CN109304837B - Single-point injection molding production process for center of plastic magnetic impeller of electronic water pump and two-plate mold for production - Google Patents
Single-point injection molding production process for center of plastic magnetic impeller of electronic water pump and two-plate mold for production Download PDFInfo
- Publication number
- CN109304837B CN109304837B CN201811456927.0A CN201811456927A CN109304837B CN 109304837 B CN109304837 B CN 109304837B CN 201811456927 A CN201811456927 A CN 201811456927A CN 109304837 B CN109304837 B CN 109304837B
- Authority
- CN
- China
- Prior art keywords
- cavity
- water pump
- impeller
- injection molding
- mold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 238000001746 injection moulding Methods 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000002699 waste material Substances 0.000 claims abstract description 14
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 238000007711 solidification Methods 0.000 claims abstract description 5
- 230000008023 solidification Effects 0.000 claims abstract description 5
- 238000002347 injection Methods 0.000 claims description 25
- 239000007924 injection Substances 0.000 claims description 25
- 230000005389 magnetism Effects 0.000 abstract 2
- 239000011797 cavity material Substances 0.000 description 57
- 239000003292 glue Substances 0.000 description 10
- 239000000696 magnetic material Substances 0.000 description 6
- 238000009826 distribution Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a single-point injection molding production process for the center of an electronic water pump plastic magnetic impeller and a two-plate mold for production, wherein the two-plate mold comprises an upper mold and a lower mold, the middle bottom of the upper mold is provided with a blade hub mold cavity at the top of the water pump impeller, the lower mold is provided with an impeller cylinder mold cavity at the lower part of the water pump impeller, the upper mold and the lower mold are combined and connected with an internal mold cavity to form a water pump impeller-shaped cavity, the upper mold is provided with a vertical injection molding cavity, and the bottom of the injection molding cavity is positioned at the center of the hub cavity. And (3) assembling two plate molds, injecting fluid plastic magnetism from the top end of the injection molding cavity, filling the fluid plastic magnetism from the center of the top of the water pump impeller-shaped cavity downwards by 360 degrees from the periphery to fill the cavity, separating an upper mold from a lower mold after solidification, taking out a molded injection molding product, and breaking and removing waste bars in the central injection molding cavity to obtain the water pump impeller. The invention not only improves the product performance, but also reduces the production cost.
Description
Technical Field
The invention relates to the technical field of automobile electronic water pump production, in particular to a two-plate die for producing an electronic water pump plastic magnetic impeller and a central single-point injection molding process for realizing the electronic water pump plastic magnetic impeller by utilizing the two-plate die.
Background
The automobile electronic water pump impeller is formed by plastic magnetic material injection molding, and at present, a three-plate mold two-point glue feeding injection molding process is adopted, as shown in fig. 2, the three-plate mold comprises an upper mold, a middle mold and a lower mold, the bottom of the middle mold is provided with a water pump impeller top blade hub mold cavity, the lower mold is provided with an impeller cylindrical mold cavity at the lower part of the water pump impeller, the middle mold and the lower mold are combined to connect with an inner mold cavity to form a water pump impeller-shaped cavity, an n-shaped lower injection molding cavity is arranged in the middle mold, the bottoms of the left and right vertical footing injection molding cavities are positioned at the left side and the right side of the hub cavity, and a vertical conical injection molding cavity is arranged in the upper mold. During production, the fluid plastic-magnetic material enters from the top end of the upper injection molding cavity and then is shunted to the left side and the right side of the impeller-shaped cavity of the water pump to fill the cavity fully, so that the two-point glue-feeding injection molding liquid plastic-magnetic material is converged in the impeller cylinder cavity from two sides, a welding mark is formed after solidification, and the welding mark has a certain negative effect on the performance of a product. When the mold is to be disassembled, the injection cavity is in a inverted fork type, the middle mold and the lower mold must be separated first, and the injection cavity material nozzle and the water pump impeller molded injection molding product must be broken first, so that the section of the connecting point of the injection cavity material nozzle and the water pump impeller molded injection molding product cannot be too large, the injection molding glue injection pressure must be large enough, the appearance of the product cannot be defect, the injection molding efficiency is low, and the product quality is uncontrollable. The upper die and the middle die are separated to take out waste materials in the injection cavity, the waste materials generally weigh about 19g, the influence of waste material remelting and recycling on the product performance is considered to be large, most of the waste materials are discarded, the plastic magnetic raw materials are about 13 ten thousand per ton, the value is high, and the waste materials in the injection cavity also become an important part of the cost of the raw materials for producing finished products.
Disclosure of Invention
The invention aims to solve the technical problem of providing a central single-point glue injection production process of an electronic water pump plastic magnetic impeller, which adopts two plate molds to feed glue from the central point of the top of a water pump impeller mold cavity, fluid plastic magnetic materials are filled downwards from the top along a cavity channel from 360 degrees around, the injection molded electronic water pump impeller has no weld marks, and the magnetic performance of products is improved. Meanwhile, the production of injection molding waste materials is reduced by more than one fourth, expensive raw materials are saved, and the production cost of products is reduced.
The invention provides a two-plate die for producing a plastic magnetic impeller of an electronic water pump, which is realized by the following technical scheme:
the two-plate die for producing the plastic magnetic impeller of the electronic water pump comprises an upper die and a lower die, wherein the middle bottom of the upper die is provided with a blade hub die cavity at the top of the impeller of the water pump, the lower die is provided with an impeller cylinder die cavity at the lower part of the impeller of the water pump, the upper die and the lower die are connected with an internal die cavity to form a water pump impeller-shaped cavity, a vertical injection cavity is arranged in the upper die, and the bottom of the injection cavity is positioned at the center of the hub cavity.
According to the further improvement scheme of the invention, the injection cavity is cone-shaped, and the diameter of the injection cavity is gradually increased from top to bottom. Because the water pump impeller and the waste rod can be integrally taken out when the upper die and the lower die are opened, the waste rod is broken and removed easily, unlike the two-point glue feeding and opening process which requires two material pulling hooks, the die sinking gate is required to be stopped and removed when the product is stuck on the die, the implementation of the invention improves the product performance and the production efficiency.
According to the further improved scheme of the invention, the blade hub die cavity is formed by circumferentially surrounding blade cavities with a cone shape as a central cavity, and the impeller cylinder die cavity is a cylindrical die cavity.
The invention provides a technical scheme for realizing a central single-point injection molding production process of an electronic water pump plastic magnetic impeller by adopting two plate molds, which comprises the following steps:
the central single-point injection molding production process of the electronic water pump plastic magnetic impeller comprises the steps of assembling the two plate molds according to any one of claims 1 to 3, injecting fluid plastic magnetic from the top end of an injection molding cavity, filling the fluid plastic magnetic from the top center of a water pump impeller-shaped cavity downwards by 360 degrees from the periphery to fill a mold cavity, separating an upper mold from a lower mold after solidification, taking out a molded injection product, and breaking and removing waste bars in the central injection molding cavity to obtain the water pump plastic magnetic impeller.
Compared with the prior art, the invention has the following obvious advantages:
1. the invention is used for producing the electronic water pump impeller to realize single-point glue feeding from the center point of the impeller at the top, the plastic magnetic material is filled downwards from the top along the cavity channel from 360 degrees around, the injection molded electronic water pump plastic magnetic impeller has no weld mark, and the magnetic performance of the product is improved.
2. The waste material in the cavity injection mould is only a truncated cone-shaped bar material, is a part in the upper mould of the original three-plate mould, has the weight less than one third of that of the original waste material, and is only 5-6g, and the cost of the plastic magnetic material is about 0.13 yuan/g at present, so that 1.60 yuan of money can be saved for producing one electronic water pump impeller, and the material cost is greatly saved.
Drawings
FIG. 1 is a cross-sectional view of a two-plate die of the present invention;
FIG. 2 is a cross-sectional view of an original three-plate die;
fig. 3, fig. 4, fig. 5 are magnetic field distribution test diagrams of the central single-point glue injection product of the present invention;
fig. 6, 7 and 8 are magnetic field distribution test charts of conventional two-side two-point glue injection products.
Detailed Description
As shown in fig. 1, the two-plate die comprises an upper die 1 and a lower die 2, wherein the bottom of the upper die 1 is provided with a blade hub die cavity 11 at the top of a water pump impeller, the blade hub die cavity 11 is a blade cavity 112 circumferentially and alternately surrounded by a cone-shaped hub cavity 111 as a central cavity, the lower die 2 is provided with an impeller cylinder die cavity 21 at the lower part of the water pump impeller, the impeller cylinder die cavity 21 is a cylindrical die cavity, the upper die 1 and the lower die 2 are connected with each other to form a water pump impeller-shaped cavity, the upper die 1 is internally provided with a vertical injection cavity 12, the injection cavity 12 is cone-shaped, the diameter of the injection cavity 12 is gradually increased from top to bottom, and the bottom of the injection cavity 12 is positioned at the center of the hub cavity.
The central single-point injection molding production process of the electronic water pump plastic magnetic impeller comprises the steps of assembling the two plate molds, injecting fluid plastic magnetic from the top end of an injection molding cavity, filling the cavity from 360 degrees around downwards from the top center of a water pump impeller-shaped cavity with the fluid plastic magnetic, separating an upper mold from a lower mold after solidification, taking out a molded injection molding product, and breaking off and removing waste bars in the central injection molding cavity to obtain the water pump plastic magnetic impeller.
Compared with the traditional electronic water pump impeller produced by injection molding by two or more point glue inlets at two sides, the electronic water pump impeller produced by central single-point glue injection of the invention has greatly improved magnetic performance. The inventor adopts a Gaussian meter to detect the magnetic properties of the product and the traditional product, and fig. 3, fig. 4 and fig. 5 are magnetic field distribution test charts of the product, and fig. 6, fig. 7 and fig. 8 are magnetic field distribution test charts of the traditional product. The magnetic performance of the impeller of the electronic water pump is good and bad, and three points are mainly integrated from the view point: (1) the size of the N, S pole magnetic peak, with the peak being maximally optimal; (2) The smoother the magnetic value curve of each magnetic pole segment is, the better the magnetic property is; (3) The higher the surrounding area of the magnetic value curve of each magnetic pole section is relative to the rectangular area, the better. As can be seen from the attached drawing, the magnetic performance of the product of the invention is obviously superior to that of the traditional product.
Claims (2)
1. A two-plate mould for producing electronic water pump moulds magnetic impeller, its characterized in that: the novel water pump impeller comprises an upper die (1) and a lower die (2), wherein a blade hub die cavity (11) at the top of a water pump impeller is arranged at the middle bottom of the upper die (1), an impeller cylinder die cavity (21) at the lower part of the water pump impeller is arranged in the lower die (2), blade cavities (112) are circumferentially and alternately arranged around a cone-shaped hub cavity (111) serving as a central cavity, the impeller cylinder die cavity is a cylindrical die cavity, and the upper die (1) and the lower die (2) are combined to form a water pump impeller-shaped cavity; a vertical injection cavity (12) is arranged in the upper die (1), the injection cavity (12) is cone-shaped, and the diameter of the injection cavity is gradually increased from top to bottom; the bottom of the injection molding cavity (12) is positioned at the center of the hub cavity.
2. The central single-point injection molding production process of the plastic magnetic impeller of the electronic water pump is characterized by comprising the following steps of: the two-plate mold of claim 1 is assembled, the fluid plastic magnet is injected from the top end of the injection molding cavity, the fluid plastic magnet fills the mold cavity downwards from 360 degrees around from the top center of the impeller-shaped cavity of the water pump, the upper mold and the lower mold are separated after solidification, the molded injection molding product is taken out, and the waste rod of the central injection molding cavity is broken off, so that the impeller of the water pump plastic magnet is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811456927.0A CN109304837B (en) | 2018-11-30 | 2018-11-30 | Single-point injection molding production process for center of plastic magnetic impeller of electronic water pump and two-plate mold for production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811456927.0A CN109304837B (en) | 2018-11-30 | 2018-11-30 | Single-point injection molding production process for center of plastic magnetic impeller of electronic water pump and two-plate mold for production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109304837A CN109304837A (en) | 2019-02-05 |
| CN109304837B true CN109304837B (en) | 2024-02-27 |
Family
ID=65223476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811456927.0A Active CN109304837B (en) | 2018-11-30 | 2018-11-30 | Single-point injection molding production process for center of plastic magnetic impeller of electronic water pump and two-plate mold for production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109304837B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090041283A (en) * | 2007-10-23 | 2009-04-28 | 박화석 | Injection mold with conformal cooling channel for manufacturing plastic fans |
| CN103302814A (en) * | 2013-06-28 | 2013-09-18 | 慈溪市三佩机械有限公司 | Cylindrical head worm mould |
| CN106863712A (en) * | 2017-02-22 | 2017-06-20 | 台州贝力得模塑有限公司 | Injection mold for producing impeller |
| CN206551416U (en) * | 2017-02-22 | 2017-10-13 | 台州贝力得模塑有限公司 | The injection mold of water pump vane |
| CN206653593U (en) * | 2017-04-05 | 2017-11-21 | 思博模具(宁波)有限公司 | A kind of impeller forming die |
| CN209063401U (en) * | 2018-11-30 | 2019-07-05 | 王鑫伟 | For producing two template dies of electronic water pump modeling magnetic impeller |
-
2018
- 2018-11-30 CN CN201811456927.0A patent/CN109304837B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090041283A (en) * | 2007-10-23 | 2009-04-28 | 박화석 | Injection mold with conformal cooling channel for manufacturing plastic fans |
| CN103302814A (en) * | 2013-06-28 | 2013-09-18 | 慈溪市三佩机械有限公司 | Cylindrical head worm mould |
| CN106863712A (en) * | 2017-02-22 | 2017-06-20 | 台州贝力得模塑有限公司 | Injection mold for producing impeller |
| CN206551416U (en) * | 2017-02-22 | 2017-10-13 | 台州贝力得模塑有限公司 | The injection mold of water pump vane |
| CN206653593U (en) * | 2017-04-05 | 2017-11-21 | 思博模具(宁波)有限公司 | A kind of impeller forming die |
| CN209063401U (en) * | 2018-11-30 | 2019-07-05 | 王鑫伟 | For producing two template dies of electronic water pump modeling magnetic impeller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109304837A (en) | 2019-02-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105345998A (en) | Die for injection molding of insulating framework | |
| CN214820477U (en) | Forming die for injection molding | |
| CN109304837B (en) | Single-point injection molding production process for center of plastic magnetic impeller of electronic water pump and two-plate mold for production | |
| CN209395188U (en) | A kind of side switch injection moulding apparatus | |
| CN209063401U (en) | For producing two template dies of electronic water pump modeling magnetic impeller | |
| CN108327192A (en) | In-mould edge gate automatic-shearing device | |
| CN104512009B (en) | Die casting and the method that hollow plastic mould is manufactured by umbrella shape cast gate | |
| CN209426086U (en) | No waste mine syringe injection mould | |
| CN209426060U (en) | Small size synthetic resin part shaping mould | |
| CN210389980U (en) | Injection mold | |
| CN208410554U (en) | A kind of button molding die | |
| CN208881088U (en) | A kind of runner and pouring gate structure | |
| CN209022379U (en) | A kind of injection mold that can promote plastic products presentation quality | |
| CN209126095U (en) | A kind of uniform moulding injection mold for optical mirror slip | |
| CN206926168U (en) | Monochrome projects IP moulds | |
| CN205202021U (en) | Injection mold that insulating skeleton is two | |
| CN108621380A (en) | A kind of injection mold | |
| CN210552702U (en) | Forming die of lid in garbage bin | |
| CN217021237U (en) | Novel injection mold pouring structure | |
| CN216182321U (en) | Insert type injection mold | |
| CN220447032U (en) | Injection mold for vacuum blood collection tube safety helmet | |
| CN218171206U (en) | Multi-workpiece rapid injection mold | |
| CN110696284A (en) | Automobile plastic water tank mold | |
| CN214926830U (en) | Injection mold with good heat dissipation performance | |
| CN216300023U (en) | Quick injection molding and cooling bellows injection molding device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |