Scored Hinge Cap Shingle Manufacturing with Synchronized Scoring
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Solution Overview
Problem
The challenge in roofing shingle manufacturing is forming score lines across shingle material without causing lane breakage due to lane tension, which is particularly difficult during the processing of cap shingles like ridge and hip cap shingles.
Innovation Solution
A method and apparatus that involves adding a separate scoring cylinder upstream of the second pattern cutter in the shingle manufacturing line, synchronized with the cutter to precisely control the scoring process, allowing for score lines to be applied after laminating ribbons together or on the back of single-layer shingles, minimizing tension-induced breakage and facilitating bending during installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a score line is applied across a moving lane of shingle material during manufacture, then the shingle can be bent more easily and precisely over a roof ridge or hip, but the lane tension causes the shingle lane to break at the score line
Solution Approach 1:
The score line is applied in advance during the manufacturing process, immediately after lamination and before the lane is cut into individual shingles. This preliminary action creates the bend line while the material is still in a stable, continuous state, allowing the score to be formed without causing breakage during subsequent handling or installation.
Solution Approach 2:
The scoring operation is separated from the cutting operation by placing the scoring cylinder upstream of the second pattern cutter. This segmentation allows the scoring to be performed on the continuous lane at a location where tension is minimized, and the lane is subsequently cut into individual shingles that can be handled without risk of breakage at the score line.
2Manufacturing precision
If a separate scoring cylinder is added upstream of the second pattern cutter, then precise control of score line placement is achieved, but the device complexity increases
Solution Approach 1:
The separate scoring cylinder is integrated into the existing manufacturing line by positioning it upstream of the second pattern cutter and synchronizing it with the cutting operation. This merging approach adds the scoring function to the existing workflow without creating a completely separate system, thereby achieving precise score line placement while minimizing overall device complexity.
Solution Approach 2:
The scoring cylinder acts as an intermediary component between the lamination process and the final cutting operation. It performs the scoring function at an optimal point in the process where the material is stable, and its synchronization with the second pattern cutter ensures precise positioning without requiring complex independent control systems.
Data Source
AI summary
A cap shingle configured to be installed over a hip or ridge of a roof structure, and a method for creating scored hinge lines in hip and ridge cap shingles during manufacturing while minimizing the likelihood of breakage along the scored hinge lines due to lane tension are disclosed. The method includes forming score lines with a scoring cylinder across lanes of shingle material just before the lanes are cut into individual cap shingles with a pattern cutter. The scoring cylinder and pattern cutter are controlled so that the score lines are consistently applied along the centerlines of the cap shingles.