Injection molding method
US-2020307029-A1 · Oct 1, 2020 · US
Method for producing an injection molded part, injection mold and fan impeller
US12296515B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12296515-B2 |
| Application number | US-202418767355-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 9, 2024 |
| Priority date | Aug 21, 2020 |
| Publication date | May 13, 2025 |
| Grant date | May 13, 2025 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A method produces an injection molded part. A plastic material is injected into a cavity for forming the injection molded part. The plastic material in a flow line region of the cavity, where the plastic material from two directions coincides during an injection molding process, is at least partially removed from the cavity via at least two overflow points and, in so doing, is locally swirled or mixed between the overflow points.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for producing an injection molded part, which comprises the steps of: injecting a plastic material into a cavity for forming the injection molded part, wherein the plastic material in a flow line region of the cavity, where the plastic material converges from two directions during an injection molding process, is at least partially removed from the cavity via at least two overflow points that are disposed tangentially and axially offset from one another and, during the injection molding process, is locally swirled or mixed between the at least two overflow points. 2. The method according to claim 1 , wherein the at least two overflow points are disposed offset from the flow line region along one of the two directions. 3. The method according to claim 1 , wherein the at least two overflow points open perpendicularly into the cavity. 4. The method according to claim 1 , wherein the injection molded part is a fan impeller for a radiator fan. 5. The method according to claim 4 , wherein the cavity producing the injection molded part as the fan impeller having a central hub cup with a plurality of radially oriented blades and an outer ring connecting the radially oriented blades to one another at blade tips. 6. The method according to claim 5 , wherein the flow line region is disposed at the outer ring. 7. The method according to claim 5 , wherein the flow line region at the outer ring is disposed between two adjacent ones of the radially oriented blades. 8. The method according to claim 5 , wherein the at least two overflow points are positioned radially on an inside of the outer ring.
Assignees
Inventors
Classifications
comprising a rotating shroud · CPC title
expelling moulding material outside the mould cavity at the weld line location · CPC title
Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers · CPC title
intermixing the injected material front at the weld line, e.g. by applying vibrations to the melt front (B29C2045/0031 takes precedence) · CPC title
and removing excess material from the mould cavity by the introduced fluid, e.g. to an overflow cavity · CPC title
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- What does patent US12296515B2 cover?
- A method produces an injection molded part. A plastic material is injected into a cavity for forming the injection molded part. The plastic material in a flow line region of the cavity, where the plastic material from two directions coincides during an injection molding process, is at least partially removed from the cavity via at least two overflow points and, in so doing, is locally swirled o…
- Who is the assignee on this patent?
- Brose Fahrzeugteile Se & Co Kg, Brose Fahrzeugteile Se & Co Kg Wuerzburg
- What technology area does this patent fall under?
- Primary CPC classification B29C45/0025. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue May 13 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).