Manufacturing equipment for steel cutting

Abstract

The invention relates to the technology of steel cutting equipment, in particular to manufacturing equipment for steel cutting, which comprises a base, a linear guide rail is fixedly mounted on the upper end face of the base, an electric sliding seat is slidably mounted on the inner side of the linear guide rail, and a steel fixing assembly and a U-shaped frame are fixedly connected to the upper end face of the electric sliding seat. The inner wall of the U-shaped frame is fixedly connected with a fillet positioning assembly. According to the device, accurate positioning of the circle center of a round corner and adjustment of the radius of the round corner can be rapidly completed, the steel round corner cutting manufacturing efficiency is improved, the positioning precision and machining precision of steel round corner cutting are ensured, swing type blowing and deslagging of a round corner notch can be achieved, and the production efficiency is improved. And meanwhile, the swing amplitude and frequency of swing type blowing and deslagging can be adjusted in a self-adaptive mode according to the fillet cutting radius, the slag removing effect at the notch and the steel fillet notch surface quality are ensured, and the cleaning workload after steel fillet cutting is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel cutting equipment, in particular to a manufacturing equipment for steel cutting. BACKGROUND

[0002] The steel cutting manufacturing equipment refers to an equipment for realizing steel cutting separation through heat energy or mechanical force, and belongs to the intelligent manufacturing equipment industry. The steel round corner cutting is a round arc machining process for the corners of steel. The round corner cutting process can eliminate the sharpness of the right angle of the steel and improve the assembly adaptability and safety of the workpiece. It can be widely used in the machining of sheet metal parts and structural parts. For example, the patent with the publication number CN114406704B discloses an intelligent manufacturing equipment for steel cutting.

[0003] However, in the steel round corner cutting operation, the round corners of different sizes and specifications of steel or different radius cutting requirements need to be re-measured, positioned and adjusted every time the equipment is cut, which leads to low efficiency of the positioning preparation work in the early stage of the steel round corner cutting operation, affecting the manufacturing efficiency and machining precision of the steel round corner cutting.

[0004] During the round corner cutting process, especially when using plasma or other thermal cutting processes, a large amount of molten metal slag will be generated. At present, a fixed-angle air nozzle is usually used to discharge the slag at the round corner cut of the steel. This slag discharge method has a fixed air flow direction and is difficult to penetrate into the round corner cut and fully remove the slag. Moreover, when cutting round corners of different radii, the smaller the radius of the round corner, the greater the curvature, and the slag at the round corner cut is not easy to discharge. When blowing and discharging the slag, it is difficult to ensure that the blowing direction follows the tangent direction of the cutting point, resulting in a lag or deviation of the air flow blowing and discharging effect, and the slag is easy to adhere to the surface of the cut, affecting the surface quality of the round corner cut of the steel and increasing the workload of subsequent cleaning after cutting. SUMMARY

[0005] In view of the above-mentioned shortcomings of the prior art, the present application provides a manufacturing equipment for steel cutting, which can effectively solve the problems of repeated measurement and positioning of different specifications of steel or round corners of different radii in the prior art, low efficiency of the positioning preparation work in the early stage, and the fixed-angle air nozzle discharging slag cannot adapt to the tangent direction of the round corner of different radii, which easily leads to slag adhesion, affects the cut quality and increases the cleaning workload.

[0006] To achieve the above-mentioned purposes, the present application is realized by the following technical solutions:

[0007] The present application provides a manufacturing equipment for steel cutting, comprising:

[0008] A base, on which a linear guide rail is fixedly installed on the upper surface, an electric slide block is slidably installed on the inner side of the linear guide rail, a steel fixing component and a U-shaped frame are fixedly connected to the upper surface of the electric slide block, and a rounded corner positioning component is fixedly connected to the inner wall of the U-shaped frame;

[0009] The rounded corner positioning assembly includes a vertical sliding frame fixedly connected to the inner wall of the U-shaped frame, a vertical slider slidably connected to the inner side of the vertical sliding frame, a horizontal slide rail fixedly connected to the outer wall of the vertical slider, a horizontal slider slidably connected to the inner side of the horizontal slide rail, a rectangular bracket fixedly connected to the outer wall of the horizontal slider, and a telescopic guide component fixedly connected to the inner side of the rectangular bracket.

[0010] An adaptive cutting and slag removal assembly is fixedly connected to the outer wall of the rectangular support.

[0011] Furthermore, the steel fixing assembly includes a concave bottom frame and two support frames fixedly connected to the upper surface of the electric slide block. Hydraulic push rods are fixedly installed on the side walls of the two support frames, and fixed abutment plates are fixedly connected to the telescopic ends of the two hydraulic push rods.

[0012] Furthermore, the rounded corner positioning assembly also includes a vertical lead screw rotatably connected to the side wall of the vertical slide frame, the vertical slider and the vertical lead screw being threadedly rotated together, a horizontal lead screw rotatably connected to the side wall of the horizontal slide rail, the horizontal lead screw and the horizontal slider being threadedly rotated together, and servo motors being fixedly installed on the outer walls of both the vertical slide frame and the horizontal slide rail, with the output ends of the two servo motors respectively fixedly connected to the ends of the vertical lead screw and the horizontal lead screw.

[0013] Furthermore, the telescopic guide component includes an inclined sleeve frame fixedly connected to the inner side of the rectangular bracket. Telescopic sleeve plates are slidably connected through both axial side walls of the inclined sleeve frame. Abutment rollers are rotatably connected to the ends of the two telescopic sleeve plates located outside the inclined sleeve frame. A middle partition plate is fixedly connected to the inner wall of the inclined sleeve frame. Multiple alloy tension springs are fixedly connected between the ends of the two telescopic sleeve plates located inside the inclined sleeve frame and the middle partition plate.

[0014] Furthermore, the adaptive cutting and slag removal assembly includes a shaft seat fixedly connected to the outer wall of a rectangular support. A low-speed motor is fixedly installed on the outer wall of the shaft seat. A rotating support is fixedly connected to the outer wall of the output end of the low-speed motor. A sealing sleeve frame is fixedly connected to the end of the rotating support. A control piston is slidably connected to the inner wall of the sealing sleeve frame. A sealing cavity is formed between the control piston, the inner wall of the sealing sleeve frame, and the inner bottom surface of the sealing sleeve frame. The sealing cavity is filled with hydraulic oil. A hydraulic oil pump is fixedly installed on the outer wall of the shaft seat. The suction port of the hydraulic oil pump is connected to the sealing sleeve frame via a hydraulic hose. A variable diameter support is fixedly connected to the outer wall of the control piston. A plasma cutting torch head is fixedly installed at the end of the variable diameter support away from the sealing sleeve frame. A slag removal self-adjusting component is fixedly connected to the outer wall of the variable diameter support.

[0015] Furthermore, the slag discharge self-adjusting component includes a support plate fixedly connected to the outer wall of the variable diameter bracket. Two lateral supports are fixedly connected to the outer wall of the support plate. A small motor is fixedly installed on the outer wall of one of the lateral supports. A reciprocating screw is fixedly connected to the output end of the small motor. A reciprocating slider is threadedly fitted to the outer peripheral wall of the reciprocating screw. A telescopic connecting rod is rotatably connected to the outer wall of the reciprocating slider through a hinge seat. A rotating frame is fixedly connected between the two lateral supports. The telescopic end of the telescopic connecting rod is rotatably connected to the rotating frame, and an air nozzle is fixedly connected to the telescopic end of the telescopic connecting rod. A high-pressure air pump is fixedly installed on the inner top surface of the U-shaped frame. The air outlet of the high-pressure air pump is connected to the air nozzle through a high-pressure pneumatic hose.

[0016] Furthermore, the slag discharge self-adjusting component also includes an L-shaped bracket fixedly connected to the outer wall of the sealing sleeve frame. The support plate has two limiting sliding holes, and a sliding frame is fixedly connected to each of the two limiting sliding holes. A gear rack is fixedly connected to the top of each of the two sliding frames. A gear is rotatably connected to the upper surface of the support plate via a pin. Both gear racks mesh with the gears for transmission. One of the sliding frames is fixedly connected to the L-shaped bracket. A collar frame is fixedly connected to the bottom of each of the two sliding frames. Both collar frames slide with a reciprocating screw. A variable resistance rod is fixedly connected between the two lateral supports. A sliding plate is fixedly connected to the outer wall of each of the two sliding frames. Both sliding plates slide with the variable resistance rod.

[0017] The two sliders and the variable resistance rod together form a sliding rheostat. The sliding rheostat is electrically connected to the small motor. During the process of the two sliders moving in opposite directions, the resistance value of the sliding rheostat in the closed circuit of the small motor increases.

[0018] Furthermore, a vision sensor and a PLC controller are fixedly installed on the inner wall of the U-shaped frame. The vision sensor is used to monitor the movement position of the steel in real time. The PLC controller, vision sensor, two servo motors, low-speed motor, hydraulic oil pump, small motor, sliding rheostat and external power supply are electrically connected.

[0019] The technical solution provided by this invention has the following advantages compared with the known prior art:

[0020] 1. In this invention, a rounded corner positioning component is provided. By driving the vertical slider and the horizontal slider in tandem, two abutting rollers are moved, so that the two abutting rollers are in contact with the side of the steel. This causes the rectangular bracket to move along the straight line at a 45-degree angle downward from the center of the rounded corner. The two abutting rollers move synchronously relative to the side of the steel and automatically extend under the tension of the alloy tension spring. This ensures that the two abutting rollers are always tightly against the side of the steel, achieving auxiliary positioning and support for the steel, ensuring the positioning accuracy of the rounded corner center, and finally aligning the rotation axis of the low-speed motor with the center of the rounded corner. This allows for rapid and accurate positioning of the rounded corner center, improving the manufacturing efficiency of rounded corner cutting of steel and ensuring the positioning and processing accuracy of rounded corner cutting of steel.

[0021] 2. In this invention, a sealing sleeve and a variable diameter bracket are provided. After the PLC controller receives the required fillet radius value, it controls the hydraulic oil pump to run. The hydraulic oil pump pumps or extracts hydraulic oil into the sealing cavity through the hydraulic hose to change the pressure in the sealing cavity and drive the control piston to move. This causes the variable diameter bracket to extend or retract relative to the sealing sleeve, thereby changing the overall length of the rotating bracket, the sealing sleeve, and the variable diameter bracket. This allows for rapid adjustment of the cutting radius of the steel fillet, enabling it to adapt to steel fillet cutting operations of different sizes and different fillet radii, thus improving the applicability of steel cutting.

[0022] 3. In this invention, an adaptive cutting and slag removal component is set up. A small motor drives the reciprocating screw to rotate, so that the reciprocating slider that rotates relative to the reciprocating screw thread moves back and forth linearly along the axis of the reciprocating screw. The telescopic connecting rod drives the air nozzle to swing back and forth, so that the air nozzle can swing and blow slag from the rounded corner cut. This allows the molten slag to be repeatedly blown away from the front and side of the rounded corner cut, thereby improving the slag removal effect of steel rounded corner cutting.

[0023] 4. In this invention, a slag discharge self-adjusting component is provided. When the variable diameter bracket moves telescopically relative to the sealing sleeve to adjust the radius of the rounded corner cutting, if the radius of the cut rounded corner is small, the variable diameter bracket moves inward relative to the sealing sleeve, driving the jet nozzle to swing rapidly back and forth at a larger swing angle and a higher swing frequency. This ensures that the blowing direction always follows the tangential direction of the cutting point, forming a continuous positive and lateral blowing force, ensuring the slag discharge effect when cutting small-radius rounded corners. When the radius of the cut rounded corner is large, the variable diameter bracket extends relative to the sealing sleeve, and the jet nozzle swings back and forth at a smaller swing angle and a lower swing frequency, so as to provide more vertical downward blowing force to the rounded corner cut, improving the accuracy of air blowing and slag discharge when cutting large-radius rounded corners. Thus, the swing amplitude and frequency of the swing-type air blowing and slag discharge can be adaptively adjusted according to the radius of the rounded corner cutting, ensuring the slag removal effect at the cut and the surface quality of the rounded corner cut of the steel, and reducing the amount of cleaning work after the rounded corner cutting of the steel. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0025] Figure 1 This is a three-dimensional structural schematic diagram from one perspective of the present invention;

[0026] Figure 2 This is a three-dimensional structural schematic diagram from another perspective of the present invention;

[0027] Figure 3 This is a schematic diagram of the linear guide rail and steel fixing assembly in this invention.

[0028] Figure 4 This is a cross-sectional view of the U-shaped frame structure in this invention;

[0029] Figure 5 This is a schematic diagram of the horizontal slider and rectangular support structure in this invention;

[0030] Figure 6 This is a cross-sectional view of the oblique frame portion structure in this invention;

[0031] Figure 7 This is a schematic diagram of a portion of the adaptive cutting and slag removal component in this invention;

[0032] Figure 8 This is a cross-sectional view of the sealing sleeve frame structure in this invention;

[0033] Figure 9This is a schematic diagram of one perspective of the structure of the slag discharge self-adjusting component in this invention;

[0034] Figure 10 This is a schematic diagram of another perspective of the structure of the slag discharge self-adjusting component in this invention;

[0035] Figure 11 This is a schematic diagram of the sliding frame structure in this invention.

[0036] Reference numerals: 1. Base; 2. Linear guide rail; 3. Electric slide; 4. Steel fixing assembly; 41. Concave bottom frame; 42. Support frame; 43. Hydraulic push rod; 44. Fixed abutment plate; 5. U-shaped frame; 6. Rounded corner positioning assembly; 61. Vertical slide frame; 62. Vertical slider; 63. Horizontal slide rail; 64. Horizontal slider; 65. Rectangular bracket; 66. Vertical lead screw; 67. Horizontal lead screw; 68. Servo motor; 7. Telescopic guide component; 71. Slanted sleeve frame; 72. Telescopic sleeve plate; 73. Abutment roller; 74. Middle partition plate; 75. Alloy tension spring; 8. Adaptive cutting and slag removal assembly; 81. Shaft seat; 82. Low-speed motor; 83. Rotating bracket; 8 4. Sealing sleeve frame; 85. Control piston; 86. Sealing cavity; 87. Hydraulic oil pump; 88. Hydraulic hose; 89. Variable diameter bracket; 801. Plasma cutting torch head; 9. Slag discharge self-adjusting component; 91. Support plate; 92. Lateral bracket; 93. Small motor; 94. Reciprocating screw; 95. Reciprocating slider; 96. Telescopic connecting rod; 97. Rotating frame; 98. Air nozzle; 99. High-pressure air pump; 901. High-pressure pneumatic hose; 902. L-shaped bracket; 903. Limiting sliding hole; 904. Sliding frame; 905. Tooth row; 906. Gear; 907. Collar frame; 908. Variable resistance rod; 909. Sliding plate; 10. Vision sensor; 11. PLC controller. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0038] The present invention will be further described below with reference to embodiments.

[0039] Example: Refer to Figures 1 to 11 A manufacturing device for cutting steel, comprising:

[0040] A base 1 is provided, and a linear guide rail 2 is fixedly installed on the upper surface of the base 1. An electric slide block 3 is slidably installed on the inner side of the linear guide rail 2. The linear guide rail 2 and the electric slide block 3 are of model BSM-H20-L60-S1000 from Shanglong Automation. A steel fixing component 4 and a U-shaped frame 5 are fixedly connected to the upper surface of the electric slide block 3. The steel fixing component 4 includes a concave bottom frame 41 fixedly connected to the upper surface of the electric slide block 3 and two support frames 42. A hydraulic push rod 43 is fixedly installed on the side wall of each of the two support frames 42. The hydraulic push rod 43 is an electro-hydraulic push rod of model DYTF10000-40. A fixed stop plate 44 is fixedly connected to the telescopic end of each of the two hydraulic push rods 43.

[0041] Specifically, the surface of the fixed support plate 44 is covered with a polyurethane anti-slip pad with a thickness of 5mm and a Shore hardness of 60A, which increases friction and prevents steel displacement.

[0042] A rounded corner positioning component 6 is fixedly connected to the inner wall of the U-shaped frame 5. The rounded corner positioning component 6 includes a vertical slide frame 61 fixedly connected to the inner wall of the U-shaped frame 5, a vertical slider 62 slidably connected to the inner side of the vertical slide frame 61, a horizontal slide rail 63 fixedly connected to the outer wall of the vertical slider 62, a horizontal slider 64 slidably connected to the inner side of the horizontal slide rail 63, and a rectangular bracket 65 fixedly connected to the outer wall of the horizontal slider 64. The rounded corner positioning component 6 also includes a vertical lead screw 66 rotatably connected to the side wall of the vertical slide frame 61. The vertical slider 62 and the vertical lead screw 66 are threadedly rotated. A horizontal lead screw 67 is rotatably connected to the side wall of the horizontal slide rail 63. The horizontal lead screw 67 and the horizontal slider 64 are threadedly rotated. Servo motors 68 are fixedly installed on the outer walls of both the vertical slide frame 61 and the horizontal slide rail 63. The servo motors 68 are model 80DK-M07725. The output ends of the two servo motors 68 are fixedly connected to the ends of the vertical lead screw 66 and the horizontal lead screw 67, respectively.

[0043] Specifically, the PLC controller 11 can control the two servo motors 68 to run synchronously, that is, the vertical lead screw 66 and the horizontal lead screw 67 can rotate synchronously in the same direction, so that the vertical slider 62 and the horizontal slider 64 can move up and down and left and right synchronously respectively, thereby stably driving the rectangular bracket 65 to move along the 45-degree downward extension line of the rounded corner center.

[0044] A telescopic guide component 7 is fixedly connected to the inner side of the rectangular bracket 65. The telescopic guide component 7 includes an inclined sleeve frame 71 fixedly connected to the inner side of the rectangular bracket 65. The two axial side walls of the inclined sleeve frame 71 are slidably connected to telescopic sleeve plates 72. The ends of the two telescopic sleeve plates 72 located outside the inclined sleeve frame 71 are rotatably connected to abutment rollers 73. A middle partition plate 74 is fixedly connected to the inner wall of the inclined sleeve frame 71. Multiple alloy tension springs 75 are fixedly connected between the ends of the two telescopic sleeve plates 72 located inside the inclined sleeve frame 71 and the middle partition plate 74. The alloy tension springs 75 are made of 65Mn manganese steel with an elastic coefficient of 20N / mm to ensure sufficient tension on the telescopic sleeve plates 72 and a working stroke ≤50mm.

[0045] By driving the vertical slider 62 and the horizontal slider 64 to move the two abutting rollers 73 in coordination, the two abutting rollers 73 are brought into contact with the side of the steel. Then, the two servo motors 68 are controlled to run synchronously, so that the rectangular bracket 65 can move along the straight line at a 45-degree angle downward from the center of the rounded corner. The two abutting rollers 73 move synchronously relative to the side of the steel and automatically extend under the tension of the alloy tension spring 75, so that the two abutting rollers 73 can always be tightly pressed against the side of the steel, realizing the auxiliary positioning and support of the steel, ensuring the positioning accuracy of the rounded corner center, and finally aligning the rotation axis of the low-speed motor 82 with the center of the rounded corner, the precise positioning of the rounded corner center can be completed quickly, improving the manufacturing efficiency of steel rounded corner cutting and ensuring the positioning accuracy and processing accuracy of steel rounded corner cutting.

[0046] Specifically, during the movement of the rectangular support 65 along the straight line at a 45-degree angle downward from the center of the rounded corner, the rectangular support 65 is in a state of moving closer to the center point of the steel. When the rectangular support 65 is on the straight line at a 45-degree angle downward from the center of the rounded corner, the radius of the rounded corner can be adjusted by changing the distance between the axis of the low-speed motor 82 and the axis of the plasma cutting torch 801.

[0047] An adaptive cutting and slag removal assembly 8 is fixedly connected to the outer wall of a rectangular support 65. The adaptive cutting and slag removal assembly 8 includes a shaft seat 81 fixedly connected to the outer wall of the rectangular support 65. A low-speed motor 82 (model YE3-90S-4) is fixedly mounted on the outer wall of the shaft seat 81. A rotating support 83 is fixedly connected to the outer wall of the output end of the low-speed motor 82. A sealing frame 84 is fixedly connected to the end of the rotating support 83. A control piston 85 is slidably connected to the inner wall of the sealing frame 84. The control piston 85 is in contact with the sealing frame 84. A sealing cavity 86 is formed between the inner wall of the sleeve frame 84 and the inner bottom surface of the sealing sleeve frame 84. The sealing cavity 86 is filled with hydraulic oil. A hydraulic oil pump 87 is fixedly installed on the outer wall of the shaft seat 81. The hydraulic oil pump 87 is model IPH-2B-3.5-11. The suction port of the hydraulic oil pump 87 is connected to the sealing sleeve frame 84 through a hydraulic hose 88. A variable diameter bracket 89 is fixedly connected to the outer wall of the control piston 85. A plasma cutting gun head 801 is fixedly installed at the end of the variable diameter bracket 89 away from the sealing sleeve frame 84.

[0048] Specifically, the plasma cutting torch head 801 is connected to an LGK-100 plasma cutting machine with a cutting current of 30-100A, a cutting thickness of 3-50mm, and an arc starting voltage of 220V.

[0049] After receiving the required fillet radius value, the PLC controller 11 controls the hydraulic oil pump 87 to operate. The hydraulic oil pump 87 pumps or extracts hydraulic oil into the sealing cavity 86 through the hydraulic hose 88 to change the pressure in the sealing cavity 86 and drive the control piston 85 to move. This causes the variable diameter bracket 89 to extend or retract relative to the sealing sleeve 84, thereby changing the overall length of the rotating bracket 83, the sealing sleeve 84, and the variable diameter bracket 89. This allows for rapid adjustment of the cutting radius of the steel fillet, enabling it to adapt to steel fillet cutting operations of different sizes and fillet radii, thus improving the applicability of steel cutting.

[0050] Specifically, before the rotation axis of the low-speed motor 82 aligns with the center of the fillet, the variable diameter bracket 89 has already moved telescopically relative to the sealing sleeve 84, and the distance between the axis of the low-speed motor 82 and the axis of the plasma cutting torch 801, i.e. the radius of the fillet to be cut, has been adjusted.

[0051] A slag discharge self-adjusting component 9 is fixedly connected to the outer wall of the variable diameter support 89. The slag discharge self-adjusting component 9 includes a support plate 91 fixedly connected to the outer wall of the variable diameter support 89. Two side supports 92 are fixedly connected to the outer wall of the support plate 91. A small motor 93 is fixedly installed on the outer wall of one of the side supports 92. The small motor 93 is a small high-speed brushless DC motor of model KBL2838. A reciprocating screw 94 is fixedly connected to the output end of the small motor 93. A reciprocating slider 95 is threaded on the outer peripheral wall of the reciprocating screw 94. The outer wall of the reciprocating slider 95 is rotatably connected through a hinge seat. There is a telescopic connecting rod 96, and a rotating frame 97 is fixedly connected between the two side supports 92. The telescopic end of the telescopic connecting rod 96 is rotatably connected to the rotating frame 97, and the telescopic end of the telescopic connecting rod 96 is fixedly connected to the nozzle 98. A high-pressure air pump 99 is fixedly installed on the inner top surface of the U-shaped frame 5. The high-pressure air pump 99 is model Thomas-2688TGHI44. The air outlet of the high-pressure air pump 99 is connected to the nozzle 98 through a high-pressure pneumatic hose 901. The high-pressure air pump 99 delivers dry compressed air to the nozzle 98 at high speed through the high-pressure pneumatic hose 901.

[0052] Specifically, the collar 907 and the reciprocating screw 94 have a sliding fit clearance of 2mm, meaning that the collar 907 does not contact the outer peripheral wall of the reciprocating screw 94, but only limits the movement of the reciprocating slider 95, ensuring the high-speed rotation stability of the reciprocating screw 94.

[0053] Specifically, the outer wall of the plasma cutting torch head 801 is equipped with an arc light protection shield, which can protect the jet nozzle 98 and ensure that the jet nozzle 98 can blow air normally.

[0054] A small motor 93 drives a reciprocating screw 94 to rotate, causing a reciprocating slider 95, which is threadedly engaged with the reciprocating screw 94, to move back and forth linearly along the axis of the reciprocating screw 94. This slider, in turn, drives a jet nozzle 98 to swing back and forth via a telescopic connecting rod 96. A high-pressure air pump 99 delivers high-pressure gas to the jet nozzle 98 through a high-pressure pneumatic hose 901, enabling the jet nozzle 98 to perform oscillating air blowing to remove slag from the rounded corner cut. This allows for repeated air blowing to remove molten slag from the front and side of the rounded corner cut, improving the slag removal effect of steel rounded corner cutting.

[0055] The slag discharge self-adjusting component 9 also includes an L-shaped bracket 902 fixedly connected to the outer wall of the sealing sleeve frame 84. Two limiting sliding holes 903 are provided on the support plate 91, and sliding frames 904 are fixedly connected to each of the two limiting sliding holes 903. Gear racks 905 are fixedly connected to the top of each of the two sliding frames 904. A gear 906 is rotatably connected to the upper surface of the support plate 91 via a pin. Both gear racks 905 mesh with the gear 906 for transmission. One of the sliding frames 904 is fixedly connected to the L-shaped bracket 902, and the bottom ends of both sliding frames 904 are fixedly connected to… The device is equipped with two collar frames 907, both of which are slidably engaged with the reciprocating screw 94. A variable resistance rod 908 is fixedly connected between the two lateral supports 92. Sliding plates 909 are fixedly connected to the outer walls of the two sliding frames 904, and both sliding plates 909 are slidably engaged with the variable resistance rod 908. The two sliding plates 909 and the variable resistance rod 908 form a sliding rheostat. The sliding rheostat and the small motor 93 are electrically connected. During the opposite movement of the two sliding plates 909, the resistance value of the sliding rheostat in the closed circuit of the small motor 93 increases.

[0056] A vision sensor 10 and a PLC controller 11 are fixedly installed on the inner wall of the U-shaped frame 5. The vision sensor 10 is used to monitor the movement position of the steel in real time. The PLC controller 11, the vision sensor 10, two servo motors 68, a low-speed motor 82, a hydraulic oil pump 87, a small motor 93, and a sliding rheostat are electrically connected to an external power supply.

[0057] Specifically, the vision sensor 10 is model MV-EM130M, with a detection accuracy of ±0.03mm and a scanning frequency of 50Hz. The vision sensor 10 collects more than 3 sets of coordinate points on the edge of the steel, fits a straight line using the least squares method, and calculates the center coordinates of the circle by combining the input radius: X0=(X1+X2) / 2±R×cos45°, Y0=(Y1+Y2) / 2±R×sin45°, where X0 and Y0 are the calculated coordinate results, R is the known input fillet radius value, and X1, X2, Y1, and Y2 are the collected coordinate point values;

[0058] When the cutting radius is small, the variable diameter bracket 89 retracts relative to the sealing sleeve 84, the limiting distance between the two collar brackets 907 and the reciprocating slider 95 is lengthened, and the reciprocating slider 95 moves faster, driving the jet nozzle 98 to oscillate rapidly with a larger oscillation angle and a higher oscillation frequency. This ensures that the blowing direction always follows the tangential direction of the cutting point, forming a continuous and coherent positive and lateral blowing force, ensuring the slag removal effect when cutting small radius corners. When the cutting radius is large, the variable diameter bracket 89 extends relative to the sealing sleeve 84. The movement of the two collar frames 907 shortens the limiting distance of the reciprocating slider 95, slows down the reciprocating movement speed of the reciprocating slider 95, and causes the jet nozzle 98 to reciprocate with a smaller swing angle and a lower swing frequency, so as to provide more vertical downward blowing force to the rounded corner cut, improve the accuracy of air blowing and slag removal when cutting large radius rounded corners, and thus can adaptively adjust the swing amplitude and frequency of the swing-type air blowing and slag removal according to the rounded corner cutting radius, ensuring the slag removal effect at the cut and the surface quality of the steel rounded corner cut, and reducing the amount of cleaning work after steel rounded corner cutting;

[0059] Specifically, the PLC controller 11 is a Siemens S7-1200 model. The PLC controller 11 has a built-in PWM control module, that is, the PLC controller 11 has a built-in PWM output function. The PWM output frequency is 1-10kHz, the sampling period is 10ms. The PLC controller 11 receives the resistance value change signal of the sliding rheostat, calculates according to the preset algorithm, and then sends control commands to the small motor 93 through its integrated PWM output port to dynamically adjust the speed of the small motor 93. While reducing the heat of the sliding rheostat, it can more accurately change the oscillation frequency of the jet nozzle 98.

[0060] The working principle of this invention is as follows:

[0061] In use, the steel to be cut is placed on the concave bottom frame 41 of the steel fixing component 4. The two hydraulic push rods 43 are controlled to move, and the two fixed plates 44 are moved by the telescopic ends of the two hydraulic push rods 43 to clamp and fix the steel. Then, the electric slide 3 is controlled to move horizontally relative to the linear guide rail 2 to drive the steel to move. During the movement of the steel, the edge of the steel is scanned by the vision sensor 10 and the position information is transmitted to the PLC controller 11. The operator inputs the required rounded corner radius value to the PLC controller 11. The PLC controller 11 calculates the center coordinate position of the rounded corner to be cut on the surface of the steel based on the edge position of the steel and the rounded corner radius value.

[0062] During the rounded corner center positioning process, the PLC controller 11 drives the two servo motors 68 in the rounded corner positioning assembly 6 to operate. The servo motor 68 on the outer wall of the vertical slide frame 61 drives the vertical lead screw 66 to rotate, which in turn drives the horizontal slide rail 63, the horizontal slide block 64, and the rectangular support 65 to move up and down along the vertical slide frame 61 via the vertical slider 62. Then, the servo motor 68 on the outer wall of the horizontal slide rail 63 drives the horizontal lead screw 67 to rotate, which in turn drives the horizontal slider 64 to move the rectangular support 65, the inclined sleeve 71, and the two abutting rollers 73 to move left and right along the horizontal slide rail 63. The vertical slider 62 and the horizontal slider 64 cooperate. Simultaneously, the two abutting rollers 73 move, causing them to fit against the side of the steel. Then, the two servo motors 68 are controlled to run synchronously, allowing the rectangular bracket 65 to move along the straight line at a 45-degree angle downward from the center of the rounded corner. The two abutting rollers 73 move synchronously against the side of the steel and automatically extend under the tension of the alloy tension spring 75, ensuring that the two abutting rollers 73 always tightly abut against the side of the steel. This provides auxiliary positioning and support for the steel, ensuring the positioning accuracy of the rounded corner center. Finally, the rotation axis of the low-speed motor 82 is aligned with the center of the rounded corner, completing the precise positioning of the rounded corner center.

[0063] When adjusting the fillet radius, the PLC controller 11 receives the required fillet radius value and controls the hydraulic oil pump 87 to run. The hydraulic oil pump 87 pumps or extracts hydraulic oil into the sealing cavity 86 through the hydraulic hose 88 to change the pressure of the sealing cavity 86 and drive the control piston 85 to move, so that the variable diameter bracket 89 extends or retracts relative to the sealing sleeve 84 to change the overall length of the rotating bracket 83, the sealing sleeve 84 and the variable diameter bracket 89, so as to adjust the cutting radius of the steel fillet.

[0064] During rounded corner cutting, the PLC controller 11 controls the low-speed motor 82 to run. The low-speed motor 82 drives the rotating bracket 83, the sealing sleeve 84, the variable diameter bracket 89, and the plasma cutting head 801 to rotate as a whole. The plasma cutting head 801 starts to make uniform circular motion around the pre-positioned center. The plasma cutting head 801 is energized and starts to arc to cut the steel. The radius of the cutting trajectory of the plasma cutting head 801 is the preset rounded corner radius.

[0065] During the rounded corner cutting process, the small motor 93 drives the reciprocating screw 94 to rotate, causing the reciprocating slider 95, which is in screw rotation relative to the reciprocating screw 94, to move back and forth linearly along the axis of the reciprocating screw 94. The telescopic connecting rod 96 drives the jet nozzle 98 to swing back and forth. The high-pressure air pump 99 delivers high-pressure gas to the jet nozzle 98 through the high-pressure pneumatic hose 901, thereby enabling the jet nozzle 98 to swing and blow air to remove slag from the rounded corner cut.

[0066] During the telescopic movement of the variable diameter bracket 89 relative to the sealing sleeve frame 84, the variable diameter bracket 89 moves synchronously, driving the L-shaped bracket 902 to move synchronously. The meshing transmission of the gear rack 905 and gear 906 drives the two sliding frames 904 to move in opposite directions or back to back. Simultaneously, it drives the two collar frames 907 and the two sliding plates 909 to move in opposite directions or back to back, thereby changing the distance between the two collar frames 907 and the resistance value of the sliding rheostat. When the cutting radius is small, the variable diameter bracket 89 retracts relative to the sealing sleeve frame 84, and the two sliding frames 904 move back to back. As the slider moves, the limiting distance between the two collar frames 907 and the reciprocating slider 95 is lengthened, the resistance value of the sliding rheostat decreases, and the current of the small motor 93 increases. A control command is issued at the PWM output port integrated in the PLC controller 11, that is, the equivalent power of the small motor 93 increases under PWM control, so that the small motor 93 drives the reciprocating screw 94 to rotate at a higher speed, the reciprocating slider 95 moves faster, and then drives the jet nozzle 98 to perform rapid reciprocating oscillation with a larger oscillation angle and a higher oscillation frequency.

[0067] When the radius of the cut corner is large, the variable diameter bracket 89 extends and moves relative to the sealing sleeve frame 84, the limiting distance between the two collar frames 907 and the reciprocating slider 95 is shortened, the resistance value of the sliding rheostat increases, the power of the small motor 93 decreases, and the reciprocating slider 95 moves at a slower speed. That is, the jet nozzle 98 reciprocates with a smaller swing angle and a lower swing frequency, providing more vertical downward blowing force to the cut corner and fully removing the slag at the cut corner.

[0068] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A manufacturing apparatus for cutting of steel material, characterized by, The utility model relates to a steel material cutting device, including: Base (1), the upper end surface fixed mounting of base (1) has linear guide rail (2), the inboard sliding mounting of linear guide rail (2) has motorized slide (3), the upper end surface fixed connection of motorized slide (3) has steel material fixed subassembly (4) and U type frame (5), the inwall fixed connection of U type frame (5) has round corner positioning subassembly (6), The round corner positioning subassembly (6) includes a vertical sliding frame (61) fixedly connected to the inner wall of the U-shaped frame (5), a vertical sliding block (62) slidably connected to the inner side of the vertical sliding frame (61), a horizontal sliding rail (63) fixedly connected to the outer wall of the vertical sliding block (62), a horizontal sliding block (64) slidably connected to the inner side of the horizontal sliding rail (63), a rectangular support (65) fixedly connected to the outer wall of the horizontal sliding block (64), and a telescopic guide component (7) fixedly connected to the inner side of the rectangular support (65). The rectangular support (65) is fixedly connected with an adaptive cutting and deslagging assembly (8) on the outer wall.

2. The manufacturing apparatus for cutting steel material according to claim 1, wherein The steel material fixing assembly (4) includes a concave bottom frame (41) fixedly connected to the upper end surface of the motorized slide (3) and two support frames (42), each of which is fixedly installed with a hydraulic push rod (43), and the telescopic ends of the two hydraulic push rods (43) are fixedly connected with fixed abutting plates (44).

3. The manufacturing apparatus for cutting steel material according to claim 1, wherein The round corner positioning subassembly (6) further includes a vertical lead screw (66) rotatably connected to the side wall of the vertical sliding frame (61), the vertical sliding block (62) is threadedly rotatable with the vertical lead screw (66), the horizontal sliding rail (63) side wall rotatably connected with horizontal lead screw (67), the horizontal lead screw (67) and horizontal sliding block (64) threadedly rotatable cooperation, the outer wall of vertical sliding frame (61), horizontal sliding rail (63) all are fixedly installed with servo motor (68), two servo motor (68) output respectively with vertical lead screw (66), horizontal lead screw (67) end fixed connection.

4. The manufacturing apparatus for cutting steel material according to claim 1, wherein The telescopic guide component (7) includes a diagonal sleeve frame (71) fixedly connected to the inner side of the rectangular support (65), two telescopic sleeve plates (72) slidably connected through the two axial side walls of the diagonal sleeve frame (71), two telescopic sleeve plates (72) located at the end of the diagonal sleeve frame (71) are rotatably connected with abutting rollers (73), the inner wall of the diagonal sleeve frame (71) is fixedly connected with a partition plate (74), and a plurality of alloy tension springs (75) are fixedly connected between the end of the two telescopic sleeve plates (72) located in the diagonal sleeve frame (71) and the partition plate (74).

5. The manufacturing apparatus for cutting steel material according to claim 3, wherein The adaptive cutting and slag removal assembly (8) comprises a shaft seat (81) fixedly connected to the outer wall of a rectangular support (65), a low-speed motor (82) is fixedly installed on the outer wall of the output end of the shaft seat (81), a rotating support (83) is fixedly connected to the outer wall of the output end of the low-speed motor (82), a sealing sleeve frame (84) is fixedly connected to the end of the rotating support (83), a control piston (85) is sealingly and slidably connected to the inner wall of the sealing sleeve frame (84), a sealed cavity (86) is formed between the control piston (85) and the inner wall and the inner bottom surface of the sealing sleeve frame (84), the sealed cavity (86) is filled with hydraulic oil, a hydraulic oil pump (87) is fixedly installed on the outer wall of the shaft seat (81), the suction port of the hydraulic oil pump (87) is connected in communication with the sealing sleeve frame (84) through a hydraulic hose (88), a variable-diameter support (89) is fixedly connected to the outer wall of the control piston (85), a plasma cutting torch head (801) is fixedly installed on the end of the variable-diameter support (89) away from the sealing sleeve frame (84), and a slag removal self-adjusting part (9) is fixedly connected to the outer wall of the variable-diameter support (89).

6. The manufacturing apparatus for cutting steel material according to claim 5, wherein The slag removal self-adjusting part (9) comprises a supporting plate (91) fixedly connected to the outer wall of the variable-diameter support (89), two lateral supports (92) are fixedly connected to the outer wall of the supporting plate (91), a small motor (93) is fixedly installed on the outer wall of one of the lateral supports (92), a reciprocating screw (94) is fixedly connected to the output end of the small motor (93), a reciprocating sliding block (95) is threadedly connected to the outer peripheral wall of the reciprocating screw (94), a telescopic connecting rod (96) is rotatably connected to the outer wall of the reciprocating sliding block (95) through a hinged seat, a rotating frame (97) is fixedly connected between the two lateral supports (92), the telescopic end of the telescopic connecting rod (96) is rotatably connected to the rotating frame (97), the telescopic end of the telescopic connecting rod (96) is fixedly connected to a jet nozzle (98), a high-pressure gas pump (99) is fixedly installed on the inner top surface of the U-shaped frame (5), and the gas outlet end of the high-pressure gas pump (99) is connected in communication with the jet nozzle (98) through a high-pressure pneumatic hose (901).

7. The manufacturing apparatus for cutting steel material according to claim 6, wherein The residue self-adjusting component (9) further comprises an L-shaped support (902) fixedly connected to the outer wall of the sealing sleeve frame (84), two limiting sliding holes (903) are formed in the supporting plate (91), two sliding frames (904) are fixedly connected at the limiting sliding holes (903), the top ends of the two sliding frames (904) are fixedly connected with a gear rack (905), a gear (906) is rotatably connected to the upper end face of the supporting plate (91) through a pin shaft, the two gear racks (905) are in meshing transmission cooperation with the gear (906), one of the sliding frames (904) is fixedly connected with the L-shaped support (902), the bottom ends of the two sliding frames (904) are fixedly connected with a sleeve ring frame (907), the two sleeve ring frames (907) are in sliding cooperation with the reciprocating screw rod (94), a variable resistance rod (908) is fixedly connected between the two lateral supports (92), the outer walls of the two sliding frames (904) are fixedly connected with a sliding sheet (909), and the two sliding sheets (909) are in sliding cooperation with the variable resistance rod (908). The two sliding sheets (909) and the variable resistance rod (908) constitute a sliding variable resistor, and the sliding variable resistor and the small motor (93) are electrically connected. During the opposite movement of the two sliding sheets (909), the resistance value of the sliding variable resistor in the closed circuit of the small motor (93) increases.

8. The manufacturing apparatus for cutting steel material according to claim 7, wherein A visual sensor (10) and a PLC controller (11) are fixedly installed on the inner wall of the U-shaped frame (5), the visual sensor (10) is used for monitoring the moving position of the steel material in real time, and the PLC controller (11), the visual sensor (10), the two servo motors (68), the low-speed motor (82), the hydraulic oil pump (87), the small motor (93), the sliding variable resistor and an external power supply are electrically connected.

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