Aluminum alloy door and window cutting device

Abstract

The invention relates to the technical field of door and window machining, and discloses an aluminum alloy door and window cutting device which comprises a base, two symmetrical guide rails are fixedly connected to the upper surface of the base through bolts, and a cutting assembly for machining a workpiece is arranged in the middle of the two guide rails. Limiting assemblies for limiting the workpieces are arranged on the two guide rails and located on the two sides of the cutting assembly, and feeding assemblies for moving the workpieces are arranged on the upper surface of the base and located at the two ends of the guide rails. The problem that the cutting precision is affected due to long-time manual work can be solved, meanwhile, the cutting efficiency of the device is improved, the two sides of a workpiece can be clamped and fixed through the two clamping rollers, then the positions of the two sides of the workpiece are limited, the situation that the cutting precision is affected due to the fact that the workpiece deflects in the machining process is prevented, and the machining efficiency is improved. And the automation effect of the device is further improved, and potential safety hazards caused by manual operation are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of door and window processing, and specifically to a cutting device for aluminum alloy doors and windows. Background Art

[0002] As a functional component widely used in modern buildings, the processing precision and efficiency of aluminum alloy doors and windows directly affect the sealing performance, aesthetics and installation quality of door and window products. In the processing process of aluminum alloy profiles, the cutting process is one of the key links determining the dimensional accuracy of profiles.

[0003] The traditional cutting of aluminum alloy profiles mainly relies on manual cutting machines or semi-automatic cutting equipment. In the manual operation mode, the operator needs to visually locate and press the profile with both hands, and rely on experience to control the cutting angle and feed speed. However, there are still the following problems: 1. When cutting manually, it is quite energy-consuming, and long-term manual operation will affect the cutting precision; 2. Pressing the profile by hand for fixation poses a safety hazard and is prone to work-related injury accidents due to operational errors. Summary of the Invention

[0004] Technical Problems to be Solved Aiming at the deficiencies of the prior art, the present invention provides a cutting device for aluminum alloy doors and windows, mainly to solve the problems that when cutting manually, it is quite energy-consuming, long-term manual operation will affect the cutting precision, and pressing the profile by hand for fixation poses a safety hazard and is prone to work-related injury accidents due to operational errors.

[0005] Technical Solutions To achieve the above object, the present invention provides the following technical solutions: A cutting device for aluminum alloy doors and windows, including a base. The upper surface of the base is fixedly connected symmetrically with two guide rails by bolts. A cutting assembly for processing workpieces is provided at the middle position of the two guide rails. Limiting assemblies for limiting workpieces are provided on both sides of the cutting assembly on the two guide rails. Feeding assemblies for moving workpieces are provided at both ends of the guide rails on the upper surface of the base. Symmetrically arranged linear motor modules for translating the two limiting assemblies are provided between the two guide rails on the upper surface of the base.

[0006] Further, the cutting assembly includes a fixed seat fixed at the middle position of the upper surfaces of two guide rails. Symmetrically arranged U-shaped frames are fixedly connected to the upper surface of the fixed seat. The tops of the two U-shaped frames are fixedly connected with a housing I respectively, and the side walls of the housing I are of a double-layer structure. A housing II is slidably connected in the sandwich layer of the side wall of the housing I. A protective cover communicating with its interior is fixedly connected to the top outer wall of the housing II. A rotating shaft is rotatably connected between the inner walls on both sides of the protective cover. A cutting blade is arranged on the circumferential outer wall of the rotating shaft. A driving motor I for rotating the rotating shaft axially is fixedly connected to one side of the protective cover. A telescopic assembly for sliding the housing II in the housing I is arranged between the fixed seat and the housing II. Avoidance openings are formed on both sides of the housing I and the housing II.

[0007] On the basis of the foregoing solution, the telescopic assembly includes fixing plates II fixedly connected to one side of the housing II and one side of the fixed seat. An electric push rod is fixedly connected between the two fixing plates II. A group of fixing plates I, each group having two, are fixedly connected to the outer walls on both sides of the housing II and the two sides of the fixed seat. A telescopic rod is fixedly connected between the two fixing plates I at corresponding positions.

[0008] As a further solution of the present invention, a chip discharging pipe communicating with its interior is fixedly connected to the lower surface of the housing I. Support rollers I for lifting the bottom of the workpiece are symmetrically arranged on both sides of the upper end opening of the chip discharging pipe.

[0009] Further, the limiting assembly includes two connecting seats slidably connected to the two guide rails. A U-shaped plate is fixedly connected to the upper surface of the connecting seat. L-shaped frames are slidably connected to both sides of the U-shaped plate. Clamping rollers are rotatably connected to the adjacent ends of the two L-shaped frames. A support roller II is arranged between the U-shaped plates and is located below the clamping rollers.

[0010] On the basis of the foregoing solution, fixing blocks are fixedly connected to both ends of the top outer wall of the U-shaped plate. A semi-bidirectional lead screw is rotatably connected between the two fixing blocks. The two ends of the semi-bidirectional lead screw respectively pass through the opposite sides of the two fixing blocks in sequence and pass through one end of the two L-shaped frames and are threadedly connected thereto. Rotating disks are fixedly connected to both ends of the semi-bidirectional lead screw.

[0011] As a further solution of the present invention, the feeding assembly includes mounting seats fixedly connected to the upper surface of the base and located at both ends of the guide rails. Two side plates are fixedly connected to the upper ends of the mounting seats. Two rotating rollers are arranged between the two side plates. A driving motor II for rotating the rotating roller axially is fixedly connected to one side of one of the side plates. An adjusting assembly for moving the other rotating roller up and down is arranged between the two side plates.

[0012] Furthermore, the adjusting component includes limiting openings formed in the two side plates. Sliders are slidably connected in both of the two limiting openings. A rotating roller is rotatably connected between the two sliders. The upper surfaces of the two sliders are rotatably connected with threaded rods through bearings, and the top ends of the threaded rods pass through the tops of the side plates and are threadedly connected thereto. Step-shaped rubber rings are adhered to the circumferential outer walls of the two rotating rollers.

[0013] Advantages Compared with the prior art, the present invention provides an aluminum alloy door and window cutting device, which has the following advantages: 1. The cutting component provided in the present invention can increase the automation effect of the device. By starting the electric push rod to contract, the cutting blade can be brought into contact with the workpiece for cutting operations, reducing the problem of affecting the cutting accuracy due to long-term manual work, and at the same time improving the cutting efficiency of the device.

[0014] 2. The telescopic component provided in the present invention performs telescopic movement, so that the cutting blade synchronously moves downward to cut the workpiece. There is no need for manual movement of the second housing, increasing the automation effect of the device, and thus greatly increasing the cutting efficiency of the device.

[0015] 3. The chip removal pipe provided in the present invention can discharge the generated chips during cutting work, thus avoiding the situation that the chips accumulate in the first housing for a long time and affect the cutting work of the device.

[0016] 4. The limiting component provided in the present invention can clamp and fix both sides of the workpiece through two pinch rollers, thereby limiting the positions of both sides thereof and preventing the workpiece from skewing during the processing, which affects the cutting accuracy. Further increasing the automation effect of the device and avoiding potential safety hazards caused by manual operation.

[0017] 5. After the workpiece is placed on the left feeding component, the feeding component provided in the present invention can convey the workpiece from left to right by starting the second driving motor. There is no need for manual insertion of the workpiece into the device completely, saving manpower. And the step-shaped rubber rings provided can further prevent the workpiece from shifting left and right. Description of the Drawings

[0018] Figure 1 It is a three-dimensional structural schematic diagram of an aluminum alloy door and window cutting device proposed by the present invention; Figure 2 It is of an aluminum alloy door and window cutting device proposed by the present invention Figure 1 partial enlarged structural schematic diagram; Figure 3 It is an enlarged structural schematic diagram of the cutting component of an aluminum alloy door and window cutting device proposed by the present invention; Figure 4 Internal structural schematic diagram of the cutting component of a cutting device for aluminum alloy doors and windows proposed by the present invention; Figure 5 Enlarged structural schematic diagram of the feeding component of a cutting device for aluminum alloy doors and windows proposed by the present invention; Figure 6 Enlarged structural schematic diagram of the limiting component of a cutting device for aluminum alloy doors and windows proposed by the present invention.

[0019] In the figure: 1. Base; 2. Guide rail; 3. Linear motor module; 4. Cutting component; 5. Limiting component; 6. Feeding component; 7. Fixed seat; 8. U-shaped frame; 9. Chip removal pipe; 10. Housing I; 11. Housing II; 12. Avoidance opening; 13. Protective cover; 14. Driving motor I; 15. Fixed plate I; 16. Fixed plate II; 17. Slide bar; 18. Electric push rod; 19. Support roller I; 20. Rotating shaft; 21. Cutting blade; 22. Rotating roller; 23. Mounting seat; 24. Side plate; 25. Limiting opening; 26. Slide block; 27. Threaded rod; 28. Rubber ring; 29. Driving motor II; 30. Connecting seat; 31. Support roller II; 32. U-shaped plate; 33. L-shaped frame; 34. Fixed block; 35. Semi-bidirectional lead screw; 36. Clamping roller. Specific embodiments

[0020] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any sequential or technical meanings. The terms "connection" and "coupling" as used in the present invention, unless otherwise specified, both include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0022] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0023] Referring to Figures 1-6 , an aluminum alloy door and window cutting device, comprising a base 1. Two symmetrical guide rails 2 are fixedly connected to the upper surface of the base 1 by bolts. A cutting assembly 4 for processing workpieces is arranged at the middle position on the two guide rails 2. Limiting assemblies 5 for limiting workpieces are arranged on both sides of the cutting assembly 4 on the two guide rails 2. Feeding assemblies 6 for moving workpieces are arranged at both ends of the guide rails 2 on the upper surface of the base 1. Two symmetrical linear motor modules 3 for translating the two limiting assemblies 5 respectively are arranged between the two guide rails 2 on the upper surface of the base 1. A chip discharge pipe 9 communicated with its interior is fixedly connected to the lower surface of the first housing 10 by bolts. Support rollers 19 for lifting the bottom of the workpiece are fixedly connected to the bottom inner wall of the first housing 10 at symmetrical positions at the orifice of the chip discharge pipe 9. During the cutting work process, the generated chips fall to the bottom of the first housing 10 and are discharged through the chip discharge pipe 9 arranged at its bottom. By arranging the chip discharge pipe 9, the generated chips can be discharged during the cutting work, thereby avoiding the situation that the chips accumulate in the first housing 10 for a long time and affecting the cutting work of the device. Before cutting an aluminum alloy pipe, first insert the workpiece through the left feeding assembly 6, then limit it through the left limiting assembly 5, then pass through the cutting assembly 4 in the middle, then limit the workpiece again through the right limiting assembly 5, and finally output the workpiece through the right feeding assembly 6, so as to complete the processing of the workpiece.

[0024] In the present invention, the cutting assembly 4 includes a fixed seat 7 fixed at the middle position on the upper surfaces of two guide rails 2. Symmetrically arranged two U-shaped frames 8 are fixedly connected to the upper surface of the fixed seat 7 by bolts. At the top ends of the two U-shaped frames 8, a housing one 10 is fixedly connected by bolts. The side walls of the housing one 10 are of a double-layer structure. A housing two 11 is slidably connected in the sandwich layer of the side wall of the housing one 10. A protective cover 13 communicating with its interior is fixedly connected to the outer wall of the top of the housing two 11 by bolts. A rotating shaft 20 is rotatably connected between the inner walls on both sides of the protective cover 13. A cutting blade 21 is provided on the circumferential outer wall of the rotating shaft 20. A driving motor one 14 for rotating the rotating shaft 20 axially is fixedly connected to one side of the protective cover 13 by bolts. A telescopic assembly for sliding the housing two 11 in the housing one 10 is provided between the fixed seat 7 and the housing two 11. Avoidance openings 12 are formed on both sides of the housing one 10 and the housing two 11. By providing the cutting assembly 4, before cutting the workpiece, the driving motor one 14 is first started to make the cutting blade 21 rotate at a high speed to prepare for the cutting work. And by providing the housing one 10 and the housing two 11, it can be ensured that when cutting the workpiece, the generated debris is blocked, preventing the debris from splashing onto the ground and requiring manual secondary treatment, saving time and increasing the cutting efficiency of the device. And by sliding the housing two 11 in the housing one 10, the cutting blade 21 can be moved downward, and then the workpiece is cut. By providing the cutting assembly 4, the automation effect of the device can be increased. By starting the electric push rod 18 to contract, the cutting blade 21 can be brought into contact with the workpiece for cutting operation, reducing the labor cost while increasing the cutting efficiency of the device. The telescopic assembly includes a fixing plate two 16 fixedly connected to one side of the housing two 11 and one side of the fixed seat 7 by bolts. An electric push rod 18 is fixedly connected between the two fixing plates two 16 by bolts. A group of fixing plates one 15 are fixedly connected to the outer walls on both sides of the housing two 11 and both sides of the fixed seat 7 by bolts, and each group has two. A telescopic rod 17 is fixedly connected between the two corresponding fixing plates one 15 by bolts. When cutting operation is required, the electric push rod 18 is first started to contract, driving the housing two 11 fixed thereto to slide downward in the housing one 10, so that the cutting blade 21 moves downward as the housing two 11 moves downward, and then the workpiece is cut. By providing the telescopic assembly to perform telescopic movement, the cutting blade 21 is synchronously moved downward to cut the workpiece, and there is no need for manual movement of the housing two 11, increasing the automation effect of the device, and thus greatly increasing the cutting efficiency of the device.

[0025] To prevent the workpiece from skewing during processing, the limit component 5 includes two symmetric connecting seats 30 slidably connected to the two guide rails 2. The upper surface of the connecting seat 30 is fixedly connected with a U-shaped plate 32 by bolts. Both sides of the U-shaped plate 32 pass through the inner walls on both sides and are slidably connected with L-shaped frames 33. The proximal ends of the two L-shaped frames 33 are rotatably connected with pinch rollers 36. A second support roller 31 is provided on the upper surface of the connecting seat 30 and located between the U-shaped plates 32. At both ends of the outer wall of the top of the U-shaped plate 32, fixing blocks 34 are fixedly connected by bolts. A semi-bidirectional lead screw 35 is rotatably connected between the two fixing blocks 34. The two ends of the semi-bidirectional lead screw 35 sequentially pass through the opposite sides of the two fixing blocks 34 and pass through one end of the two L-shaped frames 33 and are threadedly connected thereto. Rotating disks are fixedly connected to both ends of the semi-bidirectional lead screw 35. When it is necessary to limit the left and right sides of the workpiece, the semi-bidirectional lead screw 35 is rotated to drive the two L-shaped frames 33 to move closer to each other along the semi-bidirectional lead screw 35, so that the two pinch rollers 36 are respectively in contact with both sides of the workpiece, thereby completing the limit of both sides of the workpiece. The provided limit component 5 can clamp and fix both sides of the workpiece through the two pinch rollers 36, and then limit the positions of both sides thereof, preventing the workpiece from skewing during processing, thereby affecting the cutting accuracy.

[0026] To facilitate the conveyance of workpieces, the feeding assembly 6 includes mounting seats 23 bolted and fixedly connected to the upper surface of the base 1 and located at both ends of the guide rail 2. At both ends of the upper surface of the mounting seat 23, side plates 24 are bolted and fixedly connected. Between the two side plates 24, there are two rotating rollers 22, and one of them is rotatably connected between the two side plates 24. On one side of one of the side plates 24, a second driving motor 29 for rotating this rotating roller 22 along the axial direction is bolted and fixedly connected. Between the two side plates 24, there is an adjusting assembly for moving the other rotating roller 22 up and down. The adjusting assembly includes limiting ports 25 formed in the two side plates 24. Sliders 26 are slidably connected in both of the two limiting ports 25. The other rotating roller 22 is rotatably connected between the two sliders 26. On the upper surfaces of the two sliders 26, threaded rods 27 are rotatably connected through bearings, and the top ends of the threaded rods 27 pass through the tops of the side plates 24 and are threadedly connected thereto. Step-shaped rubber rings 28 are adhered to the circumferential outer walls of the two rotating rollers 22. When it is necessary to place the workpiece onto the device, by simultaneously rotating the two threaded rods 27, the threaded rods 27 move downward along the limiting ports 25, causing the sliders 26 to move downward along the sliding ports, so that the rotating rollers 22 approach the workpiece. When they come into contact with it, the workpiece can be squeezed so that its bottom contacts the other rotating roller 22, thereby limiting its vertical position. Subsequently, the second driving motor 29 is started to rotate the rotating roller 22 at the bottom, and then the workpiece can be conveyed. By providing the feeding assembly 6, after the workpiece is placed on the left feeding assembly 6, the workpiece can be conveyed from left to right by starting the second driving motor 29, without the need for manual insertion of the workpiece completely into the device, saving labor. Moreover, by providing the step-shaped rubber rings 28, the left - right offset of the workpiece can be further prevented.

[0027] The present invention is used in the following steps: S1: Before cutting the aluminum alloy pipe, first insert the workpiece through the left feeding assembly 6. After being limited by the left limiting assembly 5, then pass through the cutting assembly 4 in the middle, and then pass through the right limiting assembly 5 to limit the workpiece again. Finally, output the workpiece through the right feeding assembly 6, thus completing the processing of the workpiece; S2: When it is necessary to place the workpiece onto the device, by simultaneously rotating the two threaded rods 27, the threaded rods 27 move downward along the limiting ports 25, causing the sliders 26 to move downward along the sliding ports, so that the rotating rollers 22 approach the workpiece. When they come into contact with it, the workpiece can be squeezed so that its bottom contacts the other rotating roller 22, thereby limiting its vertical position. Subsequently, the second driving motor 29 is started to rotate the rotating roller 22 at the bottom, and then the workpiece can be conveyed; S3: Subsequently, rotate the semi-bidirectional lead screw 35 to drive the two L-shaped frames 33 to move closer to each other along the semi-bidirectional lead screw 35, so that the two pinch rollers 36 contact the two sides of the workpiece respectively, thereby completing the limit on both sides of the workpiece; S4: Then start to contract the electric push rod 18, which drives the housing two 11 fixed to it to slide downward in the housing one 10, so that the cutting blade 21 moves downward as the housing two 11 moves downward, and then cuts the workpiece. Subsequently, start the drive motor one 14 to make the cutting blade 21 rotate at a high speed to prepare for the cutting work. The provided housing one 10 and housing two 11 can ensure that when cutting the workpiece, the generated debris is blocked, preventing the debris from splashing to the ground and requiring manual secondary treatment, saving time and increasing the cutting efficiency of the device. By making the housing two 11 slide in the housing one 10, the cutting blade 21 can move downward to cut the workpiece; S5: During the cutting process, the generated debris falls to the bottom of the housing one 10, and then the debris is discharged through the chip removal pipe 9 provided at the bottom, thus avoiding the situation that the debris accumulates in the housing one 10 for a long time and affects the cutting work of the device.

[0028] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as these combinations of technical features do not conflict, they should be considered as the scope described in this specification.

[0029] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A cutting device for aluminum alloy doors and windows, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly connected with two symmetrical guide rails (2) by bolts; a cutting assembly (4) for processing a workpiece is provided in the middle of the two guide rails (2); a limiting assembly (5) for limiting the workpiece is provided on the two guide rails (2) and located on both sides of the cutting assembly (4); a feeding assembly (6) for moving the workpiece is provided on the upper surface of the base (1) and located at both ends of the guide rails (2); and two symmetrical linear motor modules (3) for respectively translating the two limiting assemblies (5) are provided on the upper surface of the base (1) and located between the two guide rails (2).

2. The aluminum alloy door and window cutting device according to claim 1, characterized in that: The cutting assembly (4) comprises a fixing seat (7) fixed at a middle position of the upper surfaces of the two guide rails (2), the upper surface of the fixing seat (7) being fixedly connected to two symmetrical U-shaped frames (8), the top ends of the two U-shaped frames (8) being fixedly connected to a shell body (10), and the side walls of the shell body (10) are both double-layer structures, the shell body (10) is slidably connected to a shell body (11) in the interlayer of the side walls of the shell body (10), and a protective cover (13) communicating with the interior of the shell body (11) is fixedly connected to the top outer wall of the shell body (11). A rotating shaft (20) is rotatably connected between the inner walls on both sides of the protective cover (13), a cutting blade (21) is provided on the circumferential outer wall of the rotating shaft (20), a driving motor (14) is fixedly connected to one side of the protective cover (13) to rotate the rotating shaft (20) in the axial direction, a telescopic component is provided between the fixed seat (7) and the second shell (11) to enable the second shell (11) to slide in the first shell (10), and avoidance openings (12) are provided on both sides of the first shell (10) and the second shell (11).

3. The aluminum alloy door and window cutting device according to claim 2, characterized in that: The telescopic assembly comprises a second fixing plate (16) fixedly connected to one side of the second shell (11) and one side of the fixing seat (7); an electric push rod (18) is fixedly connected between the two second fixing plates (16); a group of first fixing plates (15) are fixedly connected to the outer walls of both sides of the second shell (11) and the two sides of the fixing seat (7); each group has two first fixing plates; a telescopic rod (17) is fixedly connected between the two first fixing plates (15) at corresponding positions.

4. The aluminum alloy door and window cutting device according to claim 2, characterized in that: The lower surface of the housing (10) is fixedly connected to a chip removal pipe (9) which is in communication with the interior thereof, and support rollers (19) for supporting the bottom of the workpiece are symmetrically arranged on both sides of the upper opening of the chip removal pipe (9).

5. The aluminum alloy door and window cutting device according to claim 1, characterized in that: The limiting assembly (5) comprises two connecting seats (30) slidably connected to the two guide rails (2); a U-shaped plate (32) is fixedly connected to the upper surface of the connecting seat (30); both sides of the U-shaped plate (32) are slidably connected to L-shaped frames (33); the adjacent ends of the two L-shaped frames (33) are rotatably connected to clamping rollers (36); a second supporting roller (31) is provided between the U-shaped plates (32); and the second supporting roller (31) is provided below the clamping roller (36).

6. The aluminum alloy door and window cutting device according to claim 5, characterized in that: Fixed blocks (34) are fixedly connected at both ends of the top outer wall of the U-shaped plate (32), a semi-bidirectional screw rod (35) is rotatably connected between the two fixed blocks (34), and both ends of the semi-bidirectional screw rod (35) pass through opposite sides of the two fixed blocks (34) in sequence, and pass through one end of the two L-shaped frames (33) to be threadedly connected thereto, and both ends of the semi-bidirectional screw rod (35) are fixedly connected to a rotating disk.

7. The aluminum alloy door and window cutting device according to claim 1, characterized in that: The feeding assembly (6) comprises a mounting seat (23) fixedly connected to the upper surface of the base (1) and located at both ends of the guide rail (2); the upper end of the mounting seat (23) is fixedly connected to two side plates (24); two rotating rollers (22) are arranged between the two side plates (24); one side of one of the side plates (24) is fixedly connected to a driving motor 2 (29) for causing the rotating roller (22) to rotate axially; and an adjusting assembly for causing the other rotating roller (22) to move up and down is arranged between the two side plates (24).

8. The aluminum alloy door and window cutting device according to claim 7, characterized in that: The adjustment assembly comprises a limiting opening (25) formed on two side plates (24), wherein a slider (26) is slidably connected in the two limiting openings (25), a rotating roller (22) is rotatably connected between the two sliders (26), a threaded rod (27) is rotatably connected to the upper surfaces of the two sliders (26) via bearings, and the top end of the threaded rod (27) passes through the top of the side plate (24) and is threadedly connected thereto, and a stepped rubber ring (28) is bonded to the circumferential outer wall of the two rotating rollers (22).

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