Tire Core Profile Winding Drum Splicing Method
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Solution Overview
Problem
During tire manufacture, the material undergoes uncontrolled deformation and shrinkage after being cut to length, preventing an automatic high-quality splice when winding and splicing tire components on a winding drum.
Innovation Solution
A method involving an endless strip of material being fed and gripped, with precise fixing and cutting mechanisms to prevent deformation, where the rear end is firmly fixed before cutting, and then synchronized with the front end on a winding drum to form a closed ring, using needle grippers, vacuum suction, and a feed roller to ensure controlled assembly and minimize material stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the material strip is cut to length before winding, then the cutting operation can be performed, but uncontrolled deformation and shrinkage occurs preventing high-quality splice
Solution Approach 1:
The patent applies preliminary action by fixing the rear end of the material strip with the first fixing means before the cutting operation. This preliminary fixation prevents uncontrolled deformation and shrinkage that would otherwise occur during cutting, ensuring the material maintains its dimensional stability throughout the cutting process and enables high-quality splicing.
Solution Approach 2:
The patent applies preliminary anti-action by using the first fixing means to counteract the anticipated deformation and shrinkage forces that will occur during cutting. By applying this counteracting force in advance through the fixing means, the material strip maintains its shape and dimensions, preventing the harmful effects of uncontrolled deformation.
2Productivity
If automatic splicing is implemented, then productivity increases, but material deformation prevents achieving high splice quality
Solution Approach 1:
The patent applies preliminary action by fixing both ends of the material strip before cutting and winding operations. This preliminary fixation ensures that when automatic splicing is performed, the material maintains its dimensional stability and does not deform, thereby achieving both high productivity through automation and high splice quality through controlled material handling.
Solution Approach 2:
The patent applies feedback by using sensors to detect the position and state of the material strip during the winding and splicing process. This feedback information is used to adjust the winding drum rotation and gripping means operation in real-time, ensuring that automatic splicing achieves high precision despite the complexities of material deformation.
3Device complexity
If the rear end is not fixed before cutting, then the process is simpler, but material shrinkage and deformation occur
Solution Approach 1:
The patent applies preliminary action by implementing a fixing mechanism that secures the rear end of the material strip before cutting operations. While this adds some device complexity, it is a relatively simple fixation system that effectively prevents material shrinkage and deformation, maintaining the material's shape throughout the cutting and winding process.
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 method allows for a simple, precise, and high-quality splicing of tire core profiles with reduced material wastage and increased manufacturing efficiency by preventing uncontrolled changes in the material length and shape, resulting in a high-quality connection splice.
Implementation Method 1
the second fixing means is a sucker or hold-down device arranged in the infeed table
Implementation Method 2
the gripping means are needle grippers or vacuum grippers
Data Source
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AI summary
The invention relates to a method for winding and splicing a core profile for a vehicle tire with a winding drum. In order to provide a method that allows a simple and precise way to wind and splice a core profile, the following method is proposed, comprising the following steps: conveying an endless material strip (2) onto a feed platform (4), gripping the free front end (5) of the material strip (2) with a first gripping means (7), displacing the first gripping means (7) and fixating the free end (5) of the material strip (2) onto the winding drum (1), rotating the winding drum (1) in order to wind the material strip (2), fixing the rear end (6) of the material strip (2) with a first fixing means (8) in front of and a second fixing means (9) behind the cutting surface (14) to be separated in the material strip (2) on the feed platform (4), separating the material strip (2) with a cutting means (11), wherein the length of the material strip (2) to be separated is substantially equal to the circumference of the winding drum (1), assembling both free ends (5, 6) of the material strip (2) on the winding drum (1) and splicing both free ends (5, 6) of the material strip on the winding drum (1) to form a closed ring.