Laser cladding device

Abstract

The utility model belongs to the technical field of laser processing, and discloses a laser cladding device which comprises a laser device and a shielding device fixedly arranged on the outer surface of the laser device, and the laser device comprises a powder feeding component, a laser component and an output port communicating with the powder feeding component and the laser component; the laser device is used for conveying powder provided by the powder feeding component and laser beams provided by the laser component through the output port; the shielding device is used for shielding or releasing an output port of the laser device to realize connection and disconnection of a laser beam and powder of the laser device; according to the laser cladding device, through the shielding device arranged on the outer surface of the laser device, the output port for conveying laser beams and powder can be shielded at the starting time and the ending time of laser processing; therefore, the feeding of the powder and the emission of the laser beam can be synchronously started and ended according to the target powder feeding rate and the target emission power, and the processing quality of the laser cladding device is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of laser processing, and particularly relates to a laser cladding device. BACKGROUND

[0002] When using laser cladding technology to repair parts, powder and laser beams need to be used for processing at the same time, but at the starting point and the ending point of the cladding track (i.e. at the start time and the end time of laser processing), due to the need for a certain start-up time and shutdown time of the powder feeding device and the laser emitting device, the emission efficiency of the laser beam and the powder feeding rate cannot reach a stable processing state at the start time and the end time, and the powder feeding and the laser beam emission cannot start and end simultaneously according to the target powder feeding rate and the target emission power, thus easily causing processing quality defects and affecting the quality of part repair. This defect is an inherent defect of the laser cladding system and cannot be completely eliminated by adjusting the cladding process parameters.

[0003] In view of the above problems, the prior art needs to be improved. INVENTION CONTENTS

[0004] The purpose of the present application is to provide a laser cladding device that can avoid processing quality defects caused by the inability of powder and laser beams to work synchronously according to the target powder feeding rate and the target emission power at the start time and the end time of processing when using laser cladding technology for processing.

[0005] In the first aspect, the present application provides a laser cladding device for laser cladding, comprising a laser device and a shielding device fixedly arranged on the outer surface of the laser device.

[0006] The laser device comprises a powder feeding component and a laser component, and an output port communicating the powder feeding component and the laser component; the laser device is used to deliver the powder provided by the powder feeding component and the laser beam provided by the laser component through the output port;

[0007] The shielding device is used to shield or release the output port of the laser device to realize the on-off of the laser beam and the powder of the laser device.

[0008] The laser cladding device provided by the present application can shield the output port for delivering the laser beam and the powder at the start time and the end time of laser processing through the shielding device arranged on the outer surface of the laser device, so that the powder feeding and the laser beam emission can start and end simultaneously according to the target powder feeding rate and the target emission power, avoiding the powder and the laser beam from working synchronously according to the target powder feeding rate and the target emission power and causing processing quality defects.

[0009] Optionally, the shielding device is arranged on the outer surface of the laser device in an embedded manner.

[0010] Optionally, the shielding device is a rotatable device.

[0011] Optionally, the shielding device comprises a rotating part and a shielding part fixedly connected.

[0012] The shielding part is used for shielding the laser beam and the powder.

[0013] The rotating part is used for adjusting the position of the shielding part in a self-rotating manner.

[0014] The laser cladding device provided by the present application can control the rotating part to drive the shielding part to shield at the start time and the end time of laser processing, and not to shield at other times, so as to control the powder and the laser beam to work synchronously at the start time and the end time of laser processing, and improve the processing quality of laser cladding.

[0015] Optionally, the shielding device further comprises a fixing part; the fixing part is arranged on the outer surface of the laser device; the shielding device is connected with the laser device through the fixing part; and the fixing part is movably connected with the rotating part.

[0016] The fixing part is used for fixing the position of the shielding device and the laser device.

[0017] The laser cladding device provided by the present application can fix the position of the shielding device and the laser device through the fixing part, so that the laser device and the shielding device can move synchronously, and the position adjustment time of the shielding device is reduced.

[0018] Optionally, the fixing part is provided with a clamping groove; and the rotating part is arranged in the clamping groove.

[0019] Optionally, the rotating part is provided with a limiting block; and the limiting block is arranged outside the clamping groove.

[0020] The limiting block is used for fixing the position of the rotating part in the clamping groove.

[0021] Optionally, the shielding part is made of high-temperature-resistant metal.

[0022] Optionally, the thickness of the shielding part is greater than 5 mm.

[0023] Optionally, the outer surface of the shielding part is a diffuse reflection surface.

[0024] From the above, the laser cladding device of the utility model, through the shielding device set in the outer surface of the laser device, can shield the output port of conveying laser beam and powder at the starting time and the ending time of laser processing, so that the delivery of powder and the emission of laser beam can start and end synchronously according to the target powder delivery rate and the target emission power, avoiding the powder and the laser beam from working synchronously according to the target powder delivery rate and the target emission power to produce processing quality defects.

[0025] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or can be learned by practice of the present application. The objects and other advantages of the present application will be realized and attained by means of the instrumentalities particularly pointed out in the written description and claims hereof. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A structure schematic view of a laser cladding device provided by the embodiment of the present application.

[0027] Label explanation: 1, laser device; 2, shielding device; 3, powder feeding part; 4, laser part; 5, output port; 6, rotating part; 7, shielding part; 8, fixed part; 9, limiting block. DETAILED DESCRIPTION

[0028] The embodiment of the utility model is described in detail below, and the examples of the embodiment are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiment described below by referring to the drawings is exemplary and is only used to explain the utility model, and cannot be understood as limiting the utility model.

[0029] The following disclosure provides many different embodiments or examples for implementing the different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the utility model. In addition, the utility model can refer to the same reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed.

[0030] As Figure 1 shown, a laser cladding device of the utility model is used for laser cladding, which comprises a laser device 1 and a shielding device 2 fixedly arranged on the outer surface of the laser device 1.

[0031] The laser device 1 comprises a powder feeding component 3 and a laser component 4, and an output port 5 connecting the powder feeding component 3 and the laser component 4; the laser device 1 is used to deliver the powder provided by the powder feeding component 3 and the laser beam provided by the laser component 4 through the output port 5.

[0032] The shielding device 2 is used to shield or release the output port 5 of the laser device 1, so as to realize the on-off of the laser beam and the powder of the laser device 1.

[0033] In specific applications, the laser device 1 is provided with the output port 5 connecting the powder feeding component 3 and the laser component 4, the output port 5 can deliver the powder provided by the powder feeding component 3 and the laser beam provided by the laser component 4, and converge the powder and the laser beam at a point, so that the point acts on the surface of the workpiece, so as to realize laser cladding.

[0034] The shielding device 2 is used to shield or release the output port 5 of the laser device 1, so as to shield the output port 5 when the laser device 1 starts working and ends working, and release the output port 5 when the laser device 1 is in a stable working state (i.e. the powder is in a target powder feeding rate and the laser beam is in a target emission power), so as to realize the on-off of the laser beam and the powder of the laser device 1.

[0035] The laser cladding device provided by the present application realizes the synchronous working of the powder and the laser beam. By arranging the shielding device on the outer surface of the laser device, the output port delivering the laser beam and the powder can be shielded at the starting time and the ending time of the laser processing, so that the delivery of the powder and the emission of the laser beam can be started and ended synchronously according to the target powder feeding rate and the target emission power, thereby effectively solving the defect problem caused by the asynchronous starting and ending of the delivery of the powder and the emission of the laser beam in the laser cladding process, and significantly improving the processing quality of the laser cladding.

[0036] Specifically, the shielding device 2 is arranged on the outer surface of the laser device 1 in an embedded manner.

[0037] In specific applications, the shielding device 2 can be combined with the laser device 1 in an embedded manner, the embedded connection does not need complex installation steps, and stable connection can be realized through geometric cooperation. By connecting in an embedded manner, it is ensured that the shielding device 2 can effectively shield the laser beam and the powder when the laser device 1 starts working and ends working.

[0038] For example, a protrusion is arranged at the connecting position of the shielding device 2, and a groove (the size and shape of the protrusion and the groove are matched, and the protrusion can also be arranged at the connecting position of the laser device 1, and the groove can be arranged at the connecting position of the shielding device 2) is arranged at the connecting position of the laser device 1. Through the embedded connection of the protrusion and the groove, the laser device 1 and the shielding device 2 can be closely combined. Further, a plurality of groove strips can be arranged in the protrusion, and a plurality of protrusion strips can be arranged at the corresponding positions of the groove strips. Through the mutual cooperation of the groove strips and the protrusion strips, the tightness of the laser device 1 and the shielding device 2 can be improved.

[0039] In some optional embodiments, the laser device 1 and the shielding device 2 can also be connected in a threaded connection manner.

[0040] Specifically, the shielding device 2 is a rotatable device.

[0041] In specific applications, when the laser device 1 starts and ends work, the shielding device 2 adjusts its position through self-rotation to shield the laser beam and the powder, so as to ensure that the powder delivery and the laser beam emission can work synchronously at the start and end time of the laser processing.

[0042] Specifically, the shielding device 2 includes a rotation component 6 and a shielding component 7 connected in a fixed manner.

[0043] The shielding component 7 is used to shield the laser beam and the powder.

[0044] The rotation component 6 is used to adjust the position of the shielding component 7 through self-rotation.

[0045] In specific applications, the shielding component 7 is used to shield the laser beam and the powder, and the rotation component 6 is used to adjust the position of the shielding component 7 through self-rotation. The rotation component 6 can be self-rotated in various ways, for example, the rotation component 6 is arranged in a gear structure, and the position of the shielding component 7 is adjusted by driving the gear to rotate; or the rotation component 6 is arranged in a threaded structure, and the position of the shielding component 7 is adjusted by rotating the thread. Further, the gear or the thread can be driven by an electrically connected motor to control the rotation of the rotation component 6 to drive the position adjustment of the shielding component 7.

[0046] Therefore, the shielding device 2 can flexibly adjust the position of the shielding component 7 through the self-rotation of the rotation component 6, so as to effectively shield the laser beam when the laser device 1 starts and ends work. This design can ensure that the powder delivery and the laser beam emission can start and end synchronously during the laser cladding process, thereby avoiding defects caused by asynchronization and improving the processing quality of the laser cladding.

[0047] In some optional embodiments, the shielding device 2 can be provided as a non-rotatable device, the rotating component 6 is provided as a non-rotatable component, and the connection between the rotating component 6 and the shielding component 7 is provided as a hinged connection. The hinge is driven by a motor to adjust the position of the shielding component 7, so that the shielding component 7 can effectively shield the laser beam and the powder when the laser device starts and ends work.

[0048] Specifically, the shielding device 2 further comprises a fixing component 8; the fixing component 8 is arranged on the outer surface of the laser device 1; the shielding device 2 is connected with the laser device 1 through the fixing component 8; and the fixing component 8 is movably connected with the rotating component 6.

[0049] The fixing component 8 is used to fix the position of the shielding device 2 and the laser device 1.

[0050] In specific applications, the fixing component 8 is arranged on the outer surface of the laser device 1 by embedding or other methods, and is used to fix the position of the shielding device 2 and the laser device 1. The fixing component 8 is movably connected with the rotating component 6, so that the rotating component 6 can adjust the position of the shielding component 7 by self-rotation, and the shielding component 7 can effectively shield the laser beam when the laser device starts and ends work.

[0051] In some optional embodiments, when the rotating component 6 is provided as a non-rotatable device, the fixing component 8 is fixedly connected with the rotating component 6.

[0052] Specifically, the fixing component 8 is provided with a clamping groove; and the rotating component 6 is arranged in the clamping groove.

[0053] In specific applications, the rotating component 6 is arranged in the clamping groove of the fixing component 8. The clamping groove is designed to fix the rotating component 6 and ensure the stable position of the rotating component 6 in the clamping groove, thereby realizing accurate control and stable operation of the shielding device 2. By arranging the rotating component 6 in the clamping groove, the accuracy and stability of the shielding device 2 during the laser cladding process can be ensured.

[0054] The clamping groove can be implemented in various ways, for example, the clamping groove can be designed in the shape of a groove, and the rotating component 6 can be fixed in the clamping groove by sliding or embedding.

[0055] Further, the inner wall of the clamping groove can be provided with anti-skid texture to increase the friction between the rotating component 6 and the clamping groove, thereby improving the stability of the fixation. Alternatively, the inner wall of the clamping groove can be provided with a clamping key to limit the rotation direction and position of the rotating component 6, thereby ensuring accurate control and stable operation of the rotating component 6. In addition, the size and shape of the clamping groove can be customized according to the specific size and shape of the rotating component 6, so as to ensure that the rotating component 6 can be accurately positioned in the clamping groove.

[0056] Specifically, the rotating component 6 is provided with a limiting block 9; the limiting block 9 is arranged outside the clamping groove;

[0057] The limiting block 9 is used to fix the position of the rotating component 6 in the clamping groove.

[0058] In specific applications, the limiting block 9 is arranged outside the clamping groove to fix the position of the rotating component 6 in the clamping groove. The arrangement of the limiting block 9 ensures the stability and accuracy of the rotating component 6 in the clamping groove, thereby ensuring the accurate shielding effect of the shielding device 2 during the operation of the laser device.

[0059] The limiting block 9 can be implemented in various ways, for example, the limiting block 9 can be a protruding structure made of hard material, directly embedded outside the clamping groove, or fixed outside the clamping groove by bolts. The limiting block 9 is designed to be adjustable so as to adjust the range of movement of the rotating component 6 according to different application scenarios.

[0060] Specifically, the shielding component 7 is made of high-temperature-resistant metal.

[0061] In specific applications, the shielding component 7 is made of high-temperature-resistant metal, such as elemental metals such as copper, aluminum, titanium, or alloys composed of steel and various elemental metals. The main advantages of high-temperature-resistant metal include high melting point, small thermal expansion coefficient, good corrosion resistance, and stable mechanical properties at high temperatures. High-temperature-resistant metal can better resist the influence of laser beams to ensure that the shielding component 7 can be used for a long time.

[0062] Specifically, the thickness of the shielding component 7 is greater than 5mm.

[0063] In specific applications, the thickness of the shielding component 7 is greater than 5mm to ensure that the shielding component 7 will not be pierced by the laser beam, thereby ensuring that the shielding component 7 has sufficient strength and durability during the laser cladding process, so that the shielding component 7 effectively shields the laser beam. The thickness of the shielding component 7 can be set according to actual needs.

[0064] The thickness of the shielding component 7 can be achieved by selecting appropriate materials and processing techniques, for example, high-strength alloy materials can be selected, and precise casting or mechanical processing methods can be used to ensure that the thickness is greater than 5mm.

[0065] Specifically, the outer surface of the shielding component 7 is a diffuse reflection surface.

[0066] In a specific application, the outer surface of the shielding component 7 can be provided as a diffuse reflection surface, which can uniformly disperse the energy of the laser beam and reduce local energy concentration, thereby avoiding damage to the laser device caused by the reflected laser beam. The outer surface of the shielding component 7 can be treated by surface treatment techniques such as sandblasting, electrochemical polishing, etc. to form a diffuse reflection surface to achieve the diffuse reflection effect. Alternatively, a coating layer with diffuse reflection characteristics can be applied to the outer surface of the shielding component 7 to enhance its diffuse reflection effect.

[0067] By the technical scheme, the shielding device arranged on the outer surface of the laser device can shield the output port for conveying the laser beam and the powder at the start time and the end time of the laser processing, so that the powder feeding and the laser beam emission can be synchronized to start and end according to the target powder feeding rate and the target emission power, avoiding the powder and the laser beam from being unable to work synchronously according to the target powder feeding rate and the target emission power, thereby effectively solving the defect problem caused by the powder feeding and the laser beam emission starting and ending asynchronously in the laser cladding process, and significantly improving the processing quality of the laser cladding.

[0068] In the description of the present specification, the description referring to the terms "one embodiment", "certain embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description 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.

[0069] The above only describes some embodiments of the present application. For those skilled in the art, without departing from the inventive concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application.

Claims

1. A laser cladding apparatus for performing laser cladding, characterized by, The laser device (1) and the shielding device (2) fixedly arranged on the outer surface of the laser device (1) are included. The laser device (1) includes a powder feeding component (3) and a laser component (4), and an output port (5) communicating the powder feeding component (3) and the laser component (4); the laser device (1) is used for conveying the powder provided by the powder feeding component (3) and the laser beam provided by the laser component (4) through the output port (5). The shielding device (2) is used for shielding or releasing the output port (5) of the laser device (1) to realize the on-off of the laser beam and the powder of the laser device (1).

2. The laser cladding device of claim 1, wherein, The shielding device (2) is arranged on the outer surface of the laser device (1) in an embedded manner.

3. The laser cladding device of claim 1, wherein, The shielding device (2) is a rotatable device.

4. The laser cladding device of claim 3, wherein, The shielding device (2) includes a rotating component (6) and a shielding component (7) fixedly connected; The shielding component (7) is used for shielding the laser beam and the powder; The rotating component (6) is used for adjusting the position of the shielding component (7) in a self-rotating manner.

5. The laser cladding device of claim 4, wherein, The shielding device (2) further includes a fixing component (8); the fixing component (8) is arranged on the outer surface of the laser device (1); the shielding device (2) is connected with the laser device (1) through the fixing component (8); the fixing component (8) is movably connected with the rotating component (6). The fixing component (8) is used for fixing the position of the shielding device (2) and the laser device (1).

6. The laser cladding device of claim 5, wherein, The fixing component (8) is provided with a clamping groove; the rotating component (6) is arranged in the clamping groove.

7. The laser cladding device of claim 6, wherein The rotating component (6) is provided with a limiting block (9); the limiting block (9) is arranged outside the clamping groove. The limiting block (9) is used for fixing the position of the rotating component (6) in the clamping groove.

8. The laser cladding device of claim 4, wherein, The shielding component (7) is made of high-temperature-resistant metal.

9. The laser cladding device of claim 4, wherein, The thickness of the shielding component (7) is greater than 5mm.

10. The laser cladding device of claim 4, wherein, The outer surface of the shielding component (7) is a diffuse reflection surface.

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