Molded Product Take-Out Head Vibration Suppression
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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.
Innovation Solution
The apparatus employs a positioning servo device and an active controller with a light and small electric actuator to jointly perform positioning control and active control, using the actuator to apply antiphase vibrations to suppress displacement vibrations, allowing for efficient vibration suppression in multiple directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If only positioning control by servomotor is used, then the control system remains simple, but displacement vibration of the attachment cannot be suppressed in a short time
Solution Approach 1:
The invention employs feedback control by detecting the displacement vibration of the attachment with a displacement vibration detector and using this information to control the electric actuator. The active controller receives the detection signal and generates a control signal to drive the electric actuator, creating a closed-loop feedback system that actively suppresses vibration.
Solution Approach 2:
The invention utilizes mechanical vibration by causing the electric actuator to vibrate the attachment in antiphase to the detected displacement vibration. The actuator generates counter-vibration that cancels out the harmful displacement vibration, achieving active vibration suppression through controlled mechanical oscillation.
2Reliability
If a large-scaled electric actuator is used to absorb all displacement vibrations, then vibration suppression performance improves, but the actuator becomes too heavy and large to mount on the take-out head
Solution Approach 1:
The invention applies partial action by using a small-scaled electric actuator that does not attempt to counteract all vibrations independently. Instead, it works in conjunction with the positioning servo device, which handles the primary vibration suppression. The electric actuator provides supplementary anti-phase vibration to finish suppressing residual displacement vibration, dividing the workload between two systems.
Solution Approach 2:
The invention merges the positioning control function of the servomotor with the vibration suppression function of the electric actuator. Both systems work together in coordination, with the positioning servo device performing primary control and the electric actuator providing additional anti-phase vibration, combining their effects to achieve superior vibration suppression with a lightweight actuator.
3Loss of time
If vibration suppression control is added to positioning control, then displacement vibration suppression improves, but it becomes difficult to set conditions for vibration suppression control
Solution Approach 1:
The invention implements self-service through automatic detection and control. The displacement vibration detector automatically identifies the vibration characteristics of the attachment, and the active controller automatically generates appropriate control signals without requiring manual condition setting. The system adapts to different operating conditions autonomously, eliminating the complexity of manual parameter adjustment.
Solution Approach 2:
The invention replaces complex mechanical vibration suppression mechanisms with an electric control system. Instead of using mechanical dampers or complex linkage mechanisms that would require careful adjustment, the system uses an electric actuator controlled by electronic signals, which can be automatically adjusted through software control without mechanical intervention.
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, utilizing a smaller and lighter electric actuator, and can be applied during various control functions such as positioning, vibration suppression, and jerk control, effectively reducing vibration time.
Implementation Method 1
causing the electric actuator to apply to the attachment a vibration having an antiphase to the displacement vibration
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 performs active control in conjunction with the positioning, control by the servomotor. At the beginning of the active control, the positioning control is primarily performed by the servomotor, and then the active control is positively performed by the active controller using an electric actuator. Compared with when only the active control is performed for vibration suppression, a lighter and smaller electric actuator can be employed.