Light transmission detection equipment for agricultural PO film production

Abstract

The invention relates to the technical field of film light transmission detection, and particularly discloses a light transmission detection device for agricultural PO film production, the light transmission detection device comprises a detection mechanism for light transmission detection, one side of the detection mechanism is provided with a winding mechanism, the other side of the detection mechanism is provided with a film rolling mechanism, a cleaning mechanism is arranged above the film rolling mechanism, and the cleaning mechanism is arranged above the film rolling mechanism. A middle transmission mechanism, side collision mechanisms and an exhaust pipe are installed in the film rolling mechanism, the side collision mechanisms are located at the two ends of the middle transmission mechanism, and a high-pressure air pump is arranged outside the detection mechanism. Through the supporting rod design of the film rolling mechanism, a PO film is supported to form a conical frame structure, and dust is naturally removed; the side collision mechanism utilizes high-pressure gas to push a counterweight ring to generate vibration, and dust falling is accelerated; the cleaning mechanism cleans the surface of the linkage roller in real time through high-pressure gas and a brush.

Description

Technical Field

[0001] The invention belongs to the technical field of thin film light transmission detection, and in particular relates to a light transmission detection device for agricultural PO film production. Background Art

[0002] Agricultural PO film, also known as polyolefin film, is a high-tech coating product and an upgraded product of EVA film. It is made of high-grade olefin raw materials and other additives through external spraying and drying process. Agricultural PO film is usually produced through production lines. In the final step of production, a light transmission detection device is installed before the winding device to measure the light transmittance of the PO film to determine whether it meets the production requirements.

[0003] In the existing agricultural PO film production process, dust and other impurities often adhere to the surface of the PO film. These impurities will not only affect the accuracy of light transmittance detection, but may also have an adverse effect on subsequent performance. Some manufacturers adopt manual cleaning methods, that is, manually wiping the PO film before testing. However, this method is not only inefficient, but also cannot ensure that it can be thoroughly cleaned every time. Summary of the invention

[0004] The purpose of the present invention is to provide a light transmission detection device for agricultural PO film production to solve the problems existing in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A light transmission detection device for agricultural PO film production, comprising a detection mechanism for light transmission detection, a winding mechanism is arranged on one side of the detection mechanism, a film rolling mechanism is arranged on the other side of the detection mechanism, a cleaning mechanism is arranged above the film rolling mechanism, a middle transmission mechanism, a side impact mechanism and an exhaust pipe are installed inside the film rolling mechanism, the side impact mechanism is located at both ends of the middle transmission mechanism, and a high-pressure air pump is arranged outside the detection mechanism; the film rolling mechanism comprises a linkage roller and a support rod, the film rolling mechanism is used for linkage conveying PO film, and the support rod is used to support both sides of the PO film; the middle transmission mechanism comprises a middle cylinder box, an air intake pipe and a transmission rod, the middle transmission mechanism is used to drive the support rod to unfold, and the middle cylinder box is used to cooperate with the side impact mechanism; the side impact mechanism comprises a side cylinder box and a counterweight ring, the counterweight ring is used to impact and generate vibration to accelerate the falling of dust particles above the PO film; the cleaning mechanism comprises an air box and a brush, the brush is attached to the outer surface of the linkage roller and the support rod, and the cleaning mechanism is used to clean the linkage roller itself.

[0007] Preferably: both ends of the linkage roller are fixedly connected with plug-in shafts, the air inlet pipe and the exhaust pipe both pass through the plug-in shafts, a left-right symmetrical rectangular groove is opened on the periphery of the linkage roller, and one end of the support rod is rotatably connected to the inner side of the rectangular groove.

[0008] Preferably: a middle cavity and a side cavity are provided inside the linkage roller, the side cavities are located on both sides of the middle cavity, the middle cavity and the side cavities are interconnected, the middle cylinder box is installed inside the middle cavity, and the side cylinder box is located inside the side cavity.

[0009] Preferably: both ends of the middle cylinder box are provided with transmission rods, one end of the transmission rod located in the middle cylinder box is fixedly connected to the piston block, the other end of the transmission rod is rotatably connected to a connecting rod, and the end of the connecting rod away from the transmission rod is rotatably connected to the support rod.

[0010] Preferably: connecting slots and connecting slots are provided at both ends of both sides of the side cylinder box, an air intake slot is provided on the middle cylinder box, exhaust slots are provided on both sides of the middle cylinder box, one end of the air intake pipe is connected to the air intake slot, connecting pipes are provided on both sides of the middle cylinder box, one end of the connecting pipe is connected to the exhaust slot, the other end of the connecting pipe is connected to the connecting slot, and the connecting slot is used to connect the exhaust pipe.

[0011] Preferably: an end cover is installed at one end of the side cylinder box, a through hole is opened inside the side cylinder box, the through hole is used for the transmission rod to pass through, and a retaining ring is fixedly connected to the inner wall of the side cylinder box.

[0012] Preferably, a sealing ring is fixedly sleeved on the periphery of the counterweight ring, the sealing ring fits the inner wall of the side cylinder box, an elastic member is arranged on the side of the counterweight ring away from the retaining ring, and the elastic member is fixedly connected to the end cover.

[0013] Preferably: a connecting pipe is provided at one end of the air box, a mesh is provided at the bottom of the air box, the brushes are evenly arranged below the air box, the tops of the brushes are installed below the air box, and the connecting pipe is connected to one end of the exhaust pipe through a hose.

[0014] Preferably: the detection mechanism includes a mounting frame, a light source end and a detection end, the light source end is evenly arranged and installed on the inner wall of the mounting frame, the detection end is located below the light source end, and auxiliary rollers are provided on both sides of the detection end, the auxiliary rollers are used to assist the PO film to pass through so as to keep the PO film parallel to the light source end and the detection end.

[0015] Preferably: the winding mechanism includes a winding roller and two columns, the columns are located at both ends of the linkage roller, a driving motor is installed above the columns, a receiving slider is slidably connected inside the columns, the receiving slider is rotatably connected by a plug-in shaft, and the output end of the driving motor passes through a non-center part of the receiving slider.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention can improve the detection accuracy. Through the support rod design of the film roller mechanism, the PO film is supported to form a conical frame structure, so that the dust particles above the PO film naturally fall to both sides, avoiding dust interference with the accuracy of light transmission detection.

[0018] 2. The present invention can improve the cleaning efficiency. While the support rod forms a conical frame structure around the linkage roller, the airflow entering the middle transmission mechanism enters the side impact mechanism. The side impact mechanism uses high-pressure gas to push the counterweight ring to vibrate, thereby accelerating the shedding of dust on the surface of the PO film. At the same time, the vibration is transmitted to the linkage roller, further reducing the cleaning time.

[0019] 3. The present invention can keep the equipment clean. After the airflow discharged from the side impact mechanism enters the air box, the cleaning mechanism uses high-pressure gas and a brush to clean the dust on the surface of the linkage roller in real time, ensuring the cleanliness of the equipment itself and preventing dust from contaminating the PO film again. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional diagram of the present invention as a whole;

[0021] Figure 2 It is a structural schematic diagram of the detection mechanism of the present invention;

[0022] Figure 3 For the present invention Figure 1 The structural diagram of the middle part;

[0023] Figure 4 It is a structural schematic diagram of the roller film mechanism, the middle transmission mechanism and the side collision mechanism of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure inside the roller film mechanism of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the transmission mechanism and the side collision mechanism in the present invention;

[0026] Figure 7 It is a structural schematic diagram of the transmission mechanism in the present invention;

[0027] Figure 8 It is a structural schematic diagram of the side impact mechanism of the present invention;

[0028] Fig. 9 It is a schematic structural diagram of the cleaning mechanism of the present invention.

[0029] In the figure:

[0030] 1. Detection mechanism; 11. Installation frame; 12. Light source end; 13. Detection end; 14. Auxiliary roller;

[0031] 2. Winding mechanism; 21. Winding roller; 22. Column; 23. Driving motor; 24. Supporting slide block;

[0032] 3. Roller film mechanism; 31. Linkage roller; 32. Plug-in shaft; 33. Middle cavity; 34. Side cavity; 35. Rectangular groove; 36. Support rod; 37. Connecting rod;

[0033] 4. Middle transmission mechanism; 41. Middle cylinder box; 42. Intake pipe; 43. Piston block; 44. Transmission rod; 45. Connecting pipe; 46. Intake notch; 47. Exhaust notch;

[0034] 5. Side impact mechanism; 51. Side cylinder box; 52. Through hole; 53. Connecting notch; 54. Connecting notch; 55. Retaining ring; 56. End cover; 57. Elastic member; 58. Counterweight ring; 59. Sealing ring;

[0035] 6. Exhaust pipe;

[0036] 7. Cleaning mechanism; 71. Air box; 72. Connecting pipe; 73. Mesh; 74. Brush;

[0037] 8. High-pressure air pump. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Reference Figure 1-Figure 9 As shown, the present invention provides a light transmission detection device for agricultural PO film production, including a detection mechanism 1 for light transmission detection, a winding mechanism 2 is arranged on one side of the detection mechanism 1, a film rolling mechanism 3 is arranged on the other side of the detection mechanism 1, a cleaning mechanism 7 is arranged above the film rolling mechanism 3, a middle transmission mechanism 4, a side impact mechanism 5 and an exhaust pipe 6 are installed inside the film rolling mechanism 3, the side impact mechanism 5 is located at both ends of the middle transmission mechanism 4, and a high-pressure air pump 8 is arranged outside the detection mechanism 1;

[0040] The film roller mechanism 3 includes a linkage roller 31 and a support rod 36. The film roller mechanism 3 is used to convey the PO film in a linkage manner, and the support rod 36 is used to support both sides of the PO film.

[0041] The middle transmission mechanism 4 includes a middle cylinder box 41, an air intake pipe 42 and a transmission rod 44. The middle transmission mechanism 4 is used to drive the support rod 36 to unfold, and the middle cylinder box 41 is used to cooperate with the side impact mechanism 5;

[0042] The side impact mechanism 5 includes a side cylinder box 51 and a counterweight ring 58. The counterweight ring 58 is used to generate vibrations through impact to accelerate the falling of dust particles above the PO film.

[0043] The cleaning mechanism 7 includes an air box 71 and a brush 74 . The brush 74 is attached to the outer surfaces of the linkage roller 31 and the support rod 36 . The cleaning mechanism 7 is used to clean the linkage roller 31 itself.

[0044] Reference Figure 3-Figure 6 In a further embodiment, both ends of the linkage roller 31 are fixedly connected with a plug-in shaft 32, the air intake pipe 42 and the exhaust pipe 6 both pass through the plug-in shaft 32, and a left-right symmetrical rectangular groove 35 is opened on the periphery of the linkage roller 31, and one end of the support rod 36 is rotatably connected to the inner side of the rectangular groove 35.

[0045] In this embodiment, the exhaust pipe 6 passes through the plug-in shaft 32 at the left end of the linkage roller 31, and the air intake pipe 42 passes through the plug-in shaft 32 on the right end; the air intake pipe 42 and the exhaust pipe 6 are provided with a connector at one end outside the linkage roller 31, and the connector is a snap-on connector in the prior art, so that the connection and delivery of high-pressure gas are not affected when the linkage roller 31 rotates; the high-pressure air pump 8 is an air pump that can generate high-pressure gas in the prior art.

[0046] Reference Figure 1-Figure 9 In a further embodiment, a middle cavity 33 and a side cavity 34 are opened inside the linkage roller 31, and the side cavity 34 is located on both sides of the middle cavity 33. The middle cavity 33 and the side cavity 34 are interconnected, the middle cylinder box 41 is installed inside the middle cavity 33, and the side cylinder box 51 is located inside the side cavity 34.

[0047] In this embodiment, a connecting cavity is provided inside the linkage roller 31 at the end of the transmission rod 44 and the connecting rod 37 , and the cavity is connected to the support rod 36 , so as to facilitate the transmission of the connecting rod 37 when the transmission rod 44 moves.

[0048] Reference Figure 1-Figure 9 In a further embodiment, transmission rods 44 are provided at both ends of the middle cylinder box 41, one end of the transmission rod 44 located in the middle cylinder box 41 is fixedly connected to the piston block 43, and the other end of the transmission rod 44 is rotatably connected to the connecting rod 37, and the end of the connecting rod 37 away from the transmission rod 44 is rotatably connected to the support rod 36.

[0049] In this embodiment, the transmission rod 44 is slidably connected to the inside of the linkage roller 31, and a connecting ear plate is provided at the connection between the transmission rod 44 and the connecting rod 37 to facilitate transmission; the outer wall of the support rod 36 is provided with a section to avoid damage to the PO film when the support rod 36 is unfolded to support the PO film.

[0050] Reference Figure 1-Figure 9 In a further embodiment, connecting slots 53 and connecting slots 54 are provided at both ends of the side cylinder box 51, an air intake slot 46 is provided at the middle cylinder box 41, exhaust slots 47 are provided at both sides of the middle cylinder box 41, one end of the air intake pipe 42 is connected to the air intake slot 46, connecting pipes 45 are provided at both sides of the middle cylinder box 41, one end of the connecting pipe 45 is connected to the exhaust slot 47, the other end of the connecting pipe 45 is connected to the connecting slot 53, and the connecting slot 54 is used to connect the exhaust pipe 6.

[0051] In this embodiment, when the intake pipe 42 rushes high-pressure gas into the interior of the middle cylinder box 41, it can push the piston block 43 to move. When the piston block 43 moves to the exhaust groove 47, the gas will quickly pass through the exhaust groove 47, the connecting pipe 45 and the connecting groove 53 in sequence to enter the interior of the side cylinder box 51.

[0052] Reference Figure 1-Figure 9 In a further embodiment, an end cover 56 is installed at one end of the side cylinder box 51, a through hole 52 is opened inside the side cylinder box 51, and the through hole 52 is used for the transmission rod 44 to pass through. A retaining ring 55 is fixedly connected to the inner wall of the side cylinder box 51.

[0053] In this embodiment, after the gas enters the interior of the side cylinder box 51, the gas cannot push the counterweight ring 58 due to the certain weight of the counterweight ring 58, and can only be continuously compressed. At this time, the piston block 43 is also in a state of being continuously pushed.

[0054] Reference Figure 1-Figure 9 In a further embodiment, a sealing ring 59 is fixedly sleeved on the periphery of the counterweight ring 58 , and the sealing ring 59 fits the inner wall of the side cylinder box 51 . An elastic member 57 is provided on the side of the counterweight ring 58 away from the retaining ring 55 , and the elastic member 57 is fixedly connected to the end cover 56 .

[0055] In this embodiment, when the gas inside the side cylinder box 51 is compressed to the point where it can push the counterweight ring 58, the elastic member 57 will be compressed, and as the counterweight ring 58 continues to move, when the counterweight ring 58 moves to the connecting slot 54, the compressed gas will be suddenly released, thereby quickly pushing the counterweight ring 58 and hitting the retaining ring 55 under the rebound of the elastic member 57, thereby generating vibration; covers and end covers 56 are also installed at both ends of the middle cylinder box 41, which are similarly used to facilitate the installation and maintenance of the interior of the middle cylinder box 41 and the side cylinder box 51.

[0056] Reference Figure 1-Figure 9 In a further embodiment, a connecting pipe 72 is provided at one end of the air box 71, a mesh 73 is provided at the bottom of the air box 71, brushes 74 are evenly arranged below the air box 71, the top of the brush 74 is installed below the air box 71, and the connecting pipe 72 is connected to one end of the exhaust pipe 6 through a hose.

[0057] In this embodiment, the brush 74 has a certain toughness so that its bottom end can always fit the linkage roller 31 and the support rod 36; the opening of the mesh 73 can disperse the airflow entering the air box 71, so that it is blown to the inside of the brush 74. Therefore, during the rotation of the linkage roller 31, the linkage roller 31 itself can be cleaned by the blowing of the brush 74 and the air box 71.

[0058] Reference Figure 1-Figure 9 In a further embodiment, the detection mechanism 1 includes a mounting frame 11, a light source terminal 12 and a detection terminal 13. The light source terminal 12 is evenly arranged and installed on the inner wall of the mounting frame 11. The detection terminal 13 is located below the light source terminal 12. Auxiliary rollers 14 are arranged on both sides of the detection terminal 13. The auxiliary rollers 14 are used to assist the PO film to pass through so as to keep the PO film parallel to the light source terminal 12 and the detection terminal 13.

[0059] In this embodiment, the detection mechanism 1 is a thin film light transmittance detection device in the prior art, wherein the light source end 12 releases light, which is received by the detection end 13, so as to determine the amount of light transmitted through the thin film.

[0060] Reference Figure 1-Figure 9 In a further embodiment, the winding mechanism 2 includes a winding roller 21 and two columns 22, the columns 22 are located at both ends of the linkage roller 31, a driving motor 23 is installed above the columns 22, and a receiving slider 24 is slidably connected inside the column 22. The receiving slider 24 is rotatably connected by the plug-in shaft 32, and the output end of the driving motor 23 passes through the non-center of the receiving slider 24.

[0061] In this embodiment, the winding mechanism 2 is a prior art, which is the last winding part in the PO film production line process, and the column 22 is the tensioning part; there is a substrate under the column 22 for receiving the detection mechanism 1, the winding mechanism 2 and the film roller mechanism 3, etc., and a motor is installed on the outside of the substrate for driving the winding roller 21 to rotate, so as to wind up the produced PO film. Therefore, when the PO film is rolled up, the friction between the PO film and the linkage roller 31 will also cause the linkage roller 31 to rotate.

[0062] The working principle of the present invention is as follows:

[0063] When the winding roller 21 is winding the PO film produced by passing under the film roller mechanism 3 and over the auxiliary roller 14, the PO film will pass over the detection terminal 13 so as to detect its light transmittance;

[0064] When the winding roller 21 starts to wind up the PO film, the control device on the side of the mounting frame 11 will operate the high-pressure air pump 8 to inject high-pressure air into the air inlet pipe 42. This part of the air will enter the interior of the middle cylinder box 41, thereby pushing the two piston blocks 43 inside the middle cylinder box 41 to move, and then the piston block 43 moves to the two sides of the middle cylinder box 41 with the transmission rod 44, thereby causing the support rod 36 to rotate around the rectangular groove 35 where it is connected through the connecting rod 37, and unfolding so that the two ends of the linkage roller 31 form a conical frame, so that the support rod 36 supports the PO film passing through the periphery of the linkage roller 31, and the PO film located at the two ends of the linkage roller 31 tilts downward when the PO film passes through the periphery of the linkage roller 31, so that the dust particles located above the PO film during production will fall to both sides, thereby avoiding the accuracy of the detection when the PO film passes through the detection end 13 for light transmission detection;

[0065] When the piston block 43 drives the transmission rod 44 to move and exceeds the exhaust notch 47 of the connecting pipe 45, the airflow will enter the inside of the side cylinder box 51 through the connecting pipe 45, and accumulate therein until it pushes the counterweight ring 58 and compresses the elastic member 57. When the sealing ring 59 on the outer periphery of the counterweight ring 58 reaches the connecting notch 54, the compressed gas will suddenly be discharged through the exhaust pipe 6. At this time, the elastic member 57 rebounds quickly, causing the counterweight ring 58 to hit the retaining ring 55 to vibrate. The vibration will be transmitted to the entire linkage roller 31, so that the PO film passing through the outer periphery of the linkage roller 31 will also vibrate, thereby accelerating the dust to fall from both sides of the PO film, thereby reducing the time for cleaning the dust above the PO film, thereby improving the cleaning efficiency.

[0066] When the counterweight ring 58 hits the baffle ring 55, the compressed air flows into the exhaust pipe 6 through the connecting slot 54, is transported to the connecting pipe 72, and is dispersed in the air box 71. It is then sprayed out from the mesh 73 and the brush 74 always adheres to the surface of the linkage roller 31, thereby cleaning the dust on the surface of the linkage roller 31 during the process of transporting the PO film, thereby maintaining the cleanliness of the linkage roller 31, thereby avoiding contamination of the PO film during the transportation process and reducing the total amount of dust contaminated above the PO film.

[0067] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A light transmission detection device for agricultural PO film production, comprising a detection mechanism (1) for light transmission detection, characterized in that: A winding mechanism (2) is arranged on one side of the detection mechanism (1), a film roller mechanism (3) is arranged on the other side of the detection mechanism (1), a cleaning mechanism (7) is arranged above the film roller mechanism (3), a middle transmission mechanism (4), a side impact mechanism (5) and an exhaust pipe (6) are installed inside the film roller mechanism (3), the side impact mechanism (5) is located at both ends of the middle transmission mechanism (4), and a high-pressure air pump (8) is arranged outside the detection mechanism (1); The film roller mechanism (3) comprises a linkage roller (31) and a support rod (36), the film roller mechanism (3) is used for linkage conveying the PO film, and the support rod (36) is used for supporting two sides of the PO film; The middle transmission mechanism (4) comprises a middle cylinder box (41), an air intake pipe (42) and a transmission rod (44); the middle transmission mechanism (4) is used to drive the support rod (36) to unfold; the middle cylinder box (41) is used to cooperate with the side impact mechanism (5); The side impact mechanism (5) comprises a side cylinder box (51) and a counterweight ring (58), wherein the counterweight ring (58) is used to generate vibrations through impact to accelerate the falling of dust particles above the PO film; The cleaning mechanism (7) comprises an air box (71) and a brush (74), wherein the brush (74) is in contact with the outer surfaces of the linkage roller (31) and the support rod (36), and the cleaning mechanism (7) is used to clean the linkage roller (31) itself.

2. The light transmission detection equipment for agricultural PO film production according to claim 1, characterized in that: The two ends of the linkage roller (31) are fixedly connected to a plug-in shaft (32), the air intake pipe (42) and the exhaust pipe (6) both pass through the plug-in shaft (32), a left-right symmetrical rectangular groove (35) is provided on the periphery of the linkage roller (31), and one end of the support rod (36) is rotatably connected to the inner side of the rectangular groove (35).

3. The light transmission detection equipment for agricultural PO film production according to claim 1, characterized in that: The linkage roller (31) is provided with a middle cavity (33) and a side cavity (34) inside, the side cavity (34) is located on both sides of the middle cavity (33), the middle cavity (33) and the side cavity (34) are interconnected, the middle cylinder box (41) is installed inside the middle cavity (33), and the side cylinder box (51) is located inside the side cavity (34).

4. The light transmission detection equipment for agricultural PO film production according to claim 1, characterized in that: Transmission rods (44) are provided at both ends of the middle cylinder box (41); one end of the transmission rod (44) located in the middle cylinder box (41) is fixedly connected to the piston block (43); the other end of the transmission rod (44) is rotatably connected to a connecting rod (37); and one end of the connecting rod (37) away from the transmission rod (44) is rotatably connected to a support rod (36).

5. The light transmission detection equipment for agricultural PO film production according to claim 1, characterized in that: The two ends of both sides of the side cylinder box (51) are provided with connecting slots (53) and connecting slots (54), the middle cylinder box (41) is provided with an air intake slot (46), and the two sides of the middle cylinder box (41) are provided with exhaust slots (47), one end of the air intake pipe (42) is connected to the air intake slot (46), and connecting pipes (45) are provided on both sides of the middle cylinder box (41), one end of the connecting pipe (45) is connected to the exhaust slot (47), and the other end of the connecting pipe (45) is connected to the connecting slot (53), and the connecting slot (54) is used to connect to the exhaust pipe (6).

6. The light transmission detection equipment for agricultural PO film production according to claim 1, characterized in that: An end cover (56) is installed at one end of the side cylinder box (51), a through hole (52) is opened inside the side cylinder box (51), and the through hole (52) is used for the transmission rod (44) to pass through. A retaining ring (55) is fixedly connected to the inner wall of the side cylinder box (51).

7. The light transmission detection equipment for agricultural PO film production according to claim 1, characterized in that: A sealing ring (59) is fixedly sleeved on the periphery of the counterweight ring (58), and the sealing ring (59) fits the inner wall of the side cylinder box (51). An elastic member (57) is provided on the side of the counterweight ring (58) away from the retaining ring (55), and the elastic member (57) is fixedly connected to the end cover (56).

8. The light transmission detection equipment for agricultural PO film production according to claim 1, characterized in that: A connecting pipe (72) is provided at one end of the air box (71), a mesh hole (73) is provided at the bottom of the air box (71), the brushes (74) are evenly arranged and distributed below the air box (71), the top end of the brushes (74) is installed below the air box (71), and the connecting pipe (72) is connected to one end of the exhaust pipe (6) through a hose.

9. The light transmission detection equipment for agricultural PO film production according to claim 1, characterized in that: The detection mechanism (1) comprises a mounting frame (11), a light source end head (12) and a detection end head (13); the light source end heads (12) are evenly arranged and mounted on the inner side wall of the mounting frame (11); the detection end head (13) is located below the light source end head (12); auxiliary rollers (14) are arranged on both sides of the detection end head (13); the auxiliary rollers (14) are used to assist the PO film to pass through so as to keep the PO film parallel to the light source end head (12) and the detection end head (13).

10. The light transmission detection equipment for agricultural PO film production according to claim 1, characterized in that: The winding mechanism (2) comprises a winding roller (21) and two columns (22), wherein the columns (22) are located at both ends of a linkage roller (31), a driving motor (23) is installed above the columns (22), a receiving slider (24) is slidably connected inside the columns (22), the receiving slider (24) is rotatably connected through a plug-in shaft (32), and an output end of the driving motor (23) passes through a non-center portion of the receiving slider (24).

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