Automatic welding device and method for I-shaped automobile steel beam

Abstract

This invention discloses an automatic welding device for I-beam automotive steel frame beams, including a traveling mechanism, a mounting component, and a welding mechanism. The traveling mechanism is located above a workbench for placing the I-beam automotive steel frame beam and drives the mounting component to move along the length of the workbench. A second mounting component is vertically inserted into the first mounting component. The welding mechanism is installed at the bottom of the second mounting component for welding the upper or lower connecting seam of the I-beam automotive steel frame beam placed on the workbench. The automatic welding device for I-beam automotive steel frame beams proposed in this invention, with a first support surface arranged along the lower connecting seam and a second support surface arranged along the upper connecting seam, ensures that the welding mechanism can always be aligned with the lower or upper connecting seam during its movement along the length of the I-beam automotive steel frame beam, without requiring an additional power source to drive the welding mechanism to adjust up and down.

Description

Technical Field

[0001] This invention relates to the field of I-beam automotive steel frame beam processing technology, and in particular to an automatic welding device and method for I-beam automotive steel frame beams. Background Technology

[0002] I-beams, also known as steel beams, are long strips of steel with an I-shaped cross-section. This cross-section design primarily uses the flanges furthest from the centroid to resist bending moments and the web to resist shear forces. However, the production process of I-beams used in the automotive industry is relatively complex because the cross-section of automotive I-beams is not a regular rectangular cross-section, but rather the width gradually changes at certain points, making production more complicated.

[0003] When welding existing I-beams, the workpieces are first assembled into an I-shape and placed on the welding workbench. Since the width of the existing I-beams varies in different places, the welding head needs to be frequently adjusted up and down to align with the upper or lower connecting seam. If the welding head uses a cylinder or other drive mechanism for up and down adjustment, the cylinder or other drive mechanism will work more frequently, which can easily lead to failure. Summary of the Invention

[0004] To address the technical problems existing in the background art, the present invention proposes an automatic welding device and method for I-shaped automotive steel frame beams.

[0005] The present invention proposes an automatic welding device for I-beam automotive steel frame beams, comprising a traveling mechanism, a first mounting component, and a welding mechanism. The traveling mechanism is located above a workbench for placing the I-beam automotive steel frame beams and drives the first mounting component to move along the length of the workbench. A second mounting component is vertically inserted into the first mounting component. The welding mechanism is installed at the bottom end of the second mounting component for welding the upper or lower connecting seams of the I-beam automotive steel frame beams placed on the workbench.

[0006] Preferably, the first mounting component is equipped with a support assembly and also includes a guide component. The guide component is located on one side of the traveling mechanism and is arranged parallel to the traveling mechanism. The guide component has a first support surface and a second support surface for supporting the support assembly. The support assembly is connected to a drive mechanism for moving between the first support surface and the second support surface.

[0007] Preferably, the first support surface and the second support surface are arranged side by side along the width of the workbench, the trend of the first support surface is the same as the trend of the lower connecting joint of the I-beam automotive steel frame beam, and the trend of the second support surface is the same as the trend of the upper connecting joint of the I-beam automotive steel frame beam.

[0008] Preferably, the first support surface specifically includes a first inclined section, a second horizontal section, and a second inclined section connected sequentially along the length of the workbench. The front end of the first inclined section and the rear end of the second inclined section are both connected to a first horizontal section that is horizontally coplanar with the second support surface.

[0009] Preferably, the support assembly includes a connecting rod and a pulley. The second mounting component has a through groove arranged along the width direction of the workbench. One end of the connecting rod is slidably inserted into the through groove and connected to a drive mechanism fixed in the through groove. The pulley is fixedly connected to the end of the connecting rod that extends out of the through groove.

[0010] Preferably, the outer ring of the pulley has a mounting groove along its circumference, and a plurality of balls are embedded in the mounting groove.

[0011] Preferably, the welding mechanism includes a mounting plate rotatably mounted on the second mounting component, a welding head fixed on the mounting plate, and a rotary motor for driving the mounting plate to rotate.

[0012] Preferably, the number of welding mechanisms is two sets.

[0013] This invention also proposes an automatic welding method for I-beam-shaped automotive steel frame beams, achieved through the aforementioned welding device, comprising the following steps: S1. When welding the lower connecting seam of the I-beam automotive steel frame beam, the support component is located on the first support surface, and the traveling mechanism drives the installation component to travel along the direction of the first support surface. During the travel, the support component moves along the first support surface, and the welding mechanism welds the lower connecting seam of the I-beam automotive steel frame beam. S2. When the support component moves to the first horizontal section on the first support surface, the lower connecting seam welding is completed. The rotating motor drives the welding mechanism to rotate so that the welding end on the welding mechanism is collinear with the upper connecting seam of the I-beam automotive steel frame beam. S3. The drive mechanism moves the support assembly to the second support surface, the walking mechanism moves the mounting parts in the opposite direction, and the welding mechanism welds the upper connecting seam on the I-shaped automotive steel frame beam.

[0014] Steps S2 and S3 are performed simultaneously.

[0015] The automatic welding device for I-beam automotive steel frame beams proposed in this invention uses a traveling mechanism to drive a welding mechanism to move along the length of the I-beam automotive steel frame beam to weld the upper or lower connecting seams. A first support surface arranged along the lower connecting seam and a second support surface arranged along the upper connecting seam ensure that the welding mechanism remains aligned with the lower or upper connecting seam throughout its movement along the length of the I-beam automotive steel frame beam. No additional power source is needed to adjust the welding mechanism up and down. The drive mechanism only needs to move the support assembly between the first and second support surfaces when the welding mechanism switches between welding the upper and lower connecting seams. This low movement frequency improves the service life of the drive mechanism. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the overall structure of an automatic welding device for I-shaped automotive steel frame beams proposed in this invention; Figure 2 This is a schematic diagram of the support component in an automatic welding device for I-shaped automotive steel frame beams proposed in this invention; Figure 3 This is a three-dimensional structural diagram of the guide component in an automatic welding device for I-shaped automotive steel frame beams proposed in this invention; Figure 4 This is a schematic diagram of the first state of the welding mechanism in an automatic welding device for I-shaped automotive steel frame beams proposed in this invention. Figure 5 This is a schematic diagram of the second state of the welding mechanism in an automatic welding device for I-shaped automotive steel frame beams proposed in this invention; Figure 6 This is a flowchart of an automatic welding method for I-beam-shaped automotive steel frame beams proposed in this invention. Detailed Implementation

[0017] Reference Figure 1-2 The present invention proposes an automatic welding device for I-beam automotive steel frame beams, comprising a traveling mechanism 1, a first mounting component 2, and a welding mechanism 3. The traveling mechanism 1 is located above a workbench for placing the I-beam automotive steel frame beams and drives the first mounting component 2 to move along the length of the workbench. A second mounting component 7 is vertically inserted into the first mounting component 2. The welding mechanism 3 is installed at the bottom end of the second mounting component 7 for welding the upper or lower connecting seams of the I-beam automotive steel frame beams placed on the workbench.

[0018] During welding, the traveling mechanism 1 drives the first mounting part 2, the second mounting part 7 and the welding mechanism 3 to move along the length of the I-shaped automotive steel frame beam. The second mounting part 7 is inserted into the first mounting part 2 and can move along the insertion direction, so that the welding mechanism 3 can move with the trend of the upper or lower connecting seam, thereby enabling the welding mechanism 3 to weld the lower or upper connecting seam of the I-shaped automotive steel frame beam.

[0019] It should be further explained that the first mounting component 2 is equipped with a support component 4 and also includes a guide component 5. The guide component 5 is located on one side of the walking mechanism 1 and is arranged parallel to the walking mechanism 1. The guide component 5 has a first support surface 51 and a second support surface 52 for supporting the support component 4. The support component 4 is connected to a drive mechanism for driving it to move between the first support surface 51 and the second support surface 52.

[0020] The first support surface 51 and the second support surface 52 are arranged side by side along the width of the workbench. The trend of the first support surface 51 is the same as that of the lower connecting joint of the I-beam automotive steel frame beam, and the trend of the second support surface 52 is the same as that of the upper connecting joint of the I-beam automotive steel frame beam.

[0021] When welding is required on the lower connecting seam, the support assembly 4 is on the first support surface 51, and the welding mechanism 3 is facing the lower connecting seam to weld the lower connecting seam. When the support assembly 4 is on the second support surface 52, the welding mechanism 3 is facing the upper connecting seam to weld the upper connecting seam.

[0022] Specific reference Figure 3 The second support surface 52 is horizontal. The first support surface 51 specifically includes a first inclined section 512, a second horizontal section 513, and a second inclined section 514 connected sequentially along the length of the workbench. The front end of the first inclined section 512 and the rear end of the second inclined section 514 are both connected to a first horizontal section 511 that is horizontal and coplanar with the second support surface 52.

[0023] In the above embodiments, reference is made to Figure 2 The support component 4 includes a connecting rod 41 and a pulley 42. The second mounting component 7 has a through groove 71 arranged along the width direction of the workbench. One end of the connecting rod 41 is slidably inserted into the through groove 71 and connected to the drive mechanism fixed in the through groove 71. The pulley 42 is fixedly connected to the end of the connecting rod 41 that extends outside the through groove 71.

[0024] When welding the lower connecting seam, the pulley 42 is first positioned on one of its first horizontal sections 511, and then the traveling mechanism 1 drives it to move towards another first horizontal section 511. When passing through the first inclined section 512, the support component 4 moves up and down with the inclination direction of the first inclined section 512, thereby driving the welding mechanism 3 to move up and down together, so that the welding mechanism 3 is always opposite to the lower connecting seam during the movement.

[0025] When the upper connecting seam needs to be welded after the current connecting seam is welded, the pulley 42 is on the first horizontal section 511. Then, the drive mechanism drives the pulley 42 to move from the first horizontal section 511 to the second support surface 52 through the connecting rod 41. At this time, when the walking mechanism 1 drives the first mounting part 2 and the second mounting part 7 to walk, the second mounting part 7 will drive the welding mechanism 3 to move along the second support surface 52 through the support component 4, thereby welding the upper connecting seam.

[0026] To facilitate the movement of pulley 42 between the first horizontal section 511 and the second support surface 52, the outer ring of pulley 42 is provided with a mounting groove along its circumference, and a plurality of balls 43 are embedded in the mounting groove.

[0027] Specific reference Figure 4 , Figure 5 In the above embodiment, the welding mechanism 3 includes a mounting plate 31 rotatably mounted on the second mounting member 7, a welding head 32 fixed on the mounting plate 31, and a rotating motor 33 for driving the mounting plate 31 to rotate. The distance between the welding head 32 and the rotation center of the mounting plate 31 is half the vertical distance between the first horizontal section of the lower connecting seam and the upper connecting seam. When the support assembly 4 is on the first horizontal section 511 on the first support surface 51, the welding head 32 is located at one end of the I-shaped automotive steel frame beam. At this time, the rotating motor 33 drives the welding head 32 to rotate through the mounting plate 31, so that the welding end of the welding head 32 is on the same plane as the upper connecting seam, which facilitates the walking mechanism 1 to weld the upper connecting seam when driving the welding mechanism 3 to move.

[0028] In addition, when the support component 4 is on the first horizontal section 511 of the first support surface 51, since the welding mechanism 3 is located at one end of the I-shaped automobile steel frame beam, the welding mechanism 3 is prevented from colliding with the I-shaped automobile steel frame beam, leaving space for the I-shaped automobile steel frame beam to be unloaded, making it convenient to remove the I-shaped automobile steel frame beam from the workbench.

[0029] To improve welding efficiency, the welding device proposed in this invention has two sets of welding mechanisms, with the two sets of welding mechanisms 3 located on both sides of the fitting, so as to simultaneously weld the upper or lower welding seam on both sides.

[0030] Specific reference Figure 6 The automatic welding method for I-beam automotive steel frame beams proposed in this invention, implemented using the aforementioned automatic welding device, includes the following steps: S1. When welding the lower connecting seam of the I-beam automotive steel frame beam, the support component 4 is located on the first support surface 51. The traveling mechanism 1 drives the mounting component 2 to travel along the direction of the first support surface 51. During the travel, the support component 4 moves along the first support surface 51, and the welding mechanism 3 welds the lower connecting seam of the I-beam automotive steel frame beam. S2. When the support component 4 moves to the first horizontal section on the first support surface 51, the lower connecting seam welding is completed. The rotating motor 33 drives the welding mechanism 3 to rotate so that the welding end on the welding mechanism 3 is coplanar with the upper connecting seam of the I-shaped automobile steel frame beam. S3, the drive mechanism drives the support component 4 to move onto the second support surface 52, the walking mechanism 1 drives the mounting component 2 to move in the opposite direction, and the welding mechanism 3 welds the upper connecting seam on the I-shaped automobile steel frame beam.

[0031] Steps S2 and S3 are performed simultaneously.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic welding device for I-beam-shaped automotive steel frame beams, characterized in that, The system includes a walking mechanism (1), a first mounting component (2), and a welding mechanism (3). The walking mechanism (1) is located above the workbench used to place the I-beam automotive steel frame beam and drives the first mounting component (2) to move along the length of the workbench. A second mounting component (7) is vertically inserted into the first mounting component (2). The welding mechanism (3) is installed at the bottom of the second mounting component (7) for welding the upper or lower connecting seam of the I-beam automotive steel frame beam placed on the workbench. The first mounting component (2) is equipped with a support assembly (4) and also includes a guide component (5). The guide component (5) is located on one side of the walking mechanism (1) and is arranged parallel to the walking mechanism (1). The guide component (5) has a first support surface (51) and a second support surface (52) for supporting the support assembly (4). The support assembly (4) is connected to a drive mechanism for driving it to move between the first support surface (51) and the second support surface (52). The first support surface (51) and the second support surface (52) are arranged side by side along the width of the workbench. The trend of the first support surface (51) is the same as the trend of the lower connecting joint of the I-beam automotive steel frame beam, and the trend of the second support surface (52) is the same as the trend of the upper connecting joint of the I-beam automotive steel frame beam. The welding mechanism consists of two groups; The first support surface (51) specifically includes a first inclined section (512), a second horizontal section (513), and a second inclined section (514) connected sequentially along the length of the workbench. The front end of the first inclined section (512) and the rear end of the second inclined section (514) are both connected to a first horizontal section (511) that is horizontally coplanar with the second support surface (52). The support assembly (4) includes a connecting rod (41) and a pulley (42). The second mounting part (7) has a through groove (71) arranged along the width direction of the workbench. One end of the connecting rod (41) is slidably inserted into the through groove (71) and connected to the drive mechanism fixed in the through groove (71). The pulley (42) is fixedly connected to one end of the connecting rod (41) extending outside the through groove (71).

2. The automatic welding device for I-beam automotive steel frame beams according to claim 1, characterized in that, The outer ring of the pulley (42) has a mounting groove along its circumference, and multiple balls (43) are embedded in the mounting groove.

3. The automatic welding device for I-beam automotive steel frame beams according to claim 2, characterized in that, The welding mechanism (3) includes a mounting plate (31) rotatably mounted on the second mounting component (7), a welding head (32) fixed on the mounting plate (31), and a rotating motor (33) for driving the mounting plate (31) to rotate.

4. The welding method of the automatic welding device for I-beam automotive steel frame beams according to claim 3, characterized in that, Includes the following steps: S1. When welding the lower connecting seam of the I-beam automotive steel frame beam, the support component (4) is located on the first support surface (51), the walking mechanism (1) drives the mounting component (2) to walk along the direction of the first support surface (51), and during the walking process, the support component (4) moves along the first support surface (51), and the welding mechanism (3) welds the lower connecting seam of the I-beam automotive steel frame beam. S2. When the support component (4) moves to the first horizontal section on the first support surface (51), the lower connecting seam welding is completed. The rotating motor (33) drives the welding mechanism (3) to rotate so that the welding end on the welding mechanism (3) is collinear with the upper connecting seam of the I-shaped automobile steel frame beam. S3, the drive mechanism drives the support component (4) to move onto the second support surface (52), the walking mechanism (1) drives the mounting component (2) to move in the opposite direction, and the welding mechanism (3) welds the upper connecting seam on the I-shaped automobile steel frame beam.

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