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Blow molding device

A technology of blow molding and preforms, which is applied to hollow objects, household components, household appliances, etc., can solve the problems of a large amount of time, long time, and productivity decline, and achieve high productivity, less stagnant parts, and fewer parts. Effect

Active Publication Date: 2017-09-01
DISCMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Here, in the device using the liquid as the pressurized medium as described above, when the pressurized medium is replaced with a different kind of liquid or replaced with air, the process is particularly used to remove the blowing nozzle 104 The flushing of the liquid takes a lot of time
In particular, the blowing nozzle 104 is actually composed of many parts, and requires dismantling→rinsing (cleaning)→reassembly. It takes a long time to start production with the next pressurized medium, which has the problem of causing a decrease in productivity.

Method used

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  • Blow molding device
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Examples

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Embodiment Construction

[0034] Below, according to the embodiment while referring to the attached Figure 1 Embodiments of the present invention will be described below. Figure 1~4 It is a figure for demonstrating one Example of the blow molding apparatus of this invention, and the blow molding method using this apparatus. First, refer to figure 1 with figure 2 , while explaining the overall structure of the device, figure 1 It is an explanatory diagram showing the overall structure of the blow molding device of the present invention, figure 2 will be figure 1 The enlarged cross-sectional view of the main part of the device shown in the longitudinal section near the filling head 4B, for detailed components, refer to figure 2 .

[0035] figure 1 , 2 A state in which the preform 31 is installed in the mold 1 and the tip of the blow nozzle 4 is fitted into the mouthpiece 32 of the preform 31 is shown. The shape of the preform 31 used is a bottomed cylindrical test tube, a mouthpiece 32 ...

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Abstract

A blow molding device comprising a mold (1) for blow molding, and a bottomed cylindrical preform (31) attached to the mold (1) and the preform (31) The blowing nozzle (4) closely connected with the mouthpiece part (32) of the blowing nozzle (4) and the stretching rod (8) inserted in the axial direction of the blowing nozzle (4), by utilizing the stretching rod (8) to The longitudinal stretching of the formed body (31) and the pressurized liquid (L) supplied from the pressurized liquid supply unit (22) provided separately through the blowing nozzle (4) to the preformed body (31) The container (41) is formed by expansion stretching, characterized in that the blowing nozzle (4) has a support portion (4A) supporting the posture of the stretching rod (8) and an axial direction A supply path (Fs) for supplying the liquid (L) to the preform (31) is formed thereon and a filling head (4B) communicating with the mouthpiece (32) of the preform (31) ), connecting the support portion (4A) and the filling head portion (4B) in a vertical direction in a mutually attachable and detachable manner.

Description

technical field [0001] The present invention relates to a blow molding device for a synthetic resin preform using a liquid as a pressurized medium. Background technique [0002] Blow-molded jars made of polyethylene terephthalate (PET) resins (so-called polyester bottles) are being used for jar containers in many ways due to their many excellent properties. This kind of container is usually made by blowing pressurized air into the container while heating the preformed body that has been injection-molded into a bottomed cylindrical shape to a temperature that enables the stretching effect to appear. It is stretched and deformed into an expanded shape by blowing gas into it. [0003] On the other hand, Patent Document 1 describes an invention related to a method of blow molding a preform using a liquid instead of air as a pressurizing medium. In such a molding method, if the content liquid that is finally filled into the product, such as beverages, cosmetics, and pharmaceuti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C49/12B29C49/46
CPCB29C49/12B29C49/46B29C2049/4664B29C49/06B29C49/4289B29C2049/5858B29L2031/7158B29C2049/465B29C2049/5893B29C49/58B29C2949/0715B29D22/003B29L2031/712B29C2049/4602
Inventor 森上茂树田村信之佐藤澄人
Owner DISCMA