CN212191238U - Powder feeding device for injection molding - Google Patents
Powder feeding device for injection molding Download PDFInfo
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- CN212191238U CN212191238U CN202020223028.2U CN202020223028U CN212191238U CN 212191238 U CN212191238 U CN 212191238U CN 202020223028 U CN202020223028 U CN 202020223028U CN 212191238 U CN212191238 U CN 212191238U
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- powder
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- 239000000843 powder Substances 0.000 title claims abstract description 61
- 238000001746 injection moulding Methods 0.000 title claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 36
- 238000012216 screening Methods 0.000 claims abstract description 23
- 238000011068 loading method Methods 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 4
- 238000004663 powder metallurgy Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000002144 chemical decomposition reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000003031 feeding effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
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- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides a powder feeding device for injection molding, which comprises a first feeding cavity, wherein the left side of the first feeding cavity is connected with a screening mechanism; the left side of the screening mechanism is connected with a second feeding cavity; a hemispherical seal head is fixedly arranged on the left side of the second feeding cavity; the lower part of the hemispherical end socket is connected with a collecting tank through a guide pipe; the lower part of the screening mechanism is fixedly connected with a first guide cavity in an inverted quadrangular pyramid shape; the lower part of the first guide cavity is fixedly connected with a blanking mechanism; the lower part of the blanking mechanism is fixedly connected with a second guide cavity in an inverted quadrangular pyramid shape; the lower part of the second guide cavity is fixedly connected with a semicircular cavity; and a blanking pipe is fixedly arranged at the lower part of the semicircular cavity. Injection moulding uses whitewashed loading attachment, can filter the powder simultaneously guaranteeing the material loading effect.
Description
Technical Field
The utility model belongs to the technical field of powder injection moulding technology, especially, relate to a powder loading attachment for injection moulding.
Background
The metal powder injection molding technology is a novel powder metallurgy near-net-shape molding technology formed by introducing the modern plastic injection molding technology into the powder metallurgy field. The basic process of the metal powder injection molding technology is as follows: firstly, solid powder and organic binder are uniformly mixed, are granulated and are injected into a die cavity by an injection molding machine in a heating and plasticizing state for curing and molding, then the binder in a molded blank is removed by a chemical or thermal decomposition method, and finally, a final product is obtained by sintering and densifying. Compared with the traditional process, the method has the characteristics of high precision, uniform tissue, excellent performance, low production cost and the like, and the product is widely applied to the industrial fields of electronic information engineering, biomedical instruments, office equipment, automobiles, machinery, hardware, sports instruments, clock industry, weapons, aerospace and the like.
In the field of powder metallurgy, the process of loading powder for injection molding is generally to fill the powder into a mold quickly. However, the existing powder feeding device for injection molding usually lacks a screening and filtering process for powder, and uneven granularity of the fed powder can cause bubbles in a molded product, so that the quality of the product is greatly reduced. Therefore, it is necessary to design a powder feeding device for injection molding that can perform screening and filtration of powder while ensuring a feeding effect.
Disclosure of Invention
In view of this, the utility model aims at providing a powder loading attachment for injection moulding to filter the powder when the material loading.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a powder feeding device for injection molding comprises a first feeding cavity, wherein the left side of the first feeding cavity is connected with a screening mechanism; the left side of the screening mechanism is connected with a second feeding cavity; a hemispherical seal head is fixedly arranged on the left side of the second feeding cavity; the lower part of the hemispherical end socket is connected with a collecting tank through a guide pipe; the lower part of the screening mechanism is fixedly connected with a first guide cavity in an inverted quadrangular pyramid shape; the lower part of the first guide cavity is fixedly connected with a blanking mechanism; the lower part of the blanking mechanism is fixedly connected with a second guide cavity in an inverted quadrangular pyramid shape; the lower part of the second guide cavity is fixedly connected with a semicircular cavity; and a blanking pipe is fixedly arranged at the lower part of the semicircular cavity.
Further, the screening mechanism comprises a screen cavity; the surface of the screen cavity is provided with a plurality of meshes; a first rotating shaft is rotatably arranged in the screen cavity; the left end of the first rotating shaft extends into the second feeding cavity; a sealing plate is fixedly arranged at the right end of the first feeding cavity; the right end of the first rotating shaft penetrates through the sealing plate; the right end of the first rotating shaft is fixedly connected with an output shaft of the first rotating motor; a first helical blade is fixedly arranged on the first rotating shaft.
Furthermore, the left side of the screen cavity is fixedly connected with the second feeding cavity, and the right side of the screen cavity is fixedly connected with the first feeding cavity; a leakage-proof box is arranged outside the screen cavity; the left side and the right side of the leakage-proof box are fixedly provided with baffle plates; a screen cavity penetrates through the baffle; the baffle on the left side of the leakage-proof box is fixedly connected with the right side of the second feeding cavity; the baffle on the right side of the leakage-proof box is fixedly connected with the left side of the first feeding cavity.
Furthermore, the blanking mechanism comprises a blanking cavity; a second rotating shaft is rotatably arranged in the blanking cavity; the second rotating shaft penetrates through the left end face and the right end face of the blanking cavity; the right end of the second rotating shaft is fixedly connected with an output shaft of a second rotating motor; and a second helical blade is fixedly arranged on the second rotating shaft.
Furthermore, a bearing is arranged at the left end of the second rotating shaft; the bearing is fixedly arranged in the bearing seat; and the bearing seat is fixedly arranged on the left end surface of the blanking cavity.
Further, a mounting plate is fixedly arranged at the bottom of the blanking tube; mounting holes are formed in four corners of the mounting plate.
Furthermore, the lower part of the first feeding cavity and the lower part of the second feeding cavity are both fixedly provided with a strut.
Compared with the prior art, injection moulding powder loading attachment have following advantage:
(1) the utility model is provided with the screening mechanism and the blanking mechanism, and the screening mechanism and the blanking mechanism are mutually matched to screen and filter the powder while ensuring smooth feeding of the powder, so that the particle size of the powder is more uniform, and the quality of injection molding products is improved;
(2) the utility model is fixedly provided with a hemispherical head on the left side of the second feeding cavity, and the spherical inner wall of the hemispherical head is convenient for the powder to slide down;
(3) the utility model is provided with the guide cavity in the shape of an inverted quadrangular pyramid, which is helpful for guiding the falling of the powder;
(4) the utility model realizes the stirring and transportation of the powder through the rotation of the helical blade on the rotating shaft by driving the rotating shaft to rotate by the motor, and the design is favorable for transporting the powder larger than the surface mesh of the screen cavity from the first feeding cavity to the second feeding cavity in the screening mechanism and ensuring that the powder smaller than the surface mesh of the screen cavity falls through the mesh smoothly; in addition, the design is also beneficial to stirring the powder in the blanking mechanism to avoid powder blockage, so that the smooth falling of the powder is ensured;
(5) the utility model is fixedly provided with the mounting plate at the bottom of the blanking pipe, and the four corners of the mounting plate are provided with the mounting holes, so that the feeding device can be conveniently and integrally mounted on the next process equipment through the bolts;
(6) the utility model discloses be provided with the pillar, the pillar can wholly play the supporting role to loading attachment.
Drawings
The accompanying drawings, which form a part hereof, 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 without undue limitation. In the drawings:
fig. 1 is a perspective view of a powder feeding device for injection molding according to the present invention;
fig. 2 is a schematic structural view of a powder feeding device for injection molding according to the present invention;
fig. 3 is a partial view of the powder feeding device for injection molding according to the present invention.
Description of reference numerals:
1-a loading hopper; 2-a first feed chamber; 21-closing plate; 3-a screening mechanism; 31-a screen cavity; 32-a first shaft; 321-a first helical blade; 33-a first rotating electrical machine; 34-a leakage-proof box; 341-a baffle; 4-a second feed cavity; 41-hemispherical end enclosure; 42-a guide tube; 5-a collection tank; 6-a first guide cavity; 7-a blanking mechanism; 71-a second rotating shaft; 711-second helical blade; 712-a bearing; 72-a second rotating electrical machine; 73-a bearing seat; 74-a blanking chamber; 8-a second guide cavity; 9-a semicircular cavity; 91-a blanking pipe; 911-mounting plate; 9111-mounting hole; 10-support column.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. 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," "second," etc. 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 otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 to 3, a powder feeding device for injection molding comprises a first feeding cavity 2, wherein a screening mechanism 3 is connected to the left side of the first feeding cavity 2; the left side of the screening mechanism 3 is connected with a second feeding cavity 4; a hemispherical seal head 41 is fixedly arranged at the left side of the second feeding cavity 4, and the spherical inner wall of the hemispherical seal head 41 is convenient for powder to slide downwards; the lower part of the hemispherical head 41 is connected with a collecting tank 5 through a guide pipe 42; the lower part of the screening mechanism 3 is fixedly connected with a first guide cavity 6 in the shape of an inverted quadrangular pyramid; the lower part of the first guide cavity 6 is fixedly connected with a blanking mechanism 7; the lower part of the blanking mechanism 7 is fixedly connected with a second guide cavity 8 in the shape of an inverted quadrangular pyramid; the lower part of the second guide cavity 8 is fixedly connected with a semicircular cavity 9; a blanking pipe 91 is fixedly arranged at the lower part of the semicircular cavity 9;
the screening mechanism 3 comprises a screen cavity 31; the surface of the screen cavity 31 is provided with a plurality of meshes; a first rotating shaft 32 is rotatably arranged in the screen cavity 31; the left end of the first rotating shaft 32 extends into the second feeding cavity 4; a sealing plate 21 is fixedly arranged at the right end of the first feeding cavity 2; the right end of the first rotating shaft 32 passes through the closing plate 21; the right end of the first rotating shaft 32 is fixedly connected with an output shaft of a first rotating motor 33; a first helical blade 321 is fixedly arranged on the first rotating shaft 32; the first rotating motor 33 drives the first rotating shaft 32 to rotate, the first spiral blade 321 on the first rotating shaft 32 can transport powder while stirring the powder, the first spiral blade 321 can transport powder larger than the meshes on the surface of the screen cavity 31 from the first feeding cavity 2 to the second feeding cavity 4, and the stirring effect of the first spiral blade 321 can ensure that the powder smaller than the meshes on the surface of the screen cavity 31 can smoothly fall through the meshes on the surface of the screen cavity 31;
the left side of the screen cavity 31 is fixedly connected with the second feeding cavity 4, and the right side of the screen cavity 31 is fixedly connected with the first feeding cavity; a leakage-proof box 34 is arranged outside the screen cavity 31; the left and right sides of the leakage-proof box 34 are fixedly provided with baffles 341; the screen chamber 31 passes through the baffle 341; the baffle 341 on the left side of the leakage-proof box 34 is fixedly connected with the right side of the second feeding cavity 4; the baffle 341 on the right side of the leakage-proof box 34 is fixedly connected with the left side of the first feeding cavity 2; the baffle 341 can prevent powder from spilling out of the feeding device during the screening process;
a blanking mechanism 7 including a blanking chamber 74; a second rotating shaft 71 is rotatably arranged in the blanking cavity 74; the second rotating shaft 71 penetrates through the left end face and the right end face of the blanking cavity 74; the right end of the second rotating shaft 71 is fixedly connected with an output shaft of a second rotating motor 72; a second helical blade 711 is fixedly arranged on the second rotating shaft 71; the second rotating motor 72 drives the second rotating shaft 71 to rotate, and the second helical blade 711 on the second rotating shaft 71 can transport the powder while stirring the powder, so that the powder can smoothly fall down;
a bearing 712 is arranged at the left end of the second rotating shaft 71; the bearing 712 is fixedly mounted in the bearing seat 73; the bearing seat 73 is fixedly arranged on the left end surface of the blanking cavity 74;
the bottom of the blanking pipe 91 is fixedly provided with a mounting plate 911; mounting holes 9111 are formed in four corners of the mounting plate 911; the feeding device is integrally mounted on the next process equipment by inserting the bolts into the mounting holes 9111;
the lower part of the first feeding cavity 2 and the lower part of the second feeding cavity 4 are both fixedly provided with a support column 10, and the support column 10 can support the whole feeding device.
The utility model discloses a theory of operation:
when the powder feeding device for injection molding is used, powder for injection molding is firstly added into the charging hopper 1, and the powder enters the first feeding cavity 2 along the charging hopper 1; the first rotating motor 33 drives the first rotating shaft 32 to rotate, and the powder gradually enters the screening mechanism 3 under the action of the first helical blade 321 on the first rotating shaft 32; when the powder passes through the screen cavity 31, the powder larger than the meshes on the surface of the screen cavity 31 is transported to the second feeding cavity 4, and the powder enters the guide pipe 42 along the inner surface of the hemispherical head 41 and then falls into the collecting tank 5 through the guide pipe 42; powder smaller than the meshes on the surface of the screen cavity 31 falls into the first guide cavity 6 through the meshes on the surface of the screen cavity 31 and then enters the blanking mechanism 7, the second rotating motor 72 drives the second rotating shaft 71 to rotate, the powder smaller than the meshes on the surface of the screen cavity 31 falls into the semicircular cavity 9 along the second guide cavity 8 under the action of the second helical blade 711 on the second rotating shaft 71, and finally the powder enters the next process link through the blanking pipe 91 arranged at the lower part of the semicircular cavity 9.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a powder loading attachment for injection moulding which characterized in that: the device comprises a first feeding cavity (2), wherein the left side of the first feeding cavity (2) is connected with a screening mechanism (3); the left side of the screening mechanism (3) is connected with a second feeding cavity (4); a hemispherical seal head (41) is fixedly arranged on the left side of the second feeding cavity (4); the lower part of the hemispherical end socket (41) is connected with a collecting tank (5) through a guide pipe (42); the lower part of the screening mechanism (3) is fixedly connected with a first guide cavity (6) in an inverted quadrangular pyramid shape; the lower part of the first guide cavity (6) is fixedly connected with a blanking mechanism (7); the lower part of the blanking mechanism (7) is fixedly connected with a second guide cavity (8) in the shape of an inverted quadrangular pyramid; the lower part of the second guide cavity (8) is fixedly connected with a semicircular cavity (9); and a blanking pipe (91) is fixedly arranged at the lower part of the semicircular cavity (9).
2. The powder feeding device for injection molding according to claim 1, characterized in that: the screening mechanism (3) comprises a screen cavity (31); the surface of the screen cavity (31) is provided with a plurality of meshes; a first rotating shaft (32) is rotatably arranged in the screen cavity (31); the left end of the first rotating shaft (32) extends into the second feeding cavity (4); a sealing plate (21) is fixedly arranged at the right end of the first feeding cavity (2); the right end of the first rotating shaft (32) penetrates through the sealing plate (21); the right end of the first rotating shaft (32) is fixedly connected with an output shaft of a first rotating motor (33); a first helical blade (321) is fixedly arranged on the first rotating shaft (32).
3. The powder feeding device for injection molding according to claim 2, characterized in that: the left side of the screen cavity (31) is fixedly connected with the second feeding cavity (4), and the right side of the screen cavity (31) is fixedly connected with the first feeding cavity; a leakage-proof box (34) is arranged outside the screen cavity (31); baffles (341) are fixedly arranged on the left side and the right side of the leakage-proof box (34); the screen cavity (31) penetrates through the baffle (341); the baffle (341) on the left side of the leakage-proof box (34) is fixedly connected with the right side of the second feeding cavity (4); the baffle (341) on the right side of the leakage-proof box (34) is fixedly connected with the left side of the first feeding cavity (2).
4. The powder feeding device for injection molding according to claim 1, characterized in that: the blanking mechanism (7) comprises a blanking cavity (74); a second rotating shaft (71) is rotatably arranged in the blanking cavity (74); the second rotating shaft (71) penetrates through the left end face and the right end face of the blanking cavity (74); the right end of the second rotating shaft (71) is fixedly connected with an output shaft of a second rotating motor (72); and a second helical blade (711) is fixedly arranged on the second rotating shaft (71).
5. The powder feeding device for injection molding according to claim 4, characterized in that: a bearing (712) is arranged at the left end of the second rotating shaft (71); the bearing (712) is fixedly arranged in the bearing seat (73); and the bearing seat (73) is fixedly arranged on the left end surface of the blanking cavity (74).
6. The powder feeding device for injection molding according to claim 1, characterized in that: the bottom of the blanking pipe (91) is fixedly provided with a mounting plate (911); mounting holes (9111) are opened at four corners of the mounting plate (911).
7. The powder feeding device for injection molding according to claim 1, characterized in that: and the lower parts of the first feeding cavity (2) and the second feeding cavity (4) are both fixedly provided with a strut (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020223028.2U CN212191238U (en) | 2020-02-26 | 2020-02-26 | Powder feeding device for injection molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020223028.2U CN212191238U (en) | 2020-02-26 | 2020-02-26 | Powder feeding device for injection molding |
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| Publication Number | Publication Date |
|---|---|
| CN212191238U true CN212191238U (en) | 2020-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020223028.2U Active CN212191238U (en) | 2020-02-26 | 2020-02-26 | Powder feeding device for injection molding |
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| Country | Link |
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| CN (1) | CN212191238U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113618065A (en) * | 2021-08-08 | 2021-11-09 | 曹菁 | Powder metallurgy injection molding system |
-
2020
- 2020-02-26 CN CN202020223028.2U patent/CN212191238U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113618065A (en) * | 2021-08-08 | 2021-11-09 | 曹菁 | Powder metallurgy injection molding system |
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