Sintering Press Vacuum Fixation to Prevent Pad-Induced Misalignment
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Solution Overview
Problem
Existing sintering processes face issues where connection partners can adhere to the pressure pad or plastic film, leading to misalignment and lifting of components during the sintering process.
Innovation Solution
A sintering press equipped with a suction-fixing installation and compression piece that allows for the secure fixation of the first connection partner using negative pressure through suction openings, ensuring precise alignment and compression of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a plastic film portion is disposed between the pressure pad and the connection partners during pressure impingement, then the connection partners are protected from direct contact with the pressure pad, but the connection partners can adhere to the plastic film and be lifted conjointly with the pressure pad when it is lifted
Solution Approach 1:
The suction-fixing installation acts as an intermediary between the connection partners and the pressure pad, providing a third attachment point that prevents the connection partners from adhering to the plastic film. By suctioning the connection partners to the suction-fixing installation, the system creates a stable reference frame that maintains alignment even when the plastic film is present during pressing.
Solution Approach 2:
The suction-fixing installation applies a preliminary fixing action before the pressure impingement occurs. By suctioning the connection partners to the suction-fixing installation in advance, the system prevents the harmful adhesion effect from occurring, counteracting the potential lifting and misalignment that would result from adhesion to the plastic film.
2Strength
If the compression piece and suction-fixing installation are converged to compress the connection partners, then the sintered connection is formed, but the connection partners may adhere to the pressure pad or plastic film causing misalignment
Solution Approach 1:
The suction-fixing installation serves as a mediator that maintains the position and orientation of the connection partners during the compression process. By providing a suction-based attachment point, it ensures that the connection partners remain properly aligned while the sintered connection is being formed between them.
Solution Approach 2:
The suction openings are strategically positioned on the suction-fixing installation to provide localized fixation points on the connection partners. This local quality approach ensures that the connection partners are held firmly at specific points, maintaining their alignment and orientation during the compression process without affecting the overall sintering operation.
3Device complexity
If no suction-fixing installation is used, then the device complexity is reduced, but the connection partners cannot be reliably fixed and may be altered in position and orientation
Solution Approach 1:
The suction-fixing installation utilizes pneumatic principles by employing suction openings that create negative pressure to hold the connection partners. This pneumatic fixation mechanism provides reliable attachment without requiring complex mechanical clamping systems, achieving a balance between device complexity and fixation reliability.
Solution Approach 2:
The suction-fixing installation changes the pressure parameter by creating a negative pressure environment through the suction openings. This parameter change enables the connection partners to be reliably fixed to the suction-fixing installation, providing the necessary reliability for maintaining position and orientation during the sintering 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 ensures reliable fixation and alignment of connection partners, preventing misalignment and lifting during the sintering process, enabling efficient and precise production of sintered connections without the need for additional workpiece carriers.
Implementation Method 1
the suction-fixing installation, when the first connection partner is disposed above the first suction openings, by means of generating a negative pressure at the first suction openings, is configured for suctioning the first connection partner and, on account of that, for fixing the latter in relation to the suction-fixing installation
Data Source
AI summary
A sintering press for producing a sintered connection between a first connection partner and a second connection partner disposed thereabove, having a suction-fixing installation for fixing the first connection partner, having a compression piece which is disposed above the suction-fixing installation. The sintering press for producing the sintered connection is configured for converging the compression piece and the suction-fixing installation relative to one another and for mutually compressing the first connection partner and the second connection partner, wherein the suction-fixing installation on the side thereof that faces the compression piece has first suction openings, wherein the suction-fixing installation, when the first connection partner is disposed above the first suction openings, by generating a negative pressure at the first suction openings, is configured for suctioning the first connection partner and, on account thereof, for fixing the latter in relation to the suction-fixing installation. The invention furthermore relates to a pressure sintering method for producing a sintered connection by the sintering press.