A hand-held laser cutting machine for convenient operation

Abstract

The application belongs to the technical field of laser cutting, and specifically discloses a handheld laser cutting machine convenient to operate, which comprises a handheld laser cutting gun, a dismounting mechanism is fixed to the top of the handheld laser cutting gun, a convenient dust cleaning mechanism is installed outside the dismounting mechanism, the convenient dust cleaning mechanism is used for dust removal, a protection mechanism is arranged outside the handheld laser cutting gun, the protection mechanism is used for protecting the handheld laser cutting gun and storing dust at the same time, the dismounting mechanism is used for conveniently installing the convenient dust cleaning mechanism and the protection mechanism, and a dust discharging mechanism is arranged at one end of the protection mechanism. Through the convenient dust cleaning mechanism, the protection mechanism and the dust discharging mechanism, smoke dust can be absorbed at the same time of cutting, so as to avoid that the smoke dust shields the line of sight of the operator, thereby avoiding the decrease of the cutting precision and reducing the processing waste rate, and meanwhile, the high-temperature dust is prevented from adhering to the nozzle of the gun body and the surface of the focusing lens, so as to reduce the lens loss and the equipment maintenance and replacement cost.

Description

Technical Field

[0001] This invention belongs to the field of laser cutting technology, and specifically discloses a handheld laser cutting machine that is easy to operate. Background Technology

[0002] This handheld laser cutting machine features a pistol-style gun design for easy handling. The tail of the gun is equipped with a universal, self-aligning metal gooseneck hose integrating fiber optics, water cooling, and gas lines. The hoses can be bent and locked into their desired shape, making it suitable for operation in confined spaces. The machine utilizes a fiber laser to output high-energy laser light, which, combined with high-pressure auxiliary gas ejected from the front nozzle, melts and blows the metal material to complete the cutting. It is highly mobile and can perform on-site, non-fixed-table processing of steel structures, sheet metal, and pipe fittings. The gun head features a simple, quick-release nozzle structure, facilitating disassembly and maintenance. It is widely used in steel structure installation, equipment maintenance, and on-site sheet metal cutting.

[0003] While existing handheld laser cutting machines are convenient, they cannot absorb the dust generated during cutting. Metal fumes and molten splatter particles directly disperse in the operating area, obstructing the operator's vision, causing cutting trajectory deviation, reduced cutting accuracy, and increased scrap rate. At the same time, high-temperature dust adheres to the nozzle and focusing lens surface, contaminating optical components, accelerating lens wear, increasing equipment maintenance and replacement costs, and the lack of effective dust collection can harm the operator's respiratory health, reducing the safety of the device. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide a convenient handheld laser cutting machine to solve the problems of existing handheld laser cutting machines that cannot absorb dust, resulting in increased processing scrap rate, accelerated lens wear, increased equipment maintenance and replacement costs, and potential harm to the respiratory health of operators, thus reducing the safety of the device.

[0005] To achieve the above objectives, the present invention provides a convenient handheld laser cutting machine, including a handheld laser cutting gun. A disassembly and assembly mechanism is fixed to the top of the handheld laser cutting gun. A convenient dust cleaning mechanism is installed outside the disassembly and assembly mechanism for dust removal. A protective mechanism is provided outside the handheld laser cutting gun for protecting the handheld laser cutting gun and storing dust. The disassembly and assembly mechanism facilitates the installation and removal of the convenient dust cleaning mechanism and the protective mechanism. A dust discharge mechanism is provided at one end of the protective mechanism for discharging dust from inside the protective mechanism.

[0006] In the above technical solution, preferably, the convenient dust cleaning mechanism includes a dust collection cylinder, a push spring is provided inside the dust collection cylinder, a piston cylinder is slidably connected inside the dust collection cylinder, a push rod is fixedly connected to one end of the piston cylinder, multiple exhaust holes are opened at one end of the dust collection cylinder, an installation nozzle is fixedly connected to the other end of the dust collection cylinder, a return spring is provided inside the installation nozzle, a sliding frame is slidably connected inside the installation nozzle, a sealing column is fixedly connected to the inner side of the sliding frame, a universal shaping metal hose is fixedly connected to the other end of the installation nozzle, and an air baffle ring is fixedly connected to the other end of the installation nozzle.

[0007] In the above technical solution, preferably, the protection mechanism includes a connecting tube head, one end of which is fixedly connected to the end of the vacuum cleaner away from the exhaust port. Two mounting cylinders are fixedly connected to the outside of the connecting tube head. A plug is fixedly connected inside the mounting cylinder. A blocking rod is fixedly connected to the outside of the plug. A return spring is provided inside the mounting cylinder. A notch baffle is slidably connected inside the mounting cylinder. A connecting cylinder is fixedly connected to the end of the mounting cylinder away from the connecting tube head. A connecting rigid tube is fixedly connected inside the connecting cylinder. A protective airbag is fixedly connected to the other end of the connecting rigid tube.

[0008] In the above technical solution, preferably, the dust removal mechanism includes a dust removal pipe, one end of which is fixedly connected to the end of the protective airbag away from the connecting rigid pipe, and the other end of which is fixedly connected to a dust removal head. A rotating sleeve is rotatably connected to the outside of the dust removal pipe, and a torsion spring is provided inside the rotating sleeve. A dust removal port is opened at the end of the dust removal head away from the dust removal pipe, and an alignment opening is opened at the bottom of the rotating sleeve. One end of the torsion spring is fixedly connected to the inside of the rotating sleeve, and the other end of the torsion spring is fixedly connected to the outside of the dust removal head.

[0009] In the above technical solution, preferably, the disassembly and assembly mechanism includes an installation track. The bottom of the installation track is fixedly connected to the top of the handheld laser cutting gun. A sliding mounting sleeve is slidably connected to the outside of the installation track. The top of the sliding mounting sleeve is fixedly connected to the outside of the vacuum cleaner. Slots are provided on both sides of the sliding mounting sleeve. An insert plate is inserted into the inside of the installation track. A fixed cylinder is fixedly connected to the top side of the handheld laser cutting gun. A tension spring is provided inside the fixed cylinder. A sliding plate is slidably connected inside the fixed cylinder. A connecting crank is fixedly connected to the end of the sliding plate away from the tension spring. A blocking plate is fixedly connected to the other end of the connecting crank. Installation grooves are provided on both sides of the handheld laser cutting gun. Installation slides are slidably connected to the inside of the installation grooves. The outside of the installation slides is fixedly connected to the outside of the protective airbag. One end of the tension spring is fixedly connected to the inside of the fixed cylinder. The other end of the tension spring is fixedly connected to the end of the sliding plate away from the connecting crank.

[0010] In the above technical solution, preferably, one end of the reset spring is fixedly connected to one end of the vacuum cleaner, and the other end of the reset spring is fixedly connected to the end of the sliding frame near the vacuum cleaner.

[0011] In the above technical solution, preferably, one end of the push spring is fixedly connected to the inside of the vacuum cleaner cylinder, and the other end of the push spring is fixedly connected to the inside of the piston cylinder.

[0012] In the above technical solution, preferably, the push rod is externally slidably connected to the end of the vacuum cleaner away from the universal shaped metal hose, and the end of the push rod away from the piston cylinder is fixedly connected to a pull handle.

[0013] In the above technical solution, preferably, one end of the return spring is fixedly connected to the inside of the mounting cylinder, and the other end of the return spring is fixedly connected to the side of the notch baffle near the connecting cylinder.

[0014] In the above technical solution, preferably, a disassembly slot is provided on one side of the bottom of the insert plate, and the connecting crank is slidably connected to one end of the fixed cylinder.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This invention, through its convenient dust removal, protection, and dust exhaust mechanisms, can absorb smoke and dust during cutting, thereby preventing smoke and dust from obstructing the operator's vision. This helps to avoid cutting trajectory deviation and reduced cutting accuracy, thus reducing the scrap rate. At the same time, it prevents high-temperature dust from adhering to the nozzle and focusing lens surface, reducing lens wear and consequently lowering equipment maintenance and replacement costs. Furthermore, it avoids smoke and dust posing a risk to the operator's respiratory health, improving the safety of the device.

[0017] 2. This invention provides gas to the protective mechanism through a convenient dust removal mechanism, which allows the protective airbag to inflate. When the laser cutting gun is accidentally bumped and impacted, it can act as a buffer, thereby preventing the impact force from being transmitted to the inside of the laser cutting gun, protecting the laser cutting gun, and improving the service life of the laser cutting gun. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the dust collection cylinder of the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of the nozzle of the present invention;

[0021] Figure 4 This is a schematic diagram of the protective mechanism of the present invention;

[0022] Figure 5 This is a schematic diagram of the internal structure of the mounting cylinder of the present invention;

[0023] Figure 6 This is a schematic diagram of the notch baffle of the present invention;

[0024] Figure 7 This is a schematic diagram of the internal structure of the rotating outer casing of the present invention;

[0025] Figure 8 This is a schematic diagram of the structure of the sliding mounting sleeve of the present invention;

[0026] Figure 9 This is a schematic diagram of the structure for installing the track in this invention;

[0027] Figure 10 This is a schematic diagram of the internal structure of the fixing cylinder of the present invention;

[0028] Figure 11 This is a schematic diagram of the insert plate of the present invention.

[0029] In the diagram: 1. Handheld laser cutting gun; 2. Convenient dust removal mechanism; 201. Dust suction cylinder; 202. Push spring; 203. Piston cylinder; 204. Push rod; 205. Exhaust port; 206. Mounting nozzle; 207. Return spring; 208. Sliding frame; 209. Sealing post; 210. Air baffle ring; 211. Universal shaped metal hose; 212. Pull handle; 3. Protection mechanism; 301. Connecting pipe head; 302. Mounting cylinder; 303. Plug; 304. Blocking rod; 305. Return spring; 306. Notch baffle; 307. 308. Connecting cylinder; 309. Connecting rigid pipe; 4. Protective airbag; 401. Dust removal mechanism; 402. Dust removal pipe; 403. Dust removal head; 404. Rotating outer sleeve; 405. Torsion spring; 406. Dust removal port; 5. Assembly / disassembly mechanism; 501. Mounting rail; 502. Sliding mounting sleeve; 503. Slot; 504. Insert plate; 505. Fixing cylinder; 506. Tension spring; 507. Sliding plate; 508. Connecting crank; 509. Blocking plate; 510. Mounting slide groove; 511. Mounting slide bar; 512. Disassembly slot. Detailed Implementation

[0030] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0032] like Figures 1-11 The handheld laser cutting machine shown includes a handheld laser cutting gun 1. A disassembly and assembly mechanism 5 is fixed to the top of the handheld laser cutting gun 1. A convenient dust cleaning mechanism 2 is installed on the outside of the disassembly and assembly mechanism 5. The convenient dust cleaning mechanism 2 is used for dust removal. A protective mechanism 3 is provided on the outside of the handheld laser cutting gun 1. The protective mechanism 3 is used to protect the handheld laser cutting gun 1 and store dust. The disassembly and assembly mechanism 5 is used to conveniently install the convenient dust cleaning mechanism 2 and the protective mechanism 3. A dust discharge mechanism 4 is provided at one end of the protective mechanism 3. The dust discharge mechanism 4 is used to discharge the dust inside the protective mechanism 3.

[0033] The convenient dust removal mechanism 2 includes a vacuum tube 201, which provides an installation position and enables vacuuming. A push spring 202 is installed inside the vacuum tube 201, and a piston cylinder 203 is slidably connected inside the vacuum tube 201. The piston cylinder 203 can push out the air in the vacuum tube 201 and suck up dust. Simultaneously, the push spring 202 can use its elasticity to push the piston cylinder 203 to move. A pull rod 204 is fixedly connected to one end of the piston cylinder 203. 204 serves as a connector. One end of the vacuum cleaner 201 has multiple vent holes 205 for venting. The other end of the vacuum cleaner 201 is fixedly connected to a mounting nozzle 206, which provides the mounting position. A return spring 207 is installed inside the mounting nozzle 206. A sliding bracket 208 is slidably connected inside the mounting nozzle 206, providing the mounting position. A sealing post 209 is fixedly connected to the inner side of the sliding bracket 208. The other end of the mounting nozzle 206... One end of the nozzle 206 is fixedly connected to a universal shaped metal hose 211, and the other end of the nozzle 206 is fixedly connected to an air baffle ring 210. After the sealing post 209 slides into the air baffle ring 210, it prevents gas from entering. The return spring 207 can push the sliding frame 208 and the sealing post 209 towards the universal shaped metal hose 211 when there is no suction, causing the sealing post 209 to block the middle of the air baffle ring 210. One end of the return spring 207 is fixedly connected to one end of the vacuum cleaner cylinder 201. The other end of the spring 207 is fixedly connected to the end of the sliding frame 208 near the vacuum cleaner 201. One end of the push spring 202 is fixedly connected to the inside of the vacuum cleaner 201. The other end of the push spring 202 is fixedly connected to the inside of the piston cylinder 203. The outside of the pull rod 204 is slidably connected to the end of the vacuum cleaner 201 away from the universal shaping metal hose 211. The end of the pull rod 204 away from the piston cylinder 203 is fixedly connected to a handle 212, which can easily push the pull rod 204.

[0034] Before cutting, push the handle 212 and the lever 204 towards the universal metal hose 211. At this time, the smoke and dust previously sucked into the vacuum cleaner 201 will flow into the protective mechanism 3. When the piston cylinder 203 moves to the end of the vacuum cleaner 201 near the universal metal hose 211, the push spring 202 will be compressed. When cutting, release the handle 212. Under the elastic action of the push spring 202, the piston cylinder 203 will move away from the universal metal hose 211. At this time, the suction force is transmitted to the mounting nozzle 206, which in turn pulls the sliding frame 208 and the sealing post 209, causing the sealing post 209 to move out of the air baffle ring 210. The suction force is then transmitted to the universal metal hose 211. Because the air baffle ring 210... The diameter of the middle section is smaller, and the diameter of the universal shaped metal hose 211 at the end away from the mounting nozzle 206 is also smaller, which limits the gas flow rate and makes the piston cylinder 203 move slower. Therefore, the suction can be maintained for a period of time, thus allowing time for manual cutting. When the piston cylinder 203 moves to the side of the dust collection cylinder 201 away from the universal shaped metal hose 211, the dust collection ends. If cutting is required again, the dust discharge mechanism 4 is opened to discharge the dust absorbed in the protective mechanism 3 last time. After discharge, the handle 212 is pushed again to fill the interior of the protective mechanism 3 with gas and discharge the dust in the dust collection cylinder 201 into the protective mechanism 3, thus enabling another dust collection. If cutting is not required for the time being, the dust discharge mechanism 4 is not opened for the time being, keeping the protective mechanism 3 full of gas, thereby protecting the handheld laser cutting gun 1.

[0035] The protection mechanism 3 includes a connecting pipe head 301, which provides an installation position and can divert gas. One end of the connecting pipe head 301 is fixedly connected to the end of the vacuum cleaner 201 away from the exhaust port 205. Two mounting cylinders 302 are fixedly connected to the outside of the connecting pipe head 301, providing an installation position. A plug 303 is fixedly connected inside the mounting cylinder 302, and a blocking rod 304 is fixedly connected to the outside of the plug 303. A return spring 305 is provided inside the mounting cylinder 302, and a notch baffle 306 is slidably connected inside the mounting cylinder 302. The plug 303 can block the notch of the notch baffle 306, thereby preventing gas from being sucked in. The return spring 305 can push the notch baffle 306 towards the plug 303 when there is no exhaust. When pushed in a direction, the blocking rod 304 can block the notch baffle 306, preventing the notch baffle 306 from moving past the plug block 303. The end of the mounting cylinder 302 away from the connecting pipe head 301 is fixedly connected to the connecting cylinder 307, which has a connecting function. The connecting cylinder 307 is fixedly connected to the inside of the connecting cylinder 307, which has a connecting function for ventilation. The other end of the connecting cylinder 308 is fixedly connected to the protective airbag 309. The protective airbag 309 can expand after being filled with gas, and the protective airbag 309 itself is elastic and can shrink after the gas is discharged. One end of the return spring 305 is fixedly connected to the inside of the mounting cylinder 302, and the other end of the return spring 305 is fixedly connected to the side of the notch baffle 306 near the connecting cylinder 307.

[0036] When the gas in the vacuum cleaner 201 is discharged outward, the gas first enters the interior of the connecting tube head 301 and then flows from the connecting tube head 301 into the interior of the two mounting tubes 302, pushing the notch baffle 306 towards the connecting tube 307. This causes the notch of the notch baffle 306 to move away from the outside of the plug block 303. At this time, the gas and dust are discharged into the interior of the connecting tube 307 through the notch of the notch baffle 306 and into the interior of the protective airbag 309 through the connecting rigid tube 308. This causes the protective airbag 309 to inflate and store the dust inside. When the dust removal mechanism 4 is activated, the dust and gas will be discharged through the dust removal mechanism 4 under the elastic action of the protective airbag 309. If the dust and gas are not completely discharged, they can be discharged by squeezing the protective airbag 309.

[0037] Dust removal mechanism 4 includes a dust removal pipe 401, which provides ventilation. One end of the dust removal pipe 401 is fixedly connected to the end of the protective airbag 309 away from the connecting rigid pipe 308. The other end of the dust removal pipe 401 is fixedly connected to a dust removal head 402, which provides an installation position. A rotating sleeve 403 is rotatably connected to the outside of the dust removal pipe 401. A torsion spring 404 is installed inside the rotating sleeve 403. A dust removal port 405 is opened at the end of the dust removal head 402 away from the dust removal pipe 401. The bottom of 03 is provided with an alignment port 406. When the rotating outer sleeve 403 rotates, the alignment port 406 aligns with the dust discharge port 405 to exhaust gas and smoke. When the rotating outer sleeve 403 is released, the reaction force of the torsion spring 404 causes the rotating outer sleeve 403 to rotate in reverse, and the alignment port 406 and the dust discharge port 405 are misaligned, so that gas and smoke can be discharged. One end of the torsion spring 404 is fixedly connected to the inside of the rotating outer sleeve 403, and the other end of the torsion spring 404 is fixedly connected to the outside of the dust discharge head 402.

[0038] Rotating the outer sleeve 403 causes the alignment port 406 to rotate. Simultaneously, the rotation of the outer sleeve 403 compresses the torsion spring 404. When the alignment port 406 aligns with the dust discharge port 405, smoke and gas are discharged through the dust discharge pipe 401, dust discharge head 402, dust discharge port 405, and alignment port 406. When the outer sleeve 403 is released, the reaction force of the torsion spring 404 causes the outer sleeve 403 to rotate in reverse, thereby causing the alignment port 406 to rotate and offset from the dust discharge port 405. Therefore, the outer sleeve 403 can block the dust discharge port 405, thereby closing the dust discharge mechanism 4.

[0039] The disassembly and assembly mechanism 5 includes a mounting rail 501. The bottom of the mounting rail 501 is fixedly connected to the top of the handheld laser cutting gun 1. A sliding mounting sleeve 502 is slidably connected to the outside of the mounting rail 501. After the sliding mounting sleeve 502 slides outside the mounting rail 501, the convenient dust cleaning mechanism 2 can be installed on the top of the handheld laser cutting gun 1. The top of the sliding mounting sleeve 502 is fixedly connected to the outside of the dust collection cylinder 201. Slots 503 are provided on both sides of the sliding mounting sleeve 502. One slot 503 penetrates the sliding mounting sleeve 502, and the other slot is provided on the sliding... The inner wall of the mounting sleeve 502 is not penetrated. An insert plate 504 is inserted into the interior of the mounting rail 501. The insert plate 504 is inserted through a through slot 503 and passes through the interior of the mounting rail 501, then inserts into another non-through slot 503. This allows the sliding mounting sleeve 502 to be mounted on the outside of the mounting rail 501. A fixing cylinder 505 is fixedly connected to one side of the top of the handheld laser cutting gun 1. The fixing cylinder 505 provides the mounting position. A tension spring 506 is installed inside the fixing cylinder 505. A sliding plate 507 is slidably connected inside the fixing cylinder 505, and the sliding plate 507 serves a limiting function. A connecting crank 508 is fixedly connected to one end of the sliding plate 507 away from the tension spring 506, and a blocking plate 509 is fixedly connected to the other end of the connecting crank 508. The connecting crank 508 connects the sliding plate 507 and the blocking plate 509, and the blocking plate 509 can block the outside of the through slot 503, thereby preventing the insert plate 504 from moving out of the mounting track 501 and the sliding mounting sleeve 502. Mounting grooves 510 are provided on both sides of the handheld laser cutting gun 1. Mounting strips 511 are slidably connected inside the mounting grooves 510. After the mounting strips 511 slide into the mounting grooves 510... The protective airbag 309 can be installed on the outside of the handheld laser cutting gun 1. The external mounting strip 511 is fixedly connected to the outside of the protective airbag 309. One end of the tension spring 506 is fixedly connected to the inside of the fixed cylinder 505. The other end of the tension spring 506 is fixedly connected to the end of the sliding plate 507 away from the connecting crank 508. A disassembly slot 512 is provided on the bottom side of the insert plate 504. The disassembly slot 512 makes it easy to use a fingernail or a small and long object to pick out the insert plate 504 from the inside of the mounting track 501 and the sliding mounting sleeve 502. The connecting crank 508 is slidably connected to one end of the fixed cylinder 505.

[0040] When disassembling the convenient dust removal mechanism 2 and the protective mechanism 3, first move the connecting crank 508 away from the tension spring 506. This will cause the sliding plate 507 to move away from the tension spring 506, thereby stretching the tension spring 506 using the sliding plate 507. This will also allow the blocking plate 509 to leave the outer wall of the slot 503 through which the sliding mounting sleeve 502 passes. At this point, the end of the insert plate 504 with the disassembly slot 512 is unobstructed, and the insert plate 504 can be pulled out of the mounting track 501 using the disassembly slot 512. Inside the slot 503, when the obstruction of the insert plate 504 is removed, the convenient dust removal mechanism 2 and the sliding mounting sleeve 502 can slide towards the laser emitting end of the handheld laser cutting gun 1, thereby driving the connecting rigid tube 308 and the protective airbag 309 to slide, which in turn drives the mounting slide bar 511 to slide. When the sliding mounting sleeve 502 slides out of the mounting track 501 and the mounting slide bar 511 slides out of the mounting groove 510, the convenient dust removal mechanism 2, the protective mechanism 3, and the dust removal mechanism 4 can be quickly activated. When disassembling and installing the convenient dust removal mechanism 2, protection mechanism 3, and dust removal mechanism 4, first align the mounting slide 511 with the mounting groove 510, align the sliding mounting sleeve 502 with the mounting rail 501, and slide it in, so that the sliding mounting sleeve 502 can be installed on the outside of the mounting rail 501. At this time, insert the insert plate 504 through the slot 503 on the sliding mounting sleeve 502, so that the insert plate 504 passes through the inside of the mounting rail 501. When the end of the insert plate 504 away from the disassembly slot 512 is inserted into the sliding mounting sleeve 502, it should not be too far inward. With the insert plate 504 fully submerged in the through slot 503, the blocking plate 509 is released. Under the tension of the tension spring 506, the sliding plate 507, connecting crank 508, and blocking plate 509 can slide towards one end of the tension spring 506. This allows the blocking plate 509 to block the insert plate 504 when it is positioned outside the sliding mounting sleeve 502 in the through slot 503. This completes the installation of the convenient dust removal mechanism 2, the protection mechanism 3, and the dust removal mechanism 4.

[0041] Working principle: Before cutting, push the handle 212 and the pull rod 204 towards the universal shaped metal hose 211. At this time, the smoke and dust previously sucked into the vacuum cylinder 201 can enter the protective mechanism 3 along with the air flow. When the piston cylinder 203 moves to the end of the vacuum cylinder 201 close to the universal shaped metal hose 211, the push spring 202 will be squeezed. When cutting, release the handle 212. At this time, under the elastic action of the push spring 202, the piston cylinder 203 can be pushed to move away from the universal shaped metal hose 211. At this time, the suction force is transmitted to the inside of the mounting nozzle 206, which can then pull the sliding frame 208 and the sealing post 209, and cause the sealing post 209 to move out of the air baffle ring 210. At this time, the suction force can be transmitted to the inside of the universal shaped metal hose 211. The diameter of the middle part of 210 is smaller, and the diameter of the universal shaped metal hose 211 at the end away from the mounting nozzle 206 is also smaller, which limits the gas flow rate and makes the piston cylinder 203 move slower. Therefore, the suction can be sustained for a period of time, thus allowing time for manual cutting. When the piston cylinder 203 moves to the side of the dust collection cylinder 201 away from the universal shaped metal hose 211, the dust collection ends. If cutting is required again, the dust discharge mechanism 4 is opened to discharge the smoke and dust absorbed in the protection mechanism 3 last time. After discharge, the pull handle 212 is pushed again to fill the interior of the protection mechanism 3 with gas and discharge the smoke and dust in the dust collection cylinder 201 into the protection mechanism 3, thus enabling another dust collection. If cutting is not required for the time being, the dust discharge mechanism 4 is not opened for the time being, keeping the protection mechanism 3 full of gas, thereby protecting the handheld laser cutting gun 1.

[0042] When the gas in the vacuum cleaner 201 is discharged outward, the gas first enters the interior of the connecting tube head 301 and then flows from the connecting tube head 301 into the interior of the two mounting tubes 302, pushing the notch baffle 306 towards the connecting tube 307. This causes the notch of the notch baffle 306 to move away from the outside of the plug block 303. At this time, the gas and dust are discharged into the interior of the connecting tube 307 through the notch of the notch baffle 306 and into the interior of the protective airbag 309 through the connecting rigid tube 308. This causes the protective airbag 309 to inflate and store the dust inside. When the dust removal mechanism 4 is activated, the dust and gas will be discharged through the dust removal mechanism 4 under the elastic action of the protective airbag 309. If the dust and gas are not completely discharged, they can be discharged by squeezing the protective airbag 309.

[0043] Rotating the outer sleeve 403 will cause the alignment port 406 to rotate. At the same time, the rotation of the outer sleeve 403 will compress the torsion spring 404. After the alignment port 406 aligns with the dust discharge port 405, the smoke and gas will be discharged through the dust discharge pipe 401, dust discharge head 402, dust discharge port 405 and alignment port 406. When the outer sleeve 403 is released, the reaction force of the torsion spring 404 will cause the outer sleeve 403 to rotate in reverse, thereby causing the alignment port 406 to rotate and offset from the dust discharge port 405. Therefore, the outer sleeve 403 can block the dust discharge port 405, thereby closing the dust discharge mechanism 4.

[0044] When disassembling the convenient dust removal mechanism 2 and the protective mechanism 3, first move the connecting crank 508 away from the tension spring 506. This will cause the sliding plate 507 to move away from the tension spring 506, thereby stretching the tension spring 506 using the sliding plate 507. This will also allow the blocking plate 509 to leave the outer wall of the slot 503 through which the sliding mounting sleeve 502 passes. At this point, the end of the insert plate 504 with the disassembly slot 512 is unobstructed, and the insert plate 504 can be pulled out of the mounting track 501 using the disassembly slot 512. Inside the slot 503, when the obstruction of the insert plate 504 is removed, the convenient dust removal mechanism 2 and the sliding mounting sleeve 502 can slide towards the laser emitting end of the handheld laser cutting gun 1, thereby driving the connecting rigid tube 308 and the protective airbag 309 to slide, which in turn drives the mounting slide bar 511 to slide. When the sliding mounting sleeve 502 slides out of the mounting track 501 and the mounting slide bar 511 slides out of the mounting groove 510, the convenient dust removal mechanism 2, the protective mechanism 3, and the dust removal mechanism 4 can be quickly activated. When disassembling and installing the convenient dust removal mechanism 2, protection mechanism 3, and dust removal mechanism 4, first align the mounting slide 511 with the mounting groove 510, align the sliding mounting sleeve 502 with the mounting rail 501, and slide it in, so that the sliding mounting sleeve 502 can be installed on the outside of the mounting rail 501. At this time, insert the insert plate 504 through the slot 503 on the sliding mounting sleeve 502, so that the insert plate 504 passes through the inside of the mounting rail 501. When the end of the insert plate 504 away from the disassembly slot 512 is inserted into the sliding mounting sleeve 502, it should not be too far inward. With the insert plate 504 fully submerged in the through slot 503, the blocking plate 509 is released. Under the tension of the tension spring 506, the sliding plate 507, connecting crank 508, and blocking plate 509 can slide towards one end of the tension spring 506. This allows the blocking plate 509 to block the insert plate 504 when it is positioned outside the sliding mounting sleeve 502 in the through slot 503. This completes the installation of the convenient dust removal mechanism 2, the protection mechanism 3, and the dust removal mechanism 4.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A user-friendly handheld laser cutting machine, comprising a handheld laser cutting gun (1), characterized in that, The top of the handheld laser cutting gun (1) is fixed with a disassembly and assembly mechanism (5). A convenient dust removal mechanism (2) is installed on the outside of the disassembly and assembly mechanism (5). The convenient dust removal mechanism (2) is used for dust removal. A protective mechanism (3) is provided on the outside of the handheld laser cutting gun (1). The protective mechanism (3) is used to protect the handheld laser cutting gun (1) and store dust. The disassembly and assembly mechanism (5) is used to conveniently install the convenient dust removal mechanism (2) and the protective mechanism (3). A dust discharge mechanism (4) is provided at one end of the protective mechanism (3). The dust discharge mechanism (4) is used to discharge the dust inside the protective mechanism (3).

2. The handheld laser cutting machine for easy operation according to claim 1, characterized in that, The convenient dust removal mechanism (2) includes a dust collection cylinder (201), a push spring (202) is provided inside the dust collection cylinder (201), a piston cylinder (203) is slidably connected inside the dust collection cylinder (201), a push rod (204) is fixedly connected to one end of the piston cylinder (203), a plurality of exhaust holes (205) are opened at one end of the dust collection cylinder (201), an installation nozzle (206) is fixedly connected to the other end of the dust collection cylinder (201), a return spring (207) is provided inside the installation nozzle (206), a sliding frame (208) is slidably connected inside the installation nozzle (206), a sealing column (209) is fixedly connected to the inner side of the sliding frame (208), a universal shaping metal hose (211) is fixedly connected to the other end of the installation nozzle (206), and an air baffle ring (210) is fixedly connected inside the other end of the installation nozzle (206).

3. The handheld laser cutting machine for easy operation according to claim 2, characterized in that, The protective mechanism (3) includes a connecting tube head (301), one end of which is fixedly connected to the end of the vacuum cleaner (201) away from the exhaust port (205). Two mounting cylinders (302) are fixedly connected to the outside of the connecting tube head (301). A plug (303) is fixedly connected inside the mounting cylinder (302). A blocking rod (304) is fixedly connected to the outside of the plug (303). A return spring (305) is provided inside the mounting cylinder (302). A notch baffle (306) is slidably connected inside the mounting cylinder (302). A connecting cylinder (307) is fixedly connected to the end of the mounting cylinder (302) away from the connecting tube head (301). A connecting rigid tube (308) is fixedly connected inside the connecting cylinder (307). A protective airbag (309) is fixedly connected to the other end of the connecting rigid tube (308).

4. The handheld laser cutting machine for easy operation according to claim 3, characterized in that, The dust removal mechanism (4) includes a dust removal pipe (401), one end of which is fixedly connected to the end of the protective airbag (309) away from the connecting hard pipe (308), and the other end of which is fixedly connected to a dust removal head (402). A rotating sleeve (403) is rotatably connected to the outside of the dust removal pipe (401). A torsion spring (404) is provided inside the rotating sleeve (403). A dust removal port (405) is opened at the end of the dust removal head (402) away from the dust removal pipe (401). An alignment port (406) is opened at the bottom of the rotating sleeve (403). One end of the torsion spring (404) is fixedly connected to the inside of the rotating sleeve (403), and the other end of the torsion spring (404) is fixedly connected to the outside of the dust removal head (402).

5. A convenient handheld laser cutting machine according to claim 3, characterized in that, The disassembly and assembly mechanism (5) includes an installation rail (501). The bottom of the installation rail (501) is fixedly connected to the top of the handheld laser cutting gun (1). A sliding mounting sleeve (502) is slidably connected to the outside of the installation rail (501). The top of the sliding mounting sleeve (502) is fixedly connected to the outside of the vacuum cleaner (201). Slots (503) are provided on both sides of the sliding mounting sleeve (502). An insert plate (504) is inserted into the inside of the installation rail (501). A fixing cylinder (505) is fixedly connected to one side of the top of the handheld laser cutting gun (1). A tension spring (506) is provided inside the fixing cylinder (505). The inside of the fixing cylinder (505) slides... A sliding plate (507) is connected to the sliding plate (507). A connecting crank (508) is fixedly connected to one end of the sliding plate (507) away from the tension spring (506). A blocking plate (509) is fixedly connected to the other end of the connecting crank (508). A mounting groove (510) is provided on both sides of the handheld laser cutting gun (1). A mounting strip (511) is slidably connected inside the mounting groove (510). The mounting strip (511) is fixedly connected to the outside of the protective airbag (309). One end of the tension spring (506) is fixedly connected to the inside of the fixed cylinder (505). The other end of the tension spring (506) is fixedly connected to the end of the sliding plate (507) away from the connecting crank (508).

6. A convenient handheld laser cutting machine according to claim 2, characterized in that, One end of the return spring (207) is fixedly connected to one end of the vacuum cleaner (201), and the other end of the return spring (207) is fixedly connected to one end of the sliding frame (208) near the vacuum cleaner (201).

7. A convenient handheld laser cutting machine according to claim 2, characterized in that, One end of the push spring (202) is fixedly connected to the inside of the vacuum cleaner (201), and the other end of the push spring (202) is fixedly connected to the inside of the piston cylinder (203).

8. A convenient handheld laser cutting machine according to claim 2, characterized in that, The push rod (204) is externally slidably connected to one end of the vacuum cleaner (201) away from the universal shaped metal hose (211), and a pull handle (212) is fixedly connected to one end of the push rod (204) away from the piston cylinder (203).

9. A convenient handheld laser cutting machine according to claim 3, characterized in that, One end of the return spring (305) is fixedly connected to the inside of the mounting cylinder (302), and the other end of the return spring (305) is fixedly connected to the side of the notch baffle (306) near the connecting cylinder (307).

10. A convenient handheld laser cutting machine according to claim 5, characterized in that, The bottom side of the insert plate (504) is provided with a disassembly slot (512), and the connecting crank (508) is slidably connected to one end of the fixed cylinder (505).

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