Actuator Compensators for Molding Misalignment

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Solution Overview

Problem

Molding systems face challenges with relative misalignment between actuators and components, leading to the transmission of bending stress and strain, which can affect the precision and efficiency of the molding process.

Innovation Solution

Incorporating a linear actuator with first and second compensators to connect the actuator to both the payload and support structure, these compensators mitigate misalignment by allowing the actuator to move while preventing the transmission of bending stress and strain, ensuring accurate movement and reduced mechanical stress.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a linear actuator is used to move the payload, then the actuator can provide precise linear motion control, but misalignment between the actuator and payload/support structure transmits bending stress and strain that reduces reliability

Engineering Contradiction:
Improvepositioning precisionVSAvoidactuator reliability
Core Design Contradiction:
Measurement precisionVSReliability

Solution Approach 1:

A compensator mechanism is introduced as an intermediary element between the linear actuator and the payload/support structure. This compensator absorbs misalignment movements through its own degrees of freedom, preventing bending stresses from being transmitted to the actuator while maintaining the actuator's precise linear motion control capability

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The compensator mechanism is designed with dynamic characteristics that allow it to adapt to misalignment conditions during operation. The compensator can flexibly adjust its configuration to accommodate relative movements between the actuator and payload, converting static misalignment problems into dynamic compensation solutions

Inventive Principle:
Principle #15Dynamics

2Stability of the object's composition

If the actuator is rigidly connected to the payload and support structure, then structural stability is improved, but misalignment causes bending stress transmission that reduces manufacturing precision

Engineering Contradiction:
Improvestructural stabilityVSAvoidmolding precision
Core Design Contradiction:
Stability of the object's compositionVSManufacturing precision

Solution Approach 1:

The compensator serves as a mediator that decouples the rigid connection between actuator and payload. It allows the actuator to maintain its rigid structure for stability while the compensator absorbs misalignment effects, preventing distortion transmission to the molding system components

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If compensators are added to compensate for misalignment, then actuator reliability and precision are improved, but device complexity increases

Engineering Contradiction:
Improveactuator reliabilityVSAvoidactuator system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The actuator system is segmented into distinct functional modules: the linear actuator module, the compensator module, and the payload interface module. This segmentation allows each component to be optimized independently and facilitates easier maintenance and replacement, reducing the practical complexity despite adding functional capabilities

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS10040233B2Actuator for a molding system
Publication Date: 2018.08.07 HUSKY INJECTION MOLDING SYST LTD
  • US10040233B2 patent drawing
  • US10040233B2 patent drawing
  • US10040233B2 patent drawing

AI summary

An actuator (100) for a molding system (900) is disclosed. The actuator (100) includes a linear actuator (102). The linear actuator (102) is configured to move a payload (160) relative to a support structure (170). The linear actuator (102) is connectable to the support structure (170) and the payload (160). The actuator (100) also includes a first compensator (104). The first compensator (104) is configured to compensate for a relative misalignment between the linear actuator (102) and the payload (160). The actuator (100) further includes a second compensator (106). The second compensator (106) is configured to compensate for a relative misalignment between the linear actuator (102) and the support structure (170).