Shear Press Jaw Profile for Wider Scrap Compaction Channels
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Solution Overview
Problem
Current shear press designs are limited by the geometry of the jaws, which restrict the maximum width of the compaction channel, preventing the processing of larger scrap materials without extensive redesign.
Innovation Solution
The jaws' operating surfaces are redesigned with a unique cross-sectional geometry, featuring a first rectilinear stretch parallel to the scrap's advance direction and an aligned extreme point, allowing increased width without altering the angular stroke or length, and optionally incorporating a concave profile for enhanced compaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the degree of inclination of the rectilinear stretches is increased to avoid pushing scrap back, then the jaws can press scrap effectively, but the distance between distal ends of the two jaws in open configuration decreases, limiting the maximum width of the compaction channel
Solution Approach 1:
The invention changes the geometry of the operating surface cross-section from a simple rectilinear shape to a composite shape with multiple stretches at different orientations. By adding a second rectilinear stretch that is not parallel to the advance direction, the design utilizes additional geometric dimensions to achieve both effective pressing force and adequate channel width without increasing the angular stroke.
Solution Approach 2:
Different portions of the operating surface are given different geometric properties. The first rectilinear stretch is oriented to provide pressing force, while the second rectilinear stretch is oriented to maintain adequate distance between jaws in open configuration. This local differentiation of surface geometry allows simultaneous optimization of both pressing effectiveness and channel width.
2Area of stationary object
If the length of the jaws or the distance between their distal end and the axis of rotation is increased to increase the maximum width of the compaction channel, then the channel width increases, but this requires extensive redesign and modification of the whole shear press
Solution Approach 1:
The invention changes the geometric parameters of the operating surface cross-section (adding a second rectilinear stretch with specific orientation) rather than changing the overall jaw length or angular stroke parameters. This parameter change at the surface geometry level achieves the desired increase in compaction channel width without requiring redesign of the entire shear press structure.
Solution Approach 2:
The operating surface cross-section is segmented into multiple rectilinear stretches with different orientations rather than using a single continuous surface. This segmentation allows independent optimization of different functional requirements (pressing force direction and jaw spacing) without affecting the overall jaw structure or requiring system-wide redesign.
3Reliability
If the degree of inclination is limited to avoid pushing scrap back, then the jaws press scrap effectively, but the maximum width of the compaction channel is limited
Solution Approach 1:
The invention resolves the conflict between scrap flow stability and channel width by transitioning from a single-orientation rectilinear surface to a multi-orientation composite surface. The second rectilinear stretch provides an additional geometric dimension that allows the jaw geometry to satisfy both the stability requirement (through the first stretch's orientation) and the width requirement (through the second stretch's extension).
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 configuration increases the maximum width of the compaction channel, enabling the processing of larger scrap without modifying the shear press's structure, while maintaining effective compaction and scrap flow.
Implementation Method 1
two mutually opposed jaws articulated to the machine body according to axes of rotation parallel to each other and orthogonal to the advance direction of the scrap, and actuating members adapted to rotate said jaws around the respective axes of rotation
Implementation Method 2
compaction means adapted to compact the scrap into the compaction channel
Implementation Method 3
cutting means positioned at an axial end of the compaction channel to separate the compacted scrap into portions
Implementation Method 4
the compaction channel may be inferiorly delimited by an inclined bottom plane, which is adapted to define a sort of slide that allows the scrap to slide downwards simply by the effect of gravity
Data Source
AI summary
A shear press for scrap including a machine body defining a compaction channel to contain the scrap and guide it in a sliding manner along a predetermined advance direction a compaction unit and blades. The compaction unit includes two mutually opposed jaws articulated to the machine bod according to axes of rotation parallel to each other and orthogonal to the advance direction of the scrap, and actuating members to rotate the jaws around the respective axes of rotation, in opposite directions, between an open configuration and a closed configuration. Each aw includes an operating surface to laterally de-limit the compaction channel when the jaw is in open configuration. The extreme point of a first rectilinear stretch with respect to the axis of rotation of the jaw is aligned to the latter along a direction of alignment which forms, with the first rectilinear stretch, an angle having its vertex facing the inner part of the compaction channel.