CN216237282U - Coaxial powder feeding laser cladding head for laser cladding of inner surface of pipeline part - Google Patents
Coaxial powder feeding laser cladding head for laser cladding of inner surface of pipeline part Download PDFInfo
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- CN216237282U CN216237282U CN202122852653.0U CN202122852653U CN216237282U CN 216237282 U CN216237282 U CN 216237282U CN 202122852653 U CN202122852653 U CN 202122852653U CN 216237282 U CN216237282 U CN 216237282U
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Abstract
The utility model provides a coaxial powder feeding laser cladding head for laser cladding of the inner surface of a pipeline part, which comprises: a laser optical module for obtaining a focused laser beam; the reflector module is arranged at the light outlet end of the laser optical module and used for changing the light path direction of the laser beam; a drawer type protective mirror component is arranged along the changed light path direction of the reflector module, and the drawer type protective mirror component is provided with a protective mirror which can be inserted/pulled for replacement; the nozzle switching module is arranged below the drawer type protective mirror assembly; the coaxial powder feeding nozzle is fixed with the nozzle switching module; one end of the extension plate is fixedly arranged outside the switching module, and a plurality of groups of mounting holes which are used for being connected with the robot connecting flange in an adaptive mode are formed in the direction of the other end of the extension plate. The utility model can effectively avoid the damage of smoke dust to the optical system and quickly and conveniently replace the damaged protective glasses.
Description
Technical Field
The utility model relates to the technical field of laser additive manufacturing, in particular to a coaxial powder feeding laser cladding head for laser cladding of the inner surface of a pipeline part.
Background
In the fields of petroleum and chemical industry, the inner wall of a pipeline part is easily damaged under the corrosion and flushing of internal fluid. With the rise of additive manufacturing technology, the traditional scrapping is developed to the repair direction, in the prior art, the repair or reinforcement of the inner wall surface of the pipeline part is tried in a laser cladding mode, and the metal powder and the surface of the base body are fused together by using a high-energy-density laser beam, so that a high-performance alloy coating is formed on the surface of the base material, and the wear resistance and the corrosion resistance of the surface of the base body are improved.
When the pipeline part is subjected to laser cladding, smoke generated around the pipeline part is accumulated around the cladding head due to the limitation of the structure of the part, so that an optical system is polluted, and the laser cladding head is damaged. In addition, the length of the laser cladding head for laser cladding of the inner hole of the pipeline cannot be flexibly adjusted when the length of the part is changed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a coaxial powder feeding laser cladding head for laser cladding of the inner surface of a pipeline part, which can realize laser cladding of the inner wall of the pipeline part and a narrow space, has a good sealing structure and can effectively avoid the damage of smoke dust to an optical system.
In some implementations, the length of the cladding head can be flexibly adjusted according to different lengths of parts so as to adapt to coaxial powder feeding laser cladding heads with different cladding depths, and the cladding head and the powder feeding nozzle do not need to be repeatedly disassembled and assembled when the inner walls of the parts with different cladding depths are machined.
According to a first aspect of the present invention, a coaxial powder feeding laser cladding head for laser cladding of an inner surface of a pipe part is provided, comprising:
a laser optical module for obtaining a focused laser beam;
the reflecting mirror module is arranged at the light outlet end of the laser optical module, a reflecting mirror which is arranged at an angle of 45 degrees is arranged in the reflecting mirror module, and the reflecting mirror surface of the reflecting mirror faces the laser beam and is used for changing the light path direction of the laser beam; a drawer type protective mirror component is arranged along the changed light path direction of the reflector module, and the drawer type protective mirror component is provided with a protective mirror which can be inserted/pulled for replacement;
the nozzle switching module is arranged below the drawer type protective mirror assembly; and
and the coaxial powder feeding nozzle is fixed with the nozzle switching module.
Preferably, a splash guard is arranged above the coaxial powder feeding nozzle, and in some embodiments, the splash guard is sleeved on the upper part of the coaxial powder feeding nozzle through a hole in the middle of the splash guard.
Preferably, a sealing groove is formed at the upper end of the nozzle adapter module to seal the lower end of the drawer type protective mirror assembly.
Preferably, the nozzle adapter module is internally provided with a water cooling channel and water inlet and outlet holes.
Preferably, the light incident end and the light exit end of the reflector module are both provided with fixed protective lenses.
Preferably, the reflector module is internally provided with an air inlet and an air outlet, and protective air enters the inner cavity from the air inlet and then enters the air outlet on the nozzle switching module from the air outlet to be discharged, so that the interior of the reflector module is kept in a micro-positive pressure state.
Preferably, the mirror module is provided with a temperature sensor for detecting the temperature of the mirror.
Preferably, the laser optical module includes an optical fiber interface, a collimating mirror module, a protective mirror module, a switching module, a light guide tube and a focusing lens module, which are sequentially assembled along a light path direction, and the focusing lens module is connected with a light inlet end of the reflector module.
Preferably, the switching module is provided with a water inlet hole, a water outlet hole, an air inlet hole and an air outlet hole, cooling water and shielding gas enter the interior of the cladding head through the switching module, and are discharged through the water outlet hole and the air outlet hole after circulation.
Preferably, the coaxial powder feeding laser cladding head further comprises an extension plate, one end of the extension plate is fixedly installed outside the adapter module, and a plurality of groups of mounting holes which are used for being connected with the robot connecting flange in an adaptive mode are formed in the body of the extension plate and in the direction towards the other end of the extension plate.
In some embodiments, the extension rod is formed by welding aluminum alloy plates or aluminum profiles, and is provided with a group of cladding head mounting holes (used for being connected and fixed with a switching module of a cladding head) and a plurality of groups of robot connecting flange mounting holes, and the mounting position of the robot connecting flange can be adjusted according to the use condition so as to adapt to different cladding depths.
Compared with the prior art, the coaxial powder feeding cladding head has the remarkable advantages that:
1. the coaxial powder feeding cladding head can realize laser cladding on the inner walls of narrow parts such as pipelines and the like, and compared with a lateral powder feeding inner hole laser cladding head, the coaxial powder feeding cladding head can have better atmosphere protection in the cladding process and realize better cladding effect;
2. when the coaxial powder feeding cladding head is used, the damage of smoke dust and high temperature in the using process can be avoided through the internal cooling arrangement and the protection of the reflector, and the coaxial powder feeding cladding head can be stably used for a long time. (ii) a
3. In the use process of the coaxial powder feeding cladding head, the micro-positive pressure is kept in the reflecting mirror positioned in the smoke gathering area through the protective gas, so that the smoke is prevented from entering and being damaged; meanwhile, the protective glasses positioned in the smoke gathering area adopt a drawer type quick replaceable design, so that quick and convenient replacement can be realized when the protective glasses are damaged;
4. the coaxial powder feeding cladding head can flexibly adjust the length as required so as to be suitable for cladding the inner walls of parts with different depths.
It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of the present disclosure unless such concepts are mutually inconsistent. In addition, all combinations of claimed subject matter are considered a part of the inventive subject matter of this disclosure.
The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of specific embodiments in accordance with the teachings of the present invention.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a schematic view of the overall structure of a coaxial powder feeding cladding head according to an exemplary embodiment of the present invention.
Fig. 2 is a side view of a coaxial powder feed cladding head of an exemplary embodiment of the utility model.
Fig. 3 is a schematic laser path diagram of a coaxial powder feeding cladding head according to an exemplary embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a mirror module of the coaxial powder feeding cladding head according to an exemplary embodiment of the present invention.
Fig. 5 is a schematic view of a drawer-style protective mirror assembly of a coaxial powder feeding cladding head in accordance with an exemplary embodiment of the present invention.
Fig. 6 is an overall structural schematic view of a coaxial powder feeding nozzle of the coaxial powder feeding cladding head according to the exemplary embodiment of the present invention.
Fig. 7 is an exploded view of a coaxial powder feed nozzle of the coaxial powder feed cladding head according to an exemplary embodiment of the present invention.
Fig. 8 is a cross-sectional view of a coaxial powder feed nozzle of a coaxial powder feed cladding head in an exemplary embodiment of the utility model.
Detailed Description
In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings.
In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the utility model. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any one implementation. In addition, some aspects of the present disclosure may be used alone, or in any suitable combination with other aspects of the present disclosure.
Referring to fig. 1 to 3, the coaxial powder feeding laser cladding head for laser cladding of the inner surface of the pipe part according to the exemplary embodiment of the present invention includes a laser optical module, a mirror module 8, a nozzle adapter module 10, and a coaxial powder feeding nozzle 11.
And as shown in connection with fig. 1 and 3, a laser optical module for obtaining a focused laser beam.
And the reflector module 8 is arranged at the light outlet end of the laser optical module. The reflector module is internally provided with a reflector, particularly a copper reflector, which is arranged at an angle of 45 degrees, the reflector surface of the reflector faces to the laser beam and is used for changing the light path direction of the laser beam, and the reflector changes from the horizontal direction to the vertical direction by combining with the drawings shown in fig. 1 and 3, faces to the coaxial powder feeding nozzle 11, passes through the coaxial powder feeding nozzle 11, projects the laser beam onto a part, and carries out laser cladding processing on the powder fed into the inner wall of the part.
In which a slide-in protective mirror assembly 9 is provided along the changed optical path direction of the mirror module 8, as shown in fig. 1, 4 and 5, the slide-in protective mirror assembly is provided with a protective mirror 92 that can be inserted/withdrawn for replacement.
As shown in fig. 1, a nozzle adapter module 10 is mounted below the drawer-style protective mirror assembly.
And the coaxial powder feeding nozzle 11 is fixed with the nozzle switching module 11, namely the coaxial powder feeding nozzle 11 is installed on the laser cladding head through the nozzle switching module 10.
With reference to fig. 1 and 2, as an alternative embodiment, the laser optical module includes an optical fiber interface 1, an optical fiber water-cooling module 2, a collimating mirror module 3, a protective mirror module 4, a switching module 5, a light guide tube 6, and a focusing lens module 7, which are sequentially assembled along a light path direction, where the focusing lens module 7 is connected to a light incident end of a reflector module 8. The optical fiber connector is connected with the optical fiber water cooling module through threads.
Preferably, each module of the laser optical module is positioned by a seam allowance structure.
Referring to fig. 3, an optical fiber is inserted into an optical fiber interface, the optical fiber connector 1 emits laser with a certain divergence angle, the laser passes through the collimating mirror module 3 and then becomes parallel light beams, the parallel light beams sequentially pass through the protective mirror module 4, the switching module 5 and the light guide cylinder 6, and then are focused again after passing through the focusing lens module 7, and the reflector module 8 changes the direction of a light path to reflect a laser beam 15 to the surface of the inner wall of a part for laser cladding processing. The protective lens module 4 and the window type protective lens 9 can prevent the optical system from being polluted by smoke dust in use, and the protective lens can be conveniently replaced after being polluted.
As shown in fig. 1 and 6, a splash guard 12 is disposed on the coaxial powder feeding nozzle 11, and the splash guard is fitted to the upper portion of the nozzle through a middle rectangular hole. The splash guard 12 above the coaxial powder feeding nozzle 11 has holes for the powder feeding pipe and the cooling water pipe to pass through.
In an alternative embodiment, a water cooling device may be added to the splash shield.
And water-cooling cavities and cooling water inlet and outlet holes are formed in the collimating lens module 3 and the focusing lens module 7.
Referring to fig. 1 and 2, during assembly, the splash shield 12 is sleeved on the upper part of the coaxial powder feeding nozzle 11, assembled with the nozzle adapter module 10, inserted into the water inlet and outlet pipe, integrally mounted below the reflector module 8, and inserted into the window type protective mirror 9-2.
Referring to fig. 4, the light entrance end and the light exit end of the reflector module are both provided with fixed protective lenses to protect the copper reflector.
As shown in fig. 5, the slide-in protective mirror assembly 9 includes a support portion 9-1 provided below the mirror module and on opposite sides thereof, the support portion being provided with a rail for inserting and guiding the window protective mirror 9-2, and the slide-in protective mirror assembly being provided with the window protective mirror 9-2 to be replaceable by insertion/withdrawal.
In a preferred embodiment, the adapter module 5 is provided with a water inlet, a water outlet, an air inlet and an air outlet, and cooling water and shielding gas enter the interior of the cladding head through the adapter module and are discharged through the water outlet and the air outlet after circulation.
In the specific implementation process, the shield gas and the cooling water are respectively introduced into the air inlet and the water inlet of the adapter module 5, and the shield gas is introduced into the reflector module 8 and the nozzle adapter module 10 after entering the interior of the cladding head. Wherein, the protective gas that lets in the speculum module 8 is through inside gas pocket circulation gyration switching module 5, is discharged by the exhaust hole on switching module 5, makes to keep the pressure-fired state in the speculum module 8, further prevents that the smoke and dust from getting into the inner chamber, pollutes the speculum.
Optionally, the air inlets on the adapter module are divided into two groups, which respectively provide shielding gas for the coaxial powder feeding nozzle and the reflector module. And introducing the protective gas into the nozzle switching module 10, and allowing the protective gas to enter the center of the coaxial powder feeding nozzle 11 to provide atmosphere protection in the cladding process.
The cooling water flows into the reflector module 8 and the nozzle adapter module 10 from the internal water cooling structure, and the cooling water in the nozzle adapter module 10 flows into the coaxial powder feeding nozzle 11 through the external water pipe. The circulated cooling water is discharged by the switching module 5.
Referring to fig. 1 and 6-8, after being sent out by the carrier gas type powder feeder, the metal powder enters through a powder feeding pipe 11b on a coaxial powder feeding nozzle 11 to form a powder beam, and is converged into a point with a laser beam 15, and the laser beam 15 melts the powder beam and forms a cladding layer on the surface of the part. In the cladding process, the splash guard 12 provides protection for the cladding head external pipeline.
In fig. 6-8, reference numeral 11a denotes a body of the coaxial powder feeding nozzle 11, the coaxial powder feeding nozzle uses a plurality of powder feeding pipes 11b (for example, quartz pipes) to feed powder, a water cooling cavity and cooling water inlet and outlet holes are arranged in the body of the coaxial powder feeding nozzle 11, and the coaxial powder feeding nozzle is connected with the water inlet and outlet holes on the nozzle adapter module through water pipes to achieve the purpose of cooling the nozzle.
Preferably, the nozzle adapter module is internally provided with a water cooling structure and is provided with water inlet and outlet holes.
As shown in fig. 1 and 2, the coaxial powder feeding laser cladding head further includes an extension plate 13, one end of the extension plate is fixedly mounted outside the adapting module, and a plurality of sets of mounting holes for being connected with the robot connecting flange in an adaptive manner are formed in the body of the extension plate and in the direction toward the other end of the extension plate.
When the laser cladding device is assembled and used, the switching module 5 is connected with one end of the extension rod 13, the other end of the extension rod 13 is connected to the robot connecting flange 14, and the position of the robot connecting flange 14 on the extension rod 13 can be adjusted according to different depths of cladding parts. The robot attachment flange 14 is connected to the sixth axis of the robot. Therefore, the installation position of the robot connecting flange can be adjusted according to the use condition so as to adapt to different cladding depths.
In an optional embodiment, the reflector module is provided with a temperature sensor for detecting the temperature of the reflector, and the temperature of the copper reflector can be monitored in the laser cladding processing process.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (10)
1. A coaxial powder feeding laser cladding head for laser cladding of the inner surface of a pipeline part is characterized by comprising:
a laser optical module for obtaining a focused laser beam;
the reflecting mirror module is arranged at the light outlet end of the laser optical module, a reflecting mirror which is arranged at an angle of 45 degrees is arranged in the reflecting mirror module, and the reflecting mirror surface of the reflecting mirror faces the laser beam and is used for changing the light path direction of the laser beam; a drawer type protective mirror component is arranged along the changed light path direction of the reflector module, and the drawer type protective mirror component is provided with a protective mirror which can be inserted/pulled for replacement;
the nozzle switching module is arranged below the drawer type protective mirror assembly; and
and the coaxial powder feeding nozzle is fixed with the nozzle switching module.
2. The coaxial powder feeding laser cladding head for laser cladding of the inner surface of the pipe part according to claim 1, wherein a splash guard is provided above the coaxial powder feeding nozzle.
3. The coaxial powder feeding laser cladding head for laser cladding of the inner surface of the pipeline part as claimed in claim 1, wherein the upper end of the nozzle adapter module is provided with a sealing groove for sealing the lower end of the drawer type protection mirror assembly.
4. The coaxial powder feeding laser cladding head for laser cladding of the inner surface of the pipeline part as claimed in claim 1, wherein the nozzle adapter module is internally provided with a water cooling channel and water inlet and outlet holes.
5. The coaxial powder feeding laser cladding head for laser cladding of the inner surface of the pipeline part as claimed in claim 1, wherein the light inlet end and the light outlet end of the reflector module are both provided with fixed protective lenses.
6. The coaxial powder feeding laser cladding head for laser cladding of the inner surface of the pipeline part as claimed in any one of claims 1 to 5, wherein the reflector module is internally provided with an air inlet hole and an air outlet hole, and protective gas enters the inner cavity through the air inlet hole and then enters the air outlet hole on the nozzle adapter module through the air outlet hole to be discharged, so that the interior of the reflector module is kept in a micro-positive pressure state.
7. The coaxial powder feeding laser cladding head for laser cladding of the inner surface of the pipe part as claimed in claim 1, wherein the reflector module is provided with a temperature sensor for detecting the temperature of the reflector.
8. The coaxial powder feeding laser cladding head for laser cladding of the inner surface of the pipeline part as claimed in claim 1, wherein the laser optical module comprises an optical fiber interface, a collimating mirror module, a protective mirror module, a switching module, a light guide cylinder and a focusing lens module which are sequentially assembled along a light path direction, and the focusing lens module is connected with a light inlet end of the reflector module.
9. The coaxial powder feeding laser cladding head for laser cladding of the inner surface of the pipeline part as claimed in claim 8, wherein the adapter module is provided with a water inlet hole, a water outlet hole, an air inlet hole and an air outlet hole, and cooling water and shielding gas enter the interior of the cladding head through the adapter module and are discharged through the water outlet hole and the air outlet hole after circulation.
10. The coaxial powder feeding laser cladding head for laser cladding of the inner surface of the pipeline part as claimed in claim 8, further comprising an extension plate, wherein one end of the extension plate is fixedly installed outside the adaptor module, and a plurality of sets of mounting holes for being connected with a robot connecting flange in an adaptive manner are formed in a body of the extension plate and in a direction towards the other end of the extension plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122852653.0U CN216237282U (en) | 2021-11-21 | 2021-11-21 | Coaxial powder feeding laser cladding head for laser cladding of inner surface of pipeline part |
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| CN202122852653.0U CN216237282U (en) | 2021-11-21 | 2021-11-21 | Coaxial powder feeding laser cladding head for laser cladding of inner surface of pipeline part |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114107978A (en) * | 2021-11-21 | 2022-03-01 | 南京中科煜宸激光技术有限公司 | Coaxial powder feeding laser cladding head suitable for inner hole laser cladding additive manufacturing |
| CN116024564A (en) * | 2022-11-18 | 2023-04-28 | 广东省科学院智能制造研究所 | Angle-adjustable laser processing head for processing inner surface |
-
2021
- 2021-11-21 CN CN202122852653.0U patent/CN216237282U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114107978A (en) * | 2021-11-21 | 2022-03-01 | 南京中科煜宸激光技术有限公司 | Coaxial powder feeding laser cladding head suitable for inner hole laser cladding additive manufacturing |
| CN116024564A (en) * | 2022-11-18 | 2023-04-28 | 广东省科学院智能制造研究所 | Angle-adjustable laser processing head for processing inner surface |
| CN116024564B (en) * | 2022-11-18 | 2023-11-21 | 广东省科学院智能制造研究所 | Angle-adjustable laser processing head for processing inner surface |
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