Cutting device for aluminum alloy door and window processing

Abstract

The application discloses a cutting device for aluminum alloy door and window machining and belongs to the technical field of aluminum alloy door and window cutting machining. The cutting device mainly comprises a base and a movable cutting mechanism sliding on the base. The movable cutting mechanism comprises a support, a screw rod device rotatably connected to the upper portion of the support, a chain wheel one connected to one end of the screw rod device, a chain meshingly and drivably connected to the chain wheel one, two groups of cutting devices screw-connected to the screw rod device, a positioning plate connected to the lower portion of the support of the screw rod device, a plurality of holes uniformly distributed in the length direction of the positioning plate, a limiting plate connected to the support at the bottom of the positioning plate, and two racks connected to the middle position of the bottom of the support. The cutting device is rotated by cooperation of the cutting device and the screw rod device to realize cutting operation at different angles, such as 45 degrees, in addition to conventional 90-degree cutting, and the corresponding lifting plate can be synchronously lifted during cutting, so that the workers are protected during cutting.

Description

Technical Field

[0001] This invention belongs to the field of aluminum alloy door and window cutting and processing technology, and more specifically, it relates to a cutting device for aluminum alloy door and window processing. Background Technology

[0002] Cutting devices for aluminum alloy doors and windows are core equipment in the forming of door and window profiles, mainly used for cutting aluminum alloy profiles to a fixed length and angle. Traditional cutting devices mostly use manual feeding, and can only perform positioning and cutting on one aluminum profile at a time, which is slow. Although some semi-automatic equipment has automated feeding, the switching efficiency is low and it is difficult to adapt to the processing needs of multiple specifications of doors and windows.

[0003] Patent CN119566394B discloses a cutting device for aluminum alloy door and window processing, including a worktable and two disc cutting components disposed on the worktable. Through the cooperation of a first locking component and two second locking components, it provides support for the aluminum alloy profile blank. Simultaneously, by adjusting the distance between the two second locking components, it supports the acquisition of aluminum alloy profiles of the target length. With the addition of a pushing component, a height adjustment component, and a top pressing component, as the pushing component moves, it sequentially achieves clamping and positioning on both sides of the aluminum alloy profile blank, top limiting, and cutting. While this patent solves the problem of batch cutting of aluminum profiles, it can only perform right-angle cuts and cannot adapt to cutting operations at different angles. When cutting at 45-degree angles or other angles, it is necessary to change equipment and re-cut, which is very inconvenient.

[0004] To address the aforementioned technical problems, this application proposes a solution. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a cutting device for processing aluminum alloy doors and windows. The present invention enables the cutting device to rotate through the cooperation of the cutting device and the lead screw device to achieve cutting operations at different angles such as 45 degrees, in addition to the conventional 90-degree cutting. Furthermore, the corresponding lifting plate can be raised synchronously during cutting to protect the workers.

[0006] A cutting device for processing aluminum alloy doors and windows includes a base and a movable cutting mechanism that slides on the base. The movable cutting mechanism includes a bracket, a lead screw device rotatably connected to the upper part of the bracket, a sprocket fixedly connected to one end of the lead screw device, a chain meshing and drivingly connected to the sprocket, two sets of cutting devices screwed onto the lead screw device, a positioning plate fixedly connected to the lower bracket of the lead screw device, the positioning plate having multiple holes evenly distributed along its length, a limit plate fixedly connected to the bracket at the bottom of the positioning plate, two racks fixedly connected to the middle position of the bottom of the bracket, the racks being "L"-shaped with multiple teeth at their long ends, slide rails fixedly connected to both sides of the bottom of the bracket, a driving device fixedly connected to one end of the bracket, a sprocket two fixedly connected to the rotating end of the driving device, the sprocket two meshing and drivingly connected to the chain, and a telescopic device one fixedly connected to the middle of the same end of the bracket and the driving device.

[0007] Preferably, the cutting device includes a clamping and rotating device, which includes a housing. A rotating shaft is fixedly connected to one end of the outer side of the housing. Two symmetrically placed threaded half-shells are slidably connected inside the housing. The two threaded half-shells together form a threaded hole and are screwed to a lead screw device. A shaft is slidably connected around the two threaded half-shells. Both ends of the shaft are fixedly connected to the inside of the housing. Springs are nested on the outer sides of both ends of the shaft. One end of the spring abuts against the inside of the housing, and the other end abuts against the threaded half-shell. One end of the threaded half-shell passes through the housing and protrudes. The rotating shaft... An inner shaft is rotatably connected to the upper part of the rotating shaft. An outer shaft is slidably connected to the outer shaft. A positioning shaft is rotatably connected to the middle of the outer shaft. A positioning bracket is fixedly connected to one side of the positioning shaft. A positioning pin is movably connected to the upper part of the positioning bracket. An elastic device is provided between the positioning pin and the positioning bracket. The upper part of the positioning bracket protrudes between the positioning plate and the limiting plate, and the positioning pin is movably connected to a hole on the positioning plate. A motor is fixedly connected to one side of the bottom of the outer shaft. A cutter head is fixedly connected to the rotating end of the motor. A protective cover fixedly connected to the outer shaft is provided on the outer side of the upper half of the cutter head.

[0008] Preferably, the lead screw device includes a lead screw one rotatably connected to the bracket, a hexagonal prism fixedly connected to one end of the lead screw one, and a lead screw two slidably connected to the outside of the hexagonal prism.

[0009] Preferably, two collection boxes are fixedly connected to one side of the bottom of the base, and multiple rollers are rotatably connected to the upper part of the collection boxes. A lifting and fixing plate is slidably connected between the two collection boxes. A telescopic device two is fixedly connected to the base at the bottom of the lifting and fixing plate. The telescopic end of the telescopic device two passes through the base and is fixedly connected to the lifting and fixing plate. Slide rail grooves that cooperate and slide with slide rails are opened at both ends of the base along the length direction. Through holes are opened at both ends of the base along the length direction. The through holes communicate with the slide rail grooves. A limiting groove for installing the telescopic device one is provided in the middle of the base on the side away from the lifting and fixing plate.

[0010] Preferably, the lifting and fixing plate is L-shaped, and two limiting positions are fixedly connected to the base of the roller near the lifting and fixing plate, with one side of the limiting position flush with the inner side of the short side of the lifting and fixing plate.

[0011] Preferably, a ruler is fixedly connected to the base near the lifting plate, a lifting plate groove is fixedly connected to the bottom of the base on one side of the collection box, a lifting plate is slidably connected in the lifting plate groove, four sets of toothed grooves are opened on the side of the lifting plate facing the collection box, two sets of through grooves are opened in the middle of the lifting plate, and corresponding through grooves are opened on the lifting plate groove.

[0012] Preferably, a horizontal shaft is rotatably connected between the lifting plate groove and the collection box, and six gears are fixedly connected on the horizontal shaft. The four gears on both sides of the horizontal shaft are meshed with tooth grooves for transmission, and the two gears in the middle of the horizontal shaft are meshed with a rack for transmission.

[0013] Preferably, the lifting plate groove has through holes at positions corresponding to the two racks.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention can simultaneously cut two aluminum profiles of the same length by using two sets of cutting devices on a moving cutting mechanism, thus doubling the efficiency. Furthermore, through the cooperation between the cutting device and the lead screw device, the cutting device rotates to form an angle with the base, cutting aluminum profiles including those at 45 degrees, and can also cut two of the same length.

[0015] 2. In this invention, when the telescopic device drives the mobile cutting mechanism forward to cut aluminum profiles, it simultaneously drives the lifting plate to move upward from the bottom of the base. When the cutter head moves to the side of the aluminum profile, the lifting plate has been raised to a safe height. As the mobile cutting mechanism continues to move forward and the cutter head cuts the aluminum profile, the lifting plate is also continuously raised to prevent the cutter head from injuring the workers. This invention can raise the lifting plate to protect personnel from injury when the mobile cutting mechanism moves forward to cut aluminum profiles. It achieves two functions by using a telescopic device to drive the mobile cutting mechanism and the lifting plate in two directions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the specific structure of the moving cutting mechanism in this invention; Figure 3 A schematic diagram of the specific mechanism of the lead screw device; Figure 4 This is a schematic diagram of the overall structure of the cutting device; Figure 5 This is an exploded view of the overall structure of the cutting device; Figure 6 A schematic diagram of the specific structure of the clamping and rotating device; Figure 7 This is a schematic diagram of the fit between the threaded half-shell and the shaft. Figure 8 This is a schematic diagram of the specific structure of the base; Figure 9 This is a structural diagram of the base from another perspective; Figure 10 This is a schematic diagram of the side structure of the base; Figure 11 This is a schematic diagram of the lifting platform. Figure 12 This is a cross-sectional view of the overall structure of the present invention.

[0017] In the diagram, 1 is the moving cutting mechanism; 101 is the cutting device; 1011 is the clamping and rotating device; 1011A is the rotating shaft; 1011B is the outer casing; 1011C is the spring; 1011D is the shaft; 1011E is the threaded half-shell; 1012 is the inner shaft of the rotating shaft; 1013 is the outer shaft of the rotating shaft; 1014 is the positioning bracket; 1014A is the positioning shaft; 1014B is the positioning pin; 1015 is the protective cover; 1016 is the motor; 1017 is the cutter head; 102 is the bracket; 1021 is the slide rail; 1022 is the lead screw device; 1022A is the lead screw one; 1022B is the hexagonal prism; 1022C is the lead screw device; 1022A is the lead screw one; 1022B is the hexagonal prism; 1022C is the lead screw device. 1. Lead screw 2; 1023. Positioning plate; 1024. Limiting plate; 1025. Scale 1; 1026. Rack; 103. Sprocket 1; 104. Chain; 105. Sprocket 2; 106. Drive device; 107. Telescopic device 1; 2. Base; 202. Collection box; 203. Slide rail groove; 204. Lifting plate groove; 205. Lifting plate; 2051. Gear groove; 2052. Through groove; 206. Through hole; 207. Scale 2; 208. Limiting device; 209. Roller; 210. Lifting fixing plate; 211. Limiting groove; 212. Telescopic device 2; 213. Gear; 214. Horizontal shaft. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings: The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise explicitly specified and limited, the terms "setting," "installing," "connecting," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0019] like Figures 1 to 12 As shown, a cutting device for processing aluminum alloy doors and windows includes a base 2 and a movable cutting mechanism 1 that slides on the base 2. The movable cutting mechanism 1 can move back and forth to cut aluminum profiles. The movable cutting mechanism 1 includes a bracket 102, a lead screw device 1022 rotatably connected to the upper part of the bracket 102, a sprocket 103 fixedly connected to one end of the lead screw device 1022, a chain 104 meshing and drivingly connected to the sprocket 103, and two sets of cutting devices 101 screwed onto the lead screw device 1022. The two sets of cutting devices 101 can simultaneously cut one aluminum profile into two or three aluminum profiles of the same size. A positioning plate 1023 is fixedly connected to the lower bracket 102 of the lead screw device 1022. The positioning plate 1023 has multiple holes evenly distributed along its length. A limit plate 1024 is fixedly connected to the bracket 102 at the bottom of the positioning plate 1023. Two racks 1026 are fixedly connected to the middle position of the bottom of the bracket 102. The racks 1026 are L-shaped and have multiple teeth at their long ends. Slide rails 1021 are fixedly connected to both sides of the bottom of the bracket 102. A drive device 106 is fixedly connected to one end of the bracket 102. A sprocket 105 is fixedly connected to the rotating end of the drive device 106. The sprocket 105 meshes with the chain 104 for transmission. A telescopic device 107 is fixedly connected to the middle of the same end of the bracket 102 and the drive device 106.

[0020] like Figure 4 and Figure 5 As shown, the cutting device 101 includes a clamping and rotating device 1011, which includes a housing 1011B. A rotating shaft 1011A is fixedly connected to one end of the outer side of the housing 1011B. Two symmetrically placed threaded half-shells 1011E are slidably connected inside the housing 1011B. The two threaded half-shells 1011E together form a threaded hole and are screwed to a lead screw device 1022. A shaft 1011D is slidably connected around the two threaded half-shells 1011E. Both ends of the shaft 1011D are fixedly connected to the inside of the housing 1011B. Springs 1011C are nested around the outer sides of both ends of the shaft 1011D. One end of the spring 1011C abuts against the inside of the housing 1011B, and the other end abuts against the threaded half-shell 1011E. One end of the threaded half-shell 1011E passes through the housing 1011B and protrudes, as shown in the image. Figure 7As shown, pressing the protrusion towards the center separates the two threaded half-shells 1011E, facilitating movement on the lead screw device 1022. An inner shaft 1012 is rotatably connected to the rotating shaft 1011A, and an outer shaft 1013 is slidably connected to the outer shaft 1012. A positioning shaft 1014A is rotatably connected to the middle of the outer shaft 1013. A positioning bracket 1014 is fixedly connected to one side of the positioning shaft 1014A. A positioning pin 1014B is movably connected to the upper part of the positioning bracket 1014. An elastic device is provided between the positioning pin 1014B and the positioning bracket 1014. The upper protrusion of the positioning bracket 1014 is located between the positioning plate 1023 and the limiting plate 1024, and the positioning pin 1014B is movably connected to a hole on the positioning plate 1023. The positioning is fixed and positioned through the cooperation between the positioning pin 1014B and the hole on the positioning plate 1023. A motor 1016 is fixedly connected to one side of the bottom of the outer shaft 1013. A cutter head 1017 is fixedly connected to the rotating end of the motor 1016. A protective cover 1015 is provided on the outer side of the upper half of the cutter head 1017 and is fixedly connected to the outer shaft 1013 to prevent cutting debris from being scattered from above.

[0021] like Figure 3 As shown, the lead screw device 1022 includes a lead screw 1022A rotatably connected to the bracket 102. One end of the lead screw 1022A is fixedly connected to a hexagonal prism 1022B, and a lead screw 2 1022C is slidably connected to the outside of the hexagonal prism 1022B. The advantage of this design is that when the lead screw 1022A and lead screw 2 1022C are assembled together, they can be designed with the same helical direction. This way, when the lead screw device 1022 rotates, the cutting device 101 can rotate at the same angle and perform cutting to obtain the desired aluminum profile. Alternatively, the lead screw 2 1022C can be reversed so that the helical directions of the lead screw 1022A and lead screw 2 1022C are opposite. This way, when the lead screw device 1022 rotates, the two sets of cutting devices 101 can tilt in opposite directions.

[0022] like Figure 8As shown, two collection boxes 202 are fixedly connected to one side of the bottom of the base 2. The function of the collection boxes 202 is to collect the debris cut from the aluminum profiles, which then scatters everywhere. Multiple rollers 209 are rotatably connected to the upper part of the collection boxes 202, facilitating the movement of the aluminum profiles on the rollers 209. A lifting and fixing plate 210 is slidably connected between the two collection boxes 202. A telescopic device 212 is fixedly connected to the base 2 at the bottom of the lifting and fixing plate 210. The telescopic end of the telescopic device 212 passes through the base 2 and is fixedly connected to the lifting and fixing plate 210. The lifting and fixing plate 210 moves up and down under the action of the telescopic device 212 to clamp the aluminum profiles. Because it can move up and down, it can accommodate aluminum profiles of different heights for clamping operations. The base 2 has slide rail grooves 203 at both ends along its length, which slide and connect slidably with the slide rail 1021. Through holes 206 are also provided at both ends along the length of the base 2, communicating with the slide rail grooves 203. The main function of the through holes 206 is to allow debris or other impurities to enter the slide rail grooves 203 during the movement of the slide rail 1021. The through holes 206 can push these impurities out of the slide rail grooves 203 during the movement of the slide rail 1021. A limiting groove 211 for installing the telescopic device 107 is provided in the middle of the base 2 on the side away from the lifting fixing plate 210. The lifting fixing plate 210 is L-shaped. Two limiting devices 208 are fixedly connected to the base 2 at the end of the roller 209 closest to the lifting fixing plate 210. One side of the limiting device 208 is flush with the inner side of the short side of the lifting fixing plate 210. The function of the limiting devices 208 is to prevent the aluminum profile from moving freely during cutting. A ruler 207 is fixedly connected to the base 2 near the lifting plate 210. A lifting plate groove 204 is fixedly connected to the bottom of the base 2 on one side of the collection box 202. A lifting plate 205 is slidably connected in the lifting plate groove 204. The lifting plate 205 has four sets of toothed grooves 2051 on the side facing the collection box 202, and two sets of through grooves 2052 in the middle of the lifting plate 205. Correspondingly, through grooves are opened on the lifting plate groove 204. The function of the lifting plate 205 is to raise and lower the lifting plate 205 when the moving cutting mechanism 1 is moving. When the cutter head 1017 cuts aluminum profiles, the lifting plate 205 is raised to a safe height. On the one hand, because the lifting plate 205 is raised, the staff cannot touch the aluminum profile, avoiding staff violations and accidents during cutting. On the other hand, the lifting plate 205 can prevent the cutting debris from scattering everywhere.

[0023] like Figure 10As shown, a horizontal shaft 214 is rotatably connected between the lifting plate slot 204 and the collection box 202. Six gears 213 are fixedly connected to the horizontal shaft 214. Four gears 213 on both sides of the horizontal shaft 214 mesh with the gear groove 2051 for transmission, and the two gears 213 in the middle of the horizontal shaft 214 mesh with the rack 1026 for transmission. Through holes are opened at corresponding positions of the lifting plate slot 204 and the two racks 1026. The two gears 213 in the middle drive the horizontal shaft 214, which in turn drives the four gears 213 on both sides, causing the lifting plate 205 to rise and fall. The through holes on the lifting plate slot 204 and the through grooves 2052 on the lifting plate 205 are all spaces left to facilitate the lateral movement of the rack 1026.

[0024] Those skilled in the art can use existing technologies they possess, such as installing appropriate mechanical limit switches or photoelectric sensors, to limit the specified positions of each actuator during the following operation process; to achieve automated operation, the present invention can use numerical control technology or PLC to control the actions of each actuator.

[0025] Working process: The present invention uses two scales 1025 and 207. By pressing the two protrusions on the threaded half shell 1011E, the threaded half shell 1011E, which was originally squeezed by the spring 1011C, is loosened from the screw connection between the threaded half shell 1011E and the lead screw device 1022. Then, the positioning pin 1014B is pressed, which loosens the positioning pin 1014B from the hole on the positioning bracket 1014. The cutting device 101 is moved according to the required cutting length. When the distance is reached, the positioning pin 1014B and the threaded half shell 1011E are loosened in sequence for fixation. At this time, the cutter head 1017 is perpendicular to the base 2.

[0026] The aluminum profile to be processed is placed on roller 209. Telescopic device 212 drives the lifting and fixing plate 210 to rise, placing the aluminum profile below the lifting and fixing plate 210. The lifting and fixing plate 210 descends to clamp and fix the aluminum profile, with one side of the aluminum profile being limited and held in place. Telescopic device 107 is activated, pushing the entire mobile cutting mechanism 1 forward. Simultaneously, the rack 1026 at the bottom of the base 2 meshes with the two sets of gears 213 in the middle and rotates. When the gears 213 rotate, they drive the horizontal shaft 214 to rotate. The other four gears 213 on the horizontal shaft 214 drive the lifting plate 205 to rotate. When the cutter head 1017 on the mobile cutting mechanism 1 moves to a point where it is about to contact the aluminum profile, the lifting plate 205 moves to a safe height to prevent the cutting debris from injuring the workers. Then, the cutter head 1017 continues to move forward to cut the aluminum profile. After cutting is completed, telescopic device 107 drives the mobile cutting mechanism 1 to move backward, and the lifting plate 205 moves downward simultaneously. The lifting plate 205 stops moving when it is flush with the upper surface of the base 2.

[0027] When cutting at 45 degrees or other angles, simply rotate the drive device 106 to rotate the sprocket 105, which in turn drives the chain 104, causing the entire lead screw device 1022 to rotate. This moves the clamping rotating device 1011, causing the cutter head 1017 to shift. When the desired angle is reached, the drive device 106 stops moving. Then, according to the readings on the scale 207 and scale 1025, the clamping rotating device and cutting device 101 can be moved. (It is worth noting that when cutting at 45 degrees or other angles, the height of the shim on the original roller 209 needs to be raised. This is because the cutter head 1017 should be offset so that it is originally flush with the base 2. After offsetting, the cutter head 1017 moves upward.) Continuous cutting operations can simultaneously cut two required aluminum profiles, doubling efficiency. Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cutting device for processing aluminum alloy doors and windows, comprising a base (2) and a movable cutting mechanism (1) sliding on the base (2), characterized in that: The mobile cutting mechanism (1) includes a bracket (102). A lead screw device (1022) is rotatably connected to the upper part of the bracket (102). A sprocket (103) is fixedly connected to one end of the lead screw device (1022). A chain (104) is meshed and driven on the sprocket (103). Two sets of cutting devices (101) are screwed onto the lead screw device (1022). A positioning plate (1023) is fixedly connected to the lower bracket (102) of the lead screw device (1022). The positioning plate (1023) has multiple holes evenly distributed along its length. A limit plate (1024) is fixedly connected to the bracket (102) at the bottom of the positioning plate (1023). The middle position of the bottom of the bracket (102) is fixed. Two racks (1026) are connected, the racks (1026) are "L" shaped, and the long end of the racks (1026) has multiple teeth. Slide rails (1021) are fixedly connected to both sides of the bottom of the bracket (102). A drive device (106) is fixedly connected to one end of the bracket (102). A sprocket (105) is fixedly connected to the rotating end of the drive device (106). The sprocket (105) meshes with the chain (104) for transmission. A telescopic device (107) is fixedly connected between the bracket (102) and the drive device (106) at the same end. The cutting device (101) includes a clamping and rotating device (1011), which includes a housing (1011B). A rotating shaft (1011A) is fixedly connected to one end of the outer shell (1011B). Two symmetrically placed threaded half-shells (1011E) are slidably connected inside the outer shell (1011B). The two threaded half-shells (1011E) together form a threaded hole and are screwed to a lead screw device (1022). A shaft (1011D) is slidably connected around the two threaded half-shells (1011E). Both ends of the shaft (1011D) are fixedly connected to the inside of the outer shell (1011B). Springs (1011C) are nested around the outer sides of both ends of the shaft (1011D). One end of the spring (1011C) abuts against the inside of the outer shell (1011B), and the other end abuts against the threaded half-shell (1011E). One end of the threaded half-shell (1011E) passes through the outer shell (1011B) and protrudes. An inner shaft (1012) is rotatably connected to the rotating shaft (1011A). An outer shaft (1013) is slidably connected to the outer shaft (1012). A positioning shaft (1014A) is rotatably connected to the middle of the outer shaft (1013). A positioning bracket (1014) is fixedly connected to one side of the positioning shaft (1014A). A positioning pin (1014B) is movably connected to the upper part of the positioning bracket (1014). An elastic device is provided between the positioning pin (1014B) and the positioning bracket (1014). The upper protrusion of the positioning bracket (1014) is located between the positioning plate (1023) and the limiting plate (1024).Furthermore, the positioning pin (1014B) is movably connected to the hole on the positioning plate (1023). A motor (1016) is fixedly connected to one side of the bottom of the outer shaft (1013). A cutter head (1017) is fixedly connected to the rotating end of the motor (1016). A protective cover (1015) is provided on the outer side of the upper half of the cutter head (1017) and is fixedly connected to the outer shaft (1013).

2. The cutting device for processing aluminum alloy doors and windows according to claim 1, characterized in that: The lead screw device (1022) includes a lead screw one (1022A) rotatably connected to the bracket (102), a hexagonal prism (1022B) fixedly connected to one end of the lead screw one (1022A), and a lead screw two (1022C) slidably connected to the outside of the hexagonal prism (1022B).

3. The cutting device for processing aluminum alloy doors and windows according to claim 1, characterized in that: Two collection boxes (202) are fixedly connected to one side of the bottom of the base (2). Multiple rollers (209) are rotatably connected to the upper part of the collection box (202). A lifting fixing plate (210) is slidably connected between the two collection boxes (202). A telescopic device (212) is fixedly connected to the base (2) at the bottom of the lifting fixing plate (210). The telescopic end of the telescopic device (212) passes through the base (2) and is fixedly connected to the lifting fixing plate (210). The base (2) has slide rail grooves (203) at both ends of the length direction that are slidably connected to the slide rail (1021). The base (2) has through holes (206) at both ends of the length direction that are connected to the slide rail grooves (203). A limiting groove (211) for installing the telescopic device (107) is provided in the middle of the base (2) away from the lifting fixing plate (210).

4. The cutting device for processing aluminum alloy doors and windows according to claim 3, characterized in that: The lifting and fixing plate (210) is L-shaped. The roller (209) is fixedly connected to the base (2) at one end of the lifting and fixing plate (210) with two limiters (208). One side of the limiters (208) is flush with the inner side of the short side of the lifting and fixing plate (210).

5. A cutting device for processing aluminum alloy doors and windows according to claim 3, characterized in that: A ruler (207) is fixedly connected to the base (2) on the side near the lifting plate (210). A lifting plate groove (204) is fixedly connected to the bottom of the base (2) on the side of the collection box (202). A lifting plate (205) is slidably connected in the lifting plate groove (204). The lifting plate (205) has four sets of toothed grooves (2051) on the side facing the collection box (202). Two sets of through grooves (2052) are opened in the middle of the lifting plate (205). Correspondingly, a through groove is opened on the lifting plate groove (204).

6. The cutting device for processing aluminum alloy doors and windows according to claim 5, characterized in that: The lifting plate groove (204) and the collection box (202) are rotatably connected by a horizontal shaft (214). Six gears (213) are fixedly connected on the horizontal shaft (214). The four gears (213) on both sides of the horizontal shaft (214) are meshed with the tooth groove (2051) for transmission. The two gears (213) in the middle of the horizontal shaft (214) are meshed with the rack (1026) for transmission.

7. A cutting device for processing aluminum alloy doors and windows according to claim 6, characterized in that: The lifting plate groove (204) has through holes at corresponding positions to the two racks (1026).

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