Thickness measuring device for high-temperature-resistant composite food packaging film production line

Abstract

The invention provides a thickness measuring device for a high-temperature-resistant composite food packaging film production line, and relates to the technical field of packaging film laser thickness measurement. Comprising a measurement installation part, and a conveying flattening part is installed on the measurement installation part. The conveying and flattening piece is used for flattening a food packaging film; two measurement abutting pieces are installed on the measurement installation piece. The two measurement abutting members are provided with laser measurement members. A reference verification piece is mounted on the measurement mounting piece; two film edge detection pieces are mounted on the measurement mounting piece; by adopting the measurement mounting piece and utilizing the edge folding rods which are arranged in a staggered manner, edge folding guiding can be conveniently performed after the packaging film is input, the packaging film is promoted to be folded, and subsequent simultaneous thickness measurement of multiple layers is facilitated; the problems that an existing thickness measuring device for a high-temperature-resistant composite food packaging film production line is not convenient for online continuous multi-layer thickness measurement and is not convenient for real-time monitoring of a packaging film conveying state are solved.

Description

Technical Field

[0001] This invention relates to the field of laser thickness measurement technology for packaging films, and in particular to a thickness measuring device for a high-temperature resistant composite food packaging film production line. Background Technology

[0002] In the manufacturing process of high-temperature resistant composite food packaging film, after the extruded film undergoes a multi-layer lamination process, thickness measurement is required. Measuring the thickness helps analyze the manufacturing precision of the film, preventing the use of defective products with significant thickness deviations. Furthermore, multiple layers of the film are typically stacked before measurement to more accurately reflect the manufacturing precision. Current thickness measuring devices used in high-temperature resistant composite food packaging film production lines struggle to achieve continuous online measurement of multiple layers. These devices often require rapid measurement operations; otherwise, the film being transported will be directly wound up, making inspection impossible. Simultaneously, single-layer measurements are prone to errors due to small deviations, increasing overall measurement error. Real-time monitoring of the film's transport status is also inconvenient; any displacement or deviation in the film will affect measurement accuracy. Summary of the Invention

[0003] This disclosure relates to a thickness measuring device for a high-temperature resistant composite food packaging film production line, which solves the problems that current thickness measuring devices for high-temperature resistant composite food packaging film production lines are not convenient for continuous online measurement of multiple layers of thickness, nor are they convenient for real-time monitoring of the packaging film conveying status.

[0004] In a first aspect, this disclosure provides a thickness measuring device for a high-temperature resistant composite food packaging film production line, specifically including a measuring mounting component. A conveying and flattening component is mounted on the measuring mounting component; the conveying and flattening component is used to flatten the food packaging film; two measuring abutments are mounted on the measuring mounting component; laser measuring components are mounted on the two measuring abutments; a reference calibration component is mounted on the measuring mounting component; and two film edge detection components are mounted on the measuring mounting component. The measuring mounting component includes a measuring mounting frame and measuring mounting plates, with four measuring mounting plates fixedly mounted on the measuring mounting frame; and four through slots are provided at the bottom of the measuring mounting frame.

[0005] In at least some embodiments, the measuring mounting component further includes: folding rods, with three folding rods fixedly mounted on the bottom of the two upper measuring mounting plates respectively; and two folding rods fixedly mounted on the top of the two lower measuring mounting plates respectively; the folding rods are L-shaped.

[0006] In at least some embodiments, the conveying and flattening component includes: a conveying motor, a conveying roller, a flattening motor, a flattening roller, and flattening spirals. The conveying motor is fixedly mounted on a measuring mounting frame; the output shaft of the conveying motor passes through the measuring mounting frame; a conveying roller is fixedly mounted on the output shaft of the conveying motor, and the conveying roller is rotatably mounted on the measuring mounting frame; the flattening motor is fixedly mounted on the measuring mounting frame, and the output shaft of the flattening motor passes through the measuring mounting frame; a flattening roller is fixedly mounted on the output shaft of the flattening motor, and the flattening roller is rotatably mounted on the measuring mounting frame; two flattening spirals are fixedly mounted on the flattening roller, and the two flattening spirals are arranged opposite to each other; a gap is provided between the conveying roller and the flattening roller.

[0007] In at least some embodiments, the measuring abutment includes: a telescopic mounting cylinder, a stop block, a telescopic inner cylinder, a telescopic slide bar, and an abutment electric push rod. The telescopic mounting cylinder is fixedly mounted on the measuring mounting frame. The telescopic inner cylinder is slidably sleeved inside the telescopic mounting cylinder. A telescopic slide bar is fixedly mounted at the bottom of the telescopic inner cylinder and is slidably mounted inside the telescopic mounting cylinder. An abutment electric push rod is fixedly sleeved inside the telescopic inner cylinder, and the output shaft of the abutment electric push rod is fixedly mounted inside the telescopic mounting cylinder. A stop block is fixedly sleeved on the telescopic mounting cylinder.

[0008] In at least some embodiments, the measuring abutment further includes: an abutment spring, a ball sleeve, and a guide strip, wherein the abutment spring is located inside the telescopic inner cylinder; the ball sleeve is slidably inserted into the telescopic inner cylinder; a guide strip is fixedly installed on the top of the telescopic inner cylinder and is slidably installed on the inner side of the telescopic inner cylinder; one end of the abutment spring is fixedly connected to the inner side of the ball sleeve, and the other end of the abutment spring is fixedly connected to the inner side of the telescopic inner cylinder; and a ball is embedded at the end of the ball sleeve.

[0009] In at least some embodiments, the laser measuring component includes: a laser measuring plate and a laser rangefinder, wherein two laser measuring plates are provided, and the two laser measuring plates are respectively fixedly mounted on two ball bearing sleeves; a laser rangefinder is fixedly mounted on the front laser measuring plate.

[0010] In at least some embodiments, the reference calibration component includes: a calibration plate and a rocker arm, the calibration plate being rotatably mounted on a telescopic mounting cylinder; the end of the calibration plate having an inclined structure; the rocker arm being fixedly mounted on the calibration plate; and the calibration plate being used to flip the stop ball sleeve.

[0011] In at least some embodiments, the membrane edge detection element includes: a power connection post, a rotating shaft, a battery, and an indicator light; the power connection post is fixedly mounted on the measuring mounting plate, and the rotating shaft is rotatably mounted on the bottom of the power connection post; the battery is fixedly mounted on the measuring mounting plate; and the indicator light is fixedly mounted on the measuring mounting plate.

[0012] In at least some embodiments, the membrane edge detection element further includes: a swing rod, on which the swing rod is fixedly mounted; and a torsion spring is connected between the end of the rotating shaft and the electrical terminal.

[0013] In at least some embodiments, the membrane edge detection element further includes: a drag-reducing ball, wherein the drag-reducing ball is embedded in the side of the swing rod and the drag-reducing ball is aligned with the folded edge rod on the same side; the swing rod, the battery, the indicator light and the folded edge rod on the same side are connected in series.

[0014] This invention provides a thickness measuring device for a high-temperature resistant composite food packaging film production line, which has the following advantages: This invention employs a measuring mounting component with staggered folding rods to guide the folding of the packaging film after it is input, facilitating simultaneous multi-layer thickness measurement. This ensures that measurement deviations are fully reflected, avoiding the problem of insufficient accuracy of laser rangefinders when measuring single layers. Furthermore, this structure enables continuous measurement of multiple layers of packaging film. Two measuring abutments allow for rolling clamping without affecting continuous film transport, resulting in a more rational structure. This allows for continuous online measurement, improving production line efficiency. The flattening spiral facilitates the re-flattening and output of the folded packaging film.

[0015] In addition, the use of film edge detection components can detect the conveying status of the packaging film between the folding rods, which can facilitate the detection of the offset of the packaging film and avoid the packaging film edge from detaching from the end of the ball sleeve due to excessive conveying offset, resulting in less contact and adhesion of the packaging film and causing deviation in the detection data. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0017] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0018] In the attached diagram: Figure 1 This paper shows a schematic diagram of the overall structure of a thickness measuring device for a high-temperature resistant composite food packaging film production line according to this application; Figure 2 This invention illustrates a schematic diagram of a thickness measuring device for a high-temperature resistant composite food packaging film production line passing through the packaging film. Figure 3 A cross-sectional view of the measuring mounting structure of this application is shown; Figure 4 A schematic diagram of the conveyor flattening component structure of this application is shown; Figure 5 A schematic diagram of the measuring abutment structure of this application is shown; Figure 6 A cross-sectional view of the measuring abutment structure of this application is shown; Figure 7 A schematic diagram of the guide strip installation position of this application is shown; Figure 8 This application shows Figure 2 Enlarged view of the structure of the G region; Figure 9 A schematic diagram of the membrane edge detection component structure of this application is shown; Figure 10 This application shows Figure 6 Enlarged view of the structure of the J region.

[0019] List of reference numerals 1. Measuring mounting components; 101. Measuring mounting frame; 102. Measuring mounting plate; 103. Folding rod; 2. Conveying and flattening components; 201. Conveying motor; 202. Conveying roller; 203. Flattening motor; 204. Flattening roller; 205. Flattening spiral; 3. Measuring abutment components; 301. Telescopic mounting cylinder; 3011. Stop block; 302. Telescopic inner cylinder; 3021. Telescopic slide bar; 303. Abutment 304 Electric push rod; 305 Ball sleeve; 3051 Guide strip; 4. Laser measuring component; 401 Laser measuring plate; 402 Laser rangefinder; 5. Reference calibration component; 501 Calibration plate; 502 Swing rod; 6. Membrane edge detection component; 601 Electrical connection post; 6011 Rotating shaft; 602 Battery; 603 Indicator light; 604 Swing rod; 6041 Drag reduction ball. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described 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.

[0021] Example 1: Please refer to Figures 1 to 10 : This invention proposes a thickness measuring device for a high-temperature resistant composite food packaging film production line, comprising a measuring mounting component 1, on which a conveying and flattening component 2 is mounted; the conveying and flattening component 2 is used to flatten the food packaging film; two measuring abutment components 3 are mounted on the measuring mounting component 1; laser measuring components 4 are mounted on the two measuring abutment components 3; a reference calibration component 5 is mounted on the measuring mounting component 1; two film edge detection components 6 are mounted on the measuring mounting component 1; the measuring mounting component 1 includes: a measuring mounting frame 101 and measuring mounting plates 102, with four measuring mounting plates 102 fixedly mounted on the measuring mounting frame 101; and four through slots at the bottom of the measuring mounting frame 101.

[0022] In this embodiment, the measuring mounting component 1 further includes: folding rods 103, with three folding rods 103 fixedly mounted on the bottom of the two upper measuring mounting plates 102 respectively; and two folding rods 103 fixedly mounted on the top of the two lower measuring mounting plates 102 respectively; the folding rods 103 have an L-shaped structure; the conveying and flattening component 2 includes: a conveying motor 201, a conveying roller 202, a flattening motor 203, a flattening roller 204, and a flattening spiral 205; the conveying motor 201 is fixedly mounted on the measuring mounting frame 101; the output shaft of the conveying motor 201 passes through the measuring mounting frame 101; the conveying roller 202 is fixedly mounted on the output shaft of the conveying motor 201, and the conveying roller 202 is rotatably mounted on the measuring mounting frame 101; the flattening motor 203 is fixedly mounted on... On the measuring mounting frame 101, the output shaft of the flattening motor 203 passes through the measuring mounting frame 101; a flattening roller 204 is fixedly mounted on the output shaft of the flattening motor 203, and the flattening roller 204 is rotatably mounted on the measuring mounting frame 101; two flattening spirals 205 are fixedly mounted on the flattening roller 204, and the two flattening spirals 205 are arranged opposite each other; a gap is provided between the conveying roller 202 and the flattening roller 204; the flattening spirals 205 are of rubber elastic structure; the measuring abutment 3 includes: a telescopic mounting cylinder 301, a stop block 3011, a telescopic inner cylinder 302, a telescopic slide bar 3021, and an abutment electric push rod 303; the telescopic mounting cylinder 301 is fixedly mounted on the measuring mounting frame 101; the telescopic inner cylinder is slidably sleeved inside the telescopic mounting cylinder 301. 302; A telescopic slide bar 3021 is fixedly installed at the bottom of the telescopic inner cylinder 302, and the telescopic slide bar 3021 is slidably installed inside the telescopic mounting cylinder 301; an abutment electric push rod 303 is fixedly sleeved on the inner side of the telescopic inner cylinder 302, and the output shaft of the abutment electric push rod 303 is fixedly installed inside the telescopic mounting cylinder 301; a stop block 3011 is fixedly sleeved on the telescopic mounting cylinder 301; the measuring abutment 3 also includes: an abutment spring 304, a ball sleeve 305 and a guide bar 3051, the abutment spring 304 is located inside the telescopic inner cylinder 302; the ball sleeve 305 is slidably inserted into the telescopic inner cylinder 302; a guide bar 3051 is fixedly installed at the top of the telescopic inner cylinder 302, and the guide bar 3051 is slidably installed inside the telescopic inner cylinder 302; One end of the abutment spring 304 is fixedly connected to the inside of the ball sleeve 305, and the other end of the abutment spring 304 is fixedly connected to the inside of the telescopic inner cylinder 302; the end of the ball sleeve 305 is embedded with a ball; the measuring mounting part 1 is used, and the staggered folding rods 103 are used to guide the folding of the packaging film after it is input, so as to facilitate the folding of the packaging film and facilitate the subsequent simultaneous thickness measurement of multiple layers. This ensures that the deviation of the measurement result can be fully reflected, and avoids that the deviation is too small when measuring a single layer, which makes it difficult for the laser rangefinder 402 to measure accurately. At the same time, this structure can realize the continuous measurement of multiple layers of packaging film. With the help of two measuring abutment parts 3, it can realize rolling clamping without affecting the continuous conveying of the packaging film. The structure is more reasonable and can realize online continuous measurement, improving the efficiency of the production line.The flattening spiral 205 facilitates the re-flattening and output of the folded packaging film, ensuring structural rationality and not affecting subsequent winding and collection. After being conveyed by the production line, the packaging film passes between the staggered folding rods 103, and then between the conveyor rollers 202 and the flattening rollers 204. The conveyor motor 201 and the flattening motor 203 are started and their speeds are adjusted before subsequent winding and other operations are performed. The packaging film passing through the folding rods 103 is wavy, as shown in the attached image. Figure 2 As shown, the rotation speed of the conveyor roller 202 can be controlled at this time to adjust the tension of the packaging film. With the flattening roller 204 rotating at a speed greater than that of the conveyor roller 202, the packaging film is flattened outward by the friction of the flattening spiral 205 in a slipping manner, thus maintaining the flatness of the output.

[0023] In this embodiment, the laser measuring component 4 includes a laser measuring plate 401 and a laser rangefinder 402. Two laser measuring plates 401 are provided, and the two laser measuring plates 401 are respectively fixedly installed on two ball sleeves 305. The laser rangefinder 402 is fixedly installed on the front laser measuring plate 401. The benchmark calibration component 5 includes a calibration plate 501 and a swing rod 502. The calibration plate 501 is rotatably installed on the telescopic mounting cylinder 301. The end of the calibration plate 501 has a beveled structure. The swing rod 502 is fixedly installed on the calibration plate 501. The calibration plate 501 is used to flip and stop the ball sleeve 305. By using the laser measuring component 4 in conjunction with the benchmark calibration component 5, the benchmark calibration work can be automatically performed, avoiding the influence of excessive wear of the balls at the end of the ball sleeve 305 on the measurement accuracy. This can assist the staff in inspection and improve the accuracy of the measurement results.

[0024] In Example 2, based on Example 1, the membrane edge detection component 6 includes: a terminal post 601, a rotating shaft 6011, a battery 602, and an indicator light 603. The terminal post 601 is fixedly mounted on the measuring mounting plate 102, and the rotating shaft 6011 is rotatably mounted on the bottom of the terminal post 601. The battery 602 is fixedly mounted on the measuring mounting plate 102. The indicator light 603 is fixedly mounted on the measuring mounting plate 102. The membrane edge detection component 6 also includes: a swing rod 604, which is fixedly mounted on the rotating shaft 6011. A torsion spring connects the end of the rotating shaft 6011 and the terminal post 601. The membrane edge detection component 6 also includes: a drag-reducing ball 6041, which is embedded on the side of the swing rod 604 and aligned with the folded edge rod 103 on the same side. The swing rod 604, the battery 6011, the rotating shaft 6011, the battery 602, the rotating shaft 6011, the battery 602, the battery 602, the indicator light 603, the battery 602, the battery 602, the indicator light 603, the battery 602, the battery 602, the battery 602, the battery 602, the battery 602, the battery 602, the battery 602, the battery 602, the battery 603 ... Pool 602, indicator light 603, and folding rod 103 on the same side are connected in series. The use of film edge detection component 6 can facilitate the detection of the conveying status of the packaging film between the folding rods 103, and can facilitate the detection of the offset of the packaging film. This avoids the packaging film edge being lower than the end of the ball sleeve 305 due to excessive conveying offset, resulting in less contact and adhesion of the packaging film, causing the detection data deviation, which is not promptly noticed by the operator. This structure can directly perform detection and prompting work to ensure that the conveying offset of the packaging film meets the standard. Once the packaging film is offset, the packaging film on one side is lower than the drag-reducing ball 6041. At this time, the drag-reducing ball 6041 will directly and elastically adhere to the folding rod 103 on the same side. At this time, the series circuit of indicator light 603 is connected, and the light will light up to provide a prompt. The operator needs to make timely adjustments.

[0025] The working principle of this embodiment is as follows: First, the through slot at the bottom of the measuring mounting frame 101 is bolted to the ground. After the packaging film is conveyed by the production line, it passes between the staggered folding rods 103, and then between the conveyor rollers 202 and the flattening rollers 204. The conveyor motor 201 and the flattening motor 203 are started respectively, and the speed is adjusted. Then, subsequent winding and other operations are performed. The packaging film passing through the folding rods 103 is wavy, as shown in the attached figure. Figure 2As shown, the rotation speed of the conveyor roller 202 can be controlled to adjust the tension of the packaging film. The flattening roller 204 rotates at a higher speed than the conveyor roller 202, and the friction of the flattening spiral 205 helps to flatten the packaging film outwards in a slipping manner, maintaining output flatness. When the thickness of the packaging film needs to be measured, the two abutting electric push rods 303 are controlled to drive the two telescopic inner cylinders 302 to extend, causing the balls at the ends of the two ball sleeves 305 to adhere to both sides of the folded packaging film. During this process, the balls at the ends of the ball sleeves 305 can rotate to adapt to the conveying of the packaging film. At the same time, the two abutting springs 304 are compressed, keeping the balls at the ends of the two ball sleeves 305 elastically attached to both sides of the packaging film. At this time, the distance between the laser measuring plate 401 opposite can be measured by the laser rangefinder 402, and the accuracy deviation can be obtained by observing the change in the reading. When there is no packaging film between the balls at the ends of the two ball sleeves 305, the laser rangefinder can measure the distance between the two balls. The distance between the distance measuring instrument 402 and the opposite laser measuring plate 401 is the zero point, which can be calibrated in advance. This structure measures the thickness by folding the edges, which is in line with the conveying direction of the packaging film and can reduce the interference of wrinkles generated by the packaging film during the conveying and unloading process. The packaging film passes through the folding rods 103 on both sides. During the conveying process, the two sides of the packaging film can be spaced between the folding rods 103 and the drag-reducing ball 6041 on both sides. Under the torsion of the torsion spring on the rotating shaft 6011, the drag-reducing ball 6041 is kept in elastic contact with the packaging film. At the same time, the drag-reducing ball 6041 can adapt to the displacement of the packaging film by rolling. Once the packaging film shifts, if the packaging film on one side is lower than the drag-reducing ball 6041, there is a risk of continuous shift and detachment from the ball sleeve 305. At this time, the drag-reducing ball 6041 will directly and elastically contact the folding rod 103 on the same side, losing the insulation interval of the packaging film. At this time, the series circuit of the indicator light 603 is turned on, and the light will be lit to indicate.

[0026] By manually moving the lever 502, the calibration plate 501 is flipped up and pressed against the stop block 3011. At this time, the side of the calibration plate 501 can press against the ball at the end of the ball sleeve 305, squeezing the ball sleeve 305 to retract. Then, the distance between the laser measuring plate 401 on the opposite side can be measured by the laser rangefinder 402. By recording the data of each measurement, the wear condition of the ball at the end of the ball sleeve 305 can be obtained.

[0027] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0028] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0029] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A thickness measuring device for a high-temperature resistant composite food packaging film production line, comprising a measuring mounting component (1), wherein a conveying and flattening component (2) is mounted on the measuring mounting component (1); characterized in that: The conveying and flattening component (2) is used to flatten the food packaging film; two measuring abutments (3) are installed on the measuring mounting component (1); laser measuring components (4) are installed on the two measuring abutments (3). A reference calibration component (5) is installed on the measuring mounting component (1); two membrane edge detection components (6) are installed on the measuring mounting component (1). The measuring mounting component (1) includes: a measuring mounting frame (101) and a measuring mounting plate (102), and four measuring mounting plates (102) are fixedly mounted on the measuring mounting frame (101); the bottom of the measuring mounting frame (101) is provided with four through slots.

2. The thickness measuring device for a high-temperature resistant composite food packaging film production line according to claim 1, characterized in that, The measuring mounting component (1) further includes: a folding rod (103), with three folding rods (103) fixedly installed at the bottom of the two upper measuring mounting plates (102); and two folding rods (103) fixedly installed at the top of the two lower measuring mounting plates (102); the folding rod (103) has an L-shaped structure.

3. The thickness measuring device for a high-temperature resistant composite food packaging film production line according to claim 1, characterized in that, The conveying and flattening component (2) includes: a conveying motor (201), a conveying roller (202), a flattening motor (203), a flattening roller (204), and a flattening spiral (205). The conveying motor (201) is fixedly mounted on the measuring mounting frame (101); the output shaft of the conveying motor (201) passes through the measuring mounting frame (101); the conveying roller (202) is fixedly mounted on the output shaft of the conveying motor (201), and the conveying roller (202) is rotatably mounted on the measuring mounting frame (101); the flattening motor (203)... The machine (203) is fixedly installed on the measuring mounting frame (101), and the output shaft of the flattening motor (203) passes through the measuring mounting frame (101); a flattening roller (204) is fixedly installed on the output shaft of the flattening motor (203), and the flattening roller (204) is rotatably installed on the measuring mounting frame (101); two flattening spirals (205) are fixedly installed on the flattening roller (204), and the two flattening spirals (205) are arranged opposite to each other; a gap is provided between the conveying roller (202) and the flattening roller (204).

4. The thickness measuring device for a high-temperature resistant composite food packaging film production line according to claim 1, characterized in that, The measuring abutment (3) includes: a telescopic mounting cylinder (301), a stop block (3011), a telescopic inner cylinder (302), a telescopic slide bar (3021), and an abutment electric push rod (303). The telescopic mounting cylinder (301) is fixedly mounted on the measuring mounting frame (101). The telescopic inner cylinder (302) is slidably sleeved inside the telescopic mounting cylinder (301). The telescopic slide bar (3021) is fixedly mounted at the bottom of the telescopic inner cylinder (302), and the telescopic slide bar (3021) is slidably mounted inside the telescopic mounting cylinder (301). The abutment electric push rod (303) is fixedly sleeved inside the telescopic inner cylinder (302), and the output shaft of the abutment electric push rod (303) is fixedly mounted inside the telescopic mounting cylinder (301). The stop block (3011) is fixedly sleeved on the telescopic mounting cylinder (301).

5. The thickness measuring device for a high-temperature resistant composite food packaging film production line according to claim 4, characterized in that, The measuring abutment (3) further includes: abutment spring (304), ball sleeve (305) and guide strip (3051). The abutment spring (304) is located inside the telescopic inner cylinder (302). The ball sleeve (305) is slidably inserted into the telescopic inner cylinder (302). The guide strip (3051) is fixedly installed on the top of the telescopic inner cylinder (302) and is slidably installed inside the telescopic inner cylinder (302). One end of the abutment spring (304) is fixedly connected to the inside of the ball sleeve (305), and the other end of the abutment spring (304) is fixedly connected to the inside of the telescopic inner cylinder (302). The end of the ball sleeve (305) is embedded with a ball.

6. The thickness measuring device for a high-temperature resistant composite food packaging film production line according to claim 5, characterized in that, The laser measuring component (4) includes: a laser measuring plate (401) and a laser rangefinder (402). There are two laser measuring plates (401), and the two laser measuring plates (401) are respectively fixedly installed on two ball sleeves (305). The laser rangefinder (402) is fixedly installed on the front side of the laser measuring plate (401).

7. The thickness measuring device for a high-temperature resistant composite food packaging film production line according to claim 5, characterized in that, The reference calibration component (5) includes: a calibration plate (501) and a rocker arm (502). The calibration plate (501) is rotatably mounted on the telescopic mounting cylinder (301). The end of the calibration plate (501) is a bevel structure. The rocker arm (502) is fixedly mounted on the calibration plate (501). The calibration plate (501) is used to flip the stop ball sleeve (305).

8. The thickness measuring device for a high-temperature resistant composite food packaging film production line according to claim 2, characterized in that, The membrane edge detection component (6) includes: a power supply post (601), a rotating shaft (6011), a battery (602), and an indicator light (603). The power supply post (601) is fixedly installed on the measuring mounting plate (102), and the rotating shaft (6011) is rotatably installed at the bottom of the power supply post (601). The battery (602) is fixedly installed on the measuring mounting plate (102). The indicator light (603) is fixedly installed on the measuring mounting plate (102).

9. The thickness measuring device for a high-temperature resistant composite food packaging film production line according to claim 8, characterized in that, The membrane edge detection component (6) further includes: a swing rod (604), which is fixedly installed on the rotating shaft (6011); a torsion spring is connected between the end of the rotating shaft (6011) and the power connection post (601).

10. The thickness measuring device for a high-temperature resistant composite food packaging film production line according to claim 9, characterized in that, The membrane edge detection component (6) further includes: a drag-reducing ball (6041), the drag-reducing ball (6041) is embedded on the side of the swing rod (604), and the drag-reducing ball (6041) is aligned with the folded edge rod (103) on the same side; the swing rod (604), battery (602), indicator light (603) and folded edge rod (103) on the same side are connected in series.

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