Sensorized Straight Lock Design for Mold Misalignment Detection
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Solution Overview
Problem
Existing molding structures face challenges in accurately detecting small misalignments between moveable and stationary mold components, which can lead to suboptimal quality of molded articles due to vibrations and rapid translations during the molding process.
Innovation Solution
A misalignment sensing system is introduced, featuring a male and female alignment member with integrated sensors, such as strain gauges or Piezo film sensors, that detect deformation caused by misalignment, and a control unit processes these measurements to determine the magnitude and direction of misalignment, optionally alerting operators through alarms or human-machine interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional alignment members (leader pins, straight locks) are used without sensors, then the mold structure remains simple, but misalignment cannot be detected and corrected
Solution Approach 1:
The patent combines the alignment member (straight lock) with a sensor into an integrated assembly. The sensor is mounted directly on the alignment member, allowing it to detect misalignment as the member deforms during mold closing. This merging eliminates the need for separate detection systems while providing real-time alignment data.
Solution Approach 2:
The alignment member itself serves as an intermediary element that both enforces alignment mechanically and transmits misalignment information to the sensor. The deformation of the alignment member under load acts as a mechanical signal that the sensor converts into measurable data, bridging the gap between mechanical alignment and electronic detection.
2Measurement precision
If separate alignment measurement systems are implemented, then misalignment can be detected, but the system complexity and cost increase
Solution Approach 1:
The patent merges the alignment enforcement function and the measurement function into a single integrated component. The straight lock alignment member has a sensor mounted on it, allowing it to simultaneously perform its mechanical alignment function and provide real-time alignment data, eliminating the need for separate measurement systems.
Solution Approach 2:
The alignment member is given dual functionality: it serves both as a mechanical alignment element that guides mold closing and as a measurement platform that detects misalignment through sensor integration. This multi-functionality reduces the overall system complexity by eliminating redundant components.
3Stability of the object's composition
If the moveable mold part is made heavy for structural integrity, then stability is improved, but alignment maintenance becomes more difficult due to vibrations and rapid translation
Solution Approach 1:
The sensor integrated on the alignment member provides real-time feedback about misalignment conditions during mold closing. This feedback allows for detection and correction of alignment issues before they affect molding quality, enabling maintenance of alignment consistency even with heavy moveable mold parts that experience vibrations and rapid motion.
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
This system allows for real-time detection and correction of misalignments, reducing the complexity of separate alignment measurement processes and ensuring consistent quality of molded articles by providing precise alignment data during the molding cycle.
Implementation Method 1
At least one sensor connected to one of the male portion and the female portion, the at least one sensor being configured to detect a deformation of any one of the male portion and the female portion, the deformation being induced by a misalignment
Data Source
AI summary
A misalignment sensing system for a molding structure and a method for using same. The molding structure includes a first component and a second component, at least one of the components being selectively repositionable between a closed configuration of the mold structure and an open configuration of the mold structure. The misalignment sensing system includes an alignment member including a male portion coupled to and extending from the first component of the molding structure, and a female portion defined in the second component of the molding structure, the female portion being configured to receive the male portion when the molding structure is in a closed configuration; and at least one sensor connected to one of the male and female portions and being configured to detect a deformation of any one of the male portion and the female portion, the deformation being induced by a misalignment of the molding structure.