Forming Die Assembly for Microcomponents with Integrated Storage
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Solution Overview
Problem
The existing methods for producing microcomponents with metal powder and binder are inefficient due to the difficulty in accurately filling and compacting the small amount of raw material required, which increases process steps and reduces efficiency.
Innovation Solution
A forming die assembly with a storage portion for the raw material, a plunger to fill the material into a cavity, and a punch to compact it, allowing for continuous production of green compacts without the need to pull out the punch, and optionally incorporating a heating means to improve flowability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the raw material is filled in the die at each compacting as in an ordinary die forming, then the green compact can be formed, but the production efficiency is extremely low because the amount of raw material required for one compacting is extremely small
Solution Approach 1:
The raw material is pre-stored in the storage portion of the forming die before the compacting process. The plunger is positioned to deliver the pre-measured amount of raw material directly into the cavity, eliminating the need to fill material during each compacting cycle. This preliminary preparation enables efficient continuous production.
Solution Approach 2:
The forming die assembly is designed with an integrated storage portion and plunger mechanism that automatically supplies the required amount of raw material to the cavity during each cycle. The system serves itself by using the storage portion to replenish material without external intervention, enabling autonomous continuous operation.
2Manufacturing precision
If a predetermined amount of raw material is directly filled in the die, then the green compact with high accuracy is obtained, but the process steps increase and the raw material is difficult to use
Solution Approach 1:
The storage portion, plunger, and cavity are integrated into a single forming die assembly. The plunger combines the functions of material delivery and gate closing, while the storage portion serves as both reservoir and positioning mechanism. This merging reduces process steps while maintaining precision.
Solution Approach 2:
The plunger serves multiple functions: it delivers the raw material from the storage portion, closes the gate during compacting, and positions the material accurately in the cavity. The storage portion also serves as a positioning mechanism and material reservoir. This multi-functionality reduces the number of separate components and steps required.
3Productivity
If the punch is pulled out after compacting, then the green compact can be removed, but the production process becomes less efficient due to the additional step
Solution Approach 1:
The punch function is extracted from the material delivery mechanism. The plunger is designed to deliver material and close the gate without requiring subsequent withdrawal. The punch remains stationary or moves only for compacting, eliminating the time-consuming removal step while maintaining production efficiency.
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
Enables efficient and accurate supply of the raw material for forming microcomponents, allowing for continuous production of green compacts with improved flowability and reduced process complexity.
Implementation Method 1
the forming die is preferably provided with a heating means for heating the raw material in the storage portion
Implementation Method 2
the punch closes the gate and compresses the raw material in the cavity into a green compact by sliding in the direction of the cavity
Data Source
AI summary
A forming die assembly for microcomponents includes a forming die, a plunger, and a punch. The forming die is formed with a cavity, a storage portion for storing a raw material with a metal powder and a binder having plasticity, and a punch hole that connects the cavity and the storage portion so as to form a gate therebetween. The plunger is formed so as to be slidably inserted into the storage portion and to fill the raw material stored in the storage portion into the cavity through the punch hole. The punch is slidably inserted into the plunger in the sliding direction of the plunger and opens and closes the gate by reciprocatory sliding. The punch closes the gate and compresses the raw material in the cavity into a green compact by sliding in the direction of the cavity.