In the context of automation trends, many structural workpiece welding and processing tasks are now completed using robots or robotic arms. The car body shown in the video utilizes multiple robotic arms simultaneously for welding, resulting in a significant increase in efficiency. For businesses, there is a need to transition from manual to automated welding, or existing automated welding methods may not be perfect. The issue of fixtures involved will be explained today using two patented solutions.
1. Automatic welding fixture for transport vehicle frame robot
In response to the problem
Currently, the welding and handling of pallet truck frames mainly rely on manual welding and manual handling. However, existing manual handling methods have many shortcomings for automated welding and are increasingly unsuitable for industry development, seriously affecting welding quality and production efficiency.
Technical solution
The robot-mounted welding fixture uses a pneumatic clamping linear guide system. When adjusting product specifications, the positions of the pneumatic pins and pneumatic pressure plates in the fixture can be changed to accommodate workpiece adjustments and meet the welding requirements of workpieces within various specified dimensions. The specific structure is shown in Figure 1: a base plate 2 is mounted on the adapter 1, and a cylinder 3 and a linear guide 4 are mounted on the base plate for driving and guiding. The cylinder push rod 5 has a workpiece clamping block 6 and a workpiece shape positioning pin 7 at its front end, and connects to the robot via the adapter 1.
Technical features
This robotic welding fixture for transport vehicles is used on transport robots in conjunction with arc welding robots to weld the entire frame of the transport vehicle, thereby achieving automated welding and effectively improving the robot's automatic welding efficiency and welding quality.
II. Automatic Welding Tilting Fixture
In response to the problem
Existing welding flipping fixtures can clamp workpieces and work with robots to perform welding flipping, but they still have some drawbacks, such as: lack of versatility (fixed workbench specifications and dimensions), low safety performance (exposed air pipes in the pneumatic system), and low stability of fixture flipping (uneven distribution of workpieces). These limitations hinder the promotion of automated production of small parts such as hardware and furniture by robots.
Technical solution
The design of the novel automatic welding flipping fixture shown in Figure 3 includes a worktable for positioning the workpiece and providing a welding platform; supports on both sides of the worktable for supporting the worktable; and a drive mechanism installed in the supports, with the drive mechanisms connected to each other to drive the worktable to flip.
In the scheme shown in Figure 3, the worktable has an assembled structure, and its size and specifications can be changed according to the processing volume of the workpiece or actual needs, which is conducive to the on-demand arrangement of workpieces of different specifications. The two supports are set separately without a fixed connection in the middle, and can be moved as needed to adapt to workpieces of different lengths.
An assembly-type workbench refers to a workbench that includes a base frame assembled from several support brackets. The support brackets are profile brackets, which can use standard profile parts or different specifications can be selected according to processing requirements, and then assembled into base frames of different sizes accordingly.
The positioning device that positions the workpiece on the worktable is shown above. The base is connected to the bracket via fasteners and connecting grooves, thus connecting the positioning device to the worktable. The clamping part on the base is opposite to the positioning part, enabling the clamping part to elastically position the workpiece that is close to the positioning part, which is effective and fast.
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