Press Die Backing Plate Wall Structure for Close Hole Spacing
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Solution Overview
Problem
The existing press die apparatuses face a reduction in strength due to the proximity of die holes, which leads to narrower partition walls in the backing plate, compromising the apparatus's structural integrity.
Innovation Solution
The press die apparatus incorporates a backing plate with second partition walls that have a widened section, increasing in width continuously or stepwise away from the die, with a maximum width greater than the first partition walls, thereby maintaining structural integrity even when die holes are proximate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If die holes are located proximate to each other to increase productivity, then the number of punched members per unit area increases, but the partition wall width decreases and strength is reduced
Solution Approach 1:
The partition wall is designed with non-uniform thickness, featuring a widened section that provides increased strength at critical locations while maintaining narrow sections elsewhere to accommodate closely spaced die holes. This local variation in geometry allows the partition wall to satisfy both the productivity requirement (close die hole spacing) and the strength requirement (adequate partition wall strength) simultaneously.
2Area of stationary object
If partition wall width is reduced to accommodate closely spaced die holes, then more die holes can be arranged in the same area, but the structural integrity of the backing plate is compromised
Solution Approach 1:
The partition wall incorporates a widened section with increased thickness at specific locations within the backing plate, while other sections maintain reduced width to allow closely spaced die holes. This localized geometric modification strengthens the partition wall at critical positions without preventing the overall reduction in partition wall width needed for high-density die hole arrangement.
Solution Approach 2:
The partition wall transitions from a uniform two-dimensional cross-section to a three-dimensional structure with varying thickness. The widened section adds volume and structural capacity in the thickness dimension, compensating for the reduced width in the planar dimension, thereby maintaining structural integrity despite reduced overall partition wall width.
Data Source
AI summary
A press die apparatus includes a die and a backing plate. The die includes die holes into which punches are respectively inserted and withdrawn and first partition walls, each separating adjacent ones of the die holes from each other. The backing plate is adjacent to the die to support the die. The die includes die hole groups. The backing plate includes backing holes respectively connected to the die hole groups and a second partition wall, separating adjacent ones of the backing holes from each other. The second partition wall has a widened section that increases in width, continuously or in a stepwise manner, as the widened section extends away from the die. A maximum width of the widened section is greater than a width of the first partition wall.