Laser cutting device
    63.
    发明专利

    公开(公告)号:JP5358216B2

    公开(公告)日:2013-12-04

    申请号:JP2009039283

    申请日:2009-02-23

    Abstract: Disclosed are a cutting method and cutting equipment for cutting steel sheet using a solid-state laser or fibre laser. In this cutting method, a laser beam that is emitted from a solid-state laser oscillator or fibre laser oscillator is formed into a ring beam (1). This ring beam (1) is directed onto a material (4) that is to be cut. Oxygen gas (2) is jetted along the axis (5) thereof. This cutting equipment has: a laser oscillator (11), a laser torch (12) having a nozzle (3), an optical system that has a conical prism (13) that is constructed between the laser oscillator (11) and the nozzle (3), a convex lens (14) and an optical fibre (15); and an oxygen gas supply system (17) that is connected with the laser torch (12). The laser beam that is emitted from the laser oscillator is formed, by means of the optical system, into the ring beam (1) and is directed from the nozzle (3) towards the material (4) that is to be cut, and the material (4) is cut by jetting the oxygen gas (2) that is supplied from the oxygen gas supply system (17) from the nozzle (3) towards the material (4) that is to be cut.

    Welding transformer and the welding transformer assembly and welding equipment

    公开(公告)号:JP5220931B1

    公开(公告)日:2013-06-26

    申请号:JP2012042873

    申请日:2012-02-29

    Abstract: [Problem] To enable fast and precise welding control for large current, as well as to reduce power consumption. [Solution] A welding transformer is provided with a ring-shaped core (25), a split primary coil (12), and a plurality of positive coils (14) and plurality of negative coils (16) alternately positioned one by one in the gaps (12a) of the primary coil (12). The plurality of positive coils (14) and plurality of negative coils (16) form a secondary coil. The positive coils (14) are electrically connected to a positive conductor (30) via a first connecting plate (44). The negative coils (16) are electrically connected to a negative conductor (32) via a second connecting plate (46). The connection between each positive coil (14) and negative coil (16) is electrically connected to a third connecting plate (48). The positive conductor (30), a rectifier element (18), and a first plate (34) are disposed on one side of a thin insulating layer (31), and the negative conductor (32), a rectifier element (20), and a second plate (36) are disposed on the other side. The first plate (34) and second plate (36) are electrically connected to a third plate (38). Thereby, a small welding transformer with high capacity can be achieved.

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