US20020084293A1 - System for feeding portions of material to an injection molding machine - Google Patents

System for feeding portions of material to an injection molding machine Download PDF

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Publication number
US20020084293A1
US20020084293A1 US09/751,560 US75156001A US2002084293A1 US 20020084293 A1 US20020084293 A1 US 20020084293A1 US 75156001 A US75156001 A US 75156001A US 2002084293 A1 US2002084293 A1 US 2002084293A1
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US
United States
Prior art keywords
weight
portions
material hopper
hopper
outlet
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.)
Abandoned
Application number
US09/751,560
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English (en)
Inventor
Eli Margalit
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.)
LIAD Weighing And Control Systems Ltd
Original Assignee
LIAD Weighing And Control Systems Ltd
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 LIAD Weighing And Control Systems Ltd filed Critical LIAD Weighing And Control Systems Ltd
Priority to US09/751,560 priority Critical patent/US20020084293A1/en
Assigned to LIAD WEIGHING AND CONTROL SYSTEMS LTD. reassignment LIAD WEIGHING AND CONTROL SYSTEMS LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MARGALIT, ELI
Priority to DE60110927T priority patent/DE60110927T2/de
Priority to PCT/IL2001/001209 priority patent/WO2002053348A1/en
Priority to EP01272788A priority patent/EP1347870B1/de
Priority to ES01272788T priority patent/ES2240346T3/es
Priority to CA2431479A priority patent/CA2431479C/en
Priority to JP2002554482A priority patent/JP4109991B2/ja
Priority to IL15457701A priority patent/IL154577A/en
Priority to AU2002217403A priority patent/AU2002217403B2/en
Priority to AT01272788T priority patent/ATE295773T1/de
Publication of US20020084293A1 publication Critical patent/US20020084293A1/en
Priority to US10/386,472 priority patent/US6688493B2/en
Priority to US10/700,477 priority patent/US6966456B2/en
Abandoned legal-status Critical Current

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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/22—Component parts, details or accessories; Auxiliary operations
    • B29B7/24—Component parts, details or accessories; Auxiliary operations for feeding
    • B29B7/242—Component parts, details or accessories; Auxiliary operations for feeding in measured doses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B29B7/60—Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B29B7/72—Measuring, controlling or regulating
    • B29B7/728—Measuring data of the driving system, e.g. torque, speed, power, vibration
    • 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
    • B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
    • B29C31/02—Dispensing from vessels, e.g. hoppers
    • 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
    • B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • G01G11/08—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers having means for controlling the rate of feed or discharge
    • G01G11/086—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers having means for controlling the rate of feed or discharge of the loss-in-weight feeding type
    • 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
    • B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
    • B29C2045/1891—Means for detecting presence or level of raw material inside feeding ducts, e.g. level sensors inside hoppers
    • 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
    • B29C2945/76003—Measured parameter
    • B29C2945/761—Dimensions, e.g. thickness
    • B29C2945/76107—Dimensions, e.g. thickness volume
    • 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
    • B29C2945/76167—Presence, absence of objects
    • 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
    • B29C2945/76183—Injection unit hopper
    • 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
    • B29C2945/76287—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
    • 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
    • B29C2945/76494—Controlled parameter
    • B29C2945/76551—Time
    • 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
    • B29C2945/76494—Controlled parameter
    • B29C2945/76595—Velocity
    • B29C2945/76605—Velocity rotational movement
    • 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
    • B29C2945/76655—Location of control
    • B29C2945/76658—Injection unit
    • B29C2945/76662—Injection unit hopper
    • 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
    • B29C2945/76655—Location of control
    • B29C2945/76658—Injection unit
    • B29C2945/76665—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
    • B29C2945/76655—Location of control
    • B29C2945/76765—Moulding material

Definitions

  • the present invention relates to a field of a molding machine and, in particular, concerned to a system for feeding portions of material to a plastic-injection molding machine.
  • volume feeding methods which use to achieve weight feeding, have some disadvantages.
  • the specific gravity of a material can be changed e.g., in a new production batch, and therefore a new scaling is needed.
  • the volume-weight scaling is a long process and requires skilled workers.
  • the volume-feeding method assumes that the feeding means dispenses equal portions permanently and therefore ignores the material streaming problems.
  • Feeding hopper usually has an outlet to feed the material. Part of the material, the material in the shaft that is perpendicular to the outlet, does not press on the hopper. This “outlet-shaft” causes an error in the hopper weighing since the material in the outlet-shaft or at least part of this material is not weighed. Load cells are calibrated when weighing such hoppers.
  • the present invention is a system for feeding portions of material to an injection-molding machine with the ability to accurately weigh feeding of small quantities of material.
  • a system for feeding portions of material to an injection molding-machine including (a) a feeding means; (b) a container, with a fill opening and an outlet, and the container is installed with the feeding means; (c) a material hopper, with a fill opening and an outlet, and the material hopper is located inside the container; (d) a load cell that is coupled to the material hopper, and (e) a controller operative for: (i) calculating the weight of fed material, using the load cell and loss-in-weight method, and (ii) controlling the feeding means.
  • the material hopper of the system has a funnel shaped lower part and an upper part and wherein the upper part has the same cross-section-area in each vertical level.
  • the upper part of the material hopper can have inclined parallel-walls.
  • the controller of the system is further operative for command the feeding means to dispense at least one portion of material from the material hopper, wherein each portion is dispensed in a given time and for a given interval of time in order to dispense portions with a predetermined weight.
  • the controller is further operative for it calculates the weight of the dispensed portion by (1) dispensing a number of portions; (2) calculating the weight of the number of portions, using loss-in-weight method, and (3) dividing the weight of the number of portions to the number of the portions.
  • the feeding means is a screw feeder and the controller is further operative for adjusting the weight of the further portion by increasing or decreasing the spin speed of the screw feeder, if the weight of the portion differs from the predetermined weight.
  • the outlet of the material hopper is shifted and elevated from the outlet of the container.
  • a material hopper for accurate weighing including (a) a funnel shaped lower part with outlet, and (b) a parallel or cylinder walls upper part wherein the walls can be inclined.
  • a method of accurate weighing of a fed portion including (a) storing the material in a material hopper that it's upper part is an inclined cylinder or an inclined parallel walls; (b) feeding a predetermined number of portions; (c) calculating the weight of the number of portions, using loss-in-weight of the material hopper using a load cell, and (d) calculating the weight of each portion of the number of portions by dividing the weight of the number of portions to the number of the number of portions.
  • the predetermined number of portions can be calculating by dividing the sensitivity of the load cell to the estimated weight of the fed portion.
  • the present invention successfully addresses the shortcomings of the existing technologies by providing a system for feeding portions of material to an injection-molding machine with the ability to accurately weigh feeding of small quantities of material.
  • FIG. 1 is an illustration of a schematic block diagram of the system.
  • FIG. 2 is an illustration of a systems' cross-section while material is in the material hopper and the system is in a work or ready to work position.
  • the present invention is a system for feeding portions of material to an injection-molding machine with the ability to accurately weigh feeding of small quantities of material.
  • weight-in-loss refers to a known method for weighing the material that has been dispensed or spent from a hopper, by weighing the hopper before taking from it having a pre-dispensing weight and secondly weighing the hopper after taking from it having an after-dispensing weight then obtaining a weight-loss of the hopper, which is the weight of the taken material, by subtracting the after-dispensing weight from the pre-dispensing-weight.
  • outlet-shaft refers to the part of the material in a hopper that is located in the shaft that perpendicularly to the outlet of the hopper and do not press on the hopper walls.
  • FIG. 1 illustrates a schematic block diagram of the system.
  • the system includes a container 10 , a material hopper 11 located inside the container 10 , a load cell 16 coupled to the material hopper 11 , a controller 13 that calculates weight according to the load cell 16 information and commands the motor 14 of the screw feeder 12 to dispense portions of material into the molding-machine 15 .
  • the upper part of the hopper 11 has inclined walls. This shape enables to keep the material in the outlet-shaft, constant by keeping minimal level of material in the hopper. Moreover, the walls of the upper part of the hopper 11 are parallel, for this reason the shape of each new space in the hopper 11 that is created by each dispensed portion. Therefore the profile of the material-pressure, in the hopper 11 , remains constant. The inclined and parallel walls of the hopper 11 minimize the weight errors and facilitate the weight calibration.
  • the material must be fed to the molding machine in accurate-weight portions and each portion must be fed in a given time and in a given duration.
  • the controller 13 commands the motor 14 of the screw feeder 12 to start rotating in a specific spin in the given time for a given duration. Since the given time and duration of feeding are given by the molding machine 15 , the screw feeder 12 spin is the only variable that can be used to control the weight of the fed portion.
  • the controller 13 gets a first weight of the hopper 11 from the load cell 16 and commands the motor 14 to rotate the screw feeder 12 for the given duration and a given spin that is predetermined by the system operator. After dispensing a predetermined number of portions the controller 13 gets a second weight of the hopper 11 .
  • the controller 13 obtains the total weight of the fed portions using the first weight of the hopper 11 , the second weight of the hopper 11 and loss-in-weight method.
  • the controller 13 obtains the portion weight by dividing the total weight to the number of fed portions. If the portion weight differs from a predetermined weight, the controller 13 adjusts the portion weight by increasing or decreasing the spin of the motor 14 of the screw feeder 12 , in the next set of portions. This process can be done sequentially or in a predetermined time.
  • FIG. 2 illustrates the systems' cross-section while material is in the material hopper and the system is in a work or ready to work position.
  • the material 17 fills the material hopper 11 .
  • the material 17 is fed through an outlet 18 of the material hopper 11 to a space 19 created between the material hoppers' outlet 23 and an outlet 20 of the container 10 , from this space 19 the material 17 is fed through the containers' outlet 20 to the screw feeder 12 .
  • the material hoppers' outlet 18 is shifted from the containers' outlet 20 to enable keeping the outlet-shaft 21 constant as long as the material level 22 is higher than the upper end of the outlet-shaft 21 and isolates the material hopper 11 from noise and shaking which is coming from the screw feeder 12 and its' motor 14 .
  • the controller 13 commands a refill means 23 to refill the material hopper 11 when the material level 22 reduced to a threshold level.
  • Part of the material 17 is located in the space 19 and acts as a buffer. This buffer isolates the material hopper 11 and prevents noises and shakings of the screw feeder 12 and its' motor 14 , to enable an accurate weighing of the material hopper 11 by the load cell 16 .
US09/751,560 2001-01-02 2001-01-02 System for feeding portions of material to an injection molding machine Abandoned US20020084293A1 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
US09/751,560 US20020084293A1 (en) 2001-01-02 2001-01-02 System for feeding portions of material to an injection molding machine
AT01272788T ATE295773T1 (de) 2001-01-02 2001-12-27 System zur zuführung von materialteilen zu einer spritzgiessmaschine
JP2002554482A JP4109991B2 (ja) 2001-01-02 2001-12-27 小分けにした材料を射出成形機に供給するためのシステム
PCT/IL2001/001209 WO2002053348A1 (en) 2001-01-02 2001-12-27 A system for feeding portions of material to an injection molding machine
EP01272788A EP1347870B1 (de) 2001-01-02 2001-12-27 System zur zuführung von materialteilen zu einer spritzgiessmaschine
ES01272788T ES2240346T3 (es) 2001-01-02 2001-12-27 Sistema para el suministro de porciones de material a una maquina de moldeo por inyeccion.
CA2431479A CA2431479C (en) 2001-01-02 2001-12-27 A system for feeding portions of material to an injection molding machine
DE60110927T DE60110927T2 (de) 2001-01-02 2001-12-27 System zur zuführung von materialteilen zu einer spritzgiessmaschine
IL15457701A IL154577A (en) 2001-01-02 2001-12-27 System for feeding material packets to an injection molding machine
AU2002217403A AU2002217403B2 (en) 2001-01-02 2001-12-27 A system for feeding portions of material to an injection molding machine
US10/386,472 US6688493B2 (en) 2001-01-02 2003-03-13 System for feeding portions of material to an injection molding machine
US10/700,477 US6966456B2 (en) 2001-01-02 2003-11-05 System for feeding portions of material to an injection molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/751,560 US20020084293A1 (en) 2001-01-02 2001-01-02 System for feeding portions of material to an injection molding machine

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/386,472 Continuation US6688493B2 (en) 2001-01-02 2003-03-13 System for feeding portions of material to an injection molding machine

Publications (1)

Publication Number Publication Date
US20020084293A1 true US20020084293A1 (en) 2002-07-04

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ID=25022549

Family Applications (3)

Application Number Title Priority Date Filing Date
US09/751,560 Abandoned US20020084293A1 (en) 2001-01-02 2001-01-02 System for feeding portions of material to an injection molding machine
US10/386,472 Expired - Lifetime US6688493B2 (en) 2001-01-02 2003-03-13 System for feeding portions of material to an injection molding machine
US10/700,477 Expired - Lifetime US6966456B2 (en) 2001-01-02 2003-11-05 System for feeding portions of material to an injection molding machine

Family Applications After (2)

Application Number Title Priority Date Filing Date
US10/386,472 Expired - Lifetime US6688493B2 (en) 2001-01-02 2003-03-13 System for feeding portions of material to an injection molding machine
US10/700,477 Expired - Lifetime US6966456B2 (en) 2001-01-02 2003-11-05 System for feeding portions of material to an injection molding machine

Country Status (10)

Country Link
US (3) US20020084293A1 (de)
EP (1) EP1347870B1 (de)
JP (1) JP4109991B2 (de)
AT (1) ATE295773T1 (de)
AU (1) AU2002217403B2 (de)
CA (1) CA2431479C (de)
DE (1) DE60110927T2 (de)
ES (1) ES2240346T3 (de)
IL (1) IL154577A (de)
WO (1) WO2002053348A1 (de)

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CN107059104A (zh) * 2016-02-10 2017-08-18 株式会社荏原制作所 用于向电镀槽供给电镀液的装置和方法、电镀系统、粉体容器以及电镀方法
CN114630742A (zh) * 2019-08-06 2022-06-14 安帕塞特公司 自清洁重量和体积定量给料设备

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US20020084293A1 (en) * 2001-01-02 2002-07-04 Liad Weighing And Control Systems Ltd. System for feeding portions of material to an injection molding machine
US6782928B2 (en) * 2002-03-15 2004-08-31 Lg.Philips Lcd Co., Ltd. Liquid crystal dispensing apparatus having confirming function for remaining amount of liquid crystal and method for measuring the same
DE10237989B4 (de) * 2002-08-20 2005-11-03 Kunststoff-Zentrum in Leipzig gemeinnützige Gesellschaft mbH Dosierverfahren für eine Spritzgießmaschine
US7035439B2 (en) * 2003-07-30 2006-04-25 Xerox Corporation System and method for measuring and quantizing document quality
DE102004020790A1 (de) * 2004-04-28 2005-11-24 Maschinenfabrik Gustav Eirich Gmbh & Co. Kg Verfahren und Vorrichtung zum kontinuierlichen geregelten Austrag von Feststoffen
US20060147278A1 (en) * 2004-11-01 2006-07-06 Doug Boring Tilted loader/receiver
WO2007141785A2 (en) * 2006-06-07 2007-12-13 Emerald Information Systems Ltd. Control system for production machines
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EP1347870B1 (de) 2005-05-18
ATE295773T1 (de) 2005-06-15
CA2431479C (en) 2010-03-30
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IL154577A0 (en) 2003-10-31
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DE60110927D1 (de) 2005-06-23
US20040099685A1 (en) 2004-05-27
CA2431479A1 (en) 2002-07-11
DE60110927T2 (de) 2006-01-19
US6966456B2 (en) 2005-11-22
WO2002053348A1 (en) 2002-07-11
US20030150873A1 (en) 2003-08-14
EP1347870A1 (de) 2003-10-01
ES2240346T3 (es) 2005-10-16

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