Paste Supply Apparatus Ejecting Member Design

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Solution Overview

Problem

Existing paste supply apparatuses face challenges in stabilizing the inner lid of a paste pot, leading to paste residue on the container walls and increased waste due to deformation of elastic members, making it difficult to press down the lid evenly.

Innovation Solution

A paste supply apparatus with an ejecting member featuring an annular pad portion and a protruding portion that elastically deforms to firmly contact the inner lid, ensuring stable pressing and reduced paste residue, utilizing a pot holder and an ejecting member lifting unit to manage the lid's movement and paste ejection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If an elastic member is used to press down the inner lid, then the lid can be pressed down, but the elastic member is easily deformed and cannot press straight down in a stable posture

Engineering Contradiction:

Improvepressing down the inner lidVSAvoidstable posture of the elastic member

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The elastic member is divided into two functional segments: a pad portion for contacting the inner lid and a protruding portion for maintaining stable posture. This segmentation allows each part to perform its specific function optimally without interfering with the other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The pad portion has a specific local quality of elasticity to deform and contact the inner lid, while the protruding portion has a different local quality to maintain structural stability. This local differentiation resolves the contradiction between flexibility for pressing and stability for posture.

Inventive Principle:

Principle #3Local quality

2Productivity

If the ejecting member directly contacts the inner lid, then paste can be ejected, but paste remains on the inner side surface of the container

Engineering Contradiction:

Improvepaste ejectionVSAvoidwaste paste

Core Design Contradiction:

ProductivityVSLoss of substance

Solution Approach 1:

The pad portion acts as an intermediary between the ejecting member and the inner lid. It distributes the pressing force evenly across the lid surface, preventing paste from adhering to the container walls while still enabling effective paste ejection through the through hole.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of operation

If the ejecting member has a large diameter, then it can press down the inner lid, but it cannot fit within the container

Engineering Contradiction:

Improvepressing down the inner lidVSAvoiddiameter of the ejecting member

Core Design Contradiction:

Ease of operationVSLength of moving object

Solution Approach 1:

The protruding portion is nested within the pad portion, creating a compact structure that fits within the container while maintaining the necessary pressing function. The nested design allows the ejecting member to have an appropriate diameter that fits the container constraints.

Inventive Principle:

Principle #7Nested doll (Nesting)

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

The solution effectively suppresses paste residue on the container walls, reducing waste by ensuring the inner lid is pressed down in a stable posture, thereby minimizing paste loss during ejection.

Implementation Method 1

the pad portion of the elastic member is elastically deformed to extend outside and firmly contacts an upper surface of the inner lid

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Implementation Method 2

the annular protruding portion abuts on the upper surface of the inner lid within the internal space of the pad portion

Methodology Applied

Scientific EffectMechanical contact constraint: Mechanical Force

Implementation Method 3

the ejecting member presses down the inner lid of the paste pot held by the pot holder to eject the paste from the through hole

Methodology Applied

Scientific EffectPressure-driven ejection: Pressure Increase

Data Source

PatentUS9352548B2Paste supply apparatus and screen printing machine

Publication Date: 2016.05.31 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

AI summary

A paste supply apparatus includes: a pot holder which holds a paste pot including an inner lid movable in a container; an ejecting member; an elastic member provided at the ejecting member and including an annular pad portion including a taper having a diameter increasing toward downward; an annular protruding portion protruding downward from a lower surface of the ejecting member within an internal space surrounded by the pad portion; and an ejecting member lifting unit which moves the ejecting member to press down the inner lid to eject the paste. When the ejecting member presses down the inner lid, the pad portion of the elastic member is elastically deformed to extend outside and firmly contacts an upper surface of the inner lid, and the annular protruding portion abuts on the upper surface of the inner lid within the internal space.