CN202763282U - Molten pool gas shield device for carbon dioxide (CO2) laser device - Google Patents
Molten pool gas shield device for carbon dioxide (CO2) laser device Download PDFInfo
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- CN202763282U CN202763282U CN 201220403887 CN201220403887U CN202763282U CN 202763282 U CN202763282 U CN 202763282U CN 201220403887 CN201220403887 CN 201220403887 CN 201220403887 U CN201220403887 U CN 201220403887U CN 202763282 U CN202763282 U CN 202763282U
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- gas
- molten pool
- laser
- length adjustment
- blow head
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Abstract
Provided is a molten pool gas shield device for a carbon dioxide (CO2) laser device. The molten pool gas shield device for the CO2 laser device comprises connecting sleeves which are connected in sequence from up to down in a same shaft mode, a length adjustment cylinder and a blow gas head, wherein a gas storage cavity is formed between the blow gas head and the length adjustment cylinder, a vertical shielding gas curtain is formed around a laser molten pool by the gas storage cavity, and the blow gas head is provided with a horizontal inlet gas pipe which is communicated with the gas storage cavity and inlet gas pipes which can directly blow the shielding gas to the laser molten pool. The molten pool gas shield device for the CO2 laser device has the advantages of being simple in structure, convenient in machine work, and low in cost. The gas blowing by four airflow channels and a gas curtain shielding structure are more suitable for a focusing light path CO2 laser device, the whole length of the molten pool gas shield device for the CO2 laser device can be adjusted, thereby enabling the molten pool gas shield device for the CO2 laser device to be used in a long focal length range. A locking mechanism can prevent the dislocation and the unstable airflow caused by the shaking. Four inlet gas pipes direct to the laser molten pool, the gas utilization ratio is high, and the molten pool shielding effect is good. A groove is installed below the blow gas head, thereby not only reducing the weight, but also avoiding the hurt caused by secondary laser radiation to the operators.
Description
Technical field
The utility model relates to a kind of laser molten pool gas shield device, specifically relates to a kind of CO
2The special-purpose gas protector for smelting pond of laser instrument.
Background technology
Laser cladding is an important process in Laser Surface Modification Technology field, it is by adding coating material at substrate surface, utilize the laser beam of high-energy-density to make it to form the with it overlay of metallurgical binding with the solid method of base material top layer melting and refreezing at substrate surface.Laser cladding can be deposited over low-melting substrate surface with dystectic material, and the material that therefore can be used for laser cladding is quite extensive.
At present, the domestic employed equipment of the deposited processing of large-area laser that carries out mostly is CO
2Gas laser, owing to being equipped with the reflect focalization mirror so that focused light passages is open type, the elements such as airborne oxygen, nitrogen are easy to enter the molten bath with melting bath stirring to be caused polluting, some coating materials or its high-temperature decomposition product are oxidized, lost its intrinsic excellent specific property, so that laser cladding layer serviceability descends.For above-mentioned existing problems; the patent No. is that the Chinese patent of ZL201020599894.8 discloses " a kind of gas shield device for Laser Processing "; but the air inlet of this gas shield device is more; complex structure, production cost are high; and protective gas is not directly to blow to laser molten pool; gas effciency is lower, and is therefore relatively poor for the protection effect of laser molten pool.
Summary of the invention
The purpose of this utility model is for above-mentioned existing problems and deficiency, provide a kind of simple in structure, production cost is low, gas effciency is high, the CO respond well to the protection of laser molten pool
2The special-purpose gas protector for smelting pond of laser instrument.
The technical solution of the utility model is achieved in that
CO described in the utility model
2The special-purpose gas protector for smelting pond of laser instrument; be characterized in comprising the from top to bottom adapter sleeve of sequentially coaxial connection; length adjustment cylinder and blow head; described adapter sleeve; length adjustment cylinder and blow head are structure logical in the above-below direction; wherein said blow head be socketed on the length adjustment cylinder and with the length adjustment cylinder between be formed with and can make the protective gas that blows out around laser molten pool, form the vertical air storing cavity with circular inflatable mouth of protecting gas curtain; be provided with the horizontal air inlet pipe that is connected with this air storing cavity on the described blow head; also be provided with the air inlet pipe that protective gas directly can be blowed to laser molten pool on the described blow head, the gas outlet of described air inlet pipe is positioned at the below inner side of circular inflatable mouth.
In order to make the utility model to the protection better effects if of laser molten pool, effectively to improve the serviceability of laser cladding layer, above-mentioned air inlet pipe is provided with four, and described four air inlet pipe are arranged on the above-mentioned blow head axisymmetrically.Simultaneously, above-mentioned horizontal air inlet pipe is provided with two, and described two horizontal air inlet pipe are arranged on the above-mentioned blow head axisymmetrically.
In order to make air inlet pipe can effectively realize better protecting effect, above-mentioned air inlet pipe is straight tube, and described straight tube from top to bottom, ecto-entad is plugged on the above-mentioned blow head obliquely, and the central shaft of described straight tube and horizontal direction are 45° angle.
In order to prevent that protective gas runs off from the junction, increase use cost, the junction device of above-mentioned blow head and length adjustment cylinder has sealing ring.
In order to satisfy easily the CO of different focal
2The user demand of laser instrument, and prevent that the dislocation and the air-flow that cause because of vibrations are unstable, above-mentioned length adjustment jacket casing is connected on the adapter sleeve and can and can be locked on adapter sleeve by retaining mechanism along the adapter sleeve up-down adjustment.
In order to make use length adjustment of the present utility model convenient, above-mentioned length adjustment cylinder and adapter sleeve are threaded connection.
For the setting that makes retaining mechanism and regulate simple and conveniently, and connect reliably, above-mentioned retaining mechanism is lock-screw, is provided with the connecting hole that is connected for described lock-screw on the above-mentioned length adjustment cylinder.
In order to alleviate overall weight of the present utility model, the injury that can avoid again the secondary laser radiation to cause operating personnel, the bottom of above-mentioned blow head is provided with the groove that is down bowl structure that upper end open is little, lower ending opening is large.
In order to make the easy accessibility between blow head and the length adjustment cylinder, and connect reliably, above-mentioned blow head and length adjustment cylinder are threaded connection fixing.
The utility model compared with prior art has following advantage:
1, simple and reasonable, be convenient to machining, production cost is low;
2, four gas channels are blown and to be added the air curtain type structure and be more suitable for CO in the open type focused light passages
2Use on the laser instrument;
3, the device entire length is adjustable, can guarantee to use in very long focal range, can prevent that with retaining mechanism the dislocation and the air-flow that cause because of vibrations are unstable simultaneously;
4, laser molten pool is directly pointed in the gas outlet of the air inlet pipe of four axial symmetry settings, and gas effciency is high, and the molten bath protection is respond well;
5, blow head below is provided with the groove that is down bowl structure that upper end open is little, lower ending opening is large, both alleviated weight, the injury of having avoided again the secondary laser radiation to cause operating personnel.
Below in conjunction with accompanying drawing the utility model is further described.
Description of drawings
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is cross-sectional view of the present utility model.
Fig. 3 is that the A of Fig. 1 is to structural representation.
The specific embodiment
As shown in Figure 1-Figure 3, CO described in the utility model
2The special-purpose gas protector for smelting pond of laser instrument; the adapter sleeve 1 that comprises from top to bottom sequentially coaxial connection; length adjustment cylinder 2 and blow head 3; and adapter sleeve 1; length adjustment cylinder 2 and blow head 3 are structure logical in the above-below direction; wherein blow head 3 be socketed on the length adjustment cylinder 2 and with length adjustment cylinder 2 between be formed with and can make the protective gas that blows out around laser molten pool, form the vertical air storing cavity 8 with circular inflatable mouth 81 of protecting gas curtain; and be provided with the horizontal air inlet pipe 9 that is connected with this air storing cavity 8 on the blow head 3; also be provided with the air inlet pipe 10 that protective gas directly can be blowed to laser molten pool on the blow head 3 simultaneously; and the gas outlet 101 of air inlet pipe 10 is positioned at the below inner side of circular inflatable mouth 81; and be provided with internal thread, CO in the upper end of adapter sleeve 1
2Laser instrument is connected on the adapter sleeve 1 by this internal thread, so laser beam is to pass through vertically from the inner chamber that adapter sleeve 1, length adjustment cylinder 2 and blow head 3 are connected to form, and last workpiece to be processed surface below blow head 3 forms laser molten pool.In order to make the utility model to the protection better effects if of laser molten pool, effectively to improve the serviceability of laser cladding layer, air inlet pipe 10 is provided with four, and four air inlet pipe 10 are arranged on the blow head 3 axisymmetrically, and air inlet pipe 10 is straight tube, and straight tube be from top to bottom, ecto-entad is plugged on the blow head 3 obliquely, and the central shaft of straight tube and horizontal direction are 45° angle; Simultaneously, horizontal air inlet pipe 9 is provided with two, and two horizontal air inlet pipe 9 are arranged on the blow head 3 axisymmetrically.As shown in Figure 2, horizontal air inlet pipe 9 and air inlet pipe 10 are rigid straight pipe, can be equipped with snap joint by the copper pipe of internal diameter 2mm or steel pipe and make, and each air inlet pipe is inserted respectively blow head 3 bore in the good holes in advance, and get final product with the colloid sealing in interstitial site.In order to prevent that protective gas runs off from the junction, increase use cost, at the junction device of blow head 3 and length adjustment cylinder 2 sealing ring 7 is arranged.In order to satisfy easily the CO of different focal
2The user demand of laser instrument, and prevent that the dislocation and the air-flow that cause because of vibrations are unstable, length adjustment cylinder 2 is socketed on the adapter sleeve 1 and can and can be locked on adapter sleeve 1 by retaining mechanism 6 along adapter sleeve 1 up-down adjustment.And in order to make use length adjustment of the present utility model convenient, length adjustment cylinder 2 is threaded connection with adapter sleeve 1.For the setting that makes retaining mechanism 6 and regulate simple and convenient, and connect reliable, retaining mechanism 6 is lock-screw, and be provided with for the connecting hole 21 that is connected with lock-screw at length adjustment cylinder 2, and in the arranging of reality, connecting hole 21 is provided with two, and is arranged on axisymmetrically on the length adjustment cylinder 2, has been connected respectively a lock-screw at each connecting hole 21.In order to alleviate overall weight of the present utility model, the injury that can avoid again the secondary laser radiation to cause operating personnel, the bottom of blow head 3 is provided with the groove that is down bowl structure 31 that upper end open is little, lower ending opening is large.And in order to make the easy accessibility between blow head 3 and the length adjustment cylinder 2, and connecting reliably, it is fixing that blow head 3 and length adjustment cylinder 2 are threaded connection, and as shown in Figure 2, sealing ring 7 is that device is in the seal groove that the two place, threaded engagement bottom arranges.
During the utility model work; the inert gases such as argon gas divide two-way to flow in the air storing cavity 8 by horizontal air inlet pipe 9; gas forms gas curtain by the circular inflatable mouth 81 of air storing cavity 8 belows; around laser molten pool, form gas shield; the inert gases such as while argon gas divide four tunnel air inlet pipe 10 by the axial symmetry setting to blow to simultaneously laser molten pool; above laser molten pool and by the gas curtain position that axisymmetric air inlet pipe 10 is destroyed, realize gas shield, realize the purpose of laser molten pool and isolate from outer air.
Length adjustment of the present utility model is achieved in that the user demand rotation length adjustment cylinder 2 according to different focal, reduce the cooperation number of turns that is threaded and to increase length of the present utility model, otherwise, increase the cooperation number of turns that is threaded and to shorten length of the present utility model, after determining employed focal length, regulate length of the present utility model so that the center of laser molten pool is pointed in the gas outlet 101 of the air inlet pipe 10 that axial symmetry arranges, screw lock-screw this moment, the relative position of adapter sleeve 1 and length adjustment cylinder 2 is fixed, prevent that the dislocation and the air-flow that cause because of vibrations are unstable, thereby realized length adjustment of the present utility model.
The utility model is described by embodiment, but the utility model is not construed as limiting, with reference to description of the present utility model, other variations of the disclosed embodiments, easily expect such as the professional person for this area, such variation should belong within the utility model claim restricted portion.
Claims (10)
1. CO
2The special-purpose gas protector for smelting pond of laser instrument; it is characterized in that comprising the adapter sleeve (1) of from top to bottom sequentially coaxial connection; length adjustment cylinder (2) and blow head (3); described adapter sleeve (1); length adjustment cylinder (2) and blow head (3) are structure logical in the above-below direction; wherein said blow head (3) be socketed in length adjustment cylinder (2) upper and with length adjustment cylinder (2) between be formed with and can make the protective gas that blows out around laser molten pool, form the vertical air storing cavity with circular inflatable mouth (81) (8) of protecting gas curtain; be provided with the horizontal air inlet pipe (9) that is connected with this air storing cavity (8) on the described blow head (3); also be provided with the air inlet pipe (10) that protective gas directly can be blowed to laser molten pool on the described blow head (3), the gas outlet (101) of described air inlet pipe (10) is positioned at the below inner side of circular inflatable mouth (81).
2. described CO according to claim 1
2The special-purpose gas protector for smelting pond of laser instrument it is characterized in that above-mentioned air inlet pipe (10) is provided with four, and described four air inlet pipe (10) is arranged on axisymmetrically on the above-mentioned blow head (3).
3. described CO according to claim 1 and 2
2The special-purpose gas protector for smelting pond of laser instrument is characterized in that above-mentioned air inlet pipe (10) is straight tube, and described straight tube from top to bottom, ecto-entad is plugged on the above-mentioned blow head (3) obliquely, and the central shaft of described straight tube and horizontal direction are 45° angle.
4. described CO according to claim 1
2The special-purpose gas protector for smelting pond of laser instrument it is characterized in that above-mentioned horizontal air inlet pipe (9) is provided with two, and described two horizontal air inlet pipe (9) is arranged on axisymmetrically on the above-mentioned blow head (3).
5. described CO according to claim 1
2The special-purpose gas protector for smelting pond of laser instrument is characterized in that above-mentioned blow head (3) and the junction device of length adjustment cylinder (2) have sealing ring (7).
6. described CO according to claim 1
2The special-purpose gas protector for smelting pond of laser instrument is characterized in that above-mentioned length adjustment cylinder (2) is socketed in adapter sleeve (1) upper and can and can be locked on adapter sleeve (1) by retaining mechanism (6) along adapter sleeve (1) up-down adjustment.
7. according to claim 1 or 6 described CO
2The special-purpose gas protector for smelting pond of laser instrument is characterized in that above-mentioned length adjustment cylinder (2) and adapter sleeve (1) are threaded connection.
8. described CO according to claim 6
2The special-purpose gas protector for smelting pond of laser instrument is characterized in that above-mentioned retaining mechanism (6) is lock-screw, is provided with on the above-mentioned length adjustment cylinder (2) for the connecting hole (21) that is connected with described lock-screw.
9. described CO according to claim 1
2The special-purpose gas protector for smelting pond of laser instrument is characterized in that the bottom of above-mentioned blow head (3) is provided with the groove that is down bowl structure (31) that upper end open is little, lower ending opening is large.
10. described CO according to claim 1
2The special-purpose gas protector for smelting pond of laser instrument is characterized in that above-mentioned blow head (3) and length adjustment cylinder (2) are threaded connection fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220403887 CN202763282U (en) | 2012-08-15 | 2012-08-15 | Molten pool gas shield device for carbon dioxide (CO2) laser device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220403887 CN202763282U (en) | 2012-08-15 | 2012-08-15 | Molten pool gas shield device for carbon dioxide (CO2) laser device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202763282U true CN202763282U (en) | 2013-03-06 |
Family
ID=47769881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220403887 Expired - Lifetime CN202763282U (en) | 2012-08-15 | 2012-08-15 | Molten pool gas shield device for carbon dioxide (CO2) laser device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202763282U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551740A (en) * | 2013-10-18 | 2014-02-05 | 无锡庆源激光科技有限公司 | Optical fiber laser cutting head for laser cutting system |
| CN104250680A (en) * | 2014-10-21 | 2014-12-31 | 内蒙古北方重工业集团有限公司 | Device and method adopting axial gas blowing to reduce laser surface quenching power |
| CN104708198A (en) * | 2015-03-02 | 2015-06-17 | 大族激光科技产业集团股份有限公司 | Cutting nozzle airflow cavity device and cutting nozzle system |
| CN108857068A (en) * | 2018-06-27 | 2018-11-23 | 西安飞机工业（集团）有限责任公司 | A kind of method for laser welding for aircraft air inlet leading edge thin-wall member |
| CN113652684A (en) * | 2021-07-21 | 2021-11-16 | 武汉理工大学 | Follow-up shape-following laser molten pool protection method |
-
2012
- 2012-08-15 CN CN 201220403887 patent/CN202763282U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551740A (en) * | 2013-10-18 | 2014-02-05 | 无锡庆源激光科技有限公司 | Optical fiber laser cutting head for laser cutting system |
| CN103551740B (en) * | 2013-10-18 | 2015-04-22 | 无锡庆源激光科技有限公司 | Optical fiber laser cutting head for laser cutting system |
| CN104250680A (en) * | 2014-10-21 | 2014-12-31 | 内蒙古北方重工业集团有限公司 | Device and method adopting axial gas blowing to reduce laser surface quenching power |
| CN104708198A (en) * | 2015-03-02 | 2015-06-17 | 大族激光科技产业集团股份有限公司 | Cutting nozzle airflow cavity device and cutting nozzle system |
| CN108857068A (en) * | 2018-06-27 | 2018-11-23 | 西安飞机工业（集团）有限责任公司 | A kind of method for laser welding for aircraft air inlet leading edge thin-wall member |
| CN113652684A (en) * | 2021-07-21 | 2021-11-16 | 武汉理工大学 | Follow-up shape-following laser molten pool protection method |
| CN113652684B (en) * | 2021-07-21 | 2022-08-05 | 武汉理工大学 | Follow-up shape-following laser molten pool protection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171207 Address after: 510651 Changxin Road, Guangzhou, Guangdong, No. 363, No. Patentee after: GUANGDONG INSTITUTE OF NEW MATERIALS Address before: 510651 Changxin Road, Guangzhou, Guangdong, No. 363, No. Patentee before: GUANGZHOU Research Institute OF NON FERROUS METALS |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 510651 Changxin Road, Guangzhou, Guangdong, No. 363, No. Patentee after: Institute of new materials, Guangdong Academy of Sciences Address before: 510651 Changxin Road, Guangzhou, Guangdong, No. 363, No. Patentee before: GUANGDONG INSTITUTE OF NEW MATERIALS |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |