Unlock instant, AI-driven research and patent intelligence for your innovation.

Laser nozzle with movable element of improved outer profile

A technology of moving components and outer contours, applied in laser welding equipment, manufacturing tools, welding/welding/cutting items, etc., can solve the problem that the nozzle should not be too close to the board

Active Publication Date: 2016-12-28
LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This can also cause problems during the drilling phase as the nozzle should not be too close to the plate due to (there is) a lot of protruding molten metal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Laser nozzle with movable element of improved outer profile
  • Laser nozzle with movable element of improved outer profile
  • Laser nozzle with movable element of improved outer profile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0065] Figure 1A Shown is the focusing head 20 of a conventional laser cutting device, which is attached to a conventional laser nozzle 21 through which the focused laser beam passes and an auxiliary gas (arrow 23) which is used to discharge the The beam melts the metal from the cutting groove 31 formed by the beam 22 in the metal part 30 to be cut, such as a steel or stainless steel plate.

[0066] Auxiliary gases can be reactive gases such as oxygen, air, CO 2 or hydrogen; or an inert gas such as argon, nitrogen or helium; or a mixture of a plurality of these reactive and / or inert gases. The composition of the gas is chosen especially taking into account the properties of the parts to be cut.

[0067] The beam of light affecting the part melts the metal, which is then expelled under the part by the pressure of the assist gas.

[0068] Figure 1B The area (area) S1 of the hole 24 of the nozzle 21 relative to the size S2 of the focal point of the beam 22 is clearly shown. ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a nozzle for laser cutting, which includes a nozzle body (1), a movable element (2) and an elastic element (8). The nozzle body includes an axis seat (5) and a nozzle body (5). The first output hole (11) in the front (1a) area of ​​1), the movable element is located in the shaft seat (5) of the nozzle body (1), includes the skirt-shaped front part (2a) and includes the second output hole (12), the movable element (2) can translate in the shaft seat (5) toward the first output hole (11) under the action of the gas pressure exerted on the movable element (2), until the movable element The skirt-shaped front part (2a) of (2) protrudes from the shaft seat (5) through the first output hole (11), and the elastic element is arranged in the shaft seat (5) between the nozzle body (1) and the movable Between the elements (2), an elastic restoring force is exerted on the movable element (2). According to the invention, the front part (2a) includes an end part (17) whose outer diameter gradually decreases towards the second output hole (12). It also relates to a laser focusing head and a laser cutting device associated therewith, a laser beam cutting method using a nozzle according to the invention, a laser focusing head according to the invention or a device according to the invention.

Description

technical field [0001] The invention relates to a laser nozzle usable for laser beam cutting, the laser nozzle having an inner movable element including a skirt for concentrating the cutting gas in the cutting groove, the laser nozzle being industrially available Better implementation and increased service life. Background technique [0002] Laser beam cutting requires the use of a nozzle, usually made of copper, that directs the gas while allowing the laser beam to pass through. [0003] The diameter of the output orifice of the nozzle is typically between 0.5 mm and 3 mm for a working distance of between 0.6 mm and 2 mm. [0004] High pressures, typically several bars, are required in the focusing head for cutting to enable the gas to enter the groove and remove the molten metal. [0005] The majority of the gases used—usually between 50% and 90%—have no effect on the cutting process, ie on the discharge of the molten metal, since these gases flow to the sides of the cut...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/14B23K26/08
CPCB23K26/0876B23K26/1476B23K26/1488B23K2103/05B23K26/38
Inventor T·茹阿诺P·勒菲弗
Owner LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE