CN215356190U - Anti-oxidation device for laser additive - Google Patents
Anti-oxidation device for laser additive Download PDFInfo
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- CN215356190U CN215356190U CN202121710868.2U CN202121710868U CN215356190U CN 215356190 U CN215356190 U CN 215356190U CN 202121710868 U CN202121710868 U CN 202121710868U CN 215356190 U CN215356190 U CN 215356190U
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Abstract
The utility model provides a laser additive material anti-oxidation device, which relates to the technical field of laser additive material manufacturing and comprises a cavity and a protective cover, wherein the cavity is of a semi-closed structure, the protective cover made of fireproof soft cloth is covered at an opening of the cavity, the protective cover is provided with an opening, the opening is suitable for extending into a laser head, and the cavity is suitable for placing a workpiece to be machined and introducing protective gas. According to the laser additive material anti-oxidation device, the closed space formed by the cavity and the protective cover effectively isolates the external air, the protective gas filled in the cavity forms atmosphere protection on a workpiece to be processed, the oxidation phenomenon in the laser additive material process is effectively avoided, and the processing quality of a product is improved; meanwhile, the protective cover can prevent high-temperature metal particles generated in the laser material increase process from burning out parts.
Description
Technical Field
The utility model relates to the technical field of laser additive manufacturing, in particular to a laser additive anti-oxidation device.
Background
The laser additive manufacturing technology is based on the idea of calculus, adopts laser as an energy source, carries out laser cladding layer by layer on preset or synchronously fed metal powder, and prepares an entity part layer by layer in a material adding mode. The existing laser material increase is generally carried out in a semi-closed environment or air, and a metal material is easy to oxidize under a high-temperature condition to cause the reduction of the plasticity of the material and the generation of defects, thereby causing the reduction of the overall quality of a cladding layer.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a laser additive material anti-oxidation device to solve the technical problem that metal materials are easy to oxidize in the existing laser additive material process.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
the laser additive anti-oxidation device comprises a cavity and a protective cover, wherein the cavity is of a semi-closed structure, the protective cover made of fireproof soft cloth covers an opening of the cavity, an opening is formed in the protective cover and is suitable for extending into a laser head, and the cavity is suitable for placing a workpiece to be machined and introducing protective gas.
According to the laser additive anti-oxidation device, the external environment can be effectively isolated through the closed space formed by the cavity and the protective cover, the protective gas is introduced into the cavity, the laser head extends into the cavity from the opening on the protective cover to perform additive operation on a workpiece to be machined, so that sufficient protective atmosphere is ensured in the laser machining process, the workpiece to be machined is not oxidized at high temperature, and the machining quality is high; and the protective cover made of the fireproof soft cloth can effectively seal the periphery of the laser head through flexible deformation, and prevent parts from being burnt out, such as splashing, high-temperature metal particles and the like generated in the laser material increase process.
Optionally, the cross-sectional area of the protective cover is gradually reduced from the side close to the cavity to the side provided with the opening.
Optionally, the protective cover includes a plurality of fireproof soft cloth structures connected in sequence, and the bottom of each fireproof soft cloth structure is detachably connected with each corresponding side wall of the cavity.
Optionally, the outside of the protective cover is coated with a plastic layer.
Optionally, an air inlet is arranged on one side of the cavity, and the cavity is suitable for introducing shielding gas from the air inlet.
Optionally, the laser additive anti-oxidation device further comprises an oxygen content analysis tester, an electric control switch and a PID controller, wherein the oxygen content analysis tester is communicated with the cavity, the electric control switch is arranged at the air inlet hole to control the on-off of the shielding gas, and the electric control switch is electrically connected with the oxygen content analysis tester through the PID controller.
Optionally, the laser additive anti-oxidation device further comprises a flow meter, and the flow meter is arranged at the air inlet.
Optionally, the laser additive anti-oxidation device further comprises a pressure detection device and an exhaust valve, an air outlet is formed in one side, opposite to the air inlet, of the cavity, the pressure detection device and the exhaust valve are arranged at the air outlet, and when the pressure detection device detects that the pressure in the cavity reaches a set value, the exhaust valve is opened to start exhaust.
Optionally, the laser additive anti-oxidation device further comprises an observation window, the observation window is arranged on at least one side wall of the cavity, and the observation window is made of filter glass.
Optionally, the bottom of the cavity is provided with a fixing groove, and the cavity is suitable for being mounted on the processing table through the fixing groove.
Drawings
Fig. 1 is a schematic structural diagram of a laser additive anti-oxidation device according to an embodiment of the utility model;
fig. 2 is a sectional view of a laser additive oxidation prevention device according to an embodiment of the present invention.
Description of reference numerals:
1. a cavity; 11. an air inlet; 12. an air outlet; 13. fixing grooves; 2. a flow meter; 3. an oxygen content analysis tester; 4. an observation window; 5. a workpiece to be processed; 6. a pressure detection device; 7. a protective cover; 71. and (4) opening.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "coupled" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, in the description of the present invention, it should be noted that terms such as "upper", "lower", "front", "rear", and the like in the embodiments indicate orientation words, which are used for simplifying the description of the positional relationship based on the drawings of the specification, and do not represent that elements, devices, and the like which are referred to must operate according to the operation, method, and configuration which are specified and defined in the specification, and such orientation terms do not constitute a limitation of the present invention.
Herein, a coordinate system XYZ is provided, wherein a forward direction of the X-axis represents a right direction, a backward direction of the X-axis represents a left direction, a forward direction of the Y-axis represents a front direction, a backward direction of the Y-axis represents a rear direction, a forward direction of the Z-axis represents an upper direction, and a backward direction of the Z-axis represents a lower direction.
As shown in fig. 1-2, the laser additive anti-oxidation device according to the embodiment of the utility model comprises a cavity 1 and a protective cover 7, wherein the cavity 1 is of a semi-closed structure, the protective cover 7 made of fireproof soft cloth is covered at an opening of the cavity 1, an opening 71 is arranged on the protective cover 7, the opening 71 is suitable for extending into a laser head, and the cavity 1 is suitable for placing a workpiece 5 to be processed and introducing protective gas.
In the present embodiment, the semi-enclosed chamber 1 and the space formed by the protective cover 7 on the top of the chamber 1 are used to isolate the outside air, so as to form an environment suitable for laser additive manufacturing. An opening 71 is formed right above the protective cover 7 (the upper part is in the direction shown by the Z axis forward direction) so that the laser head can stretch into the opening, and the flexible cloth can be prevented from being burnt by splashing, high-temperature metal particles and the like. The chamber 1 may be filled with an inert gas, such as one or more of argon, nitrogen and carbon dioxide.
Treat that machined part 5 arranges in cavity 1 bottom, the laser head stretches into from opening 71 cavity 1 is inside carries out laser vibration material disk (ing) processing, and the machined part is treated to the inside protective gas of cavity 1 forms atmosphere protection, avoids metal surface oxidation.
Alternatively, the cross-sectional area of the shield 7 gradually decreases from the side close to the cavity 1 to the side provided with the opening 71.
In this embodiment, the laser head extends into the cavity 1 from the opening 71, and the sealing part is firmly bound by a flexible rope, a binding tape and the like to prevent air leakage; the protective cover 7 is made of fireproof soft cloth materials, and free movement of the laser head in the laser material increase process can be guaranteed.
Illustratively, the cavity 1 is a rectangular frame structure with an open top, the protective cover 7 is of an inverted conical structure/platform-shaped structure, the size of the large end face of the platform-shaped structure is the same as that of the top end face of the cavity 1, one side of the large end of the platform-shaped structure is detachably connected with the top of the cavity, and the upper end opening of the protective cover 7 can be reduced by adopting the inverted platform-shaped structure, so that air leakage is avoided as far as possible.
Optionally, the protective cover 7 includes a plurality of fireproof soft cloth structures connected in sequence, and the bottom of each fireproof soft cloth structure is detachably connected to each corresponding side wall of the cavity 1.
In this embodiment, the lateral wall of protection casing 7 is connected by four soft cloth structure of preventing fires that connect gradually and constitutes, every the soft cloth structure of preventing fires is trapezoidal, adjacent two accessible viscous material connects between the soft cloth structure of preventing fires, every the bottom of the soft cloth structure of preventing fires is passed through the bolt fastening on the lateral wall that cavity 1 corresponds.
Optionally, the outside of the protective cover 7 is coated with a plastic layer.
In this embodiment, plastic film has the effect of sealed leak protection gas, can increase the plastic layer in the soft cloth outside of fire prevention, improves the sealing performance of protection casing 7 through the plastic layer, avoids the outer hourglass of the inside protective gas of cavity 1 to and outside air enters into cavity 1 in, make inside oxygen content, the pressure of whole cavity 1 remain stable.
Optionally, an air inlet 11 is disposed on one side of the cavity 1, and the cavity 1 is adapted to introduce shielding gas through the air inlet 11.
In this embodiment, an air inlet hole 11 is formed in a right side wall (the right side is the positive direction of the X axis) of the cavity 1, and protective air is introduced into the cavity 1 through the air inlet hole 11, although one or more air inlet holes 11 may be formed.
Optionally, the laser additive anti-oxidation device further comprises an oxygen content analysis tester 3, an electric control switch and a PID controller, wherein the oxygen content analysis tester 3 is communicated with the cavity 1, the electric control switch is arranged at the air inlet 11 to control the on-off of the shielding gas, and the electric control switch is electrically connected with the oxygen content analysis tester 3 through the PID controller.
In this embodiment, the left side (the left side is the direction indicated by the X axis) of the cavity 1 is connected to an oxygen content analysis tester 3, the oxygen content analysis tester 3 is a commercially available instrument, the oxygen content analysis tester 3 includes a test probe extending into the cavity 1 and a display screen outside the cavity for displaying the oxygen content in real time, and the oxygen content in the cavity 1 is controlled to be less than 50ppm by the oxygen content analysis tester 3.
The air inlet 11 is provided with an electric control switch, the flow of the protective air introduced into the cavity 1 is controlled by the switch of the electric control switch, the oxygen content analysis tester 3 forms feedback connection control with the electric control switch through a PID controller, and the opening of the electric control switch is controlled by feedback according to the detected difference value between the oxygen content value inside the cavity 1 and the preset oxygen content value, so that the flow of the protective air introduced into the cavity 1 is controlled, and the convenience and the accuracy of the control are improved.
Optionally, the laser additive anti-oxidation device further comprises a flow meter 2, and the flow meter 2 is arranged at the air inlet 11.
In this embodiment, the flowmeter 2 is disposed at the shielding gas inlet 11, so as to monitor and control the introduced shielding gas in real time.
Optionally, the laser additive anti-oxidation device further comprises a pressure detection device 6 and an exhaust valve, an air outlet 12 is formed in one side, opposite to the air inlet 11, of the cavity 1, the pressure detection device 6 and the exhaust valve are arranged at the air outlet 12, and when the pressure detection device 6 detects that the pressure in the cavity 1 reaches a set value, the exhaust valve is opened to start exhausting.
In this embodiment, the left side wall of the cavity 1 is provided with an air outlet 12, and the air outlet 12 is opposite to the air inlet 11, so that the air can flow and be discharged smoothly. In order to keep the pressure inside the cavity 1 constant, the air outlet 12 is connected with a pressure detection device 6, the pressure detection device 6 is directly applied in the prior art, the pressure detection device 6 monitors the pressure value inside the cavity 1 in real time, when the pressure value inside the cavity 1 is too large, an exhaust valve at the air outlet 12 is controlled to be opened, the gas inside the cavity 1 can be smoothly exhausted, and the pressure of the gas inside the cavity 1 is controlled to be kept at a constant value; when the pressure value in the cavity 1 is small, the exhaust valve is closed, and protective gas is continuously introduced into the cavity 1 through the air inlet 11 until the preset pressure value is reached, so that the stability of laser material increase processing is ensured.
Optionally, the laser additive anti-oxidation device further comprises an observation window 4, the observation window 4 is arranged on at least one side wall of the cavity 1, and the observation window 4 is made of filter glass.
In this embodiment, the front side (the positive direction that shows of Y axle) and the rear side (the reverse direction that shows of Y axle) of protection casing 7 are equipped with an observation window 4 respectively, and at laser vibration material disk's in-process, the worker's accessible the processing condition is observed to observation window 4 to in time adjustment, observation window 4 adopts filter glass, can filter the light of laser frequency channel, with the eye eyesight to the worker protects. Of course the observation window 4 also can set up on the left and right sides wall of protection casing 7, the quantity and the position of setting up of observation window 4 can be according to the nimble selection of in-service use needs.
Filter glass's overall dimension can set up wantonly, exemplarily, filter glass adopts the rectangle, be equipped with the mounting hole on the lateral wall that protection casing 7 corresponds, filter glass's periphery is passed through the screw or glue and is fixed on the mounting hole, for the improvement filter glass with leakproofness between the 7 lateral walls of protection casing can filter glass's periphery adds the rubber gasket to improve protection casing 7's sealing performance.
Optionally, the bottom of the chamber 1 is provided with a fixing groove 13, and the chamber 1 is adapted to be mounted on a processing table through the fixing groove 13.
In this embodiment, the bottom wall of the cavity 1 may extend a certain length along the X-axis or Y-axis direction, the extension region is provided with a fixing groove 13, the fixing groove 13 is in any shape such as a long strip, a bolt penetrates through the fixing groove to fix the cavity 1 on the processing table, and the fixing groove 13 may facilitate the installation and fixation of the entire laser additive oxidation prevention apparatus.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.
Claims (10)
1. The laser additive anti-oxidation device is characterized by comprising a cavity (1) and a protective cover (7), wherein the cavity (1) is of a semi-closed structure, the protective cover (7) made of fireproof soft cloth is arranged at an opening of the cavity (1) in a covering mode, an opening (71) is formed in the protective cover (7), the opening (71) is suitable for extending into a laser head, and the cavity (1) is suitable for placing a workpiece to be machined (5) and introducing protective gas.
2. The laser additive oxidation prevention device according to claim 1, wherein the cross-sectional area of the protection cover (7) is gradually reduced from a side near the cavity (1) to a side where the opening (71) is provided.
3. The laser additive oxidation prevention device according to claim 2, wherein the protective cover (7) comprises a plurality of fireproof soft cloth structures which are connected in sequence, and the bottom of each fireproof soft cloth structure is detachably connected with each corresponding side wall of the cavity (1).
4. A laser additive oxidation prevention device according to any one of claims 1 to 3, wherein the outside of the protective cover (7) is coated with a plastic layer.
5. The laser additive oxidation prevention device according to claim 1, wherein an air inlet hole (11) is formed in one side of the cavity (1), and the cavity (1) is suitable for introducing a protective gas from the air inlet hole (11).
6. The laser additive oxidation prevention device according to claim 5, further comprising an oxygen content analysis tester (3), an electrical control switch and a PID controller, wherein the oxygen content analysis tester (3) is communicated with the cavity (1), the electrical control switch is arranged at the air inlet hole (11) to control the on-off of the shielding gas, and the electrical control switch is electrically connected with the oxygen content analysis tester (3) through the PID controller.
7. The laser additive oxidation prevention device according to claim 5, further comprising a flow meter (2), wherein the flow meter (2) is disposed at the air inlet hole (11).
8. The laser additive anti-oxidation device according to claim 5, further comprising a pressure detection device (6) and an exhaust valve, wherein an air outlet hole (12) is formed in the cavity (1) on the side opposite to the air inlet hole (11), the pressure detection device (6) and the exhaust valve are arranged at the air outlet hole (12), and when the pressure detection device (6) detects that the pressure in the cavity (1) reaches a set value, the exhaust valve is opened to start exhausting.
9. The laser additive oxidation prevention device according to claim 1, further comprising an observation window (4), wherein the observation window (4) is arranged on at least one side wall of the cavity (1), and the observation window (4) is made of filter glass.
10. The laser additive oxidation prevention device according to claim 1, wherein a fixing groove (13) is formed in the bottom of the cavity (1), and the cavity (1) is suitable for being mounted on a processing table through the fixing groove (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121710868.2U CN215356190U (en) | 2021-07-26 | 2021-07-26 | Anti-oxidation device for laser additive |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121710868.2U CN215356190U (en) | 2021-07-26 | 2021-07-26 | Anti-oxidation device for laser additive |
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| CN215356190U true CN215356190U (en) | 2021-12-31 |
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| CN202121710868.2U Active CN215356190U (en) | 2021-07-26 | 2021-07-26 | Anti-oxidation device for laser additive |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114799230A (en) * | 2022-04-24 | 2022-07-29 | 成都飞机工业（集团）有限责任公司 | Small titanium alloy additive manufacturing atmosphere protection device and using method thereof |
| CN115044899A (en) * | 2022-04-12 | 2022-09-13 | 广东省科学院智能制造研究所 | Laser cladding anti-oxidation device |
| CN115815849A (en) * | 2022-12-13 | 2023-03-21 | 山东大学 | Flexible electronic device fixing mechanism for laser etching and processing device |
| CN117987829A (en) * | 2024-04-07 | 2024-05-07 | 广东中科德弗激光科技有限公司 | High-speed laser cladding equipment and method |
-
2021
- 2021-07-26 CN CN202121710868.2U patent/CN215356190U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115044899A (en) * | 2022-04-12 | 2022-09-13 | 广东省科学院智能制造研究所 | Laser cladding anti-oxidation device |
| CN114799230A (en) * | 2022-04-24 | 2022-07-29 | 成都飞机工业（集团）有限责任公司 | Small titanium alloy additive manufacturing atmosphere protection device and using method thereof |
| CN115815849A (en) * | 2022-12-13 | 2023-03-21 | 山东大学 | Flexible electronic device fixing mechanism for laser etching and processing device |
| CN117987829A (en) * | 2024-04-07 | 2024-05-07 | 广东中科德弗激光科技有限公司 | High-speed laser cladding equipment and method |
| CN117987829B (en) * | 2024-04-07 | 2024-06-04 | 广东中科德弗激光科技有限公司 | High-speed laser cladding equipment and method |
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