EP2544872A1 - Device for precisely controlling negative pressure - Google Patents
Device for precisely controlling negative pressureInfo
- Publication number
- EP2544872A1 EP2544872A1 EP11713716A EP11713716A EP2544872A1 EP 2544872 A1 EP2544872 A1 EP 2544872A1 EP 11713716 A EP11713716 A EP 11713716A EP 11713716 A EP11713716 A EP 11713716A EP 2544872 A1 EP2544872 A1 EP 2544872A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vacuum
- negative pressure
- line
- control
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/901—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
- B29C48/903—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies externally
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92514—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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92923—Calibration, after-treatment or cooling zone
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/904—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article using dry calibration, i.e. no quenching tank, e.g. with water spray for cooling or lubrication
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/905—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article using wet calibration, i.e. in a quenching tank
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9115—Cooling of hollow articles
- B29C48/912—Cooling of hollow articles of tubular films
- B29C48/913—Cooling of hollow articles of tubular films externally
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
- B29C48/915—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means
- B29C48/916—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means using vacuum
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
Definitions
- the invention relates to a device for precise regulation of the negative pressure in tools for calibrating extruded plastic profiles with at least one vacuum pump, a vacuum container and a control valve for adjusting the negative pressure in the calibration tool.
- the present invention relates to an improved system for automated precise control of the vacuum supply of calibration tools and automated adjustment of the amount of water to the actual need to achieve the required cooling performance in the production of plastic profiles in the extrusion process.
- Calibration tools for plastic profiles are used for defined cooling and molding of extruded profile formed in an extrusion die and comprise at least one dry calibration tool and at least one calibration tank (wet caliber), which can also be set under vacuum, but with a deviating from thekowskikalibrierwerkmaschinemaschinection level.
- at least one vacuum pump is provided which is connected to the calibration tool and the vacuum level in the dry caliber or in the calibration tank is regulated to the preselected desired value by means of a control valve.
- Object of the subject invention is to reliably avoid these disadvantages and to describe a system with which a much lower energy consumption can be achieved while improved control behavior.
- this object is achieved in that the vacuum is generated in a central vacuum container according to the respective requirement, the vacuum pump being power-controlled over a wide range.
- the can and controllable valves are provided between the central vacuum container and the vacuum consumer. These controllable valves are preferably designed as servo valves, which receive a setpoint specification and perform a permanent pressure balance by means of a sensor line between the actual pressure and target pressure.
- the discharge of the cooling water takes place separately from the vacuum.
- the vacuum is generated by a power-controlled vacuum pump whose speed is automatically adapted to the current situation. This creates a closed system with a very low energy consumption, which is reduced by approx. 50% - 90% compared to conventional systems is lower.
- Fig. 1 shows schematically an extrusion line from the side with the device according to the invention
- Fig. 3 an extrusion line from above
- Fig. 4 is a detail of the level control in the wet caliber in
- Fig. 5 shows another embodiment of an extrusion plant in side view with a water level control in the wet caliber.
- a plastic profile 1 is initially guided, as usual, through dry caliber tools 2, 2 'and then through one or more wet caliber (tools) 3.
- Vacuum pumps 7, which are connected to a vacuum container 8 generate the required negative pressure.
- Control valves 4, 4 ' are connected via suction lines 6, 6' to the dry caliber tools 2, 2 'or to the calibration tank (wet caliber) 3, in order to produce the necessary negative pressure for calibration inside these components.
- the control lines 5, 5' are used to detect the actual pressures for the servo valves and by means of the control to calibrate the setpoints.
- a cooling water system 10, 10 'within the extrusion system 12 is provided in a manner known per se.
- the tool system is constructed on the tool carrier 13 of the extrusion system 12. From the wet caliber 3, the cooling water, which is supplied via the supply opening 10 ', sucked by means of the water suction 11.
- Fig. 5 shows a further embodiment of a water level control, consisting of the water suction line 11, an intermediate tank 17, which with Vacuum is supplied from the vacuum container 8 by means of the supply line 15 and the continued water suction line 16, by means of which the refluxing cooling water is sucked into the vacuum container 8.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0039410A AT508926B1 (en) | 2010-03-11 | 2010-03-11 | DEVICE FOR REGULATING THE UNDERPRESSURE IN CALIBRATION TOOLS |
ATA757/2010A AT511550B1 (en) | 2010-05-04 | 2010-05-04 | DEVICE FOR REGULATING THE COMPRESSION IN CALIBRATION TOOLS |
PCT/EP2011/053701 WO2011110665A1 (en) | 2010-03-11 | 2011-03-11 | Device for precisely controlling negative pressure |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2544872A1 true EP2544872A1 (en) | 2013-01-16 |
Family
ID=44151852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11713716A Ceased EP2544872A1 (en) | 2010-03-11 | 2011-03-11 | Device for precisely controlling negative pressure |
Country Status (4)
Country | Link |
---|---|
US (1) | US20130037291A1 (en) |
EP (1) | EP2544872A1 (en) |
CA (1) | CA2831940A1 (en) |
WO (1) | WO2011110665A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT519314A1 (en) * | 2016-10-19 | 2018-05-15 | Pramberger Siegfried | METHOD FOR PRODUCING PLASTIC PROFILES |
AT519283B1 (en) * | 2016-10-19 | 2019-03-15 | Stadlhuber Thomas | METHOD FOR PRODUCING PLASTIC PROFILES |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3301556A1 (en) * | 1983-01-19 | 1984-07-19 | Battenfeld Extrusionstechnik GmbH, 4970 Bad Oeynhausen | Device for calibrating extruded plastics profiles |
EP0253064A3 (en) * | 1986-07-08 | 1988-10-26 | AVS Ing. J.C. Römer GmbH | Diaphragm valve for fluids |
US5008051A (en) * | 1989-03-01 | 1991-04-16 | Decoursey Robert T | Vacuum sizing tank with electronically controlled vacuum pressure |
US5340295A (en) | 1993-07-19 | 1994-08-23 | The Conair Group, Inc. | Vacuum sizing apparatus with controlled vacuum |
DE19723081A1 (en) * | 1997-06-02 | 1998-12-03 | Gealan Tanna Fenster Systeme G | Unit separating air-water mixture used in cooling calibration blocks for plastic extrusions |
AT6407U1 (en) | 2002-12-12 | 2003-10-27 | Technoplast Kunststofftechnik | METHOD FOR REGULATING THE VACUUM SUPPLY OF CALIBRATION TOOLS |
-
2011
- 2011-03-11 WO PCT/EP2011/053701 patent/WO2011110665A1/en active Application Filing
- 2011-03-11 EP EP11713716A patent/EP2544872A1/en not_active Ceased
- 2011-03-11 CA CA2831940A patent/CA2831940A1/en not_active Abandoned
- 2011-03-11 US US13/634,126 patent/US20130037291A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2011110665A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2011110665A1 (en) | 2011-09-15 |
US20130037291A1 (en) | 2013-02-14 |
CA2831940A1 (en) | 2011-09-15 |
CN102933368A (en) | 2013-02-13 |
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