Hot Press Assembly with Conductive Inserts for Brake Pad Manufacturing
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Solution Overview
Problem
Existing hot press assemblies for manufacturing brake pads face challenges in controlling temperature variability and heat distribution, leading to inconsistencies in the hardness and compressibility of brake pads.
Innovation Solution
Incorporating thermally-conductive inserts in the upper die plate and punches of the hot press assembly, which allows for uniform heat distribution and reduced temperature variability by connecting the heat platen's heating elements to the upper die plate and punches through bridge and conductive inserts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional hot press assembly is used without thermally-conductive inserts, then the structure is simpler, but temperature variability and heat distribution are poor leading to inconsistent brake pad quality
Solution Approach 1:
The patent introduces thermally-conductive inserts (bridge inserts in the upper die plate and conductive inserts in the punches) as intermediary elements to transfer heat from the heating elements to the pressing surfaces. These inserts act as thermal mediators that improve heat distribution and reduce temperature variability, directly addressing the manufacturing precision issue while adding minimal structural complexity.
Solution Approach 2:
The patent modifies the thermal parameters of the hot press assembly by incorporating materials with high thermal conductivity into the inserts. This changes the heat transfer characteristics of the system, enabling more uniform temperature distribution across the upper die plate and punches, thereby improving brake pad consistency without fundamentally altering the assembly structure.
2Stability of the object's composition
If thermally-conductive inserts are added to improve heat distribution, then temperature stability improves, but the device complexity increases
Solution Approach 1:
The thermally-conductive inserts serve as intermediary components that stabilize temperature transmission from the heating elements to the working surfaces. By positioning these inserts at critical heat transfer points (upper die plate and punches), the system achieves temperature stability without requiring complex thermal management systems throughout the entire assembly.
Solution Approach 2:
The patent applies thermal conductivity enhancement locally rather than throughout the entire assembly. The thermally-conductive inserts are strategically placed only in the upper die plate and punches where heat distribution is most critical for brake pad quality, thereby achieving temperature stability with minimal added complexity.
3Temperature
If heating elements are directly connected to the upper die plate without bridge inserts, then the structure is simpler, but heat distribution uniformity is poor
Solution Approach 1:
The patent divides the upper die plate into multiple sections, each equipped with its own bridge insert and heating element. This segmentation allows independent thermal control of different regions, enabling uniform heat distribution across the entire die plate surface while maintaining a relatively simple overall structure through modular design.
Solution Approach 2:
The bridge inserts provide localized thermal enhancement at specific points in the upper die plate where heat transfer is needed. This local quality approach ensures uniform heat distribution without requiring the entire die plate to be made of high-conductivity material, thus balancing heat uniformity with structural simplicity.
4Manufacturing precision
If punches are made without conductive inserts, then the punch structure is simpler, but temperature variability during pressing is high
Solution Approach 1:
The conductive inserts within the punches act as internal thermal mediators that distribute heat from the punch exterior to the pressing surface. This ensures consistent temperature at the friction material interface, improving brake pad property consistency while adding only minimal internal structure to the punches.
Solution Approach 2:
The patent changes the internal thermal parameters of the punches by embedding conductive inserts. This modifies the heat conduction pathway within the punches, reducing temperature variability during the pressing operation and improving manufacturing precision without significantly complicating the punch structure.
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 solution results in brake pads with consistent hardness and compressibility values, maintaining operational temperature stability across multiple manufacturing cycles, and improving the physical properties of the brake pads.
Implementation Method 1
a heat platen including a plurality of heating elements extending through the heat platen
Implementation Method 2
each conductive insert is further aligned with and is operably connected to a particular one of the bridge inserts of the upper die plate, such that, together, the conductive inserts and the bridge inserts provide a path by which any heat present in the heat platen and its associated heating elements can travel and then be distributed throughout the upper die plate and throughout each of the punches
Data Source
AI summary
A hot press assembly is provided that comprises an upper die plate having a first surface and a second surface opposite the first surface. The hot press assembly further includes a punch with an attachment surface that is positioned adjacent to the second surface of the upper die plate and a pressing surface that is positioned opposite the attachment surface. The hot press assembly also includes one or more conductive inserts that extend through the punch from the attachment surface to a predetermined distance away from the pressing surface, where each conductive insert has a thermal conductivity greater than a thermal conductivity of the punch. Methods of manufacturing a brake pad using the hot press assembly are also provided.