Valve Seat Alignment Mechanism for Stable Liquid Material Discharge
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Solution Overview
Problem
Existing liquid material discharge devices face issues with continuous operation disrupting the relative alignment of the valve element with respect to the valve seat, particularly when using piezoelectric elements, leading to loosening of screws and reduced stroke range due to vibrations.
Innovation Solution
A liquid material discharge device with a mechanical adjustment mechanism that includes a movable member, an inclination adjuster, and an elastic portion to adjust the relative alignment of the valve element with respect to the valve seat, using a protruded portion, contact member, and fixed angle adjustment mechanism to stabilize the alignment without electrical means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a common discharge device is used for both high-viscosity and low-viscosity liquid materials, then device simplicity is maintained, but discharge quality and control precision deteriorate
Solution Approach 1:
The discharge device is segmented into two distinct discharge units: a first discharge unit with a large discharge hole for high-viscosity liquid materials, and a second discharge unit with a small discharge hole for low-viscosity liquid materials. This segmentation allows each unit to be optimized for its specific material type, ensuring high discharge quality for both viscosity ranges without compromising device simplicity.
2Manufacturing precision
If discharge holes of different sizes are used for different liquid materials, then discharge quality is improved, but device complexity increases
Solution Approach 1:
Two discharge units with different hole sizes are merged into a single integrated discharge device body. The first discharge unit with the large discharge hole and the second discharge unit with the small discharge hole are combined in one device, allowing the system to handle both high-viscosity and low-viscosity liquid materials effectively without requiring multiple separate devices.
Solution Approach 2:
The device incorporates a movable discharge unit that can be selectively moved to different positions. When discharging high-viscosity liquid material, the first discharge unit is positioned; when discharging low-viscosity liquid material, the second discharge unit is positioned. This dynamic switching mechanism allows the device to adapt to different material requirements while maintaining a relatively simple overall structure.
3Productivity
If liquid material is stored in a container before discharge, then continuous supply is achieved, but bacterial contamination risk increases
Solution Approach 1:
The liquid material is extracted from the storage container and discharged directly without being stored in an intermediate container. The discharge device is positioned to receive liquid material directly from the packaging container and discharge it immediately, eliminating the intermediate storage step that would otherwise create bacterial contamination risks while maintaining continuous supply capability.
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 mechanical adjustment mechanism stabilizes the alignment of the valve element and valve seat, mitigating vibration-induced misalignment and allowing for precise control of the stroke amount, enhancing the device's operational stability and efficiency.
Implementation Method 1
an elastic portion that couples the movable member to the base member
Implementation Method 2
when a piezoelectric element is used as the actuator that moves the valve element mounted on the valve stem forward and backward
Data Source
Figure 1
Figure 2
Figure 3(A)~3(B)
AI summary
Problem: To provide a liquid material discharge device capable of adjusting relative alignment of a valve element with respect to a valve seat by mechanical means. Solution: A liquid material discharge device includes: a base member; a valve device mounted on the base member and including a valve element and a valve seat; and a valve driving device configured to move the valve element forward to and backward from the valve seat. The liquid material discharge device further includes an adjustment device 140 configured to adjust relative alignment of the valve element with respect to the valve seat, wherein the adjustment device includes a movable member 141 on which the valve driving device is disposed, and an inclination adjuster 146 configured to adjust an inclination of the movable member. A liquid material application device includes the liquid material discharge device.