EP3529037A1 - Procédé et dispositif pour la fabrication de profilés en matière plastique - Google Patents

Procédé et dispositif pour la fabrication de profilés en matière plastique

Info

Publication number
EP3529037A1
EP3529037A1 EP17791541.0A EP17791541A EP3529037A1 EP 3529037 A1 EP3529037 A1 EP 3529037A1 EP 17791541 A EP17791541 A EP 17791541A EP 3529037 A1 EP3529037 A1 EP 3529037A1
Authority
EP
European Patent Office
Prior art keywords
calibration
profile
plastic
extrusion
cooling 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.)
Withdrawn
Application number
EP17791541.0A
Other languages
German (de)
English (en)
Inventor
Siegfried Pramberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP3529037A1 publication Critical patent/EP3529037A1/fr
Withdrawn legal-status Critical Current

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
    • B29C48/904—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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • 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
    • B29C48/92—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
    • B29C2948/92009—Measured parameter
    • B29C2948/92028—Force; Tension
    • 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
    • B29C2948/92009—Measured parameter
    • B29C2948/92085—Velocity
    • 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
    • B29C2948/92009—Measured parameter
    • B29C2948/92114—Dimensions
    • 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
    • B29C2948/92009—Measured parameter
    • B29C2948/92114—Dimensions
    • B29C2948/92123—Diameter or circumference
    • 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
    • B29C2948/92009—Measured parameter
    • B29C2948/92114—Dimensions
    • B29C2948/92133—Width or height
    • 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
    • B29C2948/92009—Measured parameter
    • B29C2948/92114—Dimensions
    • B29C2948/92152—Thickness
    • 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
    • B29C2948/92009—Measured parameter
    • B29C2948/9218—Weight
    • 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
    • B29C2948/92704—Temperature
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/11—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
    • 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
    • B29C48/255—Flow control means, e.g. valves
    • 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
    • B29C48/256—Exchangeable extruder parts
    • 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
    • B29C48/265—Support structures or bases for apparatus, e.g. frames
    • 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
    • B29C48/266—Means for allowing relative movements between the apparatus parts, e.g. for twisting the extruded article or for moving the die along a surface to be coated
    • 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
    • B29C48/907—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 adjustable calibrators, e.g. the dimensions of the calibrator being changeable

Definitions

  • the invention relates to a method for the production of plastic profiles, in which a starting material is plasticized and shaped in an extruder, then cooled and calibrated in at least one dry calibration unit and at least one calibration tank, and then divided into individual profile sections.
  • Plastic profiles are produced in extrusion lines in which an extruder first ejects a hotter and plastically deformable profile strand, which is then processed in calibration tools into a plastic profile with precisely defined geometrical properties.
  • the setting of such an extrusion line is very complicated, since a large number of parameters have to be defined for the individual tools. These parameters interact in complex ways to give a product with specific properties.
  • the operation of such extrusion lines requires qualified personnel to minimize scrap. Nevertheless, it often happens that undesirable characteristics of the manufactured plastic profile occur due to slightly changed environmental conditions, so that may be produced large quantities of defective plastic profiles, if the need for improved adjustment is not noticed immediately and appropriate corrective measures are not initiated.
  • a challenge in operating an extrusion line is to always meet all minimum profile quality and geometry requirements while minimizing the total weight of the plastic profile to avoid unnecessary material usage.
  • the object of the present invention is to provide a method which makes it possible to automate an extrusion line largely and thus to make it independent of the constant presence of qualified personnel.
  • this is achieved by carrying out measurements continuously downstream of the calibration tank which relate to the geometry and / or the weight of the plastic profile and directly calculating correction values for changing settings in the extruder, the dry calibration unit and / or the Calibration tank can be used.
  • a measurement in the immediate weighing of the profile sections after the separation of the profile strand consists.
  • the weighing of the profile sections thus takes place on the tilting table immediately after the saw or guillotine, which typically divides the endless profile strand into 6 m long profile sections. Since the process of weighing is carried out in the period after a first profile section has been deposited on the tilting table and before the next arrives there, the production process is in no way impaired by the measuring process. It is particularly advantageous that the measurement of the weight takes place at the earliest possible time, so that dead times can be minimized.
  • a significant improvement in automation can be achieved by having a measurement in the determination of the peel force required to convey the plastic profile through the processing line.
  • the caterpillar take-off must exert a pulling force on the profile string sufficient to overcome the resistances in the calibration tools.
  • these resistances depend on the temperature of the extruded profile in the tools and on the geometry of the extruded profile. In this way, information about the conditions in the calibration tool and can be derived practically in real time, which can be taken into account in the control of certain parameters.
  • the determination of the thickness of at least one wall section of the profile sections is used as a measurement.
  • This measurement can preferably be made optically by photographically evaluating the end face of the profile strand which results when separating the profile sections.
  • other measurement methods such as ultrasound measurements, can also be used to determine the thickness.
  • Further measurements may relate to the surface quality, ie gloss or scratch and the color of the plastic profile.
  • the extrusion speed can be used. If the speed of the caterpillar take-off is increased, the wall thickness of the plastic profile will be lower, while at lower speeds, problems with rippling may occur.
  • a particularly differentiated possibility of influencing the profile quality can be achieved in that a correction value relates to the selective cooling of parts of the profile cross section in the region of the extrusion die.
  • a correction value relates to the selective cooling of parts of the profile cross section in the region of the extrusion die.
  • a further preferred possibility of influencing is that, as a correction value, the control of the cooling water flow is taken in individual sections of the dry calibration unit.
  • the control of the cooling water flow is taken in individual sections of the dry calibration unit.
  • a correction value relates to the control of the cooling water flow in at least one section of the calibration tank. Again, it is possible to achieve a targeted influence by dividing the cooling water flow in at least two different circuits that are controlled independently.
  • the flow direction of the cooling water in the at least one cooling circuit is reversible.
  • the cooling water can be selectively guided in both directions through the cooling circuit.
  • the switchover can be switched over both periodically, for example, in each case after 3 minutes, or when it is determined due to an increase in the back pressure in the cooling water circuit that it could have come to a blockage.
  • a switch causes.
  • Such a measure is possible in the solution according to the invention, in particular, if there are several cooling water circuits in a tool, whereby a direct response is given. Also, the temperature differences at the beginning and at the end of the cycle are low, so that the switching brings no significant change in the temperature conditions with it.
  • the position of the calibration table is also continuously measured and correction values are calculated in order to set the height, lateral position and longitudinal position.
  • the current position can be displayed digitally on the terminal to compare with reference points. Any obstacles to changing the position of the calibration table by safety systems should be detected and taken into account. This concerns the space between the extruder and the calibration table and the space between the calibration table and the caterpillar take-off.
  • the present invention also relates to an apparatus for producing plastic profiles in a multi-tool extrusion line in which at least one dry calibration unit and at least one calibration tank are provided downstream of an extruder, which are arranged on a calibration table.
  • This device is inventively characterized in that a control device is provided, which is connected on the one hand with sensors and on the other hand with actuators, change the setting parameters of tools of the extrusion line.
  • a sensor is designed as a balance, which is provided downstream of a separating device in order to weigh the separated profile sections.
  • the weight of the plastic profile is essential global information that is important for the control of the extrusion line.
  • a sensor may be configured to determine the wall thickness in individual regions of the plastic profile.
  • a particularly advantageous embodiment variant of the present invention provides that at least one nozzle plate is arranged on the end face of the extrusion nozzle in order to selectively direct air to predetermined regions of the plastic profile or the exit region of the plastic profile on the extrusion line.
  • several nozzle plates can be distributed around the circumference of the plastic profile in this connection. In this way, a cooling of the plastic profile can be made locally on a particularly fine scale, before it enters the calibration tools.
  • the nozzle plate may be disposed on an end face of a dry calibration unit.
  • nozzle plate is magnetically attached to the extrusion line or dry calibration unit.
  • grooves or projections or the like can on the respective end face. be provided, which ensure a certain position of the nozzle plate.
  • a particular advantage of the magnetic fixing is the fact that assembly, disassembly or change in position of the nozzle plate can also be made during the operation of the extrusion line, when the distance between the extrusion line and the first dry calibration unit is typically very small. This means that the calibration table does not have to be moved when tampering with the nozzle plate.
  • Fig. 1 shows schematically an extrusion line according to the invention
  • Fig. 2 shows a detail of a calibration table includingkalibrierü in one
  • Fig. 5 is an end view of an extrusion die
  • FIG. 6 shows schematically a cooling device installed in the calibration table
  • Fig. 7 shows schematically the water flow in the calibration table and the Kalibrierwerkmaschineen.
  • the extrusion line of FIG. 1 consists of an extruder 1 with an extrusion die la, a calibration table 2 arranged downstream thereof, on which several dry calibration units 3 and several calibration tanks 4 (the calibration tools) are arranged to cool and feed the plastic profile 100 ejected from the extruder 1 calibrate.
  • the calibration tanks 4 are movable on the calibration table 2 in the longitudinal direction to allow rapid adaptation to a different number of dry calibration units 3, since it is desirable that the calibration tanks 4 connect directly to the dry calibration units 3.
  • the plastic profile 100 enters a caterpillar take-off 5 which provides the necessary tensile forces to pull the plastic profile 100 through the calibration tools.
  • a measuring station 6 the plastic profile 100 is measured and then separated in a saw 7 to profile sections 101, which are stored on a tilting table 8.
  • the extrusion line is controlled by a control unit 10, which is connected via control lines 11, 12 with the individual components of the extrusion line.
  • a scale 13 is indicated in the tilting table 8, which determines the weight of each professional labitess 101 and transmitted to the control unit 10.
  • the data about the profile geometry and the like are output from the measuring station 6 to the control unit 10.
  • 15 indicates the nature of this data, namely geometric measurements, color, gloss and scratches.
  • all relevant data of the other components are transmitted in a manner not shown here, such as the withdrawal force applied by the caterpillar take-off 5, measured values of pressure and temperature from the calibration tools, and the like. and above all, identification data with which each tool can be uniquely identified.
  • control unit 10 During operation of the extrusion line, the control unit 10 not only takes over data and issues control commands in order to optimally carry out the extrusion process, but records are also made in a database in order to gain empirical values for subsequent extrusion processes.
  • FIG. 2 shows that the dry calibration units 3 a, 3 b can be set up in a simple manner on the calibration table 2, since only a mechanical connection has to be produced by means of quick-release fasteners 16. All connections are provided on the non-visible support surface on the underside of the dry calibration units 3a, 3b. They interact with connections which are likewise not visible here at the receiving positions of the calibration table 2. There are thus no hoses for connecting the calibration tools 3a, 3b, 4 with the calibration 2 required, which minimizes the risk of confusion or errors.
  • Fig. 3 shows a quick-change system for the extrusion die la, which can be folded away laterally. Through quick fasteners can be used in conjunction with a Preheating the extrusion die la an extremely short cycle time of less than 10 minutes when changing the extrusion die la can be achieved.
  • Fig. 4 the end face of a dry calibration unit 3 is shown, wherein laterally on both sides of the opening 19 through which the plastic profile 100 passes, which is a nozzle plate 18 a, 18 b is magnetically fixed.
  • nozzle plate 18 a, 18 b is magnetically fixed.
  • Several nozzles, not visible here, can be supplied with compressed air via connections 20 in order to selectively cool the plastic profile 100 entering the opening 19. The amount of air is measured to create reproducible conditions. In this way, the wall thickness of the outer regions of the plastic profile 100 can be adjusted individually, and it can the weight of the plastic profile produced with the (meter weight) are precisely controlled.
  • FIG. 4 A similar solution is shown in Fig. 4, in which on the end face of an extrusion die la eight nozzle plates 21a, 21b, 21c, 21d, 21e, 21f, 21g and 21h are also magnetically mounted.
  • the nozzle plates 21a and 21e are directed onto visible surfaces of the plastic profile 100, while the nozzle plates 21b, 21c, 21d, 21f and 21h are directed to extremities which always present a challenge in the extrusion process.
  • FIG. 6 shows a cooling device arranged in the calibration table 2, which cools the general cooling water, which is made available to the extrusion line from the outside, to a lower temperature of, for example, 5 ° C. to 8 ° C. Via a feed line 24 and a return line 25, a distributor 23 is supplied, are fed via the special cooling circuits in the calibration tools.
  • Fig. 7 the general cooling water supply for thetkalibrierüen 3 a, 3 b is shown.
  • the manifold 23 is supplied via a supply line 29 with general cooling water.
  • low temperature water is supplied by the refrigerator 22 as shown above.
  • first supply line 26a with a small cross-section General cooling water is conducted at a first pressure level to specific circuits in the dry calibration units 3a, 3b. Cooling water of low temperature is led to further circuits via a second supply line 26b with a small cross-section. Via a third supply line 26c with a large cross-section, general cooling water is supplied at a further pressure level. Return lines 27, 28 return the used cooling water.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé pour la fabrication de profilés en matière plastique (100), dans lequel une charge d'alimentation est plastifiée et mise en forme dans une extrudeuse (1), puis refroidie et calibrée au moins dans une unité de calibrage à sec (3; 3a, 3b) et au moins dans un bac de calibrage (4) pour être ensuite partagée en segments de profilé (101) individuels. Il est possible de commander de manière optimale la ligne d'extrusion en réalisant, en aval du bac de calibrage (4), des mesures régulières concernant la géométrie et/ou le poids du profilé en matière plastique (100) et en calculant des valeurs de correction directement à partir de ces valeurs de mesure qui seront utilisées pour modifier des réglages dans l'extrudeuse (1), l'unité de calibrage à sec (3; 3a, 3b) et/ou le bac de calibrage (4).
EP17791541.0A 2016-10-19 2017-10-19 Procédé et dispositif pour la fabrication de profilés en matière plastique Withdrawn EP3529037A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50948/2016A AT519314A1 (de) 2016-10-19 2016-10-19 Verfahren zur herstellung von kunststoffprofilen
PCT/AT2017/060274 WO2018071942A1 (fr) 2016-10-19 2017-10-19 Procédé et dispositif pour la fabrication de profilés en matière plastique

Publications (1)

Publication Number Publication Date
EP3529037A1 true EP3529037A1 (fr) 2019-08-28

Family

ID=60191045

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17791541.0A Withdrawn EP3529037A1 (fr) 2016-10-19 2017-10-19 Procédé et dispositif pour la fabrication de profilés en matière plastique

Country Status (5)

Country Link
US (1) US20190255753A1 (fr)
EP (1) EP3529037A1 (fr)
CN (1) CN109843546A (fr)
AT (1) AT519314A1 (fr)
WO (1) WO2018071942A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019215876A1 (de) * 2019-10-15 2021-04-15 Greiner Extrusion Group Gmbh Extrusionsvorrichtung und Extrusionsverfahren
AT523885B1 (de) * 2020-05-25 2024-05-15 Extrunet Gmbh Elektronische Unterstützung zum Ablängen von Profilmustern mit genauer Zuordnung der Extrusions- und Prüfparameter
CN115816692A (zh) * 2023-02-16 2023-03-21 张家港市普瑞塑胶机械有限公司 可降解塑料的造粒生产系统

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3286302A (en) * 1963-12-26 1966-11-22 Industrial Nucleonics Corp Control system for maximizing the production of a material forming process
DE2535286C3 (de) * 1975-08-07 1979-01-25 Dynamit Nobel Ag, 5210 Troisdorf Verfahren zum Kalibrieren einer coextrudierten Profilleiste aus thermoplastischen Kunststoffen
US4137025A (en) * 1977-03-07 1979-01-30 Graves Kenneth E Apparatus for measuring and controlling the wall thickness of plastic pipes
DE3423489A1 (de) * 1984-06-05 1985-12-05 Kunststoff-Verarbeitung GmbH Dirk A. Brügmann, 5800 Hagen Verfahren und vorrichtung zur regelung von strangpressen
IT1185704B (it) * 1985-09-11 1987-11-12 Milani Resine Spa Apparecchiatura automatica per la selezione e la regolazione di barre di profilato in macchine produttrici di profilati plastici estrusi
AT401031B (de) * 1988-11-18 1996-05-28 Cincinnati Milacron Austria Einrichtung zum regeln der wandstärke
US5340295A (en) * 1993-07-19 1994-08-23 The Conair Group, Inc. Vacuum sizing apparatus with controlled vacuum
JPH10296842A (ja) * 1997-04-28 1998-11-10 Sekisui Chem Co Ltd 合成樹脂管材の製造方法
DE59904341D1 (de) * 1998-08-19 2003-03-27 Greiner Extrusionstechnik Gmbh Verfahren zur herstellung von länglichen gegenständen aus kunststoff
US20030132552A1 (en) * 2000-05-18 2003-07-17 Gamble Jonathan D. Process for controlling the manufacturing of dimensionally varying tubular members
AT6407U1 (de) * 2002-12-12 2003-10-27 Technoplast Kunststofftechnik Verfahren zur regelung der vakuumversorgung von kalibrierwerkzeugen
CA2831940A1 (fr) * 2010-03-11 2011-09-15 Smi Service Management Immobilien Gmbh Dispositif pour le reglage precis de la sous-pression

Also Published As

Publication number Publication date
US20190255753A1 (en) 2019-08-22
CN109843546A (zh) 2019-06-04
WO2018071942A1 (fr) 2018-04-26
AT519314A1 (de) 2018-05-15

Similar Documents

Publication Publication Date Title
EP3006186B1 (fr) Dispositif de coextrusion pour produire un film plastique et procédé correspondant comprenant la mesure d'une epaisseur de couche
EP2380724B1 (fr) Dispositif de mesure et procédé de mesure pour une machine de moulage par injection pour l'établissement d'un indice spécifique à la charge
DE2700003A1 (de) Anlage zur herstellung von strangpressprofilen
EP3529037A1 (fr) Procédé et dispositif pour la fabrication de profilés en matière plastique
AT509714B1 (de) Verfahren zum steuern einer kunststoffverarbeitungsmaschine
DE3013184A1 (de) Verfahren und vorrichtung zum extrudieren und formen von thermoplastischem material
EP0776752B1 (fr) Procédé de moulage par soufflage de corps creux en matière thermoplastique
EP1930143A2 (fr) Tête d'injection pour granulateur de barre en plastique
DE69014953T2 (de) Vorrichtung zum Kontrollieren der Schichtdicke von durch Schmelzextrusion hergestellten Folien.
EP0418681B1 (fr) Dispositif de coextrusion
DE19507598C2 (de) Mehrkomponentenextruder
EP2173533A2 (fr) Procédé de réalisation de corps creux moulés par soufflage
EP3658349B1 (fr) Procédé et dispositif pour le contrôle de la fabrication d'un produit extrudé en matière plastique ainsi qu'installation d'extrusion pour l'extrusion d'un produit en matière plastique de ce type
AT519283B1 (de) Verfahren zur herstellung von kunststoffprofilen
AT519313B1 (de) Vorrichtung zur herstellung von kunststoffprofilen
DE4307568C2 (de) Verfahren und Vorrichtung zum Erhitzen und Extrudieren eines Vorformlings
EP4331805A2 (fr) Dispositif et procédé d'extrusion
DE4132032C2 (de) Verfahren und Vorrichtung zum gleichzeitigen kontinuierlichen Herstellen mehrerer Strangprofile
DE19842778A1 (de) Verfahren und Werkzeuganordnung zur Herstellung einer Schlauchfolie
DE3536329C2 (fr)
DE3534734C2 (de) Verfahren zum Steuern einer Mehrextruderanlage
DE10307335B4 (de) Verfahren und Vorrichtung zur Ermittlung der Masseströme
DE102008052611B3 (de) Verfahren zur Herstellung von Kunststoffhohlkörpern durch Blasformen
DE3211728A1 (de) Formvorrichtung und -verfahren fuer kunststoffe
EP3915756B1 (fr) Support électronique destiné au découpage des motifs de profilé à affectation exacte des paramètres d'extrusion et de vérification

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20190515

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20200603