CN217484100U - Powder fluidity measuring device - Google Patents
Powder fluidity measuring device Download PDFInfo
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- CN217484100U CN217484100U CN202122598965.3U CN202122598965U CN217484100U CN 217484100 U CN217484100 U CN 217484100U CN 202122598965 U CN202122598965 U CN 202122598965U CN 217484100 U CN217484100 U CN 217484100U
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- 239000000843 powder Substances 0.000 title claims abstract description 74
- 239000011521 glass Substances 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 16
- 239000000654 additive Substances 0.000 description 7
- 230000000996 additive effect Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 230000007480 spreading Effects 0.000 description 3
- 238000003892 spreading Methods 0.000 description 3
- 238000012512 characterization method Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
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Abstract
The utility model discloses a powder mobility measuring device relates to the vibration material disk field. The powder filling machine comprises a support and a motor arranged on the support, wherein an output shaft of the motor is sequentially connected with a torque sensor and a driving wheel, a driven wheel is arranged on one side of the driving wheel, a rotary drum used for containing powder is arranged on the driving wheel and the driven wheel, and a camera is arranged on the support on the other side of the rotary drum. The utility model discloses a powder that moment of torsion and the camera that torque sensor gathered were shot flows the mobility of appearance comprehensive measurement powder, can use a small amount of powder to measure the mobility of powder rapidly, accurately before large-scale vibration material disk produces.
Description
Technical Field
The utility model relates to a vibration material disk field, especially a powder mobility measuring device.
Background
In recent years, the additive manufacturing technology is rapidly developed, and the additive manufactured product has the characteristics of high forming speed, shape flexibility, high material utilization rate and the like. Fine powder is a raw material widely used in additive manufacturing, and its particle size, sphericity, adhesiveness, and the like greatly affect the flowability of powder, and further affect the effect of additive manufacturing. The commonly used powder fluidity measuring and characterizing methods mainly comprise a Hall flow velocity method, a static dynamic repose angle method and the like. The methods cannot keep consistent with the flowing boundary conditions and states of the powder in the powder paving process, and meanwhile, the shearing rate is not controllable, so that the method is difficult to accurately and truly reflect the powder flowing and powder paving capability in the additive manufacturing process. In addition, the methods have large powder consumption, poor repeatability and large influence on operators.
Chinese patent with the authorization number of CN 108303346A in 7 and 20 months in 2017 discloses a quantitative characterization method for powder flowability. A powder sample is first taken and pre-compressed to form a flat-surfaced bed of powder particles. The surface hardness of the powder particle bed was then measured by ball indentation and the flowability of the powder sample was characterized by the surface hardness. The method creatively takes the ball indentation method as a quantitative characterization method of powder fluidity, has the same detection result as the traditional dynamic angle of repose detection method, can well detect the fluidity of certain agglomeration of the powder, and has a wide application range. However, the precision of the device, especially the probe of the instrument, is extremely high in cost and easy to damage, and is not suitable for long-term multiple measurements.
Chinese patent No. CN 106984816 a, 28 th 7 th 2017, discloses an apparatus for additive manufacturing powder flowability detection. The device uses a housing equipped with a powder spreading device to perform powder spreading simulation, and then uses a surface topography measuring device in the housing to measure performance parameters of a powder layer. The method can accurately and comprehensively measure the flatness of the powder layer. However, due to the existence of the powder spreading device and the surface appearance measuring device, the device is large in size, complex in structure, high in cost, high in requirement on operators and long in detection time.
Chinese patent No. CN 109856010A of 7/6/2019 discloses a device and a method for detecting metal powder flowability. The method can accurately measure the falling time interval of the powder through a laser range finder and represents the powder flowability according to the falling time interval. And the dynamic angle of repose of the powder can be calculated through parameters of the pyramid, and the results are accurate. However, the experimental equipment is complex in arrangement, very tedious in operation, difficult in operation, high in error rate, and incapable of simply and rapidly measuring the fluidity of the powder, and a certain skill base is required.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims to solve the technical problem that to prior art not enough, provide a powder mobility measuring device.
In order to solve the technical problem, the utility model discloses a powder mobility measuring device, including support and the motor of setting on the support, motor output shaft connects gradually torque sensor and action wheel, and action wheel level one side is equipped with from the driving wheel, and action wheel and from being equipped with the rotary drum that is used for holding the powder on the driving wheel are equipped with the camera on the support of rotary drum opposite side.
The utility model discloses in, the rotary drum outside cover has rubber housing.
In the utility model, more than one air hole is arranged on the rotary drum.
The utility model discloses in, be equipped with the light source on the support on camera upper portion.
The utility model discloses in, the rotary drum is two lamella formula structures.
The utility model discloses in, the rotary drum is close to camera one side and is made by transparent organic glass, and opposite side inner wall black oxidation treatment, organic glass inner wall scribble the ITO coating, and rotary drum lateral wall inboard is equipped with the round recess.
The utility model discloses in, through the powder that moment of torsion and the camera of torque sensor collection shot flow the mobility of appearance comprehensive measurement powder.
Has the advantages that:
different with conventional mobility measuring device, the utility model discloses a powder that the powder that torque sensor gathered and camera were shot flows the mobility of appearance comprehensive measurement powder, only needs to carry out once and measures the experiment, alright obtain two mobility parameters, has improved mobility measuring efficiency and accuracy. Furthermore, the utility model discloses a large amount of details when having considered actual operation, if adopt black oxidation inner wall to avoid reflecting light to influence the camera and observe, adopt the ITO coating to avoid powder electrostatic absorption, adopt the recess to prevent when rotatory powder slide etc. have improved the feasibility of operation.
Drawings
These and/or other advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings and the following detailed description.
FIG. 1 is a schematic diagram of a system architecture;
FIG. 2 is a schematic view of a drum configuration;
FIG. 3 is a schematic view of a drum circumferential groove.
Number designation in the figures: 1. the device comprises a support, 2, a motor, 3, a torque sensor, 4, air holes, 5, a rotary drum, 6, powder, 7, a driving wheel, 8, a light source, 9, a camera, 10, a driven wheel, 11, a groove, 12 and a rubber shell.
Detailed Description
Example (b):
referring to fig. 1 and 2, the powder dust collecting device comprises a support 1 and a motor 2 arranged on the support 1, wherein an output shaft of the motor 2 is sequentially connected with a torque sensor 3 and a driving wheel 7, a driven wheel 10 is arranged on one horizontal side of the driving wheel 7, a rotary drum 5 for containing powder is arranged on the driving wheel and the driven wheel, and a camera 9 is arranged on the support 1 on the other side of the rotary drum. The outside of the drum is covered with a rubber casing 12 or a material with a large friction coefficient. More than one air hole 4 is arranged on the rotary drum. The bracket 1 on the upper part of the camera 9 is provided with a light source 8. The rotary drum 5 is of a two-petal structure. One side of the drum, which is close to the camera, is made of transparent organic glass, the inner wall of the other side is subjected to black oxidation treatment, the inner wall of the organic glass is coated with an ITO coating, and the inner side of the side wall of the drum is provided with a circle of grooves 11. The fluidity of the powder is comprehensively measured by the torque acquired by the torque sensor 3 and the powder flow morphology shot by the camera 9.
In the embodiment, the torque sensor is an HLT-151 torque sensor, and the camera is a CCD camera of Fuji Finipix AX560/205 model.
The method specifically comprises the following steps: the driving device of the present embodiment is composed of a motor 2, a driving wheel 7 and a driven wheel 10. The rotary drum 5 is arranged above the driving wheel 7 and the driven wheel, and a rubber shell 12 on the outer side of the rotary drum 5 is used for increasing friction and driving the rotary drum to rotate. Gas can be added into the rotary drum through the tiny air holes 4 on the rotary drum to control the gas atmosphere in the rotary drum to be close to the working condition of actual additive manufacturing. In the rotating process of the rotary drum, the torque sensor 3 collects real-time torque parameters, and the CCD camera 9 is positioned right in front of the rotary drum and matched with the light source 8 to shoot the flowing state of the powder. The fluidity of the powder is comprehensively measured by the torque acquired by the torque sensor 3 and the powder flow morphology shot by the camera 9.
One side of the rotary drum, which is close to the camera, is made of transparent organic glass, the inner wall of the other side is subjected to black oxidation treatment, the inner wall of the organic glass is coated with an ITO coating, and the inner side of the side wall of the rotary drum is provided with a circle of grooves 11, as shown in figure 3. The black oxidation of rotary drum inner wall makes the powder motion state be convenient for observe, and the ITO coating of PMMA board prevents that the powder that leads to because of static from adsorbing on the PMMA board, and the influence is observed, and powder when the recess 11 of circumference is used for preventing to rotate slides.
The following further illustrates the flow property test of stainless steel 316L powder as an example:
stainless steel 316L powder 15-53 microns to be tested was added to the drum. Gas is introduced into the rotary drum 5 through the tiny air holes 4 on the rotary drum so as to control the gas atmosphere in the rotary drum. And (3) placing the rotary drum 5 filled with the powder on a driving wheel 7 and a driven wheel 10, and starting the motor 2 to drive the rotary drum 5 to rotate. The rotation speed of the drum 5 is set to a large value and rotated for a period of time so that the powder in the drum 5 is distributed substantially randomly. And (3) turning on a light source 8, setting the rotating speed of the rotary drum 5 as a measured value, starting the torque sensor 3 and the CCD camera 9 to collect the real-time flowing state and torque, and comprehensively measuring the flowability of the powder through the torque collected by the torque sensor 3 and the powder flowing appearance shot by the CCD camera 9.
The utility model provides a thinking and method of powder mobility measuring device specifically realize this technical scheme's method and way a lot, above only the utility model discloses a preferred embodiment should point out, to the ordinary technical personnel in this technical field, is not deviating from the utility model discloses under the prerequisite of principle, can also make a plurality of improvements and moist decorations, these improvements should also be regarded as with moist decorations the utility model discloses a protection scope. All the components not specified in the present embodiment can be realized by the prior art.
Claims (7)
1. The utility model provides a powder mobility measuring device, its characterized in that includes support (1) and motor (2) of setting on support (1), and torque sensor (3) and action wheel (7) are connected gradually to motor (2) output shaft, and action wheel (7) level one side is equipped with from driving wheel (10), and action wheel and follow driving wheel are equipped with rotary drum (5) that are used for holding the powder, are equipped with camera (9) on support (1) of rotary drum (5) opposite side.
2. A powder flowability measuring device as claimed in claim 1, wherein the drum is covered with a rubber casing (12) on the outside.
3. A powder flowability measuring device according to claim 1, characterised in that the drum is provided with more than one air hole (4).
4. The powder flowability measuring device according to claim 1, characterised in that a light source (8) is provided on the support (1) above the camera.
5. A powder flowability measuring device according to claim 1, wherein said drum (5) is of a two-lobe construction.
6. The powder flowability measuring device of claim 1, wherein the drum is made of transparent organic glass on one side close to the camera, black oxidation treatment is performed on the inner wall of the other side, the inner wall of the organic glass is coated with an ITO coating, and a circle of grooves (11) are formed on the inner side of the side wall of the drum.
7. The powder flowability measuring device according to claim 1, wherein the flowability of the powder is measured by combining the torque acquired by the torque sensor (3) and the powder flow profile photographed by the camera (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122598965.3U CN217484100U (en) | 2021-10-27 | 2021-10-27 | Powder fluidity measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122598965.3U CN217484100U (en) | 2021-10-27 | 2021-10-27 | Powder fluidity measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217484100U true CN217484100U (en) | 2022-09-23 |
Family
ID=83303103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122598965.3U Active CN217484100U (en) | 2021-10-27 | 2021-10-27 | Powder fluidity measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217484100U (en) |
-
2021
- 2021-10-27 CN CN202122598965.3U patent/CN217484100U/en active Active
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