Laser continuous welding device for reinforcing rib plate of plastic inspection well seat and welding method

Abstract

The invention discloses a laser continuous welding device for a reinforcing rib plate of a plastic inspection well seat and a welding method. The laser continuous welding device comprises a welding workbench, a laser output system and an automatic control system. The welding workbench is composed of a base, a positioning block, a robot and a first manipulator. The laser output system is composed of a semiconductor laser unit, an optical fiber and a laser beam output unit. The automatic control system is composed of a control panel and a PLC. The PLC controls working actions of the robot, the first manipulator, a second manipulator and the laser output system. The robot and the second manipulator control movement of the laser beam output unit and the movement track of a light spot. According to the welding method of the laser continuous welding device for the reinforcing rib plate of the plastic inspection well seat, the large plastic inspection well seat without the reinforcing rib plate is formed through injection moulding at first, and then the reinforcing rib plate is welded through the laser welding device, so that the design and manufacturing cost of an injection mould is lowered, and the process difficulty of injection moulding is reduced.

Description

technical field [0001] The invention relates to the technical field of plastic inspection wells, in particular to a laser continuous welding device and a welding method for reinforcing rib plates of plastic inspection well well seats. Background technique [0002] In the construction of municipal water supply and drainage pipe network systems, the market demand for large-scale plastic inspection wells with a diameter of more than 1 meter and a wall thickness of 10-15mm is increasing. PP plastic molding has good processing performance and comprehensive mechanical properties. It is a common material for large-scale plastic inspection wells. It is made of PP plastic. Large-scale plastic inspection wells are generally composed of well covers, well chambers and well seats. Among them, the well seats accept sub-pipes and well chambers in different directions, and bear the surrounding soil side pressure and road vehicle impact pressure during the installation of the pipe network. T...

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Problems solved by technology

[0003] One-time overall injection molding is the main processing method for large-scale plastic inspection well bases and their reinforcing ribs. Large-scale plastic inspection well bases are one-time integral injection molding. Not only is the size of the injection mold large, but it is also difficult to demould the well base and ribs. Moreover, mold cores and mold cavities with complex structures are required to meet the molding process of well blocks and rib plates. Therefore, the design and manufacture of injection molds for large plastic inspection well blocks and rib plates are expensive, and the injection molding process is difficult. High difficulty

[0004] At present, the welding methods for large-scale plastic inspection wells are mainly electrothermal fusion, ultrasonic welding, melt filling and chemical bonding. These methods all have problems such as large welding deformation, poor welding strength, and low efficiency.

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