A cooling air knife

Abstract

The invention discloses a cooling air knife, comprising an air knife assembly; the air knife assembly comprises a pipeline, one end of the pipeline is connected to and provided with an air inlet, the end of the air inlet away from the pipeline is equipped with a fan assembly, the end of the pipeline away from the second mounting plate is provided with a knife head, the knife head is provided with an air outlet connected with the pipeline, and the bottom of the air outlet is provided with a cleaning assembly. When in use, the fan assembly is started to transport gas into the pipeline through a sealing tube and the air inlet, and then the gas is output through the air outlet to form a wind knife, and the position of the knife head is adjusted to achieve the air outlet facing the die head discharge port. The compressed air flow generated by the wind knife can effectively promote the air flow on the wind knife side of the diaphragm after leaving the air outlet, take away the heat on the diaphragm, and promote the cooling of the diaphragm, and the wind knife can effectively blow the molten diaphragm to the roller to make it adhere to the roller surface, and the pressure brought by the wind knife can also discharge the gas between the diaphragm and the roller, reduce the generation of bubbles, and improve product quality.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery diaphragm production, in particular to a cooling air knife. Background Art

[0002] In the wet film drawing production line for lithium battery separators, the casting process mainly performs preliminary cooling and shaping of the molten raw materials, and leads the preliminary shaped film sheets out to the next process.

[0003] In the prior art, after the two steps of feeding and extrusion, the raw materials are fully mixed and stirred, heated to a molten state, and then passed through an extrusion die. Under the influence of gravity, they are naturally attached to the casting roller in the form of a film, and then the film is cooled and formed by exchanging heat with the circulating water in the roller. However, in actual use, the cooling speed of the film through the circulating water is slow, and the film in the molten state is only attached to the roller under the action of gravity, which easily causes uneven film attachment and bubbles, resulting in the final appearance of lines or breaks in the product, affecting product quality and output.

[0004] Therefore, it is necessary to provide a cooling air knife to solve the above technical problems. Summary of the invention

[0005] The object of the present invention is to provide a cooling air knife to solve the problem raised in the above background technology that the cooling speed of the diaphragm through circulating water is slow, and the diaphragm in a molten state is attached to the roller only under the action of gravity, which easily causes uneven adhesion of the diaphragm and easily generates bubbles, resulting in the final appearance of lines or breakage in the product, affecting product quality and output.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cooling air knife, comprising an air knife assembly; the air knife assembly comprises a pipeline, second mounting plates are assembled at both ends of the pipeline, a first mounting plate is assembled at one end of the second mounting plate away from the pipeline, the bottom end of the first mounting plate is assembled and connected to both ends of the casting roller, an air inlet is connected to one end of the pipeline, a fan assembly is assembled at one end of the air inlet away from the pipeline, a cutter head is arranged at one end of the pipeline away from the second mounting plate, an air outlet connected to the pipeline is arranged on the cutter head, and a cleaning assembly is arranged at the bottom of the air outlet.

[0007] As a further solution of the present invention: the cleaning assembly includes a fixed block; the fixed block is assembled and arranged at the bottom of the air outlet, support plates are arranged on both sides of one end of the fixed block close to the air outlet, a square plate is slidably arranged between the support plates, a collecting box is fixedly arranged at one end of the square plate away from the fixed block, a movable block is slidably arranged in the collecting box, and a cleaning block is elastically arranged in the movable block.

[0008] As a further solution of the present invention: a slide groove is arranged on the support plate, a rotating shaft slidably connected to the slide groove is arranged on the side wall of the square plate, two groups of rotating shafts are arranged on the side wall of the square plate, and a groove slidably adapted to the rotating shaft is arranged on the side wall of the support plate at one end away from the fixed block, the groove is connected to the top of the end of the slide groove away from the fixed block, and a notch is arranged at the end of the slide groove away from the fixed block.

[0009] As a further solution of the present invention: a round rod is fixedly provided at one end of the movable block close to the square plate, a vertical plate is slidably provided at one end of the round rod away from the movable block, the end of the round rod away from the movable block slides through the square plate, the vertical plate is slidably provided at the end of the fixed block close to the square plate, a connecting plate is fixedly provided at one end of the vertical plate away from the round rod, an arc plate is fixedly provided at one end of the connecting plate away from the vertical plate, and the arc plate is slidably fitted with the periphery of the pipe.

[0010] As a further solution of the present invention: a first airbag is arranged in the end of the arc plate away from the connecting plate, a trigger plate is fixedly arranged at the end of the first airbag away from the connecting plate, the trigger plate is slidably fitted with the inner wall of the arc plate, and the inner wall of the arc plate is provided with an air supply channel connected to the end of the first airbag away from the trigger plate.

[0011] As a further solution of the present invention: a pushing block is slidably connected in the slide groove, a pushing block is slidably connected in the slide groove, a bellows is fixedly provided at one end of the pushing block close to the fixed block, an end of the bellows away from the pushing block is fixedly connected to the support plate, an end of the bellows away from the pushing block passes through the support plate and the side wall of the fixed block and is fixedly connected to a second air pipe, an end of the second air pipe away from the bellows passes through the side wall of the connecting plate and is connected to the air supply duct, a circular groove is provided on the top of the pushing block, a telescopic tube is fixedly provided in the circular groove, a top plate is fixedly provided on the top of the telescopic tube, an airway is provided in the pushing block, and the bottom of the circular groove and the end of the bellows are connected via the airway.

[0012] As a further solution of the present invention: the cleaning block is provided with a hollow structure, and through holes are provided on both sides of the cleaning block relative to the groove, and an opening communicating with the movable block is provided at the bottom of the cleaning block near the movable block.

[0013] As a further solution of the present invention: a first pull rope is fixedly provided at one end of the bottom of the cleaning block close to the fixed block, a positioning rod is rotatably provided at the top of the inner wall of the movable block, the end of the first pull rope away from the cleaning block bypasses the positioning rod and is fixedly provided with a wire roller, and the wire roller is rotatably connected to the inner wall of the movable block.

[0014] As a further solution of the present invention: a second pull rope is wound on the wire roller, and the end of the second pull rope away from the wire roller is fixedly connected to a sleeve, the sleeve is slidably sleeved on the periphery of a group of rotating shafts, and one end of the sleeve is rotatably connected to a push plate, and the bottom of the push plate is fixedly connected to the top of the round rod.

[0015] As a further solution of the present invention: a second airbag is arranged in the fixed block, one end of the second airbag is fixedly connected to the inner wall of the fixed block, the other end of the second airbag is fixedly connected to the connecting plate, a movable groove is arranged at one end of the connecting plate close to the vertical plate, a first air pipe connected to the second airbag is arranged in the movable groove, the round rod is a hollow structure, and the round rod is connected to the movable block, and the end of the round rod away from the movable block is fixedly connected to the first air pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: through the coordinated use of the pipeline, the first mounting plate, the second mounting plate, the air inlet and the tuyere, the fan assembly is started to transport gas into the pipeline through the sealing tube and the air inlet, and then the gas is output through the tuyere to form a wind knife, and by adjusting the position of the knife head, the tuyere is directly opposite to the die discharge port, and the compressed air flow generated by the wind knife can effectively promote the air flow on the wind knife side of the diaphragm after leaving the tuyere, take away the heat on the diaphragm, and promote the cooling of the diaphragm, and the wind knife can effectively blow the molten diaphragm toward the roller to make it adhere to the roller surface, and the pressure brought by the wind knife can also discharge the gas between the diaphragm and the roller, reduce the generation of bubbles, and improve product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the casting roller, die head and air knife assembly of the present invention.

[0018] Figure 2 It is a schematic diagram of the front three-dimensional structure of the present invention.

[0019] Figure 3 It is a structural schematic diagram of the middle section of the present invention.

[0020] Figure 4 It is a schematic diagram of the structure of the cleaning component in the present invention.

[0021] Figure 5 It is a schematic structural diagram of a cross-section of the middle portion of the cleaning component of the present invention.

[0022] Figure 6 It is a structural schematic diagram of a cross-section of the middle portion of the movable block in the present invention.

[0023] Figure 7 It is a schematic diagram of the structure of the curved plate in the present invention.

[0024] Figure 8 For the present invention Figure 4Schematic diagram of the structure at A in the middle.

[0025] Fig. 9 For the present invention Figure 5 Schematic diagram of the structure at B in the figure.

[0026] Fig.10 It is a structural schematic diagram of the rotating shaft in the present invention.

[0027] Fig.11 It is a schematic diagram of the structure of the push plate and the telescopic tube in the present invention.

[0028] In the figure: 1, casting roller; 2, die head; 3, air knife assembly; 31, pipeline; 32, first mounting plate; 33, second mounting plate; 34, air inlet; 35, air outlet; 4, cleaning assembly; 41, fixed block; 42, square plate; 43, collecting box; 44, movable block; 45, slide groove; 5, arc plate; 51, first air bag; 52, trigger plate; 53, air delivery channel; 6, connecting plate; 61, movable groove; 62, first air pipe; 7, second air pipe; 8, rotating shaft; 81, second tooth groove; 9, vertical plate; 10, bellows; 11, push block; 12, second air bag; 13, round rod; 14, cleaning block; 15, wire roller; 16, first pull rope; 17, second pull rope; 18, first tooth groove; 19, slider; 20, sleeve; 21, push plate; 22, telescopic tube; 23, top plate. DETAILED DESCRIPTION

[0029] See also Figure 1-Figure 11 In an embodiment of the present invention, a cooling air knife includes an air knife assembly 3. Preferably, the air knife assembly 3 is assembled and arranged on a casting roller 1. A die head 2 is arranged above the casting roller 1. The die head 2 is arranged obliquely above the air knife assembly 3. When in use, when the raw materials are fully mixed and stirred and heated to a molten state, they are extruded toward the casting roller 1 through the die head 2, and then naturally adhere to the casting roller 1 in the form of a diaphragm under the influence of gravity. Then, air is blown toward the diaphragm through the air knife assembly 3 to accelerate the cooling of the diaphragm, thereby avoiding the diaphragm not being cooled and shaped in time, which is prone to uneven adhesion and bubbles, resulting in the final appearance of texture or fracture in the product.

[0030] See also Figure 1-Figure 4Preferably, the wind knife assembly 3 includes a pipeline 31, and second mounting plates 33 are assembled at both ends of the pipeline 31, and a first mounting plate 32 is assembled at one end of the second mounting plate 33 away from the pipeline 31, and the bottom end of the first mounting plate 32 is assembled and connected to the two ends of the casting roller 1, and an air inlet 34 is connected to one end of the pipeline 31, and a fan assembly is assembled at one end of the air inlet 34 away from the pipeline 31, and a cutter head is arranged at one end of the pipeline 31 away from the second mounting plate 33, and an air outlet 35 is arranged on the cutter head, and the air outlet 35 is connected to the pipeline 31. It should be noted that: a cylinder is arranged on the side of the first mounting plate 32 away from the second mounting plate 33, and a screw rod for adjusting the angle between the second mounting plate 33 and the wind knife assembly 3 is arranged between the second mounting plate 33 and the first mounting plate 32, and the air outlet is adjusted by the cooperation of the cylinder and the screw rod. The adjustment of the position of 35 is simple and practical, and the fan assembly is arranged on the die head 2 placement platform, away from the high temperature area, which effectively protects the operation of the fan assembly, and the fan assembly is connected to the wind knife assembly 3 through the sealing tube. In this way, when in use, the fan assembly is started to transport gas to the pipeline 31 through the sealing tube and the air inlet 34, and then the gas is output through the air port 35 to form a wind knife. When in use, by adjusting the position of the knife head, the air port 35 is directly opposite to the discharge port of the die head 2. The compressed air flow generated by the wind knife can effectively promote the air flow on the wind knife side of the diaphragm after the air flow leaves the air port 35, take away the heat on the diaphragm, and promote the cooling of the diaphragm. In addition, the wind knife can effectively blow the molten diaphragm to the roller to make it adhere to the roller surface. The pressure brought by the wind knife can also discharge the gas between the diaphragm and the roller, reduce the generation of bubbles, and improve product quality.

[0031] After the wind knife assembly 3 has been running for a long time, dust and the like are easily accumulated in the air outlet 35, and the accumulated dust will affect the uniformity and strength of the airflow. Preferably, a cleaning assembly 4 is provided at the bottom of the air outlet 35. When dust and other impurities accumulate in the air outlet 35, the air outlet 35 can be cleaned by the cleaning assembly 4, thereby eliminating the need to disassemble the knife head for separate cleaning work, saving time and improving efficiency.

[0032] See also Figure 3-Figure 11Preferably, the cleaning assembly 4 includes a fixed block 41; the fixed block 41 is assembled and arranged at the bottom of the air outlet 35, and support plates are arranged on both sides of one end of the fixed block 41 close to the air outlet 35, and a square plate 42 is slidably arranged between the support plates, and a collecting box 43 is fixedly arranged at one end of the square plate 42 away from the fixed block 41, and a movable block 44 is slidably arranged in the collecting box 43, and a cleaning block 14 is elastically arranged in the movable block 44 through a spring; the square plate 42 is arranged parallel to the support plate, and the collecting box 43 is arranged on the square plate 42 at an angle upward, that is, the end of the collecting box 43 away from the fixed block 41 is higher than the end of the collecting box 43 close to the fixed block 41, and the fixed block 41, the square plate 42 are all hollow settings, and the side of the collecting box 43 close to the square plate 42 is connected to the square plate 42. When the collecting box 43 is between the supporting plates, the top of the collecting box 43 is higher than the bottom of the cutter head, thereby not hindering the collection box 43 from moving toward the cutter head. When the square plate 42 moves toward the air outlet 35, the inclination angles of the ends of the collecting box 43 and the cutter head are relatively vertical, thereby facilitating the cleaning block 14 to extend into the air outlet 35 to clean the air outlet 35, and a spring is provided between the square plate 42 and the fixing block 41 for automatically resetting the square plate 42 after it moves, so that when the square plate 42 moves toward the air outlet 35, it can automatically reset when there is no force.

[0033] Further, preferably, a slide groove 45 is provided on the support plate, and a rotating shaft 8 slidably connected to the slide groove 45 is provided on the side wall of the square plate 42. Two groups of rotating shafts 8 are provided on the side wall of the square plate 42. The side wall of the end of the support plate away from the fixed block 41 is provided with two groups of grooves corresponding to and slidably adapted to the rotating shaft 8. The grooves are communicated with the top of the end of the slide groove 45 away from the fixed block 41, and the end of the slide groove 45 away from the fixed block 41 is provided with a notch extending in the direction away from the fixed block 41, and the height of the notch is half of the slide groove 45. In this way, when the rotating shaft 8 slides to the corresponding groove, since the height of the notch is half of the slide groove 45, The rotating shaft 8 will not move into the notch; during use, when the air outlet 35 needs to be cleaned, the square plate 42 moves in the direction away from the fixed block 41 with the cooperation of the rotating shaft 8 and the slide groove 45. When the rotating shaft 8 moves to correspond to the groove, the collecting box 43 is below the end of the cutter head, and the cleaning block 14 corresponds to the air outlet 35. Then the square plate 42 moves upward again, that is, the rotating shaft 8 moves into the groove, so that the collecting box 43 moves upward to cover the end of the cutter head, and the cleaning block 14 extends into the air outlet 35. Then the sliding movable block 44 makes the cleaning block 14 slide in the air outlet 35 to complete the cleaning of the air outlet 35.

[0034] Furthermore, preferably, a round rod 13 is fixedly provided at one end of the movable block 44 close to the square plate 42, a vertical plate 9 is slidably provided at one end of the round rod 13 away from the movable block 44, the end of the round rod 13 away from the movable block 44 slides through the square plate 42, the vertical plate 9 is slidably provided at the end of the fixed block 41 close to the square plate 42, a connecting plate 6 is fixedly provided at one end of the vertical plate 9 away from the round rod 13, an arc plate 5 is fixedly provided at one end of the connecting plate 6 away from the vertical plate 9, and the arc plate 5 is slidably fitted with the periphery of the pipe 31; the round rod 13 can slide in the vertical direction on the vertical plate 9, and when the square plate 42 moves upward , avoiding the problem that the round rod 13 cannot move and the square plate 42 cannot move upward. When in use, when the square plate 42 moves in the direction away from the fixed block 41 and then moves upward to make the collection box 43 cooperate with the end of the cutter head, and the round rod 13 moves relatively upward on the vertical plate 9. At this time, the cleaning block 14 extends out of the air outlet 35, and then the arc plate 5 can be relatively slid. The movement of the arc plate 5 drives the vertical plate 9 to move through the connecting plate 6. The movement of the vertical plate 9 drives the round rod 13 to move. The movement of the round rod 13 drives the movable block 44 to move, so that the cleaning block 14 cleans the air outlet 35 in the horizontal direction.

[0035] See also Figure 2-Figure 4 , Figure 7 Preferably, a first airbag 51 is provided in the end of the arc plate 5 away from the connecting plate 6, and a trigger plate 52 is fixedly provided at the end of the first airbag 51 away from the connecting plate 6. The trigger plate 52 is slidably fitted with the inner wall of the arc plate 5, and the inner wall of the arc plate 5 is provided with an air delivery channel 53 connected with the end of the first airbag 51 away from the trigger plate 52. When in use, the end of the first airbag 51 away from the trigger plate 52 is fixedly connected to the inner wall of the arc plate 5, and the first airbag 51 is an elastically retractable structure, that is, when the trigger plate 52 slides downward at the end of the arc plate 5, the trigger plate 52 will squeeze the first airbag 51 so that the gas in the first airbag 51 is transported to the air delivery channel 53. When the trigger plate 52 is no longer subjected to force, the first airbag 51 automatically resets elastically, thereby causing the trigger plate 52 to move and reset to the top position of the arc plate 5.

[0036] See also Figure 4-Figure 5 , Figure 8-Figure 11Preferably, a push block 11 is slidably connected in the slide groove 45, and a bellows 10 is fixedly arranged at one end of the push block 11 close to the fixed block 41, and an end of the bellows 10 away from the push block 11 is fixedly connected to the support plate, and an end of the bellows 10 away from the push block 11 passes through the support plate and the side wall of the fixed block 41 and is fixedly connected to the second air pipe 7, and an end of the second air pipe 7 away from the bellows 10 passes through the side wall of the connecting plate 6 and is connected to the air delivery channel 53, and a circular groove is arranged on the top of the push block 11, and a bellows 10 is fixedly arranged in the circular groove. A telescopic tube 22 is provided, and a top plate 23 is fixedly provided on the top of the telescopic tube 22. An airway is provided in the pushing block 11, and the bottom of the circular groove and the end of the bellows 10 are connected through the airway, so that the gas in the bellows 10 can enter the telescopic tube 22 in the circular groove through the airway, so that the telescopic tube 22 expands and rises; the end of the pushing block 11 is provided with an inclined surface facing the rotating shaft 8, and the top of the inner wall of the groove is elastically connected to a slider 19, and the slider 19 can make the rotating shaft 8 move downward and separate from the groove when there is no force.

[0037] When in use, in the initial state, the bellows 10 is in a retracted state, and the pushing block 11 is in a position close to the fixed block 41, the square plate 42 and the collecting box 43 are retracted between the support plates, and the telescopic tube 22 and the top plate 23 are retracted in the circular groove; when the trigger plate 52 moves downward, the gas in the first airbag 51 enters the bellows 10 through the air delivery channel 53 and the second air pipe 7, so that the bellows 10 expands in the slide groove 45, and then pushes the pushing block 11 to move in the direction of the square plate 42, so that the square plate 42 moves away from the fixed block 41 through the cooperation of the pushing block 11 and the rotating shaft 8. In this process, since the top of the top plate 23 is correspondingly located in the slide groove 45, the gas in the bellows 10 cannot fill the telescopic tube 22, causing the telescopic tube 22 to expand and rise. When the two sets of rotating shafts 8 move to the position corresponding to the groove, the end of the pushing block 11 corresponds to the position of the notch, and then the bellows 10 continues to expand and pushes the pushing block 11 to move The push block 11 pushes the shaft 8 upward into the groove through the inclined surface, and the end of the push block 11 extends into the notch. At this time, the gas in the bellows 10 enters the telescopic tube 22 through the airway, causing the telescopic tube 22 to expand upward, and then pushes the shaft 8 to move into the groove through the top plate 23, thereby causing the square plate 42 to move upward, and allowing the collection box 43 to cover the end of the cutter head, and also allowing the cleaning block 14 to extend into the air outlet 35, and then the sliding arc plate 5 can clean the air outlet 35 through the cleaning block 14; when the cleaning is completed, release the pressure on the trigger plate 52, and then the first airbag 51 moves and resets, causing the bellows 10 to shrink and reset. In this process, the telescopic tube 22 shrinks downward in the circular groove, and then the bellows 10 drives the push block 11 to move and reset, and the shaft 8 moves to the slide groove 45 under the gravity of the square plate 42 and the elasticity of the slider 19, and then the square plate 42 moves and resets under the elasticity.

[0038] See also Figure 3-Figure 6 , Fig. 9 Preferably, the cleaning block 14 is provided with a hollow structure, and through holes are provided on both sides of the relative groove of the cleaning block 14, and an opening connected to the movable block 44 is provided at the bottom of the cleaning block 14 near the movable block 44, and a first pull rope 16 is fixedly provided at one end of the bottom of the cleaning block 14 near the fixed block 41, and a positioning rod is rotatably provided at the top of the inner wall of the movable block 44, and the end of the first pull rope 16 away from the cleaning block 14 passes around the positioning rod and is fixedly provided with a wire roller 15, and the wire roller 15 is rotatably connected to the inner wall of the movable block 44, and a second pull rope 17 is wound around the wire roller 15, and the end of the second pull rope 17 away from the wire roller 15 is fixedly connected with a sleeve 20, the sleeve 20 is slidably sleeved on the periphery of a group of rotating shafts 8, and one end of the sleeve 20 is rotatably connected with a push plate 21, and the bottom of the push plate 21 is fixedly connected to the top of the round rod 13, and one end of a group of rotating shafts 8 is provided with a second tooth groove 81 in a ring array along the center of the circle, and a group of grooves are provided with a first tooth groove 18 meshing with the second tooth groove 81.

[0039] When in use, when the square plate 42 moves to the end of the slide groove 45 away from the fixed block 41 through the cooperation of the bellows 10 and the push block 11, and then the rotating shaft 8 is pushed into the groove through the cooperation of the telescopic tube 22 and the top plate 23, a group of rotating shafts 8 are meshed with the first tooth groove 18 through the second tooth groove 81, so that a group of rotating shafts 8 rotate, and the rotation of a group of rotating shafts 8 drives the sleeve 20 to rotate, and the rotation of the sleeve 20 reels the second pull rope 17, so that the second pull rope 17 is spread out from the wire roller 15 and drives the wire roller 15 to rotate. When the wire roller 15 rotates, the first pull rope 16 can be reeled in. The first pull rope 16 is reeled in and then pulls the cleaning block 14 to move toward the air outlet 35, so that the cleaning block 14 extends deeper into the air outlet 35. When the sliding arc plate 5 makes the movable block 44 slide in the collecting box 43, the round rod 13 slides and drives the sleeve 20 to slide on the rotating shaft 8 through the push plate 21, thereby realizing the synchronous movement of the round rod 13 and the sleeve 20, and it is not easy for the second pull rope 17 or the first pull rope 16 to be pulled and broken.

[0040] Further, preferably, a second airbag 12 is provided in the fixed block 41, one end of the second airbag 12 is fixedly connected to the inner wall of the fixed block 41, the other end of the second airbag 12 is fixedly connected to the connecting plate 6, a movable groove 61 is provided at one end of the connecting plate 6 close to the vertical plate 9, a first air pipe 62 connected to the second airbag 12 is provided in the movable groove 61, the round rod 13 is a hollow structure, and the round rod 13 is connected to the movable block 44, one end of the round rod 13 away from the movable block 44 is fixedly connected to the first air pipe 62, and the second airbag 12 is connected to the movable block 44 through the first air pipe 62 and the round rod 13.

[0041] When in use, in the initial state, the cleaning block 14 is retracted in the movable block 44, and the end of the cleaning block 14 protrudes from the top of the movable block 44, the round rod 13 is at the lower end position of the vertical plate 9, and the movable block 44 is at one end position close to the second airbag 12 in the collection box 43, at this time, the second airbag 12 is in a retracted state; when the rotating shaft 8 is in the groove, the cleaning block 14 extends into the air outlet 35, and then the sliding arc plate 5 is used to make the movable block 44 slide to the other end in the collection box 43 through the cooperation of the connecting plate 6, the vertical plate 9, and the round rod 13. At this time, the sliding cleaning block 14 cleans the port in the air outlet 35 and scrapes off the impurities attached thereto. In this process, the second airbag 12 is gradually stretched, so that the second airbag 12 generates negative pressure, and then negative pressure is generated in the movable block 44 through the movable groove 61 and the round rod 13, and then the cleaning block 14 generates adsorption force through the bottom opening and through hole of the cleaning block 14, and then the cleaning block 14 generates adsorption force. After the impurities in the air outlet 35 are scraped off, they are absorbed into the movable block 44 and then absorbed into the second airbag 12 through the round rod 13 and the first air pipe 62, so that the removed impurities are collected and will not float in the external environment to cause pollution to the diaphragm. Of course, a one-way valve is provided at the connection between the first air pipe 62 and the second airbag 12, so that when the second airbag 12 generates negative pressure, the one-way valve opens, and the second airbag 12 is provided with a discharge port at one end away from the connecting plate 6, and a filter and a one-way valve are provided in the discharge port, so that when the second airbag 12 changes from an expanded state to a contracted state, the gas in the second airbag 12 can be discharged through the one-way valve, and the filter blocks the impurities collected in the second airbag 12 to prevent them from being discharged with the air. When the second airbag 12 expands from a contracted state, the one-way valve provided on the second airbag 12 is in a closed state, and the one-way valve at the connection between the first air pipe 62 and the second airbag 12 is in an open state.

Claims

1. A cooling air knife, comprising an air knife assembly; characterized in that: The wind knife assembly comprises a pipeline, a second mounting plate is mounted on both ends of the pipeline, a first mounting plate is mounted on one end of the second mounting plate away from the pipeline, a bottom end of the first mounting plate is assembled and connected with both ends of the casting roll, an air inlet is connected to one end of the pipeline, a fan assembly is mounted on one end of the air inlet away from the pipeline, a cutter head is mounted on one end of the pipeline away from the second mounting plate, an air outlet connected to the pipeline is mounted on the cutter head, and a cleaning assembly is mounted on the bottom of the air outlet; The cleaning assembly comprises a fixed block; the fixed block is assembled and arranged at the bottom of the air outlet, support plates are arranged on both sides of one end of the fixed block close to the air outlet, a square plate is slidably arranged between the support plates, a collection box is fixedly arranged at one end of the square plate away from the fixed block, a movable block is slidably arranged in the collection box, and a cleaning block is elastically arranged in the movable block; The support plate is provided with a slide groove, and a rotating shaft slidably connected to the slide groove is provided on the side wall of the square plate. Two groups of rotating shafts are provided on the side wall of the square plate. The side wall of the support plate at one end away from the fixed block is provided with a groove slidably adapted to the rotating shaft. The groove is connected to the top of the end of the slide groove away from the fixed block, and a notch is provided at the end of the slide groove away from the fixed block. A round rod is fixedly provided at one end of the movable block close to the square plate, a vertical plate is slidably provided at one end of the round rod away from the movable block, the end of the round rod away from the movable block slides through the square plate, the vertical plate is slidably provided at the end of the fixed block close to the square plate, a connecting plate is fixedly provided at one end of the vertical plate away from the round rod, an arc plate is fixedly provided at one end of the connecting plate away from the vertical plate, and the arc plate is slidably fitted with the periphery of the pipeline; A first airbag is arranged in one end of the arc plate away from the connecting plate, a trigger plate is fixedly arranged on one end of the first airbag away from the connecting plate, the trigger plate is slidably fitted with the inner wall of the arc plate, and an air delivery channel connected with the end of the first airbag away from the trigger plate is arranged on the inner wall of the arc plate; A pushing block is slidably connected in the slide groove, a bellows is fixedly arranged at one end of the pushing block close to the fixed block, an end of the bellows away from the pushing block is fixedly connected to the support plate, an end of the bellows away from the pushing block passes through the support plate and the side wall of the fixed block to be fixedly connected to a second air pipe, an end of the second air pipe away from the bellows passes through the side wall of the connecting plate to communicate with the air delivery channel, a circular groove is arranged on the top of the pushing block, a telescopic tube is fixedly arranged in the circular groove, a top plate is fixedly arranged on the top of the telescopic tube, an airway is arranged in the pushing block, and the bottom of the circular groove and the end of the bellows are communicated through the airway; A first pull rope is fixedly arranged at one end of the bottom of the cleaning block close to the fixed block, a positioning rod is rotatably arranged at the top of the inner wall of the movable block, and a wire roller is fixedly arranged at one end of the first pull rope away from the cleaning block, which is rotatably connected to the inner wall of the movable block; A second pull rope is wound on the wire roller, and one end of the second pull rope away from the wire roller is fixedly connected to a sleeve. The sleeve is slidably sleeved on the periphery of a group of rotating shafts, and one end of the sleeve is rotatably connected to a push plate, and the bottom of the push plate is fixedly connected to the top of the round rod.

2. A cooling air knife according to claim 1, characterized in that: The cleaning block is provided with a hollow structure, and through holes are provided on both sides of the cleaning block relative to the groove, and an opening communicating with the movable block is provided at the bottom of the cleaning block close to the movable block.

3. The cooling air knife according to claim 1, characterized in that: A second airbag is arranged in the fixed block, one end of the second airbag is fixedly connected to the inner wall of the fixed block, the other end of the second airbag is fixedly connected to the connecting plate, an end of the connecting plate close to the vertical plate is provided with a movable groove, a first air pipe connected to the second airbag is arranged in the movable groove, the round rod is a hollow structure, and the round rod is connected to the movable block, and an end of the round rod away from the movable block is fixedly connected to the first air pipe.

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