Belt-Driven Transfer Apparatus Reducing Inertial Force
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Solution Overview
Problem
Conventional transfer apparatuses face challenges in increasing the travel distance of a hand holding a thin plate without increasing the weight and inertial force of the linear movement mechanism, which is necessary due to larger and heavier liquid crystal display panels.
Innovation Solution
A transfer apparatus with a belt-type driving mechanism and a bevel gear mechanism that allows the hand to move along a horizontal straight path, where the output belt is wound around pulleys within a vertical plane, and the bevel gear mechanism efficiently transmits driving force adjacent to the rotation axis, preventing an increase in inertial force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the length of the arm of the link arm mechanism is increased to increase the travel of the hand, then the travel distance is improved, but the position of the link arm mechanism deviates from the rotation axis and the inertial force increases
Solution Approach 1:
The patent replaces the conventional link arm mechanism with a belt-driven linear movement mechanism. The hand is moved linearly along a guide rail by a belt driven by a motor, eliminating the need for long arms that cause inertial force issues. This substitution maintains the ability to achieve required travel distance without increasing inertial force on the rotary base.
2Strength
If the rigidity of the link arm mechanism is increased to support a work having a large weight, then the load-bearing capacity is improved, but the weight of the link arm mechanism increases
Solution Approach 1:
The patent substitutes the rigid link arm mechanism with a belt-driven system consisting of a motor, transmission shaft, and belt. This new mechanism achieves the required load-bearing capacity through the motor's driving force transmitted via the belt, without requiring a heavy rigid structure. The guide rail provides support while keeping the moving mechanism lightweight.
3Power
If a driving source with a large output is employed to rotate the rotary base, then the rotation capability is improved, but the space and power requirements increase
Solution Approach 1:
The patent replaces the need for a large-output driving source with a more efficient transmission system. By using a transmission shaft that extends into the rotary base and a belt-driven linear movement mechanism, the system achieves the required rotation capability with a smaller motor. The linear movement mechanism reduces the inertial force during rotation, allowing for a compact and power-efficient design.
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
Enables increased travel distance of the hand without increasing the weight of the linear movement mechanism, allowing for efficient and stable operation with a smaller motor, thus enhancing manufacturing efficiency and reducing space and power requirements.
Implementation Method 1
The driving mechanism includes a bevel gear mechanism arranged between the transmission shaft and the driving pulley
Implementation Method 2
The driving mechanism comprises a plurality of pulleys, including a driving pulley supported rotatably around a horizontal axis, and an output belt wound around the plurality of pulleys
Data Source
AI summary
A transfer apparatus includes a stationary base, a swivel rotatable around a vertical rotation axis, a linear movement mechanism supported by the swivel, a hand supported by the linear movement mechanism for transferring a work along a horizontal path, a driving power source in the stationary base, and a transmission shaft arranged along the rotation axis for transmitting driving force from the driving power source to the linear movement mechanism. The linear movement mechanism includes a driving mechanism and a guide rail for movably supporting the hand. The driving mechanism has a plurality of pulleys, including a driving pulley supported rotatably around a horizontal axis, and an output belt wound around the plurality of pulleys for reciprocal movement within a predetermined section extending parallel to the movement path. The hand is connected to the output belt via a connection member.