Dot-matrix heat preservation and heating system and ship sheet type assembly vertical position welding production line

Abstract

The dot-matrix type heat preservation heating system comprises a supporting frame and a plurality of conveying rollers with the two ends rotationally arranged on the supporting frame, and further comprises a plurality of heating units arranged on the supporting frame, and the heating units are distributed in M rows and N columns; each heating unit comprises a bottom junction box, ceramic heating blocks, a workpiece detection sensor and a temperature measurement sensor, the ceramic heating blocks are uniformly distributed in P rows and Q columns, the ceramic heating blocks are located between the conveying rollers, and a gap is reserved between every two adjacent ceramic heating blocks; a workpiece detection sensor and a temperature measurement sensor are fixed to the two sides, in the length direction of the conveying rollers, of each ceramic heating block respectively. When the ship sheet body welding device is used for welding a ship sheet body, the temperature difference between the position, close to a welding seam, of the sheet body and other parts is small, the sheet body is not prone to bending deformation, the temperatures of the positions where the sheet body is located are the same, the ship sheet body welding device enables the ship sheet body to be welded at the same temperature, and therefore the consistency of the welding quality of the ship sheet body is guaranteed.

Description

Technical Field

[0001] The invention relates to a dot matrix heat preservation and heating system and a small vertical welding production line for ship panels, belonging to the technical field of ship manufacturing production lines. Background Art

[0002] In the process of shipbuilding, welding is an important process link. The Chinese utility model patent with the announcement number CN210549072U discloses a ship group stand-up welding workstation, which includes a gantry mobile platform, a welding robot, and a welding end effector. The gantry mobile platform includes an integral gantry and two tracks. The tracks are laid on the work site. The integral gantry is placed on the tracks and can move forward and backward along the tracks. The gantry is provided with a transverse device, which moves horizontally left and right on the gantry. An up-and-down lifting mechanism is provided on the transverse device, and the up-and-down lifting mechanism moves up and down relative to the gantry. The welding robot is installed on the up and down lifting mechanism of the transverse moving device of the gantry mobile platform. The welding robot can realize six degrees of freedom movement including front and back, left and right, up and down along with the movement of the gantry, transverse moving device and up and down lifting mechanism. The welding end effector is installed on the working end of the welding robot. The welding end effector includes welding equipment, a benchmark alignment unit and a weld tracker, and a weldment temperature detection device. The benchmark alignment unit includes an industrial camera and a laser distance sensor to detect the processing benchmark and provide a control basis for aligning the processing benchmark. The weld tracker includes a laser emitter and an industrial camera to track the weld.

[0003] The above patent discloses a small-scale independent welding workstation for ships, in which the workpiece is not heated before welding, and during welding, only the temperature of the weld is high, and the temperature of the entire workpiece is uneven. During welding, the entire workpiece is easily deformed due to the high temperature of the welding part, which affects the quality of the workpiece. In addition, after each workstation is welded, the temperature of the workstation also changes accordingly. Each time the workpiece is welded, the temperature of the workstation is different, which also makes the consistency of the workpiece welding poor. Summary of the invention

[0004] One object of the present invention is to provide a dot matrix thermal insulation and heating system to solve the technical defects in the prior art that when welding ship sheets, the temperature difference between the sheet near the weld and other parts is large, the sheet is prone to deformation, and the welding effects of the sheet are different due to different welding temperatures, which is not conducive to the overall welding quality of the ship.

[0005] To solve the above problems, the technical solution adopted by the present invention is: a dot matrix thermal insulation heating system, including a support frame and a plurality of conveying rollers rotatably arranged on the support frame at both ends, and also including a plurality of heating units arranged on the support frame, the plurality of heating units are distributed in M ​​rows and N columns, wherein M and N are both integers greater than or equal to 1, the heating unit includes a bottom junction box, a ceramic heating block, a workpiece detection sensor and a temperature measuring sensor, the bottom junction box is fixed on the support frame and is located below the conveying roller, the bottom junction boxes of two adjacent heating units are fixed, the ceramic heating block is fixed on the top of the bottom junction box, the ceramic heating blocks are evenly distributed in P rows and Q columns, and a ceramic heating block is provided between two adjacent conveying rollers, wherein P and Q are both integers greater than or equal to 1, a gap is left between two adjacent ceramic heating blocks, and each ceramic heating block is respectively fixed with a workpiece detection sensor and a temperature measuring sensor on both sides along the length direction of the conveying roller, the workpiece detection sensor is used to detect the position of the workpiece conveyed by the conveying roller, and the temperature measuring sensor is used to detect the temperature of the workpiece. The present invention is used in the welding of ship sheets, wherein the conveying roller is used to convey the workpiece, and the heating unit is used to heat and keep the workpiece warm, so as to ensure that when all the ship sheets are welded, the temperature difference between the sheet near the weld and other parts is small, the sheet is not easy to bend and deform, and the temperature of the sheet is the same, that is, the present invention enables the ship sheets to be welded at the same temperature, thereby ensuring the consistency of the welding quality of the ship sheets. The present invention is provided with multiple heating units, and the workpiece can be heated only at the workpiece conveying position, thereby utilizing energy and reducing the welding cost of the ship sheets. The workpiece detection sensor is used to detect the workpiece and determine which ceramic heating blocks heat the workpiece. The temperature sensor detects the temperature of the workpiece and adjusts the heating of the workpiece by the ceramic heating blocks. Since the present invention can ensure that the workpieces are under the same temperature conditions during welding, the ship sheets welded by the present invention have good quality consistency and the overall welding quality of the ship is better.

[0006] As a further improvement of the present invention, a plurality of conveying rollers are evenly spaced on the conveying roller, a ceramic heating block is provided between two adjacent conveying rollers on the same conveying roller, and the height of the top of the conveying roller is greater than the height of the top of the ceramic heating block. The present invention arranges conveying rollers on the conveying rollers. On the one hand, the conveying rollers support the workpiece to reduce the contact surface with the workpiece, and on the other hand, a larger space is provided for the installation of the ceramic heating block, which facilitates the installation of the heating unit.

[0007] As a further improvement of the present invention, a protective plate is also included, the protective plate is arranged on the support frame, and a plurality of through holes A corresponding to the ceramic heating block and a plurality of through holes B corresponding to the conveying rollers are opened on the protective plate, the ceramic heating block and the conveying roller extend upward from the through holes A and the through holes B respectively, and a notch corresponding to the workpiece detection sensor and the temperature sensor is opened on both sides of the through hole A. The protective plate provided in the present invention can effectively prevent the workpiece from tilting during the conveying process and contacting with the ceramic heating block, the workpiece detection sensor and the temperature sensor, thereby damaging the heating unit, thereby improving the service life of the present invention.

[0008] Another object of the present invention is to provide a small-scale stand-alone welding production line for ship panels to solve the technical defect of poor consistency in the welding quality of ship panels in the prior art.

[0009] To solve the above problems, the technical solution adopted by the present invention is: a small group vertical welding production line for ship sheet bodies, including a workpiece assembly station, a cache preheating station, a robot automatic insulation welding station, a manual detection backburn repair correction station and an offline cache station arranged in sequence from back to front. The workpiece assembly station is used for assembling and coding the sheet body and conveying the assembled workpiece toward the cache preheating station. The cache preheating station is used to preheat and store the workpiece and convey the workpiece toward the robot automatic insulation welding station. The robot automatic insulation welding station includes a welding robot and a dot matrix insulation heating system, which is used to heat, insulate and weld the workpiece, and convey the welded workpiece toward the manual detection backburn repair correction station. The manual detection backburn repair correction station is used for backburning and repairing the welded workpiece, and conveys the workpiece toward the offline cache station. The offline cache station is used for unloading the workpiece after welding. After the sheets are assembled, the workpiece is heated by a cache preheating station, and then heated and welded by a robot automatic heat preservation welding station, so that the welding of all sheets is carried out at the same temperature, thereby improving the quality consistency of the sheet welding and thus improving the overall welding quality of the ship.

[0010] As a further improvement of the present invention, the workpiece assembly station includes an assembly bracket, an assembly conveyor roller, a cantilever crane system, a laser coding system and an assembly drive motor. The two ends of the assembly conveyor roller are rotatably arranged on the assembly bracket, the assembly drive motor is used to drive the assembly conveyor roller to rotate, the cantilever crane system is arranged on one side of the assembly bracket, and is used to lift the ship sheet to the assembly conveyor roller. The laser coding system is arranged on the assembly bracket for coding on the workpiece. In the present invention, the cantilever crane system is used to facilitate the lifting of the sheet to be welded to the assembly conveyor roller. After coding on the workpiece, the assembly conveyor roller is driven to rotate by the assembly drive motor to transport the workpiece toward the cache preheating station.

[0011] As a further improvement of the present invention, the cache preheating station includes a preheating bracket, a preheating conveying roller, a preheating drive motor and an induction coil. The two ends of the preheating conveying roller are rotatably arranged on the preheating bracket and driven to rotate by the preheating drive motor. The induction coil is arranged on one end of the preheating bracket close to the robot automatic insulation welding station. The induction coil is located below between the two preheating conveying rollers and is used to preheat the workpiece conveyed by the preheating conveying roller. The present invention heats the workpiece conveyed through the top of the induction coil, thereby heating the workpiece, so that the temperature of the workpiece conveyed to the robot automatic insulation welding station is higher, so that the set temperature is quickly reached at the robot automatic insulation welding station.

[0012] As a further improvement of the present invention, the cache preheating station also includes a fixed frame, which is arranged at one end close to the robot automatic insulation welding station, and a barcode scanning gun is arranged on the fixed frame for scanning the workpiece and determining the temperature and welding information of the workpiece. The present invention facilitates scanning the workpiece and determining the information required for welding by arranging a barcode scanning gun on the robot automatic insulation welding station, and the fixed frame facilitates the fixing of the barcode scanning gun.

[0013] As a further improvement of the present invention, a visual scanning device is provided at one end of the manual detection backburn repair and correction station close to the robot automatic heat preservation welding station to detect whether the workpiece is arched after welding. The present invention is provided with a visual scanning device, which can conveniently determine whether the workpiece has an arch defect, so as to repair and correct the workpiece with the arch defect as needed, and further improve the quality of the workpiece after welding.

[0014] As a further improvement of the present invention, safety fences are provided on both sides of the cache preheating station, the robot automatic insulation welding station, and the manual detection back burn repair correction station, and a safety door is provided on the safety fence. When any safety door is opened, the workpiece assembly station, the cache preheating station, the robot automatic insulation welding station, the manual detection back burn repair correction station, and the offline cache station all stop working. The present invention sets a safety fence to improve the safety of the present invention, and the safety door is interlocked with the entire system. As long as the safety door is opened, the entire present invention will stop running immediately, further improving the safety of the present invention.

[0015] As a further improvement of the present invention, both ends of the safety fence of the robot automatic insulation welding station are provided with windproof soft curtains. The present invention provides windproof soft curtains, which can effectively prevent the influence of wind in the front and rear directions on the welding arc, and further improve the welding quality of the present invention.

[0016] In summary, the beneficial effects of the present invention are as follows: when the sheet is welded, the sheet is heated and insulated, reducing the temperature difference between the sheet weld and other parts away from the weld, thereby ensuring the welding quality of the ship sheet group. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the front view of Example 1.

[0018] Figure 2 This is a top view of Example 1.

[0019] Figure 3 It is a left side view of Example 1.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of Example 1.

[0021] Figure 5 yes Figure 2 A partial enlarged view of point A in the middle.

[0022] Figure 6 This is the front view of Example 2.

[0023] Figure 7 This is a top view of Example 2.

[0024] Figure 8 This is a top view of the cache preheating station in Example 2.

[0025] Fig. 9 It is a three-dimensional structural diagram of the cache preheating station in Example 2.

[0026] Among them: 1. Support frame; 2. Conveyor roller; 3. Heating unit; 4. Bottom junction box; 5. Ceramic heating block; 6. Workpiece detection sensor; 7. Temperature sensor; 8. Conveyor roller; 9. Protective plate; 10. Through hole A; 11. Notch; 12. Workpiece assembly station; 13. Cache preheating station; 14. Robot automatic insulation welding station; 15. Manual detection backburn repair correction station; 16. Offline cache station; 17. Assembly bracket; 18 , assemble conveyor roller; 19. Cantilever crane system; 20. Preheating bracket; 21. Preheating conveyor roller; 22. Induction coil; 23. Fixed bracket; 24. Barcode scanner; 25. Visual scanning equipment; 26. Back-burning support frame; 27. Back-burning conveyor roller; 28. Scanning bracket; 29. ​​Off-line rack; 30. Off-line conveyor roller; 31. Ground rail; 32. Cantilever gantry system; 33. Welding robot; 34. Column; 35. Cantilever beam; 36. Electric hoist. DETAILED DESCRIPTION

[0027] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings. Example 1

[0028] like Figures 1 to 5The dot matrix thermal insulation and heating system shown in the figure comprises a support frame 1, a thermal insulation and heating drive motor (not shown in the figure) and a plurality of conveying rollers 2 rotatably arranged at both ends on the support frame 1, the plurality of conveying rollers 2 are arranged in parallel and at equal intervals, the left and right ends of the conveying rollers 2 are rotatably mounted on the support frame 1 by bearings, a sprocket (not shown in the figure) is arranged at one end of the conveying rollers 2, the sprockets are connected by chains, one end of one of the conveying rollers 2 is connected to the thermal insulation and heating drive motor, and the conveying rollers 2 are driven by the thermal insulation and heating drive motor to rotate synchronously in the same direction, and in this embodiment, two sprockets are fixedly arranged on each conveying roller 2, except for the ones located at the front and the rear. In addition to the rear conveyor roller 2, the two sprockets on each conveyor roller 2 are respectively connected to the sprockets on the two conveyor rollers 2 in front and behind it by chains. The conveyor roller 2 located at the front and the rear is only connected to the conveyor roller 2 adjacent to it by a chain. A sprocket on the front or rear conveyor roller 2 is connected to the output shaft of the insulation and heating drive motor by a chain. In this way, this embodiment only needs one insulation and heating drive motor to drive all the conveyor rollers 2 to rotate synchronously for conveying workpieces. The insulation and heating drive motor in this embodiment is fixed to the lower part of the front end or rear end of the support frame 1.

[0029] like Figures 1 to 5As shown, the present embodiment is provided with a plurality of heating units 3, and the heating units 3 are arranged on the support frame 1, and the plurality of heating units 3 are distributed in M ​​rows and N columns, wherein M and N are both integers greater than or equal to 1, and the heating units 3 in the present embodiment include a bottom junction box 4, a ceramic heating block 5, a workpiece detection sensor 6 and a temperature sensor 7, and the temperature sensor 7 is an infrared temperature sensor, and the bottom junction box 4 is fixed on the support frame 1, and the bottom junction box 4 is located below the conveying roller 2, and the bottom junction boxes 4 of two adjacent heating units 3 are fixed, and the cross-section of the bottom junction box 4 in the present embodiment is rectangular, and the bottom junction boxes 4 of two adjacent heating units 4 are engaged, and the bottom junction box 4 is detachably installed, and when one of the heating units 3 fails, only the failed heating unit 3 needs to be removed for replacement, and the ceramic heating block 5 in the present embodiment is fixed on the top of the bottom junction box 4, and the ceramic heating blocks 5 are evenly distributed in P rows and Q columns, and a ceramic heating block 5 is provided between two adjacent conveying rollers 2, and the conveying roller 2 will not block the ceramic heating block 5, wherein P and Q are both greater than or equal to 1. Integer, there is a gap between two adjacent ceramic heating blocks 5, and the gap width between each two ceramic heating blocks 5 is equal, each ceramic heating block 5 is fixed with a workpiece detection sensor 6 and a temperature sensor 7 on both sides along the length direction of the conveying roller 2, wherein the workpiece detection sensor 6 is used to detect the position of the conveying roller 2 conveying the workpiece, and the temperature sensor 7 is used to detect the temperature of the workpiece. The workpiece detection sensor 6 is used to detect the position of the workpiece conveying. When the temperature sensor 7 detects that the temperature of the workpiece is lower than the set temperature, the corresponding ceramic heating block 5 works to heat the workpiece, and when the temperature sensor 7 detects that the temperature of the workpiece reaches the set temperature, the corresponding ceramic heating block 5 works to keep the temperature of the workpiece at the set temperature without reducing it. In this embodiment, the power line of the ceramic heating block 5, the power line of the workpiece detection sensor 6 and the power line and signal line of the temperature sensor 7 are all extended downward into the bottom junction box 4 to reduce the influence of high temperature on them. The connection method of the workpiece detection sensor 6, the temperature sensor 7 and the ceramic heating block 5 with the control system in this embodiment is all prior art, which will not be described in detail in this embodiment.

[0030] like Figures 1 to 5 As shown, in this embodiment, a plurality of conveying rollers 8 are evenly spaced and fixedly arranged on the conveying roller 2, and a ceramic heating block 5 is provided between two adjacent conveying rollers 8 on the same conveying roller (2). The height of the top of the conveying roller 8 is slightly greater than the height of the top of the ceramic heating block 5. When the conveying roller 8 conveys the workpiece, the workpiece is supported upward, so that the workpiece does not directly contact the ceramic heating block 5, the workpiece detection sensor 6 and the temperature sensor 7.

[0031] like Figures 1 to 5As shown, the present embodiment is provided with a protective plate 9, the protective plate 9 is arranged on the support frame 1, and a plurality of through holes A10 corresponding to the ceramic heating block 5 and a plurality of through holes B corresponding to the conveying roller 8 are provided on the protective plate 9, wherein the through hole A10 and the through hole B are both rectangular holes, the ceramic heating block 5 and the conveying roller 8 extend upward from the through hole A10 and the through hole B respectively, and the workpiece detection sensor 6 and the temperature measuring sensor 7 are located below the protective plate 9, and a notch 11 corresponding to the workpiece detection sensor 6 and the temperature measuring sensor 7 is provided on both sides of the through hole A10 respectively, so as to prevent the protective plate 9 from blocking the detection of the workpiece detection sensor 6 and the temperature measuring sensor 7, and the notch 11 in the present embodiment is semicircular and symmetrically arranged on both sides of the through hole A10. Example 2

[0032] This embodiment is a small vertical welding production line for ship panels. Figures 6 to 9 As shown, it includes a workpiece assembly station 12, a cache preheating station 13, a robot automatic insulation welding station 14, a manual detection back-burning repair correction station 15 and an offline cache station 16 which are arranged in sequence from back to front. The workpiece assembly station 12 is used for assembling and coding the sheet and conveying the assembled workpiece toward the cache preheating station 13. The cache preheating station 13 is used for preheating and storing the workpiece and conveying the workpiece toward the robot automatic insulation welding station 14. The robot automatic insulation welding station 14 includes a welding robot 33 and a dot matrix insulation heating system of Example 1, which is used for heating, insulating and welding the workpiece, and conveying the welded workpiece toward the manual detection back-burning repair correction station 15. The manual detection back-burning repair correction station 15 is used for back-burning and repairing and correcting the workpiece after welding, and conveying the workpiece toward the offline cache station 16. The offline cache station 16 is used for unloading the workpiece after welding.

[0033] like Figures 6 to 9As shown, the workpiece assembly station 12 includes an assembly bracket 17, an assembly conveyor roller 18, a cantilever hanging system 19, a laser coding system (not shown in the figure) and an assembly drive motor (not shown in the figure). The assembly conveyor roller 18 has multiple and equally spaced arrangements. The left and right ends of the assembly conveyor roller 18 are rotatably arranged on the assembly bracket 17. The assembly drive motor is used to drive the assembly conveyor roller 18 to rotate. In this embodiment, the connection method of the assembly conveyor roller 18 and the connection method of the assembly conveyor roller 18 and the assembly drive motor are the same as those of the dot matrix insulation heating system, which will not be described in detail in this embodiment. The assembly drive motor in this embodiment is fixed to the lower part of the assembly bracket 17, and the cantilever hanging system 19 is arranged on the assembly bracket. One side of 17 is used to lift the ship sheet to the assembly conveyor roller 18. The cantilever crane system 19 includes a column 34, a cantilever beam 35 and an electric hoist 36. One end of the cantilever beam 35 is rotatably set on the top of the column 34. The electric hoist 36 is set on the cantilever beam 35 and can move on the cantilever beam 35. The sheet used to be welded into a workpiece is lifted to the assembly conveyor roller 18 for manual assembly. The laser coding system is set on the assembly bracket 17 for coding on the workpiece. After the sheet is manually assembled, the laser coding system is used to code the workpiece according to the welding requirements. In this embodiment, a bar code or a two-dimensional code is printed on the workpiece, which contains information such as the set temperature and welding method required for the welding of the workpiece.

[0034] like Figures 6 to 9 As shown, the cache preheating station 13 includes a preheating bracket 20, a preheating conveying roller 21, a preheating drive motor (not shown in the figure) and an induction coil 22. There are multiple preheating conveying rollers 21, and the multiple preheating conveying rollers 21 are arranged in parallel at equal intervals along the left and right directions. Both ends of the preheating conveying rollers 21 are rotatably arranged on the preheating bracket 20 and driven to rotate by the preheating drive motor. The connection method between the preheating drive motor and the preheating conveying roller 21 is the same as the connection method between the heat preservation heating drive motor and the conveying roller 2, which is not described in detail in this embodiment. The induction coil 22 in this embodiment is arranged on the preheating bracket 20 near one end of the robot automatic heat preservation welding station 14, and the induction coil 22 is located between the two ends. The bottom between the preheating conveying rollers 21 is used to preheat the workpiece conveyed by the preheating conveying rollers 21. In this embodiment, three induction coils 22 are arranged. The length direction of the three induction coils 22 is the same as the length direction of the preheating conveying rollers 21, and the three induction coils 22 are arranged at equal intervals along the front-to-back direction. The three induction coils 22 are respectively located between four adjacent preheating conveying rollers 21 in sequence. The distance between two adjacent induction coils 22 is equal to the distance between two adjacent preheating conveying rollers 21. When the workpiece is conveyed, it passes over the three induction coils 22 in sequence. The induction coils 22 preheat the workpiece to raise the temperature of the workpiece to the set welding temperature.

[0035] like Figures 6 to 9As shown, the cache preheating station 13 is provided with a fixed frame 23, and the fixed frame 23 is arranged at one end close to the robot automatic insulation welding station 14. A barcode scanner 24 is arranged on the fixed frame 23, which is used to scan the workpiece, and determine the temperature and welding method of the workpiece welding setting by scanning the barcode or QR code on the workpiece. A ground rail 31 is arranged on one side of the dot matrix insulation heating system, and the ground rail 31 is arranged along the front and back direction. A cantilever gantry system 32 is arranged on the ground rail 31, and the cantilever gantry system 32 can move forward and backward along the ground rail 31. The welding robot 33 is arranged on the cantilever of the cantilever gantry system 32, and a visual scanning camera is arranged on the cantilever of the cantilever gantry system 32, which is used to scan the workpiece to determine the welding position of the workpiece. The welding robot 33 welds the workpiece according to the welding position of the workpiece determined by the visual scanning camera. The welding robot 33 in this embodiment can move synchronously with the movement of the cantilever gantry system 32.

[0036] like Figures 6 to 9 As shown, the manual inspection back-burn repair and correction station 15 in this embodiment includes a back-burn support frame 26, a back-burn conveying roller 27 and a lifting back-burn driving motor (not shown in the figure). There are multiple back-burn conveying rollers 27, and the multi-pole back-burn conveying rollers 27 are equally spaced and arranged in parallel. The left and right ends of the back-burn conveying rollers 27 are rotatably mounted on the back-burn support frame 26. The back-burn driving motor is connected to the back-burn conveying roller 27 to drive the back-burn conveying roller 27 to rotate. The back-burn driving motor is fixed to the lower part of the back-burn support frame 20. The connection structure between the back-burn driving motor and the back-burn conveying roller 27 is the same as the connection structure between the heat preservation heating driving motor and the conveying roller 2, which will not be repeated in this embodiment. In this embodiment, a visual scanning device 25 is provided at one end of the manual detection back-burn repair and correction station 15 close to the robot automatic insulation welding station 14, which is used to detect whether the workpiece is arched after welding. In this embodiment, a scanning bracket 28 is set up on the manual detection back-burn repair and correction station 15, and the visual scanning device 25 is fixed on the scanning bracket 28. In this embodiment, a heating device is provided on the back-burn support frame 26 close to the robot automatic insulation welding station 14. The heating device optimally adopts the heating unit 3 in multiple embodiments 1 to heat the workpiece. The visual scanning device 25 scans the workpiece to form a photo, and then the photo is manually identified. When it is found that the back plate at the bottom of the workpiece is arched, the heating unit 3 heats the workpiece, and the workpiece is repaired and corrected when the workpiece is at a higher temperature, so that the back plate of the workpiece is flat, which is convenient for subsequent use.

[0037] like Figures 6 to 9As shown, the offline buffer station 16 in this embodiment includes an offline frame 29, an offline conveying roller 30 and an offline driving motor. A plurality of offline conveying rollers 30 are evenly spaced and arranged on the offline frame 29. Both ends of the offline conveying rollers 30 are rotatably connected to the offline frame 29. The offline driving motor is used to drive the offline conveying rollers 30 to rotate relative to the offline frame 29. The connection method between the offline driving motor and the offline conveying roller 30 in this embodiment is the same as the connection method between the heat preservation heating driving motor and the conveying roller 2, which is not described in detail in this embodiment. The workpiece after repair and correction at the manual inspection back-burning repair and correction station 15 is transported to the offline buffer station 16, and is transported and offline at the offline buffer station 16 for use in the next process, or is directly transported to the next station.

[0038] In this embodiment, safety fences (not shown in the figure) are arranged on the left and right sides of the cache preheating station 13, the robot automatic insulation welding station 14, and the manual detection back burn repair correction station 15, and a safety door (not shown in the figure) is arranged on the safety fence. The safety fence includes a frame made of aluminum profiles and a panel fixed on the frame. In this embodiment, a safety door lock is arranged on the safety door, and the safety door lock is connected to the overall control system in this embodiment. When any safety door is opened, the safety door lock controls the workpiece assembly station 12, the cache preheating station 13, the robot automatic insulation welding station 14, the manual detection back burn repair correction station 15 and the offline cache station 16 to stop working through the control system, thereby improving safety. The safety fence in this embodiment also plays a role in wind protection. In this embodiment, windproof soft curtains (not shown in the figure) are arranged at both ends of the safety fence of the robot automatic insulation welding station 14, thereby effectively preventing the influence of wind in the direction of workpiece transportation on the welding arc.

[0039] like Figures 6 to 9As shown, when this embodiment is used for welding ship panels, the cantilever crane system 19 is first used to lift the cut metal plate onto the assembly conveyor roller 18, the panels are manually assembled, and the laser coding system is used to code the panels. The assembly drive motor drives the assembly conveyor roller 18 to convey the workpiece toward the cache preheating station 13. The cache preheating station 13 receives the workpiece conveyed by the assembly station 12 and conveys the workpiece toward the robot automatic insulation welding station 14. When the workpiece is conveyed to a position close to the robot automatic insulation welding station 14, the induction coil 22 heats the workpiece to make the temperature of the workpiece close to the set welding temperature, and the workpiece continues to be conveyed to the robot automatic insulation welding station 14. The robot automatic insulation welding station 14 receives the workpiece. After that, the barcode scanner 24 scans the barcode or QR code on the workpiece, reads the welding setting temperature and welding mode information therein, and then the dot matrix heat preservation heating system heats and insulates the workpiece, the welding robot 33 welds the workpiece, and continues to transport the workpiece toward the manual inspection backburn repair correction station 15, the visual scanning device 25 scans the workpiece, and manually checks whether the sheet of the workpiece is arched, if so, the heating unit 3 heats the workpiece, and manually repairs and corrects the workpiece, and then continues to transport the workpiece toward the offline cache station 16. After the offline cache station 16 receives the workpiece, it collects the welded workpiece at the offline cache station 16, or the offline cache station 16 continues to transport the workpiece to the station of the next processing process. In this embodiment, when the safety door on the safety fence is opened, the entire system stops running, thereby improving the safety of this embodiment.

[0040] The parts not specifically described in the above description are all prior art, or can be implemented by prior art. Moreover, the specific implementation cases described in the present invention are only preferred implementation cases of the present invention, and are not used to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the content of the patent scope of the present invention should be regarded as the technical scope of the present invention.

Claims

1. A lattice heat preservation and heating system, comprising a support frame (1) and a plurality of conveying rollers (2) rotatably disposed at both ends on the support frame (1), characterized in that: The device also comprises a plurality of heating units (3) arranged on the support frame (1), wherein the plurality of heating units (3) are arranged in M ​​rows and N columns, wherein M and N are both integers greater than or equal to 1, and the heating unit (3) comprises a bottom junction box (4), a ceramic heating block (5), a workpiece detection sensor (6) and a temperature measurement sensor (7), wherein the bottom junction box (4) is fixed on the support frame (1) and is located below the conveying roller (2), the bottom junction boxes (4) of two adjacent heating units (3) are fixed to each other, and the ceramic heating block (5) is fixed to the top of the bottom junction box (4). The ceramic heating blocks (5) are evenly distributed in P rows and Q columns, and a ceramic heating block (5) is provided between two adjacent conveying rollers (2), wherein P and Q are both integers greater than or equal to 1, and a gap is left between two adjacent ceramic heating blocks (5). A workpiece detection sensor (6) and a temperature sensor (7) are respectively fixed on both sides of each ceramic heating block (5) along the length direction of the conveying roller (2), wherein the workpiece detection sensor (6) is used to detect the position of the workpiece conveyed by the conveying roller (2), and the temperature sensor (7) is used to detect the temperature of the workpiece.

2. The matrix heat preservation and heating system according to claim 1 is characterized in that: A plurality of conveying rollers (8) are evenly spaced on the conveying roller (2); a ceramic heating block (5) is provided between two adjacent conveying rollers (8) on the same conveying roller (2); and the height of the top of the conveying roller (8) is greater than the height of the top of the ceramic heating block (5).

3. The matrix heat preservation and heating system according to claim 2 is characterized in that: The invention also comprises a protective plate (9), the protective plate (9) being arranged on the support frame (1), and having a plurality of through holes A (10) corresponding to the ceramic heating block (5) and a plurality of through holes B corresponding to the conveying roller (8), the ceramic heating block (5) and the conveying roller (8) respectively extending upward from the through hole A (10) and the through hole B, and having a notch (11) corresponding to the workpiece detection sensor (6) and the temperature measurement sensor (7) respectively on both sides of the through hole A (10). 4.Ship body small group welding production line, characterized by: The invention comprises a workpiece assembly station (12), a buffer preheating station (13), a robot automatic insulation welding station (14), a manual inspection backburning repair correction station (15) and an offline buffer station (16) which are arranged in sequence from back to front. The workpiece assembly station (12) is used for assembling and coding the sheet and conveying the assembled workpiece toward the buffer preheating station (13). The buffer preheating station (13) is used for preheating and storing the workpiece and conveying the workpiece toward the robot automatic insulation welding station (14). The robot automatic insulation welding station (14) comprises a welding robot and a dot matrix insulation heating system according to any one of claims 1 to 3, which is used for heating, insulating and welding the workpiece and conveying the welded workpiece toward the manual inspection backburning repair correction station (15). The manual inspection backburning repair correction station (15) is used for backburning and repairing the welded workpiece and conveying the workpiece toward the offline buffer station (16). The offline buffer station (16) is used for unloading the welded workpiece.

5. The ship body small group stand-up welding production line according to claim 4 is characterized by: The workpiece assembly station (12) comprises an assembly bracket (17), an assembly conveying roller (18), a cantilever crane system (19), a laser coding system and an assembly drive motor. Both ends of the assembly conveying roller (18) are rotatably arranged on the assembly bracket (17). The assembly drive motor is used to drive the assembly conveying roller (18) to rotate. The cantilever crane system (19) is arranged on one side of the assembly bracket (17) and is used to hang the ship sheet onto the assembly conveying roller (18). The laser coding system is arranged on the assembly bracket (17) and is used to code the workpiece.

6. The ship body small group stand-up welding production line according to claim 4 is characterized by: The cache preheating station (13) comprises a preheating bracket (20), a preheating conveying roller (21), a preheating drive motor and an induction coil (22). Both ends of the preheating conveying roller (21) are rotatably arranged on the preheating bracket (20) and driven to rotate by the preheating drive motor. The induction coil (22) is arranged on one end of the preheating bracket (20) close to the robot automatic heat preservation welding station (14). The induction coil (22) is located below between the two preheating conveying rollers (21) and is used to preheat the workpiece conveyed by the preheating conveying roller (21).

7. The ship body small group stand-up welding production line according to claim 4 is characterized by: The cache preheating station (13) further comprises a fixing frame (23), which is arranged at one end close to the robot automatic heat preservation welding station (14), and a barcode scanning gun (24) is arranged on the fixing frame (23) for scanning the workpiece and determining the temperature and welding information of the workpiece.

8. The ship body small group stand-up welding production line according to claim 4 is characterized by: A visual scanning device (25) is provided at one end of the manual inspection backburn repair and correction station (15) close to the robot automatic heat preservation welding station (14) for detecting whether the workpiece is arched after welding.

9. The ship body small group stand-up welding production line according to claim 4 is characterized by: Safety fences are arranged on both sides of the cache preheating station (13), the robot automatic heat preservation welding station (14), and the manual detection back burn repair correction station (15), and safety doors are arranged on the safety fences. When any one of the safety doors is opened, the workpiece assembly station (12), the cache preheating station (13), the robot automatic heat preservation welding station (14), the manual detection back burn repair correction station (15), and the offline cache station (16) all stop working.

10. The ship body sub-unit welding production line according to claim 9 is characterized in that: Windproof soft curtains are provided at both ends of the safety fence of the robot automatic heat-insulating welding station (14).

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