Rotatable Marking Head Alignment for High Resolution
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Solution Overview
Problem
Existing marking apparatuses face challenges in maintaining high marking quality due to misalignment between the marking head and the object's movement direction, leading to reduced resolution and quality of markings.
Innovation Solution
A rotatable marking head with a two-dimensional array of receiving spaces and a detector device that can detect control markings at various angles, allowing for adjustment of the marking head's position to optimize marking resolution and alignment with the object's movement direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the marking head is fixed in position, then the device structure is simple, but the marking resolution and quality deteriorate due to misalignment with the object's movement direction
Solution Approach 1:
The marking head is made rotatable about an axis extending transversely to the advance direction, allowing dynamic adjustment of the marking head's orientation angle relative to the object's movement direction. This enables the system to adapt to different marking tasks and maintain high marking quality by optimizing the alignment between the marking head and the object's movement direction.
Solution Approach 2:
The orientation angle of the marking head is changed as a variable parameter. By rotating the marking head to different angles, the system can optimize the marking resolution and alignment for different marking tasks. The detector device measures the actual angle of rotation to determine the optimal orientation.
2Manufacturing precision
If the marking head is rotatable to adjust orientation, then the marking quality improves, but the device complexity increases
Solution Approach 1:
A detector device is arranged downstream of the receiving spaces to detect control markings applied by the marking devices. The detector provides feedback on the position and quality of the control markings, which is used to determine the actual angle of rotation of the marking head and to optimize the marking parameters for high marking quality.
Solution Approach 2:
The patent replaces complex mechanical alignment mechanisms with a combination of rotatable marking head and detector-based feedback system. Instead of using complex mechanical guides or fixed precision mounting, the system uses controlled rotation and optical/electrical detection to achieve and maintain optimal alignment.
3Manufacturing precision
If the marking head is rotated to optimize alignment, then the marking resolution improves, but the control and measurement complexity increases
Solution Approach 1:
A control marking is applied in advance on the object by the marking devices before the actual marking operation. This control marking serves as a reference for the detector device to measure the actual angle of rotation of the marking head, enabling precise determination of the marking head's orientation.
Solution Approach 2:
The control marking acts as an intermediary element between the marking head and the detector device. It transfers the rotational position information of the marking head into a detectable form that the detector can measure, simplifying the angle measurement process.
Data Source
AI summary
The invention relates to a marking apparatus for marking an object comprising a marking head having a plurality of receiving spaces for individual marking devices, wherein the receiving spaces are arranged in a plurality of rows and columns, such that a two-dimensional array of receiving spaces is formed, and a driving mechanism for providing a relative movement of the object relative to the marking head in an advance direction during a marking operation. The marking head is rotatable about an axis extending transversely to the advance direction, at least one detector device is arranged downstream of the receiving spaces in the advance direction, and a control marking, which has been applied by at least one marking device arranged in one of the receiving spaces during the movement of the object relative to the marking head, is detectable by the at least one detector device at different angles of rotation of the marking head. The invention further relates to a method for operating a marking apparatus.