Take-out Head Vibration Suppression via Active Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing apparatuses for taking out molded products face challenges in suppressing displacement vibrations of the take-out head, with prior solutions either requiring long times to suppress vibrations or necessitating large, heavy electric actuators that are impractical for mounting, and lacking versatility in dynamic vibration absorption.
Innovation Solution
An apparatus using a positioning servo device with an active controller that applies antiphase vibrations using a small-scaled electric actuator, starting active control only after the displacement vibration amplitude is attenuated to a predetermined setting, allowing effective vibration suppression in multiple axial directions without the need for large actuators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large-scaled electric actuator is used to suppress all displacement vibrations, then vibration suppression effectiveness is improved, but device size and weight increase making it impractical to mount on the take-out head
Solution Approach 1:
The positioning servo device performs preliminary positioning control to reduce the attachment to a predetermined position first. Then the active controller activates the electric actuator only when the amplitude of displacement vibration is attenuated to a predetermined setting, enabling a small-scaled actuator to effectively suppress remaining vibrations
Solution Approach 2:
Instead of using a large actuator to suppress all vibrations from the beginning, the invention uses a small electric actuator to suppress only the residual vibrations after the servo device has already performed preliminary positioning, achieving effective vibration suppression with minimal actuator size
2Weight of moving object
If active control is performed earlier with a small electric actuator, then device size is reduced, but vibration suppression time increases and positioning control is hindered
Solution Approach 1:
The positioning servo device performs preliminary positioning control before the active controller activates the electric actuator. This preliminary action reduces the attachment to a predetermined position, ensuring that when active control begins, the system is already near the target position, thus minimizing additional time loss
Solution Approach 2:
The active controller detects the amplitude of displacement vibration and activates the electric actuator only when the amplitude is attenuated to a predetermined setting. This feedback-based timing ensures optimal moment for active control activation, preventing unnecessary delays while maintaining effectiveness
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 approach enables rapid suppression of displacement vibrations using a lightweight and compact electric actuator, effectively integrating with positioning and vibration suppression controls to shorten vibration suppression time and enhance practicality.
Implementation Method 1
causing the electric actuator to apply to the attachment a vibration having an antiphase to the displacement vibration
Implementation Method 2
a displacement vibration detector operable to detect a displacement vibration of the attachment
Data Source
AI summary
An apparatus for taking out a molded product that is capable of suppressing displacement vibration of an attachment in a shorter time than ever without using a large-scaled electric actuator. An active controller starts active control after the amplitude of displacement vibration of the take-out head as an attachment has been attenuated to a predetermined setting by means of positioning control by a servomotor or when the amplitude can be considered as having been attenuated to the predetermined setting. The positioning control is first performed by the servomotor, and then the active control is performed by the active controller using an electric actuator which is light in weight and small in size.