Multi-functional plate multi-blade saw

Abstract

The application discloses a multifunctional multi-piece plate saw and relates to the technical field of plate saws, which comprises a workbench, a supporting structure is arranged at the bottom of the workbench, a plurality of circular saw blades are arranged at one end of the tabletop of the workbench, a driving assembly for synchronously rotating the circular saw blades is arranged on the workbench, an outer support is fixed to the top of the workbench, rotating rods are rotatably arranged at the two ends of the outer support, and each circular saw blade is sleeved on a rotating rod, an air suction cover is fixed to the top of the outer support, a negative pressure assembly is arranged at the air outlet of the air suction cover, and ion eliminators are arranged on the two sides of the cover opening of the air suction cover. The multifunctional multi-piece plate saw can not only complete the cutting of multiple plates at one time and improve the plate processing efficiency, but also can realize synchronous dust removal and static electricity elimination during the cutting process, improve the environmental conditions of the working site and reduce the influence of dust diffusion on the health of operators.

Description

Technical Field

[0001] This invention relates to the field of blade saw technology, and in particular to a multi-functional multi-blade saw for plates. Background Technology

[0002] The multi-blade log saw is a wood processing equipment independently developed by Chinese researchers. It is mainly used for longitudinal cutting of small-diameter logs and can process logs into multiple pre-sized boards in one go. It is widely used in the fields of plywood, finger-jointed boards and so on.

[0003] A search revealed Chinese patent document CN114393644A, which discloses a CNC machine tool with dust removal function and its dust removal method, relating to the field of CNC lathe dust removal technology. This CNC machine tool with dust removal function and its dust removal method include a machine tool, slide rails, a drive unit, a saw blade, a first dust removal mechanism, an air extraction and collection device, a second dust removal mechanism, and connecting plates. Slide rails are fixedly connected to the top of the machine tool near both sides. The drive unit is fixedly connected to the bottom of the middle of the machine tool, and the saw blade is fixedly connected to the middle of the drive unit. The first dust removal mechanism is interactively connected to the slide rails to collect dust and sawdust generated during wood cutting. An air extraction and collection device is located at the lower middle of the machine tool, and the second dust removal mechanism is fixedly connected to its top. Connecting plates are fixedly connected to both sides of the second dust removal mechanism, and the tops of the connecting plates are fixedly connected to the machine tool. This solves the problems of sawdust and dust scattering everywhere during wood cutting by CNC machine tools and the inconvenience of sorting the sawdust.

[0004] Based on research and existing technology, it has been found that wood chips and fine debris generated during high-speed wood cutting operations experience high-frequency friction with the saw blade edge and the inner wall of the equipment. Simultaneously, during the dust removal airflow, the particles continuously collide and rub against each other, easily generating static charge and accumulating. However, existing wood processing equipment with dust removal functions mostly focuses on negative pressure suction and centralized collection of wood chips, without addressing the static electricity issues in the cutting and dust removal conveying stages. Static-charged fine debris easily adheres to the saw blade surface, the equipment cavity, and the processed boards, reducing the suction efficiency of negative pressure dust removal, making it difficult to effectively collect fine dust and leaving dust residue at the work site. Long-term accumulation of static charge also poses certain safety hazards. Furthermore, the static dust adhering to the board surface can adversely affect subsequent splicing, finishing, and other processing steps. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-functional multi-blade saw for sheet metal to solve the problems mentioned in the background art.

[0006] The technical solution of the present invention is: a multi-functional multi-blade saw for plates, including a workbench, a support structure at the bottom of the workbench, multiple circular saw blades at one end of the workbench surface, and a drive assembly for synchronously rotating the circular saw blades on the workbench. An outer bracket is fixed to the top of the workbench, and rotating rods are rotatably mounted at both ends of the outer bracket, with each circular saw blade fitted onto the rotating rod. A suction hood is fixed to the top of the outer bracket, and a negative pressure assembly is provided at the air outlet of the suction hood. Ion eliminators are provided on both sides of the suction hood opening, and an adjustment mechanism for adjusting the spacing between the circular saw blades is provided on the outside of the suction hood. The ion eliminator includes a horizontal bar and multiple discharge needles embedded and fixed on the horizontal bar. Each discharge needle is connected in parallel to an ion power source, and each discharge needle is connected to an electromagnetic switch. The number of discharge needles activated is proportional to the spacing between the circular saw blades.

[0007] Preferably, the support structure includes a welding bracket, which is fixed to the worktable.

[0008] Preferably, each of the four corners at the bottom of the welding bracket is fixed with a universal wheel equipped with a brake.

[0009] Preferably, the drive assembly includes a servo motor, a first transmission wheel, and a second transmission wheel. The servo motor is fixed to the welding bracket, the output shaft of the servo motor is coaxially fixed to the first transmission wheel, the second transmission wheel is coaxially fixed to the rotating rod, the diameter of the first transmission wheel is larger than the diameter of the second transmission wheel, and the first and second transmission wheels are together fitted with a transmission belt.

[0010] Preferably, the negative pressure assembly includes an exhaust duct, a negative pressure fan, and a collection box. The collection box is disposed on one side of the welding bracket. The two ends of the exhaust duct are respectively fixed to the air outlet of the suction hood and the top of the collection box. An air outlet is opened on the top of the collection box. The negative pressure fan is fixedly installed inside the air outlet. The inner wall of the exhaust duct is provided with a conductive and wear-resistant coating.

[0011] Preferably, a wind pressure transmitter is fixedly installed on the outside of the air duct.

[0012] Preferably, the adjusting mechanism includes a scissor lift structure, a double-threaded rod, two internal threaded blocks, and multiple horizontal plates. Bearing seats are fixed at both ends of one side of the suction hood. The two ends of the double-threaded rod are rotatably mounted in the two bearing seats, with the threads at both ends of the double-threaded rod rotating in opposite directions. The two internal threaded blocks are screwed onto the two ends of the double-threaded rod. The intermediate shafts at both ends of the scissor lift structure are rotatably engaged with the internal threaded blocks. Each intermediate shaft of the scissor lift structure is rotatably engaged with each horizontal plate. A rectangular opening is provided on the outer side of the suction hood, and recesses are provided at both ends of the horizontal plates. The two ends of the horizontal plates slide into the rectangular openings through the recesses.

[0013] Preferably, each pair of adjacent horizontal plates is fitted together with a corrugated sleeve.

[0014] Preferably, an extension rod is fixed to the outer side of each of the horizontal plates. One end of the extension rod has a rotating hole coaxially arranged with the rotating rod. A circular block is rotatably installed inside the rotating hole. The circular block is coaxially fixed with the circular saw blade. Multiple sliders with an integral structure are arranged inside the ring of the circular block. Multiple sliding grooves are opened on the outer side of the rotating rod, and multiple sliders are respectively inserted into each sliding groove.

[0015] Preferably, a plurality of linearly distributed photoelectric sensors are fixed on the outer side of the suction hood, and light-blocking plates are fixed on the outer side of the two internal threaded blocks. A controller is fixed on the outer side of the suction hood. The controller establishes an electrical connection with the photoelectric sensors. When the light-blocking plates block the two photoelectric sensors, the electromagnetic switches in the areas of the two photoelectric sensors are closed, and the discharge needles discharge.

[0016] This invention provides a multi-functional multi-blade saw for sheet metal, which has the following improvements and advantages compared to the prior art: Firstly, this invention not only enables multiple sheet metal cuttings to be completed in one go, improving sheet metal processing efficiency, but also simultaneously removes dust and eliminates static electricity during the cutting process, improving the environmental conditions at the work site and reducing the impact of dust on the health of operators. At the same time, the conductive and wear-resistant coating on the inner wall of the exhaust duct can reduce the long-term erosion and wear of the duct wall by the dust-laden airflow, extending the service life of the duct. It can also guide the static electricity generated by dust friction to be discharged, reducing the safety hazards caused by static electricity accumulation. Furthermore, the static electricity elimination effect can reduce the situation where dust adheres to the surface of the sheet metal due to static electricity, improving the surface cleanliness of the processed sheet metal and reducing the workload of subsequent cleaning processes. Secondly, this invention employs a scissor fork linkage combined with a double threaded rod for spacing adjustment. This not only enables synchronous and uniform adjustment of the spacing between multiple circular saw blades, adapting to the cutting requirements of different widths of plates and making the spacing adjustment process smoother and more stable, but also features a photoelectric induction system that automatically matches the number of working discharge needles. This eliminates the need for manual adjustment of the static eliminator, enhancing the automation adaptability of the equipment and reducing the complexity of manual adjustment. Simultaneously, the corrugated sleeves between adjacent horizontal plates maintain the airtightness of the suction hood at different spacings, ensuring the negative pressure dust removal effect under different cutting specifications. The transmission cooperation between the slider and the groove also maintains stable torque transmission after spacing adjustment, without affecting the synchronous rotation performance of the multiple saw blades. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a first-view perspective three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the overall second-view three-dimensional structure of the present invention; Figure 3 This is a schematic diagram of the overall third-view three-dimensional structure of the present invention; Figure 4 This is a partial first-view perspective three-dimensional structural diagram of the suction hood of the present invention; Figure 5 for Figure 4 A magnified structural diagram at point A; Figure 6 This is a partial second-view three-dimensional structural diagram of the suction hood of the present invention; Figure 7 for Figure 6 A magnified structural diagram at point B; Figure 8 This is a partial third-view perspective three-dimensional structural diagram of the suction hood of the present invention; Figure 9 for Figure 8 A magnified structural diagram at point C; Figure 10 This is a three-dimensional structural diagram of the rotating rod region of the present invention; Figure 11 This is a schematic diagram of the three-dimensional structure of the circular saw blade of the present invention.

[0019] Figure label: 1. Workbench; 2. Welding bracket; 3. Casters with brakes; 4. Circular saw blade; 5. Outer bracket; 6. Suction hood; 7. Rotating rod; 8. Servo motor; 9. First transmission wheel; 10. Second transmission wheel; 11. Transmission belt; 12. Collection box; 13. Exhaust duct; 14. Negative pressure fan; 15. Crossbar; 16. Discharge needle; 17. Electromagnetic switch; 18. Scissor linkage structure; 19. Double threaded rod; 20. Internal threaded block; 21. Light-blocking plate; 22. Bearing seat; 23. Corrugated sleeve; 24. Extension rod; 25. Circular block; 26. Slider; 27. Photoelectric sensor. Detailed Implementation

[0020] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] This invention provides a multi-functional multi-blade saw for sheet metal through improvements. The technical solution of this invention is as follows: like Figures 1 to 11 As shown, this embodiment of the invention provides a multi-functional multi-blade saw for sheet metal, including a workbench 1. The bottom of the workbench 1 is provided with a support structure. Multiple circular saw blades 4 are provided at one end of the workbench 1. A drive assembly is provided on the workbench 1 to make each circular saw blade 4 rotate synchronously. An outer bracket 5 is fixed on the top of the workbench 1. Rotating rods 7 are rotatably installed at both ends of the outer bracket 5. Each circular saw blade 4 is sleeved on the rotating rod 7. A suction hood 6 is fixed on the top of the outer bracket 5. A negative pressure assembly is provided at the air outlet of the suction hood 6. Ion eliminators are provided on both sides of the hood opening of the suction hood 6. An adjustment mechanism for adjusting the spacing between each circular saw blade 4 is provided on the outside of the suction hood 6. The ion eliminator includes a horizontal bar 15 and multiple discharge needles 16 embedded and fixed on the horizontal bar 15. Each discharge needle 16 is connected in parallel to an ion power supply. Each discharge needle 16 is connected to an electromagnetic switch 17. The number of discharge needles 16 activated is proportional to the spacing between the circular saw blades 4. As can be seen from the above, this equipment integrates a multi-blade cutting structure, a negative pressure dust removal structure, and an electrostatic elimination structure into one unit. It can simultaneously handle the dust and static electricity generated during the cutting process while completing multiple synchronous cuttings of the board. At the same time, the spacing of the circular saw blades 4 can be flexibly adjusted through the adjustment mechanism to adapt to different board cutting size requirements. Furthermore, the number of discharge needles 16 that can be activated can be adaptively matched with the cutting spacing, thereby improving the functional integration and scene adaptability of the equipment.

[0022] Specifically, in conjunction with the appendix Figure 1-3 As shown, the support structure includes a welding bracket 2, which is fixed to the workbench 1; As can be seen from the above, the fixed arrangement of the welding bracket 2 and the workbench 1 can provide a stable load-bearing support for the workbench 1 and the entire set of cutting, dust removal and other components on the upper part, disperse the force generated when the equipment is running, reduce the structural shaking during the operation, and provide a stable foundation for plate cutting operations. Specifically, in conjunction with the appendix Figure 3 As shown, the bottom four corners of the welding bracket 2 are all fixed with universal wheels 3 equipped with brakes; As can be seen from the above, the welding bracket 2 has a structure with braked casters 3 at the four corners at the bottom. This structure allows the equipment to be moved flexibly according to the layout requirements of the production site, adapting to different work scenarios and processing stations. It also allows the brake structure to be activated to lock the casters after the equipment is in place, preventing the equipment from slipping or shifting during operation. This balances the equipment's mobility and operational stability. Specifically, in conjunction with the appendix Figure 2 and 3 As shown, the drive assembly includes a servo motor 8, a first transmission wheel 9, and a second transmission wheel 10. The servo motor 8 is fixed to the welding bracket 2. The output shaft of the servo motor 8 is coaxially fixed to the first transmission wheel 9. The second transmission wheel 10 is coaxially fixed to the rotating rod 7. The diameter of the first transmission wheel 9 is larger than the diameter of the second transmission wheel 10. The first transmission wheel 9 and the second transmission wheel 10 are together fitted with a transmission belt 11. As can be seen from the above, when the servo motor 8 is running, it will drive the first transmission wheel 9 to rotate synchronously. The power is transmitted to the second transmission wheel 10 through the transmission belt 11, which in turn drives the rotating rod 7 and all the circular saw blades 4 to rotate synchronously, providing continuous power for plate cutting. Specifically, in conjunction with the appendix Figure 1-3 As shown, the negative pressure assembly includes an exhaust pipe 13, a negative pressure fan 14, and a collection box 12. The collection box 12 is set on one side of the welding bracket 2. The two ends of the exhaust pipe 13 are respectively fixed to the air outlet of the suction hood 6 and the top of the collection box 12. An air outlet is opened on the top of the collection box 12. The negative pressure fan 14 is fixedly installed in the air outlet. The inner wall of the exhaust pipe 13 is provided with a conductive and wear-resistant coating. As can be seen from the above, when the negative pressure fan 14 is running, it will create a negative pressure environment inside the collection box 12, the exhaust pipe 13 and the suction hood 6. This allows the suction hood 6 to suck up the wood chips and dust generated when the circular saw blade 4 cuts the board and transport them to the collection box 12 for centralized storage. This achieves simultaneous dust removal during the cutting process, reduces the spread of dust to the working environment, and improves the environmental conditions at the work site. The conductive and wear-resistant coating on the inner wall of the exhaust pipe 13 can reduce the wear caused by the long-term scouring of the dust-laden airflow on the inner wall of the pipe, extend the service life of the exhaust pipe 13, and also guide the static electricity generated by the friction of dust in the pipe to be discharged, avoiding the safety hazards caused by the accumulation of static electricity in the pipe and improving the safety of the dust removal system. Specifically, in conjunction with the appendix Figure 2 As shown, a wind pressure transmitter is fixedly installed on the outside of the air duct 13; As can be seen from the above, combined with the appendix Figure 3 As shown, the wind pressure transmitter installed on the outside of the exhaust duct 13 can collect the wind pressure value inside the dust removal pipeline in real time, which makes it easier for operators to grasp the operating status of the negative pressure dust removal system, detect abnormalities such as pipeline blockage and insufficient wind pressure in a timely manner, improve the controllability of the dust removal system operation, and help maintain a stable dust removal effect. Specifically, in conjunction with the appendix Figure 3-5 As shown, the adjustment mechanism includes a scissor linkage structure 18, a double threaded rod 19, two internal threaded blocks 20, and multiple horizontal plates. Bearing seats 22 are fixed at both ends of one side of the suction hood 6. The two ends of the double threaded rod 19 are rotatably installed in the two bearing seats 22, and the threads of the two ends of the double threaded rod 19 are opposite. The two internal threaded blocks 20 are screwed onto the two ends of the double threaded rod 19. The intermediate shafts at both ends of the scissor linkage structure 18 form a rotational engagement with the internal threaded blocks 20. Each intermediate shaft of the scissor linkage structure 18 forms a rotational engagement with each horizontal plate. A rectangular opening is provided on the outer side of the suction hood 6. A notch is provided at both ends of the horizontal plate. The two ends of the horizontal plate slide into the rectangular opening through the notch. As can be seen from the above, when the double threaded rod 19 is rotated, the threads at its two ends with opposite directions will drive the two internal threaded blocks 20 to move synchronously towards or away from each other, thereby driving the scissor linkage structure 18 to unfold or retract. Each intermediate shaft of the scissor linkage will drive the corresponding horizontal plate to slide smoothly along the rectangular opening of the suction hood 6, realizing the synchronous adjustment of the spacing between each horizontal plate. The adjustment method of using the scissor linkage and the double threaded rod 19 can ensure the synchronicity and uniformity of the adjustment of the spacing between each horizontal plate, making the spacing adjustment process smoother and improving the convenience of adjusting the cutting spacing of the multi-blade saw. Specifically, in conjunction with the appendix Figure 3-7 As shown, each pair of adjacent horizontal plates is fitted together with a corrugated sleeve 23; As can be seen from the above, the corrugated sleeve 23 set between adjacent horizontal plates can expand and contract synchronously with the change of the horizontal plate spacing, forming a flexible shielding structure between the horizontal plates to prevent wood chips and dust from overflowing from the gaps between the horizontal plates, improve the airtightness of the suction hood 6, and ensure the effect of negative pressure dust removal; at the same time, the expansion and contraction characteristics of the corrugated sleeve 23 will not hinder the adjustment of the horizontal plate spacing, and can maintain the sealing and dustproof function while adapting to different cutting spacings. Specifically, in conjunction with the appendix Figure 8-11 As shown, an extension rod 24 is fixed to the outside of each horizontal plate. One end of the extension rod 24 is provided with a rotating hole coaxially arranged with the rotating rod 7. A ring block 25 is rotatably installed inside the rotating hole. The ring block 25 is coaxially fixed with the circular saw blade 4. Multiple sliders 26 with an integral structure are provided inside the ring of the ring block 25. Multiple grooves are provided on the outside of the rotating rod 7. Multiple sliders 26 are respectively inserted into each groove. As described above, when the horizontal plate is adjusted, the extension rod 24 drives the ring block 25 to move axially along the rotating rod 7. The slider 26 inside the ring block 25 is fitted into the groove of the rotating rod 7. It can not only follow the ring block 25 to complete the axial spacing adjustment, but also rotate synchronously with the rotating rod 7, thereby driving the circular saw blade 4 to operate synchronously. This structure can ensure the smoothness of the circular saw blade 4 spacing adjustment, and also ensure that all circular saw blades 4 receive rotational power synchronously, maintaining the synchronicity of the cutting operation. At the same time, the cooperation between the slider 26 and the groove can stably transmit torque and improve the reliability of power transmission. Specifically, in conjunction with the appendix Figure 1-5 As shown, multiple linearly distributed photoelectric sensors 27 are fixed on the outside of the suction hood 6, and light-blocking plates 21 are fixed on the outside of the two internal threaded blocks 20. A controller is fixed on the outside of the suction hood 6. The controller establishes an electrical connection with the photoelectric sensors 27. When the light-blocking plates 21 block the two photoelectric sensors 27, the electromagnetic switches 17 in the area of ​​the two photoelectric sensors 27 are closed, and the discharge needle 16 performs discharge. As described above, when the internal thread block 20 moves, it will drive the light-blocking plate 21 to move synchronously. When the light-blocking plate 21 passes the photoelectric sensor 27, it will block the light path. After the controller receives the signal of the corresponding photoelectric sensor 27, it will control the electromagnetic switch 17 in the area between the two blocked photoelectric sensors 27 to close, so that the discharge needle 16 in this area is connected to the ion power supply and starts to discharge. This structure can automatically match the corresponding number of discharge needles 16 to be put into operation according to the spacing adjustment state of the circular saw blade 4, so that the coverage of static electricity elimination is adapted to the current cutting area, improving the automation level of the equipment and reducing the workload of manual operation. At the same time, the ions released by the discharge needle 16 can neutralize the static electricity generated during the cutting process, reduce the situation where dust adheres to the board or equipment due to static electricity adsorption, improve the dust removal effect, and also reduce the impact of static electricity on the processing quality of the board.

[0023] Working principle: During the spacing adjustment stage, the operator rotates the double-threaded rod 19 according to the cutting width requirements of the material to be cut. The opposite threads at both ends of the double-threaded rod 19 drive the two internal threaded blocks 20 to move synchronously towards or away from each other, thereby driving the scissor linkage structure 18 to unfold or retract. Each intermediate shaft of the scissor linkage drives the corresponding horizontal plate to slide smoothly along the rectangular opening on the outside of the suction hood 6. The horizontal plate then drives the ring block 25 to move along the axis of the rotating rod 7 through the extension rod 24, thereby adjusting the distance between each circular saw blade 4 to adapt to different cutting specifications. At the same time as the spacing adjustment, the internal threaded block 20 drives the light-blocking plate 21 to move synchronously. When the light-blocking plate 21 sweeps past the photoelectric sensors 27 at different positions, it will block the light path. After the controller receives the signal from the corresponding photoelectric sensor 27, it automatically controls the electromagnetic switch 17 in the area between the two blocked photoelectric sensors 27 to close, so that the corresponding number of discharge needles 16 are connected to the ion power supply to start working, so that the coverage area of ​​static electricity elimination automatically corresponds to the current cutting area. After entering the cutting operation stage, the servo motor 8 is started. The servo motor 8 drives the first transmission wheel 9 to rotate synchronously. The power is transmitted to the second transmission wheel 10 through the transmission belt 11. The rotation speed is increased by the difference in wheel diameter between the first transmission wheel 9 and the second transmission wheel 10, which in turn drives the rotating rod 7 to rotate at high speed. The rotating rod 7 forms a circumferential limit with the slider 26 on the ring block 25 through the sliding groove on its surface, which drives all the circular saw blades 4 to rotate synchronously at high speed. At this time, the plate to be processed is pushed smoothly along the worktable 1, and multiple parallel cuts can be completed at one time, improving the processing efficiency of the plate. While the cutting operation is underway, the negative pressure fan 14 operates continuously, creating a negative pressure environment inside the collection box 12, the exhaust duct 13, and the suction hood 6. The suction hood 6, positioned above the circular saw blade 4, draws up the sawdust and dust generated during cutting and transports them through the exhaust duct 13 to the collection box 12 for centralized collection, reducing the spread of dust to the work site. As the dust-laden airflow flows within the exhaust duct 13, the conductive and wear-resistant coating on the inner wall of the duct reduces the erosion and wear caused by dust particles and discharges static electricity generated by dust friction, preventing static buildup. Simultaneously, the discharge needle 16, in operation, releases ions through corona discharge, neutralizing the static electricity generated by cutting friction. This prevents dust from being difficult to extract due to static adsorption, improving dust removal efficiency, and also prevents static electricity from affecting the surface finish of the board. During operation, the wind pressure transmitter monitors the wind pressure value inside the dust removal pipeline in real time. Operators can use the wind pressure value to judge the operating status of the dust removal system and promptly address any abnormalities such as pipeline blockage. When the equipment needs to be moved to a different workstation, simply release the brakes on the casters to move the equipment. Once in place, locking the caster brakes will secure the equipment and ensure the stability of the operation.

[0024] The foregoing description enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-functional multi-blade saw for sheet metal, comprising a workbench (1), characterized in that: The bottom of the workbench (1) is provided with a support structure. Multiple circular saw blades (4) are provided at one end of the workbench (1), and a drive assembly is provided on the workbench (1) to make each circular saw blade (4) rotate synchronously. An outer bracket (5) is fixed on the top of the workbench (1). Rotating rods (7) are rotatably installed at both ends of the outer bracket (5), and each circular saw blade (4) is sleeved on the rotating rod (7). A suction hood (6) is fixed on the top of the outer bracket (5), and the exhaust of the suction hood (6) is... The mouth is equipped with a negative pressure component. Ion eliminators are provided on both sides of the mouth of the suction hood (6). An adjustment mechanism for adjusting the spacing of each circular saw blade (4) is provided on the outside of the suction hood (6). The ion eliminator includes a horizontal bar (15) and multiple discharge needles (16) embedded and fixed on the horizontal bar (15). Each discharge needle (16) is connected in parallel to an ion power source. Each discharge needle (16) is connected to an electromagnetic switch (17). The number of discharge needles (16) activated is proportional to the spacing of the circular saw blades (4).

2. The multi-functional multi-blade saw for plates according to claim 1, characterized in that: The support structure includes a welding bracket (2), which is fixed to the workbench (1).

3. The multi-functional multi-blade saw for plates according to claim 2, characterized in that: The welding bracket (2) is fixed with universal wheels (3) with brakes at the four corners of its bottom.

4. The multi-functional multi-blade saw for plates according to claim 1, characterized in that: The drive assembly includes a servo motor (8), a first transmission wheel (9), and a second transmission wheel (10). The servo motor (8) is fixed to the welding bracket (2). The output shaft of the servo motor (8) is coaxially fixed to the first transmission wheel (9). The second transmission wheel (10) is coaxially fixed to the rotating rod (7). The diameter of the first transmission wheel (9) is larger than the diameter of the second transmission wheel (10). The first transmission wheel (9) and the second transmission wheel (10) are fitted together with a transmission belt (11).

5. A multi-functional multi-blade saw for plates according to claim 2, characterized in that: The negative pressure assembly includes an exhaust pipe (13), a negative pressure fan (14), and a collection box (12). The collection box (12) is located on one side of the welding bracket (2). The two ends of the exhaust pipe (13) are fixed to the air outlet of the suction hood (6) and the top of the collection box (12), respectively. The top of the collection box (12) has an air outlet. The negative pressure fan (14) is fixedly installed inside the air outlet. The inner wall of the exhaust pipe (13) is provided with a conductive and wear-resistant coating.

6. A multi-functional multi-blade saw for plates according to claim 5, characterized in that: A wind pressure transmitter is fixedly installed on the outside of the air duct (13).

7. The multi-functional multi-blade saw for plates according to claim 1, characterized in that: The adjustment mechanism includes a scissor link structure (18), a double threaded rod (19), two internal threaded blocks (20), and multiple horizontal plates. Bearing seats (22) are fixed at both ends of one side of the suction hood (6). The two ends of the double threaded rod (19) are rotatably installed in the two bearing seats (22), and the threads of the two ends of the double threaded rod (19) are opposite. The two internal threaded blocks (20) are screwed onto the two ends of the double threaded rod (19). The intermediate shafts at both ends of the scissor link structure (18) are rotatably engaged with the internal threaded blocks (20). Each intermediate shaft of the scissor link structure (18) is rotatably engaged with each horizontal plate. A rectangular opening is provided on the outer side of the suction hood (6). Both ends of the horizontal plates are provided with recesses. The two ends of the horizontal plates slide into the rectangular openings through the recesses.

8. A multi-functional multi-blade saw for plates according to claim 7, characterized in that: Each pair of adjacent horizontal plates is fitted together with a corrugated sleeve (23).

9. A multi-functional multi-blade saw for plates according to claim 8, characterized in that: An extension rod (24) is fixed to the outside of each of the horizontal plates. One end of the extension rod (24) is provided with a rotating hole coaxially arranged with the rotating rod (7). A ring block (25) is rotatably installed inside the rotating hole. The ring block (25) is coaxially fixed with the circular saw blade (4). Multiple sliders (26) with an integral structure are provided inside the ring of the ring block (25). Multiple sliding grooves are provided on the outside of the rotating rod (7), and multiple sliders (26) are respectively inserted into each sliding groove.

10. A multi-functional multi-blade saw for sheet metal according to claim 9, characterized in that: Multiple linearly distributed photoelectric sensors (27) are fixed on the outside of the suction hood (6). Light-blocking plates (21) are fixed on the outside of the two internal threaded blocks (20). A controller is fixed on the outside of the suction hood (6). The controller establishes an electrical connection with the photoelectric sensors (27). The light-blocking plates (21) block the two photoelectric sensors (27), so the electromagnetic switches (17) in the area of ​​the two photoelectric sensors (27) are closed, and the discharge needle (16) performs discharge.

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