Blow Molding Suction Circuit Pressure Relief for Scratch-Free Takeout
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In blow molding, the unstable posture of the final molding product during free-fall from an opened split mold can cause scratches, and high-pressure gas entering a suction circuit through product defects may damage the circuit.
Innovation Solution
A blow molding mechanism with a suction circuit that maintains the final product's posture and includes a suppression unit to control suction circuit pressure below a predetermined threshold, using a branch pipe and valve to release excess pressure to the atmosphere.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the final molding product is allowed to free-fall from the opened split mold, then the productivity is improved by simplifying the取出 process, but the manufacturing precision deteriorates due to scratches on the final molding product
Solution Approach 1:
The suction circuit is activated before the split mold opens to maintain the final molding product attached to the bottom mold during the opening process, preventing scratches while enabling safe取出
Solution Approach 2:
The suction circuit acts as an intermediary mechanism between the bottom mold and the final molding product, providing controlled attachment and detachment that prevents direct contact scratches during the取出 process
2Manufacturing precision
If the suction circuit is used to maintain stable posture of the final molding product, then the manufacturing precision is improved by preventing scratches, but the reliability deteriorates due to potential damage from high-pressure gas entering through product defects
Solution Approach 1:
The suppression unit is pre-configured in the suction circuit to limit pressure before high-pressure gas can cause damage, enabling safe use of the suction circuit for posture stabilization
Solution Approach 2:
The suppression unit provides beforehand protection by limiting suction circuit pressure to predetermined levels, cushioning against potential damage from high-pressure gas entering through product defects
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
Reduces the likelihood of suction circuit damage by stabilizing the final product's posture and managing pressure within safe limits, preventing scratches and circuit failure.
Implementation Method 1
a suction circuit that is configured to hold the final molding product by suction force
Implementation Method 2
a suppression unit that limits a pressure in the suction circuit to a predetermined value or lower
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
Provided is a technique capable of reducing a probability in which a suction circuit (40) is damaged in a blow molding mechanism (1) including the suction circuit (40). The blow molding mechanism (1) molds a final molding product by blowing a gas into an intermediate molding product held by a mold (10). The blow molding mechanism (1) includes the suction circuit (40) that suctions the final molding product to attach the final molding product to the mold (10) and a suppression unit (50) that suppresses a pressure in the suction circuit (40) to a predetermined value or lower.