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Blowing plant comprising a nozzle provided with a lip sealing joint

A sealing ring and equipment technology, applied in the field of blowing equipment, can solve the problems of high cost and bulky fixing parts

Inactive Publication Date: 2010-05-19
SIDEL PARTICIPATIONS SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The force that the blowpipe must exert on the bearing surface of the mold requires a powerful, bulky and expensive actuator
[0014] In addition, molds and blowpipes must be rigidly fixed to the blowing equipment due to the high forces they are subjected to
Reinforced fixtures are costly, bulky and bulky

Method used

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  • Blowing plant comprising a nozzle provided with a lip sealing joint
  • Blowing plant comprising a nozzle provided with a lip sealing joint
  • Blowing plant comprising a nozzle provided with a lip sealing joint

Examples

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Embodiment Construction

[0032] Hereinafter, as a non-limiting example, the bottom-up approach, in figure 1 Vertical orientation indicated by arrow V in . The plane perpendicular to this direction is called the "horizontal plane".

[0033] Hereinafter, the same, similar or similar components are denoted by the same reference numerals.

[0034] figure 1 Shown is a blowing apparatus 10 for realizing preforms 12 from plastic, such as polyethylene terephthalate (PET), blowing containers, especially bottles.

[0035] Such as figure 1 As shown, the preform 12 has a lower body 14 which here has the shape of a cylindrical tube, the lower end of which is closed.

[0036] The upper end of the preform 12 is open through an upper neck 16, the outer cylindrical surface of which is threaded (not shown). A flange 18 extends radially projecting from the cylindrical outer surface of neck 16 . The flange 18 delimits the neck 16 perpendicularly with respect to the body 14 of the preform 12 .

[0037] The body 14 ...

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PUM

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Abstract

The invention relates to a blowing plant (10) for blowing a pressure medium in a blank (12), especially, a poly ethylene terephthalate container blank, which comprises: a lower mould (12) which is used for receiving the blank (12) and comprises a horizontal top wall (24) with an insert hole (28), trough which a lower neck (16) of the blank (12) is projected; a top nozzle (22) which comprises a pressure medium lower output orifice (34) and is provided with an ring sealing joint (40) arranged under the lower circumference (44) of said output orifice (34) in such a way that a lower circumference(44) of the output orifice (34) surrounds the neck (16) of the blank (12) locating face to a support wall (18, 24), the ring sealing joint (40) is supported on the supporting wall (18, 24) for preventing the pressure medium leakage from the nozzle (22) of the output orifice between the circumference (44) and the supporting wall (18, 24). Said invention is characterised in that the sealing joint (40) is provided with a lower elastic annular lip (48) in such a way that the pressure medium rests on the top face (54) of said lip (48) for pressing the free annular lower edge (58) thereof against the supporting wall (18, 24), thereby ensuring the tightness of the nozzle (22).

Description

technical field [0001] The invention relates to blow molding equipment for blowing a fluid under pressure into preforms. [0002] In particular, the invention relates to blowing equipment for blowing fluid under pressure into preforms for polyethylene terephthalate (PET) containers, having: [0003] - a lower mold for receiving the preform and having a horizontal upper wall with an insertion hole through which an upper neck of the preform protrudes; [0004] - An upper blowpipe with a lower hole for outputting pressurized fluid, said lower hole is used to blow pressurized fluid into the blank through the neck, and has an "O" ring seal, said "O" The sealing ring is arranged under the lower periphery of the discharge hole; [0005] Wherein, the lower periphery of the discharge hole is used for positioning around the preform neck facing a support wall, and the sealing ring is supported on the support wall to prevent pressure fluid from leaking between the lower periphery of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C49/58
CPCB29C2049/5827B29C49/58B29C49/06B29C49/12B29K2067/00B29C2949/0715
Inventor L·达内尔
Owner SIDEL PARTICIPATIONS SAS