Material Dispenser Plunger with Biasing Member for Complete Ejection
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Solution Overview
Problem
Conventional material dispensing tools face challenges in efficiently expelling all material from cartridges or sausage packs due to varying configurations and specifications, leading to material being left in the barrel or tube after the dispensing cycle is complete, which wastes time and productivity and exposes operators to sticky or viscous materials during removal.
Innovation Solution
A material dispenser controller assembly that includes a plunger with a biasing member and a control assembly allowing for manual movement of the plunger after electrical shutoff, enabling complete expulsion of material without harming the switch and facilitating clean ejection of spent casings, with adjustable travel limits to accommodate different cartridge and sausage pack configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the plunger is allowed to travel freely after electrical shutoff, then complete material expulsion is achieved, but the switch may be damaged
Solution Approach 1:
The biasing member is pre-configured to engage the plunger before manual movement occurs, establishing a protective mechanism that activates automatically when the plunger exceeds the safe travel distance and potentially damages the switch
Solution Approach 2:
The biasing member acts as a cushioning element positioned between the plunger and switch, absorbing excess travel distance and preventing direct contact between the plunger and switch, thereby protecting the switch from damage while allowing complete material expulsion
2Reliability
If the plunger travel is limited to protect the switch, then switch durability is maintained, but material remains in the barrel
Solution Approach 1:
The system transitions from a static travel limit to a dynamic solution where the plunger can exceed the normal travel distance during manual operation, with the biasing member dynamically engaging to provide protection only when necessary, allowing complete material expulsion while maintaining switch safety
Solution Approach 2:
The biasing member serves as an intermediary element between the plunger and switch, allowing the plunger to travel beyond the switch protection zone during manual operation while automatically engaging to prevent switch damage, thus enabling complete material expulsion without compromising switch durability
3Device complexity
If manual movement of the plunger is restricted, then switch protection is simplified, but operator exposure to sticky materials increases
Solution Approach 1:
The biasing member provides automatic self-protection functionality, engaging the plunger only when manual movement exceeds the safe zone, eliminating the need for complex control systems or operator intervention to prevent switch damage while enabling complete material expulsion and clean ejection
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
Ensures complete material expulsion, reduces operator exposure to sticky materials, and enhances productivity by allowing for manual ejection of spent casings without tools, addressing the inefficiencies and safety issues of existing systems.
Implementation Method 1
A biasing member located within the bore, the biasing member engaging the first end of the plunger, the biasing member allowing for the manual movement of the plunger after electrical shutoff without harm to the switch
Data Source
AI summary
A control assembly for a material dispenser includes a plunger movably located within a bore of the assembly, the plunger having first and second ends, the first end having an abutment for moveably retaining the plunger within the bore and the second end for engaging a switch during operation of the material dispenser to cease operation. A biasing member located within the bore, the biasing member engaging the first end of the plunger, the biasing member allowing for the manual movement of the plunger without harm to the switch of the material dispenser during use.