Positioning and welding device for a frame box and its assembly welding process

Abstract

This application provides a positioning and welding device for a vehicle frame housing and its assembly and welding process. The vehicle frame housing includes a base plate, a web plate, and a partition plate. The positioning and welding device includes a base platform extending along the length direction with a central axis reference, a gantry crane mechanism mounted on the base platform, and a centering mechanism and an assembly mechanism arranged on both sides of the central axis. The base plate, aligned on the central axis, is attracted and fixed by a magnetic suction table on the base platform to precisely define the assembly position of the base plate. The web plate is fed onto the table surface and abuts against the positioning component. The flipping platform rotates the web plate so that it slides down onto the base plate by gravity for assembly and spot welding. Subsequently, the partition plate is hoisted by the gantry crane mechanism to join with the base plate and the web plate. Finally, another web plate is assembled and welded to the base plate and the partition plate on another assembly mechanism, realizing the automated assembly of the entire vehicle frame housing and greatly improving the efficiency of assembly and welding.

Description

Technical Field

[0001] This application relates to the field of welding technology, and more specifically, to a positioning welding device for a vehicle frame housing and its assembly welding process. Background Technology

[0002] Truck cranes, commonly known as mobile cranes, are widely used in the lifting industry. However, currently, the crane chassis and body are assembled and welded in the front and rear production lines without specialized tooling, leading to significant quality issues, insufficient precision, high manual labor intensity, high rework costs, and low production efficiency. In particular, the assembly of the various panels of the chassis is quite cumbersome, resulting in low work efficiency and making it difficult to meet the needs of automated production lines. Summary of the Invention

[0003] In view of this, the purpose of this application is to provide a positioning welding device for a vehicle frame housing and its assembly welding process to solve the above problems.

[0004] To achieve the above objectives, this application provides a positioning and welding device for a vehicle frame housing, the vehicle frame housing including a bottom plate, a web plate and a partition plate; the positioning and welding device includes a base extending along the length direction and having a central axis reference, a gantry crane mechanism mounted on the base, and an alignment mechanism and an assembly mechanism arranged on both sides of the central axis.

[0005] The base is provided with a magnetic suction platform for mounting the positioning base plate. The magnetic suction platform is slidably arranged on the central axis along the length direction to define the reference positioning of the base plate. The centering mechanism includes pushing groups on both sides of the base plate in the width direction. Multiple pushing groups work together synchronously to center the base plate on the central axis so that the magnetic suction platform can further attract and fix it.

[0006] The gantry crane mechanism includes a track set on the outside of the base, a gantry frame slidably arranged on the track, and a lifting platform installed on the gantry frame. The lifting platform is provided with a clamping assembly for clamping partitions.

[0007] The assembly mechanism includes a flipping platform, which has a table surface with electromagnetic switching, a positioning component for limiting the web plate placed on the table surface along the length direction, and a telescopic component for lifting the web plate after the flipping platform rotates. When the telescopic component switches to the retracted state, the suspended web plate is assembled onto the base plate after the magnetism on the table surface is deactivated, which is suitable for further spot welding operations on the base plate and the web plate.

[0008] In some embodiments, the platform is provided with a plurality of sliding contacts and magnetic attractors, which are arranged alternately to form a sliding plane that facilitates the entry of the web plate onto the platform.

[0009] In some embodiments, the positioning member is disposed at the end of the table in the form of a stop, the sliding contact member has an arc-shaped contact surface, the arc-shaped contact surface is set at the same height as the end face of the magnetic member, and the protrusion height of the positioning member is greater than the height of the magnetic member.

[0010] In some embodiments, the telescopic member is disposed on the side edge of the platform so that, after the flipping platform is rotated, the telescopic member is located below the platform.

[0011] In some embodiments, a plurality of the telescopic members are spaced apart along the side edges, and the telescopic members are configured to switch between a retracted state and an extended state by a cylinder pushing a positioning rod.

[0012] In some embodiments, the flipping platform is movable and adjustable along the width direction of the base, wherein one flipping platform is used to assemble the web plate on the left side of the base plate, and the other flipping platform is used to assemble the web plate on the right side of the base plate.

[0013] In some embodiments, the lifting platform has at least displacement in the vertical and horizontal directions, and the clamping assembly, after clamping the positioning partition, is hoisted onto the base plate and one of the web plates.

[0014] In some embodiments, the clamping assembly includes two extension arms disposed below the lifting platform, each extension arm being movably configured on the lifting platform to move closer to or further away synchronously, and the extension arms being equipped with electromagnets.

[0015] In some embodiments, the base plate is configured as an irregularly shaped plate, and the pushing assembly includes contour push blocks positioned on both sides of the irregularly shaped plate, the contour push blocks being adapted to the irregularly shaped plate to push the irregularly shaped plate to center it on the magnetic suction platform.

[0016] A second aspect of this application provides a pair welding process based on the above-described positioning welding apparatus, comprising the following steps:

[0017] The base plate is moved and placed on the magnetic suction platform by the lifting device. The pushing group of the centering mechanism works together to center the base plate on the central axis and fix it in place by the magnetic suction platform.

[0018] First, place the web plate in one of the pairing mechanisms, and place the web plate against the positioning part on the table. Control the rotation of the flipping platform, and the telescopic part will lift the web plate. Switch the telescopic part to the retracted state, and the web plate on the table will slide down to the bottom plate for pairing under its own gravity, and then spot weld it.

[0019] The gantry crane hoisted the partition plate to the designated position on the bottom plate and web plate. The partition plate was spot welded to the bottom plate and web plate respectively until the assembly and welding of the partition plate was completed. Then, the web plate was placed in another assembly mechanism in the same way and the web plate was assembled and welded to the bottom plate and partition plate.

[0020] Through the above technical solution, the positioning and welding device for the chassis housing of this application uses a magnetic suction table on the base to attract and fix the bottom plate aligned on the central axis, so as to accurately define the assembly position of the bottom plate. The web plate is sent into the table and abuts against the positioning component. The flipping platform rotates until the web plate slides down onto the bottom plate by gravity for assembly and spot welding. Then, the gantry crane mechanism lifts the partition plate to join with the bottom plate and web plate. Finally, another web plate is assembled and welded to the bottom plate and partition plate on another assembly mechanism, realizing the automated assembly of the entire chassis housing and greatly improving the work efficiency of assembly and welding.

[0021] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0022] 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:

[0023] Figure 1 This is a schematic diagram of the positioning and welding device for the vehicle frame housing according to an embodiment of this application;

[0024] Figure 2 This is an application scenario diagram of the positioning and welding device for the vehicle frame housing according to an embodiment of this application;

[0025] Figure 3 yes Figure 2 A structural diagram from a first-person perspective;

[0026] Figure 4 yes Figure 2 A structural diagram from a second-person perspective;

[0027] Figure 5 yes Figure 2 Structural diagrams from other perspectives;

[0028] Figure 6 This is a schematic diagram of the structure of one of the push groups of the positioning and welding device for the chassis housing according to an embodiment of this application;

[0029] Figure 7 This is a schematic diagram of the structure of one of the flipping platforms of the positioning and welding device for the chassis housing according to an embodiment of this application;

[0030] Figure 8 yes Figure 7 A structural diagram from another perspective;

[0031] Figure 9 This is a flowchart of the assembly welding process according to an embodiment of this application.

[0032] Explanation of reference numerals in the attached drawings: 1-Base; 2-Gantry crane mechanism; 3-Centering mechanism; 4-Assembly mechanism; 5-Magnetic suction platform; 6-Pushing assembly; 7-Railway; 8-Gantry frame; 9-Lifting platform; 10-Clamping assembly; 11-Tilting platform; 12-Tabletop; 13-Positioning component; 14-Telescopic component; 15-Sliding contact component; 16-Magnetic suction component; 17-Extension arm; 18-Electromagnet; 19-Contouring push block; A-Base plate; B-Body plate; C-Partition plate. Detailed Implementation

[0033] 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.

[0034] Combination Figures 1 to 8 This embodiment provides a positioning and welding device for a vehicle frame housing, which includes a base plate A, a web plate B, and a partition plate C. The positioning and welding device includes a base 1 extending along its length and having a central axis reference, a gantry crane mechanism 2 mounted on the base 1, and a centering mechanism 3 and an assembly mechanism 4 disposed on both sides of the central axis. The base 1 has a magnetic suction table 5 for mounting the positioning base plate A. The magnetic suction table 5 is slidably disposed along the central axis along its length to define the reference positioning of the base plate A. The centering mechanism 3 includes pushing groups 6 opposing each other on both sides of the base plate A in the width direction. Multiple pushing groups 6 work synchronously to center the base plate A on the central axis, allowing the magnetic suction table 5 to further attract and fix it. The gantry crane mechanism 2 includes a track 7 disposed outside the base 1, a gantry frame 8 slidably disposed on the track 7, and a lifting platform 9 mounted on the gantry frame 8. The lifting platform 9 has a clamping assembly 10 for clamping the partition plate C. The assembly mechanism 4 includes a flipping platform 11, which has a table 12 with electromagnetic switching, a positioning member 13 for limiting the web plate B placed on the table 12 along the length direction, and a telescopic member 14 for lifting the web plate B after the flipping platform 11 rotates. When the telescopic member 14 switches to the retracted state, the suspended web plate B is assembled onto the base plate A after the magnetic field on the table 12 is demagnetized, which is suitable for further spot welding of the base plate A and the web plate B.

[0035] The aforementioned positioning and welding device for the chassis housing uses a magnetic suction table 5 on the base 1 to attract and fix the bottom plate A, which is aligned on the central axis, to precisely define the assembly position of the bottom plate A. The web plate B is then fed onto the table 12 and abuts against the positioning component 13. The flipping platform 11 rotates the web plate B so that it slides down onto the bottom plate A by gravity for assembly and spot welding. Subsequently, the gantry crane mechanism 2 lifts the partition plate C to join the bottom plate A and the web plate B. Finally, another web plate B is assembled and welded onto the bottom plate A and the partition plate C on another assembly mechanism 4, realizing the automated assembly of the entire chassis housing and greatly improving the efficiency of assembly and welding.

[0036] like Figure 7 and Figure 8 As shown, in this embodiment, the platform 12 is provided with multiple sliding contacts 15 and magnetic attractors 16, which are staggered to form a sliding plane that facilitates the entry of the web plate B onto the platform 12. The sliding contacts 15 facilitate the pushing of the web plate B onto the platform 12 to further abut against the positioning member 13 for initial positioning. Furthermore, after the flipping platform 11 rotates, the web plate B slides down the sliding contacts 15 to abut against the extended telescopic member 14, thus achieving precise positioning of the web plate B. At this time, the magnetic attractors 16 magnetically attract the web plate B onto the platform 12, providing stability and preventing the web plate B from tilting forward after the flipping platform 11 finally rotates to 90 degrees.

[0037] Specifically, the positioning member 13 is disposed at the end of the platform 12 in the form of a stop, the sliding contact member 15 forms an arc-shaped contact surface, the arc-shaped contact surface is set at the same height as the end face of the magnetic suction member 16, and the protrusion height of the positioning member 13 is greater than the height of the magnetic suction member 16. The arc-shaped contact surface is more conducive to the sliding movement of the web plate B in at least two directions.

[0038] Furthermore, the telescopic component 14 is positioned on the side edge of the platform 12, so that after the flipping platform 11 rotates, the telescopic component 14 is located below the platform 12. After the flipping platform 11 rotates 90 degrees, the web plate B stands upright above the base plate A. At this time, the magnetic attractor 16 demagnetizes and the telescopic component 14 switches to the retracted state, allowing the web plate B to slide directly onto the base plate A by gravity. Obviously, the distance between the flipped web plate B and the base plate A must be controlled within a small range to avoid a large collision. Although the magnetic attraction is removed, the web plate B can still rest against the platform 12 to avoid the problem of tipping over.

[0039] In this embodiment, a plurality of telescopic members 14 are spaced apart along the side edge. The telescopic members 14 are configured to switch between a retracted state and an extended state by a cylinder pushing a positioning rod. The position switching can be achieved by a cylinder pushing the positioning rod, or it can be driven by other power sources; no limitation is made here.

[0040] In this embodiment, the flipping platform 11 is movable and adjustable along the width direction of the base 1. One flipping platform 11 is used to assemble the web plate B on the left side of the base plate A, and the other flipping platform 11 is used to assemble the web plate B on the right side of the base plate A. The flipping platform 11 is driven by a positioner, and the entire platform is configured on a slide rail to adapt to the rapid assembly of different box sizes.

[0041] like Figure 4 and Figure 5 As shown, in this embodiment, the lifting platform 9 has at least displacement in the vertical and horizontal directions. After clamping and positioning the partition C, the clamping assembly 10 is hoisted onto the base plate A and one of the web plates B. It should be noted that the lifting platform 9 is raised and lowered to facilitate the partition C's entry onto the base plate A and web plate B, thus avoiding interference. The gantry frame 8 achieves x-axis rotation on the track 7, and the lifting platform 9 achieves y-axis and z-axis rotation on the gantry frame 8, greatly improving the flexibility of partition C hoisting.

[0042] The clamp assembly 10 includes two extension arms 17 disposed below the lifting platform 9. Each extension arm 17 is movably configured on the lifting platform 9 to synchronously move closer to or away from it, and an electromagnet 18 is provided on each extension arm 17. Thus, the partition C is attracted between the two extension arms 17 along its length. The two extension arms 17 can be adapted to attract partitions C of different sizes, greatly improving the adaptability of the entire welding line. Furthermore, hoisting the partition C onto the extension arms 17 reduces the hoisting height to some extent, improving the safety of the hoisting operation.

[0043] In this embodiment, the base plate A is configured as an irregularly shaped plate, and the pushing group 6 includes contour push blocks 19 positioned on both sides of the irregularly shaped plate. The contour push blocks 19 are adapted to the irregularly shaped plate to push it to center on the magnetic suction table 5. For the irregularly shaped plate, the contour push blocks 19 compensate for the defects between the plates, further facilitating synchronous centering and ensuring the consistency of each pushing group 6. Preferably, at least five or more pushing groups 6 are provided.

[0044] Combination Figure 9 This embodiment also provides a pair welding process based on the aforementioned positioning welding device, including the following steps:

[0045] S1: The base plate A is transferred and placed on the magnetic suction table 5 by the lifting device. The pushing group 6 of the centering mechanism 3 works together to the base plate A, so that the base plate A is centered on the central axis and is attracted and fixed by the magnetic suction table 5.

[0046] S2: First, place the web plate B in one of the pairing mechanisms 4, and place the web plate B against the positioning part 13 of the platform 12. Control the rotation of the flipping platform 11, and lift the web plate B by the telescopic part 14. Switch the telescopic part 14 to the retraction state, and the web plate B on the platform 12 slides down to the bottom plate A by its own gravity for pairing, and then spot welds it.

[0047] S3: The gantry crane mechanism 2 lifts the partition plate C to the designated position of the bottom plate A and the web plate B. The partition plate C is spot welded to the bottom plate A and the web plate B respectively until the assembly and welding of the partition plate C is completed. Then, the web plate B is placed in another assembly mechanism 4 in the same way, and the web plate B is assembled and welded to the bottom plate A and the partition plate C.

[0048] In the above process, the baseline positioning of the base plate A, the assembly and welding of the web plate B, the assembly and welding of the partition plate C, and finally the assembly and welding of the other web plate B are carried out in sequence, which greatly improves the automation process of the entire frame housing and meets the requirements of intelligent production line.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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 positioning and welding device for a vehicle frame housing, the vehicle frame housing comprising a base plate (A), a web plate (B), and a partition plate (C); the positioning and welding device comprising a base (1) extending along its length and having a central axis reference, a gantry crane mechanism (2) mounted on the base (1), and an alignment mechanism (3) and an assembly mechanism (4) disposed on both sides of the central axis; characterized in that, The base (1) is provided with a magnetic suction platform (5) for mounting and positioning the base plate (A). The magnetic suction platform (5) is slidably arranged on the central axis along the length direction to define the reference positioning of the base plate (A). The centering mechanism (3) includes pushing groups (6) on both sides of the base plate (A) in the width direction. Multiple pushing groups (6) work together to center the base plate (A) on the central axis so that the magnetic suction platform (5) can be further attracted and fixed. The gantry crane mechanism (2) includes a track (7) set outside the base (1), a gantry frame (8) slidably arranged on the track (7), and a lifting platform (9) installed on the gantry frame (8). The lifting platform (9) is provided with a clamping assembly (10) for clamping partitions (C). The assembly mechanism (4) includes a flipping platform (11) having a table (12) with electromagnetic switching, a positioning member (13) for limiting the web (B) placed on the table (12) along the length direction, and a telescopic member (14) for lifting the web (B) after the flipping platform (11) rotates. The platform (12) is provided with multiple sliding contacts (15) and magnetic attractors (16). After the flipping platform (11) rotates, the web plate (B) slides down along the sliding contact (15) to abut against the telescopic member (14) which is in the extended state. At this time, the magnetic attractor (16) is magnetically attracted to the web plate (B) on the platform (12). The magnetic suction component (16) is demagnetized, and the telescopic component (14) is switched to the recycling state, which corresponds to the suspension of the web plate (B) being assembled onto the base plate (A) after the demagnetization of the table surface (12), which is suitable for further spot welding operations on the base plate (A) and the web plate (B).

2. The positioning and welding device for a vehicle frame housing according to claim 1, characterized in that, The sliding contact (15) and magnetic attraction (16) are staggered to form a sliding plane that facilitates the entry of the web (B) into the table (12).

3. The positioning and welding device for a vehicle frame housing according to claim 2, characterized in that, The positioning element (13) is arranged at the end of the table (12) in the form of a stop block. The sliding contact element (15) forms an arc-shaped contact surface. The arc-shaped contact surface is set at the same height as the end face of the magnetic suction element (16). The protrusion height of the positioning element (13) is greater than the height of the magnetic suction element (16).

4. The positioning and welding device for a vehicle frame housing according to claim 1, characterized in that, The telescopic component (14) is disposed on the side edge of the tabletop (12), and after the flipping platform (11) rotates, the telescopic component (14) is located below the tabletop (12).

5. The positioning and welding device for a vehicle frame housing according to claim 4, characterized in that, Multiple telescopic members (14) are provided at intervals along the side edge, and the telescopic members (14) are configured to switch between a retracted state and an extended state by a cylinder pushing a positioning rod.

6. The positioning and welding device for a vehicle frame housing according to claim 1, characterized in that, The flipping platform (11) is movable and adjustable along the width direction of the base (1), wherein one flipping platform (11) is used to assemble the web plate (B) on the left side of the base plate (A), and the other flipping platform (11) is used to assemble the web plate (B) on the right side of the base plate (A).

7. The positioning and welding device for a vehicle frame housing according to claim 6, characterized in that, The lifting platform (9) has at least displacement in the vertical and horizontal directions, and the clamping assembly (10) is hoisted onto the base plate (A) and one of the web plates (B) after clamping the positioning partition (C).

8. The positioning and welding device for a vehicle frame housing according to claim 7, characterized in that, The clamp assembly (10) includes two extension arms (17) disposed below the lifting platform (9), each extension arm (17) being movably disposed on the lifting platform (9) to move closer or further away synchronously, and an electromagnet (18) is provided on the extension arm (17).

9. The positioning and welding device for a vehicle frame housing according to claim 1, characterized in that, The base plate (A) is configured as an irregular plate, and the pushing group (6) includes contour push blocks (19) opposite to the irregular plate on both sides. The contour push blocks (19) are adapted to the irregular plate to push the irregular plate to center on the magnetic suction table (5).

10. A pair welding process, characterized in that, Based on the positioning welding apparatus according to any one of claims 1 to 9, the process includes the following steps: The base plate (A) is transferred and placed on the magnetic suction table (5) by the lifting device. The pushing group (6) of the centering mechanism (3) works together to the base plate (A), so that the base plate (A) is centered on the central axis and is attracted and fixed by the magnetic suction table (5). First, place the web plate (B) in one of the pairing mechanisms (4), and place the web plate (B) against the positioning part (13) on the table (12). Control the rotation of the flipping platform (11), and lift the web plate (B) by the telescopic part (14). Switch the telescopic part (14) to the retraction state, and the web plate (B) on the table (12) slides down to the bottom plate (A) under its own gravity for pairing, and then spot welds it. The gantry crane mechanism (2) lifts the partition plate (C) to the designated position of the bottom plate (A) and the web plate (B). The partition plate (C) is spot welded to the bottom plate (A) and the web plate (B) respectively until the assembly and welding of the partition plate (C) is completed. Then, the web plate (B) is placed in another assembly mechanism (4) in the same way, and the web plate (B) is assembled and welded to the bottom plate (A) and the partition plate (C).

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