Servo Synchronized Toggle Lever Lifting Mechanism
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Solution Overview
Problem
Existing lifting mechanisms for packaging machines are complex to synchronize and difficult to clean due to multiple lever mechanisms, which complicates maintenance and operation.
Innovation Solution
A lifting device with parallel drive shafts equipped with servomotors and toggle lever systems, where the servomotors are synchronized using mechanical or electrical means, reducing tilting and lateral forces, and featuring a referencing position for precise operation and easy cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple lever mechanisms are used for lifting, then the lifting function is achieved, but the device becomes complex and difficult to clean
Solution Approach 1:
The lifting device is divided into two independent but synchronized drive shafts, each with its own servomotor and toggle lever system. This segmentation allows each side to be simpler and easier to clean, while the overall lifting function is maintained through coordinated operation of both sides.
Solution Approach 2:
The patent replaces complex mechanical synchronization mechanisms (such as gear connections or belt drives between multiple levers) with independent servomotors that are electronically synchronized. This substitution eliminates the need for complex mechanical linkages, reducing the number of parts and making the device easier to clean.
2Device complexity
If complex lever mechanisms are used, then lifting motion is achieved, but synchronization becomes difficult
Solution Approach 1:
The patent replaces mechanical synchronization mechanisms with electronic synchronization through servomotors. The servomotors receive synchronized control signals and independently adjust their rotation to maintain precise synchronization, eliminating the complexity of mechanical gear connections or belt drives while achieving high reliability.
Solution Approach 2:
The servomotors incorporate feedback mechanisms that continuously monitor their rotation position and adjust accordingly to maintain synchronization. This feedback control ensures that even if one side experiences slight variations in load or friction, the system automatically corrects to maintain synchronized operation.
3Stability of the object's composition
If drive shafts rotate in opposite directions, then tilting and lateral forces are reduced, but mechanical coupling complexity increases
Solution Approach 1:
The patent replaces mechanical coupling between drive shafts with electronic synchronization of independent servomotors. Each servomotor independently controls its drive shaft to rotate in the opposite direction, eliminating the need for mechanical gear connections or belt drives while maintaining the stability benefits of counter-rotation.
Data Source
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AI summary
The invention relates to a lifting device (1) for a workstation of a packaging machine comprising two drive shafts (3) arranged parallel to each other, on each of which at least two toggle levers (4) are arranged to move a tool lower part (9) vertically. The drive shafts (3) each have a servo motor (10) as a drive and the servo motors (10) are synchronized to each other.