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WO2012038491A1 - Procédé de vérification d'un processus de production enregistré pour une ou plusieurs machines fonctionnant en processus de production cyclique - Google Patents

Procédé de vérification d'un processus de production enregistré pour une ou plusieurs machines fonctionnant en processus de production cyclique Download PDF

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Publication number
WO2012038491A1
WO2012038491A1 PCT/EP2011/066468 EP2011066468W WO2012038491A1 WO 2012038491 A1 WO2012038491 A1 WO 2012038491A1 EP 2011066468 W EP2011066468 W EP 2011066468W WO 2012038491 A1 WO2012038491 A1 WO 2012038491A1
Authority
WO
WIPO (PCT)
Prior art keywords
sequence
cycle
machine
time
screen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2011/066468
Other languages
German (de)
English (en)
Inventor
Manfred Hausmann
Erich Knobel
Daniel Müller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Netstal Maschinen AG
Original Assignee
Netstal Maschinen AG
Maschinenfabrik und Giesserei Netstal AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Netstal Maschinen AG, Maschinenfabrik und Giesserei Netstal AG filed Critical Netstal Maschinen AG
Publication of WO2012038491A1 publication Critical patent/WO2012038491A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C45/762—Measuring, controlling or regulating the sequence of operations of an injection cycle
    • 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
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/406—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by monitoring or safety
    • G05B19/4069—Simulating machining process on screen
    • 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
    • B29C2045/7606—Controlling or regulating the display unit
    • 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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/768—Detecting defective moulding conditions

Definitions

  • the present invention relates to a method for checking a stored production sequence for one or more machines with a cyclical machine operating sequence, in particular an injection molding machine, according to the preamble of claim 1.
  • machine processes for example the production process
  • graphical modeling it is possible, in particular, to visualize the dependencies between the individual command functions and to make the cyclic process comprehensible to the operator overall.
  • the individual process steps during the running machine operation are partially also animated graphically, so that you can track and follow the program steps just performed on a screen device.
  • a fully modeled sequence also shows the sequence rules very well.
  • an operator it is often possible for an operator to detect collisions in the time sequence, for example, of two or more machine components.
  • the detection of collisions "with the naked eye” proves to be difficult when a complex production process is due to an interaction of a plurality of machine components or the collision can not be easily recognized by the eye, for example, due to only a slight temporal overlap of actuation profiles of machine components.
  • FIG. 2 shows a flow diagram on a screen device 10, in which command functions for machine components to be executed by means of "icons” are represented in the programmed sequence and the control flow (also branches) is indicated by means of arrows
  • command functions for machine components to be executed by means of "icons” are represented in the programmed sequence and the control flow (also branches) is indicated by means of arrows
  • control flow also branches
  • possibly parallel or possibly overlapping processes can be recognized, but an exact temporal relationship can not be seen from the illustration in Fig. 2.
  • the impression is made suggests that the functions denoted A and B will occur simultaneously and in parallel, but such a temporal relation between process steps A and B is not given.
  • a so-called dry run alone usually does not help the operator; For example, it can not usually check the logical process or the setup of the correct synchronizations.
  • correct interaction of all machine components is not possible and, in particular, the immediate start of the production sequence after programming can have devastating consequences for the machine or machine components, the handling device and the tool.
  • Object of the present invention is to provide a method which allows a review of a programmed production process, in particular, whether a machine sequence is programmed correctly, logically, collision and trouble-free.
  • an idea of the present invention is to run in a simulation mode of the machine or machines (ie without the actual operation of the machine itself) the production process for at least one cycle and thereby the production process on the basis of time-scale assignments and in particular taking into account Collision rules to check whether the temporal sequence of the command functions is correct for the totality of the temporal actuation profiles in their temporal correlation and a collision of two or more machine components, in particular of two or more machine components of a (single) machine. The check is thus carried out before the first productive operation of a machine with a newly stored or a changed production process. Even the true-to-scale representation of the production process based on model data enables the operator to detect collisions.
  • An injection molding machine has several driven or drivable machine components, such as:
  • the temporal actuation profiles or the movement profiles of the individual axes of an injection molding machine must be coordinated with one another in the productive operation of the injection molding machine in a specific manner. This requires the correct chronological sequence of command functions in order to avoid a collision of two or more driven machine components during their movement.
  • the advance of the plasticizing screw and thus the injection into a mold may only take place when the mold halves are closed and the plasticizing and injection unit is docked to the sprue bush of the mold is.
  • the ejector which may only be operated when the mold is open. So it depends on the right operating profile of this machine component with the right starting point and the correct time extension of the operation for each driven machine component.
  • the temporal behavior of the individual machine components and their temporal correlation must be known.
  • a temporal actuation profile with a starting point and a temporal extent is created (in particular calculated);
  • the temporal actuation profiles are set according to the production process in a temporal correlation with each other. It is based on the fact that the actuation profiles with their temporal sequences from the command functions, the production parameters and the setpoints on the basis of a stored model (also model calculation) determine - in particular calculate - leave.
  • the actuation profiles for individual machine components can be determined by means of controller models for the existing controllers of the individual machine components.
  • actuation profile for a machine component, which may be the case for some auxiliary components (eg for core pullers in molds of injection molding machines), then a query would have to be started, via which the operator will need necessary values for the actuation profile (eg time extension) the actuation) for this machine component.
  • actuation profiles and their temporal correlation are the prerequisites for checking whether the various process steps are started at the right time and are finished at the right time. All in all, it is necessary to completely store and program a sequence or partial sequence, because only then can knowledge of the corresponding entirety of the command functions, their time extension and their influence on one another be determined for the entire machine operating sequence. For this purpose, the necessary production parameters and setpoints, in particular those which have a temporal influence on the machine operating sequence, must be specified.
  • the simulation and verification of the production process for the operator is made visible on a screen.
  • This visualization is preferably carried out in the time scale representation of a production process.
  • the command functions can be scaled according to the time extent and displayed in a time-correct length. This can be done, for example, such that at the beginning of a command function shown in particular bar graphically indicated with a starting point in the form of a command icon, which indicates the function and then continues until reaching the correct time end and then ends.
  • a command function shown in particular bar graphically indicated with a starting point in the form of a command icon, which indicates the function and then continues until reaching the correct time end and then ends.
  • the operator can see which process steps are being performed in parallel and which process steps are being carried out sequentially.
  • incorrect time sequences or collisions of machine components are preferably displayed on the screen, so that the operator can recognize the problematic timing in the production process as well as the problem itself; It can then be seen which machine components interfere with each other. Also, in a preferred embodiment on the screen buffer times that are not directly in the cycle time, thus are not relevant cycle time and remain with regard to the cycle time as unused time, be displayed separately.
  • a progress line is displayed for the diagram on the screen, which indicates the position at which the machine is currently present during the execution of the sequence program, the operator can immediately see, with regard to the screen, in which working position the machine is currently located and which Time since the beginning of the cycle has already expired. Furthermore, he can recognize which further commands and functions still have to be carried out during the remaining cycle. This type of view is called progress mode. In particular, he can also recognize which commands would run parallel in time or overlap in time. From this, the machine can - if the necessary knowledge has been deposited (for example in the form of collision rules) - or the operator can detect possible collisions.
  • a separate view option is to realize a so-called roll mode, in which the current flow position is locally fixed on the screen.
  • the sequence program as it were, rolls in accordance with the processing, for example in the form of a band which runs from one side to the other side over the screen.
  • This type of representation is helpful in continuous operation of the machine.
  • it can also be provided to switch between the different types of views.
  • FIG. 1 is a schematic representation of a screen with a flowchart with exact temporal correlation of the programmed command functions according to an embodiment of the invention
  • Fig. 3 is a flowchart in the manner of a KO display according to the prior art.
  • a screen device 10 is shown in Fig. 1, on which the operation and production process is shown in the injection molding machine.
  • a production process in an injection molding machine is completely entered into the control thereof. This can be done by programming or by reading a known production process and its modification. Complete programming requires the knowledge of all production parameters and setpoints. With regard to the programming itself, reference is made to WO 2006/089451.
  • the controller models On the basis of a model stored in the control of the machine - for example, the controller models for those involved in the production process To machine components operated in the course of the production process - the actuation profiles for all machine components included in the production process are now calculated.
  • the actuation profiles include the starting points as well as the time extension of the operation.
  • the missing values for their creation must be manually retrieved and manually entered by an operator by means of an input device.
  • the synchronization and interlocks are determined from the programming.
  • the actuation profiles of the machine components involved in the production process are then set in temporal correlation with each other according to the programmed production sequence, whereby the entire production process with the respective starting point for an actuation of a machine component and its time extension is known.
  • the entire production process with the respective starting point for an actuation of a machine component and its time extension is known.
  • machine components overlap in their operation or otherwise correlate in time.
  • a logically correct chronological sequence is not given, for example, if the injection of a melt material takes place in an injection molding machine without the mold having been closed. Also, it must not be that an ejector is actuated when the plastic melt injected in an injection molding machine, but the tool is not yet open.
  • the simulation process can be displayed in a corresponding graphic on a screen.
  • the commands preferably run in the time provided and calculated for this purpose.
  • the icon 50 indicates the start of an injection molding cycle.
  • the icon 52 indicates the end of an injection molding cycle. Once this process has been completed, the process starts again at the beginning of the cycle (icon 50). Between these two markings (icons 50 and 52), the entire sequence of a cycle is modeled in temporally correct correlations of the command functions with each other. The associated actuation profiles are calculated and stored in the control.
  • each individual command function has a bar, at the beginning of which there is a command icon indicating the function, and which is extended by means of a bar until the (temporal) end of the process step.
  • the injection mold is first closed (icon with reference numeral 54). Subsequently, the plasticizing and injection unit is moved up to the tool (icon with reference numeral 56) and the injection and Nachbuchvorgang performed (icon with reference numeral 58). Next, a cooling operation is performed (icon with reference numeral 60) extending to a time when the tool is opened (icon with reference numeral 62). Parallel (and shown in Fig. 1 below) are still (not specifically designated by reference numerals) further steps such as Screw retraction, opening the plasticizing, the metering of a plastic melt, the lifting of the plasticizing and injecting the tool and the operation of the ejector carried out. These steps are displayed in parallel with a corresponding dependency branch. Attention is paid to the correct temporal correlation of the individual command functions, which are displayed in the correct way and stored in the machine control, which can be recognized by the time axis (in the picture below).
  • the cooling time in the mold is taking place after the holding pressure and at the same time the plasticizing and injection unit (see lower bar) is again metering plastic melt.
  • the progress line 26 travels either via the screen setup (progress mode) or alternatively it remains fixed and the other display moves under the progress marker from right to left (roll mode).
  • a progress line 26 now travels over the cycle shown on the screen.
  • the controller uses the stored collision rules to check the correct chronological sequence and a possible collision of two or more machine components.
  • indication 22 indicates the time extent of the entire cycle, the cycle time being determined by the so-called (time-) critical path 20, which contains the cycle sequence determining command sequence.
  • This critical path allows the operator to recognize those command functions that determine cycle time. By changing these command functions, he can change the cycle time.
  • reference numeral 28 indicates a period serving as a buffer. In the present case exists between the end of the command function shown and the step in which this function must be completed before another command function, for example, the start of bringing the plasticizing and injection device to the tool (reference numeral 56), a free time phase 28, the does not affect the cycle time and thus represents a buffer period.
  • the operator can check the programming of a production process and recognize an incorrect programming of the production process without the machine actually being operated and being in danger of being damaged in case of incorrect programming in production mode.
  • the display can be enlarged or reduced on the screen (zoom functions).
  • Another preferred function is the representation of all machine components that are active in the current simulation time. In this way you can see collisions very well.
  • Other processes such as the previous cycle, a reference cycle, etc., can also be displayed.
  • it is possible to change the configuration of the graphic for example to select whether only the current cycle or the current as well as the previous cycle or parallel reference cycle should be displayed.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé utilisé pour vérifier un processus de production enregistré pour une ou plusieurs machines fonctionnant en processus de production cyclique, procédé selon lequel un processus de production est enregistré pour un cycle, au moyen de fonctions de commande. Tous les paramètres de production et valeurs de consigne requis sont prédéfinis, pour chaque élément de machine menés, sur la base des fonctions de commande, des paramètres de production et des valeurs de consigne, un profil d'actionnement temporel qui présente un point de départ et une durée étant établi, en particulier calculé, et les profils d'actionnement temporels étant mis en corrélation temporelle mutuelle conformément au processus de production. Afin d'éviter tout risque de programmation erronée et par conséquent de dysfonctionnement de la ou des machines, dans un mode de simulation de la machine ou des machines, le processus de production est appliqué pendant au moins un cycle et à cette occasion, une vérification intervient alors, conformément à des règles de collision mémorisées, afin de voir si la succession temporelle des fonctions de commande est pertinente pour l'ensemble des profils d'actionnement temporels dans leur corrélation temporelle et si une éventuelle collision entre deux éléments de machine ou plus est constatée.
PCT/EP2011/066468 2010-09-22 2011-09-21 Procédé de vérification d'un processus de production enregistré pour une ou plusieurs machines fonctionnant en processus de production cyclique Ceased WO2012038491A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010046274.8 2010-09-22
DE102010046274A DE102010046274A1 (de) 2010-09-22 2010-09-22 Verfahren zur Überprüfung eines hinterlegten Produktionsablaufes für eine oder mehrere Maschinen mit einem zyklischen Maschinenbetriebsablauf

Publications (1)

Publication Number Publication Date
WO2012038491A1 true WO2012038491A1 (fr) 2012-03-29

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DE (1) DE102010046274A1 (fr)
WO (1) WO2012038491A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019117092A1 (de) * 2019-06-25 2020-12-31 Kiefel Gmbh Produktionsmaschine mit steuerungsprogramm
US11397563B2 (en) * 2017-07-21 2022-07-26 Husky Injection Molding Systems Ltd. Programming a protection device for a molding machine
CN114995313A (zh) * 2022-06-09 2022-09-02 佛山技研智联科技有限公司 基于工业互联网的数图联动显示方法、装置、设备及介质

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Publication number Priority date Publication date Assignee Title
DE102015222164B4 (de) * 2015-11-11 2025-01-02 Kuka Roboter Gmbh Verfahren und Computerprogramm zur Erzeugung einer grafischen Benutzerschnittstelle eines Manipulatorprogramms
JP7042674B2 (ja) * 2018-03-29 2022-03-28 住友重機械工業株式会社 射出成形機の操作用表示装置および、射出成形機
JP2020157666A (ja) * 2019-03-27 2020-10-01 日精樹脂工業株式会社 射出成形機の動作のプレビュー表示機能

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EP0573912B1 (fr) 1992-06-12 1996-04-10 Karl Hehl Méthode de commande d'une presse d'injection
WO2001067193A2 (fr) * 2000-03-06 2001-09-13 Siemens Aktiengesellschaft Dispositif et procede pour introduire des parametres pour machines et pour effectuer des simulations et des observations
DE10246925A1 (de) 2001-10-18 2003-04-30 Engel Gmbh Maschbau Verfahren und Einrichtung zur Steuerung einer Spritzgiessmaschine
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WO2006089451A1 (fr) 2005-02-28 2006-08-31 Netstal-Maschinen Ag Procede pour la commande et l'utilisation d'une cellule de production et dispositif de commande
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DE102006043390B4 (de) * 2006-09-15 2010-05-27 Dmg Electronics Gmbh Vorrichtung und Verfahren zur Simulation eines Ablaufs zur Bearbeitung eines Werkstücks an einer Werkzeugmaschine
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Publication number Priority date Publication date Assignee Title
EP0573912B1 (fr) 1992-06-12 1996-04-10 Karl Hehl Méthode de commande d'une presse d'injection
WO2001067193A2 (fr) * 2000-03-06 2001-09-13 Siemens Aktiengesellschaft Dispositif et procede pour introduire des parametres pour machines et pour effectuer des simulations et des observations
DE10246925A1 (de) 2001-10-18 2003-04-30 Engel Gmbh Maschbau Verfahren und Einrichtung zur Steuerung einer Spritzgiessmaschine
DE10307261A1 (de) * 2003-02-20 2004-09-09 Siemens Ag Programmierplattform zur Erstellung von Teileprogrammen bei Werkzeug- oder Produktionsmaschinen
DE10308816A1 (de) * 2003-02-27 2004-05-19 Siemens Ag Ikone und Schrittikonendarstellung zur graphischen Visualisierung von aufgabenorientierten Schritten
WO2006089451A1 (fr) 2005-02-28 2006-08-31 Netstal-Maschinen Ag Procede pour la commande et l'utilisation d'une cellule de production et dispositif de commande
WO2009105797A1 (fr) * 2008-02-26 2009-09-03 Keba Ag Configuration d'opérations de machines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11397563B2 (en) * 2017-07-21 2022-07-26 Husky Injection Molding Systems Ltd. Programming a protection device for a molding machine
DE102019117092A1 (de) * 2019-06-25 2020-12-31 Kiefel Gmbh Produktionsmaschine mit steuerungsprogramm
US12078983B2 (en) 2019-06-25 2024-09-03 Kiefel Gmbh Production machine comprising a control programme
CN114995313A (zh) * 2022-06-09 2022-09-02 佛山技研智联科技有限公司 基于工业互联网的数图联动显示方法、装置、设备及介质

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