Sealing Device with Midway Stopping Mechanism
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Solution Overview
Problem
Existing sealing devices require multiple air supply systems and solenoid valves, and linear solenoids with fixed stroke lengths cannot perform two-step holding operations, limiting their functionality and efficiency.
Innovation Solution
A sealing device incorporating a pressure member, heating member, nozzle part, nozzle drive unit, and a linear solenoid with a stopping mechanism that allows the movable part to stop at a midway point, enabling two-step holding operations using a single linear solenoid, reducing the need for additional devices and simplifying control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an air cylinder is used for driving the pressure member, then the pressure member can be driven, but two air supply systems and solenoid valves are required, increasing device complexity
Solution Approach 1:
The patent combines the driving function of the pressure member with a linear solenoid, merging the previously separate air cylinder system and solenoid valve system into a single integrated electromagnetic actuation system. This reduces the number of components while maintaining the required driving capability.
Solution Approach 2:
The patent replaces the pneumatic system (air cylinder and solenoid valves) with an electromagnetic system (linear solenoid). This substitution eliminates the need for compressed air supply systems and multiple solenoid valves, simplifying the overall device structure.
2Device complexity
If a linear solenoid is used for driving the pressure member, then device complexity is reduced, but the movable iron core cannot stop midway, limiting functionality
Solution Approach 1:
The patent segments the linear solenoid's movement into two distinct phases: a first stroke to the first holding position and a second stroke to the second holding position. This segmentation is achieved through a stopping mechanism that divides the continuous movement into controlled stages, enabling the two-step holding operation.
Solution Approach 2:
The patent introduces a stopping mechanism that dynamically controls the movement of the linear solenoid's movable iron core. The stopping mechanism allows the core to pause at intermediate positions during its stroke, transforming the solenoid from a simple on/off actuator into a multi-position control device capable of two-step holding operations.
3Device complexity
If a linear solenoid without stopping mechanism is used, then the structure is simple, but it cannot perform two-step holding operation, reducing functionality
Solution Approach 1:
The patent introduces a stopping mechanism as an intermediary component between the linear solenoid and the pressure member. This intermediary device enables the solenoid to achieve multi-position control without fundamentally changing the solenoid's basic structure, adding functionality while maintaining structural simplicity.
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
Enables efficient two-step holding operations with reduced power consumption and fewer associated devices, enhancing the sealing device's functionality and cost-effectiveness.
Implementation Method 1
a linear solenoid for driving the pressure member such as to hold the seal portion between the pressure member and the heating member
Implementation Method 2
a heating member having a heating element for heating the seal portion
Data Source
AI summary
A sealing device is provided which is capable of a two-step holding operation with the use of a linear solenoid. The sealing device includes a stopping mechanism for stopping a movement of a movable part that forms the linear solenoid when the linear solenoid is driven at a predetermined midway point between a start point and an end point after the nozzle part has been moved from the waiting position to the stop position, and for releasing the movable part from a stop to allow the movable part to move again and reach the end point after the nozzle part has been returned from the stop position to the waiting position.