A shearing device with automatic trimming function for aluminum material of roller shutter door

Abstract

The application discloses a shearing device with automatic trimming function for aluminum material of roller shutter door, relates to the technical field of shearing, and comprises a base. A conveying roller, a pressing roller, a leveling component, a shearing component and a trimming component are sequentially arranged on the base along the conveying direction of the aluminum material. The conveying roller and the pressing roller are rotationally connected with the base. The leveling component is fixedly connected with the base. The trimming component is fixedly connected with the base. The shearing component is fixedly connected with the base. The pressing roller is symmetrically arranged on both sides of the conveying aluminum material, and the aluminum material is pre-leveled so as to enter the leveling component in a relatively flat state. When the aluminum material enters the leveling component, the leveling component can detect the protrusions and depressions on the surface of the aluminum material and simultaneously level the aluminum material, so that the aluminum material enters the shearing component in a flat state. The shearing component can cut the aluminum material into aluminum strips with the required width. The trimming component can polish the cut end of the aluminum strip after shearing, so that the edge quality of the aluminum strip is improved.

Description

Technical Field

[0001] This invention relates to the field of shearing technology, specifically a shearing device for aluminum profiles of roller shutter doors with automatic trimming function. Background Technology

[0002] In the roller shutter door manufacturing industry, aluminum profiles are widely used as core components due to their lightweight, corrosion resistance, and high strength. These aluminum profiles require precise shearing and edge treatment during production to meet dimensional matching and sealing requirements during assembly. Traditional shearing devices generally suffer from the following drawbacks:

[0003] Lack of trimming function: Conventional equipment only completes basic cutting, and the cut is prone to burrs or curling, requiring subsequent grinding or chamfering processes, which increases the number of production steps.

[0004] Uncontrolled flatness of aluminum materials: Roller shutter aluminum materials are mostly long, thin-walled structures, which are prone to warping during transport due to stress release. Existing equipment only performs the conveying function and lacks an online straightening mechanism, resulting in localized suspension of aluminum materials during shearing, causing oblique cuts or chipped edges, and significantly increasing the scrap rate.

[0005] While existing technologies (such as CN222520078U, an adjustable aluminum cutting device) improve the adaptability of aluminum width through the synergy between the limit adjustment device and the cutting device, their core focus is on adjusting the cutting size, without addressing edge processing quality and dynamic profile straightening. Therefore, there is an urgent need to develop a shearing device that integrates automatic trimming and real-time leveling functions, simultaneously completing high-precision cutting, burr removal, and flatness correction within a single processing flow to improve processing efficiency. Summary of the Invention

[0006] The purpose of this invention is to provide a cutting device for aluminum profiles of roller shutter doors with automatic trimming function, so as to solve the problems mentioned in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: the shearing device includes a base, on which a conveying roller, a pressing roller, a leveling component, a shearing component and an edge trimming component are arranged sequentially along the conveying direction of the aluminum material. The conveying roller and the pressing roller are rotatably connected to the base, the leveling component is fixedly connected to the base, the edge trimming component is fixedly connected to the base, and the shearing component is fixedly connected to the base.

[0008] The base, placed on the ground, provides stable support for all components. This invention is used to cut rolled aluminum strips to facilitate the subsequent manufacturing of roller shutter doors. Rewinding and unwinding devices are arranged on both sides of the shearing device to drive the aluminum strip through the shearing device at a certain speed; this is existing technology and will not be elaborated upon here. Conveying rollers are used to smoothly convey the aluminum material. Pressure rollers are symmetrically arranged on both sides of the conveyed aluminum material to pre-level it, ensuring it enters the leveling component in a relatively flat state. However, the aluminum surface will still have some minor deformations, such as protrusions or depressions. After the aluminum material enters the leveling component, the leveling component can detect these protrusions and depressions and simultaneously level the aluminum material, ensuring it enters the shearing component in a flat state, thereby improving the accuracy of the shearing. The shearing component can cut the aluminum material into aluminum strips of the required width. The trimming component can grind the cut edges of the aluminum strip after shearing, thereby improving the edge quality of the aluminum strip.

[0009] Furthermore, the shearing component includes a support rod, a cylinder, a mounting base, a disc cutter, and a mating roller. The support rod is fastened to the base, the cylinder is fastened to the support rod, the output end of the cylinder is drivenly connected to the mounting base, the disc cutter is rotatably connected to the mounting base, and the mating roller is rotatably connected to the base. The mating roller is provided with a shearing ring, and the shearing ring and the disc cutter are arranged alternately.

[0010] The support rod is fixed on the base to provide stable support for the shearing component. The cylinder is used to adjust the position of the disc blade to adapt to the shearing of aluminum materials of different thicknesses. The shearing rings and disc blades are arranged in an alternating manner to apply shearing force to the aluminum material, thereby shearing it. During the shearing operation, the disc blade and the cooperating roller fixed on the mounting base are activated. Under the combined action of the rotating disc blade and the cooperating roller, the aluminum material conveyed to the shearing component position will be cut into different widths.

[0011] Furthermore, the trimming component includes a trimming roller and a grinding ring. The trimming roller is rotatably connected to the base, and the grinding ring is fastened to the trimming roller. The side of the grinding ring is provided with a grinding layer.

[0012] The trimming roller can rotate freely on the base. When the slit aluminum material passes through the trimming roller, the cut of the aluminum material will pass through the side of the grinding ring. The side of the grinding ring is provided with a grinding layer. Under the action of the grinding layer, the cut of the aluminum material will be ground flat.

[0013] Furthermore, there are several grinding rings, and the positions of these grinding rings correspond to those of the disc cutter.

[0014] Several disc cutters can cut aluminum material into several aluminum strips. The cut edges of these aluminum strips need to be ground. By setting grinding rings corresponding to the disc cutters, the grinding rings can be aligned with the cut edges of the aluminum material, thereby improving the grinding effect.

[0015] Furthermore, the leveling component includes a protective shell, an air extraction assembly, and a flushing pipe. The protective shell is securely connected to the base. The protective shell is provided with a passage groove and a water inlet channel. Scrapers are provided on the upper and lower sides of the passage groove. The flushing pipe is connected to the water inlet channel and is arranged on both sides of the passage groove. The outlet of the flushing pipe faces the aluminum material. The air extraction assembly is securely connected to the protective shell.

[0016] The protective shell is fixed on the base to provide support for the leveling components. The size of the passageway matches the size of the aluminum material, allowing the aluminum material to enter smoothly. The aluminum material surface may have some dirt, which needs to be removed before shearing. Before the aluminum material enters the passageway, the surface of the aluminum material is rinsed by several rinsing pipes arranged on the upper and lower sides of the passageway to remove dirt. After rinsing the aluminum material surface, if there are depressions, after the water droplets on the flat surface are scraped off by the scraper, water will remain in the depressions due to the surface tension of the water. The larger the depression, the more water remains. By drying the aluminum plate and detecting the amount of water evaporated, the size of the depression can be determined. The evaporated air is extracted by the air extraction component, thus forming a gas flow, allowing the detection to be carried out continuously.

[0017] Furthermore, a heating groove, a detection groove, and an adjustment groove are arranged sequentially along the aluminum material conveying direction inside the protective shell; a heating wire is installed in the heating groove; the detection groove is connected to the heating groove and is equipped with a humidity sensor to detect the amount of water evaporated on the aluminum material to determine the flatness of the aluminum material; an air bladder is installed in the adjustment groove, which is connected to an external air source and can adjust the expansion rate according to the detection result of the humidity sensor to compress the aluminum material for leveling.

[0018] If there are depressions on the surface of the aluminum material, and the larger the depression, the more water adheres to it; when the aluminum material passes through the heating tank, the water will evaporate under the action of the heating wire, forming an airflow containing water vapor. Under the action of the air extraction component, the airflow will flow into the detection tank. The size of the depression can be determined by detecting the humidity of this airflow. The higher the humidity, the larger the depression, and the larger the volume of the air bladder at the corresponding position will expand, thereby leveling the depression; if the depression is located on the upper surface of the aluminum material, the air bladder below the corresponding position will expand, and the air bladder above will provide support, lifting the depression; if the depression is located on the lower surface of the aluminum material, the air bladder above the corresponding position will expand, leveling the depression.

[0019] Furthermore, the air extraction assembly includes an air pump and an air collection pipe. The air pump is securely connected to the protective shell, one end of the air collection pipe is connected to the detection slot, and the other end of the air collection pipe is connected to the inlet of the air pump.

[0020] The air pump is the main power source for the air extraction component. During operation, the air pump generates negative pressure to extract the gas from the detection tank, creating an airflow between the detection tank and the heating tank, thereby drawing the gas containing water vapor into the detection tank.

[0021] Furthermore, the air extraction assembly also includes an air distribution pipe, one end of which is connected to the outlet of the air pump, and the other end of which is connected to the flushing pipe.

[0022] The gas drawn out by the air pump is injected into the flushing pipe through the air distribution pipe, so that the airflow and water flow mix in the flushing pipe to form a gas-liquid mixture. The gas injection increases the volume and turbulence of the fluid, and the resulting gas-liquid two-phase flow has stronger impact and shear force, which can more effectively flush the surface, thereby improving the flushing effect.

[0023] Furthermore, the heating tank, detection tank, and adjustment tank are symmetrically arranged on both sides of the passage tank; the protective shell is provided with several sets of heating tanks, detection tanks, and adjustment tanks arranged in sequence.

[0024] By arranging several heating slots, detection slots, and adjustment slots in sequence, the inside of the protective shell is effectively divided into several areas. This allows for targeted adjustments to be made to different areas of the aluminum material, thereby improving the accuracy and efficiency of leveling.

[0025] Furthermore, the scraper is arranged at an angle, and a flexible layer is provided on the side of the scraper closest to the aluminum material. The flexible layer is made of rubber.

[0026] To prevent the aluminum from being scratched, a flexible rubber layer is applied to the scraper, and the scraper is angled to make it easier to remove water.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] 1. The leveling component efficiently removes surface dirt through a gas-liquid mixture flush, and uses a tilted, flexible scraper to remove accumulated water from the leveled surface, while water may adhere to recessed areas. After the aluminum material passes through a heating tank to evaporate residual moisture, the extraction system directs a steam-containing airflow into a detection tank. A humidity sensor precisely measures the steam concentration, providing real-time feedback on the depth and location of recesses on the aluminum surface. This data directly drives the precise expansion of airbags in the adjustment tank; if a recess is at the bottom, the upper airbag is pressurized, and if a recess is at the top, the lower airbag is lifted, achieving online correction of micro-deformations on the aluminum surface. This not only eliminates human inspection errors but also allows the aluminum material to enter the shearing station with ultra-high flatness, fundamentally ensuring the accuracy of subsequent slitting and avoiding skewed or uneven cuts caused by uneven material.

[0029] 2. The shearing component uses a cylinder to dynamically adjust the position of the disc cutter, combined with an interlaced shearing ring structure, to adapt to the slitting requirements of aluminum materials of different thicknesses, ensuring straight cuts. The trimming component, through the corresponding layout of the grinding ring and the slitting blade assembly, ensures that each aluminum strip cut can simultaneously contact the grinding layer, improving edge grinding efficiency and consistency. The exhaust assembly injects the detected waste gas into the flushing pipe to form a gas-liquid two-phase flow, which not only enhances the water flow impact force and improves the cleaning effect, but also achieves energy recycling. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a partial cross-sectional view of the present invention;

[0032] Figure 3 for Figure 2 A magnified view of part A;

[0033] Figure 4 This is a schematic diagram of the leveling component of the present invention;

[0034] Figure 5 This is a partial sectional view of the leveling component;

[0035] Figure 6 for Figure 5 A magnified view of section B;

[0036] Figure 7 This is a schematic diagram showing the arrangement of the heating tank and the adjustment tank.

[0037] In the diagram: 1. Base; 2. Conveying roller; 3. Pressing roller; 4. Leveling component; 41. Protective shell; 411. Through groove; 412. Heating groove; 413. Detection groove; 414. Adjustment groove; 415. Water inlet channel; 42. Air extraction component; 421. Air pump; 422. Air collection pipe; 423. Air distribution pipe; 43. Scraper; 431. Flexible layer; 44. Heating wire; 45. Humidity sensor; 46. Airbag; 47. Flushing pipe; 5. Shearing component; 51. Support rod; 52. Cylinder; 53. Mounting base; 54. Disc cutter; 55. Matching roller; 551. Shearing ring; 6. Trimming component; 61. Trimming roller; 62. Grinding ring. Detailed Implementation

[0038] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Example: Figures 1-7 As shown, the present invention provides a technical solution for a shearing device for aluminum profiles of roller shutter doors with automatic trimming function. The shearing device includes a base 1, on which a conveying roller 2, a pressing roller 3, a leveling component 4, a shearing component 5 and a trimming component 6 are arranged sequentially along the conveying direction of the aluminum profile. The conveying roller 2 and the pressing roller 3 are rotatably connected to the base 1, the leveling component 4 is fixedly connected to the base 1, the trimming component 6 is fixedly connected to the base 1, and the shearing component 5 is fixedly connected to the base 1.

[0040] The base 1 is placed on the ground to provide stable support for all components. This invention is used to cut rolled aluminum strips to facilitate the subsequent manufacturing of roller shutter doors. Rewinding and unwinding devices are arranged on both sides of the shearing device to drive the aluminum strip through the shearing device at a certain speed. This is existing technology and will not be elaborated here. The conveying roller is used to smoothly convey the aluminum material. The pressing roller 3 is symmetrically arranged on both sides of the conveyed aluminum material to pre-level it, allowing it to enter the leveling component 4 in a relatively flat state. However, there will still be some minor deformations on the surface of the aluminum material, such as protrusions or depressions. When the aluminum material enters the leveling component 4, the leveling component 4 can detect the protrusions and depressions on the surface of the aluminum material and simultaneously level it, allowing the aluminum material to enter the shearing component 5 in a flat state, thereby improving the accuracy of the shearing. The shearing component 5 can cut the aluminum material into aluminum strips of the required width. The trimming component 6 can grind the cut edges of the sheared aluminum strips, thereby improving the edge quality of the aluminum strips.

[0041] The shearing component 5 includes a support rod 51, a cylinder 52, a mounting base 53, a disc cutter 54, and a mating roller 55. The support rod 51 is fastened to the base 1, the cylinder 52 is fastened to the support rod 51, the output end of the cylinder 52 is drivenly connected to the mounting base 53, the disc cutter 54 is rotatably connected to the mounting base 53, and the mating roller 55 is rotatably connected to the base 1. The mating roller 55 is provided with a shearing ring 551, and the shearing ring 551 and the disc cutter 54 are arranged alternately.

[0042] The support rod 51 is fixed on the base 1 to provide stable support for the shearing component 5. The cylinder 52 is used to adjust the position of the disc cutter 54 to adapt to the shearing of aluminum materials of different thicknesses. The shearing rings 551 and the disc cutter 54 are arranged in an alternating manner to apply shearing force to the aluminum material, thereby shearing the aluminum material. When performing the shearing operation, the disc cutter 54 and the cooperating roller 55 fixed on the mounting base 53 are activated. Under the combined action of the rotating disc cutter 54 and the cooperating roller 55, the aluminum material conveyed to the position of the shearing component 5 will be cut into different widths.

[0043] The trimming component 6 includes a trimming roller 61 and a grinding ring 62. The trimming roller 61 is rotatably connected to the base 1, and the grinding ring 62 is fastened to the trimming roller 61. The side of the grinding ring 62 is provided with a grinding layer.

[0044] The trimming roller 61 can rotate freely on the base 1. When the cut aluminum material passes through the trimming roller 61, the cut of the aluminum material will pass through the side of the grinding ring 62. The side of the grinding ring 62 is provided with a grinding layer. Under the action of the grinding layer, the cut of the aluminum material will be ground flat.

[0045] Several grinding rings 62 are provided, and the positions of the grinding rings 62 correspond to the disc cutter 54.

[0046] Several disc cutters 54 can cut aluminum material into several aluminum strips. The cut edges of several aluminum strips need to be ground. By setting a grinding ring 62 corresponding to the disc cutter 54, the grinding ring 62 can be aligned with the cut edge of the aluminum material, thereby improving the grinding effect.

[0047] The leveling component 4 includes a protective shell 41, an air extraction component 42, and a rinsing pipe 47. The protective shell 41 is fastened to the base 1. The protective shell 41 is provided with a through groove 411 and a water inlet channel 415. Scrapers 43 are provided on the upper and lower sides of the through groove 411. The rinsing pipe 47 is connected to the water inlet channel 415. The rinsing pipe 47 is arranged on both sides of the through groove 411. The outlet of the rinsing pipe 47 faces the aluminum material. The air extraction component 42 is fastened to the protective shell 41.

[0048] The protective shell 41 is fixed on the base 1 to provide support for the leveling component 4. The size of the through groove 411 matches the size of the aluminum material, allowing the aluminum material to enter the through groove 411 smoothly. The surface of the aluminum material may have some dirt, which needs to be removed before shearing. Before the aluminum material enters the through groove 411, the surface of the aluminum material is rinsed by several rinsing pipes 47 arranged on the upper and lower sides of the through groove 411 to remove dirt. After rinsing the surface of the aluminum material, if there are depressions on the surface of the aluminum material, after the water droplets on the flat surface are scraped off by the scraper 43, water will remain in the depressions due to the surface tension of the water. The larger the depression, the more water remains. By drying the aluminum plate and detecting the amount of water evaporated, the size of the depression can be determined. The evaporated air is extracted by the air extraction component 42 to form a gas flow, so that the detection can be carried out continuously.

[0049] Inside the protective shell 41, a heating groove 412, a detection groove 413, and an adjustment groove 414 are arranged sequentially along the aluminum material conveying direction. The heating groove 412 is equipped with a heating wire 44. The detection groove 413 is connected to the heating groove 412 and is equipped with a humidity sensor 45, which is used to detect the amount of water evaporated on the aluminum material to determine the flatness of the aluminum material. The adjustment groove 414 is equipped with an air bladder 46, which is connected to an external air source and can adjust the expansion rate according to the detection result of the humidity sensor 45 to compress the aluminum material for leveling.

[0050] If there are depressions on the surface of the aluminum material, and the larger the depression, the more water adheres to it; when the aluminum material passes through the heating tank 412, the water will be evaporated under the action of the heating wire 44, forming an airflow containing water vapor. Under the action of the air extraction component 42, the airflow will flow into the detection tank 413. The size of the depression can be determined by detecting the humidity of this airflow through the humidity sensor 45. The higher the humidity, the larger the depression, and the larger the volume of the airbag 46 at the corresponding position will expand, thereby leveling the depression; if the depression is located on the upper surface of the aluminum material, the airbag below the corresponding position will expand, and the airbag above will provide support and lift the depression; if the depression is located on the lower surface of the aluminum material, the airbag above the corresponding position will expand and level the depression.

[0051] The air extraction assembly 42 includes an air pump 421 and an air collection pipe 422. The air pump 421 is fastened to the protective shell 41. One end of the air collection pipe 422 is connected to the detection groove 413, and the other end of the air collection pipe 422 is connected to the inlet of the air pump 421.

[0052] The air pump 421 is the main power source of the air extraction assembly 42. When working, the air pump 421 generates negative pressure to extract the gas in the detection tank 413, so that a flowing airflow is formed between the detection tank 413 and the heating tank 412, thereby drawing the gas with water vapor into the detection tank 413.

[0053] The air extraction assembly 42 also includes an air distribution pipe 423, one end of which is connected to the outlet of the air pump 421, and the other end of which is connected to the flushing pipe 47.

[0054] The gas extracted by the air pump 421 is injected into the flushing pipe 47 through the air distribution pipe 423, so that the airflow and water flow mix in the flushing pipe 47 to form a gas-liquid mixture. The gas injection increases the volume and turbulence of the fluid, and the resulting gas-liquid two-phase flow has stronger impact and shear force, which can more effectively flush the surface, thereby improving the flushing effect.

[0055] Heating tank 412, detection tank 413 and adjustment tank 414 are symmetrically arranged on both sides of the passage 411; the protective shell 41 is provided with several sets of heating tank 412, detection tank 413 and adjustment tank 414 arranged in sequence.

[0056] By arranging several heating grooves 412, detection grooves 413 and adjustment grooves 414 in sequence, the inside of the protective shell 41 is divided into several areas, thereby dividing the aluminum material passing through the grooves 411 into several areas. Targeted adjustments can be made to different areas of the aluminum material, thereby improving the accuracy and efficiency of leveling.

[0057] The scraper 43 is arranged at an angle, and a flexible layer 431 is provided on the side of the scraper 43 near the aluminum material. The flexible layer 431 is made of rubber.

[0058] To prevent the aluminum material from being scratched, a flexible rubber layer 431 is arranged on the scraper, and the scraper 43 is arranged at an angle, which makes it easier to scrape away water.

[0059] The working principle of this invention is as follows: The aluminum strip is first pulled by the winding and unwinding device and smoothly conveyed through the conveying rollers 2, and pre-leveled by the upper and lower pressure rollers 3. Then it enters the key leveling component 4: Before entering the through groove 411, the aluminum strip is sprayed with water by the flushing pipes 47 on both sides. Later, it mixes with the recovered gas to form a gas-liquid mixture with stronger impact force, washing away the surface dirt; then, the upper and lower inclined scrapers 43 scrape off most of the water on the surface of the aluminum strip, but water will remain in the recessed areas due to surface tension. The aluminum strip then enters the segmented heating tank 412 and adjustment tank 414: the heating wire 44 in the heating tank 412 evaporates residual moisture to form water vapor; the steam enters the detection tank 413 with the negative pressure airflow generated by the suction component 42, and the humidity sensor 45 detects the humidity of the steam. The higher the humidity, the deeper the depression. The detection data is fed back to the air bladder 46 in the adjustment tank 414 in real time. The air bladder 46 precisely adjusts the expansion rate according to the depression position and depth, squeezing the aluminum strip upward or downward, lifting or flattening the depression area, and achieving dynamic and precise online leveling. The leveled aluminum strip enters the shearing component 5: the cylinder 52 adjusts the position of the disc cutter 54 according to the thickness of the aluminum material, so that it maintains proper overlap with the shearing ring 551 on the mating roller 55; the high-speed rotating disc cutter 54 and the mating roller 55 work together to apply shearing force to the aluminum strip, cutting it into multiple aluminum strips of the required width. Finally, the slit aluminum strip passes through the trimming component 6, where its cut contacts the grinding layer on the side of the grinding ring 62 at the corresponding position on the trimming roller 61. During rotation, it is polished smooth, burrs are removed, and edge quality is improved, ultimately producing a flat aluminum strip coil with smooth edges that meets the requirements.

[0060] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A shearing device for aluminum profiles of roller shutter doors with automatic trimming function, characterized in that: The shearing device includes a base (1), on which a conveying roller (2), a pressing roller (3), a leveling component (4), a shearing component (5) and an edge trimming component (6) are arranged sequentially along the conveying direction of the aluminum material. The conveying roller (2) and the pressing roller (3) are rotatably connected to the base (1), the leveling component (4) is fixedly connected to the base (1), the edge trimming component (6) is fixedly connected to the base (1), and the shearing component (5) is fixedly connected to the base (1). The leveling component (4) includes a protective shell (41), an air extraction component (42), and a flushing pipe (47). The protective shell (41) is fastened to the base (1). The protective shell (41) is provided with a through groove (411) and a water inlet channel (415). Scrapers (43) are provided on the upper and lower sides of the through groove (411). The flushing pipe (47) is connected to the water inlet channel (415). The flushing pipe (47) is arranged on both sides of the through groove (411). The outlet of the flushing pipe (47) faces the aluminum material. The air extraction component (42) is fastened to the protective shell (41). The protective shell (41) has a heating groove (412), a detection groove (413), and an adjustment groove (414) arranged sequentially along the aluminum material conveying direction. The heating groove (412) is equipped with a heating wire (44). The detection groove (413) is connected to the heating groove (412) and is equipped with a humidity sensor (45) to detect the amount of water evaporated on the aluminum material to determine the flatness of the aluminum material. The adjustment groove (414) is equipped with an air bag (46), which is connected to an external air source and can adjust the expansion rate according to the detection result of the humidity sensor (45) to compress the aluminum material for flattening. The air extraction assembly (42) includes an air pump (421) and an air collection pipe (422). The air pump (421) is fastened to the protective shell (41). One end of the air collection pipe (422) is connected to the detection groove (413), and the other end of the air collection pipe (422) is connected to the inlet of the air pump (421). The air extraction assembly (42) also includes an air distribution pipe (423), one end of which is connected to the outlet of the air pump (421), and the other end of which is connected to the flushing pipe (47). The heating groove (412), detection groove (413) and adjustment groove (414) are symmetrically arranged on both sides of the passage groove (411); the protective shell (41) is provided with several sets of heating grooves (412), detection grooves (413) and adjustment grooves (414) arranged in sequence.

2. The shearing device for aluminum profiles of roller shutter doors with automatic trimming function according to claim 1, characterized in that: The shearing component (5) includes a support rod (51), a cylinder (52), a mounting base (53), a disc cutter (54), and a mating roller (55). The support rod (51) is fastened to the base (1), the cylinder (52) is fastened to the support rod (51), the output end of the cylinder (52) is connected to the mounting base (53) in a transmission manner, the disc cutter (54) is rotatably connected to the mounting base (53), and the mating roller (55) is rotatably connected to the base (1). The mating roller (55) is provided with a shearing ring (551), and the shearing ring (551) and the disc cutter (54) are arranged alternately.

3. The shearing device for aluminum profiles of roller shutter doors with automatic trimming function according to claim 2, characterized in that: The trimming component (6) includes a trimming roller (61) and a grinding ring (62). The trimming roller (61) is rotatably connected to the base (1), and the grinding ring (62) is fastened to the trimming roller (61). The grinding ring (62) has a grinding layer on its side.

4. The shearing device for aluminum profiles of roller shutter doors with automatic trimming function according to claim 3, characterized in that: The grinding rings (62) are provided in a plurality of positions, and the positions of the plurality of grinding rings (62) correspond to the disc cutter (54).

5. A shearing device for aluminum profiles of roller shutter doors with automatic trimming function according to claim 1, characterized in that: The scraper (43) is arranged at an angle, and a flexible layer (431) is provided on the side of the scraper (43) near the aluminum material. The flexible layer (431) is made of rubber.

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