Embossing Apparatus for Crown Caps with Optical Positioning
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Solution Overview
Problem
Existing methods for embossing caps for containers often deform or damage the objects and lack flexibility in producing complex designs with high precision, especially when forming raised and recessed patterns on concave bodies with internal seals.
Innovation Solution
A method and apparatus for embossing concave bodies, such as caps, that allows for the formation of raised and recessed patterns separately from the molding process, using a carousel system with rotating embossing units and sensors to position and emboss designs on caps without deforming them, enabling the production of complex designs with internal seals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If embossing is performed using a compression punch on concave bodies, then raised patterns can be formed on caps, but the objects are deformed or damaged
Solution Approach 1:
The embossing process is divided into multiple stages: first forming the cap structure, then separately embossing the raised patterns. This segmentation allows each operation to be optimized independently, reducing deformation and damage while maintaining manufacturing precision.
Solution Approach 2:
The cap structure is fully formed before embossing the raised patterns. This preliminary action ensures the base structure is stable and properly positioned, allowing the embossing punch to apply force precisely without causing deformation or damage to the overall cap structure.
2Productivity
If embossing is integrated with the molding process, then production efficiency is improved, but flexibility in producing complex designs is reduced
Solution Approach 1:
The manufacturing process is segmented into distinct operations: cap molding, seal insertion, and separate embossing. This allows the embossing step to be performed independently with different design patterns on different production runs, providing design flexibility while maintaining overall production efficiency through streamlined workflow.
Solution Approach 2:
The embossing apparatus is designed to be adaptable and reconfigurable, allowing different punch patterns to be applied to caps produced at different times. This dynamic capability enables production of complex varied designs while maintaining efficient production throughput.
3Device complexity
If simple embossing apparatus is used, then device complexity is reduced, but manufacturing precision and ability to produce complex designs is compromised
Solution Approach 1:
The embossing apparatus is designed with multi-functionality, capable of performing multiple embossing operations and accommodating different design patterns. This universal design achieves high manufacturing precision and complex design capability without requiring multiple separate specialized devices, thus avoiding excessive complexity.
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 approach simplifies and cost-effectively produces caps with high precision and flexibility, allowing for rapid formation of embossed bodies with aesthetic value, reducing the risk of damage and enabling efficient production of caps with complex shapes and designs on both sides.
Implementation Method 1
sensors to position and emboss designs on caps
Data Source
AI summary
A method of embossing a crown cap comprises the steps of: detecting a pre-printed drawing on the bottom of the crown cap, varying the angular positioning of the crown cap so as to position the drawing according to a preset positioning, and impressing a raised/recessed pictogram on the bottom of the crown cap. The pre-printed drawing and the embossed pictogram will have a desired reciprocal position.