Die-Pressing Mold Dust Collection Passage
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Solution Overview
Problem
Conventional die-pressing dies suffer from dust accumulation around the lower roller, leading to workpiece scratches and reduced roller life due to dust entry into the roller unit.
Innovation Solution
A die-pressing die with a die body featuring a discharge hole and collection passages that create a negative pressure state to suction and discharge dusts, preventing them from entering the lower free ball bearing and extending its lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional die-pressing die structure is used, then die-pressing operation can be performed, but dust accumulates around the lower roller causing workpiece scratches and reducing roller life
Solution Approach 1:
The patent extracts the harmful dust particles from the working area by introducing a discharge hole at the bottom of the die body and collection passages that extend along the peripheral edge of the die hole. This configuration allows dust to be discharged from the interior of the die body to the exterior, removing the harmful factor from the work environment.
Solution Approach 2:
The patent introduces air flow as an intermediary substance to carry dust particles away from the lower roller area. The collection passages are configured to allow air to flow through and carry dust particles from the die interior through the discharge hole, using the air as a mediator to remove the harmful dust accumulation.
2Duration of action of moving object
If conventional die-pressing die structure is used, then die-pressing operation can be performed, but dust enters the lower roller unit inhibiting rotation performance and shortening life
Solution Approach 1:
The patent extracts dust particles from the interior environment of the die body before they can enter the lower roller unit. The collection passages positioned along the peripheral edge of the die hole create a dust discharge pathway that removes particles from the working area, preventing them from reaching and damaging the roller unit.
Solution Approach 2:
The patent employs pneumatic principles by utilizing air flow through the collection passages and discharge hole to actively remove dust particles from the die interior. The air flow creates a pneumatic cleaning effect that prevents dust accumulation and entry into the roller unit, extending its operational life.
3Reliability
If dust discharge structure is added to prevent dust accumulation, then workpiece quality improves, but device complexity increases
Solution Approach 1:
The patent segments the die body structure by adding a discharge hole and collection passages as separate functional elements. The collection passages are positioned along the peripheral edge of the die hole, creating a segmented dust discharge system that is integrated into the overall die structure without completely redesigning the die body.
Solution Approach 2:
The discharge hole and collection passages serve multiple functions: they discharge dust particles from the die interior, prevent dust accumulation around the lower roller, and maintain a clean working environment for die-pressing operations. This multi-functional design adds minimal structural complexity while providing comprehensive dust management.
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
Effectively prevents workpiece scratches and prolongs the life of the roller unit by restricting dust accumulation and entry into the bearing, enhancing operational efficiency.
Implementation Method 1
the collection passage is configured to suction air due to a negative pressure state in the discharge hole
Data Source
Figure 1
Figure 2(a)~2(b)
Figure 3
AI summary
A die-pressing die used for die-pressing a workpiece includes a die body on whose upper face a die hole is formed and on whose bottom face a discharge hole for discharging dusts of the workpiece is formed, and a roller unit disposed within the die hole and having a roller protruding upward from the upper face of the die body. A collection passage for collecting the dusts is formed at a peripheral edge portion of the die hole. One end of the collection passage is opened at the upper face of the die body, and another end thereof is opened to the discharge hole. The collection passage is configured to suction air due to a negative pressure state in the discharge hole.