Space three-dimensional green repair forming metal remanufacturing system with coaxially arranged light materials

Abstract

The invention relates to the technical field of laser cladding, in particular to a space three-dimensional green repair forming metal remanufacturing system with coaxially arranged light materials. Comprising a laser cladding nozzle, an adjustable nozzle module connected to one end of a powder conveying pipe in the laser cladding nozzle, a gas cylinder used for conveying gas into the adjustable nozzle module, a pressure relief module used for discharging the gas in the adjustable nozzle module and a CCD camera module used for monitoring the state of a molten pool on a substrate in real time. Through cooperation of the adjustable nozzle module, the gas cylinder and the pressure relief module, the adjustable nozzle module can adjust the size of a nozzle in real time according to the part forming requirement, then stacking type green repairing of formed parts with different section sizes is achieved, the operation steps are greatly simplified, the forming period is shortened, cost reduction and efficiency improvement are achieved, and the production efficiency is improved. Meanwhile, by means of the design of the CCD camera module, it is guaranteed that the cladding precision of the formed material piece is always kept at a high standard, and the quality of the formed material piece is effectively guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cladding, and in particular to a spatial three-dimensional green repair forming metal remanufacturing system in which laser materials are coaxially arranged. Background Art

[0002] Now, in the field of advanced manufacturing technology such as laser cladding and 3D printing, it has been found through searching that patent numbers: CN106444049A laser broadband cladding device, CN105562951A a laser light internal wire feeding device for laser cladding, CN107627002A laser cladding device, CN107217257A laser cladding device and CN106583726A laser multi-beam cladding device all use a combination of a beam splitter and a focusing lens to separate and focus the laser beam into a rectangular hollow or circular hollow laser beam, and then the laser cladding material enters the hollow area of ​​the spot from one side, so that the laser cladding material ejection flow and the hollow spot are coaxial, thus realizing the coaxial relationship in the light in principle.

[0003] However, the above-mentioned public patent technology has significant drawbacks, as follows: 1. Solidification of the shape of the light spot and the powder jet flow: The shape of the light spot and the powder jet flow cannot be flexibly changed according to the working conditions, and can only be operated in a pre-set fixed manner; thus, the disclosed technical solution is only applicable to laser cladding green repair or three-dimensional forming operations of a single specification shape, and cannot meet the needs of other working conditions (such as variable-section overhanging structural parts, unequal wall thickness structural parts, and variable-section inverted suspended forming); 2. Poor adaptability to functions and working conditions: In the existing patent solutions, the shapes of the light spot and powder flow are difficult to change flexibly according to the working conditions. The functions are relatively single and the types of working conditions that can be adapted are limited. This not only fails to meet the diverse working conditions, but also makes the use cost high; 3. Inconvenient adjustment of powder feeding aperture: In the disclosed patent solution, if the size of the powder feeding aperture needs to be changed, the machine must be stopped to replace nozzles of different diameters. This means that during the cladding green repair process, the nozzle aperture size cannot be adjusted in real time, and thus the size of the powder beam delivered to the molten pool cannot be regulated, which seriously restricts the forming efficiency of complex parts. In some cases, it even makes it difficult to carry out the forming of complex parts. Summary of the invention

[0004] The present invention provides a spatial three-dimensional green repair forming metal remanufacturing system with coaxial arrangement of light materials to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A spatial three-dimensional green repair and forming metal remanufacturing system with coaxially arranged laser materials comprises a laser cladding nozzle, an adjustable nozzle module connected to one end of a powder conveying pipe in the laser cladding nozzle, a gas cylinder for conveying gas to the inside of the adjustable nozzle module, a pressure relief module for discharging gas inside the adjustable nozzle module, and a CCD camera module for real-time monitoring of the state of a molten pool on a substrate, wherein the area monitored by the CCD camera module corresponds to the ejection end of the adjustable nozzle module, the laser beam generated by the laser cladding nozzle is coaxially arranged with the adjustable nozzle module and is used to wrap the adjustable nozzle module, and the adjustable nozzle module reduces the nozzle opening by inputting gas, and increases the nozzle opening by discharging gas.

[0006] Preferably, the adjustable nozzle module includes a nozzle tube connected to one end of the powder conveying pipe, an air cavity opened in the nozzle tube, and an air inlet and an air outlet opened on the surface of the nozzle tube and communicated with the air cavity, the air inlet is used for gas input, and the air outlet is used for gas discharge.

[0007] Preferably, the nozzle tube is made of soft memory material.

[0008] Preferably, the adjustable nozzle module further comprises a sealed heat-insulating shell for arranging the outer wall of the nozzle tube, and the inner wall of the sealed heat-insulating shell is matched with the outer wall of the nozzle tube.

[0009] Preferably, the longitudinal section of the air cavity is ring-shaped.

[0010] Preferably, a first air pipe is connected to the inner side of the air inlet, and one end of the first air pipe away from the air inlet is connected to the gas cylinder, and a second air pipe is connected to the inner side of the air outlet, and one end of the second air pipe away from the air outlet is connected to the pressure relief module.

[0011] Preferably, the laser cladding nozzle includes a connecting plate, an upper cover installed on the connecting plate, a support frame connected to the bottom of the upper cover, a wire feeding tube bracket connected to the support frame, and a collimator mechanism installed on the top of the upper cover, and a beam splitter mechanism and a plurality of reflective focusing mirror mechanisms are installed on the top of the support frame, and the plurality of reflective focusing mirror mechanisms are distributed in an equidistant array with the beam splitter mechanism as the center.

[0012] Preferably, the support frame is provided with a plurality of reflecting light path through holes corresponding one to one with the reflecting focusing mirror mechanism, and the laser beam emitted from the collimator mechanism passes through the beam splitter mechanism and the reflecting focusing mirror mechanism and is projected from the reflecting light path through holes to wrap the adjustable nozzle module.

[0013] Preferably, the CCD camera module includes a camera and a signal transmitter, the CCD camera module is electrically connected to the control modules of the gas cylinder and the pressure relief module respectively, and the CCD camera module is used to control the gas supply of the gas cylinder and the gas release of the pressure relief module.

[0014] Preferably, it also includes a control center and a moving arm, wherein the control center is electrically connected to the control modules of the gas cylinder and the pressure relief module respectively, the control center is used to control the gas supply of the gas cylinder and the gas release of the pressure relief module, and the moving arm is used to drive the laser cladding nozzle to move.

[0015] By adopting the above technical solution, the beneficial effects achieved by the present invention are: In the present invention, through the coordination of the adjustable nozzle module, the gas cylinder and the pressure relief module, the adjustable nozzle module can adjust the nozzle size in real time according to the requirements of part forming, thereby realizing the stacking green repair of formed parts with different cross-sectional sizes, greatly simplifying the operation steps, shortening the forming cycle, and achieving cost reduction and efficiency improvement. At the same time, with the help of the design of the CCD camera module, it also ensures that the cladding accuracy of the formed parts is always maintained at a high standard, effectively ensuring the quality of the formed parts.

[0016] In the present invention, according to the working condition requirements of laser cladding green repair or laser 3D printing forming, the present invention can adaptively adjust the powder flow shape size and the spot size according to the requirements, ensure that the powder flow size and the spot energy size are adaptively adjusted until the working condition requirements are met, improve the forming quality and efficiency, and thus meet the functional diversity requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the front partial cross-sectional structure of the present invention.

[0018] Figure 2 It is a rear view structural schematic diagram of the present invention.

[0019] Figure 3 for Figure 2 Enlarged structural diagram at A in the middle.

[0020] Figure 4 It is a schematic diagram of the control system of the present invention.

[0021] Figure 5 Schematic diagram for comparing the opening sizes of the nozzle tubes of the present invention.

[0022] Figure 6 It is a schematic diagram of the forming of a triangular piece according to the present invention.

[0023] Figure 7 It is a schematic diagram of the forming of a hanging material according to the present invention.

[0024] Figure 8 It is a schematic diagram of the forming of materials with different wall thicknesses according to the present invention.

[0025] Fig. 9 It is a schematic diagram of the forming of an inverted suspended material according to the present invention.

[0026] Fig.10 It is a schematic diagram of the adjustable nozzle module, CCD camera module, gas cylinder and pressure relief module of the present invention.

[0027] In the figure: 1. laser cladding nozzle; 2. powder delivery pipe; 3. adjustable nozzle module; 31. nozzle tube; 32. air cavity; 33. air inlet; 34. air outlet; 4. gas cylinder; 5. pressure relief module; 6. substrate; 7. CCD camera module; 8. sealed and heat-insulating shell; 9. first air pipe; 10. second air pipe; 11. connecting plate; 12. upper cover; 13. support frame; 14. wire feeding tube bracket; 15. collimator mechanism; 16. spectroscope mechanism; 17. reflective focusing mirror mechanism; 18. reflective light path through hole; 19. moving arm. DETAILED DESCRIPTION

[0028] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0029] It should be noted that when an element is referred to as being "assembled on", "installed on", "fixed on" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure. Embodiment 1

[0031] like Figure 1-Figure 10As shown, the present invention provides a spatial three-dimensional green repair forming metal remanufacturing system with coaxial arrangement of laser materials, including a laser cladding nozzle 1, an adjustable nozzle module 3 connected to one end of a powder conveying pipe 2 in the laser cladding nozzle 1, a gas cylinder 4 for conveying high-pressure gas to the inside of the adjustable nozzle module 3, a pressure relief module 5 for discharging the high-pressure gas inside the adjustable nozzle module 3, and a CCD camera module 7 for real-time monitoring of the molten pool state on the substrate 6, wherein the monitoring area of ​​the CCD camera module 7 corresponds to the ejection end of the adjustable nozzle module 3, wherein the CCD camera module 7 includes a camera and a signal transmitter, the CCD camera module 7 is electrically connected to the control modules of the gas cylinder 4 and the pressure relief module 5, respectively, and the CCD camera module 7 is used to control the gas supply of the gas cylinder 4 and the gas release of the pressure relief module 5, and the laser beam generated by the laser cladding nozzle 1 is coaxially arranged with the adjustable nozzle module 3, and is used to wrap the adjustable nozzle module 3.

[0032] Furthermore, the laser cladding nozzle 1 includes a connecting plate 11, an upper cover 12 installed on the connecting plate 11, a support frame 13 connected to the bottom of the upper cover 12, a wire feeding tube bracket 14 connected to the support frame 13, and a collimator mechanism 15 installed on the top of the upper cover 12, and a beam splitter mechanism 16 and a plurality of reflecting and focusing mirror mechanisms 17 are installed on the top of the support frame 13, and the plurality of reflecting and focusing mirror mechanisms 17 are distributed in an array equidistantly with the beam splitter mechanism 16 as the center, wherein the beam splitter in the beam splitter mechanism 16 is provided with at least two beam splitter surfaces, and each of the beam splitter surfaces is a plane, and the reflecting and focusing mirrors in the plurality of reflecting and focusing mirror mechanisms 17 correspond one by one to the beam splitter surfaces on the beam splitter, so as to realize that the reflecting and focusing mirror receives the reflected light beam emitted by the collimator mechanism 15, and simultaneously converts the reflected light beam into a focused light beam.

[0033] As a further step, the support frame 13 is provided with a plurality of reflecting light path through holes 18 corresponding to the reflecting focusing mirror mechanism 17. The laser beam emitted from the collimator mechanism 15 passes through the beam splitter mechanism 16 and the reflecting focusing mirror mechanism 17 and is projected from the reflecting light path through hole 18 to achieve the wrapping of the adjustable nozzle module 3. As a specific example, in combination with Figure 1 As shown, when the laser beam emitted from the collimator mechanism 15 is projected onto the beam splitter of the beam splitter mechanism 16 via the path, the beam splitter can split the laser beam into multiple beams to be projected onto the corresponding reflective focusing mirror of the reflective focusing mirror mechanism 17, and then the laser beam reflected by the reflective focusing mirror is projected to the lower part of the adjustable nozzle module 3 through the reflective light path through hole 18 to form an envelope light spot (combined with Figure 5As shown, it should be noted that, in this embodiment, three focused beams (laser beams) are used as an illustration. In addition, the focused beam generated by the laser cladding nozzle 1 is in a coaxial relationship with the adjustable nozzle module 3 to achieve the wrapping of the adjustable nozzle module 3 and the powder beam, effectively ensuring that the powder flow passing through the adjustable nozzle module 3 can be fully and evenly wrapped by the laser beam, thereby improving the powder utilization rate and forming accuracy.

[0034] It is worth noting that the multi-beam technology formed by the laser cladding nozzle 1 described above is a well-known public technology. For more details, please refer to the public patents cited in the background technology, and this article will not elaborate on this in more detail.

[0035] Combination Figure 2 and Figure 3 As shown, as a further feature, the adjustable nozzle module 3 includes a nozzle tube 31 connected to one end of the powder conveying pipe 2, an air cavity 32 opened in the nozzle tube 31, and an air inlet 33 and an air outlet 34 opened on the surface of the nozzle tube 31 and communicating with the air cavity 32, the air inlet 33 is used for gas input, and the air outlet 34 is used for gas discharge, and the adjustable nozzle module 3 also includes a sealed and heat-insulating outer shell 8 provided on the outer wall of the nozzle tube 31, and the inner wall of the sealed and heat-insulating outer shell 8 is adapted to the outer wall of the nozzle tube 31.

[0036] The air cavity 32 in the adjustable nozzle module 3 reduces the nozzle opening by inputting gas, and conversely, the air cavity 32 in the adjustable nozzle module 3 increases the nozzle opening by discharging gas.

[0037] Combination Figure 2 and Fig.10 As shown, as a further example, the inner side of the air inlet 33 is connected to a first air pipe 9, and the end of the first air pipe 9 away from the air inlet 33 is connected to the gas cylinder 4, and the inner side of the air outlet 34 is connected to a second air pipe 10, and the end of the second air pipe 10 away from the air outlet 34 is connected to the pressure relief module 5. In this solution, the air release of the pressure relief module 5 and the gas supply of the gas cylinder 4 are both operated by receiving signals from the control system (control center or CCD camera module 7). It is worth noting that when implementing how to input the high-pressure gas in the gas cylinder 4 into the air cavity 32 and how to discharge the high-pressure gas in the air cavity 32 into the atmosphere through the pressure relief module 5, those skilled in the art can directly use the existing pump equipment in the outside world, and since the pump equipment is a known technology, it will not be elaborated in detail in this article.

[0038] As a further step, combined Figure 3As shown, the longitudinal section of the air cavity 32 is in a ring shape. Through the design of the annular cavity, when the opening of the nozzle tube 31 opens and closes due to the increase or decrease of the air pressure, it can achieve a more comprehensive and stable response, ensuring that the air pressure acts evenly on the periphery of the opening, effectively avoiding the opening and closing deviation, thereby effectively improving the accuracy of the product forming process and providing a strong guarantee for high-quality production.

[0039] As a further feature, the nozzle tube 31 is a soft memory material. Specifically, the nozzle tube 31 is a soft memory material, so that the material has unique properties, and will be deformed under the action of high-pressure gas, and will gradually recover to the initial shape at a slow and stable speed after the high-pressure gas is discharged, so as to ensure the working stability of the adjustable nozzle module 3, achieve stable cladding of the product, ensure the forming accuracy, and effectively avoid permanent deformation caused by long-term use or complex working conditions. Among them, the soft memory material includes but is not limited to polyurethane sponge, shape memory polymer, shape memory hydrogel and shape memory alloy.

[0040] Combination Figure 4 As shown, as another control implementation, a spatial three-dimensional green repair forming metal remanufacturing system with coaxial arrangement of light materials also includes a control center, which is electrically connected to the control modules of the gas cylinder 4 and the pressure relief module 5 respectively, and the control center is used to control the gas supply of the gas cylinder 4 and the gas release of the pressure relief module 5.

[0041] Combination Figure 2 As shown, as a further example, a spatial three-dimensional green repair forming metal remanufacturing system with coaxial arrangement of optical materials also includes a moving arm 19, which is used to drive the laser cladding nozzle 1 to move. The moving arm 19 adopts existing well-known technology and is not elaborated in detail in this article.

[0042] As a further step, Figure 5 The two figures in the figure are three-beam spot displays corresponding to different opening sizes of the adjustable nozzle module 3, where the opening size of the left figure is 2mm and the opening size of the right figure is 1mm. Figure 5 As is known, the larger the opening, the more powder output. Based on this, the corresponding spot range also needs to be synchronously enlarged. The change in the size of the spot range requires the moving arm 19 to drive the laser cladding nozzle 1 to move a certain distance along the cross-sectional direction to increase the defocus amount, thereby expanding the spot range and ensuring that the increased amount of powder can be completely clad. Conversely, the laser cladding nozzle 1 moves a certain distance along the cross-sectional direction to reduce the defocus amount, thereby reducing the spot range.

[0043] As a further step, Figure 6As shown in the figure, when forming triangular parts, large or even full area coverage can be achieved by changing the size of the powder nozzle. When a complex shape needs to be printed in layers, the same layer of cladding only needs to change the size of the powder nozzle to cover the entire area or most of the area, avoiding repeated cladding of the same layer and improving cladding efficiency and powder utilization.

[0044] like Figure 7 As shown, when forming the overhanging material, the substrate 6 is used as the standard. Starting from the root of the material, the cross-sectional shape of the material is from large to small, so the amount of powder delivered and the size of the light spot also need to change accordingly. The specific production process is as follows: 1. The control center transmits a signal to the pressure relief module 5. After receiving the signal, the pressure relief module 5 reduces the gas pressure inside the air cavity 32 to ensure that the nozzle opening is expanded, so that the powder output is increased; at the same time, the cladding head moves a specific distance along the cross-sectional direction, resulting in an increase in the defocus amount, thereby expanding the coverage range of the light spot to ensure that the additional powder can be fully clad. At the same time, during the entire cladding process, the CCD camera module 7 will monitor the morphology and cross-sectional contour of the molten pool in real time. Once an abnormality is found, the nozzle opening size will be accurately adjusted immediately.

[0045] 2. As the cladding changes, the control center transmits a signal to the gas cylinder 4. After receiving the signal, the gas cylinder 4 increases the gas pressure in the gas cavity 32, causing the nozzle opening to decrease and reducing the powder output. At the same time, the cladding head moves a specific distance along the cross-sectional direction, resulting in a decrease in the defocus amount, narrowing the spot range, ensuring that the spot size matches the powder output, and achieving accurate control of the cladding effect. At the same time, the CCD camera module 7 will monitor the morphology and cross-sectional contour of the molten pool in real time. Once an abnormality is found, the nozzle opening size will be accurately adjusted immediately.

[0046] 3. Finally, the control center transmits a signal to the gas cylinder 4, prompting the gas cylinder 4 to continuously receive the signal and increase the gas pressure in the gas cavity 32, so that the nozzle opening continues to decrease. At the same time, the cladding head continuously moves a specific distance along the cross-sectional direction to ensure that the continuously reduced spot size matches the powder output, and finally achieves the forming of the overhanging material.

[0047] like Figure 8 As shown, when forming materials with different wall thicknesses, the substrate 6 is used as the standard. Starting from one end where the material cross section is larger, the cross-sectional shape of the material changes from large to small and then to large again. Therefore, the amount of powder delivered and the size of the light spot also need to change accordingly. The specific production process is as follows: 1. The control center transmits a signal to the pressure relief module 5. After receiving the signal, the pressure relief module 5 reduces the gas pressure inside the air cavity 32 to ensure that the nozzle opening is expanded, so that the powder output is increased; at the same time, the cladding head moves a specific distance along the cross-sectional direction, resulting in an increase in the defocus amount, thereby expanding the coverage range of the light spot to ensure that the additional powder can be fully clad. At the same time, during the entire cladding process, the CCD camera module 7 will monitor the morphology and cross-sectional contour of the molten pool in real time. Once an abnormality is found, the nozzle opening size will be accurately adjusted immediately.

[0048] 2. As the cladding changes, the control center transmits a signal to the gas cylinder 4. After receiving the signal, the gas cylinder 4 increases the gas pressure in the gas cavity 32, causing the nozzle opening to decrease and reducing the powder output. At the same time, the cladding head moves a specific distance along the cross-sectional direction, resulting in a decrease in the defocus amount, narrowing the spot range, ensuring that the spot size matches the powder output, and achieving accurate control of the cladding effect. At the same time, the CCD camera module 7 will monitor the morphology and cross-sectional contour of the molten pool in real time. Once an abnormality is found, the nozzle opening size will be accurately adjusted immediately.

[0049] 3. Finally, the control center transmits a signal to the pressure relief module 5. After receiving the signal, the pressure relief module 5 reduces the gas pressure inside the air cavity 32 to ensure that the nozzle opening is expanded, so that the powder output is increased; at the same time, the cladding head moves a specific distance along the cross-sectional direction, resulting in an increase in the defocus amount, thereby expanding the coverage range of the light spot to ensure that the additional powder can be fully clad. At the same time, during the entire cladding process, the CCD camera module 7 will monitor the morphology and cross-sectional contour of the molten pool in real time. Once an abnormality is found, the nozzle opening size will be accurately adjusted immediately, and finally the forming of materials with different wall thicknesses can be achieved.

[0050] like Fig. 9 As shown, when forming an inverted suspended material, the substrate 6 is used as the standard. Starting from the top of the material, the cross-sectional area of ​​the material is from large to small, so the amount of powder delivered and the size of the light spot also need to change accordingly. The specific production process is as follows: 1. The control center transmits a signal to the pressure relief module 5. After receiving the signal, the pressure relief module 5 reduces the gas pressure inside the air cavity 32 to ensure that the nozzle opening is expanded, so that the powder output is increased; at the same time, the cladding head moves a specific distance along the cross-sectional direction, resulting in an increase in the defocus amount, thereby expanding the coverage range of the light spot to ensure that the additional powder can be fully clad. At the same time, during the entire cladding process, the CCD camera module 7 will monitor the morphology and cross-sectional contour of the molten pool in real time. Once an abnormality is found, the nozzle opening size will be accurately adjusted immediately.

[0051] 2. As the cladding changes, the control center transmits a signal to the gas cylinder 4. After receiving the signal, the gas cylinder 4 increases the gas pressure in the gas cavity 32, causing the nozzle opening to decrease and reducing the powder output. At the same time, the cladding head moves a specific distance along the cross-sectional direction, resulting in a decrease in the defocus amount, narrowing the spot range, ensuring that the spot size matches the powder output, and achieving accurate control of the cladding effect. At the same time, the CCD camera module 7 will monitor the morphology and cross-sectional contour of the molten pool in real time. Once an abnormality is found, the nozzle opening size will be accurately adjusted immediately.

[0052] 3. Finally, the control center transmits a signal to the pressure relief module 5. After receiving the signal, the pressure relief module 5 reduces the gas pressure inside the air cavity 32 to ensure that the nozzle opening is expanded, so that the powder output is increased; at the same time, the cladding head moves a specific distance along the cross-sectional direction, resulting in an increase in the defocus amount, thereby expanding the coverage range of the light spot to ensure that the additional powder can be fully clad. At the same time, during the entire cladding process, the CCD camera module 7 will monitor the morphology and cross-sectional contour of the molten pool in real time. Once an abnormality is found, the nozzle opening size will be accurately adjusted immediately, and finally the forming of materials with different wall thicknesses can be achieved.

[0053] In summary, this solution, through the coordination of the adjustable nozzle module 3, the gas cylinder 4 and the pressure relief module 5, enables the adjustable nozzle module 3 to adjust the nozzle size in real time according to the requirements of part forming, thereby realizing green repair of stacking forming parts with different cross-sectional sizes, and ensuring that the forming process is simple and fast; at the same time, this solution can also adaptively adjust the powder flow shape size and the spot size according to the working conditions of laser cladding green repair or laser 3D printing forming, to ensure that the powder flow size and the spot energy size are adaptively adjusted until the working conditions are met, thereby improving the forming quality and efficiency and meeting the functional diversity requirements. Embodiment 2

[0054] Combination Figure 1-Figure 10 As shown, the present invention also provides a control method for remanufacturing of spatial three-dimensional green repair forming metal with coaxial arrangement of light materials, comprising the following steps: Step 1: transport the powder from the powder storage tank to the adjustable nozzle module 3 through the powder conveying pipe 2; Step 2: Use the collimator mechanism 15 to emit a laser beam, and make the laser beam pass through the beam splitter mechanism 16 and the reflective focusing lens mechanism 17 and then project to the bottom of the adjustable nozzle module 3 through the reflective light path through hole 18 to form an envelope light spot; Step 3: According to a preset program or a preset screenshot size image, the gas pressure inside the air cavity 32 is controlled to decrease or increase, and at the same time, the moving arm 19 drives the laser cladding nozzle 1 to achieve an adjustable size of the envelope spot coverage range, ensuring that the envelope spot size matches the powder output; Step 4: The gas pressure inside the air cavity 32 is increased to reduce the nozzle opening and reduce the powder output. Conversely, the gas pressure inside the air cavity 32 is reduced to expand the nozzle opening and increase the powder output. This ensures that the powder feeding aperture adjustment of this scheme is simple and quick, and can promote the printing of more complex parts to meet the needs of various working conditions.

[0055] Combination Figure 4 As shown, as a further step, in step three, the control center transmits real-time signal instructions according to a preset program to ensure that the gas cylinder 4 can deliver high-pressure gas to the air cavity 32 of the nozzle tube 31 through the first air pipe 9 after receiving the gas delivery instruction, so that the nozzle opening is reduced due to the increase in pressure inside the air cavity 32, thereby reducing the powder output. At the same time, the control center can also send an exhaust instruction to the pressure relief module 5 according to the preset program to ensure that the pressure relief module 5 can discharge the gas in the air cavity 32 through the second air pipe 10 after receiving the exhaust instruction, so as to increase the nozzle opening due to the reduction in gas pressure inside the air cavity 32, thereby increasing the powder output; during this period, the CCD camera module 7 is used to monitor the morphology and cross-sectional contour of the molten pool in real time, and the real-time image collected is compared with the preset cross-sectional size image; When the cross section is too large, the CCD camera module 7 can send a gas delivery command to the gas cylinder 4 through a signal transmitter, so that the gas cylinder 4 can deliver gas into the gas cavity 32 after receiving the gas delivery command, prompting the high-pressure gas to squeeze the nozzle tube 31 of the soft memory material inward, thereby reducing the nozzle opening; On the contrary, when the cross section is too small, the CCD camera module 7 can send an exhaust command to the pressure relief module 5 through the signal transmitter, so that the pressure relief module 5 can discharge the gas in the air cavity 32 after receiving the exhaust command, so as to make the nozzle tube 31 of the soft memory material recover its shape outward, thereby increasing the nozzle opening; Therefore, this solution controls the nozzle opening to shrink or expand through the control center, and at the same time timely adjusts the nozzle opening size according to the CCD camera module 7, which can meet the use requirements of different working conditions and ensure the forming work of complex parts and the accuracy of the formed parts.

[0056] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A spatial three-dimensional green repair forming metal remanufacturing system with coaxial arrangement of optical materials, characterized in that: The invention comprises a laser cladding nozzle (1), an adjustable nozzle module (3) connected to one end of a powder conveying pipe (2) in the laser cladding nozzle (1), a gas cylinder (4) for conveying gas into the adjustable nozzle module (3), a pressure relief module (5) for discharging gas in the adjustable nozzle module (3), and a CCD camera module (7) for real-time monitoring of the state of a molten pool on a substrate (6); the monitoring area of ​​the CCD camera module (7) corresponds to the ejection end of the adjustable nozzle module (3); the laser beam generated by the laser cladding nozzle (1) is coaxially arranged with the adjustable nozzle module (3) and is used to wrap the adjustable nozzle module (3); the adjustable nozzle module (3) reduces the nozzle opening by inputting gas, and the adjustable nozzle module (3) increases the nozzle opening by discharging gas.

2. The spatial three-dimensional green repair forming metal remanufacturing system with coaxial arrangement of optical materials according to claim 1 is characterized in that: The adjustable nozzle module (3) comprises a nozzle pipe (31) connected to one end of the powder conveying pipe (2), an air cavity (32) opened in the nozzle pipe (31), and an air inlet (33) and an air outlet (34) opened on the surface of the nozzle pipe (31) and communicating with the air cavity (32), wherein the air inlet (33) is used for inputting gas, and the air outlet (34) is used for discharging gas.

3. The spatial three-dimensional green repair forming metal remanufacturing system with coaxial arrangement of optical materials according to claim 2 is characterized in that: The nozzle tube (31) is made of soft memory material.

4. The spatial three-dimensional green repair forming metal remanufacturing system with coaxial arrangement of optical materials according to claim 2 is characterized in that: The adjustable nozzle module (3) further comprises a sealed heat-insulating shell (8) for arranging the outer wall of the nozzle tube (31), and the inner wall of the sealed heat-insulating shell (8) is adapted to the outer wall of the nozzle tube (31).

5. The spatial three-dimensional green repair forming metal remanufacturing system with coaxial arrangement of optical materials according to claim 2 is characterized in that: The air cavity (32) has a ring shape in its longitudinal section.

6. The spatial three-dimensional green repair forming metal remanufacturing system with coaxial arrangement of optical materials according to claim 2 is characterized in that: The inner side of the air inlet (33) is connected to a first air pipe (9), and one end of the first air pipe (9) away from the air inlet (33) is connected to the gas cylinder (4), and the inner side of the air outlet (34) is connected to a second air pipe (10), and one end of the second air pipe (10) away from the air outlet (34) is connected to the pressure relief module (5).

7. The spatial three-dimensional green repair forming metal remanufacturing system with coaxial arrangement of optical materials according to claim 1 is characterized in that: The laser cladding nozzle (1) comprises a connecting plate (11), an upper cover (12) mounted on the connecting plate (11), a support frame (13) connected to the bottom of the upper cover (12), a wire feeding tube bracket (14) connected to the support frame (13), and a collimator mechanism (15) mounted on the top of the upper cover (12), and a beam splitter mechanism (16) and a plurality of reflective focusing mirror mechanisms (17) are mounted on the top of the support frame (13), and the plurality of reflective focusing mirror mechanisms (17) are arranged in an equidistant array with the beam splitter mechanism (16) as the center.

8. The spatial three-dimensional green repair forming metal remanufacturing system with coaxial arrangement of optical materials according to claim 7 is characterized in that: The support frame (13) is provided with a plurality of reflection light path through holes (18) corresponding one to one with the reflection focusing mirror mechanism (17); the laser beam emitted from the collimator mechanism (15) passes through the beam splitter mechanism (16) and the reflection focusing mirror mechanism (17) and is then projected from the reflection light path through holes (18) to wrap the adjustable nozzle module (3).

9. The spatial three-dimensional green repair forming metal remanufacturing system with coaxial arrangement of optical materials according to claim 1 is characterized in that: The CCD camera module (7) comprises a camera and a signal transmitter, the CCD camera module (7) is electrically connected to the control modules of the gas cylinder (4) and the pressure relief module (5), respectively, and the CCD camera module (7) is used to control the gas supply of the gas cylinder (4) and the gas release of the pressure relief module (5).

10. The spatial three-dimensional green repair forming metal remanufacturing system with coaxial arrangement of optical materials according to claim 1 is characterized in that: It also includes a control center and a motion arm (19), wherein the control center is electrically connected to the control modules of the gas cylinder (4) and the pressure relief module (5), respectively, and the control center is used to control the gas supply of the gas cylinder (4) and the gas release of the pressure relief module (5), and the motion arm (19) is used to drive the laser cladding nozzle (1) to move.

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