Planar Transmitter Module for Injection Moulding Sensor Data

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Solution Overview

Problem

Existing measuring arrangements in injection molding systems face issues with cable damage and contamination during disassembly, leading to high repair costs and limited flexibility in mounting locations due to the need for precise alignment of coupling parts.

Innovation Solution

A transmitter module and receiver module are designed as flat, planar components that can be separated without force, allowing for effortless cleaning and flexible orientation, enabling wireless data transmission via near-field telemetry or point contacts, reducing the risk of damage and contamination.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If cables are used to connect sensor to base plate, then measurement data can be transmitted, but cables can be damaged or torn out during disassembly

Engineering Contradiction:
Improvecable durabilityVSAvoiddisassembly safety
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent extracts the data transmission function from the mechanical cable connection by implementing wireless communication between the sensor in the mold insert and the evaluation device in the base plate. This eliminates the physical cable that causes damage during disassembly while maintaining reliable data transmission capability.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the mechanical cable connection system with an electronic wireless communication system. The sensor transmits measurement data wirelessly to the evaluation device, substituting the mechanical cable interface with an electromagnetic signal transmission approach that eliminates wear and damage issues.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If coupling parts are used on separating surface, then data transmission is enabled, but contamination risk and cleaning difficulty increase

Engineering Contradiction:
Improvedata transmission reliabilityVSAvoidcleaning ease
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent extracts the data transmission interface from the mechanical separating surface by implementing wireless communication. This removes the coupling parts that create contamination pockets and cleaning difficulties, while maintaining continuous data transmission capability during mold operations.

Inventive Principle:
Principle #2Taking out (Extraction)

3Reliability

If coupling parts protrude from tool components, then data transmission is possible, but risk of damage to coupling parts increases

Engineering Contradiction:
Improvedata transmission capabilityVSAvoidcoupling part durability
Core Design Contradiction:
ReliabilityVSStrength

Solution Approach 1:

The patent extracts the data transmission function from the protruding coupling parts by implementing wireless communication between the sensor and evaluation device. This eliminates the protruding components that are vulnerable to damage during mold assembly and disassembly operations.

Inventive Principle:
Principle #2Taking out (Extraction)

4Manufacturing precision

If precise closure is required for coupling parts, then data transmission is ensured, but assembly complexity and risk of damage increase

Engineering Contradiction:
Improveclosure precisionVSAvoidassembly complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent replaces the precision mechanical coupling system with a wireless communication system. The sensor and evaluation device communicate without requiring precise mechanical alignment or closure, significantly reducing assembly complexity and eliminating the risk of damage from improper assembly.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

5Reliability

If conventional transmitter modules are used, then data transmission is possible, but module size is too large for small cavities

Engineering Contradiction:
Improvedata transmission functionVSAvoidtransmitter module size
Core Design Contradiction:
ReliabilityVSVolume of moving object

Solution Approach 1:

The patent merges the transmitter module with the sensor assembly in the mold insert, integrating the data transmission functionality into the existing compact sensor structure. This integration allows the system to function in small cavities where conventional separate transmitter modules would be too large.

Inventive Principle:
Principle #5Merging (Combining)

6Reliability

If conventional transmitter modules are used, then data transmission is possible, but cost is too high for small cavities

Engineering Contradiction:
Improvedata transmission functionVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent merges the transmitter module with the sensor assembly, combining multiple functions into a single integrated component. This integration reduces the overall system cost by eliminating separate expensive components while maintaining reliable data transmission capability for small cavity applications.

Inventive Principle:
Principle #5Merging (Combining)

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 ensures safe, contamination-free, and cost-effective data transmission during disassembly, allowing for flexible module placement and reducing wear and tear, thereby lowering maintenance costs and improving operational efficiency.

Implementation Method 1

enabling wireless data transmission via near-field telemetry or point contacts

Methodology Applied
Scientific EffectNear-field telemetry: Electromagnetic Induction

Data Source

PatentEP2205956B1Measuring arrangement in an injection-moulding system
Publication Date: 2013.07.03 KISTLER HLDG AG
  • EP2205956B1 patent drawingFigure 1~2c
  • EP2205956B1 patent drawingFigure 3a~3b
  • EP2205956B1 patent drawingFigure 3c~3h

AI summary

The invention relates to a measuring arrangement for measuring one or more pressures and/or temperatures in an injection-moulding system, comprising a base plate (2) and at least one mould insert (3) with at least part of a cavity (5), wherein the base plate (2) and the mould insert (3) rest against one another in a releasable manner on at least one common separating surface (6). The mould insert (3) comprises at least one sensor (7) for detecting pressures and/or temperatures as well as a transmitter module (8) on the separating surface (6), which transmitter module is electrically connected to the sensor (7). The base plate (2) comprises a receiving module (9) on the separating surface (6) opposite the transmitter module (8), wherein measurement data can be transmitted from the transmitter module (8) to the receiving module (9) and can be transmitted to an evaluation device which is electrically connected to the receiving module (9). The idea on which the invention is based is that the transmitter module (8) and the receiving module (9) on the separating surface (6) are essentially planar and can be separated without force.