Plane segmented intelligent back burning device and back burning method

Abstract

The planar segmented intelligent back burning device comprises a back burning detection device, a back burning heating device, axial flow fans and an air source box device, the back burning detection device and the back burning heating device are fixedly connected with an embedded part of a pit, and the axial flow fans are located at the left end and the right end of the pit and connected with an air suction pipeline of a workshop. The air source box device is fixed on pre-buried plates at the left end and the right end of a pit, the back burning detection device comprises a portal supporting stand column and a main cross beam, two transverse movement driving mechanisms are symmetrically arranged on the left side and the right side of the main cross beam, the transverse movement driving mechanisms are fixedly provided with lifting detection mechanisms, and the lifting detection mechanisms are provided with laser displacement sensors; the back burning heating device comprises a main body supporting mechanism and a baking gun mechanism; the laser displacement sensor is in communication connection with a baking gun servo motor of the baking gun mechanism; according to the invention, a group of double sets of laser displacement sensors are adopted, the deviation of the whole plane section in the transportation process can be identified, the welding deviation of a single longitudinal bone can also be identified, the precision and the accuracy are high, and the heat treatment effect of sheet body back burning is improved.

Description

Technical Field

[0001] The invention relates to the technical field of hull assembly, and in particular to a plane segmented intelligent back-burning device and a back-burning method. Background Art

[0002] Plane sections are an important carrier for hull assembly. How to efficiently and safely realize the automation of section construction has a profound impact on the assembly cycle, shipbuilding costs and labor intensity of workers.

[0003] The existing back-burning stress relief and anti-deformation processes after flat section welding are mostly completed by manual labor, which not only has high labor intensity and a bad working environment, but also has extremely poor efficiency and effect of heat treatment, which seriously hinders the construction progress of large flat sections in shipyards. At the same time, the working environment and safety of workers cannot be effectively guaranteed.

[0004] The electromagnetic back-burning technology currently under research can only back-burn a local area at a time, and the design and maintenance costs are extremely high. There is currently no mature fire attack automation equipment in China to achieve simultaneous intelligent back-burning of multiple longitudinal bones, for example: The patent with publication number CN117663784A discloses an adaptive electromagnetic induction heating mechanism, back-burning device and method. The device can only realize local back-burning of a single longitudinal bone, and cannot realize back-burning of multiple longitudinal bones at the same time. The back-burning efficiency is low and the market application scope is limited. The device uses a different heating source principle. The patent uses an electromagnetic induction heating mechanism, which has extremely high design and maintenance costs, and the equipment is difficult to operate and occupies a large area. Secondly, the use method of the equipment is limited. It cannot adapt to the back-burning of sheets with extreme planar segments. The back-burning method provided by this patent cannot be used to achieve extremely deformed planar segments. At the same time, the equipment cannot perform back-burning on planar segments of any specifications, any models, and any number of longitudinal bones, and its use scenarios are limited.

[0005] The patent with publication number CN115261593B discloses an intelligent electromagnetic induction back-burning device for shipbuilding and its working method. The equipment can realize local back-burning of a single longitudinal bone, but cannot realize simultaneous back-burning of multiple longitudinal bones. The back-burning efficiency is low and the market application scope is limited. Secondly, the heating source principle used in the equipment is different. It uses an electromagnetic induction heating mechanism, which has extremely high design and maintenance costs. The equipment is difficult to operate and occupies a large area. Finally, the use method of the equipment in the patent is limited, and it cannot adapt to the back-burning of sheets with extreme planar segments. For planar segments with extremely large deformation, it cannot be achieved through the back-burning method provided by this patent.

[0006] The patent with publication number CN219336493U discloses an automatic pyrotechnic back-burning device, which can realize local back-burning of a single longitudinal bone, but cannot realize simultaneous back-burning of multiple longitudinal bones. The back-burning efficiency is low and the market application scope is limited. Secondly, the equipment is only suitable for products with smaller overall deformation of longitudinal bones and plane segments, and cannot realize plane segments with larger deformation in shipyards; the equipment has no position inquiry and real-time positioning functions, cannot effectively track the position of the longitudinal bones, and the back-burning effect is not ideal; the equipment does not have any protection measures for gas concentration detection and flame heat radiation, and cannot guarantee the safety of the equipment and working environment.

[0007] Therefore, it is necessary to provide an intelligent back-burning device which is easy to operate, has a high safety factor and back-burning efficiency, and can well improve the thermal deformation of the planar segmented sheet. Summary of the invention

[0008] The purpose of the present invention is to provide a planar segmented intelligent back-firing device, which is easy to control, has high back-firing efficiency, and can well improve the thermal deformation of the planar segmented sheet.

[0009] In order to achieve the above object, the technical solution of the present invention is: A plane segmented intelligent back-burning device, characterized in that it comprises a back-burning detection device, a back-burning heating device, an axial flow fan and an air source box device, wherein the back-burning detection device and the back-burning heating device are fixedly connected to the embedded parts of the pit, the axial flow fan is located at the left and right ends of the pit and connected to the air suction duct of the workshop, and the air source box device is fixed to the embedded plates at the left and right ends of the pit; The back-burn detection device comprises two gantry support columns and a main beam, wherein the main beam spans the two gantry support columns in the left-right direction, and two transverse drive mechanisms are symmetrically arranged on one side of the main beam, and a lifting detection mechanism is fixedly arranged on the side of the transverse drive mechanism. The transverse drive mechanism and the main beam are driven by gear rack meshing to drive the lifting detection mechanism to move left and right along the main beam. The lifting detection mechanism includes a main mounting plate, an adapter fixing plate, a telescopic connecting rod mounting pad and a laser displacement adapter plate. The main mounting plate is arranged vertically and fixedly connected to the transverse driving mechanism. The adapter fixing plate is vertically fixed to the upper end of the main mounting plate. The upper end of the telescopic connecting rod is fixedly connected to the adapter fixing plate. The mounting pad is vertically fixed to the lower end of the main mounting plate. The lower part of the telescopic connecting rod vertically penetrates the mounting pad. The laser displacement adapter plate is fixed to the lower end of the telescopic connecting rod. The telescopic connecting rod is driven to extend and retract up and down by a single-axis driving mechanism to drive the laser displacement adapter plate to rise and fall. The laser displacement adapter plate is arranged along the front-to-back direction. Laser displacement sensors are provided at the front and rear ends of the laser displacement adapter plate. An infrared displacement adapter plate is fixedly provided in the middle part of the laser displacement adapter plate along the vertical direction. The infrared displacement adapter plate is provided with an infrared displacement sensor. The back-burning heating device comprises a main body support mechanism and a baking gun mechanism, wherein the main body support mechanism is arranged between two gantry support columns along the left-right direction, a baking gun driving mechanism is arranged at the front end of the baking gun mechanism, the baking gun mechanism and the baking gun driving mechanism are movably connected through a cylinder lifting mechanism, a baking gun servo motor is built in the baking gun driving mechanism, the laser displacement sensor is communicatively connected with the baking gun servo motor, the baking gun driving mechanism and the rear side of the main body support mechanism are meshed and driven by gear racks to drive the baking gun mechanism to move left and right along the main body support mechanism, The roasting gun mechanism includes a flame gun fixing plate, a flame gun extension rod and a flame gun connecting plate which are connected as a whole from front to back. A flame gun support rod is vertically arranged at the lower end of the flame gun extension rod, a roller is arranged at the bottom end of the flame gun support rod, and a flame gun assembly is installed on the rear side of the flame gun connecting plate.

[0010] Furthermore, the transverse driving mechanism includes a driving main board, one side of which is fixedly connected to the main mounting plate, and the other side of which is penetrated by a servo motor and a reducer from front to back, and the output end of the reducer is provided with a driving gear, and the driving gear is meshed with the rack of the main beam for transmission.

[0011] Furthermore, a reducer mounting plate is fixedly provided on the other side of the driving main board, the reducer and the reducer mounting plate are fixedly connected by bolts, the driving main board is provided with an inverted L-shaped pressure block, the pressure block is fixedly connected to the driving main board by bolts, and the pressure block cooperates with the driving main board to clamp the left and right sides of the reducer mounting plate.

[0012] Furthermore, a reducer support block is fixedly provided on the outer side of the driving main board, and the reducer support block is located below the reducer mounting plate. A tightening screw is vertically penetrated through the reducer support block, and the tightening screw is threadedly connected to the reducer support block. A butterfly spring is fixedly provided on the lower end of the reducer mounting plate, and the upper end of the tightening screw cooperates with the lower end of the butterfly spring for tightening.

[0013] Furthermore, the main beam includes a beam body, a linear guide rail and a driving rack, the driving rack is located on the upper part of the linear guide rail, the driving gear is meshed with the driving rack, and a slider that cooperates with the linear guide rail is provided on the inner side of the driving main board.

[0014] Furthermore, an anti-collision block is provided on the other side of the driving main board, and the anti-collision block is located on the adjacent sides of the left and right transverse driving mechanisms.

[0015] Furthermore, a limit mounting seat is provided on one side of the driving main board, and a limit switch is fixed on the limit mounting seat by bolts.

[0016] Furthermore, a combustible gas concentration alarm is fixedly connected to the baking gun mechanism via bolts.

[0017] Furthermore, a supporting plate is provided at the bottom of the flame gun assembly, and a ceramic heat insulation plate is fixedly connected to the lower end of the supporting plate by bolts.

[0018] The back-burning method using the planar segmented intelligent back-burning device is characterized by comprising the following steps: Step S1) After the longitudinal bones of the segmented sheets are welded, they are transported to the starting position of the back-firing station by a transport trolley and wait for the next operation; Step S2) The lifting detection mechanisms on the left and right sides of the back-burn detection device start to find the position, and the lateral driving mechanism in the left and right directions and the telescopic connecting rod in the up and down directions work simultaneously. The relative position of the first longitudinal bone at the two ends relative to the set zero point is determined by the laser displacement sensor, and the positions of the longitudinal bones on the remaining segmented sheets are calculated and the position distance is fed back to the roasting gun driving mechanism; Step S3) The gun driving mechanism drives the gun mechanism to work continuously, and the plane continues to move forward in sections. After the positioning is completed, the cylinder lifting mechanism of the back-burning heating device is lifted to ensure that the roller is in contact with the lower surface of the sheet; Step S4) the flame gun assembly is ignited, the heating system starts to work, and the axial flow fan starts to work continuously; Step S5) The laser displacement sensor continuously tracks the position of the first longitudinal bone, and feeds back the offset of the horizontal position to the servo motor of the baking gun through conversion calculation; Step S6) the torch driving mechanism continuously adjusts the position of the torch mechanism according to the offset feedback from the laser displacement sensor, so that the longitudinal bone weld is always between the two flame gun assemblies; Step S7) After the back-burning of the segmented sheet is completed, the segmented sheet is transported to the next station, and the back-burning detection device and the back-burning heating device are reset to zero, waiting for the back-burning operation of the next sheet.

[0019] The back-burn detection device of the present invention adopts a set of two sets of laser displacement sensors, which can not only identify the displacement of the plane segment as a whole during transportation, but also identify the self-welding displacement of a single longitudinal bone, with high precision and accuracy, and improve the heat treatment effect of the back-burn of the sheet body; The left and right double sets of displacement sensor detection mechanisms can simultaneously identify the first longitudinal bones at both ends of the plane segment, and can avoid measurement errors caused by unilateral longitudinal bone jumps while continuously tracking and positioning. The overall longitudinal bone spacing detected at both ends can also be compared and verified with the theoretical value, and the cumulative welding error of multiple longitudinal bones on the segment can be calculated to improve the derivation error of the longitudinal bone spacing, thereby improving the heat treatment effect of the back-burning of the sheet.

[0020] The back-burn detection device of the present invention has a large span and can meet the back-burn operations of all segmented sheets with a width within 22M. It has strong applicability. The lifting detection mechanism in the back-burn detection device is equipped with a vertical infrared displacement detector, which not only plays the protection function of the double sets of laser displacement sensors in the initial longitudinal bone inquiry, but also plays the positioning function in the height direction, thereby improving the detection accuracy of the longitudinal bone position.

[0021] The cylinder lifting mechanism in the back-burning heating device of the present invention drives the roller supporting mechanism in the welding gun mechanism to keep in contact with the lower plane of the planar segment, which can solve the risk of large position deviation of the torch when the planar segment is severely deformed, protect the flame gun, and ensure the efficiency of heat treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an isometric schematic diagram of the present invention as a whole; Figure 2 It is a front view schematic diagram of the back burning detection device of the present invention; Figure 3 It is a front view schematic diagram of the lifting detection mechanism of the present invention; Figure 4 It is a front view schematic diagram of the main gantry driving mechanism of the present invention; Figure 5 It is a schematic side view of the main gantry driving mechanism of the present invention; Figure 6 This is a schematic diagram of the main crossbeam of the present invention; Figure 7 It is a schematic side view of the main cross beam of the present invention; Figure 8 It is a front view schematic diagram of the back-firing heating device of the present invention; Fig. 9 It is a side view schematic diagram of the back-firing heating device of the present invention; Fig.10 It is a schematic diagram of the front view of the roasting gun mechanism of the present invention; Fig.11 It is an isometric schematic diagram of the roasting gun mechanism of the present invention.

[0023] Reference numerals: 1 Back-burn detection device, 2 Back-burn heating device, 3 Axial flow fan, 4 Air source box device, 11 adjustable support feet, 12 gantry support columns, 13 lifting detection mechanism, 14 main gantry drive mechanism, 15 main beam, 16 drag chain connecting rod, 17 diagonal brace, 1301 main mounting plate, 1302 adapter fixing plate, 1303 telescopic connecting rod, 1304 linear bearing, 1305 mounting pad, 1306 laser displacement adapter plate, 1307 mounting protective cover, 1308 laser displacement sensor, 1309 infrared displacement adapter plate, 1310 infrared displacement sensor, 1311 single-axis drive mechanism, 1312 drag chain, 1401 drive main board, 1402 reducer mounting plate, 1403 pressure block, 1404 support block, 1405 plastic anti-collision block, 1406 limit mounting seat, 1407 limit switch, 1408 servo motor, 1409 reduction motor, 1410 driving gear, 1411 butterfly spring, 1412 tightening screw, 1501 beam body, 1502 linear guide rail, 1503 drive rack, 1504 metal sensor sheet, 1505 anti-collision block, 1506 guide rail protection slot, 1507 drag chain slot, 21 main body support mechanism, 22 baking gun mechanism, 23 baking gun driving mechanism, 24 combustible gas concentration alarm, 25 cylinder lifting mechanism, 26 guide rail protection cover, 27 drag chain assembly, 2201 flame gun fixing plate, 2202 flame gun extension rod, 2203 flame gun connecting plate, 2204 flame gun assembly, 2205 support plate, 2206 ceramic insulation board, 2207 roller support mechanism, 2208 fisheye joint, 2209 roller. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The present invention discloses a planar segmented intelligent back-burning device, such as Figure 1As shown, it includes a back-burn detection device 1, a back-burn heating device 2, an axial flow fan 3 and an air source box device 4. The back-burn detection device 1 and the back-burn heating device 2 are both welded and fixed to the embedded parts of the pit. Two axial flow fans 3 are distributed at both ends of the pit and connected to the air suction duct of the workshop. One axial flow fan 3 blows air and the other axial flow fan 3 sucks air to discharge the leaked gas and the heat of the back-burn from the duct. The air source box device 4 is welded to the embedded plate of the pit and is the carrier of the air source supply of the entire heating system.

[0026] like Figure 2 As shown, the back-burn detection device 1 includes an adjustable supporting foot 11, a gantry supporting column 12, a lifting detection mechanism 13, a main gantry driving mechanism 14, a main beam 15, a drag chain connecting rod 16 and a diagonal brace 17. The adjustable supporting foot 11 is composed of a rectangular plate of 30×600×1200mm, 12 M30 studs are welded on the rectangular plate, and the adjustable height range is 80mm. The gantry supporting column 12 is composed of a rectangular hollow square steel of 10×300×500, and 30mm thick rectangular plates are welded on both sides. There are reinforcing ribs around to ensure the stability of the column.

[0027] The adjustable support foot 11 is connected to the gantry support column 12 by bolts, and the lifting detection mechanism 13 is fixed to the main gantry drive mechanism 14 by bolts, and moves left and right on the main beam 15 to find its position. The main gantry drive mechanism 14 and the main beam 15 move in coordination through the meshing of gears and racks.

[0028] The drag chain connecting rod 16 connects the drag chain and is fixed to the main gantry driving mechanism 14 by bolts. The drag chain connecting rod 16 is composed of 12# channel steel, and a reinforcing plate is welded at the vertical position to ensure stability and safety during long-distance drag chain transportation. The diagonal brace 17 is fixed to the gantry support column 12 and the main beam 15 by bolts. The diagonal brace 17 is composed of 8×150×150mm hollow rectangular square steel and has a length of 1000mm. It plays the role of stabilizing the beam and the gantry support column.

[0029] like Figure 3 As shown, the lifting detection mechanism 13 includes a main mounting plate 1301, an adapter fixing plate 1302, a telescopic connecting rod 1303, a linear bearing 1304, a mounting pad 1305, a laser displacement adapter plate 1306, a mounting protective cover 1307, a laser displacement sensor 1308, an infrared displacement adapter plate 1309, an infrared displacement sensor 1310, a single-axis drive mechanism 1311 and a drag chain 1312. The main mounting plate 1301 is composed of a rectangular plate of 16×230×1100mm. A shock-absorbing hole and a threading hole are provided in the middle of the main mounting plate 1301. Through simulation analysis, it can be obtained that the shock-absorbing holes at unequal intervals can release the stress of the main mounting plate 1301 itself, and can play a role in stabilizing and balancing when walking at high speed on the door frame.

[0030] The adapter fixing plate 1302 and the laser displacement adapter plate 1306 are connected to the telescopic connecting rod 1303 through bolts. The telescopic connecting rod 1303 is connected to the mounting pad 1305 through the linear bearing 1304 through bolts. The single-axis driving mechanism 1311 drives the telescopic connecting rod 1303 to extend and retract up and down.

[0031] The mounting pad 1305, the single-axis drive mechanism 1311 and the drag chain 1312 are fixed to the main mounting plate 1301 by bolts, the mounting protection cover 1307 and the infrared displacement adapter plate 1309 are connected to the laser displacement adapter plate 1306 by bolts, the laser displacement sensor 1308 and the infrared displacement sensor 1310 are respectively connected to the mounting protection cover 1307 and the infrared displacement adapter plate 1309 by bolts, and the height distance is adjustable. The design and installation of the infrared displacement sensor 1310 can effectively improve the accuracy of the first longitudinal bone positioning, and can effectively avoid the collision between the lifting detection mechanism and the plane segment.

[0032] The lifting detection mechanism 13 can measure the first longitudinal bone of the plane segment within the deformation of 120mm, which meets the limit deformation of all current shipyards, and can also accurately measure the weld position of the longitudinal bone with a height of 50-800mm.

[0033] like Figure 4 and Figure 5 As shown, the main gantry driving mechanism 14 includes a driving main board 1401, a reducer mounting plate 1402, a pressure block 1403, a support block 1404, a plastic anti-collision block 1405, a limit mounting seat 1406, a limit switch 1407, a servo motor 1408, a reduction motor 1409, a driving gear 1410, a butterfly spring 1411 and a tightening screw 1412, and the reducer mounting plate 1402 is connected to the driving main board 1401 through the pressure block 1403.

[0034] The support block 1404, the plastic anti-collision block 1405 and the limit mounting seat 1406 are connected to the driving main board 1401 by bolts. The plastic anti-collision block 1405 can prevent the two driving mechanisms from directly colliding in the event of an accident. The limit switch 1407 is installed on the limit mounting seat 1406 by bolts to perform the limit and positioning functions. The reduction motor 1409 and the servo motor 1408 are connected by bolts and fixed to the driving main board 1401.

[0035] The driving gear 1410 is connected to the reduction motor 1409 by bolts and meshes with the rack on the main beam 15 of the detection system, serving as the driving carrier of the main gantry driving mechanism 14. The butterfly spring 1411 is in contact with the reducer mounting plate 1402 and connected to the support block 1404. The meshing degree of the driving gear 1410 and the rack of the main beam 15 can be adjusted by adjusting the locking depth of the tightening screw 1412 and the support block 1404. The design of the butterfly spring 1411 can also prevent the risk of tooth jumping between the gear and the rack, thereby preventing emergencies in the main gantry driving mechanism 14.

[0036] like Figure 6 and Figure 7 As shown, the main crossbeam 15 includes a crossbeam body 1501, a linear guide rail 1502, a driving rack 1503, a metal sensor sheet 1504, an anti-collision block 1505, a guide rail protection groove 1506 and a drag chain groove 1507. The crossbeam body 1501 is welded from two 10×400×400 hollow rectangular square steels to ensure a certain rigidity and strength, thereby ensuring that the lifting detection mechanism 13 can move smoothly and with high precision under the traction of the gantry driving mechanism 14.

[0037] The linear guide 1502, drive rack 1503, metal sensor sheet 1504, anti-collision block 1505, guide rail protection groove 1506 and drag chain groove 1507 are all connected to the crossbeam body 1501 by bolts. The linear guide 1502 and drive rack 1503 provide motion path and drive carrier for the gantry drive mechanism 14 respectively. The metal sensor sheet 1504 and anti-collision block 1505 not only provide zero point and limit for the two gantry drive mechanisms 14 to prevent the two gantry drive mechanisms 14 from violent collision due to hard contact in the event of an accident, but also ensure the service life and sudden accidents of the overall drive. The guide rail protection groove 1506 designed up and down reduces dust pollution in the use environment and ensures the service life of the linear guide 1502 and the drive rack 1503.

[0038] like Figure 8 and Fig. 9 As shown, the back-burning heating device 2 includes a main body supporting mechanism 21, a baking gun mechanism 22, a baking gun driving mechanism 23, a combustible gas concentration alarm 24, a cylinder lifting mechanism 25, a guide rail protection cover 26 and a drag chain assembly 27. The main body supporting mechanism 21 and the drag chain assembly 27 are both welded and fixed to the pit embedded plate. An adjustable anchor assembly is provided in the main body supporting mechanism 21, and the height can be adjusted by 50 mm.

[0039] The gun mechanism 22, the gun driving mechanism 23 and the guide rail protection cover 26 are connected to the main support mechanism 21 by bolts. The gun driving mechanism 23 drives the gun mechanism 22 to continuously adjust the back-burning position in the horizontal direction according to the data fed back by the laser displacement sensor 1308; the cylinder lifting mechanism 25 is connected to the gun mechanism 22 and the gun driving mechanism 23 by bolts. The cylinder lifting mechanism 25 drives the gun mechanism 22 to adjust the gun to a certain height range from the longitudinal bone weld position to ensure the back-burning effect. The design stroke of the cylinder lifting mechanism 25 is ±120mm, which can cope with all specifications within 120mm of plane segment deformation, basically covering all extreme conditions of the shipyard.

[0040] The combustible gas concentration alarm 24 is fixed to the baking gun mechanism 22 by bolts, and the test range can reach 10M. A total of 5 units are installed in the device of the present invention, which can fully cover the entire pit area, detect gas concentration information in real time, and ensure the safety of equipment operation.

[0041] like Fig.10 and Fig.11 As shown, the roasting gun mechanism 22 includes a flame gun fixing plate 2201, a flame gun extension rod 2202, a flame gun connecting plate 2203, a flame gun assembly 2204, a supporting plate 2205, a ceramic heat insulation plate 2206, a roller support mechanism 2207, a fisheye joint 2208 and a roller 2209. The flame gun fixing plate 2201 is fixed to the roasting gun drive mechanism 23 by bolts, and the flame gun connecting plate 2203 is connected to the flame gun extension rod 2202 by bolts. The flame gun extension rod 2202 is 600mm long. Through thermal simulation, it is known that the temperature transmitted to the surface of the roasting gun drive mechanism 23 at this distance can be basically controlled within 50~70℃ for heat convection and heat radiation with a flame temperature of 600~800℃, which effectively ensures the service life of the motor, reducer and other components.

[0042] The flame gun assembly 2204 is connected to the flame gun connecting plate 2203 by bolts. The four degrees of freedom of the flame gun assembly are adjustable to broaden the scope of use. The supporting plate 2205 and the ceramic heat insulation plate 2206 are connected to the flame gun assembly 2204 by bolts. The design of the ceramic heat insulation plate 2206 can reduce the heat received by the bottom igniter and the flame gun pipeline when the equipment is continuously heated, thereby ensuring safety and increasing service life.

[0043] The fisheye joint 2208 and the roller 2209 are fixed on the roller support mechanism 2207 and connected to the flame gun extension rod 2202 by bolts. The installation height of the roller 2209 is 20 mm higher than the flame gun assembly 2204, which effectively ensures that when the cylinder lifting mechanism 25 moves upward, only the roller 2209 is in contact with the lower surface of the plane segment, avoiding the risk of the flame gun head being damaged.

[0044] The design of the fisheye joint 2208 can effectively avoid the risk of damaging the special roller and the plane segment due to a radial friction force generated when the plane segment is transported by lateral sliding, resulting in a sudden change in resistance on the surface of the roller 2209 and the plane segment.

[0045] The back-burning heating device 2 is equipped with ten groups of roasting gun mechanisms 22, and each group of roasting gun mechanisms 22 is equipped with two flame gun assemblies 2204, which can realize the synchronous back-burning of ten longitudinal bones at a time. The main body support mechanism 21 and the roasting gun drive mechanism 23 are similar in design principle to the above-mentioned main crossbeam 15 and main portal drive mechanism 14.

[0046] Before the lifting and detecting mechanism 13 of the present invention works, the theoretical height position and width from the edge of the first longitudinal bone are preliminarily known based on the data transmitted back from the marking station. The laser displacement sensor 1308 and the infrared displacement sensor 1310 in the lifting and detecting mechanism 13 move simultaneously, and the position of the first longitudinal bone is queried through the coordinated movement of the laser displacement sensor 1308 in the horizontal and vertical directions, trying to get as close to the weld position as possible.

[0047] After confirming the position, the laser displacement sensor 1308 starts to continuously track the weld position and feeds back to the torch servo motor in the torch drive mechanism 23 to adjust the position of the flame gun assembly 2204. The two laser displacement sensors 1308 can solve the extreme deviations caused by any segmented sheet and longitudinal bone welding itself. The four extreme conditions are as follows: If the sheet is transported as a whole offset, the horizontal data fed back by the laser displacement sensor 1308 is fed back to the baking gun drive mechanism 23 to adjust the back-burning position; If the sheet body is tilted and shifted as a whole, the angle θ can be calculated based on the two laser displacement sensors 1308, and the lateral offset can be converted through the angle and fed back to the baking gun driving mechanism 23 to adjust the back-burning position; If the main panel of the sheet body is deformed upward, the two-point laser displacement sensor 1308 will start to locate from top to bottom in sequence, measure the horizontal distance data of the web near the weld position, and feed it back to the baking gun driving mechanism 23; If the longitudinal bone itself tilts, the laser displacement sensor 1308 can test two points in the height direction to calculate the tilt angle, thereby inferring the horizontal distance data of the bottom weld and feeding it back to the baking gun drive mechanism 23 for adjustment.

[0048] The back-burning method using the planar segmented intelligent back-burning device comprises the following steps: Step S1) After the longitudinal bones of the segmented sheets are welded, they are transported to the starting position of the back-firing station by a transport trolley and wait for the next operation; Step S2) The lifting detection mechanism 13 on the left and right sides of the back-burn detection device 1 starts to find the position, and the horizontal movement driving mechanism 14 in the left and right direction and the telescopic connecting rod 1303 in the up and down direction work simultaneously, and the relative position of the first longitudinal bone at the two ends relative to the set zero point is determined by the laser displacement sensor 1308, and the positions of the longitudinal bones on the remaining segmented sheets are calculated and the position distance is fed back to the roasting gun driving mechanism 23; Step S3) The gun driving mechanism 23 drives the gun mechanism 22 to continue to work, and the plane continues to move forward in sections. After the positioning is completed, the cylinder lifting mechanism 25 of the back-burning heating device 2 is lifted to ensure that the roller 2209 is in contact with the lower surface of the sheet; Step S4) the flame gun assembly 2204 is ignited, the heating system starts to work, and the axial flow fan 3 starts to work continuously; Step S5) The laser displacement sensor 1308 continuously tracks the position of the first longitudinal bone, and feeds back the offset of the horizontal position to the servo motor of the baking gun through conversion calculation; Step S6) the torch driving mechanism 23 continuously adjusts the position of the torch mechanism 22 according to the offset feedback from the laser displacement sensor 1308, so that the longitudinal bone weld is always between the two flame gun assemblies 2204; Step S7) After the back-burning of the segmented sheet is completed, the segmented sheet is transported to the next station, and the back-burning detection device 1 and the back-burning heating device 2 are reset to zero, waiting for the back-burning operation of the next sheet.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A planar segmented intelligent back-burning device, characterized in that: It comprises a back-burn detection device (1), a back-burn heating device (2), an axial flow fan (3) and an air source box device (4), wherein the back-burn detection device (1) and the back-burn heating device (2) are fixedly connected to the embedded parts of the pit, the axial flow fan (3) is located at the left and right ends of the pit and connected to the air suction duct of the workshop, and the air source box device (4) is fixed to the embedded plates at the left and right ends of the pit; The back-burn detection device (1) comprises two gantry support columns (12) and a main crossbeam (15), wherein the main crossbeam (15) spans the two gantry support columns (12) in the left-right direction, and two transverse drive mechanisms (14) are symmetrically arranged on one side of the main crossbeam (15). A lifting detection mechanism (13) is fixedly arranged on the side of the transverse drive mechanism (14), and the transverse drive mechanism (14) and the main crossbeam (15) are driven by gear rack meshing to drive the lifting detection mechanism (13) to move left and right along the main crossbeam (15). The lifting detection mechanism (13) comprises a main mounting plate (1301), an adapter fixing plate (1302), a telescopic connecting rod (1303) mounting pad (1305) and a laser displacement adapter plate (1306); the main mounting plate (1301) is arranged vertically and fixedly connected to the transverse driving mechanism (14); the adapter fixing plate (1302) is vertically fixed to the upper end of the main mounting plate (1301); the upper end of the telescopic connecting rod (1303) is fixedly connected to the adapter fixing plate (1302); the mounting pad (1305) is vertically fixed to the lower end of the main mounting plate (131); and the lower part of the telescopic connecting rod (1303) vertically penetrates the mounting pad. The laser displacement adapter plate (1306) is fixed to the lower end of the telescopic connecting rod (1303); the telescopic connecting rod (1303) is driven to extend and retract upward and downward by a single-axis driving mechanism (1311) so as to drive the laser displacement adapter plate (1306) to move upward and downward; the laser displacement adapter plate (1306) is arranged along the front-to-back direction; laser displacement sensors (1308) are provided at the front and rear ends of the laser displacement adapter plate (1306); an infrared displacement adapter plate (1309) is fixedly provided in the middle of the laser displacement adapter plate (1306) along the vertical direction; and the infrared displacement adapter plate (1309) is provided with an infrared displacement sensor (1310). The back-burning heating device (2) comprises a main body support mechanism (21) and a roasting gun mechanism (22), wherein the main body support mechanism (21) is arranged between two door frame support columns (12) in the left-right direction, and a roasting gun driving mechanism (23) is provided at the front end of the roasting gun mechanism (22), wherein the roasting gun mechanism (22) and the roasting gun driving mechanism (23) are movably connected via a cylinder lifting mechanism (25), wherein the roasting gun driving mechanism (23) has a built-in roasting gun servo motor, wherein the laser displacement sensor (1308) is communicatively connected to the roasting gun servo motor, and wherein the roasting gun driving mechanism (23) and the rear side of the main body support mechanism (21) are meshed with a gear rack to drive the roasting gun mechanism (22) to move left and right along the main body support mechanism (21), The roasting gun mechanism (22) comprises a flame gun fixing plate (2201), a flame gun extension rod (2202) and a flame gun connecting plate (2203) which are connected from front to back in an integral manner; a flame gun supporting rod (2207) is vertically provided at the lower end of the flame gun extension rod (2202); a roller (2209) is provided at the bottom end of the flame gun supporting rod (2207); and a flame gun assembly (2204) is installed at the rear side of the flame gun connecting plate (2203).

2. The plane segmented intelligent back-burning device according to claim 1 is characterized in that: The transverse drive mechanism (14) comprises a drive main board (1401), one side of the drive main board (1401) is fixedly connected to the main mounting plate (1301), and the other side of the drive main board (1401) is provided with a servo motor (1408) and a reducer (1409) running through the front and rear, and the output end of the reducer (1409) is provided with a drive gear (1410), and the drive gear (1410) is meshed with the rack of the main crossbeam (15) for transmission.

3. The plane segmented intelligent back-burning device according to claim 2 is characterized in that: A reducer mounting plate (1402) is fixedly provided on the other side of the driving main board (1401); the reducer (1409) is fixedly connected to the reducer mounting plate (1402) by bolts; the driving main board (1401) is provided with an inverted L-shaped pressing block (1403); the pressing block (1403) is fixedly connected to the driving main board (1401) by bolts; the pressing block (1403) cooperates with the driving main board (1401) to clamp the left and right sides of the reducer mounting plate (1402).

4. The plane segmented intelligent back-burning device according to claim 3 is characterized in that: A reducer support block (1404) is fixedly provided on the outer side of the driving main board (1401), and the reducer support block (1404) is located below the reducer mounting plate (1402). A tightening screw (1412) is vertically penetrated through the reducer support block (1404), and the tightening screw (1412) is threadedly connected to the reducer support block (1404). A butterfly spring (1411) is fixedly provided at the lower end of the reducer mounting plate (1402), and the upper end of the tightening screw (1412) cooperates with the lower end of the butterfly spring (1411) to tighten.

5. The plane segmented intelligent back-burning device according to claim 2, characterized in that: The main crossbeam (15) comprises a crossbeam body (1501), a linear guide rail (1502) and a driving rack (1503); the driving rack (1503) is located on the upper part of the linear guide rail (1502); the driving gear (1410) is meshed with the driving rack (1503); and a sliding block that cooperates with the linear guide rail (1502) is provided on the inner side of the driving main board (1401).

6. The plane segmented intelligent back-burning device according to claim 2, characterized in that: An anti-collision block (1405) is provided on the other side of the driving main board (1401), and the anti-collision block (1405) is located on the adjacent sides of the left and right transverse driving mechanisms (14).

7. The plane segmented intelligent back-burning device according to claim 2, characterized in that: A limit mounting seat (1406) is provided on one side of the driving main board (1401), and a limit switch (1407) is fixed on the limit mounting seat (1406) by means of bolts.

8. The plane segmented intelligent back-burning device according to claim 1, characterized in that: A combustible gas concentration alarm (24) is fixedly connected to the baking gun mechanism (22) via bolts.

9. The plane segmented intelligent back-burning device according to claim 1, characterized in that: A supporting plate (2205) is provided at the bottom of the flame gun assembly (2204), and a ceramic heat insulation plate (2206) is fixedly connected to the lower end of the supporting plate (2205) by means of bolts.

10. A back-burning method using the planar segmented intelligent back-burning device according to claim 1, characterized in that: The following steps are involved: Step S1) After the longitudinal bones of the segmented sheets are welded, they are transported to the starting position of the back-firing station by a transport trolley and wait for the next operation; Step S2) the lifting detection mechanisms (13) on the left and right sides of the back-burn detection device (1) start to locate, the lateral drive mechanism (14) in the left and right directions and the telescopic connecting rod (1303) in the up and down directions work simultaneously, and the relative position of the first longitudinal bones at the two ends relative to the set zero point is determined by the laser displacement sensor (1308), and the positions of the longitudinal bones on the remaining segmented sheets are calculated and the position distance is fed back to the roasting gun drive mechanism (23); Step S3) the gun driving mechanism (23) drives the gun mechanism (22) to continue to work, and the plane continues to move forward in sections. After the positioning is completed, the cylinder lifting mechanism (25) of the back-burning heating device (2) is lifted to ensure that the roller (2209) is in contact with the lower surface of the sheet; Step S4) the flame gun assembly (2204) is ignited, the heating system starts to work, and the axial flow fan (3) starts to work continuously; Step S5) The laser displacement sensor (1308) continuously tracks the position of the first longitudinal bone, and feeds back the offset of the horizontal position to the servo motor of the baking gun through conversion calculation; Step S6) the torch driving mechanism (23) continuously adjusts the position of the torch mechanism (22) according to the offset feedback from the laser displacement sensor (1308), so that the longitudinal bone weld is always located between the two flame gun assemblies (2204); Step S7) After the back-burning of the segmented sheet is completed, the segmented sheet is transported to the next workstation, and the back-burning detection device (1) and the back-burning heating device (2) are reset to zero, waiting for the back-burning operation of the next sheet.

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