Laser cladding powder feeding device and laser cladding equipment

Abstract

The present invention discloses a laser cladding powder feeding device and a laser cladding equipment, and relates to the field of laser cladding technology. The invention aims to solve the technical problems that the laser cladding powder feeding device is prone to alternating irregular powder breaking and powder overflowing phenomena and uneven powder mixing. The laser cladding powder feeding device comprises: a powder feeding barrel and a mixing and stirring assembly; the powder feeding barrel has a feed port and a discharge port; the mixing and stirring assembly comprises a driving part, a stirring part and a blocking member; the driving part extends into the powder feeding barrel along the feed port of the powder feeding barrel; the stirring part is arranged in the powder feeding barrel, and is connected to the driving part, and is used to stir the powder located in the powder feeding barrel near the discharge port under the drive of the driving part; the blocking member is arranged in the powder feeding barrel, and is located on the first side of the stirring part, and is used to block at least part of the powder in the powder feeding barrel on the first side of the stirring part; wherein the first side of the stirring part is the side of the stirring part close to the feed port.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cladding, and in particular to a laser cladding powder feeding device and laser cladding equipment. Background Art

[0002] The laser cladding powder feeding device is an indispensable part of the laser cladding process, including a powder barrel, an inlet and an outlet. The powder barrel is used to load powder. When the powder barrel carries a lot of powder, the powder at the bottom of the barrel is compacted due to the gravity of the powder, making the laser cladding powder feeding device drop powder unevenly, and irregular powder failure and powder overflow will occur alternately. In addition, when using mixed powder, it is easy to cause uneven mixing of powder. Summary of the invention

[0003] The purpose of the present invention is to provide a laser cladding powder feeding device and laser cladding equipment to solve the technical problems that the laser cladding powder feeding device is prone to alternating irregular powder breakage and powder overflow and uneven powder mixing.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] In a first aspect, a laser cladding powder feeding device comprises: a powder feeding barrel and a mixing and stirring assembly; the powder feeding barrel has a feed port and a discharge port; the mixing and stirring assembly comprises a driving part, a stirring part and a blocking member; the driving part extends into the powder feeding barrel along the feed port of the powder feeding barrel; the stirring part is arranged in the powder feeding barrel and is connected to the driving part for stirring the powder in the powder feeding barrel near the discharge port under the driving of the driving part; the blocking member is arranged in the powder feeding barrel and is located on a first side of the stirring part for blocking at least part of the powder in the powder feeding barrel on the first side of the stirring part; wherein the first side of the stirring part is a side of the stirring part close to the feed port.

[0006] Compared with the prior art, the laser cladding powder feeding device provided by the present invention includes a mixing and stirring assembly. The mixing and stirring assembly includes a driving part, a stirring part and a barrier; the driving part extends into the powder feeding barrel along the first end of the powder feeding barrel, and the stirring part is arranged in the powder feeding barrel and is connected to the driving part. Driven by the driving part, the stirring part stirs the powder in the powder feeding barrel, so that the powder in the powder feeding barrel is continuously sent out from the discharge port after being evenly mixed, so as to solve the technical problem of uneven powder mixing that is easy to occur when using mixed powder in the prior art. Furthermore, the barrier is arranged in the powder feeding barrel and is located on the first side of the stirring part, which is used to block at least part of the powder in the powder feeding barrel on the first side of the stirring part; wherein the first side of the stirring part is the side of the stirring part close to the feed port. It can be seen that through the blocking effect of the blocking piece, at least part of the powder in the powder feeding barrel is blocked on the side of the stirring part close to the feed inlet, and only a small part of the powder is located at the bottom of the powder feeding barrel, and the stirring part will stir the powder at the bottom of the powder feeding barrel to loosen the powder at the bottom of the powder feeding barrel, thereby avoiding the powder at the bottom of the powder barrel being compacted due to the gravity of the powder, causing uneven powder falling of the laser cladding powder feeding device, and alternating irregular powder breakage and powder overflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0008] Figure 1 A schematic structural diagram of a laser cladding powder feeding device provided in an embodiment of the present invention;

[0009] Figure 2 A cross-sectional view of a laser cladding powder feeding device provided in an embodiment of the present invention;

[0010] Figure 3 An exploded view of a laser cladding powder feeding device provided in an embodiment of the present invention;

[0011] Figure 4 A detailed structural diagram of a material-moving rod provided in an embodiment of the present invention;

[0012] Figure 5 A partial detailed structural diagram of a stirring member and a powder barrel body provided in an embodiment of the present invention;

[0013] Figure 6 A schematic diagram of a feeding structure provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0014] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0015] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0016] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] The laser cladding powder feeding device is an indispensable part of the laser cladding process, including a powder barrel, an inlet and an outlet. The powder barrel is used to load powder. When the powder barrel carries a lot of powder, the powder at the bottom of the barrel is compacted due to the gravity of the powder, which makes the laser cladding powder feeding device unevenly drop powder, and irregular powder breakage and powder overflow will occur alternately. When the powder in the laser cladding powder feeding device is mixed powder, uneven powder mixing is prone to occur. In addition, during the use of the laser cladding powder feeding device, personnel are required to constantly check the powder residue. This method requires more human intervention and is prone to misjudgment and missed judgment.

[0019] Based on this, refer to Figures 1 to 5 The embodiment of the present invention discloses a laser cladding powder feeding device to solve the above technical problems. The above laser cladding powder feeding device may include: a powder feeding barrel, a feed port located at the first end of the powder feeding barrel, a discharge port 21 located at the second end of the powder feeding barrel, and a mixing and stirring assembly located in the powder feeding barrel. The feed port is used to add powder to the powder feeding barrel, the discharge port 21 is used to feed the powder pan, and the mixing and stirring assembly is used to mix and stir the powder in the powder feeding barrel.

[0020] In a possible implementation, the powder delivery barrel includes a powder barrel cover 2, a powder barrel top barrel 3, a powder barrel body 10, and a powder barrel bottom barrel 11 which are connected in sequence.

[0021] The powder barrel cover 2 is used to seal the powder barrel body 10 and to carry the driving part of the mixing and stirring assembly. The powder barrel cover 2 and the powder barrel top barrel 3 can be connected by snap-fit ​​or threaded, which is not specifically limited in the embodiment of the present invention.

[0022] The side wall of the powder barrel top barrel 3 has a feed port, and the powder barrel top barrel 3 is fixedly connected to the powder barrel body 10. The powder barrel body 10 is used to store powder, and the powder barrel body 10 can be a transparent barrel body to facilitate observation of the powder in the powder barrel. Exemplarily, there is a connecting portion 4 between the powder barrel top barrel 3 and the powder barrel body 10, and the connecting portion 4 is used to achieve a fixed connection between the powder barrel top barrel 3 and the powder barrel body 10.

[0023] There is a gap between the powder barrel body 10 and the powder barrel bottom barrel 11 for powder to fall, so that the powder in the powder barrel body 10 can fall into the powder barrel bottom barrel 11 evenly.

[0024] The powder barrel bottom barrel 11 has a discharge port 21, which is connected to the powder pan. The mixing and stirring assembly mixes and stirs the powder in the powder barrel bottom barrel 11, so that the powder in the powder delivery barrel is uniformly mixed and continuously delivered to the powder pan from the discharge port 21.

[0025] In some embodiments, the mixing and stirring assembly includes a driving part, a stirring part and a blocking member 15. The driving part extends into the powder barrel top barrel 3 along the powder barrel cover 2, and is drivingly connected with the stirring part in the powder barrel top barrel 3. The blocking member 15 is arranged in the powder barrel body 10 to block the powder and prevent excessive powder from entering the powder barrel bottom barrel 11.

[0026] The driving part may include a driving member 1 and a connecting member 12 that are connected to each other. The connecting member 12 extends into the powder barrel top barrel 3 through the powder barrel cover 2 and is connected to the stirring part. The driving member 1 may be arranged on the powder barrel cover 2 .

[0027] Exemplarily, the driving member 1 can be a motor, and the connecting member 12 is a coupling. The motor is mounted on the powder barrel cover 2, one end of the coupling is connected to the output shaft of the motor, and the other end is connected to the stirring part, which is used to drive the stirring part to stir the powder under the drive of the motor.

[0028] The stirring part includes a stirring rod 17, at least one material-dispensing member and a stirring member 20. One end of the stirring rod 17 is connected to the connecting member 12 in the powder barrel top barrel 3, and the other end of the stirring rod 17 passes through the powder barrel body 10 and is connected to the stirring member 20 located at the powder barrel bottom barrel 11. At least one material-dispensing member can be located in the powder barrel bottom barrel 11 and is arranged on the stirring rod 17 along the circumference of the stirring rod 17.

[0029] In order to ensure the stability of the stirring rod 17, the stirring part may further include a stirring rod shaft sleeve 14 sleeved on the stirring rod 17, and a stirring rod 17 rotary sleeve 13 disposed in the powder barrel top barrel 3. The stirring rod 17 rotary sleeve 13 may be clamped at the bottom of the powder barrel top barrel 3 to fix the stirring rod shaft sleeve 14, so that the stirring rod 17 and the stirring rod shaft sleeve 14 are more stable, thereby playing a role in stabilizing and balancing the entire stirring part.

[0030] Based on the structure of the stirring part, a through hole for passing the stirring rod sleeve 14 is also provided at the bottom of the powder barrel top barrel 3 and the top of the powder barrel body 10. The diameter of the through hole is equal to or slightly larger than the diameter of the stirring rod sleeve 14 to ensure the stability of the stirring rod sleeve 14.

[0031] In order to solve the problem of uneven powder mixing when using mixed powder, the stirring member 20 is arranged in the powder barrel bottom barrel 11, and is used to stir and mix the powder in the powder barrel bottom barrel 11, and then let the powder enter the powder pan from the discharge port 21. In order to realize the stirring function of the stirring member 20, the stirring member 20 is connected to the stirring rod 17, and as the stirring rod 17 rotates, the powder in the powder barrel bottom barrel 11 is stirred.

[0032] Exemplarily, the stirring member 20 is a stirring blade, which may be a spiral stirring blade, which is arranged at the bottom of the stirring rod 17 along the outer circumference of the stirring rod 17. During use, the spiral stirring blade at the bottom of the stirring rod 17 is driven by the motor to stir and turn the powder inside the powder barrel bottom barrel 11, so that the powder is evenly mixed and kept loose to ensure good fluidity of the powder.

[0033] In order to disperse the pressure of the powder in the powder feeding bucket on the bottom of the powder feeding bucket, thereby reducing the pressure of the discharge port 21 at the bottom of the powder feeding bucket, and further reducing the risk of compaction and blockage of the bottom powder. The barrier 15 needs to be arranged above the bottom of the powder feeding bucket. Exemplarily, the barrier 15 is located on the side of the powder bucket body 10 close to the powder bucket bottom bucket 11. Since the barrier 15 needs to block the powder to prevent excessive powder from falling into the bottom of the powder bucket bottom bucket 11, the barrier 15 can be arranged close to the inner wall of the powder bucket body 10. However, the powder needs to enter the powder bucket bottom bucket 11 from the powder bucket body 10, so there needs to be a gap between the barrier 15 and the inner wall of the powder bucket body 10 so that the powder can pass through the gap and enter the powder bucket bottom bucket 11. Exemplarily, refer to Figure 5 There needs to be a gap d between the barrier 15 and the inner wall of the powder barrel body 10 .

[0034] The barrier 15 may be in the shape of an inverted funnel. When the barrier 15 is in the shape of an inverted funnel, the powder in the powder bucket body 10 is blocked on the outer wall of the barrier 15. Based on the shape of the barrier 15, the powder can easily fall into the powder bucket bottom 11 along the outer wall of the barrier 15 through the above-mentioned gap.

[0035] Furthermore, the barrier 15 can be arranged on the periphery of the stirring rod sleeve 14. The at least one material-moving member stirs the powder falling from the barrier 15 so that the powder falls into the bottom barrel 11 of the powder barrel in layers. In order to simplify the overall structure, the at least one material-moving rod 19 can be arranged on the stirring rod 17 along the circumference of the stirring rod 17 so as to rotate accordingly with the rotation of the stirring rod 17, thereby stirring the powder falling from the barrier 15. Based on this, the stirring rod 17 needs to be arranged at the lower part of the barrier 15, and since the barrier 15 is arranged on the periphery of the stirring rod sleeve 14, and the at least one material-moving rod 19 is arranged on the stirring rod 17 along the circumference of the stirring rod 17, the stirring rod sleeve 14 can extend along the end of the stirring rod 17 connected to the coupling to the position of the barrier 15.

[0036] Furthermore, the material-moving rod 19 has a material-moving blade, which is located at the opposite end connected to the stirring rod 17, so as to achieve a better material-moving effect.

[0037] As a possible implementation, the powder barrel body 10 and the powder barrel bottom barrel 11 are connected, and the barrier 15 is arranged at the bottom of the powder barrel body 10. At least one material lever 19 is arranged at the connection between the powder barrel body 10 and the powder barrel bottom barrel 11, or at the top of the powder barrel bottom barrel 11.

[0038] In a possible implementation, in order to ensure continuous supply of powder to the powder tray, the laser cladding powder feeding device further includes a material level switch 6 and a controller. The material level switch is arranged at the bottom barrel 11 of the powder barrel, and is used to detect the material level of the powder in the bottom barrel 11 of the powder barrel, and send the detection result to the controller. The controller is used to send a feeding signal to the target terminal when the material level of the powder in the detection result is less than the preset material level. The preset material level is the lowest material level of the powder in the bottom barrel 11 of the powder barrel when the laser cladding powder feeding device is working normally.

[0039] When it is detected that the powder in the bottom bucket 11 of the powder barrel is lower than the preset level, the staff holding the target terminal can add powder to the laser cladding powder feeding device according to the detection result. Furthermore, when the level switch detects that the powder in the bottom bucket 11 of the powder barrel is lower than the preset level, the level switch is also used to send a prompt signal to the outside, thereby reducing the negligence and mistakes in manual monitoring of the powder level, and solving the problem in the prior art that personnel need to constantly check the powder remaining during the use of the laser cladding powder feeding device. This method involves more human intervention and is prone to misjudgment and missed judgment. Exemplarily, the above-mentioned level switch 6 can be an audio / radio frequency level switch 6.

[0040] For example, the above-mentioned material level switch 6 is a radio frequency admittance material level switch 6. The measurement principle of the radio frequency admittance material level switch 6 is: radio frequency admittance is a new type of material level control technology developed from capacitance, which is anti-hanging, more reliable, more accurate, and more widely applicable. It is an upgrade of the capacitive material level technology. The so-called radio frequency admittance, the meaning of admittance is the reciprocal of impedance in electricity. It is composed of resistive components, capacitive components, and inductive components. Radio frequency is a high-frequency radio wave spectrum, so radio frequency admittance can be understood as measuring admittance with high-frequency radio waves. When the instrument is working, the sensor of the instrument forms an admittance value with the filling wall and the measured medium. When the material level changes, the admittance value changes accordingly. The circuit unit converts the measured admittance value into a level signal output to achieve material level measurement.

[0041] For another example, the material level switch 6 is a UZY1000 series tuning fork level switch. The UZY1000 series tuning fork level transmitter adopts a hybrid design of microcomputer and analog circuit, introducing a new intelligent concept. Compared with traditional tuning forks, it overcomes the defect of false operation caused by environmental factors, greatly improves the ability to resist environmental vibration, reliability and sensitivity. At the same time, it has an adaptive function, and can be adjusted online according to the changing on-site working conditions, which enhances the applicability of the product.

[0042] In some embodiments, in order to facilitate manual observation of the situation in the powder delivery barrel, the powder barrel body 10 is a transparent barrel body. Exemplarily, the powder barrel body 10 is a high borosilicate transparent barrel.

[0043] When the upper powder barrel body 10 is a high borosilicate transparent barrel, the lower end of the powder barrel top barrel 3 is connected and pressed with the high borosilicate transparent barrel. At this time, in order to stabilize the powder barrel top barrel 3, the powder delivery barrel also includes a plurality of powder barrel pull rods 5 arranged on the outer periphery of the powder barrel body 10. One end of the plurality of powder barrel pull rods 5 is connected to the powder barrel top barrel 3, and the other end of the plurality of powder barrel pull rods 5 is connected to the powder barrel bottom barrel 11. Exemplarily, the number of the powder barrel pull rods 5 is four, and the four powder barrel pull rods 5 are evenly arranged on the outer periphery of the powder barrel body 10.

[0044] In order to heat, dry and dehumidify the powder in the powder feeding barrel, the laser cladding powder feeding device also includes a heater 16. The heater 16 is arranged on the powder barrel bottom barrel 11, and is used to heat the powder in the powder barrel bottom barrel 11, so that the powder entering the powder tray meets the requirements. Exemplarily, in order to achieve uniform heating of the powder in the powder barrel bottom barrel 11, the heater 16 can be evenly arranged on the side wall of the powder barrel bottom barrel 11.

[0045] In practical applications, in order to monitor the pressure in the powder feeding barrel, the laser cladding powder feeding device may further include a pressure gauge 7 .

[0046] Furthermore, in order to balance the air pressure between the discharge ports 21 at the top and bottom of the laser cladding equipment, the laser cladding equipment provided in the embodiment of the present invention is provided with an air pressure balance interface 18 on the powder barrel top barrel 3. Exemplarily, the air pressure balance interface 18 is connected at a 45-degree angle on the side of the powder barrel top barrel 3, and the air pressure balance interface 18 is used to connect the high-pressure gas at the bottom of the laser cladding powder feeding device to balance the pressure at the upper and lower ends of the powder feeding device.

[0047] In the prior art, when adding materials, the powder barrel cover 2 needs to be removed, and then the powder is added, and then the powder barrel cover 2 is covered. This action is relatively cumbersome and inconvenient to operate. Based on this, the laser cladding powder feeding device provided in the embodiment of the present invention also includes a feeding

[0048] Structure. Figure 6 The feeding structure includes a feeding channel 903, a discharging channel 904, a valve assembly, and a first air inlet 805 and a second air inlet 804 arranged on the valve assembly. One end of the discharging channel 904 is connected to the above-mentioned feeding port 21, and the other end of the discharging channel 904 is connected to the feeding channel 903, and the other end of the feeding channel 903 has a powder filling port 901.

[0049] Reference Figure 6The valve assembly is arranged at the connection between the feed channel 903 and the discharge channel 904. When the first air inlet 805 is opened and the second air inlet 804 is closed, the valve assembly moves to the side away from the discharge port 21 to connect the feed channel 903 and the discharge channel 904. When the first air inlet 805 is closed and the second air inlet 804 is opened, the valve assembly returns to the connection between the feed channel 903 and the discharge channel 904 under the action of air pressure. At this time, the valve assembly is closed, and the inside and outside of the powder delivery barrel are isolated.

[0050] Reference Figure 6 In practice, when it is necessary to add powder to the powder delivery barrel, compressed gas is introduced into the first air inlet 805. Under the action of the compressed gas, the first air inlet 805 opens, so that under the action of the air pressure, the valve assembly moves to the side away from the discharge port. At this time, the feed channel 903 and the discharge channel 904 are connected, and powder can be added to the powder delivery barrel through the powder filling port. When the feeding is completed, the compressed gas is stopped from being introduced into the first air inlet 805, and the first air inlet 805 is closed. At this time, compressed gas is introduced into the second air inlet 804. Under the action of the compressed gas, the second air inlet 804 opens, so that under the action of the air pressure, the valve assembly moves to the side close to the discharge port 21, and the valve assembly returns to the connection between the feed channel 903 and the discharge channel 904. At this time, the valve assembly is closed, and the inside and outside of the powder delivery barrel are separated. It can be understood that when compressed gas is not introduced, the first air inlet 805 and the second air inlet 804 are in a closed state. Under the action of the pressure spring 802, the feed channel 903 and the discharge channel 904 are separated from the inside and outside of the powder delivery barrel.

[0051] Reference Figure 6 The valve assembly includes a pneumatic valve and a valve channel connected to a feed channel and a discharge channel, and the pneumatic valve is arranged in the valve channel. The first air inlet and the second air inlet are arranged on the valve channel. When the first air inlet is opened and the second air inlet is closed, the pneumatic valve moves along the valve channel to a side away from the discharge port 21, and the feed channel and the discharge channel are connected. When the first air inlet is closed and the second air inlet is opened, the pneumatic valve moves along the valve to a side close to the discharge port, and the pneumatic valve returns to the connection between the feed channel and the discharge channel.

[0052] As a specific example, see Figure 6, the pneumatic valve comprises a cylinder piston 801, a pressure spring 802 and a valve plug 803. The valve channel comprises a first section and a second section connected to each other. The first air inlet 805 and the second air inlet 804 are arranged on the first section, and the cylinder valve comprises a cylinder piston 801, a pressure spring 802 and a valve plug 803 arranged in the second section. Without facing the first air inlet 805 and the second air inlet 804, one end of the cylinder piston 801 is extruded and connected with the pressure spring 802, and the other end is extruded and connected with the first section of the valve channel, the other end of the pressure spring 802 is extruded and connected with the valve plug 803, and the other end of the valve plug 803 is arranged at the bottom of the valve channel, at the connection between the feed channel and the discharge channel.

[0053] When powder needs to be added to the powder delivery barrel, the first air inlet is opened and the second air inlet is closed. At this time, under the action of air pressure, the valve plug 803 moves along the valve channel to the side away from the discharge port 21, and the channel between the feed channel 903 and the discharge channel 904 is opened, and the feed channel 903 and the discharge channel 904 are connected. When the powder is added, the first air inlet is opened and the second air inlet is closed. At this time, the valve plug moves along the valve channel to the side close to the discharge port 21, and the valve plug returns to the connection between the feed channel 903 and the discharge channel 904. When no powder is added, the first air inlet and the second air inlet are both in a closed state, that is, the feed structure is in a state without an air source, and the valve plug is subjected to the force of the pressure spring, so that the powder delivery barrel and the outside are in a normally closed state.

[0054] Based on the above, compared with the prior art, the laser cladding powder feeding device provided by the present invention includes a mixing and stirring assembly. The mixing and stirring assembly includes a driving part, a stirring part and a barrier 15; the driving part extends into the powder feeding barrel along the first end of the powder feeding barrel, and the stirring part is arranged in the powder feeding barrel and is connected to the driving part. Driven by the driving part, the stirring part stirs the powder in the powder feeding barrel, so that the powder in the powder feeding barrel is continuously sent out from the discharge port 21 after being evenly mixed, so as to solve the technical problem of uneven powder mixing in the prior art when using mixed powder. Furthermore, the barrier 15 is arranged in the powder feeding barrel and is located on the first side of the stirring part, so as to block at least part of the powder in the powder feeding barrel on the first side of the stirring part; wherein, the first side of the stirring part is the side of the stirring part close to the feed port. It can be seen that through the blocking effect of the blocking member 15, at least part of the powder in the powder feeding barrel is blocked on the side of the stirring part close to the feed port, and only a small part of the powder is located at the bottom of the powder feeding barrel, and the stirring part will stir the powder at the bottom of the powder feeding barrel to loosen the powder at the bottom of the powder feeding barrel, thereby avoiding the powder at the bottom of the powder barrel being compacted due to the gravity of the powder, causing uneven powder falling of the laser cladding powder feeding device, and alternating irregular powder breakage and powder overflow.

[0055] The embodiment of the present invention also discloses a laser cladding device, and the laser cladding device includes the laser cladding powder feeding device. The beneficial effects of the laser cladding device can refer to the beneficial effects of the laser cladding powder feeding device mentioned above.

[0056] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0057] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A laser cladding powder feeding device, characterized in that: include: A powder delivery barrel and a mixing and stirring assembly; the powder delivery barrel has a feed inlet and a discharge outlet; The mixing and stirring assembly comprises a driving part, a stirring part and a blocking part; The driving part extends into the powder feeding barrel along the feeding opening of the powder feeding barrel; The stirring part is arranged in the powder feeding barrel, and is drivingly connected to the driving part, and is used for stirring the powder material located in the powder feeding barrel near the discharge port under the driving of the driving part; The blocking member is arranged in the powder feeding barrel and located on the first side of the stirring part, and is used to block at least part of the powder in the powder feeding barrel on the first side of the stirring part; wherein the first side of the stirring part is a side of the stirring part close to the feed port.

2. The laser cladding powder feeding device according to claim 1, characterized in that: The laser cladding powder feeding device also includes a feeding structure; The feed structure comprises a feed channel, a discharge channel, a valve assembly, and a first air inlet and a second air inlet arranged on the valve assembly; One end of the feed channel is provided with a powder filling port, the other end of the feed channel is connected to the discharge channel, and one end of the discharge channel is connected to the feed port; The valve assembly is arranged at the connection between the feed channel and the discharge channel; When the first air inlet is opened and the second air inlet is closed, the valve assembly moves to a side away from the feed inlet so that the feed channel and the discharge channel are connected; When the first air inlet is closed and the second air inlet is opened, the valve assembly returns to the connection between the feed channel and the discharge channel.

3. The laser cladding powder feeding device according to claim 2, characterized in that: The valve assembly comprises a pneumatic valve and a valve channel connected to the feed channel and the discharge channel, the pneumatic valve is arranged in the valve channel, and the first valve and the second valve are arranged on the valve channel; When the first air inlet is opened and the second air inlet is closed, the pneumatic valve moves along the valve channel to a side away from the discharge port, and the feed channel is connected to the discharge channel; When the first air inlet is closed and the second air inlet is opened, the pneumatic valve moves along the valve toward the side close to the discharge port, and the pneumatic valve returns to the connection between the feed channel and the discharge channel.

4. The laser cladding powder feeding device according to claim 1, characterized in that: The powder delivery barrel comprises a powder barrel cover, a powder barrel top barrel, a powder barrel body, and a powder barrel bottom barrel which are connected in sequence; The feed port is arranged on the side wall of the top bucket of the powder bucket, and the discharge port is arranged at the bottom of the bottom bucket of the powder bucket.

5. The laser cladding powder feeding device according to claim 4, characterized in that: The driving part includes a driving member and a connecting member drivingly connected to the driving member; The connecting piece extends into the top bucket of the powder bucket through the powder bucket cover and is connected to the stirring part.

6. The laser cladding powder feeding device according to claim 5, characterized in that: The stirring part includes a stirring rod, a stirring member and at least one material-moving member; One end of the stirring rod is connected to the connecting piece in the top barrel of the powder barrel, and the other end of the stirring rod passes through the powder barrel body and is connected to the stirring piece located at the bottom barrel of the powder barrel; the at least one material-dispensing piece is located at the bottom barrel of the powder barrel and is arranged on the stirring rod along the circumference of the stirring rod; And / or, the stirring member is a stirring blade.

7. The laser cladding powder feeding device according to claim 6, characterized in that: The stirring part further comprises a stirring rod shaft sleeve sleeved on the stirring rod, and a stirring rod rotary sleeve arranged in the top barrel of the powder barrel and fixedly arranged with the top barrel of the powder barrel; the stirring rod shaft sleeve is fixedly connected with the stirring rod rotary sleeve; The blocking member is located on a side of the powder barrel body close to the powder barrel bottom barrel, and the blocking member is arranged on the stirring rod rotating sleeve along the circumference of the stirring rod shaft sleeve; there is a gap between the blocking member and the inner wall of the powder barrel body; And / or, the barrier is a reverse funnel-shaped barrier.

8. The laser cladding powder feeding device according to any one of claims 3 to 7, characterized in that: The laser cladding powder feeding device also includes a material level switch and a controller communicating with the material level switch; The material level switch is arranged at the bottom barrel of the powder barrel, and is used to detect the material level of the powder in the bottom barrel of the powder barrel, and send the detection result to the controller; The controller is used for sending a feeding signal to a target terminal when the material level of the powder material in the detection result is less than a preset material level.

9. The laser cladding powder feeding device according to any one of claims 3 to 7, characterized in that: The powder barrel body is a transparent barrel; The powder delivery barrel further includes a plurality of powder barrel pull rods arranged on the periphery of the powder barrel body; One end of the plurality of powder barrel pull rods is connected to the powder barrel top barrel, and the other end of the plurality of powder barrel pull rods is connected to the powder barrel bottom barrel; And / or, the laser cladding powder feeding device further includes a heater; The heater is arranged on the bottom barrel of the powder barrel.

10. A laser cladding device, characterized in that: The laser cladding equipment includes the laser cladding powder feeding device according to any one of claims 1-9.

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