Splash protection device for laser head cutting

Abstract

The utility model relates to the technical field of laser cutting, in particular to a laser head cutting splash protection device which comprises lifting air cylinders installed on the left side and the right side of a laser cutting machine body, a protection metal plate shell located on the outer side of a laser cutting head is installed at the bottoms of the lifting air cylinders, and a plurality of fireproof cloth curtains are installed at the bottom of the protection metal plate shell. And an annular baffle for scraping condensed debris particles is mounted at the bottom of the protective metal plate shell through a connecting rod. The lifting air cylinder pushes the protective metal plate shell to move downwards, so that the fireproof cloth curtain at the bottom of the protective metal plate shell is driven to move downwards to shield high-temperature slag and splash generated in the cutting process, and the splashing is prevented from bursting out, causing equipment damage and threatening the safety of operators; chippings bursting at the cutting position and metal particles cooled after high-temperature melting are scraped, and therefore the situation that the metal particles are completely condensed, consequently, the cutting face is rough, subsequent additional grinding is needed, and the production efficiency is reduced is avoided.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting technology, and in particular to a laser head cutting spatter protection device. Background Technology

[0002] Laser cutting machines are important equipment in modern processing. They use high-energy laser beams to burn materials, achieving precise cutting. They have many advantages such as high cutting accuracy, high speed, and small heat-affected zone, and have been widely used in many fields such as automobile manufacturing, aerospace, machining, and electronics industry.

[0003] However, during the cutting process, especially when cutting metal, the interaction between the high-energy-density laser beam and the material being processed causes the material to melt or even vaporize instantaneously, forming a high-temperature, high-pressure plasma cloud. As these plasma clouds expand outward, they carry away surrounding molten material and unmelted particles, forming high-temperature slag and spatter. This spatter may directly impact critical components such as the laser head, optical elements, and cutting head, causing surface contamination, wear, or even damage. Furthermore, the molten metal remaining at the cutting edge will solidify into metal particles after cooling, affecting the smoothness of the cut surface. Additionally, the high-speed splashing molten particles and tiny fragments possess kinetic energy and may cause injury to the operator's eyes and skin. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a laser head cutting spatter protection device, which solves the technical problem that spatter during laser cutting can damage equipment, affect the surface finish of the cut, and pose a safety hazard to operators. It achieves the goal of protecting against spatter and improving cutting safety.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a laser head cutting spatter protection device, including a laser cutting head installed on the laser cutting machine body, the laser cutting head is provided with a distance adjustment mechanism that drives it to move up and down to adjust the cutting height, lifting cylinders are installed on the left and right sides of the laser cutting machine body, and a protective sheet metal shell located outside the laser cutting head is installed at the bottom of the lifting cylinders, multiple fireproof cloth curtains are installed at the bottom of the protective sheet metal shell, and an annular baffle for scraping off condensed debris particles is installed at the bottom of the protective sheet metal shell through a connecting rod, and a negative pressure pipe for sucking off debris particles is connected to the annular baffle, and a chip removal mechanism connected to the negative pressure pipe for cooling and collecting debris is provided on the laser cutting machine body.

[0006] A further improvement is that the distance adjustment mechanism includes a lifting track installed on the laser cutting machine body, and a connector is installed at the end of the lifting track. A mounting seat connected to the laser cutting head is installed on the connector. A guide rail is installed on the front of the laser cutting machine body, and a T-shaped slider is installed on the back of the mounting seat, which is slidably connected to the T-shaped groove opened on the guide rail.

[0007] A further improvement is that the chip removal mechanism includes a vacuum cleaner and a clean water tank installed sequentially on the top of the laser cutting machine body. The vacuum cleaner's suction port is connected to the end of the negative pressure pipe, and the vacuum cleaner's dust outlet is equipped with a connecting pipe whose end extends into the clean water tank. The top of the clean water tank is equipped with a waste gas purification component for adsorbing and purifying the waste gas generated during the laser cutting process.

[0008] A further improvement is that the annular baffle is perpendicular to the laser cutting head, and the inner side of the annular baffle has an open structure, and the bottom has a shovel-shaped structure.

[0009] A further improvement is that the exhaust gas purification component includes an exhaust pipe installed on the top of the water tank, and a swirl plate is installed on the inner wall of the exhaust pipe, and an activated carbon plate is slidably connected in a groove opened on the exhaust pipe.

[0010] A further improvement is that an inlet pipe is installed on the top of the water tank, and a slag discharge pipe is installed on the bottom side of the water tank, with an electric sealing valve installed on the slag discharge pipe.

[0011] By employing the above technical solution, this utility model provides a laser head cutting spatter protection device, which has at least the following beneficial effects:

[0012] 1. This utility model uses a lifting cylinder to push the protective sheet metal shell downward, thereby causing the fireproof cloth curtain at its bottom to move downward to block the high-temperature molten slag and spatter generated during the cutting process, thus preventing the spatter from shooting out and causing equipment damage and threatening the safety of operators.

[0013] 2. As the laser cutting head moves, the annular baffle also moves synchronously, scraping away the debris and metal particles that have been melted and cooled at high temperature at the cutting point. This prevents the metal particles from completely solidifying, which would result in a rough cutting surface that would require further grinding and reduce production efficiency.

[0014] 3. This utility model uses a vacuum cleaner in conjunction with a negative pressure pipe to draw debris from the annular baffle into the clean water tank, thereby cooling and condensing the metal debris for collection, facilitating resource recycling. At the same time, it draws harmful gases generated during the cutting process into the clean water tank for washing and purification, thus preventing harmful gases from causing health damage to operators. Attached Figure Description

[0015] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a side view of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the protective sheet metal shell of this utility model;

[0020] Figure 4 This is a schematic cross-sectional view of the annular baffle of this utility model;

[0021] Figure 5 This is a schematic diagram of the independently disassembled structure of the adjusting mechanism of this utility model;

[0022] Figure 6 This is a cross-sectional view of the internal structure of the exhaust pipe of this utility model.

[0023] In the image: 1. Laser cutting machine body; 2. Laser cutting head;

[0024] 3. Adjustable track mechanism; 31. Lifting track; 32. Connector; 33. Mounting base; 34. Guide rail; 35. T-shaped slider;

[0025] 4. Lifting cylinder; 5. Protective sheet metal shell; 6. Fireproof curtain;

[0026] 7. Chip removal mechanism; 71. Annular baffle; 72. Negative pressure pipe; 73. Vacuum cleaner; 74. Clean water tank; 75. Connecting pipe;

[0027] 76. Exhaust gas purification components; 761. Exhaust pipe; 762. Swirl plate; 763. Activated carbon plate;

[0028] 81. Liquid inlet pipe; 82. Slag discharge pipe; 83. Electric sealing valve. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1

[0031] Addressing the existing problems of laser cutting spatter damaging equipment, affecting the surface finish, and posing potential safety hazards to operators, this embodiment provides a laser head cutting spatter protection device. Please refer to... Figures 1-6 This embodiment provides a laser head cutting splatter protection device that can protect against splatter and improve cutting safety. The laser head cutting splatter protection device includes a laser cutting head 2 mounted on a laser cutting machine body 1. The laser cutting head 2 is equipped with an adjustment mechanism 3 that moves it up and down to adjust the cutting height. Lifting cylinders 4 are mounted on the left and right sides of the laser cutting machine body 1, and a protective sheet metal shell 5 is mounted at the bottom of the lifting cylinders 4, located outside the laser cutting head 2. Multiple fireproof cloth curtains 6 are mounted at the bottom of the protective sheet metal shell 5. An annular baffle 71 for scraping away condensed debris particles is mounted at the bottom of the protective sheet metal shell 5 via a connecting rod. A negative pressure pipe 72 is connected to the annular baffle 71 to suck up the debris particles. A chip removal mechanism 7 connected to the negative pressure pipe 72 is provided on the laser cutting machine body 1 to cool and collect the debris. During the cutting process of the laser cutting head 2 on the metal workpiece, the lifting cylinder 4 is activated to push the protective sheet metal shell 5 downward, thereby moving the fireproof curtain 6 at its bottom downward to shield the high-temperature molten slag and spatter generated during the cutting process. This prevents the spatter from flying out and causing equipment damage and threatening the safety of the operators. The fireproof curtain 6 is made of flame-retardant and fireproof material. The strip-shaped fireproof curtain 6 can also increase the airflow between the sealed area and the outside air. As the laser cutting head 2 moves, the annular baffle 71 also moves synchronously to scrape off the debris and metal particles that have cooled after being molten at high temperature at the cutting point. This prevents the metal particles from completely solidifying, resulting in a rough cut surface that requires subsequent grinding and reduces production efficiency.

[0032] Since the cutting height of the laser cutting head 2 needs to be adjusted specifically when dealing with workpieces of different thicknesses, the device is also equipped with a distance adjustment mechanism 3. The distance adjustment mechanism 3 includes a lifting track 31 installed on the laser cutting machine body 1, and a connector 32 is installed at the end of the lifting track 31. A mounting seat 33 connected to the laser cutting head 2 is installed on the connector 32. A guide rail 34 is installed on the front of the laser cutting machine body 1, and a T-shaped slider 35 is installed on the back of the mounting seat 33, which slides up and down in a T-shaped groove opened on the guide rail 34. When the lifting track 31 is started, the connector 32 moves down, thereby moving the mounting seat 33 at the bottom of the connector 32 and the laser cutting head 2 installed on the mounting seat 33 up and down, thereby adjusting the cutting height specifically. When the mounting seat 33 moves up and down, it moves the T-shaped slider 35 on its back up and down in the T-shaped groove opened on the guide rail 34, thereby improving the stability of the device.

[0033] Since the condensed metal particles scraped off by the annular baffle 71 still have a certain temperature, they need to be thoroughly cooled and the debris discharged to avoid debris accumulation and affecting the cutting work. Therefore, the device is also equipped with a chip removal mechanism 7. The chip removal mechanism 7 includes a vacuum cleaner 73 and a clean water tank 74 installed sequentially on the top of the laser cutting machine body 1. The vacuum cleaner 73's suction port is connected to the end of the negative pressure pipe 72, and the vacuum cleaner 73's dust outlet port is equipped with a connecting pipe 75 that extends into the clean water tank 74. The top of the clean water tank 74 is equipped with a waste gas purification component 76 for adsorbing and purifying the waste gas generated during the laser cutting process. When the vacuum cleaner 73 is started, the debris in the annular baffle 71 is sucked into the connecting pipe 75 through the negative pressure pipe 72 and finally flows into the clean water tank 74, thereby cooling and condensing the metal debris for collection, which is convenient for resource recycling. At the same time, the harmful gases generated during the cutting process are sucked into the clean water tank 74 for water washing and purification, thereby avoiding the harmful gases from causing health damage to the operators.

[0034] The annular baffle 71 is perpendicular to the laser cutting head 2, and the inner side of the annular baffle 71 has an open structure and the bottom has a shovel-shaped structure. The shovel-shaped structure of the annular baffle 71 makes it easier to scrape the newly solidified metal particles into the interior of the annular baffle 71.

[0035] The top of the water tank 74 is equipped with an inlet pipe 81, and the bottom of the side of the water tank 74 is equipped with a slag discharge pipe 82. An electric sealing valve 83 is installed on the slag discharge pipe 82. The electric sealing valve 83 is activated periodically to discharge the metal debris and sewage in the water tank 74 through the slag discharge pipe 82, and then clean water is injected into the water tank 74 through the inlet pipe 81.

[0036] Example 2

[0037] Because the harmful gas composition in laser cutting is quite complex, water washing alone is not enough to remove toxic residues. Therefore, based on Example 1, as... Figures 1-6 As shown, the device is also equipped with an exhaust gas purification component 76. The exhaust gas purification component 76 includes an exhaust pipe 761 installed on the top of the clean water tank 74, and a swirl plate 762 is installed on the inner wall of the exhaust pipe 761. An activated carbon plate 763 is slidably connected in a groove opened on the exhaust pipe 761. After being washed and purified by water, the gas floats up along the exhaust pipe 761 and passes through the swirl plate 762. The gas is forced to flow along the direction of the blades by the inclined blades on the swirl plate 762, thereby forming a swirl. This throws off the water droplets in the gas after washing and purification, avoiding water vapor residue and pollution of the processing environment. Then the gas passes through the activated carbon plate 763, thereby using the activated carbon plate 763 to perform secondary adsorption and purification of the residual harmful substances in the gas.

[0038] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser head cutting spatter protection device comprising a laser cutting head (2) mounted on a laser cutting machine body (1), characterized in that: The laser cutting head (2) is provided with a distance adjusting mechanism (3) for moving up and down to adjust the cutting height, the laser cutting machine body (1) is provided with lifting cylinders (4) on the left and right sides, the bottom of the lifting cylinder (4) is provided with a protective sheet metal shell (5) outside the laser cutting head (2), the bottom of the protective sheet metal shell (5) is provided with a plurality of fireproof cloth curtains (6), the bottom of the protective sheet metal shell (5) is provided with an annular baffle (71) for scraping the condensed debris particles through a connecting rod, and the annular baffle (71) is connected with a negative pressure pipe (72) for sucking the debris particles, and the laser cutting machine body (1) is provided with a debris removal mechanism (7) connected with the negative pressure pipe (72) for cooling and collecting the debris.

2. A laser head cutting spatter protection device according to claim 1, wherein: The distance adjusting mechanism (3) comprises a lifting track (31) installed on the laser cutting machine body (1), and a connecting head (32) is installed at the end of the lifting track (31), the connecting head (32) is provided with a mounting seat (33) connected with the laser cutting head (2), the laser cutting machine body (1) is provided with a guide rail (34) on the front side, and the back of the mounting seat (33) is provided with a T-shaped sliding block (35) slidingly connected in a T-shaped sliding groove formed in the guide rail (34).

3. A laser head spatter guard according to claim 1, wherein: The debris removal mechanism (7) comprises a dust collector (73) and a clean water tank (74) installed on the top of the laser cutting machine body (1) in sequence, the dust suction interface of the dust collector (73) is connected with the end of the negative pressure pipe (72), and the dust outlet interface of the dust collector (73) is provided with a communication pipe (75) extending into the inside of the clean water tank (74), and the top of the clean water tank (74) is provided with a waste gas purification assembly (76) for adsorbing and purifying the waste gas generated in the laser cutting process.

4. A laser head spatter guard according to claim 1, wherein: The annular baffle (71) vertically corresponds to the laser cutting head (2), and the inside of the annular baffle (71) is an open structure, and the bottom is a shovel type structure.

5. A laser head spatter guard according to claim 3, wherein: The waste gas purification assembly (76) comprises an exhaust pipe (761) installed on the top of the clean water tank (74), and a cyclone plate (762) is installed on the inner wall of the exhaust pipe (761), and the sliding groove formed in the exhaust pipe (761) is slidingly connected with an activated carbon plate (763).

6. A laser head spatter guard according to claim 3, wherein: The top of the clean water tank (74) is provided with a liquid inlet pipe (81), and the bottom of the side of the clean water tank (74) is provided with a slag discharge pipe (82), and the slag discharge pipe (82) is provided with an electric sealing valve (83).

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