Multi-angle adjusting frame for cooling air ring of agricultural mulching film production

Abstract

The utility model provides an agricultural mulching film production cooling air ring multi -angle adjusting frame. The agricultural mulching film production cooling air ring multi -angle adjusting frame, including the mounting rod, the mounting rod sets up as two groups of left and right symmetry. The utility model discloses a connecting shaft is installed on the both sides of cooling air ring, and the connecting shaft is installed in the through hole and the mounting hole of the top of two groups of mounting plates, and the connecting shaft of left side is connected with two groups of connecting blocks and the pivot of lock pin and motor right side, and then can drive cooling air ring to rotate in a certain amplitude through motor, thereby the pitch angle of cooling air ring is adjusted according to the included angle of mulching film and ground, makes the central axis of cooling air ring and the wide side of mulching film always be in perpendicular state, that is, makes the mulching film always pass through cooling air ring vertically, and then makes the cool air of the inside air outlet hole of cooling air ring can evenly cover every place of mulching film, prevents the mulching film from producing the wrinkle because of uneven wind in the process of cooling.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural film production technology, and in particular relates to a multi-angle adjustable frame for cooling air rings in agricultural film production. Background Technology

[0002] Mulch film refers to an extremely thin (usually 0.008-0.015 mm thick) agricultural plastic film that is directly applied to the surface of farmland. Its main raw material is polyethylene (PE). The core function of mulch film is to create a better soil environment for crop growth through physical covering. This mainly includes increasing soil temperature (especially in early spring, it can raise the temperature of the topsoil by 2-4℃), retaining soil moisture, inhibiting weed growth, and preventing soil compaction and fertilizer loss. This significantly promotes seed germination and seedling growth, resulting in a general increase in crop yield of 30%-50%. With technological development, mulch film has evolved from a single colorless and transparent film to various functional types, such as black mulch film (strong weed suppression), silver-gray mulch film (aphid repellent), black and white bicolor film (cooling and weed control), and biodegradable mulch film, to meet the specific needs of different crops, seasons, and regions.

[0003] After production, agricultural mulch film needs to be cooled and shaped quickly, otherwise the yield rate will be affected. Currently, the cooling method used is mostly to use multiple fans to blow air to cool it down. However, the air blown by the fans cannot reach every part of the mulch film evenly, which will cause the mulch film to sway. After swaying, wrinkles will inevitably appear on the surface of the mulch film, resulting in uneven cooling of the wrinkled areas. After the mulch film is cooled, it needs to be rolled onto a roller. If the height of the roller is different from the height of the mulch film, the mulch film will form an angle with the ground, which will further affect the cooling effect of the fan on the mulch film. Therefore, it is necessary to provide a multi-angle adjustable cooling air ring for agricultural mulch film production to solve the above problems. Utility Model Content

[0004] The technical content of this utility model is to provide a multi-angle adjustable frame for the cooling air ring in agricultural film production.

[0005] To solve the above problems, this utility model provides a multi-angle adjustable frame for cooling air rings in agricultural mulch film production, including mounting rods. The mounting rods are arranged in two symmetrical sets, connected by three sets of connecting rods. A mounting plate is installed at the top center of each mounting rod, and support rods are installed on both sides of the mounting plate. Two sets of universal wheels are symmetrically installed at the bottom of each mounting rod. Two sets of screws are symmetrically installed on each mounting rod, with a limit plate connected to the bottom of each screw. Two sets of limit rods are symmetrically installed at the top of the limit plate. A fixing block is installed on the top of the plate, and two sets of locking blocks are symmetrically installed on the bottom of the fixing block. A cooling air ring is installed between the two sets of mounting plates. Four sets of connecting pipes are symmetrically installed on the cooling air ring. An air outlet is opened on the inner side of the cooling air ring. A connecting shaft is installed in the middle of both sides of the cooling air ring. A connecting block is installed on the left side of the left set of connecting shafts. A motor is installed on the top of the left set of mounting plates through a mounting base. A rotating shaft is set on the right side of the motor. A set of connecting blocks is installed on the right side of the rotating shaft. The two sets of connecting blocks are connected by a locking pin.

[0006] As a further solution of this utility model, the mounting rod and the connecting rod have the same specifications. The mounting rod and the connecting rod are fixedly connected. Two sets of mounting rods and three sets of connecting rods constitute the bottom structure of this device. The thickness of the mounting plate installed on the top of the mounting rod is the same as the width of the mounting rod. The mounting plate is fixedly installed on the top of the mounting rod. The support rod is set as an inclined structure. The support rod is fixedly installed between the mounting rod and the mounting plate, thereby making the mounting plate more stable on the top of the mounting rod.

[0007] As a further solution of this utility model, the universal wheels are symmetrically installed on both sides of the bottom of the mounting rod, the limiting plate is installed at the bottom of the mounting rod, the width of the limiting plate is the same as the width of the mounting rod, and two sets of limiting rods symmetrically installed on the top of the limiting plate are set in the through holes opened on the mounting rod. The bottom of the limiting rods is fixedly connected to the top two sides of the limiting plate, so that the limiting plate can be stably installed at the bottom of the mounting rod through the two sets of limiting rods.

[0008] As a further solution of this utility model, the screw is set in two sets of screw holes symmetrically opened on the mounting rod, the screw holes are adapted to the screw, the bottom of the screw is rotatably connected to the top center of the limiting plate, and the top of the screw is set as a T-shaped structure to facilitate rotation.

[0009] As a further solution of this utility model, the fixing block is configured as a semi-circular structure, the diameter of the fixing block is the same as the width of the mounting plate, and the top of the mounting plate is symmetrically provided with two sets of locking grooves that are adapted to the two sets of locking blocks at the bottom of the fixing block. The locking blocks are fixedly installed in the locking grooves by fixing bolts. The cooling air ring is configured as a ring structure, and the center of the cooling air ring is on the same plane as the top of the mounting plate. The two sets of connecting shafts installed on both sides of the cooling air ring are of the same specifications. The top of the mounting plate on the left side and the bottom of the fixing block are provided with through holes, the inner diameter of which is the same as the diameter of the connecting shaft. The top of the mounting plate on the right side and the bottom of the fixing block are provided with connecting holes, the depth of which is less than the thickness of the mounting plate and the fixing block, so as to facilitate the installation of the cooling air ring on the top of the two sets of mounting plates.

[0010] As a further solution of this utility model, the mounting base is fixedly installed on the upper left side of a set of mounting plates on the left side, the motor is fixedly installed on the top of the mounting base, the right side of the motor is flush with the left side of the mounting plate and the fixing block, the right side shaft of the motor is set in the through hole on the mounting plate and the fixing block, the diameter of the shaft is the same as the inner diameter of the through hole, the connecting block is set as a semi-circular structure, the diameter of the connecting block is the same as the connecting shaft and the rotating shaft, the left end of the connecting shaft and the right end of the rotating shaft are equipped with two sets of connecting blocks of the same specifications, the connecting block is provided with a locking hole, the inner diameter of the locking hole is the same as the diameter of the locking pin, the two sets of locking holes on the two sets of connecting blocks are connected, the two ends of the locking pin are flush with the outer side of the two sets of connecting blocks, thereby connecting the rotating shaft with the connecting shaft on the left side of the cooling air ring.

[0011] As a further solution of this utility model, four sets of mounting holes are symmetrically opened on the outer side of the cooling air ring. The inner diameter of the mounting holes is the same as the diameter of the connecting pipe. The connecting pipe is fixedly installed in them. The interior of the cooling air ring is set as a hollow structure. One end of the connecting pipe in the mounting hole is flush with the inner concave surface of the cooling air ring. Multiple sets of air outlet holes are evenly opened on the inner side of the cooling air ring to blow and cool the film passing through the cooling air ring.

[0012] Compared with related technologies, the multi-angle adjustable cooling air ring for agricultural mulch film production provided by this utility model has the following beneficial effects:

[0013] 1. This utility model installs connecting shafts on both sides of the cooling air ring. The connecting shafts are installed in the through holes and mounting holes opened on the top of the two sets of mounting plates. The connecting shaft on the left side is connected to the two sets of connecting blocks, locking pins, and the rotating shaft on the right side of the motor. The motor can then drive the cooling air ring to rotate within a certain range, thereby adjusting the pitch angle of the cooling air ring according to the angle between the ground film and the ground. This ensures that the central axis of the cooling air ring is always perpendicular to the wide side of the ground film, so that the ground film always passes perpendicularly through the cooling air ring. This allows the cold air from the air outlet on the inner side of the cooling air ring to evenly cover every part of the ground film, preventing wrinkles from forming on the ground film due to uneven wind force during the cooling process.

[0014] 2. This utility model symmetrically installs two sets of limiting plates at the bottom of the mounting rod. The top of the limiting plates is equipped with screws. By rotating the screws, the limiting plates can be driven to rise and fall. Thus, when the device needs to be used at a fixed point, the four sets of limiting plates at the bottom of the two sets of mounting rods are driven to fall so that their bottoms contact the ground, thereby restricting the movement of the device. Combined with the self-locking function of the casters, the device can be locked at a fixed point. Attached Figure Description

[0015] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a top-view three-dimensional structural diagram of a multi-angle adjustable cooling air ring for agricultural mulch film production according to this utility model;

[0017] Figure 2 This is a bottom-view three-dimensional structural diagram of a multi-angle adjustable cooling air ring for agricultural mulch film production according to this utility model;

[0018] Figure 3 This is a side view of the cooling air ring structure of a multi-angle adjustable frame for agricultural mulch film production according to the present invention.

[0019] Figure 4 This is a top view schematic diagram of the motor structure of a multi-angle adjustable cooling air ring for agricultural mulch film production according to this utility model;

[0020] Figure 5 This is an enlarged structural diagram of point A of a multi-angle adjustable cooling air ring for agricultural mulch film production according to this utility model;

[0021] Figure 6 This is an enlarged structural diagram of section B of the multi-angle adjustment frame for cooling air rings in agricultural mulch film production according to this utility model.

[0022] In the diagram: 1. Mounting rod; 2. Connecting rod; 3. Mounting plate; 4. Support rod; 5. Caster wheel; 6. Screw; 7. Limiting plate; 8. Limiting rod; 9. Fixing block; 10. Locking block; 11. Cooling air ring; 12. Connecting pipe; 13. Air outlet; 14. Connecting shaft; 15. Connecting block; 16. Mounting base; 17. Motor; 18. Rotating shaft; 19. Locking pin. Detailed Implementation

[0023] Please refer to the following: Figure 1-6 A multi-angle adjustable cooling fan ring for agricultural mulch film production includes mounting rods 1, which are arranged in two symmetrical sets. The two sets of mounting rods 1 are connected by three sets of connecting rods 2. A mounting plate 3 is installed at the top center of the mounting rods 1, and support rods 4 are installed on both sides of the mounting plate 3. Two sets of universal wheels 5 are symmetrically installed at the bottom of the mounting rods 1. Two sets of screws 6 are symmetrically installed on the mounting rods 1, and a limit plate 7 is connected to the bottom of the screws 6. Two sets of limit rods 8 are symmetrically installed at the top of the limit plate 7. A fixing block 9 is installed at the top of the mounting plate 3, and the bottom of the fixing block 9 is symmetrically... Two sets of locking blocks 10 are installed, and a cooling air ring 11 is installed between the two sets of mounting plates 3. Four sets of connecting pipes 12 are symmetrically installed on the cooling air ring 11. An air outlet 13 is opened on the inner side of the cooling air ring 11. A connecting shaft 14 is installed in the middle of both sides of the cooling air ring 11. A connecting block 15 is installed on the left side of the left set of connecting shafts 14. A motor 17 is installed on the top of the left set of mounting plates 3 through a mounting base 16. A rotating shaft 18 is set on the right side of the motor 17. A set of connecting blocks 15 is installed on the right side of the rotating shaft 18. The two sets of connecting blocks 15 are connected by a locking pin 19.

[0024] Preferably, the mounting rod 1 and the connecting rod 2 have the same specifications. The mounting rod 1 and the connecting rod 2 are fixedly connected. The two sets of mounting rods 1 and the three sets of connecting rods 2 constitute the bottom structure of this device. The thickness of the mounting plate 3 installed on the top of the mounting rod 1 is the same as the width of the mounting rod 1. The mounting plate 3 is fixedly installed on the top of the mounting rod 1. The support rod 4 is set as an inclined structure. The support rod 4 is fixedly installed between the mounting rod 1 and the mounting plate 3, thereby making the mounting plate 3 more stable on the top of the mounting rod 1.

[0025] Preferably, the casters 5 are symmetrically installed on both sides of the bottom of the mounting rod 1. The four sets of casters 5 on the bottom of the two sets of mounting rods 1 enable the device to have good mobility. The limiting plate 7 is installed at the bottom of the mounting rod 1. The width of the limiting plate 7 is the same as the width of the mounting rod 1. Two sets of limiting rods 8 are symmetrically installed on the top of the limiting plate 7 and are set in the through holes opened on the mounting rod 1. The bottom of the limiting rods 8 is fixedly connected to the top two sides of the limiting plate 7. Thus, the limiting plate 7 can be stably installed at the bottom of the mounting rod 1 through the two sets of limiting rods 8.

[0026] Preferably, the screw 6 is set in two sets of screw holes symmetrically opened on the mounting rod 1. The screw holes are adapted to the screw 6. The bottom of the screw 6 is rotatably connected to the top center of the limiting plate 7. The top of the screw 6 is set with a T-shaped structure to facilitate rotation. By rotating the screw 6, the screw 6 can move along the screw holes on the mounting rod 1, thereby driving the limiting plate 7 to move up and down. The limiting rod 8 moves synchronously along the through hole on the mounting rod 1. When the device needs to be used at a fixed point, by rotating the four sets of screws 6, the bottom of the four sets of limiting plates 7 can be made to contact the ground, which can greatly reduce the mobility of the device. With the self-locking function of the universal wheel 5, the device can be locked at a fixed point.

[0027] Preferably, the fixing block 9 is configured as a semi-circular structure, and the diameter of the fixing block 9 is the same as the width of the mounting plate 3. The top of the mounting plate 3 is symmetrically provided with two sets of locking grooves that are adapted to the two sets of locking blocks 10 at the bottom of the fixing block 9. The locking blocks 10 are fixedly installed in the locking grooves by fixing bolts, thereby realizing the fixed installation of the fixing block 9 on the top of the mounting plate 3. The cooling air ring 11 is configured as a ring structure, and the center of the cooling air ring 11 is on the same plane as the top of the mounting plate 3. The two sets of connecting shafts 14 installed on both sides of the cooling air ring 11 have the same specifications. The top of the mounting plate 3 on the left side and the bottom of the fixing block 9 are provided with through holes, and the inner diameter of the through holes is the same as the diameter of the connecting shaft 14. The top of the mounting plate 3 on the right side and the bottom of the fixing block 9 are provided with connecting holes, and the depth of the connecting holes is less than the thickness of the mounting plate 3 and the fixing block 9. By vertically installing the two sets of connecting shafts 14 to the top of the two sets of mounting plates 3, the cooling air ring 11 can be mounted on the top of the two sets of mounting plates 3.

[0028] Preferably, the mounting base 16 is fixedly installed on the upper left side of the left-side mounting plate 3, and the motor 17 is fixedly installed on the top of the mounting base 16. The right side of the motor 17 is flush with the left side of the mounting plate 3 and the fixing block 9. The right side shaft 18 of the motor 17 is set in the through hole on the mounting plate 3 and the fixing block 9. The diameter of the shaft 18 is the same as the inner diameter of the through hole. The connecting block 15 is set as a semi-circular structure. The diameter of the connecting block 15 is the same as that of the connecting shaft 14 and the shaft 18. The left end of the connecting shaft 14 is installed with the right end of the shaft 18. The two sets of connecting blocks 15 are identical in size. Each connecting block 15 has a locking hole with an inner diameter identical to that of the locking pin 19. After the cooling air ring 11 is installed between the two mounting plates 3, the two sets of locking holes on the connecting blocks 15 are connected. The locking pin 19 is then inserted into these holes to lock the two sets of connecting blocks 15 together. Both ends of the locking pin 19 are flush with the outer sides of the two sets of connecting blocks 15, thus connecting the rotating shaft 18 to the connecting shaft 14 on the left side of the cooling air ring 11. Then, the fixing block 9 is installed... Once installed on top of mounting plate 3, the cooling air ring 11 is locked between the two sets of mounting plates 3. Motor 17 drives the rotating shaft 18 to rotate, which in turn drives the left-side connecting shaft 14 to rotate via two sets of connecting blocks 15 and locking pins 19. This, in turn, causes the cooling air ring 11 to rotate, allowing for angle adjustment to accommodate different film movement angles in mulch film production lines. The cooling air ring 11 does not rotate 360 ​​degrees; generally, it only rotates within a 90-degree range to the left and right. If necessary, when the cooling air ring 11 needs to be removed, first use the motor 17 to drive the cooling air ring 11 to rotate to a vertical position, so that the locking pin 19 is in a vertical position. Then remove the two sets of fixing blocks 9 from the top of the two sets of mounting plates 3, and the cooling air ring 11 can be removed upwards. At this time, the left connecting block 15 of the left set of connecting shafts 14 and the right connecting block 15 of the rotating shaft 18 are vertically separated. Then remove the locking pin 19 for storage, so that the cooling air ring 11 can be installed on the top of the two sets of mounting plates 3 next time.

[0029] Preferably, four sets of mounting holes are symmetrically opened on the outer side of the cooling air ring 11. The inner diameter of the mounting holes is the same as the diameter of the connecting pipe 12. The connecting pipe 12 is fixedly installed in them. The interior of the cooling air ring 11 is set as a hollow structure. One end of the connecting pipe 12 in the mounting hole is flush with the inner concave surface of the cooling air ring 11. The connecting pipe 12 can be used to connect the air supply pipe. The four sets of connecting pipes 12 can connect the four sets of air supply pipes to the cooling air ring 11, thereby delivering cold air into the interior of the cooling air ring 11. Multiple sets of air outlet holes 13 are evenly opened on the inner side of the cooling air ring 11, so that cold air can enter the inner side of the cooling air ring 11 through the air outlet holes 13, thereby blowing and cooling the film passing through the cooling air ring 11.

[0030] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. The technical details of the device's power mechanism, power supply system, and control system are not fully described. However, those skilled in the art, understanding the principle of the above utility model, can clearly understand the specifics of its power mechanism, power supply system, and control system. The control method in the application document is automatic control via a controller. The controller's control circuit can be implemented through simple programming by those skilled in the art. Those skilled in the art can connect all electrical components and their compatible power supplies via wires, and should select a suitable controller according to the actual situation to meet control requirements. The specific connections and control sequence, and the detailed connection methods, are well-known technologies in the field. This document mainly introduces the working principle and process, and will not describe the electrical control.

[0031] All standard parts used can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The fixing bolt of this device is a bolt, and the fixing hole is a screw hole. The machinery, parts and equipment all adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made to these embodiments, or they can be used directly or indirectly, without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the appended claims and their equivalents, and they are similarly included within the patent protection scope of the present invention.

Claims

1. A multi-angle adjustable frame for cooling air rings in agricultural mulch film production, comprising mounting rods (1), wherein the mounting rods (1) are arranged in two sets symmetrically on the left and right, characterized in that: Two sets of mounting rods (1) are connected by three sets of connecting rods (2). A mounting plate (3) is installed at the top center of the mounting rod (1). Support rods (4) are installed on both sides of the mounting plate (3). Two sets of universal wheels (5) are symmetrically installed at the bottom of the mounting rod (1). Two sets of screws (6) are symmetrically installed on the mounting rod (1). A limit plate (7) is connected to the bottom of the screw (6). Two sets of limit rods (8) are symmetrically installed at the top of the limit plate (7). A fixing block (9) is installed at the top of the mounting plate (3). Two sets of locking blocks (10) are symmetrically installed at the bottom of the fixing block (9). The two sets of mounting plates (3) A cooling air ring (11) is installed between the cooling air rings (11), and four sets of connecting pipes (12) are symmetrically installed on the cooling air ring (11). An air outlet (13) is opened on the inner side of the cooling air ring (11). A connecting shaft (14) is installed in the middle of both sides of the cooling air ring (11). A connecting block (15) is installed on the left side of the connecting shaft (14) on the left side. A motor (17) is installed on the top of the mounting plate (3) on the left side through a mounting seat (16). A rotating shaft (18) is provided on the right side of the motor (17). A set of connecting blocks (15) is installed on the right side of the rotating shaft (18). The two sets of connecting blocks (15) are connected by a locking pin (19).

2. The multi-angle adjustable frame for cooling air rings in agricultural film production according to claim 1, characterized in that: The mounting rod (1) and the connecting rod (2) are of the same specifications. The mounting rod (1) and the connecting rod (2) are fixedly connected. The two sets of mounting rods (1) and the three sets of connecting rods (2) constitute the bottom structure of this device. The thickness of the mounting plate (3) installed on the top of the mounting rod (1) is the same as the width of the mounting rod (1). The mounting plate (3) is fixedly installed on the top of the mounting rod (1). The support rod (4) is set as an oblique structure. The support rod (4) is fixedly installed between the mounting rod (1) and the mounting plate (3).

3. The multi-angle adjustable frame for cooling air rings in agricultural film production according to claim 1, characterized in that: The universal wheels (5) are symmetrically installed on both sides of the bottom of the mounting rod (1). The limiting plate (7) is installed at the bottom of the mounting rod (1). The width of the limiting plate (7) is the same as the width of the mounting rod (1). Two sets of limiting rods (8) symmetrically installed on the top of the limiting plate (7) are set in the through holes opened on the mounting rod (1). The bottom of the limiting rods (8) is fixedly connected to the top two sides of the limiting plate (7).

4. The multi-angle adjustable frame for cooling air rings in agricultural film production according to claim 1, characterized in that: The screw (6) is set in two sets of screw holes symmetrically opened on the mounting rod (1). The screw holes are adapted to the screw (6). The bottom of the screw (6) is rotatably connected to the top center of the limiting plate (7). The top of the screw (6) is set as a T-shaped structure.

5. The multi-angle adjustable frame for cooling air rings in agricultural film production according to claim 1, characterized in that: The fixing block (9) is set as a semi-circular structure. The diameter of the fixing block (9) is the same as the width of the mounting plate (3). The top of the mounting plate (3) is symmetrically provided with two sets of locking grooves that are adapted to the two sets of locking blocks (10) at the bottom of the fixing block (9). The locking blocks (10) are fixedly installed in the locking grooves by fixing bolts. The cooling air ring (11) is set as a ring structure. The center of the cooling air ring (11) is on the same plane as the top of the mounting plate (3). The two sets of connecting shafts (14) installed on both sides of the cooling air ring (11) have the same specifications. The top of the mounting plate (3) on the left side and the bottom of the fixing block (9) are provided with through holes. The inner diameter of the through holes is the same as the diameter of the connecting shafts (14). The top of the mounting plate (3) on the right side and the bottom of the fixing block (9) are provided with connecting holes. The depth of the connecting holes is less than the thickness of the mounting plate (3) and the fixing block (9).

6. The multi-angle adjustable frame for cooling air rings in agricultural film production according to claim 1, characterized in that: The mounting base (16) is fixedly installed on the upper left side of a set of mounting plates (3) on the left side. The motor (17) is fixedly installed on the top of the mounting base (16). The right side of the motor (17) is flush with the left side of the mounting plate (3) and the fixing block (9). The right side shaft (18) of the motor (17) is set in the through hole on the mounting plate (3) and the fixing block (9). The diameter of the shaft (18) is the same as the inner diameter of the through hole. The connecting block (15) is set... It has a semi-circular structure. The diameter of the connecting block (15) is the same as that of the connecting shaft (14) and the rotating shaft (18). The two sets of connecting blocks (15) installed on the left end of the connecting shaft (14) and the right end of the rotating shaft (18) are of the same specifications. The connecting block (15) is provided with a locking hole. The inner diameter of the locking hole is the same as that of the locking pin (19). The two sets of locking holes on the two sets of connecting blocks (15) are connected. The two ends of the locking pin (19) are flush with the outer sides of the two sets of connecting blocks (15).

7. The multi-angle adjustable frame for cooling air rings in agricultural film production according to claim 1, characterized in that: The cooling air ring (11) has four sets of mounting holes symmetrically opened on its outer side. The inner diameter of the mounting holes is the same as the diameter of the connecting pipe (12). The connecting pipe (12) is fixedly installed in it. The interior of the cooling air ring (11) is set as a hollow structure. One end of the connecting pipe (12) in the mounting hole is flush with the inner concave surface of the cooling air ring (11). Multiple sets of air outlet holes (13) are evenly opened on the inner side of the cooling air ring (11).

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