Triaxial Labelling Machine Single Belt Drive
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Solution Overview
Problem
Traditional triaxial labelling machines require heavy carriages that move back and forth along the Y-axis, resulting in high inertia, increased movement time, and reduced productivity due to the need for multiple motors and complex cable management.
Innovation Solution
A labelling machine design where the movement of the applicator along the X-axis and the carriage along the Y-axis is achieved using a single toothed belt extending along both longitudinal guides and the transversal guide of the applicator, with two motors fixed on the frame acting on the carriage via four deflection rollers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a heavy carriage with multiple motors is used to move the applicator along the Y-axis, then the applicator can be positioned accurately, but the movement time increases and productivity decreases
Solution Approach 1:
The patent extracts the X-axis motor from the carriage and relocates it to the fixed frame. This removes the motor's mass from the moving carriage, reducing its inertia and allowing faster acceleration and deceleration during Y-axis movement, thereby increasing productivity while maintaining positioning accuracy through the belt-driven mechanism
Solution Approach 2:
The patent segments the drive system into two independent parts: a fixed motor on the frame that drives the belt for both X and Y movements, and a separate carriage that only carries the applicator and Z-axis motor. This segmentation allows the carriage to be lighter and faster while the fixed motor handles the complex positioning tasks
2Adaptability or versatility
If multiple motors and cables are installed on the carriage, then all movements can be controlled, but the system complexity and inertia increase
Solution Approach 1:
The patent makes the single belt system universal by having it serve multiple functions: it drives both the X-axis applicator movement and the Y-axis carriage movement simultaneously. This multi-functional belt eliminates the need for separate cable systems for each axis, reducing complexity while maintaining full movement control capability
Solution Approach 2:
The patent merges the X-axis and Y-axis drive functions into a single belt system that is looped through deflection rollers on the carriage. This combining of functions reduces the number of separate motors and cables from three to two, simplifying the overall system while preserving adaptability for all required movements
3Weight of moving object
If a single belt system is used for both X and Y movements, then the carriage mass is reduced, but the belt system becomes more complex
Solution Approach 1:
The patent introduces deflection rollers as intermediary elements that allow the single belt to change direction and serve multiple functions. These rollers act as mediators that enable the belt to loop around and drive both X and Y movements without requiring separate belt systems, thus reducing carriage mass while managing the belt system complexity through standardized roller components
Data Source
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AI summary
A triaxial labelling machine comprises two longitudinal lateral guides (1, 1') on which runs a transversal carriage (2) carrying an applicator (3) movable along a transversal guide (4) and provided with an actuator for the vertical displacement of a pad (6), a pair of motors (7, 7') fixed to the frame drive via speed reducers (8, 8') a single toothed belt (9) which extends in a loop with a substantially H-shaped plan, winding itself around two toothed pulleys (10, 10'), longitudinally aligned with the speed reducers (8, 8'), and two pairs of deflection rollers (11, 11') longitudinally spaced, arranged in correspondence with the end portions of the transversal carriage (2), the applicator (3) being fixed to the toothed belt (9) between the pairs of deflection rollers (11, 11'). In this way, by the simultaneous rotation of the two motors (7, 7') in clockwise/counter- clockwise direction or by keeping one of the two motors static, it is possible to obtain all the displacements of the carriage (2) and the applicator (3), both the single displacements along the two transversal and longitudinal directions and the combined simultaneous displacements along both directions.