Aluminum alloy plate punching device for constructional engineering

Abstract

The invention discloses an aluminum alloy plate punching device for constructional engineering, and relates to the technical field of plate punching. The device comprises an operation table, a rack is fixedly mounted on the upper surface of the operation table, a lifting motor is fixedly mounted on the upper surface of the rack, two supporting strips are slidably mounted on the upper surface of the operation table, upper clamping blocks are slidably mounted at the ends, close to the rack, of the two supporting strips, and lower clamping blocks are slidably mounted at the ends, away from the rack, of the two supporting strips; through the arrangement of the operation table, the supporting strips, the lower clamping blocks, the threaded rods, the upper clamping blocks, the fixing blocks, the clamping plates and the threaded blocks, a plate can slide in the four horizontal directions, operation is simplified, the working efficiency is improved, and through the arrangement of the lower clamping blocks, the upper clamping blocks and the clamping plates, the machining efficiency is improved. And the clamping angles of the clamping plates on the two lower clamping blocks and the two upper clamping blocks can be automatically adjusted according to the contact surfaces of the contacted plates, so that the plates in irregular shapes are fixed.

Description

Technical Field

[0001] The present invention relates to the technical field of plate punching, and specifically relates to an aluminum alloy plate punching device for construction engineering. Background Art

[0002] The construction industry is an industry centered around the design, construction, decoration, and management of buildings. In construction engineering, various tools and equipment are used for assistance, and a drilling device is one of them. In construction engineering, it is necessary to punch holes in plates to fix materials through the holes. Therefore, the drilling device is indispensable in construction engineering.

[0003] A patent with the patent publication number CN217121837U discloses a plate punching device for construction engineering, which relates to the technical field of plate punching. The patent includes an operating table and a connecting seat arranged above it horizontally. A driving mechanism for driving the connecting seat to move back and forth vertically is arranged on the top of the operating table. It also includes a plurality of drill bits arranged at the bottom of the connecting seat in sequence along the length direction of the connecting seat with adjustable spacing, and a bearing seat arranged on the top of the operating table corresponding to the number and position of the drill bits. A drilling hole is opened on the top of the bearing seat. In this patent, the plate is first placed on a plurality of bearing seats, and then the driving mechanism is used to drive the plurality of drill bits on the connecting seat to move back and forth vertically at the same time. The drill bits pass through the plate and enter the drilling holes, achieving the purpose of punching multiple holes in the plate simultaneously. Compared with traditional punching equipment, the punching efficiency has been improved.

[0004] However, the current plate punching devices for construction engineering have the following problems: After the fixture of the plate punching device for construction engineering fixes the plate, the flexibility of the plate is poor. When it is necessary to change some punching positions, it is necessary to manually disassemble and refix the plate, which is rather troublesome to operate. Moreover, the fixture has a poor fixing effect on irregular plates, reducing the work efficiency. Therefore, we have proposed an aluminum alloy plate punching device for construction engineering. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an aluminum alloy plate punching device for construction engineering, which solves the problems raised in the above background art.

[0006] To achieve the above object, the present invention is realized by the following technical solutions: An aluminum alloy plate punching device for construction engineering includes an operating table. A frame is fixedly installed on the upper surface of the operating table. A lifting motor is fixedly installed on the upper surface of the frame. The output end of the lifting motor is fixedly connected with a threaded lifting rod. A threaded connection block is threadedly connected to the outer wall of the threaded lifting rod. A punching motor is fixedly installed on one side of the threaded connection block away from the frame. The output end of the punching motor is rotatably connected with a connector. A drill bit is inserted into the bottom surface of the connector. Two support bars are slidably installed on the upper surface of the operating table. An upper clamping block is slidably installed at one end of the two support bars close to the frame. A lower clamping block is slidably installed at one end of the two support bars away from the frame. A threaded block is fixedly installed on one side of the lower clamping block away from the frame. Fixed blocks are fixedly installed on one side of the two upper clamping blocks away from the frame. A threaded rod is rotatably installed on the front side of the two fixed blocks. The outer wall of the threaded rod is threadedly connected with the threaded block. By rotating the two threaded rods, the two lower clamping blocks and the two upper clamping blocks are adjusted to be slightly wider than the width of the plate to be processed. The plate to be processed is placed between the two lower clamping blocks and the two upper clamping blocks. By rotating the two threaded rods, the two lower clamping blocks and the two upper clamping blocks are clamped, so as to realize the fixation of the plate to be processed. When the plate is fixed, since the two lower clamping blocks and the two upper clamping blocks can slide on the two support bars, and the two support bars can slide on the upper surface of the operating table.

[0007] According to the above technical solution, two clamping plates 11 are hinged on the upper surfaces of the two lower clamping blocks 5 and the two upper clamping blocks 7. The clamping plates 11 on the upper surfaces of the two lower clamping blocks 5 and the clamping plates 11 on the upper surfaces of the two upper clamping blocks 7 are symmetrically arranged. When the plate to be processed is irregularly shaped, the plate to be processed is fixed by the same operation process as above. The clamping plates on the two lower clamping blocks and the two upper clamping blocks will automatically adjust the clamping angle according to the contact surface of the plate in contact.

[0008] According to the above technical solution, a splash-proof device is provided on the outer wall of the frame. The splash-proof device includes two cross bars, two connecting rods, two connecting columns, and a splash-proof cover. The two cross bars are respectively hinged below the outer walls on both sides of the frame. The two connecting columns are respectively fixedly installed on both sides of the threaded connection block. One end of each of the two connecting rods is respectively hinged to one end of the two connecting columns away from the threaded connection block, and the other end of each of the two connecting rods is respectively hinged to the middle of the two cross bars. The splash-proof cover 84 is fixedly installed between the two cross bars 81. After confirming that the plate to be processed is fixed, start the lifting motor. The lifting motor drives the joint, and the joint drives the drill bit to rotate. Start the punching motor. The threaded lifting rod rotates to drive the threaded connection block to descend. The threaded connection block drives the punching motor to descend. The punching motor drives the joint to descend, and the joint drives the drill bit to descend, so that the drill bit performs a punching operation on the plate to be processed. While the threaded connection block descends, the two connecting rods of the threaded connection block descend, the two connecting rods drive the cross bars to descend, and the two cross bars drive the splash-proof cover to descend. When the punching operation is completed, the lifting motor reverses, the threaded rod drives the threaded connection block to rise, the threaded connection block drives the drill bit to rise, and at the same time the threaded connection block drives the splash-proof cover to rise, thereby realizing that while the punching operation is being performed, the splash-proof cover will wrap around the periphery of the drill bit.

[0009] According to the above technical solution, the splash-proof device further includes; two striking plates, two convex blocks, and two convex ball columns. The two striking plates are installed on the inner walls on both sides of the splash-proof cover through springs. The two convex blocks are respectively fixedly installed in the middle of the surfaces of the two striking plates away from the splash-proof cover. The two convex ball columns are both fixedly installed on the outer wall of the joint. A number of striking blocks are provided on the surface of the striking plate close to the splash-proof cover. The convex block is located on the movement track of the convex ball column. When the joint rotates, the joint drives the two convex ball columns to rotate. During the rotation of the convex ball column, the end of the convex ball column will contact the convex block, thereby pushing the convex block towards the splash-proof cover. The convex block drives the striking plate to move towards the splash-proof cover. When the end of the convex ball column does not contact the convex block, the convex block and the striking plate are reset by the elastic force of the spring. During the continuous movement of the striking plate, the striking blocks on the surface of the striking plate will continuously strike the surface of the splash-proof cover, causing the splash-proof cover to vibrate.

[0010] According to the above technical solution, a cooling device is provided on the outer wall of the frame. The cooling device includes a pressure rod, a start-stop device, a water tank, a water pipe, and a nozzle. The pressure rod is fixedly connected between two cross bars. The start-stop device is fixedly installed on the upper surface of the operating table. The upper surface of the water tank is fixedly connected below the start-stop device. One end of the water pipe is fixedly connected to the upper surface of the water tank. The water pipe penetrates through the upper surface of the operating table. The nozzle is fixedly connected to the other end of the water pipe. The start-stop device is located below the pressure rod and on the movement trajectory of the pressure rod. An installation chamber is provided at the position where the water pipe is connected to the nozzle. During the downward movement of the two cross bars, the two cross bars drive the pressure rod to descend. When the pressure rod moves downward and contacts the start-stop device, the start-stop device is activated by the downward pressure of the pressure rod. The water tank transports water to the nozzle through the water pipe, and the nozzle sprays water onto the working drill bit.

[0011] According to the above technical solution, the cooling device further includes a transmission shaft, a water wheel, and a fan. The transmission shaft is rotatably installed inside the installation chamber of the water pipe. One end of the transmission shaft away from the start-stop device penetrates through the outer wall of the installation chamber of the water pipe. The water wheel is fixedly installed on the outer wall of the transmission shaft. The water wheel is located on the movement trajectory of the water flow inside the water pipe. The fan is fixedly installed at the end of the transmission shaft away from the start-stop device. An installation chamber is provided at the position where the water pipe is connected to the nozzle. When water passes through the water pipe, it drives the water wheel to rotate. The water wheel drives the fan to rotate through the transmission shaft, so that the fan blows the water splashes stirred up by the rotation of the drill bit forward by rotation.

[0012] The present invention provides an aluminum alloy plate punching device for construction engineering. It has the following beneficial effects: (1) Through the settings of the operating table, frame, lifting motor, support bars, lower clamping blocks, threaded rods, upper clamping blocks, fixing blocks, clamping plates, threaded blocks, threaded lifting rods, threaded connection blocks, punching motor, connectors, and drill bits in the present invention, after the plate is fixed by the lower clamping blocks and the upper clamping blocks, since the two lower clamping blocks and the two upper clamping blocks can slide on the two support bars, and the two support bars can slide on the upper surface of the operating table, the plate can perform four horizontal slides. When the staff needs to change the punching position, they can directly move the plate, which simplifies the operation and improves the work efficiency. Through the settings of the lower clamping blocks, upper clamping blocks, and clamping plates, the clamping plates on the two lower clamping blocks and the two upper clamping blocks will automatically adjust the clamping angle according to the contact surface of the plate they touch, thus realizing the fixation of plates with irregular shapes.

[0013] (2)By providing the cross bar, connecting rod, connecting column, and splash guard, the splash guard will wrap around the drill bit during the drilling operation, preventing debris from splashing around, and avoiding the need for workers to frequently clean the surrounding waste debris, which affects work efficiency. By providing the striking plate, convex block, and convex ball column, the splash guard will vibrate to shake off the debris adhering to the inner wall of the splash guard, avoiding the need for workers to frequently clean the inner wall of the splash guard, thus achieving the effect of saving manpower and improving work efficiency.

[0014] (3)By providing the pressure rod, start-stop device, water tank, water pipe, and nozzle, the nozzle sprays water onto the working drill bit, thus achieving the effect of cooling the working drill bit, avoiding the drill bit from overheating due to continuous work, which affects the drilling effect and service life. By providing the transmission shaft, water wheel, and fan, the fan rotates to blow the water splashes stirred up by the rotation of the drill bit forward. When the water splashes contact the debris in the air, the smaller-sized debris can be captured, thus achieving a certain dust reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the whole of the present invention; Figure 2 is a schematic diagram of the partial structure of the present invention; Figure 3 is of the present invention Figure 2 enlarged schematic diagram at A; Figure 4 is a schematic diagram of the structure at the frame of the present invention; Figure 5 is a schematic diagram of the splash-proof device of the present invention; Figure 6 is a schematic diagram of the partial structure of the splash-proof device of the present invention; Figure 7 is a schematic diagram of the cooling device of the present invention; Figure 8 is a schematic diagram of the partial structure of the cooling device of the present invention.

[0016] In the figure: 1, operating table; 2, frame; 3, lifting motor; 4, support bar; 5, lower clamp block; 6, threaded rod; 7, upper clamp block; 8, splash-proof device; 81, cross bar; 82, connecting rod; 83, connecting column; 84, splash guard; 85, striking plate; 86, convex block; 87, convex ball column; 9, cooling device; 91, pressure rod; 92, start-stop device; 93, water tank; 94, water pipe; 95, nozzle; 96, transmission shaft; 97, water wheel; 98, fan; 10, fixing block; 11, clamping plate; 12, threaded block; 13, threaded lifting rod; 14, threaded connection block; 15, drilling motor; 16, joint; 17, drill bit. DETAILED DESCRIPTION OF THE INVENTION

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0018] Please refer to Figures 1-8 In an embodiment of the present invention: An aluminum alloy plate punching device for construction engineering includes an operating table 1. A frame 2 is fixedly installed on the upper surface of the operating table 1. A lifting motor 3 is fixedly installed on the upper surface of the frame 2. The output end of the lifting motor 3 is fixedly connected to a threaded lifting rod 13. A threaded connection block 14 is threadedly connected to the outer wall of the threaded lifting rod 13. A punching motor 15 is fixedly installed on the side of the threaded connection block 14 away from the frame 2. The output end of the punching motor 15 is rotatably connected to a joint 16. A drill bit 17 is inserted into the bottom surface of the joint 16. Two support bars 4 are slidably installed on the upper surface of the operating table 1. An upper clamping block 7 is slidably installed at one end of the two support bars 4 close to the frame 2. A lower clamping block 5 is slidably installed at one end of the two support bars 4 away from the frame 2. A threaded block 12 is fixedly installed on the side of the lower clamping block 5 away from the frame 2. Fixed blocks 10 are fixedly installed on the side of the two upper clamping blocks 7 away from the frame 2. A threaded rod 6 is rotatably installed on the front side of the two fixed blocks 10. The outer wall of the threaded rod 6 is threadedly connected to the threaded block 12. Through the above structural settings, the plate can slide in four horizontal directions. When the staff needs to change the punching position, they can directly move the plate, which simplifies the operation and improves work efficiency. Two clamping plates 11 are hinged on the upper surfaces of the two lower clamping blocks 5 and the two upper clamping blocks 7. The clamping plates 11 on the upper surfaces of the two lower clamping blocks 5 and the clamping plates 11 on the upper surfaces of the two upper clamping blocks 7 are axially symmetrically arranged. Through the above structural settings, the clamping plates 11 will automatically adjust the clamping angle according to the contact surface of the plate in contact, thus realizing the fixation of plates with irregular shapes.

[0019] During use, by rotating the two threaded rods 6, the two lower clamping blocks 5 and the two upper clamping blocks 7 are adjusted to be slightly wider than the width of the plate to be processed. The plate to be processed is placed between the two lower clamping blocks 5 and the two upper clamping blocks 7. By rotating the two threaded rods 6, the two lower clamping blocks 5 and the two upper clamping blocks 7 are clamped, thus realizing the fixation of the plate to be processed. After the plate is fixed, since the two lower clamping blocks 5 and the two upper clamping blocks 7 can slide on the two support bars 4, and the two support bars 4 can slide on the upper surface of the operating table 1, the plate can slide in four horizontal directions. When the staff needs to change the punching position, they can directly move the plate, which simplifies the operation and improves work efficiency; when the plate to be processed has an irregular shape, the plate to be processed is fixed using the same operation process as above. The clamping plates 11 on the two lower clamping blocks 5 and the two upper clamping blocks 7 will automatically adjust the clamping angle according to the contact surface of the plate in contact, thus realizing the fixation of plates with irregular shapes.

[0020] Please refer to Figures 1-8 , on the basis of the above embodiments, in another embodiment of the present invention, a splash-proof device 8 is provided on the outer wall of the frame 2. The splash-proof device 8 includes two cross bars 81, two connecting rods 82, two connecting columns 83, and a splash-proof cover 84. The two cross bars 81 are respectively hinged below the outer walls on both sides of the frame 2. The two connecting columns 83 are respectively fixedly installed on both sides of the threaded connection block 14. One ends of the two connecting rods 82 are respectively hinged to the ends of the two connecting columns 83 away from the threaded connection block 14. The other ends of the two connecting rods 82 are respectively hinged to the middle parts of the two cross bars 81. The splash-proof cover 84 is fixedly installed between the two cross bars 81. Through the setting of the above structure, the splash-proof cover 84 will wrap around the periphery of the drill bit 17 during the drilling operation, preventing debris from splashing around, and avoiding the need for workers to often clean the surrounding waste chips, which affects the work efficiency. The splash-proof device 8 further includes; two striking plates 85, two convex blocks 86, and two convex ball columns 87. The two striking plates 85 are installed on the inner walls on both sides of the splash-proof cover 84 through springs. The two convex blocks 86 are respectively fixedly installed in the middle of the sides of the two striking plates 85 away from the splash-proof cover 84. The two convex ball columns 87 are both fixedly installed on the outer wall of the joint 16. A number of striking blocks are provided on the side of the striking plate 85 close to the splash-proof cover 84. The convex block 86 is located on the movement track of the convex ball column 87. Through the setting of the above structure, the splash-proof cover 84 generates vibrations to shake off the debris attached to the inner wall of the splash-proof cover 84, avoiding the need for workers to often clean the inner wall of the splash-proof cover 84, achieving the effect of saving manpower and improving work efficiency.

[0021] A cooling device 9 is provided on the outer wall of the frame 2. The cooling device 9 includes a pressure rod 91, a start-stop device 92, a water tank 93, a water pipe 94, and a nozzle 95. The pressure rod 91 is fixedly connected between two cross bars 81. The start-stop device 92 is fixedly installed on the upper surface of the operating table 1. The upper surface of the water tank 93 is fixedly connected below the start-stop device 92. One end of the water pipe 94 is fixedly connected to the upper surface of the water tank 93. The water pipe 94 penetrates through the upper surface of the operating table 1. The nozzle 95 is fixedly connected to the other end of the water pipe 94. The start-stop device 92 is located below the pressure rod 91 and on the movement track of the pressure rod 91. An installation chamber is provided at the position where the water pipe 94 is connected to the nozzle 95. Through the above structure, the water tank 93 transports water to the nozzle 95 through the water pipe 94, and the nozzle 95 sprays water onto the working drill bit 17, thereby achieving the effect of cooling the working drill bit 17, avoiding the drill bit 17 from overheating due to continuous work, which affects the drilling effect and service life. The cooling device 9 further includes a transmission shaft 96, a water wheel 97, and a fan 98. The transmission shaft 96 is rotatably installed inside the installation chamber of the water pipe 94. One end of the transmission shaft 96 away from the start-stop device 92 penetrates through the outer wall of the installation chamber of the water pipe 94. The water wheel 97 is fixedly installed on the outer wall of the transmission shaft 96. The water wheel 97 is located on the movement track of the water flow in the water pipe 94. The fan 98 is fixedly installed at the end of the transmission shaft 96 away from the start-stop device 92. An installation chamber is provided at the position where the water pipe 94 is connected to the nozzle 95. Through the above structure, the fan 98 blows the water splashes stirred up when the drill bit 17 rotates forward. When the water splashes contact the debris in the air, the smaller-sized debris can be captured, thereby achieving a certain dust reduction effect.

[0022] During use, after confirming that the plate to be processed is fixed, start the lifting motor 3. The lifting motor 3 drives the joint 16, and the joint 16 drives the drill bit 17 to rotate. Start the drilling motor 15. The threaded lifting rod 13 rotates to drive the threaded connection block 14 to descend. The threaded connection block 14 drives the drilling motor 15 to descend. The drilling motor 15 drives the joint 16 to descend. The joint 16 drives the drill bit 17 to descend, so that the drill bit 17 performs a drilling operation on the plate to be processed. While the threaded connection block 14 is descending, the two connecting rods 82 of the threaded connection block 14 descend. The two connecting rods 82 drive the cross bar 81 to descend. The two cross bars 81 drive the splash guard 84 to descend. When the drilling operation is completed, the lifting motor 3 rotates in reverse. The threaded lifting rod 13 drives the threaded connection block 14 to ascend. The threaded connection block 14 drives the drill bit 17 to ascend. At the same time, the threaded connection block 14 drives the splash guard 84 to ascend. Thus, while the drilling operation is being performed, the splash guard 84 will wrap around the periphery of the drill bit 17, preventing debris from splashing to the surroundings and avoiding the need for staff to frequently clean the surrounding waste debris, which affects work efficiency. When the joint 16 is rotating, the joint 16 drives the two convex ball columns 87 to rotate. During the rotation of the convex ball columns 87, the end of the convex ball column 87 will contact the convex block 86, thereby pushing the convex block 86 towards the splash guard 84. The convex block 86 drives the striking plate 85 to move towards the splash guard 84. When the end of the convex ball column 87 does not contact the convex block 86, the convex block 86 and the striking plate 85 are reset by the elastic force of the spring. During the continuous movement of the striking plate 85, the striking blocks on the surface of the striking plate 85 will continuously strike the surface of the splash guard 84, causing the splash guard 84 to vibrate and shake off the debris adhering to the inner wall of the splash guard 84, eliminating the need for staff to clean the inner wall of the splash guard 84, saving manpower and improving work efficiency.

[0023] During the descent of the two cross bars 81, the two cross bars 81 drive the pressure rod 91 to descend. The pressure rod 91 moves downward and contacts the start-stop device 92. The start-stop device 92 is activated by the downward pressure of the pressure rod 91. The water tank 93 transports water through the water pipe 94 to the nozzle 95. The nozzle 95 sprays water onto the working drill bit 17, thus achieving the effect of cooling the working drill bit 17 and avoiding the drill bit 17 overheating due to continuous work, which affects the drilling effect and service life. When the water passes through the water pipe 94, it drives the water wheel 97 to rotate. The water wheel 97 drives the fan 98 to rotate through the transmission shaft 96, so that the fan 98 blows the water splashes stirred up by the rotation of the drill bit 17 forward through rotation. When the water splashes contact the debris in the air, they can capture the debris with smaller particle sizes, thus achieving a certain dust reduction effect.

[0024] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered within the protection scope of the present invention.

Claims

1. An aluminum alloy sheet punching device for construction engineering, comprising an operating table (1), characterized in that: On the upper surface of the operation table (1), a frame (2) is fixedly installed. On the upper surface of the frame (2), a lifting motor (3) is fixedly installed. The output end of the lifting motor (3) is fixedly connected to a threaded lifting rod (13). The outer wall of the threaded lifting rod (13) is threadedly connected to a threaded connection block (14). On the side of the threaded connection block (14) away from the frame (2), a drilling motor (15) is fixedly installed. The output end of the drilling motor (15) is rotatably connected to a joint (16). The bottom surface of the joint (16) is plugged with a drill bit (17). On the upper surface of the operation table (1), two support bars (4) are slidably installed. At one end of the two support bars (4) close to the frame (2), an upper clamping block (7) is slidably installed. At one end of the two support bars (4) away from the frame (2), a lower clamping block (5) is slidably installed. On the side of the lower clamping block (5) away from the frame (2), a threaded block (12) is fixedly installed. On the side of the two upper clamping blocks (7) away from the frame (2), fixing blocks (10) are fixedly installed. In front of the two fixing blocks (10), a threaded rod (6) is rotatably installed. The outer wall of the threaded rod (6) is threadedly connected to the threaded block (12).

2. The aluminum alloy sheet punching device for construction engineering according to claim 1, characterized in that: On the upper surfaces of the two lower clamping blocks (5) and the two upper clamping blocks (7), two clamping plates (11) are hinged. The clamping plates (11) on the upper surfaces of the two lower clamping blocks (5) and the clamping plates (11) on the upper surfaces of the two upper clamping blocks (7) are axially symmetrically arranged.

3. The punching device for aluminum alloy plates used in construction projects according to claim 2, characterized in that: On the outer wall of the frame (2), a splash-proof device (8) is provided. The splash-proof device (8) includes two cross bars (81), two connecting rods (82), two connecting columns (83), and a splash-proof cover (84). The two cross bars (81) are respectively hinged to the lower parts of the outer walls on both sides of the frame (2). The two connecting columns (83) are respectively fixedly installed on both sides of the threaded connection block (14). One ends of the two connecting rods (82) are respectively hinged to the ends of the two connecting columns (83) away from the threaded connection block (14). The other ends of the two connecting rods (82) are respectively hinged to the middle parts of the two cross bars (81). The splash-proof cover (84) is fixedly installed between the two cross bars (81).

4. The aluminum alloy sheet punching device for construction engineering according to claim 3, wherein: The splash-proof device (8) further includes; two striking plates (85), two convex blocks (86), and two convex spherical columns (87). The two striking plates (85) are installed on the inner walls on both sides of the splash-proof cover (84) through springs. The two convex blocks (86) are respectively fixedly installed in the middle of the surfaces of the two striking plates (85) away from the splash-proof cover (84). The two convex spherical columns (87) are fixedly installed on the outer wall of the joint (16).

5. The punching device for aluminum alloy plates used in construction projects according to claim 4, wherein: On the surface of the striking plate (85) close to the splash-proof cover (84), a number of striking blocks are provided. The convex block (86) is located on the movement track of the convex spherical column (87).

6. The aluminum alloy sheet punching device for construction engineering according to claim 5, wherein: A cooling device (9) is provided on the outer wall of the frame (2). The cooling device (9) includes a pressure rod (91), a start-stop device (92), a water tank (93), a water pipe (94), and a spray head (95). The pressure rod (91) is fixedly connected between two cross bars (81). The start-stop device (92) is fixedly installed on the upper surface of the operation table (1). The upper surface of the water tank (93) is fixedly connected below the start-stop device (92). One end of the water pipe (94) is fixedly connected to the upper surface of the water tank (93). The water pipe (94) penetrates through the upper surface of the operation table (1). The spray head (95) is fixedly connected to the other end of the water pipe (94).

7. The punching device for aluminum alloy plates used in construction projects according to claim 6, wherein: The start-stop device (92) is located below the pressure rod (91) and on the movement track of the pressure rod (91). The water pipe (94) is provided with an installation chamber at the position where it is connected to the spray head (95).

8. The punching device for aluminum alloy plates used in construction engineering according to claim 7, wherein: The cooling device (9) further includes a transmission shaft (96), a water wheel (97), and a fan (98). The transmission shaft (96) is rotatably installed inside the installation chamber of the water pipe (94). One end of the transmission shaft (96) away from the start-stop device (92) penetrates through the outer wall of the installation chamber of the water pipe (94). The water wheel (97) is fixedly installed on the outer wall of the transmission shaft (96). The water wheel (97) is located on the movement track of the water flow in the water pipe (94). The fan (98) is fixedly installed at one end of the transmission shaft (96) away from the start-stop device (92).

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