Shingle Cutting Machine Pivotable Frame and Vertical Collection
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Solution Overview
Problem
Existing shingle cutting machines are inefficient and cumbersome due to the protruding retainers and bumpers that interfere with the installer's legs, making them awkward to use when cutting 3-Tab shingles into individual tabs for roof applications, especially at intersecting roof regions.
Innovation Solution
A shingle cutting machine design featuring a frame with pivotable upper and lower assemblies, including blade assemblies and a retaining mechanism, that allows for efficient cutting and collection of shingle tabs without extending beyond the machine's perimeter, maintaining a fixed receiving area orientation during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing shingle cutting machines use protruding retainers and bumpers to hold and transfer shingles, then the shingles can be retained and transferred during cutting, but the protruding components interfere with the installer's legs and make the machine awkward to use
Solution Approach 1:
The patent removes the protruding retainers and bumpers from the machine exterior, extracting the harmful components that interfere with the installer's legs. The shingle retention function is maintained through alternative means within the machine's perimeter, eliminating the need for external protruding structures.
Solution Approach 2:
The patent transitions from horizontal protruding retainers to a vertical collection area design. Cut shingles fall vertically into a collection area defined below the receiving area, changing the dimension of shingle storage from horizontal extension to vertical containment within the machine footprint.
2Ease of manufacture
If the machine uses a collection area that extends beyond the perimeter to receive cut shingles, then cut shingles can be easily collected, but the machine becomes larger and more cumbersome
Solution Approach 1:
The collection area is nested within the machine's perimeter, with the retaining mechanism extending downwardly from the receiving area but staying within the perimeter boundaries. This nested design allows complete shingle collection functionality without increasing the machine's external footprint.
3Adaptability or versatility
If the receiving area orientation changes during cutting operation, then the cutting blades can access the shingle from different angles, but the receiving area becomes unstable and difficult to operate
Solution Approach 1:
The patent divides the frame into pivotable upper and lower assemblies, allowing the upper cutting assembly to rotate independently. This segmentation enables the cutting blades to approach the shingle from different angles while the receiving area remains fixed and stable in its orientation.
Solution Approach 2:
The patent implements a pivotable upper assembly that can rotate to different cutting positions, introducing dynamic movement to the cutting mechanism while keeping the receiving area static. This allows adaptable cutting angles without compromising receiving area stability.
Data Source
AI summary
A shingle cutting machine having a frame having an upper frame assembly and a lower frame assembly is disclosed. The upper frame assembly is pivotable relative to the lower frame assembly between a shingle loading position and a shingle cutting position. The shingle cutting machine has a receiving area defined in the lower frame assembly for receiving a shingle therein. An upper blade assembly is provided on the upper frame assembly and a lower blade assembly is provided on the lower frame assembly. The upper and lower blade assemblies are operable in the receiving area to cut a shingle in the receiving area. A collection area defined vertically below the receiving area does not extend outwardly beyond a perimeter of the lower frame assembly. Shingle tabs cut from the shingle drop directly from the receiving area and into the collection area.