Self-winding tube laser cutting device

Abstract

This invention discloses a self-winding tube laser cutting device, relating to the technical field of laser cutting. It includes a laser cutting device body with a fume filtration mechanism on the side of the laser. The fume filtration mechanism includes a cylinder, a suction pipe, a filter element, and a reciprocating screw. The cylinder is located on the side of the laser, and the suction pipe is located outside the cylinder and communicates with it. A valve is installed on the discharge pipe at the bottom of the cylinder. The filter element is located inside the cylinder, and an exhaust pipe extends from the top of the filter element to the outside of the cylinder. A ring is fitted around the outside of the filter element, and a cleaning brush is installed on the inner wall of the ring. A cleaning assembly is located on the top of the ring. This device utilizes the kinetic energy of air drawn in by an air pump, which drives the reciprocating screw via a turbine and bevel gear. This drives the cleaning brush and scraper assembly to perform dual self-cleaning of the filter element through mechanical scraping and air blowing, simultaneously purifying the fume to protect the laser optical components. Waste residue is collected and settled before being discharged through a bottom valve, preventing secondary dust generation and ensuring safety and environmental protection.

Description

Technical Field

[0001] This invention relates to the field of laser cutting technology, and more specifically to a self-winding tube laser cutting device. Background Technology

[0002] Self-winding tubes are commonly used protective accessories in the wire harness processing field, and laser cutting is the mainstream material cutting method. When laser cutting self-winding tubes made of materials such as PVC, the high temperature causes the material to continuously generate a large amount of dust, fumes, and corrosive harmful gases. These pollutants directly diffuse into the workshop environment, not only harming the respiratory system of on-site operators and posing occupational health risks, but also easily adhering to the surface of precision optical components such as lasers and laser lenses, causing optical path contamination, leading to problems such as laser energy attenuation and reduced cutting accuracy, while accelerating the aging and damage of precision components and increasing equipment maintenance costs.

[0003] Existing fume filtration devices for laser cutting mostly employ a simple structure consisting of a ventilation system and a single filter element. During continuous use, dust and impurities accumulate on the filter element's surface, gradually clogging it and directly causing a significant decrease in fume extraction and filtration efficiency. Traditional filtration devices generally lack automatic cleaning functions; once the filter element becomes clogged, cutting operations must be suspended, and the filter element must be manually disassembled for cleaning or replacement. This not only interrupts continuous production and reduces processing efficiency but also easily generates secondary dust during manual cleaning, and operators are directly exposed to harmful dust, resulting in poor safety protection. Summary of the Invention

[0004] The purpose of this invention is to provide a self-winding tube laser cutting device to overcome the shortcomings of existing laser cutting fume filtration devices, which mostly employ a simple structure of exhaust and a single filter element. During continuous use, dust and impurities accumulate on the surface of the filter element, gradually clogging it and directly causing a significant decrease in fume extraction and filtration efficiency. Furthermore, traditional filtration devices generally lack automatic cleaning functions; once the filter element becomes clogged, cutting operations must be suspended, and the filter element must be manually disassembled for cleaning or replacement. This not only interrupts continuous production and reduces processing efficiency, but also easily generates secondary dust during manual cleaning, and operators are directly exposed to harmful dust, resulting in poor safety protection.

[0005] A self-winding tube laser cutting device includes a laser cutting device body, wherein the side of the laser of the laser cutting device body is provided with a fume filter mechanism for absorbing the smoke and dust generated during the laser cutting process. The flue gas filtration mechanism includes a cylinder, an intake pipe, a filter element, and a reciprocating screw. The cylinder is located on the side of the laser, the intake pipe is located on the outside of the cylinder and communicates with the cylinder, a valve is installed on the discharge pipe at the bottom of the cylinder, the filter element is located in the cylinder, and the top of the filter element has an exhaust pipe extending out of the cylinder. The exhaust pipe is connected to the intake port of the air pump through a hose. An annular body is fitted on the outside of the filter element. The reciprocating screw is rotatably connected to the cylinder and has a bevel gear at its upper end. A rotating shaft is rotatably connected to the exhaust pipe. A turbine is located at the inner end of the rotating shaft and a bevel gear meshing with bevel gear at the outer end of the rotating shaft. The annular body is slidably connected to a sliding rod in the cylinder and is screwed to the reciprocating screw through a screw nut. A cleaning brush is provided on the inner wall of the annular body, and a cleaning assembly is provided on the top of the annular body.

[0006] Furthermore, the rotating shaft is rotatably connected to a fixed plate at the top of the cylinder.

[0007] Furthermore, the intake pipe is a corrugated pipe.

[0008] Furthermore, the suction end of the suction pipe is provided with a suction nozzle.

[0009] Furthermore, the suction pipe is connected to the cylinder via a bend.

[0010] Furthermore, the cleaning brush is evenly distributed along the circumference of the ring body.

[0011] Furthermore, the cleaning assembly includes a rotating ring, scrapers, and air vanes. The rotating ring is rotatably connected to the top of the ring body. Several scrapers are evenly distributed along the top circumference of the rotating ring. The upper end of each scraper is provided with a scraping surface that mates with the outer side of the filter element. Each scraper is provided with an air vane.

[0012] Furthermore, the outer side of the cylinder is connected to the side of the laser via a mounting plate.

[0013] Furthermore, several connecting plates that connect to the inner wall of the cylinder are evenly distributed along the lower circumference of the filter element.

[0014] The beneficial effects achieved by this invention are as follows: 1. The flue gas filtration mechanism of this application uses the airflow formed by the air pump to drive the turbine to rotate, and then drives the reciprocating screw through the bevel gear transmission. It relies on the existing airflow energy to achieve automatic cleaning of the filter element, without the need to add an additional drive motor, which simplifies the equipment structure and reduces the energy consumption of the whole machine.

[0015] 2. The ring body of this application reciprocates up and down with the reciprocating screw, and the cleaning brushes evenly distributed on its outer circumference can thoroughly sweep the outer wall of the filter element. Combined with the scraper and air vane on the rotating ring, this forms a multi-stage cleaning method of mechanical scraping and air blowing, which can thoroughly remove impurities adhering to the filter element surface, effectively prevent filter element clogging, and maintain a stable filtration effect over a long period. The device can achieve automatic cleaning without stopping the machine, eliminating the need for frequent manual disassembly and maintenance, ensuring continuous laser cutting operations, and significantly improving production efficiency.

[0016] 3. The complete filtration structure of this application can collect and purify the fumes and harmful exhaust gases generated during cutting, improving the workshop working environment, protecting the health of operators, preventing fumes from contaminating laser optical components, protecting core equipment such as lasers, extending equipment lifespan, and stabilizing cutting precision. The filtered waste residue is collected at the bottom of the cylinder and can be periodically discharged through a bottom valve. This simple operation avoids secondary dust generation during waste residue cleaning, enhancing operational safety. Attached Figure Description

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0019] Figure 3 This is a schematic diagram of the flue gas filtration mechanism of the present invention.

[0020] Figure 4 This is a schematic diagram of the flue gas filtration mechanism of the present invention.

[0021] Figure 5 This is a schematic diagram of the structure of the ring body and cleaning component of the present invention.

[0022] Figure 6 This is a schematic diagram of the scraper and air deflector of the present invention.

[0023] The reference numerals in the attached drawings are explained as follows: 1. Laser cutting device body; 2. Laser; 3. Flue gas filtration mechanism; 31. Cylinder; 311. Valve; 32. Suction pipe; 321. Bend; 322. Suction nozzle; 33. Filter element; 331. Exhaust pipe; 332. Connecting plate; 34. Ring; 341. Cleaning brush; 35. Bevel gear one; 36. Rotating shaft; 361. Bevel gear two; 362. Turbine; 363. Fixing plate; 37. Slide rod; 38. Reciprocating screw; 39. Cleaning assembly; 391. Rotating ring; 392. Scraper; 393. Air vane. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] like Figure 1-6 As shown, the present invention provides a self-winding tube laser cutting device, including a laser cutting device body 1, wherein the laser 2 of the laser cutting device body 1 is provided with a fume filter mechanism 3 for absorbing the smoke and dust generated during the laser cutting process. In addition, the flue gas filtration mechanism 3 includes a cylinder 31, an air intake pipe 32, a filter element 33, and a reciprocating screw 38. The outer side of the cylinder 31 is connected to the side of the laser 2 through a mounting plate. The air intake pipe 32 is located on the outer side of the cylinder 31 and is connected to the cylinder 31 through a bend 321. The air intake pipe 32 is a corrugated pipe, and the air intake end of the air intake pipe 32 is provided with an air intake nozzle 322, which allows the air intake nozzle 322 to be adjusted in multiple angles and positions. However, a valve 311 is installed on the bottom discharge pipe of the cylinder 31. The filter element 33 is disposed in the cylinder 31, and several connecting plates 332 connected to the inner wall of the cylinder 31 are evenly distributed along the lower circumference of the filter element 33, so that the filter element 33 can be more stably connected in the cylinder 31. The top of the filter element 33 is provided with an exhaust pipe 331 extending out of the cylinder 31. The exhaust pipe 331 is connected to the air inlet of the air pump through a hose. The outer side of the filter element 33 is sleeved The device includes a ring body 34. The reciprocating screw 38 is rotatably connected to the cylinder 31 and has a bevel gear 35 at its upper end. A rotating shaft 36 is rotatably connected to the exhaust pipe 331. The rotating shaft 36 is rotatably connected to the fixed plate 363 at the top of the cylinder 31, providing stable axial support and radial positioning for the rotation of the rotating shaft 36. The rotating shaft 36 has a turbine 362 at the inner end of the exhaust pipe 331 and a bevel gear 361 at the outer end of the rotating shaft 36 that meshes with the bevel gear 35. It is worth noting that the ring body 34 is slidably connected to the slide rod 37 in the cylinder 31 and screwed to the reciprocating screw 38 through the screw nut. The inner wall of the ring body 34 is provided with a cleaning brush 341, which is evenly distributed along the circumference of the ring body 34. This ensures that the cleaning brush 341 and the outer surface of the filter element 33 form a full circumferential contact, so that when the ring body 34 reciprocates, it can clean the surface of the filter element 360° without dead angles. The dust removal effect is more thorough and uniform, avoiding uneven filtration resistance caused by local dust accumulation and maintaining the stability of the permeability of the filter element.

[0026] In addition, a cleaning assembly 39 is provided at the top of the ring body 34. The cleaning assembly 39 includes a rotating ring 391, a scraper 392 and a wind vane 393. The rotating ring 391 is rotatably connected to the top of the ring body 34. Several scrapers 392 are evenly distributed along the top circumference of the rotating ring 391. The upper end of the scraper 392 is provided with a scraping surface that cooperates with the outer side of the filter element 33. Each scraper 392 is provided with a wind vane 393. The filter element 33 actively absorbs cutting fumes through the suction pipe 32, achieving gas-solid separation. The exhaust airflow drives the turbine 362, which in turn rotates the reciprocating screw 38 via a bevel gear transmission. This, in turn, drives the ring 34 with a cleaning brush 341 to reciprocate up and down on the outer wall of the filter element 33. This design utilizes gas as a power source to automatically clean accumulated dust from the filter element, effectively preventing clogging, extending maintenance cycles, and ensuring continuous and efficient negative pressure adsorption during laser cutting. It solves the industry pain point of easy filter clogging in laser cutting fume treatment. Detailed implementation methods and principles: When working, the laser cutting device body 1 is started, and the laser 2 of the laser cutting device body 1 performs laser cutting on the self-winding tube. During the operation, smoke and exhaust gas are continuously generated. At the same time, the air pump is turned on. The air pump creates negative pressure on the exhaust pipe 331 through the hose. The smoke generated by cutting is sucked in through the air nozzle 322 at the end of the air suction pipe 32 and transported to the inside of the cylinder 31 through the corrugated air suction pipe 32 and the bend pipe 321. The dust-laden flue gas entering the cylinder 31 flows upward and passes through the vertically arranged filter element 33 inside the cylinder 31. The filter element 33 intercepts and filters the dust and harmful impurities in the flue gas. The purified gas continues to rise and flows out from the exhaust pipe 331 connected to the top of the filter element 33, and is finally discharged by the air pump through the hose. When the airflow passes through the interior of the exhaust pipe 331, it drives the built-in turbine 362 to rotate. The turbine 362 drives the rotating shaft 36 to rotate synchronously. The bevel gear 361 at the outer end of the rotating shaft 36 rotates accordingly and meshes with the bevel gear 35 to rotate. Finally, it drives the reciprocating screw 38 inside the cylinder 31 to rotate continuously. The ring 34 cooperates with the reciprocating screw 38 through the screw nut. At the same time, under the guiding and limiting action of the slide bar 37, it moves up and down in a reciprocating linear motion with the rotation of the reciprocating screw 38. As the ring 34 moves up and down, the cleaning brushes 341, which are evenly distributed around its inner circumference, sweep back and forth against the outer wall of the filter element 33 to remove dust and impurities adhering to the surface of the filter element 33. At the same time, the cleaning component 39 at the top of the ring 34 works synchronously: the rotating ring 391 moves with the ring 34 under the action of the gas, and the scraper 392 on it further scrapes away stubborn deposits on the outer wall of the filter element 33 with the help of the scraping surface. The air vane 393 on the scraper 392 generates auxiliary wind force under the action of airflow to blow away loose impurities, thus completing the cleaning of the filter element 33. The dust and impurities that are cleaned off fall to the bottom of the cylinder 31 under the action of gravity and accumulate. When the waste residue inside the cylinder accumulates to a certain amount, the valve 311 on the discharge pipe at the bottom of the cylinder 31 is opened to discharge the waste residue. After the discharge is completed, the valve 311 is closed.

[0027] In summary, the flue gas filtration mechanism 3 of this application utilizes the airflow generated by the air pump drawing in the flue gas to drive the turbine 362, which in turn drives the reciprocating screw 38 through bevel gear transmission. It achieves automatic cleaning of the filter element by relying on existing airflow energy, eliminating the need for an additional drive motor, thus simplifying the equipment structure and reducing overall energy consumption. The ring 34 reciprocates up and down with the reciprocating screw 38, and its evenly distributed cleaning brushes 341 thoroughly sweep the outer wall of the filter element 33. Combined with the scraper 392 and air vane 393 on the rotating ring 391, a multi-stage cleaning method of mechanical scraping and airflow is formed, thoroughly removing impurities adhering to the filter element surface, effectively preventing filter element clogging, and maintaining a stable filtration effect over a long period. The device can achieve automatic cleaning without stopping the machine, eliminating the need for frequent manual disassembly and maintenance, ensuring continuous laser cutting operations, and significantly improving production efficiency. The entire filtration system can collect and purify the fumes and harmful gases generated during cutting, improving the workshop working environment, protecting the health of operators, preventing fumes from contaminating laser optical components, protecting core equipment such as the laser, extending equipment lifespan, and stabilizing cutting precision. The filtered waste residue is collected at the bottom of the cylinder 31 and can be periodically and uniformly discharged through the bottom valve 311. This simple operation avoids secondary dust generation during waste residue cleaning, enhancing operational safety.

[0028] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0031] Throughout the entire text of this invention, the terms "several" and "more than" are uniformly interpreted as two or more quantity standards. If any clause in the text provides a clear and specific explanation, that specific definition shall prevail, and the foregoing interpretation shall not apply. Meanwhile, the ordinal terms "first" and "second" used in this invention are intended solely to distinguish and identify different components, structures, or process steps. These terms do not imply any difference in relative importance or hierarchy between corresponding structures or steps, nor do they define a fixed order of arrangement or hierarchical relationship between objects.

[0032] The technical details not described in this specification, such as the physical structure of the components, the logical relationships between the components, and the complete process flow for machining and assembling the whole machine, all belong to common and conventional technical means known and mastered by those skilled in the art. Those skilled in the art do not need to invest additional innovative research and development or creative effort in this part; they can completely replicate and implement it using only industry-standard technical knowledge. Therefore, to save space, this part of the common technical content will not be described in detail here.

[0033] The various directional terms used throughout this invention encompass spatial descriptions such as up, down, left, right, front, back, inner, outer, circumferential, and axial. All directional descriptions are defined with the standard placement and normal operational status of the corresponding equipment as a unified reference benchmark. The core purpose of setting up these directional terms is solely to clearly and intuitively clarify and distinguish the relative spatial relationships between the various structural components within the equipment. They only serve to aid in understanding the technical solution and do not restrict or constrain the overall scope of legal protection of this invention's patent rights.

[0034] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A self-winding tube laser cutting device, comprising a laser cutting device body (1), characterized in that: The laser (2) side of the laser cutting device body (1) is provided with a fume filtration mechanism (3) for absorbing the smoke and dust generated during the laser cutting process. The flue gas filtration mechanism (3) includes a cylinder (31), an intake pipe (32), a filter element (33), and a reciprocating screw (38). The cylinder (31) is located on the side of the laser (2). The intake pipe (32) is located outside the cylinder (31) and communicates with the cylinder (31). A valve (311) is installed on the bottom discharge pipe of the cylinder (31). The filter element (33) is located inside the cylinder (31). The top of the filter element (33) is provided with an exhaust pipe (331) extending out of the cylinder (31). The exhaust pipe (331) is connected to the intake port of the air pump through a hose. An annular ring is fitted around the outside of the filter element (33). (34) The reciprocating screw (38) is rotatably connected to the cylinder (31) and a bevel gear (35) is provided at its upper end. A rotating shaft (36) is rotatably connected to the exhaust pipe (331). A turbine (362) is provided at the inner end of the exhaust pipe (331). A bevel gear (361) meshing with the bevel gear (35) is provided at the outer end of the rotating shaft (36). The ring body (34) is slidably connected to the slide rod (37) in the cylinder (31) and is screwed to the reciprocating screw (38) through the screw nut. A cleaning brush (341) is provided on the inner wall of the ring body (34). A cleaning assembly (39) is provided on the top of the ring body (34).

2. The self-winding tube laser cutting device according to claim 1, characterized in that: The rotating shaft (36) is rotatably connected to the fixed plate (363) at the top of the cylinder (31).

3. The self-winding tube laser cutting device according to claim 1, characterized in that: The intake pipe (32) is a corrugated pipe.

4. The self-winding tube laser cutting device according to claim 1, characterized in that: The suction end of the suction pipe (32) is provided with a suction nozzle (322).

5. The self-winding tube laser cutting device according to claim 1, characterized in that: The air intake pipe (32) is connected to the cylinder (31) through a bend (321).

6. The self-winding tube laser cutting device according to claim 1, characterized in that: The cleaning brush (341) is evenly distributed along the circumference of the ring (34).

7. The self-winding tube laser cutting device according to claim 1, characterized in that: The cleaning assembly (39) includes a rotating ring (391), a scraper (392) and a wind vane (393). The rotating ring (391) is rotatably connected to the top of the ring body (34). Several scrapers (392) are evenly distributed along the top circumference of the rotating ring (391). The upper end of the scraper (392) is provided with a scraping surface that cooperates with the outer side of the filter element (33). Each scraper (392) is provided with a wind vane (393).

8. The self-winding tube laser cutting device according to claim 1, characterized in that: The outer side of the cylinder (31) is connected to the side of the laser (2) via a mounting plate.

9. The self-winding tube laser cutting device according to claim 1, characterized in that: Several connecting plates (332) that connect to the inner wall of the cylinder (31) are evenly distributed along the lower circumference of the filter element (33).

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