Press Tooling Distance Member for Deformation-Free Release
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Solution Overview
Problem
The existing press tooling systems face durability issues due to the large distance between the center of gravity of the joint link and the outer cam, leading to relative positional accuracy problems and potential damage, which complicates maintenance and increases costs.
Innovation Solution
A press tooling system with a distance member pivotably supported by the holder and a moving device on the first die unit that causes the distance member to pivot, ensuring the distance between the pad and the holder remains above a predetermined distance, reducing the risk of deformation and damage during the forming process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pressing force by the holder is reduced to lower the inflow resistance on the outer edge portion of the starting material, then the generation of cracks can be suppressed, but the starting material cannot be properly expanded and wrinkles may be generated
Solution Approach 1:
The invention applies different pressing forces to different regions of the starting material. The holder presses the outer edge portion with a first pressing force, while the pad presses the central portion with a second pressing force that is smaller than the first pressing force. This local differentiation allows the outer edge to have sufficient inflow resistance to prevent cracks, while the central portion has reduced inflow resistance to prevent wrinkles.
2Ease of operation
If the joint link and outer cam are positioned far apart to accommodate the mechanism structure, then the device can function, but the relative positional accuracy deteriorates and the risk of damage increases
Solution Approach 1:
The invention merges the joint link and outer cam into a single integrated component. This integration eliminates the distance between the two components, thereby improving relative positional accuracy and reducing the risk of damage due to positional deviations, while still maintaining the necessary functional capabilities of the mechanism.
3Productivity
If the first die set and second die set are simply released from each other after press forming, then the forming cycle is short, but the formed product deforms due to pressure from the movable pad and blank holder
Solution Approach 1:
The invention applies preliminary action by having the joint link and outer cam engage before the release is complete. This engagement occurs at a timing that prevents the movable pad and blank holder from applying excessive pressure to the formed product during release, thereby preventing deformation while maintaining an efficient forming cycle.
Solution Approach 2:
The invention applies preliminary anti-action by using the joint link and outer cam engagement to counteract the pressing forces from the movable pad and blank holder before release. This engagement creates a restraining force that prevents the formed product from deforming under pressure during the release 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
The solution enhances the durability of the press tooling by improving relative positional accuracy, reducing the risk of damage to the distance member and moving device, and preventing deformation of the formed product during release, thus lowering maintenance costs and improving operational efficiency.
Implementation Method 1
a distance member pivotably supported by the holder; and a moving device provided on the first die unit and configured to cause the distance member to pivot
Implementation Method 2
the moving device includes an elastic member, and the elastic member generates a repulsive force so as to pivot the distance member from the home position toward the preventive position
Data Source
AI summary
A press tooling includes a distance member pivotably supported by a holder; and a moving device provided on a first die unit. The holder is provided in a movable manner with respect to a punch in a press direction, and a pad is provided in a movable manner with respect to a die in the press direction. The distance member is pivotable between a home position in which the distance member does not come into contact with the second die and a preventive position in which the distance between the pad and the holder in the press direction is prevented from being equal to or less than a predetermined distance. As the holder moves relative to the punch in the first direction, the moving device causes the distance member to pivot from the home position toward the preventive position.