Negative pressure dust collection type cutting machine

Abstract

The invention relates to a negative pressure dust collection type cutting machine, and belongs to the technical field of cutting machines, the negative pressure dust collection type cutting machine comprises a cutting machine workbench, a cutting module, a negative pressure dust collection module, an explosion-proof filtering system and a control system, the cutting module comprises a three-dimensional five-axis cutting mechanism and a high-power laser cutting head, and the high-power laser cutting head is loaded at the driving end of the three-dimensional five-axis cutting mechanism. The dust collector has an anti-explosion effect and an environment-friendly discharge function, and is provided with an anti-static pipeline, an inert gas injection device and a spark catcher aiming at flammable metal dust, so that the explosion risk can be remarkably reduced, multi-stage filtration is carried out by adopting the sintered metal filter cartridge, the HEPA filter screen and the like, discharged air meets the environment-friendly standard, the sewage problem of traditional wet dust collection is avoided, and the dust collector is suitable for popularization and application. And the metal plate is fixed through the evenly-distributed adsorption holes, plate deviation caused by vibration or scrap accumulation in the cutting process is prevented, and the precision of the cutting path is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting machines, in particular to a negative pressure dust suction type cutting machine. Background Art

[0002] Traditional cutting machines easily generate large amounts of debris and dust when processing materials such as plates, fabrics, and plastics, polluting the environment and affecting operational accuracy. Existing technologies use external vacuum cleaners for some equipment, but these have issues such as low dust collection efficiency, fragmented structure, and large space requirements. Furthermore, the lack of coordination between the vacuum port and the cutting head results in residual debris.

[0003] The existing cutting machines have the following main problems when cutting metal sheets: 1. The external dust collection system is separated from the cutting area, resulting in low dust collection efficiency and easy dispersion of metal dust; 2. The external dust collection system is separated from the cutting area, resulting in low dust collection efficiency and easy dispersion of metal dust; 3. Metal dust is flammable and explosive, and traditional equipment lacks safety protection. In order to further improve the safety and processing accuracy of metal sheet cutting, a negative pressure dust collection cutting machine is proposed, which can realize the simultaneous completion of cutting and dust collection, improve safety and processing accuracy, and is equipped with a negative pressure dust collection system, using a cyclone separator and a multi-layer filtration structure, which can directly form a negative pressure field near the adsorption hole of the workbench, and the cutting Metal debris and dust are immediately extracted, far exceeding the efficiency of traditional external vacuuming equipment. For flammable metal dust, it is equipped with anti-static pipes, inert gas injection and spark arresters, which can significantly reduce the risk of explosion. It adopts multi-stage filtration such as sintered metal filter cartridges and HEPA filters. The discharged air meets environmental protection standards and avoids the sewage problem of traditional wet dust removal. The metal plate is fixed by evenly distributed adsorption holes to prevent the plate from shifting due to vibration or debris accumulation during the cutting process, thereby improving the accuracy of the cutting path. The integrated design integrates the cutting, vacuuming and filtering functions into a single device, simplifying the production line layout and reducing the installation and maintenance costs of traditional split systems. Summary of the Invention

[0004] The present invention provides a negative pressure dust suction cutting machine, which solves the problems raised in the above-mentioned background technology, can realize the simultaneous completion of cutting and dust collection, improve safety and processing accuracy, effectively improve dust suction efficiency, significantly reduce the risk of explosion, improve the accuracy of the cutting path, and reduce the installation and maintenance costs of traditional split systems.

[0005] The present invention solves the above-mentioned technical problems with the following solution: a negative pressure vacuum cutting machine, comprising a cutting machine workbench, a cutting module, a negative pressure vacuum module, an explosion-proof filtration system, and a control system; the cutting module comprises a three-dimensional five-axis cutting mechanism and a high-power laser cutting head, wherein the high-power laser cutting head is mounted on the driving end of the three-dimensional five-axis cutting mechanism;

[0006] The cutting machine workbench includes a workbench body and a honeycomb negative pressure adsorption plate, and the three-dimensional five-axis cutting mechanism and the honeycomb negative pressure adsorption plate are both mounted on the workbench body;

[0007] The negative pressure dust collection module includes a negative pressure suction pump, a negative pressure dust collection hood, and a negative pressure pipe. The negative pressure dust collection hood covers a honeycomb negative pressure adsorption plate, and the negative pressure suction pump provides negative pressure suction for the negative pressure dust collection hood.

[0008] The explosion-proof filtration system includes a cyclone separator, an explosion-proof metal dust collection box, a sintered metal filter cartridge, a spark arrester, a HEPA filter, a dust collection filter box, a nitrogen generator, and a conveying hopper. The spark arrester, cyclone separator, dust collection filter box, and a negative pressure suction pump are sequentially connected through a negative pressure pipe. The cyclone separator is connected to the explosion-proof metal dust collection box. The sintered metal filter cartridge, the conveying hopper, and the HEPA filter are all loaded in the dust collection filter box. The nitrogen generator is connected to the explosion-proof metal dust collection box.

[0009] The control system includes an integrated PLC signal host and a sensor, and the integrated PLC signal host is connected to the sensor, the negative pressure suction pump, and the nitrogen generator signal.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the three-dimensional five-axis cutting mechanism uses a high-response servo motor to achieve X / Y / Z axis movement, and some high-end cutting heads also support a rotation axis.

[0012] Furthermore, the workbench body is evenly provided with negative pressure dust collecting holes, the honeycomb negative pressure adsorption plate is loaded at the negative pressure dust collecting holes, and the honeycomb negative pressure adsorption plate is evenly provided with honeycomb dust collecting holes.

[0013] Furthermore, three groups of the honeycomb negative pressure adsorption plates are provided on the workbench body, with two in each group. The three groups of the honeycomb negative pressure adsorption plates are respectively placed on the bottom and both sides of the workbench body.

[0014] Furthermore, the negative pressure pipe adopts an anti-static polyurethane hose, and the cyclone separator is connected to the explosion-proof metal dust collection box through an air valve and a hose.

[0015] Furthermore, the explosion-proof metal dust collection box is made of 304 stainless steel with a surface resistance of less than 1×10 6 Ω, an insulating plastic liner is provided inside, and the explosion-proof metal dust collection box and the dust collection filter box are both grounded to eliminate static electricity accumulation.

[0016] Furthermore, the sensors include an oxygen concentration sensor, a dust concentration sensor, and a temperature and pressure sensor. The oxygen concentration sensor and the temperature and pressure sensor are both loaded on an explosion-proof metal dust collection box, and the dust concentration sensor is loaded on the workbench body.

[0017] Furthermore, the explosion-proof metal dust collection box is equipped with a pressure relief valve, and the workbench body is equipped with an inspection door.

[0018] Furthermore, the dust collecting and filtering box is provided with a sealed door, and the top of the explosion-proof metal dust collecting box is provided with a cover structure positioned by screws.

[0019] The beneficial effects of the present invention are as follows: the present invention provides a negative pressure vacuum cutting machine, which has the following advantages:

[0020] 1. Integrated design: It can achieve simultaneous cutting and dust collection, thereby improving safety and processing accuracy. The integrated design integrates cutting, dust collection and filtration functions into a single device, simplifying the production line layout and reducing the installation and maintenance costs of traditional split systems.

[0021] 2. High-efficiency real-time dust collection: Equipped with a negative pressure dust collection system, using a cyclone separator and a multi-layer filtration structure, it can directly form a negative pressure field near the adsorption holes of the workbench. The metal debris and dust generated by cutting are immediately extracted, far exceeding the efficiency of traditional external dust collection equipment.

[0022] 3. Explosion-proof and environmentally friendly emission functions: For flammable metal dust, it is equipped with anti-static pipes, inert gas injection and spark arresters, which can significantly reduce the risk of explosion. It adopts multi-stage filtration such as sintered metal filter cartridges and HEPA filters. The discharged air meets environmental standards and avoids the sewage problem of traditional wet dust removal. The metal plate is fixed by evenly distributed adsorption holes to prevent the plate from shifting due to vibration or debris accumulation during cutting, thereby improving the accuracy of the cutting path.

[0023] 4. Reduce overall costs and recycle resources: Reduce equipment wear caused by dust (such as guide rails and transmission components), extend equipment life, and avoid the risk of fines or production suspension due to non-compliance with environmental protection standards. Metal scraps can be collected and recycled in a centralized manner, reducing the waste of raw materials and complying with the concept of green manufacturing.

[0024] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the description, the following preferred embodiments of the present invention are described in detail with reference to the accompanying drawings. The specific implementation methods of the present invention are given in detail by the following embodiments and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 A schematic structural diagram of a negative pressure vacuum cutting machine provided by one embodiment of the present invention;

[0027] Figure 2 A front view of a negative pressure vacuum cutting machine provided by one embodiment of the present invention;

[0028] Figure 3 A top view of a negative pressure vacuum cutting machine provided in one embodiment of the present invention;

[0029] Figure 4 A schematic structural diagram of an explosion-proof metal dust collection box in a negative pressure vacuum cutting machine provided by one embodiment of the present invention;

[0030] Figure 5 A schematic structural diagram of a honeycomb negative pressure adsorption plate in a negative pressure suction cutting machine provided by one embodiment of the present invention;

[0031] Figure 6 The present invention provides a schematic structural diagram of a dust collection filter box in a negative pressure vacuum cutting machine according to an embodiment of the present invention.

[0032] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0033] 1. Three-dimensional five-axis cutting mechanism; 2. High-power laser cutting head; 3. Workbench body; 4. Honeycomb negative pressure adsorption plate; 5. Negative pressure dust hood; 6. Negative pressure suction pump; 7. Cyclone separator; 8. Explosion-proof metal dust collection box; 9. Negative pressure pipe; 10. Sintered metal filter cartridge; 11. Spark arrester; 12. HEPA filter; 13. Dust collection filter box; 14. Nitrogen generator; 15. Temperature and pressure sensor; 16. Integrated PLC signal host; 17. Oxygen concentration sensor; 18. Dust concentration sensor; 19. Temperature and pressure sensor; 20. Pressure relief valve; 21. Inspection door. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-6 The principles and features of the present invention are described, and the examples given are only for the purpose of explaining the present invention and are not intended to limit the scope of the present invention. The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are in a very simplified form and are not in exact proportions, and are only used for the purpose of conveniently and clearly assisting in illustrating the embodiments of the present invention.

[0035] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] like Figure 1-6 As shown, the present invention provides a negative pressure vacuum cutting machine, including a cutting machine workbench, a cutting module, a negative pressure vacuum module, an explosion-proof filtration system, and a control system. The cutting module includes a three-dimensional five-axis cutting mechanism 1 and a high-power laser cutting head 2. The high-power laser cutting head 2 is mounted on the driving end of the three-dimensional five-axis cutting mechanism 1. The three-dimensional five-axis cutting mechanism 1 uses a high-response servo motor to achieve X / Y / Z axis movement. Some high-end cutting heads also support a rotating axis.

[0038] The cutting machine workbench includes a workbench body 3, a honeycomb negative pressure adsorption plate 4, the three-dimensional five-axis cutting mechanism 1 and the honeycomb negative pressure adsorption plate 4 are both mounted on the workbench body 3, the workbench body 3 is evenly provided with negative pressure dust collection holes, the honeycomb negative pressure adsorption plate 4 is mounted at the negative pressure dust collection holes, the honeycomb negative pressure adsorption plate 4 is evenly provided with honeycomb dust collection holes, and the honeycomb negative pressure adsorption plate 4 is provided with three groups of two honeycomb negative pressure adsorption plates 4 on the workbench body 3, respectively, and the three groups of honeycomb negative pressure adsorption plates 4 are respectively placed at the bottom and both sides of the workbench body 3;

[0039] The negative pressure dust collection module includes a negative pressure suction pump 6, a negative pressure dust collection hood 5, and a negative pressure pipe 9. The negative pressure dust collection hood 5 covers a honeycomb negative pressure adsorption plate 4. The negative pressure suction pump 6 provides negative pressure suction for the negative pressure dust collection hood 5. The negative pressure pipe 9 uses an anti-static polyurethane hose. The cyclone separator 7 is connected to the explosion-proof metal dust collection box 8 through an air valve and a hose.

[0040] The explosion-proof filtration system includes a cyclone separator 7, an explosion-proof metal dust collection box 8, a sintered metal filter cartridge 10, a spark arrester 11, a HEPA filter 12, a dust filter box 13, a nitrogen generator 14, and a conveying bucket 15. The spark arrester 11, the cyclone separator 7, the dust filter box 13, and the negative pressure suction pump 6 are connected in sequence through a negative pressure pipe 9. The cyclone separator 7 is connected to the explosion-proof metal dust collection box 8. The sintered metal filter cartridge 10, the conveying bucket 15, and the HEPA filter 12 are all loaded in the dust filter box 13. The nitrogen generator 14 is connected to the explosion-proof metal dust collection box 8. The explosion-proof metal dust collection box 8 is made of 304 stainless steel with a surface resistance of less than 1×10 6 Ω, an insulating plastic liner is provided inside, the explosion-proof metal dust collection box 8 and the dust collection filter box 13 are both grounded to eliminate static electricity accumulation, the explosion-proof metal dust collection box 8 is equipped with a pressure relief valve 20, the workbench body 3 is equipped with an inspection door 21, the dust collection filter box 13 is provided with a sealed door, and the top of the explosion-proof metal dust collection box 8 is provided with a cover structure positioned by screws;

[0041] The control system includes an integrated PLC signal host 16 and sensors. The integrated PLC signal host 16 is connected to the sensor, the negative pressure suction pump 6, and the nitrogen generator 14. The sensors include an oxygen concentration sensor 17, a dust concentration sensor 18, and a temperature and pressure sensor 19. The oxygen concentration sensor 17 and the temperature and pressure sensor 19 are both loaded on the explosion-proof metal dust collection box 8, and the dust concentration sensor 18 is loaded on the workbench body 3.

[0042] The specific working principle and method of use of the present invention are as follows:

[0043] Example 1: Cutting of metal materials without explosion-proof treatment, taking a 3mm 316L stainless steel plate to cut a curved airfoil structure as an example;

[0044] S1, plate fixing: the stainless steel plate is placed on the workbench body 3, the negative pressure suction pump 6 is started, the negative pressure of the negative pressure suction pump 6 is -20kPa, and the plate is placed on the honeycomb negative pressure adsorption plate 4 on the bottom side;

[0045] S2, cutting and dust collection are coordinated. The laser power of the high-power laser cutting head 2 is set to 4.5kW, the cutting speed driven by the three-dimensional five-axis cutting mechanism 1 is 12m / min, the suction flow rate of the negative pressure dust collection hood 5 is 18m / s, and the dust concentration sensor 18 monitors the dust concentration in the cutting area in real time. If the dust concentration in the cutting area is detected to be high, the suction intensity of the negative pressure suction pump 6 is increased;

[0046] S3: Dust treatment: Dust and cutting debris are transferred to the cyclone separator 7 through the honeycomb negative pressure adsorption plate 4, the negative pressure dust hood 5, the negative pressure pipe 9 and the spark arrestor 11. Large-particle cutting metal debris > 100μm falls into the explosion-proof metal dust collection box 8 through the cyclone separator 7. The spark arrestor 11 can intercept and process the sparks. The micron-level dust is then transferred to the dust collection filter box 13. The sintered metal filter cartridge 10 and the HEPA filter 12 in the dust collection filter box 13 can grade and filter the micron-level dust. The air can be drawn to the negative pressure suction pump 6 and then discharged.

[0047] Example 2: Cutting of flammable and explosive aluminum metal materials, with a 1.5mm 6061-T6 aluminum alloy plate with a rectangular array of holes Take the spacing of 20mm as an example;

[0048] S1, plate fixing: the stainless steel plate is placed on the workbench body 3, the negative pressure suction pump 6 is started, the negative pressure of the negative pressure suction pump 6 is -20kPa, and the plate is placed on the honeycomb negative pressure adsorption plate 4 on the bottom side;

[0049] S2, cutting and dust collection are coordinated. The laser power of the high-power laser cutting head 2 is set to 4.5kW, the cutting speed driven by the three-dimensional five-axis cutting mechanism 1 is 12m / min, the suction flow rate of the negative pressure dust collection hood 5 is 18m / s, and the dust concentration sensor 18 monitors the dust concentration in the cutting area in real time. If the dust concentration in the cutting area is detected to be high, the suction intensity of the negative pressure suction pump 6 is increased;

[0050] S3: Dust treatment: Dust and cutting debris are transferred to the cyclone separator 7 through the honeycomb negative pressure adsorption plate 4, the negative pressure dust hood 5, the negative pressure pipe 9 and the spark arrestor 11. Large-particle cutting metal debris > 100 μm falls into the explosion-proof metal dust collection box 8 through the cyclone separator 7. The spark arrestor 11 can intercept the sparks, and the micron-sized dust is transferred to the dust collection filter box 13. The sintered metal filter cartridge 10 and the HEPA filter 12 in the dust collection filter box 13 can grade and filter the micron-sized dust. The air can then be drawn to the negative pressure suction pump 6 and discharged;

[0051] S4, inert start: Before cutting and processing aluminum, magnesium and other flammable and explosive dust, nitrogen is injected into the explosion-proof metal dust collection box 8 through the nitrogen generator 14. The oxygen concentration sensor 17 can monitor the oxygen concentration to maintain the O2 concentration ≤ 6%. The temperature and pressure sensor 19 monitors the temperature and pressure in the box and promptly issues an alarm when high temperature or high pressure is encountered;

[0052] S5, later maintenance: open the inspection door 21, the explosion-proof metal dust collection box 8 can be removed from the workbench body 3, and the cover on the top of the explosion-proof metal dust collection box 8 can be removed to uniformly process the metal debris collected inside, and the sealed door of the dust collection filter box 13 can be opened to disassemble, replace and maintain the internal sintered metal filter cartridge 10 and HEPA filter 12.

[0053] It should be noted that, in this document, relational terms such as first and second are used solely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. Matters not described in detail in this specification are well known to those skilled in the art.

[0054] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A negative pressure vacuum cutting machine, comprising a cutting machine workbench, a cutting module, a negative pressure vacuum module, an explosion-proof filtration system, and a control system, characterized in that: The cutting module comprises a three-dimensional five-axis cutting mechanism (1) and a high-power laser cutting head (2), wherein the high-power laser cutting head (2) is mounted on a driving end of the three-dimensional five-axis cutting mechanism (1); The cutting machine workbench comprises a workbench main body (3) and a honeycomb negative pressure adsorption plate (4), and the three-dimensional five-axis cutting mechanism (1) and the honeycomb negative pressure adsorption plate (4) are both mounted on the workbench main body (3); The negative pressure dust collection module comprises a negative pressure suction pump (6), a negative pressure dust collection hood (5), and a negative pressure pipe (9); the negative pressure dust collection hood (5) covers a honeycomb-shaped negative pressure adsorption plate (4); and the negative pressure suction pump (6) supplies negative pressure suction force to the negative pressure dust collection hood (5); The explosion-proof filtering system comprises a cyclone separator (7), an explosion-proof metal dust collecting box (8), a sintered metal filter cartridge (10), a spark arrester (11), a HEPA filter (12), a dust collecting filter box (13), a nitrogen generator (14), and a conveying bucket (15); the spark arrester (11), the cyclone separator (7), the dust collecting filter box (13), and the negative pressure suction pump (6) are sequentially connected through a negative pressure pipe (9); the cyclone separator (7) is connected to the explosion-proof metal dust collecting box (8); the sintered metal filter cartridge (10), the conveying bucket (15), and the HEPA filter (12) are all loaded on the dust collecting filter box (13); and the nitrogen generator (14) is connected to the explosion-proof metal dust collecting box (8); The control system comprises an integrated PLC signal host (16) and a sensor, wherein the integrated PLC signal host (16) is connected to the sensor, the negative pressure suction pump (6), and the nitrogen generator (14) by signal.

2. A negative pressure vacuum cutting machine according to claim 1, characterized in that: The three-dimensional five-axis cutting mechanism (1) adopts a high-response servo motor to realize X / Y / Z axis movement, and some high-end cutting heads also support a rotation axis.

3. The negative pressure vacuum cutting machine according to claim 1, characterized in that: The workbench body (3) is evenly provided with negative pressure dust collecting holes, the honeycomb negative pressure adsorption plate (4) is loaded at the negative pressure dust collecting holes, and the honeycomb negative pressure adsorption plate (4) is evenly provided with honeycomb-type dust collecting holes.

4. A negative pressure vacuum cutting machine according to claim 3, characterized in that: The honeycomb negative pressure adsorption plates (4) are arranged in three groups on the workbench main body (3), with two in each group. The three groups of honeycomb negative pressure adsorption plates (4) are respectively placed at the bottom and both sides of the workbench main body (3).

5. The negative pressure vacuum cutting machine according to claim 1, characterized in that: The negative pressure pipe (9) adopts an antistatic polyurethane hose, and the cyclone separator (7) is connected to the explosion-proof metal dust collection box (8) through an air valve and a hose.

6. The negative pressure vacuum cutting machine according to claim 1, characterized in that: The explosion-proof metal dust collecting box (8) is made of 304 stainless steel (surface resistance <1×10 6 Ω), an insulating plastic liner is provided inside, and the explosion-proof metal dust collection box (8) and the dust collection filter box (13) are both grounded to eliminate the danger of static electricity accumulation.

7. The negative pressure vacuum cutting machine according to claim 1, characterized in that: The sensors include an oxygen concentration sensor (17), a dust concentration sensor (18), and a temperature and pressure sensor (19). The oxygen concentration sensor (17) and the temperature and pressure sensor (19) are both mounted on an explosion-proof metal dust collection box (8), and the dust concentration sensor (18) is mounted on a workbench body (3).

8. The negative pressure vacuum cutting machine according to claim 1, characterized in that: The explosion-proof metal dust collecting box (8) is equipped with a pressure relief valve (20), and the workbench body (3) is equipped with an inspection door (21).

9. The negative pressure vacuum cutting machine according to claim 1, characterized in that: The dust collecting and filtering box (13) is provided with a sealed door, and the top of the explosion-proof metal dust collecting box (8) is provided with a cover structure positioned by screws.

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