Stamp Unit Leaf Spring Separation Against Ink Penetration
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Solution Overview
Problem
Existing stamp units are prone to ink penetration into the impression member due to unexpected external forces, leading to defects during thermal carving, as the impression and ink occluding members can inadvertently come into contact.
Innovation Solution
Incorporating an elastic repulsive member, such as an arc-shaped leaf spring, to constantly separate the impression and ink occluding members, ensuring they remain apart even under external forces, and allowing them to come into contact only when compressed, preventing ink penetration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the impression member and ink occluding member are held at positions where they do not come into contact, then thermal carving controllability is improved, but the device complexity increases due to additional mechanisms required to maintain separation
Solution Approach 1:
The elastic member automatically maintains separation between the impression member and ink occluding member through its inherent elastic force, without requiring external control mechanisms. The system self-regulates to prevent ink penetration while allowing contact when needed for ink supply.
Solution Approach 2:
The elastic member is pre-configured to exert a separating force between the impression member and ink occluding member before any ink penetration issue occurs. This preliminary anti-action prevents the harmful effect of unintended ink penetration while allowing the system to function normally.
2Ease of manufacture
If the frame is made loose to allow movement, then ease of assembly is improved, but reliability deteriorates due to risk of unexpected external forces causing contact between members
Solution Approach 1:
The frame is designed with dynamic characteristics that allow it to move in response to external forces while the elastic member continuously adjusts to maintain separation. This dynamic design accommodates assembly variations and external forces without compromising the separation reliability.
Solution Approach 2:
The elastic member acts as a cushioning element that absorbs unexpected external forces before they can cause the impression member and ink occluding member to come into contact. This beforehand cushioning protects the system from reliability issues caused by external forces.
3Reliability
If the elastic member is pre-compressed to ensure separation, then reliability of separation is improved, but the force required to bring members into contact increases
Solution Approach 1:
The elastic coefficient and pre-compression amount of the elastic member are optimized to achieve the right balance between maintaining separation reliability and requiring reasonable force for operation. By adjusting these parameters, the system achieves reliable separation while keeping the operating force within acceptable limits.
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 solution effectively prevents ink penetration into the impression member, ensuring thermal carving controllability and accuracy by maintaining the separation of the impression and ink occluding members, thus eliminating defects during the carving process.
Implementation Method 1
an elastic member that separates the impression member from the ink occluding member
Data Source
Figure 1A~1B
Figure 2
Figure 3A~3B
AI summary
[Object] To provide a stamp capable of preventing penetration of an ink into an impression member from starting even when an unexpected external force is applied to a frame or a case. [Solving Means] A stamp unit (10) comprises a case (16) that accommodates an ink occluding member (15) and a frame (13) on which an impression member (12) formed of a porous film is tightly stretched, and a leaf spring (20) is provided between the case (16) and the frame (13). By an elastic repulsive force of the leaf spring (20), the impression member (12) and the ink occluding member (15) are constantly separated from each other, and the ink is not allowed to penetrate the impression member (12) during distribution. In this way, even when an unexpected external force is applied to an unprocessed stamp unit (10), the impression member (12) and the ink occluding member (15) do not come into contact with each other, and penetration of ink into the impression member (12) is prevented from starting.