Glass Pusher with Eccentric Motors for Precise Transfer Curves
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Solution Overview
Problem
Existing devices for transferring glass objects from a mold to a conveyor belt lack optimal design options for the transfer curve, resulting in high construction and maintenance efforts, as well as limited flexibility in positioning and speed matching with the conveyor belt.
Innovation Solution
A device with only one stationary electric motor and two eccentrically mounted motors on a pivotally mounted boom, utilizing a four-bar chain and spur gear for reduced parts and improved curve representation, allowing for more efficient and robust operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If three stationary electric motors with gear components are used to represent three partial movements, then the transfer curve can be precisely controlled, but the construction effort and device complexity increase significantly
Solution Approach 1:
The patent removes the stationary gear components and toothed belt drives from the system, extracting only the essential motor functions. The three electric motors are mounted directly on the boom without intermediate gear transmissions, eliminating maintenance-intensive gear elements while preserving the ability to generate and superimpose three independent partial movements for precise transfer curve control.
Solution Approach 2:
The patent segments the motor mounting system into three independently controllable electric motors mounted on the boom, each capable of generating a specific partial movement. This segmentation allows each motor to be controlled independently via the control unit, enabling precise superimposition of movements to achieve the desired transfer curve without complex mechanical gear combinations.
2Device complexity
If two electric motors are used to represent two partial movements, then the device complexity is reduced, but the design options for the transfer curve are limited
Solution Approach 1:
The patent makes the mounting structure dynamic by attaching the three electric motors to a boom that can pivot about a vertical axis. This dynamic mounting allows the motors to move through a workspace volume, enabling the generation of complex three-dimensional transfer curves that cannot be achieved with fixed motor positions, thereby increasing design versatility without adding mechanical gear components.
Solution Approach 2:
The patent utilizes independent electronic control of each motor's speed, position, and acceleration parameters to generate diverse transfer curves. The control unit can program different motion profiles and superimpose multiple partial movements with varying parameters, providing extensive design options for transfer curves without requiring additional mechanical degrees of freedom or complex gear mechanisms.
3Ease of manufacture
If maintenance-intensive toothed belt drives and gear components are used, then the transfer of rotary movements is achieved, but the maintenance effort and operational reliability decrease
Solution Approach 1:
The patent replaces the mechanical gear transmission system with direct motor mounting on the boom. The rotary movements from the three electric motors are transmitted directly to the slider assembly without intermediate toothed belt drives or gear components. This substitution eliminates wear-prone mechanical elements, reducing maintenance requirements and improving operational reliability while maintaining the ability to achieve precise motion control through electronic means.
Data Source
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AI summary
The invention relates to a device for pushing glass objects from a resting depositing plate to a conveyor belt moving at a uniform speed, characterized by a first electric motor (1) arranged in a stationary manner within a housing (49). The electric motor has a driving connection to a cantilever (4) that is rotatably supported about a vertical axis (8). An accommodating element (9) is located on the cantilever. The accommodating element carries a second electric motor (12), the output shaft of which extends vertically and is connected at the free end thereof to a crank arm (17) in a rotationally fixed manner. A pusher (18) is attached to the free end of the crank arm in an articulated manner in such a way that the pusher can be pivoted relative to the crank arm (17) about a vertical axis (19). By means of an annular element (26), which is rotatably supported about the axis (23) of said output shaft and which has a drive connection to a third electric motor that is likewise carried by the accommodating element (9), the pusher (18) can be pivoted relative to the crank arm about the axis (19) via an intermediately arranged push rod. After two of the three electric motors, which can be controlled independently of each other, are arranged on the cantilever (4), a significant reduction of transmission parts is achieved compared to three electric motors arranged in a stationary manner. The mechanism of a pivoting motion of the pusher (18) relative to the crank arm (17) by means of a push rod is robust, low-maintenance, and suitable in particular for the usage conditions in a glassworks.