Liquid Blow Molding Container Stabilization
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Solution Overview
Problem
In liquid blow molding, there is a challenge in preventing the spilling of liquids from the mouth part of container bodies when conveying them from the mold to the capping position, which often requires complex manufacturing devices.
Innovation Solution
A method involving liquid blow molding that includes a liquid blow molding step, a placement step where the container body is placed in a cup at the mold opening position, and a conveyance step where the cup holding the container body is moved to a capping position, using a mold with split body molds and a bottom mold to stabilize the container body during conveyance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cap is attached before taking the container body out of the mold to prevent liquid spilling, then liquid spilling is prevented, but the manufacturing device becomes complex
Solution Approach 1:
The cup is prepared in advance at the mold opening position to receive the container body immediately after molding. This preliminary preparation eliminates the need for complex capping devices during conveyance, as the container is already positioned for stable transport from the start
Solution Approach 2:
The cup placement function is extracted from the mold system and implemented as a separate, simple placement step. The mold only needs to open and allow the container to be placed in the cup, rather than integrating complex capping mechanisms into the mold structure
2Ease of manufacture
If the container body is conveyed without support to the capping position, then the manufacturing process is simplified, but liquid spilling occurs from the mouth part
Solution Approach 1:
The cup serves as an intermediary device between the mold and the capping position. It provides simple support and stabilization during conveyance without requiring complex manufacturing processes, effectively preventing liquid spilling while maintaining ease of manufacture
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 method reduces the likelihood of liquid spilling from the mouth part during conveyance and eliminates the need for complex capping devices before the container body is removed from the mold.
Implementation Method 1
a liquid blow molding step of supplying a pressurized liquid to inside of a preform placed in a mold, and molding the preform into a container body containing the liquid
Data Source
Figure 1
Figure 2
Figure 3A~3D
AI summary
A method of manufacturing a container by liquid blow molding comprises: a liquid blow molding step (S1) of supplying a pressurized liquid to inside of a preform (PF) placed in a mold (2), and molding the preform (PF) into a container body (3) containing the liquid; a placement step (S2) of placing the container body (3) in a cup (4) for containing a bottom part of the container body (3), at a mold opening position (B) of the mold (2); and a conveyance step (S3) of conveying the cup (4) holding the container body (3) from the mold opening position (B) to a capping position (C).