CN110153573B

CN110153573B - Optical fiber laser cutting equipment

Info

Publication number: CN110153573B
Application number: CN201910565081.2A
Authority: CN
Inventors: 不公告发明人
Original assignee: Liaocheng Jingwei Laser Equipment Co ltd
Current assignee: Liaocheng Jingwei laser equipment Co.,Ltd.
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2021-01-26
Anticipated expiration: 2039-06-27
Also published as: CN110153573A

Abstract

The invention relates to the technical field of laser cutting equipment and discloses optical fiber laser cutting equipment which comprises a cutting head and a focusing lens, wherein the focusing lens is fixedly arranged at the bottom in the cutting head, a connecting conical ring is fixedly arranged at the bottom end of the cutting head, an arc-shaped baffle is fixedly arranged at the bottom in the connecting conical ring, and a fastening conical ring is in threaded connection with the outer side of the cutting head. This optic fibre laser cutting equipment through the size that changes the internal diameter between the three cowl, changes the diameter that passes this internal diameter cutting light cylinder section, after again the built on stilts work piece of treating for with the work piece contact be the cylinder section of cutting light, consequently when cutting thicker work piece, can reduce because the influence that the cutting light tapering caused machining precision.

Description

Optical fiber laser cutting equipment

Technical Field

The invention relates to the technical field of laser cutting equipment, in particular to optical fiber laser cutting equipment.

Background

The optical fiber laser cutting machine is a novel international newly developed laser cutting machine, and is used for cutting a workpiece after laser emitted from a laser device is focused into a laser beam with high power density through a focusing lens, so that the cutting machine has the advantages of high precision, high cutting speed, no limitation to cutting patterns, automatic typesetting, material saving, smooth cut, low processing cost and the like. However, light is after through focusing, the laser beam can be the toper, so the gap of cutting out also is the toper, under this condition, to the great work piece of thickness, can form very obvious tapering, influence the machining precision, and simultaneously, when processing, in order to get rid of deckle edge, can spout high-pressure gas simultaneously, this gas can lead to deckle edge sweeps to splash, after gluing on the focusing lens, can lead to laser diffraction to appear, influence the cutting performance of laser beam, and metal sweeps can fish tail lens surface, reduce the life of lens.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides optical fiber laser cutting equipment which has the advantages of reducing the taper of a laser beam and facilitating scrap to adhere to a lens and a protective lens, and solves the problems that the machining precision is influenced by the tapered laser beam, the cutting performance is influenced by the scrap and the service life of the lens is reduced.

The invention provides the following technical scheme: the utility model provides an optic fibre laser cutting equipment, includes cutting head and focus lens, focus lens fixed mounting in bottom in the cutting head, the bottom fixed mounting of cutting head has the connection taper ring, the bottom fixed mounting who connects the taper ring has cowl, the outside threaded connection of cutting head has the fastening taper ring.

Preferably, the arc baffle comprises an arc bottom plate, an arc groove is formed in the top of the arc bottom plate, and a concave lens is fixedly sleeved on the top in the arc groove.

Preferably, the number of the arc-shaped baffles is three, the inner rings are all one third of a circle, and the three arc-shaped baffles are identical in thickness and are sequentially arranged in the connecting conical ring from bottom to top.

Preferably, the taper of the fastening taper ring is the same as that of the cutting head, and the taper of the fastening taper ring is smaller than that of the connecting taper ring.

Preferably, the connection conical ring and the arc-shaped baffle are made of different materials, the connection conical ring is made of red copper, and the arc-shaped baffle is made of a tungsten plate.

Preferably, the arc-shaped baffle plate is fixedly connected with the connecting conical ring through a fixing pin, the arc-shaped baffle plate and the connecting conical ring are provided with positioning holes, and the fixing pin is inserted into the two positioning holes for fixing.

The invention has the following beneficial effects:

1. this optic fibre laser cutting equipment through the size that changes the internal diameter between the three cowl, changes the diameter that passes this internal diameter cutting light cylinder section, after again the built on stilts work piece of treating for with the work piece contact be the cylinder section of cutting light, consequently when cutting thicker work piece, can reduce because the influence that the cutting light tapering caused machining precision.

2. This optic fibre laser cutting equipment, through a circle that three cowl encloses, cowl is located the below of focusing lens moreover, consequently adds man-hour, the sweeps that splashes that produce can be sheltered from by cowl completely, can not receive the diffraction of sweeps when guaranteeing the focusing lens focus, improves the cutting quality, also plays the guard action to the lens simultaneously, prolongs the life of lens.

Drawings

FIG. 1 is a schematic structural view of the present invention as a whole;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a schematic view of the connecting cone ring of the present invention;

fig. 4 is a schematic structural view of a curved baffle of the present invention.

In the figure: 1. a cutting head; 2. a focusing lens; 3. connecting the conical rings; 4. an arc-shaped baffle plate; 401. an arc-shaped bottom plate; 402. an arc-shaped slot; 403. a concave lens; 5. and (5) fastening the conical ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, an optical fiber laser cutting device includes a cutting head 1 and a focusing lens 2, the focusing lens 2 is fixedly installed at the bottom of the cutting head 1, a connecting conical ring 3 is fixedly installed at the bottom of the cutting head 1, an arc baffle 4 is fixedly installed at the bottom of the connecting conical ring 3, the inner annular surface of the arc baffle 4 is a vertical surface, the number of the arc baffle 4 is three, the inner rings are one third of a circle, the three arc baffles 4 have the same thickness and are sequentially installed in the connecting conical ring 3 from bottom to top, the size of the inner ring can be changed when a complete circle is formed, the connecting conical ring 3 and the arc baffle 4 are made of different materials, the connecting conical ring 3 is made of red copper, the arc baffle 4 is made of a tungsten plate, the melting point of tungsten is higher, the influence of laser is smaller, the arc baffle 4 is fixedly connected with the connecting conical ring 3 through a fixing pin, and positioning holes are formed on the arc baffle 4 and the connecting conical ring, the fixed pin inserts two locating holes and fixes, this kind of connected mode makes things convenient for the dismouting, the convenience is changed cowl 4, cowl 4 includes cowl 401, arc 402 has been seted up at cowl 401's top, concave lens 403 has been cup jointed to the top in the arc 402, the great light beam of diameter is when passing cowl 4, the side shines scattering on concave lens 403, reduce the damage to cowl 401, the outside threaded connection of cutting head 1 has fastening taper ring 5, it is the same with fastening taper ring 5 bottom external diameter to connect 3 bottom internal diameters of taper ring, the tapering of fastening taper ring 5 is the same with cutting head 1's tapering, the tapering of fastening taper ring 5 is less than the tapering of connecting taper ring 3, when rotating fastening taper ring 5, can produce the extrusion to connecting taper ring 3.

The working principle is that S100, a calibration piece with the same thickness as the workpiece to be processed is cut, and the focusing lens 2 is adjusted through the calibration piece, so that cutting light is adjusted;

s200, calculating the length and the taper of cutting light, and adjusting the diameter of an inner ring circle between the three arc-shaped baffles 4 according to the length, the taper and the cutting diameter required by a workpiece to be machined;

s300, calculating the length of the residual conical section of the cutting light through the diameter of the inner ring circle of the arc-shaped baffle 4, the length of the cutting light and the taper;

s400, erecting the workpiece to be machined, and enabling the distance from the bottom height to the bottom of the clamp to be the same as the length of the residual conical section of the cutting light;

s500, recording the position of the cutting head 1 at the moment, and ensuring that the cutting head 1 is always at the position in the subsequent machining process.

S201, rotating the fastening conical ring 5, and under the characteristic of threaded connection, enabling the fastening conical ring 5 to displace relative to the cutting head and to displace upwards;

s202, when the fastening conical ring 5 moves upwards, because the inner ring at the bottom moves upwards and the diameter of the connecting conical ring 3 is increased, extrusion force is generated on the connecting conical ring 3;

s203, extruding the three arc-shaped baffles 4 inwards after the connecting conical ring 3 is extruded, wherein the three arc-shaped baffles 4 can move inwards at the same time due to different heights, and the diameter of a formed inner ring circle is reduced;

s204, the inner diameter of the inner ring circle is reduced, after the conical laser penetrates through the inner ring circle, the part with the diameter larger than the inner diameter is shielded by the arc-shaped baffle 4, and the subsequent light ray sections penetrating through the inner diameter are all light rays with the same diameter as the inner diameter.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an optic fibre laser cutting equipment, includes cutting head (1) and focusing lens (2), focusing lens (2) fixed mounting in the bottom in cutting head (1), its characterized in that: the utility model discloses a cutting head, including cutting head (1), bottom fixed mounting has connection taper ring (3), bottom fixed mounting in connection taper ring (3) has cowl (4), cowl (4) include cowl (401), arc wall (402) have been seted up at the top of cowl (401), concave lens (403) have been fixed to have cup jointed at the top in arc wall (402), the quantity of cowl (4) is three, and the inner ring is the third circle, and is three the thickness of cowl (4) is the same, and from below install in proper order in connecting taper ring (3), the outside threaded connection of cutting head (1) has fastening taper ring (5).

2. The fiber laser cutting apparatus according to claim 1, wherein: the taper of the fastening taper ring (5) is the same as that of the cutting head (1), and the taper of the fastening taper ring (5) is smaller than that of the connecting taper ring (3).

3. The fiber laser cutting apparatus according to claim 1, wherein: the material of connecting conical ring (3) and cowl (4) is different, connect conical ring (3) and adopt red copper to make, cowl (4) adopt the tungsten board to make.

4. The fiber laser cutting apparatus according to claim 1, wherein: arc baffle (4) are through fixed pin and connection conical ring (3) fixed connection, and arc baffle (4) and be connected and all seted up the locating hole on conical ring (3), and the fixed pin inserts two locating holes and fixes.