Automatic annular thickness gauge for film blowing machine and use method of automatic annular thickness gauge

Abstract

The invention relates to the technical field of film blowing equipment, in particular to an automatic annular thickness gauge for a film blowing machine and a using method thereof.The automatic annular thickness gauge comprises an annular track fixed to the film blowing machine and close to a film channel, and a thickness detection mechanism is arranged on the annular track and comprises a rotating circular ring installed on the annular track; a rack is arranged on the outer side wall of the rotating circular ring, a first gear is meshed with the position, close to the rack, of the outer side of the annular rail, a second gear is meshed with the outer side of the first gear, and a reciprocating rotating gear is arranged at the lower end of the second gear. According to the film blowing machine, the thickness detection mechanism is arranged, the thickness of the film bubbles is subjected to circulating scanning detection, the thickness of the extruded film is monitored in real time, the thickness of the film is conveniently controlled in real time, the overall qualification rate of the film extruded by the film blowing machine is increased, and the possibility that the overall qualification rate of the film is reduced due to the small thickness detection range and fixed point location is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of film blowing equipment, and specifically to an automatic annular thickness gauge for a film blowing machine and a method for using the same. Background Art

[0002] A film blowing machine thickness gauge is a device used to measure film thickness during the film blowing process. Film blowing machines are typically used to produce plastic film, and thickness gauges are used to monitor the film's thickness distribution in real time to ensure product quality during the production process.

[0003] Laser thickness measurement scans the surface of a film with a laser beam and measures the intensity change of the reflected laser beam to estimate the film thickness. This method can measure film thickness in real time and non-contact, making it suitable for high-precision measurements.

[0004] The X-ray transmission method uses the attenuation of X-rays when they pass through a thin film to calculate its thickness. The thicker the film, the lower its X-ray transmittance. This method is applicable to a variety of materials, especially non-metallic films.

[0005] Ultrasonic thickness measurement uses the change in the propagation velocity of ultrasound when it passes through a film to measure thickness. The advantage of this method is that it can be used on different film materials and is suitable for thicker films.

[0006] Regarding the above-mentioned related technologies, during the production process of the film blowing machine, an annular cylindrical film bubble is extruded, and the thickness gauge probe needs to always be perpendicular to the surface of the film. Due to the large outer diameter of the film bubble, during the film blowing process, the thickness gauge at a fixed point is difficult to detect the thickness of the film bubble at other positions, and thus it is difficult to control the thickness of the entire film bubble, which can easily lead to a decline in film quality control and affect the normal use of the film. Summary of the Invention

[0007] In response to the above-mentioned shortcomings of the prior art, the present application provides an automated annular thickness gauge for a film blowing machine, comprising an annular track fixed on the film blowing machine and close to the film channel, wherein a thickness detection mechanism is provided on the annular track, and the thickness detection mechanism comprises a rotating ring installed on the annular track, a rack is provided on the outer wall of the rotating ring, a first gear is meshed with the outer side of the annular track and close to the rack, a second gear is meshed with the outer side of the first gear, a reciprocating rotating gear is provided at the lower end of the second gear, an inner ring half gear is meshed with the outer side of the reciprocating rotating gear, an outer half gear is also provided on the outer side of the reciprocating rotating gear, an outer guard plate is provided on the outer side of the annular track and close to the outer half gear, a plurality of mounting components are provided on the rotating ring, and the plurality of mounting components are evenly distributed along the circumference of the rotating ring, and a real-time thickness gauge is provided on the mounting component.

[0008] Furthermore, the distance between two adjacent real-time thickness gauges is smaller than the length of the rack, the scanning ranges of the two adjacent real-time thickness gauges overlap at the edge, and the scanning ranges of the multiple real-time thickness gauges form a complete disk.

[0009] Furthermore, the mounting assembly includes a clamping portion installed on the rotating ring, the clamping portion is provided with a clamping plate with a clamping knob, a ring is provided on the clamping portion and close to the clamping plate, a first displacement plate is provided on the inner side of the clamping plate, one end of the first displacement plate is inserted into the inner side of the clamping plate, the other end of the first displacement plate is inserted into the inner side of the ring, a second displacement plate is inserted into the end of the first displacement plate close to the ring, a clamping knob is also provided on the upper end of the first displacement plate and close to the second displacement plate, and one end of the second displacement plate is connected to the real-time thickness gauge.

[0010] Furthermore, a U-shaped socket is provided at one end of the second displacement plate connected to the real-time thickness gauge, the real-time thickness gauge is snapped into the socket, and a probe is provided at one end of the real-time thickness gauge away from the socket.

[0011] Furthermore, an electrostatic adsorption plate is provided on the outer wall of the real-time thickness gauge and close to the probe. The electrostatic adsorption plate is configured to be U-shaped, and the probe is embedded in the groove at the center of the electrostatic adsorption plate.

[0012] Furthermore, the clamping portion includes a center plug-in block, and an annular groove is provided on the upper end surface of the rotating ring near the center. The lower end of the center plug-in block is inserted into the rectangular groove opened at the upper end of the rotating ring. An external clamping block is provided on one side of the center plug-in block, and an internal clamping block is provided on the other end of the center plug-in block. The inner clamping block and the outer clamping block are clamped on the rotating ring.

[0013] Furthermore, a slot passing through the center plug-in block is provided on the center plug-in block, a first fastener is provided at one end of the outer snap-in block close to the center plug-in block, and a second fastener is provided at one end of the inner snap-in block close to the center plug-in block. The first fastener is inserted into the slot from one side of the center plug-in block, and the second fastener is inserted into the first fastener from the other side of the center plug-in block, and the first fastener and the second fastener are snap-connected.

[0014] A method for using the above-mentioned automatic annular thickness gauge for a film blowing machine is characterized by comprising the following steps: S1. Installation: Insert the center plug into the groove on the upper end face of the rotating ring. Attach the outer and inner snap-fit blocks to the center plug. Secure the center plug with the first and second fasteners. Then, secure the second displacement plate to the rotating ring. Attach the real-time thickness gauge to the socket on the second displacement plate, with the probe facing the center axis of the rotating ring. S2. Debugging: Adjust the position of the first displacement plate at the clamping plate based on the radius of the film bubble being blown by the film blowing machine. This significantly adjusts the position of the second displacement plate. Furthermore, adjust the length of the second displacement plate extending outward from the first displacement plate. This in turn slightly adjusts the position of the socket, thereby controlling the position of the real-time thickness gauge to ensure the probe can successfully measure the thickness of the film bubble. S3. During film blowing, the motor's output shaft drives the inner and outer half gears, which in turn rotate the reciprocating gear. This in turn drives the first gear, which is then driven by a second gear fixedly connected to the reciprocating gear. The rack meshing with the first gear moves back and forth as the first gear rotates, controlling the reciprocating rotation of the rotating ring. This causes the real-time thickness gauge's probe to cyclically scan the film bubble. S4. Data analysis: Under the action of the rotating ring, multiple probes cyclically scan the film bubble. Each probe scans the thickness status of the film bubble within a sector-shaped range. The sectors scanned by multiple probes form a complete ring, thereby presenting the overall thickness detection status of the film bubble on the monitoring.

[0015] Compared with the known prior art, the technical solution provided by this application has the following beneficial effects: 1. This application provides a thickness detection mechanism, which controls the reciprocating gear to perform reciprocating motion through the inner ring half gear and the outer ring half gear, thereby controlling the reciprocating rotation of the rotating ring. This allows the probe of the real-time thickness gauge to always be perpendicular to the outer wall of the film bubble, and performs cyclic scanning and detection of the thickness of the film bubble, thereby monitoring the thickness of the extruded film in real time. This facilitates real-time control of the film thickness, improves the overall pass rate of the film extruded by the film blowing machine, and reduces the possibility of a decrease in the overall pass rate of the film due to a small thickness detection range and fixed points. 2. This application provides an installation assembly, fixes the first displacement plate through the clamping knob on the clamping plate, adjusts the position of the first displacement plate, fixes the second displacement plate through the clamping knob on the first displacement plate, adjusts the position of the second displacement plate, and adjusts the distance between the probe and the outer wall of the film bubble in combination with the first and second displacement plates, thereby ensuring the use effect of the real-time thickness gauge, thereby improving the thickness detection effect of the thickness detection mechanism and improving the applicability of the thickness detection mechanism; 3. This application sets a clamping portion, and fixes the outer clamping block and the inner clamping block on the rotating ring through the central plug-in block, and uses the first fastener and the second fastener to clamp the outer clamping block and the inner clamping block to connect, so as to facilitate the real-time thickness gauge on the rotating ring, and facilitate the adjustment of the number and position of the real-time thickness gauge, thereby improving the applicability of the thickness detection mechanism, and at the same time facilitating the adjustment of the number of detection groups of the thickness gauge, thereby improving the accuracy of the thickness gauge. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the embodiment of the present application; Figure 2 This is a schematic structural diagram of the thickness detection mechanism in an embodiment of the present application; Figure 3 This is a schematic structural diagram of a rotating ring in an embodiment of the present application; Figure 4 This is a schematic diagram of the connection of the outer ring half gear in the embodiment of the present application; Figure 5 This is a structural diagram of the clamping portion in an embodiment of the present application; Figure 6 This is a structural diagram of the central plug in the embodiment of the present application; Figure 7 This is a schematic diagram of the structure of the socket in the embodiment of the present application; Figure 8 This is a schematic structural diagram of the electrostatic adsorption plate in an embodiment of the present application; Figure 9 for Figure 7 Enlarged view of point A in the middle; Figure 10 This is a schematic diagram of the connection between the central plug and the rotating ring in an embodiment of the present application.

[0017] In the figure: 1. Annular track; 2. Thickness detection mechanism; 21. Rotating ring; 22. Rack; 23. First gear; 24. Second gear; 25. Reciprocating gear; 26. Inner ring half gear; 27. Outer ring half gear; 28. Outer guard plate; 3. Mounting assembly; 31. Clamping part; 311. Outer clamping block; 312. Inner clamping block; 313. Center plug-in block; 314. First fastener; 315. Second fastener; 316. Slot; 32. Clamp; 33. Ring; 34. First displacement plate; 35. Second displacement plate; 36. Socket; 4. Real-time thickness gauge; 41. Probe; 42. Electrostatic adsorption plate. DETAILED DESCRIPTION

[0018] In order to better understand the above technical solution, Figure 1-10 And specific implementation methods are used to describe the above technical solutions in detail.

[0019] refer to Figures 1 to 6 The present application discloses an automatic annular thickness gauge for a film blowing machine, comprising an annular track 1 and a thickness detection mechanism 2. The thickness detection mechanism 2 is mounted on the annular track 1 and is used to detect the thickness of film bubbles in the film blowing machine.

[0020] The thickness detection mechanism 2 includes a rotating ring 21, a rack 22, a first gear 23, a second gear 24, a reciprocating rotating gear 25, an inner ring half gear 26, an outer ring half gear 27, an outer guard plate 28, a mounting assembly 3, a real-time thickness gauge 4, a probe 41 and an electrostatic adsorption plate 42. The rotating ring 21 is mounted on the annular track 1, and the rotating ring 21 is slidably connected to the annular track 1. The rotating ring 21 can slide on the annular track 1, and the vibration amplitude of the rotating ring 21 is small during the sliding process. The rack 22 is fixedly mounted on the outer wall of the rotating ring 21 and is close to the edge. The outer guard plate 28 is fixedly mounted on the outer wall of the annular track 1 and is close to the rack 22. The first gear 23 is fixedly mounted on the inside of the outer guard plate 28 and is close to the rack 22. The first gear 23 is meshed with the rack 22. The second gear 24 is fixedly mounted on the inside of the outer guard plate 28 and is close to the first gear 23. The second gear 24 is meshed with the first gear 23. A connecting rod is provided at the lower end of the second gear 24. The reciprocating gear 25 is fixedly mounted below the second gear 24, and the second gear 24 and the reciprocating gear 25 are fixedly connected by the connecting rod. The second gear 24 rotates synchronously with the reciprocating gear 25, and the radius of the reciprocating gear 25 is smaller than that of the second gear 24. The inner ring half gear 26 is fixedly mounted inside the outer guard 28, near the reciprocating gear 25, and meshes with the reciprocating gear 25. The outer ring half gear 27 is fixedly mounted inside the outer guard 28, near the reciprocating gear 25, and meshes with the outer ring half gear 27. The inner ring half gear 26 and the outer ring half gear 27 are concentric and coaxial. The inner ring half gear 26 is driven by a drive motor. The mounting assembly 3 is mounted on the upper end of the rotating ring 21, and multiple mounting assemblies 3 are evenly distributed along the circumference of the rotating ring 21. The real-time thickness gauge 4 is mounted on the mounting assembly 3, which in turn is mounted on the rotating ring 21. A probe 41 is fixedly mounted on the real-time thickness gauge 4, and an electrostatic adsorption plate 42 is fixedly mounted on the outer wall of the real-time thickness gauge 4, near the probe 41. The electrostatic adsorption plate 42 is configured as a U-shaped structure, and the probe 41 fits into a groove at the center of the electrostatic adsorption plate 42.

[0021] The film blowing machine blows the film. Once the expanded film bubble stabilizes, the drive motor of the thickness detection mechanism 2 is activated. The output shaft of the drive motor rotates, driving the inner ring half gear 26 and the outer ring half gear 27. When the inner ring half gear 26 rotates to engage with the reciprocating gear 25, the reciprocating gear 25 rotates in one direction, thereby driving the second gear 24 to rotate. The first gear 23 meshed with the second gear 24 rotates, which in turn drives the rack 22 meshed with the first gear 23 to move. The displacement of the rack 22 drives the rotating ring 21 to rotate. The mounting assembly 3 located on the rotating ring 21 rotates along the circumference of the rotating ring 21 with the rotating ring 21, while the probe 41 located on the real-time thickness gauge 4 scans and detects the film bubble. The detection range of a single probe 41 is a sector, and the detection range of multiple probes 41 is a complete disk. When the inner ring half gear 26 is disengaged from the meshing connection with the reciprocating gear 25, the outer ring half gear 27 is meshed with the reciprocating gear 25, and the reciprocating gear 25 rotates in the opposite direction, thereby driving the second gear 24 and the first gear 23 to rotate in the opposite direction, and the rotation of the first gear 23 is used to drive the rack 22 to move in the opposite direction. When the rack 22 moves in the opposite direction, the rotating ring 21 rotates, thereby driving the probe 41 to return to its position. As a result, the rotating ring 21 can rotate back and forth on the annular track 1, thereby prompting the probe 41 of the real-time thickness gauge 4 to cyclically scan the film bubble. During the continuous extrusion of the film bubble, multiple probes 41 can scan the complete film bubble and then detect the thickness data of the entire film bubble. Particles such as dust generated during the extrusion of the film bubble are adsorbed by the electrostatic adsorption plate 42 next to the probe 41, reducing the amount of dust on the probe 41 and ensuring the accuracy of the data detected by the probe 41.

[0022] refer to Figures 5 to 10The mounting assembly 3 includes a clamping portion 31, a clamping plate 32, a collar 33, a first displacement plate 34, a second displacement plate 35 and a socket 36. The clamping portion 31 is mounted on the rotating ring 21. The clamping portion 31 includes an outer clamping block 311, an inner clamping block 312, a center plug-in block 313, a first fastener 314 and a second fastener 315. An annular groove is provided on the upper end surface of the rotating ring 21, and the center plug-in block 313 is inserted into the groove on the upper end surface of the rotating ring 21. A slot 316 is provided in the center of the center plug-in block 313, which passes through the center plug-in block 313. The outer clamping block 311 is mounted on one side of the center plug-in block 313, and the first fastener 314 is fixedly mounted on the outer side wall of the outer clamping block 311 and close to one end of the center plug-in block 313. The first fastener 314 is inserted into the slot 316 of the center plug-in block 313 from one side of the center plug-in block 313. The outer snap-in block 311 is snap-connected to the center plug-in block 313 via the first fastener 314. The inner snap-in block 312 is mounted on the other side of the center plug-in block 313. The second fastener 315 is fixedly mounted on the outer side wall of the inner snap-in block 312 and close to one end of the center plug-in block 313. The second fastener 315 is inserted into the slot 316 of the center plug-in block 313 from the other end of the center plug-in block 313, and the second fastener 315 is inserted into the inner side of the first fastener 314 and snap-connected to the first fastener 314. The inner snap-in block 312 is snap-connected to the center plug-in block 313 via the second fastener 315, and the inner snap-in block 312 is connected to the outer snap-in block 311 via the first fastener 314 and the second fastener 315. The clamping plate 32 is fixedly mounted on the upper end face of the outer clamping block 311, near the center. A clamping knob is provided on the upper end face of the clamping plate 32. The clamping knob and the clamping plate 32 are connected by a threaded rod. The upper end of the clamping plate 32 is provided with a threaded hole for the threaded rod to pass through. The collar 33 is fixedly mounted on the upper end of the inner clamping block 312. One end of the first displacement plate 34 is inserted into the inner side of the clamping plate 32, and the end of the first displacement plate 34 inserted into the clamping plate 32 passes through the clamping plate 32. The first displacement plate 34 can slide freely inside the clamping plate 32, and the clamping knob on the clamping plate 32 can fix the first displacement plate 34. The other end of the first displacement plate 34 is inserted into the inner side of the collar 33, and the end of the first displacement plate 34 inserted into the collar 33 passes through the collar 33. The first displacement plate 34 can slide freely within the collar 33, and the collar 33 is used to improve the stability of the first displacement plate 34. The second displacement plate 35 is inserted into the end of the first displacement plate 34 near the collar 33, and is slidably connected to the first displacement plate 34. A threaded hole is defined on the upper end surface of the first displacement plate 34, near the second displacement plate 35. A clamping knob is also threaded into the hole, allowing the first displacement plate 34 to be secured to the second displacement plate 35 using the threaded rod of the clamping knob. A socket 36 is fixedly mounted on the end of the second displacement plate 35 away from the first displacement plate 34 and is used to secure the real-time thickness gauge 4.

[0023] Before film blowing is performed on the film blowing machine, the center plug 313 is first inserted into the groove on the upper end surface of the rotating ring 21. Then, the end of the outer clamping block 311 with the first fastener 314 is inserted into the slot 316 at the center of the center plug 313. The first fastener 314 is inserted into the slot 316 of the center plug 313. The end of the inner clamping block 312 with the second fastener 315 is inserted into the slot 316 of the center plug 313. The second fastener 315 is inserted into the slot 316 of the center plug 313 and the second fastener 315 is inserted into the first fastener 314. The first fastener 314 and the second fastener 315 are engaged. Through the engagement of the first fastener 314 and the second fastener 315, the outer clamping block 311 and the inner clamping block 312 are fixed to the two sides of the center plug 313, thereby fixing the clamping portion 31 to the rotating ring 21. Multiple clamping parts 31 are fixedly installed on the rotating ring 21 at equal intervals, and the multiple clamping parts 31 are evenly distributed along the circumference of the rotating ring 21, ensuring that the probes 41 of the multiple real-time thickness gauges 4 can form a complete, disc-shaped detection range. After the clamping parts 31 are installed, the position of the first displacement plate 34 on the clamping plate 32 is adjusted by adjusting the clamping knob at the upper end of the external clamping block 311, thereby significantly controlling the extension of the first displacement plate 34. By adjusting the clamping knob at the upper end of the first displacement plate 34, the position of the second clamping plate 32 within the first displacement plate 34 is slightly adjusted to control the extension of the second displacement plate 35. By adjusting the positions of the first displacement plate 34 and the second displacement plate 35, the position of the socket 36 and the real-time thickness gauge 4 is adjusted to adjust the distance between the probe 41 on the real-time thickness gauge 4 and the outer wall of the film bubble, thereby ensuring the accuracy of the detection data of the probe 41 of the real-time thickness gauge 4.

[0024] A method for using the above-mentioned automatic annular thickness gauge for a film blowing machine comprises the following steps: S1. Installation: Insert the center plug 313 into the groove on the upper end surface of the rotating ring 21, insert the outer snap-in block 311 and the inner snap-in block 312 into the center plug 313, and secure the center plug 313 with the first fastener 314 and the second fastener 315. Then, secure the second displacement plate 35 to the rotating ring 21, and then secure the real-time thickness gauge 4 to the socket 36 on the second displacement plate 35, with the probe 41 facing the central axis of the rotating ring 21. S2. Debugging: Adjust the position of the first displacement plate 34 at the clamping plate 32 according to the radius of the film bubble being blown by the film blowing machine. This significantly adjusts the position of the second displacement plate 35. The length of the second displacement plate 35 extending outward from the first displacement plate 34 is then adjusted. This in turn slightly adjusts the position of the socket 36, thereby controlling the position of the real-time thickness gauge 4 so that the probe 41 can successfully measure the thickness of the film bubble. S3. During film blowing, the motor's output shaft drives the inner and outer half gears 26 and 27, which in turn rotate the reciprocating gear 25. The reciprocating gear 25 then rotates, which in turn drives the first gear 23 using the second gear 24 fixedly connected to the reciprocating gear 25. The rack 22 meshing with the first gear 23 moves back and forth as the first gear 23 rotates, thereby controlling the reciprocating rotation of the rotating ring 21. This causes the probe 41 of the real-time thickness gauge 4 to cyclically scan the film bubble. S4. Data analysis: Under the action of the rotating ring 21, multiple probes 41 cyclically scan the film bubble. Each probe 41 scans the thickness status of the film bubble within a sector-shaped range. The sectors scanned by multiple probes 41 form a complete ring, thereby presenting the overall thickness detection status of the film bubble on the monitoring.

[0025] The working principle of the embodiment of this application: Before the bubble is extruded, the central plug block 313 is inserted into the groove opened at the upper end of the rotating ring 21, and then the outer clamping block 311 and the inner clamping block 312 are inserted into the two sides of the central plug block 313, the clamping plate 32 and the collar 33 are fixed, and then the clamping portion 31 is fixedly installed on the rotating ring 21, so that the multiple clamping portions 31 are evenly distributed along the circumference of the rotating ring 21, and the position of the first displacement plate 34 and the second displacement plate 35 is adjusted according to the inner diameter of the bubble, and then the distance between the probe 41 and the outer wall of the bubble is adjusted, and the probe 41 of the real-time thickness gauge 4 is placed at a position where the thickness of the bubble can be accurately detected; During the bubble extrusion process, the inner ring half gear 26 and the outer ring half gear 27 are driven to rotate by the driving gear on the inner ring half gear 26, thereby driving the reciprocating rotating gear 25 to rotate. When the inner ring half gear 26 is engaged with the reciprocating rotating gear 25, the reciprocating rotating gear 25 rotates in one direction, and when the outer ring half gear 27 is engaged with the reciprocating rotating gear 25, the reciprocating rotating gear 25 rotates in the other direction. In this way, the forward and reverse rotation of the second gear 24 and the first gear 23 is controlled, thereby driving the rack 22 to move back and forth, realizing the reciprocating rotation of the rotating ring 21. When the rotating ring 21 rotates back and forth, the real-time thickness gauge 4 probe 41 located at its upper end performs cyclic scanning and detection on the extruded bubble.

[0026] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An automatic annular thickness gauge for a film blowing machine, characterized in that: The invention comprises an annular track (1) fixed on a film blowing machine and close to a film path, wherein the annular track (1) is provided with a thickness detection mechanism (2), wherein the thickness detection mechanism (2) comprises a rotating ring (21) mounted on the annular track (1), wherein a rack (22) is provided on the outer wall of the rotating ring (21), wherein a first gear (23) is meshed with a position on the outer side of the annular track (1) and close to the rack (22), wherein a second gear (24) is meshed with the outer side of the first gear (23), and wherein the second gear (24) is meshed with a second gear (24). A reciprocating gear (25) is provided at the lower end thereof, an inner ring half gear (26) is meshed with the outer side of the reciprocating gear (25), an outer half gear is further provided on the outer side of the reciprocating gear (25), an outer guard plate (28) is provided on the outer side of the annular track (1) and close to the outer half gear, a plurality of mounting assemblies (3) are provided on the rotating ring (21), the plurality of mounting assemblies (3) are evenly distributed along the circumference of the rotating ring (21), and a real-time thickness gauge (4) is provided on the mounting assembly (3).

2. The automatic annular thickness gauge for a film blowing machine according to claim 1, characterized in that: The distance between two adjacent real-time thickness gauges (4) is less than the length of the rack (22), the scanning ranges of the two adjacent real-time thickness gauges (4) overlap at the edge, and the scanning ranges of multiple real-time thickness gauges (4) form a complete disk.

3. The automatic annular thickness gauge for a film blowing machine according to claim 2, characterized in that: The mounting assembly (3) comprises a clamping portion (31) mounted on a rotating ring (21), a clamping plate (32) with a self-contained clamping knob being provided on the clamping portion (31), a collar (33) being provided on the clamping portion (31) and close to the clamping plate (32), a first displacement plate (34) being provided on the inner side of the clamping plate (32), one end of the first displacement plate (34) being plugged into the inner side of the clamping plate (32), the other end of the first displacement plate (34) being plugged into the inner side of the collar (33), a second displacement plate (35) being plugged into the end of the first displacement plate (34) close to the collar (33), a clamping knob being also provided on the upper end of the first displacement plate (34) and close to the second displacement plate (35), and one end of the second displacement plate (35) being connected to the real-time thickness gauge (4).

4. The automatic annular thickness gauge for a film blowing machine according to claim 3, characterized in that: A U-shaped socket (36) is provided at one end of the second displacement plate (35) connected to the real-time thickness gauge (4), the real-time thickness gauge (4) is snap-fitted into the socket (36), and a probe (41) is provided at one end of the real-time thickness gauge (4) away from the socket (36).

5. The automatic annular thickness gauge for a film blowing machine according to claim 4, characterized in that: An electrostatic adsorption plate (42) is provided on the outer wall of the real-time thickness gauge (4) and close to the probe (41). The electrostatic adsorption plate (42) is configured to be U-shaped, and the probe (41) is embedded in a groove at the center of the electrostatic adsorption plate (42).

6. The automatic annular thickness gauge for a film blowing machine according to claim 5, characterized in that: The clamping portion (31) includes a central plug-in block (313). An annular groove is provided on the upper end surface of the rotating ring (21) near the center. The lower end of the central plug-in block (313) is inserted into the rectangular groove provided on the upper end of the rotating ring (21). An outer clamping block (311) is provided on one side of the central plug-in block (313). An inner clamping block (312) is provided on the other end of the central plug-in block (313). The inner clamping block (312) and the outer clamping block (311) are clamped on the rotating ring (21).

7. The automatic annular thickness gauge for a film blowing machine according to claim 6, characterized in that: The central plug-in block (313) is provided with a slot (316) that passes through the central plug-in block (313); a first fastener (314) is provided at one end of the external plug-in block close to the central plug-in block (313); a second fastener (315) is provided at one end of the internal clamping block (312) close to the central plug-in block (313); the first fastener (314) is plugged into the slot (316) from one side of the central plug-in block (313); the second fastener (315) is plugged into the first fastener (314) from the other side of the central plug-in block (313); and the first fastener (314) and the second fastener (315) are engaged and connected.

8. A method for using an automated annular thickness gauge for a film blowing machine according to claim 7, characterized in that: The following steps are included: S1. Installation: Insert the center plug (313) into the groove on the upper end surface of the rotating ring (21), insert the outer clamping block (311) and the inner clamping block (312) into the center plug (313), use the first fastener (314) and the second fastener (315) to fix the center plug (313), and then fix the second displacement plate (35) on the rotating ring (21). Then, fix the real-time thickness gauge (4) into the socket (36) on the second displacement plate (35) so that the probe (41) faces the central axis of the rotating ring (21); S2. Debugging: According to the radius of the bubble of the film blown by the film blowing machine, adjust the position of the first displacement plate (34) at the clamping plate (32), and then significantly adjust the position of the second displacement plate (35), and then adjust the length of the second displacement plate (35) extending outward from the first displacement plate (34), and then slightly adjust the position of the socket (36), and then control the position of the real-time thickness gauge (4), so that the probe (41) can smoothly detect the thickness of the bubble; S3. Detection: During the film blowing process of the film blowing machine, the output shaft of the motor drives the inner ring half gear (26) and the outer ring half gear (27) to rotate, thereby causing the reciprocating gear (25) to reciprocate, and then the second gear (24) fixedly connected to the reciprocating gear (25) drives the first gear (23) to rotate, and the rack (22) meshing with the first gear (23) moves back and forth following the rotation of the first gear (23), thereby controlling the reciprocating rotation of the rotating ring (21), so that the probe (41) of the real-time thickness gauge (4) cyclically scans the film bubble; S4. Data analysis: Under the action of the rotating ring (21), multiple probes (41) cyclically scan the film bubble. Each probe (41) scans the thickness status of the film bubble within a sector-shaped range. The sectors scanned by multiple probes (41) form a complete ring, thereby presenting the overall thickness detection status of the film bubble on the monitoring.

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