CN210237781U - Coaxial powder feeding laser cladding head with replaceable nozzle - Google Patents
Coaxial powder feeding laser cladding head with replaceable nozzle Download PDFInfo
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- CN210237781U CN210237781U CN201920851742.3U CN201920851742U CN210237781U CN 210237781 U CN210237781 U CN 210237781U CN 201920851742 U CN201920851742 U CN 201920851742U CN 210237781 U CN210237781 U CN 210237781U
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Abstract
The utility model relates to a coaxial powder feeding laser cladding head with a replaceable nozzle, which is used for solving the problems that the powder feeding port of the coaxial powder feeding laser cladding head is easy to have the powder blocking phenomenon and the powder outlet port has large inner diameter due to the friction of metal powder, thus leading to shorter service cycle and high replacement cost of the cladding head. The coaxial powder feeding laser cladding head with the replaceable nozzle comprises a main body part and a nozzle arranged on the main body part; the main body piece and the nozzle are both in frustum-shaped structures, the small end of the main body piece is matched with the large end structure of the nozzle, and the main body piece and the nozzle are detachably connected; the main body piece and the center of the nozzle are provided with a laser channel; the laser channel penetrates from the large end of the main body part to the small end of the nozzle; at least two metal powder input channels are uniformly distributed on the side wall of the main body piece in the circumferential direction, and the metal powder input channels penetrate from the large end to the small end of the main body piece; the side wall of the nozzle is circumferentially and uniformly provided with metal powder output channels which are in one-to-one correspondence with the metal powder input channels of the main body part and have coaxial central shafts.
Description
Technical Field
The invention belongs to the technical field of laser processing equipment, and relates to a coaxial powder feeding laser cladding head with a replaceable nozzle.
Background
Laser cladding is a laser surface modification technique which uses laser to irradiate cladding material (metal powder) to melt a thin layer on the surface of a substrate at the same time, and forms a surface coating which is metallurgically bonded with the substrate after rapid solidification. Laser cladding can be divided into a preset powder feeding mode and a coaxial powder feeding mode according to the powder feeding mode, wherein the preset powder feeding mode is to lay metal powder on the surface of a substrate in advance and then use laser irradiation to melt the metal powder. The coaxial powder feeding mode is also called as a synchronous powder feeding mode, laser and metal powder need to be synchronously fed to the surface of the substrate, and compared with a preset powder feeding mode, the coaxial powder feeding mode has the advantages of high powder utilization rate and smooth and uniform cladding layer.
In industrial production, the coaxial powder feeding laser cladding head is widely applied. The coaxial powder-feeding laser cladding head generally adopts a multi-channel powder feeding mode, the center of the cladding head is a laser beam channel, and metal powder channels are circumferentially distributed around the laser beam and are fed out along a set direction under the action of high-pressure gas. The above-mentioned techniques have mainly the following problems in industrial use:
(1) the powder feeding port of the coaxial powder feeding laser cladding head is easily affected by metal powder sputtering, so that the powder feeding port is easy to hang slag and has a powder blocking phenomenon, and the cladding head needs to be replaced when the powder feeding port is serious;
(2) the powder outlet of the cladding head is washed by the high-speed metal powder for a long time, the powder caliber of the cladding head is gradually increased, and the thickness and the performance of a cladding layer are affected.
The laser cladding head needs to be replaced periodically due to the problems, the processing cost of the cladding head is high, the production efficiency is reduced, and the maintenance cost of equipment is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problems that the powder feeding port of the coaxial powder feeding laser cladding head is easy to have the powder blocking phenomenon and the powder discharging port causes the inner diameter to become large due to the scouring of the metal powder, the service cycle of the cladding head is short, and the cost of replacement is high, and providing the coaxial powder feeding laser cladding head with a replaceable nozzle.
The technical solution of the utility model is that:
a coaxial powder feeding laser cladding head with a replaceable nozzle comprises a main body part and is characterized in that: the nozzle is arranged on the main body piece;
the main body piece and the nozzle are both in frustum-shaped structures, the small end of the main body piece is matched with the large end structure of the nozzle, and the main body piece and the nozzle are detachably connected;
the main body piece and the center of the nozzle are provided with a laser channel; the laser channel penetrates from the large end of the main body part to the small end of the nozzle;
2-4 metal powder input channels are uniformly distributed on the side wall of the main body piece in the circumferential direction, and penetrate from the large end to the small end of the main body piece;
metal powder output channels which are in one-to-one correspondence with the metal powder input channels of the main body part and have coaxial central shafts are uniformly distributed on the side wall of the nozzle in the circumferential direction, and the metal powder output channels penetrate from the large end to the small end of the nozzle;
the inner diameter of the metal powder input channel at the small end face of the main body piece is larger than that of the metal powder output channel.
Further, the main body piece and the nozzle are detachably connected through screws.
Furthermore, the nozzle is circumferentially and evenly provided with 2-5 screw fixing holes, and the main body part is provided with a threaded hole matched with the screw fixing holes.
Furthermore, the inner diameter of a laser channel on the main body part is 2-10mm, the inner diameter of a laser channel on the nozzle is 1-5mm, the inner diameter of a metal powder input channel is 1-5mm, and the inner diameter of a metal powder output channel can be 0.6-2 mm.
Further, the laser channel may be configured as a frustum-shaped structure.
Further, the laser channel may also be provided as a cylindrical structure.
Further, the metal powder input channel can be arranged into a frustum shape or a frustum-like structure.
Further, the metal powder input channel can also be arranged into a cylindrical structure.
Further, the metal powder output channel is of a cylindrical structure.
Further, still including setting up the water-cooling passageway of U-shaped structure on the main part, water-cooling passageway one end is the water inlet, and the other end is the delivery port, and cooling water can circulate in the water-cooling passageway.
The utility model has the advantages that:
(1) the main body part and the nozzle of the coaxial powder feeding laser cladding head with the replaceable nozzle are detachably connected, if the condition that the powder feeding port is seriously hung with slag or the powder feeding channel is internally blocked is generated, the slag hanging of the powder feeding port and the metal powder in the powder feeding channel can be removed by replacing the nozzle, and the nozzle can normally work after maintenance in-situ installation; the nozzle is convenient to maintain and operate, and the time for maintaining the nozzle can be shortened by disassembling the main body part and the nozzle.
(2) The utility model discloses coaxial powder feeding laser cladding head medium nozzle with displaceable nozzle is for dismantling the connection, when powder outlet is by the metal powder friction lead to the internal diameter grow, only needs to change the nozzle and just can solve the problem that the internal diameter becomes big in the powder outlet, the change easy operation of nozzle, and the nozzle cost is lower.
(3) The utility model discloses coaxial powder feeding laser cladding head with displaceable nozzle in the nozzle need not to change whole cladding head for can dismantling the connection when the problem appears, only need dismantle the nozzle and maintain or change, not only easy operation, the time is short, and is with low costs moreover.
Drawings
FIG. 1 is a front view of the coaxial powder feeding laser cladding head with replaceable nozzle of the present invention;
FIG. 2 is a view B-B of FIG. 1;
fig. 3 is a view a-a of fig. 2.
The reference numbers are as follows:
1-main body part, 2-nozzle, 21-laser channel, 22-metal powder input channel, 23-metal powder output channel, 24-screw fixing hole and 25-threaded hole.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
as shown in fig. 1 and 2, the coaxial powder feeding laser cladding head with replaceable nozzle comprises a main body part 1 and a nozzle 2 arranged on the main body part 1;
As shown in fig. 2 and 3, the main body piece 1 and the nozzle 2 are provided with a laser channel 21 in the center; the laser channel 21 penetrates from the large end of the main body piece 1 to the small end of the nozzle 2; the laser channel 21 is in a frustum-shaped or cylindrical structure, and the diameter of the laser channel 21 on the end face of the large end of the main body part 1 is larger than or equal to that of the end face of the small end of the nozzle 2. The inner diameter of the laser channel on the main body part 1 is 2-10mm, and the inner diameter of the laser channel on the nozzle 2 is 1-5 mm.
Four metal powder input channels 22 are uniformly distributed on the side wall of the main body piece 1 in the circumferential direction, and the metal powder input channels 22 penetrate from the large end to the small end of the main body piece 1; the metal powder input channel 22 is of a frustum-like cylindrical structure, and the diameter of the metal powder input channel 22 on the end face of the large end of the main body piece 1 is larger than or equal to that of the end face of the small end of the main body piece 1.
Metal powder output channels 23 which correspond to the metal powder input channels 22 of the main body part 1 one by one and have coaxial central shafts are uniformly distributed on the side wall of the nozzle 2 in the circumferential direction, and the metal powder output channels 23 penetrate from the large end to the small end of the nozzle 2; the metal powder discharge passage 23 has a cylindrical structure.
The inner diameter of the metal powder input channel 22 is 1-5mm, and the inner diameter of the metal powder output channel 23 is 0.6-2 mm.
The inner diameter of the metal powder input channel 22 at the small end face of the main body piece 1 is larger than that of the metal powder output channel 23. The metal powder enters from the metal powder input channel 22 under the pneumatic action and forms a metal powder fluid with higher continuity after being gathered by the metal powder output channel 23 with smaller inner diameter, so that the quality of the metal powder is improved, and the cladding efficiency and the quality of a cladding layer are improved.
Along main part 1 with can also set up the water-cooling passageway of U-shaped structure, water-cooling passageway one end is the water inlet, and the other end is the delivery port, and cooling water gets into from the water inlet, flows out from the delivery port after the circulation in the water-cooling passageway to the cooling laser melts and covers the head.
The above is only the embodiment of the present invention, and is not the limitation of the protection scope of the present invention, all the equivalent structure changes made in the contents of the specification and the drawings, or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A coaxial powder feeding laser cladding head with a replaceable nozzle comprises a main body part (1), and is characterized in that: the device also comprises a nozzle (2) arranged on the main body piece (1);
the main body piece (1) and the nozzle (2) are both in frustum-shaped structures, the small end of the main body piece (1) is matched with the large end structure of the nozzle (2), and the main body piece (1) and the nozzle (2) are detachably connected;
the centers of the main body piece (1) and the nozzle (2) are provided with a laser channel (21); the laser channel (21) penetrates from the large end of the main body piece (1) to the small end of the nozzle (2);
2-4 metal powder input channels (22) are uniformly distributed on the side wall of the main body piece (1) in the circumferential direction, and the metal powder input channels (22) penetrate from the large end to the small end of the main body piece (1);
metal powder output channels (23) which correspond to the metal powder input channels (22) of the main body piece (1) one by one and have coaxial central shafts are uniformly distributed on the side wall of the nozzle (2) in the circumferential direction, and the metal powder output channels (23) penetrate from the large end to the small end of the nozzle (2);
the inner diameter of the metal powder input channel (22) on the small end face of the main body piece (1) is larger than that of the metal powder output channel (23).
2. The coaxial powder feeding laser cladding head with the replaceable nozzle according to claim 1, characterized in that: the main body piece (1) and the nozzle (2) are detachably connected through screws.
3. The coaxial powder feeding laser cladding head with the replaceable nozzle according to claim 2, characterized in that: nozzle (2) circumference equipartition has 2-5 screw fixation hole (24), main part (1) be provided with screw hole (25) of screw fixation hole (24) looks adaptation.
4. The coaxial powder feeding laser cladding head with the replaceable nozzle according to claim 2, characterized in that: the inner diameter of a laser channel on the main body part (1) is 2-10mm, the inner diameter of a laser channel on the nozzle (2) is 1-5mm, the inner diameter of the metal powder input channel (22) is 1-5mm, and the inner diameter of the metal powder output channel (23) can be 0.6-2 mm.
5. The coaxial powder feeding laser cladding head with the replaceable nozzle according to any one of claims 1 to 4, characterized in that: the laser channel (21) is of a frustum-shaped structure.
6. The coaxial powder feeding laser cladding head with the replaceable nozzle according to any one of claims 1 to 4, characterized in that: the laser channel (21) is of a cylindrical structure.
7. The coaxial powder feeding laser cladding head with the replaceable nozzle according to claim 5, characterized in that: the metal powder input channel (22) is of a frustum-shaped or frustum-like structure.
8. The coaxial powder feeding laser cladding head with the replaceable nozzle according to claim 6, characterized in that: the metal powder input channel (22) is of a cylindrical structure.
9. The coaxial powder feeding laser cladding head with the replaceable nozzle according to claim 7, characterized in that: the metal powder output channel (23) is of a cylindrical structure.
10. The coaxial powder feeding laser cladding head with the replaceable nozzle according to claim 9, characterized in that: still including setting up the water-cooling passageway of U-shaped structure on main part spare (1), water-cooling passageway one end is the water inlet, and the other end is the delivery port, and the cooling water can circulate in the water-cooling passageway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920851742.3U CN210237781U (en) | 2019-06-06 | 2019-06-06 | Coaxial powder feeding laser cladding head with replaceable nozzle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920851742.3U CN210237781U (en) | 2019-06-06 | 2019-06-06 | Coaxial powder feeding laser cladding head with replaceable nozzle |
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| CN210237781U true CN210237781U (en) | 2020-04-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111690929A (en) * | 2020-07-01 | 2020-09-22 | 齐鲁工业大学 | Laser cladding head |
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2019
- 2019-06-06 CN CN201920851742.3U patent/CN210237781U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111690929A (en) * | 2020-07-01 | 2020-09-22 | 齐鲁工业大学 | Laser cladding head |
| CN111690929B (en) * | 2020-07-01 | 2022-03-29 | 齐鲁工业大学 | Laser cladding head |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211018 Address after: 710100 No. 3000, Biyuan Second Road, Chang'an District, Xi'an City, Shaanxi Province Patentee after: Shaanxi Zhongke Zhongmei Laser Technology Co.,Ltd. Address before: 710119 No.26, Fazhan Avenue, Chang'an District, Xi'an City, Shaanxi Province Patentee before: XI'AN ZHONGKE ZHONGMEI LASER TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |