Frame longitudinal beam combined beam welding integration device

Abstract

The application provides a frame longitudinal beam combined beam welding integrated device, which comprises a workbench, three presses, a transverse conveying mechanism, a transverse positioning mechanism, a lifting mechanism and a longitudinal conveying mechanism. The pre-combined longitudinal beam completed in the previous process is moved to the workbench compression welding area along the transverse direction by the transverse conveying mechanism. The positioning mechanism can realize the transverse positioning of longitudinal beams with different widths which are moved to the compression welding area. The lifting mechanism lifts and locks the positioned longitudinal beam. Then, the pressure head of the press is pressed to compress the inner beam and the outer beam of the longitudinal beam. After compression, manual welding of the inner and outer beams is performed. After welding, the longitudinal conveying mechanism of the integrated workbench lifts and longitudinally conveys the welded longitudinal beam out of the workbench to the next station. The application adopts a modular structure combination setting, is easy to realize automation, has high production efficiency and greatly reduces the labor intensity of workers.

Description

Technical Field

[0001] This invention belongs to the field of commercial vehicle longitudinal beam production and is used for the beam welding process of longitudinal beams with inner and outer beams, involving an integrated device for beam welding of vehicle frame longitudinal beams. Background Technology

[0002] Commercial vehicle longitudinal beams are mostly composed of a double-layer beam structure, including an inner beam and an outer beam. The pre-assembly beam process and the beam welding process are two important processes in the production of commercial vehicle longitudinal beams. The pre-assembly beam process involves placing the inner beam into the outer beam, while the beam welding process involves pressing the inner and outer beams together with a press and then welding them together to connect the inner and outer beams into one piece.

[0003] The traditional method for welding multiple varieties and small batches of beams is as follows: Workers manually position the longitudinal beams on the welding workbench. After positioning, the worker manually operates the press to clamp the beams at a single point. The worker then performs spot welding at the clamping point. After one weld is completed, the worker presses the press lift button to raise the press, moves the longitudinal beam to the next position, and repeats the clamping and welding process. Due to the large number of welding points, this method is inefficient and labor-intensive for workers. Summary of the Invention

[0004] To address the shortcomings in the aforementioned background technology, this invention proposes an integrated longitudinal beam welding device for vehicle frames, which solves the technical problems of low efficiency and high labor intensity of workers in the longitudinal beam welding process in the prior art, and is easy to automate.

[0005] To solve the technical problem, the technical solution of the present invention is: an integrated welding device for longitudinal beams of a vehicle frame, comprising a workbench and three presses, characterized in that: it further comprises a transverse conveying mechanism, a transverse positioning mechanism, a lifting mechanism, and a longitudinal conveying mechanism.

[0006] There are at least two transverse conveying mechanisms, which are arranged reasonably along the length of the worktable to convey the longitudinal beam to the pressing and welding area on the worktable.

[0007] There are at least two transverse positioning mechanisms, which are reasonably arranged on the worktable along the length direction to position the longitudinal beam in the pressing and welding area on the worktable.

[0008] There are three lifting mechanisms, which are arranged directly below the press to lift and lock the longitudinal beam, so that the longitudinal beam is separated from the transverse conveying mechanism and bears the pressure of the press and the longitudinal beam, and is used to support and bear the pressure load.

[0009] There are at least two longitudinal conveying mechanisms, which are reasonably arranged on the worktable along the length direction. When the lifting mechanism descends, it lifts the welded longitudinal beam that has fallen on the transverse conveying mechanism, separates it from the transverse conveying mechanism roller, and realizes the longitudinal conveying of the longitudinal beam along the worktable.

[0010] Further limitations on the above technical solution: There are 3 transverse conveying mechanisms, which are reasonably arranged on the worktable along the length direction; there are 3 transverse positioning mechanisms, which are reasonably arranged on the worktable along the length direction; there are at least 3 longitudinal conveying mechanisms, which are reasonably arranged on the worktable along the length direction. This combination of quantities is the optimal combination, which is convenient to correspond to 3 presses and facilitates modular layout.

[0011] Further details of the above technical solution: The transverse conveying mechanism includes a first motor reducer assembly. A driving roller and multiple driven rollers are supported on a transverse connecting bracket on the worktable. A driving sprocket is fixedly connected to the driving roller, and a driven sprocket is fixedly connected to the driven roller. The driving sprocket and driven rollers are connected by chain drive. The first motor reducer assembly is mounted on the worktable and is drive-connected to the driving roller. The longitudinal beam is conveyed to the pressing and welding area on the worktable by the rotation of the driving roller and multiple driven rollers.

[0012] Further details of the above technical solution: The lifting mechanism includes a guide frame, a first mounting base, an upper support block, a lower moving block, and a first hydraulic cylinder. The side of the upper support block is guided and fitted with the guide frame. The mating surface between the upper support block and the lower moving block is a wedge fit. The first hydraulic cylinder is mounted on the first mounting base. The guide frame is mounted on the worktable. The mounting base is mounted on the side of the worktable. The first hydraulic cylinder pushes the lower moving block to move forward in the horizontal direction, and the upper support block moves upward in the vertical direction, forming a wedge mechanism. The rigidity and self-locking property of the wedge mechanism are used to withstand the pressure applied to the longitudinal beam by the press. After the pressing and welding are completed, the first hydraulic cylinder moves in the opposite direction, and the upper support block descends, returning to the initial state.

[0013] Further clarification of the above technical solution: The longitudinal conveying mechanism adopts a wedge mechanism combined with a longitudinal conveying module structure, including a mounting frame, an upper wedge, a lower wedge, a second hydraulic cylinder, and a second mounting base. The side of the upper wedge is guided and fitted with the mounting frame, and the mating surface between the upper and lower wedges is a wedge-shaped fit. The second hydraulic cylinder is mounted on the second mounting base, the mounting frame is mounted on the worktable, and the second mounting base is mounted on the side of the worktable. The second hydraulic cylinder pushes the lower wedge to move forward in the horizontal direction, and the upper wedge to move upward in the vertical direction. The longitudinal conveying module includes multiple rollers, a second motor reducer assembly, and a mounting bracket. The multiple rollers and the second motor reducer assembly are mounted on the upper wedge through the mounting bracket. The second motor reducer assembly drives the rollers through a chain drive pair. When the upper wedge is raised, the longitudinal conveying module is also raised, thereby pushing the longitudinal beam to rise as well. When the longitudinal beam is raised to the correct position, the rollers of the longitudinal conveying module fixed on the upper wedge rotate, realizing the longitudinal conveying of the longitudinal beam.

[0014] The beneficial effects of this invention are as follows: This invention adopts a modular structure combination setting, which can realize feeding, positioning, lifting and discharging. It can realize multiple functions such as lateral movement, positioning, lifting and longitudinal movement of the longitudinal beam. Three presses simultaneously press the inner and outer beams of the longitudinal beam, which is convenient for workers to weld and easy to automate. It has high production efficiency and greatly reduces the labor intensity of workers. It can be applied to the pressing and welding of various types of longitudinal beams with different lengths and widths of 6-12 meters. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the integrated longitudinal beam welding device for the vehicle frame of the present invention;

[0016] Figure 2 This is a schematic diagram of the modular structure layout in this invention;

[0017] Figure 3 This is a structural diagram of the transverse conveying mechanism in this invention;

[0018] Figure 4 This is a schematic diagram of the lifting mechanism in this invention.

[0019] Figure 5 This is a front view structural diagram of the longitudinal conveying mechanism in this invention;

[0020] Figure 6 This is a top view of the longitudinal conveying mechanism in this invention; Detailed Implementation

[0021] The invention is further described below with reference to the accompanying drawings.

[0022] Example 1:

[0023] like Figure 1 , Figure 2 As shown, the integrated welding device for the longitudinal beams of the vehicle frame includes a worktable 1, three presses 2, a transverse conveying mechanism 6, a transverse positioning mechanism 4, a lifting mechanism 5, and a longitudinal conveying mechanism 3.

[0024] There are three transverse conveying mechanisms, which are arranged on the worktable along the length direction to convey the longitudinal beam to the pressing and welding area on the worktable.

[0025] There are three transverse positioning mechanisms, which are reasonably arranged on the worktable along the length direction to position the longitudinal beam in the pressing and welding area on the worktable.

[0026] There are three lifting mechanisms, which are arranged directly below the press to lift and lock the longitudinal beam, so that the longitudinal beam is separated from the transverse conveying mechanism and bears the pressure of the press and the longitudinal beam, and is used to support and bear the pressure load.

[0027] There are three longitudinal conveying mechanisms, which are reasonably arranged on the worktable along the length direction. When the lifting mechanism descends, it lifts the welded longitudinal beam that has fallen on the transverse conveying mechanism, separates it from the transverse conveying mechanism roller, and realizes the longitudinal conveying of the longitudinal beam along the worktable.

[0028] In Example 1, there are 3 transverse conveying mechanisms, 3 transverse positioning mechanisms, and at least 3 longitudinal conveying mechanisms. Combined with three presses and 3 lifting mechanisms, this is the optimal combination structure of the present invention. However, the present invention is not limited to this. Obviously, the intended purpose can be achieved when there are at least 2 transverse conveying mechanisms, lateral positioning mechanisms, and longitudinal conveying mechanisms.

[0029] Example 2:

[0030] like Figure 3 As shown, the transverse conveying mechanism includes a first motor reducer assembly 606. A driving roller 602 and multiple driven rollers 604 are supported on a transverse connecting bracket on the worktable. A driving sprocket 601 is fixedly connected to the driving roller, and a driven sprocket 603 is fixedly connected to the driven roller. The driving sprocket and the driven rollers are connected by chain drive. The first motor reducer assembly 606 is mounted on the worktable 1 and is drive-connected to the driving roller 602. The longitudinal beam is conveyed to the pressing and welding area on the worktable by the rotation of the driving roller and the multiple driven rollers.

[0031] Example 2 is one embodiment of a transverse conveying mechanism. It will be obvious to those skilled in the art that there are many other transverse conveying mechanisms with different structures that can be used as alternatives, such as transverse conveying mechanisms driven by electric push rods.

[0032] Example 3:

[0033] like Figure 4 As shown, the lifting mechanism includes a guide frame 505, a first mounting base 504, an upper support block 501, a lower moving block 502, and a first hydraulic cylinder 503. The side of the upper support block is guided and engaged with the guide frame. The mating surface between the upper support block and the lower moving block is a wedge fit. The first hydraulic cylinder is mounted on the first mounting base, the guide frame is mounted on the worktable 1, and the mounting base is mounted on the side of the worktable 1. The first hydraulic cylinder pushes the lower moving block to move forward in the horizontal direction, and the upper support block moves upward in the vertical direction, forming a wedge mechanism. The rigidity and self-locking property of the wedge mechanism are used to withstand the pressure applied to the longitudinal beam by the press. After the pressing and welding are completed, the first hydraulic cylinder moves in the opposite direction, and the upper support block descends, returning to the initial state.

[0034] Example 3 is an optimized embodiment of the lifting mechanism. It is obvious to those skilled in the art that there are other longitudinal conveying mechanisms with different structures that can be used as alternatives in the prior art.

[0035] Example 4:

[0036] like Figure 5 , Figure 6 As shown, the longitudinal conveying mechanism adopts a wedge mechanism combined with a longitudinal conveying module structure, including a mounting frame 304, an upper wedge 305, a lower wedge 303, a second hydraulic cylinder 302, and a second mounting base 301. The side of the upper wedge is guided and engaged with the mounting frame, and the mating surface between the upper and lower wedges is a wedge-shaped fit. The second hydraulic cylinder is mounted on the second mounting base, the mounting frame is mounted on the worktable 1, and the second mounting base is mounted on the side of the worktable 1. The second hydraulic cylinder pushes the lower wedge to move forward in the horizontal direction, and the upper wedge to move upward in the vertical direction. The longitudinal conveying module includes multiple rollers 307, a second motor reducer assembly 306, and a mounting bracket. The multiple rollers and the second motor reducer assembly are mounted on the upper wedge through the mounting bracket. The second motor reducer assembly drives the rollers through a chain drive pair. When the upper wedge is raised, the longitudinal conveying module is also raised, thereby pushing the longitudinal beam to rise as well. When the longitudinal beam is raised to the position, the rollers of the longitudinal conveying module fixed on the upper wedge rotate, realizing the longitudinal conveying of the longitudinal beam.

[0037] Example 4 is an optimized embodiment of the longitudinal conveying mechanism. It is obvious to those skilled in the art that there are other longitudinal conveying mechanisms with different structures that can be substituted in the prior art.

[0038] like Figure 1 , Figure 2 The lateral positioning mechanism shown includes an electric push rod and a positioning pin. The positioning pin is connected to the electric push rod, which moves the positioning pin back and forth, thereby achieving lateral positioning of longitudinal beams with different widths. The use of an electric push rod facilitates precise adjustment.

[0039] The lateral positioning mechanism in this invention is not limited to the lateral positioning mechanism described above. For example, a manually adjustable positioning pin can achieve the forward and backward movement of the positioning pin, although the adjustment speed is slightly slower than that of a positioning pin driven by an electric push rod.

[0040] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art based on the technical concept of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An integrated welding device for longitudinal beams of a vehicle frame, comprising a workbench and three presses, characterized in that: It also includes a lateral conveying mechanism, a lateral positioning mechanism, a lifting mechanism, and a longitudinal conveying mechanism. There are at least two transverse conveying mechanisms, which are arranged reasonably along the length of the worktable to convey the longitudinal beam to the pressing and welding area on the worktable. There are at least two transverse positioning mechanisms, which are reasonably arranged on the worktable along the length direction to position the longitudinal beam in the pressing and welding area on the worktable; the transverse positioning mechanism includes an electric push rod and a positioning pin, the positioning pin is connected to the electric push rod to move the positioning pin back and forth; There are three lifting mechanisms, which are arranged directly below the press to lift and lock the longitudinal beam, so that the longitudinal beam is separated from the transverse conveying mechanism and bears the pressure of the press and the longitudinal beam, and is used to support and bear the pressure load. There are at least two longitudinal conveying mechanisms, which are reasonably arranged on the worktable along the length direction. When the lifting mechanism descends, it lifts the welded longitudinal beam that has fallen on the transverse conveying mechanism, separates it from the transverse conveying mechanism roller, and realizes the longitudinal conveying of the longitudinal beam along the worktable. The transverse conveying mechanism includes a first motor reducer assembly. A drive roller and multiple driven rollers are supported on a transverse connecting bracket on the worktable. A drive sprocket is fixedly connected to the drive roller, and a driven sprocket is fixedly connected to each driven roller. The drive sprocket and driven rollers are connected via chain drive. The first motor reducer assembly is mounted on the worktable and is connected to the drive roller via a drive mechanism. The longitudinal beam is conveyed to the pressing and welding area on the worktable through the rotation of the drive roller and multiple driven rollers. The lifting mechanism includes a guide frame, a first mounting base, an upper support block, a lower moving block, and a first hydraulic cylinder. The side of the upper support block is guided and engaged with the guide frame. The mating surface between the upper support block and the lower moving block is a wedge fit. The first hydraulic cylinder is mounted on the first mounting base, the guide frame is mounted on the worktable, and the mounting base is mounted on the side of the worktable. The first hydraulic cylinder pushes the lower moving block to move forward in the horizontal direction, and the upper support block moves upward in the vertical direction, forming a wedge mechanism. The rigidity and self-locking property of the wedge mechanism are used to withstand the pressure applied to the longitudinal beam by the press. After the pressing and welding are completed, the first hydraulic cylinder moves in the opposite direction, and the upper support block descends, returning to the initial state.

2. The integrated welding device for longitudinal beams of the vehicle frame according to claim 1, characterized in that: There are three transverse conveying mechanisms, which are arranged on the worktable along the length direction; there are three transverse positioning mechanisms, which are arranged on the worktable along the length direction; and there are at least three longitudinal conveying mechanisms, which are arranged on the worktable along the length direction.

3. The integrated welding device for longitudinal beams of the vehicle frame according to claim 1 or 2, characterized in that: The longitudinal conveying mechanism adopts a wedge mechanism combined with a longitudinal conveying module structure, including a mounting frame, an upper wedge, a lower wedge, a second hydraulic cylinder, and a second mounting base. The side of the upper wedge is guided and fitted with the mounting frame, and the mating surface between the upper and lower wedges is a wedge-shaped fit. The second hydraulic cylinder is mounted on the second mounting base, the mounting frame is mounted on the worktable, and the second mounting base is mounted on the side of the worktable. The second hydraulic cylinder pushes the lower wedge to move forward in the horizontal direction, and the upper wedge to move upward in the vertical direction. The longitudinal conveying module includes multiple rollers, a second motor reducer assembly, and a mounting bracket. The multiple rollers and the second motor reducer assembly are mounted on the upper wedge via the mounting bracket. The second motor reducer assembly drives the rollers through a chain drive pair. When the upper wedge is raised, the longitudinal conveying module is also raised, thereby pushing the longitudinal beam to rise as well. When the longitudinal beam is raised to the correct position, the rollers of the longitudinal conveying module fixed on the upper wedge rotate, realizing the longitudinal conveying of the longitudinal beam.

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