WO2013142987A1 - Calculateur de système de moulage conçu pour déterminer si des informations indiquant une performance de fonctionnement de l'ensemble du système de moulage sont acceptables ou non - Google Patents

Calculateur de système de moulage conçu pour déterminer si des informations indiquant une performance de fonctionnement de l'ensemble du système de moulage sont acceptables ou non Download PDF

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Publication number
WO2013142987A1
WO2013142987A1 PCT/CA2013/050166 CA2013050166W WO2013142987A1 WO 2013142987 A1 WO2013142987 A1 WO 2013142987A1 CA 2013050166 W CA2013050166 W CA 2013050166W WO 2013142987 A1 WO2013142987 A1 WO 2013142987A1
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WO
WIPO (PCT)
Prior art keywords
assembly
molding
output
system computer
interface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CA2013/050166
Other languages
English (en)
Inventor
Joaquim Martins Nogueira
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.)
Husky Injection Molding Systems Ltd
Husky Injection Molding Systems SA
Original Assignee
Husky Injection Molding Systems Ltd
Husky Injection Molding Systems SA
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 Husky Injection Molding Systems Ltd, Husky Injection Molding Systems SA filed Critical Husky Injection Molding Systems Ltd
Publication of WO2013142987A1 publication Critical patent/WO2013142987A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B29C45/768—Detecting defective moulding conditions
    • 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
    • B29C2945/76003—Measured parameter
    • B29C2945/7602—Torque
    • 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
    • B29C2945/76083—Position
    • 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
    • B29C2945/76163—Errors, malfunctioning
    • 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
    • B29C2945/76344—Phase or stage of measurement
    • B29C2945/76381—Injection
    • 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
    • B29C2945/76939—Using stored or historical data sets
    • B29C2945/76943—Using stored or historical data sets compare with thresholds

Definitions

  • United States Patent Number 5147659 discloses a nozzle touch apparatus for use in an injection molding machine.
  • United States Patent Number 5980793 discloses a first static sensor for determining forces arising during material preparation stage, for determination of the forces arising at a feeding means in an injection molding machine for plastic materials.
  • United States Patent Number 5997778 discloses an injection molding machine that uses a summed, multi-term control law to control ram velocity during the injection stroke of a molding cycle to emulate a user set velocity profile.
  • An automatic calibration method sets no load ram speeds to duplicate user set ram speeds.
  • United States Patent Number 6289259 discloses an apparatus and method for controlling a hydraulic actuator in an injection molding machine, where the hydraulic actuator moves in a linear or rotary manner to effect movement of an injection molding device, such as a mold clamp.
  • United States Patent Number 6695994 (BULGRIN et al.) discloses an electric injection molding machine in which a melt pressure value is provided without pressure sensing through solving one or more state equations using measured motor performance parameters such as position or velocity, and torque or current.
  • United States Patent Number 7806675 discloses suck back is started and a gradient of pressure is detected. Whether or not an absolute value of the detected gradient of the pressure is smaller than a reference value set in advance is determined, and it is determined that the reduction of the resin pressure has been completed when the absolute value becomes smaller than the reference value. A screw position at the time of the completion of the pressure reduction is stored and a screw movement amount from a suck back start position to a pressure-reduction completion position is displayed on a screen.
  • United States Patent Number 7904196 (OKAZAKI) disclosed is a rotational angle of a motor operative to propel forward a screw in an injection molding machine is detected at an encoder.
  • United States Patent Publication Number 2008/0029916 discloses a system for controlling operation of a mechanical press.
  • United States Patent Publication Number 2012/0007265 discloses a feedback method that includes sending a signal from a sensor associated with a plastics melting machine to a controller, sending a signal from the controller to the pump, monitoring the pressure in the pump and sensing the position of an injection nozzle valve, and sending a signal to the injection nozzle valve instructing the valve to open or close.
  • the inventor has researched a problem associated with known molding systems that inadvertently manufacture bad-quality molded articles or parts. After much study, the inventor believes he has arrived at an understanding of the problem and its solution, which are stated below.
  • calibrate and/or verify sensors used on a molding system such as a pressure-sensor, a strain gauge, etc.
  • the meaning of calibrate is to correlate a reading of an instrument or a sensor with the reading of a standard device in order to check the accuracy of the instrument or the sensor.
  • a molding-system computer comprising: a computing assembly (110) being configured to determine whether information indicating an operational performance of an assembly (903) of a molding system (900) is acceptable.
  • FIG. 1 depicts a first example of a molding- system computer (100);
  • FIG. 2 depicts a first example of a molding system (900);
  • FIG. 3 depicts a second example of the molding-system computer (100) for use with the first example of the molding system (900) of FIG. 2;
  • FIG. 4 depicts the first example of the molding-system computer (100) of FIG. 1 for use with a second example of the molding system (900).
  • a molding-system computer including (and not limited to): a computing assembly (110) configured to determine whether information indicating the operational performance of an assembly (903) of a molding system (900) is acceptable.
  • the molding-system computer (100) includes (and is not limited to): (i) an input-interface assembly (102), and (ii) a computing assembly (110).
  • the input- interface assembly (102) is configured to receive information indicating operational performance of an assembly (903) of the molding system (900).
  • the computing assembly (110) is configured to determine whether the information indicating the operational performance of the assembly (903) received by the input-interface assembly (102) is within an acceptable level of tolerance.
  • the input-interface assembly (102) is configured to receive the information from a sensor assembly (996) configured to indicate the operational performance of the assembly (903) of the molding system (900).
  • the computing assembly (110) is configured to: (i) interface with the input-interface assembly (102), and (ii) analyze the information received by the input-interface assembly (102).
  • the computing assembly (110) is configured to determine an adjustment factor to be made to the operational performance of the assembly (903) based on the analysis of the information received by the input-interface assembly (102).
  • the molding- system computer (100) further includes (and is not limited to) an output-interface assembly (120).
  • the output-interface assembly (120) is configured to: (i) interface with the computing assembly (110), and (ii) control, based on the adjustment factor determined by the computing assembly (110), the assembly (903).
  • the assembly (903) may include a runner system (916).
  • the assembly (903) may include a runner-based actuator configured for use in a runner system (916).
  • a runner system (916) may also be called a melt-distribution assembly.
  • the runner system (916) is configured to connect an injection unit or plasticizing assembly (950) to a mold assembly (918).
  • the assembly (903) may include a valve-gate actuator configured for use in a runner system (916).
  • the assembly (903) may include a mold actuator configured to actuate functions associated with a mold assembly (918).
  • the assembly (903) may include a mold actuator configured to actuate functions associated with the mold assembly (918).
  • the assembly (903) may include a clamp assembly (904).
  • the assembly (903) may include a clamping assembly (912).
  • the assembly (903) may include a clamp actuator configured for use in a clamping assembly (912).
  • the all-electric molding system (901) includes and is not limited to: (i) a barrel assembly (952), (ii) a non-return valve (954), and (iii) a hopper assembly (956).
  • the assembly (903) includes (and is not limited to): a plasticizing assembly (950).
  • the plasticizing assembly (950) is configured to be received in the barrel assembly (952).
  • the plasticizing assembly (950) may also be called a screw assembly.
  • the hopper assembly (956) is configured to be connected to the barrel assembly (952).
  • the hopper assembly (956) is configured to receive a moldable material (resin) and to feed the resin to the interior of the barrel assembly (952).
  • the nonreturn valve (954) is connected to a tip of the plasticizing assembly (950) at an exit end of the barrel assembly (952).
  • the plasticizing assembly (950) converts the moldable material into a flowable resin.
  • the assembly (903) includes (and is not limited to): (i) a first servo-motor assembly (958), (ii) a second servo-motor assembly (960), (iii) a first interface assembly (962), and (iv) a second interface assembly (966).
  • the first interface assembly (962) is configured to operatively connect the plasticizing assembly (950) to the first servo-motor assembly (958).
  • the first interface assembly (962) and the first servo-motor assembly (958) are configured to translate the plasticizing assembly (950).
  • the second interface assembly (966) is configured to operatively connect the plasticizing assembly (950) to the second servo-motor assembly (960).
  • the second interface assembly (966) and the second servo-motor assembly (960) are configured to rotate the plasticizing assembly (950).
  • the first interface assembly (962) may include a ball-screw assembly (known).
  • the second interface assembly (966) may include a belt assembly (known).
  • the first servo-motor assembly (958) and the first interface assembly (962) are configured to translate, in operation, the plasticizing assembly (950) during an injection phase of the molding system (900).
  • flowable resin is ejected from the barrel assembly (952): (1) directly to a mold assembly (known and not depicted), or (ii) indirectly by way of a runner assembly (known and not depicted).
  • the second servo-motor assembly (960) and the second interface assembly (966) are configured to rotate the plasticizing assembly (950) during a recovery phase of the molding system (900). During the recovery phase of the molding system (900), the plasticizing assembly (950) generates additional flowable resin in the barrel assembly (952).
  • the sensor assembly (996) includes (and is not limited to): (i) a pressure sensor assembly (967), (ii) an encoder-output assembly (959), and (iii) a torque-output assembly (963).
  • the pressure sensor assembly (967) is positioned along a longitudinal axis of the plasticizing assembly (950), and is configured to provide a sensor-output signal indicating an amount of pressure applied to the plasticizing assembly (950).
  • the encoder-output assembly (959) is configured to provide a signal indicating the rotational position of the first servo-motor assembly (958), which is proportional to the longitudinal displacement or position of the plasticizing assembly (950).
  • the torque-output assembly (963) is configured to provide a signal indicating the amount of torque output of the first servo-motor assembly (958).
  • the first servo-motor assembly (958) may include the encoder-output assembly (959) and the torque-output assembly (963).
  • the encoder- output assembly (959) may be called a resolver.
  • the pressure sensor assembly (967) may include a load cell (digital or analog) or a strain gauge assembly (known and not depicted), or equivalent thereof, etc.
  • the molding-system computer (100) includes (and is not limited to): (i) a processor assembly (101), (ii) a memory unit (103), (iii) an input-interface assembly (102), and (iv) an output-interface assembly (120).
  • the processor assembly (101) is operatively connected to (and exchange signals with) the memory unit (103), the input-interface assembly (102) and to the output-interface assembly (120).
  • the memory unit (103) is configured to tangibly include controller-executable instructions configured to direct the processor assembly (101) to execute processing tasks (computations).
  • the controller-executable instructions are configured to: calibrate, in situ, an aspect (performance or function) of the assembly (903) of the molding system (900). Calibration includes verification of operation of the assembly (903) is within acceptable tolerance limits.
  • the input- interface assembly (102) includes (and is not limited to): (i) a first input port (102A), (ii) a second input port (102B), and (iii) a third input port (102C).
  • the first input port (102A) is configured to connect to the pressure sensor assembly (967).
  • the second input port (102B) is configured to connect to the encoder-output assembly (959).
  • the third input port (102C) is configured to connect to the torque-output assembly (963).
  • the output-interface assembly (120) includes (and is not limited to): (i) a first output port (120 A), (ii) a second output port (120B), and (iii) a third output port (120C).
  • the first output port (120A) is configured to provide the indication of the screw position of the screw of the plasticizing assembly (950).
  • the first output port (120A) may provide an analog signal to be measured by a measuring device.
  • the second output port (120B) is configured to provide an indication of the pressure sensor assembly (967).
  • the pressure sensor assembly (967) may be a pressure sensor or a load sensor.
  • the second output port (120B) may be an analog signal to be measured by a measuring device.
  • the third output port (120C) is configured to provide an indication (example: torque) of the torque-output assembly (963).
  • the third output port (120C) may be an analog signal to be measured by a measuring device.
  • the first output port (120 A) is configured to provide an output indicating position of the plasticizing assembly (950) in the barrel assembly (952).
  • the second output port (120B) is configured to provide an output indicating the amount of torque applied to the plasticizing assembly (950).
  • the third output port (120C) is configured to provide an output signal indicating the amount of force applied to the plasticizing assembly (950).
  • the molding-system computer (100) may be operatively connected to the first servo-motor assembly (958), and is configured to control operation of the first servo-motor assembly (958).
  • the molding-system computer (100) may be connected to the second servo-motor assembly (960), and is configured to control operation of the second servo-motor assembly (960). It will be appreciated that the molding-system computer (100) may operate under several modes of operation.
  • a first mode of operation includes stopping the manufacturing operation of the molding system (900), and put the molding system (900) through a test cycle.
  • a second mode of operation includes having the molding-system computer (100) operate while the molding system (900) manufactures molded articles during the various phases of the molding cycle of the molding system (900).
  • the first mode of operation includes (and is not limited to): operations S802, S804, S806, S808, S810, S812, S814, S816, S818, S820, and S822.
  • Operation S802 includes blocking exit from the barrel assembly (952).
  • the orifice (exit portal) of the nozzle assembly attached to the exit end of the barrel assembly (952) is blocked so that the melt in the barrel assembly (952) will dead head at the exit portion of the barrel assembly (952) for the case where the melt is pushed forward by the plasticizing assembly (950).
  • Operation S806 includes applying a pressure to the melt and holding the pressure that is applied. Hold for a defined time to stabilize the melt.
  • Operation S810 includes removing the pressured applied to the melt (also known as decompressing the melt).
  • Operation S814 includes purging the exit end of the barrel assembly (952); that is, removing the melt form the exit end of the barrel assembly (952).
  • Operation S808 (optional) includes providing output signals via first output port (120A), second output port (120B), and third output port (120C) and permitting an operator to use external measurement devices.
  • Operation S820 includes logging (recording) the output signals that were measured to a memory unit (103) of a computing assembly (110).
  • Operation S822 includes comparing the output signals over time.
  • Tl is a first time stamp.
  • Al is a first value of the first output port (120 A) measured at Tl.
  • B l is a first value of the second output port (120B) measured at Tl.
  • CI is a first value of the third output port (120C) measured at Tl.
  • T2 is a second time stamp (occurring after Tl).
  • Al is a second value of the first output port (120A) measured at T2.
  • B l is a second value of the second output port (120B) measured at T2.
  • CI is a second value of the third output port (120C) measured at T2.
  • T3 is a second time stamp (occurring after T2).
  • A3 is a second value of the first output port (120 A) measured at T3.
  • B3 is a second value of the second output port (120B) measured at T3.
  • C3 is a second value of the third output port (120C) measured at T3.
  • the above information represents an example of a diagnostic indication provided by the molding- system computer (100).
  • the molding-system computer (100) and the molding system (900) may be sold separately. That is, the molding- system computer (100) may be sold as a retrofit item (assembly) that may be installed to an existing molding system (not depicted). In accordance with an option, it may be appreciated that the molding-system computer (100) may further include (and is not limited to): a molding system (900) configured to operatively connect with the molding-system computer (100). On the other hand, the molding- system computer (100) and the molding system (900) may be sold, to an end user, as an integrated product by one supplier.
  • FIG 1 depicts an example of a schematic representation of the all-hydraulic molding system (905), and an example of a schematic representation of a molding- system computer (100).
  • the all-hydraulic molding system (905) may also be called an injection-molding system for example.
  • the all-hydraulic molding system (905) includes (and is not limited to): (i) an extruder assembly (902), (ii) a clamp assembly (904), (iii) a runner system (916), and/or (iv) a mold assembly (918).
  • the extruder assembly (902) is configured, to prepare, in use, a heated, flowable resin, and is also configured to inject or to move the resin from the extruder assembly (902) toward the runner system (916).
  • Other names for the extruder assembly (902) may include injection unit, melt- preparation assembly, etc.
  • the clamp assembly (904) includes (and is not limited to): (i) a stationary platen (906), (ii) a movable platen (908), (iii) a rod assembly (910), (iv) a clamping assembly (912), and/or (v) a lock assembly (914).
  • the stationary platen (906) does not move; that is, the stationary platen (906) may be fixedly positioned relative to the ground or floor.
  • the movable platen (908) is configured to be movable relative to the stationary platen (906).
  • a platen-moving mechanism (not depicted but known) is connected to the movable platen (908), and the platen-moving mechanism is configured to move, in use, the movable platen (908).
  • the rod assembly (910) extends between the movable platen (908) and the stationary platen (906).
  • the rod assembly (910) may have, by way of example, four rod structures positioned at the corners of the respective stationary platen (906) and the movable platen (908).
  • the rod assembly (910) is configured to guide movement of the movable platen (908) relative to the stationary platen (906).
  • a clamping assembly (912) is connected to the rod assembly (910).
  • the stationary platen (906) is configured to support (or configured to position) the position of the clamping assembly (912).
  • the lock assembly (914) is connected to the rod assembly (910), or may alternatively be connected to the movable platen (908).
  • the lock assembly (914) is configured to selectively lock and unlock the rod assembly (910) relative to the movable platen (908).
  • the runner system (916) is attached to, or is supported by, the stationary platen (906).
  • the runner system (916) includes (and is not limited to) a molding-system computer (100).
  • the runner system (916) is configured to receive the resin from the extruder assembly (902).
  • the mold assembly (918) includes (and is not limited to): (i) a mold-cavity assembly (920), and (ii) a mold- core assembly (922) that is movable relative to the mold-cavity assembly (920).
  • the mold-core assembly (922) is attached to or supported by the movable platen (908).
  • the mold-cavity assembly (920) is attached to or supported by the runner system (916), so that the mold-core assembly (922) faces the mold-cavity assembly (920).
  • the runner system (916) is configured to distribute the resin from the extruder assembly (902) to the mold assembly (918).
  • the movable platen (908) is moved toward the stationary platen (906) so that the mold-cavity assembly (920) is closed against the mold-core assembly (922), so that the mold assembly (918) may define a mold cavity configured to receive the resin from the runner system (916).
  • the lock assembly (914) is engaged so as to lock the position of the movable platen (908) so that the movable platen (908) no longer moves relative to the stationary platen (906).
  • the clamping assembly (912) is then engaged to apply a clamping pressure, in use, to the rod assembly (910), so that the clamping pressure then may be transferred to the mold assembly (918).
  • the extruder assembly (902) pushes or injects, in use, the resin to the runner system (916), which then the runner system (916) distributes the resin to the mold cavity structure defined by the mold assembly (918).
  • the clamping assembly (912) is deactivated so as to remove the clamping force from the mold assembly (918)
  • the lock assembly (914) is deactivated to permit movement of the movable platen (908) away from the stationary platen (906), and then a molded article may be removed from the mold assembly (918). It will be appreciated that the may include more than two platens.
  • the molding system (900) includes (and is not limited to): a third platen (not depicted), which is also called a clamping platen that is known in the art and thus is not described here in greater detail. Additional details regarding the molding-system computer (100)
  • an executable file causes the molding-system computer (100) to perform indicated tasks according to encoded instructions, as opposed to a data file that must be parsed by a program to be meaningful.
  • These instructions are machine-code instructions for a physical central processing unit.
  • a file containing instructions such as bytecode
  • a scripting language source file may therefore be considered executable in this sense.
  • the most common analog feature is programmable slew rate and drive strength on each output pin, allowing the engineer to set slow rates on lightly loaded pins that would otherwise ring unacceptably, and to set stronger, faster rates on heavily loaded pins on high-speed channels that would otherwise run too slow.
  • Another relatively common analog feature is differential comparators on input pins designed to be connected to differential signaling channels.
  • a few "mixed signal FPGAs" have integrated peripheral Analog-to-Digital Converters (ADCs) and Digital-to-Analog Converters (DACs) with analog signal conditioning blocks allowing them to operate as a system-on-a-chip. Such devices blur the line between an FPGA, which carries digital ones and zeros on its internal programmable interconnect fabric, and field-programmable analog array (FPAA), which carries analog values on its internal programmable interconnect fabric.
  • ADCs Analog-to-Digital Converters
  • DACs Digital-to-Analog Converters
  • an assembly is functionally equivalent to “at least one assembly”.
  • An assembly is not limited to one and only one assembly, it is understood that “an assembly” and “at least one assembly” means that there is one or more instances of the assembly. It is understood that “an assembly, system, component, or entity, etc” is functionally equivalent to “at least one or more assemblies, systems, components, or entities”.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention porte sur un calculateur de système de moulage (100) comprenant : un ensemble de calcul (110) conçu pour déterminer si des informations indiquant une performance de fonctionnement d'un ensemble (903) d'un système de moulage (900) sont acceptables ou non.
PCT/CA2013/050166 2012-03-29 2013-03-06 Calculateur de système de moulage conçu pour déterminer si des informations indiquant une performance de fonctionnement de l'ensemble du système de moulage sont acceptables ou non Ceased WO2013142987A1 (fr)

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US201261617106P 2012-03-29 2012-03-29
US61/617,106 2012-03-29

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WO2013142987A1 true WO2013142987A1 (fr) 2013-10-03

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI618261B (zh) * 2016-12-07 2018-03-11 財團法人金屬工業研究發展中心 製造金字塔結構的蝕刻劑及蝕刻方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5316707A (en) * 1991-09-05 1994-05-31 Tempcraft, Inc. Injection molding apparatus control system and method of injection molding
US20070294121A1 (en) * 2006-06-16 2007-12-20 Husky Injection Molding Systems Ltd. Preventative Maintenance System

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5316707A (en) * 1991-09-05 1994-05-31 Tempcraft, Inc. Injection molding apparatus control system and method of injection molding
US20070294121A1 (en) * 2006-06-16 2007-12-20 Husky Injection Molding Systems Ltd. Preventative Maintenance System

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI618261B (zh) * 2016-12-07 2018-03-11 財團法人金屬工業研究發展中心 製造金字塔結構的蝕刻劑及蝕刻方法

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