Liquid Container Capping Method Preventing Spillage During Conveyance
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Solution Overview
Problem
The manufacturing speed of liquid-containing containers is hindered by the tendency for liquids to spill when thinner container bodies are conveyed from mold to capper, necessitating a method to enhance handling efficiency without spilling.
Innovation Solution
A manufacturing method utilizing liquid blow molding, an intermediate conveying device, and a rotary capper, where container bodies are gradually accelerated to a third velocity and conveyed to a rotary conveying machine, allowing synchronized delivery and capping while maintaining constant velocities and pitches to prevent spilling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If container bodies are conveyed faster from mold to capper, then manufacturing speed is improved, but liquid spillage increases
Solution Approach 1:
The cap is attached to the container body before the container is fully filled with liquid. This preliminary capping action prevents liquid spillage during subsequent handling and conveyance operations, allowing faster manufacturing speeds without the risk of spilling
Solution Approach 2:
The manufacturing process is divided into distinct stages: first forming the container body, then capping it, and finally filling it with liquid. This segmentation allows each operation to be optimized independently, with capping performed when the container is still stable and empty
2Loss of substance
If container bodies are made thinner, then material usage is reduced, but liquid spillage tendency increases
Solution Approach 1:
By capping the container body before filling it with liquid, the invention ensures that even thin-walled containers will not spill during conveyance. The cap provides structural support and seals the opening, allowing thinner materials to be used without compromising spill prevention
3Loss of time
If container bodies are conveyed without gradual acceleration, then conveying time is reduced, but liquid spillage occurs
Solution Approach 1:
The cap is attached to the container body before conveying operations begin. This preliminary capping allows the container to be conveyed more quickly and with less careful acceleration control, since the cap prevents spillage even during rapid movements
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 improves manufacturing speed by reducing the likelihood of liquid spillage and enabling continuous conveyance, thus enhancing the efficiency of the container production process.
Implementation Method 1
a pressurized liquid is supplied into a preform disposed in a cavity of a mold for liquid blow molding to mold the preform into a container body
Data Source
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AI summary
In a manufacturing method of a liquid containing container, a capper (7) has a container holding portion (7a) configured to be displaced at a constant first velocity (VI) in the circumferential direction of a first central axis (7b), the method including: a liquid blow molding step of molding a preform (1) disposed in a cavity (4) of a mold (3) into a container body (5) having a barrel containing a liquid; an intermediate conveying step of, after the mold (3) is opened, gradually accelerating the container body (5) to a third velocity (V3) and delivering the container body (5) to a carrier (6a) of a rotary conveying machine (6) by an intermediate conveying device; a rotary conveying step of conveying the container body (5) and delivering the container body (5) to the container holding portion (7a) by the carrier (6a) of the rotary conveying machine (6); and a capping step of attaching a cap while the container body (5) is conveyed by the container holding portion (7a).