Laser welding device and method for melting ball on filament end face

A technology of laser welding and welding method, applied in laser welding equipment, auxiliary devices, welding equipment and other directions, can solve the problems of eccentricity of the welding ball of medical guide wire, inaccurate control of welding heat input, easy oxidation, etc. Small influence area and improved welding effect

Active Publication Date: 2015-06-10
HANS LASER TECH IND GRP CO LTD
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Problems solved by technology

However, this method has a large welding heat-affected zone and is easy to oxidize after welding; and the control of welding heat input is not precise, and the positioning requirements are particularly high, and due to the effect of gravity, the molten ball formed at the end of the guide wire will Deviated to one side, it is easy to cause the welding molten ball at the end of the medical guide wire to be eccentric

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  • Laser welding device and method for melting ball on filament end face
  • Laser welding device and method for melting ball on filament end face
  • Laser welding device and method for melting ball on filament end face

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Embodiment Construction

[0026] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] see Figure 1 to Figure 4 , the laser welding device of the wire end face of the present invention includes a laser (not shown) for generating a laser beam 1, a round table 2, and a clamping member 3 for clamping and fixing the filament 100 (see image 3 ) and a plurality of fixed blocks 4, the clamping member 3 is vertically fixed to the center of the round platform 2, and the plurality of fixed blocks 4 are symmetrically fixed on the round platform 2 with respect to the filament 100 and abut against On the clamping member 3 , the laser beam 1 is arranged coaxially with the filament 100 , and the filament 100 can rotate around the axis of the filament 100 driven by the rotation of the round table 2 . In this way, the laser welding of the filament 100 is carried out during high-speed rotation. Due to the action of centrifugal force, t...

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Abstract

The invention provides a laser welding device and method for a melting ball on a filament end face, wherein the device comprises a laser used for producing a laser beam, a circular truncated cone, a clamping piece used for clamping and fixing a filament, and a plurality of fixing blocks, wherein the clamping piece is vertically fixed in the center of the circular truncated cone, the plurality of fixing blocks are evenly distributed around the axis of the filament, are fixed on the circular truncated cone, and are abutted against the clamping piece, and the laser beam and the filament are coaxially arranged. The laser welding device and method guarantee that the melting ball is not eccentric when welded at the end part of a wire, the welding heat affected zone is small, no oxidation occurs after the welding, and the welding effect of the filament end face is effectively improved.

Description

technical field [0001] The invention relates to the technical field of laser precision welding, in particular to a laser welding device and method for molten balls on wire end faces. Background technique [0002] In the field of minimally invasive treatment technology, it is usually necessary to use medical guide wires to guide and position various interventional medical catheters or implanted instruments into human organs, so as to introduce the catheter or introducer used for treatment or inspection to the target site. The medical guide wire includes a mandrel and a spring sheathed on the mandrel, and the mandrel and the spring need to be welded at the end of the medical guide wire during use. [0003] The existing welding method is TIG welding (Tungsten Inert Gas arc Welding, inert gas tungsten shielded welding), which uses pure tungsten or activated tungsten electrodes, and uses inert gas-argon as the shielding gas. Tungsten The rod electrode only conducts electricity a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/21B23K26/70B23K37/053
CPCB23K26/20B23K37/0533
Inventor 江柏霖朱宝华高云峰
Owner HANS LASER TECH IND GRP CO LTD
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