CN112553622A - Laser cladding powder feeding device and laser cladding equipment - Google Patents
Laser cladding powder feeding device and laser cladding equipment Download PDFInfo
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- CN112553622A CN112553622A CN202011535142.XA CN202011535142A CN112553622A CN 112553622 A CN112553622 A CN 112553622A CN 202011535142 A CN202011535142 A CN 202011535142A CN 112553622 A CN112553622 A CN 112553622A
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- 239000000843 powder Substances 0.000 title claims abstract description 358
- 238000004372 laser cladding Methods 0.000 title claims abstract description 60
- 238000003756 stirring Methods 0.000 claims abstract description 148
- 230000000903 blocking effect Effects 0.000 claims abstract description 30
- 238000002156 mixing Methods 0.000 claims abstract description 19
- 238000007599 discharging Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 28
- 230000004888 barrier function Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 3
- 230000001788 irregular Effects 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 239000011812 mixed powder Substances 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 230000002547 anomalous effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/92—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
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- Engineering & Computer Science (AREA)
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- Organic Chemistry (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The invention discloses a laser cladding powder feeding device and laser cladding equipment, and relates to the technical field of laser cladding. The technical problems that the laser cladding powder feeding device is easy to alternately generate irregular powder breaking and powder overflowing phenomena and the powder is easy to mix unevenly are solved. Laser cladding powder feeding device includes: a powder feeding barrel and a mixing and stirring component; the powder feeding barrel is provided with a feeding hole and a discharging hole; the mixing and stirring assembly comprises a driving part, a stirring part and a blocking piece; the driving part extends into the powder feeding barrel along a feeding hole of the powder feeding barrel; the stirring part is arranged in the powder conveying barrel, is in driving connection with the driving part and is used for stirring powder close to the discharge port in the powder conveying barrel under the driving of the driving part; the blocking piece is arranged in the powder conveying barrel, is positioned at the first side of the stirring part and is used for blocking at least part of powder in the powder conveying barrel at the first side of the stirring part; wherein, the first side of stirring portion is the one side that the stirring portion is close to the feed inlet.
Description
Technical Field
The invention relates to the technical field of laser cladding, in particular to a laser cladding powder feeding device and laser cladding equipment.
Background
The laser cladding powder feeding device is an indispensable part of a laser cladding process and comprises a powder barrel, a feeding port and a discharging port. The powder barrel is used for containing powder, when the powder barrel bears more powder, the powder at the bottom of the powder barrel is compacted due to the gravity action of the powder, so that the powder falling of the laser cladding powder feeding device is uneven, and irregular powder breaking and powder overflowing phenomena can alternately occur. In addition, when the mixed powder is used, the phenomenon of uneven mixing of the powder is easy to occur.
Disclosure of Invention
The invention aims to provide a laser cladding powder feeding device and laser cladding equipment, and aims to solve the technical problems that the laser cladding powder feeding device is easy to alternately generate irregular powder breaking and powder overflowing phenomena and is easy to generate the phenomenon of uneven powder mixing.
In order to achieve the above purpose, the invention provides the following technical scheme:
in a first aspect, a laser cladding powder feeding device comprises: a powder feeding barrel and a mixing and stirring component; the powder feeding barrel is provided with a feeding hole and a discharging hole; the mixing and stirring assembly comprises a driving part, a stirring part and a blocking piece; the driving part extends into the powder feeding barrel along a feeding hole of the powder feeding barrel; the stirring part is arranged in the powder conveying barrel, is in driving connection with the driving part and is used for stirring powder close to the discharge port in the powder conveying barrel under the driving of the driving part; the blocking piece is arranged in the powder conveying barrel, is positioned at the first side of the stirring part and is used for blocking at least part of powder in the powder conveying barrel at the first side of the stirring part; wherein, the first side of stirring portion is the one side that the stirring portion is close to the feed inlet.
Compared with the prior art, the laser cladding powder feeding device provided by the invention comprises a mixing and stirring component. The mixing and stirring assembly comprises a driving part, a stirring part and a blocking piece; 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 in driving connection with the driving part. Under the drive of the driving part, the stirring part is used for stirring the powder in the powder feeding barrel, so that the powder in the powder feeding barrel is continuously discharged from the discharge port after being uniformly mixed, and the technical problem of the phenomenon that the powder is not uniformly mixed easily when the mixed powder is used in the prior art is solved. Furthermore, the blocking piece is arranged in the powder conveying barrel and positioned at the first side of the stirring part and is used for blocking at least part of powder in the powder conveying barrel at the first side of the stirring part; wherein, the first side of stirring portion is the one side that the stirring portion is close to the feed inlet. It can be seen that through the separation effect of separation piece, send at least partial powder in the powder bucket by the separation in the stirring portion near one side of feed inlet, only a small part of powder is located the barrel head of sending the powder bucket, and stirring portion can stir the powder that send the powder bucket barrel head to the powder that becomes flexible send the powder bucket barrel head, thereby avoid causing powder barrel head powder to be compacted because powder gravity action, cause the powder of laser cladding to send the powder device to fall whitewashed inhomogeneous, can appear anomalous disconnected powder in turn and overflow whitewashed problem of phenomenon.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of a laser cladding powder feeding device provided in an embodiment of the present invention;
fig. 2 is a cross-sectional view of a laser cladding powder feeding device provided in an embodiment of the present invention;
fig. 3 is an exploded view of a laser cladding powder feeding device according to an embodiment of the present invention;
FIG. 4 is a detailed structural view of a setting lever according to an embodiment of the present invention;
FIG. 5 is a partial detailed structural view of a stirring member and a powder barrel body according to an embodiment of the present invention;
fig. 6 is a schematic view of a feeding structure provided in an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be 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 be indirectly connected to the other element.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The laser cladding powder feeding device is an indispensable part of a laser cladding process and comprises a powder barrel, a feeding port and a discharging port. The powder barrel is used for containing powder, when the powder barrel bears more powder, the powder at the bottom of the powder barrel is compacted due to the gravity action of the powder, so that the powder falling of the laser cladding powder feeding device is uneven, and irregular powder breaking and powder overflowing phenomena can alternately occur. When the powder in the laser cladding powder feeding device is mixed powder, the phenomenon of uneven powder mixing is easy to occur. In addition, in the using process of the laser cladding powder feeding device, personnel are required to continuously check the powder allowance, so that more manual intervention is needed, and misjudgment and missed judgment are easily caused.
Accordingly, referring to fig. 1 to 5, an embodiment of the present invention discloses a laser cladding powder feeding device to solve the above technical problems. The laser cladding powder feeding device may include: send whitewashed bucket, be located the feed inlet of sending whitewashed bucket first end, be located send whitewashed bucket second end's discharge gate 21 and be located send the compounding stirring subassembly of whitewashed bucket. The feeding hole is used for supplementing powder materials into the powder feeding barrel, the discharging hole 21 is used for feeding the powder plate, and the mixing and stirring assembly is used for mixing and stirring the powder materials in the powder feeding barrel.
In a possible implementation manner, the powder feeding barrel comprises 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.
Wherein, the powder barrel cover 2 is used for sealing the powder barrel body 10 and bearing a driving part in the mixing stirring assembly. The powder barrel cover 2 and the powder barrel top barrel 3 can be connected by a buckle or a thread, and the embodiment of the invention is not particularly limited.
The side wall of the powder barrel top barrel 3 is provided with a feeding hole, and the powder barrel top barrel 3 is fixedly connected with the powder barrel body 10. The powder barrel body 10 is used for storing powder, and the powder barrel body 10 can be a transparent barrel body so as to be convenient for observing the powder in the powder barrel. Illustratively, a connecting part 4 is arranged between the powder barrel top barrel 3 and the powder barrel body 10, and the connecting part 4 is used for realizing the fixed connection between the powder barrel top barrel 3 and the powder barrel body 10.
A gap for powder to fall is formed between the powder barrel body 10 and the powder barrel bottom barrel 11, so that the powder in the powder barrel body 10 uniformly falls into the powder barrel bottom barrel 11.
The powder barrel bottom barrel 11 is provided with a discharge port 21, and the discharge port 21 is connected with a powder plate. The mixing and stirring component mixes and stirs the powder in the powder barrel bottom barrel 11, so that the powder in the powder feeding barrel is continuously fed out from the discharge port 21 to the powder tray after being uniformly mixed.
In some embodiments, the above-described compounding stirring assembly includes a driving part, a stirring part, and a blocking member 15. The drive part stretches into in powder bung barrel 3 along powder bung 2, is connected with stirring portion drive in powder bung barrel 3, and separation piece 15 sets up in powder bucket body 10 for block the powder, prevent that too much powder from getting into in powder barrel head bucket 11.
Wherein, above-mentioned drive division can include drive connection's driving piece 1 and connecting piece 12, and connecting piece 12 stretches into powder bucket top bucket 3 through powder bung 2 in, is connected with stirring portion, and driving piece 1 can set up on powder bung 2.
Illustratively, the driving member 1 may be a motor, and the connecting member 12 may be a coupler. Wherein, the motor is installed on powder bung 2, and shaft coupling one end is connected with the output shaft of motor, and the other end is connected with stirring portion for under the drive of motor, drive stirring portion stirs the powder.
Wherein the stirring part comprises a stirring rod 17, at least one stirring piece and a stirring piece 20. One end of the stirring rod 17 is connected with the connecting piece 12 in the top barrel 3 of the powder barrel, and the other end of the stirring rod 17 penetrates through the powder barrel body 10 and is connected with the stirring piece 20 positioned in the bottom barrel 11 of the powder barrel. At least one stirring piece can be positioned in the powder barrel bottom barrel 11 and arranged on the stirring rod 17 along the circumferential direction of the stirring rod 17.
In order to ensure the stability of the stirring rod 17, the stirring part can further comprise a stirring rod shaft sleeve 14 sleeved on the stirring rod 17 and a stirring rod 17 rotary sleeve 13 arranged in the powder barrel top barrel 3. The stirring rod 17 and the rotary sleeve 13 can be clamped at the bottom of the powder barrel top barrel 3 and used for fixing the stirring rod shaft sleeve 14, so that the stirring rod 17 and the stirring rod shaft sleeve 14 are more stable, and the whole stirring part is stably balanced.
Based on the structure of the stirring part, the bottom of the powder barrel top barrel 3 and the top of the powder barrel body 10 are also provided with through holes for passing through the stirring rod shaft sleeve 14. The diameter of the through hole is equal to or slightly larger than the diameter of the stirring rod shaft sleeve 14, so as to ensure the stability of the stirring rod shaft sleeve 14.
In order to solve the problem that the powder is easily mixed unevenly when the powder is mixed, the stirring part 20 is arranged in the powder barrel bottom barrel 11 and is used for stirring and mixing the powder in the powder barrel bottom barrel 11 and then enabling the powder to enter the powder tray 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 rotates with the stirring rod 17 to stir the powder in the powder barrel 11.
Illustratively, the stirring member 20 is a stirring blade, and the stirring blade may be a helical stirring blade disposed at the bottom of the stirring rod 17 along the outer circumference of the stirring rod 17. In the using process, 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 11 at the bottom of the powder barrel, so that the powder is uniformly mixed and kept loose, and the good flowability of the powder is ensured.
In order to disperse the pressure of the powder in the powder feeding barrel on the bottom of the powder feeding barrel, the pressure of a discharge port 21 at the bottom of the powder feeding barrel is reduced, and the risk of compaction and blockage of the powder at the bottom is reduced. The blocking member 15 needs to be disposed above the bottom of the powder feeding barrel. Illustratively, the blocking member 15 is located on a side of the powder barrel body 10 close to the powder barrel bottom 11. Since the blocking member 15 needs to block the powder to prevent the excessive powder from falling into the bottom of the powder barrel bottom 11, the blocking member 15 may be disposed close to the inner wall of the powder barrel body 10. However, the powder needs to enter the powder barrel bottom 11 from the powder barrel body 10, so the barrier member 15 needs to have a space with the inner wall of the powder barrel body 10 so that the powder enters the powder barrel bottom 11 through the space. Illustratively, referring to fig. 5, the barrier 15 needs to have a space d from the inner wall of the powder container body 10.
The barrier 15 may be shaped as an inverted funnel. When the blocking member 15 is in a reverse funnel shape, the powder in the powder barrel body 10 is blocked on the outer wall of the blocking member 15. And the powder easily falls into the powder bottom bucket 11 along the outer wall of the barrier 15 through the above-mentioned interval, based on the shape of the barrier 15.
Further, the above-mentioned blocking member 15 may be provided on the outer periphery of the agitator shaft sleeve 14. The at least one stirring member stirs the powder falling from the barrier member 15 so that the powder continuously falls into the powder barrel bottom barrel 11. In order to simplify the overall structure, the at least one stirring rod 19 may be disposed on the stirring rod 17 along the circumferential direction of the stirring rod 17 to rotate correspondingly with the rotation of the stirring rod 17, thereby achieving the stirring of the powder falling from the blocking member 15. Based on this, the stirring rod 17 needs to be arranged at the lower part of the blocking member 15, and since the blocking member 15 is arranged at the periphery of the stirring rod shaft sleeve 14, and the at least one stirring rod 19 is arranged on the stirring rod 17 along the circumferential direction of the stirring rod 17, the stirring rod shaft sleeve 14 can extend to the position of the blocking member 15 along the end of the stirring rod 17 connected with the shaft coupling.
Further, the above-mentioned material-stirring rod 19 has a material-stirring blade which is located at the opposite end connected with the stirring rod 17 for achieving a better material-stirring effect.
As a possible implementation manner, the powder barrel body 10 and the powder barrel bottom barrel 11 are communicated, and the blocking member 15 is disposed at the bottom of the powder barrel body 10. At least one material stirring rod 19 is arranged at the communication part of the powder barrel body 10 and the powder barrel bottom barrel 11 or at the top of the powder barrel bottom barrel 11.
In a possible implementation manner, in order to ensure that the powder tray is continuously supplied with the powder, the laser cladding powder feeding device further comprises a material level switch 6 and a controller. The material level detection switch is arranged at the bottom barrel 11 of the powder barrel and used for detecting the material level of powder in the bottom barrel 11 of the powder barrel and sending a detection result to the controller. The controller is used for sending a feeding signal to the target terminal when the material level of the powder in the detection result is smaller than a preset material level. Wherein, the preset material level is the lowest material level of the powder in the bottom barrel 11 of the powder barrel under the condition that the laser cladding powder feeding device normally works.
When detecting that the powder in the powder barrel bottom barrel 11 is lower than the preset material level, a worker holding the target terminal can add the powder to the laser cladding powder feeding device according to the detection result. Further, when the material level switch detects that the powder in the powder barrel bottom barrel 11 is lower than the preset material level, the material level switch is also used for sending out a prompt signal, so that negligence and errors of manual monitoring of the powder material level are reduced, the problem in the prior art that personnel are required to continuously check the powder allowance in the use process of the laser cladding powder feeding device is solved, the manual intervention is more in the mode, and the misjudgment are easily caused. The above-mentioned level switch 6 may be, for example, an audio/radio frequency level switch 6.
For example, the level switch 6 is a radio frequency admittance level switch 6, and the measurement principle of the radio frequency admittance level switch 6 is as follows: the radio frequency admittance is a novel material level control technology which is developed from a capacitance type, is prevented from hanging materials, is more reliable and accurate, and has wider applicability, and is the upgrade of the capacitance type material level technology. By admittance, the meaning of admittance is the inverse of the impedance in the electrical system, which is a combination of resistive, capacitive and inductive components, whereas radio frequency, i.e. the high frequency radio spectrum, is understood to mean that the admittance is measured by high frequency radio waves. When the instrument works, the sensor of the instrument, the filling wall and the measured medium form an admittance value, when the material level changes, the admittance value changes correspondingly, and the circuit unit converts the measured admittance value into a material level signal to be output, so that the material level measurement is realized.
For another example, the level switch 6 is a UZY1000 series tuning fork level switch. The UZY1000 series tuning fork level signal transmitter adopts the mixed design of microcomputer and analog circuit, and introduces a brand new intelligent concept. Compared with the traditional tuning fork, the tuning fork overcomes the defect of false operation caused by environmental factors, and greatly improves the capability of resisting environmental vibration, reliability and sensitivity. Meanwhile, the device has a self-adaptive function, can be adjusted on line aiming at the changed field working conditions, and enhances the applicability of the product.
In some embodiments, the powder barrel body 10 is a transparent barrel body for facilitating manual observation of the inside of the powder feeding barrel. Illustratively, the powder barrel body 10 is a borosilicate transparent bucket.
When the upper powder barrel body 10 is a high borosilicate transparent charging barrel, the lower end of the top barrel 3 of the powder barrel is connected with the press fit high borosilicate transparent charging barrel. At this time, in order to stabilize the powder barrel top barrel 3, the powder feeding barrel further includes a plurality of powder barrel pulling rods 5 disposed at the periphery of the powder barrel body 10. One end of each powder barrel pull rod 5 is connected with the powder barrel top barrel 3, and the other end of each powder barrel pull rod 5 is connected with the powder barrel bottom barrel 11. Illustratively, the number of the powder barrel pulling rods 5 is four, and the four powder barrel pulling rods 5 are uniformly arranged on the periphery of the powder barrel body 10.
In order to heat, dry and dehumidify the powder in the powder feeding barrel, the laser cladding powder feeding device further comprises a heater 16. The heater 16 is arranged on the powder barrel bottom barrel 11 and used for heating the powder in the powder barrel bottom barrel 11 so as to enable the powder entering the powder tray to meet the requirement. For example, in order to achieve uniform heating of the powder in the powder barrel bottom 11, the heater 16 may be uniformly disposed on the side wall of the powder barrel bottom 11.
In practical application, in order to monitor the pressure in the powder feeding barrel, the laser cladding powder feeding device can further comprise a pressure gauge 7.
Further, in order to balance the air pressure between the discharge ports 21 at the top and the bottom of the laser cladding equipment, the laser cladding equipment provided by the embodiment of the invention is provided with an air pressure balance interface 18 on the powder barrel top barrel 3. Illustratively, a pressure balance interface 18 is connected at a 45-degree angle of the side edge of the top barrel 3 of the powder barrel, and the pressure balance interface 18 is used for connecting high-pressure gas at the bottom of the laser cladding powder feeding device to balance the pressure of the upper end and the lower end of the powder feeding device.
In the prior art, the powder barrel cover 2 needs to be detached during material supplementing, then powder is added, and then the powder barrel cover 2 is covered, so that the action is complex, and the operation is inconvenient. Based on this, the laser cladding powder feeding device provided by the embodiment of the invention further comprises a feeding device
And (5) structure. Referring to fig. 6, the feed structure comprises a feed channel 903, an outlet channel 904, a valve assembly and a first inlet 805 and a second inlet 804 arranged on said valve assembly. One end of the discharge channel 904 is communicated with the feed inlet 21, the other end of the discharge channel 904 is connected with the feed channel 903, and the other end of the feed channel 903 is provided with a powder filling port 901.
Referring to fig. 6, a valve assembly is provided at the junction of the feed channel 903 and the discharge channel 904, and when the first inlet 805 is opened and the second inlet 804 is closed, the valve assembly is moved to a side away from the discharge hole 21 to communicate 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 is restored to the connection position of the feeding channel 903 and the discharging channel 904 under the action of air pressure, at the moment, the valve assembly is closed, and the inside and the outside of the powder feeding barrel are isolated.
Referring to fig. 6, in practice, when powder needs to be added into the powder feeding barrel, compressed gas is introduced into the first gas inlet 805, and under the action of the compressed gas, the first gas inlet 805 is opened, so that under the action of the gas pressure, the valve assembly moves to the side far away from the discharge hole, at this time, the feeding channel 903 and the discharge channel 904 are communicated, and powder can be added into the powder feeding barrel through the powder filling port. When the addition is completed, the supply of the compressed gas to the first gas inlet 805 is stopped, and the first gas inlet 805 is closed. At this moment, compressed gas is introduced into the second gas inlet 804, and under the action of the compressed gas, the second gas inlet 804 is opened, so that under the action of the gas pressure, the valve assembly moves to one side close to the discharge port 21, the valve assembly is restored to the joint of the feeding channel 903 and the discharge channel 904, the valve assembly is closed at this moment, and the powder feeding barrel is isolated from the inside and the outside. It is understood that the first inlet 805 and the second inlet 804 are in the closed state without the introduction of the compressed gas. The feeding channel 903 and the discharging channel 904 are isolated from the inside and the outside of the powder feeding barrel under the action of the pressure spring 802.
Referring to fig. 6, the valve assembly includes a pneumatic valve and a valve passage communicating with the feed passage and the discharge passage, the pneumatic valve being disposed in the valve passage. The first and second inlet ports are disposed on the valve passage. When the first air inlet is opened and the second air inlet is closed, the pneumatic valve moves to one side far away from the discharge port 21 along the valve channel, and the feeding channel is communicated with the discharge channel. When the first air inlet is closed and the second air inlet is opened, the pneumatic valve moves to one side close to the discharge port along the valve, and the pneumatic valve is restored to the connecting position of the feeding channel and the discharge channel.
As a specific example, referring to fig. 6, the pneumatic valve described above includes a cylinder piston 801, a pressure spring 802, and a valve plug 803. Wherein the valve passage comprises a first section and a second section connected. A first intake port 805, a second intake port 804 are provided on the first section, and a cylinder valve including a cylinder piston 801, a compression spring 802, and a valve plug 803 are provided in the second section. Under the condition that the first air inlet 805 and the second air inlet 804 are not communicated, one end of the air cylinder piston 801 is connected with the pressure spring 802 in a pressing mode, the other end of the air cylinder piston is connected with the first section of the valve channel in a pressing mode, the other end of the pressure spring 802 is connected with the valve plug 803 in a pressing mode, and the other end of the valve plug 803 is arranged at the bottom of the valve channel, and the connection position of the feeding channel and the discharging channel.
When powder needs to be added into the powder feeding barrel, the first air inlet is opened, the second air inlet is closed, at the moment, under the action of air pressure, the valve plug 803 moves towards one side far away from the discharge hole 21 along the valve channel, the channel between the feeding channel 903 and the discharge channel 904 is opened, and the feeding channel 903 is communicated with the discharge channel 904. When powder loading is completed, the first air inlet is opened, the second air inlet is closed, at the moment, the valve plug moves to one side close to the discharge port 21 along the valve channel, and the valve plug is restored to the joint of the feeding channel 903 and the discharging channel 904. When no powder is added, the first air inlet and the second air inlet are both in a closed state, namely the feeding structure is in a condition without an air source, and the valve plug is under the action force of the pressure spring, so that the powder feeding barrel and the outside are in a normally closed state.
Based on the above, compared with the prior art, the laser cladding powder feeding device provided by the invention comprises a material mixing and stirring component. The mixing and stirring assembly comprises a driving part, a stirring part and a barrier piece 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 in driving connection with the driving part. Under the drive of the driving part, the stirring part is used for stirring the powder in the powder feeding barrel, so that the powder in the powder feeding barrel is continuously discharged from the discharge port 21 after being uniformly mixed, and the technical problem that the phenomenon of nonuniform powder mixing is easily caused when the mixed powder is used in the prior art is solved. Furthermore, the blocking member 15 is arranged in the powder feeding barrel and positioned at the first side of the stirring part, and is used for blocking at least part of powder in the powder feeding barrel at the first side of the stirring part; wherein, the first side of stirring portion is the one side that the stirring portion is close to the feed inlet. It can be seen that, through the separation effect of the separation piece 15, at least part of powder in the powder feeding barrel is separated at one side of the stirring part close to the feeding port, only a small part of powder is located at the barrel bottom of the powder feeding barrel, and the stirring part can stir the powder at the barrel bottom of the powder feeding barrel to loosen the powder at the barrel bottom of the powder feeding barrel, so that the problems that the powder at the bottom of the powder feeding barrel is compacted due to the gravity action of the powder, the powder falling of the laser cladding powder feeding device is not uniform, and irregular powder breaking and powder overflowing phenomena can alternately occur are avoided.
The embodiment of the invention also discloses laser cladding equipment, and the laser cladding powder feeding device of the laser cladding equipment. The beneficial effects of the laser cladding equipment can refer to the beneficial effects of the laser cladding powder feeding device.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A laser cladding powder feeding device is characterized by comprising: a powder feeding barrel and a mixing and stirring component; the powder feeding barrel is provided with a feeding hole and a discharging hole;
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 hole of the powder feeding barrel;
the stirring part is arranged in the powder feeding barrel, is in driving connection with the driving part and is used for stirring powder close to the discharge port in the powder feeding barrel under the driving of the driving part;
the blocking piece is arranged in the powder conveying barrel, is positioned at the first side of the stirring part and is used for blocking at least part of powder in the powder conveying barrel at the first side of the stirring part; wherein, the first side of stirring portion is the stirring portion is close to one side of feed inlet.
2. The laser cladding powder feeding apparatus of claim 1, further comprising a feeding structure;
the feeding structure comprises a feeding channel, a discharging channel, a valve assembly, a first air inlet and a second air inlet, wherein the first air inlet and the second air inlet are arranged on the valve assembly;
one end of the feeding channel is provided with a powder filling port, the other end of the feeding channel is connected with the discharging channel, and one end of the discharging channel is communicated with the feeding port;
the valve assembly is arranged at the joint of the feeding channel and the discharging channel;
when the first air inlet is opened and the second air inlet is closed, the valve assembly moves to one side far away from the feed inlet so as to enable the feed channel to be communicated with the discharge channel;
when the first air inlet is closed and the second air inlet is opened, the valve assembly is restored to the joint of the feeding channel and the discharging channel.
3. The laser cladding powder feeding apparatus of claim 2, wherein the valve assembly comprises a pneumatic valve and a valve channel in communication with the feed channel and the discharge channel, the pneumatic valve disposed within the valve channel, the first valve and the second valve disposed on the valve channel;
when the first air inlet is opened and the second air inlet is closed, the pneumatic valve moves to one side far away from the discharge hole along the valve channel, and the feeding channel is communicated with the discharge channel;
when the first air inlet is closed and the second air inlet is opened, the pneumatic valve moves to one side close to the discharge port along the valve, and the pneumatic valve is restored to the connection position of the feeding channel and the discharge channel.
4. The laser cladding powder feeding device of claim 1, wherein the powder feeding 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 powder barrel is characterized in that the feeding hole is formed in the side wall of the top barrel of the powder barrel, and the discharging hole is formed in the bottom of the bottom barrel of the powder barrel.
5. The laser cladding powder feeding device of claim 4, wherein the driving part comprises a driving member and a connecting member in driving connection with the driving member;
the connecting piece extends into the powder barrel top barrel through the powder barrel cover and is connected with the stirring part.
6. The laser cladding powder feeding device of claim 5, wherein the stirring part comprises a stirring rod, a stirring piece and at least one stirring piece;
one end of the stirring rod is connected with the connecting piece in the powder barrel top barrel, and the other end of the stirring rod penetrates through the powder barrel body and is connected with the stirring piece positioned at the powder barrel bottom barrel; the at least one stirring piece is positioned at the bottom barrel of the powder barrel and is arranged on the stirring rod along the circumferential direction of the stirring rod;
and/or the stirring piece is a stirring blade.
7. The laser cladding powder feeding device of claim 6, wherein the stirring part further comprises a stirring rod shaft sleeve sleeved on the stirring rod, and a stirring rod rotating sleeve arranged in the powder barrel top barrel and fixedly arranged with the powder barrel top barrel; the stirring rod shaft sleeve is fixedly connected with the stirring rod rotating sleeve;
the blocking piece is positioned on one side of the powder barrel body close to the powder barrel bottom barrel, and the blocking piece is arranged on the stirring rod rotating sleeve along the circumferential direction of the stirring rod shaft sleeve; a space is arranged between the blocking piece and the inner wall of the powder barrel body;
and/or the barrier is a reverse funnel barrier.
8. The laser cladding powder feeding device of any one of claims 3-7, further comprising a level switch and a controller in communication with the level switch;
the material level detection switch is arranged at the bottom barrel of the powder barrel and is used for detecting the material level of powder in the bottom barrel of the powder barrel and sending the detection result to the controller;
and the controller is used for sending a feeding signal to the target terminal when the material level of the powder 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, wherein the powder barrel body is a transparent barrel body;
the powder feeding barrel also comprises a plurality of powder barrel pull rods arranged on the periphery of the powder barrel body;
one end of each powder barrel pull rod is connected with the powder barrel top barrel, and the other end of each powder barrel pull rod is connected with the powder barrel bottom barrel;
and/or the laser cladding powder feeding device further comprises a heater;
the heater is arranged on the powder barrel bottom barrel.
10. A laser cladding apparatus, characterized in that it comprises a laser cladding powder feeding device according to any one of claims 1 to 9.
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| CN202011535142.XA CN112553622A (en) | 2020-12-22 | 2020-12-22 | Laser cladding powder feeding device and laser cladding equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011535142.XA CN112553622A (en) | 2020-12-22 | 2020-12-22 | Laser cladding powder feeding device and laser cladding equipment |
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| CN202011535142.XA Pending CN112553622A (en) | 2020-12-22 | 2020-12-22 | Laser cladding powder feeding device and laser cladding equipment |
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| CN214694372U (en) * | 2020-12-22 | 2021-11-12 | 南京辉锐光电科技有限公司 | Laser cladding powder feeding device and laser cladding equipment |
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| WO2016008793A1 (en) * | 2014-07-17 | 2016-01-21 | Siemens Aktiengesellschaft | Powder switch for mixing |
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Effective date of registration: 20231206 Address after: 211121 workshop 2, intelligent manufacturing innovation industrial park, No.1 Ruixin Road, Hushu street, Jiangning District, Nanjing City, Jiangsu Province Applicant after: NANJING HUIRUI PHOTOELECTRIC TECHNOLOGY CO.,LTD. Applicant after: CHINA YANGTZE POWER Co.,Ltd. Address before: 211121 workshop 2, intelligent manufacturing innovation industrial park, No.1 Ruixin Road, Hushu street, Jiangning District, Nanjing City, Jiangsu Province Applicant before: NANJING HUIRUI PHOTOELECTRIC TECHNOLOGY CO.,LTD. |
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