H-Gantry Lens Loading for High-Throughput Deblocking
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Solution Overview
Problem
Existing loading systems for optical machines, such as those used in spectacle lens production, are cumbersome and lack dynamics, limiting throughput in industrial production environments.
Innovation Solution
A loading system with a carrier moved via H or cross portal linear guide units, driven by stationary motors, allowing high acceleration and efficient movement of optical workpieces and block pieces between transfer and loading stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional loading systems are used, then structural simplicity is maintained, but dynamics and throughput are limited
Solution Approach 1:
The loading system is divided into modular components: H-portal linear guide units for precise positioning, stationary drive motors for high acceleration, and movable carriers for workpiece transport. Each module operates independently, enabling high-speed movement while maintaining system manageability through functional segmentation.
Solution Approach 2:
The system employs dynamic design elements including movable carriers that accelerate rapidly via stationary motors, carriers that can move in multiple directions (x, y, z axes), and a flexible H-portal structure that enables high-speed positioning. This dynamic architecture directly increases throughput while the modular nature keeps complexity manageable.
2Speed
If high acceleration is implemented, then throughput increases, but system complexity increases
Solution Approach 1:
Instead of mounting motors on moving carriers (which would add complexity to moving parts), the drive motors are positioned stationary on the machine frame. The motors drive the carriers through belts or gears, inverting the traditional arrangement. This achieves high acceleration while keeping the drive system simple and maintenance-free.
Solution Approach 2:
Belts or gears act as intermediaries between the stationary motors and the movable carriers. This mediation allows high acceleration to be transmitted from fixed motors to moving carriers, separating the complexity of the drive system from the moving components and simplifying overall system architecture.
3Measurement precision
If H-portal linear guide units are used, then positioning precision is improved, but device complexity increases
Solution Approach 1:
The H-portal linear guide units serve multiple functions: they provide precise positioning in x and y directions, support high acceleration movements, guide carrier motion along defined paths, and enable rapid positioning between workstations. This multi-functionality achieves high precision without proportionally increasing complexity, as a single H-portal structure accomplishes what would otherwise require multiple separate mechanisms.
Data Source
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AI summary
The invention relates to a loading system (LS) for an optical machine, in particular for the loading and unloading of optical workpieces (L), such as eyeglass lenses, and/or of block pieces (B) for blocking the workpieces and/or of tools. Said loading system has a carrier (TR), which can be moved in a movement plane (x-y) by means of two linear guide units (LF1, LF2). At least one holder (H1, H2, H3) for the workpiece, block piece and/or tool is mounted on the carrier, which holder can be moved in a perpendicular direction (z), which is perpendicular to the movement plane. The linear guide units are designed and arranged in the manner of an H gantry or cross gantry, with two stationary drive motors (AM1, AM2) for driving a tension element (ZG) in the same direction or in opposite directions, which tension element is movably arranged on the linear guide units in an H shape or cross shape and is fastened to the carrier. The loading system is preferably used in a deblocking device (AV) to transport blocked and deblocked workpieces and block pieces very highly dynamically between a transfer station (TS) and a loading station (PS) of the deblocking device and to receive and release said workpieces and block pieces there.