Self-adaptive composite welding device for thin plate splicing

Abstract

The utility model discloses a thin plate splicing self-adaptive composite welding device, and belongs to the technical field of welding equipment. The self-adaptive composite welding device for sheet splicing comprises a rack, and a welding host, a key pressing mechanism, a positioning and centering mechanism, an anti-misalignment mechanism, a laser detection mechanism and a control host which are arranged on the rack, a conveying roller way is arranged on the rack, and a welding area is arranged in the conveying roller way area; the welding host and the key pressing mechanism are arranged above a welding area of the conveying roller way; the positioning and centering mechanism is arranged below a welding area of the conveying roller way in a lifting manner; the misalignment-proof edge is arranged in the welding area; a detection area of the laser detection mechanism is arranged in the welding area; the control host is connected with the welding host, the key pressing mechanism, the positioning and centering mechanism, the misalignment prevention mechanism and the laser detection mechanism. According to the thin plate splicing self-adaptive composite welding device, welding deformation can be restrained, and the welding quality and efficiency are improved.

Description

Technical Field

[0001] This application belongs to the field of welding equipment technology, and in particular relates to an adaptive composite welding device for thin plate splicing. Background Technology

[0002] The production of special railway freight cars involves a large number of splicing and welding operations on thin plates of 1-3mm, resulting in a large workload. The length of a single weld seam is quite long, reaching over 4m, with assembly gaps between 0 and 1.5mm. Furthermore, the splicing welding is often carried out using processes such as plasma welding, argon arc welding, and gas shielded welding, which leads to significant welding deformation, unsatisfactory welding quality, and low welding efficiency. Summary of the Invention

[0003] This application provides an adaptive composite welding device for thin-plate splicing, aiming to at least partially solve the technical problems of large welding deformation, unsatisfactory welding quality, and unsatisfactory welding efficiency in thin-plate splicing welding. Therefore,

[0004] This application provides a thin plate splicing adaptive composite welding device, including: a frame and a welding host, a key clamping mechanism, a positioning and centering mechanism, an anti-misalignment mechanism, a laser detection mechanism and a control host, all mounted on the frame;

[0005] The frame is provided with a conveyor roller track, and the conveyor roller track area is provided with a welding area;

[0006] The welding host and the piano key pressing mechanism are arranged above the welding area of ​​the conveyor roller to cooperate in pressing the thin plate to be welded and performing the welding operation;

[0007] The positioning and centering mechanism is vertically and flexibly disposed below the welding area of ​​the conveyor rollers, so that it rises above the conveyor rollers when the thin plate is centered, and stops and positions the thin plate.

[0008] The anti-misalignment mechanism is installed in the welding area to press down a thin plate that has been aligned during the alignment and splicing of thin plates.

[0009] The detection area of ​​the laser detection mechanism is set in the welding area to detect the gap between the two thin plates being spliced.

[0010] The control host, the welding host, the piano key clamping mechanism, the positioning and centering mechanism, the anti-misalignment mechanism, and the laser detection mechanism coordinate and control the centering and splicing of the thin plates, the splicing gap detection, and the clamping and welding of the thin plates.

[0011] In some embodiments, the welding host includes a laser gas shielded hybrid welding machine and a track moving mechanism;

[0012] The track moving mechanism is mounted on the frame, and the laser gas shielded composite welding machine is mounted on the track moving mechanism.

[0013] In some embodiments, the positioning and centering mechanism includes: a mounting base, a rotary drive cylinder, a rotary seat, a rotary table, a lifting bracket, a lifting cylinder, a guide cylinder, a lifting shaft, and a positioning stop arm;

[0014] The rotary seat is fixed on the mounting base, the rotary disk is rotatably disposed in the rotary seat, the cylinder body of the rotary drive cylinder is fixed on the mounting base, and the rotation shaft of the rotary drive cylinder is connected to the rotary disk to drive the rotary disk to rotate in the rotary seat.

[0015] The lifting bracket is fixed on the rotary table, the guide cylinder is fixed on the lifting bracket, and the lifting shaft is movably disposed in the guide cylinder along its axial direction, and the lifting shaft is coaxial with the rotating shaft.

[0016] The cylinder body of the lifting cylinder is fixed on the lifting bracket, and the piston rod of the lifting cylinder is connected to the lifting shaft to push the lifting shaft to slide inside the guide cylinder;

[0017] The positioning arm is fixed on the lifting shaft.

[0018] In some embodiments, the positioning and centering mechanism further includes: a slewing bearing;

[0019] The inner ring of the slewing bearing is fitted onto the slewing disc, and the outer ring of the slewing bearing is fixed inside the slewing seat.

[0020] In some embodiments, the rotary seat is provided with a first support platform, and the outer side wall of the rotary table is provided with a second support platform;

[0021] The outer ring of the slewing bearing rests on the first bearing platform and is pressed by a clamping and limiting ring;

[0022] The inner ring of the slewing bearing rests on the second bearing platform.

[0023] In some embodiments, the guide cylinder includes a cylinder body and a mounting flange disposed on the cylinder body;

[0024] The mounting flange is fixed to the lifting bracket by fasteners.

[0025] In some embodiments, a screw hole is provided on the lifting shaft, and the screw hole is coaxially arranged with the lifting shaft, and the piston rod is screwed into the screw hole;

[0026] The end of the positioning arm away from the lifting shaft has a contact arc surface;

[0027] The positioning arm has a positioning through hole at one end near the lifting shaft, and a positioning boss is provided on the end face of the lifting shaft, the positioning boss being embedded in the positioning through hole;

[0028] The positioning through hole is a countersunk hole, and a clamping member is provided in the countersunk hole. The clamping member is fixed to the positioning boss by fasteners and presses the positioning stop arm onto the lifting shaft.

[0029] In some embodiments, the anti-misalignment mechanism includes: a base, a push-pull mechanism, and a pressing element;

[0030] The push-pull mechanism is mounted on the base and is connected to the pressing member to push the pressing member to press the edge of the thin steel plate into place.

[0031] The pressing member is provided with a pressing part and a guiding part. The guiding part is connected to the pressing part to guide the edge of the incoming steel sheet to abut against the pressing part and the edge of the steel sheet that is in place.

[0032] In some embodiments, the pressing element includes: a pressing seat, a connecting arm, a first connecting rod, and a second connecting rod;

[0033] The pressing seat is connected to the push-pull mechanism, the first end of the connecting arm is connected to the pressing seat, and the pressing part and the guide part are disposed at the second end of the connecting arm;

[0034] One end of the first connecting rod and the second connecting rod are hinged to the base, and the other end is hinged to the pressure seat. The first connecting rod and the second connecting rod are parallel, and the lines connecting the hinge points at both ends of the first connecting rod and the second connecting rod in sequence form a parallelogram.

[0035] In some embodiments, the push-pull mechanism includes a drive cylinder, the cylinder body of which is hinged to the base, and the cylinder rod of which is connected to the pressure seat.

[0036] The embodiments of this application have at least the following beneficial effects:

[0037] The thin-plate splicing adaptive composite welding device provided in this application embodiment is based on a frame and equipped with a conveyor roller conveyor as a moving carrier for conveying and centering the thin plates, realizing the movement and centering splicing operations of the thin plates; a welding area is planned on the conveyor roller conveyor as the area for performing welding operations; and a positioning and centering mechanism is set below the welding area. During the thin-plate splicing and centering process, after the first thin plate moves along the conveyor roller conveyor through the welding area, the positioning and centering mechanism rises above the conveyor roller conveyor, stopping and positioning the edge of the first thin plate to be spliced ​​on the reverse-moving and positioned side. Then, the edge to be spliced ​​is pressed by the anti-misalignment mechanism set above the welding area. The positioning and centering mechanism descends and resets, allowing the second sheet to move along the conveyor rollers towards the first sheet, abutting against the splicing edge of the first sheet. This enables high-quality sheet alignment and splicing, reducing the risk of misalignment. After splicing, the welding section of the first and second sheets can be pressed together by a key-pressing mechanism. A laser detection mechanism detects the splicing gap specifications, allowing the control host to drive the welding host to perform welding operations along the splicing gap according to the specifications. This improves splicing quality, accurately detects the splicing gap specifications, stably presses the sheets, improves overall welding deformation, optimizes welding quality, and enhances the efficiency of splicing and welding operations through automation. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 A schematic diagram of the structure of the thin plate splicing adaptive composite welding device in an embodiment of this application is shown;

[0040] Figure 2 It shows Figure 1 Top view;

[0041] Figure 3 It shows Figure 1 The left view;

[0042] Figure 4 It shows Figure 1 A schematic diagram of the welding host in the thin-plate splicing adaptive composite welding device;

[0043] Figure 5 It shows Figure 4 The left view;

[0044] Figure 6 It shows Figure 1 A three-dimensional structural diagram of the positioning and centering mechanism in the thin-plate splicing adaptive composite welding device;

[0045] Figure 7 It shows Figure 6 The main view;

[0046] Figure 8 It shows Figure 7 A sectional view along line AA of the positioning and centering mechanism in the middle;

[0047] Figure 9 It shows Figure 1 A schematic diagram of the anti-misalignment mechanism in the thin-plate splicing adaptive composite welding device;

[0048] Figure 10 It shows Figure 9 Another structural diagram of the anti-misalignment mechanism in the middle;

[0049] Figure 11 It shows Figure 9 A schematic diagram of the working state of the anti-misalignment mechanism.

[0050] Figure label:

[0051] 100 - Frame, 110 - Conveyor rollers;

[0052] 200 - Welding host, 210 - Laser gas shielded composite welding machine, 220 - Track moving mechanism;

[0053] 300-Key clamping mechanism;

[0054] 400 - Positioning and centering mechanism; 410 - Mounting base; 411 - Upper mounting platform; 412 - Mounting bracket; 413 - Lower mounting platform;

[0055] 420-Rotary drive cylinder, 421-Rotary shaft, 430-Rotary seat, 431-Pressure limit ring, 431a-Pressure boss, 432-First support platform, 440-Rotary disc, 441-Second support platform, 450-Lifting bracket, 451-Upper support platform, 452-Bracket body, 453-Lower support platform, 460-Lifting cylinder, 461-Piston rod, 470-Guide cylinder, 471-Mounting flange, 472-Lifting shaft, 473-Pressure component, 474-Locking component, 480-Positioning stop arm, 481-Contact arc surface, 490-Rotary bearing, 491-Outer ring, 492-Inner ring;

[0056] 500-Anti-misalignment mechanism, 510-Anti-misalignment mechanism body, 511-Base, 511a-Base plate, 511b-Hinge seat, 512-Drive cylinder, 513-Flange pressing component, 513a-Flange pressing seat, 513b-Connecting arm, 513c-Flange pressing part, 513c1-Guide part, 513d-First connecting rod, 513e-Second connecting rod, 514-Positioning buckle, 515-Shock damping pad, 520-Support body, 521-Mounting beam;

[0057] 600-Laser Inspection Agency;

[0058] 700 - Control host. Detailed Implementation

[0059] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0060] Furthermore, reference numerals and / or reference letters may be repeated in different examples in this application. Such repetition is for simplification and clarity purposes and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0061] This application is described below with reference to the accompanying drawings and specific embodiments:

[0062] In the production of railway vehicles, thin plate splicing welding is frequently performed, requiring specialized machines to automate the welding process. This can improve welding efficiency and reduce labor intensity to some extent. However, due to the thin plate specifications, which are mostly 1-3mm thick, problems such as misaligned splicing, skewing, large welding deformation, and unsatisfactory welding quality easily occur.

[0063] Therefore, this application provides an adaptive composite welding device for thin plate splicing, which aims to optimize the splicing welding process to a certain extent, improve the centering splicing quality, welding operation stability, and weld detection accuracy, so as to improve the overall quality of thin plate splicing welding, while also improving welding efficiency and reducing labor intensity.

[0064] See Figure 1 , Figure 2 and Figure 3In this embodiment of the application, the thin plate splicing adaptive composite welding device includes: a frame 100 and a welding host 200, a piano key pressing mechanism 300, a positioning and centering mechanism 400, an anti-misalignment mechanism 500, a laser detection mechanism 600 and a control host 700 disposed on the frame 100.

[0065] The frame 100 serves as the supporting foundation for the entire device, used to install and support the aforementioned components and the thin plates to be welded. Correspondingly, the frame 100 is provided with a conveyor roller 110 for moving the thin plates. Furthermore, a welding area for performing welding operations can be planned and set in the spreading area of ​​the conveyor roller 110. Correspondingly, the splicing gaps of the spliced ​​thin plates can also be set in this welding area.

[0066] The welding host 200 is used to perform welding operations and can be correspondingly set in the welding area. It can move along the splicing gap and perform welding operations synchronously. Correspondingly, the piano key pressing mechanism 300 can also be set above the welding area of ​​the conveyor roller 110 to press the welding part of the thin plate to be welded, thereby suppressing deformation defects in the thin plate welding process and improving welding quality. Specifically, the piano key pressing mechanism 300 can press the splicing edge of the thin plate to be welded at equal intervals along the splicing gap.

[0067] The positioning and centering mechanism 400 is used to perform positioning and centering operations on thin plates during splicing. Specifically, the positioning and centering mechanism 400 is vertically and flexibly positioned below the welding area of ​​the conveyor roller 110, so that it rises above the conveyor roller 110 during thin plate centering to stop and position the thin plate, thus achieving centering and positioning. Specifically, after the first thin plate to be spliced ​​passes through the welding area along the conveyor roller 110, it should move in the opposite direction with the cooperation of the conveyor roller 110 and stop at the preset splicing and welding position. Therefore, when the first thin plate moves in the opposite direction, the positioning and centering mechanism 400 rises, protruding from the top of the conveyor roller 110, stopping the edge of the first thin plate moving in the opposite direction, and stopping it at the preset welding position. After the first thin plate stops, the positioning and centering mechanism 400 descends below the conveyor roller 110, leaving space for the second thin plate moving along the conveyor roller 110.

[0068] The anti-misalignment mechanism 500 is used to prevent misalignment, overlap, and edge misalignment when two thin plates are spliced. The anti-misalignment mechanism 500 can be set in the welding area above the conveyor roller 110 to press down the first thin plate that has been aligned and is stopped at the welding position when the thin plates are spliced. Specifically, it can press down the edge of the first thin plate so that it will not warp under the impact of the second thin plate following the conveyor roller 110, thereby avoiding misalignment, overlap, and other phenomena. This allows the edges of the two thin plates to be well spliced, maintaining a stable and uniform weld gap, which helps to improve welding quality, reduce welding deformation, reduce the workload of correction operations, and improve welding operation efficiency.

[0069] The laser inspection mechanism 600 is used to detect the joint gap between two thin plates after splicing, i.e., the weld specifications, thereby facilitating the welding host 200 to perform automatic welding according to appropriate welding parameters, maintaining the stability of welding quality, and improving the quality of automatic welding. Correspondingly, the inspection area of ​​the laser inspection mechanism 600 can be set in the welding area of ​​the conveyor roller 110 to detect the gap between the two spliced ​​thin plates with high quality. Generally, the laser inspection mechanism 600 mainly detects the size of the weld, thereby adjusting parameters such as the welding current range, arc voltage range, laser power, oscillation amplitude, oscillation frequency, and welding speed accordingly.

[0070] The control host 700 serves as the central control device for implementing the above-mentioned splicing, inspection, welding, and other processes, and coordinates and controls these processes in an orderly manner. Therefore, the control host 700 is connected to the welding host 200, the piano key clamping mechanism 300, the positioning and centering mechanism 400, the anti-misalignment mechanism 500, and the laser inspection mechanism 600, respectively, to coordinate and control the centering and splicing of the thin plates, the detection of splicing gaps, and the clamping and welding of the thin plates.

[0071] The thin-plate splicing adaptive composite welding device provided in this application embodiment is based on a frame and equipped with a conveyor roller conveyor as a moving carrier for conveying and centering the thin plates, realizing the movement and centering splicing operations of the thin plates; a welding area is planned on the conveyor roller conveyor as the area for performing welding operations; and a positioning and centering mechanism is set below the welding area. During the thin-plate splicing and centering process, after the first thin plate moves along the conveyor roller conveyor through the welding area, the positioning and centering mechanism rises above the conveyor roller conveyor, stopping and positioning the edge of the first thin plate to be spliced ​​on the reverse-moving and positioned side. Then, the edge to be spliced ​​is pressed by the anti-misalignment mechanism set above the welding area. The positioning and centering mechanism descends and resets, allowing the second sheet to move along the conveyor rollers towards the first sheet, abutting against the splicing edge of the first sheet. This enables high-quality sheet alignment and splicing, reducing the risk of misalignment. After splicing, the welding section of the first and second sheets can be pressed together by a key-pressing mechanism. A laser detection mechanism detects the splicing gap specifications, allowing the control host to drive the welding host to perform welding operations along the splicing gap according to the specifications. This improves splicing quality, accurately detects the splicing gap specifications, stably presses the sheets, improves overall welding deformation, optimizes welding quality, and enhances the efficiency of splicing and welding operations through automation.

[0072] See Figure 4 and Figure 5 In some embodiments, the welding host 200 may employ a laser + gas shielded composite welding process. Accordingly, the welding host 200 may include a laser gas shielded composite welding machine 210 and a track moving mechanism 220.

[0073] The track moving mechanism 220 serves as a transport mechanism for moving the laser gas shielded composite welding machine 210 along the weld seam. It can be mounted on the frame 100 and moves synchronously with the laser gas shielded composite welding machine 210 when it performs welding operations to facilitate the completion of long weld seams.

[0074] In some embodiments, the laser inspection mechanism 600 may employ laser measuring equipment such as a 3D line laser measuring instrument to accurately measure the specifications of the spliced ​​weld seam, so as to formulate corresponding welding parameters and maintain stable welding quality.

[0075] In some embodiments, three welding modes can be defined according to the specifications of the weld seam. That is, three sets of laser + mixed gas shielded composite welding process parameters are designed for different splicing gaps of 0-0.5mm, 0.5-1mm, and 1-1.5mm, so as to adjust the welding parameters according to different welding gaps to achieve single-sided welding and double-sided forming of thin plates.

[0076] For gaps of 0-0.5mm, the parameters for mixed gas shielded welding are designed as follows: welding current range (120~140) A, arc voltage range (17~20) V, and gas composition of 80% Ar+CO2. The parameters for laser welding are designed as follows: laser power of 2000W-4000W, optical oscillation amplitude of 0-3mm, and oscillation frequency of 80 Hz. Welding speed range is (1500~2400) mm / min.

[0077] For gaps of 0.5-1mm, the parameters for mixed gas shielded welding are designed as follows: welding current range (140~160) A, arc voltage range (18~21) V, and gas composition of 80% Ar+CO2. The parameters for laser welding are designed as follows: laser power of 2000W-4000W, optical oscillation amplitude of 0-3mm, and oscillation frequency of 80 Hz. Welding speed range is (1500~2400) mm / min.

[0078] For gaps of 1-1.5mm, the parameters for mixed gas shielded welding are designed as follows: welding current range (150~170)A, arc voltage range (20~22)V, and gas usage of 80%Ar+CO2; the parameters for laser welding are designed as follows: laser power of 2000W-4000W, optical oscillation amplitude of 0-3mm, and oscillation frequency of 80Hz. Welding speed range is (1500~2400)mm / min.

[0079] See Figure 6 , Figure 7 and Figure 8 In some embodiments, the positioning and centering mechanism 400 may include: a mounting base 410, a rotary drive cylinder 420, a rotary seat 430, a rotary table 440, a lifting bracket 450, a lifting cylinder 460, a guide cylinder 470, a lifting shaft 472, and a positioning stop arm 480.

[0080] The mounting base 410 serves as the installation foundation for the entire device, supporting other components on one hand and being installed on the site platform or foundation on the other, thereby achieving stable installation and fixation of the entire device.

[0081] The rotary seat 430 is fixed on the mounting base 410, the rotary disk 440 is rotatably disposed within the rotary seat 430, the cylinder body of the rotary drive cylinder 420 is fixed on the mounting base 410, and the rotation shaft 431 of the rotary drive cylinder 430 is connected to the rotary disk 440 to drive the rotary disk 440 to rotate within the rotary seat 430, forming a rotary mechanism based on the mounting base 410.

[0082] The lifting bracket 450 serves as the foundation of the lifting structure, is fixed on the turntable 440, and supports the lifting structure components, thereby enabling the lifting structure to rotate as a whole. The guide cylinder 470 is fixed on the lifting bracket 450, and the lifting shaft 472 is movably disposed within the guide cylinder 470 along its axial direction. The lifting shaft 472 is coaxially arranged with the rotating shaft 431, allowing the lifting shaft 472 to rotate in place and move axially. Generally, the direction of movement of the lifting shaft 472 can be set to vertical lifting and lowering.

[0083] The lifting cylinder 460 serves as a lifting power element, with its cylinder body fixed on the lifting bracket 450. The piston rod 461 of the lifting cylinder 460 is connected to the lifting shaft 472 to push the lifting shaft 472 to slide within the guide cylinder 470. The limiting function of the guide cylinder 470 enables stable and reliable directional movement, restricts other-direction swinging, and resists the impact of thin plates.

[0084] The positioning arm 480, serving as a component that directly contacts and stops the edge of the first thin plate, is fixed on the lifting shaft 472. It rises, falls, and deflects with the lifting shaft 472, thereby being raised above the thin plate moving roller conveyor and deflected to face the edge of the thin plate. Specifically, the stop positioning and centering can be achieved by passing the positioning arm 480 parallel to the weld seam clearance area of ​​the welding machine along the weld seam length direction, and then deflecting it 90 degrees to point towards the edge of the thin plate.

[0085] Generally, the positioning and centering mechanism 400 can be set below the roller conveyor of the welding machine, and can be specifically set at a certain distance from the preset weld seam area, so as to avoid the influence of high temperature and welding combustion inclusions during the welding process. By adjusting the length of the positioning arm 480, it can be ensured that the edge of the first thin plate can be stopped at the preset welding position; at the same time, it can also prevent the thin plate splicing positioning and centering mechanism from affecting the welding operation.

[0086] The positioning and centering mechanism provided in this application forms an integrated structure that can rotate and lift by forming a rotatable mechanism and a lifting mechanism located on it. This structure enables the lifting and deflection of the positioning arm. When the positioning and centering mechanism is set on a welding machine, it can automatically and reliably raise the positioning arm to the corresponding height of the preset weld area according to the set parameters, and deflect the positioning arm to point towards the first thin plate to be spliced. This allows the edge of the first thin plate to be welded to be accurately stopped at the preset position. Compared with manual operation of positioning blocks and squares, this mechanism can significantly reduce positioning and centering errors and is highly efficient and reliable. Meanwhile, considering the narrow welding area of ​​the welding machine and the high precision requirements of the preset welding position of the thin plate, in order to balance the proper storage of the positioning and centering mechanism and the positional accuracy of stopping the first thin plate, a structure with a liftable lifting shaft and a deflectable positioning arm is used. The positioning arm can be raised above the track parallel to the weld length direction through the weld clearance reserved on the roller conveyor of the welding machine, and then deflected to point towards the first thin plate to achieve positioning and stopping. When storing, the positioning arm can be deflected to make it parallel to the weld length direction, and then lowered below the roller conveyor for storage.

[0087] See Figure 3 In some embodiments, in order to ensure the posture of the positioning arm 480 and enable its edge to stably contact the edge of the stop plate, the positioning and centering mechanism 400 may also be provided with a slewing bearing 490; specifically, the inner ring 492 of the slewing bearing 490 is sleeved on the turntable 440, and the outer ring 491 of the slewing bearing 490 is fixed in the turntable 430, so that the slewing bearing 490 can be used to realize the rotation of the turntable 440 in place and restrict its swing in other directions.

[0088] In some embodiments, the slewing bearing 490 can be configured as a ball bearing, utilizing the differential rotation of the inner and outer rings to maintain a stable rotational posture of the turntable 440. Of course, other types of bearings are not excluded, and this embodiment does not impose any limitations.

[0089] In some embodiments, in order to limit the overall or partial tilting of the turntable 440 along its axial direction, a first support 432 is provided inside the turntable 430, a second support 441 is provided on the outer side wall of the turntable 440, the outer ring of the slewing bearing 490 rests on the first support 432 and is pressed by a clamping limit ring 431, and the inner ring of the slewing bearing 490 rests on the second support 441, thereby using the cooperation of the inner and outer rings to limit the position of the turntable 440.

[0090] Generally, the radial width of the clamping limit ring 431 can cover the area between the inner and outer rings of the slewing bearing 490, or be slightly larger, to prevent debris from entering and maintain the smooth operation and service life of the bearing.

[0091] In some embodiments, a clamping boss 431a may be provided on the clamping limiting ring 431 to press against and clamp the outer ring 491, and to maintain a certain gap between the clamping limiting ring 431 and other parts of the rotary bearing 490, so as to avoid affecting the movement of the inner ring 492 and the ball.

[0092] In some embodiments, considering that there will be a certain degree of sliding frictional contact between the rotary table 440 and the rotary seat 430, in order to reduce wear and the impact on the rotation amplitude, a self-lubricating material layer can be provided on the two surfaces of the rotary table 440 and the rotary seat 430 that are in contact, so as to reduce the coefficient of friction and the degree of wear, and reduce the impact of friction on the rotation posture of the rotary table 440.

[0093] In some embodiments, the mounting base 410 may be configured as an upper, middle and lower layer assembly structure consisting of an upper mounting platform 411, a mounting bracket 412 and a lower mounting platform 413; wherein the upper mounting platform 411 is used to fix the rotary seat 430 and has a hole for the rotation shaft 421 of the rotary drive cylinder 420 to pass through; the lower mounting platform 413 is used to be mounted on the mounting base of the welding machine; and the mounting bracket 412 supports and connects the upper mounting platform 411 and the lower mounting platform 413 to form a stable frame structure, providing sufficient installation and operation space for the rotary drive cylinder 420.

[0094] See Figure 2 and Figure 3 In some embodiments, the guide cylinder 470 serves as a guide and limiting structure for the lifting shaft 472, and includes a cylinder body and a mounting flange 471 disposed on the cylinder body; the cylinder body is well adapted to the lifting shaft 472, maintaining a small sliding gap and limiting the swing amplitude.

[0095] The mounting flange 471 is fixed to the lifting bracket 450 by fasteners.

[0096] In some embodiments, a stop groove can be provided on the inner wall of the cylinder along the axial direction of the lifting shaft 472, and a stop boss is provided on the outer wall surface of the lifting shaft 472 along the axial direction of the lifting shaft 472. The stop boss is embedded in the stop groove to restrict the rotation of the lifting shaft 472, so as to maintain the reliability of the position and attitude of the positioning arm 480.

[0097] In other embodiments, to improve the flexibility of adjusting the height position of the lifting shaft 472, a screw hole can be provided on the lifting shaft 472, and the screw hole is coaxially arranged with the lifting shaft 472. The piston rod 461 is screwed into the screw hole, and the height position of the lifting shaft 472 relative to the lifting bracket 450 can be achieved by rotating the lifting shaft 472. On the other hand, a threaded connection structure can also be used to improve the reliability of fixing the lifting shaft 472.

[0098] See Figure 2 and Figure 3 In some embodiments, the lifting bracket 450 serves as a static bracket for supporting the lifting cylinder 460, the guide cylinder 470, and other related moving parts.

[0099] The lifting bracket 450 can be specifically configured as a three-layer splicing bracket structure consisting of an upper support platform 451, a bracket body 452, and a lower support platform 453; wherein, the upper support platform 451 is used to support and fix the guide cylinder 470, the lower support platform 453 is used to fix and connect to the turntable 440, and the bracket body 452 is connected and supported between the support platform 451 and the lower support platform 453 to form a frame structure and fix the lifting cylinder 460.

[0100] In some embodiments, in order to balance the stopping effect with minimal damage to the edge of the thin plate, the end of the positioning arm 480 away from the lifting shaft 472 is provided with a contact arc surface 481; the arc surface adapts to the deflection process of the positioning arm 480, avoiding scraping or even lifting the edge of the thin plate when the positioning arm 480 is retracted, thereby reducing the adverse impact on the quality of splicing and welding.

[0101] In some embodiments, in order to improve the reliability of fixing the positioning arm 480, a positioning through hole is provided at one end of the positioning arm 480 near the lifting shaft 472, and a positioning boss is provided on the end face of the lifting shaft 472. The positioning boss is embedded in the positioning through hole, and the positioning arm 480 is stably fixed by means of sleeve connection.

[0102] In some embodiments, the positioning through hole can be set as a countersunk hole, and a clamping member 473 is provided in the countersunk hole. The clamping member 473 is fixed on the positioning boss by a fastener 474 and presses the positioning stop arm 480 on the lifting shaft 472, further enhancing the fastening effect. The countersunk hole structure reduces the spatial specifications of the fixing structure of the positioning stop arm 480 and reduces the risk of interference with the surrounding environment.

[0103] In some embodiments, the positioning boss can be configured as a polygon or irregular structure to achieve an anti-rotation effect and restrict the rotation of the positioning stop arm 480 relative to the lifting shaft 472.

[0104] Another aspect of this application embodiment provides a thin plate welding machine configured with the above-described positioning and centering mechanism.

[0105] Specifically, the positioning and centering mechanism can be positioned below the thin plate conveying rollers and near or within the weld seam avoidance zone, so that the lifting shaft 472 and the positioning stop arm 480 can extend above the rollers and point towards the edge of the thin plate to be welded. When the first thin plate passes through the weld seam area, the positioning and centering mechanism extends and deflects, causing the positioning stop arm 480 to point towards the thin plate, and the base arc surface 481 of the positioning stop arm 480 to be located at a preset position, stopping the first thin plate.

[0106] Once the positioning and alignment are completed, the positioning arm is deflected 480 degrees and then lowered below the roller conveyor for storage, ready for the next use.

[0107] The entire process can be manually controlled or automatically detected and executed by the on-site control system of a welding machine.

[0108] Of course, in order to improve the efficiency and reliability of positioning and centering, multiple positioning and centering mechanisms can be set, such as four or five; or the number can be flexibly set according to the actual length of the weld seam of the thin plate.

[0109] See Figure 9 , Figure 10 and Figure 11 The anti-misalignment mechanism 500 includes: a base 511, a push-pull mechanism 512, and a pressing element 513.

[0110] The base 511 serves as the foundation for the device, supporting the installation of other components and enabling the entire device to be installed onto a site foundation or equipment.

[0111] The push-pull mechanism 512 is mounted on the base 511 and serves as a drive mechanism to apply a pushing or pulling action. In this embodiment, the push-pull mechanism 512 is connected to the pressing member 513 to push the pressing member 513 to press the edge of the first steel sheet that is in place, pressing it onto the splicing welding pad, thereby keeping its edge in a stable alignment posture before splicing and limiting the warping of the first steel sheet. This reduces or even avoids the risk that the first steel sheet in place will be warped by the impact of the incoming steel sheet and stacked under the first steel sheet.

[0112] To prevent the second thin steel plate from impacting and stacking above the first thin steel plate that is positioned in place, a pressing part 513c can be provided on the pressing member 513 to press the first thin steel plate that is positioned in place. A guide part 513c1 connected to the pressing part 513c is provided on the pressing member 513 to guide the movement of the edge of the second thin steel plate and finally abut against the pressing part, and is restricted between the pressing part and the splicing welding pad, so as to splice and align with the edge of the steel plate that is positioned in place, without the situation of upward warping and misalignment.

[0113] During on-site installation, the guide part 513c1 is closer to the second thin steel plate than the pressing part 513c. That is, along the material movement direction of the second thin steel plate, the guide part 513c1 is closer to the second thin steel plate, thereby enabling the constraint and limiting of the material movement and the guidance and centering splicing.

[0114] The anti-misalignment welding device uses a base as the installation foundation and sets up a push-pull mechanism. A pressing element is connected to the push-pull mechanism to drive the pressing part of the pressing element to press the edge of the thin steel plate that is already in place in the splicing area between the two thin steel plates to be spliced, preventing it from warping due to impact during splicing. On the other hand, a guide part is set on the pressing element to guide the movement of the incoming thin steel plate between the two thin steel plates to be spliced ​​and to restrain the warping during the process, so that it can smoothly enter the gap between the pressing part and the pad, and be spliced ​​and aligned with the edge of the stationary thin steel plate. This can stably and reliably limit the warping and misalignment of the thin steel plate, automatically implement the error correction operation, and reduce the damage to the thin steel plate to a certain extent.

[0115] In some embodiments, the guide portion 513c1 includes a guide surface formed on the pressing member 513, which can stably contact the edge of the second thin steel plate and move smoothly along the guide surface until it abuts against the pressing portion 513c and is aligned with the edge of the first thin steel plate that is in place.

[0116] In some embodiments, the guide surface may be configured as a guide ramp or a guide arc surface. Generally, the end of the guide ramp or the guide arc surface closer to the second thin steel plate is higher than the edge height of the second thin steel plate, so as to constrain and limit its upturn height.

[0117] In some embodiments, to reduce the spatial density of the device structure and reduce mutual interference, the pressing element 513 can be configured as a combination of a pressing seat 513a and a connecting arm 513b; wherein, the pressing seat 513a is connected to the push-pull mechanism 512 to obtain a push-pull force; the connecting arm 513b serves as a direct pressing element, with its first end connected to the pressing seat 513a to obtain a push-pull force, and the pressing part 513c and the guide part 513c1 are disposed at the second end of the connecting arm 513b, directly pressing the edges of the first and second thin steel plates under the action of the push-pull mechanism 512 to maintain the quality of the weld.

[0118] In some embodiments, the connecting arm 513b is inclinedly connected to the pressure seat 513a, that is, the connecting arm 513b is bent relative to the pressure seat 513a, forming a certain clearance space. Thus, the moving area of ​​the connecting arm 513b leaves a certain clearance space in the moving direction of the pressure seat 513a and the driving mechanism 512, avoiding interference with other equipment in the welding area, such as welding torches and their auxiliary mechanisms, and ensuring the smoothness of related operations.

[0119] Generally, the pressing seat 513a can be configured as a long rod-shaped element, and its moving direction can be set along its long axis. The connecting arm 513b can also be configured as a long rod, and its long axis is at an angle of 513e degrees to the long axis of the pressing element 513a, or fluctuates within a range of 15 degrees above and below, i.e., 512 degrees to 515 degrees.

[0120] In some embodiments, the pressure seat 513a and the connecting arm 513b may be configured to be bent from a single rod.

[0121] In some embodiments, to further reduce the risk of interference between the anti-misalignment mechanism 500 and the welding area mechanism, the pressing member 513 is also provided with a parallel first link 513d and a second link 513e; one end of the first link 513d and the second link 513e are hinged to the base 511, and the other end is hinged to the pressing seat 513a. The sequential connection of the hinge points at both ends of the first link 513d and the second link 513e forms a parallelogram, thereby maintaining the stability of its overall posture in the direction of its long axis and being able to move stably in the direction perpendicular to its long axis, thereby ensuring the pressing effect. At the same time, it can also reduce the risk of interference with the welding components by moving in the direction perpendicular to its long axis to avoid lateral movement.

[0122] In some embodiments, the push-pull mechanism 512 may include a drive cylinder, the cylinder body of which is hinged to the base 511, and the cylinder rod of which is connected to the pressure seat 513a to achieve push-pull drive.

[0123] Generally, since the pressing element 513 has displacement along the long axis of the pressing seat 513a and in the direction perpendicular to the long axis of the pressing seat 513a, the cylinder body of the drive cylinder can be hinged to the base 511 to adapt to the arc trajectory of the pressing seat 513a.

[0124] Typically, the base 511 can be configured as a combination of a base plate 511a and a hinge seat 511b. The hinge seat 511b can be fixed on the base plate 511a and serves as a movable mounting base for the drive cylinder.

[0125] See Figure 9 , Figure 10 and Figure 11 In some embodiments, the base 511 or the base plate 511a is provided with a positioning buckle 514, which can be aligned and fixed with the mounting beam 521 of the supporting body 520 so as to facilitate installation by fasteners, such as bolts.

[0126] In some embodiments, shock-absorbing pads 515 may also be provided on the base 511 or the base plate 511a to reduce the impact of the thin steel plate.

[0127] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0128] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0129] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly. In this application, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "fixed" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction relationship between two components, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances. In addition, the descriptions involving "first," "second," etc., in this application are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" or "second" may explicitly or implicitly include one or more of the aforementioned features. In the description of this application, "multiple" means two or more, unless otherwise explicitly and specifically limited.

[0130] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0131] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0132] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A thin-plate splicing adaptive composite welding device, characterized in that, include: The frame and the welding host, piano key clamping mechanism, positioning and centering mechanism, anti-misalignment mechanism, laser detection mechanism and control host installed on the frame; The frame is provided with a conveyor roller track, and the conveyor roller track area is provided with a welding area; The welding host and the piano key pressing mechanism are arranged above the welding area of ​​the conveyor roller to cooperate in pressing the thin plate to be welded and performing the welding operation; The positioning and centering mechanism is vertically and flexibly disposed below the welding area of ​​the conveyor rollers, so that it rises above the conveyor rollers when the thin plate is centered, and stops and positions the thin plate. The anti-misalignment mechanism is installed in the welding area to press down a thin plate that has been aligned during the alignment and splicing of thin plates. The detection area of ​​the laser detection mechanism is set in the welding area to detect the gap between the two thin plates being spliced. The control host, the welding host, the piano key clamping mechanism, the positioning and centering mechanism, the anti-misalignment mechanism, and the laser detection mechanism coordinate and control the centering and splicing of the thin plates, the splicing gap detection, and the clamping and welding of the thin plates.

2. The thin-plate splicing adaptive composite welding device as described in claim 1, characterized in that, The welding host includes a laser gas shielded composite welding machine and a track moving mechanism; The track moving mechanism is mounted on the frame, and the laser gas shielded composite welding machine is mounted on the track moving mechanism.

3. The thin-plate splicing adaptive composite welding device as described in claim 1, characterized in that, The positioning and centering mechanism includes: a mounting base, a rotary drive cylinder, a rotary seat, a rotary table, a lifting bracket, a lifting cylinder, a guide cylinder, a lifting shaft, and a positioning stop arm; The rotary seat is fixed on the mounting base, the rotary disk is rotatably disposed in the rotary seat, the cylinder body of the rotary drive cylinder is fixed on the mounting base, and the rotation shaft of the rotary drive cylinder is connected to the rotary disk to drive the rotary disk to rotate in the rotary seat. The lifting bracket is fixed on the rotary table, the guide cylinder is fixed on the lifting bracket, and the lifting shaft is movably disposed in the guide cylinder along its axial direction, and the lifting shaft is coaxial with the rotating shaft. The cylinder body of the lifting cylinder is fixed on the lifting bracket, and the piston rod of the lifting cylinder is connected to the lifting shaft to push the lifting shaft to slide inside the guide cylinder; The positioning arm is fixed on the lifting shaft.

4. The thin-plate splicing adaptive composite welding device as described in claim 3, characterized in that, The positioning and centering mechanism also includes: a slewing bearing; The inner ring of the slewing bearing is fitted onto the slewing disc, and the outer ring of the slewing bearing is fixed inside the slewing seat.

5. The thin-plate splicing adaptive composite welding device as described in claim 4, characterized in that, The rotary seat is provided with a first support platform, and the outer side wall of the rotary table is provided with a second support platform; The outer ring of the slewing bearing rests on the first bearing platform and is pressed by a clamping and limiting ring; The inner ring of the slewing bearing rests on the second bearing platform.

6. The thin-plate splicing adaptive composite welding device as described in claim 3, characterized in that, The guide cylinder includes a cylinder body and a mounting flange disposed on the cylinder body; The mounting flange is fixed to the lifting bracket by fasteners.

7. The thin-plate splicing adaptive composite welding device as described in claim 3, characterized in that, The lifting shaft has a screw hole, and the screw hole is coaxial with the lifting shaft. The piston rod is screwed into the screw hole. The end of the positioning arm away from the lifting shaft has a contact arc surface; The positioning arm has a positioning through hole at one end near the lifting shaft, and a positioning boss is provided on the end face of the lifting shaft, the positioning boss being embedded in the positioning through hole; The positioning through hole is a countersunk hole, and a clamping member is provided in the countersunk hole. The clamping member is fixed on the positioning boss by fasteners and presses the positioning stop arm on the lifting shaft.

8. The thin-plate splicing adaptive composite welding device as described in claim 1, characterized in that, The anti-misalignment mechanism includes: a base, a push-pull mechanism, and a pressing element; The push-pull mechanism is mounted on the base and is connected to the pressing member to push the pressing member to press the edge of the thin steel plate into place. The pressing member is provided with a pressing part and a guiding part. The guiding part is connected to the pressing part to guide the edge of the incoming steel sheet to abut against the pressing part and the edge of the steel sheet that is in place.

9. The thin-plate splicing adaptive composite welding device as described in claim 8, characterized in that, The pressing element includes: a pressing seat, a connecting arm, a first connecting rod, and a second connecting rod; The pressing seat is connected to the push-pull mechanism, the first end of the connecting arm is connected to the pressing seat, and the pressing part and the guide part are disposed at the second end of the connecting arm; One end of the first connecting rod and the second connecting rod are hinged to the base, and the other end is hinged to the pressure seat. The first connecting rod and the second connecting rod are parallel, and the lines connecting the hinge points at both ends of the first connecting rod and the second connecting rod in sequence form a parallelogram.

10. The thin-plate splicing adaptive composite welding device as described in claim 9, characterized in that, The push-pull mechanism includes a drive cylinder, the cylinder body of which is hinged to the base, and the cylinder rod of which is connected to the pressure seat.

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