Online Addition Device and Method for Arc Extinguishing Plates

Abstract

This invention provides an online device and method for adding arc-extinguishing plates, belonging to the field of steel structure processing technology. The device includes an incoming material position monitoring device, a central control system, an arc-extinguishing plate adding device, and an arc-initiating plate adding device. The incoming material position monitoring device monitors the arrival of the end of the steel plate at the loading end of the conveyor roller and the arrival of the first end at the discharge end. The central control system is connected to the roller control system and the incoming material position monitoring device, and controls the conveyor roller to pause based on the end-end and first-end arrival information, and to start based on the completion of arc-extinguishing plate and arc-initiating plate addition information. The arc-extinguishing plate adding device adds the arc-extinguishing plate to the end of the steel plate; the arc-initiating plate adding device adds the arc-initiating plate to the first end of the steel plate. This invention solves the problem in the prior art of lacking an automatic online addition scheme for arc-extinguishing and arc-initiating plates, which leads to the inability to guarantee the quality of steel welds.

Description

Technical Field

[0001] This invention relates to the field of steel structure processing technology, and more specifically, to an online device and method for adding arc-extinguishing plates. Background Technology

[0002] Welding defects are most likely to occur at the beginning and end of the main weld of T / H steel. Generally, it is necessary to use arc-starting plates and arc-exiting plates (arc-extinguishing plates) to extend the two ends of the weld outwards to avoid the defects at the beginning and end of the joint between the flange and web of the steel, thereby ensuring the stable and uniform quality of the entire weld.

[0003] However, the integrated welding and straightening machine used in the current automated production line for steel section welding lacks the function of automatically adding start-up and extinguishing arc plates. Therefore, it is impossible to automatically add start-up and extinguishing arc plates online, resulting in the inability to guarantee the weld quality of steel section. Summary of the Invention

[0004] In view of the above problems, the purpose of this invention is to provide an online addition device and method for arc initiation and extinguishing plates, so as to solve the problem that the integrated welding and straightening machine used in the automated production line for steel section welding and straightening in the prior art lacks the function of automatically adding arc initiation and extinguishing plates, and cannot realize the automatic online addition of arc initiation and extinguishing plates, resulting in the inability to guarantee the weld quality of steel section.

[0005] The present invention provides an online arc-starting and arc-extinguishing plate adding device for automatically adding arc-starting and arc-extinguishing plates in an automated production line for welding and straightening of structural steel sections. The device includes an incoming material position monitoring device, a central control system, an arc-extinguishing plate adding device, and an arc-starting plate adding device.

[0006] The incoming material position monitoring device is used to monitor the end position information of the steel plate to be welded reaching the loading end of the conveyor roller and the beginning position information of the steel plate reaching the discharge end of the conveyor roller during the process of the steel plate being conveyed to the welding and straightening integrated machine through the conveyor roller.

[0007] The central control system is connected to the roller conveyor control system of the automated steel section welding and straightening production line and the incoming material position monitoring device. It is used to control the conveyor roller conveyor to pause for the first time and generate an arc extinguishing plate addition command based on the acquired end position information; and to control the conveyor roller conveyor to pause for the second time and generate an arc ignition plate addition command based on the acquired beginning position information; and to control the conveyor roller conveyor to start again based on the acquired arc extinguishing plate addition device completion arc extinguishing plate addition information and arc ignition plate addition device completion arc ignition plate addition information.

[0008] The arc-extinguishing plate adding device is connected to the central control system and is used to add the arc-extinguishing plate to the end of the steel plate according to the arc-extinguishing plate adding instruction, and generate arc-extinguishing plate adding information.

[0009] The arc-starting plate adding device is connected to the central control system and is used to add the arc-starting plate to the first end of the steel plate according to the arc-starting plate adding command, and generate arc-starting plate adding information.

[0010] Furthermore, in a preferred configuration, the arc-extinguishing plate adding device includes an arc-extinguishing wing plate adding device disposed at the feeding end of the wing plate conveying roller and an arc-extinguishing web plate adding device disposed at the feeding end of the web plate conveying roller.

[0011] Furthermore, a preferred structure is that the arc-extinguishing wing plate adding device includes an arc-extinguishing wing plate assembly robot and an arc-extinguishing wing plate spot welding robot that is signal-connected to the arc-extinguishing wing plate assembly robot.

[0012] The arc-extinguishing wingplate assembly robot includes an end wingplate thickness detection module, an arc-extinguishing wingplate thickness determination module connected to the end wingplate thickness detection module, and an arc-extinguishing wingplate execution module connected to the arc-extinguishing wingplate thickness determination module.

[0013] The end flange thickness detection module is used to obtain the thickness data of the first flange at the end of the steel section.

[0014] The arc-extinguishing wing plate thickness determination module is used to determine the arc-extinguishing wing plate thickness based on the first wing plate thickness data and a preset arc-extinguishing wing plate selection rule.

[0015] The arc-extinguishing wing plate execution module is used to grab the arc-extinguishing wing plate from the corresponding preset arc-extinguishing wing plate material box according to the thickness of the arc-extinguishing wing plate, and position and assemble it at the end of the steel wing plate according to the preset arc-extinguishing wing plate placement rules, and generate arc-extinguishing wing plate assembly completion information.

[0016] The arc-extinguishing wing plate spot welding robot is used to spot weld and fix the ends of the arc-extinguishing wing plate and the steel wing plate according to the arc-extinguishing wing plate assembly completion information, and generate arc-extinguishing wing plate addition information.

[0017] The arc-extinguishing web plate adding device includes an arc-extinguishing web plate assembly robot and an arc-extinguishing web plate spot welding robot that is signal-connected to the arc-extinguishing web plate assembly robot.

[0018] The arc-extinguishing web assembly robot includes an end-effector web thickness detection module, an arc-extinguishing web thickness determination module connected to the end-effector web thickness detection module, and an arc-extinguishing web execution module connected to the arc-extinguishing web thickness determination module; wherein...

[0019] The end web thickness detection module is used to obtain the first web thickness data of the end of the steel section.

[0020] The arc-extinguishing web thickness determination module is used to determine the arc-extinguishing web thickness based on the first web thickness data and a preset arc-extinguishing web selection rule.

[0021] The arc-extinguishing web plate execution module is used to grab the arc-extinguishing web plate from the corresponding preset arc-extinguishing web plate material box according to the thickness of the arc-extinguishing web plate, and position and assemble it at the end of the steel web plate according to the preset arc-extinguishing web plate placement rules, and generate arc-extinguishing web plate assembly completion information.

[0022] The arc-extinguishing web spot welding robot is used to spot weld and fix the ends of the arc-extinguishing web and the steel web according to the arc-extinguishing web assembly completion information, and generate arc-extinguishing web addition information.

[0023] Furthermore, in a preferred configuration, the selection rule for the preset arc-extinguishing wing plate is as follows:

[0024] When the thickness of the steel wing plate is 10-20mm, the thickness of the arc-extinguishing wing plate is set to 10mm;

[0025] When the thickness of the steel wing plate is 22-30mm, the thickness of the arc-extinguishing wing plate is set to 22mm;

[0026] When the thickness of the steel wing plate is 32-40mm, the thickness of the arc-extinguishing wing plate is set to 32mm;

[0027] The preset arc-extinguishing web selection rule is as follows:

[0028] The thickness of the arc-extinguishing web is the same as the thickness of the steel profile web.

[0029] Furthermore, in a preferred configuration, the pre-defined arc-extinguishing wing plate is placed according to the following rules:

[0030] The arc-extinguishing wing plate is placed at the end of the centerline in the width direction of the steel wing plate and is flush with the upper surface of the steel wing plate.

[0031] The pre-defined rule for placing the arc-extinguishing web is as follows:

[0032] The arc-extinguishing web is placed on the side of the end of the steel web in the width direction and is flush with the thickness surface of the steel web.

[0033] Furthermore, in a preferred configuration, the arc-initiating plate adding device includes an arc-initiating wing plate adding device disposed at the discharge end of the wing plate conveying roller and an arc-initiating web plate adding device disposed at the discharge end of the web plate conveying roller.

[0034] Furthermore, a preferred structure is that the arc-initiating wing plate adding device includes an arc-initiating wing plate assembly robot and an arc-initiating wing plate spot welding robot that is signal-connected to the arc-initiating wing plate assembly robot.

[0035] The arc-inducing wingplate assembly robot includes a front wingplate thickness detection module, an arc-inducing wingplate thickness determination module connected to the front wingplate thickness detection module, and an arc-inducing wingplate execution module connected to the arc-inducing wingplate thickness determination module.

[0036] The first end flange thickness detection module is used to obtain the thickness data of the second flange at the first end of the steel section.

[0037] The arc-initiating wing plate thickness determination module is used to determine the arc-initiating wing plate thickness based on the second wing plate thickness data and a preset arc-initiating wing plate selection rule.

[0038] The arc-inducing wing plate execution module is used to grab the arc-inducing wing plate from the corresponding preset arc-inducing wing plate material box according to the thickness of the arc-inducing wing plate, and position and assemble it at the head end of the steel wing plate according to the preset arc-inducing wing plate placement rules, and generate arc-inducing wing plate assembly completion information.

[0039] The arc-initiating wing plate spot welding robot is used to spot weld and fix the front end of the arc-initiating wing plate and the steel wing plate according to the arc-initiating wing plate assembly completion information, and generate the arc-initiating wing plate addition information.

[0040] The arc-starting web plate adding device includes an arc-starting web plate assembly robot and an arc-starting web plate spot welding robot that is signal-connected to the arc-starting web plate assembly robot.

[0041] The arc-initiating web assembly robot includes a front-end web thickness detection module, an arc-initiating web thickness determination module connected to the front-end web thickness detection module, and an arc-initiating web execution module connected to the arc-initiating web thickness determination module; wherein...

[0042] The first end web thickness detection module is used to obtain the second web thickness data at the first end of the steel section.

[0043] The arc-initiating web thickness determination module is used to determine the arc-initiating web thickness based on the second web thickness data and a preset arc-initiating web selection rule.

[0044] The arc-initiating web plate execution module is used to grab the arc-initiating web plate from the corresponding preset arc-initiating web plate material box according to the thickness of the arc-initiating web plate, and position and assemble it at the first end of the steel web plate according to the preset arc-initiating web plate placement rules, and generate arc-initiating web plate assembly completion information.

[0045] The arc-starting web spot welding robot is used to spot weld and fix the first end of the arc-starting web and the steel web according to the arc-starting web assembly completion information, and generate arc-starting web addition information.

[0046] Furthermore, in a preferred configuration, the selection rule for the preset arc-inducing wing plate is as follows:

[0047] When the thickness of the steel wing plate is 10-20mm, the thickness of the arc-inducing wing plate is set to 10mm;

[0048] When the thickness of the steel wing plate is 22-30mm, the thickness of the arc-inducing wing plate is set to 22mm;

[0049] When the thickness of the steel wing plate is 32-40mm, the thickness of the arc-inducing wing plate is set to 32mm;

[0050] The preset arc-initiating web selection rule is as follows:

[0051] The thickness of the arc-initiating web is the same as the thickness of the steel profile web.

[0052] Furthermore, in a preferred configuration, the pre-defined arc-inducing wing plate is placed according to the following rules:

[0053] The arc-inducing wing plate is placed at the beginning of the centerline in the width direction of the steel wing plate and is flush with the upper surface of the steel wing plate.

[0054] The pre-defined arc-initiating web placement rule is as follows:

[0055] The arc-inducing web is placed on the side of the first end of the steel web in the width direction and is flush with the thickness surface of the steel web.

[0056] The present invention provides an online method for adding arc-initiating and arc-extinguishing plates, which uses the online arc-initiating and arc-extinguishing plate adding device described above to automatically add arc-initiating and arc-extinguishing plates to both ends of the steel profile to be welded in the roller conveyor section of the automated production line for welding and straightening of steel profiles, and includes the following steps:

[0057] The material arrival position monitoring device obtains the end position information of the steel plate to be welded reaching the feeding end of the conveyor roller.

[0058] The central control system, based on the end-point arrival information, links with the roller control system of the automated production line for welding and straightening of structural steel to control the conveyor roller to pause for the first time and generate an arc-extinguishing plate addition command.

[0059] The arc-extinguishing plate adding device adds the arc-extinguishing plate to the end of the steel plate according to the arc-extinguishing plate adding instruction, and generates arc-extinguishing plate adding information.

[0060] The central control system, based on the information indicating the completion of adding the arc-extinguishing plate, coordinates with the roller control system to start the conveyor rollers, so that the conveyor rollers continue to transport the steel plate components with added arc-extinguishing plates.

[0061] The incoming material position monitoring device obtains the information on the first end of the steel plate with added extinguishing plate reaching the discharge end of the conveyor roller.

[0062] The central control system, based on the first end positioning information, works in conjunction with the roller conveyor control system to control the conveyor roller conveyor to pause for the second time and generate an arc-inducing plate addition command.

[0063] The arc-starting plate adding device adds the arc-starting plate to the first end of the steel plate to which the arc-extinguishing plate is added, according to the arc-starting plate adding instruction, and generates arc-starting plate adding information.

[0064] The central control system, based on the information indicating the completion of arc-starting plate addition, works in conjunction with the roller conveyor control system to start the conveyor roller conveyor, thereby sending the steel plate with added arc-starting and arc-extinguishing plates into the integrated welding and straightening machine of the automated steel section welding and straightening production line. This completes the automatic addition of arc-starting and arc-extinguishing plates to both ends of the steel plate to be welded in the roller conveyor transport section of the automated steel section welding and straightening production line.

[0065] As can be seen from the above technical solution, the online addition device and method for arc-extinguishing plates provided by the present invention monitors the position of the steel plate to be welded conveyed on the conveyor roller conveyor through the incoming material position monitoring device. When the end of the steel plate reaches the loading end of the conveyor roller conveyor, the material position monitoring device sends the generated end-position information to the central control system. The central control system, in conjunction with the roller conveyor control system, controls the conveyor roller conveyor to pause and generates an arc-extinguishing plate addition command. The arc-extinguishing plate addition device set at the loading end is controlled to add the arc-extinguishing plate to the end of the steel plate. Based on the arc-extinguishing plate addition completion information obtained from the arc-extinguishing plate addition device, the central control system again in conjunction with the roller conveyor control system to control the conveyor roller conveyor to start, so as to continue to convey the steel plate with the added arc-extinguishing plate forward. When the incoming material position monitoring device detects that the beginning of the steel plate with the added arc-extinguishing plate reaches the discharge end of the conveyor roller conveyor, The system sends the initial position information to the central control system, which then activates the roller conveyor control system to pause the conveyor and generates an arc-starting plate addition command. This command controls the arc-starting plate addition device to add the arc-starting plate to the initial end of the steel section. Based on the completion information obtained from the arc-starting plate addition device, the central control system again activates the roller conveyor control system to start the conveyor, continuing to convey the steel section with the added arc-starting and arc-extinguishing plates. The steel section is then fed into the integrated welding and straightening machine via a flipping frame on the automated steel section welding and straightening production line. The web and flange plates, with the added arc-starting and arc-extinguishing plates, are combined and then fed into the integrated welding and straightening machine to complete the steel section welding. This fills the gap in the existing T / H steel section welding and straightening integrated machine, which lacks automatic addition of arc-starting and arc-extinguishing plates. It can adapt to various situations in steel structure production where the flange and web plates are aligned or misaligned, ensuring the weld quality of the steel section.

[0066] To achieve the foregoing and related objectives, one or more aspects of the invention include the features that will be described in detail below. The following description and accompanying drawings illustrate certain exemplary aspects of the invention. However, these aspects indicate only a few of the various ways in which the principles of the invention can be used. Furthermore, the invention is intended to encompass all such aspects and their equivalents. Attached Figure Description

[0067] Other objects and results of the invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings, and with a more complete understanding of the invention.

[0068] Figure 1 This is a schematic diagram of the online addition device for arc extinguishing plates according to an embodiment of the present invention;

[0069] Figure 2 This is a schematic diagram of the structure of an online addition device for arc extinguishing plates according to another embodiment of the present invention;

[0070] Figure 3 This is a schematic diagram showing the placement of the arc-extinguishing plate on the wing plate according to an embodiment of the present invention;

[0071] Figure 4 This is a schematic diagram showing the placement of the arc-extinguishing plate on the web of the T-shaped steel according to an embodiment of the present invention;

[0072] Figure 5 This is a schematic diagram showing the placement of the arc-extinguishing plate on the web of an H-beam according to an embodiment of the present invention.

[0073] Figure 6 This is a schematic diagram of the structure of the flange and web of the T-shaped steel after adding the arc-starting and arc-extinguishing plates according to an embodiment of the present invention.

[0074] Figure 7 This is a schematic diagram of the structure of the H-beam after adding the arc-starting and arc-extinguishing plates and the combination of the flange and web plates according to an embodiment of the present invention.

[0075] Figure 8 This is a flowchart of an online method for adding an arc-extinguishing plate according to an embodiment of the present invention;

[0076] Figure 9 This is a schematic diagram illustrating the principle of an online method for adding an arc-extinguishing plate according to an embodiment of the present invention.

[0077] In the attached drawings, 11-exting arc wing plate adding device, 111-exting arc wing plate, 12-exting arc web plate adding device, 121-exting arc web plate, 13-starting arc wing plate adding device, 131-starting arc wing plate, 14-starting arc web plate adding device, 141-starting arc web plate, 2-conveying roller conveyor, 21-wing plate conveying roller conveyor loading end, 22-wing plate conveying roller conveyor discharge end, 23-web plate conveying roller conveyor loading end, 24-web plate conveying roller conveyor discharge end, 3-web plate turning frame, 4-T-shaped steel turning frame, 5-integrated welding and straightening machine, 6-section steel wing plate, 7-section steel web plate.

[0078] In all the accompanying drawings, the same reference numerals indicate similar or corresponding features or functions. Detailed Implementation

[0079] In response to the aforementioned issue that the integrated welding and straightening machine used in the existing automated production line for steel section welding and straightening lacks the function of automatically adding arc-starting and arc-extinguishing plates, thus failing to achieve automatic online addition of arc-starting and arc-extinguishing plates and resulting in the inability to guarantee the weld quality of steel section, an online addition device and method for arc-starting and arc-extinguishing plates is proposed.

[0080] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0081] To illustrate the online addition device and method for arc extinguishing plates provided by the present invention Figure 1 The structure of an online addition device for arc extinguishing plates according to an embodiment of the present invention is shown; Figure 2The structure of an online addition device for arc extinguishing plates according to another embodiment of the present invention is shown; Figure 3 The placement position of the arc-extinguishing plate on the wing plate according to an embodiment of the present invention is shown; Figure 4 The placement position of the arc-extinguishing plate on the web of the T-shaped steel according to an embodiment of the present invention is shown; Figure 5 The placement position of the arc-extinguishing plate on the web of an H-beam according to an embodiment of the present invention is shown; Figure 6 The structure of the flange and web of the T-shaped steel after adding the arc-starting and arc-extinguishing plates according to an embodiment of the present invention is shown. Figure 7 The structure of the flange and web of an H-beam with the addition of an arc-starting and arc-extinguishing plate, according to an embodiment of the present invention, is shown. Figure 8 The flowchart of an online method for adding an arc extinguishing plate according to an embodiment of the present invention is shown; Figure 9 The principle of an online method for adding an arc-extinguishing plate according to an embodiment of the present invention is illustrated.

[0082] like Figures 1 to 7 As shown in the figure, the online arc-starting and arc-extinguishing plate adding device provided by the present invention is used to automatically add arc-starting and arc-extinguishing plates in an automated production line for welding and straightening of structural steel sections. It includes an incoming material position monitoring device, a central control system, an arc-extinguishing plate adding device, and an arc-starting plate adding device; wherein,

[0083] The incoming material position monitoring device is used to monitor the end position information of the steel plate to be welded reaching the feeding end of the conveying roller 2 and the beginning position information of the steel plate reaching the discharge end of the conveying roller 2 during the process of conveying the steel plate to be welded to the assembly welding and straightening machine 5 through the conveying roller 2.

[0084] The central control system is connected to the roller conveyor control system and the incoming material position monitoring device of the automated production line for welding and straightening of structural steel. Based on the acquired end-position information, it is used to link the roller conveyor control system to control the conveyor roller 2 to pause for the first time and generate an arc-extinguishing plate addition command. Based on the acquired beginning-position information, it is used to link the roller conveyor control system to control the conveyor roller 2 to pause for the second time and generate an arc-starting plate addition command. Based on the acquired information that the arc-extinguishing plate addition device has completed the arc-extinguishing plate addition and the arc-starting plate addition device has completed the arc-starting plate addition, it links the roller conveyor control system again to control the conveyor roller 2 to start.

[0085] The arc-extinguishing plate adding device is connected to the central control system signal and is used to add the arc-extinguishing plate to the end of the steel plate according to the arc-extinguishing plate adding command, and generate arc-extinguishing plate adding information.

[0086] The arc-starting plate adding device is connected to the central control system signal and is used to add the arc-starting plate to the first end of the steel plate according to the arc-starting plate adding instruction, and generate the arc-starting plate adding information.

[0087] The incoming material position monitoring device can be implemented using existing visual monitoring technologies, such as image acquisition and processing technology, or it can be implemented by using laser monitoring combined with the length of the steel plate to monitor the position of its end and beginning. Since the above two position monitoring technologies are mature technologies in the existing technology, this invention will not elaborate on them.

[0088] The position of the steel plate to be welded conveyed on conveyor roller 2 is monitored by the incoming material position monitoring device. When the end of the steel plate reaches the loading end of the conveyor roller, the material position monitoring device sends the generated end-position information to the central control system. The central control system, in conjunction with the roller control system, controls the conveyor roller to pause and generates an arc-extinguishing plate addition command. The arc-extinguishing plate addition device at the loading end is then controlled to add the arc-extinguishing plate to the end of the steel plate. Based on the arc-extinguishing plate addition completion information obtained from the arc-extinguishing plate addition device, the central control system again in conjunction with the roller control system to start conveyor roller 2, allowing the steel plate with the added arc-extinguishing plate to continue forward conveying. When the incoming material position monitoring device detects that the beginning of the steel plate with the added arc-extinguishing plate reaches the discharge end of the conveyor roller, it sends the beginning-position information to the central control system. The control system, linked to the roller conveyor control system, pauses the conveyor roller 2 and generates an arc-starting plate addition command to control the arc-starting plate addition device to add the arc-starting plate to the first end of the steel plate. Based on the arc-starting plate addition information obtained from the arc-starting plate addition device, the central control system again links the roller conveyor control system to start the conveyor roller 2, continuing to convey the steel plate with added arc-starting and arc-extinguishing plates. The steel plate is then fed into the integrated welding and straightening machine 5 after being combined with the web and wing plates with added arc-starting and arc-extinguishing plates on the automated steel welding and straightening production line, completing the steel welding. This fills the gap in the existing T / H steel welding and straightening integrated machine which lacks automatic addition of arc-starting and arc-extinguishing plates. It can adapt to various situations in steel structure production where the wing plates and web plates are aligned or misaligned, ensuring the weld quality of the steel.

[0089] As a preferred embodiment of the present invention, the arc extinguishing plate adding device includes an arc extinguishing wing plate adding device 11 disposed at the loading end 21 of the wing plate conveying roller and an arc extinguishing web plate adding device 12 disposed at the loading end 23 of the web plate conveying roller.

[0090] Specifically, in the existing technology, the conveyor roller 2 of the automated production line for welding and straightening of structural steel includes a wing plate conveyor roller and a web plate conveyor roller. The plates (steel plates) conveyed by the wing plate conveyor roller and the web plate conveyor roller are conveyed simultaneously. Then, the structural steel web plate 7 (or the T-shaped steel after combination welding) is flipped onto the structural steel wing plate 6 by a flipping frame. After combination, they are sent together into the integrated welding and straightening machine 5 for welding.

[0091] The online addition device for arc-initiating and arc-extinguishing plates provided by this invention can be used for adding arc-initiating and arc-extinguishing plates for both T-shaped and H-shaped steel sections. The number of flanges 6 varies depending on the type of steel section (T-shaped and H-shaped), and therefore the number of flange conveyor rollers also varies.

[0092] like Figure 2 As shown, for T-shaped steel, there is one wing plate conveying roller and one web plate conveying roller. After the web plate 7 of the steel section is equipped with arc-inducing and arc-extinguishing plates, it is flipped onto the wing plate conveying roller by the web plate flipping frame 3. After being combined with the wing plate 6 of the steel section with arc-inducing and arc-extinguishing plates, it is sent into the welding and straightening integrated machine 5 for welding to form T-shaped steel.

[0093] like Figure 1 As shown, for H-beams, there are two wing plate conveying rollers and one web plate conveying roller. After the web plate 7 of the steel section is fitted with arc-inducing and arc-extinguishing plates, it is flipped onto the first wing plate conveying roller by the web plate flipping frame 3. After being combined with the first wing plate 6 of the steel section with arc-inducing and arc-extinguishing plates, it is sent into the first welding and straightening machine 5 for welding to form a T-beam. The T-beam is then flipped onto the second wing plate conveying roller by the T-beam flipping frame 4. After being combined with the second wing plate 6 of the steel section with arc-inducing and arc-extinguishing plates, it is sent into the second welding and straightening machine 5 for welding.

[0094] As a preferred embodiment of the present invention, the arc extinguishing wing plate adding device 11 includes an arc extinguishing wing plate assembly robot and an arc extinguishing wing plate spot welding robot that is signal-connected to the arc extinguishing wing plate assembly robot.

[0095] The arc-extinguishing wingplate assembly robot includes an end-effector wingplate thickness detection module, an arc-extinguishing wingplate thickness determination module connected to the end-effector wingplate thickness detection module, and an arc-extinguishing wingplate execution module connected to the arc-extinguishing wingplate thickness determination module.

[0096] The end flange thickness detection module is used to obtain the thickness data of the first flange at the end of the steel section.

[0097] The arc-extinguishing wing plate thickness determination module is used to determine the arc-extinguishing wing plate thickness based on the first wing plate thickness data and a preset arc-extinguishing wing plate selection rule.

[0098] The arc extinguishing wing plate execution module is used to grab the arc extinguishing wing plate from the corresponding preset arc extinguishing wing plate material box according to the thickness of the arc extinguishing wing plate, and position and assemble it at the end of the steel wing plate according to the preset arc extinguishing wing plate placement rules, and generate arc extinguishing wing plate assembly completion information.

[0099] The arc-extinguishing wing plate spot welding robot is used to spot weld and fix the ends of the arc-extinguishing wing plate and the steel wing plate according to the arc-extinguishing wing plate assembly completion information, and generate the arc-extinguishing wing plate addition information.

[0100] The arc-extinguishing web plate adding device 12 includes an arc-extinguishing web plate assembly robot and an arc-extinguishing web plate spot welding robot that is signal-connected to the arc-extinguishing web plate assembly robot.

[0101] The arc-extinguishing web assembly robot includes an end-effector web thickness detection module, an arc-extinguishing web thickness determination module connected to the end-effector web thickness detection module, and an arc-extinguishing web execution module connected to the arc-extinguishing web thickness determination module; wherein...

[0102] The end web thickness detection module is used to obtain the thickness data of the first web at the end of the steel section.

[0103] The arc-extinguishing web thickness determination module is used to determine the arc-extinguishing web thickness based on the first web thickness data and a preset arc-extinguishing web selection rule.

[0104] The arc-extinguishing web plate execution module is used to grab the arc-extinguishing web plate from the corresponding preset arc-extinguishing web plate material box according to the thickness of the arc-extinguishing web plate, and position and assemble it at the end of the steel web plate according to the preset arc-extinguishing web plate placement rules, and generate arc-extinguishing web plate assembly completion information.

[0105] The arc-extinguishing web plate spot welding robot is used to spot weld and fix the ends of the arc-extinguishing web plate and the steel web plate according to the arc-extinguishing web plate assembly completion information, and generate the arc-extinguishing web plate addition information.

[0106] Specifically, along the conveying direction of the conveying pipe 2 (wing plate conveying roller and web plate conveying roller), an arc extinguishing plate adding workstation (arc extinguishing wing plate adding workstation and arc extinguishing web plate adding workstation) is set at the feeding end of the conveying pipe 2. The arc extinguishing plate adding workstation is equipped with an arc extinguishing plate adding device (arc extinguishing wing plate adding device 11 and arc extinguishing web plate adding device 12), which is used to add arc extinguishing plates according to the arc extinguishing plate adding command issued by the execution central control system, and the addition of arc extinguishing wing plate 111 and arc extinguishing web plate 121 is carried out synchronously.

[0107] As a preferred embodiment of the present invention, the preset rule for selecting the arc-extinguishing wing plate is as follows:

[0108] When the thickness of the steel wing plate 6 is 10-20mm, the thickness of the arc extinguishing wing plate 111 is set to 10mm;

[0109] When the thickness of the steel wing plate 6 is 22-30mm, the thickness of the arc extinguishing wing plate 111 is set to 22mm;

[0110] When the thickness of the steel wing plate 6 is 32-40mm, the thickness of the arc extinguishing wing plate 111 is set to 32mm;

[0111] The preset rules for selecting the arc-extinguishing web are as follows:

[0112] The thickness of the arc-extinguishing web 121 is the same as the thickness of the steel web 7.

[0113] Specifically, the arc-extinguishing wing plate 111 is stored in a corresponding hopper. Based on practical experience, the hopper for the arc-extinguishing wing plate 111 is preferably, but not limited to, three sets, and the hopper for the arc-extinguishing web plate 121 is preferably, but not limited to, eight sets. When the thickness of the steel wing plate 6 is 10-20mm, the thickness of the arc-extinguishing wing plate 111 is 10mm; when the thickness of the steel wing plate 6 is 22-30mm, the thickness of the arc-extinguishing wing plate 111 is 22mm; when the thickness of the steel wing plate 6 is 32-40mm, the thickness of the arc-extinguishing wing plate 111 is 32mm. The arc-extinguishing web plate 121 has the same thickness as the steel web plate 7, therefore, it can be preferably, but not limited to, eight sets according to the type of T / H steel web plate in the production line: 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm.

[0114] As a preferred embodiment of the present invention, the pre-defined placement rule for the arc-extinguishing wingplate is as follows:

[0115] The arc-extinguishing wing plate 111 is placed at the end of the centerline in the width direction of the steel wing plate 6 and is flush with the upper surface of the steel wing plate 6;

[0116] The preset arc-extinguishing web placement rules are as follows:

[0117] The arc-extinguishing web 121 is placed on the side of the end of the steel web 7 in the width direction and is flush with the thickness surface of the steel web 7.

[0118] Specifically, such as Figures 3 to 5 As shown, the number of arc-extinguishing flanges 111 at the ends of the flanges of T-beams and H-beams is the same. The number of arc-extinguishing webs 121 of T-beams is one, and the number of arc-extinguishing webs 121 of H-beams is two.

[0119] As a preferred embodiment of the present invention, the arc-initiating plate adding device includes an arc-initiating wing plate adding device 13 disposed at the discharge end 22 of the wing plate conveying roller table and an arc-initiating web plate adding device 14 disposed at the discharge end 24 of the web plate conveying roller table.

[0120] As a preferred embodiment of the present invention, the arc-initiating wing plate adding device 13 includes an arc-initiating wing plate assembly robot and an arc-initiating wing plate spot welding robot that is signal-connected to the arc-initiating wing plate assembly robot.

[0121] The arc-initiating wingplate assembly robot includes a front wingplate thickness detection module, an arc-initiating wingplate thickness determination module connected to the front wingplate thickness detection module, and an arc-initiating wingplate execution module connected to the arc-initiating wingplate thickness determination module.

[0122] The first end flange thickness detection module is used to obtain the thickness data of the second flange at the first end of the steel section.

[0123] The arc-initiating wing plate thickness determination module is used to determine the arc-initiating wing plate thickness based on the second wing plate thickness data and a preset arc-initiating wing plate selection rule.

[0124] The arc-initiating wing plate execution module is used to grab the arc-initiating wing plate from the corresponding preset arc-initiating wing plate material box according to the thickness of the arc-initiating wing plate, and position and assemble it at the head end of the steel wing plate according to the preset arc-initiating wing plate placement rules, and generate arc-initiating wing plate assembly completion information.

[0125] The arc-starting wing plate spot welding robot is used to spot weld and fix the front end of the arc-starting wing plate and the steel wing plate according to the arc-starting wing plate assembly completion information, and generate the arc-starting wing plate addition information.

[0126] The arc-starting web plate adding device includes an arc-starting web plate assembly robot and an arc-starting web plate spot welding robot that is connected to the arc-starting web plate assembly robot by signals;

[0127] The arc-initiating web assembly robot includes a front-end web thickness detection module, an arc-initiating web thickness determination module connected to the front-end web thickness detection module, and an arc-initiating web execution module connected to the arc-initiating web thickness determination module; wherein...

[0128] The first-end web thickness detection module is used to obtain the second web thickness data at the first end of the steel section.

[0129] The arc-starting web thickness determination module is used to determine the arc-starting web thickness based on the second web thickness data and a preset arc-starting web selection rule.

[0130] The arc-starting web plate execution module is used to grab the arc-starting web plate from the corresponding preset arc-starting web plate material box according to the thickness of the arc-starting web plate, and position and assemble it at the first end of the steel web plate according to the preset arc-starting web plate placement rules, and generate arc-starting web plate assembly completion information.

[0131] The arc-starting web spot welding robot is used to spot weld and fix the first end of the arc-starting web and the section steel web according to the arc-starting web assembly completion information, and generate the arc-starting web addition information.

[0132] Specifically, along the conveying direction of the conveying pipe 2 (wing plate conveying roller and web plate conveying roller), an arc-inducing plate adding workstation (arc-inducing wing plate adding workstation and arc-inducing web plate adding workstation) is set at the discharge end of the conveying pipe 2. The arc-inducing plate adding workstation is equipped with an arc-inducing plate adding device (arc-inducing wing plate adding device 13 and arc-inducing web plate adding device 14), which is used to add arc-inducing plates according to the arc-inducing plate adding command issued by the execution central control system, and the addition of arc-inducing wing plate 131 and arc-inducing web plate 141 is carried out synchronously.

[0133] As a preferred embodiment of the present invention, the preset arc-initiating wing plate selection rule is as follows:

[0134] When the thickness of the steel wing plate 6 is 10-20mm, the thickness of the arc-inducing wing plate 131 is set to 10mm;

[0135] When the thickness of the steel wing plate 6 is 22-30mm, the thickness of the arc-inducing wing plate 131 is set to 22mm;

[0136] When the thickness of the steel wing plate 6 is 32-40mm, the thickness of the arc-inducing wing plate 131 is set to 32mm.

[0137] The preset rules for selecting the arc-starting web are as follows:

[0138] The thickness of the arc-initiating web 141 is the same as the thickness of the steel web 7.

[0139] As a preferred embodiment of the present invention, the pre-defined arc-initiating wing plate placement rule is as follows:

[0140] The arc-inducing wing plate 131 is placed at the beginning of the centerline in the width direction of the steel wing plate 6 and is flush with the upper plane of the steel wing plate 6.

[0141] The pre-defined rules for placing the arc-starting web are as follows:

[0142] The arc-inducing web 141 is placed on the side of the first end of the steel web 7 in the width direction and is flush with the thickness surface of the steel web 7.

[0143] like Figure 8 and Figure 9 As shown, the online addition method for arc-initiating and arc-extinguishing plates provided by the present invention uses the online addition device for arc-initiating and arc-extinguishing plates described above to automatically add arc-initiating and arc-extinguishing plates to both ends of the steel profile to be welded in the roller conveyor section of the automated production line for steel profile welding and straightening, including the following steps:

[0144] Step S1: Obtain the end position information of the steel plate to be welded at the feeding end of the conveyor roller through the material position monitoring device;

[0145] Step S2: Based on the end-point arrival information, the central control system links with the roller control system of the automated production line for welding and straightening of structural steel to control the conveyor roller 2 to pause for the first time and generate an arc-extinguishing plate addition command.

[0146] Step S3: The arc extinguishing plate adding device adds the arc extinguishing plate to the end of the steel plate according to the arc extinguishing plate adding instruction, and generates the arc extinguishing plate adding information.

[0147] Step S4: Based on the information indicating the completion of adding the arc-extinguishing plate, the central control system, in conjunction with the roller control system, controls the start of the conveyor roller 2 so that the conveyor roller 2 continues to convey the steel plate with the added arc-extinguishing plate.

[0148] Step S5: The incoming material position monitoring device obtains the information on the first end of the steel plate with added extinguishing plate arriving at the discharge end of the conveyor roller 2.

[0149] Step S6: Based on the first end positioning information, the central control system works in conjunction with the roller conveyor control system to control the conveyor roller conveyor 2 to pause for the second time and generate an arc-initiating plate addition command.

[0150] Step S7: The arc-starting plate adding device adds the arc-starting plate to the first end of the steel plate to which the arc-extinguishing plate is added, according to the arc-starting plate adding instruction, and generates the arc-starting plate adding information.

[0151] Step S8: Based on the information on the completion of adding the arc-starting plate, the central control system, in conjunction with the roller control system, controls the start of the conveyor roller 2 to send the steel plate with added arc-starting and arc-extinguishing plates into the integrated welding and straightening machine 5 of the automated steel welding and straightening production line, thereby completing the automatic addition of arc-starting and arc-extinguishing plates at both ends of the steel plate to be welded in the roller conveyor section of the automated steel welding and straightening production line.

[0152] As can be seen from the above specific embodiments, the online addition device and method for arc-extinguishing plates provided by the present invention monitors the position of the steel plate to be welded conveyed on the conveyor roller conveyor through the incoming material position monitoring device. When the end of the steel plate reaches the loading end of the conveyor roller conveyor, the material position monitoring device sends the generated end-position information to the central control system. The central control system, in conjunction with the roller conveyor control system, controls the conveyor roller conveyor to pause and generates an arc-extinguishing plate addition command. It controls the arc-extinguishing plate addition device set at the loading end to add the arc-extinguishing plate to the end of the steel plate. Based on the arc-extinguishing plate addition completion information obtained from the arc-extinguishing plate addition device, the central control system again in conjunction with the roller conveyor control system to control the conveyor roller conveyor to start, so as to continue to convey the steel plate with the added arc-extinguishing plate forward. When the incoming material position monitoring device detects that the beginning of the steel plate with the added arc-extinguishing plate reaches the discharge end of the conveyor roller conveyor, the arc-extinguishing plate is added. When the first end is in position, the information is sent to the central control system. The central control system then links with the roller conveyor control system to pause the conveyor rollers and generates an arc-starting plate addition command to control the arc-starting plate addition device to add the arc-starting plate to the first end of the steel section. Based on the information obtained from the arc-starting plate addition device indicating that the arc-starting plate addition is complete, the central control system again links with the roller conveyor control system to start the conveyor rollers, continuing to convey the steel section with the added arc-starting and arc-extinguishing plates. The steel section is then fed into the integrated welding and straightening machine after the web and wing plates with the added arc-starting and arc-extinguishing plates are combined on the automated steel section welding and straightening production line via a flipping frame. This completes the steel section welding, filling the gap in the existing T / H steel section welding and straightening integrated machine which lacks automatic addition of arc-starting and arc-extinguishing plates. It can adapt to various situations in steel structure production where the wing plates and web plates are aligned or misaligned, ensuring the weld quality of the steel section.

[0153] The online addition device and method for arc extinguishing plates according to the present invention have been described above by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various modifications can be made to the online addition device and method for arc extinguishing plates according to the present invention without departing from the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the content of the appended claims.

Claims

1. An arc quenching plate on-line addition device characterized by, The application relates to an automatic adding device for arc striking plates and arc extinguishing plates in a profile steel group welding and straightening automatic production line. The incoming position monitoring device is used to monitor the end-to-position information of the profile steel plate end reaching the feeding end of the conveying roller way and the head-to-position information of the profile steel plate head reaching the discharging end of the conveying roller way during the conveying of the profile steel plate to the group welding and straightening integrated machine by the conveying roller way. The central control system is signal-connected with the roller way control system of the profile steel group welding and straightening automatic production line and the incoming position monitoring device, and is used to control the conveying roller way to pause for the first time and generate an arc extinguishing plate adding instruction according to the acquired end-to-position information; and control the conveying roller way to pause for the second time and generate an arc striking plate adding instruction according to the acquired head-to-position information, and control the conveying roller way to start again according to the arc extinguishing plate adding information and the arc striking plate adding information. The arc extinguishing plate adding device is signal-connected with the central control system, and is used to add an arc extinguishing plate to the end of the profile steel plate according to the arc extinguishing plate adding instruction and generate arc extinguishing plate adding completion information. The arc striking plate adding device is signal-connected with the central control system, and is used to add the arc striking plate to the head of the profile steel plate according to the arc striking plate adding instruction and generate arc striking plate adding completion information. The arc extinguishing plate adding device comprises an arc extinguishing wing plate adding device arranged at the feeding end of the wing plate conveying roller way and an arc extinguishing web plate adding device arranged at the feeding end of the web plate conveying roller way. The arc extinguishing wing plate adding device comprises an arc extinguishing wing plate assembling robot and an arc extinguishing wing plate spot welding robot signal-connected with the arc extinguishing wing plate assembling robot. The arc extinguishing wing plate assembling robot comprises an end wing plate thickness detection module, an arc extinguishing wing plate thickness determination module connected with the end wing plate thickness detection module and an arc extinguishing wing plate execution module connected with the arc extinguishing wing plate thickness determination module. The end wing plate thickness detection module is used to acquire first wing plate thickness data of the profile steel end. The arc extinguishing wing plate thickness determination module is used to determine the arc extinguishing wing plate thickness according to the first wing plate thickness data based on a preset arc extinguishing wing plate selection rule. The arc extinguishing wing plate execution module is used to grab the arc extinguishing wing plate from the corresponding preset arc extinguishing wing plate box according to the arc extinguishing wing plate thickness, position the arc extinguishing wing plate at the end of the profile steel wing plate according to a preset arc extinguishing wing plate placement rule, and generate arc extinguishing wing plate assembly completion information. The arc extinguishing wing plate spot welding robot is used to perform spot welding fixation between the arc extinguishing wing plate and the end of the profile steel wing plate according to the arc extinguishing wing plate assembly completion information, and generate arc extinguishing wing plate adding completion information. The arc extinguishing web plate adding device comprises an arc extinguishing web plate assembling robot and an arc extinguishing web plate spot welding robot signal-connected with the arc extinguishing web plate assembling robot. The arc extinguishing web plate assembly robot comprises a terminal web plate thickness detection module, an arc extinguishing web plate thickness determination module connected with the terminal web plate thickness detection module, and an arc extinguishing web plate execution module connected with the arc extinguishing web plate thickness determination module; wherein, The terminal web plate thickness detection module is configured to acquire first web plate thickness data of a terminal end of a profile steel. The arc extinguishing web plate thickness determination module is configured to determine an arc extinguishing web plate thickness according to the first web plate thickness data and based on a preset arc extinguishing web plate selection rule. The arc extinguishing web plate execution module is configured to grab an arc extinguishing web plate from a corresponding preset arc extinguishing web plate magazine according to the arc extinguishing web plate thickness, and position and assemble the arc extinguishing web plate at a terminal end of a profile steel web plate according to a preset arc extinguishing web plate placement rule, to generate arc extinguishing web plate assembly completion information. The arc extinguishing web plate spot welding robot is configured to perform spot welding fixation between the arc extinguishing web plate and the terminal end of the profile steel web plate according to the arc extinguishing web plate assembly completion information, and generate completed arc extinguishing web plate addition information.

2. The arc extinguishing plate online adding device according to claim 1, wherein The preset arc extinguishing wing plate selection rule is that: when the profile steel wing plate thickness is 10-20 mm, the thickness of the arc extinguishing wing plate is set to 10 mm; when the profile steel wing plate thickness is 22-30 mm, the thickness of the arc extinguishing wing plate is set to 22 mm; when the profile steel wing plate thickness is 32-40 mm, the thickness of the arc extinguishing wing plate is set to 32 mm. The preset arc extinguishing web plate selection rule is that: the thickness of the arc extinguishing web plate is the same as the thickness of the profile steel web plate.

3. The arc extinguishing plate online adding device according to claim 1, wherein The preset arc extinguishing wing plate placement rule is that: the arc extinguishing wing plate is placed at a terminal end position of a center line in the width direction of the profile steel wing plate, and is flush with the upper surface of the profile steel wing plate; The preset arc extinguishing web plate placement rule is that: the arc extinguishing web plate is placed at a side portion in the width direction of the terminal end of the profile steel web plate, and is flush with the thickness surface of the profile steel web plate.

4. The arc extinguishing plate online adding device according to claim 1, wherein The arc extinguishing plate adding device comprises an arc wing plate adding device arranged at the discharge end of the wing plate conveying roller way and an arc web plate adding device arranged at the discharge end of the web plate conveying roller way.

5. The arc extinguishing plate online adding device according to claim 4, wherein The arc wing plate adding device comprises an arc wing plate assembly robot and an arc wing plate spot welding robot in signal connection with the arc wing plate assembly robot. The arc wing plate assembly robot comprises a terminal wing plate thickness detection module, an arc wing plate thickness determination module connected with the terminal wing plate thickness detection module, and an arc wing plate execution module connected with the arc wing plate thickness determination module. The terminal wing plate thickness detection module is configured to acquire second wing plate thickness data of a terminal end of a profile steel. The arc wing plate thickness determination module is configured to determine an arc wing plate thickness according to the second wing plate thickness data and based on a preset arc wing plate selection rule. The arc wing plate execution module is configured to grab an arc wing plate from a corresponding preset arc wing plate magazine according to the arc wing plate thickness, and position and assemble the arc wing plate at a terminal end of a profile steel wing plate according to a preset arc wing plate placement rule, to generate arc wing plate assembly completion information. The arc striking wing plate execution module is configured to grab the arc striking wing plate from a corresponding preset arc striking wing plate material box according to the arc striking wing plate thickness, and position and assemble the arc striking wing plate at the first end of the profile steel wing plate according to a preset arc striking wing plate placement rule, to generate arc striking wing plate assembly completion information. The arc striking wing plate spot welding robot is configured to perform spot welding fixation between the arc striking wing plate and the first end of the profile steel wing plate according to the arc striking wing plate assembly completion information, and generate completed arc striking wing plate addition information. The arc striking web plate adding device comprises an arc striking web plate assembly robot and an arc striking web plate spot welding robot in signal connection with the arc striking web plate assembly robot. The arc striking web plate assembly robot comprises a first-end web plate thickness detection module, an arc striking web plate thickness determination module in connection with the first-end web plate thickness detection module, and an arc striking web plate execution module in connection with the arc striking web plate thickness determination module; wherein The first-end web plate thickness detection module is configured to acquire second web plate thickness data of the first end of the profile steel. The arc striking web plate thickness determination module is configured to determine the arc striking web plate thickness according to the second web plate thickness data based on a preset arc striking web plate selection rule. The arc striking web plate execution module is configured to grab the arc striking web plate from a corresponding preset arc striking web plate material box according to the arc striking web plate thickness, and position and assemble the arc striking web plate at the first end of the profile steel web plate according to a preset arc striking web plate placement rule, to generate arc striking web plate assembly completion information. The arc striking web plate spot welding robot is configured to perform spot welding fixation between the arc striking web plate and the first end of the profile steel web plate according to the arc striking web plate assembly completion information, and generate completed arc striking web plate addition information.

6. The arc striking and extinguishing plate online adding device according to claim 5, wherein The preset arc striking wing plate selection rule is that: when the profile steel wing plate thickness is 10-20 mm, the thickness of the arc striking wing plate is set to 10 mm; when the profile steel wing plate thickness is 22-30 mm, the thickness of the arc striking wing plate is set to 22 mm; when the profile steel wing plate thickness is 32-40 mm, the thickness of the arc striking wing plate is set to 32 mm. The preset arc striking web plate selection rule is that: the thickness of the arc striking web plate is the same as the thickness of the profile steel web plate.

7. The arc striking and extinguishing plate online adding device according to claim 5, wherein The preset arc striking wing plate placement rule is that: the arc striking wing plate is placed at the first end of the center line in the width direction of the profile steel wing plate, and is flush with the upper plane of the profile steel wing plate; The preset arc striking web plate placement rule is that: the arc striking web plate is placed at the side of the first end in the width direction of the profile steel web plate, and is flush with the thickness plane of the profile steel web plate.

8. An arc quenching plate on-line addition method characterized by, The arc striking and extinguishing plate online adding device according to any one of claims 1-7 is used to automatically add the arc striking plate and the arc extinguishing plate to the two ends of the profile steel plate to be welded in the roller conveying section of the profile steel assembly and welding and straightening automatic production line, comprising the following steps: The end-in-place information of the end of the profile steel plate to be welded reaching the feeding end of the conveying roller is acquired through the incoming material position monitoring device. The arc striking and extinguishing plate online adding device according to any one of claims 1-7 is used to automatically add the arc striking plate and the arc extinguishing plate to the two ends of the profile steel plate to be welded in the roller conveying section of the profile steel assembly and welding and straightening automatic production line, comprising the following steps: The end-in-place information of the end of the profile steel plate to be welded reaching the feeding end of the conveying roller is acquired through the incoming material position monitoring device. The central control system is linked with a roller control system of the automatic production line of section steel group welding and straightening to control the first pause of the conveying roller and generate an arc extinguishing plate adding instruction according to the end position information. The arc extinguishing plate adding device adds an arc extinguishing plate to the end of the section steel plate according to the arc extinguishing plate adding instruction and generates completed arc extinguishing plate adding information. The central control system is linked with the roller control system to control the start of the conveying roller according to the completed arc extinguishing plate adding information, so that the conveying roller continues to convey the section steel plate with the added arc extinguishing plate. The incoming position monitoring device obtains first end position information of the first end of the section steel plate with the added arc extinguishing plate reaching the outgoing end of the conveying roller. The central control system is linked with the roller control system to control the second pause of the conveying roller according to the first end position information and generate an arc striking plate adding instruction. The arc striking plate adding device adds an arc striking plate to the first end of the section steel plate with the added arc extinguishing plate according to the arc striking plate adding instruction and generates completed arc striking plate adding information. The central control system is linked with the roller control system to control the start of the conveying roller according to the completed arc striking plate adding information, so that the section steel plate with the added arc striking plate and arc extinguishing plate is sent to a group welding and straightening all-in-one machine of the automatic production line of section steel group welding and straightening, and the automatic addition of the arc striking plate and arc extinguishing plate to the ends of the section steel plate to be welded in the roller conveying section of the automatic production line of section steel group welding and straightening is completed.

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