collect the ink for recycling.

[0045] Some of the ink ejected from the nozzle will splash onto the side walls of the inkjet housing 2. Therefore, after the flaw detection is completed, the cleaning mechanism can be activated to clean the inkjet housing 2. The water outlet device is turned on, and water is injected into the cavity. Water flows out from several outlets and flows downward along the inner wall of the inkjet housing 2. The controller activates the rotary drive structure and the vertical drive structure 18. The rotary drive member 21 drives the gear to rotate, which in turn drives the inner ring gear 22 to rotate. The rotation of the inner ring gear 22 drives the fixed rod 23 and the scrubbing structure to rotate along the inner wall of the inkjet housing 2 to clean it. At the same time, the vertical drive structure 18 drives the mounting seat 19 to move slowly downward, and the mounting seat 19 drives the rotary drive structure and the scrubbing structure to move downward, thereby achieving a relatively comprehensive cleaning of the inner wall of the inkjet housing 2.

[0046] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0047] The above is only an embodiment of the present invention. Common knowledge such as the known specific structures and characteristics in the scheme is not described in detail here. Ordinary technicians in the field are aware of all common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the field can improve and implement this scheme in combination with their own abilities under the inspiration given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An inkjet device for preventing ink leakage and ink sticking for copper tube flaw detection, characterized in that: The invention comprises a controller, an inkjet housing (2), an inkjet mechanism, an ink recovery mechanism and an isolation mechanism connected to the controller, wherein first through holes (14) for passing a copper tube (3) are respectively provided on both sides of the inkjet housing (2); the inkjet mechanism is located in the inkjet housing (2) and is used to spray ink on the copper tube (3); the isolation mechanism comprises an isolation sleeve (12), a positioning structure, a transverse driving structure (4) and a vertical adjustment structure; the copper tube (3) can pass through the isolation sleeve (12), and the vertical adjustment structure is used to adjust the vertical position of the copper tube (3); the transverse driving structure (4) is used to drive the isolation sleeve (12) to move transversely to achieve isolation of the inkjet position on the copper tube (3) and opening; the positioning structure includes a first positioning member and a second positioning member, the first positioning member is installed on the inner side of the inkjet housing (2), the first positioning member is used to position the lateral position of the isolation sleeve (12), and the second positioning member is used to position the stroke of the lateral drive structure (4); the ink recovery mechanism includes a funnel-shaped recovery tube body (13), the large diameter end of the recovery tube body (13) is located below the inkjet position and the inkjet mechanism nozzle; a fourth through hole is provided at the bottom of the inkjet housing (2), the small diameter end of the recovery tube body (13) passes through the fourth through hole and is fixed in the fourth through hole; the small diameter end of the recovery tube body (13) is provided with a first valve (15).

2. The inkjet device for preventing ink leakage and ink sticking for copper tube flaw detection according to claim 1, characterized in that: The vertical adjustment structure comprises a connecting rod (6), a screw rod (7), an upper nut (9), a lower nut (10) and a connecting frame (8); the transverse driving structure (4) is connected to the connecting frame (8); a vertical second through hole is provided on the connecting frame (8); the screw rod (7) can pass through the second through hole; the upper and lower sides of the connecting rod (6) are respectively connected to the screw rod (7) and the isolation sleeve (12); the upper nut (9) and the lower nut (10) are respectively located on the upper and lower sides of the connecting frame (8) and are threadedly connected to the screw rod (7); the end surface areas of the upper nut (9) and the lower nut (10) are larger than the opening area of the second through hole.

3. The inkjet device for preventing ink leakage and ink sticking for copper tube flaw detection according to claim 2, characterized in that: A mounting frame (5) is installed on the flaw detection device (1), and the mounting frame (5) is used to install the transverse drive structure (4). A guide rod is also provided on the mounting frame (5), and a transverse third through hole is provided on the connecting frame (8), and the guide rod is slidably connected in the third through hole.

4. The inkjet device for preventing ink leakage and ink sticking for copper tube flaw detection according to claim 1, characterized in that: The recovery tube body (13) and the isolation sleeve (12) are both made of hydrophobic and oleophobic materials.

5. The inkjet device for preventing ink leakage and ink sticking for copper tube flaw detection according to claim 1, characterized in that: The invention also includes a cleaning mechanism for cleaning the inkjet housing (2), wherein the cleaning mechanism is located below the transverse drive structure (4); the inkjet housing (2) is a cylindrical structure; the cleaning mechanism includes a brushing structure, a vertical drive structure (18) and a rotary drive structure, wherein the vertical drive structure (18) is used to drive the brushing structure to move vertically, and the rotary drive structure is used to drive the brushing structure to rotate along the inner wall of the inkjet housing (2), and the brushing structure is used to brush the inner wall of the inkjet housing (2); an annular water outlet groove (27) is provided on the upper side of the inkjet housing (2), and a plurality of water outlets are provided on the water outlet groove (27); a water leakage port is provided at the bottom of the inkjet housing (2), and a second valve (17) is provided on the water leakage port.

6. The inkjet device for preventing ink leakage and ink sticking for copper tube flaw detection according to claim 5, characterized in that: The rotary drive structure comprises an inner gear ring (22), a gear, a mounting seat (19) and a rotary drive member (21), wherein the mounting seat (19) is fixed on the vertical drive structure (18), and the mounting seat (19) is provided with two groups and is respectively located on both sides of the inkjet box (2); an arc groove is provided on the mounting seat (19), and the outer portion of the inner gear ring (22) is slidably connected in the arc groove; the gear is engaged with the inner gear ring (22); a mounting rod (20) is provided on the mounting seat (19), and the rotary drive member (21) is mounted on the mounting rod (20), and the rotary drive member (21) is used to drive the gear to rotate; a fixed rod (23) is installed on the lower side of the inner gear ring (22), and the lower side of the fixed rod (23) is connected to the brushing structure.

7. The inkjet device for preventing ink leakage and ink sticking for copper tube flaw detection according to claim 6, characterized in that: The bottom of the inkjet box (2) is configured as an inclined structure (16), and the water leakage port is located on the lower side of the inclined structure (16).

8. The inkjet device for preventing ink leakage and ink sticking for copper tube flaw detection according to claim 7, characterized in that: The brushing structure comprises an upper cleaning brush (24), a lower cleaning brush (25), and an elastic member (26) connecting the upper cleaning brush (24) and the lower cleaning brush (25).

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