Rod Cutting with Weakened Insert Tape and Optical Inspection
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Solution Overview
Problem
Current methods for manufacturing rod-like articles in the tobacco industry are inefficient in terms of energy consumption and quality control, particularly in cutting continuous rods with inserted heating elements, which affects the consistency and quality of the final products.
Innovation Solution
A method and apparatus that incorporate a weakening mechanism in the insert material tape, allowing for reduced energy consumption during cutting by utilizing a cutting head synchronized with the movement of the continuous rod, and employing optical and microwave sensors for quality control to ensure compatibility with predefined models of shear surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a cutting head is used to cut the continuous rod, then the rod-like articles are produced, but high energy consumption occurs
Solution Approach 1:
The insert material tape is divided into individual insert elements at predefined separation lines, allowing the cutting process to target only the weaker insert material rather than the entire continuous rod structure. This segmentation enables the cutting head to separate rod sections with minimal energy expenditure by exploiting the predetermined weak points in the insert material.
Solution Approach 2:
The insert material tape is prepared in advance with predefined separation lines that create weaker sections before the cutting process begins. This preliminary action of creating weak points during tape formation allows the cutting head to perform minimal work during actual cutting, as the separation lines have already established the paths of least resistance for rod separation.
2Stability of the object's composition
If the heating element is placed centrally in the aerosol generating material, then even distribution is achieved, but quality control difficulty increases
Solution Approach 1:
The optical detection system detects variations in light absorption or reflection properties of the insert material versus the aerosol generating material. The microwave detection system exploits differences in dielectric properties between the materials. These detection methods automatically identify the centrally positioned heating element and verify proper material distribution without complex mechanical measurement systems.
Solution Approach 2:
Traditional mechanical measurement and inspection methods are replaced with optical and microwave detection systems. These non-contact detection methods can penetrate and analyze the internal structure of the continuous rod, detecting the position and distribution of the heating element and the uniformity of material composition without physical contact or complex mechanical probes.
3Measurement precision
If optical and microwave sensors are used for quality control, then measurement precision improves, but device complexity increases
Solution Approach 1:
The optical and microwave sensors serve multiple functions: detecting the insert material position, verifying central placement of heating elements, checking material distribution uniformity, and identifying defects. This multi-functionality reduces the need for separate specialized detection devices for each quality parameter, thereby limiting the increase in overall device complexity while maintaining high measurement precision across multiple quality dimensions.
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
The method reduces energy consumption during cutting and improves the quality of manufactured rods by ensuring consistent shear surfaces, enhancing the overall efficiency and precision of the rod-making process.
Implementation Method 1
The heating element may be inductively heated, the generated energy is used to heat the tobacco material
Implementation Method 2
a cutting head which is configured to cut a continuous rod
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A method for manufacturing rod-like articles for tobacco industry, the rod-like articles comprising longitudinal inserts located in a filling material, the method comprising: feeding a continuous tape-like wrapper (14); feeding a strand of the filling material (2) onto the moving wrapper (14); feeding an insert material (9), in a form of a tape having weakenings (30), into the strand of the filling material (2); forming a continuous rod (CR) by wrapping the wrapper (14) around the strand of the filling material (2) with the insert material (9); cutting the moving continuous rod (CR) into discrete rod-like articles (R) by a cutting head (16) at a cutting plane that traverses the weakening (30) in the tape (9) of the insert material; the method being characterized by: inspecting ends of the insert (9A) in the rod like article (R) cut from the continuous rod (CR) and comparing the ends with a predefined model to obtain a measure of similarity; and depending on the similarity, adjusting the action of the cutting head (16) with respect to the movement of the continuous rod (CR) such as to increase the similarity between the ends of the insert (9A) to the model in a following rod like article (R).