Hot-runner system including melt-flow control structure integrally formed with the manifold body

• US 8,535,049 B2
• Filed: 01/25/2012
• Issued: 09/17/2013
• Est. Priority Date: 12/09/2009
• Status: Expired due to Fees

• Current Assignee: Husky Injection Molding Systems Limited
• Original Assignee: Husky Injection Molding Systems Limited
• Inventors: MacLeod, Darrin Albert
• Primary Examiner(s): HEITBRINK, TIMOTHY W
• Application Number:
  US13/357,750
• Publication Number:
  US 20120156323A1
• Time in Patent Office: 601 Days
• Field of Search: 425/572, 264/328.8
• US Class Current: 425/572
• CPC Class Codes: B29C 45/2725 Manifolds
• CPC Class Codes: B29C 45/2727 Modular manifolds; Connections between spaced manifold elements
• CPC Class Codes: B29C 45/30 Flow control means disposed within the sprue channel, e.g. "torpedo" construction
• CPC Class Codes: B33Y 80/00 Products made by additive manufacturing
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

A hot-runner system is provided with a manifold body including a manifold melt channel, and a melt-flow control structure communicating with the manifold melt channel. The melt-flow control structure is integrally formed with the manifold body.

Claims

1. A hot-runner system, comprising:

a manifold body including a manifold melt channel; and

a melt-flow control structure communicating with the manifold melt channel,

wherein the melt-flow control structure is integrally formed with the manifold body.

2. The hot-runner system of claim 1, wherein:

the melt-flow control structure is configured to control, at least in part, a flow of melted resin through the manifold melt channel.

3. The hot-runner system of claim 2, further comprising:

a manifold assembly including the manifold body.

4. The hot-runner system of claim 3, wherein:

the manifold body includes;

a first manifold body portion;

a second manifold body portion being connectable with the first manifold body portion, the first manifold body portion and the second manifold body portion, together, defining the manifold melt channel when connected.

5. The hot-runner system of claim 4, wherein:

the melt-flow control structure is integrally formed with the first manifold body portion.

6. The hot-runner system of claim 4, wherein:

the melt-flow control structure is integrally formed with the second manifold body portion.

7. The hot-runner system of claim 4, wherein:

the melt-flow control structure is integrally formed with the first manifold body portion and the second manifold body portion.

8. The hot-runner system of claim 1, further comprising:

a functional insert located in the manifold body, the functional insert communicating with the manifold melt channel.

9. An injection-molding system including the hot-runner system of any one of claims 1 to 4.

10. The hot-runner system of claim 8, wherein the functional insert is integrally formed with the manifold body.

11. The hot-runner system of claim 8, wherein the functional insert comprises a mixer element.

12. The hot-runner system of claim 8, wherein the functional insert comprises a baffle element.

13. The hot-runner system of claim 1, wherein the melt-flow control structure is configured to improve a homogenous melt stream.

14. The hot-runner system of claim 1, wherein the melt-flow control structure is configured to improve a balancing of flow in the hot-runner system.

15. The hot-runner system of claim 1, wherein the melt-flow control structure is machined in multiple locations integrally with the manifold body.

16. The hot-runner system of claim 15, wherein the multiple locations of the melt-flow control structure have varying channel lengths and diameters.

17. The hot-runner system of claim 1, wherein the melt flow control structure is configured as a functional insert located in the manifold body, the functional insert communicating with the manifold melt channel.

18. The hot-runner system of claim 17, wherein the functional insert comprises a mixer element.

19. The hot-runner system of claim 17, wherein the functional insert comprises a baffle element.