Patent ID: 8624148
Filing Date: 2014-01-07
Classification: B23K

Abstract:
1. An anti-collision device for a plasma vertical cutting gun, the device comprising: a) a lifting frame of a plasma cutting machine; b) a fixing plate of a cutting gun; c) a proximity switch; d) a connection mechanism; and e) a concave support plate; wherein: said connection mechanism is mounted between said lifting frame of said plasma cutting machine and said fixing plate of said cutting gun; said fixing plate of said cutting gun is fixed on said connection mechanism; said proximity switch is mounted on said concave support plate connecting with said lifting frame of said plasma cutting machine; a contact surface between said connection mechanism and said concave support plate matches; one side of a joint plane between said connection mechanism and said concave support plate is of ferromagnetic materials and the other side thereof is provided with a magnet, thereby attracting each other to realize a magnetic connection; said connection mechanism comprises a ferromagnetic isosceles-triangle cushion block connected with said fixing plate of said cutting gun; said concave support plate is arranged with a trapezoid groove whose inclined angle is the same as the apical angle of said isosceles-triangle cushion block; two magnets are symmetrically fixed on two inclined planes of said trapezoid groove of said concave support plate; two waists of said isosceles-triangle cushion block are coupled to said two magnets of said trapezoid groove of said concave support plate to realize a magnetic connection; and a detection head of said proximity switch aligns with the apical angle of said isosceles-triangle cushion block.