Air suction pipe device of plate laser cutting machine

Abstract

The utility model relates to the technical field of plate cutting, in particular to an air suction pipe device of a plate laser cutting machine, which comprises a case, a filter drum, an annular scraper and a power component. A cylindrical cavity is formed in the machine box, an air inlet pipe communicated with the cylindrical cavity is arranged on the side wall of the machine box, a blow-off pipe communicated with the cylindrical cavity is arranged at the bottom of the machine box, and an electromagnetic valve is arranged in the blow-off pipe. And an air guide pipe communicated with the cylindrical cavity is arranged at the top end of the case and is communicated with an exhaust pipe. The filter cartridge is positioned in the cylindrical cavity and is connected with the case; and an airflow channel is arranged between the filter cartridge and the side wall of the cylindrical cavity. The annular scraper is sleeved outside the filter cartridge and is in sliding connection with the cambered surface of the filter cartridge, and the outer edge of the annular scraper is attached to the inner wall of the cylindrical cavity. The power assembly drives the annular scraping plate to lift in a reciprocating manner in a working state so as to scrape attachments on the surface of the filter cartridge and push the attachments to the blow-off pipe. According to the utility model, the circulating cleaning of the filter cartridge can be automatically completed under the condition of no shutdown, and the cleaned and intercepted dirt can be independently discharged.

Description

Technical Field

[0001] The utility model relates to the technical field of plate cutting, in particular to an air suction pipe device of a plate laser cutting machine. Background Art

[0002] Laser cutting uses a high-power density laser beam to irradiate the material being cut, quickly heating the material to its vaporization temperature and evaporating to form holes. As the beam moves across the material, the holes continuously form narrow slits, completing the cutting of the material. When using laser to cut sheet metal, it is very easy to produce fine particles and smoke, etc. At this time, a suction pipe is needed to remove them. However, existing suction pipes often get stuck and need to be improved.

[0003] In the technical solution disclosed in the Chinese patent with authorization announcement number CN220921234U, after the air enters the interior of the suction pipe, it will pass through the inside of the filter plate, and the filter plate will intercept the fine particles (dust) in the air. When the inside of the filter plate is full of dust, the top cover on the top of the suction pipe is removed, and then the nut at the top of the threaded rod is unscrewed, and the connecting plate is rotated outward to separate it from the threaded rod, and the filter plate is pulled out from the inside of the fixed rod, which facilitates the cleaning of the fine particles (dust) on the outside of the filter plate, so as to solve the problem in the prior art that the particles generated during the cutting process are very easy to fall and adhere to the pipe wall to cause blockage.

[0004] However, the device still has some shortcomings: the filter plate needs to be removed for cleaning, and during the use of the device, due to the large amount of dust and other particulate matter, if it is not cleaned in time, the filter plate will be blocked. However, frequent cleaning requires shutdown operations, which is time-consuming and labor-intensive. At the same time, the retained materials accumulated in the hopper of the device need to be shut down before they can be discharged. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and proposes an air suction pipe device for a plate laser cutting machine.

[0006] The technical solution of the utility model is a suction pipe device for a sheet metal laser cutting machine, comprising a chassis, a cylindrical cavity disposed within the chassis, an air intake pipe disposed on a side wall of the chassis and connected to the cylindrical cavity, a drain pipe disposed at the bottom of the chassis and connected to the cylindrical cavity, a solenoid valve disposed within the drain pipe, and an air duct disposed at the top of the chassis and connected to the cylindrical cavity, the air duct being connected to an exhaust pipe.

[0007] The filter cartridge is located in the cylindrical cavity and connected to the chassis. An air flow channel is set between the filter cartridge and the side wall of the cylindrical cavity, and the bottom of the filter cartridge is located below the pipe mouth of the air inlet pipe. The inner cavity of the filter cartridge is connected to the exhaust pipe.

[0008] The annular scraper is sleeved on the outside of the filter cartridge and is slidably connected to the arc surface thereof, and the outer edge of the annular scraper is in contact with the inner wall of the cylindrical cavity.

[0009] And a power component, the power component is connected to the filter cartridge and drives the annular scraper, and the power component drives the annular scraper to rise and fall back in a working state to scrape down the attachments on the surface of the filter cartridge and push them toward the sewage pipe.

[0010] Preferably, the chassis includes a main pipe and an end cover, a spiral groove is provided on the outside of the top opening of the main pipe, spiral teeth are provided on the inner wall circumference of the end cover, the end cover and the main pipe are screwed together through the spiral groove and the spiral teeth, and the air duct is provided on the end cover.

[0011] Preferably, a coaxial short groove is provided on the inner side of the top opening of the main pipe above the cylindrical cavity, and a plurality of retaining blocks are provided in the short groove. A retaining ring is provided on the edge of the upper opening of the filter cartridge, and a plurality of retaining grooves are provided on the retaining ring. The lower surface of the retaining ring is in contact with the lower wall of the short groove, and each retaining block is inserted into the retaining groove on the corresponding side and in contact with the inner wall thereof, and the upper surface of the retaining ring is in contact with the upper wall of the inner cavity of the end cap.

[0012] Preferably, an annular groove with a gradually shrinking bottom opening is provided on the side wall of the cylindrical cavity in the main pipe, and the annular groove is located above the pipe opening of the air inlet pipe.

[0013] Preferably, the outer diameter of the upper end of the annular scraper is smaller than that of the lower end, so as to form a smooth inclined surface on its circumference for guiding the material downward.

[0014] Preferably, the power assembly includes a rotating shaft, a reciprocating screw and a toothed belt. The rotating shaft is rotatably connected to the filter cartridge, the top end of the rotating shaft extends and inserts into the air duct, and the top end of the rotating shaft is coaxially connected to the impeller, and the bottom end of the rotating shaft is coaxially connected to the double-groove pulley. Two sets of reciprocating screws are respectively located on both sides of the outside of the filter cartridge and are parallel to the radial direction of the filter cartridge. The two ends of the reciprocating screw are rotatably connected to a mounting plate, and the mounting plate is connected to the outer wall of the filter cartridge. The reciprocating screws on both sides pass through the annular scraper, and the shuttles on the reciprocating screws on both sides are connected to the annular scraper. The reciprocating screws on both sides are coaxially connected to a single-groove pulley, and the single-groove pulleys on both sides are respectively connected to the double-groove pulley through a toothed belt.

[0015] Preferably, a detector for detecting the moving position of the annular scraper is provided in the chassis, the detector is electrically connected to the controller, and the controller is electrically connected to the solenoid valve.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects:

[0017] An annular scraper is provided on the outside of the filter cartridge in sliding connection with its outer wall, and a power assembly provided in the chassis is used to drive the annular scraper to rise and fall, so that the annular scraper can be used to scrape off the attachments on the surface of the filter cartridge and move it toward the sewage pipe. When the annular scraper reaches the smooth section at the bottom of the filter cartridge, it just cuts off the air flow channel between the filter cartridge and the main pipe to form an independent space below the annular scraper. At this time, the impurities in the space are not affected by the attraction of the air above and are automatically discharged along the sewage pipe through the automatically opened solenoid valve. This structure does not need to cut off the air intake and exhaust when discharging sewage, and will not affect the equipment that cuts for a long time. At the same time, the power assembly uses the impeller as the power source and does not need to consume electricity separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection structure of various components on the main pipe;

[0020] Figure 3 This is a schematic diagram of the internal structure of the supervisor;

[0021] Figure 4 Schematic diagram of the connection structure of various components on the filter cartridge.

[0022] Figure numerals: 1. main pipe; 101. cylindrical cavity; 102. annular groove; 103. short groove; 104. block; 2. air inlet pipe; 3. drain pipe; 4. solenoid valve; 5. end cover; 6. air guide duct; 7. exhaust pipe; 8. filter cartridge; 9. limiting ring; 901. slot; 10. rotating shaft; 11. impeller; 12. annular scraper; 13. reciprocating screw; 14. single-groove pulley; 15. double-groove pulley; 16. toothed belt; 17. detector. DETAILED DESCRIPTION

[0023] Example 1

[0024] like Figure 1-Figure 4As shown, the present invention proposes an air suction duct device for a sheet metal laser cutting machine, comprising a chassis, a filter cartridge 8, an annular scraper 12, and a power assembly. A cylindrical cavity 101 is provided in the chassis, an air intake duct 2 is provided on the side wall of the chassis, and the side wall of the cylindrical cavity 101 is provided with an annular groove 102 with a gradually narrowing bottom opening. The annular groove 102 is located above the nozzle of the air intake duct 2. When the annular scraper 12 moves upward, the dirt scraped off falls on the annular scraper 12 and then enters the annular groove 102. The dirt automatically slides down along the annular groove 102 and the inclined surface of the annular scraper 12 to the bottom of the annular scraper 12. A drain pipe 3 is provided at the bottom of the chassis, which is connected to the cylindrical cavity 101. A solenoid valve 4 is provided in the drain pipe 3. An air duct 6 is provided at the top of the chassis, which is connected to the cylindrical cavity 101. The air duct 6 is connected to the exhaust pipe 7. The filter cartridge 8 is located in the cylindrical cavity 101 and is connected to the chassis. An air flow channel is provided between the filter cartridge 8 and the side wall of the cylindrical cavity 101, and the bottom of the filter cartridge 8 is located below the nozzle of the air inlet pipe 2. A smooth closed cylindrical tube is provided at the bottom of the filter cartridge 8, and the inner cavity of the filter cartridge 8 is connected to the exhaust pipe 7. The outer diameter of the upper end of the annular scraper 12 is smaller than the outer diameter of the lower end, so as to form a smooth inclined surface on its circumference for guiding the material downward. The annular scraper 12 is sleeved on the outside of the filter cartridge 8 and is slidably connected to its arc surface. The outer edge of the annular scraper 12 is in contact with the inner wall of the cylindrical cavity 101. The power assembly includes a rotating shaft 10, a reciprocating screw 13 and a toothed belt 16. The rotating shaft 10 is rotatably connected to the filter cartridge 8. The top end of the rotating shaft 10 extends into the air duct 6, and the top end of the rotating shaft 10 is coaxially connected to the impeller 11, and the bottom end of the rotating shaft 10 is coaxially connected to the double-groove pulley 15. Two sets of reciprocating screws 13 are located on either side of the exterior of the filter cartridge 8 and are parallel to the radial direction of the filter cartridge 8. Each end of the reciprocating screw 13 is rotatably connected to a mounting plate, which is connected to the outer wall of the filter cartridge 8. Each reciprocating screw 13 on either side passes through an annular scraper 12, and the shuttles on each reciprocating screw 13 are connected to the annular scraper 12. Each reciprocating screw 13 on either side is coaxially connected to a single-groove pulley 14, which is connected to a double-groove pulley 15 via a toothed belt 16. When in operation, the power assembly drives the annular scraper 12 to rise and fall back, scraping debris from the surface of the filter cartridge 8 downward and pushing it toward the sewage pipe 3. A detector 17 is provided within the chassis for detecting the movement of the annular scraper 12. The detector 17 includes, but is not limited to, a proximity sensor, which is electrically connected to a controller, which is electrically connected to the solenoid valve 4.

[0025] In this embodiment, the exhaust pipe 7 is connected to the air intake end of the external fan, and the air intake pipe 2 is connected to the air collecting hood on the laser cutting machine. When the fan is started, the smoke and particles generated by the cutting machine follow the air flow along the air intake pipe 2 into the cylindrical cavity 101. At this time, the particles and other impurities are intercepted by the filter cartridge 8, and the air enters the air guide pipe 6 and is discharged from the exhaust pipe 7. The flowing air drives the impeller 11 to rotate, and then drives the rotating shaft 10 to rotate, and then drives the reciprocating screw 13 to rotate through the toothed belt 16. The reciprocating screws 13 on both sides synchronously drive the annular scraper 12 to reciprocate up and down in the same direction. When the annular scraper 12 slides down, The dirt adsorbed on the outside of the filter cartridge 8 is directly scraped off. As the annular scraper 12 continues to slide down and reaches the smooth closed section at the bottom of the filter cartridge 8, the detector 17 detects the annular scraper 12, and the controller controls the solenoid valve 4 to open. At this time, the dirt in the independent space below the annular scraper 12 is directly discharged along the sewage pipe 3. Then the annular scraper 12 continues to slide down and reaches the lowest position, then slides in the opposite direction and gradually rises. When the detector 17 detects the annular scraper 12 again, the controller controls the solenoid valve 4 to close, and then the annular scraper 12 rises to the highest position and slides down again. This cycle is repeated to achieve self-cleaning and automatic sewage discharge without stopping the machine.

[0026] Example 2

[0027] like Figure 1-Figure 3 As shown, the present invention proposes an air suction duct device for a plate laser cutting machine. Compared with the first embodiment, the chassis includes a main pipe 1 and an end cover 5. A spiral groove is provided on the outside of the top opening of the main pipe 1, and spiral teeth are provided on the inner wall circumference of the end cover 5. The end cover 5 and the main pipe 1 are screwed together through the spiral groove and the spiral teeth, and the air guide pipe 6 is provided on the end cover 5. A short groove 103 coaxial with the cylindrical cavity 101 is provided on the inner side of the top opening of the main pipe 1, and a plurality of clamping blocks 104 are provided in the short groove 103. A limiting ring 9 is provided on the edge of the upper opening of the filter cartridge 8, and a plurality of clamping grooves 901 are provided on the limiting ring 9. The lower surface of the limiting ring 9 is in contact with the lower wall of the short groove 103. Each clamping block 104 is respectively inserted into the clamping groove 901 on the corresponding side and in contact with its inner wall, and the upper surface of the limiting ring 9 is in contact with the upper wall of the inner cavity of the end cover 5.

[0028] In this embodiment, when the filter cartridge 8 needs to be replaced or the power assembly needs to be repaired, it is only necessary to rotate the end cover 5 to remove the end cover 5, and then pull out the filter cartridge 8 as a whole. The operation is simple and convenient, and the slot 901 on the limit ring 9 and the block 104 in the short slot 103 effectively limit the rotation of the filter cartridge 8 to prevent it from rotating with the rotating shaft 10.

[0029] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A suction pipe device for a plate laser cutting machine, characterized in that: include A chassis, wherein a cylindrical cavity (101) is provided in the chassis, an air inlet pipe (2) communicating with the cylindrical cavity (101) is provided on a side wall of the chassis, a sewage pipe (3) communicating with the cylindrical cavity (101) is provided at the bottom of the chassis, and a solenoid valve (4) is provided in the sewage pipe (3); an air guide pipe (6) communicating with the cylindrical cavity (101) is provided at the top of the chassis, and the air guide pipe (6) is connected to an exhaust pipe (7); A filter cartridge (8), the filter cartridge (8) is located in the cylindrical cavity (101) and connected to the chassis, an air flow channel is provided between the filter cartridge (8) and the side wall of the cylindrical cavity (101), and the bottom of the filter cartridge (8) is located below the nozzle of the air inlet pipe (2), and the inner cavity of the filter cartridge (8) is connected to the exhaust pipe (7); An annular scraper (12), the annular scraper (12) is sleeved on the outside of the filter cartridge (8) and is slidably connected to the arc surface thereof, and the outer edge of the annular scraper (12) is in contact with the inner wall of the cylindrical cavity (101); and a power assembly connected to the filter cartridge (8) and driving the annular scraper (12). The power assembly drives the annular scraper (12) to move up and down in a working state, so as to scrape down the attachments on the surface of the filter cartridge (8) and push them toward the sewage pipe (3).

2. The air suction pipe device of a plate laser cutting machine according to claim 1, characterized in that: The chassis comprises a main pipe (1) and an end cover (5); a spiral groove is arranged outside the top opening of the main pipe (1); spiral teeth are arranged on the inner wall circumference of the end cover (5); the end cover (5) and the main pipe (1) are screwed together through the spiral groove and the spiral teeth; and an air guide pipe (6) is arranged on the end cover (5).

3. The suction pipe device of a plate laser cutting machine according to claim 2, characterized in that: A short groove (103) coaxial with the cylindrical cavity (101) is provided on the inner side of the top opening of the main pipe (1), and a plurality of clamping blocks (104) are provided in the short groove (103); a limiting ring (9) is provided on the edge of the upper opening of the filter cartridge (8), and a plurality of clamping grooves (901) are provided on the limiting ring (9), the lower surface of the limiting ring (9) is fitted with the lower wall of the short groove (103), each clamping block (104) is respectively inserted into the clamping groove (901) on the corresponding side and fits with the inner wall thereof, and the upper surface of the limiting ring (9) is fitted with the upper wall of the inner cavity of the end cover (5).

4. The air suction pipe device of a plate laser cutting machine according to claim 2, characterized in that: An annular groove (102) with a gradually shrinking bottom opening is provided on the side wall of the cylindrical cavity (101) in the main pipe (1), and the annular groove (102) is located above the pipe opening of the air inlet pipe (2).

5. The air suction pipe device of a plate laser cutting machine according to claim 1, characterized in that: The outer diameter of the upper end of the annular scraper (12) is smaller than that of the lower end, so as to form a smooth inclined surface on the circumference thereof for guiding the material downward.

6. The air suction pipe device of a plate laser cutting machine according to claim 1, characterized in that: The power assembly includes a rotating shaft (10), a reciprocating screw rod (13) and a toothed belt (16); the rotating shaft (10) is rotatably connected to the filter cartridge (8), the top end of the rotating shaft (10) extends and is inserted into the air guide pipe (6), and the top end of the rotating shaft (10) is coaxially connected to the impeller (11), and the bottom end of the rotating shaft (10) is coaxially connected to the double-groove pulley (15); two sets of reciprocating screw rods (13) are respectively located on both sides of the outside of the filter cartridge (8) and are parallel to the radial direction of the filter cartridge (8), and the reciprocating screw rods (13) are respectively located on both sides of the outside of the filter cartridge (8) and are parallel to the radial direction of the filter cartridge (8). The two ends of the rod (13) are rotatably connected to a mounting plate, and the mounting plate is connected to the outer wall of the filter cartridge (8). The reciprocating screw rods (13) on both sides pass through the annular scraper (12), and the shuttles on the reciprocating screw rods (13) on both sides are connected to the annular scraper (12); the reciprocating screw rods (13) on both sides are coaxially connected to a single-groove pulley (14), and the single-groove pulleys (14) on both sides are respectively connected to the double-groove pulley (15) through a toothed belt (16).

7. The air suction pipe device of a plate laser cutting machine according to claim 1, characterized in that: A detector (17) for detecting the moving position of the annular scraper (12) is provided in the chassis. The detector is electrically connected to the controller, and the controller is electrically connected to the electromagnetic valve (4).

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