WO2021091191A1 - 인공지능 기반의 사출성형시스템 및 성형조건 생성방법 - Google Patents
인공지능 기반의 사출성형시스템 및 성형조건 생성방법 Download PDFInfo
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- WO2021091191A1 WO2021091191A1 PCT/KR2020/015202 KR2020015202W WO2021091191A1 WO 2021091191 A1 WO2021091191 A1 WO 2021091191A1 KR 2020015202 W KR2020015202 W KR 2020015202W WO 2021091191 A1 WO2021091191 A1 WO 2021091191A1
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- Prior art keywords
- molding
- injection
- state data
- limit value
- changed
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- 238000000465 moulding Methods 0.000 title claims abstract description 233
- 238000001746 injection moulding Methods 0.000 title claims abstract description 104
- 238000013473 artificial intelligence Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 38
- 238000002347 injection Methods 0.000 claims abstract description 216
- 239000007924 injection Substances 0.000 claims abstract description 216
- 238000012423 maintenance Methods 0.000 claims abstract description 35
- 239000012778 molding material Substances 0.000 claims abstract description 33
- 238000013528 artificial neural network Methods 0.000 claims description 9
- 230000002950 deficient Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000013135 deep learning Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 235000019800 disodium phosphate Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920001690 polydopamine Polymers 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
Images
Classifications
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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
- B29C45/766—Measuring, controlling or regulating the setting or resetting of moulding conditions, e.g. before starting a cycle
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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
- 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
- B29C45/03—Injection moulding apparatus
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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
- B29C45/7646—Measuring, controlling or regulating viscosity
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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
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
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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
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- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
- G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
- G05B13/0265—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric the criterion being a learning criterion
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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
- 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
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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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
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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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
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- B29C2945/76003—Measured parameter
- B29C2945/7605—Viscosity
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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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
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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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
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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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
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- B29C2945/76494—Controlled parameter
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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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
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- B29C2945/76494—Controlled parameter
- B29C2945/76595—Velocity
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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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
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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
- 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
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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
- 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
- B29C2945/76979—Using a neural network
Definitions
- the present invention relates to an injection molding system, and more particularly, to the control of the injection molding system.
- Injection molding is the most widely used manufacturing method in manufacturing plastic products.
- products such as TVs, mobile phones, PDAs, etc.
- various parts including covers and cases may be manufactured through injection molding.
- manufacturing of a product through injection molding is carried out through the following processes. First, a molding material to which pigments, stabilizers, plasticizers, fillers, and the like are added is put into a hopper to make it molten. Next, the molten molding material is injected into the mold and then cooled to solidify. Next, after extracting the solidified molding material from the mold, unnecessary parts are removed. Products having various types and sizes are manufactured through these processes.
- An injection molding machine is used as an equipment for performing such injection molding.
- the injection molding machine includes an injection device for supplying a molding material in a molten state, and a clamping device for solidifying the molding material in a molten state through cooling.
- the present invention is to solve the above-described problems, and provides an artificial intelligence-based injection molding system capable of changing molding conditions so that good products can be produced when defective products are produced due to disturbance during product injection molding. Make it a technical task.
- a method for generating molding conditions of an artificial intelligence-based injection molding system includes the molding that is injected into the mold when injection molding a product by injecting a molding material into a mold.
- the molding condition generating device implemented by a deep learning-based neural network network can automatically change the molding conditions, thereby improving product quality. It works.
- the molding condition generating device since the changing of the molding conditions is automatically performed by the molding condition generating device, there is an effect that the molding conditions can be changed to the good quality conditions in a short time even if there is no skilled expert.
- FIG. 1 is a view showing an artificial intelligence-based injection molding system according to an embodiment of the present invention.
- FIG. 2 is a view showing the configuration of an injection molding machine according to an embodiment of the present invention.
- 3 is a view showing that the fixed mold and the moving mold are opened.
- FIG. 4 is a view showing that a fixed mold and a moving mold are molded and closed by a moving part.
- FIG. 5 is a view showing the configuration of a molding condition generating apparatus according to an embodiment of the present invention.
- FIG. 6 is a flowchart showing a method of generating a molding condition according to an embodiment of the present invention.
- FIG. 7 is a flowchart showing a method of changing molding conditions according to an embodiment of the present invention.
- FIG. 1 is a view showing an artificial intelligence-based injection molding system according to an embodiment of the present invention.
- the artificial intelligence-based injection molding system (10, hereinafter referred to as'injection molding system') according to the present invention uses molding materials to produce products according to optimal molding conditions.
- the injection molding system 10 includes an injection molding machine 100 and a molding condition generating device 200.
- the injection molding machine 100 performs injection molding to manufacture a product.
- FIGS. 1 and 2 are views showing the configuration of an injection molding machine 100 according to an embodiment of the present invention.
- the injection molding machine 100 will be described in more detail with reference to FIGS. 1 and 2.
- the injection molding machine 100 includes an injection device 102 and a clamping device 103.
- the injection device 102 supplies the molded material in a molten state to the clamping device 103.
- the injection device 102 may include a barrel 121, an injection screw 122 disposed inside the barrel 121, and an injection drive unit 123 for driving the injection screw 122.
- the barrel 121 may be disposed parallel to the first axis direction (X axis direction).
- the first axial direction (X-axis direction) may be a direction parallel to a direction in which the injection device 102 and the clamping device 103 are spaced apart from each other.
- the injection drive unit 123 rotates the injection screw 122 to move the molding material supplied into the barrel 121 in the first direction (FD arrow direction). I can.
- the molding material can be melted by friction and heating.
- the first direction (FD arrow direction) is a direction from the injection device 102 toward the clamping device 103 and may be a direction parallel to the first axis direction (X-axis direction).
- the injection drive unit 123 can move the injection screw 122 in the first direction (FD arrow direction). . Accordingly, the molten molding material can be supplied from the barrel 121 to the clamping device 103.
- the clamping device 103 solidifies the molten molding material through cooling.
- the clamping device 103 is a fixed mold plate 131 to which the fixed mold 150 is coupled, a moving mold plate 132 to which the moving mold 160 is coupled, and the moving mold plate 132 in the first axis direction (X-axis direction). It may include a moving unit 133 to move along.
- 3 and 4 are views showing that a moving part molds and closes a fixed mold and a moving mold.
- the moving part 133 moves the moving platen 132 in the second direction (the direction of the SD arrow) to mold-close the moving mold 160 and the fixed mold 150, the injection device 102 A molten molding material is supplied into the fixed mold 150.
- the second direction (SD arrow direction) is a direction parallel to the first axis direction (X axis direction) and opposite to the first direction (FD arrow direction).
- the clamping device 103 may include a tie bar 134.
- the tie bar 134 guides the movement of the moving platen 132.
- the movable platen 132 may be movably coupled to the tie bar 134.
- the moving platen 132 may move along the tie bar 134 in the first axis direction (X axis direction).
- the tie bar 134 may be disposed parallel to the first axis direction (X axis direction).
- the tie bar 134 may be coupled to be inserted into each of the fixed plate 131 and the movable plate 132.
- the injection molding machine 100 produces a product by supplying the molding material to the molded moving mold 160 and the fixed mold 150 according to the molding conditions generated by the molding condition generating device 200.
- the moving mold 160 and the fixed mold 150 will be described as molds.
- the molding condition generating device 200 generates a molding condition and transmits it to the injection molding machine 100. In addition, when the injection molding machine 100 is producing a product according to the created molding condition, the molding condition generating device 200 determines whether the molding quality is maintained, and the molding quality is not maintained due to disturbance. If it is judged to be, the molding conditions are changed.
- the molding condition generating apparatus 700 includes an injection state data acquisition unit 710, a determination unit 720, a molding condition setting unit 730, and a molding quality maintenance model 735.
- the determination unit 720, the molding condition setting unit 730, and the molding quality maintenance model 735 are shown as separate configurations, but this is only an example, the determination unit 720 and the molding condition setting unit ( The 730 may be implemented as one engine 725 configured in a software form.
- the molding condition generating apparatus 700 according to the present invention may further include a model generating unit 740 and a database 750 as shown in FIG. 5.
- the injection state data acquisition unit 710 acquires injection state data from the injection molding machine 100 when the injection molding machine 100 is injection-molding a product.
- the injection state data may include at least one of a viscosity profile and an injection pressure value of a molding material injected into the mold.
- the viscosity profile of the molding material may be calculated based on the thickness of the injection product and the amount of pressure change according to the change of time inside the mold.
- the injection state data acquisition unit 710 may calculate the viscosity profile of the molding material using Equation 1 below.
- Equation 1 ⁇ represents the viscosity (Visocity), ⁇ w represents the shear stress (Wall Shear Stress), and ⁇ w represents the shear rate (Wall Shear Rate).
- H represents the thickness of the injection product
- L represents the flow distance defined as the distance between the pressure sensor and the temperature sensor (or the distance between two pressure sensors)
- ⁇ P represents the amount of pressure change
- ⁇ t represents the amount of time change.
- the amount of pressure change means the amount of pressure changed during the flow by the flow distance (L)
- the time change amount means the time taken during the flow by the flow distance (L).
- the injection state data acquisition unit 710 may measure the amount of change in pressure inside the mold according to the amount of time change or measure the injection pressure when the injection operation by the injection molding machine 100 is in progress.
- the injection state data acquisition unit 710 calculates the viscosity profile of the molding material using the measured time change amount, pressure change amount, thickness of the injection product, and flow distance.
- the injection state data acquisition unit 710 acquires the injection molding data from the injection molding machine 100 and provides it to the determination unit 720 at each predetermined time point or whenever an injection state data acquisition request is received from the determination unit 720. I can.
- the injection state data acquired at each predetermined time point or whenever a request for obtaining injection state data is received will be referred to as current injection state data.
- the injection state data acquisition unit 710 uses the injection state data obtained during injection molding of the product as a target injection state data. And may store the determined target injection state data in the database 750.
- the target injection state data may include at least one of a target viscosity profile and a target injection pressure value, and the target viscosity profile is the amount of time change measured during injection molding of the product when the produced product is a good product that satisfies a predetermined condition. , Pressure change, thickness of the injection product, and flow distance can be calculated.
- the determination unit 720 determines whether the quality of the product is maintained equal to the quality of the injected product according to a predetermined molding condition, using the current injection state data acquired by the data acquisition unit 710.
- the predetermined molding condition may be an initial molding condition that was set during the initial operation of the injection molding machine 100 by the molding condition setting unit 730, and such an initial molding condition may be a molding condition obtained during the production of good products.
- the determination unit 720 may determine whether the molding quality is maintained by inputting the current injection state data obtained by the injection state data acquisition unit 710 into the molding quality maintenance model 735. have.
- the molding quality maintenance model 720 may be a deep learning-based neural network that is learned from the target injection state data, and the molding quality maintenance model 735 includes the input current injection state data. If it is determined that it deviates from the threshold range set based on the data, it may be determined that the molding quality is not maintained.
- the molding condition setting unit 730 sets an initial molding condition to be applied during the initial operation of the injection molding machine 100 and outputs it to the injection molding machine 100.
- the initial molding condition may include at least one of temperature and pressure inside the mold, injection pressure, barrel temperature, injection speed, holding time, and holding pressure.
- the initial molding conditions may be set to the molding conditions obtained during production of good products as described above.
- the molding condition setting unit 730 may change the molding conditions applied to the injection molding machine 100 according to the determination result of whether to maintain the molding quality by the determination unit 720.
- the molding condition setting unit 730 determines that the currently set molding conditions are maintained.
- the current injection state data obtained by the injection state data acquisition unit 710 is the target injection state data. Change the molding conditions to follow
- the molding condition setting unit 730 may change at least one of an injection speed, a barrel temperature, and a mold temperature among molding conditions.
- the molding condition setting unit 730 may first change a molding condition that can be applied easily and quickly among injection speed, barrel temperature, and mold temperature. For example, since the injection speed is a molding condition that can be changed immediately, the molding condition setting unit 730 may determine that the injection speed is changed first.
- the barrel temperature can be controlled, since the application takes longer than the injection speed, the molding condition setting unit 730 may determine that the barrel temperature is changed after the injection speed is changed.
- the mold temperature can be controlled, but since it is not a direct configuration of the injection molding machine 100, the application time is relatively long, so the molding condition setting unit 730 changes the mold temperature after the change of the barrel temperature. You can decide.
- the molding condition setting unit 730 uses the molding quality maintenance model 735 to determine the current injection state data and the target injection state data. The deviation is calculated and the injection speed is changed by a value proportional to the deviation so that the current injection state data follows the target injection state data.
- the molding condition setting unit 730 uses the molding quality maintenance model 735 to determine the difference between the current viscosity profile and the target viscosity profile. After calculating, the injection speed is changed by a value proportional to the deviation so that the current viscosity profile follows the target viscosity profile.
- the viscosity profile value is large, it means that the viscosity is high, indicating that the molding material does not flow well, so if the current viscosity profile is larger than the target viscosity profile, increase the injection speed or increase the barrel temperature or mold temperature. It can be lowered so that the molding material flows well.
- the molding condition setting unit 730 uses the molding quality maintenance model 735 to use the current injection pressure value and the target injection pressure value. After calculating the deviation of between, the injection speed is changed by a value proportional to the deviation so that the current injection pressure value follows the target injection pressure value.
- the molding condition setting unit 730 changes the injection speed within a predetermined injection speed limit value.
- the molding condition setting unit 730 uses the molding quality maintenance model 735 to set the current injection state data to the target injection state.
- the injection speed is changed to the injection speed limit value, and the barrel temperature is changed by a value proportional to the deviation.
- the molding condition setting unit 730 uses the molding quality maintenance model 735 to determine the difference between the current viscosity profile and the target viscosity profile. And, so that the current viscosity profile follows the target viscosity profile, the injection speed is changed to the injection speed limit value, and the barrel temperature is changed by a value proportional to the deviation.
- the molding condition setting unit 730 uses the molding quality maintenance model 735 to use the current injection pressure value and the target injection pressure value. Calculate the deviation of the gap, change the injection speed to the injection speed limit value so that the current injection pressure value follows the target injection pressure, and change the barrel temperature by a value proportional to the deviation.
- the molding condition setting unit 730 changes the barrel temperature within a predetermined barrel temperature limit value.
- the molding condition setting unit 730 may change the barrel temperature by a value proportional to the remaining deviation excluding the deviation applied when the injection speed is changed to the injection speed limit value.
- the molding condition setting unit 730 uses the molding quality maintenance model 735 to set the current injection state data to the target injection state.
- the barrel temperature is changed to the barrel temperature limit value, and the mold temperature is changed by a value proportional to the deviation.
- the molding condition setting unit 730 uses the molding quality maintenance model 735 to determine the difference between the current viscosity profile and the target viscosity profile. And, so that the current viscosity profile follows the target viscosity profile, the injection speed is changed to the injection speed limit value, the barrel temperature is changed to the barrel temperature limit value, and the mold temperature is changed by a value proportional to the deviation.
- the molding condition setting unit 730 uses the molding quality maintenance model 735 to use the current injection pressure value and the target injection pressure value. Calculate the deviation of the gap, change the injection speed to the injection speed limit value, change the barrel temperature to the barrel temperature limit value, and change the mold temperature by a value proportional to the deviation so that the current injection pressure value follows the target injection pressure. Let it.
- the molding condition setting unit 730 changes the mold temperature within a predetermined mold temperature limit value.
- the molding condition setting unit 730 except for the deviation applied when the injection speed is changed to the injection speed limit value and the deviation applied when the barrel temperature is changed to the barrel temperature limit value, is a value proportional to the remaining deviation. You can also change the mold temperature.
- the molding condition setting unit 730 changes the mold temperature to the mold temperature limit value when the mold temperature exceeds the mold temperature limit value.
- the molding condition generating device 200 determines that it is difficult to maintain the molding quality and may generate an alarm to the operator. .
- the molding condition setting unit 730 when there is a difference between the current injection state data and the target injection state data, includes the injection speed, the barrel temperature, and the mold so that the current injection state data follows the target injection state data. Since the temperature is sequentially changed, even if disturbance occurs during injection, the quality of the product produced through injection can be maintained at the same level as the good product.
- the molding quality maintenance model 735 composed of a deep learning-based neural network network
- the molding condition setting unit 730 outputs the changed molding conditions to the injection molding machine 100. Accordingly, the injection molding machine 100 produces a product by performing injection molding according to the changed molding conditions.
- the molding quality maintenance model 735 determines whether to maintain the molding quality based on the current injection state data and the target injection state data.
- the molding quality maintenance model 735 may be learned by the model generator 740.
- the molding quality maintenance model 735 may be a deep learning-based neural network network that enables it to be determined whether or not to maintain the molding quality based on a plurality of weights and a plurality of biases. If this embodiment is followed, the molding quality maintenance model 735 may be implemented with an artificial neural network (ANN) algorithm.
- ANN artificial neural network
- the model generation unit 740 generates a molding quality maintenance model 735 and learns the generated molding quality maintenance model 735. Specifically, the model generation unit 740 may generate a molding quality maintenance model 735 by learning a neural network network using a plurality of target injection state data as a training data set.
- the model generation unit 740 generates a plurality of training data sets using at least one of a target viscosity profile and a target injection pressure value acquired during the production of good products, and trains a neural network network with the generated plurality of training data sets. By doing so, a molding quality maintenance model 735 is generated.
- the model generation unit 740 may learn the molding quality maintenance model 735 by using the new target injection state data.
- the present invention determines whether or not to maintain the molding quality and changes the molding conditions for maintaining the molding quality through the molding quality maintenance model 735 generated by the model generation unit 740 by the operator without specialized knowledge about injection molding. As it can be guided to perform the injection process, the dependence of experts on the injection operation is reduced, and thus a smart factory in the injection field can be established based on an unmanned injection molding system.
- the database 750 may store current injection state data and target injection state data generated by the injection state data acquisition unit 710. In addition, molding conditions set or changed by the molding condition setting unit 730 may be stored in the database 750. In addition, the database 750 may store various types of information used during injection molding.
- FIG. 6 is a flowchart showing a method of generating molding conditions in an injection molding system according to an embodiment of the present invention.
- the method of generating molding conditions in the injection molding system shown in FIG. 6 can be performed by the injection molding system shown in FIG. 1.
- the injection molding machine 100 produces a product according to the molding conditions set by the molding condition generating device 200 (S800).
- the injection molding machine may set a molding condition that was applied when a good product was being produced as an initial molding condition.
- the molding condition generating device 200 includes at least one of a current viscosity profile and a current injection pressure value of the molding material injected into the mold of the injection molding machine 100.
- the current injection state data is acquired (S810).
- the current viscosity profile may be calculated using the time change amount, the pressure change amount, the thickness of the injection product, and the flow distance during the injection molding of the product.
- the molding condition generating apparatus 200 determines whether or not the molding quality is maintained based on the current injection molding data and the target injection molding data (S820).
- the target injection molding data refers to the injection state data that was acquired while producing good products.
- the molding condition generating apparatus 200 may determine whether to maintain the molding quality by inputting the current injection state data to the molding quality maintenance model learned as the target injection state data.
- the molding condition generating device 200 determines that the molding quality is not maintained when it is determined that the current injection state data is out of the threshold range set based on the target injection state data by the molding quality maintenance model. If it is judged that it does not deviate from, it is judged that the molding quality is maintained.
- the molding condition generating apparatus 200 changes the preset molding conditions so that the current injection state data follows the target injection state data (S830).
- the molding condition generating apparatus 200 may change at least one of an injection speed, a barrel temperature, and a mold temperature among preset molding conditions.
- the injection molding machine 100 performs injection molding according to the changed molding conditions (S800).
- the molding condition generating apparatus 200 determines that the currently applied molding condition is maintained (S840).
- the injection molding machine 100 performs injection molding according to the applied molding condition (S800).
- FIG. 9 is a flowchart showing a process of changing the molding condition by the molding condition generating apparatus according to an embodiment of the present invention.
- the process shown in FIG. 9 is performed by the molding condition generating apparatus 200, and the molding condition generating apparatus 200 may perform the process shown in FIG. 9 using a molding quality maintenance model.
- the molding condition generating apparatus 200 calculates a deviation between the current injection state data and the target injection state data (S900).
- the molding condition generating device 200 changes the injection speed by a value proportional to the deviation (S910).
- the molding condition generating device 200 determines whether the changed injection speed exceeds the injection speed limit value (S920).
- the molding condition generating device 200 outputs the changed molding conditions including the changed injection speed to the injection molding machine 100 (S1000).
- the molding condition generating device 200 changes the injection speed to the injection speed limit value (S930), and the barrel temperature is proportional to the deviation.
- the barrel temperature may be changed as much as a value proportional to the remaining deviation, excluding the deviation applied when the injection speed is changed to the injection speed limit value.
- the molding condition generating device 200 determines whether the changed barrel temperature exceeds the barrel temperature limit value (S950).
- the molding condition generating device 200 applies the changed molding conditions including the changed injection speed (injection speed limit value) and the changed barrel temperature to the injection molding machine 100. ) Is output (S1000).
- the molding condition generating device 200 changes the barrel temperature to the barrel temperature limit value (S960), and the mold temperature by a value proportional to the deviation.
- the mold temperature may be changed by a value proportional to the remaining deviations excluding the deviation applied when the injection speed is changed to the injection speed limit value and the deviation applied when the barrel temperature is changed to the barrel temperature limit value.
- the molding condition generating apparatus 200 determines whether the changed mold temperature exceeds the mold temperature limit value (S980).
- the molding condition generating device 200 stores the changed injection speed (injection speed limit value), the changed barrel temperature (barrel temperature limit value), and the changed mold temperature.
- the changed molding conditions including, are output to the injection molding machine 100 (S1000).
- the molding condition generating device 200 changes the mold temperature to the mold temperature limit value (S990), and the changed injection speed (injection speed limit value),
- the changed molding conditions including the changed barrel temperature (barrel temperature limit value) and the changed mold temperature (mold temperature limit value) are output to the injection molding machine 100 (S1000).
- the molding condition generating device 200 may determine that it is difficult to maintain the molding quality and may generate an alarm to the operator.
- This component is a series of computer-readable or machine-readable media including volatile and non-volatile memory such as RAM, ROM, flash memory, magnetic or optical disks, optical memory, or other storage media. It can be provided as computer directives.
- the directives may be provided as software or firmware, and may, in whole or in part, be implemented in a hardware configuration such as ASICs, FPGAs, DSPs, or any other similar device.
- the directives may be configured to be executed by one or more processors or other hardware configurations, wherein the processor or other hardware configurations perform all or part of the methods and procedures disclosed herein when executing the series of computer directives, or To be able to perform.
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Abstract
Description
Claims (16)
- 성형재료를 금형에 주입하여 제품을 사출성형 하는 사출성형기(100);상기 제품의 사출성형 시 상기 금형 내부에 주입되어 있는 상기 성형재료의 점도 프로파일 및 사출압력 값 중 적어도 하나를 포함하는 현재 사출상태 데이터를 획득하는 사출상태 데이터 획득부(710);미리 정해진 타겟 사출상태 데이터로 학습된 성형품질 유지모델(735)에 상기 현재 사출상태 데이터를 입력하여 성형품질 유지여부를 판단하는 판단부(720); 및상기 판단부(720)에 의해 성형품질이 유지되지 않는 것으로 판단되면 상기 현재 사출상태 데이터가 상기 타겟 사출상태 데이터를 추종하도록 기 설정된 성형조건을 변경시키는 성형조건 설정부(730)를 포함하는 것을 특징으로 하는 인공지능 기반의 사출성형시스템.
- 제1항에 있어서,상기 성형조건 설정부(730)는 상기 성형조건 중 사출속도, 배럴온도, 및 금형온도 중 적어도 하나를 변경시키는 것을 특징으로 하는 인공지능 기반의 사출성형시스템.
- 제1항에 있어서,상기 사출상태 데이터 획득부(710)는, 사출성형되는 상기 제품의 두께 및 상기 금형 내부에서 시간 변화에 따른 압력 변화량을 이용하여 상기 점도 프로파일을 획득하는 것을 특징으로 하는 인공지능 기반의 사출성형시스템.
- 제1항에 있어서,상기 타겟 사출상태 데이터는 양품의 사출성형 시 획득된 타겟 점도 프로파일 및 상기 양품의 사출성형 시 측정된 타겟 사출압력 값 중 적어도 하나를 포함하는 것을 특징으로 하는 인공지능 기반의 사출성형시스템.
- 제1항에 있어서,상기 판단부(720)는 상기 현재 사출상태 데이터가 상기 타겟 사출상태 데이터를 기준으로 설정된 임계범위를 벗어나는 것으로 판단되면 성형품질이 유지되지 않는 것으로 판단하는 것을 특징으로 하는 인공지능 기반의 사출성형시스템.
- 제1항에 있어서,상기 판단부(720)에 의해 성형품질이 유지되지 않는 것으로 판단되면,상기 성형조건 설정부(730)는, 상기 현재 사출상태 데이터와 상기 타겟 사출상태 데이터 간의 편차분을 산출하고, 상기 현재 사출상태 데이터가 상기 타겟 사출상태 데이터를 추종하도록 미리 정해진 사출속도 제한값 내에서 사출속도를 상기 편차분에 비례하는 값만큼 변경하는 것을 특징으로 하는 인공지능 기반의 사출성형시스템.
- 제6항에 있어서,상기 성형조건 설정부(730)는, 상기 사출속도를 상기 편차분에 비례하는 값만큼 변경하면 상기 사출속도가 상기 사출속도 제한값을 벗어나게 되는 경우, 상기 사출속도를 상기 사출속도 제한값으로 변경하고, 미리 정해진 배럴온도 제한값 내에서 배럴온도를 상기 편차분에 비례하는 값만큼 변경하는 것을 특징으로 하는 인공지능 기반의 사출성형시스템.
- 제7항에 있어서,상기 성형조건 설정부(730)는, 상기 배럴온도를 상기 편차분에 비례하는 값만큼 변경하면 상기 배럴온도가 상기 배럴온도 제한값을 벗어나게 되는 경우, 상기 배럴온도를 상기 배럴온도 제한값으로 변경하고, 미리 정해진 금형온도 제한값 내에서 금형온도를 상기 편차분에 비례하는 값만큼 변경하는 것을 특징으로 하는 인공지능 기반의 사출성형시스템.
- 제8항에 있어서,상기 성형조건 설정부(730)는, 상기 금형온도를 상기 편차분에 비례하는 값만큼 변경하면 상기 금형온도가 상기 금형온도 제한값을 벗어나게 되는 경우, 상기 금형온도를 상기 금형온도 제한값으로 변경하는 것을 특징으로 하는 인공지능 기반의 사출성형시스템.
- 제1항에 있어서,양품의 사출성형 시 측정된 복수개의 타겟 점도 프로파일 및 복수개의 타겟 사출압력 값 중 적어도 하나를 포함하는 상기 타겟 사출상태 데이터로 신경망 네트워크를 학습시켜 상기 성형품질 유지모델(735)을 생성하는 모델 생성부(740)를 더 포함하는 것을 특징으로 하는 인공지능 기반의 사출성형시스템.
- 성형재료를 금형에 주입하여 제품을 사출성형 할 때, 상기 금형 내부에 주입되어 있는 상기 성형재료의 점도 프로파일 및 사출압력 값 중 적어도 하나를 포함하는 현재 사출상태 데이터를 획득하는 단계;양품의 사출성형 시 측정된 타겟 점도 프로파일 및 타겟 사출압력 값 중 적어도 하나를 포함하는 타겟 사출상태 데이터로 학습된 성형품질 유지모델(735)에 상기 현재 사출상태 데이터를 입력하여 성형품질 유지여부를 판단하는 단계; 및성형품질이 유지되지 않는 것으로 판단되면, 상기 현재 사출상태 데이터가 상기 타겟 사출상태 데이터를 추종하도록 기 설정된 성형조건을 변경시키는 단계를 포함하는 것을 특징으로 하는 인공지능 기반 사출성형시스템의 성형조건 생성방법.
- 제11항에 있어서,상기 성형조건을 변경시키는 단계는,상기 성형조건 중 사출속도, 배럴온도, 및 금형온도 중 적어도 하나를 변경시키는 것을 특징으로 하는 인공지능 기반 사출성형시스템의 성형조건 생성방법.
- 제11항에 있어서,상기 성형조건을 변경시키는 단계는,성형품질이 유지되지 않는 것으로 판단되면, 상기 현재 사출상태 데이터와 상기 타겟 사출상태 데이터 간의 편차분을 산출하고, 미리 정해진 사출속도 제한값 내에서 사출속도를 상기 편차분에 비례하는 값만큼 변경하는 단계를 포함하는 것을 특징으로 하는 인공지능 기반 사출성형시스템의 성형조건 생성방법.
- 제13항에 있어서,상기 성형조건을 변경시키는 단계는,상기 사출속도를 상기 편차분에 비례하는 값만큼 변경하면 상기 사출속도가 상기 사출속도 제한값을 벗어나게 되는 경우, 상기 사출속도를 상기 사출속도 제한값으로 변경하고, 미리 정해진 배럴온도 제한값 내에서 배럴온도를 상기 편차분에 비례하는 값만큼 변경하는 단계를 더 포함하는 것을 특징으로 하는 인공지능 기반 사출성형시스템의 성형조건 생성방법.
- 제14항에 있어서,상기 성형조건을 변경시키는 단계는,상기 배럴온도를 상기 편차분에 비례하는 값만큼 변경하면 상기 배럴온도가 상기 배럴온도 제한값을 벗어나게 되는 경우, 상기 배럴온도를 상기 배럴온도 제한값으로 변경하고, 미리 정해진 금형온도 제한값 내에서 금형온도를 상기 편차분에 비례하는 값만큼 변경하는 단계를 더 포함하는 것을 특징으로 하는 인공지능 기반 사출성형시스템의 성형조건 생성방법.
- 제15항에 있어서,상기 성형조건을 변경시키는 단계는,상기 금형온도를 상기 편차분에 비례하는 값만큼 변경하면 상기 금형온도가 상기 금형온도 제한값을 벗어나게 되는 경우, 상기 금형온도를 상기 금형온도 제한값으로 변경하는 단계를 더 포함하는 것을 특징으로 하는 인공지능 기반 사출성형시스템의 성형조건 생성방법.
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CA3152556A CA3152556A1 (en) | 2019-11-08 | 2020-11-03 | Artificial intelligence-based injection molding system and method for creating molding conditions |
CN202080075512.8A CN114616083A (zh) | 2019-11-08 | 2020-11-03 | 基于人工智能的注塑成型系统以及成型条件生成方法 |
EP20885901.7A EP4056348A4 (en) | 2019-11-08 | 2020-11-03 | ARTIFICIAL INTELLIGENCE-BASED INJECTION MOLDING SYSTEM AND METHOD FOR CREATING MOLDING CONDITIONS |
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- 2020-11-03 WO PCT/KR2020/015202 patent/WO2021091191A1/ko unknown
- 2020-11-03 JP JP2022520141A patent/JP7286877B2/ja active Active
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WO2023085283A1 (ja) * | 2021-11-09 | 2023-05-19 | 株式会社Mazin | 情報処理装置、情報処理システム及びプログラム |
JP7530687B2 (ja) | 2021-11-09 | 2024-08-08 | 株式会社Mazin | 情報処理装置、情報処理システム及びプログラム |
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JP7286877B2 (ja) | 2023-06-05 |
JP2022550811A (ja) | 2022-12-05 |
CA3152556A1 (en) | 2021-05-14 |
US20220388215A1 (en) | 2022-12-08 |
CN114616083A (zh) | 2022-06-10 |
EP4056348A4 (en) | 2023-12-13 |
EP4056348A1 (en) | 2022-09-14 |
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