DE112018005064T5 - Rotary device for supplying protective gas and extracting smoke - Google Patents

Abstract

A rotating device for supplying protective gas and extracting smoke is attached to a processing device which has a head. The rotating device comprises a mounting plate, a rotating plate and a common channel. The mounting plate is united with the head. The rotating plate is combined with the mounting plate and rotates with the mounting plate. The common channel is formed by a union surface of the rotary plate and / or a union surface of the fastening plate and has a channel through which protective gas is supplied or smoke is extracted.

Description

BACKGROUND

Field of revelation

The present disclosure of the invention relates to a rotating device for supplying protective gas and extracting smoke, and more particularly, the present disclosure of the invention relates to a rotating device for supplying protective gas and extracting smoke, in which an inert gas is stably around a wire is provided, which is melted by a laser beam in a three-dimensional printing device, and at the same time smoke is extracted, which arises during laser welding.

Description of the related technology

Laser welding uses the conversion of light energy, which is focused for amplification, into thermal energy. A laser beam is radiated directly onto a surface of a material to heat and melt the material so that the material is cut or bonded.

In laser welding, welding can be carried out for a relatively narrow and deep area, a thermal stress area is relatively small, and noise or wear are very little, so that laser welding is widely used in various kinds of technical fields. Recently, laser welding has been used in three-dimensional (3D) printing, in which a material such as metal or plastic is melted to be built up in layers by welding to form a 3D object.

In laser welding or 3D printing, a wire feed unit is designed to guide a wire used as the base metal to a focal point of the laser beam. Conventionally, an inert gas supply unit is designed to deliver an inert gas around the molten wire to minimize air contact with the wire.

In addition, smoke is generated when the wire is welded with the laser beam, and therefore a smoke extraction device is required to extract the smoke.

This forms a similar state of the art Korean Patent No. 10-1674192 (Shielding chamber for the production of a three-dimensional object).

Summary

The present invention was developed to solve the above-mentioned problems in the related art. The present invention provides a shielding gas and smoke extracting rotary device capable of supplying shielding gas and extracting smoke simultaneously with a single device.

According to one exemplary embodiment, a rotary device for supplying protective gas and extracting smoke is attached to a processing device which has a head. The rotating device comprises a mounting plate, a rotating plate and a common channel. The mounting plate is united with the head. The rotating plate is combined with the mounting plate and rotates with the mounting plate. The common channel is formed by a union surface of the rotary plate and / or a union surface of the fastening plate and has a channel for supplying protective gas or extracting smoke.

In one example, the common channel may have a first common opening that connects a top of the mounting plate to the channel and supplies the shielding gas or fumes and a second common opening that connects a bottom of the rotating plate to the channel and draws the shielding gas or the smoke.

In one example, the rotating device may further include a sealing portion disposed between the mounting plate and the rotating plate to prevent the shielding gas or smoke from escaping to the outside.

In one example, the sealing portion may include a first mounting groove that is hollowed out on the union surface of the rotating plate and / or the union surface of the mounting plate along an outside of the channel, a second mounting groove that is hollowed out on the union surface of the rotating plate and / or the union surface of the Fastening plate is formed along an inner side of the channel, a first sealing element which is attached to the first mounting groove, and a second sealing element which is attached to the second mounting groove.

In one example, the rotating device may further include a position determining section that arranges the first mounting groove and second mounting groove to form concentric circles. The position determination portion may have a position determination groove formed on the mounting plate, a position determination opening through the rotating plate is formed, and a positioning pin that passes through the positioning hole to be united with the positioning groove. The positioning pin can be removed after the mounting plate is joined to the rotating plate.

In one example, the head can emit a laser beam. A first through opening may be formed through a central portion of the mounting plate, and the laser beam passes through the first through opening. A second through hole aligned with the first through hole may be formed through a central portion of the rotating plate.

According to another exemplary embodiment, a rotary device for supplying protective gas and extracting smoke is attached to a processing device which has a head. The rotating device comprises a mounting plate, a rotating plate, a protective gas supply channel and a smoke extraction channel. The mounting plate is united with the head. The rotating plate is combined with the mounting plate and rotates with the mounting plate. The shielding gas supply channel is formed by a merging surface of the rotary plate and / or a merging surface of the fastening plate and has a shielding gas supply channel that supplies a shielding gas. The smoke evacuation channel is formed by the union surface of the rotary plate and / or the union surface of the fastening plate and has a smoke evacuation channel for extracting smoke.

In one example, the shielding gas supply channel may have a shielding gas inlet opening that connects an upper side of the mounting plate to the shielding gas supply channel and supplies the shielding gas, and a shielding gas outlet opening that connects a bottom side of the rotary plate to the shielding gas supply channel and the shielding gas subtracts.

In one example, the smoke evacuation duct may have a smoke suction opening that connects an underside of the rotating plate to the smoke evacuation duct and supplies the smoke, and a smoke outlet opening that connects an upper side of the mounting plate to the smoke evacuation duct and exhausts the smoke.

In one example, the protective gas supply duct and the smoke exhaust duct can form concentric circles.

In one example, the rotating device can furthermore have a position determination section which arranges the protective gas supply duct and the smoke exhaust duct to form the concentric circles. The position determination section may have a position determination groove formed on the mounting plate, a position determination opening formed through the rotary plate, and a position determination pin that passes through the position determination opening to be mated with the position determination groove. The positioning pin can be removed after the mounting plate is joined to the rotating plate.

In one example, a cross-sectional area of the smoke exhaust duct can be larger than that of the protective gas supply duct.

In one example, the protective gas supply channel can be arranged on the inside in comparison to the smoke exhaust channel.

In one example, the rotating device may further include a sealing portion disposed between the mounting plate and the rotating plate to prevent the shielding gas and smoke flowing through the shielding gas supply duct and the smoke exhaust duct from escaping to the outside.

In one example, the sealing portion may have a first mounting groove that is hollowed out on the union surface of the rotating plate and / or the union surface of the mounting plate along an outside of the smoke exhaust duct, a second mounting groove that is hollowed out on the union surface of the rotating plate and / or the union surface of the Mounting plate is formed along an inside of the shielding gas supply channel, a third mounting groove, which is hollowed out on the connection surface of the rotary plate and / or the connection surface of the mounting plate along the shielding gas supply channel and the smoke exhaust duct, a first sealing element which is attached to the first mounting groove is, a second sealing member attached to the second mounting groove and a third sealing member attached to the third mounting groove.

In one example, the head can emit a laser beam. A first through opening may be formed through a central portion of the mounting plate, and the laser beam may pass through the first through opening. A second through hole that is aligned with the first through hole may be formed through a central portion of the rotating plate.

In one example, the rotating device can also have a follower unit which rotatably combines the rotating plate with the fastening plate.

In one example, the mounting plate may also have a step portion that protrudes around an outside and inside of the mounting plate. The rotating plate can also have a plurality of installation groove sections which are formed on the upper sides of the outside and inside of the rotating plate. The caster units may include a support roller that is formed on an upper surface of the step portion and rotates along the upper surface of the step portion, and a mounting block that is attached to the mounting groove portions and fixes the support roller.

In one example, an oil supply opening may be formed on a top of the mounting plate through which lubricating oil passes between the mounting plate and the rotating plate.

According to the present exemplary embodiments, the shielding gas is simultaneously supplied and the smoke is extracted in the rotating device by means of a single device, as a result of which the size of the device and the manufacturing costs can be reduced.

In addition, in the rotating device, the rotating plate is combined with the fastening plate by means of the trailing unit, which has a simple structure, so that the rotating plate and the fastening plate can be effortlessly combined and easily detached from one another. This makes repair or maintenance easier.

In addition, the rotary device is attached to the position determination section, whereby the protective gas duct and the smoke exhaust duct can be combined with one another to form concentric circles.

Figure list

• 1 Fig. 12 is a perspective view illustrating a rotating device for supplying protective gas and extracting smoke according to an embodiment of the present invention, the rotating device being mounted on a 3D processing device;
• 2nd FIG. 12 is an exploded perspective view showing a mounting plate and a rotating plate of the rotating device of FIG 1 represents;
• 3rd FIG. 12 is a perspective view showing an exemplary cross section of the rotating device of FIG 1 represents;
• 4th FIG. 12 is a perspective view showing another exemplary cross section of the rotating device of FIG 1 represents;
• 5 FIG. 12 is a cross-sectional view showing a position determining portion of the rotating device of FIG 1 represents;
• 6 Fig. 12 is an exploded perspective view illustrating a mounting plate and a rotating plate of a rotating device for supplying protective gas and extracting smoke according to another embodiment of the present invention;
• 7 FIG. 12 is a perspective view showing an exemplary cross section of the rotating device of FIG 6 represents; and
• 8th FIG. 12 is a perspective view showing another exemplary cross section of the rotating device of FIG 6 represents.

Reference numbers

100:

Mounting plate 200: rotating plate

300:

common channel 500: trailing unit

600:

Shielding gas supply duct 700: smoke exhaust duct

800:

Position determination section 900: sealing section

Detailed description

The invention is described in more detail below with reference to the accompanying drawings, in which embodiments of the invention are shown. However, this invention can be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are designed so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of layers and areas may be exaggerated for clarity. The invention will be described in more detail below with reference to the accompanying drawings, in which embodiments of the invention are shown.

1 FIG. 12 is a perspective view illustrating a rotating device for supplying protective gas and extracting smoke according to an embodiment of the present invention, in which the rotating device is mounted on a 3D processing device. 2nd FIG. 10 is an exploded perspective view showing a mounting plate and a rotating plate of the rotating device of FIG 1 represents.

Regarding 1 and 2nd leads the rotary device to supply protective gas and extract smoke (hereinafter the rotary device 10 ) according to the present exemplary embodiment, the protective gas around a wire, which is melted by a laser beam, and extracts smoke, which arises during laser welding in a laser welding device, a 3D printing device, etc. The rotating device 10 is attached to a 3D processing device 10 which has a head 11 and a wire feeder 12th which is in relation to the head 11 rotates and feeds wire to a focal point of the laser beam. The rotating device 10 includes a mounting plate 100 , a turntable 200 , a common channel 300 ( 3rd ), a sealing section 400 ( 3rd ) and a trailing unit 500 .

The mounting plate 100 is with the head 11 united, and a first through opening 101 is through a central portion of the mounting plate 100 formed so that the laser beam L through the first through opening 101 runs. Here is a fastener 110 on a top of the mounting plate 100 be attached to the mounting plate 100 on the head 11 to fix.

In addition, a first common opening 320 through the top of the mounting plate 100 be formed with what through the first common opening 320 the protective gas is supplied and the smoke can be extracted.

The turntable 200 is with the mounting plate 100 unites and rotates in relation to the mounting plate 100 . Although not shown in the figure, a rotating member can be attached to an underside of the rotating plate 200 be attached, and thus the rotating member is combined with a motor (not shown), and a rotating force of the motor is applied to the rotating plate 200 transfer.

Here, a second through opening 201 with the first through opening 101 is aligned by a central portion of the rotating plate 200 be formed through it.

The turntable 200 and the rotating element can be combined with each other by a bolt or screw combination (not shown), and the wire feed part 12th can be attached to the underside of the rotating element.

So when the rotating member rotates by the operation of the motor, the rotating plate can 200 and the wire feeder 12th rotated at the same time.

In addition, a second common opening 330 through the bottom of the turntable 200 be formed with what through the first common opening 320 the protective gas is supplied and the smoke can be extracted.

The shielding gas is around the wire feeder 12th around through the common channel 300 supplied, and the smoke generated by the laser welding is through the common channel 300 deducted. The common channel 300 includes a channel 310 , the first joint opening 320 and the second common opening 330 .

The channel 310 is on a union surface 102 the mounting plate 100 formed with the turntable 200 is united. The channel 310 is hollowed out around a circumferential direction of the rotary plate 200 formed around, and the turntable 200 is with the mounting plate 100 united so that the channel 310 is enclosed. This is where the shielding gas and smoke inside the duct can be 310 stream.

The first common opening 320 is formed around the top of the mounting plate 100 with the channel 310 to connect, and the protective gas can be externally through the first common opening 320 be fed. In addition, the smoke can come out of the second common opening 330 through the first common opening 320 subtracted from.

The second common opening 330 is formed around the bottom of the turntable 200 with the channel 310 to connect, and the shielding gas that flows into the channel 310 through the first common opening 320 can be fed through the second common opening 330 subtracted from. In addition, smoke can come from outside through the second common opening 330 be fed.

If the common channel 300 In the process of supplying the shielding gas, the shielding gas can pass through the first common opening 320 are supplied from the outside, and the protective gas supplied passes through the channel 310 to go through the second common opening 330 the area around the wire feeder 12th to be fed around.

In addition, flows when the common channel 300 In the smoke extraction process, the smoke generated by the laser welding is used in the second common opening 330 , and the incoming smoke passes through the channel 310 to go through the second common opening 330 to be removed.

3rd FIG. 12 is a perspective view showing an exemplary cross section of the rotating device of FIG 1 represents.

With reference to 3rd is the sealing section 400 between the mounting plate 100 and the turntable 200 formed, which can be used to prevent the shielding gas or smoke escaping through the duct 310 stream. The sealing section 400 includes a first assembly groove 410 , a second mounting groove 420 , a first sealing element 430 and a second sealing element 440 .

The first assembly groove 410 is on the union surface 102 the mounting plate 410 formed, hollowed out along an outside of the channel 310 . The second assembly groove 420 is on the union surface 102 the mounting plate 100 formed, and hollowed out along an inside of the channel 310 .

The first sealing element 430 is on the first assembly groove 410 attached and prevents the shielding gas or smoke flowing through the duct 310 flow, escape to the outside.

The second sealing element 440 is on the second assembly groove 420 attached and prevents the shielding gas or smoke flowing through the duct 310 flow, escape inside.

The first and second sealing element 430 and 440 each has a stretchable or flexible material that has a relatively low coefficient of friction compared to the rotating plate 200 and mounting plate 100 and is able to maintain sufficient sealing force.

The mounting plate 100 and the turntable 200 are combined and thus the first sealing element 430 and second sealing element 440 pressurized. Then the pressurized first and second sealing elements 430 and 440 positioned and through the first and second assembly groove 410 or. 420 pressed together. Consequently, an escape of shielding gas or smoke through the duct 310 flow, can be prevented more efficiently.

In the sealing section 400 blocks the first sealing element 430 the outside of the channel 310 to prevent the shielding gas or smoke flowing through the duct 310 flow, escape to the outside, and the second sealing element 440 blocks the inside of the channel 310 to prevent inert gas or smoke from escaping inside.

Accordingly, the first and second sealing members 430 and 440 together a blocking effect, and thus an escape of shielding gas or smoke that can pass through the duct 430 flow, can be prevented more efficiently.

4th FIG. 12 is a perspective view showing another exemplary cross section of the rotating device of FIG 1 represents.

Regarding 4th can on the rotating device 10 according to the present example, the channel and the mounting groove on the union surface 202 the turntable 200 be educated.

As in 4th the common channel is shown 301 for example a channel 311 , a first common opening 321 and a second common opening 331 .

Here, the channel 311 at the union area 202 the turntable 200 be formed with the mounting plate 100 is united.

In addition, the first joint opening 321 formed to the top of the mounting plate 100 with the channel 311 to connect, and the second common opening 331 is formed around the bottom of the turntable 200 with the channel 311 connect to.

Here the canal 311 , the first joint opening 321 and the second common opening 331 perform essentially the same functions as the channel 310 , the first joint opening 320 and the second common opening 330 that related to 3rd are explained, with the exception of their positions.

Likewise, the sealing section 400 , as in 4th shown in the rotating plate 200 be formed, and it includes a first mounting groove 411 , a second mounting groove 421 , a first sealing element 431 and a second sealing element 441 .

The first assembly groove 411 is on the union surface 202 the turntable 200 formed, and the second mounting groove 421 is on the union surface 202 the turntable 200 educated. The first assembly groove 411 is hollowed out along an outside of the channel 311 at the union area 202 the turntable 200 formed, and the second mounting groove 421 is hollowed out along an inside of the channel 311 at the union area 202 the turntable 200 educated.

In addition, the first sealing element 431 on the first assembly groove 411 attached, and the second sealing element 441 is on the second assembly groove 421 appropriate.

This corresponds to the first assembly groove 411 , the second mounting groove 421 , the first sealing element 431 and the second sealing element 441 essentially the first assembly groove 410 , of the second assembly groove 420 , the first sealing element 430 and the second sealing element 440 in 3rd , with the exception of their positions.

Although not shown in the figure, the channel can cover the entire merging surface 202 the turntable 200 and the union area 102 the mounting plate 100 be formed, and likewise the sealing portion 400 on the entire union area 202 the turntable 200 and union area 102 the mounting plate 100 be educated.

5 FIG. 12 is a cross-sectional view showing a position determining portion of the rotating device of FIG 1 represents.

With reference to 5 can in the present embodiment, the rotating device 10 also a position determining section 800 the first assembly groove 410 , the channel 310 and the second mounting groove 420 arranges to form concentric circles. The positioning section 800 includes a positioning groove 810 , a positioning opening 820 and a positioning pin 830 .

The positioning groove 810 is on the mounting plate 100 formed and from the bottom of the mounting plate 100 hollowed out towards an upper direction.

The position determination opening 820 is in the turntable 200 formed through them continuously.

The positioning pin 830 runs through the position determination opening 820 to use the positioning groove 810 to be united.

When the mounting plate is combined 100 with the turntable 200 becomes the turntable 200 with respect to the mounting plate 100 aligned and the positioning pin 830 runs through the position determination opening 820 , and then the positioning pin 830 with the one in the mounting plate 100 formed positioning groove 810 united. This is the turntable 200 in relation to the mounting plate 100 fixed.

In this condition, the mounting plate 100 and the turntable 200 with each other by means of a trailing unit explained below 500 united, and then are the first assembly groove 410 , the channel 310 and the second mounting groove 420 connected to form concentric circles.

The mounting plate 100 and the turntable 200 are by means of the trailing unit 500 connected together, and the mounting plate 100 will with your head 11 by means of the fastener 110 united, and then the positioning pin 830 removed to the turntable 200 in relation to the mounting plate 100 to turn.

With renewed reference to 3rd enables the trailing unit 500 that the turntable 200 with the mounting plate 100 can be united and rotated. The trailing unit 500 includes a support roller 510 and a mounting block 520 .

For connecting the trailing unit 500 is a step section 120 formed around the outside and inside of the mounting plate 100 protrudes around and several installation groove sections 210 are on the tops of the outside and inside of the turntable 200 educated.

The support roller 510 is on a top of the step section 120 formed and rotates with the rotating plate 200 along the top of the step section 120 .

The mounting block 520 is at the installation groove section 210 set up to support the roll 510 to fix. Here, although not shown in the figure, the mounting block 520 with the installation groove section 210 can be united by an additional union element such as a bolt, a screw etc.

The trailing unit 500 combines the mounting plate 100 with the turntable 200 , and consequently the rotating plate 200 in relation to the mounting plate 100 turn, and the turntable 200 and the mounting plate 100 can be easily detached from each other for repair or the like.

Regarding 6 and 7 a rotating device according to another embodiment is explained below.

6 Fig. 10 is an exploded perspective view illustrating a mounting plate and a rotating plate of a rotating device for supplying protective gas and extracting smoke according to another embodiment of the present invention. 7 FIG. 12 is a perspective view showing an exemplary cross section of the rotating device of FIG 6 shows.

Regarding 6 and 7 the rotating device according to the present embodiment includes a mounting plate 100 , a turntable 200 , a protective gas feed channel 600 , a smoke exhaust duct 700 , a sealing section 900 and a trailing unit 500 .

In the previous embodiment, using a single common Channel 300 in 3rd the protective gas is supplied and the smoke is removed, but in the present exemplary embodiment the protective gas is supplied through the protective gas supply channel 600 fed and the smoke through the smoke exhaust duct 700 deducted.

Thus, according to the present embodiment, the same reference numerals are used for the same elements of the rotating device, and any repetitive description is omitted.

In the present exemplary embodiment there is a protective gas inlet opening 620 through which the protective gas is supplied, a smoke outlet 730 through which the smoke is extracted and a positioning groove 810 formed by the top of the mounting plate 100 formed through. A protective gas outlet opening 630 through which the protective gas is extracted, a smoke suction opening 720 through which the smoke is supplied and a position determining opening 820 are through the bottom of the turntable 200 formed through.

The protective gas feed channel 600 absorbs the shielding gas from the outside and guides it to the area around the wire feed part 12th around, and it includes an inert gas feed channel 610 who have favourited Shielding Gas Inlet 620 and the protective gas outlet opening 630 .

The protective gas feed channel 610 is on the union surface 102 the mounting plate 100 formed with the turntable 200 is united, and is hollowed out along a circumferential direction of the rotary plate 200 educated. In addition, the turntable 200 and the mounting plate 100 united with each other. This is the protective gas feed channel 610 enclosed. The shielding gas supplied from outside can enter the shielding gas supply channel here 610 flow in.

The protective gas inlet opening 620 is formed around the top of the mounting plate 100 with the protective gas feed channel 610 to connect, so that the protective gas can be supplied from the outside.

The shielding gas outlet opening 630 is formed around the bottom of the turntable 200 with the protective gas feed channel 610 to connect, so that the protective gas supply channel 610 supplied protective gas can be withdrawn.

The smoke exhaust duct 700 removes the smoke generated by laser welding and includes a smoke exhaust duct 710 , a smoke vent 720 and a smoke vent 730 .

The smoke exhaust duct 710 is on the union surface 102 the mounting plate with which the rotary plate is united, and is hollowed out along the circumferential direction of the rotary plate 200 educated. In addition, the turntable 200 and the mounting plate 100 united with each other. This is the smoke exhaust duct 710 enclosed. Here the extracted smoke can enter the smoke exhaust duct 710 flow in.

The smoke suction opening 720 is formed around the bottom of the turntable 200 with the smoke exhaust duct 710 to connect so that the smoke can flow in from the outside.

The smoke outlet 730 is formed around the top of the mounting plate 200 with the smoke exhaust duct 710 to connect so that through the smoke exhaust duct 720 supplied smoke can be extracted to the outside.

In the present embodiment, the protective gas supply channel 610 and the smoke exhaust duct 710 arranged to form concentric circles. This will be through the shielding gas supply channel 610 flowing shielding gas and that through the smoke exhaust duct 710 flowing smoke stably supplied or withdrawn.

Here is by uniting the mounting plate 100 with the turntable 200 the turntable 200 in a fixed state with respect to the mounting plate, and thus the shielding gas supply channel 610 and the smoke exhaust duct 710 aligned as concentric circles.

With renewed reference to 5 the rotating device may further include a position determining section 800 have of the protective gas supply channel 610 and the smoke exhaust duct 710 arranges to form concentric circles. The positioning section 800 includes a positioning groove 810 , a positioning opening 820 and a positioning pin 830 .

The positioning groove 810 is formed on the mounting plate and from the bottom of the mounting plate 100 hollowed out towards an upper direction.

The position determination opening 820 is in the turntable 200 formed through this.

The positioning pin 830 runs through the position determination opening 820 to use the positioning groove 810 to be united.

When the mounting plate is combined 100 with the turntable 200 becomes the turntable 200 in relation to the mounting plate 100 aligned, and the positioning pin 830 runs through the Positioning opening 820 , and then the positioning pin 830 with the one in the mounting plate 100 formed positioning groove 810 united. So the turntable 200 in relation to the mounting plate 100 fixed.

In this condition, the mounting plate 100 and the turntable 200 with the help of a trailing unit explained below 500 united, and then there is the inert gas feed channel 610 and the smoke exhaust duct 710 connected to form concentric circles.

The trailing unit 500 in 6 combines the mounting plate 100 with the turntable 200 , and the fastener 110 combines the mounting plate 100 with the head 11 , and then the positioning pin 830 away. As a result, the rotating plate 200 in relation to the mounting plate 100 rotate.

In the present exemplary embodiment, the protective gas feed channel can 610 compared to the smoke exhaust duct 710 be arranged inside, and a cross-sectional area of the smoke exhaust duct 710 can be larger than that of the protective gas feed channel 610 .

Even if, for example, the protective gas is in the wire feed part 12th is properly supplied, the smoke generated when performing the laser welding process is distributed in a work area, so that the smoke exhaust duct 710 compared to the shielding gas feed channel 610 is arranged outside. As a result, the smoke distributed in an outer area of the work area can be easily extracted. In addition, the cross-sectional area of the smoke exhaust duct 710 larger than that of the protective gas supply channel 610 to increase the amount of smoke extracted and to remove the smoke more easily.

As in 7 shown is the sealing section 900 between the mounting plate 100 and the turntable 200 arranged to prevent the shielding gas and the smoke flowing through the shielding gas supply duct 610 and the smoke exhaust duct 710 flow, escape to the outside. The sealing section 900 includes a first assembly groove 910 , a second mounting groove 920 , a third mounting groove 930 , a first sealing element 940 , a second sealing element 950 and a third sealing element 960 .

The first assembly groove 910 is on the union surface 102 the mounting plate 100 formed, and is hollowed out along an outside of the smoke exhaust duct 710 educated.

The second assembly groove 920 is on the union surface 102 the mounting plate 100 formed, and is hollowed out along an inside of the shielding gas supply channel 610 educated.

The third assembly groove 930 is on the union surface 102 the mounting plate 100 formed, and is hollowed out between the protective gas supply channel 610 and the smoke exhaust duct 710 educated.

The first sealing element 940 is on the first assembly groove 910 attached to prevent the smoke from reaching the outside of the smoke exhaust duct 710 escapes.

The second sealing element 950 is on the second assembly groove 920 attached to prevent the shielding gas from reaching the inside of the shielding gas supply duct 610 escapes.

The third sealing element 960 is on the third assembly groove 960 attached to prevent the smoke from entering the inside of the smoke exhaust duct 710 escapes, and to prevent the protective gas to the outside of the protective gas supply channel 610 escapes. The third sealing element 960 prevents the protective gas and smoke from escaping and mixing.

In the sealing section 900 blocks the first sealing element 940 the outside of the smoke exhaust duct 710 to prevent that through the smoke exhaust duct 710 flowing smoke escapes to the outside, and the second sealing element 950 blocks the inside of the shielding gas supply channel 610 to prevent this through the shielding gas supply channel 610 flowing protective gas escapes to the inside.

In addition, the third shielding element blocks 960 the inside of the smoke exhaust duct 710 and at the same time the outside of the protective gas supply duct, and thus is prevented from passing through the smoke exhaust duct 710 pouring smoke into the smoke exhaust duct 710 occurs, and it is prevented from passing through the protective gas feed channel 610 flowing smoke from the protective gas feed channel 610 escapes. As a result, the shielding gas and smoke cannot mix.

The first unfold accordingly Sealing element 940 , the second sealing element 950 and the third sealing element 960 together a blocking effect, and an escape through the protective gas feed channel 610 shielding gas flowing and through the smoke exhaust duct 710 flowing smoke can be completely prevented.

The mounting plate 100 and the turntable 200 are united to form the first sealing element 940 , the second sealing element 950 and the third sealing element 960 to pressurize. The pressurized first to third sealing element 940 , 950 and 960 are on the first to third assembly groove 910 , 920 or. 930 attached, with compressed shapes or states. As a result, this can be prevented more efficiently by the shielding gas supply channel 610 flowing shielding gas and that through the smoke exhaust duct 710 flowing smoke escape.

The trailing unit 500 unites the turntable 200 with the mounting plate 100 , with the turntable 200 in relation to the mounting plate 100 turns. The trailing unit 500 includes the support roller 510 and the mounting block 520 , as mentioned above.

8th FIG. 12 is a perspective view showing another exemplary cross section of the rotating device of FIG 6 represents.

Regarding 8th are on the rotary device according to the present embodiment, the protective gas supply channel, the smoke exhaust channel and the mounting groove on the union surface 202 the turntable 200 educated.

As in 8th shown, includes the protective gas supply channel 601 a protective gas feed channel 611 , an inert gas inlet opening 621 and a protective gas outlet opening 631 .

Here is the shielding gas feed channel 611 at the union area 202 the turntable 200 formed with the mounting plate 100 is united.

In addition, the protective gas inlet opening 621 formed to the top of the mounting plate 100 with the protective gas feed channel 611 to connect and the protective gas outlet opening 631 is formed around the bottom of the turntable 200 with the protective gas feed channel 611 connect to.

The shielding gas feed channel corresponds here 611 who have favourited Shielding Gas Inlet 621 and the protective gas outlet opening 631 essentially the protective gas feed channel 610 , the shielding gas inlet opening 620 and the protective gas outlet opening 630 in 7 , with the exception of their positions.

The smoke duct also includes 701 , as in 8th shown a smoke exhaust duct 711 , a smoke vent 721 and a smoke vent 731 .

The smoke exhaust duct 711 is on the union surface 202 the turntable 200 formed with the mounting plate 100 is united.

In addition, the smoke suction opening 721 formed to the bottom of the turntable 200 with the smoke exhaust duct 711 to connect, and the smoke vent 731 is formed around the top of the mounting plate 200 with the smoke exhaust duct 711 connect to.

Here correspond to the smoke exhaust duct 711 who have favourited Smoke Intake 721 and the smoke vent 731 essentially the smoke exhaust duct 710 , the smoke intake 720 and the smoke vent 730 in 7 , with the exception of their positions.

In addition, as in 8th shown, the sealing section 901 in the turntable 200 formed and includes a first mounting groove 911 , a second mounting groove 921 , a third mounting groove 931 , a first sealing element 941 , a second sealing element 951 and a third sealing element 961 .

The first assembly groove 911 is on the union surface 202 the turntable 200 formed, the second assembly groove 921 is on the union surface 202 the turntable 200 formed, and the third mounting groove 931 is also on the union area 202 the turntable 200 educated.

The first assembly groove 911 is on the union surface 202 the turntable 200 formed, and is hollowed out along an outside of the smoke exhaust duct 711 educated. The second assembly groove 921 is on the union surface 202 the turntable 200 formed, and is hollowed out along an inside of the shielding gas supply channel 611 educated. The third assembly groove 931 is on the union surface 202 the turntable 200 formed, and is hollowed out between the protective gas supply channel 611 and the smoke exhaust duct 711 educated.

In addition, the first sealing element 941 on the first assembly groove 911 attached, the second sealing element 951 is on the second assembly groove 921 attached, and the third sealing element 961 is on the third assembly groove 931 appropriate.

The first assembly groove corresponds here 911 , the second mounting groove 921 , the third mounting groove 931 , the first sealing element 941 , the second sealing element 951 and the third sealing element 961 essentially the first assembly groove 910 , the second mounting groove 920 , the third assembly groove 930 , the first sealing element 940 , the second sealing element 950 and the third Sealing element 960 in 7 , with the exception of their positions.

In the present embodiment, the trailing unit 500 essentially the same as the trailing unit mentioned above.

In addition, although not shown in the figure, the rotary device can have a guide shaft which connects to the protective gas outlet opening 630 of the protective gas feed channel 600 is connected and through the protective gas discharge opening 630 withdrawn protective gas to the wire feed part 12th directs.

Here, the guide shaft rotates with the wire feed part attached to the rotating element 12th , which prevents the guide shaft from being bent.

Although not shown in the figure, there is an oil supply opening at the top of the mounting plate 100 formed to put lubricating oil between the mounting plate 100 and the turntable 200 to get there.

When the lubricating oil is supplied through the oil supply port, the frictional force is between the mounting plate 100 and the turntable 200 reduced, and thus the turntable 200 in relation to the mounting plate 100 turn more smoothly.

According to the present exemplary embodiments, the shielding gas is supplied to the rotating device and the smoke is extracted at the same time and with the aid of a single device, so that the size of the device and the manufacturing costs can be reduced.

In addition, on the rotating device, the rotating plate is combined with the fastening plate by means of a trailing unit, which has a simple structure, so that the rotating plate and the fastening plate can be effortlessly combined and also easily detached from one another. This makes repair or maintenance even easier.

In addition, the rotating device is attached to the position determination section, with which the protective gas duct and the smoke exhaust duct can be combined to form concentric circles.

Although the exemplary embodiments of the present invention have been described, it should be understood that the present invention should not be limited to these exemplary embodiments, but various changes and modifications can be made by those skilled in the art within the spirit and scope of the present invention, as claimed below.

QUOTES INCLUDE IN THE DESCRIPTION

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Patent literature cited

• KR 101674192 [0006]

Claims (18)

A rotating device for supplying protective gas and extracting smoke, the rotating device being attached to a processing device having a head, the rotating device comprising: a mounting plate that is united with the head; a rotating plate that is united with the mounting plate and rotates with the mounting plate; and a common channel, which is formed by a union surface of the rotary plate and / or a union surface of the fastening plate and has a channel for supplying protective gas or extracting smoke. Rotating device after Claim 1 wherein the common channel comprises: a first common opening that connects a top of the mounting plate to the channel and supplies the shielding gas or fumes; and a second common opening that connects an underside of the rotary plate to the duct and draws off the protective gas or supplies the smoke. Rotating device after Claim 1 , further comprising: a sealing portion disposed between the mounting plate and the rotating plate to prevent the shielding gas or smoke from escaping to the outside. Rotating device after Claim 1 wherein the sealing portion includes: a first mounting groove which is hollowed out on the union surface of the rotating plate and / or the union surface of the fastening plate along an outside of the channel; a second mounting groove which is hollowed out on the union surface of the rotating plate and / or the union surface of the mounting plate along an inside of the channel; a first sealing member attached to the first mounting groove; and a second sealing member attached to the second mounting groove. Rotating device after Claim 4 , further comprising: a positioning section that arranges the first mounting groove and second mounting groove to form concentric circles, the positioning section comprising: a positioning groove formed on the mounting plate; a position determination opening formed through the rotary plate; and a locating pin that passes through the locating hole to be mated with the locating groove, the locating pin being removed after the mounting plate is united with the rotating plate. Rotating device after Claim 1 wherein the head emits a laser beam, a first through opening is formed through a central portion of the mounting plate and the laser beam passes through the first through opening, a second through opening that is aligned with the first through opening is formed through a central portion of the rotating plate . A rotating device for supplying protective gas and extracting smoke, the rotating device being attached to a processing device having a head, the rotating device comprising: a mounting plate that is united with the head; a rotating plate which is united with the mounting plate and rotates with the mounting plate; and an inert gas supply channel which is formed by a merging surface of the rotary plate and / or a merging surface of the fastening plate and has an inert gas supply channel which supplies an inert gas; and a smoke exhaust duct, which is formed by the merging surface of the rotary plate and / or the merging surface of the fastening plate and has a smoke exhaust duct for extracting smoke. Rotating device after Claim 7 wherein the shielding gas supply channel includes: a shielding gas inlet opening that connects an upper surface of the mounting plate to the shielding gas supply duct and supplies the shielding gas; and a protective gas outlet opening that connects an underside of the rotary plate to the protective gas supply channel and draws off the protective gas. Rotating device after Claim 7 , wherein the smoke evacuation duct comprises: a smoke suction opening which connects an underside of the rotary plate to the smoke evacuation duct and supplies the smoke; and a smoke vent opening that connects a top of the mounting plate to the smoke exhaust duct and extracts the smoke. Rotating device after Claim 7 , wherein the protective gas supply channel and the smoke exhaust channel form concentric circles. Rotating device after Claim 10 , also showing: a position determining section that arranges the shielding gas supply channel and the smoke exhaust channel to form the concentric circles, the position determining section comprising: a position determining groove formed on the mounting plate; a position determination opening formed through the rotary plate; and a locating pin that passes through the locating hole to be mated with the locating groove, the locating pin being removed after the mounting plate is united with the rotating plate. Rotating device after Claim 7 , wherein a cross-sectional area of the smoke exhaust duct is larger than that of the protective gas supply duct. Rotating device after Claim 7 , further comprising: a sealing portion disposed between the mounting plate and the rotating plate to prevent the shielding gas and smoke flowing through the shielding gas supply duct and the smoke exhaust duct from escaping to the outside. Rotating device after Claim 13 wherein the sealing portion comprises: a first mounting groove which is hollowed out on the merging surface of the rotating plate and / or the merging surface of the fastening plate along an outside of the smoke exhaust duct; a second mounting groove which is hollowed out on the union surface of the rotating plate and / or the union surface of the fastening plate along an inside of the shielding gas supply channel; a third mounting groove which is hollowed out on the merging surface of the rotating plate and / or the merging surface of the fastening plate along the protective gas supply duct and the smoke exhaust duct; a first sealing member attached to the first mounting groove; a second sealing member attached to the second mounting groove; and a third seal member attached to the third mounting groove. Rotating device after Claim 7 wherein the head emits a laser beam, a first through opening is formed through a central portion of the mounting plate and the laser beam passes through the first through opening, a second through opening that is aligned with the first through opening is formed through a central portion of the rotating plate . Rotating device after Claim 1 , also featuring: a trailing unit that rotatably combines the rotating plate with the mounting plate. Rotating device after Claim 16 , wherein the mounting plate further has a step portion that protrudes around an outside and inside of the mounting plate, the rotating plate further has a plurality of mounting groove portions formed on tops of the outside and inside of the rotating plate, the follower unit comprising: one Support roller formed on a top of the step portion and rotating along the top of the step portion; and a mounting block attached to the mounting groove portions and fixing the support roller. Rotating device after Claim 17 , wherein an oil supply opening is formed on an upper side of the mounting plate, through which lubricating oil passes between the mounting plate and the rotating plate.

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