Mandrel Rod Holdback Actuation Using Stationary Traction Drive
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Solution Overview
Problem
Existing energy supply systems for actuating elements in movable units, such as mandrel rods, are limited by acceleration, speed, and service life, requiring excessive drive power and increasing cycle time due to their weight and inflexible energy transmission.
Innovation Solution
The system employs a stationary activating unit with traction elements like ropes, wires, or belts to transmit movement energy to actuators on movable units, reducing weight and enabling flexible actuation at any position and speed, with mechanisms acting as tensioning and buffering devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If electric or hydraulic actuating devices are arranged on the movable unit with energy supply via cable carrier or hose supply, then the actuators can be supplied with energy, but the system has considerable dead weight, limited acceleration and speed, and requires significantly more drive power
Solution Approach 1:
The energy supply system is extracted from the movable unit and relocated to a stationary unit. The actuator remains on the movable unit but is actuated by a mechanical linkage (traction element) connected to the stationary unit, eliminating the need for heavy energy supply chains on the movable unit.
Solution Approach 2:
A mechanical intermediary system consisting of the traction element and actuating mechanism serves as the mediator between the stationary activating unit and the movable unit. This mechanical linkage transmits actuation forces without requiring energy supply through the movable unit.
2Ease of operation
If electric or hydraulic actuating devices are arranged on the movable unit, then the actuators can be actuated, but the drive power required is significantly increased and cycle time is detrimental
Solution Approach 1:
The heavy energy supply system is extracted from the movable unit, leaving only the lightweight actuator on the movable unit. The actuation function is transferred to the stationary unit through the mechanical linkage, reducing the power required to move the movable unit.
3Use of energy by moving object
If traditional energy supply systems are used on the movable unit, then energy can be supplied to actuators, but the system has limited acceleration, speed, and service life
Solution Approach 1:
The energy supply system is extracted from the movable unit and placed on the stationary unit. This eliminates the mass and inertia of the energy supply components from the movable unit, enabling higher accelerations and speeds.
Solution Approach 2:
The electrical or hydraulic energy supply system is replaced with a direct mechanical actuation system. The mechanical linkage (traction element) directly transmits actuation forces from the stationary unit to the actuator on the movable unit, providing more responsive and flexible actuation.
4Ease of operation
If energy supply devices with considerable dead weight are used on the movable unit, then actuators can be actuated, but significantly more drive power has to be installed
Solution Approach 1:
The heavy energy supply device is extracted from the movable unit and relocated to the stationary activating unit. Only the lightweight actuator and traction element remain associated with the movable unit, dramatically reducing its total weight.
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 configuration reduces the overall drive power required, allows higher accelerations and speeds, and lowers maintenance costs while ensuring actuation flexibility and reliability, even at standstill positions.
Implementation Method 1
at least one traction element (160) is provided for transmitting the movement energy of the actuating mechanism (150) to the actuator (130) on the movable unit (110)
Data Source
AI summary
A system that has a movable unit and an activating unit. The movable unit is equipped with at least one actuating element, which can be actuated using an actuator that is arranged on the movable unit. The activating unit includes an actuating mechanism for actuating the actuator for the actuating element. In order to simplify, reduce the cost of and make more flexible the energy supply to the actuator for adjusting the actuating element on the movable unit, the activating unit is installed in a stationary manner relative to the movable unit. At least one traction element is provided for transmitting the movement energy of the actuating mechanism to the actuator on the movable unit in the form of a traction force for adjusting the actuating element.