Tool Holder Lock Status Detection in Stretch Blow Molding
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Solution Overview
Problem
Conventional stretch blow molding machines lack efficient and reliable methods for remotely monitoring the locking status of tool holders, particularly in rotary machines, necessitating complex sensor connections and manual or optical verification.
Innovation Solution
A stretch blow molding device with a tool holder featuring a first locking device and an imaging remote optical sensor configured to detect the locking status indicator along a line of sight, eliminating the need for complex sensor connections and enabling remote optical verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional contact switches or manual optical monitoring are used to verify locking status, then the locking status can be detected, but the device complexity increases due to complex sensor connections and cable routing
Solution Approach 1:
The patent replaces mechanical sensor connections and cable routing with a laser-based optical detection system. The laser sensor unit wirelessly communicates locking status information, eliminating the need for physical cable connections between the tool holder and control system, thereby reducing device complexity while maintaining detection precision.
Solution Approach 2:
The patent introduces a laser sensor unit as an intermediary between the locking mechanism and the control system. This intermediary component uses optical fields to transmit information about locking status without requiring direct electrical or mechanical connections, simplifying the overall system architecture.
2Device complexity
If remote optical detection is implemented, then the design complexity is reduced by eliminating complex sensor connections, but the reliability of locking status verification may be compromised
Solution Approach 1:
The patent employs a laser-based optical sensing system that substitutes mechanical contact switches and wired connections with non-contact optical detection. This maintains reliability by providing accurate locking status verification through optical field interactions while eliminating the complexity of cable routing and sensor connections.
Solution Approach 2:
The laser sensor unit creates an optical copy or representation of the locking status by detecting the position of locking elements through laser illumination and reflection. This optical copying mechanism reliably transmits locking information without physical contact, maintaining verification accuracy while simplifying the system design.
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 allows for reliable and simplified remote optical verification of the locking status, reducing design complexity and enhancing operational efficiency in rotary stretch blow molding machines.
Implementation Method 1
an imaging remote optical sensor is associated with the first locking device, wherein the imaging remote optical sensor is arranged on a line of sight to the first closing status indicator and is configured to perform remote optical detection of the first locking status indicator at the first locking position along the line of sight
Data Source
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AI summary
The invention relates to a stretch blow molding device with a tool holder for receiving a forming tool for stretch blow molded articles, wherein the tool holder has a first locking device for locking a received forming tool, wherein the first locking device can be activated by moving it from an open position to a locked position, the forming tool is locked in the tool holder in the locked position, and a first closing status indicator of the first locking device is arranged at a first locking position in the locked position, wherein an imaging remote optical sensor is associated with the first locking device, wherein the imaging remote optical sensor is arranged on a line of sight to the first closing status indicator and is configured toThe invention relates to the remote optical detection of the first locking status indicator at the first locking position along the line of sight. Furthermore, it relates to a stretch blow molding machine and a method for checking the holding state of a mold tool.