An intelligent welding production line

Abstract

The application discloses an intelligent welding production line, which comprises a workbench and further comprises a length checking station, a manual assembly spot welding station, an excessive placement station and a plurality of parallel arranged positioner welding stations arranged in sequence along the extension direction of the workbench, and an AGV carrying trolley for carrying the I-beams between the stations; the length checking station comprises a transverse conveying assembly for transversely conveying the I-beams and a longitudinal conveying assembly for longitudinally conveying and checking the I-beams. The application realizes the rapid and batch checking of the length and key dimensions of the I-beams through the automatic conveying and checking system, avoids the unqualified raw materials from entering the welding process, and improves the production efficiency and quality consistency.

Description

Technical Field

[0001] This invention relates to the field of steel structure welding technology, specifically to an intelligent welding production line. Background Technology

[0002] In the field of steel structure manufacturing, especially in the production of I-beam components for bridge construction, various connecting plates, reinforcing ribs and other accessories need to be welded to specific positions on the I-beams. Currently, manual welding is the most common method. On the one hand, manual welding is slow, and the quality of the welds is greatly affected by the worker's skills and condition, making it difficult to ensure the consistency of large batches of products. When faced with I-beams of different specifications and welding positions, production line adjustments are slow and it is difficult to respond quickly to changes in orders. On the other hand, before welding, there is a lack of rapid and automated batch inspection of the length and key dimensions of multiple I-beam components, resulting in unqualified raw materials entering the welding process, causing waste and rework. In addition, existing production lines often isolate manual labor from automated equipment, making it impossible to achieve efficient and safe human-machine collaborative operation. Complex or special processes still need to rely entirely on manual labor, while robots cannot be fully utilized for simple repetitive processes. Therefore, there is an urgent need for an intelligent welding production line that can achieve automated welding, intelligent inspection, and efficient human-machine collaboration.

[0003] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is the closest prior art. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent welding production line to solve the problems of low welding efficiency, lack of automatic inspection, and low degree of human-machine collaboration in the prior art mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A smart welding production line includes a workbench and also includes: The workbench is arranged in sequence along its extension direction as follows: a length inspection station, a manual assembly spot welding station, a transition placement station, and multiple positioner welding stations arranged side by side, as well as an AGV transport vehicle for transporting I-beams between the stations. The length inspection station includes a transverse conveying assembly for transversely conveying the I-beams, and a longitudinal conveying assembly for longitudinally conveying and verifying the I-beams.

[0006] Furthermore, the lateral conveying assembly includes a first conveying chain; A second conveyor chain is disposed on one side of the first conveyor chain and is connected to the first conveyor chain in a driving manner; A transverse drive motor is provided at the lower part of the first conveyor chain to drive the first conveyor chain and the second conveyor chain to perform synchronous transmission. A drive shaft is provided between the transverse drive motor and the first and second conveyor chains.

[0007] Furthermore, the longitudinal conveying component includes a conveyor table; A drive chain installed on the upper part of the conveyor platform; And a longitudinal drive motor for driving the drive chain for transmission; The drive chain is used to drive the rollers to longitudinally straighten the I-beam; A worm gear drive motor is installed at the lower middle part of the conveyor table; The drive end of the worm gear drive motor is connected to a worm gear transmission shaft, which is used to drive the worm gear jack mounted on the upper part of the workbench to move up and down.

[0008] Furthermore, the length calibration station is also equipped with a front-end locator and an intermediate locator for detecting the length of the I-beam; The front-end positioner and the intermediate positioner are equipped with encoders.

[0009] Furthermore, the AGV transport vehicle includes a transport track and a telescopic arm for receiving and releasing the I-beam.

[0010] Furthermore, two manual assembly spot welding stations are set up on the production line.

[0011] Furthermore, the positioner welding station is configured with four stations; Each of the positioner welding stations is equipped with a welding robotic arm, and the front end of the welding robotic arm is equipped with a three-dimensional camera for weld seam recognition and positioning.

[0012] Furthermore, the over-placement station is equipped with a chain for storing and transporting I-beams.

[0013] Furthermore, the production line also includes a side-turning machine for working with the AGV transport vehicle to remove the I-beams after welding.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention enables rapid, batch inspection of the length and key dimensions of I-beams through an automated conveying and verification system, preventing unqualified raw materials from entering the welding process and improving production efficiency and quality consistency.

[0015] 2. By setting up multiple positioner welding stations and AGV transport vehicles, this invention achieves automated welding and high-efficiency human-machine collaboration, reduces manual intervention, and improves welding speed and accuracy.

[0016] 3. By setting up an over-placement station, this invention solves the problem of H-beams queuing up when the positioner welding station is fully loaded, thus improving the flexibility and adaptability of the production line. Attached Figure Description

[0017] Figure 1 This is a top view of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the length calibration station of the present invention; Figure 4 For the present invention in Figure 3 Enlarged view of point A in the middle.

[0018] Reference numerals: 100, Workbench; 1, Length calibration station; 11, Lateral conveyor assembly; 111, First conveyor chain; 112, Second conveyor chain; 113, Lateral drive motor; 114, Drive shaft; 12, Longitudinal conveyor assembly; 121, Conveyor table; 122, Drive chain; 123, Roller; 124, Front-end positioner; 125, Longitudinal drive motor; 126, Worm gear drive motor; 127, Worm gear conveyor shaft; 128, Worm gear lifter; 129, Intermediate positioner; 1291, Encoder; 2, Manual assembly spot welding station; 3, Transition placement station; 4, Positioner welding station; 5, AGV transport trolley; 51, Transport track; 52, Telescopic arm. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-4 The present invention provides a technical solution: A smart welding production line includes a workbench 100, and also includes: The length inspection station 1, the manual assembly spot welding station 2, the transition placement station 3 and the multiple positioner welding stations 4 arranged side by side are arranged sequentially along the extension direction of the workbench 100, as well as the AGV transport trolley 5 used to transport the I-beams between the stations. The length inspection station 1 includes a transverse conveying assembly 11 for transversely conveying the I-beams, and a longitudinal conveying assembly 12 for longitudinally conveying and verifying the I-beams.

[0021] As an improvement, such as Figure 3 As shown, the lateral conveying assembly 11 includes a first conveying chain 111; A second conveyor chain 112 is disposed on one side of the first conveyor chain 111 and is connected to the first conveyor chain 111 in a driving manner; A transverse drive motor 113 is provided at the lower part of the first conveyor chain 111 to drive the first conveyor chain 111 and the second conveyor chain 112 to perform synchronous transmission. A transmission shaft 114 is provided between the transverse drive motor 113 and the first transmission chain 111 and the second transmission chain 112.

[0022] Furthermore, such as Figure 3 As shown, the longitudinal conveying assembly 12 includes a conveyor table 121; A drive chain 122 is installed on the upper part of the conveyor 121; And a longitudinal drive motor 125 for driving the drive chain 122 for transmission; The drive chain 122 is used to drive the roller 123 to longitudinally correct the I-beam; A worm gear drive motor 126 is installed at the lower middle part of the conveyor table 121; The drive end of the worm gear drive motor 126 is connected to the worm gear transmission shaft 127, which is used to drive the worm gear lifter 128 installed on the upper part of the workbench 100 to move up and down.

[0023] Furthermore, such as Figure 1-2 As shown, the length inspection station 1 is also equipped with a front-end locator 124 and an intermediate locator 129 for detecting the length of the I-beam. The front-end positioner 124 and the intermediate positioner 129 are equipped with encoders 1291.

[0024] As an improvement, the AGV transport vehicle 5 includes a transport track 51 and a telescopic arm 52 for receiving and releasing the I-beam.

[0025] Furthermore, the manual assembly spot welding station 2 is set up in two on the production line.

[0026] Furthermore, the positioner welding station 4 is configured to have four stations; Each of the positioner welding stations 4 is equipped with a welding robotic arm, and the front end of the welding robotic arm is equipped with a three-dimensional camera for weld seam recognition and positioning.

[0027] As an improvement, such as Figure 2 As shown, the overlay station 3 is equipped with a chain for storing and transporting I-beams.

[0028] Furthermore, the production line also includes a side-turning machine for working with the AGV transport vehicle 5 to remove the I-beams after welding.

[0029] It should be noted that, in the specific implementation of this invention, such as Figure 1-4 As shown, firstly, the theoretical models of all different types of I-beams are input into the system, and the I-beams are transported to the length calibration station 1 by other handling equipment. The length of the I-beams is obtained by the encoder 1291 on the front end positioner 124 and the middle positioner 129 and matched with the theoretical model, so that the midpoint of the length of the I-beams is aligned. Then, the I-beams are moved laterally to the front end of the AGV handling trolley 5 by the lateral conveying component 11. like Figure 3 As shown, the length inspection station 1 includes a transverse conveying assembly 11 for transversely conveying the I-beams and a longitudinal conveying assembly 12 for longitudinally conveying the I-beams. The transverse conveying assembly 11 includes a first conveying chain 111, a second conveying chain 112 disposed on one side of the first conveying chain 111 and connected to the first conveying chain 111 in a transmission manner, and a transverse drive motor 113 disposed at the lower part of the first conveying chain 111 for synchronously driving the first conveying chain 111 and the second conveying chain 112 in a transmission manner. A drive shaft 114 is provided between the transverse drive motor 113 and the first conveying chain 111 and the second conveying chain 112. like Figure 1-3 As shown, the length detection station 1 also includes a conveyor 121, a drive chain 122 installed on the upper part of the conveyor 121, and a longitudinal drive motor 125 for driving the drive chain 122 to perform transmission. The drive chain 122 is used to drive the rollers 123 to perform longitudinal correction of the I-beam. A worm gear drive motor 126 is installed in the middle of the lower end of the conveyor 121. The drive end of the worm gear drive motor 126 is connected to a worm gear transmission shaft 127, which is used to drive the worm gear lifter 128 installed on the upper part of the workbench to lift and lower, so that the calibrated I-beam is lifted up, making it easy for the AGV transport vehicle 5 to receive and transport the I-beam from the upper end of the rollers 123.

[0030] Then, the AGV transport trolley 5 uses its telescopic arm 52 to transport the I-beam onto the AGV transport trolley. The two telescopic arms 41 are on both sides of the midpoint, with the aforementioned midpoint as the central reference. Subsequently, the AGV transport trolley 5 transports the I-beam to the manual assembly and spot welding station 2, where the corresponding parts are positioned and spot welded to the I-beam.

[0031] To improve efficiency, two manual assembly spot welding stations 2 are set up on this production line; like Figure 1-2As shown, the AGV transport vehicle 5 then transports the I-beam along the transport track 51 to the welding station 4 of the positioner. Taking advantage of the fact that the welding station 4 is a translational positioner, the AGV transport vehicle 5 smoothly transports the I-beam to the position of the translational positioner via the telescopic arm 52. Then the translational positioner fixes the I-beam. At the same time, two welding robots near the positioner weld the I-beam. Meanwhile, the I-beam is translated and repositioned on the positioner, so that the spot welded parts on the upper and lower sides of the I-beam are fully welded and fixed. Furthermore, to improve efficiency, the production line is equipped with four positioner welding stations 4, which are transported one by one by AGV transport vehicles 5.

[0032] like Figure 3 As shown, in addition, since the full welding time of the parts is relatively long, although setting up multiple positioner welding stations 4 can improve efficiency to a certain extent, there is still a situation where the assembled I-beams are queued. Therefore, a transition placement station 3 is set up before the positioner welding station 4. When the system recognizes that all positioner welding stations 4 are in a fully loaded state, the AGV transport vehicle 5 transports the spot-welded assembled I-beams to the transition placement station 3. The chain of the transition placement station 3 then transports the I-beams inward, so that the transition placement station 3 can store multiple spot-welded assembled I-beams.

[0033] In addition, during the welding process at the four welding stations of the positioner, a three-dimensional camera is set at the front end of the welding robot arm. The three-dimensional camera first identifies and locates the actual outline of the H-beam and matches it with the theoretical model stored in the database. Based on the theoretical model, the welding path is determined. Then, the three-dimensional camera at the front end of the welding robot arm moves to the position to be welded according to the actual position after matching. It performs close-range fine visual recognition and precise positioning of the actual weld. Then, the welding torch welds the weld. After all the welds on the top surface of the H-beam are welded once, the positioner flips the bottom surface of the H-beam and repeats the above steps. After welding is completed, the AGV transport trolley 5 connects with the positioner to move the I-beam away.

[0034] The method of moving is as follows: after the manual assembly and welding are completed, when the side-turning machine pushes the I-beam towards the AGV transport trolley 5, the edge adjacent to the side-turning machine and the AGV transport trolley 5 is the end point of the push, and at the same time the telescopic arm 52 of the AGV trolley lifts the I-beam onto the vehicle. Conversely, during loading, the center of the telescopic arm of the translational positioner is used as the docking center for docking.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent welding production line, comprising a workbench (100), characterized in that, Also includes: The length inspection station (1), manual assembly spot welding station (2), transition placement station (3) and multiple positioner welding stations arranged side by side (4) are arranged in sequence along the extension direction of the workbench (100), as well as AGV transport trolleys (5) for transporting I-beams between the stations. The length inspection station (1) includes a transverse conveying assembly (11) for transversely conveying the I-beams, and a longitudinal conveying assembly (12) for longitudinally conveying and verifying the I-beams.

2. The intelligent welding production line according to claim 1, characterized in that: The lateral conveying assembly (11) includes a first conveying chain (111); A second transmission chain (112) is provided on one side of the first transmission chain (111) and is connected to the first transmission chain (111) in a transmission manner; A transverse drive motor (113) is provided at the lower part of the first conveyor chain (111) for driving the first conveyor chain (111) and the second conveyor chain (112) to perform synchronous transmission. A drive shaft (114) is provided between the transverse drive motor (113) and the first transmission chain (111) and the second transmission chain (112).

3. The intelligent welding production line according to claim 2, characterized in that: The longitudinal conveying assembly (12) includes a conveyor table (121); A drive chain (122) installed on the upper part of the conveyor (121); And a longitudinal drive motor (125) for driving the drive chain (122) for transmission; The drive chain (122) is used to drive the roller (123) to longitudinally correct the I-beam; A worm gear drive motor (126) is installed at the lower middle part of the conveyor table (121); The drive end of the worm gear drive motor (126) is connected to the worm gear transmission shaft (127), which is used to drive the worm gear lifter (128) installed on the upper part of the worktable (100) to lift.

4. The intelligent welding production line according to claim 3, characterized in that: The length inspection station (1) is also equipped with a front-end locator (124) and an intermediate locator (129) for detecting the length of the I-beam; The front-end positioner (124) and the intermediate positioner (129) are equipped with encoders (1291).

5. The intelligent welding production line according to claim 1, characterized in that: The AGV transport vehicle (5) includes a transport track (51) and a telescopic boom (52) for receiving and releasing the I-beam.

6. The intelligent welding production line according to claim 1, characterized in that: The manual assembly spot welding station (2) is set up in two on the production line.

7. The intelligent welding production line according to claim 1, characterized in that: The positioner welding station (4) is set to four; Each of the positioner welding stations (4) is equipped with a welding robotic arm, the front end of which is equipped with a three-dimensional camera for weld identification and positioning.

8. The intelligent welding production line according to claim 1, characterized in that: The over-placement station (3) is equipped with a chain for storing and transporting I-beams.

9. The intelligent welding production line according to claim 1, characterized in that: The production line also includes a side-turning machine for working with the AGV transport vehicle (5) to remove the I-beams after welding.

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