WO2008006407A1 - Dispositif destiné à l'alimentation en air périodique ou cyclique de machines à haute pression - Google Patents
Dispositif destiné à l'alimentation en air périodique ou cyclique de machines à haute pression Download PDFInfo
- Publication number
- WO2008006407A1 WO2008006407A1 PCT/EP2006/064278 EP2006064278W WO2008006407A1 WO 2008006407 A1 WO2008006407 A1 WO 2008006407A1 EP 2006064278 W EP2006064278 W EP 2006064278W WO 2008006407 A1 WO2008006407 A1 WO 2008006407A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- filter
- pressure
- main
- air
- Prior art date
Links
- 230000000737 periodic effect Effects 0.000 title claims abstract description 5
- 238000000071 blow moulding Methods 0.000 claims abstract description 19
- 238000007664 blowing Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 11
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 235000011187 glycerol Nutrition 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims 1
- 230000003584 silencer Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 description 5
- 238000013022 venting Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 150000002314 glycerols Chemical class 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/048—Arrangements for compressed air preparation, e.g. comprising air driers, air condensers, filters, lubricators or pressure regulators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
- B29C49/783—Measuring, controlling or regulating blowing pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/62—Venting means
- B29C2049/6271—Venting means for venting blowing medium, e.g. using damper or silencer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
- B29C49/783—Measuring, controlling or regulating blowing pressure
- B29C2049/7831—Measuring, controlling or regulating blowing pressure characterised by pressure values or ranges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/4289—Valve constructions or configurations, e.g. arranged to reduce blowing fluid consumption
Definitions
- the present invention relates to a device according to the preamble of claim 1.
- Special valves are used to control the supply rate and pressure.
- different valves and filters are connected to each other via lines, these components being specially selected according to the function assigned to them (main valve, start-up and vent valve).
- a complete supply unit must therefore be composed of several individual components in each case for the specific needs of the respective stretch blow molding machine. This has the consequence that for the construction and maintenance of such a supply unit, a large storage costs must be operated on a variety of components. Further, the effort by each separate connections between the individual components, which are also usually not matched, relatively large. There is just through these many different compounds an increased risk of leaks and not optimal Flow conditions lead to a reduced efficiency of the supply unit.
- valve arrangement in which the main valve and the starting and venting valve are combined in a modular manner in each case a separate valve body, wherein between the two valve bodies, a filter body is still arranged.
- the object of the present invention was to find such a device for air supply in particular of stretch blow molding machines, which has a more compact design and optimized flow conditions.
- a device for periodic resp. cyclic air supply of machines with high pressure and air volume requirement as of hollow blow molding machines resp.
- Stretch blow molding machines comprising a pre-blowing and main blowing process having at least one air inlet for the supply of compressed air and at least one working air outlet for connection to the machine, which further comprises valves for the pre-blowing and main blowing process, a filter and a vent valve, the main valve and the Bleed valve directly communicating with each other in a valve body arranged.
- the valve body is doing with a Filter body, which has the filter and on which the working air outlet is formed coupled.
- valve body as basic housing for different applications and needs appropriately dimensioned functional components such as valves, safety valves, etc. simply integrated resp. can be exchanged.
- the main valve is equipped with an electrically controlled, preferably controlled by solenoid coils, automatic control valve.
- This may, for example, a conventionally constructed 2/2-way valve act.
- the main valve body further advantageously has a safety valve in view of the very high working pressures.
- a pressure switching valve is arranged between the main valve and the control valve, which is connected via a throttle to the control valve.
- the pressure switching valve is designed, for example, pneumatically controllable.
- an electrically controlled valve can be used instead of the pneumatically controlled valve.
- the filter is arranged on the filter body releasably flanged and preferably releasably connected to a condensate drain.
- the condensate drain is preferably designed flanged directly to the filter body.
- Pressure-containing compressed air is usually extremely dried and also has virtually no oil can be removed from the system through the condensate discharged through the filter liquid.
- Actuator operatively connected, preferably an electrically operated control unit.
- This makes it possible to automate the discharge of the liquid collected in the condensate drain.
- This can be done for example by a simple time-controlled control unit, for example by the machine control of the stretch blow molding machine.
- This eliminates complex level measurements in the condensate drain and associated separate switching devices.
- the timing can be adjusted according to the required air flow rate and the average moisture content in the supply are chosen such that the condensate tank is emptied each sure before overfilling. Next is, for example, at the vent outlet of the
- Bleed valve arranged a muffler. This can be a simple way to reduce the noise emission of the vent valve.
- a pressure gauge is arranged on the valve body and / or on the filter body, preferably a glycerol pressure gauge.
- manually operable functional elements can thus be simply set according to the required values. serve.
- it can be automatically set with resp. Regulated function elements whose function is easy to check resp. check.
- the pressure gauge is mechanically protected from the outside in the body is arranged.
- the pressure gauge is arranged, for example, in the interior of the respective component and can be easily read by a formed in the side wall of the corresponding component sight glass or opening.
- the pressure gauge itself is protected against damage from the outside.
- Next is, for example, at the working air outlet of the
- Filter body connected at least one pressure regulator with its own air outlet resp. flanged.
- This designed for example as a proportional valve valve is advantageously electrically controlled and can be fully automatically operated by the machine control. This ensures a regulated air supply to the machine.
- a pressure regulator is designed as a mechanical pressure regulator.
- the pressure regulator can also be used as a dome pressure regulator or
- Proportional pressure regulator be designed according to its intended application.
- a great advantage of the inventive construction of the air supply device is the simple connection of the individual components, which have a defined connection between the flow channels of the individual components.
- this connection can be resp. optimize the transition between the channels in the individual component fluidically, which is advantageous to an increase in the efficiency of the device leads. Further, it will also reduce the noise due to aerodynamically favorable transitions compared to the conventional solution with separate connection channels and different flow cross sections.
- a major advantage of the modular and compact device is the reduction in storage, the flexibility in terms of requirements, the ease of retrofitting to other or new functional elements, the fast configurability and the small footprint.
- a major advantage of the modular and compact device is the reduction in storage, the flexibility in terms of requirements, the ease of retrofitting to other or new functional elements, the fast configurability and the small footprint.
- such a device is very easy to service, compact and has thanks to the flow optimization on a high efficiency. Overall, this leads to a significant cost reduction in the supply of machines with high compressed air demand.
- FIG. 1 shows schematically the view of a device according to the invention
- Fig. 2 shows schematically the view of a
- FIG. 3 shows the functional diagram of the device according to the invention according to FIG. 1.
- Figure 1 shows schematically the view of a erfmdungsgemassen air supply device for a Hohlkorperblasmaschme resp. a stretch blow molding machine, as used for the production of PET bottles from preformed blanks.
- Such an air supply device is arranged between the compressed air supply line and the machine to be supplied with it. That In this device, compressed air 1 is supplied and controlled via the working air outlet 2 of the machine supplied. Since a small volume blank is inflated to a final shape in the machine, a certain portion of the working air is consumed, as a rule. leaded to the now having a larger volume end shape. The high pressure must be released again before removing the final form, which usually takes place via a bleed valve on the blow block itself. At the air supply device also takes place a venting of the still located in the lines overpressure via a vent valve to the air supply device.
- the erfmdungsgemasse air supply device now has on the left side in Ventilkorper 3 an air outlet for the supply of compressed air 1 on.
- the compressed air comes from a conventional compressed air generator (not shown in the figure for clarity), which provides a pressure of typically about 40 bar and a delivery volume of up to 5000 m 3 / h.
- the Ventilkorper 3 is directly connected to a Filterkorper 4, which is arranged to the right of the valve body 3. These Connection takes place for example via a correspondingly formed flange both on the valve body 3 as well as on the filter body 4. This flange can be formed in a conventional manner as a screw with seal. Alternatively, of course, other mechanical connections come into question, which are suitable to record a dense and mechanically stable connection for pressures up to 45 bar.
- the filter body 4 has on its right side the working air outlet 2 to supply the compressed air controlled to the machine (not shown in Figure 1).
- the actual filter housing 5 Projecting downwards from the filter body 4, the actual filter housing 5 is formed, which contains the filter for the compressed air.
- the filter for the compressed air may be a multi-stage filter, which has, for example, passage steps of l ⁇ m, 0. l ⁇ m and O.Ol ⁇ m, and thus is able to reliably filter out even the smallest particles in the compressed air.
- Filter housing 5 collected liquid collected and can be advantageously drained periodically.
- the control of this discharge process can, for example, via the machine control of the stretch blow molding machine clocked in time or via a separate, for example, directly to the condensate drain 6 arranged control unit. 7
- valve body 3 all valve functions are now realized, which are necessary for the execution of Vorblas- and Hauptblasreaes. That means that the Supply of compressed air is controlled so that at the beginning in the Vorblasphase a flat pressure increase takes place and only after reaching a certain pressure threshold, a steep increase in pressure takes place until reaching the working pressure for the main blowing. Typically, this transition occurs at about 20 bar for reaching the maximum pressure of about 45 to 50 bar. Further, in the valve body 3, a vent valve for discharging the remaining pressure in the air supply device after blowing is arranged.
- a manually operated closing valve 9 may be arranged, which allows the manual closing or opening of the compressed air supply 1 to the control valve 8.
- the control valve 8 can be advantageously connected via a pressure switching valve 10 that is connected via an adjustable throttle 11 to the control valve 8, connected to the main valve.
- valve components are arranged in a single valve body 3 and are advantageous as a modular formed exchangeable elements.
- the control valves can also be arranged summarized in a separate control block, which in turn is flanged directly on the valve body 3. It has proved to be advantageous for the operation and maintenance, if this control block resp. the individual control valves 8, 9, 10 are arranged accessible from above on the valve body 3.
- the throttle 11 may also be arranged there, for example.
- valve body 3 is further advantageously equipped with a downwardly facing safety valve 12 to drain if necessary too high pressure at this point.
- a pressure gauge 13 is further arranged, preferably in the form of a glycerin manometer.
- the pressure gauge 13 is advantageously arranged in the interior of the valve body 1, where it is protected against damage from the outside. Only the optical pressure indicator is either visible through a sight glass or out through a corresponding recess in the housing of the valve body 3.
- a further pressure gauge 14 is advantageously arranged in the same manner as the pressure gauge 13 of the valve body 3.
- this device has a very compact construction and the connection of the flow channels of a Component to the next, from the valve body 3 to the filter body 4, can be done fluidically optimized.
- FIG. 2 shows a further embodiment of the present invention is shown schematically.
- this embodiment has the same structure, as already shown in Figure 1 and explained, except that on the right side of the working air outlet 2 is not performed directly in the stretch blow molding, but first in one, resp. two pressure regulator 16, 17 opens and only then in two
- Air outlets 2 'and 2' ' is guided to the stretch blow molding machine.
- pressure regulators 16, 17 are constructed as mechanical pressure regulators, as dome pressure regulators or as proportional regulators. According to the requirements of the stretch blow molding machine, an optimum device based on the same components, the valve body 3 and the filter body 4, can be modularly assembled. The device can also be easily adapted to changing requirements and damaged elements can be easily and quickly replaced.
- FIG. 3 also shows the functional diagram of the embodiment according to FIG.
- the compressed air supply 1 is fed to the main valve 20, whose output is connected to the input of the filter 5 and then opens into the working outlet 2.
- the air supply unit is in the supply line between the main valve 20 and the filter 5 a Entluftungsventil 22 arranged, which let the compressed air to escape from the environment via the muffler 15 during the Ent Kunststoffungsvorgang.
- a safety valve 12 is arranged for pressure protection m the supply line to the main valve 20, to reduce any inadmissible excess pressure.
- the main valve 20 and the Entluftungsventil 22 are controlled by a control block 25 such that the main valve 20 is opened for the blowing process and the Entluftungsventil 22 is closed and for the
- the control block 25 is now constructed such that it both a start-resp. Vorblasrata as well as the main blowing process can export everything through the main valve 20.
- Vorblasrea the pressure with a shallow edge, ie relatively slow, constructed to accelerate the transition to higher pressure with a set flank the filling process.
- a closing valve 9 that is, a manually operated closing valve arranged.
- the pressure supply m the control line for the main valve 20 manually completely resp resp. be switched off.
- a controllable by the control of the machine control valve 8 is arranged.
- This control valve 8 is on the one hand coupled directly to the Ent Kunststoffungsventil 22 and coupled via the throttle 11 to the pressure switching valve 10. So that the air supply device at all works, ie the main valve 20 is actuated controlled, both valves, the closing valve 9 and the control valve 8, must be open. Is one of these two valves 8 resp. 9 closed, so the main valve 20 is closed and the vent valve 22 is opened. Thus, the closing valve 9, for example, act as a manually operated emergency shutdown.
- control block 25 may be formed as a separate module on the valve body 3, which greatly facilitates its maintenance and maintenance.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
L'invention concerne un dispositif destiné à l'alimentation en air périodique ou cyclique de machines à haute pression et forte consommation d'air, telles que des machines à souffler les corps creux ou des machines de soufflage étirage, comprenant au moins une admission d'air pour l'amenée d'air comprimé (1) et au moins un échappement d'air de travail (2) pour le raccordement à la machine. Ce dispositif présente en outre des soupapes pour le processus de pré-soufflage et le processus de soufflage principal, un filtre (5) et une soupape de purge d'air (22), la soupape principale (20) et la soupape de purge d'air (22) communiquant directement l'une avec l'autre dans un corps de soupape (3). Le corps de soupape (3) est couplé à un corps de filtre (4), contenant le filtre (5) et sur lequel l'échappement d'air de travail (2) est réalisé. Tous les composants de soupape sont disposés dans un corps de soupape unique (3) sur un seul côté du corps de filtre (4), le dispositif présentant ainsi une structure très compacte avec des canaux de raccordements courts. De ce fait, la perte de pression globale due au dispositif d'alimentation en air est réduite par comparaison aux dispositifs connus.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2006/064278 WO2008006407A1 (fr) | 2006-07-14 | 2006-07-14 | Dispositif destiné à l'alimentation en air périodique ou cyclique de machines à haute pression |
EP06777788A EP2041439A1 (fr) | 2006-07-14 | 2006-07-14 | Dispositif destiné à l'alimentation en air périodique ou cyclique de machines à haute pression |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2006/064278 WO2008006407A1 (fr) | 2006-07-14 | 2006-07-14 | Dispositif destiné à l'alimentation en air périodique ou cyclique de machines à haute pression |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008006407A1 true WO2008006407A1 (fr) | 2008-01-17 |
Family
ID=37834079
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2006/064278 WO2008006407A1 (fr) | 2006-07-14 | 2006-07-14 | Dispositif destiné à l'alimentation en air périodique ou cyclique de machines à haute pression |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2041439A1 (fr) |
WO (1) | WO2008006407A1 (fr) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3909402A1 (de) * | 1989-03-22 | 1990-09-27 | Schumacher Gmbh & Co Kg | Filter fuer gasfoermige medien |
DE20305232U1 (de) * | 2003-04-01 | 2003-05-28 | Festo AG & Co, 73734 Esslingen | Ventilblock |
EP1548293A2 (fr) * | 2003-12-22 | 2005-06-29 | METAL WORK S.p.A. | Une unité integrée pour le traitement de l'air des systèmes pneumatiques |
EP1566550A2 (fr) * | 2004-02-20 | 2005-08-24 | SIG Technology Ltd. | Dispositif de commande pneumatique |
FR2872082A1 (fr) * | 2004-06-23 | 2005-12-30 | Sidel Sas | Installation de soufflage de recipients en materiau thermoplastique |
-
2006
- 2006-07-14 EP EP06777788A patent/EP2041439A1/fr not_active Withdrawn
- 2006-07-14 WO PCT/EP2006/064278 patent/WO2008006407A1/fr active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3909402A1 (de) * | 1989-03-22 | 1990-09-27 | Schumacher Gmbh & Co Kg | Filter fuer gasfoermige medien |
DE20305232U1 (de) * | 2003-04-01 | 2003-05-28 | Festo AG & Co, 73734 Esslingen | Ventilblock |
EP1548293A2 (fr) * | 2003-12-22 | 2005-06-29 | METAL WORK S.p.A. | Une unité integrée pour le traitement de l'air des systèmes pneumatiques |
EP1566550A2 (fr) * | 2004-02-20 | 2005-08-24 | SIG Technology Ltd. | Dispositif de commande pneumatique |
FR2872082A1 (fr) * | 2004-06-23 | 2005-12-30 | Sidel Sas | Installation de soufflage de recipients en materiau thermoplastique |
Also Published As
Publication number | Publication date |
---|---|
EP2041439A1 (fr) | 2009-04-01 |
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