WO2005002829A2 - Maschine, insbesondere spritzgiessmaschine, mit einem kraftsensor - Google Patents
Maschine, insbesondere spritzgiessmaschine, mit einem kraftsensor Download PDFInfo
- Publication number
- WO2005002829A2 WO2005002829A2 PCT/EP2004/007152 EP2004007152W WO2005002829A2 WO 2005002829 A2 WO2005002829 A2 WO 2005002829A2 EP 2004007152 W EP2004007152 W EP 2004007152W WO 2005002829 A2 WO2005002829 A2 WO 2005002829A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- screw
- machine according
- force sensor
- injection molding
- drive shaft
- Prior art date
Links
- 238000001746 injection moulding Methods 0.000 title claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 238000005259 measurement Methods 0.000 claims description 10
- 230000001939 inductive effect Effects 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 abstract description 13
- 239000007924 injection Substances 0.000 abstract description 13
- 238000000034 method Methods 0.000 description 8
- 238000004804 winding Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
-
- 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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
- B29C45/50—Axially movable screw
- B29C45/5008—Drive means therefor
- B29C2045/5032—Drive means therefor using means for detecting injection or back pressures
-
- 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
- B29C2945/76003—Measured parameter
- B29C2945/76006—Pressure
-
- 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
- B29C2945/76003—Measured parameter
- B29C2945/76013—Force
-
- 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
- B29C2945/76177—Location of measurement
- B29C2945/7618—Injection unit
- B29C2945/76187—Injection unit screw
-
- 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
- B29C2945/76177—Location of measurement
- B29C2945/7618—Injection unit
- B29C2945/7619—Injection unit barrel
- B29C2945/76193—Injection unit barrel barrel-chamber
- B29C2945/76197—Injection unit barrel barrel-chamber screw ante-chamber
-
- 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
- B29C2945/76451—Measurement means
- B29C2945/76454—Electrical, e.g. thermocouples
- B29C2945/76458—Electrical, e.g. thermocouples piezoelectric
-
- 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
- B29C2945/76451—Measurement means
- B29C2945/76461—Optical, e.g. laser
-
- 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
- B29C2945/76993—Remote, e.g. LAN, wireless LAN
-
- 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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
- B29C45/50—Axially movable screw
- B29C45/5008—Drive means therefor
Definitions
- Machine in particular injection molding machine, with a force sensor
- the invention relates to a machine with a rotary and linearly driven machine part and with a force sensor for measuring the force exerted on this machine part.
- the invention relates to an injection molding machine with a force sensor for determining the back pressure and / or injection pressure exerted on the screw of the injection molding machine.
- plastic material is melted by the screw during the plasticizing process and conveyed into the screw cavity.
- the screw is designed as a pusher screw with which the plastic melt is to be injected into the mold of the injection molding machine, the screw is first moved backwards during the plasticizing process and then moved forward for the injection.
- a so-called back pressure is exerted on the screw by the plastic melt located in the screw vestibule, which leads to a slight deformation of the components in the force flow in the force flow between the screw and the screw drive. From this deformation, the force exerted on the screw and, via the cross section of the screw, the dynamic pressure in the screw antechamber can be determined.
- the injection pressure prevailing in the screw antechamber during injection leads to a deformation of the components in the power flow, so that by measuring the deformation, the force exerted on the screw during injection and the injection pressure across the cross section of the screw can be determined.
- the force flow has the highest density in this machine part, so that a force measurement on or in this machine part can be regarded as advantageous.
- the object of the invention is to specify a machine in which the force is exerted on a rotary and linear-driven machine part high precision can be measured.
- the invention is based on the object of specifying an injection molding machine in which the back pressure and / or injection pressure (generally the pressure in the screw antechamber) can be determined both with high precision and in a comparatively simple manner.
- the force sensor is arranged between the rear end of the screw and the rotary drive shaft of the screw makes it easy to install and - unlike force sensors inside the screw - easily accessible.
- a measurement amplifier that rotates with the screw or the drive shaft and a measurement transmitter that rotates with the screw or the drive shaft are also provided.
- the measured value receiver can be provided on a housing part in a rotationally fixed, in particular stationary.
- slip ring or inductive transmitters can be provided to transmit the measured values from the rotating transmitter to the stationary receiver.
- Both slip ring and inductive transformers are designed for rotational movements.
- contactless transmission methods such as infrared or radio transmission method.
- Typical radio transmission frequencies are 433 MHz, 868 MHz and more recently in the 2.4 GHz band (Bluetooth).
- slip ring and / or inductive transmitters can be provided for the energy supply of the rotating parts such as force sensor, measuring value amplifier and measuring value transmitter, provided that no axial movements of these parts are to take place.
- energy can be used co-rotating solar cells are provided, which are irradiated by stationary light sources. If necessary, rotating batteries can also be provided.
- the force sensor is arranged on the coupling between the rear end of the worm and the drive shaft and that a disc is attached to this coupling, on which the other rotating parts such as measuring value amplifiers, transmitters and solar cells are attached.
- the receiver for the measured values and the light sources for the solar cells can be accommodated in suitable locations in the housing.
- a measuring chain can therefore be set up, in which both the measured value transmission and the energy supply take place without contact. This means that you are completely free to attach the receiver, i.e. it does not matter whether there is a rotational and / or translational relative movement between the receiver and the transmitter. Likewise, one is independent in the energy supply of such relative movements between the energy source and the consumer if the energy supply takes place with rotating solar cells which are irradiated by stationary light sources.
- 1 shows a plasticizing and injection unit of an injection molding machine with a direct drive of the screw; 2 basic circuit diagram for the force measurement according to the invention with radio transmission of the measured values; Fig. 3 detail of the measuring device with slip ring transmitter and battery; Fig. 4 Detail of the measuring device with inductive transmission for the measured values and slip ring transmitters for energy supply.
- FIG. 1 shows the rear sections of the screw cylinder 1 and the screw 2 mounted therein of an injection molding machine that is otherwise not shown in detail.
- the worm cylinder 1 is arranged in a housing 3 to which a first 4 and a second hollow shaft motor 5 are fastened.
- the worm 2 is via a clutch 20 fastened with its journal 40 in a movement spindle 6 as the drive shaft of the worm, the movement spindle 6 being guided in a spindle nut 7. It is a ball screw drive.
- the spindle nut 7 is the hollow shaft of the first hollow shaft motor 4, which is supported directly in the motor housing by means of an axial bearing 8.
- a drive pin 11 projects, which is also provided with axial grooves 12 and is thus coupled to the movement spindle 6 in a rotationally fixed but axially displaceable manner.
- the drive pin 11 is fixedly connected to the hollow shaft 13 of the second hollow shaft motor 5, which surrounds the drive pin 11 leaving an annular space 14 free.
- the hollow shaft 13 is supported directly in the motor housing by means of an axial bearing 15.
- the hollow shaft motors 4 and 5 are transverse flux motors with cylindrical magnets 16 and 17, which are surrounded on both sides by windings 18 and 19.
- the worm 2 basically performs two movements.
- injecting the screw is pushed axially forward and does not rotate.
- plasticizing the screw 2 rotates and is pushed axially backwards by the plasticized material that is conveyed into the screw antechamber (not shown here).
- a defined counterforce dynamic pressure
- the hollow shaft motors 4 and 5 are operated as follows:
- the first hollow shaft motor 4 rotates the spindle nut 7 and the worm 2 is moved axially (to the left in FIG. 1).
- the second hollow shaft motor 5 remains stationary.
- the second hollow shaft motor 5 rotates the screw 2 over the drive pin 11 at the required plasticizing speed.
- the first hollow shaft motor 4 rotates at approximately the same speed as the second hollow shaft motor 5. The return speed of the screw 2 results from the speed difference.
- the device for force measurement according to the invention is accommodated in the free space 21.
- a force sensor 22 is arranged between the clutch 20 and the drive shaft 6, for example a force sensor with strain gauges or a piezoelectric force sensor.
- a disk 23 mounted on the clutch 20 serves for mounting a measured value amplifier 24 and a transmitter 25 (measured value transmitter) for transmitting the measured values of the force sensor 22.
- 23 solar cells 26 are mounted on the pane, which are irradiated by stationary light sources 27 and for supplying power to the force sensor 22, amplifier 24 and transmitter 25 serve.
- a receiver unit 28 (measured value receiver), consisting of the actual receiver 29 and a controller 30, which are connected to one another via lines of the type RS232, RS485 or similar type; A D / A converter 31 can optionally be provided (see FIG. 2).
- On the worm clutch 20 are thus rotatably and slidably attached: force sensor 22, amplifier and A / D converter 24, transmitter 25 and the solar cells 26.
- receiver 29 with controller 30 and the light sources 27 are fixed in place in the housing 3: receiver 29 with controller 30 and the light sources 27.
- the stationary parts in the receiver unit 28 can be supplied in a wire-bound manner in a conventional manner.
- the electrical lines between the individual rotating components of the measuring device are not shown for the sake of clarity; rather, the wiring of these components is within the scope of expert knowledge.
- the dynamic pressure and the injection pressure are measured as described below. Since the force sensor 22 is in the flow of force between the worm 2 and the drive shaft 6, for example in the case of a force sensor 22 equipped with strain gauges, an expansion will take place due to the dynamic pressure or the injection pressure.
- This measurement signal is converted by the amplifier and A / D converter 24 into an electrical signal, passed on to the transmitter 25 via a line of the RS232 type and transmitted by radio to the fixed receiver 29. From there, the signal is forwarded to the controller 30 and evaluated, for example fed to the machine controller, in order to process it there (with, for example, data processing programs for controlling the plasticizing and injection process).
- Typical frequencies such as 433 MHz, 868 MHz or the BlueTooth standard in the 2.4 GHz band can be used for radio transmission.
- the data transmission between transmitter 25 and receiver 29 can also be bidirectional, so that signals from the receiver unit 28, for example
- the zero point setting of the force sensor 22 can be transmitted to the transmitter 25 and can be passed on from there to the force sensor 22.
- the measured value is transmitted between the measured value transmitter 25 and the measured value receiver 28 by means of a slip ring transmitter 41, and a battery 43 is provided for supplying energy to the electronic components.
- a further force sensor 22 is additionally mounted on the journal 40. If necessary, the force sensor 22 between the journal 40 and the drive shaft 6 can then be dispensed with.
- the measured value is transmitted between the measured value transmitter 25 and the measured value receiver 28 by means of an inductive transmitter 42.
- the rotating electronic components are supplied with power from a fixed voltage source 44 via a slip ring transmitter 41.
- the invention has been described in the context of an injection molding machine.
- the idea of force measurement on a rotary and linearly driven machine part by means of a rotating force sensor, a possibly also rotating measuring amplifier, as well as a rotating measuring transmitter or general measuring transmitter and a stationary measuring receiver can also be used in other technical areas where the force to be measured on a rotary and linear driven machine part.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10330193.3 | 2003-07-03 | ||
DE2003130193 DE10330193B3 (de) | 2003-07-03 | 2003-07-03 | Spritzgießmaschine mit Kraftsensor |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005002829A2 true WO2005002829A2 (de) | 2005-01-13 |
WO2005002829A3 WO2005002829A3 (de) | 2005-08-11 |
Family
ID=33559869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/007152 WO2005002829A2 (de) | 2003-07-03 | 2004-07-01 | Maschine, insbesondere spritzgiessmaschine, mit einem kraftsensor |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE10330193B3 (de) |
WO (1) | WO2005002829A2 (de) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004054581A1 (de) * | 2004-11-11 | 2006-06-01 | Siemens Ag | Messsystem mit rotierender Erfassungseinrichtung insbesondere für einen Motor oder einen Generator |
WO2008074172A1 (de) * | 2006-12-20 | 2008-06-26 | Kistler Holding Ag | Kupplung für eine kunststoffspritzgiessanlage |
CN102141454A (zh) * | 2010-12-29 | 2011-08-03 | 蚌埠日月仪器研究所有限公司 | 螺杆泵抽油机井扭矩、载荷、转速的检测传输方法及装置 |
AT12211U1 (de) * | 2010-07-19 | 2012-01-15 | Engel Austria Gmbh | Plastifizierschnecke mit messsensor und übermittlungseinrichtung |
US8263580B2 (en) | 1998-09-11 | 2012-09-11 | Stiefel Research Australia Pty Ltd | Vitamin formulation |
CN105823512A (zh) * | 2016-03-31 | 2016-08-03 | 西安思坦仪器股份有限公司 | 一种螺杆泵工况的检测装置 |
CN113459385A (zh) * | 2020-03-31 | 2021-10-01 | 住友重机械工业株式会社 | 注射成型机 |
CN113459390A (zh) * | 2020-03-31 | 2021-10-01 | 住友重机械工业株式会社 | 注射成型机 |
WO2022210789A1 (ja) * | 2021-03-30 | 2022-10-06 | 住友重機械工業株式会社 | 射出装置 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005053377B4 (de) * | 2005-11-07 | 2008-10-30 | Sms Extrusion Kempen Gmbh | Vorrichtung zum Durchtrennen von Rohren und Verfahren zum Betreiben solch einer Vorrichtung |
DE102008014782A1 (de) * | 2008-03-18 | 2009-10-08 | Sumitomo (Shi) Demag Plastics Machinery Gmbh | Kunststoff-Spritzgießmaschine mit Spritzkraftmesseinrichtung |
DE102022103074A1 (de) | 2022-02-09 | 2023-08-10 | Arburg Gmbh + Co Kg | Spritzgießeinheit |
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US3336795A (en) * | 1964-12-18 | 1967-08-22 | Shinko Tsushin Kogyo Kabushiki | Semiconductor force measuring device |
US3619612A (en) * | 1969-11-19 | 1971-11-09 | Caterpillar Tractor Co | Monitoring device for rotating systems |
DE2745770A1 (de) * | 1977-10-12 | 1979-04-26 | Bbc Brown Boveri & Cie | Verfahren zum beruehrungslosen uebertragen von signalen |
GB1585175A (en) * | 1977-07-13 | 1981-02-25 | Talbot Motor | Measurement apparatus for use with a rotary member |
US4354190A (en) * | 1980-04-04 | 1982-10-12 | General Electric Company | Rotor measurement system using reflected load transmission |
EP0291344A2 (de) * | 1987-05-13 | 1988-11-17 | Bently Nevada Corporation | Drahtloses Datenkopplungssystem |
EP0444337A1 (de) * | 1988-10-03 | 1991-09-04 | Lucas Aerospace Power Transmission Corporation | Vorrichtung und Verfahren zur Übertragung von Daten von einem rotierenden zu einem feststehenden Teil |
DE19621794A1 (de) * | 1995-05-31 | 1996-12-05 | Fuji Electric Co Ltd | Bidirektionale, optisch gespeiste Signalübertragungsvorrichtung |
JP2000351139A (ja) * | 1999-06-14 | 2000-12-19 | Sumitomo Heavy Ind Ltd | 射出成形機の背圧検出方法及びその装置 |
EP1162053A2 (de) * | 2000-06-07 | 2001-12-12 | Krauss-Maffei Kunststofftechnik GmbH | Einspritzaggregat für eine Spritzgiessmaschine |
JP2002067118A (ja) * | 2000-09-04 | 2002-03-05 | Toyo Mach & Metal Co Ltd | 成形機の圧力検出装置 |
DE10114006A1 (de) * | 2001-03-22 | 2002-10-10 | Siemens Ag | Messvorrichtung |
DE10139524A1 (de) * | 2001-08-10 | 2003-02-20 | Sms Demag Ag | Vorrichtung zur Messung von Belastungen an rotierenden Bauteilen |
JP2003168184A (ja) * | 2001-11-30 | 2003-06-13 | Resuka:Kk | ワイヤレスセンサ |
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DE19909307A1 (de) * | 1998-03-19 | 1999-09-23 | Siemens Ag | Produktionsmaschine mit elektrischen Antrieben für den Einsatz in der Kunststoffindustrie |
JP2001277319A (ja) * | 2000-04-03 | 2001-10-09 | Fanuc Ltd | 成形特性判別方法及び射出成形機 |
JP3404652B2 (ja) * | 2000-04-04 | 2003-05-12 | 住友重機械工業株式会社 | 射出成形機の充填工程制御方法及び制御装置 |
DE10210923B4 (de) * | 2002-03-13 | 2004-08-12 | Demag Ergotech Gmbh | Druckmesseinrichtung für eine Spritzgießmaschine |
AU2003232564A1 (en) * | 2002-06-14 | 2003-12-31 | Netstal-Maschinen Ag | Method for injection-molding weight-accurate parts and corresponding injection molding machine |
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2003
- 2003-07-03 DE DE2003130193 patent/DE10330193B3/de not_active Expired - Fee Related
-
2004
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US3619612A (en) * | 1969-11-19 | 1971-11-09 | Caterpillar Tractor Co | Monitoring device for rotating systems |
GB1585175A (en) * | 1977-07-13 | 1981-02-25 | Talbot Motor | Measurement apparatus for use with a rotary member |
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EP0291344A2 (de) * | 1987-05-13 | 1988-11-17 | Bently Nevada Corporation | Drahtloses Datenkopplungssystem |
EP0444337A1 (de) * | 1988-10-03 | 1991-09-04 | Lucas Aerospace Power Transmission Corporation | Vorrichtung und Verfahren zur Übertragung von Daten von einem rotierenden zu einem feststehenden Teil |
DE19621794A1 (de) * | 1995-05-31 | 1996-12-05 | Fuji Electric Co Ltd | Bidirektionale, optisch gespeiste Signalübertragungsvorrichtung |
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