CN209937518U - Forming die of through-flow fan blade - Google Patents
Forming die of through-flow fan blade Download PDFInfo
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- CN209937518U CN209937518U CN201822251202.XU CN201822251202U CN209937518U CN 209937518 U CN209937518 U CN 209937518U CN 201822251202 U CN201822251202 U CN 201822251202U CN 209937518 U CN209937518 U CN 209937518U
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Abstract
The utility model relates to a fan blade processing field especially relates to a forming die of through-flow fan blade. The forming die of the cross-flow fan blade comprises an upper die assembly and a lower die assembly; the upper die assembly comprises an upper die base and an upper die core arranged in the upper die base; the lower die assembly comprises a lower die base and a lower die core arranged in the upper die base; the upper mold core and the lower mold core are butted to form a mold cavity for filling injection molding materials and forming the fan blades, and an injection molding channel for conveying the injection molding materials to the mold cavity and obtaining the material handle after injection molding; an inner cooling water channel is formed in the lower mold core on the inner side of the mold cavity, and an outer cooling water channel is formed in the lower mold core on the outer side of the mold cavity; the inner cooling water channel and the outer cooling water channel are arranged around the circumference of the die cavity. Interior cooling water course and outer cooling water course in this scheme all set up around die cavity circumference, realize circulative cooling, and is more even when reaching the inside and outside both sides of blade effectively refrigerated equally, more effective.
Description
Technical Field
The utility model relates to a fan blade processing field especially relates to a forming die of through-flow fan blade.
Background
The cross-flow fan blade is an air conditioner fan blade, and the cross-flow fan blade comprises a motor shaft disc, a steel shaft disc and a plurality of middle section discs arranged between the motor shaft disc and the steel shaft disc, wherein the motor shaft disc, the steel shaft disc and the middle section discs are all integrally formed by adopting mould injection. The quality of the injection mold plays a crucial role in the quality of plastic products, wherein a cooling system is an important ring, and is particularly prominent for through-flow fan blade injection products, and the fan blade is taken as an important part of the product, and poor cooling effect can cause deformation, distortion, strain, even fracture and other defects on the product. The product reject ratio is increased by strain and breakage; the performance index of the product is influenced by the distortion and deformation.
The existing forming mould of the cross-flow fan blade can refer to the content recorded in the Chinese utility model patent document with the authorization publication number of "CN 206605748U"; in the scheme, an inner cooling water channel is arranged on a mold core at the inner side of a mold cavity, and an outer cooling water channel is arranged on a mold core at the outer side of the mold cavity; the inner cooling water channel and the outer cooling water channel are not arranged around the circumferential direction of the die cavity, but a plurality of row counter bores are arranged along the circumferential direction, and the counter bores are separated into two water channels by the water separation sheets, so that water circulation in the row counter bores is formed. However, each row of holes must have a spacing, so that the holes cannot really act on each blade at 360 degrees, the problem of uneven cooling is caused, the problem of inconsistent local shrinkage of products is caused, and the product has high reject ratio and poor performance stability.
Disclosure of Invention
In order to solve the problem, the utility model aims to provide a forming die of through-flow fan blade, interior cooling water course and the outer cooling water course in this scheme all set up around die cavity circumference, realize circulative cooling, and it is more even when effectively refrigerated equally reaching the inside and outside both sides of blade, it is more effective.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the forming die of the cross-flow fan blade comprises an upper die assembly and a lower die assembly; the upper die assembly comprises an upper die base and an upper die core arranged in the upper die base; the lower die assembly comprises a lower die base and a lower die core arranged in the upper die base; the upper mold core and the lower mold core are butted to form a mold cavity for filling injection molding materials and forming the fan blades, and an injection molding channel for conveying the injection molding materials to the mold cavity and obtaining the material handle after injection molding; the method is characterized in that: an inner cooling water channel is formed in the lower mold core on the inner side of the mold cavity, and an outer cooling water channel is formed in the lower mold core on the outer side of the mold cavity; the inner cooling water channel and the outer cooling water channel are arranged around the circumference of the die cavity.
Preferably, the lower mold core comprises a lower mold core main body and a lower mold core insert embedded in the center of the lower mold core main body; the inner cooling water channel is arranged on the outer side wall surface of the lower mold core insert, the lower mold core main body encloses and seals the inner cooling water channel, and a water inlet channel and a water outlet channel which are communicated with the inner cooling water channel are arranged.
Preferably, the outer cooling water channel is arranged on the outer side wall surface of the lower mold core; the lower die base encloses and seals the outer cooling water channel and is provided with a water inlet channel and a water outlet channel which are communicated with the outer cooling water channel.
Preferably, the outer cooling water channel and the inner cooling water channel are both provided with two channels.
Preferably, the injection channel comprises a first channel section positioned at the center of the upper mold core and a plurality of second channel sections communicated from the lower end part of the first channel section to the mold cavity; the second channel section is positioned on the joint surface of the upper mold core and the lower mold core, the lower mold assembly further comprises a material pulling rod, the material pulling rod is arranged at the center of the lower mold base in a penetrating mode, and the upper end portion of the material pulling rod is positioned at the intersection of the first channel section and the second channel section of the injection molding channel.
Preferably, the material pulling rod is in a conical shape at the upper end part.
The above technical scheme is adopted in the utility model, this technical scheme relates to a forming die of through-flow fan blade, is equipped with interior cooling water course and outer cooling water course on this through-flow fan blade's forming die's the lower mould core, and interior cooling water course and outer cooling water course in this scheme all set up around die cavity circumference, realize circulative cooling, and it is more even when reaching the effective refrigerated in the inside and outside both sides of blade equally, it is more effective. Actual production statistics show that 1, the production efficiency is improved by 15-30%; 2. the occurrence of undesirable phenomena such as blade fracture, strain and the like is avoided; 3. the consistency of performance data in a performance comparison test is better, and the stability is better.
Drawings
FIG. 1 is a schematic structural view of example 1 (the material shank is omitted from the drawing, and the injection molding channel is shown).
Fig. 2 is a structural view of an inner cooling water passage in embodiment 1.
Fig. 3 is a schematic structural view of a lower mold core in embodiment 2.
Fig. 4 is a schematic view of the structure of a lower core insert in example 2.
Detailed Description
The preferred embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "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 only for convenience of description and 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.
Example 1:
the forming die for the cross-flow fan blade shown in fig. 1-2 comprises an upper die assembly and a lower die assembly. The upper die assembly comprises an upper die base 11 and an upper die core 12 arranged in the upper die base 11. The lower die assembly includes a lower die base 21, and a lower die core 22 provided in the upper die base 11. The upper mold core 12 and the lower mold core 22 are butted to form a mold cavity for filling injection molding materials and forming the fan blades 3, and an injection molding channel for conveying the injection molding materials to the mold cavity and obtaining the material handles 4 after injection molding.
The injection channel comprises a first channel section 41 in the center of the upper mold core 12 and a plurality of second channel sections 42 communicating from the lower end of the first channel section 41 to the mold cavity. A sprue bush 43 is arranged at the center of the upper mold core 12, and the first channel section 41 is positioned in the sprue bush 43. Specifically, a counter bore is arranged at the center of the upper die core 12, and the sprue bush 43 is positioned in the counter bore. The cap portion of the sprue bushing 43 is located within the outer stepped bore of the counterbore. In this embodiment, the sprue bush 43 is moved downward, and the cap portion thereof extends into the upper mold core 12, thereby further shortening the length of the charging handle in the first channel section 41. The second channel section 42 is located on the mating surfaces of the upper mold core 12 and the lower mold core 22, the start end of the second channel section 42 is received on the end portion of the first channel section 41, the end portion of the second channel section 42 is communicated with the mold cavity, and the second channel section 42 is disposed in the radial direction of the mold cavity.
The technical scheme relates to a forming die of a through-flow fan blade, an injection molding channel of the forming die comprises a first channel section 41 and a plurality of second channel sections 42, the first channel section 41 is positioned in the center of an upper die core 12 and used for introducing injection molding materials, the second channel sections 42 are positioned on the die joint surfaces of the upper die core 12 and a lower die core 22, and the second channel sections 42 can shunt the injection molding materials at the tail ends of the first channel sections 41 and introduce the injection molding materials into the die cavity. By adopting the scheme, the length of the channel of the injection molding channel is greatly shortened, so that the cooling time of the material handle can be reduced, the production efficiency is improved, and the raw materials are saved.
In addition, the lower die assembly further comprises a material pulling rod 23, the material pulling rod 23 is arranged at the center of the lower die base 21 in a penetrating mode, and the upper end portion of the material pulling rod is located at the intersection of a first channel section 41 and a second channel section 42 of the injection molding channel. In one preferred embodiment, the material pulling rod 23 has a tapered shape at its upper end. Adopt the toper to draw material pole 23 structure, on the one hand, the toper draws the pointed end of material pole 23 and still plays the reposition of redundant personnel effect, can shunt the material of moulding plastics, promotes the smooth and easy nature of the flow of the material of moulding plastics. On the other hand, the material handle formed at the intersection of the first channel section 41 and the second channel section 42 is greatly reduced in thickness by adopting a tip structure, so that raw materials are saved, the cooling time of the material handle is reduced, and the production efficiency is improved.
In addition, a cooling system is also arranged in the forming die. Specifically, an inner cooling water channel 51 is formed on the lower mold core 22 on the inner side of the mold cavity, and an outer cooling water channel 52 is formed on the lower mold core 22 on the outer side of the mold cavity. The outer cooling water passages 52 are provided circumferentially around the cavity, and the outer cooling water passages 52 are provided on the outer side wall surface of the lower core 22. The lower die base 21 encloses and seals the outer cooling water channel 52, and is provided with a water inlet channel and a water outlet channel which are communicated with the outer cooling water channel 52. The inner cooling water channel 51 includes a plurality of inner cooling water channels 53 circumferentially distributed along the same circumferential line, each inner cooling water channel 53 is divided into two water passages only having inner end portions communicated with each other by a built-in partition plate 54, and the lower mold base 21 is provided with a water inlet channel and a water outlet channel respectively communicated with the outer end portions of the two water passages. In this embodiment, the plurality of internal cooling water channels 53 are regularly distributed along the same circumferential line at an angle equal to the center of the circle in the circumferential direction. As shown in fig. 2, 6 inner cooling water tanks 53 are provided, and the included angle between the centers of two adjacent inner cooling water tanks 53 is 60 °.
This scheme is through setting up interior cooling water course 51 and outer cooling water course 52, gives effective cooling simultaneously in the inside and outside both sides of blade, improves the cooling effect of blade. However, the inner cooling water channel 51 is designed by adding a cooling water channel inside the mold cavity and dividing the counter bore into two parts by a partition plate to achieve the effect of circular cooling. It is the spacing that each cooling water channel must have, making it impractical to act on each blade at 360 deg., resulting in uneven cooling.
Example 2:
the embodiment also relates to a forming die of the cross-flow fan blade, as shown in fig. 3 and 4, the difference from the scheme of embodiment 1 is only that: the lower mold core 22 includes a lower mold core main body 24, and a lower mold core insert 25 inserted into the center of the lower mold core main body 24. The inner cooling water channel 51 is arranged around the circumference of the mold cavity, the inner cooling water channel 51 is arranged on the outer side wall surface of the lower mold core insert 25, and the lower mold core main body 24 encloses and seals the inner cooling water channel 51 and is provided with a water inlet channel and a water outlet channel communicated with the inner cooling water channel 51. Interior cooling water course 51 and outer cooling water course 52 in this scheme all set up around die cavity circumference, realize circulative cooling, and it is more even when reaching the inside and outside both sides effective cooling of blade equally, more effective. Actual production statistics show that 1, the production efficiency is improved by 15-30%; 2. the occurrence of undesirable phenomena such as blade fracture, strain and the like is avoided; 3. the consistency of performance data in a performance comparison test is better, and the stability is better.
In addition, the material pulling rod 23 is arranged in a matching mode. And a material pulling shaft hole 26 for the material pulling rod 23 to pass through is arranged at the center of the lower mold core main body 24 and the lower mold core insert 25.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (4)
1. The forming die of the cross-flow fan blade comprises an upper die assembly and a lower die assembly; the upper die assembly comprises an upper die base and an upper die core arranged in the upper die base; the lower die assembly comprises a lower die base and a lower die core arranged in the upper die base; the upper mold core and the lower mold core are butted to form a mold cavity for filling injection molding materials and forming the fan blades, and an injection molding channel for conveying the injection molding materials to the mold cavity and obtaining the material handle after injection molding; the method is characterized in that: an inner cooling water channel is formed in the lower mold core on the inner side of the mold cavity, and an outer cooling water channel is formed in the lower mold core on the outer side of the mold cavity; the inner cooling water channel and the outer cooling water channel are arranged around the circumference of the die cavity.
2. The forming die of the cross-flow fan blade of claim 1, wherein: the lower die core comprises a lower die core main body and a lower die core insert embedded in the center of the lower die core main body; the inner cooling water channel is arranged on the outer side wall surface of the lower mold core insert, the lower mold core main body encloses and seals the inner cooling water channel, and a water inlet channel and a water outlet channel which are communicated with the inner cooling water channel are arranged.
3. The forming die of the cross-flow fan blade of claim 2, wherein: the outer cooling water channel is arranged on the outer side wall surface of the lower mold core; the lower die base encloses and seals the outer cooling water channel and is provided with a water inlet channel and a water outlet channel which are communicated with the outer cooling water channel.
4. The forming die of the cross-flow fan blade of claim 3, wherein: the outer cooling water channel and the inner cooling water channel are both provided with two channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822251202.XU CN209937518U (en) | 2018-12-29 | 2018-12-29 | Forming die of through-flow fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822251202.XU CN209937518U (en) | 2018-12-29 | 2018-12-29 | Forming die of through-flow fan blade |
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| Publication Number | Publication Date |
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| CN209937518U true CN209937518U (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822251202.XU Active CN209937518U (en) | 2018-12-29 | 2018-12-29 | Forming die of through-flow fan blade |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111844634A (en) * | 2020-06-04 | 2020-10-30 | 武汉市新洲三角塑料制品有限公司 | Injection mold for motor wind wheel |
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2018
- 2018-12-29 CN CN201822251202.XU patent/CN209937518U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111844634A (en) * | 2020-06-04 | 2020-10-30 | 武汉市新洲三角塑料制品有限公司 | Injection mold for motor wind wheel |
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