EP1590756A2 - Unite de maintenance/service et procede de gestion assistee par ordinateur de maintenance et/ou service - Google Patents

Unite de maintenance/service et procede de gestion assistee par ordinateur de maintenance et/ou service

Info

Publication number
EP1590756A2
EP1590756A2 EP04707859A EP04707859A EP1590756A2 EP 1590756 A2 EP1590756 A2 EP 1590756A2 EP 04707859 A EP04707859 A EP 04707859A EP 04707859 A EP04707859 A EP 04707859A EP 1590756 A2 EP1590756 A2 EP 1590756A2
Authority
EP
European Patent Office
Prior art keywords
maintenance
service
axis
machine
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04707859A
Other languages
German (de)
English (en)
Inventor
Erich Knobel
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 EP1590756A2 publication Critical patent/EP1590756A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C45/1753—Cleaning or purging, e.g. of the injection 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling

Definitions

  • the invention relates to a method for computer-aided maintenance and / or service management of injection molding machines, and also to a maintenance / service unit for injection molding or die casting machines.
  • Injection molding machines like all other machines, e.g. Vehicles are serviced periodically.
  • vehicle service A distinction is made between oil change service, inspection service and thirdly special services, such as exhaust gas tests, which are required by law.
  • an inspection service be carried out every 12 months for a certain type of vehicle with a petrol engine. This always includes an oil change service. If 150,000 km are reached before the end of a year, an oil change service is required. If the oil change is only a few months before the inspection service, it can be advantageous to have the inspection service carried out immediately. If the annual mileage is more than 30,000 km, the inspection service should not be carried out after one year, but after 30,000 km. The brake fluid must be changed every 24 months.
  • Every maintenance interval should be dimensioned so that service work begins shortly before a possible malfunction.
  • the manufacturer is interested in the fact that the maintenance intervals are so short that there is a high probability that there will be no breakdowns, especially no damage. The two interests may be far apart. In practice, these can only be used satisfactorily through compromise recommendations for both sides.
  • service is generally understood to mean a specific intervention in the machine.
  • maintenance is normally carried out by specialist personnel from the production company, since the maintenance work does not require any intervention in the mechanics of the machine.
  • maintenance can mean oil changes, lubrication, cleaning, checking, referencing and calibrations.
  • the service specialist is of course able to carry out all maintenance work. However, its central task is to intervene in the machine, be it in the mechanics of the hydraulics, the classic electrical components and the overall control of the machine, including the electronic side. An important task for the service specialist is to remedy faults, breakdowns or failures in the regular course of the machine.
  • the proposed solution contains a central shift calendar for recording the running times and an operating calendar with the individual operating times for each machine.
  • the real running time of the machines is recorded and documented by order and maintenance-related downtimes.
  • Detailed inspection instructions are stored.
  • An inspection order is generated automatically using freely selectable inspection data.
  • the solution also allows peripheral devices to be included in maintenance planning.
  • the object of the invention was now to look for a practical solution for the maintenance and service of injection molding or die casting machines, which if possible existing experience and above all, both sides, the manufacturer and the user, offers the greatest possible advantages.
  • the method according to the invention is characterized in that functional units, in particular individual machine axes, form maintenance / service modules, and that service instructions and / or maintenance forecasts are created based on the maintenance / service modules.
  • the maintenance / service unit for injection molding machines is characterized in that it has storage means with storage spaces, each of which contains functional units, in particular machine axes, as maintenance / service modules for taking over and storing all maintenance-relevant data, in particular also maintenance / service module-specific data, and computing means for Continuous updating of a theoretical maintenance guide and / or service instructions to support service diagnoses based on the specific mode of operation and the operating state.
  • the inspection planning is based on a concept of central order placement for the work to be carried out.
  • the new invention emphasizes the concrete situation on site and builds on the subsidiarity model. Every intervention and also the drawing and updating of animations should be "managed" at the machine level.
  • the new invention builds on the core idea:
  • the new invention allows a completely new approach to dealing with maintenance / service and troubleshooting work, as is no longer economically possible with an absolute separation of maintenance and service.
  • An injection molding machine basically consists of several machines, which must be optimally coordinated. In contrast to many other machines, individual functional units, such as the spray axis and the form-fit axis, have their own drives and different working cycles. The positive locking axis is moved with each injection cycle to release the injected part. In many applications this also applies to the spray axis to a limited extent; in other applications, the spray axis remains pressed against the mold for a whole day.
  • an injection molding machine is designed for a certain closing force. The injection molder decides whether he uses the closing force to a certain extent or whether he respects a reserve with a view to minimizing wear.
  • the corresponding information is on the local control of the machine again after changing parts refreshed.
  • troubleshooting is supported with fault diagnosis tools.
  • the documentation is searched locally (on the machine control), if the information is insufficient, remote maintenance can be requested from the manufacturer or more information. In this case, important information about the error is sent directly to the manufacturer with the request (the customer can confirm the sending of the error data with an acknowledgment).
  • an electronic operating manual is created for each production machine, which e.g. can consist of five manuals: operator manual, programming manual, service maintenance manual and handling manual and spare parts catalog.
  • the new solution preferably has computer-aided management with data storage, including an electronic service maintenance manual with pictorial representations, such that a service maintenance order can be called up electronically on the screen in relation to the specific service or maintenance action.
  • the machine also has an operating device with a contact screen for displaying information blocks simply by touching the contact screen. When starting up, these can be displayed in the sense of Windows and e.g. the desired information is called up in stages, e.g. in this order:
  • the spare parts inventory can be checked immediately and, if necessary, the required parts can be procured via an electronic spare parts catalog or the spare parts inventory can be planned.
  • the operator terminal not only the higher-level service / maintenance management areas such as planning, appointments, service ⁇ / maintenance manual as well as spare parts list and spare parts inventory are shown. It is also possible to call up the specific service / maintenance activities with all possible links on the operator terminal and, in the event of an action being carried out, be it as a structural intervention or as a follow-up or update of an animation using the input keyboard.
  • the electronic spare parts catalog preferably has the following works: manuals, diagrams (electrical, water, pneumatic, hydraulic, etc.), descriptions, parts lists, drawings, 3D views / 3D animations. All of these documents are linked to each other (using a unique key, e.g. BMK -> resource ID) and you can navigate between the individual documents. If a part is identified, an order can be triggered directly or the inventory in the manufacturer's warehouse can be queried. A kind of electronic shopping cart is proposed. It is important that the information can also be searched by means of direct jumps (e.g. with BMK equipment identifications according to DIN), material numbers, designation, dimensions, etc.
  • direct jumps e.g. with BMK equipment identifications according to DIN
  • maintenance intervals are preferably specified on the basis of operating hours and / or operating factors, a maintenance forecast being continuously drawn up with a short, medium and long-term forecast.
  • a maintenance forecast being continuously drawn up with a short, medium and long-term forecast.
  • axis is understood to mean a complete mechanical assembly with a drive motor, overdrive or gearbox and associated mechanical components, which belong to the same functional group.
  • At least two categories of maintenance intervals be specified for each maintenance module: "Maintenance interval known, maintenance interval unknown", - the maintenance forecast being predefined in the category maintenance interval and the unknown in the maintenance interval category. Maintenance forecast is calculated at a later date based on the specific operation.
  • an operating factor is specified and a forecast maintenance interval, including the expected mode of operation during the operating period, is defined and a maintenance message is created for maintenance work that is to be carried out immediately.
  • Dabe can make a short-term forecast, which e.g. 1 to 3 months and a medium-term forecast, which comprises 1 year, and a long-term forecast as the theoretical maximum interval.
  • a theoretical maintenance forecast is set for each component that is to be serviced based on experience, based on an average load.
  • Computing means are provided so that the intended maintenance interval can be checked with the operating factor from the first start-up and a current maintenance forecast can be continuously determined.
  • Service factor BF cycle time theoretical design grad load factor of the axis cycle time actual value 0 that of the functional unit
  • the operating factor takes particular account of the peculiarity of injection molding and die casting machines.
  • the cycle time varies from product to product and from machine to machine and is usually between 1 second and 60 seconds. This means that the "production pace" can differ in a ratio of 1:60, which is different from most other industrial sectors.
  • the problem of the cycle time is forked in that a theoretical cycle time is assumed, for example according to the delivery guarantee, and this is set as a ratio to the actual cycle time during operation.
  • the degree of loading is determined for each functional unit.
  • the first time as a theoretical value and then with ongoing tracking as a concrete load factor. Every structural intervention influencing the maintenance interval is registered and taken into account for the next maintenance interval or the following maintenance intervals.
  • the maintenance unit is characterized in that it has display means and protocol processing means:
  • An electronic maintenance manual is very particularly preferably integrated in the maintenance / service unit or the maintenance unit is combined with an electronic maintenance manual.
  • the combination of the maintenance unit with the maintenance manual has the advantage that the maintenance manual emphasizes a specialty with pictures and text, which significantly improves speech communication. This allows maintenance and service at the lowest level to be largely carried out by the operating staff, regardless of any language skills. This opens up completely new possibilities.
  • the memory / computer means can thus have sufficient processing power, for example by entering the most important terms in any language, at the same time as the pictorial representation of the object or the function.
  • the storage and computing means have means for displaying the maintenance work to be carried out with a deadline for generating an alarm when the deadline for the specified maintenance work is exceeded, and also program parts for stopping the machine if there is an acute risk of machine damage due to the lack of maintenance.
  • the maintenance / service unit have hardware means in the sense of a "tachograph" with all the stored data for the theoretical and the concrete maintenance forecasts as well as for the actual interventions or machine changes.
  • the entire computer-aided management can be constructed in a network-like manner in such a way that it has interfaces for on-site display, for central operational management and for communication of the data between user and manufacturer of the machine, in particular with a view to optimizing maintenance.
  • the new solution thus enables the division of labor in the injection molding plant, but also in communication with the manufacturer, to be optimized, e.g. by Decide for a service work intervention can be made directly on the machine.
  • cost decisions e.g. for spare parts, can be planned and decided with greater transparency at the management level.
  • the actual execution of service work at management level can be continuously monitored.
  • FIG. 4 shows an example for the representation of a maintenance / service task, combined with an electronic maintenance manual and one
  • FIG. 5 shows a simplified example of maintenance planning
  • 6 shows the display of emergency service switches
  • FIG. 7 simplifies the oil level check
  • FIG. 8 shows a first example of a functional unit, namely the complete one
  • FIG. 9 analogous to FIG. 8, the positive connection as a maintenance / service module;
  • Figure 10 shows the column adjustment and Figure 11 in an exploded view;
  • FIG. 12 shows an inspection order using the example of a format change for CD
  • Figures 13, 14, 15 and 16 each have different inspection orders, Figure 13 daily, Figure 14 weekly, Figure 15 monthly, Figure 16 in the quarter; 17 shows an image on the screen, which is a display for checking certain
  • FIG. 1 shows, in a highly simplified manner, the visualization of maintenance displays in the Windows concept with the window technology on the operating level. Only three examples are shown: maintenance appointments, maintenance orders and service work.
  • the representation corresponds to the operator terminal, i.e. for the machine operator.
  • the program can be designed so that the operator has to call up the maintenance status every day or for each shift during shift operation before the actual production begins. The operator uses the time that is required for warming up, for example. It is important that error messages, service work and the maintenance dates are not only displayed according to Figure 2.
  • the maintenance appointment results in one or possibly many maintenance orders, which must be completed as specific maintenance work and acknowledged as completed via the operator terminal. In the case of three maintenance / service orders in FIG.
  • the execution of the maintenance or service can be monitored at a higher-level control body and, if necessary, enforced via an instruction.
  • a very important core point of the new solution is the support for maintenance and service, in the sense of a service or maintenance assistant, as shown in FIG. 4, which shows the corresponding terminal displays.
  • the "Maintenance tasks" 1 display is shown in a reduced form at the top left of the picture.
  • the operator prints on the field spraying from December 10th and field 2 shows the specific maintenance task "Change grease depot guides 1 '.
  • the job is clear. However, if he has trouble, he presses the appropriate field and receives the display 3. He now enters the electronic maintenance manual and receives the information: injection unit, unit guides, relubrication of the carriages ..
  • FIG. 4 and Fig. 5 generally show the location (Fig. 5) using an entire injection molding machine 10, as well as the specific lubrication points (Fig. 4), so that the work can be recognized and carried out effortlessly. He touches the point marked with a point again and receives the component on a larger scale (Fig. 6) In both steps, picture 7 appears, namely the relevant information from the spare parts list.
  • Figure 8 shows the supplier for a spare part and Figure 9 provides the necessary data for a replacement order.
  • FIG. 5 shows the emergency and service switches.
  • FIG. 6 shows that the operator is in complete dialogue with the operator terminal for the maintenance of his machine. He receives all the information he needs for his machine:
  • FIGS. 5 and 6 each show text blocks which, however, can also be made available acoustically in the language of the operator, for example with video. It can thereby video recordings or any animations, sequences of images or the like are used, whereby animations are understood to mean 3D image graphics, real video, interactive presentation, DVD as well as all image formats commonly used today such as the format MPG3 or MPG4.
  • Figure 7 shows the maintenance planning (Figure 11) as another example, also aligned to the respective maintenance / service modules.
  • Table 12 shows one possibility of subdividing the functional units.
  • Maintenance planning is primarily used for production planning. Larger maintenance / service orders can be identified, which require a production break of hours or days.
  • Arrows 13 indicate that individual maintenance / service tasks must be carried out more quickly if an increased load is determined.
  • FIG. 11 only indicates that, on the one hand, a theoretical maintenance plan is created and this is continuously adapted depending on the operating conditions, by changing the maintenance intervals.
  • FIGS. 8, 9 and 10 show various functional units in the sense of examples.
  • FIG. 8 shows an entire injection unit as a module. However, this can be divided even more finely into
  • Figure 9 shows the form fit. Here too, finer subdivisions can be made, depending on the machine type:
  • FIG. 10 shows the column adjustment axis and FIG. 11 shows the form fit and the column adjustment axis and FIG. 11 shows the form fit and the column adjustment in an exploded view.
  • FIG. 12 A further service aspect is shown in FIG. 12, namely an inspection after each format change in CD injection molding machines.
  • Figures 13, 14, 15 and 16 show the specific inspection instructions with corresponding time intervals: daily, weekly, monthly or quarterly ( Figure 16).
  • the program structure can be made so that each individual warming order is shown individually in the functional group or, if necessary, also across functional groups, which is particularly true for oils and greases. However, this does not change the desired basic structure based on maintenance / service modules.
  • FIG. 17 shows an image on the screen and is a display for checking certain processes and can be used as diagnostic means for troubleshooting in the event of a malfunction.
  • log log of all messages and alarms.
  • Another example is alarm diagnostics with an inverter.
  • the status display and error messages of the inverters are also possible.
  • the third example shows an alarm message status line.
  • the current error messages and information are the current error messages and information.
  • the protective cover can be opened
  • the SERVICE SWITCH (2) may only be operated when all axes are at a standstill. ° The SERVICE SWITCH (2) can be locked with a padlock against unauthorized persons
  • the indicator lamp (3) lights up when the SERVICE SWITCH is in the "0" position.
  • a sight glass is installed in the joint of the lever of the injection unit for the plasticizing gear.

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  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Strategic Management (AREA)
  • Mechanical Engineering (AREA)
  • Economics (AREA)
  • Manufacturing & Machinery (AREA)
  • Entrepreneurship & Innovation (AREA)
  • Human Resources & Organizations (AREA)
  • Operations Research (AREA)
  • Marketing (AREA)
  • Game Theory and Decision Science (AREA)
  • Quality & Reliability (AREA)
  • Tourism & Hospitality (AREA)
  • Physics & Mathematics (AREA)
  • General Business, Economics & Management (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Educational Administration (AREA)
  • Development Economics (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé ainsi qu'une unité de maintenance pour la gestion assistée par ordinateur de maintenance et/ou de service concernant des machines de moulage par injection. Selon l'invention, des axes de machine individuels constituent des unités fonctionnelles formant des modules de maintenance/service. Des pronostics de maintenance sont établis avec l'assistance des modules de maintenance/service. Cette unité de maintenance peut également être utilisée pour des machines de moulage sous pression. Grâce à l'invention, une planification de maintenance pure ou une assistance au service optimale peuvent être utilisées de façon nettement séparée ou bien de façon combinée. Comme moyens fondamentaux du système selon l'invention, on peut utiliser un manuel de maintenance/service électronique, des listes de pièces détachées avec formulaires de commande, ainsi que des concepts complets pour les diagnostics d'erreurs, ces éléments fondamentaux pouvant être complètement mis en réseau électroniquement.
EP04707859A 2003-02-04 2004-02-04 Unite de maintenance/service et procede de gestion assistee par ordinateur de maintenance et/ou service Withdrawn EP1590756A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH1592003 2003-02-04
CH159032003 2003-02-04
PCT/CH2004/000058 WO2004070490A2 (fr) 2003-02-04 2004-02-04 Unite de maintenance/service et procede de gestion assistee par ordinateur de maintenance et/ou service

Publications (1)

Publication Number Publication Date
EP1590756A2 true EP1590756A2 (fr) 2005-11-02

Family

ID=32831662

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04707859A Withdrawn EP1590756A2 (fr) 2003-02-04 2004-02-04 Unite de maintenance/service et procede de gestion assistee par ordinateur de maintenance et/ou service

Country Status (2)

Country Link
EP (1) EP1590756A2 (fr)
WO (1) WO2004070490A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7555376B2 (en) * 2004-12-14 2009-06-30 Snap-On Incorporated Dynamic information method and system
AT522603B1 (de) * 2019-05-16 2022-03-15 Engel Austria Gmbh Computerprogrammprodukt

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5566092A (en) * 1993-12-30 1996-10-15 Caterpillar Inc. Machine fault diagnostics system and method
DE19505692A1 (de) * 1995-02-20 1996-08-22 Roland Man Druckmasch Druckmaschine
DE19636987C2 (de) * 1996-09-12 2000-03-23 Koenig & Bauer Ag Vorrichtung zur Diagnose bei einer Rotationsdruckmaschine
ATE216953T1 (de) * 1998-07-18 2002-05-15 Roland Man Druckmasch Wartungs- und inspektionssystem für eine druckmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004070490A2 *

Also Published As

Publication number Publication date
WO2004070490A2 (fr) 2004-08-19
WO2004070490A3 (fr) 2004-09-30

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