Integrated steel plate longitudinal subdivision production line and working method

Abstract

The invention relates to the technical field of black metal plate machining, and particularly discloses an integrated steel plate longitudinal subdivision production line and a working method. A feeding and stacking rack is used for automatic feeding and stacking management of steel plates; the feeding suction cup crane walking mechanism is provided with a laser range finder. The cantilever type jet printing and typewriting all-in-one machine is used for jet printing identification information on the surface of the steel plate; the laser cutting machine is used for carrying out longitudinal subdivision cutting and transverse edging subdivision cutting on the steel plate; dust removal absorbers are installed on the two sides of the laser cutting workbench and connected with an external dust removal device through pipelines. The discharging and stacking rack is used for automatic discharging and stacking management of steel plates. The processes of feeding, laser cutting, marking, discharging and the like are integrated in the same system, full-process automation is achieved, manual intervention is greatly reduced, the labor cost is reduced, the cutting precision and the marking precision of steel plate longitudinal subdivision are guaranteed, and the product quality stability is improved.

Description

Technical Field

[0001] This invention relates to the field of ferrous metal sheet processing technology, specifically to an integrated steel sheet longitudinal splitting production line and its working method. Background Technology

[0002] The medium and heavy plate processing equipment at a certain base's medium and heavy plate plant currently has two shearing lines, #1 and #2, on a 4300mm production line. These shearing lines are not equipped with slitting shears. For steel plates requiring slitting, the only current method is to cut them online first, then transport them offline for flame cutting. Taking a 1500mm x 2 slitting plate as an example, the basic process is as follows:

[0003] Rolling completed → Online shearing (width fixed length 3000mm) → Collection off the line → Transport to the fire-cutting area → Fire-cutting split (1500mm*2) → Collection and storage.

[0004] The main limiting factor in this process is the fire-cutting operation. Since most of the slit plates are thin (less than 30mm), fire-cutting thin steel plates consumes fire-cutting resources, impacting overall output. Furthermore, fire-cutting is performed using semi-automatic cutting machines, which are inefficient due to space constraints and equipment limitations. Because of the fire-cutting process, the monthly cut and warehousing volume of slit plates is approximately 3000 tons, limiting the designed output of the 4300-line slit plate rolling mill. Currently, narrow-width steel plates are produced directly using a 4300mm rolling mill, resulting in low production efficiency and high costs, thus affecting the total monthly output.

[0005] Adding an online slitting shear would cost approximately 30 million, resulting in high costs and low cost-effectiveness. Therefore, under the current circumstances, the challenge that this new slitting system can solve is how to maximize the cutting of slitting plates with lower costs and higher efficiency. Currently, existing fire-cutting capacity is limited; fire-cutting thin-gauge steel plates consumes fire-cutting resources, affecting the output of thick-gauge steel plates. Within the existing fire-cutting area, each slitting plate requires long-distance loading and unloading, resulting in extremely low work efficiency; the current maximum cutting capacity is 24 plates per shift. To balance fire-cutting capacity and order delivery, some steel plates are rolled using small billets and narrow cross-sections, sacrificing timely output and yield, to achieve rapid delivery. After fire-cutting, the slag between the two steel plates needs to be cleaned individually by lifting them separately. A static stand also needs to be tilted to release magnetic material and remove residual slag and iron oxide scale. If the cleaning standards are not high, the steel plates are easily scratched. Using the current overhead crane for lifting the slitting plates results in poor lifting accuracy, long time consumption, and a high safety risk of plates falling. The current method involves manual marking of steel plates, which is prone to errors and inefficiency. It also requires traversing the plate edges and areas where the plates are split, posing a significant safety risk due to impacts. Manual measurement of dimensions is inaccurate, inefficient, and unreliable.

[0006] Based on the actual situation on site, in order to maximize the processing capacity and rolling efficiency of the 4300mm production line of a medium and heavy plate plant at a certain base, optimize the finishing and collection production line process, enhance the company's competitiveness, and consolidate its position as the most efficient base, the construction of an offline high-efficiency steel plate splitting production line is urgently needed. Therefore, there is an urgent need for a plate processing technology system that can realize multi-process integration, automation, and dust removal function to solve the problems of the existing medium and heavy plate longitudinal cutting and splitting processing process being scattered, having a low degree of automation, and poor dust removal effect. Summary of the Invention

[0007] In view of the problems existing in the prior art, the purpose of this invention is to provide an integrated steel plate longitudinal splitting production line and its working method.

[0008] The technical solution adopted by the present invention to solve its technical problem is: an integrated steel plate longitudinal splitting production line, including a feeding unit, a feeding hoisting unit, an marking unit, a cutting and splitting unit, an unloading hoisting unit, and an unloading unit connected in sequence. The feeding unit includes a feeding stacking platform, which is used for automatic feeding and stacking management of steel plates.

[0009] The loading and hoisting unit includes a loading CNC suction cup crane and a loading suction cup crane traveling mechanism. The loading suction cup crane traveling mechanism is equipped with a laser rangefinder.

[0010] The marking unit includes a cantilever inkjet printer / typewriter, which is used to print marking information on the surface of a steel plate.

[0011] The cutting and slitting unit includes a laser cutting machine and a laser cutting worktable. The laser cutting machine is used to perform longitudinal slitting and transverse edge slitting of steel plates. Dust collectors are installed on both sides of the laser cutting worktable, and the dust collectors are connected to an external dust collection device through pipes.

[0012] The unloading and hoisting unit includes an unloading CNC suction cup crane and an unloading suction cup crane traveling mechanism. The unloading suction cup crane traveling mechanism is equipped with a laser rangefinder.

[0013] The unloading unit includes an unloading stacking platform, which is used for automatic unloading and stacking management of steel plates.

[0014] Specifically, the feeding suction cup crane traveling mechanism controls the feeding CNC suction cup crane to transport the steel plate on the feeding stacking platform to the laser cutting worktable, and the unloading suction cup crane traveling mechanism is equipped with two unloading CNC suction cup cranes, which control the unloading CNC suction cup cranes to transport the cut steel plate to the unloading stacking platform.

[0015] Specifically, the loading CNC suction cup crane has a load capacity of 15 tons, and the unloading CNC suction cup crane has a load capacity of 7.5 tons.

[0016] Specifically, the cantilever inkjet printer / typewriter is connected to an air source control cabinet via a compressed air pipeline, and the air source control cabinet is connected to an external compressed gas device via a compressed air pipeline. The compressed gas device supplies power to the pneumatic components of the cantilever inkjet printer / typewriter.

[0017] Specifically, the laser cutting machine is installed horizontally above the laser cutting worktable. The laser cutting machine moves along the laser cutting worktable. An X-axis cutting host and a Y-axis cutting host are installed on the laser cutting machine. The X-axis cutting host and the Y-axis cutting host are respectively set on both sides of the steel plate to be split. The X-axis cutting host performs horizontal edge splitting cuts on the steel plate, and the Y-axis cutting host performs longitudinal splitting cuts on the steel plate.

[0018] Specifically, the loading and unloading pallet stands are equipped with end-aligning devices on one side and at the head, and the end-aligning devices are push-plate hydraulic cylinders.

[0019] Specifically, a control unit is set on one side of the cutting and splitting unit. The control unit includes an operating table, a control power cabinet, a laser and a pneumatic pump, as well as multiple controllers. The control unit controls the feeding unit, the feeding and hoisting unit, the marking unit, the cutting and splitting unit, the unloading and hoisting unit, and the unloading unit to achieve linkage. The control unit is electrically connected to each unit for automated control.

[0020] A method for operating an integrated steel plate longitudinal splitting production line includes the following steps:

[0021] S1. Confirm the position of the steel plate in the loading area, and use the alignment device to align the steel plate with the loading stack platform.

[0022] S2. Input the steel plate dimensions into the loading unit on the computer operation page, confirm the positions of the cantilever inkjet printer and laser cutter, and start the loading CNC suction cup crane.

[0023] S3. When the CNC suction cup crane returns to the loading position, move the laser cutting machine to the lower right corner of the steel plate, input the steel plate printing size, turn on the red light detection, and start edge calibration.

[0024] S4. Input printing information into the cantilever inkjet printer / typewriter;

[0025] S5. After the laser cutting machine has finished finding the edge, double-click the steel plate information on the computer operation page to view the actual size of the steel plate. Enter the actual size in the center of the graphic correction interface and confirm again that the red light of the cutting machine is on the right edge of the steel plate.

[0026] S6. Select different parameters in the process correction interface according to the different steel plate thicknesses;

[0027] S7. Turn off the red light of the laser cutting machine, open the shutter and click start to start the cutting operation. When the laser cutting machine reaches the control signal area, the cantilever inkjet printer will automatically print the serial number in the same direction. After the serial number printer finishes its operation, it will return to the cleaning position. The laser cutting machine will automatically return to the docking point in the cutting machine loading area.

[0028] S8. Enter the steel plate printing dimensions in the unloading unit on the computer operation page, click start, and the CNC suction cup crane will automatically perform the unloading operation.

[0029] Specifically, in step S3, the printing size of the steel plate is the width plus 20-30mm of allowance.

[0030] The present invention has the following beneficial effects:

[0031] The integrated steel plate longitudinal splitting production line and working method designed in this invention integrates the processes of feeding, laser cutting, marking, and unloading into the same system, realizing full-process automation, greatly reducing manual intervention, lowering labor costs, and improving processing efficiency by more than 30%.

[0032] The integrated steel plate longitudinal splitting production line and working method designed in this invention have a high degree of automation. Through the coordination of the loading and unloading low-frame CNC suction cup crane, anti-sway walking mechanism and control unit, the automatic transfer and processing control of the plates are realized, reducing human error and improving the processing accuracy to ±0.1mm. This ensures the cutting accuracy and marking accuracy of the steel plate longitudinal splitting and improves the stability of product quality.

[0033] This invention relates to an integrated steel plate longitudinal slitting production line and its operating method. It employs a vacuum suction cup assembly and a magnetic adsorption assembly to accommodate the handling needs of steel plates of different specifications and materials, enhancing the production line's versatility. The high-power laser cutting head and precise XY-axis movement mechanism of the laser cutting equipment ensure the high efficiency and accuracy of longitudinal slitting. A cantilevered inkjet printer / typesetter enables the printing of marking information on the steel plate surface, allowing for simultaneous surface printing, side printing, and steel stamping.

[0034] The integrated steel plate longitudinal splitting production line and working method designed in this invention have good dust removal effect. The real-time dust collection and purification of the dust removal unit reduces the dust concentration in the workshop by more than 80%, ensuring the health of operators and meeting environmental protection requirements. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the layout of an integrated steel plate longitudinal splitting production line.

[0036] In the diagram: 1-Loading pallet frame; 2-Unloading pallet frame; 3-Loading CNC suction cup crane; 4-Unloading CNC suction cup crane; 5-Cantilever inkjet printer / typesetter; 6-Laser cutting machine; 7-Laser cutting worktable; 8-X-axis cutting host; 9-Y-axis cutting host; 10-Dust collector; 11-Dust removal device; 12-End trimming device; 13-Loading suction cup crane traveling mechanism; 14-Unloading suction cup crane traveling mechanism; 15-Controller; 16-Compressed air pipeline; 17-Air source control cabinet; 18-Operating table; 19-Control power cabinet; 20-Laser and air source pump. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. 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] like Figure 1 As shown, an integrated steel plate longitudinal slitting production line includes a feeding unit, a feeding hoisting unit, an marking unit, a cutting and slitting unit, an unloading hoisting unit, and an unloading unit connected in sequence.

[0039] The feeding unit includes a feeding pallet frame 1, which is used for automatic feeding and stacking management of steel plates. It features a suction cup suction and release function, with audible and visual alarms when the vacuum pressure is low, and maintains suction for ≥30 minutes after power failure, ensuring the suction cup adhesive strips do not damage the steel plate.

[0040] The loading and hoisting unit includes a loading CNC suction cup crane 3 and a loading suction cup crane traveling mechanism 13. The loading suction cup crane traveling mechanism 13 is equipped with a laser rangefinder, which can accurately position the steel plate with a positioning accuracy of ≤6mm. The lifting trolley also has an anti-sway function, with a sway of ≤±0.5° after reaching the target position, enabling the steel plate to quickly land on the cutting worktable and ensuring the splitting quality. The longitudinal splitting cutting accuracy of the steel plate can reach ±0.1mm. The loading suction cup crane traveling mechanism 13 controls the loading CNC suction cup crane 3 to transport the steel plate from the loading pallet frame 1 to the laser cutting worktable 7.

[0041] The marking unit includes a cantilever inkjet printer / typesetter 5, which is used to print marking information on the surface of a steel plate and can simultaneously perform surface printing, side printing, and steel stamping.

[0042] The cutting and splitting unit includes a laser cutting machine 6 and a laser cutting worktable 7. The laser cutting machine 6 is used to perform longitudinal splitting and transverse edge-cutting of steel plates. Dust collectors 10 are installed on both sides of the laser cutting worktable 7. The dust collectors 10 are connected to an external dust removal device 11 through pipes.

[0043] The unloading and hoisting unit includes an unloading CNC suction cup crane 4 and an unloading suction cup crane traveling mechanism 14. The unloading suction cup crane traveling mechanism 14 is equipped with a laser rangefinder. Two unloading CNC suction cup cranes 4 are set on the unloading suction cup crane traveling mechanism 14. The unloading suction cup crane traveling mechanism 14 controls the unloading CNC suction cup cranes 4 to transport the cut steel plates to the unloading stacking platform 2.

[0044] The unloading unit includes an unloading stacking platform 2, which is used for automatic unloading and stacking management of steel plates.

[0045] The loading CNC suction cup crane 3 has a load capacity of 15 tons, and the unloading CNC suction cup crane 4 has a load capacity of 15 tons (7.5 + 7.5 tons).

[0046] The laser cutting machine 6 has two cutting heads, which are set on both sides of the steel plate to be cut. The power is more than 20 million kilowatts and there is an independent air source pump device.

[0047] Compressed air pipeline 16 is connected to air source control cabinet 17 to supply power to pneumatic equipment such as cantilever inkjet printer and typewriter 5.

[0048] The loading pallet frame 1 and the unloading pallet frame 2 have the function of longitudinal and head edge alignment of steel plates.

[0049] A control unit is set on one side of the cutting and splitting unit. The control unit includes an operating table 18, a control power cabinet 19, a laser and a pneumatic pump 20, and multiple controllers 15. The control unit controls the feeding unit, the feeding hoisting unit, the marking unit, the cutting and splitting unit, the unloading hoisting unit, and the unloading unit to achieve linkage. The control unit is electrically connected to each unit for automated control.

[0050] It also includes a central control system, which is a PLC control system. This system is electrically connected to the feeding unit, feeding and hoisting unit, marking unit, cutting and slitting unit, unloading and hoisting unit, and unloading unit via an industrial bus. It can automatically schedule the action sequence of each device according to production tasks, achieving fully automated operation of the production line. It also has data acquisition and analysis functions, enabling real-time monitoring and optimization of production efficiency and product quality. Safety devices include: laser anti-collision device (deceleration, warning, and stop functions), limit switches (dual limit switches, pre-limit deceleration, and counterweight limit stop), emergency stop button, sliding line protection device and guardrails, and walkways.

[0051] A method for operating an integrated steel plate longitudinal splitting production line includes the following steps:

[0052] 1. Confirm the position of the steel plate in the feeding area, and use the alignment device 12 to align the steel plate with the feeding stack frame 1.

[0053] 2. Input the steel plate dimensions into the loading unit on the computer operation page, confirm the positions of the cantilever inkjet printer / typist 5 and the laser cutter 6, and start the loading CNC suction cup crane 3.

[0054] 3. Once the CNC suction cup crane 3 returns to the loading position, move the laser cutting machine 6 to the lower right corner of the steel plate, input the steel plate printing dimensions, turn on the red light detection, and begin edge calibration.

[0055] 4. Input the printing information into the cantilever inkjet printer / typewriter 5.

[0056] 5. After the laser cutting machine has finished finding the edge, double-click the steel plate information on the computer operation page to view the actual size of the steel plate (add 20-30 mm to the width and adjust according to the actual situation). Enter the actual size in the graphic correction interface and center it. Confirm again that the red light of the cutting machine is on the right edge of the steel plate.

[0057] 6. Select different parameters in the process correction interface according to the different thicknesses of the steel plate.

[0058] 7. Laser cutting machine 6 turns off the red light, turns on the shutter and clicks start to start the cutting operation. When laser cutting machine 6 reaches the control signal area, cantilever inkjet printer 5 automatically prints the serial number in the same direction. After the serial number printer finishes its operation, it returns to the cleaning position. Laser cutting machine 6 automatically returns to the cutting machine loading area docking point, with a tight connection.

[0059] 8. Enter the steel plate printing dimensions in the unloading unit on the computer operation page, click start, and the CNC suction cup crane 4 will automatically perform the unloading operation.

[0060] Example 1:

[0061] like Figure 1 As shown, the layout dimensions of this system are: the feeding unit area is 20000mm long, the processing unit (marking unit and cutting and slitting unit) area is 25000mm long, and the unloading unit area is 20000mm long.

[0062] Feeding process: The boards to be processed are stacked on the feeding stacking platform 1 and transferred to the discharge end of the feeding stacking platform 1 by the feeding suction cup crane traveling mechanism 13. The feeding CNC suction cup crane 3 (load capacity 15 tons) transfers the boards to the feeding end of the laser cutting machine 6. The X-axis cutting host 8, Y-axis cutting host 9 and other detection and positioning mechanisms accurately position the boards.

[0063] Processing flow: Laser cutting machine 6 cuts steel plates, and the fumes generated during cutting are collected by dust collector 10 and purified by dust removal device 11. When laser cutting machine 6 reaches the signal area of ​​controller 15, cantilevered inkjet printer 5 automatically prints serial numbers in the same direction. After the serial number printer finishes its operation, it returns to the cleaning position. After cutting is completed, laser cutting machine 6 automatically returns to the loading area docking point, with a compact connection. The equipment is powered by compressed air pipeline 16 and laser and air source pump 20.

[0064] Material unloading process: The unloading CNC suction cup crane 4 (load capacity 7.5+7.5 tons) transfers the processed sheet from the output end of the laser cutting machine 6 to the unloading stacking platform 2, and stacks it for storage through the unloading suction cup crane traveling mechanism 14.

[0065] Control process: The operator sets the processing parameters on the control panel 18, the control power cabinet 19 supplies power to each device, the compressed air pipeline 16 and the laser and air source pump 20 supply power to the cantilever inkjet printer 5, and multiple controllers 15 realize the coordinated action and status monitoring of each device.

[0066] This embodiment achieves fully automated processing of sheet metal from raw materials to finished products through close cooperation of various units, and has significant application value in the cutting and splitting of ship plates, engineering machinery plates, high-strength plates, etc.

[0067] This invention is not limited to the above-described embodiments. Anyone should know that any structural changes made under the guidance of this invention, and any technical solutions that are the same as or similar to this invention, fall within the protection scope of this invention.

[0068] The technologies, shapes, and structures not described in detail in this invention are all known technologies.

Claims

1. An integrated steel plate longitudinal splitting production line, characterized in that, It includes a feeding unit, a feeding hoisting unit, an identification unit, a cutting and slitting unit, an unloading hoisting unit, and an unloading unit connected in sequence. The feeding unit includes a feeding stacking platform, which is used for automatic feeding and stacking management of steel plates. The loading and hoisting unit includes a loading CNC suction cup crane and a loading suction cup crane traveling mechanism. The loading suction cup crane traveling mechanism is equipped with a laser rangefinder. The marking unit includes a cantilever inkjet printer / typewriter, which is used to print marking information on the surface of a steel plate. The cutting and slitting unit includes a laser cutting machine and a laser cutting worktable. The laser cutting machine is used to perform longitudinal slitting and transverse edge slitting of steel plates. Dust collectors are installed on both sides of the laser cutting worktable, and the dust collectors are connected to an external dust collection device through pipes. The unloading and hoisting unit includes an unloading CNC suction cup crane and an unloading suction cup crane traveling mechanism. The unloading suction cup crane traveling mechanism is equipped with a laser rangefinder. The unloading unit includes an unloading stacking platform, which is used for automatic unloading and stacking management of steel plates.

2. The integrated steel plate longitudinal splitting production line according to claim 1, characterized in that, The feeding suction cup crane traveling mechanism controls the feeding CNC suction cup crane to transport the steel plate on the feeding stacking platform to the laser cutting worktable. The unloading suction cup crane traveling mechanism is equipped with two unloading CNC suction cup cranes, which control the unloading CNC suction cup cranes to transport the cut steel plate to the unloading stacking platform.

3. The integrated steel plate longitudinal splitting production line according to claim 2, characterized in that, The loading CNC suction cup crane has a load capacity of 15 tons, and the unloading CNC suction cup crane has a load capacity of 7.5 tons.

4. The integrated steel plate longitudinal splitting production line according to claim 1, characterized in that, The cantilevered inkjet printer / typewriter is connected to an air source control cabinet via a compressed air pipeline. The air source control cabinet is connected to an external compressed gas device via a compressed air pipeline. The compressed gas device supplies power to the pneumatic components of the cantilevered inkjet printer / typewriter.

5. The integrated steel plate longitudinal splitting production line according to claim 1, characterized in that, The laser cutting machine is mounted horizontally above the laser cutting worktable. The laser cutting machine moves along the laser cutting worktable. An X-axis cutting host and a Y-axis cutting host are installed on the laser cutting machine. The X-axis cutting host and the Y-axis cutting host are respectively set on both sides of the steel plate to be split. The X-axis cutting host performs transverse edge splitting and cutting of the steel plate, and the Y-axis cutting host performs longitudinal splitting and cutting of the steel plate.

6. The integrated steel plate longitudinal splitting production line according to claim 5, characterized in that, Both the loading and unloading pallet stands are equipped with end-aligning devices on one side and at the head, which are push-plate hydraulic cylinders.

7. The integrated steel plate longitudinal splitting production line according to claim 1, characterized in that, A control unit is set on one side of the cutting and splitting unit. The control unit includes an operating table, a control power cabinet, a laser and a pneumatic pump, and multiple controllers. The control unit controls the feeding unit, the feeding and hoisting unit, the marking unit, the cutting and splitting unit, the unloading and hoisting unit, and the unloading unit to achieve linkage. The control unit is electrically connected to each unit for automated control.

8. The working method of the integrated steel plate longitudinal splitting production line according to any one of claims 1-7, characterized in that, Includes the following steps: S1. Confirm the position of the steel plate in the loading area, and use the alignment device to align the steel plate with the loading stack platform. S2. Input the steel plate dimensions into the loading unit on the computer operation page, confirm the positions of the cantilever inkjet printer and laser cutter, and start the loading CNC suction cup crane. S3. When the CNC suction cup crane returns to the loading position, move the laser cutting machine to the lower right corner of the steel plate, input the steel plate printing size, turn on the red light detection, and start edge calibration. S4. Input printing information into the cantilever inkjet printer / typewriter; S5. After the laser cutting machine has finished finding the edge, double-click the steel plate information on the computer operation page to view the actual size of the steel plate. Enter the actual size in the center of the graphic correction interface and confirm again that the red light of the cutting machine is on the right edge of the steel plate. S6. Select different parameters in the process correction interface according to the different steel plate thicknesses; S7. Turn off the red light of the laser cutting machine, open the shutter and click start to start the cutting operation. When the laser cutting machine reaches the control signal area, the cantilever inkjet printer will automatically print the serial number in the same direction. After the serial number printer finishes its operation, it will return to the cleaning position. The laser cutting machine will automatically return to the docking point in the cutting machine loading area. S8. Enter the steel plate printing dimensions in the unloading unit on the computer operation page, click start, and the CNC suction cup crane will automatically perform the unloading operation.

9. The working method of the integrated steel plate longitudinal splitting production line according to claim 8, characterized in that, In step S3, the printing size on the steel plate is the width plus 20-30mm of allowance.

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