EP3796993A1 - Materialmischsystem mit pufferspeicher - Google Patents
Materialmischsystem mit pufferspeicherInfo
- Publication number
- EP3796993A1 EP3796993A1 EP19725347.9A EP19725347A EP3796993A1 EP 3796993 A1 EP3796993 A1 EP 3796993A1 EP 19725347 A EP19725347 A EP 19725347A EP 3796993 A1 EP3796993 A1 EP 3796993A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mixed material
- mixing
- piston
- buffer memory
- pressure
- 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.)
- Pending
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
- B01F23/47—Mixing liquids with liquids; Emulsifying involving high-viscosity liquids, e.g. asphalt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
- B01F23/49—Mixing systems, i.e. flow charts or diagrams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
- B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
- B01F25/4314—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor with helical baffles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
- B01F27/72—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices
- B01F27/721—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices with two or more helices in the same receptacle
- B01F27/722—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices with two or more helices in the same receptacle the helices closely surrounded by a casing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/75—Discharge mechanisms
- B01F35/754—Discharge mechanisms characterised by the means for discharging the components from the mixer
- B01F35/75425—Discharge mechanisms characterised by the means for discharging the components from the mixer using pistons or plungers
Definitions
- the present invention relates generally to systems for mixing material fluid streams to produce a suitable blend material having the desired properties for further use, such as surface processing.
- materials are often used that have special properties to meet the conditions of use.
- surfaces of certain products such as electronic circuit boards and the like, must be sealed and protected, for which materials in the liquid state are applied by suitable applicators, such as curtain nozzles, simple jet nozzles, and the like.
- suitable applicators such as curtain nozzles, simple jet nozzles, and the like.
- materials with certain properties for example for filling gaps and generally for leveling surfaces, and the like, with corresponding starting materials usually being in a more or less viscous state and after mixing the mixed material can be applied by appropriate application techniques, and then a curing of the material is set in motion.
- such materials must accordingly have a suitably low viscosity state prior to actual application to assist in the storage and further processing of these materials as well as in the art actual application to achieve the desired application behavior.
- two or more starting materials which are themselves in a suitably suitable state, often mixed immediately before the actual use of the final material, so that a homogeneously mixed mixed material is produced, but still at least over a more or less long period is still processable.
- technical solutions are available on the market, which offer the possibility to mix two different materials in a freely selectable mixing ratio and thus to provide a desired mixing material.
- the two starting materials are conveyed as corresponding mass flows, which typically have a suitably low viscosity, in each case via a corresponding metering device and fed to a mixing unit, which then generates the most homogeneous possible mixture.
- a mixing unit which then generates the most homogeneous possible mixture.
- applicator unit supplied, which then outputs the material in a suitable manner, for example, sprayed onto a surface, and the like.
- the two components are each supplied in exactly metered manner to the mixing unit, which then generates a mixed material according to the supplied mixing ratio of the two starting components, in which after mixing uses a corresponding chemical reaction, which typically leads to an increase in the viscosity of the mixed material leads and therefore makes a required to the corresponding "pot life" and the required output flow rate mixing rate required.
- Pot life is typically considered to be the time when the viscosity of a material increases by 100 percent.
- the mixing rate can be controlled to a certain extent, for example, by the speed of the mixing unit, which is provided, for example, in the form of a rotating mixing spiral, in particular during certain operating phases, for example at the beginning of a corresponding process for applying mixed material to a product, for example a printed circuit board to determine certain inhomogeneities in the amount of material, since in such phases an unusually high dynamics would be required for the corresponding drive motors of the mixing unit and possibly also of the metering units for the material flows to be supplied.
- inhomogeneity of the material to be applied is not acceptable in many applications, so that additional great effort is required to ensure the homogeneity of the applied mixed material layer.
- the material mixing system further includes a mixed material buffer storage having an inlet for receiving the mixed material from the mixing unit and an outlet for discharging the mixed material and configured to controllably pressurize the mixed material.
- a buffer storage is thus provided functionally after the mixing unit, which can receive the mixed material and store before the output, wherein the mixed material in the buffer memory in a controlled manner can be acted upon with pressure. That is, through the mixed material buffer memory, a required amount of the mixed material can be accumulated without the discharge of the mixed material from the accumulator already taking place.
- the controlled pressurization of the mixed material in the buffer memory is thus immediately after receiving a certain amount of mixed material this with precisely defined conditions available and can be output at the output and another processing unit, such as an applicator, optionally via a further pressure control device supplied.
- controllable pressurization which is independent of the cached in the buffer memory amount of the mixed material, therefore, a well-defined output pressure of the mixed material flow can be specified, which can thus be maintained regardless of the incoming volume flow and the outgoing flow. If, for example, an application process is to be started, it is ensured by the stable pressure conditions in the buffer memory that precisely defined conditions prevail in the applicator from the beginning, so that corresponding inhomogeneities, which can occur in conventional material mixing systems, are avoided or at least significantly reduced.
- the mixed material buffer can be loaded in sufficient quantities correspondingly early with the mixed material, also a high dynamic range for appropriate applications can be ensured, since application of the mixed material with a volume flow is possible, for example, exceeds the volume flow of the mixing unit loading the buffer memory. That is, the buffer memory may initially be loaded with a quantity of material that is sufficient for one or more application processes, even if the maximum achievable by the mixing unit volume flow is smaller than the volume flow that is required for the subsequent charging of the applicator. After the buffer has been emptied to a certain volume at a correspondingly set pressure after completion of a corresponding process, the buffer store is loaded again, so that in turn for one or more application processes sufficient mixing material is present.
- the material supply to the buffer memory may be interrupted as soon as the buffer memory has reached a suitable level, and thus can be intermittently filled with mixed material, so that an uninterrupted outflow at the outlet can be done, with a desired pressure is always guaranteed. In this way, even at low flow on the output side of the buffer memory reliable mixing operation can be ensured on the input side, since it is ensured that the corresponding mixing unit operates in a stable operating range.
- an effective storage volume of the mixed material buffer memory is dynamically adjustable. That is, the required pressure in the buffer memory is maintained under control without having to maintain a consistent storage volume.
- the buffer memory can be loaded with a variable but adjustable amount of material, while still allowing control of the internal pressure in the buffer memory to a predetermined, also variably adjustable setpoint.
- a dynamic determination of the effective storage volume is of particular advantage when adapting to a specific application process.
- different mixing materials including materials produced from the same starting materials but with different mixing ratios, have different pot lives which must be considered in order to ensure uniform application of the mixing material and also excessive hardening of the material appropriate mixing material in the buffer memory and the entire fluid line system to avoid.
- a greater effective storage volume of the buffer may be set for the blended material having the longer pot life as compared to the blended material having the shorter pot life. In this way, if necessary, a longer continuous operation can be achieved, since the amount of mixed material accumulated in the buffer memory can be specially adapted to the application.
- the mixed material buffer memory has a displaceable piston.
- a device of simple mechanical construction is provided in the form of the displaceable piston, which device can be used for pressurizing and dynamically adjusting the effective storage volume. That is, a simple mechanical construction can be realized, for example by providing a suitable storage body, for instance in the form of a hollow cylinder, in which the displaceable piston is arranged.
- the displaceable piston can be used, for example, to pressurize the mixed material by causing direct contact between the mixed material and the piston.
- the displaceable piston can be used to cause a pressurization of the mixed material, by means of an intermediate medium is a coupling to the mixed material.
- the displaceable piston communicates with the side remote from the mixing material with a controllable fluid pressure source.
- the controllable fluid pressure source is to be understood as a source having a pressurized fluid, which communicates with the opposite side of the piston and thus pressurizes this piston side and thus the piston.
- the fluid pressure source is formed on the basis of a gas, such as air, nitrogen, and the like, such that a variety of well-known pneumatic components are usable to connect the fluid pressure source to the mixed material buffer, such that the piston is subjected to a corresponding pressure.
- the fluid pressure source may be connected from a large fluid reservoir to respective pressure regulating components such that a desired pressure is provided by the pressure source.
- the fluid can also be provided in liquid form, so that in this regard well-known conventional hydraulic components can be replaced in order to realize the fluid pressure source and connect it to the buffer memory.
- appropriate pressure control components, compressors, and the like are used to form the fluid pressure source and / or to feed with suitable fluid.
- the fluid is such that it exhibits an approximately inert behavior with regard to the mixed material, so that corresponding leaks between the piston and the housing the buffer can occur, cause no significant changes to the mixed material.
- the displaceable piston is connected to a controllable electric or electromagnetic drive device.
- the piston can thus be moved by direct or indirect connection with the electric or electromagnetic drive device and thus pressurized, so that in turn can be done via the piston by means of the electric or electromagnetic drive means a desired pressurization of the mixed material.
- linear drive systems such as in the form of linear motors or spindle drives with rotating electric motors are available, which can be controlled in a very precise manner, so that a very precise articulation of the piston is ensured on the basis of such drive means.
- the piston itself may be a component of the electric or electromagnetic drive device, for example, by forming the piston as a rotor of a linear motor or the piston or a part thereof as a plunger of an electromagnetic drive, for example in the form of an electromagnet is provided.
- a fluid substantially inert for the mixed material can be introduced controllably into the mixed material buffer store.
- the substantially inert fluid may be introduced into the buffer reservoir so as to be in direct contact with the mixed material, and thus serve as a "fluid piston" to exert a force on the mixed material.
- a corresponding valve device may possibly be provided at the inlet and / or outlet of the buffer store, so that leakage is prevented when the fluid is present.
- a corresponding source for the pressurizing fluid is formed so that the fluid in a Retention can be recycled or a pressure reduction can be done by blowing into the environment, for example, if air or nitrogen are used as pressurizing fluids.
- the use of a pressurizing fluid in the buffer reservoir results in a mechanically very simple and robust construction, since no mechanically rigid moving parts are required, with the possible exception of valve elements at the inlet and / or outlet.
- the pressurizing fluid itself may contribute to preventing unwanted precipitation and hardening of the mixed material on the walls of the buffer reservoir.
- the conduits which are present for the supply and optionally discharge of the pressurizing fluid may also be used to introduce a suitable purge fluid into the buffer reservoir.
- a volume determining device is provided in the material mixing system, which is used to determine the current volume, i. the storage volume, the mixed material is formed in the mixed material buffer memory.
- the volume determination device is functionally connected to one or more sensors via which corresponding parameter values can be called up in order to determine the current volume of the mixed material.
- operating parameters of the mixing unit can be supplied to the volume determination device, so that the mixing unit serves as a "sensor" which outputs corresponding parameter values which characterize the incoming volume flow at the input of the buffer memory.
- volumetric dosing devices are frequently used, which promote a precisely defined volume flow at fixed operating conditions, for example at a fixed speed of a corresponding metering screw.
- the mixing unit the corresponding material flows of the starting materials are supplied in a known manner, working continuously, that is, a balance of incoming material and outgoing material, it can, for example, from the appropriate Radioparametem a Quantity of material per unit of time or a volume flow can be determined, which is present at the entrance of the buffer memory. From this volume flow and the corresponding volume of the respective supply lines between the mixing unit and the buffer memory thus the volume of the incoming mixed material can be determined.
- a corresponding output volume flow can also be determined, taking into account the volume of the line between buffer store and applicator, so that the volume of the mixed material in the buffer store can then be calculated from the two values ,
- one or more sensors suitable for direct determination of the volumetric flow may be provided at suitable locations within the supply and discharge of the buffer so that these values can be used to determine the current flow rate Determine the volume of the mixed material in the buffer tank.
- the level of the mixed material in the buffer memory is determined by suitable sensors or operating parameters. For example, when a movable piston is provided in the buffer memory, the position of the piston directly in contact with the mixed material can be detected to thereby accurately determine the volume of the mixed material.
- the actual position of the piston may be determined, for example, by one or more optical sensors inside the buffer, the one or more sensors being suitably mounted so as not to interfere with the movement of the displaceable piston.
- a distance measurement of the piston can be performed.
- operating parameters of the drive may optionally be used as "sensor values" to determine the position of the piston.
- the number of revolutions of a spindle drive can be used to determine the position of the piston in a very precise manner with a known pitch of the spindle. Since the regulation of a corresponding drive motor, for example a stepper motor, is typically carried out by an electronic control in which the corresponding number of revolutions can be set and read very accurately, corresponding values can be transmitted to the volume determination device and used to evaluate the piston position.
- the piston has an indicator element, which allows a non-contact determination of the position of the piston. That is, by suitable design of at least a portion of the piston position information can be transmitted without contact, so that a complex installation of a sensor within the buffer memory can be avoided.
- a magnet can be provided in the piston so that the position can be detected continuously or stepwise via a sensor arranged outside the buffer memory.
- low-cost reed switches can be attached to the outer surface of the buffer memory with appropriate resolution and interconnected, so that when passing a corresponding position, the respective switch responds.
- a continuous displacement sensor in conjunction with a magnetic material may be used to read position values of the piston.
- a control device which is designed at least for controlling the pressurization of the mixed material. That is, the control device is capable of at least the pressure in the buffer memory acting on the mixed material based on an adjustable setpoint independent of the amount of mixing material in the buffer memory, independent of a possible input flow rate and in particular independent of an output flow rate in about to maintain.
- the control device itself act on appropriate actuators, if they are provided for example as a mechanical pressure regulator, where manually or electronically a desired target pressure can be specified, which is then maintained by coupling to a suitable pressure accumulator and open an exhaust duct at overpressure.
- a suitable pressure regulator can be provided in the supply line between the buffer reservoir and the fluid source, which allows the desired pressure to be maintained above the piston.
- corresponding actuators are accessible via control signals, which make it possible to keep the pressure at the desired value.
- control device is designed to control one or more further components of the material mixing system and / or to receive corresponding operating parameter values from at least some components of the material mixing system, for example, suitable setpoint values for at least the control of To generate pressurization.
- control device may be designed to control corresponding electric or electromagnetic actuators that are mechanically connected to a piston of the buffer memory, so that operating parameters for these drive components can also be used to control the pressurization and to evaluate the state of the buffer memory.
- electrical or electromagnetic control of an actuator current consumption can be evaluated at a predetermined travel as an indicator of the pressure prevailing in the buffer memory, without the need for additional sensors are required.
- a displacement of the piston caused by conveying mixed material in the buffer memory can be evaluated by the controller due to a change in the rotational position of a corresponding motor and used accordingly to further exert a desired constant pressure on the mixed material.
- PLCs programmable logic controllers
- control device can also have suitable algorithms such that the special features and in particular the additional possibilities achievable by the buffer memory can be utilized in comparison to conventional mixing systems.
- the controller may determine or otherwise maintain pot life, eg, retrieve from a data store, and the like, and may use the known parameters of the system, such as volume of the feed lines, and the like, to appropriate blend material quantities in the buffer memory for various requirement profiles. If this is the control device is connected to the required actuators, they can generate suitable control signals to control the operation of the material mixing system so that the requirements for the appropriate application are met while the properties of the buffer memory are used optimally. In further embodiments, in which possibly one or more components of the material mixing system are not controllable by the control device, the control device can generate and provide information for an operator or another control system, at least by knowing the operating parameters of these components, in order to provide optimized operation allow the material mixing system.
- the material mixing system with the buffer memory with controlled pressurization of the mixed material, it is possible to adjust the pressure on the mixed material at the storage outlet in a very dynamic manner, by increasing or reducing the pressurization of the mixed material, so that different requirements during operation or respond to different requests for different runs.
- rapid changes in the jet widths in curtain nozzles may be responded by suitably adjusting the pressurization of the mix material in the buffer tank to maintain desired, precisely defined conditions during application of the mix material.
- the controllable pressurization can be carried out regardless of the filling amount of the buffer memory, so that unlike devices in which an elastic membrane or a spring acts on a material or a corresponding piston, a constant pressure can be maintained.
- the buffer memory can be provided as a mechanically simple construction, so that a construction of cost-effective disposable articles is possible.
- the buffer memory can be exchanged quickly in a cost-effective manner, if, for example, due to a power failure or the like, a significant exceeding of the pot life takes place, which would otherwise lead to a costly cleaning of the memory.
- Fig. 1 shows schematically a material mixing system in which a controlled
- FIG. 2 shows a schematic representation of a material mixing system in which the pressure control in the buffer memory takes place by pneumatic actuation
- 3A is a schematic sectional view of the buffer memory according to an illustrative embodiment, in which a displaceable piston is provided for pressurizing the mixed material.
- FIG. 3B is a perspective view of a piston usable in displaceable piston embodiments, such as in the embodiment shown in FIG. 3A; FIG.
- FIGS. 4A and 4B schematically show sectional views of the buffer memory, wherein a displaceable piston is provided, which is directly mechanically coupled to an electric or electromagnetic drive device, and
- Figs. 5A and 5B show schematic sectional views of the buffer memory in which the
- Pressurization of the mixed material in the buffer memory by the action of a pressurizing fluid takes place.
- a pressurizing fluid such as a gas, a suitable liquid, and the like
- Fig. 1 schematically shows a system 190 for producing and applying a mixed material made of two or more components by mixing.
- the system 190 has a corresponding material source 191 in which corresponding starting materials are typically provided in the form of fluids, the individual components having certain properties which enable reliable transport, storage and processing.
- the starting materials are liquids with a good manageable viscosity, whereby the desired material properties are obtained by mixing two or more components, and, as already stated, a final product is obtained after a certain curing time, which meets the application-specific requirements.
- the material source 191 thus has corresponding containers or other material sources which can provide by desired means, for example by pumping, such as in the form of diaphragm pumps, and the like, starting materials of desired quantity and flow rate.
- Material source 191 also typically includes one or more materials that may be used to rinse system 190, and include suitable solvents, and the like. These include, for example, fluids in the form of gas, such as air, nitrogen and the like, which may also be provided by suitable means, pressure vessels and the like.
- the system 190 further includes a material mixing system 100 that is designed in accordance with the present invention to achieve significant increases in efficiency over conventional material mixing systems, and in particular, the material mixing system 100 allows for increased response to dynamically varying acceptance assurances, as previously set forth in detail below.
- the system 190 further includes a material dispensing component 192, which receives a mixed material 193 from the material mixing system 100 and the mixed material 193 in a suitable Way.
- the mixed material dispensing component 192 has one or more types of nozzles to spray the mixing material 193 onto an object, with corresponding nozzles typically being controllable, such that the flow depends on the current operating state of the corresponding nozzle.
- the material mixing system 100 according to the invention is used within the system 190 to apply mixed materials to support plates of electronic components, so that corresponding components after assembly on the support plate receive additional functions, such as protection against environmental influences, and the like.
- the material system 190 may be used with the inventive mixed material system 100 for the production and application of mixed materials in which the mixed material can be processed before the expiration of a certain period of the chemical reaction, typically with increased viscosity compared to the starting materials and corresponding volume flows of the mixing material 193 are in the range of a few cubic centimeters per minute up to a few hundred cubic centimeters per minute.
- the mixed material system 100 is designed so that in particular a fast response to rapid changes in the purchase quantity is made possible.
- the system 100 may respond with a corresponding high response speed and a variable volume flow provide. In this way, a continuous material quality of the applied mixed material 193 is ensured.
- the dynamics of a system for mixing and applying a mixed material is typically given by the mechanical properties of corresponding metering units and the construction of a mixer, since, for example, the metering units can not change their throughput arbitrarily fast and the mixer also typically a corresponding through its construction has a low response speed.
- volumetric units are designed as volumetric units, so that, for example, a corresponding metering screw is provided which promotes a precisely defined amount of starting material from its input to its output, if it is ensured that sufficient starting material of the material source 191 always at the respective metering units pending.
- the rotational speed of the corresponding screw conveyor makes it possible to use the Quantity per unit of time and thus the flow rate can be precisely adjusted by about the speed of the screw conveyor is controlled.
- the metering units 194A, 194B may respectively provide the starting materials for the mixing material 193 in the desired amount ratio, while for example the metering unit 194C may be provided for the metered supply of cleaning material, and the like, if accurate Dosage is required.
- the metering unit 194C may be provided for the metered supply of cleaning material, and the like, if accurate Dosage is required.
- three or more components may be required for the resulting blend material 193.
- the metered volumes of material provided by the metering units 194A, 194B, 194C, which are schematically referred to herein as 195A, 195B, 195C, are fed to a mixing unit 110 of the material mixing system 100, which is shown schematically as having at least two of the volume flows 159A, 159B can mix homogeneously.
- the mixing unit 110 may also be a combination of a plurality of mixing units, for example if several starting materials are to be mixed in multiple stages, that is to say in several steps.
- the mixing unit 110 may be a well-known static / dynamic mixing unit in which a mixing coil is provided statically, for example, if the material properties of the starting materials, such as the viscosity, are relatively similar and the substances are readily miscible, so that when passing through the static mixing helix homogeneous material mixture is formed. This is usually limited to certain values of the mixing ratio.
- a dynamic, that is rotatable mixing helix may be provided in order to achieve a higher degree of flexibility in the homogeneous mixing of the streams of starting material.
- the material mixing system 100 further comprises a mixed material buffer 120, also referred to as a buffer memory, with an inlet 121 which is directly or indirectly connected to the mixing unit 110 in order to receive the mixed material 193 from the mixing unit 110. Furthermore, an outlet 122 is provided, through which the mixed material 193 can be dispensed, for example, to an optional form control 130, which in turn passes the mixed material 193 with a desired pressure to the output component 192.
- a mixed material buffer 120 also referred to as a buffer memory
- an inlet 121 which is directly or indirectly connected to the mixing unit 110 in order to receive the mixed material 193 from the mixing unit 110.
- an outlet 122 is provided, through which the mixed material 193 can be dispensed, for example, to an optional form control 130, which in turn passes the mixed material 193 with a desired pressure to the output component 192.
- the buffer memory 120 further includes a storage volume 123 that is controllably variable in some embodiments, as previously discussed or as further detailed below. It should further be noted that the positions of the input 121 and the output 122 do not necessarily correspond to the positions shown in FIG. 1 and are merely to be considered as functional components, so that the actual position of the respective ports for the input 121 and the output 122 are selected according to the requirements, as also explained in more detail below.
- the buffer 120 is a controlled buffer which applies at least a controllable pressure to the mixed material therein. That is, the buffer memory 120 includes or at least coupled to a pressure regulator 124 capable of appropriately adjusting and maintaining the pressure prevailing in the storage volume 123 so that the pressurization of the mixed material in the storage volume 123 with value is set relatively precisely.
- the pressure regulator 124 may be a unit in which a proportional valve (not shown) is actuated such that a pressure, ie a corresponding fluid, arising from a pressure accumulator (not shown) is introduced into the storage volume 123 and thus the material contained therein applied to the desired pressure.
- the pressure control 124 is further designed so that a corresponding adjustment of the pressure with a short response time, for example in the range of a few milliseconds to a few tens of milliseconds occur can, for example, by a corresponding bypass path or venting path, not shown, is provided.
- a pressure source is used with a pressurizing fluid
- the pressurizing fluid may act directly on the mixing material or may interact with the mixing material via a slidable piston, as explained in more detail below.
- the pressure control 124 may be in the form of a direct mechanical coupling when, for example, in the pressure control 124 suitable drive components, such as linear motors, rotary motors with spindle drive, drives with toothed Rod, electromagnetic drives that cause a linear effect, and the like are provided.
- the pressure control 124 can aul lo a control device, which is designed independently of remaining components of the material mixing system 100 so that the corresponding pressure in the storage volume 123 is maintained, taking into account a predetermined from the outside setpoint.
- mechanical pressure regulators may be provided, wherein, for example, the corresponding desired value is determined by manually setting a corresponding regulator, and the like.
- an electronic control device is provided which acts on respective actuators, such as a proportional valve and the like, to perform the pressure control in the storage volume 123.
- an electronic control device 140 is provided which is adapted to perform the function of pressure control 124 by, for example, generating corresponding drive signals for actuators and / or receiving sensor signals or other signals having parameter values of the pressure control 124 or other components of the material mixing system 100 and evaluated, and the like.
- the controller 140 is also operatively connected to at least one other component of the material mixing system 100 and / or the system 190 to receive at least parameter values or sensor values and evaluate it to control the buffer memory 120.
- the controller 140 may be provided in the form of a microcomputer, a microcontroller, and the like, with corresponding functional modules being implemented that perform various evaluation and control tasks.
- PLCs programmable logic controllers
- control device 140 may be connected to corresponding parts of the control device 140, which have a certain own “intelligence", so that, for example, the execution of control tasks, such as keeping a position constant an electric motor, the opening or closing of valves, and the like in shorter time intervals compared to the cycle time of the control device 140 is possible.
- corresponding electric motors can be addressed by only one or a plurality of setpoints, such as speed and the like, while the actual control loop is implemented in a subordinate unit, for example a Quimotoransteu-, so that the response speed is given by the mechanics of the respective components to be driven and the corresponding subordinate controls.
- control device 140 with corresponding drive motors for the
- Screw conveyors of the dosing units 194A. 194C be coupled, so that appropriate
- the controller 140 may be connected to the mixing unit 110 to provide a corresponding setpoint for the rotational speed when considering an active mixing unit, or to obtain corresponding operating parameters, such as current consumption of a corresponding motor, a state of a corresponding mixing helix detect, and the like. In this way, the operation of the buffer memory 120 can be adapted in an optimized manner to the interaction of the other components of the system 100 and the system 190.
- the controller 140 is configured to serve as a volume determination device that determines the storage volume based on sensor signals and / or other signals supplied thereto, such as drive components, and the like, as previously described.
- the metering units 194A 194C supply the corresponding volume flows 195A, 195B, 195C to the mixing unit 110, FIG then a homogeneous mixture of the two or more material components takes place.
- the generated mixed material 193 is then first supplied to the buffer storage 120, in which an application adapted amount of the mixed material 193 is stored before mixed material 193 is output at the output 122.
- control of the buffer memory 120 can be carried out in an application-specific manner such that a defined volume flow is below a desired one Printing is output to the output component 192, which applies the mixed material 193 in the desired shape to an object, such as a printed circuit board.
- the controller 140 may invoke or determine corresponding parameters pertaining to the pot life of the material 193, the instantaneous flow rate in the dispensing component 192, the current state of the buffer memory 120, and the like. In this way, it is determined, for example, what amount of mixing material 193 is initially to be stored in the buffer memory 120 before the application process can begin.
- the controller 140 knows the corresponding operating conditions of the dispensers 194A, 194C and mixing unit 110, then taking into account the material properties , that is, the pot life, a corresponding amount to be stored and an associated output time are calculated before a new "charge" of the buffer memory 120 is required.
- the continuous feed of material in the buffer memory 120 can be taken into account in a forward-looking manner in order to determine the corresponding number of possible application processes and the corresponding amount of material in the buffer memory 120.
- a suitable residence time for the mixed material in the buffer store 120 is determined by the control device 140 taking into account the pot life, so that, if necessary a corresponding smaller amount is sufficient. Nevertheless, fluctuations occurring in the process due to the high dynamics of the material mixing system 100 can be compensated.
- the pre-pressure control 130 is provided in conventional systems to obtain some "consistency" of the pressurization of the mixed material to the dispensing component, however, in the present invention, this pre-pressure control 130 may be omitted as appropriate, provided that the high response speed of the Buffer 120 is considered sufficient to pressure fluctuations for certain requirements.
- Fig. 2 shows schematically a system for producing and applying a mixed material 290 in which a material system 291 aulweis a material source 291 A for a first component and a material source 291 B for a second material component.
- Material sources 291 A, 291 B can be cartridges or other sources that provide the two starting materials.
- a component 291 C may be provided, for example in the form of a solvent, and the like.
- the material sources 291 A, 291 B are connected to corresponding metering units 294A, 294B, which are provided for example in the form of a volumetric system in which a corresponding drive unit of the units 294A and 294B, respectively, set a corresponding auger in motion, so that independent of pressure and temperature of the input materials speed and construction is promoted a precisely defined amount of material per unit time.
- the two metering units 294A, 294B are connected to a mixing unit 210, which is designed, for example, as a static-dynamic mixing device, which is provided with a drive component 211, such as an electric motor, and a mixing spiral 212.
- a drive component 211 such as an electric motor
- a mixing spiral 212 is rotated by the motor 211 in order to achieve as homogeneous a mixture of a mixed material 293 as possible even with very different material properties and / or a large mixing ratio.
- the mixing unit 210 is connected to a mixed material buffer memory 220, to whose inlet 221 the mixed material 293 is fed.
- An exit 222 is located near the entrance 221 and is connected to a pre-pressure control 230, which in turn is connected to an output component 292, such as a Jetter nozzle and / or a curtain nozzle, and the like.
- the mixing unit 210 in conjunction with the buffer 220 and the optional form control 230 correspond to a material mixing system according to the invention, as for example also previously explained in connection with the system 100.
- the buffer 220 is formed, for example, as a cylindrical hollow body made of inexpensive materials, such as PTFE, but other materials are available, such as aluminum, and the like.
- the buffer 220 has a displaceable piston 225, which thus serves to pressurize the mixed material 293 inside the buffer memory and at the same time defines the effective storage volume of the buffer 220. That is, on a side facing away from the mixing material 293 side of the piston 225, a fluid storage volume 224A is defined, which is filled with a pressurizing fluid, such as air, nitrogen, and the like or even a liquid, so that on the one hand the desired pressure the piston 225 is exerted and, on the other hand, by appropriately supplying and discharging fluid from the fluid storage volume 224A, a corresponding variable adjustment of the effective storage volume for the mixed material 293 is accomplished.
- a pressurizing fluid such as air, nitrogen, and the like or even a liquid
- a pressure control 224 for the mixed material 293 is achieved by coupling a suitable fluid source (not shown) to the fluid storage volume 224A above the piston 225 and providing a corresponding actuator or actuator 224B, which is incorporated in US Pat is able to regulate and maintain the pressure in the fluid storage volume 224A at a desired value.
- the component 224B may comprise a bypassing proportional valve, so that a corresponding amount of the fluid may be supplied from the pressure reservoir, not shown, so that a desired pressure is maintained even with a variable amount of the mixed material 293, whereas when increasing the volume of the mixed material 293 and a force exerted thereon by the mixed material 293 on the piston 225 allows leakage of fluid from the fluid storage volume 224A under control.
- pressure regulation 224 may be accomplished on the basis of an electronic controller, or manual controls may be employed to maintain the desired pressure conditions in the fluid storage volume 224A.
- a sensor 226 which detects the position of the displaceable piston 225.
- the sensor 226 may be formed, for example, as an analog displacement sensor responsive to a corresponding indicator material in the displaceable piston 225.
- the corresponding indicator material as a Magnet may be provided in the piston 225.
- a control device (not shown), for example the control device 140 of FIG. 1, can determine the current value of the effective storage volume correspondingly, so that the amount of mixed material 293 present in the buffer reservoir 220 is always known.
- the actual amount of mixing material 293 may be obtained on the basis of "indirect" values, as previously explained in connection with FIG.
- the sensor 226 provides a very accurate and well-resolved position indication for the displaceable piston 225
- other variants may employ other sensors, such as a series of discretely arranged reed switches, and the like.
- electromagnetic coupling between the piston 225 and a corresponding receiver externally attached to the buffer memory 220 can be utilized to also detect the position of the displaceable piston 225 in a non-contact manner.
- the system 290 and the material mixing system with the components 210, 220 and 230 it is generally possible to control the buffer memory 220 and at least one further component via a corresponding electronic control device, as explained in connection with FIG. 1, for example is.
- the drive components of the metering units 294A, 294B, the motor 211 of the mixing unit 210 may also be controlled by or under the direction of a corresponding electronic control, or at least corresponding operating parameters may be provided for a corresponding control so that the state of the system 290 may be evaluated In particular, to control the operation of the buffer memory 220 in consideration of the state of the system 290.
- the materials 291 A, 291 B are dispensed from the metering units 294A, 294B to the mixing unit 210 in accordance with a predetermined mixing ratio, in which the most homogeneous mixture possible of the two components, such as static or dynamic, depending on the Starting materials, their mixing ratio, and the like.
- the mixed material 293 is supplied to the inlet 221 at a lower area of the buffer tank 220, so that against the pressure of the piston 225, the mixing unit 210 conveys the material 293 into the buffer tank 220. That is, by displacement of the piston 225, the introduced mixed material 293 is pressurized by the piston 225, which is present in the fluid storage volume 224A and is kept substantially constant by the pressure control 224.
- the mixing unit 210 when the mixing unit 210 is in operation, further mixed material 293 is introduced into the buffer storage 220 against the pressure of the piston 225, and further a relatively constant Pressure in the volume 224A is maintained.
- the pressure control 224 is configured such that as the fluid storage volume 224A decreases, fluid leakage, such as outward or into a fluid reservoir, not shown, is possible to maintain the desired pressure.
- the position of the piston 225 may change downward depending on the feeding volume flow generated by the mixing unit 210, so that the control component 224B then provides that the desired constant pressure in the fluid storage volume 224A continues to be maintained. If a change in the volume flow occurs, which is caused by a change in the jet width of a curtain nozzle, for example, the resulting pressure fluctuation can be absorbed by the pressure control 224, without a noticeable change for the pressurization of the mixed material 293 is caused.
- the corresponding decrease in storage volume is compensated for by a corresponding movement of the piston 225 and further introduction of pressurizing fluid into the volume 224A, so that very constant pressure conditions continue to exist on the output component 292.
- the same applies to a reduction of the volume flow if about the same time still a material flow from the mixing unit 210 takes place, so that a material increase then occurring in the buffer memory 220 is compensated accordingly.
- an electronic controller may determine appropriate operation for a particular application in advance or dynamically for the buffer 220. For example, a minimum effective storage volume required to reliably enable operation of the dispensing component 292 may be determined such that upon reaching this minimum storage volume, corresponding material from the mixing unit 210 into the buffer storage 220 is to be resupplied. For this purpose, for a known profile of the output of the blend material 293, a corresponding amount of the blend material 293 required for reliable supply to the given profile may be determined to assure operation of the output component 292 for a corresponding amount of time.
- a maximum effective storage size which is determined as a function of the pot life, can also be determined for this purpose so that, when filling the buffer tank 220, too large amounts of the mixed material 293 are not loaded, which could otherwise contribute to premature curing of the material and thus to the inability of the entire system 290.
- such values for the minimum and maximum storage size may be set as a function of the position of the displaceable piston 225, so that upon reaching the minimum piston position, a corresponding signal is output to the mixing unit 210, and thus also to the metering units 294A, 294B so that material is mixed again and the buffer 220 is loaded if the operation of these units has previously been interrupted. Likewise, upon reaching the maximum piston position, the further supply of material is discontinued so that the residence time of the mixing material 293 in the buffer reservoir 220 is in a non-critical range with respect to pot life.
- a position determined for this particular application as the maximum piston position can be determined so that the mixing unit 210 can be reliably emptied in any case without exceeding the storage volume critical in terms of pot life, but at the same time hardening mixed material in the mixing unit 210 is prevented as possible.
- the mixing unit 210 and the metering units 291 A, 291 B can be operated in a reliable, possibly relatively limited operating range, while still allowing high dynamics with regard to the volume flow to be provided. That is, in applications where a high volume flow in the dispensing component 292 is required on average, the component 292 may be operated intermittently when the inflow from the mixing unit 210 is less than the average outflow from the buffer memory 220. In this case determined appropriate minimum and maximum storage volumes, so that the output component 292 can be operated reliably over appropriate periods of time and under precisely defined operating conditions, while in appropriate periods of operation, the buffer memory 220 can be refilled properly. In this case, the metering units 294A, 294B and the mixing unit 210 can be operated continuously without causing an effect on the delivery pressure during the active phases of the dispensing component 292.
- pressure transducers may be provided at suitable locations, such as after the metering units 294A, 294B and after the buffer storage 220. By determining the pressure conditions, various states of the system may be provided System 290, such as a reduction in the "transmission" of a line section, and the like.
- the values of the pressure transducers can also be used to control the operation of the buffer 220, advantageously using an electronic control device such as the controller 140 of FIG.
- FIG. 3A shows a schematic sectional view of a mixed material buffer 320, referred to briefly as a buffer memory, which can be used for example in the embodiments previously shown with reference to FIGS. 1 and 2.
- the buffer 320 is part of a material mixing system, such as the system 110 shown in FIG.
- the buffer memory 320 is therefore connected to a mixing unit 310, which has, for example, a dynamically driven mixing coil 312 in which two or more material components are mixed as homogeneously as possible, so that a mixing material 393 is formed, which is connected via an inlet 321, ie a passage between the mixing unit 310 and a storage volume 323 is introduced into the buffer memory 320.
- the mixing material 393 leaves the storage volume 323 via an outlet 322, which is formed, for example, as a fluid passage to a corresponding supply line for an output component.
- the output 322 is connected to a pre-pressure regulator 330, which, for example, has a further pressure input, not shown, for further pressurizing the mixed material 393.
- the pressurization may be solely via the reservoir 320 so that another volume is not required to pressurize the mix material 393 prior to delivery to a corresponding output component.
- a mechanically simple structure results from the fact that the input 321 is coupled directly to the mixing unit 310 as a fluid passage and the output is also coupled directly as a fluid passage with the admission pressure control 330 or a corresponding outlet.
- a displaceable piston 325 is provided, which leads to a division of the entire volume of the fluid reservoir 320 into the effective storage volume 323 and into a fluid storage volume 324A, which in the illustrated embodiment is charged with a suitable fluid to move over the displaceable Piston 325 to apply the mixing material 393 with a desired pressure, as previously explained.
- the fluid storage volume 324A is filled with air or nitrogen and thus represents a pneumatic pressure control for the buffer 320.
- the fluid piston 325 has a suitable indicator material 325A which is capable of detecting the position of the fluid piston 325 is enabled by a position sensor shown schematically as 326.
- the indicator material 325A is provided in the form of a magnet and the sensor 326 is an analog sensor, so that a nearly continuous detection of the current position of the piston 325 is possible.
- the configuration of the housing of the fluid reservoir 320 can be kept simple because no corresponding through holes and the like are required for internal sensors.
- the structure of the fluid reservoir 320 of the illustrated embodiment is designed so that the smallest possible amount of dead spaces is present, including the non-contact coupling of the indicator material 225A contributes to the sensor 326.
- the illustrations in FIG. 3A are very schematic and the corresponding feedthroughs and lines, for example in the form of the inlet 321 of the outlet 323 and the ducting in the admission pressure control 330, are actually designed so that the flow of mixed material 393 is as low as possible without corresponding areas with flow arrest is given.
- the 90 ° corners shown in the drawing are correspondingly rounded in practice.
- the operation of the buffer memory 320 is similar to the operation described above in connection with FIGS. 1 and 2. That is, the mixing unit 310 feeds the interior of the buffer memory 320 with the mixed material 393, thus displacing the displaceable piston 325 against the pressure exerted in the fluid storage volume 324A on the piston 325, thereby causing the mixed material 393 to move is pressurized in the fluid storage volume 324A in a controlled manner.
- the amount 393 in the effective storage volume 323 increases when the outflow is smaller than the inflow.
- the storage volume decreases when the outflow is higher than the inflow.
- Fig. 3B shows a schematic perspective view of one possible embodiment of the displaceable piston 325.
- a suitable outer material 325C is provided, which is compatible with the properties of the mixed material.
- a material can be selected, as it also finds use in conventional material cartridges.
- a bottom 325B of the piston 325 may be configured so that when a mechanically lowermost position in the buffer memory is reached, complete closure of the input 321 and / or the output 322 (see FIG. 3A) is prevented, so that also in this Location of the buffer can continue to be charged with material.
- a corresponding arrangement is thus favorable for operating conditions in which an almost complete emptying of the buffer memory is advantageous. For example, when calibrating the buffer reservoir and / or the metering units and when determining suitable metering ratios, emptying the buffer reservoir can facilitate a more precise determination of calibration values and parameters.
- the piston 325 may comprise a suitable indicator material, such as the material 325A of FIG. 3A, which is encased by the outer material 325C.
- FIG. 4A shows a schematic sectional view of a buffer store 420, which is likewise replaceable in the material mixing systems explained above.
- the buffer 420 has a displaceable piston 425 which thus dynamically adjusts an effective storage volume 423 and therefore directly pressurizes a corresponding mixing material (not shown), as previously described in connection with the embodiments of FIGS. 2 and 3A 3B.
- an electrical or electromagnetic pressure control 424 is provided which comprises a drive unit 424C, for example in the form of a rotating electric motor, and a corresponding unit for converting the rotary motion into linear motion 424D.
- corresponding linear drives are well known as spindle drives.
- the piston 425 By controlling the drive unit 424C, the piston 425 can thus be moved, and upon contact with the mixed material, a desired pressure can thus be exerted which can be adjusted in a precise manner by operating parameters of the drive unit 424C.
- the drive unit 424C may be coupled to a suitable controller, such as the controller 140 shown in FIG. 1, with appropriate control components interposed therebetween, such as an inverter, and the like, such that a precise position and / or pressure for the user Pistons 425 are adjustable.
- the current position of the piston 425 can be immediately evaluated and read out, for example, when introducing mixed material into the buffer 420 to the corresponding evoked displacement of the piston 425 via a corresponding pedometer, position sensor, and the like for the drive unit 424C .
- the force on the piston 425 can also be set in a precise manner by a corresponding setpoint value for the torque of the drive unit 424C, so that a desired constant pressurization of the mixed material results.
- the reaction time of the system of piston 425 and pressure control 424 is well within the range of typical pneumatic pressure controls or even lower, in particular the use of electrical or electromagnetic components contributes to the overall energy efficiency of an overall system.
- the piston 425 can be provided without further indicator materials and the like, since a precise position determination by means of the drive unit 424C and the associated electronic control device is ensured. Furthermore, it is also possible to detect an impermissible or hardened state of a mixed material by evaluating the corresponding change in position of the piston 425 of the current of the drive device 424C to be impressed.
- FIG. 4B schematically shows a further variant in which a linear displacement of the piston 425 is made possible by an electric or electromagnetic drive device.
- a rotary motor 424F is provided in connection with a rack 424E, which is coupled directly to the piston 425.
- the position of the piston 425 and the pressure exerted on the mixing material provided in the storage volume 423 can be reliably determined.
- the drive device 424F substantially the same criteria apply as previously explained.
- a form control 430 is shown, which can also be used in the variant of FIG. 4A, provided that the pressure control by means of the buffer memory 420 is to be further improved in dynamics.
- the electric or electromagnetic drive systems shown by way of example in FIGS. 4A and 4B are also intended to be representative of other electromagnetic drive systems, such as linear motors that allow direct linear motion without the detour of rotation, or electromagnetic systems in which a tappet in an electromagnet with the piston 425 is directly coupled. Also, electrical in which the piston 425 itself serves as a driving component, constituting approximately a part of a magnetic circuit, whereby, according to the reluctance principle, a displacement of the piston 425 is effected by suitable generation of a magnetic field.
- FIG. 5A shows a variant of a buffer store 520 which can be replaced, for example, in the material mixing system 100 of FIG. 1.
- a pressurizing fluid which is schematically provided as 524A as part of a pressure regulator 524, is in direct contact with a mixing material 593.
- the pressurizing fluid 524A is preferably provided as a substantially inert material with respect to the mixed material 593. That is, suitable liquids and / or gases may be used that do not substantially affect the chemical reaction occurring in the mixing material 593.
- the pressure control 524 is configured to introduce the fluid 524A into the buffer 520 so as to maintain a desired pressure in the reservoir 520 at all times.
- a corresponding shut-off device may be provided at an inlet 521 and / or an outlet 522 of the accumulator, in order to avoid possibly the outflow of fluid when the accumulator tank is completely emptied.
- the corresponding fluid 524A is appropriately aspirated with the buffer tank completely empty.
- the compression caused by volume decrease of the fluid 524A when gaseous fluids are being considered, or the force thereby applied to the fluid 524A when incompressible fluids are considered, in the pressure control 524 by outflow of fluid in a corresponding memory is regulated, so that further the material 593 is subjected to the same pressure.
- more fluid is supplied when the effective volume in the buffer memory 520 becomes smaller due to the outflow of the mixing material 593.
- the inlet 521 coupled to a respective mixing unit, is also provided remote from the outlet 522 so that incoming fresh mix material is applied to pre-existing mix so that the longest-stored material is always through the outlet 522 is removed, so that the problem of pot life can be further mitigated because it always removes the material with the longest residence time.
- input 521 and output 522 designed so that the lowest possible flow resistance is achieved and almost no dead space.
- FIG. 5B shows a further variant of the buffer store 520, although the mixing material 593 is in direct contact with the pressurizing fluid 524A, but this is also pressurized by a displaceable piston 525, thus compensating for the volume changes at the desired pressure.
- the displaceable piston 525 can be driven pneumatically, mechanically, and the like, as also explained above.
- the direct contact of the pressurizing fluid 524A with the mixing material 593 may result, in particular, in a more trouble-free operation since, for example, mechanical inadequacies associated with a movable piston in direct contact with the mixing material can be largely avoided.
- hardened residues of mixed material in the region of the inner surface of the buffer reservoir, which is also the sliding surface with the piston can lead to disturbances of the piston movement.
- the fluid 524A can be suitably replaced or even used as a flushing agent if, after a successful run, the interior of the buffer store 520 is to be cleaned.
- the present invention provides a material mixing system that provides a significantly higher dynamic range of operation compared to conventional mixing systems because the pressure controlled buffer allows a greater degree of flexibility to respond to different requirements for application of a mix.
- the operation of the buffer may be efficiently incorporated into the general control flow of a corresponding material mixing system and master mixing material application system by, for example, calibrating, adjusting mixing ratios, and the like, controlling the buffer to a well-defined operating state, so that corresponding results obtained can be obtained with the same precision as conventional systems.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Dispersion Chemistry (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Coating Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018208090.9A DE102018208090A1 (de) | 2018-05-23 | 2018-05-23 | Materialmischsystem mit Pufferspeicher |
PCT/EP2019/062754 WO2019224114A1 (de) | 2018-05-23 | 2019-05-17 | Materialmischsystem mit pufferspeicher |
Publications (1)
Publication Number | Publication Date |
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EP3796993A1 true EP3796993A1 (de) | 2021-03-31 |
Family
ID=66625187
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP19725347.9A Pending EP3796993A1 (de) | 2018-05-23 | 2019-05-17 | Materialmischsystem mit pufferspeicher |
Country Status (6)
Country | Link |
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US (1) | US20210187458A1 (de) |
EP (1) | EP3796993A1 (de) |
CN (1) | CN112313002A (de) |
DE (1) | DE102018208090A1 (de) |
RU (1) | RU2756468C1 (de) |
WO (1) | WO2019224114A1 (de) |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2640851B2 (ja) * | 1989-01-17 | 1997-08-13 | ノードソン株式会社 | 液状フォトレジスト剤の塗布方法とその装置 |
DE4106619C2 (de) * | 1991-03-01 | 1995-03-23 | Siegfried Ammann | Verfahren zum Einbringen einer Zumischung, insbesondere von Früchten und/oder Fruchtteilen als Fruchtzubereitung, in eine flüssige Grundsubstanz, insbesondere Joghurt, und zum anschließenden Abfüllen der entstandenen Mischung in Behälter, insbesondere Becher, sowie Vorrichtung zur Ausführung des Verfahrens |
SE468341C (sv) * | 1991-03-20 | 1997-04-27 | Kvaerner Pulping Tech | Apparat för blandning av en suspension av ett cellulosahaltigt fibermaterial och ett fluidum |
SE509103C2 (sv) * | 1997-04-22 | 1998-12-07 | Tetra Laval Holdings & Finance | Homogeniseringsventil |
SE513519C2 (sv) * | 1998-09-15 | 2000-09-25 | Tetra Laval Holdings & Finance | Metod för homogenisering av en trycksatt, vätskeformig emulsion |
US20030010792A1 (en) * | 1998-12-30 | 2003-01-16 | Randy Forshey | Chemical mix and delivery systems and methods thereof |
US6984063B2 (en) * | 2002-10-07 | 2006-01-10 | Advanced Biomaterial Systems, Inc. | Apparatus for mixing and dispensing components |
US7524103B2 (en) * | 2003-11-18 | 2009-04-28 | Boston Scientific Scimed, Inc. | Apparatus for mixing and dispensing a multi-component bone cement |
DE102004048568A1 (de) * | 2004-10-04 | 2006-04-06 | Bähr GmbH Bremen | Vorrichtung zum Mischen von pumpfähigen Komponenten |
EP2213245B1 (de) * | 2006-01-17 | 2012-07-04 | Baxter International Inc. | Mischvorrichtung und -verfahren |
DE602007008528D1 (de) * | 2006-02-10 | 2010-09-30 | Barger Mark A | Vorrichtung und Verfahren aufweisend ein einziehbares Mischelement |
KR101466876B1 (ko) * | 2013-03-25 | 2014-12-03 | (주) 디유티코리아 | 혼합유도 공기노즐을 갖는 소량 토출용 믹싱헤드 |
EP2871399A1 (de) * | 2013-11-11 | 2015-05-13 | Nordson Corporation | Flüssigkeitspuffer mit geschlossener Schleife für ein Zweikomponenten-Mischsystem, das zum Bewegen mit einem Spender montiert ist |
US9817315B2 (en) * | 2014-03-13 | 2017-11-14 | Taiwan Semiconductor Manufacturing Co., Ltd. | System and method for supplying and dispensing bubble-free photolithography chemical solutions |
US10167183B1 (en) * | 2015-04-14 | 2019-01-01 | Sestra Systems, Inc | System and method for beverage dispensing |
AT516945B1 (de) * | 2015-07-03 | 2016-10-15 | Sonderhoff Eng Gmbh | Vorrichtung zum Herstellen einer Mischung aus wenigstens einem Gas und wenigstens einer flüssigen Kunststoffkomponente |
KR20170089053A (ko) * | 2016-01-25 | 2017-08-03 | 삼성전자주식회사 | 수지 도포 장치 및 이를 사용한 발광소자 패키지 제조방법 |
-
2018
- 2018-05-23 DE DE102018208090.9A patent/DE102018208090A1/de active Pending
-
2019
- 2019-05-17 CN CN201980042232.4A patent/CN112313002A/zh active Pending
- 2019-05-17 RU RU2020137440A patent/RU2756468C1/ru active
- 2019-05-17 EP EP19725347.9A patent/EP3796993A1/de active Pending
- 2019-05-17 US US17/056,880 patent/US20210187458A1/en not_active Abandoned
- 2019-05-17 WO PCT/EP2019/062754 patent/WO2019224114A1/de active Application Filing
Also Published As
Publication number | Publication date |
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DE102018208090A1 (de) | 2019-11-28 |
RU2756468C1 (ru) | 2021-09-30 |
CN112313002A (zh) | 2021-02-02 |
US20210187458A1 (en) | 2021-06-24 |
WO2019224114A1 (de) | 2019-11-28 |
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