A multi-stage positioning welding device and a positioning welding process thereof

Abstract

The application provides a multi-section positioning welding device and a positioning welding process thereof. The multi-section positioning welding device comprises a platform defining a working area, and a first positioning welding station, a second positioning welding station and a third positioning welding station arranged on the working area. The frame assembly welding is implemented through the cooperation of the multiple positioning welding stations. Each component is transported to the required station in the working area. The multiple sections of each cover plate are spliced into a whole cover plate product on the placing table of the first positioning welding station. The frame box and the cover plate product are assembled by the second positioning welding station. The frame semi-product is turned over by the turnover mechanism to facilitate the direct operation of the rib plate in the third positioning welding station, and the welding is further strengthened. The cooperation of each station simplifies the welding process and greatly improves the manufacturing efficiency of the frame.

Description

Technical Field

[0001] This application relates to the field of welding technology, and more specifically, to a multi-segment tack welding device and its tack welding process. Background Technology

[0002] Without specialized tooling, assembling and welding the front and rear sections of a crane frame results in significant welding deformation, insufficient precision, high labor intensity, high costs, and low production efficiency. Tack welding, on the other hand, is performed to assemble and fix the position of components. While tack welding is more complex than general welding, it is more advantageous for assembling and welding the crane frame.

[0003] The core of a vehicle frame housing is formed by assembling the housing and its cover plate, and then welding on other accessories to create a basic frame housing. Due to the large size and volume of the frame housing, current frame welding in the market is mostly done manually. Manual welding relies heavily on workers' experience, resulting in a lack of standardized welding processes, inconsistent welding sequences, low welding stability, and low welding efficiency, which is detrimental to the trend of intelligent development. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a multi-segment positioning welding device and its positioning welding process to solve the above problems.

[0005] To achieve the above objectives, this application provides a multi-segment positioning welding device, including a platform with a defined working area and a first positioning welding station, a second positioning welding station and a third positioning welding station configured in the working area.

[0006] The platform is equipped with a logistics channel, which includes logistics trolleys for delivering materials to each positioning welding station. These trolleys are used at least to transport a first cover plate, a second cover plate, an intermediate cover plate, a flange ring, and stiffening plates within the working area; and...

[0007] The first positioning welding station includes a placement table, a first centering mechanism for joining the first cover plate and the intermediate cover plate, a second centering mechanism for joining the second cover plate and the intermediate cover plate, and a tooling mechanism for positioning the flange ring on the intermediate cover plate. The finished cover plate is welded at the first positioning welding station.

[0008] The second positioning welding station includes a positioning platform for supporting and limiting the frame housing, and a leveling mechanism arranged around the positioning platform. The leveling mechanism is configured to press and adhere the finished cover plate output from the first positioning welding station onto the frame housing for further welding to form a semi-finished frame. The positioning platform is provided with a flipping mechanism, which is configured to flip the semi-finished frame so that the finished cover plate is facing down.

[0009] The third positioning welding station is equipped with a material rack for connecting the semi-finished frame product from the second positioning welding station. The material rack is used to weld the reinforcing ribs to the middle cover plate and the frame body at the third positioning welding station.

[0010] In some embodiments, the tooling mechanism includes a clamping body for clamping and positioning the flange ring, a positioning push block disposed on the clamping body, and push groups disposed on both sides of the placement platform. The two push groups move synchronously closer or further away from each other to push the flange ring on the clamping body to be centered on the middle cover plate.

[0011] In some embodiments, the clamp body has a movable outer ring, and a plurality of positioning push blocks are arranged around the clamp body to move relative to each other along the axial direction. A flange ring is sleeved inside the outer ring so that the positioning push blocks are fitted between the two, so as to make adaptive position adjustments in accordance with the push assembly.

[0012] In some embodiments, the placement platform is positioned adjacent to the logistics channel, which extends along the length of the platform and is located above it, with the positioning platform and the rack positioned below the placement platform.

[0013] In some embodiments, the first centering mechanism is positioned in the width direction of the placement platform, and the first centering mechanism is located between the first cover plate and the intermediate cover plate and is more biased towards the first cover plate. The first centering mechanism is used to center and align the mating first cover plate and the intermediate cover plate.

[0014] In some embodiments, the second centering mechanism is positioned opposite the width of the placement platform, and is located between the second cover plate and the middle cover plate, with the second centering mechanism being more biased towards the second cover plate. The second centering mechanism is used to center and align the mating second cover plate and the middle cover plate; wherein, the two centering mechanisms are located on both sides of the push assembly.

[0015] In some embodiments, the positioning platform is configured to mate with the corresponding holes in the frame housing, and the positioning platform is provided with two additional sets of centering mechanisms for aligning the finished cover plate with each other on the frame housing. The leveling mechanism includes a plurality of end face pressing parts disposed outside the centering mechanism, and the flipping mechanism is configured as a chain flipping machine suitable for freely flipping the semi-finished frame.

[0016] In some embodiments, the end face crimping member is slidably positioned on the positioning stage in the manner of a robotic arm, so that the end face crimping member can be flexibly rotated and pressed onto the end face of the finished cover plate.

[0017] In some embodiments, the positioning platform and the material rack are transferred by means of RGV connection, and the material rack is provided with a support rail for external RGV to enter and exit.

[0018] A second aspect of this application provides a tack welding process based on the aforementioned multi-segment tack welding equipment, comprising the following steps:

[0019] Materials are input into the designated work area along the platform's logistics channel. The first cover plate, the second cover plate, the intermediate cover plate, and the flange ring are transported to the first positioning welding station, the stiffening plate is transported to the third positioning welding station, and the chassis box is equipped at the second positioning welding station.

[0020] On the placement platform, the first cover plate, the middle cover plate, and the second cover plate are aligned and welded together. Then, the flange ring is accurately positioned in the center of the middle cover plate by the tooling mechanism, and then the cover plate is welded together to form the finished product.

[0021] The cover plate finished product of the first positioning welding station is connected and placed through the positioning table of the second positioning welding station. The leveling mechanism presses and attaches the cover plate finished product to the frame box and then welds it. The frame semi-finished product is flipped 180 degrees on the positioning table by the flipping mechanism and then sent to the third positioning welding station.

[0022] The semi-finished frame from the second positioning welding station is connected and placed on the material rack at the third positioning welding station. Correspondingly, the welding of the stiffening plate between the middle cover plate and the frame box is completed at the third positioning welding station. Finally, the assembled frame is hoisted and transported to the next station.

[0023] Through the above technical solution, the multi-segment positioning welding equipment of this application, through the cooperation of multiple positioning welding stations, performs the assembly welding of the frame. In the working area, each component is transported to its respective required station. The cover plates are spliced ​​into a whole cover plate finished product on the placement table of the first positioning welding station. The frame body and the cover plate finished product are assembled by the second positioning welding station. The semi-finished frame is flipped by the flipping mechanism to facilitate the direct operation of the stiffeners at the third positioning welding station, further strengthening the welding. The cooperation of each component simplifies the welding process and greatly improves the manufacturing efficiency of the frame.

[0024] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:

[0026] Figure 1This is a schematic diagram of the structure of the multi-segment positioning welding equipment according to an embodiment of this application;

[0027] Figure 2 yes Figure 1 A structural diagram from another perspective;

[0028] Figure 3 This is a schematic diagram of the structure of each positioning welding station of the multi-segment positioning welding equipment according to an embodiment of this application;

[0029] Figure 4 This is a schematic diagram of the structure of the first positioning welding station of the multi-segment positioning welding equipment according to an embodiment of this application;

[0030] Figure 5 yes Figure 4 Structural diagrams from other perspectives;

[0031] Figure 6 This is a schematic diagram of the structure of the second and third positioning welding stations of the multi-segment positioning welding equipment according to an embodiment of this application;

[0032] Figure 7 yes Figure 6 A structural diagram from another perspective;

[0033] Figure 8 This is a flowchart of the positioning welding process according to an embodiment of this application.

[0034] Explanation of reference numerals in the attached drawings: 1-Platform; 2-First positioning welding station; 3-Second positioning welding station; 4-Third positioning welding station; 5-Logistics channel; 6-Placement table; 7-First centering mechanism; 8-Second centering mechanism; 9-Tooling mechanism; 10-Positioning table; 11-Leveling mechanism; 12-Material rack table; 13-Side positioning mechanism; 14-Clamp body; 15-Positioning push block; 16-Pushing assembly; 17-Outer ring; 18-End face pressing component; 19-Support rail; A-First cover plate; B-Second cover plate; C-Intermediate cover plate; D-Flange ring; E-Fir plate; F-Chassis box. Detailed Implementation

[0035] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0036] Combination Figures 1 to 7This embodiment provides a multi-segment positioning welding equipment, including a platform 1 with a defined working area and a first positioning welding station 2, a second positioning welding station 3, and a third positioning welding station 4 configured in the working area. The platform 1 is provided with a logistics channel 5, which is equipped with a logistics trolley for feeding materials to each positioning welding station. The logistics trolley is used to transport at least a first cover plate A, a second cover plate B, an intermediate cover plate C, a flange ring D, and a stiffening plate E within the working area. The first positioning welding station 2 includes a placement table 6, a first alignment mechanism 7 for joining the first cover plate A and the intermediate cover plate C, a second alignment mechanism 8 for joining the second cover plate B and the intermediate cover plate C, and a tooling mechanism 9 for positioning the flange ring D on the intermediate cover plate C. The finished cover plate is welded at the first positioning welding station 2. The second positioning welding station 3 includes a positioning platform 10 for supporting and limiting the frame housing F, and a leveling mechanism 11 arranged around the positioning platform 10. The leveling mechanism 11 is configured to press and adhere the finished cover plate output from the first positioning welding station 2 onto the frame housing F for further welding to form a semi-finished frame. The positioning platform 10 is provided with a flipping mechanism (not shown in the figure), which is configured to flip the semi-finished frame so that the finished cover plate is facing down. The third positioning welding station 4 is provided with a material rack 12 for receiving the semi-finished frame from the second positioning welding station 3. The material rack is used for welding the reinforcing ribs E to the middle cover plate C and the frame housing F at the third positioning welding station 4.

[0037] The multi-segment positioning welding equipment described above uses multiple positioning welding stations to cooperate in the assembly and welding of the vehicle frame. Within the working area, each component is transported to its respective required station. On the placement table 6 of the first positioning welding station 2, each cover plate is spliced ​​into a complete cover plate. The second positioning welding station 3 assembles the vehicle frame body F with the finished cover plate. The flipping mechanism flips the semi-finished vehicle frame to facilitate the direct operation of the stiffening plate E at the third positioning welding station, further strengthening the welding. The cooperation of each component simplifies the welding process and greatly improves the manufacturing efficiency of the vehicle frame.

[0038] like Figures 3 to 5 As shown, in this embodiment, the tooling mechanism 9 includes a clamping body 14 for clamping and positioning the flange ring D, a positioning push block 15 disposed on the clamping body 14, and push groups 16 positioned on both sides of the placement table 6. The two push groups 16 move synchronously closer or further apart to push the flange ring D on the clamping body 14 to be centered on the intermediate cover plate C. Obviously, the push groups 16 can adopt existing centering clamping devices to center the flange ring D at the desired center position on the intermediate cover plate C after centering and clamping the clamping body 14, so as to facilitate further welding operations.

[0039] Furthermore, the clamp body 14 is provided with a movable outer ring 17, and a plurality of positioning push blocks 15 are arranged around the clamp body 14 to move relative to each other along the axial direction. The flange ring D is sleeved inside the outer ring 17, so that the positioning push blocks 15 are fitted between the two, so as to follow the push assembly 16 to make adaptive position adjustments. Thus, the outer ring 17 acts on the positioning push blocks 15 to ensure that the positioning push blocks 15 can further fine-tune the position of the flange ring D, thereby improving the positioning accuracy of the assembly.

[0040] It should be noted that each positioning welding station is equipped with an independent welding robot (not shown in the figure), or the initial fixing welding can be done by manual spot welding, and then a unified full welding is performed at the end.

[0041] like Figure 2 and Figure 3 As shown, in this embodiment, the placement platform 6 is positioned adjacent to the logistics channel 5, which extends along the length of the platform 1 and is located at the upper position. The positioning platform 10 and the material rack 12 are sequentially positioned below the placement platform 6. This layout significantly improves the efficiency of material receiving and output on the entire platform 1 and enhances the overall volumetric efficiency of the equipment.

[0042] The first alignment mechanism 7 is positioned along the width of the placement platform 6, between the first cover plate A and the intermediate cover plate C, and more biased towards the first cover plate A. The first alignment mechanism 7 is used to align and align the mating first cover plate A and the intermediate cover plate C. Similarly, the second alignment mechanism 8 is positioned along the width of the placement platform 6, between the second cover plate B and the intermediate cover plate C, and more biased towards the second cover plate B. The second alignment mechanism 8 is used to align and align the mating second cover plate B and the intermediate cover plate C. The two alignment mechanisms are located on opposite sides of the push assembly 16. Furthermore, similar to the push assembly 16, the alignment mechanisms can employ existing alignment clamping devices.

[0043] like Figure 6 and Figure 7 As shown, in this embodiment, the positioning platform 10 is configured to mate with the holes in the frame housing F. The positioning platform 10 is equipped with two additional sets of centering mechanisms for aligning the finished cover plate on the frame housing F. The leveling mechanism 11 includes multiple end-face pressing parts 18 disposed outside the centering mechanism. The flipping mechanism is configured as a chain flipping machine suitable for freely flipping the semi-finished frame. Therefore, after spot welding the cover plate and housing, the chain flipping machine is used to flip the semi-finished frame 180 degrees for further, more direct connection and placement at the third positioning welding station 4. In other embodiments, the flipping mechanism can also be a positioner, etc., and is not limited here.

[0044] Specifically, the positioning platform 10 is equipped with a positioning structure (not shown) adapted to the chassis housing F, ensuring that the chassis housing F mounted on the positioning platform 10 can be placed stably. The centering mechanism provides initial adjustment and positioning, and the end face pressing component 18 of the leveling mechanism 11 can further press against the junction of the finished cover plate and the chassis housing F to facilitate further welding operations. In this embodiment, the end face pressing component 18 is slidably configured on the positioning platform 10 in the manner of a robotic arm, so that the end face pressing component 18 can flexibly rotate and press against the end face of the finished cover plate. In conjunction with this, a side positioning mechanism 13 is provided on the positioning platform 10. The side positioning mechanism 13 slides to abut against and approach the chassis housing F, correspondingly limiting the chassis housing F along the length direction. With the cooperation of the end face pressing component 18, the finished cover plate is precisely pressed onto the chassis housing F.

[0045] like Figure 2 and Figure 7 As shown, in this embodiment, the positioning platform 10 and the material rack platform 12 are transferred via an RGV connection, and the material rack platform 12 is provided with a support rail 19 for external RGVs to enter and exit. The connection between the positioning platform 10 and the material rack platform 12 facilitates the transfer of materials, and the support rail 19 on the material rack platform 12 facilitates the entry and exit of external RGVs for handling.

[0046] Combination Figure 8 This embodiment also provides a tack welding process based on the aforementioned multi-segment tack welding equipment, including the following steps:

[0047] S1: Input each material into the designated work area along the logistics channel 5 of platform 1, and respectively transport the first cover plate A, the second cover plate B, the middle cover plate C and the flange ring D to the first positioning welding station 2, transport the stiffening plate E to the third positioning welding station 4, and equip the frame box F on the second positioning welding station 3.

[0048] S2: On the placement table 6, the first cover plate A, the middle cover plate C and the second cover plate B are aligned and welded together. Then, the flange ring D is accurately positioned in the center of the middle cover plate C by the tooling mechanism 9, and then the cover plate is welded together to form the finished product.

[0049] S3: The cover plate finished product of the first positioning welding station 2 is connected and placed through the positioning table 10 of the second positioning welding station 3. The leveling mechanism 11 presses and adheres the cover plate finished product to the frame box F and then welds it. The frame semi-finished product is flipped 180 degrees on the positioning table 10 by the flipping mechanism and then sent to the third positioning welding station 4.

[0050] S4: The semi-finished frame of the second positioning welding station 3 is connected and placed through the material rack 12 of the third positioning welding station 4. Correspondingly, the welding of the stiffening plate E between the middle cover plate C and the frame box F is completed in the third positioning welding station 4. Finally, the assembled frame is hoisted and transported to the next station.

[0051] The aforementioned positioning welding process, through multiple positioning welding operations, enables the transfer, assembly, and welding of various frame components within the working area, greatly improving connection rigidity and enhancing the production quality of the frame.

[0052] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0055] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A multi-segment positioning welding device, comprising a platform (1) defining a working area and a first positioning welding station (2), a second positioning welding station (3), and a third positioning welding station (4) configured on the working area; characterized in that, The platform (1) is provided with a logistics channel (5), which is equipped with a logistics trolley that can deliver materials to each positioning welding station. The logistics trolley is used at least to transport the first cover plate (A), the second cover plate (B), the intermediate cover plate (C), the flange ring (D), and the stiffening plate (E) within the working area; and, The first positioning welding station (2) includes a placement table (6), a first centering mechanism (7) for joining the first cover plate (A) and the intermediate cover plate (C), a second centering mechanism (8) for joining the second cover plate (B) and the intermediate cover plate (C), and a tooling mechanism (9) for positioning the flange ring (D) on the intermediate cover plate (C). The finished cover plate is welded on the first positioning welding station (2). The first centering mechanism (7) and the second centering mechanism (8) are both positioned opposite each other in the width direction of the placement table (6). The first centering mechanism (7) is used to center and align the first cover plate (A) and the intermediate cover plate (C) that are in contact with each other. The second centering mechanism (8) is used to center and align the second cover plate (B) and the intermediate cover plate (C) that are in contact with each other. The second positioning welding station (3) includes a positioning platform (10) for supporting and limiting the frame housing (F) and a leveling mechanism (11) arranged around the positioning platform (10). The leveling mechanism (11) is configured to press and adhere the finished cover plate output from the first positioning welding station (2) onto the frame housing (F) for further welding to form a semi-finished frame. The positioning platform (10) is provided with a flipping mechanism, which is configured to flip the semi-finished frame so that the finished cover plate is facing down. The third positioning welding station (4) is provided with a material rack (12) for connecting the semi-finished frame of the second positioning welding station (3). The material rack (12) is used to weld the stiffening plate (E) to the middle cover plate (C) and the frame box (F) on the third positioning welding station (4). The tooling mechanism (9) includes a clamp body (14) for clamping the positioning flange ring (D), a positioning push block (15) arranged on the clamp body (14), and push groups (16) opposite to each other on both sides of the placement platform (6). The two push groups (16) move closer or further away from each other synchronously to push the flange ring (D) on the clamp body (14) to be centered on the middle cover plate (C). The clamp body (14) is provided with a movable outer ring (17), and a plurality of positioning push blocks (15) are arranged around the clamp body (14) to move relative to each other along the axial direction. The flange ring (D) is sleeved in the outer ring (17) so that the positioning push blocks (15) are fitted between the two, so as to follow the push group (16) to make adaptive position adjustment. The placement platform (6) is arranged on the side adjacent to the logistics channel (5). The logistics channel (5) extends along the length direction of the platform (1) and is formed in the upper position. The positioning platform (10) and the material rack platform (12) are arranged in sequence in the lower position of the placement platform (6).

2. The multi-segment positioning welding equipment according to claim 1, characterized in that, The first centering mechanism (7) is located between the first cover plate (A) and the intermediate cover plate (C) and is more biased toward the first cover plate (A).

3. The multi-segment positioning welding equipment according to claim 2, characterized in that, The second centering mechanism (8) is located between the second cover plate (B) and the middle cover plate (C) and is more biased toward the second cover plate (B); wherein the two centering mechanisms are located on both sides of the push group (16).

4. The multi-segment positioning welding equipment according to claim 1, characterized in that, The positioning platform (10) is configured to be inserted into the hole of the frame housing (F). The positioning platform (10) is provided with two other sets of centering mechanisms for the finished cover plate to be aligned with each other on the frame housing (F). The leveling mechanism (11) includes multiple end face pressing parts (18) arranged outside the centering mechanism. The flipping mechanism is configured as a chain flipping machine suitable for the free flipping of the semi-finished frame.

5. The multi-segment positioning welding equipment according to claim 4, characterized in that, The end face pressing component (18) is slidably arranged on the positioning table (10) in the manner of a robotic arm, so that the end face pressing component (18) can be flexibly rotated and pressed onto the end face of the finished cover plate.

6. The multi-segment positioning welding equipment according to claim 1, characterized in that, The positioning platform (10) and the material rack platform (12) are connected by an RGV for transfer, and the material rack platform (12) is provided with a support rail (19) for external RGV to enter and exit.

7. A tack welding process, characterized in that, The multi-segment tack welding equipment according to any one of claims 1 to 6 includes the following steps: Each material is input into the designated work area along the logistics channel (5) of the platform (1), and the first cover plate (A), the second cover plate (B), the middle cover plate (C) and the flange ring (D) are respectively transported to the first positioning welding station (2), the stiffening plate (E) is transported to the third positioning welding station (4), and the frame box (F) is equipped on the second positioning welding station (3). On the placement table (6), the first cover plate (A), the middle cover plate (C) and the second cover plate (B) are aligned and welded together. Then, the flange ring (D) is accurately positioned at the center of the middle cover plate (C) by the tooling mechanism (9), and then the cover plate is welded together to form the finished product. The cover plate finished product of the first positioning welding station (2) is connected and placed by the positioning table (10) of the second positioning welding station (3). The leveling mechanism (11) presses and attaches the cover plate finished product to the frame box (F) and then welds it. The frame semi-finished product is flipped 180 degrees on the positioning table (10) by the flipping mechanism and then sent to the third positioning welding station (4). The semi-finished frame of the second positioning welding station (3) is connected and placed through the material rack (12) of the third positioning welding station (4). The welding of the stiffening plate (E) between the middle cover plate (C) and the frame box (F) is completed on the third positioning welding station (4). Finally, the assembled frame is hoisted and transported to the next station.

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