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Parison forming device

A technology for forming molds and blanks, which is applied in the field of parison forming devices, can solve the problems of foreign matter being drawn in, and achieve the effect of improving airtightness and good wall thickness distribution

Inactive Publication Date: 2016-01-06
NIHON YAMAMURA GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, if the pressure of the exhaust air is set high, even foreign matter floating outside the parison forming mechanism 10 will be drawn in.

Method used

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Examples

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Embodiment Construction

[0058] figure 1 The overall structure of the parison molding apparatus which is one Example of this invention is shown.

[0059] The parison forming device of this embodiment is used for forming a glass bottle whose overall wall thickness is thin, especially for forming a parison which is used to form an ultra-lightweight bottle whose lightness index is less than 0.7 and is called It is a glass bottle with carbonated beverage as the content of "gas-containing substance" (Japanese: ガス物). Here, the "lightness index" (referred to as "L value"; refer to the homepage of the Japan Glass Bottle Association) refers to the lightness index obtained by calculating the relationship between the capacity of the bottle and the mass of the bottle (the amount of glass used) using a function. The index of the measure. Specifically, the mass (g) of the bottle is divided by the power of 0.77 of the full capacity (ml) of the bottle, and then multiplied by a coefficient of 0.44 on this basis to ...

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Abstract

A parison forming device comprises: a mold into which gob is introduced; a plunger which enters into the mold and forms a parison from the gob between the mold and the plunger; a cylinder which moves the plunger back and forth with respect to the mold; and a cooling device which introduces air for cooling inside the plunger to cool the plunger. A base end part of the plunger is connected to a distal end part of a piston rod of the cylinder and held with a plunger holding mechanism, the plunger holding mechanism has an adaptor which is connected to the distal end part of the piston rod, and the adaptor is integrally provided with a tubular part which has a fitting hole that fits the tubular outer shape of the base end part of the plunger. The base end part of the plunger is held in a fitted state in the fitting hole of the tubular part, and a connection ring that connects the adaptor and the base end part of the plunger is fitted on the tubular part of the adaptor. The inside of the plunger communicates with an air outlet path through an exhaust path provided in the adaptor, and the air outlet path communicates with an exhaust device which guides the air after cooling into the air outlet path by applying a suction to the air outlet path and discharges the air outside.

Description

technical field [0001] The present invention relates to a parison forming device for forming a parison by inserting a plunger into a molding die into which a blank is introduced. In particular, the present invention relates to a parison forming apparatus suitable for forming ultra-light glass containers. Background technique [0002] In the process of manufacturing containers such as glass bottles, there is a process of forming an intermediate molded product called a "parison". In this step, after a molten glass called a "blank" is guided into a molding die, a plunger is inserted into the molding die from the front end to pressurize the billet, thereby forming a parison. [0003] Figure 12 The structure of the conventional parison forming apparatus used for forming a parison is shown. This parison forming device is composed of a forming die 4, a plunger 1, a cylinder 11 for reciprocating the plunger 1, and the like (for example, refer to Patent Document 1). The forming d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B9/193
CPCC03B9/1934C03B9/1936C03B9/3816C03B9/3825C03B9/3883C03B9/3891C03B9/41C03B9/1932
Inventor 植田光夫和田龙片冈征喜佐藤明宏
Owner NIHON YAMAMURA GLASS CO LTD
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