Broken paper judging and recycling system

Abstract

The invention provides a broken paper judgment and recovery system which comprises a U-shaped mounting frame, an electric control box, an upper detection table, a lower detection table and a broken hole detection mechanism. The broken hole detection mechanism comprises a light transmitting plate, a net plate, a light emitting array, a light receiving array, a transverse electric sliding table, a vertical electric sliding table, a first electric push rod, a moving plate, a micro fan, a contact plate, a connecting rod, a diameter adjusting mechanism and an air volume sensor; whether a broken hole exists in the paper or not can be determined through the light transmission amount, the position of the broken hole is roughly determined, then the paper is moved to the net plate, the moving plates arranged up and down are moved to the position of the broken hole in the paper, the micro fan can blow air to the broken hole, and the contact plate can make contact with the bottom face of the broken hole in the paper. The diameter of the through hole can be adjusted through the diameter adjusting mechanism, and the hole diameter of the broken hole can be determined according to air volume data collected by the air volume sensor.

Description

Technical Field

[0001] The present invention relates to the technical field of paper production, and in particular to a damaged paper judging and recycling system. Background Art

[0002] In the papermaking and printing and packaging industries, quality issues such as holes often occur during paper production and processing due to mechanical failures, raw material defects, or process fluctuations. This type of unqualified paper is collectively referred to as broken paper. If broken paper is mixed into the finished product, it will seriously affect product quality. Therefore, broken paper is identified at the end of the paper production line. Traditional broken paper identification mostly relies on manual visual inspection, which has a low recognition rate for tiny holes. Although some existing optical inspection equipment can detect the presence of holes in paper, it cannot specifically locate the position and size of the holes. As a result, production personnel cannot determine the cause of the holes based on their location on the paper. In addition, existing inspection equipment does not have the ability to perform secondary detection of holes, and cannot guarantee the accuracy of the broken paper identification results. Summary of the Invention

[0003] In view of this, the present invention proposes a damaged paper judgment and recycling system, which detects whether the paper has a hole through optical signals, and then determines the position and size of the hole in combination with air flow to ensure the accuracy of the hole detection structure.

[0004] The technical solution of the present invention is achieved as follows:

[0005] A damaged paper judgment and recycling system includes a U-shaped mounting frame, an electric control box, an upper detection platform, a lower detection platform and a hole detection mechanism, wherein the opening of the U-shaped mounting frame faces one side, the electric control box is arranged on the open side of the U-shaped mounting frame, the upper detection platform is arranged above the inside of the U-shaped mounting frame, and the lower detection platform is arranged below the inside of the U-shaped mounting frame, and a detection channel for paper to pass through is formed between the upper detection platform and the lower detection platform; the hole detection mechanism includes a light-transmitting plate, a screen plate, a light-emitting array, a light-receiving array, a horizontal electric slide, a vertical electric slide, a first electric push rod, a moving plate, a micro-blower, a contact plate, a connecting rod, a diameter adjustment mechanism and an air volume sensor, the top surface of the lower detection platform is open, the light-transmitting plate and the screen plate are arranged on the top surface of the lower detection platform in sequence according to the paper conveying direction, the light-emitting array is arranged on the bottom surface of the upper detection platform, and is located at the light-transmitting plate The plate is above the light receiving array, which is arranged in the lower detection platform and below the light transmitting plate. The horizontal electric slide is arranged on the bottom surface of the upper detection platform and in the lower detection platform, and its mover is connected to the vertical electric slide. The first electric push rod is arranged on the mover of the vertical electric slide, and its output shaft is connected to the movable plate. The mesh plate is located between the upper and lower movable plates. The micro fan is arranged on the bottom surface of the upper movable plate, and the contact plate is located above the lower movable plate. The connecting rod connects the contact plate and the movable plate. A through hole is provided on the contact plate. The diameter adjustment mechanism is used to adjust the diameter of the through hole. The air volume sensor is arranged on the movable plate and below the through hole. The electrical control box is electrically connected to the light emitting array, the light receiving array, the horizontal electric slide, the vertical electric slide, the first electric push rod, the micro fan, the diameter adjustment mechanism and the air volume sensor respectively.

[0006] Preferably, it also includes a conveying mechanism, which includes a second electric push rod, a lifting plate and a paper pickup wheel. The second electric push rod is arranged on the bottom surface of the upper detection platform, and its output shaft is connected to the top surface of the lifting plate. The paper pickup wheel is arranged on the bottom surface of the lifting plate, and the electrical control box is electrically connected to the second electric push rod.

[0007] Preferably, the diameter adjustment mechanism includes a memory alloy wire ring, a corrugated diaphragm and a heating mechanism. The memory alloy wire ring is located in the through hole. One side of the corrugated diaphragm is connected to the outer wall of the memory alloy wire ring, and the other side is connected to the inner wall of the through hole. The heating mechanism is used to heat the memory alloy wire ring, and the electrical control box is electrically connected to the heating mechanism.

[0008] Preferably, the heating mechanism includes a constant current power supply and a wire, the constant current power supply is arranged on the top surface of the movable plate, one end of the wire is electrically connected to the constant current power supply, and the other end is electrically connected to the memory alloy wire ring, and the electric control box is electrically connected to the constant current power supply.

[0009] Preferably, the hole detection mechanism further includes an air guide plate, and the air guide plate is arranged on the side wall of the connecting rod.

[0010] Preferably, it further comprises an infrared scanner, which is arranged on the bottom surface of the upper movable plate, and the electric control box is electrically connected to the infrared scanner.

[0011] Preferably, the hole detection mechanism further includes a partition, which is arranged in the lower detection platform, and the light-transmitting plate and the mesh plate are located on both sides of the partition.

[0012] Preferably, the hole detection mechanism further includes a pressing mechanism, which includes a spring and a pressing plate. The spring is arranged on the side wall of the upper movable plate, and the bottom end of the spring is connected to the top surface of the pressing plate.

[0013] Preferably, the clamping mechanism further includes a sleeve and a telescopic rod, the sleeve is arranged on the side wall of the movable plate, the spring is located in the sleeve, the top end of the telescopic rod extends into the sleeve and is connected to the spring, and the bottom end is connected to the top surface of the pressure plate.

[0014] Preferably, the pressing mechanism further includes a cotton sheet, and the cotton sheet is arranged on the bottom surface of the pressing plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] ① The paper to be inspected passes through the inspection channel. The light emitting array can illuminate the paper. If there is a hole on the paper, the light will pass through the hole and pass through the light-transmitting plate before being received by the light receiving array. The position and intensity of the light received by the light receiving array can roughly determine the location of the hole on the paper, thereby determining whether the paper is damaged. Non-contact judgment can reduce human influence and improve detection accuracy.

[0017] ② After the paper moves to the top of the screen, the horizontal electric slide and the vertical electric slide can respectively drive the upper and lower movable plates to move to the hole position, and then the contact plate will contact the bottom of the hole position. The micro fan on the upper movable plate can blow a constant amount of air downward. After the wind passes through the hole position of the paper, it will be transported to the air volume sensor through the through hole of the contact plate. After changing the size of the through hole diameter, the data collected by the air volume sensor can be used to determine the approximate diameter of the hole position. On the one hand, the hole position can be detected for the second time, and on the other hand, the size of the hole position can be determined to facilitate the evaluation of whether there is a problem with the previous processing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a structural schematic diagram of a damaged paper determination and recovery system of the present invention;

[0020] Figure 2 This is a schematic diagram of the connection structure of the upper detection platform, the lower detection platform and the hole detection mechanism of a broken paper judgment and recovery system of the present invention;

[0021] Figure 3 This is a schematic diagram of the connection structure between the moving plate and the contact plate of a broken paper judgment and recovery system of the present invention;

[0022] Figure 4 This is a schematic diagram of the connection structure between a movable plate and a micro-blower of a broken paper judging and recycling system of the present invention;

[0023] In the figure, 1. U-shaped mounting frame; 2. electric control box; 3. upper detection platform; 4. lower detection platform; 5. detection channel; 6. light-transmitting plate; 7. screen plate; 8. light-emitting array; 9. light-receiving array; 10. horizontal electric slide; 11. vertical electric slide; 12. first electric push rod; 13. moving plate; 14. micro fan; 15. contact plate; 16. connecting rod; 17. air volume sensor; 18. through hole; 19. second electric push rod; 20. lifting plate; 21. paper pickup roller; 22. memory alloy wire ring; 23. corrugated diaphragm; 24. constant current power supply; 25. wire; 26. air guide plate; 27. infrared scanner; 28. partition; 29. spring; 30. pressure plate; 31. sleeve; 32. telescopic rod; 33. cotton sheet. DETAILED DESCRIPTION

[0024] In order to better understand the technical content of the present invention, a specific embodiment is provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0025] See also Figures 1 to 4The present invention provides a damaged paper judgment and recycling system, which includes a U-shaped mounting frame 1, an electric control box 2, an upper detection platform 3, a lower detection platform 4 and a hole detection mechanism. The opening of the U-shaped mounting frame 1 faces one side, and the electric control box 2 is arranged on the open side of the U-shaped mounting frame 1. The upper detection platform 3 is arranged above the inside of the U-shaped mounting frame 1, and the lower detection platform 4 is arranged below the inside of the U-shaped mounting frame 1, and a detection channel 5 for paper to pass through is formed between the upper detection platform 3; the hole detection mechanism includes a light-transmitting plate 6, a screen plate 7, a light-emitting array 8, a light-receiving array 9, a horizontal electric slide 10, a vertical electric slide 11, a first electric push rod 12, a moving plate 13, a micro-blower 14, a contact plate 15, a connecting rod 16, a diameter adjustment mechanism and an air volume sensor 17. The top surface of the lower detection platform 4 is open, and the light-transmitting plate 6 and the screen plate 7 are arranged on the top surface of the lower detection platform 4 in sequence according to the paper conveying direction. The light-emitting array 8 is arranged on the bottom surface of the upper detection platform 3 and is located above the light-transmitting plate 6. The light receiving array 9 is arranged in the lower detection platform 4 and is located below the light-transmitting plate 6. The horizontal electric slide 10 is arranged on the bottom surface of the upper detection platform 3 and in the lower detection platform 4. Its mover is connected to the vertical electric slide 11. The first electric push rod 12 is arranged on the mover of the vertical electric slide 11, and its output shaft is connected to the movable plate 13. The mesh plate 7 is located between the upper and lower movable plates 13. The micro fan 14 is arranged on the bottom surface of the upper movable plate 13. The contact plate 15 is located above the lower movable plate 13. The connecting rod 16 connects the contact plate 15 and the movable plate 13. A through hole 18 is provided on the contact plate 15. The diameter adjustment mechanism is used to adjust the diameter of the through hole 18. The air volume sensor 17 is arranged on the movable plate 13 and is located below the through hole 18. The electrical control box 2 is electrically connected to the light emitting array 8, the light receiving array 9, the horizontal electric slide 10, the vertical electric slide 11, the first electric push rod 12, the micro fan 14, the diameter adjustment mechanism and the air volume sensor 17 respectively.

[0026] A damaged paper judgment and recycling system of the present invention is used to detect whether the produced toilet paper has holes, wherein the finished toilet paper will be conveyed to one side of the U-shaped mounting frame 1 and pass through the detection channel 5 between the upper detection platform 3 and the lower detection platform 4. The toilet paper will first move to the top of the light-transmitting plate 6, and the light emitting array 8 can be turned on by the electrical control box 2. The light emitting array 8 can irradiate light to the toilet paper. If there is a hole in the toilet paper, the light will pass through the hole and pass through the light-transmitting plate 6. A light receiving array 9 is provided below the light-transmitting plate 6 to receive the light passing through the light-transmitting plate 6. The electrical control box 2 can receive the information sent by the light receiving array 9. Based on the position and intensity of the received light, the position and size of the hole can be roughly judged, so that the paper can be judged as damaged paper and recycled to avoid flowing into the market to affect the manufacturer, resulting in the manufacturer's normal sales being unable to proceed.

[0027] When the light emitting array 8 and the light receiving array 9 detect that there is a hole in the paper, this process is the initial inspection. After the paper suspected of having a hole is transported to the top of the screen 7, a secondary inspection can be performed. The screen 7 is provided with a horizontal electric slide 10 and a vertical electric slide 11 above and below. The horizontal electric slide 10 and the vertical electric slide 11 can drive the movable plate 13 to move, so as to move the movable plates 13 arranged above and below to the upper and lower sides of the suspected hole position of the paper. The first electric push rod 12 on the lower movable plate 13 can push the movable plate 13 to drive the contact plate through the connecting rod 16. 15 rises, so that the contact plate 15 contacts the bottom surface of the paper, and the through hole 18 of the contact plate 15 is aligned with the position of the hole in the paper. At this time, the micro fan 14 of the upper movable plate 13 can be turned on, and the micro fan 14 can blow air onto the paper. The air volume and wind speed of the micro fan 14 can be adjusted by the electric control box 2. If there is indeed a hole in the paper, the air blown by the micro fan 14 will pass through the hole in the paper and blow onto the air volume sensor 17 through the through hole 18 on the contact plate 15. If the air volume sensor 17 collects air volume data, it can be determined that there is indeed a hole in the paper.

[0028] In addition to the secondary detection of whether there is a hole, the present invention can also detect the specific position and size of the hole. Initially, the air volume of the micro fan 14 is set relatively high, and the diameter of the through hole 18 is also at its largest state. The two movable plates 13 are moved along the paper, so that the micro fan 14 and the contact plate 15 are slowly moved to the upper and lower sides of the hole. When the through hole 18 does not completely cover the bottom of the hole position, the air volume data collected by the air volume sensor 17 is constantly increasing. When the through hole 18 completely covers the bottom of the hole position, the air volume data collected by the air volume sensor 17 remains unchanged for a period of time. After the front side of the through hole 18 moves away from the hole position, the air volume collected by the air volume sensor 17 will become smaller. At this time, the specific position of the hole can be determined, and then the size of the hole needs to be determined. When performing air volume detection, a segmented detection method is adopted. First, the center of the through hole 18 is aligned with the center of the hole position, and then Then, the air volume of the micro fan 14 is kept constant. Initially, the diameter of the through hole 18 of the contact plate 15 is larger than the size of the hole position. After the air volume passes through the hole position, it will all pass through the through hole 18. The air volume sensor 17 can collect the air volume data at this time, and then continuously adjust the diameter of the through hole 18 through the diameter adjustment mechanism. When the diameter of the through hole 18 is always larger than the diameter of the hole position, the air volume will not change. When the diameter of the through hole 18 is smaller than the hole position, the air volume passing through the through hole 18 will change. At this time, the air volume data collected by the air volume sensor 17 will become smaller. At this time, it can be considered that the diameter of the through hole 18 is smaller than the hole position, and the previous diameter of the through hole 18 is equivalent to the size of the hole, so as to evaluate the size of the hole, thereby evaluating the damaged state of the damaged paper, and tracing back to determine the previous production process with problems, so that timely repair and maintenance can be carried out to ensure that the subsequent toilet paper production can proceed normally and reduce the increase in the amount of damaged paper.

[0029] Preferably, it also includes a conveying mechanism, which includes a second electric push rod 19, a lifting plate 20 and a paper pickup roller 21. The second electric push rod 19 is arranged on the bottom surface of the upper detection platform 3, and its output shaft is connected to the top surface of the lifting plate 20. The paper pickup roller 21 is arranged on the bottom surface of the lifting plate 20, and the electric control box 2 is electrically connected to the second electric push rod 19.

[0030] In order to realize the automatic conveying of paper, the present invention is provided with a conveying mechanism. After one side of the paper is placed into the detection channel 5, the second electric push rod 19 can drive the lifting plate 20 to descend, so that the paper pickup roller 21 contacts the top surface of the toilet paper. After starting the paper pickup roller 21, the paper pickup roller 21 can drive the paper to be conveyed along the detection channel 5, so that the paper can be conveyed to the light-transmitting plate 6 and the screen plate 7 for multiple hole detections.

[0031] Preferably, the diameter adjustment mechanism includes a memory alloy wire ring 22, a corrugated diaphragm 23 and a heating mechanism. The memory alloy wire ring 22 is located in the through hole 18. One side of the corrugated diaphragm 23 is connected to the outer wall of the memory alloy wire ring 22, and the other side is connected to the inner wall of the through hole 18. The heating mechanism is used to heat the memory alloy wire ring 22, and the electrical control box 2 is electrically connected to the heating mechanism.

[0032] The memory alloy wire ring 22 and the through hole 18 are concentric structures, and its outer wall is connected to the inner wall of the through hole 18 through a corrugated diaphragm 23. The corrugated diaphragm 23 can achieve sealing so that wind can only flow through the middle of the memory alloy wire ring 22. After the memory alloy wire ring 22 is heated by the heating mechanism, the memory alloy wire ring 22 will shrink and its diameter will shrink, thereby increasing the aperture and pulling the corrugated diaphragm 23 to stretch and maintain a sealed state. Different heat can be applied to the memory alloy wire ring 22 through the heating mechanism to change the aperture, so that the position and size of the hole can be detected.

[0033] Preferably, the heating mechanism includes a constant current power supply 24 and a wire 25, the constant current power supply 24 is arranged on the top surface of the movable plate 13, one end of the wire 25 is electrically connected to the constant current power supply 24, and the other end is electrically connected to the memory alloy wire ring 22, and the electrical control box 2 is electrically connected to the constant current power supply 24.

[0034] The constant current power supply 24 can inject current into the memory alloy wire ring 22 through the wire 25, and heat the memory alloy wire ring 22 through the current. By changing the size of the injected current, the heating amount can be adjusted to achieve the adjustment of the aperture size.

[0035] Preferably, the hole detection mechanism further includes an air guide plate 26 , and the air guide plate 26 is arranged on the side wall of the connecting rod 16 .

[0036] An air guide plate 26 is provided on the side wall of the connecting rod 16 to guide the wind that may overflow from above to the outside, so as to avoid affecting the data collection accuracy of the air volume sensor 17.

[0037] Preferably, it further includes an infrared scanner 27 , which is disposed on the bottom surface of the upper movable plate 13 , and the electric control box 2 is electrically connected to the infrared scanner 27 .

[0038] The infrared scanner 27 can perform quantitative analysis and moisture analysis on the paper, thereby evaluating whether the quality of the paper meets the requirements.

[0039] Preferably, the hole detection mechanism further includes a partition 28 , which is disposed in the lower detection platform 4 , and the light-transmitting plate 6 and the screen plate 7 are located on both sides of the partition 28 .

[0040] The partition 28 is used to separate the light-transmitting plate 6 and the screen plate 7 so that the paper can be moved to the light-transmitting plate 6 and the screen plate 7 respectively for multiple hole detection.

[0041] Preferably, the hole detection mechanism further includes a pressing mechanism, which includes a spring 29 and a pressing plate 30 . The spring 29 is arranged on the side wall of the upper movable plate 13 , and its bottom end is connected to the top surface of the pressing plate 30 .

[0042] During secondary hole detection, in order to prevent the paper from being deflected by the wind blown by the micro-fan 14, the present invention is provided with a clamping mechanism. The upper movable plate 13 can be lowered by the first electric push rod 12, and the bottom surface of the pressure plate 30 is lower than the height of the micro-fan 14. When the first electric push rod 12 drives the movable plate 13 to descend, the pressure plate 30 will first contact the surface of the paper and press the paper through the spring 29.

[0043] Preferably, the clamping mechanism also includes a sleeve 31 and a telescopic rod 32. The sleeve 31 is arranged on the side wall of the movable plate 13. The spring 29 is located in the sleeve 31. The top end of the telescopic rod 32 extends into the sleeve 31 and is connected to the spring 29. The bottom end is connected to the top surface of the pressure plate 30.

[0044] In order to prevent the pressure plate 30 from deviating and damaging the paper, a sleeve 31 is provided on the side wall of the movable plate 13. The telescopic rod 32 can move along the sleeve 31 to compress the spring 29 to ensure that the movement of the pressure plate 30 will not deviate, so that the bottom surface of the pressure plate 30 can be completely parallel to the surface of the paper.

[0045] Preferably, the pressing mechanism further includes a cotton sheet 33 , and the cotton sheet 33 is arranged on the bottom surface of the pressing plate 30 .

[0046] The cotton piece 33 is arranged on the bottom surface of the pressing plate 30. When the movable plate 13 descends, the cotton piece 33 can first contact the surface of the paper to avoid damaging the paper.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A damaged paper judgment and recovery system, characterized in that: The invention comprises a U-shaped mounting frame, an electric control box, an upper detection platform, a lower detection platform and a hole detection mechanism, wherein the opening of the U-shaped mounting frame faces one side, the electric control box is arranged on the open side of the U-shaped mounting frame, the upper detection platform is arranged above the interior of the U-shaped mounting frame, the lower detection platform is arranged below the interior of the U-shaped mounting frame, and a detection channel for paper to pass through is formed between the upper detection platform and the lower detection platform; the hole detection mechanism comprises a light-transmitting plate, a screen plate, a light-emitting array, a light-receiving array, a horizontal electric slide, a vertical electric slide, a first electric push rod, a moving plate, a micro-blower, a contact plate, a connecting rod, a diameter adjustment mechanism and an air volume sensor, the top surface of the lower detection platform is open, the light-transmitting plate and the screen plate are arranged on the top surface of the lower detection platform in sequence according to the paper conveying direction, the light-emitting array is arranged on the bottom surface of the upper detection platform and is located above the light-transmitting plate. The light receiving array is arranged in the lower detection platform and is located below the light-transmitting plate. The horizontal electric slide is arranged on the bottom surface of the upper detection platform and in the lower detection platform, and its mover is connected to the vertical electric slide. The first electric push rod is arranged on the mover of the vertical electric slide, and its output shaft is connected to the movable plate. The mesh plate is located between the upper and lower movable plates. The micro fan is arranged on the bottom surface of the upper movable plate, and the contact plate is located above the lower movable plate. The connecting rod connects the contact plate and the movable plate. A through hole is provided on the contact plate. The diameter adjustment mechanism is used to adjust the diameter of the through hole. The air volume sensor is arranged on the movable plate and is located below the through hole. The electrical control box is electrically connected to the light emitting array, the light receiving array, the horizontal electric slide, the vertical electric slide, the first electric push rod, the micro fan, the diameter adjustment mechanism and the air volume sensor respectively.

2. The damaged paper judging and recycling system according to claim 1, characterized in that: It also includes a conveying mechanism, which includes a second electric push rod, a lifting plate and a paper pickup wheel. The second electric push rod is arranged on the bottom surface of the upper detection platform, and its output shaft is connected to the top surface of the lifting plate. The paper pickup wheel is arranged on the bottom surface of the lifting plate, and the electrical control box is electrically connected to the second electric push rod.

3. The broken paper judging and recycling system according to claim 1, characterized in that: The diameter adjustment mechanism includes a memory alloy wire ring, a corrugated diaphragm and a heating mechanism. The memory alloy wire ring is located in the through hole. One side of the corrugated diaphragm is connected to the outer wall of the memory alloy wire ring, and the other side is connected to the inner wall of the through hole. The heating mechanism is used to heat the memory alloy wire ring, and the electrical control box is electrically connected to the heating mechanism.

4. The damaged paper judging and recycling system according to claim 3, characterized in that: The heating mechanism includes a constant current power supply and a wire. The constant current power supply is arranged on the top surface of the movable plate. One end of the wire is electrically connected to the constant current power supply, and the other end is electrically connected to the memory alloy wire ring. The electric control box is electrically connected to the constant current power supply.

5. The damaged paper judging and recycling system according to claim 1, characterized in that: The hole detection mechanism further includes an air guide plate, which is arranged on the side wall of the connecting rod.

6. The damaged paper judging and recycling system according to claim 1, characterized in that: It also includes an infrared scanner, which is arranged on the bottom surface of the upper movable plate, and the electric control box is electrically connected to the infrared scanner.

7. The broken paper judging and recycling system according to claim 1, characterized in that: The hole detection mechanism further comprises a partition, which is arranged in the lower detection platform, and the light-transmitting plate and the mesh plate are located on both sides of the partition.

8. The damaged paper judging and recycling system according to claim 1, characterized in that: The hole detection mechanism also includes a pressing mechanism, which includes a spring and a pressing plate. The spring is arranged on the side wall of the upper movable plate, and the bottom end of the spring is connected to the top surface of the pressing plate.

9. The broken paper judging and recycling system according to claim 8, characterized in that: The clamping mechanism also includes a sleeve and a telescopic rod. The sleeve is arranged on the side wall of the movable plate. The spring is located in the sleeve. The top end of the telescopic rod extends into the sleeve and is connected to the spring, and the bottom end is connected to the top surface of the pressing plate.

10. The broken paper judging and recycling system according to claim 9, characterized in that: The pressing mechanism further comprises a cotton sheet, which is arranged on the bottom surface of the pressing plate.

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