Heated Microdot Marking Head for Permanent Engraving on Elastic Materials
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Solution Overview
Problem
Existing microdot marking machines are ineffective on elastic materials like hide, leather, and plastic, and hot marking with punches is impractical and expensive for producing varied shapes or lettering, requiring multiple dies and long production times.
Innovation Solution
A microdot marking machine with a percussion tool heated to 60-600°C, preferably 100-400°C, creates microdots on elastic materials by sliding and heating, allowing permanent engravings with a single tool and interchangeable shapes without lengthy die changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a percussion tool is used for microdot marking, then hard surfaces can be marked effectively, but elastic materials like hide, leather, and plastic cannot be marked permanently because the grooves vanish due to elastic deformation
Solution Approach 1:
The patent combines two previously separate marking approaches (percussion marking and hot marking) into a single integrated system. The percussion tool is equipped with both a percussion mechanism and a heating element, allowing it to deliver mechanical impacts and thermal energy simultaneously or sequentially to achieve permanent marking on elastic materials
Solution Approach 2:
The patent changes the physical state of the percussion tool by heating it to high temperatures (typically 200-1000°C). This temperature parameter change allows the tool to permanently alter elastic materials through thermal effects, transforming the marking mechanism from purely mechanical to thermomechanical
2Adaptability or versatility
If hot marking with a punch and die is used on elastic materials, then permanent markings can be achieved, but multiple interchangeable dies are required for different shapes, making the process expensive and time-consuming
Solution Approach 1:
The patent makes the percussion tool universal by equipping it with a heating element that enables it to mark elastic materials regardless of shape requirements. The tool can mark various shapes by varying the movement path and pattern of the single tool, eliminating the need for multiple specialized dies
Solution Approach 2:
The patent introduces dynamic control of the percussion tool's movement and heating parameters to achieve shape variation. By dynamically adjusting the tool's position, speed, and thermal input during operation, different shapes and patterns can be created with a single versatile tool
3Reliability
If the percussion tool is heated to high temperatures, then elastic materials can be permanently marked, but the heat may affect other machine components and pose safety risks to the user
Solution Approach 1:
The patent applies heating locally only to the percussion tool tip where marking occurs, rather than heating the entire tool or surrounding components. This localized thermal application minimizes heat spread to other machine parts while maintaining effective marking temperature at the contact point
Solution Approach 2:
The patent employs brief, intermittent heating cycles that coincide only with the brief moments when the percussion tool contacts the material. The heating element activates only during impact events, rapidly delivering thermal energy and then disengaging, thereby minimizing total heat exposure to the machine and user
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 practical and cost-effective permanent marking on elastic materials with variable shapes or lettering using a single tool, ensuring user and machine safety while maintaining efficiency.
Implementation Method 1
a heating assembly (6) configured to heat the percussion tool (3)
Implementation Method 2
By using heat it is possible to change the physical state of the portion of the surface pressed by the punch and mark the object permanently
Data Source
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AI summary
The present invention relates to a marking machine (1) having a marking head (2) provided with a percussion tool (3) configured to alter at least partly a surface of an object to be marked, movement means (4) configured to move said percussion tool (3) along a direction of percussion (al), and a heating assembly (6) configured to heat said percussion tool (3).