Cutting gas circuit device of laser head
阅读说明：本技术 一种激光头的切割气路装置 (Cutting gas circuit device of laser head ) 是由 张忠磊 黄冬徽 李思佳 于 2020-07-06 设计创作，主要内容包括：本发明公开了一种激光头的切割气路装置,包括外气环、内气环、保护镜、喷嘴连接座、喷嘴、顶盖、外壳、气管、环形凹槽、通气孔和半圆孔；本发明结构合理简单、生产成本低、安装方便,功能齐全,激光头的切割气路装置中,气流经过了两次均匀分流,第一次是气流由外气环的环形凹槽进入周向分布的半圆孔,第二次是气流进入外气环上均匀分布的通气孔,从而气体均匀喷射成环形,分布均匀,湍流强度减少,减少了湍流对光束的干扰,有效提高切割质量,同时经过内气环后气流方向改变,对保护镜有一定吹扫作用,可以防止飞溅物黏附在保护镜上。(The invention discloses a cutting gas circuit device of a laser head, which comprises an outer gas ring, an inner gas ring, a protective glass, a nozzle connecting seat, a nozzle, a top cover, a shell, a gas pipe, an annular groove, a vent hole and a semicircular hole, wherein the outer gas ring is arranged on the inner gas ring; the gas path cutting device of the laser head has the advantages of reasonable and simple structure, low production cost, convenient installation and complete functions, and in the gas path cutting device of the laser head, the gas flow is uniformly divided twice, the first time is that the gas flow enters the semicircular holes which are circumferentially distributed from the annular groove of the outer gas ring, and the second time is that the gas flow enters the vent holes which are uniformly distributed on the outer gas ring, so that the gas is uniformly sprayed into a ring shape and is uniformly distributed, the turbulence intensity is reduced, the interference of turbulence on light beams is reduced, the cutting quality is effectively improved, meanwhile, the direction of the gas flow is changed after passing through the inner gas ring, a certain blowing effect is realized on a protective mirror, and splashe.)
1. The utility model provides a cutting gas circuit device of laser head which characterized in that: comprises an outer air ring (1), an inner air ring (2), a protective glass (3), a nozzle connecting seat (4), a nozzle (5), a top cover (6), a shell (7), an air pipe (8), an annular groove (9), a vent hole (10) and a semicircular hole (11);
the outer gas ring (1) is connected to the outer surface of the inner gas ring (2) in a coating manner, and a gas outlet gap is formed between the outer gas ring (1) and the inner gas ring (2);
an air flow channel is arranged in the inner air ring (2), and the air flow channel in the inner air ring (2) is communicated with an air outlet gap between the outer air ring (1) and the inner air ring (2);
the outer gas ring (1) is connected in the shell (7);
the protective glasses (3) are positioned at the top ends of the outer gas ring (1) and the inner gas ring (2);
the top cover (6) is fixedly connected to the top end of the shell (7);
the bottom end of the shell (7) is fixedly connected with a nozzle connecting seat (4);
the bottom end of the nozzle connecting seat (4) is fixedly connected with a nozzle (5);
an air pipe (8) is fixedly connected to the right side surface of the shell (7);
an annular groove (9) is formed in the outer surface of the outer gas ring (1), and the annular groove (9) is communicated with the gas pipe (8);
the upper surface of the outer gas ring (1) is provided with a plurality of semicircular holes (11) which are uniformly distributed, and the semicircular holes (11) are communicated with the annular groove (9);
the middle of the outer gas ring (1) is provided with a plurality of vent holes (10) which are uniformly distributed and penetrate through the outer gas ring from top to bottom.
2. The cutting gas path device of a laser head of claim 1, characterized in that: the number of the vent holes (10) and the number of the semicircular holes (11) are 20.
3. The cutting gas path device of a laser head of claim 1, characterized in that: the nozzle connecting seat (4) is in a taper shape.
Technical Field
The invention relates to the technical field of laser cutting, in particular to a cutting gas circuit device of a laser head.
Background
The laser cutting is to irradiate the workpiece with focused laser beam of high power density to melt or vaporize the irradiated material quickly, and then to blow high pressure gas through a nozzle coaxial with the laser beam to blow the melted or vaporized material away by the strong pressure of the gas to form a cutting seam.
The cutting gas path design will seriously affect the gas turbulence distribution, light path transmission and lens protection performance. When laser light propagates in turbulent flow, the fluctuation of gas refractive index caused by turbulent flow will cause the distortion of laser wave front, and destroy the coherence of laser light. The deterioration of laser coherence will seriously weaken the optical quality of laser, and cause the random drift of light, and the redistribution of laser energy on the beam cross section, including distortion, broadening, and fragmentation. In the laser thick plate processing, the processing quality of the workpiece is seriously influenced by the quality of the laser beam, and the quality of the beam which is not ideal causes the cutting opacity, the cutting efficiency low or the quality of the cutting section to be reduced.
Inside air current of traditional laser head directly enters into the inside air flue of laser head through the joint of ventilating, flows out from the nozzle again disorderly, and supplementary laser cuts. The air flow in the air blowing mode is vertically shot into an air passage in the laser head, the air flow is disordered in the internal transmission direction, the coherence of laser is damaged, meanwhile, the flow of auxiliary air flowing to a nozzle of the traditional laser head is weaker, the blowing effect on molten substances and the pushing back effect of splashes and dust entering from the nozzle are weakened, and the cutting effect of auxiliary laser is reduced.
Disclosure of Invention
The invention aims to solve the problems and provide a cutting gas path device of a laser head, which provides a novel laser head gas path design, guides the direction of gas flow, improves the stability of the gas flow, increases the flow of gas entering a nozzle, effectively prevents slag return, has a purging effect on a protective lens and accordingly provides cutting quality.
In order to solve the above problems, the present invention provides a technical solution: a cutting gas circuit device of a laser head comprises an outer gas ring, an inner gas ring, a protective glass, a nozzle connecting seat, a nozzle, a top cover, a shell, a gas pipe, an annular groove, a vent hole and a semicircular hole; the outer gas ring is connected to the outer surface of the inner gas ring in a wrapping manner, and a gas outlet gap is formed between the outer gas ring and the inner gas ring; the inner air ring is internally provided with an air flow channel, and the air flow channel in the inner air ring is communicated with an air outlet gap between the outer air ring and the inner air ring; the outer gas ring is connected in the shell; the protective glasses are positioned at the top ends of the outer air ring and the inner air ring; the top cover is fixedly connected to the top end of the shell; the bottom end of the shell is fixedly connected with a nozzle connecting seat; the bottom end of the nozzle connecting seat is fixedly connected with a nozzle; an air pipe is fixedly connected to the right side surface of the shell; an annular groove is formed in the outer surface of the outer air ring and communicated with the air pipe; the upper surface of the outer gas ring is provided with a plurality of semicircular holes which are uniformly distributed and communicated with the annular groove; and a plurality of vent holes which are uniformly distributed and penetrate through the outer gas ring from top to bottom are formed in the middle of the outer gas ring.
Preferably, the number of the vent holes and the number of the semicircular holes are both 20.
Preferably, the nozzle connecting seat is tapered.
The invention has the beneficial effects that: the gas path cutting device of the laser head has the advantages of reasonable and simple structure, low production cost, convenient installation and complete functions, and in the gas path cutting device of the laser head, the gas flow is uniformly divided twice, the first time is that the gas flow enters the semicircular holes which are circumferentially distributed from the annular groove of the outer gas ring, and the second time is that the gas flow enters the vent holes which are uniformly distributed on the outer gas ring, so that the gas is uniformly sprayed into a ring shape and is uniformly distributed, the turbulence intensity is reduced, the interference of turbulence on light beams is reduced, the cutting quality is effectively improved, meanwhile, the direction of the gas flow is changed after passing through the inner gas ring, a certain blowing effect is realized on a protective mirror, and splashe.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic top view of the present invention.
1-outer gas ring; 2-inner gas ring; 3-protective glasses; 4-nozzle connecting base; 5-a nozzle; 6-top cover; 7-a housing; 8-trachea; 9-an annular groove; 10-a vent hole; 11-semicircular hole.
Detailed Description
As shown in fig. 1 and fig. 2, the following technical solutions are adopted in the present embodiment: a cutting gas circuit device of a laser head comprises an
Wherein the number of the
The using state of the invention is as follows: cutting gas gets into
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
While there have been shown and described what are at present considered to be the fundamental principles of the invention and its essential features and advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
The control mode of the invention is controlled by manually starting and closing the switch, the wiring diagram of the power element and the supply of the power source belong to the common knowledge in the field, and the invention is mainly used for protecting mechanical devices, so the control mode and the wiring arrangement are not explained in detail in the invention.
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