Profile steel laser cutting machining equipment and method

Abstract

The invention discloses profile steel laser cutting machining equipment and method.The equipment comprises a base, a movable frame is installed on two first electric sliding rails, a movable block is installed on the movable frame, an electric push rod is installed on the movable block, and a driving rod is installed at the output end of the electric push rod; a laser cutting head is fixed at the bottom of the driving rod; the method comprises the following steps that S1, a supporting plate is adjusted and positioned; S2, laser cutting and waste cleaning are conducted; S3, the supporting plate is cooled and subjected to water circulation; and S4, the supporting plate is reset and prepared for next cutting. The supporting plate rotates and inclines during cutting, the situation that the supporting plate is damaged after laser penetrates through the T-shaped steel is avoided, meanwhile, waste and slag are separated due to gravity in the inclined state, accumulation is prevented, air is continuously blown to the supporting plate to further clean the end face, the water tank cools the supporting plate, water circulation is achieved, slag damage and heat accumulation are reduced, and the supporting plate is protected.

Description

Technical Field

[0001] The present invention relates to the technical field of steel section laser cutting, and in particular to equipment and method for processing steel section laser cutting. Background Art

[0002] Steel sections (such as H-beams, T-beams, and channel steel) are widely used in construction, bridges, machinery manufacturing, shipbuilding, and other fields. In existing laser cutting processes for T-beams, the T-beam is typically placed on the cutting table with the aid of a metal backing plate. This plate provides elevation and support, facilitating the multi-angle operation of the laser cutting head. The top of the backing plate features a toothed structure that contacts the T-beam, minimizing contact area, reducing heat conduction, and preventing the T-beam from slipping.

[0003] However, during the laser cutting process, the laser beam still carries energy after penetrating the T-steel. When it irradiates the pad, it will cause slight melting and damage to the pad. These damages will leave irregular cutting marks on the top of the pad's tooth structure. After repeated accumulation, the pad's flatness will change, and this change is not easy to detect. During long-term steel cutting work, the uneven pad makes it difficult to ensure accurate positioning of the steel, which in turn affects the cutting accuracy of the laser cutting head. After cutting the steel, metal slag will fall on the pad. If it is not cleaned, the movement of the steel will cause the metal slag to rub against the pad, which will also cause damage to the pad.

[0004] To this end, the present application proposes a steel section laser cutting processing device and method. Summary of the Invention

[0005] The purpose of the present invention is to solve the above technical problems and to propose a steel section laser cutting processing equipment and method.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A section steel laser cutting processing device comprises a base, two first electric slide rails are mounted on the base, a movable frame is mounted on the two first electric slide rails, a movable block is mounted on the movable frame, an electric push rod is mounted on the movable block, a driving rod is mounted on the output end of the electric push rod, and a laser cutting head is fixed to the bottom of the driving rod;

[0008] A fixing frame is installed on the base, and a plurality of supporting mechanisms for supporting the steel section are installed on the base. The supporting mechanism includes a supporting plate that is against the fixing frame. The bottom of the supporting plate is movably connected with two rectangular columns that can drive the supporting plate to move upward or downward. When the laser cutting head moves downward to cut the steel section, the two driving mechanisms installed on the base can drive the two rectangular columns to move downward. When the two rectangular columns move downward and drive the support plate opposite to the laser cutting head to move downward and do not against the fixing frame, the support plate rotates and is in an inclined state.

[0009] Preferably, it also includes a cleaning mechanism for cleaning the upper end surface of the support plate in an inclined state, the cleaning mechanism includes two guide rails fixed on the movable frame, the guide rails are slidably connected to a first piston cylinder, the first piston cylinder is slidably connected to a first movable piston, a connecting rod is fixed on the first movable piston, the two connecting rods are connected by a connecting plate, the driving rod passes through the connecting plate and is fixedly connected to it, an exhaust pipe connected to it is installed at the bottom of the first piston cylinder, and the exhaust pipe is arranged opposite to the support plate.

[0010] Preferably, the drive mechanism includes four support rods fixed to a base, each of which is secured with a rectangular cylinder. The rectangular column is slidably connected within the rectangular cylinder. A shaft bracket is secured to the bottom of the support plate, the rectangular column being rotatably connected to the shaft bracket. A torsion spring is installed at the point where the shaft bracket and the rectangular column rotate. A threaded groove is provided at the bottom of the rectangular column, a screw being threadedly connected within the groove. A short shaft is secured to the bottom of the screw. A support block is sleeved on the short shaft and rotatably mounted therewith. The support block is fixedly connected to the inner wall of the rectangular cylinder.

[0011] Preferably, it also includes a transmission mechanism for driving the short shaft to rotate, the transmission mechanism includes a gearbox fixed on the support rod, a first bevel gear is fixed on the short shaft, and a second bevel gear and a transmission gear are fixed to the two end shaft ends of the gearbox respectively, the first bevel gear is meshed with the second bevel gear, a guide frame is fixed on the rectangular cylinder, a rack plate is provided with a sliding arrangement on the guide frame, the rack plate is meshed with the transmission gear, a pressure plate is fixed to the upper end of the rack plate, a pressure rod is fixed to the bottom of the first piston cylinder, and the pressure rod is arranged opposite to the pressure plate.

[0012] Preferably, it also includes a reset mechanism for driving the rack plate to reset, the reset mechanism includes a connecting block fixed to the bottom of the rack plate, the bottom of the connecting block is fixed with a first spring, and the first spring is fixedly connected to the upper end of the base.

[0013] Preferably, in an initial state, the pressing rod is arranged close to the pressing plate, and the pressing rod does not contact the pressing plate.

[0014] Preferably, it also includes a cooling mechanism capable of cooling the support plate, the cooling mechanism including a water tank fixed to the bottom of the support plate and a second piston cylinder and a liquid storage tank fixed to the base, the water tank and the liquid storage tank are connected through a return pipe, and a pressure relief valve is installed on the return pipe, the second piston cylinder is connected to the second piston cylinder through a liquid inlet pipe, a first one-way valve is installed on the liquid inlet pipe, the second piston cylinder is connected to the water tank through a liquid outlet pipe, a second one-way valve is installed on the liquid outlet pipe, a second movable piston is movably connected in the second piston cylinder, a second spring is fixed to the second movable piston and the second piston cylinder, a movable rod is fixed to the upper end of the second movable piston, and the movable rod is against the bottom of the water tank.

[0015] Preferably, the first one-way valve only allows water in the liquid inlet pipe to enter the second piston cylinder, and the second one-way valve only allows water in the second piston cylinder to be discharged through the liquid outlet pipe.

[0016] The present invention also discloses a method for laser cutting of section steel, comprising the following steps:

[0017] S1, support plate adjustment and positioning: The laser cutting head and the connecting mechanism are driven downward by the electric push rod, which drives the support plate to move downward and rotate to an inclined state to avoid the laser cutting path. At the same time, other support plates remain horizontal to stably support the T-shaped steel and avoid waste accumulation during cutting.

[0018] S2, laser cutting and waste cleaning: The laser cutting head cuts or opens a hole in the T-shaped steel, and the waste and slag fall onto the inclined support plate and are separated from the support plate due to gravity; the movable block drives the electric push rod to move left and right, and continuously blows air to the support plate through the first piston cylinder and exhaust pipe to further clean the end surface of the support plate.

[0019] S3, support plate cooling and water circulation: A water tank is provided at the bottom of the support plate to cool the support plate during laser cutting. At the same time, the water tank moves downward, driving the moving rod downward to transport the water in the second piston cylinder to the water tank. After the water pressure increases, it flows back to the liquid storage tank through the return pipe, realizing the replacement of water in the water tank for better cooling of the support plate.

[0020] S4, the support plate is reset and prepared for the next cutting: After the cutting is completed, the electric push rod drives the laser cutting head to move up, and the support plate is reset to a horizontal state under the action of the first spring, and is against the bottom of the fixed frame; the second movable piston and the movable rod are reset under the action of the second spring, and the water in the liquid storage tank is sucked into the second piston cylinder to prepare for the next cutting.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. By moving the support plate downward and rotating it to an inclined state during laser cutting, the laser beam that penetrates the T-shaped steel will not directly irradiate the support plate, thereby avoiding melting and damage to the support plate caused by laser energy, maintaining the flatness of the support plate, and thus ensuring the accurate positioning of the steel and the cutting accuracy of the laser cutting head.

[0023] 2. The waste and slag produced by laser cutting fall onto the inclined support plate and are automatically separated by gravity, thus preventing the accumulation of slag on the support plate. At the same time, the movable block drives the electric push rod to move left and right, continuously blowing air toward the support plate, further cleaning the end surface of the support plate and preventing the slag from damaging the support plate due to friction.

[0024] 3. A water tank is provided at the bottom of the support plate to cool the support plate, reducing the impact of laser cutting on the support plate. At the same time, the water in the water tank is circulated and replaced to further protect the support plate, so that the slag falling on the support plate is not easy to damage the support plate.

[0025] 4. After cutting is complete, the support plate automatically returns to a horizontal position under the action of the spring, counteracting the bottom of the fixed frame, ensuring the stability and support effect of the support plate. At the same time, the water circulation system realizes the automatic replacement of water in the water tank through the coordinated work of the second piston cylinder, water tank, liquid storage tank and other components, ensuring the continuous cooling effect of the support plate.

[0026] 5. The electric push rod is used to drive the laser cutting head to move up and down to provide power, and to provide power for the lifting and lowering of the support plate and the operation of the second piston cylinder and the second moving piston. No additional power is required, reducing the investment in power equipment.

[0027] In summary, the present invention prevents the support plate from being damaged after the laser penetrates the T-steel by rotating and tilting the support plate during cutting. At the same time, the tilted state allows waste and slag to separate due to gravity to prevent accumulation. Continuous air blowing is directed to the support plate to further clean the end face. The water tank cools the support plate and realizes water circulation, reducing slag damage and heat accumulation, thereby protecting the support plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural schematic diagram of a steel section laser cutting processing equipment proposed by the present invention;

[0029] Figure 2 This is a side view of a steel section laser cutting processing equipment proposed by the present invention;

[0030] Figure 3 This is a schematic diagram of a support mechanism in a steel section laser cutting processing equipment proposed by the present invention;

[0031] Figure 4 This is a structural schematic diagram of the first piston cylinder in a steel section laser cutting processing equipment proposed by the present invention;

[0032] Figure 5 This is a side view of a support mechanism in a steel section laser cutting processing equipment proposed by the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the split rectangular tube in the steel section laser cutting processing equipment proposed by the present invention;

[0034] Figure 7 This is a structural schematic diagram of the second piston cylinder in the steel section laser cutting processing equipment proposed by the present invention.

[0035] In the figure: 1 base, 2 first electric slide rail, 3 mobile frame, 4 movable block, 5 electric push rod, 6 connecting plate, 7 drive rod, 8 laser cutting head, 10 first piston cylinder, 11 guide rail, 12 exhaust pipe, 13 pressure rod, 14 fixed frame, 15 support plate, 16 liquid storage tank, 17 return pipe, 18 second piston cylinder, 19 first one-way valve, 20 second one-way valve, 21 pressure relief valve, 22 liquid inlet pipe, 23 mobile rod, 24 pressure plate, 25 first mobile piston, 26 connecting rod, 27 rectangular cylinder, 28 support rod, 29 first spring, 30 water tank, 31 gearbox, 32 guide frame, 33 shaft frame, 34 torsion spring, 35 second mobile piston, 36 second spring, 37 rectangular column, 38 screw, 39 support block, 40 short shaft, 41 first bevel gear, 42 second bevel gear, 43 transmission gear, 44 connecting block, 45 rack plate, 46 thread groove, 47 liquid outlet pipe. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] Reference Figure 1-Figure 7 A steel section laser cutting machine includes a base 1 securely mounted on a work surface to ensure overall stability. Two high-precision first electric slides 2 are mounted on the base 1. These first electric slides 2 are arranged in parallel to ensure linear movement and accuracy. A movable frame 3 is slidably mounted on the two first electric slides 2. The movable frame 3 is made of high-strength steel to ensure load-bearing capacity and durability.

[0038] A movable block 4 is mounted on the movable frame 3, which is further mounted on a second electric slide. The movable block 4 is mounted on the slider of the second electric slide. The coordinated operation of the first and second electric slides allows the movable block 4 to be precisely moved in all four directions, front, back, left, and right, to meet the cutting requirements at different locations on the steel section.

[0039] A motorized push rod 5 is fixedly mounted on movable block 4. Driven by a servo motor, it offers high precision and rapid response. A drive rod 7, made of high-strength alloy steel, is mounted on the output end of push rod 5, ensuring stability during high-speed movement and under the weight of laser cutting head 8. A laser cutting head 8 is fixed to the bottom of drive rod 7. This laser cutting head 8 utilizes an advanced laser generator and optical system to produce a high-energy-density laser beam. This, in conjunction with the vertical movement of push rod 5, enables precise cutting of steel sections.

[0040] The cleaning mechanism also includes a cleaning mechanism for cleaning the upper end surface of the support plate 15 when tilted. The cleaning mechanism comprises two guide rails 11 fixed to the movable frame 3. These guide rails 11 are perpendicular to the direction of movement of the movable frame 3, ensuring stable sliding of the first piston cylinder 10. The first piston cylinder 10 is slidably connected to the guide rails 11. The first piston cylinder 10 is made of a material with good sealing properties to ensure smooth internal piston movement. A first movable piston 25 is slidably connected to the first piston cylinder 10. A connecting rod 26 is fixed to the first movable piston 25. The two connecting rods 26 are connected by a connecting plate 6 to form a stable moving structure. A drive rod 7 extends through the connecting plate 6 and is fixedly connected thereto. As the drive rod 7 moves up and down, it drives the connecting plate 6, the connecting rod 26, and the first movable piston 25 to move synchronously. An exhaust pipe 12 is mounted at the bottom of the first piston cylinder 10 and is connected thereto. The exhaust pipe 12 is arranged opposite the support plate 15, and the outlet end of the exhaust pipe 12 is designed with a flattened nozzle to increase the cleaning area and efficiency.

[0041] Mounted on the base 1 is a fixed frame 14 welded from high-strength steel to ensure stable support for the support mechanism. Multiple support mechanisms for the steel sections are mounted on the base 1. These support mechanisms include a support plate 15 that abuts against the fixed frame 14. The support plate 15 is made of wear-resistant and high-temperature-resistant material, with a special surface treatment to reduce friction and wear against the steel sections. Two rectangular columns 37 are flexibly connected to the bottom of the support plate 15, driving it upward and downward. These columns 37 are made of high-strength steel and chrome-plated for enhanced wear and corrosion resistance. When the laser cutting head 8 moves downward to cut the steel sections, two drive mechanisms mounted on the base 1 drive the two columns 37 downward. When the two columns 37 move downward, driving the support plate 15 opposite the laser cutting head 8 downward and not abutting against the fixed frame 14, the support plate 15 rotates and tilts due to the flexible connection between the support plate 15 and the columns 37 and the action of the torsion spring 34. In this way, the molten metal slag and waste materials that fall on the support plate 15 will automatically fall down due to the action of gravity and will not accumulate on the support plate 15.

[0042] Secondly, when the support plate 15 moves downward, the distance between it and the laser cutting head 8 increases, thereby reducing the risk of direct damage to the support plate 15 by the laser cutting head 8. At the same time, the tilted state of the support plate 15 also helps to reduce damage to the support plate 15 caused by laser reflection.

[0043] The drive mechanism is further explained as follows: The drive mechanism includes four support rods 28 fixed to the base 1. These four support rods 28 are made of high-strength steel and are rationally distributed to ensure stable support for the rectangular tube 27. A rectangular tube 27 is fixed to the four support rods 28. The rectangular tube 27 is made of seamless steel pipe and has a polished surface to reduce friction with the rectangular column 37. The rectangular column 37 is slidably connected within the rectangular tube 27, and the two are connected by a clearance fit or linear bearing to ensure smooth sliding of the rectangular column 37. A shaft frame 33 is fixed to the bottom of the support plate 15. The rectangular column 37 and the shaft frame 33 are rotatably connected via a rotating shaft. A torsion spring 34 is installed at the rotation point between the shaft frame 33 and the rectangular column 37. The torsion spring 34 is made of high-strength spring steel and has sufficient elasticity and durability. A threaded groove 46 is provided at the bottom of the rectangular column 37. A screw 38 is threadedly connected to the threaded groove 46. By rotating the screw 38, the initial position of the rectangular column 37 within the rectangular tube 27 can be adjusted. A short shaft 40 is fixed to the bottom of the screw 38, and a support block 39 is sleeved on the short shaft 40 and rotatably arranged therewith. The support block 39 is fixedly connected to the inner wall of the rectangular tube 27, and a bearing or sleeve is provided inside the support block 39 to reduce friction when the short shaft 40 rotates.

[0044] The transmission mechanism also includes a gearbox 31 fixed to the support rod 28. The gearbox 31 utilizes a gear or worm gear transmission, providing a torque reduction function. A first bevel gear 41 is fixed to the stub shaft 40. A second bevel gear 42 and a transmission gear 43 are fixed to each end of the gearbox 31. The first bevel gear 41 meshes with the second bevel gear 42, forming a stable transmission relationship. A guide frame 32 is fixed to the rectangular cylinder 27. The guide frame 32 is made of high-strength steel and features guide grooves or holes to ensure stable sliding of the rack plate 45. A rack plate 45 is slidably mounted throughout the guide frame 32. The tooth profile of the rack plate 45 matches the transmission gear 43, ensuring accurate transmission. A reset mechanism is also included to reset the rack plate 45. The reset mechanism includes a connecting block 44 fixed to the bottom of the rack plate 45. The connecting block 44 is made of high-strength steel and has a suitable shape and size to ensure a stable connection with the first spring 29. A first spring 29 is fixed to the bottom of the connecting block 44. The first spring 29 is made of a high-strength compression spring with sufficient elasticity and durability. The first spring 29 is fixedly connected to the upper end of the base 1, and an adjustment device is provided at the connection to adjust the preload force of the first spring 29.

[0045] The rack plate 45 meshes with the transmission gear 43 to form a stable transmission relationship. A pressure plate 24 is fixed to the upper end of the rack plate 45. The pressure plate 24 is made of high-strength steel and has a polished surface to reduce friction with the pressure rod 13. A pressure rod 13 is fixed to the bottom of the first piston cylinder 10. The pressure rod 13 is made of high-strength steel and has a reasonable shape and size to ensure stable contact with the pressure plate 24. The pressure rod 13 is arranged opposite to the pressure plate 24, and in the initial state, the pressure rod 13 is arranged close to the pressure plate 24 but does not contact the pressure plate 24, to ensure that the cleaning mechanism can be accurately triggered when needed.

[0046] The support plate 15 also includes a cooling mechanism capable of cooling the support plate 15. The cooling mechanism comprises a water tank 30 fixed to the bottom of the support plate 15, a second piston cylinder 18 fixed to the base 1, and a liquid storage tank 16. The water tank 30 is made of high-strength, corrosion-resistant materials and is designed with a reasonable shape and size to ensure sufficient water storage capacity and heat dissipation area. The water tank 30 is connected to the liquid storage tank 16 via a return pipe 17, and a pressure relief valve 21 is installed on the return pipe 17. The pressure relief valve 21 is in the form of a safety valve or overflow valve to ensure that the pressure in the water tank 30 does not exceed the limit. The second piston cylinder 18 is connected to the liquid storage tank 16 via a liquid inlet pipe 22, and a first one-way valve 19 is installed on the liquid inlet pipe 22. The first one-way valve 19 is in the form of a ball valve or flap valve, which only allows water in the liquid inlet pipe 22 to enter the second piston cylinder 18.

[0047] The second piston cylinder 18 is connected to the water tank 30 through a liquid outlet pipe 47, and a second one-way valve 20 is installed on the liquid outlet pipe 47. The second one-way valve 20 is also in the form of a ball valve or a flap valve, which only allows the water in the second piston cylinder 18 to be discharged through the liquid outlet pipe 47. A second movable piston 35 is movably connected to the second piston cylinder 18. The second movable piston 35 is made of a material with good sealing performance and is designed with a reasonable shape and size to ensure a close fit with the inner wall of the second piston cylinder 18. A second spring 36 is fixed between the second movable piston 35 and the second piston cylinder 18. The second spring 36 is made of a high-strength compression spring and has sufficient elasticity and durability. A movable rod 23 is fixed to the upper end of the second movable piston 35. The movable rod 23 is made of high-strength steel and is designed with a reasonable shape and size to ensure stable contact with the bottom of the water tank 30. The movable rod 23 abuts the bottom of the water tank 30. As the water in the water tank 30 expands due to heat, it pushes the movable rod 23 and the second movable piston 35 downward, forcing the water in the second piston cylinder 18 into the water tank 30 through the liquid outlet pipe 47, achieving water circulation and heat dissipation. Simultaneously, when the water in the water tank 30 cools and contracts, the second spring 36 pushes the second movable piston 35 and the movable rod 23 upward, drawing the water in the liquid storage tank 16 into the second piston cylinder 18 through the liquid inlet pipe 22, replenishing the water in the water tank 30. This repetitive cycle effectively cools the support plate 15, making it less likely to damage the support plate 15 when the laser passes through the T-shaped steel.

[0048] When the present invention is used:

[0049] In the steel laser cutting equipment, two first electric slides 2 are mounted on a base 1. A movable frame 3 is mounted on the first electric slides 2. A second electric slide and a movable block 4 are mounted on the movable frame 3. The first and second electric slides 2 and 3 are used to move the movable block 4 forward, backward, left, and right. The movable block 4 is mounted on an electric push rod 5, which, in conjunction with the electric push rod 5, enables the laser cutting head 8 to move up and down, forward, backward, left, and right, thereby cutting the steel.

[0050] When the laser cutting head 8 moves downward to cut the steel section, the electric push rod 5 drives the driving rod 7 and the laser cutting head 8 to move downward, the driving rod 7 moves downward to drive the connecting plate 6 to move downward, the connecting plate 6 moves downward to drive the first piston cylinder 10, the first movable piston 25, the connecting rod 26 and the exhaust pipe 12 to move downward, and the first piston cylinder 10 slides stably under the guidance of the guide rail 11; the first piston cylinder 10 moves downward to drive the pressure rod 13 to move downward, the pressure rod 13 moves downward to squeeze the pressure plate 24 to move downward, and the pressure plate 24 moves downward to drive the rack plate 45 to move downward, and the rack The plate 45 moves downward to drive the transmission gear 43 to rotate, and the second bevel gear 42 is driven by the transmission of the gearbox 31 to realize rapid rotation. The rotation of the second bevel gear 42 drives the first bevel gear 41, the short shaft 40 and the screw 38 to rotate. The rotation of the screw 38 causes the rectangular column 37 to move downward in the rectangular tube 27, thereby driving the shaft frame 33 and the support plate 15 to move downward. The support plate 15 moves downward and away from the fixed frame 14. At this time, the support plate 15 is no longer limited, and under the action of the torsion spring 34, the support plate 15 rotates and is in an inclined state.

[0051] The laser cutting head 8 can cut or drill holes in T-shaped steel. The waste and slag generated by the laser cutting fall onto the inclined support plate 15. Eventually, the waste and slag are separated from the support plate 15 due to gravity, so that the waste and slag will not accumulate on the support plate 15.

[0052] The support plates 15 in other parts are still in a horizontal state, and can stably support the T-shaped steel. The support plates 15 are independent of each other and do not affect each other.

[0053] The movable block 4 drives the electric push rod 5 to move left and right, thereby driving the connecting plate 6 to move, thereby driving the connecting rod 26 and the first movable piston 25 to move left and right. Figure 2 As shown, when it moves to the left, the connecting rod 26 and the first movable piston 25 on the left are squeezed to move, and the air in the first piston cylinder 10 on the left is discharged through the exhaust pipe 12 and blown onto the support plate 15, then the connecting rod 26 and the first movable piston 25 on the right move, and the air enters the first piston cylinder 10 on the right through the exhaust pipe 12. When it moves to the right, the same as above; in this way, air can be continuously blown onto the support plate 15 to further clean the end face of the support plate 15 and prevent slag and the like from damaging the support plate 15 due to friction.

[0054] Since the support plate 15 is arranged away from the laser cutting head 8 and a water tank 30 is provided at the bottom, the impact of the laser cutting head 8 on the support plate 15 after cutting through the T-shaped steel is reduced. The water tank 30 cools the support plate 15 and further protects the support plate 15; it also prevents the slag falling on the support plate 15 from damaging the support plate 15.

[0055] Among them, the downward movement of the support plate 15 drives the water tank 30 to move downward, and the downward movement of the water tank 30 will squeeze the movable rod 23 to move downward. The downward movement of the movable rod 23 drives the second movable piston 35 to move downward, so that the water in the second piston cylinder 18 can be transported to the water tank 30 through the liquid outlet pipe 47. The water pressure in the water tank 30 increases. When the threshold value is greater than the threshold value of the pressure relief valve 21, the pressure relief valve 21 opens, and part of the water in the water tank 30 flows through the return pipe 17 to the liquid storage tank 16. In this way, the water in the water tank 30 is replaced, so as to better cool the support plate 15.

[0056] After the cutting is completed, the electric push rod 5 drives the laser cutting head 8 to move upward, and under the action of the first spring 29, the rack plate 45 moves upward, and then the transmission gear 43 is reversed. After transmission, the rectangular column 37 moves upward, and finally the support plate 15 is against the bottom of the fixed frame 14 and is in a horizontal state.

[0057] Under the action of the second spring 36 , the second movable piston 35 and the movable rod 23 are reset, and the water in the liquid storage tank 16 can be sucked into the second piston cylinder 18 through the liquid inlet pipe 22 so as to subsequently replace the water in the water tank 30 .

[0058] The present invention also discloses a method for laser cutting of section steel, comprising the following steps:

[0059] S1, support plate 15 adjustment and positioning: The laser cutting head 8 and the connecting mechanism are driven downward by the electric push rod 5, which drives the support plate 15 to move downward and rotate to an inclined state to avoid the laser cutting path. At the same time, other support plates 15 remain horizontal to stably support the T-shaped steel and avoid waste accumulation during cutting.

[0060] S2, laser cutting and waste cleaning: The laser cutting head cuts or opens a hole in the T-shaped steel, and the waste and slag fall onto the inclined support plate 15 and are separated from the support plate 15 due to gravity; the movable block 4 drives the electric push rod 5 to move left and right, and continuously blows air to the support plate 15 through the first piston cylinder 10 and the exhaust pipe 12 to further clean the end surface of the support plate 15.

[0061] S3, support plate 15 cooling and water circulation: A water tank 30 is provided at the bottom of the support plate 15 to cool the support plate 15 during laser cutting. At the same time, the water tank 30 moves downward to drive the moving rod 23 to move downward, and the water in the second piston cylinder 18 is transported to the water tank 30. After the water pressure increases, it flows back to the liquid storage tank 16 through the return pipe 17, realizing the replacement of the water in the water tank 30, so as to better cool the support plate 15.

[0062] S4, the support plate 15 is reset and prepared for the next cutting: after the cutting is completed, the electric push rod 5 drives the laser cutting head 8 to move upward, and the support plate 15 is reset to a horizontal state under the action of the first spring 29, and is against the bottom of the fixed frame 14; the second movable piston 35 and the movable rod 23 are reset under the action of the second spring 36, and the water in the liquid storage tank 16 is sucked into the second piston cylinder 18, preparing for the next cutting.

[0063] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A steel section laser cutting processing device, comprising a base (1), characterized in that: Two first electric slide rails (2) are installed on the base (1), a moving frame (3) is installed on the two first electric slide rails (2), a movable block (4) is installed on the movable frame (3), an electric push rod (5) is installed on the movable block (4), a driving rod (7) is installed at the output end of the electric push rod (5), and a laser cutting head (8) is fixed at the bottom of the driving rod (7); A fixing frame (14) is installed on the base (1), and a plurality of supporting mechanisms for supporting the section steel are installed on the base (1), wherein the supporting mechanism comprises a supporting plate (15) abutting against the fixing frame (14), and the bottom of the supporting plate (15) is movably connected with two rectangular columns (37) capable of driving the supporting plate (15) to move upward or downward. When the laser cutting head (8) moves downward to cut the section steel, the two driving mechanisms installed on the base (1) can drive the two rectangular columns (37) to move downward. When the two rectangular columns (37) move downward and drive the supporting plate (15) opposite to the laser cutting head (8) to move downward and do not abut against the fixing frame (14), the supporting plate (15) rotates and is in an inclined state.

2. The steel section laser cutting equipment according to claim 1, characterized in that: The invention also includes a cleaning mechanism for cleaning the upper end surface of the support plate (15) in an inclined state, wherein the cleaning mechanism includes two guide rails (11) fixed on the movable frame (3), a first piston cylinder (10) being slidably connected to the guide rails (11), a first movable piston (25) being slidably connected inside the first piston cylinder (10), a connecting rod (26) being fixed to the first movable piston (25), the two connecting rods (26) being connected via a connecting plate (6), the driving rod (7) passing through the connecting plate (6) and being fixedly connected thereto, an exhaust pipe (12) being installed at the bottom of the first piston cylinder (10) and being in communication therewith, and the exhaust pipe (12) being arranged opposite to the support plate (15).

3. The steel section laser cutting equipment according to claim 2, characterized in that: The driving mechanism comprises four support rods (28) fixed on the base (1), a rectangular tube (27) being fixed on the four support rods (28), the rectangular column (37) being slidably connected in the rectangular tube (27), a shaft frame (33) being fixed at the bottom of the support plate (15), the rectangular column (37) being rotatably connected to the shaft frame (33), a torsion spring (34) being installed at the rotation point of the shaft frame (33) and the rectangular column (37), a thread groove (46) being provided at the bottom of the rectangular column (37), a screw rod (38) being connected to the inner thread of the thread groove (46), a short shaft (40) being fixed at the bottom of the screw rod (38), a support block (39) being sleeved on the short shaft (40) and being rotatably arranged therewith, and the support block (39) being fixedly connected to the inner wall of the rectangular tube (27).

4. The steel section laser cutting equipment according to claim 3, characterized in that: The invention also includes a transmission mechanism for driving the short shaft (40) to rotate, wherein the transmission mechanism includes a gearbox (31) fixed on the support rod (28), a first bevel gear (41) fixed on the short shaft (40), a second bevel gear (42) and a transmission gear (43) fixed on both ends of the gearbox (31), the first bevel gear (41) and the second bevel gear (42) are meshed with each other, a guide frame (32) is fixed on the rectangular cylinder (27), a rack plate (45) is provided on the guide frame (32) for sliding, the rack plate (45) and the transmission gear (43) are meshed with each other, a pressure plate (24) is fixed on the upper end of the rack plate (45), a pressure rod (13) is fixed on the bottom of the first piston cylinder (10), and the pressure rod (13) and the pressure plate (24) are arranged relative to each other.

5. The steel section laser cutting equipment according to claim 4, characterized in that: It also includes a reset mechanism for driving the rack plate (45) to reset, the reset mechanism including a connecting block (44) fixed to the bottom of the rack plate (45), a first spring (29) fixed to the bottom of the connecting block (44), and the first spring (29) is fixedly connected to the upper end of the base (1).

6. The steel section laser cutting equipment according to claim 5, characterized in that: In the initial state, the pressing rod (13) is arranged close to the pressing plate (24), and the pressing rod (13) does not contact the pressing plate (24).

7. The steel section laser cutting equipment according to claim 6, characterized in that: The cooling device further comprises a cooling mechanism capable of cooling the support plate (15), the cooling mechanism comprising a water tank (30) fixed to the bottom of the support plate (15), a second piston cylinder (18) fixed to the base (1), and a liquid storage tank (16), the water tank (30) and the liquid storage tank (16) being connected via a return pipe (17), and a pressure relief valve (21) being installed on the return pipe (17), the second piston cylinder (18) being connected to the second piston cylinder (18) via a liquid inlet pipe (22), and a pressure relief valve (21) being installed on the liquid inlet pipe (22). The invention relates to a first one-way valve (19), wherein the second piston cylinder (18) is connected to the water tank (30) through a liquid outlet pipe (47), wherein the second one-way valve (20) is installed on the liquid outlet pipe (47), wherein the second movable piston (35) is movably connected in the second piston cylinder (18), wherein the second movable piston (35) and the second piston cylinder (18) are fixed with a second spring (36), wherein the upper end of the second movable piston (35) is fixed with a movable rod (23), and the movable rod (23) abuts against the bottom of the water tank (30).

8. The steel section laser cutting equipment and method according to claim 7, characterized in that: The first one-way valve (19) only allows water in the liquid inlet pipe (22) to enter the second piston cylinder (18), and the second one-way valve (20) only allows water in the second piston cylinder (18) to be discharged through the liquid outlet pipe (47).

9. A method for laser cutting of steel sections, applied to the laser cutting equipment according to claim 8, characterized in that: The following steps are involved: S1, support plate (15) adjustment and positioning: the laser cutting head (8) and the connecting mechanism are driven downward by the electric push rod (5), driving the support plate (15) to move downward and rotate to an inclined state to avoid the laser cutting path. At the same time, the other support plates (15) remain horizontal to stably support the T-shaped steel and avoid waste accumulation during cutting. S2, laser cutting and waste cleaning: the laser cutting head (8) cuts or opens a hole in the T-shaped steel, and the waste and slag fall onto the inclined support plate (15) and are separated from the support plate (15) due to gravity; the movable block (4) drives the electric push rod (5) to move left and right, and continuously blows air to the support plate (15) through the first piston cylinder (10) and the exhaust pipe (12), further cleaning the end surface of the support plate (15). S3, cooling of the support plate (15) and water circulation: a water tank (30) is provided at the bottom of the support plate (15), and the support plate (15) is cooled during laser cutting. At the same time, the water tank (30) moves downward to drive the moving rod (23) to move downward, and the water in the second piston cylinder (18) is transported to the water tank (30). After the water pressure increases, it flows back to the liquid storage tank (16) through the return pipe (17), realizing the replacement of the water in the water tank (30) so as to better cool the support plate (15). S4, the support plate (15) is reset and prepared for the next cutting: after the cutting is completed, the electric push rod (5) drives the laser cutting head (8) to move upward, and the support plate (15) is reset to a horizontal state under the action of the first spring (29), and is against the bottom of the fixed frame (14); the second movable piston (35) and the movable rod (23) are reset under the action of the second spring (36), and the water in the liquid storage tank (16) is sucked into the second piston cylinder (18) to prepare for the next cutting.

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