Device for laser welding of plastic pipe fittings

Abstract

The invention discloses a device for laser welding of plastic pipe fittings. The device comprises a laser transmission mechanism and a welding mechanism, and the laser transmission mechanism is connected with the welding mechanism through a laser beam; the laser transmission mechanism is composed of a laser incidence port, a connecting section, a scanning device and a cambered surface lens set, the laser incidence port is connected with the scanning device through the connecting section, and the cambered surface lens set is installed at the lower end of the scanning device; and the welding mechanism is a circular ring, a circle of welding conical surface is formed in the inner circle of the circular ring, and the welding conical surface is coated with a layer of total reflection film. By means of the mode, the device for laser welding of the plastic pipe fittings can easily achieve welding of the plastic pipe fittings in any shape without moving in the welding process.

Description

technical field [0001] The invention relates to the technical field of laser welding, in particular to a device for laser welding plastic pipe fittings. Background technique [0002] In laser welding of thermoplastics, sometimes called "laser transmission welding" or "transmissive infrared welding", the light-transmitting layer and the light-absorbing layer are bonded together to form a new polymer. [0003] At present, laser welding of plastics is mainly contour welding and quasi-synchronous welding. Both of them require external fixtures and clamping force during welding. Complex products require expensive fixtures, and they are only suitable for two-dimensional planes. For pipes Welding is only possible with the addition of a rotating motor. [0004] The above two welding methods have many requirements for the product, and the following problems are prone to occur [0005] 1. Welding pipes have certain requirements for materials, and the material properties are too soft...

AI Technical Summary

Problems solved by technology

[0005] 1. Welding pipes have certain requirements for materials, and the material properties are too soft under the clamping of the rotating motor, and it is easy to stay due to gravity;

[0006] 2. The size of the welded pipe has certain requirements. The diameter of the material is clamped by the rotating motor, and the clamping is not good because the diameter is too thin;

[0007] 3. The color of the welded pipe has certain requirements. If the upper and lower layers of the material are black and there are welding defects such as weak welding, no sealing, and inability to withstand high pressure, it cannot be inspected;

[0008] 4. Welded pipes have requirements for specifications, and complex joint types require expensive fixtures to ensure their concentricity;

[0009] 5. The length of the welded pipe has certain requirements. The longer the pipe, the rotation cannot be achieved, and the purpose of welding cannot be achieved.

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