Adhesive Tape Cutting Alignment via Web Scanning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for producing adhesive tapes for cable harnesses often result in inconsistent adhesive strip positioning due to substrate elongation and transverse movement, leading to deviations and complications in handling and logistics, particularly between left-hand and right-hand winding configurations.
Innovation Solution
A method utilizing a sensor to scan the web strip for contrast differences between adhesive and non-adhesive areas, allowing for precise alignment and cutting of the adhesive strip, ensuring a reproducible edge profile and position, which is maintained through feedback control and actuator adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If rotating knives of a cutter bar are used to cut the web strip, then the cutting operation is simple and efficient, but the position of the adhesive strip relative to the edge of the adhesive tape becomes inconsistent due to substrate elongation and transverse movement
Solution Approach 1:
The adhesive strip is applied to the substrate web before the cutting operation, and its position is recorded by a sensor system. This preliminary positioning information is then used to guide the cutting knives to make precise longitudinal cuts that maintain consistent spacing from the adhesive strip edges, regardless of substrate movement during processing.
Solution Approach 2:
A sensor system scans the web strip to detect the actual position of the adhesive strip and provides feedback signals to the cutter control system. This feedback enables real-time adjustment of the cutting position to compensate for substrate elongation and transverse movement, ensuring consistent adhesive strip positioning on the finished adhesive tapes.
2Manufacturing precision
If the substrate web is guided vertically through the coater, then adhesive strip application is precise and straying is minimized, but the system cannot compensate for substrate elongation and transverse movement during subsequent processing
Solution Approach 1:
The adhesive strip is applied in a controlled vertical path through the coater to ensure precise initial placement. Subsequently, a sensor system records the actual position of the applied adhesive strip, and this information is used to guide the cutting operation to maintain consistent positioning on the finished adhesive tape despite any substrate movement that occurs during processing.
Solution Approach 2:
A sensor system continuously monitors the position of the adhesive strip on the moving substrate web and provides feedback to the cutter control system. This feedback mechanism enables dynamic compensation for substrate elongation and transverse movement, ensuring that the adhesive strip maintains its correct position relative to the edges of the cut adhesive tapes.
3Adaptability or versatility
If different adhesive tapes are produced for left-hand and right-hand winding, then specific cable harness configurations can be achieved, but logistics and handling become more complex
Solution Approach 1:
The cutting system makes precise longitudinal cuts at specific positions relative to the adhesive strip, creating adhesive tapes with defined edge profiles. By controlling the cut positions, the system can produce tapes with adhesive strips positioned to accommodate either left-hand or right-hand winding configurations, allowing versatility while maintaining consistent manufacturing processes.
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 ensures the production of adhesive tapes with consistently accurate adhesive strip positioning, simplifying logistics and enabling the creation of identical tapes for either left-hand or right-hand winding applications, improving handling and processing efficiency.
Implementation Method 1
A sensor scanning the web strip is used to align the web strip and/or the cutter in the transverse direction... The sensor scans the web strip for contrast differences between adhesive and non-adhesive areas
Data Source
AI summary
The subject matter of the present invention is a method and a device for producing an adhesive tape (1). First a material web (2) comprising a carrier tape material is supplied from an unwinding unit (3). The supplied material web (2) is subsequently provided on at least one surface with at least one adhesive strip (4) in a coating unit (6). The material web (2) provided with the adhesive strip (4) is then cut into at least two longitudinal strips with the aid of a cutting device (10) and made up into individual adhesive tapes (1). According to the invention, a sensor (8, 9) scanning the material web is used to align the material web (2) and/or the cutting device (10) in the transverse direction (Q) in such a way that a longitudinal cut (S) respectively produced with the aid of the cutting device (10) is introduced in an exact position into the material web (2).