Tool Insert Cooling Cavities for Hot Nozzle Thermal Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current tool inserts for the initial cut of hot-passage nozzles in injection molding machines experience rapid wear due to high mechanical and thermal stresses, and existing cooling methods are inefficient, leading to suboptimal thermal separation and cooling performance.
Innovation Solution
A tool insert with an anterior cylindrical part and a receiving head featuring multiple cavities between the outer wall and the tool recess, with one cavity connected to the coolant supply and another to the discharge passage, allowing for enhanced coolant flow and improved cooling through increased surface contact areas and strategically positioned flow connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the tool insert uses a conventional cooling design with limited coolant contact, then the structure is simple, but the cooling intensity is insufficient and thermal separation is suboptimal
Solution Approach 1:
The cooling system is segmented into multiple cavities (first cavity, second cavity, third cavity) that are distributed around the tool insert. Each cavity provides additional coolant contact surface area, transforming a single cooling path into multiple parallel cooling paths, thereby intensifying the cooling effect without requiring a completely new cooling architecture
Solution Approach 2:
The cooling design transitions from a conventional single-dimension coolant flow to a multi-dimensional cooling system. The cavities are arranged in different spatial positions (first, second, and third cavities) around the tool insert, creating a three-dimensional cooling network that increases coolant contact surface area and improves thermal separation from multiple directions simultaneously
2Area of stationary object
If the tool insert has limited coolant contact surface area, then the structure is simpler, but the cooling performance and thermal separation are insufficient
Solution Approach 1:
The coolant contact surface is segmented into multiple discrete cavities rather than using a single large cooling chamber. The first cavity communicates with the coolant supply passage, the second cavity communicates with the discharge passage, and the third cavity connects both, creating multiple segmented cooling zones that collectively provide extensive coolant contact area
Solution Approach 2:
The cavities are nested within the tool insert structure itself. The first, second, and third cavities are formed inside the tool insert body, with the coolant flowing through these nested cavities. This nesting approach maximizes the coolant contact surface area within the constrained space of the tool insert without significantly increasing its external dimensions
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design achieves more intensive cooling and reduces wear by ensuring a larger surface area for coolant flow, resulting in improved thermal separation and reduced mechanical stress on the tool insert.
Implementation Method 1
The tool insert may be cooled by means of a coolant, for example water... through the cavities or chambers created between the receiving head of the tool insert and the recess in the tool, spaces are formed with large adjoining surfaces of the receiving head, at which the coolant flows past. In this manner, a more intensive cooling is achieved
Data Source
AI summary
Tool insert for the initial cut of a hot-passage nozzle for an injection molding machine, which tool insert (10) accommodates the anterior (tool side) part of a nozzle and is insertable in turn in a suitably dimensioned recess (21) of the tool (20), which tool insert (10) consists of an anterior cylindrical fitted part (11) having a flow passage (11a) and a receiving head (12) for the tip of the nozzle. At least two cavities (chambers) (23) separated from each other are present between the outer wall (12a) of the receiving head (12) of the tool insert (10) and the wall of the recess (21) in the tool (20), one of which cavities (23) communicates with the supply passage (31) for a coolant, present in the tool, and the other cavity communicates with the discharge passage (32) for the coolant, present in the tool. Also, at least one flow connection is provided between the two cavities (23), preferably located as far as possible from the openings of the coolant passages (31, 32) in the tool.