WO2022124033A1 - 発泡成形用の射出成形機および射出成形機の制御方法 - Google Patents
発泡成形用の射出成形機および射出成形機の制御方法 Download PDFInfo
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- WO2022124033A1 WO2022124033A1 PCT/JP2021/042337 JP2021042337W WO2022124033A1 WO 2022124033 A1 WO2022124033 A1 WO 2022124033A1 JP 2021042337 W JP2021042337 W JP 2021042337W WO 2022124033 A1 WO2022124033 A1 WO 2022124033A1
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- Prior art keywords
- pressure
- gas
- injection material
- injection
- molding machine
- Prior art date
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims description 38
- 238000010097 foam moulding Methods 0.000 title description 8
- 238000002347 injection Methods 0.000 claims abstract description 189
- 239000007924 injection Substances 0.000 claims abstract description 189
- 239000000463 material Substances 0.000 claims abstract description 165
- 238000010438 heat treatment Methods 0.000 claims abstract description 48
- 230000005856 abnormality Effects 0.000 claims abstract description 22
- 238000000465 moulding Methods 0.000 claims description 28
- 230000008569 process Effects 0.000 claims description 21
- 230000009467 reduction Effects 0.000 claims description 6
- 238000009530 blood pressure measurement Methods 0.000 claims description 3
- 230000006866 deterioration Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 9
- 239000007789 gas Substances 0.000 description 153
- 238000012545 processing Methods 0.000 description 21
- 235000003642 hunger Nutrition 0.000 description 20
- 230000037351 starvation Effects 0.000 description 19
- 230000007423 decrease Effects 0.000 description 13
- 239000011261 inert gas Substances 0.000 description 12
- 230000006835 compression Effects 0.000 description 11
- 238000007906 compression Methods 0.000 description 11
- 239000011347 resin Substances 0.000 description 10
- 229920005989 resin Polymers 0.000 description 10
- 238000005259 measurement Methods 0.000 description 7
- 238000011144 upstream manufacturing Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000010006 flight Effects 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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Definitions
- the present invention relates to an injection molding machine that injects an inert gas into an injection material to mold a foam molded product, and a control method for such an injection molding machine.
- An injection molding machine that obtains a foam molded product using a physical foaming agent that is, an inert gas
- the injection molding machine for foam molding is composed of a heating cylinder and a screw.
- the inside of the heating cylinder is divided into a plurality of sections according to the shape of the screw, and is provided with a first compression / measurement section, a starvation section, and a second compression / measurement section from upstream to downstream.
- the heating cylinder is provided with an inert gas injection section so as to correspond to the starvation section.
- the inert gas is supplied from a gas supply source such as a gas cylinder.
- the primary pressure of the gas supplied from the gas supply source is reduced to the secondary pressure by the pressure reducing valve.
- the inert gas of this secondary pressure is supplied to the injection section.
- the injection material is sent from upstream to downstream by a screw in the heating cylinder to be melted and kneaded in the first compression / weighing section. Then, in the starvation section, the pressure of the injection material decreases, and the inert gas of the secondary pressure is injected.
- the injection material into which the inert gas is injected is kneaded and compressed in the second compression / measurement section and weighed, and this is injected into a mold to obtain a foam molded product.
- the injection material may be pushed up at the injection part of the inert gas to block the injection part, so-called vent-up may occur.
- the injection molding machine for foam molding described in Patent Document 1 is provided with a vent-up detection mechanism in the injection portion, and when a vent-up occurs, it is mechanically detected and the injection material is pushed back into the heating cylinder. ing.
- the injection molding machine includes a heating cylinder provided with a gas injection port, a screw, a gas supply device, an injection material pressure sensor provided in the vicinity of the gas injection port of the heating cylinder, and control means.
- the gas supply device is provided with a gas supply source and a pressure adjusting means for adjusting the primary pressure of the gas from the gas supply source to the secondary pressure so that the gas of the secondary pressure is supplied from the gas inlet. do.
- the control means compares the injection material pressure detected by the injection material pressure detecting means with the secondary pressure to detect the abnormality.
- the injection molding machine 1 is roughly composed of a mold clamping device 2 and an injection device 3 provided on the bed B, and is provided by a controller 4 as a control means. It is designed to be controlled.
- the mold clamping device 2 may be configured as a direct pressure type, but in the present embodiment, it is composed of a toggle type. That is, the mold clamping device 2 is composed of a fixed plate 7, a movable plate 8, a mold clamping housing 9, tie bars 10, 10, ... That connect the mold clamping housing 9 and the fixing plate 7, and a toggle mechanism 11. It is configured.
- the molds 13 and 14 are provided on the fixed plate 7 and the movable plate 8. When the toggle mechanism 11 is driven, the molds 13 and 14 are molded.
- the injection device 3 is an injection device for foam molding using a physical foaming agent, that is, a gas, and is shown in FIG.
- the injection device 3 includes a heating cylinder 17 and a screw 18 contained in the heating cylinder 17.
- the groove depth of the flight changes from the upstream side to the downstream side, and the inside of the heating cylinder 17 is divided into a plurality of sections. That is, in the heating cylinder 17, from the upstream side, a supply section 20 in which the injection material is supplied and melted, a first compression / measurement section 21 in which the melted injection material is compressed, and a starvation section 22 in which the pressure of the injection material decreases. Then, it is divided into a second compression / measurement section 23.
- the heating cylinder 17 has a gas injection port 26 opened in the starvation section 22 so that gas can be injected into the injection material.
- the injection material and gas are kneaded in the second compression / measurement section 23.
- the gas supply device 28 is connected to the gas injection port 26.
- gas is supplied from the gas bombs 30 and 30 via the two gas cylinders 30 and 30, which are gas supply sources, the gas bomb on-off valves 31 and 31, and these gas bomb on-off valves 31 and 311.
- the secondary gas pipe 33, the pressure reducing valve 34 which is a pressure adjusting means for adjusting the gas pressure in the primary gas pipe 33, that is, the primary pressure to the secondary pressure, and the gas reduced to the secondary pressure by the pressure reducing valve 34 are supplied.
- the primary gas pipe 33 has a primary pressure gauge 41 which is a primary pressure detecting means for detecting a primary pressure
- the secondary gas pipe 36 has a secondary pressure which is a secondary pressure detecting means for detecting a secondary pressure.
- a total of 42 are provided respectively.
- the tip of the secondary gas pipe 36 is a gas supply unit 43, which is connected to the gas injection port 26.
- the primary pressure gauge 41 and the secondary pressure gauge 42 are connected to the controller 4, and the primary pressure and the secondary pressure are input to the controller 4. Further, the gas cylinder on-off valves 31, 31 and the pressure reducing valve 34 and the on-off valve 39 are connected to the controller 4, and the gas cylinder on-off valves 31, 31 and the pressure reducing valve 34 and the on-off valve 39 are controlled by the controller 4.
- the present invention can be carried out with one or three or more gas cylinders 30 as gas supply sources.
- the gas supply device 28 may be composed of, for example, gas cylinders 30, 30 and a booster, or a nitrogen generator and a booster.
- the on-off valve 39 may be provided in the middle of the gas pipe for supplying the gas of the secondary pressure to the gas injection port, or the on-off mechanism such as a needle valve operated by compressed air may be provided in the gas injection portion. good.
- the gas cylinder on-off valves 31 and 31 are gas supply source switching means for selectively switching which of the gas cylinders 30 and 30 which are gas supply sources is to be used. By opening and closing the gas cylinder on-off valves 31 and 31, the gas cylinders 30 and 30 to be used can be switched.
- nitrogen, carbon dioxide, etc. which are inert gases, are generally used, but any gas such as air, hydrocarbon gas, argon, helium, hydrogen, etc. that dissolves in the resin can be used. Does not matter.
- the gas cylinder on-off valve 31, the primary pressure gauge 41, the check valve 38, and the on-off valve 39 are provided, but these are not essential. However, if these are provided, various measures can be taken when an abnormality occurs. Further, in the present embodiment, most of the devices constituting the gas supply device 28 are connected to the controller 4, but they do not necessarily have to be connected. That is, it is not essential that the secondary pressure gauge 42 is also connected to the controller 4. However, when the secondary pressure gauge 42 is connected to the controller 4, the measured value of the secondary pressure, that is, the measured value of the secondary pressure is obtained. Then, the presence or absence of an abnormality can be determined by comparing the injection material pressure described below with the secondary pressure measurement value.
- the injection molding machine 1 is characterized in that an injection material pressure detecting means, that is, an injection material pressure sensor 40 is provided in the vicinity of the gas injection port 26 of the heating cylinder 17.
- the injection material pressure sensor 40 is also connected to the controller 4, and the injection material pressure in the vicinity of the gas injection port 26, that is, in the starvation section 22, is measured and input to the controller 4.
- the controller 4 compares the injection material pressure with the secondary pressure to determine normality / abnormality.
- the amount of gas dissolved in the injection material is controlled by the pressure of the gas supplied into the heating cylinder 17. Since the screw 18 arranged in the starvation section 22 has a deep groove depth in the flight and a large volume of the groove between the flights, the pressure sensed by the injection material pressure sensor 40 is not supplied when gas is not supplied. It will be almost zero. On the other hand, in the state of supplying gas, the pressure sensed by the injection material pressure sensor 40 is substantially equal to the pressure of the supplied gas, that is, the secondary pressure.
- a feeder 44 is attached to the heating cylinder 17 of the injection device 3 according to the present embodiment.
- the feeder 44 is also connected to the controller 4 and controlled, and the supply amount of the injection material from the hopper 45 to the heating cylinder 17 is controlled.
- the feeder 44 is provided with an injection material detection sensor 46, and this sensor 46 is also connected to the controller 4.
- the controller 4 can determine whether or not the injection material is properly supplied from the feeder 44 by the signal from the injection material detection sensor 46.
- the injection material detection sensor 46 may be attached to the feeder 44, or may be attached to the injection material supply port of the heating cylinder 17 or the hopper 45. Further, it may be provided in a material transfer device or the like that automatically supplies the injection material to the feeder 44 or the hopper 45. When the injection material detection sensor 46 is provided in the hopper 45, the material transfer device, or the like, it is sufficient to detect whether or not the injection material to be supplied to the feeder 44 remains.
- the amount of gas dissolved in the injection material is controlled by the pressure of the gas supplied into the heating cylinder 17.
- the screw 18 arranged in the starvation section 22 the groove depth of the flight is deep and the volume of the groove between the flights is large, so that the resin flowing in from the first compression / weighing section 21 upstream is depressurized.
- the injection material pressure is almost zero. Therefore, even a gas having a relatively low pressure that can be supplied from a gas cylinder or the like can be stably supplied.
- the gas supplied into the heating cylinder 17 fills the starvation section 22 of the heating cylinder 17. Since the gas acts isotropically as the fluid pressure, the injection material pressure in the starvation section 22 becomes substantially the same as the secondary pressure.
- the gas comes into contact with the molten resin in the starvation section 22, and the amount corresponding to the gas pressure is dissolved. That is, the amount of gas dissolved in the molten resin increases in proportion to the secondary pressure.
- the heating cylinder 17 is caused by a decrease in the secondary pressure and a decrease in the amount of gas supplied into the heating cylinder 17.
- the pressure of the gas in the starvation section 22 is reduced, and the amount of gas dissolved in the molten resin is reduced.
- the feeder 44 is used to reduce the supply amount of the resin material.
- the gas supplied into the heating cylinder 17 is liquidtightly sealed with a molten resin between the starvation section 22 and the first compression / measurement section 21.
- the seal may be broken temporarily or continuously and the gas may flow back to the primary side. There is.
- the pressure of the injection material is indirectly lowered due to the leakage of gas in the starvation section 22, it is possible to detect the backflow of gas by detecting this.
- the injection molding machine 1 can detect various abnormalities by comparing the injection material pressure and the secondary pressure of the gas in the controller 4, as will be described in detail next. .. Further, when the controller 4 detects an abnormality, it takes various measures according to the content of the abnormality. Various setting values and programs are provided in the controller 4 in order to detect an abnormality and take a response to the abnormality.
- the set value includes a secondary pressure set value which is a set value of the secondary pressure, a first to fourth threshold value which is a set value for determining an abnormality of the injection material pressure, and a first and second stable times.
- the program includes a program that implements alarm output, supply amount increase control, and supply amount decrease control, and these are provided in the controller 4.
- the control method of the injection molding machine according to the present embodiment will be described.
- the injection material pressure detected by the injection material pressure sensor 40 is input to the controller 4, and the controller 4 compares this with the secondary pressure of the gas to be normal / abnormal. And take necessary measures.
- the secondary pressure to be compared with the injection material pressure may be a secondary pressure set value preset in the controller 4 or a secondary pressure measured value detected by the secondary pressure gauge 42. May be good. This is because the secondary pressure set value and the secondary pressure measured value should be substantially equal. Further, the secondary pressure of the gas may be feedback-controlled by the controller 4 so as to be a secondary pressure set value. When the secondary pressure gauge 42 is not connected to the controller 4, the secondary pressure compared with the injection material pressure naturally becomes the secondary pressure set value. Further, when the secondary pressure to be compared with the injection material pressure is set as the secondary pressure set value, the secondary pressure gauge 42 is not indispensable in the configuration of the injection device 3 shown in FIG.
- the controller 4 compares the injection material pressure with the secondary pressure to determine normality / abnormality, and uses the first to fourth threshold values as the standard or as the standard for determining the response to be taken.
- FIG. 6 summarizes the normal / abnormal range determined by the secondary pressure and the 1st to 4th thresholds when the injection material pressure changes, and the response taken according to each state. .. With reference to this, the processing of the controller 4 will be described below.
- the controller 4 proceeds from the start to step S1 and determines whether or not the injection material pressure is larger than the value obtained by adding the first threshold value to the secondary pressure. When the injection material pressure is less than the value obtained by adding the first threshold value to the secondary pressure, the controller 4 proceeds to step S2. In step S2, the controller 4 determines whether or not the injection material pressure is smaller than the value obtained by subtracting the second threshold value from the secondary pressure. The controller 4 determines that it is normal when the injection material pressure is larger than the value obtained by subtracting the second threshold value from the secondary pressure. That is, the range larger than the lower second threshold value and less than the upper first threshold value with respect to the secondary pressure is defined as the normal pressure range of the injection material pressure. If the injection material pressure is in the normal pressure range, the controller 4 determines that the injection material pressure is normal and returns to the start.
- step S1 If it is determined in step S1 that the injection material pressure is larger than the secondary pressure and the difference is larger than the first threshold value, the controller 4 proceeds to step S3.
- step S3 the controller 4 checks whether the injection material pressure is greater than the secondary pressure and the difference is less than the third threshold. If it is above the third threshold, it is highly possible that vent-up has occurred. At this time, the controller 4 executes the stop processing SS.
- the controller 4 confirms in step S31 whether or not the opening / closing means, that is, the on / off valve 39 can be controlled. If there is an on-off valve 39, the controller 4 executes step S32 to close the on-off valve 39 and stop the gas supply. Then, regardless of the presence or absence of the on-off valve 39, the controller 4 executes step S33 and stops the molding cycle after waiting for the completion of the molding cycle currently being executed.
- the stop processing SS may be executed immediately or after a certain period of time or a certain period of grace, depending on the cause, urgency, classification of manned operation and unmanned operation, and the like. good. Further, the controller 4 may perform the alarm processing SB described later at the same time as or in advance of the stop processing SS in order to notify the operator of the abnormality.
- step S3 of the flowchart of FIG. 3 when the controller 4 determines that the difference between the injection material pressure and the secondary pressure is less than the third threshold value, the controller 4 executes the alarm processing SA.
- the controller 4 In the alarm processing SA, the controller 4 outputs an alarm to the effect that there is a danger of vent-up at the gas inlet 26.
- the alarm may be displayed as a message on the monitor attached to the controller 4, or an alarm sound may be output from the speaker. Alternatively, the administrator may be notified by e-mail or the like.
- step S4 it is checked whether or not there is a feeder 44 and whether or not it can be operated, that is, whether or not there is a feeder control means. If there is no feeder control means, the controller 4 performs the stop processing SS. That is, the controller 4 operates and closes the on-off valve 39, stops the gas supply, and waits for the completion of the currently executing molding cycle to stop the molding cycle. If there is a feeder control means, the controller 4 proceeds to step S5.
- step S5 the controller 4 implements the supply amount reduction control.
- the supply amount reduction control is a control that reduces the drive speed of the feeder 44 to reduce the supply amount of the injection material to the heating cylinder 17. By reducing the supply, the injection material pressure in the starvation section 22 is reduced. This ensures that the injection material pressure is within the normal pressure range.
- the controller 4 After implementing the supply amount reduction control, the controller 4 observes the progress in step S6. That is, the controller 4 monitors the injection material pressure and checks whether the injection material pressure returns to the normal pressure range within the first stable time. The controller 4 determines that it is normal if it returns to the normal pressure range within the first stable time. That is, the controller 4 returns the process to the start. However, if the injection material pressure does not return to the normal pressure range within the first stable time, the controller 4 implements the stop processing SS described above.
- step S2 only the processing when the injection material pressure is determined to be in the normal pressure range has been described. A case where the pressure deviates from the normal pressure range will be described.
- step S2 When it is detected in step S2 that the injection material pressure is equal to or less than the value obtained by subtracting the second threshold value from the secondary pressure, it is determined that the injection material pressure has fallen below the normal pressure range, and the controller 4 proceeds to step S7.
- step S7 the controller 4 checks whether the injection material pressure is larger than the value obtained by subtracting the fourth threshold value from the secondary pressure.
- the stop processing SS described above is carried out.
- the controller 4 performs the alarm processing SB when the injection material pressure is larger than the value obtained by subtracting the fourth threshold value from the secondary pressure.
- the controller 4 outputs an alarm to the effect that the injection material pressure drops and there is a risk of gas leakage or a drop in the gas cylinder pressure.
- the alarm may be displayed as a message on the monitor attached to the controller 4, or an alarm sound may be output from the speaker. Alternatively, the administrator may be notified by e-mail or the like.
- step S8 the controller 4 checks whether or not there is a feeder 44 and whether or not it can be operated, that is, whether or not there is a feeder control means. If there is no feeder control means, the controller 4 implements the stop processing SS described above. If there is a feeder control means, the controller 4 proceeds to step S9.
- step S9 the controller 4 implements the supply amount increase control.
- the supply amount increase control is a control in which the drive speed of the feeder 44 is increased to increase the supply amount of the injection material to the heating cylinder 17.
- the injection material pressure in the starvation section 22 is increased. This ensures that the injection material pressure is within the normal pressure range.
- the controller 4 After implementing the supply amount increase control, the controller 4 observes the progress in step S10. That is, the controller 4 monitors the injection material pressure and checks whether the injection material pressure returns to the normal pressure range within the second stable time. The controller 4 determines that it is normal if it returns to the normal pressure range within the second stable time. That is, the controller 4 returns the process to the start. However, if the injection material pressure does not return to the normal pressure range within the second stable time and the injection material pressure is equal to or less than the value obtained by subtracting the second threshold value from the secondary pressure, the controller 4 has already described the stop processing SS. To carry out.
- the controller 4 performs step S21 as shown in FIG.
- the controller 4 checks whether or not the injection material has fallen into the heating cylinder 17 at predetermined intervals by the injection material detection sensor 46, which is the injection material detection means. If the supply of the injection material is not normal, the controller 4 performs the stop processing SS described above.
- the first and second threshold values and the like are used for the secondary pressure to judge the normality / abnormality of the injection material pressure. It is desirable to set these first and second threshold values in the range of 0.1 to 1.5 MPa, more preferably 0.2 to 1.0 MPa. For the third and fourth threshold values, numerical values slightly larger than the first and second threshold values may be set, respectively.
- a ratio may be used instead of using a specific pressure value.
- the injection material pressure may be in the normal range of 95% to 110% of the secondary pressure. Even if the judgment is made using the ratio in this way, it is substantially the same as the judgment using the first and second threshold values. That is, it is the same as setting the first threshold value as 10% of the secondary pressure and the second threshold value as 5% of the secondary pressure.
- the upper and lower limits of the normal range For example, when the secondary pressure is set to 10 MPa, 10.5 MPa to 9.5 MPa may be set as the normal range. In this case as well, the same result as in the case of making a judgment using the first and second threshold values or the ratio can be obtained.
- control method of the injection molding machine according to the present embodiment can be applied to a case where the injection molding machine has a plurality of secondary pressure set values and the pressure is changed stepwise.
- the first and second threshold values are set so as to include the maximum and minimum values of a plurality of secondary pressure set values, or the settings corresponding to the first and second threshold values are set for each secondary pressure set value. You may set the value.
- the secondary pressure to be compared with the injection material pressure may use the secondary pressure set value set in the control means, or may be detected by the secondary pressure gauge 42.
- the measured value of the secondary pressure to be applied may be used. This is because if the starvation section 22 to which the gas is supplied is in a stable state, there is almost no difference between the two.
- the first, second, and fourth threshold values are used as the alarm SB, that is, the criterion for alarming the danger of gas leakage or decrease in gas cylinder pressure.
- the difference between the secondary pressure and the primary pressure can be used as a criterion more directly.
- the fifth threshold value is used as a criterion for determining the difference between the primary pressure and the secondary pressure, and when the difference between the primary pressure and the secondary pressure becomes less than the fifth threshold value, the danger of a decrease in the gas cylinder pressure is warned. You may.
- the fifth threshold value can be appropriately set according to the amount of gas used, and for example, 1 MPa can be used as one standard.
- the controller 4 has a gas supply source switching function, that is, a function of operating the gas cylinder on-off valves 31 and 31 in this embodiment to switch the gas cylinder 30 currently in use to another gas cylinder 30, the gas supply source is switched.
- Gas supply source switching control that automatically switches may be performed.
- the present invention is not limited to the embodiments already described, and various changes can be made without departing from the gist thereof. It goes without saying that it is possible.
- a guideline for changing the molding conditions may be displayed as a guidance instead of the supply increase control or supply decrease control of the feeder 44, and if the urgency is low, the stop processing SS may be displayed. Instead of executing it, it may be left as an alarm process and the worker may be dealt with.
- the plurality of examples described above can be carried out in combination as appropriate.
- a heating cylinder (17) provided with a gas inlet (26) and A screw (18) provided so as to be driveable in the heating cylinder (17), and A gas supply device (28) that supplies gas to the gas inlet (26),
- the injection material pressure detecting means (40) provided in the vicinity of the gas injection port (26) of the heating cylinder (17) and the injection material pressure detecting means (40).
- the gas supply device (28) is The gas supply source (30) that supplies gas and A pressure adjusting means (34) for adjusting the primary pressure of the gas from the gas supply source (30) to the secondary pressure is provided.
- the gas of the secondary pressure is supplied to the gas inlet (26).
- the control means (4) is an injection molding machine (1) that detects an abnormality by comparing the injection material pressure detected by the injection material pressure detecting means (40) with the secondary pressure. [2] In the control means (4), the normal pressure range, which is the normal pressure range of the injection material pressure, is larger than the value obtained by subtracting the second threshold from the secondary pressure and the value obtained by adding the first threshold to the secondary pressure.
- the control means (4) is at the gas inlet (26) when the injection material pressure is larger than the normal pressure range and the injection material pressure is less than the value obtained by adding the third threshold value to the secondary pressure.
- the heating cylinder (17) is attached with a feeder (44) for adjusting the supply amount of the injection material.
- the control means (4) controls the feeder (44) when the injection material pressure is larger than the normal pressure range and the injection material pressure is less than the value obtained by adding the third threshold value to the secondary pressure.
- the control means (4) executes a molding cycle stop process when the injection material pressure continues to exceed the normal pressure range during the first stable time from the start of the supply amount reduction control [4].
- the control means (4) executes a molding cycle stop process when the injection material pressure is equal to or higher than a value obtained by adding a third threshold value to the secondary pressure. ..
- the control means (4) is at the gas inlet (26) when the injection material pressure is smaller than the normal pressure range and the injection material pressure is larger than the value obtained by subtracting the fourth threshold value from the secondary pressure.
- the injection molding machine (1) according to [2] which issues an alarm for the danger of gas leakage or a decrease in supply gas pressure.
- a feeder (44) for adjusting the supply amount of the injection material is attached to the heating cylinder (17).
- the control means (4) controls the feeder (44) when the injection material pressure is smaller than the normal pressure range and the injection material pressure is larger than the value obtained by subtracting the fourth threshold value from the secondary pressure.
- the control means (4) executes a molding cycle stop process when the injection material pressure temporarily continues to fall below the normal pressure range during the second stable time from the start of the supply amount increase control.
- the injection molding machine (1) according to [8].
- the injection molding according to any one of [1] to [10], wherein the secondary pressure to be compared with the injection material pressure is a secondary pressure set value set in the control means (4).
- the gas supply device (28) includes a secondary pressure detecting means (42) for detecting the secondary pressure.
- the secondary pressure to be compared with the injection material pressure is the secondary pressure measurement value detected by the secondary pressure detecting means (42), according to any one of [1] to [10].
- Injection molding machine (1) includes an injection material detecting means (46) for confirming the supply of the injection material to the heating cylinder (17).
- the injection molding machine (1) according to any one of [1] to [12], wherein the control means (4) executes a molding cycle stop process when the injection material is interrupted and the injection material is detected to be cut off. ).
- the molding cycle stop process is any one of [5], [6], [9], [10], and [13], which is a process of waiting for the completion of the running molding cycle to stop the molding cycle.
- the injection molding machine (1) according to the section.
- the gas supply device (28) includes an on-off valve (31).
- the molding cycle stop process is a process of closing the on-off valve (31) and waiting for the completion of the running molding cycle to stop the molding cycle, [5], [6], [9], [10]. ],
- the injection molding machine (1) according to any one of [13].
- the gas supply device (28) includes a primary pressure detecting means (41) for detecting a primary pressure of gas from the gas supply source (30).
- the control means (4) compares the difference between the primary pressure and the secondary pressure and detects a pressure drop in the gas supply source (30).
- the injection molding machine (1) according to any one of [1] to [15], which issues an alarm prompting the replacement of the gas supply source (30) when the pressure drop of the gas supply source (30) is detected.
- the injection material pressure detecting means (40) provided in the vicinity of the gas injection port (26) of the heating cylinder (17) is provided.
- the gas supply device (28) is Gas supply source (30) and In a control method of an injection molding machine provided with a pressure adjusting means (34) for adjusting the primary pressure of gas from the gas supply source (30) to a secondary pressure.
- a control method for an injection molding machine wherein an injection material pressure is detected by the injection material pressure detecting means (40), and an abnormality is detected by comparing the secondary pressure with the injection material pressure.
- the present invention it is possible to promptly catch a sign that a vent-up or an abnormality in the supply of injection material occurs, and prevent the occurrence of defective products.
- the present invention that exhibits this effect is useful for an injection molding machine for foam molding and a control method for the injection molding machine.
- Injection molding machine Mold clamping device 3 Injection device 4 Controller 17 Heating cylinder 18 Screw 20 Supply section 21 First compression section 22 Hunger section 23 Second compression section 26 Gas inlet 28 Gas supply device 30 Gas bomb 31 Gas bomb on-off valve 33 Primary gas pipe 34 Pressure reducing valve 36 Secondary gas pipe 38 Check valve 39 On-off valve 40 Injection material pressure sensor 41 Primary pressure gauge 42 Secondary pressure gauge 44 Feeder 45 Hopper 46 Injection material detection sensor
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- Molding Of Porous Articles (AREA)
Abstract
Description
<射出成形機>
本実施の形態に係る射出成形機1は、図1に示されているように、ベッドBに設けられている型締装置2と射出装置3とから概略構成され、制御手段としてのコントローラ4によって制御されるようになっている。型締装置2は直圧式から構成することもできるが、本実施の形態においてはトグル式からなる。つまり型締装置2は、固定盤7と、可動盤8と、型締ハウジング9と、型締ハウジング9と固定盤7とを連結しているタイバー10、10、…と、トグル機構11とから構成されている。型締装置2は、金型13、14が固定盤7と可動盤8とに設けられている。トグル機構11を駆動すると金型13、14が型締めされるようになっている。
本実施の形態に係る射出装置3は物理発泡剤つまりガスを使用した発泡成形用の射出装置になっており、図2に示されている。射出装置3は加熱シリンダ17と、この加熱シリンダ17に入れられているスクリュ18とから構成されている。スクリュ18は、上流側から下流側に向かってフライトの溝深さが変化しており、加熱シリンダ17内が複数の区間に区分されている。すなわち加熱シリンダ17内は、上流側から、射出材料が供給され溶融する供給区間20、溶融した射出材料が圧縮される第1の圧縮・計量区間21、射出材料の圧力が低下する飢餓区間22、そして第2の圧縮・計量区間23に区分されている。加熱シリンダ17には飢餓区間22にガス注入口26が開けられており、射出材料にガスが注入されるようになっている。第2の圧縮・計量区間23において射出材料とガスが混錬される。
ガス注入口26には、本実施の形態に係るガス供給装置28が接続されている。ガス供給装置28は、ガス供給源である2本のガスボンベ30、30と、ガスボンベ開閉弁31、31と、これらガスボンベ開閉弁31、31を介してガスボンベ30、30からのガスが供給される1次ガス管33と、1次ガス管33内のガス圧つまり1次圧力を2次圧力に調整する圧力調整手段である減圧弁34と、減圧弁34によって2次圧力に減圧されたガスが供給される2次ガス管36と、2次ガス管36に設けられている逆止弁38と、同様に2次ガス管36に設けられている開閉手段である開閉弁39とから構成されている。1次ガス管33には1次圧力を検出する1次圧力検出手段である1次圧力計41が、2次ガス管36には2次圧力を検出する2次圧力検出手段である2次圧力計42がそれぞれ設けられている。2次ガス管36の先端はガス供給部43になっており、ガス注入口26に接続されている。
本実施の形態に係る射出成形機1は、加熱シリンダ17のガス注入口26の近傍に射出材料圧力検出手段、つまり射出材料圧力センサ40が設けられている点に特徴がある。この射出材料圧力センサ40もコントローラ4に接続され、ガス注入口26近傍つまり飢餓区間22における射出材料圧力が測定されてコントローラ4に入力される。コントローラ4は、この射出材料圧力を2次圧力と比較して正常/異常を判断するようになっている。
本実施の形態に係る射出装置3の加熱シリンダ17にはフィーダ44が取り付けられている。フィーダ44もコントローラ4に接続されて制御されるようになっており、ホッパ45からの射出材料の加熱シリンダ17への供給量が制御されるようになっている。このフィーダ44には射出材料検出センサ46が設けられ、このセンサ46もコントローラ4に接続されている。射出材料検出センサ46からの信号によってフィーダ44から射出材料が適切に供給されているか否かをコントローラ4が判断できるようになっている。なお、射出材料検出センサ46は、フィーダ44に取り付けても良いし、加熱シリンダ17の射出材料供給口やホッパ45に取り付けても良い。また、フィーダ44やホッパ45に射出材料を自動供給する材料搬送装置などに設けても良い。ホッパ45や材料搬送装置などに射出材料検出センサ46を設ける場合は、フィーダ44に供給する射出材料が残っているかを検出すれば良い。
本実施の形態に係る射出成形機1は、次に詳しく説明するように、コントローラ4において、射出材料圧力とガスの2次圧力とを比較することによって色々な異常を検出できるようになっている。またコントローラ4は異常を検出したとき、異常の内容に応じて色々な対応を採るようになっている。異常の検出や、異常に対する対応を採るために、コントローラ4には色々な設定値やプログラムが設けられている。設定値には、2次圧力の設定値である2次圧力設定値、射出材料圧力の異常を判断するための設定値である第1~4閾値、第1、2安定時間がある。プログラムには、警報出力、供給量増加制御、供給量減少制御を実施するプログラムがあり、これらがコントローラ4に設けられている。
以下、本実施の形態に係る射出成形機の制御方法を説明する。本実施の形態に係る射出成形機の制御方法では、射出材料圧力センサ40によって検出される射出材料圧力がコントローラ4に入力され、コントローラ4がこれをガスの2次圧力と比較して正常/異常を判断し、必要な対応を採る。
コントローラ4は、図3に示されているように、スタートからステップS1に移行して射出材料圧力が、2次圧力に第1閾値を加算した値より大きいか否かを判定する。射出材料圧力が2次圧力に第1閾値を加算した値未満である場合にはコントローラ4は、ステップS2に移行する。コントローラ4はステップS2において、射出材料圧力が2次圧力から第2閾値を減じた値より小さいか否かを判定する。コントローラ4は、射出材料圧力が、2次圧力から第2閾値減じた値より大きい場合には正常と判断する。つまり、2次圧力を基準として、下側の第2閾値より大きく、かつ上側の第1閾値未満の範囲を、射出材料圧力の正常圧力範囲とする。射出材料圧力が正常圧力範囲であれば、コントローラ4は、正常と判断してスタートに戻る。
[1]
ガス注入口(26)が設けられている加熱シリンダ(17)と、
前記加熱シリンダ(17)内で駆動可能に設けられているスクリュ(18)と、
前記ガス注入口(26)にガスを供給するガス供給装置(28)と、
前記加熱シリンダ(17)の前記ガス注入口(26)近傍に設けられている射出材料圧力検出手段(40)と、
制御手段(4)と、を備えた射出成形機(1)であって、
前記ガス供給装置(28)は、
ガスを供給するガス供給源(30)と、
前記ガス供給源(30)からのガスの1次圧力を2次圧力に調整する圧力調整手段(34)と、を備え、
前記2次圧力のガスを前記ガス注入口(26)に供給するようになっており、
前記制御手段(4)は、前記射出材料圧力検出手段(40)により検出される射出材料圧力と前記2次圧力とを比較して異常を検出する、射出成形機(1)。
[2]
前記制御手段(4)は、前記射出材料圧力の正常な圧力範囲である正常圧力範囲は前記2次圧力から第2閾値だけ減じた値より大きくかつ前記2次圧力に第1閾値を加算した値未満であるとし、前記正常圧力範囲に基づいて前記射出材料圧力の異常を検出する、[1]に記載の射出成形機(1)。
[3]
前記制御手段(4)は、前記射出材料圧力が前記正常圧力範囲より大きく、かつ前記射出材料圧力が前記2次圧力に第3閾値を加算した値未満のとき、前記ガス注入口(26)におけるベントアップの危険の警報を発する、[2]に記載の射出成形機(1)。
[4]
前記加熱シリンダ(17)は射出材料の供給量を調整するフィーダ(44)が取り付けられ、
前記制御手段(4)は、前記射出材料圧力が前記正常圧力範囲より大きく、かつ前記射出材料圧力が前記2次圧力に第3閾値を加算した値未満のとき、前記フィーダ(44)を制御して射出材料の供給量を減少させる供給量減少制御を実施する、[2]に記載の射出成形機(1)。
[5]
前記制御手段(4)は、前記供給量減少制御の開始から第1安定時間の間、前記射出材料圧力が前記正常圧力範囲を上回り続けた場合、成形サイクルの停止処理を実行する、[4]に記載の射出成形機(1)。
[6]
前記制御手段(4)は、前記射出材料圧力が前記2次圧力に第3閾値を加算した値以上のとき、成形サイクルの停止処理を実行する、[2]に記載の射出成形機(1)。
[7]
前記制御手段(4)は、前記射出材料圧力が前記正常圧力範囲より小さく、かつ前記射出材料圧力が前記2次圧力から第4閾値を減じた値より大きいとき、前記ガス注入口(26)におけるガス漏れあるいは供給ガス圧力の低下の危険の警報を発する、[2]に記載の射出成形機(1)。
[8]
前記加熱シリンダ(17)には射出材料の供給量を調整するフィーダ(44)が取り付けられ、
前記制御手段(4)は、前記射出材料圧力が前記正常圧力範囲より小さく、かつ前記射出材料圧力が前記2次圧力から第4閾値を減じた値より大きいとき、前記フィーダ(44)を制御して射出材料の供給量を増加させる供給量増加制御を実施する、[2]に記載の射出成形機(1)。
[9]
前記制御手段(4)は、前記供給量増加制御の開始から第2安定時間の間、前記射出材料圧力が前記正常圧力範囲を一時的に下回り続けた場合、成形サイクルの停止処理を実行する、[8]に記載の射出成形機(1)。
[10]
前記制御手段(4)は、前記射出材料圧力が前記2次圧力から第4閾値を減じた値以上小さいとき、成形サイクルの停止処理を実行する、[2]に記載の射出成形機(1)。
[11]
前記射出材料圧力と比較される前記2次圧力は、前記制御手段(4)において設定されている2次圧力設定値である、[1]~[10]のいずれかの項に記載の射出成形機(1)。
[12]
前記ガス供給装置(28)は、前記2次圧力を検出する2次圧力検出手段(42)を備え、
前記射出材料圧力と比較される前記2次圧力は、前記2次圧力検出手段(42)によって検出される2次圧力測定値である、[1]~[10]のいずれかの項に記載の射出成形機(1)。
[13]
前記射出成形機(1)は、前記加熱シリンダ(17)への射出材料の供給を確認する射出材料検出手段(46)を備え、
前記制御手段(4)は、前記射出材料が途切れて射出材料切れを検出したときに、成形サイクルの停止処理を実行する、[1]~[12]のいずれかに記載の射出成形機(1)。
[14]
前記成形サイクルの停止処理は、実行中の成形サイクルの完了を待って成形サイクルを停止する処理である、[5]、[6]、[9]、[10]、[13]のいずれかの項に記載の射出成形機(1)。
[15]
前記ガス供給装置(28)は開閉弁(31)を備え、
前記成形サイクルの停止処理は、前記開閉弁(31)を閉じると共に実行中の成形サイクルの完了を待って成形サイクルを停止する処理である、[5]、[6]、[9]、[10]、[13]のいずれかの項に記載の射出成形機(1)。
[16]
前記ガス供給装置(28)は、前記ガス供給源(30)からのガスの1次圧力を検出する1次圧検出手段(41)を備え、
前記制御手段(4)は、前記1次圧力と前記2次圧力との差を比較して前記ガス供給源(30)の圧力低下を検知し、
前記ガス供給源(30)の圧力低下を検知した場合、前記ガス供給源(30)の交換を促す警報を発する、[1]~[15]のいずれかに記載の射出成形機(1)。
[17]
ガス注入口(26)が設けられている加熱シリンダ(17)と、
前記加熱シリンダ(17)内で駆動可能に設けられているスクリュ(18)と、
前記ガス注入口(26)にガスを供給するガス供給装置(28)と、
前記加熱シリンダ(17)の前記ガス注入口(26)近傍に設けられている射出材料圧力検出手段(40)と、を備え、
前記ガス供給装置(28)は、
ガス供給源(30)と、
前記ガス供給源(30)からのガスの1次圧力を2次圧力に調整する圧力調整手段(34)と、を備えた射出成形機の制御方法において、
前記射出材料圧力検出手段(40)により射出材料圧力を検出し、前記2次圧力と前記射出材料圧力とを比較して異常を検出する、射出成形機の制御方法。
3 射出装置 4 コントローラ
17 加熱シリンダ 18 スクリュ
20 供給区間 21 第1の圧縮区間
22 飢餓区間 23 第2の圧縮区間
26 ガス注入口 28 ガス供給装置
30 ガスボンベ 31 ガスボンベ開閉弁
33 1次ガス管 34 減圧弁
36 2次ガス管 38 逆止弁
39 開閉弁 40 射出材料圧力センサ
41 1次圧力計 42 2次圧力計
44 フィーダ 45 ホッパ
46 射出材料検出センサ
Claims (17)
- ガス注入口が設けられている加熱シリンダと、
前記加熱シリンダ内で駆動可能に設けられているスクリュと、
前記ガス注入口にガスを供給するガス供給装置と、
前記加熱シリンダの前記ガス注入口近傍に設けられている射出材料圧力検出手段と、
制御手段と、を備えた射出成形機であって、
前記ガス供給装置は、
ガスを供給するガス供給源と、
前記ガス供給源からのガスの1次圧力を2次圧力に調整する圧力調整手段と、を備え、
前記2次圧力のガスを前記ガス注入口に供給するようになっており、
前記制御手段は、前記射出材料圧力検出手段により検出される射出材料圧力と前記2次圧力とを比較して異常を検出する、射出成形機。 - 前記制御手段は、前記射出材料圧力の正常な圧力範囲である正常圧力範囲は前記2次圧力から第2閾値だけ減じた値より大きくかつ前記2次圧力に第1閾値を加算した値未満であるとし、前記正常圧力範囲に基づいて前記射出材料圧力の異常を検出する、請求項1に記載の射出成形機。
- 前記制御手段は、前記射出材料圧力が前記正常圧力範囲より大きく、かつ前記射出材料圧力が前記2次圧力に第3閾値を加算した値未満のとき、前記ガス注入口におけるベントアップの危険の警報を発する、請求項2に記載の射出成形機。
- 前記加熱シリンダは射出材料の供給量を調整するフィーダが取り付けられ、
前記制御手段は、前記射出材料圧力が前記正常圧力範囲より大きく、かつ前記射出材料圧力が前記2次圧力に第3閾値を加算した値未満のとき、前記フィーダを制御して射出材料の供給量を減少させる供給量減少制御を実施する、請求項2に記載の射出成形機。 - 前記制御手段は、前記供給量減少制御の開始から第1安定時間の間、前記射出材料圧力が前記正常圧力範囲を上回り続けた場合、成形サイクルの停止処理を実行する、請求項4に記載の射出成形機。
- 前記制御手段は、前記射出材料圧力が前記2次圧力に第3閾値を加算した値以上のとき、成形サイクルの停止処理を実行する、請求項2に記載の射出成形機。
- 前記制御手段は、前記射出材料圧力が前記正常圧力範囲より小さく、かつ前記射出材料圧力が前記2次圧力から第4閾値を減じた値より大きいとき、前記ガス注入口におけるガス漏れあるいは供給ガス圧力の低下の危険の警報を発する、請求項2に記載の射出成形機。
- 前記加熱シリンダには射出材料の供給量を調整するフィーダが取り付けられ、
前記制御手段は、前記射出材料圧力が前記正常圧力範囲より小さく、かつ前記射出材料圧力が前記2次圧力から第4閾値を減じた値より大きいとき、前記フィーダを制御して射出材料の供給量を増加させる供給量増加制御を実施する、請求項2に記載の射出成形機。 - 前記制御手段は、前記供給量増加制御の開始から第2安定時間の間、前記射出材料圧力が前記正常圧力範囲を一時的に下回り続けた場合、成形サイクルの停止処理を実行する、請求項8に記載の射出成形機。
- 前記制御手段は、前記射出材料圧力が前記2次圧力から第4閾値を減じた値以上小さいとき、成形サイクルの停止処理を実行する、請求項2に記載の射出成形機。
- 前記射出材料圧力と比較される前記2次圧力は、前記制御手段において設定されている2次圧力設定値である、請求項1~10のいずれかの項に記載の射出成形機。
- 前記ガス供給装置は、前記2次圧力を検出する2次圧力検出手段を備え、
前記射出材料圧力と比較される前記2次圧力は、前記2次圧力検出手段によって検出される2次圧力測定値である、請求項1~10のいずれかの項に記載の射出成形機。 - 前記射出成形機は、前記加熱シリンダへの射出材料の供給を確認する射出材料検出手段を備え、
前記制御手段は、前記射出材料が途切れて射出材料切れを検出したときに、成形サイクルの停止処理を実行する、請求項1~12のいずれかに記載の射出成形機。 - 前記成形サイクルの停止処理は、実行中の成形サイクルの完了を待って成形サイクルを停止する処理である、請求項5、6、9、10、13のいずれかの項に記載の射出成形機。
- 前記ガス供給装置は開閉弁を備え、
前記成形サイクルの停止処理は、前記開閉弁を閉じると共に実行中の成形サイクルの完了を待って成形サイクルを停止する処理である、請求項5、6、9、10、13のいずれかの項に記載の射出成形機。 - 前記ガス供給装置は、前記ガス供給源からのガスの1次圧力を検出する1次圧検出手段を備え、
前記制御手段は、前記1次圧力と前記2次圧力との差を比較して前記ガス供給源の圧力低下を検知し、
前記ガス供給源の圧力低下を検知した場合、前記ガス供給源の交換を促す警報を発する、請求項1~15のいずれかに記載の射出成形機。 - ガス注入口が設けられている加熱シリンダと、
前記加熱シリンダ内で駆動可能に設けられているスクリュと、
前記ガス注入口にガスを供給するガス供給装置と、
前記加熱シリンダの前記ガス注入口近傍に設けられている射出材料圧力検出手段と、を備え、
前記ガス供給装置は、
ガス供給源と、
前記ガス供給源からのガスの1次圧力を2次圧力に調整する圧力調整手段と、を備えた射出成形機の制御方法において、
前記射出材料圧力検出手段により射出材料圧力を検出し、前記2次圧力と前記射出材料圧力とを比較して異常を検出する、射出成形機の制御方法。
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JP6055710B2 (ja) | 2013-04-02 | 2016-12-27 | 日立マクセル株式会社 | ベントアップ検出機構、ベントアップ防止装置、成形体の製造方法及び成形体の成形装置 |
JP7302319B2 (ja) | 2019-06-14 | 2023-07-04 | 株式会社リコー | 定着装置、定着装置製造方法、及び画像形成装置 |
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2020
- 2020-12-10 JP JP2020204670A patent/JP7463262B2/ja active Active
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2021
- 2021-11-17 CN CN202180082688.0A patent/CN116568477A/zh active Pending
- 2021-11-17 KR KR1020237017968A patent/KR20230117729A/ko unknown
- 2021-11-17 WO PCT/JP2021/042337 patent/WO2022124033A1/ja active Application Filing
- 2021-11-17 DE DE112021006365.0T patent/DE112021006365T5/de active Pending
- 2021-11-17 US US18/265,356 patent/US20240042664A1/en active Pending
- 2021-12-10 TW TW110146204A patent/TW202228981A/zh unknown
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JPS5971836A (ja) * | 1982-10-19 | 1984-04-23 | Toshiba Mach Co Ltd | 射出工程の射出圧力監視装置 |
JPS61182912A (ja) * | 1985-02-08 | 1986-08-15 | Nissei Plastics Ind Co | 発泡成形におけるガス状発泡剤の注入圧力制御方法 |
JPS63166513A (ja) * | 1986-12-27 | 1988-07-09 | Nissei Plastics Ind Co | 射出成形機の制御方法 |
JP2000176958A (ja) * | 1998-12-15 | 2000-06-27 | Niigata Eng Co Ltd | 発泡成形用射出成形機及び溶解促進工程における樹脂圧の制御方法 |
JP2001113556A (ja) * | 1999-10-22 | 2001-04-24 | Japan Steel Works Ltd:The | 熱可塑性樹脂発泡体の成形方法 |
JP2003251672A (ja) * | 2002-03-01 | 2003-09-09 | Japan Steel Works Ltd:The | 超臨界流体注入装置 |
JP2004155134A (ja) * | 2002-11-08 | 2004-06-03 | Sumitomo Heavy Ind Ltd | 自動可塑化装置及び方法 |
JP2015044315A (ja) * | 2013-08-27 | 2015-03-12 | ファナック株式会社 | 射出成形機の制御装置 |
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JP2022092099A (ja) | 2022-06-22 |
TW202228981A (zh) | 2022-08-01 |
DE112021006365T5 (de) | 2023-10-12 |
JP7463262B2 (ja) | 2024-04-08 |
CN116568477A (zh) | 2023-08-08 |
US20240042664A1 (en) | 2024-02-08 |
KR20230117729A (ko) | 2023-08-09 |
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