KR20160003950U - Head of laser processing machine - Google Patents

Head of laser processing machine Download PDF

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Publication number
KR20160003950U
KR20160003950U KR2020150002973U KR20150002973U KR20160003950U KR 20160003950 U KR20160003950 U KR 20160003950U KR 2020150002973 U KR2020150002973 U KR 2020150002973U KR 20150002973 U KR20150002973 U KR 20150002973U KR 20160003950 U KR20160003950 U KR 20160003950U
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South Korea
Prior art keywords
purge gas
barrel
opening
lens
discharge port
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KR2020150002973U
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Korean (ko)
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KR200482310Y1 (en
Inventor
서정열
Original Assignee
주식회사 엘피텍
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Priority to KR2020150002973U priority Critical patent/KR200482310Y1/en
Publication of KR20160003950U publication Critical patent/KR20160003950U/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/082—Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
    • B23K26/126—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in an atmosphere of gases chemically reacting with the workpiece

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Processing (AREA)

Abstract

There is provided a laser processing apparatus head having a structure in which separation, disassembly, and bonding are easy and the inside is kept clean. The laser machining apparatus head has a hollow first body formed with a discharge port of a laser beam at one end and a first insertion port communicated with the discharge port at the other end, an opening formed at one end toward the discharge port, A second body having a hollow shape inserted and slid into the first body through the first insertion opening and a second insertion opening removably inserted into the second body through the second insertion opening, And at least one lens which overlaps with the opening, the hollow lens barrel being formed in a cylindrical shape and rotatable inside the circular second insertion opening, a plurality of binding members arranged rotationally symmetrically around the second insertion opening of the second body And a locking protrusion protruding in the radial direction of the barrel portion from the barrel portion and inserted between the coupling ring and the second body.

Description

[0001] The present invention relates to a head of a laser processing machine,

The present invention relates to a laser processing apparatus head formed in a laser processing apparatus and irradiating a laser beam, and more particularly, to a laser processing apparatus head having a structure in which separation, disassembly, and coupling are easy and the inside is kept clean will be.

Various machine tools are used to machine the base metal. The base material can be processed by using various kinds of machine tools such as a lathe, a milling machine, and a drilling machine, and one or more machine tools can be used to manufacture more various and suitable products. As a machine tool, not only a contact-type machining apparatus for processing a cutting edge or the like in contact with a base material, but also a non-contact type machining apparatus for irradiating and processing a high-temperature laser beam onto a base material are widely used.

The laser processing apparatus is configured to generate laser light, focus the laser light, and irradiate the laser light toward the processed surface of the base material. The laser machining apparatus has a smooth machined surface, no noise during operation, and can be finely and precisely machined, which is very useful in industrial fields. A head having an optical nozzle is formed at a portion of the laser processing apparatus facing the base material, and an optical system including a plurality of lenses is provided inside the head. Therefore, the focused laser beam can be irradiated from the optical system to the base material through the nozzle.

However, when particulate foreign substances having a small particle size or a small diameter penetrate into the inside of the head of such a laser processing apparatus, the optical system may be damaged and the normal operation of the apparatus may become difficult. Particularly, it is very difficult to shield the fine dust (fume) generated by evaporating instantaneously from the machined surface by the high-temperature laser beam while shielding the machined surface by spraying argon gas or compressed air at the time of processing the base material there is a problem.

Therefore, at least a part of the head must be separated or disassembled to clean the inside of the head from time to time. However, since the structure is difficult to separate, disassemble or reattach the head in the conventional case, maintenance and repair work can not be smoothly performed . In addition, there is a problem that fine dust or the like introduced into the inside of the head is adhered to the surface of the lens to damage the lens, or scatter the irradiated laser light, thereby significantly reducing the efficiency of the apparatus.

Korean Patent No. 10-0235178, (December 15, 1999)

The technical problem to be solved by the present invention is to provide a laser processing apparatus head having a structure in which separation, disassembly, and coupling are easy and the inside is kept clean.

The technical task of the present invention is not limited to the above-mentioned tasks, and other technical subjects not mentioned can be clearly understood by those skilled in the art from the following description.

The laser machining apparatus head according to the present invention includes: a hollow first body having a discharge port formed at one end thereof with a laser beam discharge port and a first insertion port connected to the discharge port at the other end; A hollow second body inserted into the first body through the first insertion opening and slidably inserted into the first body through the first insertion opening; ; The second insertion port is detachably inserted into the second body, and at least one lens that overlaps the discharge port and the opening is coupled to the inside of the second insertion port, A hollow cylinder body as possible; A plurality of coupling rings arranged rotationally symmetrically around the second insertion port of the second body; And a locking protrusion protruding from the barrel in the radial direction of the barrel and inserted between the coupling ring and the second body.

The laser processing apparatus head may further include a tongue portion formed on at least one of the coupling ring portion and the second body portion and elastically supporting the locking projection portion in close contact with the locking projection portion.

The elastic part may be formed of a ball plunger in a rolling contact with the locking protrusion.

The coupling ring may include a supporting part supported by the second body and a refracting part whose end is spaced apart from the second body and is bent at least once and connected to the supporting part.

At least a part of the refracting portion may be parallel to the second body, and the engaging projection may slide and move between the refracting portion and the second body.

The laser machining apparatus head may further include a guide groove that is opened in an elongated shape on at least one side of the first body, and a purge gas supply pipe that penetrates the guide groove and is coupled to the second body.

The laser machining apparatus head further includes a purge gas distribution portion formed between the barrel portion and the second body in a cylindrical space surrounding the barrel portion and connected to the purge gas supply pipe, And at least one nozzle unit connected to the distribution unit to inject the purge gas toward the lens.

The laser machining apparatus head is disposed between the first body and the second body so as to apply an elastic force in a sliding direction of the second body and has an elasticity formed by a coil spring passing through the center of the laser beam and the purge gas And an O-ring which is in contact with the first body and the second body between the inner peripheral surface of the first body and the inner peripheral surface of the second body to seal the first body and the second body and provide frictional force .

The laser machining device head according to the present invention is advantageous in that it is easy to separate, disassemble, and combine to perform a cleaning operation for keeping the inside of the head clean, and various other maintenance and repair operations.

In addition, it is possible to greatly reduce the working time when disassembling and cleaning the head due to the easy separation and coupling structure. Further, it is possible to reduce the position error of the lens caused by attaching and detaching, It is easy to control.

In addition, a very useful effect is obtained in which the fluid injection and ejection structure is used to create aligned fluid flow inside the head, keeping the lens surface inside the head clean, increasing the life of the device and greatly improving the welding efficiency have.

1 is a perspective view of a laser machining apparatus head according to an embodiment of the present invention.
2 is an exploded perspective view of the laser machining apparatus head of Fig. 1;
FIG. 3 is an exploded perspective view showing an enlarged view of a second body and a lens barrel portion of the laser processing apparatus head of FIG. 2;
Figs. 4 and 5 are cross-sectional views showing a purge gas supply and injection structure inside the laser processing apparatus head. Fig.
FIGS. 6 to 8 are views sequentially showing the coupling process of the second body and the barrel portion.
FIG. 9 is an operation diagram showing the focusing process of the laser machining apparatus head of FIG. 1;

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner in which it may be accomplished will become apparent by reference to the following detailed description, taken in conjunction with the accompanying drawings. It should be understood, however, that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, It is intended to give the owner a complete indication of the category of design, and the design is only defined by the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, the head of the laser processing apparatus according to one embodiment of the present invention will be described in detail with reference to FIGS. 1 to 9. FIG.

2 is an exploded perspective view of the head of the laser machining apparatus of Fig. 1, Fig. 3 is a perspective view of the head of the laser machining apparatus of Fig. 2, Fig. Figs. 4 and 5 are cross-sectional views showing a purge gas supply and injection structure inside the laser processing apparatus head. Fig.

1 to 5, a laser machining apparatus head 1 according to an embodiment of the present invention is provided with a laser beam discharge port (see 101 in FIG. 4) at one end and a discharge port 101 at the other end, An opening 201 (see FIG. 4) is formed at one end of the first body 100 facing the discharge port 101 and an opening 201 is formed at the other end of the first body 100, A hollow second body 200 formed with a circular second insertion opening 205 communicating with the first insertion opening 103 and slidably inserted into the first body 100 through the first insertion opening 103 and a second insertion opening 205 And is formed in a cylindrical shape so as to be detachably inserted into the second body 200 and coupled with at least one lens (see 301 in FIG. 4) overlapping the discharge opening 101 and the opening 201, A hollow cylindrical body 300 rotatable inside the first body 205 and a second cylindrical body 205 arranged in a rotationally symmetrical manner around the second insertion opening 205 of the second body 200 A plurality of coupling rings 230 and a locking protrusion 310 protruding in the radial direction of the barrel 300 from the barrel 300 and inserted between the coupling ring 230 and the second body 200 do.

The laser processing apparatus head 1 is configured such that the first body 100 and the second body 200 are slidably coupled to each other and the barrel 300 is detachably coupled to the second body 200 again. Particularly, the barrel portion 300 and the second body 200 are fixed very firmly using the locking protrusions 310 and the coupling rings 230 formed on the barrel portion 300 and the second body 200, So that it is very easy to join or release the engagement state.

In addition, the laser processing apparatus head 1 can freely adjust the focus of the laser beam by changing the mutual positions of the first body 100 and the second body 200. A structure for assisting the movement of the first body 100 and the second body 200 appropriately and attenuating the vibration is applied between the first body 100 and the second body 200 using an elastic force and a frictional force.

In addition, the laser machining apparatus head 1 includes a purge gas supply structure that supplies the purge gas to the inside independently of this coupling structure and constitutes a flow of the aligned fluid.

Therefore, foreign substances such as fine dust can be blocked in advance, and even if foreign matter is introduced, the foreign matter can be discharged very quickly, and the focus of the laser beam can be easily adjusted without stopping the supply of the purge gas, The vibration due to the flow of the purge gas can be removed very effectively.

Hereinafter, a laser machining apparatus head having these features will be described in more detail with reference to the drawings.

The first body 100 is formed in a hollow hollow shape and accommodates the second body 200 through an empty space. The outer surface of the first body 100 may be formed in the form of a hollow manifold having various types of coupling holes or grooves formed therein as shown in FIG. As shown in FIG. 4, a discharge port 101 through which the laser beam L passes is formed at one end of the first body 100, and a first insertion port 101 communicating with the discharge port 101 is formed at the other end of the first body 100, (103) are formed.

The discharge port 101 can be formed in a direction toward the base material of the first body 100 (downward in the drawing) and a part of the first body 100 located around the discharge port 101 and the discharge port 101 It is possible to form the nozzle, that is, the light nozzle 102 to which the laser beam L is irradiated. The first insertion port 103 is located on the opposite side of the discharge port 101 of the first body 100 and communicates with the discharge port 101 through a space inside the first body 100. The laser beam L is irradiated to the outside of the first body 100 through the discharge port 101.

The second body 200 is slidably coupled to the first body 100. The second body 200 is inserted into the first body 100 through the first insertion opening 103 and slides along the space inside the first body 100 as shown in FIGS. As shown in FIG. 2, the second body 200 may have a cylindrical outer shape, and the interior of the second body 200 may be hollow and hollow like the first body 100. The empty space formed in the first body 100 may be formed in a shape corresponding to the outer shape of the second body 200.

4, the second body 200 has an opening 201 formed at one end thereof and a circular second insertion port 205 formed at the opposite end thereof as shown in FIG. The opening 201 and the second insertion opening 205 are also communicated with each other through the internal space of the second body 200. The opening 201 may be formed by opening the end of the second body 200 in the direction in which the discharge port 101 is located and may be formed to be accommodated inwardly from the outside of the second body 200 toward the opening 201 (204). 4, an opening 201 connected to the receiving portion 204 and the receiving portion 204 may be continuously formed at an end portion of the second body 200 facing the ejection opening 101. As shown in FIG. At least a part of the elastic member 130 made of a coil spring may be accommodated in the accommodating portion 204 and a purge gas G to be described later may be inserted between the lens 301 and the ejection port 101 using the accommodating portion 204. [ So that it is possible to properly secure a space through which the fluid can flow. The laser beam and the purge gas are discharged through the center of the coil spring. Although the coil spring moves in the receiving part 204 to make fine dust, the purge gas can quickly suck the fine dust while discharging the fine dust while passing through the center of the coil spring.

Coupling holes 211a and 212a are formed on one side of the second body 200 as shown in FIG. At least one of the coupling holes 211a and 212a may be formed and the purge gas supply pipe may be coupled to the second body 200 through the coupling holes 211a and 212a. The purge gas supply pipe includes a first purge gas supply pipe 211 and a second purge gas supply pipe 212 which are coupled to the respective coupling holes 211a and 212a.

The first purge gas supply pipe 211 is connected to a purge gas distribution unit 11 to be described later and the second purge gas supply pipe 212 is connected to an inner space of the barrel 300 through a connection channel . The purge gas supply structure including the purge gas supply pipe will be described later in more detail.

The lens barrel 300 is detachably inserted into the second body 200 through a circular second insertion opening 205. The lens barrel 300 may have an hollow interior, and one or more lenses may be coupled to the inner space to form an optical system. 4, the lens 301 may be fixedly coupled to one end of the lens barrel 300 such that at least one lens 301 is sequentially superimposed on the discharge port 101 and the opening 201 . In this case, the overlapping means that the laser beam is placed in a straight line when viewed from one direction and is in a state capable of forming a light path through which a laser beam or the like is continuously passed, and does not necessarily mean a contact state. The laser beam L is successively passed through the lens 301 of the barrel section 300, the opening 201 and the discharge port 101 and is irradiated onto the base material.

The barrel 300 is formed in a cylindrical shape as shown in FIGS. 2 and 3 and is rotatable inside the circular second insertion opening 205. The second insertion port 205 is formed to have a size corresponding to the diameter of the lens barrel 300 on the opposite end of the second body 200 on which the opening 201 is formed. Accordingly, the barrel portion 300 can be easily rotated after being inserted into the second insertion port 205 and coupled to the second body 200.

A coupling ring 230 is coupled to the second insertion port 205 of the second body 200 as shown in FIG. A plurality of coupling claws 230 are arranged in a rotationally symmetrical manner around the second insertion port 205 and are formed in the same shape as each other. The coupling ring 230 may include a support portion 231 supported by the second body 200 and a refraction portion 232 connected to the support portion 231 as shown in FIG. The refracting portion 232 is refracted at least once and the tip portion is spaced from the second body 200 as shown.

In particular, at least a portion of the refracting portion 232 is formed in parallel with the second body 200. Therefore, the locking protrusion 310 formed on the barrel 300 can be easily inserted and inserted between the refracting portion 232 and the second body 200. The coupling ring 230 can be firmly fixed around the second insertion port 205 by using a coupling member such as a screw and the spaced width of the end of the coupling portion 232 corresponds to the thickness of the locking protrusion 310 So that its size can be appropriately adjusted.

The locking protrusion 310 protrudes from the barrel 300 in the radial direction of the barrel 300 as shown in FIG. The locking protrusion 310 is integrally formed with the lens barrel 300 and rotates together with the lens barrel 300. The locking protrusion 310 rotates to rotate the coupling ring 230 between the coupling ring 230 and the second body 200, 232 and the second body 200 by sliding. The user can easily grasp the end portion of the locking protrusion 310 to easily rotate the entire locking protrusion 310 and the barrel 300. The locking protrusion 310 can be rotated by the coupling ring 230 and the second body 200 So that it can be firmly fixed. A gripper 310a may be formed at an end of the locking protrusion 310 to have a concave or convex curved shape for easy gripping by a user.

That is, the barrel section 300 is very easily inserted into the second body 200 through the second insertion port 205 and is firmly fixed using the coupling structure of the coupling ring 230 and the locking protrusion 310. Particularly, it is possible to rotate the barrel 300 and to engage or disengage the engagement protrusion 310 and the coupling ring 230, and through this, the barrel 300 and the second body 200 can be easily coupled and / Can be separated.

As shown in FIG. 3, at least one of the binding claw 230 and the second body 200 has an elastic part 320 formed thereon. The elastic part 320 is in close contact with the locking protrusion 310 using an elastic force and elastically supports the locking protrusion 310. [ Therefore, after the locking protrusion 310 is inserted into the coupling ring 230, the coupling structure can be maintained without falling out. The elastic portion 320 may be formed of a ball plunger that comes into rolling contact with the locking protrusion 310 so as to guide the sliding movement of the locking protrusion 310 without interfering with the sliding movement of the locking protrusion 310. The specific coupling process of the second body 200 and the lens barrel 300 will be described later in more detail.

On the other hand, in the interior of the laser machining apparatus head 1, a separate purge gas supply structure may be formed independent of the detachment coupling structure. The purge gas supply structure may include the purge gas supply pipe, the purge gas distribution portion, and the nozzle portion. This will be described below with reference to FIGS. 4 and 5. FIG. Fig. 4 is a cross-sectional view showing the laser machining apparatus head, and Fig. 5 is a cross-sectional view showing the laser machining apparatus head.

The purge gas distribution portion 11 is formed between the barrel portion 300 and the second body 200 as shown in FIG. 5, the purge gas distribution part 11 is formed as a cylindrical space surrounding the barrel part 300, and can easily distribute the supplied purge gas G around the barrel part 300 . The purge gas distributor 11 may be formed as an isolated space between the outer indent 302 formed on the outer side of the barrel 300 and the inner indent 202 formed on the inner side of the second body 200 have.

4, the outer peripheral surface of the barrel 300 and the inner peripheral surface of the second body 200 are connected to the periphery of the barrel 300 and the inner surface of the second body 200 And may be formed in a stepped shape along the perimeter of the base. The volume of the purge gas distributor 11 may vary depending on the degree of indentation of the outer indent 302 and the inner indent 202 and the capacity of the purge gas circulating in the purge gas distributor 11 Can also change.

The nozzle unit 12 is connected to the purge gas distribution unit 11 to receive the purge gas G and to inject the supplied purge gas G toward the surface of the lens 301. The nozzle unit 12 may be formed around the opening 201 overlapping the lens 301 and may include a guide flange 203 connected to the receiving unit 204 and projecting inward of the second body 200, And may be formed between the barrel portion 300. As shown in FIG. 5, the plurality of nozzle units 12 may be disposed at positions facing each other.

The plurality of nozzle units 12a, 12b, 12c, and 12d facing each other can jet the supplied purge gas G toward the center of the lens 301. [ That is, a plurality of nozzle units 12a, 12b, 12c, and 12d arranged in pairs facing each other around the lens 301 are purged in the direction opposite to each other toward the center of the lens 301 as shown in Fig. The gas G can be injected. The purge gas G is circulated and distributed very easily while rotating along the purge gas distribution portion 11 formed in a cylindrical shape as described above and is discharged by the plurality of nozzle portions 12a, 12b, 12c, 12d The lens 301 is centered again.

 Each of the nozzle portions 12a, 12b, 12c, and 12d may be formed in a slit shape opened in a direction perpendicular to the axial direction of the lens 301 (the longitudinal direction in Fig. 4). Particularly, while the purge gas is jetted in parallel to the lens surface, it is possible to prevent the generation of a vortex between the lens surface and the purge gas, thereby preventing the fine dust from damaging the lens surface. Therefore, the purge gas G injected from the nozzle portions 12a, 12b, 12c, and 12d can flow along the surface of the lens 301 while being in contact with the lens 301, have. At this time, the purge gas G sufficiently circulated in the purge gas distribution portion 11 is injected at the same pressure through the respective nozzle portions 12a, 12b, 12c, and 12d, The flow can be refracted in the direction from the center of the lens 301 to the discharge port 101 through the opening 201 in a balanced manner as shown in Fig.

That is, a plurality of slit-like nozzle portions 12a, 12b, 12c and 12d are formed so as to face each other and are connected to a purge gas distribution portion 11 which is a cylindrical space which is easily circulated, It is possible to continuously guide the aligned flow of the purge gas G from the center of the lens 301 through the surface of the lens 301 to the discharge port 101 again. Accordingly, even when fine dust or the like generated from the outside of the laser processing apparatus head 1 flows into the inside, the surface of the lens 301 can be protected by using the flow of the purge gas G and can be discharged naturally. In addition, by keeping the flow of the purge gas G uniform, it is possible to eliminate the irregular airflow that may be formed inside the laser processing apparatus head 1. [ As a result, even when fine dust or the like is introduced into the laser processing apparatus head 1, it is only discharged along the flow of the purge gas G, and it is difficult to hit the irregular flow of other air, so that the residence time can be greatly reduced.

On the other hand, the purge gas (G) can form a flow through the inner space of the barrel section (300). The purge gas G can be injected into the inner space of the barrel section 300 through the connection passage (not shown) formed in the barrel section 300. The second purge gas supply pipe (see 212 in FIGS. The connection flow path may be formed to penetrate at least a part of the barrel section 300 and a plurality of purge gas G may be provided around the barrel section 300 to supply the purge gas G to the inside of the barrel section 300 in different directions. The purge gas G supplied to the inside of the lens barrel 300 is circulated through the lens barrel 300 in the upper or lower part of the lens barrel 300 while being exposed to the outside of the lens coupled to the inside of the barrel part 300 So that it can be kept clean.

As described above, the purge gas G is supplied to the inside of the laser processing apparatus head 1 through the first purge gas supply pipe 211 and the second purge gas supply pipe 212, It is possible to form a flow of purge gas (G) circulating to another internal space.

Hereinafter, the joining process of the lens barrel and the second body will be described in more detail with reference to FIGS. 6 to 8. FIG.

FIGS. 6 to 8 are views sequentially showing the coupling process of the second body and the barrel portion.

First, as shown in FIG. 6, the lens barrel 300 is aligned and inserted into the second insertion port 205 of the second body 200. The second insertion port 205 is formed in a circular shape as shown in the drawing, and the barrel portion 300 is also formed in a cylindrical shape and can be easily inserted into the second insertion opening 205. The user can grasp the locking protrusion 310 formed on the barrel 300 to align the barrel 300 with the second insertion port 205 and apply an external force to the barrel 300 to the inside of the second body 200 It can be easily inserted. At this time, the mutual position of the locking protrusion 310 and the coupling ring 230 is adjusted by rotating the barrel 300 so that the locking protrusion 310 does not catch on the coupling ring 230 formed on the second body 200 . A plurality of the locking protrusions 310 may be formed corresponding to the number of the coupling rings 230.

After inserting the barrel 300 into the second body 200, the entire hooking protrusion 310 and the barrel 300 are rotated as shown in FIG. That is, the cylindrical barrel portion 300 may be rotated while being inserted into the circular second insertion hole 205 to insert the coupling protrusion 310 between the coupling ring 230 and the second body 200 have. Particularly when at least a part of the refracting portion 232 constituting the binding claw 230 is parallel to the second body 200 and the engaging protruding portion 310 is slidingly moved between the refracting portion 232 and the second body 200 So that it can be inserted easily.

At this time, the elastic part 320 comes into rolling contact with the locking protrusion 310 to guide the sliding movement of the locking protrusion 310 naturally. That is, the ball portion of the elastic portion 320 formed by the ball plunger comes into rolling contact with the surface of the locking protrusion portion 310, thereby minimizing the friction. The locking protrusion 310 can be easily inserted between the coupling ring 230 and the second body 200.

The coupling claws 230 are arranged in a rotationally symmetrical manner as shown around the second insertion port 205. [ Therefore, the locking protrusion 310 protruding in the radial direction of the barrel 300 can easily engage with the respective coupling rings 230 by rotation. The number of the coupling rings 230 and the number of the locking protrusions 310 can be increased or decreased as necessary and it is possible to appropriately adjust the coupling strength between the barrel portion 300 and the second body 200.

When the locking protrusion 310 is completely inserted between the coupling ring 230 and the second body 200, the rotation is blocked as shown in FIG. In this state, the latching protrusion 310 is more firmly fixed by the elastic force of the elastic portion (see 320 in FIG. 7). That is, the locking protrusion 310 is firmly fixed by the elastic force of the elastic part 320 toward the locking protrusion 310 in the inserted state, and the entire barrel 300 is stably coupled with the second body 200. In the case of the tamping portion 320 formed of a ball plunger, an elastic force can be applied by a spring member or the like that elastically supports the bearing ball.

In this way, the second body 200 and the lens barrel 300 can be coupled together easily and firmly. The second body 200 and the lens barrel 300 can be easily separated from each other and the lens barrel 300 can be disassembled to clean the surface of the lens 301 Or the first body 100 connected to the second body 200 can be easily cleaned. 4 and 6) formed between the barrel portion 300 and the second body 200 are very conveniently cleaned and the purge gas supply (see FIGS. 4 and 6) It is possible to keep the laser processing apparatus head 1 clean.

FIG. 9 is an operation diagram showing the focusing process of the laser machining apparatus head of FIG. 1;

Meanwhile, O-rings 240 and 330 are inserted between the first body 100 and the second body 200, between the second body 200 and the barrel 300, and purge gas (see G in FIG. 4) ) Can be prevented from leaking and an airtight structure can be formed. 4 and 9) inserted into contact with the first body 100 and the second body 200 between the outer circumferential surface of the second body 200 and the inner circumferential surface of the first body 100, Tightly seals between the first body 100 and the second body 200 and provides an appropriate frictional force.

On the other hand, elastic members (see 130 in FIGS. 4 and 9) interposed between the first body 100 and the second body 200 are applied with an elastic force in the sliding direction of the second body 200. That is, as the purge gas G flows into the laser processing apparatus head 1, vibration may occur throughout the head. As shown in FIG. 6, the first body 100 and the second body 200 The elastic member 130 disposed between the first body 100 and the second body 200 elastically vibrates and the O-ring 240 interposed between the first body 100 and the second body 200 attenuates the vibration by frictional force, Can be reduced. By using the purge gas G in this manner, the vibration that may occur in the apparatus can be reduced.

The laser processing apparatus head 1 can very easily adjust the focus of the laser beam L even in the state where the purge gas is injected. 9 (a), the entire second body 200 and the barrel 300 can be slid in a direction away from the first body 100 by using the adjusting knob 220 or the like, Conversely, as shown in FIG. 9B, the entire second body 200 and the barrel 300 can slide in a direction close to the first body 100. The first purge gas supply pipe 211 and the second purge gas supply pipe 212 coupled to the second body 200 can move along the guide grooves 110 and 120 so that the sliding movement can be smoothly performed without being disturbed have.

That is, guide grooves 110 and 120 are formed on at least one side of the first body 100 to be opened in the form of an elongated groove, and the purge gas supply pipe or the like is inserted into the second body 200 through the guide grooves 110 and 120, As shown in FIG. As shown in FIG. 9, the guide grooves 110 and 120 may form at least one of the guide grooves 110 and 120, and the adjustment handle 220 and the like may be easily coupled to the second body 200.

The purge gas supply structure is formed between the second body 200 and the barrel 300 independently of the first body 100 as described above. Therefore, even when the positions of the first body 100 and the second body 200 are mutually adjusted, the purge gas can block the external contaminants very smoothly. Accordingly, it is possible to control the focal point or the like depending on the position of the base material, and to progress the machining operation very efficiently even during the machining operation such as cutting, welding, or the like.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art will appreciate that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1: Laser machining apparatus head 11: Purge gas distributor
12, 12a, 12b, 12c, 12d:
100: First body 101: Outlet
102: light nozzle 103: first insertion port
130: elastic member 110, 120: guide groove
200: second body 201: opening
202: Inner indentation part 203: Guide flange
204: accommodating portion 205: second inserting portion
211: first purge gas supply pipe 212: second purge gas supply pipe
211a, 212a: coupling hole 220: adjustment handle
230: a coupling ring 231:
232: refracting portion 240, 330: o-ring
300: lens barrel 301: lens
302: Outside indentation 303: Connection channel
310: a locking protrusion 310a:
320:
G: purge gas L: laser beam

Claims (8)

A hollow first body having a discharge port for the laser beam formed at one end thereof and a first insertion port at the other end for communicating with the discharge port;
A hollow second body inserted into the first body through the first insertion opening and slidably inserted into the first body through the first insertion opening; ;
The second insertion port is detachably inserted into the second body, and at least one lens which overlaps with the ejection opening and the opening is coupled to the inside of the second insertion port, and is formed into a cylindrical shape, A hollow cylinder body as possible;
A plurality of coupling rings arranged rotationally symmetrically around the second insertion port of the second body; And
And a locking protrusion protruding from the barrel in the radial direction of the barrel and inserted between the coupling ring and the second body. The method according to claim 1,
Further comprising a tongue portion formed on at least one of the coupling ring portion and the second body and being in close contact with the locking projection portion to elastically support the locking projection portion. 3. The method of claim 2,
And the bulge portion comprises a ball plunger that comes into rolling contact with the engagement protrusion. 3. The method of claim 2,
The binding claw includes a support portion supported by the second body,
And a refraction portion having an end portion spaced apart from the second body and being bent at least once to be connected to the support portion. 5. The method of claim 4,
Wherein at least a portion of the refracting portion is parallel to the second body, and the engaging projection is slidably inserted between the refracting portion and the second body. The method according to claim 1,
A guide groove opened at an end of at least one side of the first body in the form of an elongated groove,
And a purge gas supply pipe penetrating the guide groove and coupled to the second body. The method according to claim 6,
A purge gas distribution part formed in a cylindrical space surrounding the barrel part between the barrel part and the second body and connected to the purge gas supply pipe,
And at least one nozzle portion disposed around the opening and connected to the purge gas distribution portion to inject purge gas toward the lens. The method according to claim 1,
An elastic member interposed between the first body and the second body and configured to generate elastic force in a sliding direction of the second body and formed of a coil spring passing through the center of the laser beam and the purge gas,
And an O-ring which is in contact with the first body and the second body between the inner circumferential surface of the first body and the inner circumferential surface of the second body so as to seal between the first body and the second body and to provide frictional force, Processing device head.
KR2020150002973U 2015-05-08 2015-05-08 Head of laser processing machine KR200482310Y1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100235178B1 (en) 1996-01-30 1999-12-15 다니구찌 이찌로오 Laser beam machining method and device therefor
JP2002066777A (en) * 2000-08-31 2002-03-05 Toshiba Corp Laser machining head and processing method
JP2003053573A (en) * 2001-08-15 2003-02-26 Sumitomo Heavy Ind Ltd Laser beam machining head
KR20050070247A (en) * 2003-12-30 2005-07-07 두산인프라코어 주식회사 Machining head of laser cutting device
KR20150007033A (en) * 2013-07-10 2015-01-20 이동수 One-touch connector for cable

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100235178B1 (en) 1996-01-30 1999-12-15 다니구찌 이찌로오 Laser beam machining method and device therefor
JP2002066777A (en) * 2000-08-31 2002-03-05 Toshiba Corp Laser machining head and processing method
JP2003053573A (en) * 2001-08-15 2003-02-26 Sumitomo Heavy Ind Ltd Laser beam machining head
KR20050070247A (en) * 2003-12-30 2005-07-07 두산인프라코어 주식회사 Machining head of laser cutting device
KR20150007033A (en) * 2013-07-10 2015-01-20 이동수 One-touch connector for cable

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