Liquid Material Ejector Longitudinal Valve Drive Compact Arrangement
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Solution Overview
Problem
Existing liquid material ejectors face challenges in arranging multiple units side by side due to protruding valve driving sources, and they are limited in handling high viscosity materials, requiring a compact size that restricts their application to low viscosity liquids.
Innovation Solution
The valve driving source is rearranged in the longitudinal direction of the base block, allowing for a slim design where the plunger, valve, and driving sections are aligned, enabling efficient power transmission through gears and belts, and a rotary selector valve facilitates communication between channels, allowing for efficient ejection of materials of varying viscosities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the valve driving source is arranged in a position near the nozzle or on the backside of the valve, then the valve can be operated, but the apparatus size increases and multiple ejectors cannot be arranged side by side in a compact manner
Solution Approach 1:
The valve driving source is repositioned from a lateral arrangement (horizontal dimension) to a longitudinal arrangement along the plunger's advancing/retracting direction. This dimensional change allows the driving source to be integrated within the same longitudinal envelope as the plunger, eliminating lateral projections and enabling compact side-by-side arrangement of multiple ejectors.
2Area of stationary object
If the apparatus is designed to be compact, then the size is reduced, but it is limited to ejecting low viscosity liquids and cannot handle high viscosity materials
Solution Approach 1:
The system incorporates a rotary selector valve that can dynamically switch between different liquid material channels of varying viscosities. This dynamic configuration allows a single compact ejector to adapt to different material types (from low viscosity liquids to high consistency pastes and creams) by selecting the appropriate channel, thereby achieving versatility without increasing apparatus size.
3Ease of operation
If the valve driving source is arranged laterally with respect to the plunger, then the valve can be operated, but the interval between side-by-side ejectors is restricted
Solution Approach 1:
The valve driving source is merged with the plunger assembly in the longitudinal direction, sharing the same spatial envelope. This merging eliminates the need for separate lateral space for the driving source, allowing multiple ejectors to be positioned in close proximity side by side with minimal intervals between them.
Data Source
AI summary
The liquid material ejector has a liquid material supply port through which the liquid material is supplied, a nozzle for ejecting the liquid material, a valve block having a metering bore to be filled with the ejected liquid material and a liquid material supply channel communicating with the liquid material supply port, a selector valve having a first channel for allowing communication between the metering bore and the liquid material supply channel and a second channel for allowing communication between the metering bore and the nozzle, a plunger advancing and retracting in the metering bore, a plunger driving section for driving the plunger, a valve driving section for driving the selector valve, and a transmission section for transmitting driving power from the valve driving section to the selector valve. The plunger driving section, the valve driving section, and the valve block are arranged successively in the longitudinal direction.