Laser numerical control automatic blanking and cutting system and process for pipes

Abstract

The invention relates to a laser numerical control automatic blanking and cutting system and process for pipes, and relates to the technical field of pipe laser cutting. The laser cutting device comprises a laser cutting table, a laser cutting head arranged on the laser cutting table, a supporting plate fixed to the laser cutting head, an oxygen hose communicating with the laser cutting head, an adjusting assembly used for rotating, pushing, dust collecting and discharging of an eccentric pipe, a pushing assembly, a dust collecting assembly and a discharging assembly. The oxygen hose is provided with a quantity control assembly and a speed control assembly which are used for controlling the oxygen output quantity and the oxygen conveying speed. The quantity control assembly comprises a quantity control block movably arranged on the oxygen hose, a detection frame used for detecting the thickness of the eccentric pipe and a quantity control piece used for adjusting the quantity control block. Through cooperation of the quantity control part and the speed control part, the oxygen conveying quantity and the oxygen conveying speed can be accurately controlled, control can be conducted according to the thickness and the temperature when the designated position of the eccentric pipe is cut, and oxygen supply is accurately controlled.

Description

Technical Field

[0001] This application relates to the technical field of laser cutting of pipes, and in particular to a laser numerical control automatic blanking and cutting system and process for pipes. Background Art

[0002] Pipes are materials used for making pipe fittings. High-strength pipes usually need to be laser cut during production to improve the cutting accuracy of the pipes. When the pipes are laser cut, oxygen needs to be input into the laser cutting head to cause a violent oxidation reaction between the molten metal and oxygen, thereby accelerating the cutting speed.

[0003] When pipes are produced, the wall thicknesses of different parts need to be determined according to specific application scenarios. In parts that need to withstand high pressure, thicker wall thicknesses will be designed to increase strength. For some non-critical parts, in order to save materials or reduce weight, thinner wall thicknesses will be designed. For example, when transporting corrosive media and refrigerants in the horizontal section, eccentric pipes are usually used instead of concentric pipes with uniform wall thickness. When transporting anti-corrosive liquids, the pipe is usually not filled completely, so the anti-corrosion performance requirement for the top is lower. The bottom side of the eccentric pipe is thicker than the top side, thus ensuring that the anti-corrosion performance of the bottom side of the eccentric pipe is better than that of the top side.

[0004] When traditional laser equipment laser cuts an eccentric pipe, the oxygen input amount is constant. When the laser cutting head cuts the thinner position of the eccentric pipe, too much oxygen spraying will exacerbate the oxidation reaction during cutting, making the cut section black or dark yellow, and the cutting surface becomes rough, affecting the cutting quality of the eccentric pipe, and it will also cause oxygen waste. When cutting the thicker position of the eccentric pipe, insufficient oxygen supply will affect the cutting speed of the laser cutting head for the eccentric pipe. Summary of the Invention

[0005] In order to solve the problem that the existing eccentric pipe cutting machine is not convenient to control the oxygen input volume and input speed according to the thickness of the eccentric pipe and the temperature during laser cutting, and when the laser cutting head cuts the thinner position of the eccentric pipe, too much oxygen spraying will exacerbate the oxidation reaction during cutting, this application provides a laser numerical control automatic blanking and cutting system and process for pipes.

[0006] The laser numerical control automatic blanking and cutting system and process for pipes provided by this application adopt the following technical solutions: A laser numerical control automatic blanking and cutting system for pipes includes a laser cutting table, a laser cutting head arranged on the laser cutting table, a support plate fixed on the laser cutting head, an oxygen hose communicated with the laser cutting head, and an adjustment component, a pushing component, a dust suction component, and a blanking component for rotating, pushing, dust suction, and blanking of the eccentric pipe; The oxygen hose is provided with a quantity control component and a speed control component for controlling the oxygen output and gas delivery speed; The control quantity assembly comprises a control quantity block movably arranged on the oxygen hose, a detection frame for detecting the thickness of the eccentric tube, and a control quantity member for adjusting the control quantity block, and a gas gap is arranged between the inner side of the oxygen hose and the top of the control quantity block; The speed control assembly includes a venturi tube connected to the oxygen hose, a speed control plate movably arranged on the venturi tube, a speed control member for pushing the speed control plate, and a supply member for supplying oxygen, and a fluid gap is arranged between the inner side of the venturi tube and the right side of the speed control plate; The adjustment component comprises a fixed gear movably arranged on the laser cutting table and a rotating member used for rotationally adjusting the fixed gear.

[0007] By adopting the above technical solution, the laser cutting head can adjust the rotation of the eccentric tube, push the eccentric tube in translation, absorb the debris and collect the material when cutting the eccentric tube through the adjustment component, the pushing component, the dust suction component and the material discharge component, so as to ensure the cutting effect of the eccentric tube and continuously cut the eccentric tube. When the laser cutting head is cutting the eccentric tube, if the temperature of the eccentric tube is too high and the oxygen spraying speed is too slow, the slag and heat generated in the cutting surface cannot be blown away in time, resulting in cracks or gaps on the cutting surface, affecting the quality of the cutting surface. Insufficient oxygen supply will also lead to incomplete cutting, leaving uncut parts or insufficient cutting depth. The quantity control component and the speed control component can control the gas transmission speed and gas transmission volume of the oxygen in the oxygen hose to the laser cutting head. The thickness of the eccentric tube at the specified position when cutting can be detected by the quantity control component. The oxygen transmission volume can be controlled according to the thickness of the eccentric tube at the specified position when cutting by the laser cutting head. The thicker the thickness of the eccentric tube at the specified position when cutting, the more oxygen transmission volume. The amount of oxygen in the oxygen hose entering the laser cutting head can be controlled according to the thickness of the eccentric tube at the specified position when cutting to ensure the cutting speed of the eccentric tube by the laser cutting head. The temperature of the eccentric tube at the specified position when cutting can be detected by the speed control component. The oxygen transmission speed can be controlled according to the temperature of the eccentric tube at the specified position when cutting by the laser cutting head. The higher the temperature of the eccentric tube at the specified position when cutting, the faster the oxygen transmission speed. The speed of oxygen in the oxygen hose entering the laser cutting head can be controlled according to the temperature of the eccentric tube at the specified position when cutting to ensure the cutting quality of the eccentric tube by the laser cutting head. The eccentric tube can be rotated and adjusted through the adjustment component, so that the laser cutting head can perform complete ring cutting on the eccentric tube, and the eccentric tube can be clamped and fixed at the same time; In the prior art, the method of controlling the oxygen supply volume according to the thickness of the pipeline and the oxygen supply speed according to the temperature of the pipeline is usually implemented by controlling the solenoid valve with a meter and a sensor. However, the meter and the sensor may not work stably in harsh environments such as high temperature and dust, affecting the control effect of the solenoid valve. At the same time, the meter and the sensor are arranged next to the laser cutting head and will be interfered by the electromagnetic field, and then the electric control of the oxygen supply volume and the supply speed will affect the accuracy of the control. At the same time, the meter and the sensor are too close to the high temperature area and will be affected by thermal radiation, resulting in high or unstable temperature measurement results, and the control effect of the oxygen supply volume and the supply speed cannot be guaranteed. Compared with the meter and the sensor controlling the oxygen supply volume and the supply speed, the mechanical linkage structure to control the oxygen supply volume and the supply speed has the advantages of high reliability, fast response speed, no need for external energy, low cost and good environmental adaptability.

[0008] Optionally, the control component includes a connecting frame movably arranged on the laser cutting table, an annular spring fixed on the detection frame, a sliding rod fixed on the detection frame, a movable frame fixed on the sliding rod, a limit frame fixed on the support plate, and a compression spring fixed on the limit frame, the compression spring is fixedly connected to the control block, the control block is movably fitted with the movable frame, the detection frame is movably fitted with the inner wall of the eccentric tube, and the annular spring is fixedly connected to the connecting frame.

[0009] By adopting the above technical scheme, the control part can control the gas flow of oxygen into the laser cutting head according to the thickness of the cutting at the specified position of the eccentric tube. When the rotating part drives the eccentric tube to rotate, the thickness shape of the eccentric tube can drive the detection frame and the movable frame to move in turn, so that the annular spring can be subjected to different rebound compressions to detect the thickness of the eccentric tube. When the movable frame moves, it can drive the control block to move, so that the compression spring is in a compressed or rebound state, and the size of the gas gap can be adjusted. When the detection frame moves to a thinner position of the eccentric tube, the gas gap will also be smaller, so the oxygen output can be controlled.

[0010] Optionally, the speed control component includes a mounting bracket fixed on the support plate, a heat block fixed on the mounting bracket, and an adjusting block fixed on the heat block. The adjusting block will expand at high temperatures and contract at low temperatures. The adjusting block can drive the speed control plate to translate due to temperature changes to control the moving range of the speed control plate. The speed control plate is fixedly connected to the adjusting block, and the mounting bracket is fixedly connected to the Venturi tube.

[0011] By adopting the above technical scheme, the speed control component can control the gas delivery speed of oxygen to the laser cutting head according to the cutting temperature of the specified position of the eccentric tube. When the rotating component drives the eccentric tube to rotate, the eccentric tube will be heated and transferred to the heating block in cooperation with the cutting of the eccentric tube by the laser cutting head, so that heat can be transferred to the adjustment block, and the temperature of the eccentric tube during cutting can be detected. The higher the temperature of the eccentric tube during cutting, the greater the expansion of the adjustment block. The movement range of the speed control plate can be controlled by the size of the expansion of the adjustment block. The smaller the movement range of the speed control plate, the larger the fluid gap, and the oxygen outlet speed can be controlled.

[0012] Optionally, the rotating part includes a first push rod, a clamping plate and a transmission gear rotatably arranged on the laser cutting table, and a servo motor fixed on the laser cutting table, the fixed gear and the clamping plate are movably connected to the eccentric tube, the clamping plate and the fixed gear are fixedly connected to the first push rod, the fixed gear is meshed with the transmission gear, and the transmission gear is connected to the output end of the servo motor.

[0013] By adopting the above technical scheme, the rotating part can drive the eccentric tube to rotate, so that the laser cutting head can perform complete ring cutting on the eccentric tube. The first push rod can drive the clamping plate to move, and the eccentric tube can be clamped and fixed in cooperation with the fixed gear. At the same time, the servo motor can drive the transmission gear, the fixed gear, the first push rod, the clamping plate and the eccentric tube to rotate in turn, and then when the eccentric tube rotates, the laser cutting head can cooperate with it to perform complete cutting on the eccentric tube.

[0014] Optionally, the supply component includes an oxygen tank fixed on the laser cutting table, a connecting hose connected to the oxygen tank, and a control valve fixed on the connecting hose, and the connecting hose is connected to the venturi tube.

[0015] By adopting the above technical solution, the supply part can continuously input oxygen into the laser cutting head. By adjusting the control valve, the connecting hose can be opened, and the oxygen in the oxygen tank can be input into the laser cutting head through the connecting hose, the venturi tube and the oxygen hose in sequence, ensuring that the laser cutting head can continuously supply oxygen.

[0016] Optionally, the dust collection assembly includes a support frame and a dust box fixed on the laser cutting table, a collecting hood fixed on the support frame, a reverse blade rotatably arranged in the collecting hood, a wind frame rotatably arranged in the oxygen hose, and a collecting hose connected to the collecting hood, the collecting hose is fixedly connected to the support plate, the reverse blade is coaxially fixed with the wind frame, and the collecting hood is connected to the dust box.

[0017] By adopting the above technical solution, the dust suction component can absorb and clean the debris generated when the eccentric tube is cut. When oxygen flows in the oxygen hose, it can drive the wind frame to rotate, and also drive the reverse blades to rotate to generate suction, so that the debris and dust generated when the eccentric tube is cut can be sucked into the dust collection box through the collecting hose and the collecting cover for collection. At the same time, the faster the oxygen flow rate in the oxygen hose, the faster the wind frame rotates, and the stronger the suction generated by the reverse blade rotation.

[0018] Optionally, the unloading assembly includes an unloading rack fixed on the laser cutting table, a storage box arranged on the unloading rack, and two partition plates fixed in the storage box.

[0019] By adopting the above technical scheme, the unloading component can automatically unload and collect the cut eccentric tubes, and the two partition plates can divide the interior of the storage box into three storage cavities. After the eccentric tube ring cutting is completed, the eccentric tube will fall onto the unloading rack, and the eccentric tube cut by the unloading rack will fall into the storage cavity in the storage box to complete the automatic unloading and sorting of the eccentric tube. When one storage cavity on the storage box is full, the storage box is moved so that the unloading rack continues to automatically collect and store the eccentric tubes in other storage cavities.

[0020] Optionally, the pushing assembly includes a second push rod and a third push rod fixed on the laser cutting table, an electromagnet fixed on the second push rod, a first sensor fixed on the laser cutting table, and a second sensor fixed on a connecting frame, the third push rod is fixedly connected to the connecting frame, the connecting frame is movably fitted with the first sensor, the second sensor is movably fitted with the eccentric tube, and the electromagnet is magnetically connected to the eccentric tube.

[0021] By adopting the above technical scheme, the pushing component can push the eccentric tube and complete the continuous cutting of the eccentric tube. When the laser cutting head completes the ring cutting of a section of the eccentric tube, the rotating part first loses the clamping limit of the eccentric tube, and then adsorbs and releases the eccentric tube through the electromagnet, and cooperates with the second push rod and the electromagnet to push the eccentric tube horizontally, so that the eccentric tube fits with the second sensor, and the movable frame and the control block fit again, indicating that the eccentric tube has been transported to the specified position, and the transportation of the eccentric tube is stopped.

[0022] Optionally, a fourth push rod is fixedly connected to the support frame, a video sensor is fixedly connected to the limit frame, and an output end of the fourth push rod is fixedly connected to the support plate.

[0023] By adopting the above technical solution, the video sensor can monitor and provide feedback on the process of the laser cutting head cutting the eccentric tube in real time. When the laser cutting head needs to be repaired or cleaned, the movable frame is separated from the control block by the third push rod, and then the laser cutting head, the speed control plate and the control block can be driven to move in sequence by the fourth push rod to separate the heated block from the eccentric tube, and the distance between the laser cutting head and the eccentric tube can be adjusted, so that the laser cutting head can be repaired or cleaned.

[0024] A laser numerical control automatic cutting process for pipes, comprising the following steps: S1. The pushing component can rotate, push and clamp the eccentric tube, transport the eccentric tube to the specified cutting position, and cooperate with the laser cutting head to laser cut the eccentric tube; S2. When the eccentric tube is rotating, the control unit can detect the thickness of the eccentric tube at the current cutting position, and the size of the gas gap can be adjusted in coordination with the control unit. The optimal amount of oxygen can be output to the laser cutting head to cut the eccentric tube according to the thickness of the eccentric tube at the specified cutting position; S3. The speed control part and the supply part can detect the cutting temperature of the current position of the eccentric tube, and can adjust the size of the fluid gap at the same time, and can control the oxygen delivery speed according to the temperature of the laser cutting head when cutting the specified position of the eccentric tube; S4. The dust suction component can collect the debris and dust generated when the eccentric tube is cut. The unloading component can automatically unload and sort the eccentric tube after the ring cutting. The pushing component can continuously transport and ring cut the eccentric tube to complete the continuous cutting of the eccentric tube.

[0025] By adopting the above technical scheme, the oxygen supply volume and speed can be controlled according to the thickness of the eccentric tube and the temperature during laser cutting. When the laser cutting head cuts the thinner part of the eccentric tube, it is avoided that the oxygen spraying volume is too large so as to aggravate the oxidation reaction during cutting, and the waste of oxygen is avoided as much as possible. When the temperature of the laser cutting head when cutting the eccentric tube is too high, it is avoided that the slag and heat generated in the cutting surface cannot be blown away in time, resulting in cracks or gaps.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The pushing component can push the eccentric tube with the rotating part, and can transport the eccentric tube to the specified cutting position. At the same time, the eccentric tube can be clamped to prevent the eccentric tube from shaking during cutting. At the same time, the rotating part can adjust the rotation of the eccentric tube. The eccentric tube can be completely cut with the laser cutting head, and the speed of laser cutting of the eccentric tube can be increased with the input of oxygen. For thicker eccentric tubes, it can also easily penetrate, expanding the application range of laser cutting; 2. The control unit can detect the thickness of the eccentric tube at the specified position. When the eccentric tube is cut at a thinner position, the gas gap will be smaller, and the oxygen output will be smaller. This can prevent the laser cutting head from intensifying the oxidation reaction of oxygen on the cutting section when cutting the thinner position of the eccentric tube, making the cutting surface rougher. At the same time, it can also avoid oxygen waste as much as possible. At the same time, it can also prevent the laser cutting head from cutting the thicker position of the eccentric tube due to insufficient oxygen supply, which affects the cutting speed of the eccentric tube by the laser cutting head. Through the output of oxygen by the laser cutting head, the optimal amount of oxygen can be output to the laser cutting head to cut the eccentric tube according to the thickness of the eccentric tube at the specified position when cutting; 3. The speed control component can detect the cutting temperature of the designated position of the eccentric tube, and can control the oxygen delivery speed according to the temperature of the designated position of the eccentric tube when cutting, so as to avoid the oxygen delivery speed being too slow when the temperature of the eccentric tube is too high, resulting in the slag and heat generated in the cutting surface of the eccentric tube being unable to be blown away in time, causing cracks or gaps on the cutting surface, thereby ensuring the quality of the cutting surface of the eccentric tube, and also avoiding the incomplete cutting of the eccentric tube and leaving uncut parts due to insufficient oxygen supply speed. The oxygen delivery volume and speed can be controlled according to the thickness of the eccentric tube and the temperature during laser cutting. The pushing component can complete the automatic unloading and sorting of the eccentric tube, and cooperate with the rotating component to continuously transport, ring cut and automatically unload and store the eccentric tube. At the same time, the cooperation of the quantity control component and the speed control component can accurately control the oxygen delivery volume and speed, which can be controlled according to the thickness and temperature of the designated position of the eccentric tube when cutting, thereby reducing smoke and harmful gases and ensuring the oxygen supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 Appearance diagram of the laser cutting table connection structure in the embodiment of the present application; Figure 3 Appearance diagram of the support plate connection structure in the embodiment of the present application; Figure 4 Appearance diagram of the dust box connection structure in the embodiment of the present application; Figure 5 Appearance diagram of the laser cutting head connection structure in the embodiment of the present application; Figure 6 A cross-sectional view of the venturi tube connection structure in the embodiment of the present application; Figure 7 Embodiments of the present application Figure 3 Enlarged view of point A in the middle.

[0028] Figure numerals: 1, laser cutting table; 2, eccentric tube; 3, oxygen tank; 4, oxygen hose; 5, control valve; 6, venturi tube; 7, connecting hose; 8, laser cutting head; 9, support frame; 10, fourth push rod; 11, support plate; 12, mounting frame; 13, adjustment block; 14, speed control plate; 15, heating block; 16, temperature sensor; 17, third push rod; 18, connecting frame; 19, annular spring; 20, detection frame; 21, sliding rod; 22, movable frame; 23. Limiting frame; 24. Compression spring; 25. Control block; 26. Video sensor; 27. Second sensor; 28. First sensor; 29. ​​Dust box; 30. Collection cover; 31. Collection hose; 32. Wind rack; 33. Reverse blade; 34. Intelligent sensor; 35. Servo motor; 36. Transmission gear; 37. Fixed gear; 38. First push rod; 39. Clamping plate; 40. Second push rod; 41. Electromagnet; 42. Storage box; 43. Unloading rack. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-7 This application is described in further detail.

[0030] Embodiment 1:

[0031] The present application discloses a laser numerical control automatic cutting system for pipes, referring to Figure 1 and Figure 2 , comprising a laser cutting table 1, a laser cutting head 8 arranged on the laser cutting table 1, a support plate 11 fixed on the laser cutting head 8, an oxygen hose 4 connected to the laser cutting head 8, and an adjusting component, a pushing component, a dust collecting component and a material discharging component for rotating, pushing, dusting and discharging the eccentric tube 2; a quantity control component and a speed control component for controlling the oxygen output and gas delivery speed are arranged on the oxygen hose 4; the quantity control component comprises a quantity control block 25 movably arranged on the oxygen hose 4, a detection frame 20 for detecting the thickness of the eccentric tube 2 and a detection frame 21 for detecting the thickness of the eccentric tube 2. A volume control part for adjusting the volume control block 25, a gas gap is set between the inner side of the oxygen hose 4 and the top of the volume control block 25; the speed control component includes a venturi tube 6 connected to the oxygen hose 4, a speed control plate 14 movably arranged on the venturi tube 6, a speed control part for pushing the speed control plate 14 and a supply part for supplying oxygen, a fluid gap is set between the inner side of the venturi tube 6 and the right side of the speed control plate 14; the adjustment component includes a fixed gear 37 movably arranged on the laser cutting table 1 and a rotating part for rotating and adjusting the fixed gear 37.

[0032] The control component includes a connecting frame 18 movably arranged on the laser cutting table 1, an annular spring 19 fixed on the detection frame 20, a sliding rod 21 fixed on the detection frame 20, a movable frame 22 fixed on the sliding rod 21, a limiting frame 23 fixed on the support plate 11 and a compression spring 24 fixed on the limiting frame 23, the compression spring 24 is fixedly connected to the control block 25, the control block 25 is movably fitted with the movable frame 22, the detection frame 20 is movably fitted with the inner wall of the eccentric tube 2, and the annular spring 19 is fixedly connected to the connecting frame 18.

[0033] The speed control component includes a mounting frame 12 fixed on the support plate 11, a heat block 15 fixed on the mounting frame 12, and an adjusting block 13 fixed on the heat block 15. The adjusting block 13 will expand at high temperatures and shrink at low temperatures. The adjusting block 13 can drive the speed control plate 14 to translate due to temperature changes to control the moving range of the speed control plate 14. The speed control plate 14 is fixedly connected to the adjusting block 13, and the adjusting block 13 is located on the inner side of the mounting frame 12. The mounting frame 12 is fixedly connected to the venturi tube 6. The heat block 15 and the mounting frame 12 are both movably fitted with the speed control plate 14. When the eccentric tube 2 is used to transport corrosive media, aluminum alloy is usually selected because aluminum alloy has good corrosion resistance and strength. When the aluminum alloy eccentric tube 2 is cut, the temperature to which the eccentric tube 2 is subjected is generally about 300°C to 600°C. Therefore, the material of the adjusting block 13 is preferably high-temperature plastic. Materials, under other working conditions, high temperature elastomers, high temperature composite materials, high temperature plastic polymers, ceramic-based composite materials, natural rubber, styrene-butadiene rubber, nitrile rubber and EPDM rubber and other materials can also be selected. Any material that can withstand 300°C without change and can expand and contract within 300°C to 600°C can be used. The selected materials have excellent high temperature performance, mechanical strength, fatigue resistance and corrosion resistance, which can ensure that the adjustment block 13 can be used for a long time and the service life of the adjustment block 13 can be guaranteed. The oxygen transmission speed is controlled by adjusting the size of the temperature expansion of the adjustment block 13 to ensure the control effect of the oxygen transmission speed. The temperature sensor 16 is arranged on the mounting frame 12, and the video sensor 26 is arranged on the limit frame 23 to avoid the video sensor 26 and the temperature sensor 16 from being damaged by the influence of high temperature, and can be slightly away from the laser cutting head 8.

[0034] The rotating part includes a first push rod 38 rotatably arranged on the laser cutting table 1, a clamping plate 39 and a transmission gear 36, and a servo motor 35 fixed on the laser cutting table 1. A fixed through hole is arranged on the fixed gear 37, and the eccentric tube 2 is located on the inner side of the fixed through hole. The fixed gear 37 and the clamping plate 39 are both movably connected to the eccentric tube 2, the clamping plate 39 and the fixed gear 37 are both fixedly connected to the first push rod 38, the fixed gear 37 is meshed with the transmission gear 36, and the transmission gear 36 is connected to the output end of the servo motor 35.

[0035] The supply parts include an oxygen tank 3 fixed on the laser cutting table 1, a connecting hose 7 connected to the oxygen tank 3, and a control valve 5 fixed on the connecting hose 7. The connecting hose 7 is connected to the venturi tube 6. The venturi tube 6 is provided with a connecting square hole. The speed control plate 14 is slidably connected to the connecting square hole to prevent the oxygen in the venturi tube 6 from being released from the connecting square hole while the speed control plate 14 slides. A fixed square hole is provided on the mounting frame 12. The speed control plate 14 is slidably connected to the fixed square hole. The speed control plate 14 is T-shaped. A pressure gauge is connected to the oxygen tank 3. The connecting hose 7 can be opened and deflated through the control valve 5. When the oxygen in the oxygen tank 3 is used up, the control valve 5 and the connecting hose 7 can be disassembled to add oxygen to the oxygen tank 3. The remaining oxygen in the oxygen tank 3 can be monitored by the pressure gauge.

[0036] The dust collection assembly includes a support frame 9 and a dust box 29 fixed on the laser cutting table 1, a collecting hood 30 fixed on the support frame 9, a reverse blade 33 rotatably arranged in the collecting hood 30, a wind frame 32 rotatably arranged in the oxygen hose 4, and a collecting hose 31 connected to the collecting hood 30, the collecting hose 31 is fixedly connected to the support plate 11, the reverse blade 33 is coaxially fixed with the wind frame 32, the collecting hood 30 is connected to the dust box 29, the inlet of the collecting hose 31 is located next to the laser cutting head 8, a connecting door is movably connected to the dust box 29, and an air vent is arranged on the dust box 29. The air vent can make the reverse blade 33 ventilate the dust box 29 when driving the dust collection, and the debris and dust inside the dust box 29 can be cleaned by opening the connecting door.

[0037] The unloading assembly includes an unloading rack 43 fixed on the laser cutting table 1, a storage box 42 arranged on the unloading rack 43, two partitions fixed in the storage box 42, and a movable door movably arranged on the storage box 42. The storage box 42 is provided with three loading holes.

[0038] The pushing assembly includes a second push rod 40 and a third push rod 17 fixed on the laser cutting table 1, an electromagnet 41 fixed on the second push rod 40, a first sensor 28 fixed on the laser cutting table 1, and a second sensor 27 fixed on the connecting frame 18. The third push rod 17 is fixedly connected to the connecting frame 18, the connecting frame 18 is movably fitted with the first sensor 28, the second sensor 27 is movably fitted with the eccentric tube 2, the electromagnet 41 is magnetically connected to the eccentric tube 2, a sliding hole is opened on the connecting frame 18, the sliding rod 21 is slidably connected to the sliding hole, the top of the detection frame 20 is an arc surface, the connecting frame 18 is opened with a connecting hole, and the detection frame 20 is slidably connected to the connecting hole.

[0039] A fourth push rod 10 is fixedly connected to the support frame 9, a temperature sensor 16 is fixedly connected to the mounting frame 12, a video sensor 26 is fixedly connected to the limit frame 23, and an intelligent sensor 34 is fixedly connected to the laser cutting table 1. The output end of the fourth push rod 10 is fixedly connected to the support plate 11, the temperature sensor 16 is movably fitted with the adjustment block 13, the laser cutting head 8, the temperature sensor 16, the video sensor 26, the servo motor 35, the first sensor 28, the second sensor 27, the first push rod 38, the second push rod 40, the third push rod 17 and the fourth push rod 10 are all electrically connected to the intelligent sensor 34, and the laser cutting head 8, the temperature sensor 16, the video sensor 26, the servo motor 35, the first sensor 28, the second sensor 27, the first push rod 38, the second push rod 40, the third push rod 17 and the fourth push rod 10 can be started and shut down at a scheduled time through the intelligent controller, and the video sensor 26 is electrically connected to the fourth push rod 10.

[0040] The implementation principle of a laser numerical control automatic cutting system for pipes in the embodiment of the present application is as follows: (1) The eccentric tube 2 is inserted into the fixed gear 37. The eccentric tube 2 can be pushed by the electromagnet 41 through the adsorption and release of the eccentric tube 2, and the second push rod 40 pushes the electromagnet 41 to move. When the eccentric tube 2 fits with the second sensor 27, it means that the eccentric tube 2 has been transported to the specified position. The transportation of the eccentric tube 2 is stopped, and the clamping plate 39 can be driven by the first push rod 38 to move, and the eccentric tube 2 is clamped and fixed by the fixed gear 37 to prevent the eccentric tube 2 from shaking during cutting, so as to ensure the laser cutting effect of the eccentric tube 2. (2) When the eccentric tube 2 is fitted with the second sensor 27, the eccentric tube 2 will push the arc surface of the detection frame 20, and the annular spring 19 will be in a compressed state, which will drive the detection frame 20, the sliding rod 21 and the movable frame 22 to move downward in sequence, so that the inner wall of the eccentric tube 2 is fitted with the top of the detection frame 20. The eccentric tube 2 can be laser cut by the laser cutting head 8, and the servo motor 35 can drive the transmission gear 36, the fixed gear 37, the first push rod 38, the clamping plate 39 and the eccentric tube 2 to rotate in sequence. When the eccentric tube 2 rotates, the laser cutting head 8 can cooperate to completely cut the eccentric tube 2; (3) When the laser cutting head 8 cuts the eccentric tube 2, the control valve 5 is adjusted to open the connecting hose 7, and the oxygen in the oxygen tank 3 is sequentially input into the laser cutting head 8 through the connecting hose 7, the venturi tube 6 and the oxygen hose 4. The laser cutting head 8 cooperates with the input of oxygen to increase the speed of laser cutting of the eccentric tube 2. For thicker eccentric tubes 2, it can also easily penetrate them, thereby expanding the application scope of laser cutting and ensuring that the laser cutting head 8 continuously supplies oxygen. (4) When the eccentric tube 2 rotates, the thickness shape of the eccentric tube 2 can drive the detection frame 20, the sliding rod 21 and the movable frame 22 to move in turn, so that the annular spring 19 can be subjected to different rebound compressions, and the thickness of the eccentric tube 2 can be detected. When the movable frame 22 moves, it can drive the control block 25 to move so that the compression spring 24 is in a compressed state or a rebound state, and the size of the gas gap between the inner side of the oxygen hose 4 and the top of the control block 25 can be adjusted. When the detection frame 20 moves to a thinner position of the eccentric tube 2, the range of movement of the control block 25 driven by the movable frame 22 is also smaller, and the gas gap is also smaller, so the oxygen output is also smaller, so as to avoid the laser cutting head 8 cutting the thinner eccentric tube 2. When the laser cutting head 8 is at a position where the eccentric tube 2 is thicker, the oxidation reaction of oxygen on the cutting section is intensified, making the cutting surface rougher. At the same time, oxygen waste can be avoided as much as possible. At the same time, insufficient oxygen supply can be avoided when the laser cutting head 8 is cutting a thicker position of the eccentric tube 2, which affects the cutting speed of the laser cutting head 8 on the eccentric tube 2. Therefore, the output of oxygen by the laser cutting head 8 can be controlled according to the thickness of the laser cutting head 8 cutting the specified position of the eccentric tube 2. When the laser cutting head 8 cuts a thinner position of the eccentric tube 2, the oxygen output will decrease. When the laser cutting head 8 cuts a thicker position of the eccentric tube 2, the oxygen output will increase. The optimal amount of oxygen can be output to the laser cutting head 8 according to the thickness of the eccentric tube 2 when cutting the specified position to cut the eccentric tube 2. (5) When the laser cutting head 8 cuts the eccentric tube 2, the eccentric tube 2 will be heated. When the eccentric tube 2 is heated, the heat will be transferred to the heating block 15 and then transfer heat to the regulating block 13. The regulating block 13 can detect the temperature of the eccentric tube 2 when it is cut. When the temperature of the eccentric tube 2 is high, the regulating block 13 will expand due to the high temperature. Therefore, the expansion and contraction of the regulating block 13 will change with the temperature of the eccentric tube 2 when it is cut. The expansion and contraction of the regulating block 13 will drive the speed control plate 14 to move, and adjust the size of the fluid gap between the inner side of the venturi tube 6 and the right side of the speed control plate 14. When the temperature of the regulating block 13 is high, the expansion will be greater, the range of movement of the speed control plate 14 will be greater, the fluid gap will be smaller, and the speed of oxygen passing through the fluid gap will be faster. The oxygen delivery speed can be controlled according to the temperature of the heat when the laser cutting head 8 cuts the specified position of the eccentric tube 2; (6) When the temperature of the laser cutting head 8 is higher when cutting the designated position of the eccentric tube 2, the oxygen flow rate is faster; when the temperature of the laser cutting head 8 is lower when cutting the designated position of the eccentric tube 2, the oxygen flow rate is slower. The supply speed of oxygen from the venturi tube 6 to the oxygen hose 4 can be accurately controlled according to the cutting temperature of the designated position of the eccentric tube 2. The supply speed of oxygen from the oxygen hose 4 to the laser cutting head 8 can be controlled to avoid the situation where the temperature of the eccentric tube 2 is too high and the oxygen delivery speed is too slow, resulting in the slag and heat generated in the cutting surface of the eccentric tube 2 not being blown away in time, causing cracks or notches on the cutting surface. The oxygen output speed can be controlled according to the temperature of the cutting surface of the eccentric tube 2 to ensure the quality of the cutting surface of the eccentric tube 2. At the same time, it can also avoid the situation where the eccentric tube 2 is not cut completely due to insufficient oxygen supply speed, leaving uncut parts. (7) When oxygen flows in the oxygen hose 4, the flow rate of oxygen can drive the wind frame 32 to rotate, and then drive the reverse blade 33 to rotate to generate suction. The debris and dust generated when the eccentric tube 2 is cut can be sucked into the dust box 29 through the collecting hose 31 and the collecting cover 30 for collection, so as to achieve the purpose of dust collection when the eccentric tube 2 is cut, so as to ensure the hygiene when the eccentric tube 2 is cut. At the same time, the faster the flow rate of oxygen in the oxygen hose 4, the stronger the suction force generated by the wind frame 32 driving the reverse blade 33 to rotate. High-temperature cutting will generate more debris, smoke and harmful gases. Improving the suction force can more effectively remove the debris and ensure the safety and cleanliness of the working environment. The oxygen delivery volume and speed can be accurately controlled, which can reduce smoke and harmful gases, ensure the oxygen supply, accurately control the oxygen supply, and improve the cutting efficiency of the eccentric tube 2. (8) The two partition plates can divide the interior of the storage box 42 into three storage chambers to ensure the effect and quantity of the eccentric tube 2 sorting. After the laser cutting head 8 completes the circumferential cutting of the eccentric tube 2, the eccentric tube 2 will fall onto the unloading rack 43, and then flow into the storage box 42, and can roll into the storage chamber through the loading hole to complete the automatic unloading and sorting of the eccentric tube 2. When one storage chamber on the storage box 42 is full, the storage box 42 is moved to align the unloading rack 43 with other loading holes of the storage box 42, and the eccentric tube 2 can continue to be automatically collected and stored in other storage chambers, which can ensure the quantity of the eccentric tube 2 collected and the effect of the automatic unloading and storage of the eccentric tube 2. The eccentric tube 2 stored in the storage box 42 can be taken out by opening the movable door; (9) After the laser cutting head 8 has cut a section of the eccentric tube 2, the video sensor 26 will transmit a signal to the first sensor 28, the second sensor 27, the electromagnet 41, the second push rod 40 and the third push rod 17. The third push rod 17 can sequentially drive the connecting frame 18, the movable frame 22, the sliding rod 21 and the speed control plate 14 to move leftward, so that the connecting frame 18 is separated from the first sensor 28, and the movable frame 22 is separated from the control block 25. The connecting frame 18 and the speed control plate 14 can be removed from the eccentric tube 2 to avoid the eccentric tube 2 being disturbed by the connecting frame 18 and the speed control plate 14 during cutting. After the eccentric tube 2 is cut, the third push rod 17 can sequentially drive the connecting frame 18, the movable frame 22, the sliding rod 21 and the speed control plate 14 to move rightward. When the first sensor 28 is again fitted with the connecting frame 18, it means that the connecting frame 18 has moved to the specified position. The first sensor 2 8 will transmit a signal to the third push rod 17 to stop driving, keep the connecting frame 18, the movable frame 22 and the speed control plate 14 in the current state, and then re-adsorb the eccentric tube 2 through the electromagnet 41, and at the same time drive the clamping plate 39 to move through the first push rod 38, so that the clamping plate 39 loses the limit on the eccentric tube 2, and finally adsorbs and releases the eccentric tube 2 through the electromagnet 41, and cooperates with the second push rod 40 and the electromagnet 41 to push and translate the eccentric tube 2, so that the eccentric tube 2 fits with the second sensor 27, the movable frame 22 fits with the control block 25 again, and the inner wall of the eccentric tube 2 fits with the top of the movable frame 22, and then re-clamps and fixes the eccentric tube 2 through the first push rod 38 and the clamping plate 39, so as to facilitate the next section of laser cutting of the eccentric tube 2. Through this method, the eccentric tube 2 can be continuously transported and ring-cut, and finally automatically unloaded and stored, so as to ensure the effect of continuous cutting of the eccentric tube 2; (10) The video sensor 26 can monitor and provide feedback on the cutting process of the eccentric tube 2 by the laser cutting head 8 in real time, and can know the cutting time and cutting quality of the eccentric tube 2 at any time. The temperature sensor 16 can detect the temperature of the adjustment block 13, and then can detect the temperature of the eccentric tube 2 at a specified position when cutting at any time, so as to adjust the cutting parameters, cutting speed and power of the laser cutting head 8, and ensure the safety of laser cutting of the eccentric tube 2; When the laser cutting head 8 needs to be repaired or cleaned, the third push rod 17 drives the connecting frame 18 and the movable frame 22 to move in sequence, so that the movable frame 22 is separated from the metering block 25, and the detection frame 20 is separated from the eccentric tube 2. Then, the fourth push rod 10 can drive the support plate 11, the laser cutting head 8, the limit frame 23, the mounting frame 12 and the Venturi tube 6 to move in sequence, so that the heat receiving block 15 is separated from the eccentric tube 2, and the distance between the laser cutting head 8 and the eccentric tube 2 is adjusted. The laser cutting head 8 can be repaired or cleaned. After the laser cutting head 8 is cleaned, the support plate 11, the laser cutting head 8, the limit frame 23, the mounting frame 12 and the Venturi tube 6 are driven to move again by the fourth push rod 10, so that the heat receiving block 15 fits with the eccentric tube 2. When the heat receiving block 15 fits with the eccentric tube 2, the video sensor 26 will transmit a signal to the fourth push rod 10 to stop driving, and the laser cutting head 8 can be adjusted to the specified cutting position.

[0041] Embodiment 2:

[0042] The embodiment of the present application also discloses a laser numerical control automatic blanking and cutting process for pipes. Based on the laser numerical control automatic blanking and cutting system for pipes in Embodiment 1, it includes the following steps: S1. The pushing component can rotate, push and clamp the eccentric tube 2, convey the eccentric tube 2 to the specified cutting position, and cooperate with the laser cutting head 8 to laser cut the eccentric tube 2; S2. When the eccentric tube 2 rotates, the metering component can detect the thickness of the eccentric tube 2 cut at the current position, and cooperate with the metering component to adjust the size of the gas gap, and the best oxygen amount can be output to the laser cutting head 8 according to the thickness of the eccentric tube 2 cut at the specified position to cut the eccentric tube 2; S3. The speed control component and the supply component can detect the temperature of the eccentric tube 2 cut at the current position, and at the same time can adjust the size of the fluid gap, and the oxygen delivery speed can be controlled according to the temperature of the eccentric tube 2 heated when the laser cutting head 8 cuts at the specified position; S4. The dust collection component can collect the chips and dust generated when the eccentric tube 2 is cut, and the blanking component can automatically blank and sort the eccentric tube 2 after the circumferential cutting is completed. Cooperating with the pushing component, the eccentric tube 2 can be continuously conveyed and circumferentially cut to complete the continuous cutting of the eccentric tube 2.

[0043] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A laser numerical control automatic cutting system for pipes, characterized in that: The invention comprises a laser cutting table (1), a laser cutting head (8) arranged on the laser cutting table (1), a support plate (11) fixed on the laser cutting head (8), an oxygen hose (4) connected to the laser cutting head (8), and an adjustment component, a pushing component, a dust collecting component and a material discharging component for rotating, pushing, dust collecting and discharging an eccentric tube (2); The oxygen hose (4) is provided with a quantity control component and a speed control component for controlling the oxygen output quantity and the gas delivery speed; The control assembly comprises a control block (25) movably arranged on the oxygen hose (4), a detection frame (20) for detecting the thickness of the eccentric tube (2), and a control member for adjusting the control block (25), wherein a gas gap is provided between the inner side of the oxygen hose (4) and the top of the control block (25); The speed control assembly comprises a venturi tube (6) connected to the oxygen hose (4), a speed control plate (14) movably arranged on the venturi tube (6), a speed control member for pushing the speed control plate (14), and a supply member for supplying oxygen, wherein a fluid gap is arranged between the inner side of the venturi tube (6) and the right side of the speed control plate (14); The adjustment component comprises a fixed gear (37) movably arranged on the laser cutting table (1) and a rotating member used for rotationally adjusting the fixed gear (37).

2. The laser numerical control automatic cutting system for pipes according to claim 1 is characterized in that: The control component comprises a connecting frame (18) movably arranged on the laser cutting table (1), an annular spring (19) fixed on the detection frame (20), a sliding rod (21) fixed on the detection frame (20), a movable frame (22) fixed on the sliding rod (21), a limiting frame (23) fixed on the support plate (11), and a compression spring (24) fixed on the limiting frame (23); the compression spring (24) is fixedly connected to the control block (25); the control block (25) is movably fitted with the movable frame (22); the detection frame (20) is movably fitted with the inner wall of the eccentric tube (2); and the annular spring (19) is fixedly connected to the connecting frame (18).

3. The laser numerical control automatic cutting system for pipes according to claim 1 is characterized in that: The speed control component comprises a mounting frame (12) fixed on the support plate (11), a heat receiving block (15) fixed on the mounting frame (12), and an adjusting block (13) fixed on the heat receiving block (15); the adjusting block (13) expands at high temperatures and contracts at low temperatures, so that the adjusting block (13) can drive the speed control plate (14) to move in translation due to temperature changes, thereby controlling the movement range of the speed control plate (14); the speed control plate (14) is fixedly connected to the adjusting block (13); and the mounting frame (12) is fixedly connected to the Venturi tube (6).

4. The laser numerical control automatic cutting system for pipes according to claim 1 is characterized in that: The rotating member comprises a first push rod (38) rotatably arranged on the laser cutting table (1), a clamping plate (39) and a transmission gear (36), and a servo motor (35) fixed on the laser cutting table (1); the fixed gear (37) and the clamping plate (39) are both movably connected to the eccentric tube (2); the clamping plate (39) and the fixed gear (37) are both fixedly connected to the first push rod (38); the fixed gear (37) is meshed with the transmission gear (36); and the transmission gear (36) is connected to the output end of the servo motor (35).

5. The laser numerical control automatic cutting system for pipes according to claim 1 is characterized in that: The supply component comprises an oxygen tank (3) fixed on the laser cutting table (1), a connecting hose (7) connected to the oxygen tank (3), and a control valve (5) fixed to the connecting hose (7); the connecting hose (7) is connected to a venturi tube (6).

6. The laser numerical control automatic cutting system for pipes according to claim 2 is characterized in that: The dust collection assembly comprises a support frame (9) and a dust collection box (29) fixed on the laser cutting table (1), a collection cover (30) fixed on the support frame (9), a reverse blade (33) rotatably arranged in the collection cover (30), a wind frame (32) rotatably arranged in the oxygen hose (4), and a collection hose (31) connected to the collection cover (30), wherein the collection hose (31) is fixedly connected to the support plate (11), the reverse blade (33) is coaxially fixed to the wind frame (32), and the collection cover (30) is connected to the dust collection box (29).

7. The laser numerical control automatic cutting system for pipes according to claim 1 is characterized by: The material unloading assembly comprises a material unloading rack (43) fixed on the laser cutting table (1), a storage box (42) arranged on the material unloading rack (43), and two partition plates fixed in the storage box (42).

8. The laser numerical control automatic cutting system for pipes according to claim 1 is characterized by: The pushing assembly comprises a second push rod (40) and a third push rod (17) fixed on the laser cutting table (1), an electromagnet (41) fixed on the second push rod (40), a first sensor (28) fixed on the laser cutting table (1), and a second sensor (27) fixed on a connecting frame (18), the third push rod (17) being fixedly connected to the connecting frame (18), the connecting frame (18) being movably fitted with the first sensor (28), the second sensor (27) being movably fitted with the eccentric tube (2), and the electromagnet (41) being magnetically connected to the eccentric tube (2).

9. The laser numerical control automatic cutting system for pipes according to claim 6 is characterized by: A fourth push rod (10) is fixedly connected to the support frame (9), a video sensor (26) is fixedly connected to the limit frame (23), and an output end of the fourth push rod (10) is fixedly connected to the support plate (11).

10. A laser CNC automatic cutting process for pipes, based on a laser CNC automatic cutting system for pipes as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. The pushing assembly can rotate, push and clamp the eccentric tube (2), transport the eccentric tube (2) to a designated cutting position, and cooperate with the laser cutting head (8) to perform laser cutting on the eccentric tube (2); S2. When the eccentric tube (2) is rotating, the control unit can detect the thickness of the eccentric tube (2) cut at the current position, and the size of the gas gap can be adjusted in cooperation with the control unit, so that the optimal amount of oxygen can be output to the laser cutting head (8) to cut the eccentric tube (2) according to the thickness of the eccentric tube (2) cut at the specified position; S3. The speed control component and the supply component can detect the temperature of the eccentric tube (2) at the current cutting position, and can adjust the size of the fluid gap, and can control the oxygen delivery speed according to the temperature of the heat when the laser cutting head (8) cuts the eccentric tube (2) at the specified position; S4. The dust collection component can collect the debris and dust generated when the eccentric tube (2) is cut, and the unloading component can automatically unload and sort the eccentric tube (2) after the ring cutting is completed. In conjunction with the pushing component, the eccentric tube (2) can be continuously transported and ring cut to complete the continuous cutting of the eccentric tube (2).

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