An online microcrack detection device for bottle body based on high voltage discharge

Abstract

This invention provides an online bottle micro-crack detection device based on high-voltage discharge, comprising a frame, a central rotating component, a bottle holder rotation drive assembly, a lower cam assembly, a conveyor chain, an inlet star wheel assembly, and an outlet star wheel assembly. The central rotating component is rotatably connected to the frame and has several crack detection units mounted on it, which rotate together with the central rotating component. Each crack detection unit includes a bottle holder assembly, a discharge assembly, a water spray rod assembly, and a bottle neck pressing assembly. The rotation drive assembly drives the bottle holder assembly to rotate, and the lower cam assembly raises and lowers the bottle holder on it as the central rotating component rotates. This invention, through the cooperation of the central rotating component and the crack detection units, uses the bottle holder lifting assembly, the discharge assembly, and the water spray rod lifting assembly to spray water into the bottle, converting the bottle into a conductor. The discharge assembly discharges to detect the potential difference on the bottle. When a crack exists on the bottle, a potential difference is detected, thus indicating the presence of a crack.

Description

[0001] This application is a divisional application of application number 202211035377.1, filed on August 26, 2022, entitled "An Online Bottle Microcrack Detection Device Based on High Voltage Discharge". Technical Field

[0002] This invention relates to the field of quality inspection technology, and in particular to an online bottle microcrack detection device based on high-voltage discharge. Background Technology

[0003] Glass-ceramic bottles are popular with consumers, but they are prone to microcracks due to manufacturing processes and transportation. These microcracks range from a few micrometers to several hundred micrometers in size, and over time, the liquid inside the bottle can easily leak out. Microcracks in glass-ceramic bottles are difficult to observe with the human eye or detect with a camera. Currently, most microcrack detection devices are offline or experimental; there is no fully automated, online microcrack detection machine specifically designed for glass-ceramic bottles. Summary of the Invention

[0004] The purpose of this invention is to provide an online bottle microcrack detection device based on high-voltage discharge, which can detect whether there are cracks in the bottle body by potentiometric method, and can realize online automatic detection on the factory production line, which greatly improves the control of bottle body quality, reduces the losses caused by bottle body cracks, and has significant economic benefits. This invention provides an online bottle microcrack detection device based on high-voltage discharge, comprising a frame, a central rotating component, a self-rotating drive assembly, a lower cam component, a conveyor chain, an inlet star wheel component, an outlet star wheel component, a screw spacing component, and a guide component. The central rotating component is rotatably connected to the frame and is provided with a plurality of crack detection units. The self-rotating drive assembly, the lower cam component, the conveyor chain, the inlet star wheel component, the outlet star wheel component, the screw spacing component, and the guide component are connected to the frame.

[0005] Furthermore, the crack detection unit includes a bottle support assembly, a discharge assembly, a water spray rod assembly, and a bottle mouth pressing assembly. The bottle support assembly is liftable and rotatable. The discharge assembly and the water spray rod assembly are fixed on the central rotating component, and the bottle mouth pressing assembly is liftable.

[0006] Furthermore, the bottle holder assembly includes an insulating base, a bearing fixedly connected above the insulating base, and a bottle holder fixedly connected above the bearing. Both the bottle holder and the insulating base are fixedly connected to the inner ring of the bearing. A bottle holder insulating sleeve is fixedly fitted above the bottle holder. A first bearing seat is fixedly connected to the outer ring of the bearing. A spring plunger is vertically mounted on the first bearing seat. An insulating connecting block is also fixedly connected to the distal end of the first bearing seat. A linear bearing is fixedly connected to the other side of the insulating connecting block. The linear bearing is slidably sleeved on a guide shaft. One end of the guide shaft is fixed to a central rotating component. The guide shaft is parallel to the central axis of the bottle holder.

[0007] Furthermore, the bottle holder assembly has a second bearing seat in the middle, which is fixedly connected to the central rotating component. A spline sleeve is connected to the second bearing seat via a bearing. The spline sleeve is rotatable relative to the second bearing seat, and a spline shaft is located inside the spline sleeve, with the spline sleeve and the spline shaft in sliding engagement. A synchronous pulley is also fixed to the spline sleeve. The top of the spline shaft is fixedly connected to an insulating seat. A bearing seat is connected to the bottom of the spline shaft via a bearing. Guide rods are slidably connected to both sides of the bearing seat, and the upper ends of the guide rods are fixedly connected to the central rotating component. A first roller is also provided on the bearing seat. The axis of the first roller is perpendicular to the axis of the spline shaft.

[0008] Furthermore, the bottle-pressing assembly includes a guide rod, which is vertically positioned. A guide sleeve is slidably fitted onto the guide rod, and the guide sleeve is fixedly connected to the central rotating component. A lifting plate is provided on the guide rod, located below the guide sleeve. A bottle-pressing sleeve is provided on one side of the lifting plate, and the axis of the bottle-pressing sleeve is parallel to the axis of the guide rod. A roller mounting seat is provided at the top of the guide rod, and a second roller is rotatably mounted on the roller mounting seat via a bearing. The axis of the second roller is parallel to the axis of the bottle-pressing sleeve.

[0009] Furthermore, the water spray rod assembly includes a fixing head, which is fixed to a central rotating component. The lower end of the fixing head is fixedly connected to both a water spray rod and an inner liner tube, with the inner liner tube positioned inside the water spray rod. The water spray rod is a tubular structure with several small holes arranged in a straight line on its wall, the center lines of which are perpendicular to the center line of the water spray rod. The bottom end of the water spray rod is sealed. A gap is left between the lower end of the inner liner tube and the lower end of the water spray rod. A water outlet is located above the fixing head, and a water inlet is located on the side of the fixing head.

[0010] Furthermore, the lower cam component is located at the bottom of the central rotating component and is arranged coaxially with it, and the first roller is in tangential contact with the lower cam.

[0011] Furthermore, the discharge assembly includes an electrode holder and a discharge electrode. The electrode holder is fixedly connected to the central rotating component. The electrode has a shape similar to that of the bottle and is plate-shaped. The electrode is arranged on the outside of the bottle and on the central cross-section of the bottle. The side of the electrode closest to the bottle has densely serrated edges. The discharge electrode and the spring plunger are located on the same vertical plane. The electrode holder is made of an insulating material, which may be polytetrafluoroethylene (PTFE).

[0012] Furthermore, the self-rotation drive assembly includes a servo motor, a drive wheel, a transition wheel, a timing belt, and a tension wheel. The axes of the drive wheel, the transition wheel, and the tension wheel are all perpendicular to the horizontal plane of the frame. The drive wheel, the transition wheel, and the tension wheel are connected to the frame, and the servo motor is connected to the bottom of the drive wheel. The timing belt cooperates with the timing pulley of the bottle holder assembly.

[0013] Furthermore, the central rotating component is also equipped with an electrical cabinet and a water tank. The electrical cabinet is electrically connected to the discharge assembly, and the water tank is connected to the spray bar. A slewing bearing is also provided at the bottom of the central rotating component, and a central gear is fixedly connected to the slewing bearing. The central gear is driven to rotate by a motor, which is fixed to the frame. A slip ring is also connected to the top of the central rotating component, and the slip ring is used to electrically connect the external electrical control cabinet to the electrical cabinet on the central rotating component.

[0014] The technical solution of this invention, through the cooperation of a central rotating component and a crack detection unit, achieves water spraying into the bottle through a bottle holder lifting assembly, a discharge assembly, and a water spray rod lifting assembly. While the bottle rotates at high speed, the water spray rod assembly sprays water into the bottle, converting the bottle into a conductor. At the same time, the discharge assembly discharges to detect the potential difference on the bottle body. When there is a crack on the bottle body, there is a potential difference, thereby detecting whether there is a crack on the bottle body. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the bottle holder assembly of the present invention; Figure 3 This is a cross-sectional view of the bottle holder assembly of the present invention; Figure 4This is a schematic diagram of the bottle neck assembly of the present invention; Figure 5 This is a cross-sectional view of the bottle neck assembly of the present invention; Figure 6 This is a schematic diagram of the structure of the discharge assembly of the present invention; Figure 7 This is a schematic diagram of the self-rotation drive component of the present invention; Figure 8 This is a cross-sectional view of the crack detection unit of the present invention; Figure 9 This is a cross-sectional view of the water spray bar assembly of the present invention; Figure 10 This is a schematic diagram of the water spray bar assembly structure of the present invention; Explanation of reference numerals in the attached figures: 1-Bottle neck assembly; 101-Guide rod; 102-Guide sleeve; 103-Lifting plate; 104-Bottle neck sleeve; 105-Linear bearing; 106-Roller mounting seat; 107-Second roller; 2-Discharge assembly; 201-Electrode holder; 202-Discharge electrode; 3-Bottle support assembly; 301-Insulating seat; 302-Bottle support; 303-Bottle support insulating sleeve; 304-Spring plunger; 305-Insulating connecting block; 306-Guide shaft; 307-Fixing plate; 308-Splined shaft; 309-Second bearing seat; 310-Synchronous belt pulley; 311-Third bearing seat; 312-First roller ; 4-Frame; 5-Self-rotation drive assembly; 501-Servo motor; 502-Drive wheel; 503-Transition wheel; 504-Synchronous belt; 505-Tensioning wheel; 6-Screw pitching assembly; 7-Center motor; 8-Conveyor chain; 9-Bottle inlet star wheel assembly; 10-Center rotating assembly; 11-Electrical cabinet; 12-Water tank; 13-Slip ring; 14-Bottle outlet star wheel assembly; 15-Lower cam assembly; 16-Guide assembly; 17-Water spray bar assembly; 18-Bottle body; 601-Fixing head; 602-Water spray bar; 603-Small hole; 604-Inner liner tube; 605-Water inlet hole; 606-Water outlet hole. Detailed Implementation

[0017] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] Example 1 like Figures 1-10 As shown, An online bottle microcrack detection device based on high-voltage discharge includes a frame 4, on which are mounted a central rotating component 10, a self-rotating drive assembly 5, a lower cam component 15, a conveyor chain 8, an inlet star wheel component 9, an outlet star wheel component 14, a screw spacing component 6, and a guide component 16. The central rotating component 10, the inlet star wheel component 9, the outlet star wheel component 14, the screw spacing component 6, and the guide component 16 are interconnected and drive each other through gears at their respective bottoms.

[0021] The central rotating component 10 is equipped with several crack detection units, each including a bottle holder assembly 3, a discharge assembly 2, a bottle neck pressing assembly 1, and a water spray rod assembly 17. The discharge assembly 2 is located on one side of the bottle holder assembly 3 and is fixedly connected to the frame. The bottle neck pressing assembly 1 and the water spray rod assembly 17 are located above the bottle holder assembly 3. The water spray rod assembly and the bottle holder are arranged coaxially, vertically. The bottle 18 is placed on the center of the bottle holder and can rotate and rise with the bottle holder. When the bottle holder assembly rotates to the high position of the lower cam assembly, the positional relationship of the discharge assembly, the water spray rod assembly, the bottle, and the bottle holder is as follows: Figure 8 As shown, the water spray bar has been inserted into the bottle, and the discharge component fits perfectly against the bottle body.

[0022] The central rotating component 10 is also equipped with an electrical cabinet 11 and a water tank 12. The electrical cabinet 11 is electrically connected to the crack detection unit, and the water tank 12 is connected to the water spray bar assembly. A central gear is also provided at the bottom of the central rotating component 10.

[0023] The bottle holder assembly 3 includes an insulating base 301, with a bearing fixedly connected above the insulating base. A bottle holder 302 is fixedly connected above the bearing, and both the bottle holder 302 and the insulating base 301 are fixedly connected to the inner ring of the bearing. A bottle holder insulating sleeve 303 is fixedly fitted above the bottle holder. A first bearing seat is fixedly connected to the outer ring of the bearing, and a spring plunger 304 is vertically mounted on the first bearing seat. An insulating connecting block 305 is also fixedly connected to the distal end of the first bearing seat, and a linear bearing 105 is fixedly connected to the other side of the insulating connecting block 305. The linear bearing is slidably fitted onto a guide shaft 306, one end of which is fixed to a central rotating component 10. The guide shaft is parallel to the central axis of the bottle holder. This device allows the bottle holder 302 to rotate while rising and falling.

[0024] The second bearing housing 309 is fixedly connected to the central rotating component 10. A spline sleeve is connected inside the second bearing housing 309 via bearings. The spline sleeve is rotatable relative to the second bearing housing. A spline shaft 308 is located inside the spline sleeve, and the spline sleeve and spline shaft 308 are in sliding engagement. A synchronous pulley 310 is also fixedly mounted on the spline sleeve. The top of the spline shaft 308 is fixedly connected to the insulating seat 301. A third bearing housing 311 is connected to the bottom of the spline shaft 308 via bearings. Guide rods are slidably connected to both sides of the third bearing housing 311, and the upper ends of the guide rods are fixedly connected to the central rotating component. A first roller 312 is also provided on the third bearing housing 311. The axis of the first roller 312 is perpendicular to the axis of the spline shaft 308.

[0025] The frame 4 is also provided with a lower cam component 15, which is located at the bottom of the central rotating component 10 and is arranged coaxially with it. The first roller 312 is in tangential contact with the lower cam and rises or falls along the cam curve under the rotation of the central rotating component, thereby driving the bottle holder to rise and fall.

[0026] The bottle holder assembly 3 is used to achieve bottle lifting and rotation, and simultaneously, when the bottle holder 302 rises to the high position of the cam, it becomes conductive with the electrodes of the discharge assembly 2. Figures 1-3As shown, when the synchronous pulley 310 enters the meshing area with the synchronous belt 504, it begins to rotate along with the spline sleeve, spline shaft 308, insulating seat 301, and bottle holder 302. The first roller 312 moves up and down on the lower cam component 15, driving the spline shaft 308, insulating seat 301, bottle holder 302, insulating connecting block 305, and linear bearing to move up and down together. The spring plunger 304 connects the bottle holder 302 and the discharge electrode 202 with high voltage to detect cracks at the bottom of the bottle. Due to the limiting effect of the guide rod, the linear bearing 105, spring plunger 304, and insulating connecting block 305 on it only move up and down with the first bearing seat and do not rotate. The bottle holder insulating sleeve 303, insulating seat 301, and insulating connecting block 305 are all made of insulating material, insulating the bottom of the bottle holder 302 from the rear of the conductive plunger 304. The bottle holder is made of metal.

[0027] The bottle-pressing assembly 1 includes a guide rod 101, which is vertically arranged. A guide sleeve 102 is slidably sleeved on the guide rod 101, and the guide sleeve 102 is connected to the central rotating component 10. A lifting plate 103 is provided on the guide rod 101, located below the guide sleeve 102. A bottle-pressing sleeve 104 is rotatably connected to the lifting plate. A roller mounting seat 106 is provided at the top of the guide rod 101. A second roller 107 is rotatably mounted on the roller mounting seat 106 via a bearing. The plane containing the axis of the second roller 107 is parallel to the plane containing the axis of the first roller 312. An upper cam component is also provided on the frame 4, which cooperates with the second roller 107.

[0028] The water spray rod assembly 17 includes a fixing head 601, which is fixed to a central rotating component. A water spray rod 602 and an inner liner tube 604 are fixedly connected to the lower end of the fixing head, with the inner liner tube positioned inside the water spray rod. The water spray rod is a tubular structure with several small holes 603 arranged in a straight line on its wall, the center line of which is perpendicular to the center line of the water spray rod. The bottom end of the water spray rod is sealed. A gap is left between the lower end of the inner liner tube and the lower end of the water spray rod. A water outlet 606 is located above the fixing head, and a water inlet 605 is located on the side of the fixing head.

[0029] The discharge assembly 2 includes an electrode holder 201 and a discharge electrode 202. The electrode holder 201 is connected to the central rotating component 10. The discharge electrode 202 is located at the bottom of the electrode holder 201, and it is aligned vertically with the conductive plunger 304. The discharge electrode 202 has a shape similar to that of the bottle, and it is plate-shaped. The discharge electrode 202 is located on the outer side of the bottle and on the central cross-section of the bottle. The side of the discharge electrode 202 closest to the bottle has densely serrated edges. The discharge electrode 202 and the spring plunger are located on the same vertical plane. The electrode holder 201 is made of insulating material, such as polytetrafluoroethylene (PTFE). The length of the electrode holder 201 is such that when the bottle is raised to its highest point with the bottle support 302, the lower end face of the discharge electrode 202 is basically flush with the bottom of the bottle.

[0030] The self-rotation drive assembly 5 includes a servo motor 501, a drive wheel 502, a transition wheel group 503, a synchronous belt 504, and a tension wheel 505. The axes of the drive wheel 502, the transition wheel group 503, and the tension wheel 505 are all perpendicular to the horizontal plane. The drive wheel 502, the transition wheel 503, and the tension wheel 505 are connected to the frame 4. The servo motor 501 is located at the bottom of the drive wheel 502, and the output end of the servo motor 501 is connected to the drive wheel 502. The synchronous belt 504 cooperates with the drive wheel 502, the transition wheel 503, and the tension wheel 505. The synchronous belt 504 cooperates with the synchronous pulley 310. The servo motor 501 drives the synchronous belt 504 to rotate, which in turn drives the synchronous pulley 310, which enters the meshing area, to rotate, thereby realizing the self-rotation of the bottle.

[0031] In use, this device conveys bottles from the production line to the equipment via a conveyor chain 8. After passing through the screw pitching assembly, the bottles enter the bottle holder lifting assembly 3 on the central rotating component 10 via the bottle inlet star wheel assembly 9. As the central rotating component rotates, the bottle holder rises to a certain height due to the action of the cam. At this time, the water spray rod in the water spray rod assembly has been inserted into the bottle through the bottle opening and begins to spray water. Simultaneously, the discharge assembly 2 is connected to high voltage. After maintaining this state for several stations, the water spraying and discharge end, and finally, the bottle holder 302 begins to descend. This invention sprays water into the bottle through the water spray rod, while an external discharge electrode on the bottle body discharges. When there is a crack in the bottle body, the inside and outside of the bottle body become conductive, and the current changes. By cooperating with the water spray rod and the discharge electrode, the presence of a crack in the bottle body can be detected.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An online bottle microcrack detection device based on high-voltage discharge, characterized in that, include: Bottle holder assembly (3), the bottle holder assembly (3) includes an insulating seat (301), a bearing is fixedly connected above the insulating seat (301), a bottle holder (302) is fixedly connected above the bearing, the bottle holder (302) and the insulating seat (301) are both fixedly connected to the inner ring of the bearing, and a bottle holder insulating sleeve (303) is fixedly sleeved above the bottle holder (302). The discharge assembly (2) includes an electrode holder (201) and a discharge electrode (202). The electrode holder (201) is made of insulating material, and the bottom of the electrode holder (201) is provided with a discharge electrode (202). The discharge electrode (202) has an appearance similar to that of a bottle. The water spray bar assembly (17) is capable of spraying water into the bottle, converting the bottle into a conductor; Bottle neck assembly (1), which is capable of being raised and lowered; It also includes a central rotating component (10), a discharge assembly (2) and a water spray rod assembly (17) which are all fixed on the central rotating component, and the bottle holder assembly (3) can be raised, lowered and rotated; The outer ring of the bearing in the bottle holder assembly (3) is fixedly connected to a first bearing seat; A spring plunger (304) is vertically provided on the first bearing housing. An insulating connecting block (305) is fixedly connected to the far end of the first bearing housing, and a linear bearing is fixedly connected to the other side of the insulating connecting block (305); The linear bearing is slidably sleeved on the guide shaft (306), one end of the guide shaft (306) is fixed on the central rotating component, and the guide shaft (306) is parallel to the central axis of the bottle holder (302); The bottle holder and spring plunger are made of conductive metal materials, and the bottle holder insulating sleeve, insulating base, and insulating connecting block are made of insulating materials. The bottle holder assembly (3) has a second bearing seat (309) in the middle, and the second bearing seat (309) is fixedly connected to the central rotating component (10); The second bearing housing (309) is connected to a spline sleeve through a bearing. The spline sleeve can rotate relative to the second bearing housing (309). The spline sleeve contains a spline shaft (308). The spline sleeve and the spline shaft (308) are in sliding fit. A synchronous pulley (310) is also fixed on the spline sleeve. The top of the spline shaft is fixedly connected to the insulating seat (301), and the bottom of the spline shaft is connected to the third bearing seat (311) through the bearing. The third bearing seat (311) is slidably connected to the two sides of the first guide rod. The upper end of the first guide rod is fixedly connected to the central rotating component (10). The third bearing seat (311) is also provided with a first roller (312). The axis of the first roller (312) is perpendicular to the axis of the spline shaft. The bottom of the central rotating component (10) is provided with a lower cam component (15) arranged coaxially. The first roller (312) is in tangential contact with the lower cam and rises or falls along the cam curve under the rotation of the central rotating component (10), thereby driving the bottle holder to rise and fall. The electrode holder (201) is fixedly connected to the central rotating component (10). The discharge electrode (202) is plate-shaped and is arranged on the outside of the bottle and on the central cross-section of the bottle. The side of the discharge electrode (202) near the bottle is cut with dense serrations. The discharge electrode (202) and the spring plunger (304) are located on the same vertical plane. The spring plunger (304) can connect the bottle holder (302) and the discharge electrode (202) with high voltage. The water spray bar assembly (17) includes a fixing head (601) which is fixed to the central rotating component (10); The lower end of the fixed head (601) is fixedly connected to a water spray bar (602) and an inner liner pipe (604). The inner liner tube (604) is arranged inside the water spray bar (602); The water spray bar (602) is a tubular structure, and several small holes (603) are opened on the bar wall. The fixing head (601) has a water inlet hole (605) on its side, and the water spray rod (602) and the fixing head (601) are made of insulating material; The bottle neck assembly (1) includes a guide rod (101), which is vertically arranged, and a guide sleeve (102) is slidably sleeved on the guide rod (101). The guide sleeve (102) is fixedly connected to the central rotating component (10), and the guide rod (101) is provided with a lifting plate (103). The lifting plate (103) is located below the guide sleeve (102), and a bottle pressing sleeve (104) is provided on one side of the lifting plate (103). The axis of the bottle pressing sleeve (104) is parallel to the axis of the guide rod (101). The top end of the guide rod (101) is provided with a roller mounting seat (106), and the roller mounting seat (106) is rotatably mounted with a second roller (107) through a bearing. The axis of the second roller (107) is parallel to the axis of the bottle press sleeve (104).

2. The online bottle microcrack detection device based on high-voltage discharge according to claim 1, characterized in that, The small holes (603) are arranged in a straight line, and the center line of the small holes (603) is perpendicular to the center line of the water spray bar (602).

3. The online bottle microcrack detection device based on high-voltage discharge according to claim 1, characterized in that, The bottom end of the water spray bar (602) is sealed, the lower end of the inner liner tube (604) is separated from the lower end of the water spray bar (602), and a water outlet hole (606) is opened above the fixing head (601).

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