Dehydration circuit for an electromagnetic processing unit of hollow bodies

Patent metadata

Field	Value
Publication number	US-10836095-B2
Application number	US-201715838649-A
Country	US
Kind code	B2
Filing date	Dec 12, 2017
Priority date	Dec 12, 2016
Publication date	Nov 17, 2020
Grant date	Nov 17, 2020

Abstract

Disclosed is a processing unit for an electromagnetic processing of plastic parisons and including a series of processing modules, each including a hollow housing, a light emitting assembly and a dehydration circuit for preventing each hollow housing from moisture via a dehydrated fluid. The dehydration circuit extends outside the main body, where the circuit can be in fluid communication with a source of pressurized fluid, on which are disposed a fluid dehydration unit and fluid circulation unit for forcing the dehydrated fluid to feed the respective hollow housings.

First claim

The invention claimed is:

1. A processing unit ( 1 ) for an electromagnetic processing of parisons made of plastic, said processing unit ( 1 ) comprising:
a series of adjacent processing modules ( 8 ) individually including:
a main body ( 9 ) comprising a hollow housing ( 15 ),
a light emitting assembly ( 21 ) disposed in said hollow housing and including a plurality of light emitting sources,
a fluidic circuit ( 24 ) provided within the main body ( 9 ) for a thermal regulation of the light emitting assembly ( 21 );

a dehydration circuit ( 59 ) for preventing each hollow housing ( 15 ) from moisture via a dehydrated fluid,
wherein the dehydration circuit ( 59 ) extends outside the main body ( 9 ) where the dehydration circuit can be in fluid communication with a source ( 55 ) of fluid, wherein the dehydration circuit ( 59 ) is provided with fluid dehydration unit ( 57 , 89 ) and with fluid circulation unit ( 55 a , 58 ) for forcing the dehydrated fluid to feed the respective hollow housings ( 15 ).

2. The processing unit of claim 1 , wherein the dehydration circuit ( 59 ) further comprises fluid distribution ducts ( 61 ) disposed for feeding the processing modules ( 8 ) with the dehydrated fluid in parallel.

3. The processing unit of claim 1 , wherein the processing modules with a fluid exhaust circuit ( 8 ) are in fluid communication ( 67 ), for exhausting the fluid downstream the processing modules ( 8 ).

4. The processing unit of claim 3 , wherein the processing modules ( 8 ) are in fluid communication with a fluid recycling circuit ( 69 ), so that said fluid circulates in a closed loop.

5. The processing unit of claim 4 , wherein the fluid recycling circuit ( 69 ), in which said fluid circulates in a closed loop comprises the fluid dehydration unit ( 57 ) and the fluid circulation unit ( 58 ).

6. The processing unit of claim 1 , wherein:
the source ( 55 ) of pressurized fluid delivers the fluid at a first pressure and,
the fluid dehydration unit and the fluid circulation unit comprise a fluid depressurization device ( 89 ) for feeding the respective hollow housings ( 15 ) with said dehydrated fluid at a second pressure lower than the first pressure.

7. The processing unit of claim 1 , wherein the fluid dehydration unit ( 57 ) comprises an air dryer.

8. The processing unit of claim 3 , wherein a fluid moisture measurement device ( 73 ) is disposed on the fluid exhaust circuit ( 67 ) for measuring moisture, downstream the processing modules ( 8 ).

9. The processing unit of claim 1 , wherein:
the light emitting assembly ( 21 ) has a length,
each hollow housing has an upright length with an upper longitudinal end and a lower longitudinal end and,
at least some of the hollow housings ( 15 ) include a first through hole ( 83 ) located near the upper longitudinal end and a second through hole ( 85 ) located near the lower longitudinal end for feeding the first through hole with the dehydrated fluid, and exhausting from the second through hole, said dehydrated fluid, so that the light emitting assembly ( 21 ) is swept with said dehydrated fluid longitudinally.

10. The processing unit of claim 1 , wherein at least some of the hollow housings ( 15 ) have through holes ( 75 , 77 ) located near a common lower end of said hollow housing for respectively feeding it with, and exhausting therefrom, the dehydrated fluid, so that the light emitting assembly ( 21 ) is swept with said fluid from one side.

11. An assembly comprising:
said source ( 55 ) of fluid,
one of a blow molding unit and a stretch blow molding unit ( 91 ) fed from said source ( 55 ) of fluid with a pressurized fluid for blowing said parisons ( 2 ) in said one of the blow molding unit and a stretch blow molding unit and,
the processing unit ( 1 ) of claim 1 .

12. The processing unit of claim 2 , wherein the processing modules ( 8 ) are in fluid communication with a fluid exhaust circuit ( 67 ), for exhausting the fluid downstream the processing modules ( 8 ).

13. The processing unit of claim 12 , wherein:
the source ( 55 ) of pressurized fluid delivers the fluid at a first pressure and,
the fluid dehydration unit and the fluid circulation unit comprise a fluid depressurization device ( 89 ) for feeding the respective hollow housings ( 15 ) with said dehydrated fluid at a second pressure lower than the first pressure.

14. The processing unit of claim 2 , wherein:
the source ( 55 ) of pressurized fluid delivers the fluid at a first pressure and,
the fluid dehydration unit and the fluid circulation unit comprise a fluid depressurization device ( 89 ) for feeding the respective hollow housings ( 15 ) with said dehydrated fluid at a second pressure lower than the first pressure.

15. The processing unit of claim 3 , wherein:
the source ( 55 ) of pressurized fluid delivers the fluid at a first pressure and,
the fluid dehydration unit and the fluid circulation unit comprise a fluid depressurization device ( 89 ) for feeding the respective hollow housings ( 15 ) with said dehydrated fluid at a second pressure lower than the first pressure.

16. The processing unit of claim 4 , wherein:
the source ( 55 ) of pressurized fluid delivers the fluid at a first pressure and,
the fluid dehydration unit and the fluid circulation unit comprise a fluid depressurization device ( 89 ) for feeding the respective hollow housings ( 15 ) with said dehydrated fluid at a second pressure lower than the first pressure.

17. The processing unit of claim 5 , wherein:
the source ( 55 ) of pressurized fluid delivers the fluid at a first pressure and,
the fluid dehydration unit and the fluid circulation unit comprise a fluid depressurization device ( 89 ) for feeding the respective hollow housings ( 15 ) with said dehydrated fluid at a second pressure lower than the first pressure.

18. The processing unit of claim 2 , wherein the fluid dehydration unit ( 57 ) comprises an air dryer.

19. The processing unit of claim 3 , wherein the fluid dehydration unit ( 57 ) comprises an air dryer.

20. The processing unit of claim 4 , wherein the fluid dehydration unit ( 57 ) comprises an air dryer.

Assignees

• Sidel Participations

Inventors

• Feuilloley Guy
• Lahogue Yoann

Classifications

• B29C49/06 Primary

  Injection blow-moulding · CPC title

• B29C49/4285

  Reactive gases · CPC title

• B29C49/0064

  the number of preform manufacturing stations being different to the number of blowing stations · CPC title

• B29B13/024

  Hollow bodies, e.g. tubes or profiles · CPC title

• B29C49/6418

  Heating of preforms · CPC title