COMPUTER-BASED INTEGRATION OF ALL OPERATING PROCEDURES IN PRODUCTION MACHINES

• US 20070106420A1
• Filed: 12/22/2006
• Published: 05/10/2007
• Est. Priority Date: 08/31/2004
• Status: Abandoned Application

• Current Assignee: Krauss-Maffei Kunstofftechnik GmbH (KraussMaffei Group GmbH)
• Original Assignee: Krauss-Maffei Kunstofftechnik GmbH (KraussMaffei Group GmbH)
• Inventors: WYRWOLL, ARNO
• Application Number:
  US11/615,346
• Publication Number:
  US 20070106420A1
• Time in Patent Office: Days
• US Class Current: 700/200
• CPC Class Codes: B29C 2945/76026 Energy, power
• CPC Class Codes: B29C 2945/76066 Time
• CPC Class Codes: B29C 2945/76107 volume
• CPC Class Codes: B29C 2945/76163 Errors, malfunctioning
• CPC Class Codes: B29C 2945/76183 hopper
• CPC Class Codes: B29C 2945/76434 Parameter setting
• CPC Class Codes: B29C 2945/76551 Time
• CPC Class Codes: B29C 2945/76993 Remote, e.g. LAN, wireless LAN
• CPC Class Codes: B29C 2948/92866 Inlet shaft or slot, e.g. passive hopper; Injector, e.g. injector nozzle on barrel
• CPC Class Codes: B29C 2948/92895 Barrel or housing
• CPC Class Codes: B29C 2948/92904 Die; Nozzle zone
• CPC Class Codes: B29C 2948/92923 Calibration, after-treatment or cooling zone
• CPC Class Codes: B29C 45/76 Measuring, controlling or regulating measuring in general G01; controlling or regulating in general G05
• CPC Class Codes: B29C 48/12 Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
• CPC Class Codes: B29C 48/92 Measuring, controlling or regulating
• CPC Class Codes: G05B 2219/31407 Machining, work, process finish time estimation, calculation
• CPC Class Codes: G05B 2219/31408 Cost calculation of use of certain machine types
• CPC Class Codes: G05B 2219/34038 Web, http, ftp, internet, intranet server
• CPC Class Codes: G05B 2219/45244 Injection molding

Abstract

Apparatus for processing plastics, particularly an extrusion machine or injection molding machine, includes a material supply device, a plasticizing device and a molding device which are controlled by a control device to allow plastic products to be produced in a fully automated manner while taking into account essential operational processes. The apparatus includes first recording means which record the raw material supply and/or changes in the raw material supply, second recording means which records process parameters and/or material parameters, and a control device with evaluation means which determine from the data of the first and second recording means the expected raw material consumption, the expected production time, and/or the expected production cost for a given quantity of the product. Several apparatuses of this type can be combined in a single machine unit and controlled by the control device of one apparatus operating as a master.

Claims

1. An apparatus for processing a plastic material, in particular an extrusion or injection molding machine, comprising:

at least one material supply device for supplying the plastic material to be processed as a raw material;

at least one plasticizing unit for at least one of plasticizing or homogenizing the supplied plastic material through application of at least one of mechanical and thermal energy;

at least one molding device for subjecting the plasticized or homogenized material to a forming process for forming a product, wherein the product is removed, in particular demolded, from the molding device after a predetermined cooling or hardening time or supplied to an additional machining step, or both;

at least one microprocessor-controlled control device which controls at least one of the material supply device, the plasticizing unit and the molding device;

first recording means disposed on the material supply device and connected with the control device via a connection for transmission of data, said first recording means recording and transmitting to the control device at least one of a raw material supply and a change in the raw material supply, and

second recording means disposed on the molding device or on the plasticizing unit and connected with the control device via a connection for transmission of data, said second recording means recording and transmitting to the control device at least one of process and material parameters of the plasticized or homogenized material,

wherein the control device includes evaluation means receiving data from at least one of the first and second recording means and determining from the received data essentially in real time at least one of an expected raw material requirement, an expected production time, and an expected production cost for a predetermined quantity of the product.

2. The apparatus of claim 1, wherein the evaluation means determines from the data received from the second recording means essentially in real time at least one of an error probability, an error frequency and a quality value of the product.

3. The apparatus of claim 2, wherein the control device includes adaptation means which automatically adapt control parameters controlling the material supply device, the plasticizing unit or the molding device based on the error probability, the error frequency or the quality value, in order to enhance the quality value of the product or to reduce the error frequency or error probability, or both.

4. The apparatus of claim 1, further comprising third recording means operatively connected to the control device for recording machine parameters selected from the group consisting of machine downtimes, set-up times, maintenance times, tool wear, tool service life, machine errors, tool errors, energy consumption, and coolant consumption.

5. The apparatus of claim 1, wherein the control device is connected with a data network, in particular with an intranet or with the Internet, said control device providing in the data network data services being selected from the group consisting of web services, XML server services, FTP server services, SQL server services, e-mail services, application server services, J2EE services, file server services, WebDAV server services, SMB server services, NFS server services, AFP server services

6. The apparatus of claim 5, wherein the control device operates as a terminal (client) for the data services.

7. The apparatus of claim 4, wherein the control device is connected with a data network, in particular with an intranet or with the Internet, said control device providing in the data network data services with information recorded or determined, or both, by at least one of the first, second and third recording means and the control device, said information including at least one of the expected raw material requirement, the expected production time and the expected production cost for the predetermined quantity of the product, or other information derivable therefrom about the product.

8. The apparatus of claim 1, wherein the control device comprises first means which automatically initiate at least one of packaging, shipping and preparation of invoice documents, after a predetermined quantity of the product has been completed or for a future date when a predetermined quantity of the product is expected to be completed.

9. The apparatus of claim 1, wherein the control device comprises second means which automatically initiate at least one of retooling and maintenance based on predetermined production quantities, machine operating times, or machine downtimes or based on information recorded or determined by the control device, or a combination thereof.

10. The apparatus of claim 1, wherein the control comprises third means which automatically initiate based on the information recorded or determined by the control device ordering and delivery of raw material, in particular by taking into consideration delivery times or delivery dates.

11. The apparatus of claim 10, wherein the control device comprises fourth means which determine from at least one raw material supplier raw material data selected from the group consisting of raw material specifications, raw material availability, and raw material price, and automatically select a single raw material supplier from the at least one raw material supplier.

12. The apparatus of claim 5, further comprising a terminal (client) connected to the data network and configured to access the data services of the control device via the data network for changing at least one of a parameter of a product manufacturing process, the predetermined quantity of a product, a raw material specification for a product, a minimum quality value of a product, a priority value, a target delivery date for a product, a tool maintenance interval, and a machine maintenance interval.

13. The apparatus of claim 1, wherein the control device is connected with at least one device for inputting or reading personal data to be usable for registering or authenticating personnel, in particular personnel involved in set-up or maintenance.

14. The apparatus of claim 13, wherein the input or reading device is selected from the group consisting of magnetic card reading device, chip card reading device, biometric data reading device, fingerprint reading device, handprint reading device and face recognition device.

15. The apparatus of claim 4, wherein for determining the expected production cost, the evaluation means of the control device take into account at least one of the error probability, the error frequency, the quality value, the machine downtimes, the set-up times, the maintenance times, the tool wear, the tool service life, the machine, the tool errors, the energy consumption, the coolant consumption, raw material consumption, a raw material price, the priority value or a target delivery time, and expenses for personnel.

16. The apparatus of claim 4, further comprising a storage device connected with the control device, wherein the control device or the storage device include memory means that store the data transmitted by at least one of the first, second and the third recording means or the information determined by the control device, said memory means being selected from the group consisting of hard disk memory, magnetic tape memory, flash memory, EEPROM memory (Electrically Erasable Programmable Read-Only Memory), and RAM (Random Access Memory).

17. The apparatus of claim 8, wherein the first means automatically initiate packaging, shipping or preparation of invoice documents via a data network.

18. The apparatus of claim 9, wherein the second means automatically initiate retooling or maintenance via a data network.

19. The apparatus of claim 10, wherein the third means automatically initiate ordering and delivery of raw material via a data network.

20. The apparatus of claim 11, wherein the fourth means automatically determine the raw material data via a data network.

21. A machine unit with at least two apparatuses for processing plastic materials, in particular extrusion or injection molding machines, each apparatus comprising:

at least one material supply device for supplying the plastic material to be processed as a raw material;

at least one plasticizing unit for at least one of plasticizing or homogenizing the supplied plastic material through application of at least one of mechanical and thermal energy;

at least one molding device for subjecting the plasticized or homogenized material to a forming process for forming a product, wherein the product is removed, in particular demolded, from the molding device after a predetermined cooling or hardening time or supplied to an additional machining step, or both;

at least one microprocessor-controlled control device which controls at least one of the material supply device, the plasticizing unit and the molding device;

first recording means disposed on the material supply device and connected with the control device for transmission of data, said first recording means recording and transmitting to the control device at least one of a raw material supply and a change in the raw material supply, and

second recording means disposed on the molding device or on the plasticizing unit and connected with the control device for transmission of data, said second recording means recording and transmitting to the control device at least one of process and material parameters of the plasticized or homogenized material,

wherein the control device includes evaluation means receiving data from at least one of the first and second recording means and determining from the received data essentially in real time at least one of an expected raw material requirement, an expected production time, and an expected production cost for a predetermined quantity of the product,

wherein the control devices of the at least two apparatuses are connected with each other via a data network, in particular via an intranet or via the Internet, with the control device of a first of the at least two apparatuses operating as a central control device (master) for the connected control devices (slaves) of the other apparatuses,

wherein the information recorded by at least the first and second recording means of all of the at least two apparatuses and the information recorded or determined by the control devices of the connected control devices (slaves) are transmitted to the central control device (master), and

wherein the master combines the recorded or determined information, and determines therefrom essentially in real time the expected raw material requirement, the expected production time or the expected production cost for the predetermined quantity of the product for the machine unit.

22. The machine unit according to claim 21, wherein the central control device (master) includes adaptation means which control via the data network parameters selected from the group consisting of product manufacturing process parameters, a predetermined quantity of the product, a raw material requirement for the product, a minimum quality value of the product, a tool maintenance interval, and a machine maintenance interval of the slaves or of the at least two apparatuses operatively connected with the slaves.