CN220825475U - Reciprocating tooth-biting type powder discharging mechanism - Google Patents
Reciprocating tooth-biting type powder discharging mechanism Download PDFInfo
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- CN220825475U CN220825475U CN202321803170.4U CN202321803170U CN220825475U CN 220825475 U CN220825475 U CN 220825475U CN 202321803170 U CN202321803170 U CN 202321803170U CN 220825475 U CN220825475 U CN 220825475U
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- 239000000843 powder Substances 0.000 title claims abstract description 204
- 230000007246 mechanism Effects 0.000 title claims abstract description 29
- 238000007599 discharging Methods 0.000 title abstract description 21
- 230000000903 blocking effect Effects 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims 8
- 238000010146 3D printing Methods 0.000 abstract description 3
- 239000002245 particle Substances 0.000 description 6
- 238000007639 printing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000003892 spreading Methods 0.000 description 4
- 230000007480 spreading Effects 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000007790 scraping Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003110 molding sand Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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Abstract
The utility model belongs to the field of 3D printing equipment, in particular to a reciprocating tooth-biting type powder discharging mechanism which comprises a swinging powder discharging plate and a fixed powder discharging plate, wherein the swinging powder discharging plate and the fixed powder discharging plate are symmetrically arranged, a plurality of first protruding teeth are arranged at the lower end of the swinging powder discharging plate, a plurality of second protruding teeth are arranged at the lower end of the fixed powder discharging plate, the fixed powder discharging plate is connected with the swinging powder discharging plate through a spring, and the swinging powder discharging plate is driven by a power mechanism. The utility model has more stable powder discharge, almost consistent powder discharge amount each time, error within 5 percent, and can rub off agglomerated powder to make the powder discharge more uniform.
Description
Technical Field
The utility model belongs to the field of 3D printing equipment, and particularly relates to a reciprocating tooth-biting type powder discharging mechanism.
Background
The 3DP technology is based on digital model files, and uses powdery sand, metal, ceramic and other bondable materials to form parts by means of layer-by-layer printing and solidification, and is one of the main means of digital manufacturing.
The existing powder discharging mechanism used by the 3D printing equipment generally uses a vibration motor or ultrasonic waves to enable powder to fall onto a printing cylinder or uses a belt to convey the powder to fall onto the printing cylinder, and the problem is that the powder discharging amount is difficult to ensure to be the same every time, the belt type is only suitable for coarse powder such as molding sand, and the like, and for fine powder such as metal powder and ceramic powder, only the vibration motor or ultrasonic waves can be used, however, the metal powder and the ceramic powder are easy to be clustered, the clustered powder is stuck together, the fluidity is poor, vibration or ultrasonic waves are not required to scatter the powder, the powder discharging is unstable, the ultrasonic waves are expensive, and the cost is high.
Disclosure of utility model
In order to overcome the defects in the prior art, the utility model provides a reciprocating tooth-biting type powder discharging mechanism, which is more stable in powder discharging and more uniform in powder discharging. The technical problems to be solved by the utility model are realized by the following technical scheme:
The utility model provides a reciprocal tooth-biting type powder mechanism of going down, includes that the powder board is gone down in the swing and fixed powder board under, and the powder board is gone down in the swing and fixed powder board symmetry setting under, and the lower extreme of powder board sets up a plurality of first protruding teeth under the swing, and the lower extreme of powder board sets up a plurality of second protruding teeth under fixed, and the powder board is gone down through spring coupling under fixed powder board and the swing, and the powder board is gone down in the swing passes through power unit drive.
Further, the first protruding teeth and the second protruding teeth are arranged left and right, the included angle between the first protruding teeth and the horizontal plane is 20 degrees to 90 degrees, and the included angle between the second protruding teeth and the horizontal plane is 90 degrees to 160 degrees.
Further, the first protruding teeth and the second protruding teeth are arranged left and right, the included angle between the first protruding teeth and the horizontal plane is 90 degrees to 160 degrees, and the included angle between the second protruding teeth and the horizontal plane is 20 degrees to 90 degrees.
Further, the first protruding teeth and the second protruding teeth are arranged up and down.
Specifically, a first bulge is arranged at the lower end of the swinging lower powder plate, and a second bulge is arranged at the lower end of the fixed lower powder plate.
Specifically, the inner side of the swinging lower powder plate is an inclined plane, and the inner side of the fixed lower powder plate is an inclined plane.
Specifically, the spring is an extension spring, one end of the extension spring is fixedly connected with the swinging powder feeding plate through a spring support, and the other end of the extension spring is fixedly connected with the fixed powder feeding plate through a spring support.
Preferably, one end of the swing lower powder plate is fixedly connected with the spring piece, the other end of the swing lower powder plate is connected with the power mechanism, the power mechanism is an eccentric power mechanism, the eccentric power mechanism comprises a thrust arm, a bearing seat and a servo motor, the thrust arm is arranged in the bearing seat, and the thrust arm is driven by the servo motor.
Preferably, the first end face blocking walls are arranged at two ends of the swinging lower powder plate, the second end face blocking walls are arranged at two ends of the fixed lower powder plate, and the swinging lower powder plate, the first end face blocking walls, the fixed lower powder plate and the second end face blocking walls form a powder storage space.
Preferably, the powder feeding device further comprises a vibrating motor, wherein the vibrating motor is fixedly connected with the fixed powder feeding plate through a motor base.
The utility model has more stable powder discharge, almost consistent powder discharge amount each time, error within 5 percent, and can rub off agglomerated powder to make the powder discharge more uniform.
Drawings
FIG. 1 is a top view of the present utility model;
FIG. 2 is an exploded view of the first embodiment;
fig. 3 is an enlarged view of a portion a of fig. 1;
Fig. 4 is an enlarged view of a portion B of fig. 2;
FIG. 5 is a cross-sectional view of the present utility model;
FIG. 6 is a schematic diagram of a power mechanism;
FIG. 7 is a schematic view of the structure of the powder hopper;
FIG. 8 is a schematic view of a first tooth and a second tooth according to an embodiment;
FIG. 9 is a schematic view of the structure of a first lobe and a second lobe according to the second embodiment;
FIG. 10 is an exploded view of the third embodiment;
FIG. 11 is a schematic view of the structure of a third embodiment of a first lobe and a second lobe;
Fig. 12 is a schematic structural view of a fourth embodiment;
FIG. 13 is a schematic illustration of a powder lay-up;
FIG. 14 is a schematic view of powder particles after powder placement;
FIG. 15 is a schematic view of the powder particles after vibration;
FIG. 16 is a schematic view showing the structure of a first tooth and a second tooth according to the fifth embodiment;
FIG. 17 is a schematic view showing the structure of a first tooth and a second tooth according to the sixth embodiment;
Fig. 18 is a schematic structural view of a seventh embodiment of the first and second teeth.
Detailed Description
Example 1
FIG. 1 is a top view of the present utility model; FIG. 2 is an exploded view of the first embodiment; fig. 3 is an enlarged view of a portion a of fig. 1, and fig. 4 is an enlarged view of a portion B of fig. 2. As shown in fig. 1 to 4, a reciprocating tooth-biting type powder feeding mechanism comprises a swing lower powder plate 1 and a fixed lower powder plate 2, wherein the swing lower powder plate 1 and the fixed lower powder plate 2 are symmetrically arranged, a plurality of first protruding teeth 1.1 are arranged at the lower end of the swing lower powder plate 1, a plurality of second protruding teeth 2.1 are arranged at the lower end of the fixed lower powder plate 2, the first protruding teeth 1.1 and the second protruding teeth 2.1 are arranged in a mirror symmetry manner, the fixed lower powder plate 2 and the swing lower powder plate 1 are connected through springs, and the swing lower powder plate 1 is driven by a power mechanism.
The included angle between the first protruding tooth 1.1 and the horizontal plane is 20-90 degrees, the included angle between the second protruding tooth 2.1 and the horizontal plane is 90-160 degrees, or the included angle between the first protruding tooth 1.1 and the horizontal plane is 90-160 degrees, and the included angle between the second protruding tooth 2.1 and the horizontal plane is 20-90 degrees; in this embodiment, the included angle a between the first protruding tooth 1.1 and the horizontal plane is 55 °, and since the swing lower powder plate 1 and the fixed lower powder plate 2 are symmetrically arranged, the first protruding tooth 1.1 and the second protruding tooth 2.1 are mirror symmetry, the included angle between the second protruding tooth 2.1 and the horizontal plane is 125 °, and a powder falling gap is formed between the first protruding tooth 1.1 and the second protruding tooth 2.1.
Fig. 5 is a cross-sectional view of the present utility model, as shown in fig. 5, the spring of the present utility model is an extension spring 3, one end of the extension spring 3 is fixedly connected with the swinging lower powder plate 1 through a spring support, the other end of the extension spring 3 is fixedly connected with the fixed lower powder plate 2 through a spring support, the extension spring 3 plays a role of adjusting the fit degree between the swinging lower powder plate 1 and the fixed lower powder plate 2, 1 extension spring 3 may be provided, or a plurality of extension springs may be provided, and the extension spring 3 in this embodiment is 3.
Fig. 6 is a schematic structural diagram of a power mechanism, as shown in fig. 6, one end of a swinging lower powder plate 1 is fixedly connected with a spring piece 4, the other end of the swinging lower powder plate 1 is connected with the power mechanism, the power mechanism of the utility model is an eccentric power mechanism, the eccentric power mechanism comprises a push arm 5, a bearing seat 6 and a servo motor 7, the push arm 5 is arranged in the bearing seat 6, the push arm 5 is driven by the servo motor 7, the spring piece 4 of the embodiment is fixedly connected with a first fixed seat 9, the bearing seat 6 is fixedly connected with a second fixed seat 10, and the swinging lower powder plate 1 horizontally reciprocates relative to the fixed lower powder plate 2 after being fixed by the first fixed seat 9 and the second fixed seat 10.
The inner side of the swing lower powder plate 1 of the embodiment is an inclined plane 1.4, the inner side of the fixed lower powder plate 2 is an inclined plane 2.4, the two ends of the swing lower powder plate 1 are provided with first end face blocking walls 1.3, the two ends of the fixed lower powder plate 2 are provided with second end face blocking walls 2.3, and the swing lower powder plate 1, the first end face blocking walls 1.3, the fixed lower powder plate 2 and the second end face blocking walls 2.3 form a powder storage space.
Fig. 7 is a schematic structural diagram of a powder hopper, as shown in fig. 7, the powder hopper 8 is an inverted trapezoid funnel, the powder hopper 8 is arranged between the fixed lower powder plate 2 and the swinging lower powder plate 1, vibration reduction plates can be arranged on the left side and the right side of the powder hopper 8, the powder hopper can be matched with the powder hopper 8 for use, powder falls into the powder hopper 8 firstly, then falls into the swinging lower powder plate 1 and the fixed lower powder plate 2, and the powder hopper 8 can not be used, and the powder can directly fall into a powder storage space of the utility model.
The powder falling device is not influenced by the powder storage space and the height of the powder pile in the powder hopper 8 when powder falls, and the powder can be supplemented to the tooth openings of the fixed powder falling plate 2 and the swing powder falling plate 1 by the vibration of the swing powder falling plate 1 as long as the powder storage space and the powder hopper 8 hold the powder, so that the powder falls onto the printing cylinder; compared with the existing vibration powder falling, ultrasonic powder falling and the like, the utility model is easily influenced by factors such as the height of a powder pile, the pasting process of a powder discharging screen and the like, has low cost and more stable powder discharging, and can be matched with a scraper or a double roller for use.
Because the fluidity of the powder is poor, the powder cannot fall down when the powder is not rubbed, and when the powder is rubbed, the powder falls down from gaps between every two protruding teeth, namely from gaps between every two first protruding teeth 1.1 and gaps between every two second protruding teeth 2.1, and the size of the gaps can be adjusted according to actual conditions.
The influence factors of the powder falling precision of the utility model are as follows: 1. swinging the lower powder plate and fixing the inner wall processing roughness of the lower powder plate; 2. angle, depth, and smoothness of the first and second lobes; 3. a spacing between the first lobe and the first lobe, and a spacing between the second lobe and the second lobe; 4. the contact flatness of the swinging lower powder plate and the fixed lower powder plate; under the condition that the factors reach the standards, the utility model can achieve high-precision control of the powder discharge amount, and the experiment repeatedly tests that the powder discharge amount is almost consistent each time, the error is within 5 percent, and the utility model can rub off the agglomerated powder without the situations of more powder discharge amount and insufficient powder discharge amount.
Fig. 8 is a schematic structural view of a first tooth and a second tooth according to the first embodiment, as shown in fig. 8, the first tooth 1.1 of the first embodiment is disposed inside the swing lower powder plate 1 and protrudes toward the lower end of the swing lower powder plate 1, and the second tooth 2.1 is also disposed inside the fixed lower powder plate 2 and protrudes toward the lower end of the fixed lower powder plate 2.
Example two
Fig. 9 is a schematic structural view of a first protruding tooth and a second protruding tooth of the second embodiment, as shown in fig. 9, the first protruding tooth 1.1 of the second embodiment is disposed on the inner side of the swinging lower powder plate 1, and the second protruding tooth 2.1 is disposed on the inner side of the fixed lower powder plate 2, that is, the first protruding tooth 1.1 and the second protruding tooth 2.1 do not protrude from the lower end. Other arrangements of the second embodiment are the same as those of the first embodiment, and will not be described here again.
Example III
FIG. 10 is an exploded view of the third embodiment; fig. 11 is a schematic structural view of a first protruding tooth and a second protruding tooth of the third embodiment, as shown in fig. 10 and 11, the first protruding tooth 1.1 of the third embodiment is disposed at the lower end of the swinging lower powder plate 1, the second protruding tooth 2.1 is disposed at the lower end of the fixed lower powder plate 2, the first protruding tooth 1.1 and the second protruding tooth 2.1 are mirror-symmetrical, the first protruding tooth 1.2 is disposed at the lower end of the swinging lower powder plate 1, the second protruding tooth 2.2 is disposed at the lower end of the fixed lower powder plate 2, the first protruding tooth 1.2 is disposed outside the first protruding tooth 1.1 and is connected with the first protruding tooth 1.1, the second protruding tooth 2.2 is disposed outside the second protruding tooth 2.1 and is connected with the second scraping tooth 2.1, and the first protruding tooth 1.2 and the second protruding tooth 2.2 function as scraping blades, so that no additional arrangement is needed. Other arrangements of the third embodiment are the same as those of the first embodiment, and will not be described here again.
Example IV
Fig. 12 is a schematic structural view of a fourth embodiment; FIG. 13 is a schematic illustration of a powder lay-up; fig. 14 is a schematic view of the powder particles after powder placement. As shown in fig. 12 to 14, the fourth embodiment further provides a vibration motor 11, where the vibration motor 11 is fixedly connected with the fixed powder feeding plate 2 through a motor base, so as to drive the fixed powder feeding plate 2 to vibrate, and other arrangements of the fourth embodiment are the same as those of the third embodiment, and are not described herein again.
When the thickness of the powder spreading layer is 0.1-0.5 mm, the fixed lower powder plate 2 is vibrated by the vibrating motor 11, so that the powder particles after powder spreading are rearranged in a compact way, as shown in fig. 14, wherein fig. 14 is the arrangement situation of the powder particles after powder spreading, and fig. 15 is the vibration of the fixed lower powder plate 2 by the vibrating motor 11, so that the powder particles after powder spreading are rearranged in a compact way, the arrangement is tighter left and right, and the arrangement is also tighter up and down, so that the density of a printing model is improved, and each layer is ensured to be a smooth powder layer.
Example five
Fig. 16 is a schematic structural view of a first protruding tooth and a second protruding tooth of the fifth embodiment, as shown in fig. 16, the first protruding tooth 1.1 of the fifth embodiment is disposed on the inner side of the swinging lower powder plate 1 and protrudes toward the lower end of the swinging lower powder plate 1, the second protruding tooth 2.1 is disposed on the inner side of the fixed lower powder plate 2, the first protruding tooth 1.1 and the second protruding tooth 2.1 are arranged up and down, the first protruding tooth 1.1 of the fifth embodiment is a lower protruding tooth, and the second protruding tooth 2.1 is an upper protruding tooth. Other arrangements of the fifth embodiment are the same as those of the first embodiment, and will not be described here again.
Example six
Fig. 17 is a schematic structural diagram of a first lobe 1.1 of the sixth embodiment and a second lobe, as shown in fig. 17, disposed on the inner side of the swing lower powder plate 1, and a second lobe 2.1 disposed on the inner side of the fixed lower powder plate 2, i.e. the first lobe 1.1 and the second lobe 2.1 do not protrude from the lower end, and the first lobe 1.1 and the second lobe 2.1 are arranged up and down, the first lobe 1.1 of the sixth embodiment is an upper lobe, and the second lobe 2.1 is a lower lobe. Other arrangements of the sixth embodiment are the same as those of the first embodiment, and will not be described here again.
Example seven
Fig. 18 is a schematic structural view of a first protrusion 1.1 of the seventh embodiment, as shown in fig. 18, disposed on the inner side of the swing lower powder plate 1 and protruding toward the lower end of the swing lower powder plate 1, a second protrusion 2.1 disposed on the inner side of the fixed lower powder plate 2, the first protrusion 1.1 and the second protrusion 2.1 being arranged up and down, the first protrusion 1.1 of the seventh embodiment being a lower protrusion, the second protrusion 2.1 being an upper protrusion, and a first protrusion 1.2 being disposed on the lower end of the swing lower powder plate 1, a second protrusion 2.2 being disposed on the lower end of the fixed lower powder plate 2, the first protrusion 1.2 being connected with the first protrusion 1.1, the first protrusion 1.2 and the second protrusion 2.2 functioning as a scraper. Other arrangements of the seventh embodiment are the same as those of the first embodiment, and will not be described here again.
In a word, the utility model is more stable to get powder, the powder amount is almost consistent each time, the error is within 5%, and the utility model can rub the agglomerated powder, and the powder is more uniform.
Claims (10)
1. The utility model provides a reciprocal tooth-biting type powder mechanism down, its characterized in that includes that the powder board is gone down in the swing and fixed powder board down, the powder board is gone down in the swing and fixed powder board symmetry sets up the lower extreme of powder board is gone down in the swing sets up a plurality of first protruding teeth the lower extreme of powder board is gone down in the fixed a plurality of second protruding teeth that set up, fixed powder board and swing are gone down the powder board and are passed through spring coupling, the powder board is gone down in the swing passes through power unit drive.
2. The reciprocating biting tooth type powdering device of claim 1, wherein the first and second projecting teeth are arranged in a left-right direction, an included angle between the first projecting tooth and a horizontal plane is 20 ° -90 °, and an included angle between the second projecting tooth and the horizontal plane is 90 ° -160 °.
3. The reciprocating biting tooth type powdering device of claim 1, wherein the first and second projecting teeth are arranged in a left-right direction, an included angle between the first projecting tooth and a horizontal plane is 90 ° -160 °, and an included angle between the second projecting tooth and the horizontal plane is 20 ° -90 °.
4. The reciprocating bite type powdering device of claim 1, wherein the first and second teeth are arranged up and down.
5. The reciprocating bite type breading mechanism of claim 1 wherein a first protrusion is provided at a lower end of said oscillating breading plate and a second protrusion is provided at a lower end of said fixed breading plate.
6. The reciprocating bite type powdering device of claim 1, wherein the inner side of the swinging powdering device is an inclined surface, and the inner side of the fixed powdering device is an inclined surface.
7. The reciprocating biting tooth type powder feeding mechanism according to claim 1, wherein the spring is an extension spring, one end of the extension spring is fixedly connected with the swinging powder feeding plate through a spring support, and the other end of the extension spring is fixedly connected with the fixed powder feeding plate through a spring support.
8. The reciprocating tooth-biting type powder feeding mechanism according to claim 1, wherein one end of the swinging powder feeding plate is fixedly connected with the spring piece, the other end of the swinging powder feeding plate is connected with the power mechanism, the power mechanism is an eccentric power mechanism, the eccentric power mechanism comprises a thrust arm, a bearing seat and a servo motor, the thrust arm is arranged in the bearing seat, and the thrust arm is driven by the servo motor.
9. The reciprocating tooth-biting type powder feeding mechanism according to claim 1, wherein first end face blocking walls are arranged at two ends of the swinging powder feeding plate, second end face blocking walls are arranged at two ends of the fixed powder feeding plate, and the swinging powder feeding plate, the first end face blocking walls, the fixed powder feeding plate and the second end face blocking walls form a powder storage space.
10. The reciprocating bite type powdering device of claim 1, further comprising a vibration motor fixedly connected to the fixed powdering plate through a motor mount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321803170.4U CN220825475U (en) | 2023-07-10 | 2023-07-10 | Reciprocating tooth-biting type powder discharging mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321803170.4U CN220825475U (en) | 2023-07-10 | 2023-07-10 | Reciprocating tooth-biting type powder discharging mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220825475U true CN220825475U (en) | 2024-04-23 |
Family
ID=90722702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321803170.4U Active CN220825475U (en) | 2023-07-10 | 2023-07-10 | Reciprocating tooth-biting type powder discharging mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220825475U (en) |
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2023
- 2023-07-10 CN CN202321803170.4U patent/CN220825475U/en active Active
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