WO2016019948A2 - Procédé servant à fabriquer une mousse à deux composants ou à plusieurs composants aux fins du moussage de cavités ou d'unités/de corps de mise en forme - Google Patents

Procédé servant à fabriquer une mousse à deux composants ou à plusieurs composants aux fins du moussage de cavités ou d'unités/de corps de mise en forme Download PDF

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Publication number
WO2016019948A2
WO2016019948A2 PCT/DE2015/100326 DE2015100326W WO2016019948A2 WO 2016019948 A2 WO2016019948 A2 WO 2016019948A2 DE 2015100326 W DE2015100326 W DE 2015100326W WO 2016019948 A2 WO2016019948 A2 WO 2016019948A2
Authority
WO
WIPO (PCT)
Prior art keywords
dosing
circulation
pump
component
mixing head
Prior art date
Application number
PCT/DE2015/100326
Other languages
German (de)
English (en)
Other versions
WO2016019948A3 (fr
Inventor
Torsten HÖLZEL
Thomas BRANDLER
André PUSCH
Original Assignee
ATN Hölzel GmbH
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 ATN Hölzel GmbH filed Critical ATN Hölzel GmbH
Priority to DE112015003583.4T priority Critical patent/DE112015003583A5/de
Publication of WO2016019948A2 publication Critical patent/WO2016019948A2/fr
Publication of WO2016019948A3 publication Critical patent/WO2016019948A3/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/76—Mixers with stream-impingement mixing head
    • B29B7/7615—Mixers with stream-impingement mixing head characterised by arrangements for controlling, measuring or regulating, e.g. for feeding or proportioning the components
    • B29B7/7626—Mixers with stream-impingement mixing head characterised by arrangements for controlling, measuring or regulating, e.g. for feeding or proportioning the components using measuring chambers of piston or plunger type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/58—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter preventing deposits, drying-out or blockage by recirculating the fluid to be sprayed from upstream of the discharge opening back to the supplying means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
    • B05B7/28—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid
    • B05B7/32—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid the fed liquid or other fluent material being under pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B29B7/60—Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material
    • B29B7/603—Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material in measured doses, e.g. proportioning of several materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B29B7/72—Measuring, controlling or regulating
    • B29B7/728—Measuring data of the driving system, e.g. torque, speed, power, vibration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7404—Mixing devices specially adapted for foamable substances
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7404—Mixing devices specially adapted for foamable substances
    • B29B7/7433—Plants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/76—Mixers with stream-impingement mixing head
    • B29B7/7615—Mixers with stream-impingement mixing head characterised by arrangements for controlling, measuring or regulating, e.g. for feeding or proportioning the components
    • 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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
    • B29C67/246—Moulding high reactive monomers or prepolymers, e.g. by reaction injection moulding [RIM], liquid injection moulding [LIM]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/02—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
    • G01F11/021—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type
    • G01F11/023—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type with provision for varying the stroke of the piston
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/02—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
    • G01F11/021—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type
    • G01F11/029—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type provided with electric controlling means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
    • B05B9/0413—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material with reciprocating pumps, e.g. membrane pump, piston pump, bellow pump
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/76—Mixers with stream-impingement mixing head
    • B29B7/7663—Mixers with stream-impingement mixing head the mixing head having an outlet tube with a reciprocating plunger, e.g. with the jets impinging in the tube
    • B29B7/7684—Parts; Accessories
    • B29B7/7689—Plunger constructions
    • B29B7/7694—Plunger constructions comprising recirculation channels; ducts formed in the plunger
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/82—Heating or cooling
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/18—Filling preformed cavities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material

Definitions

  • Process for producing a two-component or multicomponent foam for foaming cavities or forming units / bodies Process for the preparation of a two-component or multi-component foam for filling cavities or forming units / bodies, in particular for
  • dosing pumps or hydraulic dosing units are used for the application, which each have disadvantages.
  • the high-pressure pumps used for dosing for the application are known, for example, as axial piston pumps or gear pumps.
  • Their disadvantage is that they are subject to high wear and also can dose only very inaccurate. In addition, the wear causes the inaccuracy to increase with the progress of use.
  • the hydraulic dispensers have the disadvantage that they can indeed work accurately, but have a very poor response. The low one
  • a method for the production of moldings from reactive plastics in a device in which the device reservoir for the reactive components, a mixer for the mixing of the reactive components, metering units and lines for the metering of the reactive components from the storage containers in comprises the mixer and wherein at least one of the reactive components are associated with two Dosierkolbenaggregate, each having a metering piston and each one of the metering piston associated spindle unit with a spindle and a spindle nut, wherein the spindle nuts are driven by a torque motor, and in which the reactive components are metered into the mixer and mixed there to form a reactive mixture, and the reactive mixture is subsequently discharged from the mixer into a mold or on a substrate and cured there wherein the two Kolbendosieraggregate operated so that a continuous stream of reactive mixture is discharged from the mixer.
  • EP 2 461 964 A1 describes a device for the mechanical processing of polymeric reaction systems with at least two components under high pressure with only one pressure piston and optionally several
  • a disadvantage of the solution with high-pressure stations is the rather inaccurate dosage (about 10-20% result tolerance) and high inertia due to long conduction paths to the mixing head. This particularly affects the control behavior.
  • the object of the invention is therefore to provide a method for
  • volumenkolbendosier erritt as dosing a highly accurate component output to the mixing head and is output from this.
  • This high-precision metering of the components takes place via the respective existing filling quantity of the metering irrespective of the level of the metering device and the
  • valves are present, so that the application pressure between the Volumenkolbendosier he remains stable as a metering and mixing head or changes only in a controlled manner on the application pressure reduction in the circulation is avoided.
  • the method using the arrangement can be used for foaming cavities, preferably for introducing acoustic foams in vehicle bodies and the vehicle
  • Foam molds used to make seats, seats and center armrests This can be individually and flexibly different
  • the circulation of the components is important if necessary.
  • the promotion of the components for the circulation and filling of the dosing is done advantageously by means of a
  • the pump can be independent of the condition or of the
  • a metering inlet valve for the circulation and filling of the metering open and for the
  • the metering inlet valve not mandatory. The use of this, however, allows easy use of the method.
  • the metering inlet valve can be designed as a one-way valve or overflow valve, whereby the connection to the control is more of a monitoring. If the overflow valve is adjustable, the adjustment can preferably be realized by means of the control.
  • the promotion of the components for the circulation and / or filling of the dosing by means of the dosing he s and / or the pump, wherein in the connection between the reservoir and the dosing he takes place, preferably between the pump and the dosing unit
  • Dosing he inlet valve and the dosing huislassventil are connected to the controller.
  • connection to the controller also serves one more here
  • the setting can preferably also be realized by means of the control.
  • the one-way valve or overflow valve has the advantage that when conveying by the delivery pressure, the valve lock is overcome, so that the promotion trouble-free
  • Cycle times can offer benefits. This type of promotion can be used, for example, as a backup if the pump fails or is switched off on schedule. This type of promotion is rather slow, so that the cycle times are longer or are.
  • shut-off valve is opened and for the application in the circulation connection between the mixing head and the reservoir, the shut-off valve
  • Circulation break can also be used mixing heads, which do not possess this interruption and enable the circulation through a simple passage. With the shut-off valve, the pressure loss, which would be given by a further functioning circulation, during the application in the direction of reservoir safely prevented t.
  • the circulation of the components is maintained via a circulation bypass.
  • a circulation of the components is ensured during the application and a stagnation of
  • Components can be made even if the pump fails. Thus, the reliability of the implementation of the method and the application arrangement is increased. Small amounts of
  • Components can be nachumblen only through the metering both with and without pressurization of the reservoir. Are the dosing he for the respective
  • the application by means of a robot wherein the control of the application by means of the robot control of the robot takes place.
  • Interfaces between individual controls can be minimized or avoided.
  • a simultaneous control of the robot and the application in real time is possible without varying individual characteristics
  • the connection between the reservoir and the doser with a pressure of 0 bar to 60 bar operated, whereby an energy-saving and insensitive to pressure fluctuations operation with a simpler design structure is possible.
  • This makes it possible to use constructive elements which do not have to have increased compressive strengths.
  • the pressure acting on the reservoir and on the other hand the pressure which the pump for the
  • connection between the doser and the mixing head is advantageous, in particular for the application as a high-pressure connection with the respective
  • the respective application pressure is dependent on the components used.
  • the required application pressure is between 100 bar and 200 bar or between 200 and 350 bar.
  • the application pressure may, for example, also be in a range of 120 bar to 150 bar.
  • a pump valve is provided parallel to the pump, wherein the pump valve at least as a one-way valve and / or
  • Overflow valve is operated from the reservoir to the doser. This makes it possible, regardless of the pump to promote the components by means of dosing ers. This allows an emergency operation with a defective pump or energy-saving operation without a pump. At the same time it is avoided that the components do not enter the reservoir against the circulation.
  • the volume of the metering device for example in the form of a cylinder, is changed by displacement of a piston within the cylinder between a maximum volume up to complete emptying, depending on the specific embodiment, a not belonging to the volume of the metering flow range can remain. It can be highly accurate dosages
  • a metering inlet valve is preferably present, which prevent a pressure reduction in the direction of the reservoir during application should, if not by other process-relevant
  • Metering inlet valve is also with a controller
  • a pump arranged, which facilitates the circulation and the filling of the dosing or faster.
  • volume piston dosing unit enables highly accurate
  • a shut-off valve is arranged in the circulation connection between the mixing head and the reservoir.
  • shut-off valve is also connected to the controller, so that the control can be carried out as needed.
  • a circulation possibility is created, which also circulates the circulation during the application or in the temporal region of the application
  • a separate three-way valve or an inlet valve with the or in the metering he combined or integrated three-way valve so that a component-optimized design is possible.
  • a pump valve is advantageously present in the arrangement parallel to the pump, wherein the pump valve has no or at least one connection with the controller.
  • Fig. 1 is a schematic representation of the arrangement for carrying out the method with pump and without Circulation bypass
  • Fig. 4 is a schematic representation of the arrangement for carrying out the method without a pump and without
  • Fig. 5 is a detail of a pump valve assembly
  • 6 and 7 is a schematic representation of a
  • the respective components are supplied from a respective storage container 1 to a mixing head 3.
  • a mixing head 3 Depending on the mode of operation in the
  • the specific parameters and settings of the components, the Dosier s 2, the mixing head 3 and the reservoir s 1 are detected and adjusted by means of a controller.
  • the conditioning of the components takes place.
  • the storage container 1 is supplied or refueled in accordance with the daily requirement or for process simplification in only small quantities from a component storage 6 with the respective components.
  • This foam can be a polyurethane foam with the
  • Components be isocyanate and polyol. It is possible to use further two- or multi-component foams.
  • volume piston dosing unit as dosing device 2.
  • Doser 2 is, as shown in Figures 6 and 7, driven by an electric motor 15.
  • the electric motor 15 drives via a gear 16 to a threaded spindle 17, on which a threaded spindle 20 axially displaceable
  • Reservoir s 1 moves and in the direction of the respective position of the spindle nut 20 for the maximum or desired filling of the cylinder chamber 19 and thus against the
  • a shut-off valve 9 is also controlled open, so that a component flow from
  • Reservoir 1 via the metering unit 2 to the mixing head and back to the reservoir 1 is made possible.
  • the promotion is interrupted insofar as that the circulation over the dosing he 2, the mixing head 3 and back to the reservoir 1 is interrupted.
  • the shut-off valve 9 is closed, so that the components are conveyed to the mixing head 3 and applied by the control of the dosing device 2.
  • the dosing he 2 is during the circulation
  • Dosing he s 2 provides that the dosing he 2 even with a complete emptying, so a zero percent
  • the components are displaced via the circulation connection 5 to the reservoir 1.
  • Circulation allows. Another mode of operation of the circulation is provided by the doser 2 the
  • a metering huislassventil 11 is present, which in particular prevents the metering device 2 during filling, ie the suction of the respective component,
  • Dosing he inlet valve 8 open. When emptying the Dosiers 2 for further circulation through the doser and when applying the metering huislassventil 11 is opened and that metering he inlet valve 8 is closed.
  • shut-off valve 9 is closed during application and opened when circulating.
  • the respective setting or monitoring of the valves takes over the control.
  • Example for the production of polyurethane foam for example 120-150 bar.
  • heat exchanger 13 are provided, which are arranged at least in the circulation in front of the reservoir 1 and thus the temperature of the components before returning to the reservoir 1 to the
  • Components leading connecting lines are tempered (not shown) and thus acting as a heat exchanger 13 almost completely the temperature of
  • each a dosing he inlet valve 8 available in the connection 4a between the pump 7 and the reservoir 1 and the meter 2 each a dosing he inlet valve 8 available.
  • This dosing he inlet valve 8 is opened for the circulation and filling of the dosing he 2. For the application, however, it is closed.
  • the metering he inlet valve 8 as a controllable valve with the Control connected.
  • the metering he inlet valve 8 is a further concrete embodiment of a
  • Component flow in the direction of circulation is possible and is reliably closed during the application.
  • he inlet valve 8 is at least monitored by the controller.
  • Metering inlet valves 8 and metering outlet valves 11 can also be used as one-way valves or as
  • Run overflow valve The control takes over the monitoring function of the proper
  • Adjustable overflow valves can be adjusted by the control. Depending on
  • a circulation bypass 12 is present.
  • the branch 14 is designed in a specific embodiment as a three-way valve or with two valves, so that it is also possible to flow through this circulation bypass 12 during the regular circulation. Thus, at least during the application, the circulation of the components via the circulation bypass 12 is maintained.
  • This three-way valve or the arrangement of two valves for the branch 14 may also include the metering inlet valve 8, so that there is an optimizing and thereby fully functional implementation of the circulation and promotion and the retention during application.
  • the reservoir 1 is at atmospheric pressure or at a pressure between Atmospheric pressure and 15 bar applied.
  • a pressure of 10 bar which is preferred in a specific exemplary embodiment, it is achieved that during the filling of the dosing device 2 by the dosing device 2 itself, on the one hand, the component flow is promoted and, on the other hand, the dosing device 2 is mechanically relieved during filling.
  • the mechanical structure of the metering device 2 can be simplified, so that when filling the
  • Dosierers 2 the components are not sucked but by means of the delivery pressure, the piston of the dosing he 2 move.
  • the filling of the dosing device 2 by means of the pressurized reservoir s 1 is, depending on the requirement or system configuration, as an exemplary embodiment both for the circulation and for the preparation of the
  • Embodiment of the pressure 13 bar Embodiment of the pressure 13 bar.
  • Dosier ers 2 displaced while filling the cylinder. It is envisaged that the filling of the dosing device 2 by means of the pressure of the reservoir s 1 or by means of the dosing device 2 itself, if in particular for the self-filling of the dosing ERS 2 depending on the structure of the piston of the dosing device 2 both in thrust
  • the pump is a bypass bridging in the form of a valve
  • This bypass type preferably has a non-return or one-way valve or a spill valve.
  • Circulation or component conveyance from the reservoir 1 to the dispenser 2 continue to allow, since the component flow as dosing he promotion or as pressure in the direction of dosing he 2 is maintained.
  • the pump 7 structurally enables the one-sided flow in the direction and thus function-independent component support in the event of a fault allows and does not prevent.
  • Embodiment is parallel to the pump 7 a
  • Pump valve 10 as a one-way valve or controlled valve, it has no or at least a connection to the controller, so that in case of failure without delay the
  • Multiway valve assembly 10 executed.
  • a port A at the connection to the reservoir 1 a port B at the connection to the inlet of the pump 7 and a port C at the connection to the meter 2 and the output of the pump 7.
  • port A is connected to port B for circulation.
  • a connection to or via the port C of the multi-way valve assembly 10 is blocked.
  • the pump 7 can promote the components easily.
  • port A is connected to port C, so that the components by means of the dosing device 2 with or without Pressurization in the reservoir 1 can continue to circulate and that an application is possible.
  • An appropriately configured multi-way valve assembly 10 also has the advantage that thereby at
  • the function of the dosing he inlet valve 8 can be mapped.
  • output B and output C are connected for this purpose.
  • the connection to port A and the reservoir 1 is interrupted.
  • the application pressure would thus not act in the reservoir.
  • the application pressure acts on both ports of the pump 7
  • the connection between the dosing he 2 and the pump outlet and the output C of the multi-way valve assembly 10 is designed as a high-pressure connection.
  • the pump 7 and the output C are the
  • Multiway valve arrangement 10 directly at the entrance of
  • Doser 2 arranged so that the connection is made by means of pressure-tight connections.
  • the respective component volume of the respective dosing device is 2
  • Components can be in a parallel arrangement of two, three or more dispensers 2 for each one
  • Pump outlet is preferably designed as high pressure connection after the respective application pressure.
  • the structural design meets the maximum prevailing pressures. Elaborate pressure lines throughout the structure can be avoided. This results
  • Doser 2 and mixing head 3 are the special holding the application pressure
  • Robot control of the robot The application is carried out using a robot, wherein by the
  • Performance and processing speed of the controller can be increased and thus the process more accurate faster and more reliable.
  • the method with the aid of the arrangement is suitable for the foaming of cavities of Fahrku car bodies, the introduction of acoustic foams in Fahr ku bodies and the foaming molds for the production of seats, seats and center armrests.
  • Figures 1 to 4 each show the schematic structure of an arrangement for carrying out the method and different embodiments.
  • a compound 4a leads from a reservoir 1 to a doser 2.
  • a doser 2 Between the doser 2 and mixing head 3 is a
  • Connection 4b arranged, which as high pressure line for the respective working pressure or application pressure
  • this working pressure is between 60 and 350 bar. From the mixing head 3 performs a shut-off valve 9 a
  • connection 4a in the connection 4a is a pump 7 and before the dosing he 2 a dosing he inlet valve 8 is arranged.
  • Figure 1 shows an arrangement of four components each distributed to two mixing heads 3, wherein a
  • Scaling is provided and the mixing head 3, the four and possibly more or fewer components are performed.
  • the components can each be equal in pairs, which among other things, a redundancy for the application is generated.
  • the pump valve assembly 10 is in a suitably designed or suitable pump 7, which thus the
  • Circulation bypass 12 is arranged.
  • Circulation bypass 12 is in this specific
  • Circulation bypass 12 is also guided directly to the heat exchanger 13 and into the reservoir 1 (not
  • Branch 14 executed together in a three-way valve combined.
  • the circulation is achieved during the application, on the other hand is
  • connection 4a is a

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

L'invention concerne un procédé servant à fabriquer une mousse à deux composants ou à plusieurs composants aux fins du moussage de cavités ou d'unités/de corps de mise en forme. L'invention vise à proposer un procédé servant à fabriquer une mousse à deux composants ou à plusieurs composants aux fins du moussage de cavités ou d'unités/de corps de mise en forme, ainsi qu'un ensemble servant à exécuter le procédé, permettant un fonctionnement à faible usure, un dosage rapide et hautement précis et une mise en œuvre requérant peu de moyens et à moindres coûts. A cet effet, l'invention propose un procédé servant à fabriquer une mousse à deux composants ou à plusieurs composants par l'application de composants mélangés dans des cavités ou des unités ou corps de mise en forme. Les composants respectifs sont amenés depuis un réservoir (1) respectif à une tête de mélange (3), selon le mode de fonctionnement lors de l'application, les composants sont amenés à la tête de mélange (3) sous l'effet d'une pression réglable au moyen d'un système doseur (2) ou sont mis en circulation lors de la circulation entre au moins le réservoir (1), le système doseur (2) et la tête de mélange (3). Les paramètres et réglages spécifiques des composants, du système doseur (2), de la tête de mélange (3) et du réservoir (1) sont détectés et adaptés au moyen d'une commande. Le dosage des composants respectifs est effectué au moyen au moins d'une unité doseuse de volume à piston en tant que système doseur (2), et, en vue de la circulation du composant respectif, un refoulement est rendu possible au moins sur le système doseur et/ou le long du système doseur (2). Le système doseur (2) est réglé de manière à pouvoir être rempli, au cours de la circulation, à un taux compris entre 0 % et 30 %. Le refoulement sur le système doseur (2) servant à remplir le système doseur (2) est effectué avant l'application, et le refoulement au moins sur le système doseur (2) est interrompu pour l'application, le système doseur (2) refoulant, du fait de sa purge, le composant sur la tête de mélange.
PCT/DE2015/100326 2014-08-03 2015-08-03 Procédé servant à fabriquer une mousse à deux composants ou à plusieurs composants aux fins du moussage de cavités ou d'unités/de corps de mise en forme WO2016019948A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112015003583.4T DE112015003583A5 (de) 2014-08-03 2015-08-03 Verfahren und vorrichtung zur herstellung eines zwei- oder mehrkomponentigen schaumes zum ausschäumen von hohlräumen oder von formgebenden einheiten oder körpern

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102014111008.0 2014-08-03
DE102014111008 2014-08-03
DE102014111223 2014-08-06
DE102014111223.7 2014-08-06

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Cited By (4)

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DE102017216812A1 (de) * 2017-09-22 2019-03-28 Wiwa Wilhelm Wagner Gmbh & Co. Kg Verfahren zur Steuerung eines Pumpensystems sowie Pumpensystem
WO2019091797A1 (fr) * 2017-11-10 2019-05-16 Robert Bosch Gmbh Dispositif de pulvérisation et procédé
WO2019165016A1 (fr) * 2018-02-23 2019-08-29 Sealed Air Corporation (Us) Systèmes de mousse en sac et leurs composants
US12030221B2 (en) 2020-08-20 2024-07-09 Sealed Air Corporation (Us) Foam-in-bag systems and components thereof

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EP2461964A1 (fr) 2009-08-07 2012-06-13 Bayer MaterialScience AG Procédé de traitement de systèmes réactionnels polymères rapides

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EP1702737A1 (fr) 2005-03-19 2006-09-20 Hennecke GmbH Procédé et dispositif de moulage des pièces en polyuréthane
EP2461964A1 (fr) 2009-08-07 2012-06-13 Bayer MaterialScience AG Procédé de traitement de systèmes réactionnels polymères rapides

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017216812A1 (de) * 2017-09-22 2019-03-28 Wiwa Wilhelm Wagner Gmbh & Co. Kg Verfahren zur Steuerung eines Pumpensystems sowie Pumpensystem
US10821461B2 (en) 2017-09-22 2020-11-03 Wiwa Wilhelm Wagner Gmbh & Co. Kg Method for controlling a pump system and pump system
WO2019091797A1 (fr) * 2017-11-10 2019-05-16 Robert Bosch Gmbh Dispositif de pulvérisation et procédé
WO2019165016A1 (fr) * 2018-02-23 2019-08-29 Sealed Air Corporation (Us) Systèmes de mousse en sac et leurs composants
US11511462B2 (en) 2018-02-23 2022-11-29 Sealed Air Corporation (Us) Foam-in-bag systems and components thereof
US11872724B2 (en) 2018-02-23 2024-01-16 Sealed Air Corporation (Us) Foam-in-bag systems and components thereof
US12005609B2 (en) 2018-02-23 2024-06-11 Sealed Air Corporation (Us) Foam-in-bag systems and components thereof
US12030221B2 (en) 2020-08-20 2024-07-09 Sealed Air Corporation (Us) Foam-in-bag systems and components thereof

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DE112015003583A5 (de) 2018-03-15

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