Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
  • B29C45/17—Component parts, details or accessories; Auxiliary operations
  • B29C45/76—Measuring, controlling or regulating
  • B29C45/766—Measuring, controlling or regulating the setting or resetting of moulding conditions, e.g. before starting a cycle
• • 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
  • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
  • B29C45/03—Injection moulding apparatus
• • 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
  • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
  • B29C45/17—Component parts, details or accessories; Auxiliary operations
  • B29C45/76—Measuring, controlling or regulating
  • B29C45/7693—Measuring, controlling or regulating using rheological models of the material in the mould, e.g. finite elements method
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
  • G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
  • G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
  • G05B13/0265—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric the criterion being a learning criterion
  • G05B13/028—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric the criterion being a learning criterion using expert systems only
• • 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
  • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
  • B29C2945/76—Measuring, controlling or regulating
  • B29C2945/76929—Controlling method
  • B29C2945/76939—Using stored or historical data sets
  • B29C2945/76946—Using stored or historical data sets using an expert system, i.e. the system possesses a database in which human experience is stored, e.g. to help interfering the possible cause of a fault
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
  • G05B2219/00—Program-control systems
  • G05B2219/10—Plc systems
  • G05B2219/14—Plc safety
  • G05B2219/14058—Diagnostic, using expert, knowledge based system
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
  • G05B2219/00—Program-control systems
  • G05B2219/20—Pc systems
  • G05B2219/24—Pc safety
  • G05B2219/24086—Expert system, guidance operator, locate fault and indicate how to repair
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
  • G05B2219/00—Program-control systems
  • G05B2219/30—Nc systems
  • G05B2219/32—Operator till task planning
  • G05B2219/32007—Operator is assisted by expert system for advice and delegation of tasks
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
  • G06F2119/18—Manufacturability analysis or optimisation for manufacturability

Definitions

• the invention relates to a method for operating a machine for processing plastics and other plasticizable materials according to the preamble of claim 1.
• CONFIRMATION COPY An operator is guided step by step through subsections of the setting process. Values for system-relevant process parameters are determined so that a basic setting is achieved quickly and reliably. At the beginning of a test phase, relevant parameters such as the flow properties of the molding compound, injection rate or melt temperature are provisionally determined and from this a characteristic for the flow behavior is determined. Based on this characteristic, the further basic setting takes place.
• No. 6,546,311 B2 discloses a method in which components already manufactured by the machine are measured and checked for their physical properties. In this case, an assignment to several process parameters such as nozzle pressure and nozzle temperature. On the basis of this information, an optimization of the already existing injection molding process then takes place. Thus, a basic setting of an injection molding process must first be programmed before this optimization process can take place.
• US Pat. No. 5,900,259 A discloses a method in which an optimization of the injection molding conditions is carried out by a plastic flow analysis on a virtual model of the molded part. There is a simulation of the molded part, wherein shape, cavities and sprue or the material properties may be previously known. The determination of the injection molding process is thus based on flow analyzes, which are carried out on a simulated component. The plastic flow analysis thus determines the shape design, ie the starting point is not the geometric data of the component.
• the present invention seeks to provide an alternative approach to the user-friendly device of a machine for processing plastics available.
• an injection molding of a plastic injection molding machine are no longer parameters that are given to the machine, but information about the molded part as a manufactured component or the mold cavity, on the basis of which the control of the injection molding machine with the software integrated in them knowledge about machine and principles of injection molding can determine the fundamentally required plant and process parameters for operation of the machine.
• the starting point is therefore the component.
• the manufacturing process of a molded part is characterized mainly by the knowledge of the geometry of the part and not determined by the expertise of the operator on the machine.
• the controller thus creates a basic setting of the system gene- and process parameters based on the geometry data of the molded part to be produced, as an experienced operator tries, the controller even more than the overall process already optimized. This also makes it possible for a non-specialist to commission the machine without parameter setting in such a way that a molded part with the given geometry data can be produced, ie without offline simulation calculations or test parts.
• the controller obtains geometric data about the component or injection part 13 and therewith a CAD data set which enables the controller, based on the molded part to be manufactured, to have installations and process parameters, e.g. in the form of a machine setting data set to determine and adjust. In conjunction with the material information, this results in setting parameters that enable the application of the technology, here the injection molding in general, for which a basic expert knowledge is required. Such an adjustment can usually only be carried out by an operator trained on the specific machine.
• the injection point if the shape is not yet created, also be influenced accordingly.
• the required cooling times and pressures can be calculated.
• the temperature required depends on the material to be used and the limits for its processing. This is a Ureingna based on the geometry of the component to be manufactured on the machine to determine how they can usually make only an experienced operator. As a result, the operator receives setting technology data for the initial production of a molded part based on the given geometry data and material data.
• the component information is transferred to a molding assistant of the controller, which calculates therefrom the plant and process parameters to be set, checks the plausibility of the parameters thus calculated, whether a component or molded part is to be produced therefrom, and finally takes over as setting.
• the plausibility check also includes the limits given on the machine, such as exceeding possible injection speeds or possible travel paths, for example, parts of the mold clamping unit or the injection mold. In the absence of information from the molding assistant, he seeks interactive contact with the operator for more information.
• the molding assistant could suggest to the operator, a screw conveyor with a different screw diameter to assemble the system.
• Further information is preferably the material which has an influence on the flow behavior and thus on the process parameters.
• such information or data from the design are above all the geometry of the molded part or the mold cavity and the arrangement of the gate geometry, thereby allowing the molding assistant to determine, for example, flow paths and flow velocities.
• the molding assistant can also calculate the optimum starting point for the given boundary conditions.
• an injection mold assistant can be provided, which additionally determines operating parameters for the operation of a particular injection mold, which are required together with the system and process parameters in order to produce the predetermined injection molding on the respective injection mold on this injection molding machine.
• a plausibility check is carried out, if appropriate, with further interactive contact with the operator.
• a quality assistant can be provided which, in particular, processes the required properties of the molded part to be produced and the associated tolerance ranges as information, interrogates them in addition and thereby reduces and process parameters and / or operating parameters for stability optimization of the process flow influenced.
• All assistants i. Molding assistant, injection mold assistant and quality assistant, can be assigned alone or together only a portion of the process, a part of the injection molding machine or a part property or part geometry of the molded part to the best possible sequence of the manufacturing process on the associated production plant with little required detail knowledge of the operator over the plant.
• FIGS. 1 is a schematic representation of injection molding machine and associated control with control unit
• Fig. 3 is a schematic representation of a gesture-controlled operation.
• Figure 1 shows schematically a machine for processing plastics and other plasticizable materials such as powdery and / or ceramic masses.
• the injection molding machine 10 has a mold clamping unit F for opening and closing an injection mold M having at least one mold cavity 12 for producing a molded part 13 corresponding to the shape of the mold cavity.
• the injection mold M is opened and the molded part 13 possibly ejected with its sprue 13 a from the mold cavity 12.
• Visible is also the gate geometry 14 of the mold cavity 12, via which plastifiable material is supplied from an injection molding unit S to the mold cavity 12.
• a controller 11 Assigned to the injection molding machine 10 is a controller 11 in which expert knowledge E about the operation of the injection molding machine and its possibly existing peripheral devices P as well as basic rules on the production of molded parts 13 in the injection molding is available. Using this expertise, a molded part 13 can be made as needed after interacting with an operator on the basis of injection molding parameters.
• a human-machine interface I is provided, which is made available, for example, by a screen with keyboard, a (multi) touch screen or other suitable means, such as voice input.
• Fig. 2 shows the sequence of the method. At the beginning of the process, the controller receives in step 100 information about the molded part or the mold cavity 12, in or in which the molded part 13 is to be produced.
• This information may be 3D data in a data format known to and controllable by the controller 10.
• the injection molding machine calculates in step 101 with the expert knowledge / model computer E the plant and process parameters required for the production of the molded part, wherein preferably following this calculation, the injection molding machine with the thus determined injection molding parameters according to step 105 is operated.
• the controller determines from the part to be manufactured which steps to make that part using which plant and process parameters required are.
• a molding assistant FTA is used within the controller 11.
• the information about the molded part 13 is made available to it in step 100, so that in step 101 it can calculate the injection molding parameters as plant and process parameters.
• the molding assistant then checks the thus determined injection molding parameters for plausibility, ie, whether with these injection molding parameters a molded part 13 with the given component information is to be produced on the injection molding machine 10.
• the result of this query shown in step 102 is either that the part is to be made, followed by the operation of the machine according to step 105 for the production of the molded part.
• step 103 If the molded part can not be produced with this information, an interaction takes place with the operator, ie via the man-machine interface I, the operator is requested to provide further information, the manufacture of the molded part 13 optionally with a change in plant and Allow process parameters or components of the system. If the operator can provide further information during the query in step 103, steps 100 to 102 are repeated. If the operator is unable to provide further information, the operator is informed in step 104 that the component as an injection molded part is available with the data, models and equipment available in this optimization step. gene components is not or only partially produced. Under certain circumstances, suggestions can be made to the operator as to what needs to be changed in the plant. nevertheless to be able to produce the molded part.
• Such further information can be, for example, information about the material to be processed, wherein the material is either given to the controller or the operator selects the material to be processed from an existing selection of materials known to the controller 11. This information is also used to calculate the plant and process parameters in step 101.
• the information about the geometry of the molded part 13 to be produced or of the mold cavity 12 is communicated to the molded part assistant.
• This information preferably also includes the gate geometry 14, since, with knowledge of the gate geometry 14, the controller 11 with its expert knowledge and model computer E from the geometry of the molded part 13, the flow paths, wall thickness and flow rate can calculate as well as required pressures by F doublwegner and volumes of injection quantity. The cooling times can also be calculated from the wall thicknesses. Volume and optionally material information also allow the calculation of the amount of material to be injected or the metering volume of the screw, etc.
• the operator is contacted interactively in order to obtain further information.
• This information can be after setting the Ureingnagna and the production of the first molded parts also more information from the machine, which then allow for repetition of the previous steps, an optimization. If further changes to the information are no longer possible, the operator is informed that the molded part with the associated injection molding machine can not be produced. If it can be produced on the machine, the machine is operated accordingly. An offline simulation of the molded part is not required.
• the controller may include an injection mold assistant SFA that processes information about the injection mold M.
• the geometry, structure and properties of the injection mold M can be transferred to the injection mold assistant SFA.
• This information can be, for example, the geometric structure of the injection mold, the number of cavities, the arrangement and design of the cooling channels or even information related to the opening path or the presence of any mechanical axes in the tool such as core pulls.
• operating parameters are then calculated by the injection mold assistant SFA in step 111. These operating parameters are in turn provided to the molding assistant FTA, which calculates plant and process parameters in step 101 with this additional information.
• a plausibility check may optionally be made here under interactive contact with the operator, preferably - as in Fig. 2 not shown - further information and information about the injection mold M may be based on this further information can be influenced both on the plant and process parameters as well as on the operating parameters.
• the machine for producing the molded part 13 is operated accordingly or informs the operator that the molded part 13 can not be produced on this machine in this way.
• controller may be assigned a quality assistant QA, wherein the controller 11 then the required quality characteristics of the produced
• Injection member 13 are provided with the associated tolerance ranges of information available. Here too, further information can be requested through an interactive contact with the operator.
• quality assistant QA influences the plant and process parameters and / or the operating parameters for stability optimization of the process flows, which is illustrated in steps 120 and 121. All assistants, ie the molding assistant FTA, the injection mold assistant SFA and the quality assistant QA fundamentally have an influence on the injection molding process, whereby they can influence the entire injection molding process or parts thereof. Likewise, they may affect only a portion of the components of the injection molding machine 10 and the peripherals P.
• the molded part 13 can also be virtually divided into parts, whereby the influence of the individual assistants on the sections of the component can be different.
• the aim is to obtain a process flow and a system parameterization, which is mainly determined by the knowledge of the geometry of the part to be manufactured in conjunction with the present in the control expert knowledge and model computer E and not by the expertise of the operator. This results in a deviating from the previous procedure sequence when setting the machine, because the starting point is the molded part 13 with its required properties, which the Ma learns about it and with the help of their assistants in the controller 11 decides how this is to be produced as a molded part.
• the injection mold assistant SFA ensures that the basic process of the injection molding process is calculated and parameterized on the basis of the tool geometry. It is also conceivable to use flow simulations which calculate process target profiles in relation to speed, pressure and temperature on the basis of the geometry of the molded part 13 together with material characteristics and coordinate them with the injection molding machine 10. Quality Assurance QA uses quality models derived from the geometry of the molded part 13 or other quality features, such as Strength or voids and the associated tolerance allocations make a stabilization optimization of the process settings.
• the suggestions which result from the processing according to the method can also be reflected back to the operator in a plant-specific manner.
• the man-machine interface I as shown schematically in FIG. the connection to the machine image or pictorial to the components of the machine are produced.
• the components which can still be usefully used on the machine after the development of the system and process parameters as well as the operating parameters can be offered to the operator for selection and subsequent possibly further parameterization by the molding assistant FTA, e.g. offers specific setpoints. The selection can then be made e.g.
• the controller checks in the background whether these actions are useful for the production of the molded part 13.
• the pictorial representation combined with the intuitive gesture, leads directly to image components for better usability.
• the operator is offered on a man-machine interface I the hardware selection options on the machine, which he can add by gestures and then further parameterize as needed.

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• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Mechanical Engineering (AREA)
• Artificial Intelligence (AREA)
• Health & Medical Sciences (AREA)
• Computer Vision & Pattern Recognition (AREA)
• Evolutionary Computation (AREA)
• Medical Informatics (AREA)
• Software Systems (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Automation & Control Theory (AREA)
• Injection Moulding Of Plastics Or The Like (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

Country Status (9)

Cited By (3)

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Citations (5)

Family Cites Families (18)

• 2013
  • 2013-05-15 DE DE102013008245.5A patent/DE102013008245A1/de not_active Withdrawn
• 2014
  • 2014-05-13 US US14/891,402 patent/US11267179B2/en active Active
  • 2014-05-13 CA CA2910499A patent/CA2910499C/en active Active
  • 2014-05-13 JP JP2016513251A patent/JP6479771B2/ja active Active
  • 2014-05-13 PL PL14728825.2T patent/PL2953778T5/pl unknown
  • 2014-05-13 WO PCT/EP2014/001283 patent/WO2014183863A1/de not_active Ceased
  • 2014-05-13 CN CN201480028565.9A patent/CN105228808B/zh active Active
  • 2014-05-13 HU HUE14728825A patent/HUE045694T2/hu unknown
  • 2014-05-13 EP EP14728825.2A patent/EP2953778B2/de active Active

Patent Citations (5)

Non-Patent Citations (2)

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