WO2014182021A1 - Systeme pour eau de refroidissement d'appareil de moulage par injection - Google Patents

Systeme pour eau de refroidissement d'appareil de moulage par injection Download PDF

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Publication number
WO2014182021A1
WO2014182021A1 PCT/KR2014/003956 KR2014003956W WO2014182021A1 WO 2014182021 A1 WO2014182021 A1 WO 2014182021A1 KR 2014003956 W KR2014003956 W KR 2014003956W WO 2014182021 A1 WO2014182021 A1 WO 2014182021A1
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WIPO (PCT)
Prior art keywords
temperature
cooling
water
cold
mold
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PCT/KR2014/003956
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English (en)
Korean (ko)
Inventor
박재우
Original Assignee
Park Jae U
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Publication date
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Publication of WO2014182021A1 publication Critical patent/WO2014182021A1/fr

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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
    • B29C45/78—Measuring, controlling or regulating of temperature
    • 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
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • 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
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • B29C45/7306—Control circuits therefor
    • 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
    • B29C2945/7604—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76177—Location of measurement
    • B29C2945/76297—Fluids
    • B29C2945/76304—Fluids temperature control fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76531—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76655—Location of control
    • B29C2945/76775—Fluids
    • B29C2945/76782—Fluids temperature control fluids

Definitions

  • the present invention relates to a cooling water control system capable of independently controlling temperature for each cooling flow path (cooling circuit) provided in a mold by mixing the cooling water (cooling fluid) used in the cooling process of the injection molding machine with cold / hot water.
  • the configuration of the cooling water can be selected as a single cold water or cold and hot water, so that the cooling process can be performed regardless of the conditions of the injection work site, and the use of the cooling water discharged after performing cooling in the mold.
  • the temperature of the cavity side of the mold can be measured to precisely control the temperature of the mold, as well as the built-in controller (main controller, monitor, operation panel) or hot runner of the injection molding machine.
  • the internal circuit configuration of the controller for the hot runner is partially changed to control each configuration of the present invention.
  • the present invention relates to a cooling water control system of an injection molding machine, which is configured to replace the function of an in-controller and can improve the facility compatibility, maintenance convenience, and precision of mold temperature control at an injection work site.
  • Injection molding is a production process that is widely used for mass production of plastic products. It is a process to plasticize polymer materials at high temperature, spray them at high speed and high pressure into molds, and fill products in the cavity. Accordingly, in order to improve the quality of injection molded products, mold design variables such as gate and cooling circuit, and molding process variables such as injection pressure and speed, injection temperature and mold temperature, holding pressure and speed, and process time Consideration is needed.
  • the mold temperature is an important variable affecting the flow characteristics of the polymer holding during injection molding and the heat transfer characteristics inside the mold after the filling is completed, which affects the fluidity and mechanical properties of the product.
  • Such mold temperature should be maintained at a relatively high temperature in order to improve the fluidity of the polymer resin during molding, whereas after molding, the elevated temperature has to be lowered to shorten the cooling time by cooling the mold. I have it. For this reason, a proper mold temperature is generally suggested in consideration of the moldability of the resin and the cooling characteristics of the mold for each polymer resin. As such, a number of technologies are being actively developed in the industry to control the mold temperature effectively.
  • Step 2 3 steps of opening the proportional control valve provided in the heat source supply pipe under the control of the control unit, 4 steps of the heat source is supplied to the mold to increase the temperature of the mold, and the temperature of the mold by the heat source supply Step 5 maintains the temperature of the mold in a warm state by closing the proportional control valve when the temperature approaches the set temperature, and opens and closes the on / off valve of the cooling water supply pipe to supply cooling water to the mold to cool the air or the air supply pipe.
  • step 6 to perform any one of the steps of cooling the mold by opening the on-off valve of the air supply, and the operation of the control unit after the steps 1 to 6 to stop the operation proportional to the heat source supply pipe and the cooling water supply pipe
  • Step 7 to close the control valve and the shut-off valve, and to open the on-off valve of the air supply pipe to inject air into the flow path in the mold
  • the patent is configured to control the temperature of the mold by configuring the cooling means through the cooling water supply pipe to control the temperature of the mold, or the temperature value of the mold only when the temperature sensor is attached to the mold itself to detect the temperature of the mold.
  • the cooling means through the cooling water supply pipe to control the temperature of the mold, or the temperature value of the mold only when the temperature sensor is attached to the mold itself to detect the temperature of the mold.
  • the present invention was invented to solve the above-mentioned problems, regardless of the temperature sensor of the mold itself to determine the temperature of each cavity side of the mold in real time to determine the temperature of the cooling water (cooling fluid) through precise temperature measurement
  • the problem to be solved is to provide a cooling water control system of the injection molding machine that can control the temperature of the mold to an appropriate level by adjusting.
  • the present invention is to provide the following solutions to solve the above-mentioned problems.
  • the present invention supplies cooling water in which cold water and hot water are mixed at different ratios to a plurality of cooling passages CL passing through a mold divided into an upper plate mold 1 and a lower plate mold 2 to control the temperature of the mold.
  • the control system comprises a cold water supply module 110 including a cold water tank 111 and a cooler 112, a hot water supply module 120 including a hot water tank 121 and a water heater 122, cold water and Cooling water supply unit 100 consisting of a supply valve means 130 for adjusting the mixing ratio of the hot water for each cooling flow path (CL); and the outlet temperature sensor or the mold temperature attached to the mold provided on the outlet (OUT) side of the cooling flow path Cooling water temperature sensing unit 200 for sensing the temperature information through the sensor; And, the return valve means 300 for distinguishing the cold water and hot water to the cooling water supply unit by comparing the temperature information with the set cold and hot water determination temperature; And, temperature information Of the supply valve means 130
  • a display unit 400 which displays an opening / closing degree; and an operation unit 500
  • the main controller 600 is a cooling fluid determination step of setting the flow path of the coolant supply unit 100 by the coolant control mode divided into cold and hot water mode and a single cold water mode (S100); and, the outlet temperature sensor or the mold temperature sensor Cooling water temperature measuring step (S200) for receiving the temperature information of the; and Cooling water temperature determining step (S300) for calculating a temperature control deviation that is the difference between the received temperature information and the upper and lower mold temperature; and, Temperature control deviation According to the cooling flow path (CL) according to the cooling and hot water mixing ratio determination step for determining the mixing ratio of hot and cold water (S400); and, by adjusting the opening and closing degree of the supply valve means 130 according to the mixing ratio to the amount of cold water and hot water Cold and hot water valve opening and closing control step (S500) to increase or decrease by each; and, Cooling step (S600) to proceed with the cooling process by supplying the sensitized cold and hot water to each cooling flow path; And, received again through the coolant temperature detection unit 200 On Cooling water return
  • the data storage step (S800) of storing the upper and lower mold temperature and the opening and closing degree of the supply and return valve means (130, 300) for each process time period; is configured to further perform after the last repeated cooling water return step (S700) It is characterized by.
  • the cooling water temperature determining step (S300) blocks the supply valve means 130 and the return valve means 300 to block the flow of the cooling water for a time set by the user when the temperature information is within the upper and lower mold temperature ranges. Characterized in that configured to stop.
  • the cooling water temperature determining step (S300) during the time set by the user or calculated in proportion to the temperature control deviation by blocking the supply valve means 130 and the return valve means 300 when the temperature information is lower than the lower limit mold temperature Although the flow of the cooling water is stopped, the process of comparing the temperature information re-received through the cooling water temperature detection unit 200 with the lower mold temperature after the elapse of the time is repeated.
  • the main controller 600 may be replaced by a built-in controller or a hot runner controller of the injection molding machine in which the internal electronic circuit configuration is changed.
  • the hot water supply module 120 is characterized in that it can be replaced by the coolant of 45 to 65 °C flowing out from the water exit side of the oil cooler provided in conjunction with the injection molding machine for injecting the mold.
  • the present invention increases the rate of change of the temperature of the cooling water by using cold water and hot water at the same time instead of configuring the cooling water (cooling fluid) only with cold water, and precisely controlling the flow rate of the cold and hot water by the valve means provided on the cold water and hot water supply sides, respectively. There is an effect that can efficiently proceed the cooling process accompanying the process.
  • the cooling process is smoothly performed regardless of the combination of the cooling water (single cold water and cold and hot water), and the cooling water (water used) flowing out of the oil cooler of the injection molding machine in addition to the separate water heater is used, and the temperature of the mold is maintained.
  • the sensing means can be selected and used among the temperature sensor of the mold and the temperature sensor constituting the present invention
  • the function of the main controller of the present invention can be replaced by an internal controller of the injection molding machine or a controller for a hot runner. There is an effect that can significantly reduce the management cost of the equipment.
  • FIG. 1 is a block diagram showing the configuration of a cooling water control system of an injection molding machine of the present invention.
  • 2 to 8 is a flow chart showing a cooling water control process according to the cooling water control system of the injection molding machine of the present invention.
  • cooling water supply unit 110 cold water supply module
  • supply manifold 200 cooling water temperature detection unit
  • 300 return valve means 300a: cold water return valve
  • Cooling fluid determination step S200 Coolant temperature measurement step
  • the present invention is to control the cooling temperature of the cooling circuit (cooling flow path) provided in the mold in order to control the mold temperature of the injection molding machine according to the shape and material properties of the mold to control the cooling water to improve the precision and speed of the cooling function
  • the present invention relates to a system in which the configuration of cooling water (cooling fluid) does not consist of cold water alone, but the use of cold water and hot water in parallel increases the rate of change of the temperature of the cooling water, and controls the flow rate of the cold water and hot water valves (solenoid valve, proportional control valve, etc.)
  • the main focus is to enable efficient control of the cooling process accompanying the injection process by precise control.
  • the cooling process can be carried out smoothly, and in using hot water, the water heater constituting the system of the present invention or provided in the injection molding machine itself. It is characterized in that it is configured to reduce the management cost of the equipment by using the fluid (cooling water of the used injection molding machine oil cooler) from the oil cooler.
  • a means for detecting the temperature of the mold may be detected by the temperature sensing means provided in the present invention, and configured to recognize the temperature through the mold temperature sensor attached to the pre-designed mold itself of the equipment It will be configured to expand the operational choices.
  • the built-in controller proposed in the present invention includes a main controller, a monitor, an operation panel, and the like, and should not be limited to the same concept as a conventional control box.
  • FIG. 1 is a block diagram showing the overall configuration of the present invention, in which cold water and hot water are combined in different ratios in a plurality of cooling passages CL passing through a mold divided into an upper plate mold 1 and a lower plate mold 2. It is made to control the temperature of the mold by supplying the cooling water, the cold water supply module 110 including the cold water tank 111 and the cooler 112, hot water including the hot water tank 121 and the water heater 122
  • Cooling water supply unit 100 consisting of a supply module 120, and a supply valve means 130 for adjusting the mixing ratio of cold water and hot water for each cooling flow path (CL); and a water outlet provided on the outlet (OUT) side of the cooling flow path
  • Cooling water temperature detection unit 200 for detecting the temperature information through a temperature sensor or a mold temperature sensor attached to the mold; and a return valve for distinguishing the cold water and hot water to the cooling water supply unit by comparing the temperature information with the set cold and hot water determination temperature Means (300);
  • a display unit 400 which displays the opening and
  • the cooling water supply unit 100 supplies a cooling fluid divided into cold water and hot water into a cooling flow path (cooling circuit) formed in a mold, and has an additional means for adjusting a mixing ratio of cold water and hot water.
  • the cold water supply module 110 is composed of a cold water tank 111 that is a space for storing cold water, and a cooler 112 for rapidly cooling cold water of the cold water tank 111.
  • the hot water supply module 120 is composed of a hot water tank 121 is stored hot water, and a water heater 122 for rapidly heating the hot water of the hot water tank 121.
  • the cold water tank 111 and the hot water tank 121 is provided with a cold water tank valve 113 and hot water tank valve 123, respectively.
  • a supply valve means 130 connected to each cooling channel CL is provided to adjust a mixing ratio of cold water and hot water supplied from the cold water supply module 110 and the hot water supply module 120.
  • the supply valve means 130 is configured such that the cold water supply valve 130a and the hot water supply valve 130b are configured for each cooling flow path CL, and include a supply manifold 131 for separately accommodating cold water and hot water. Done.
  • the supply manifold 131 primarily stores the cold water and the hot water separately and adjusts the opening / closing operation of the supply valve means 130 to provide an appropriate amount of cold water or hot water through the inlet IN of the cooling flow path CL.
  • the inside is composed of a double partition structure to be supplied to the mold.
  • the hot water supply module 120 may be configured to supply hot water using the cooling water in the high temperature state of 45 to 65 °C flowing out from the outlet side of the oil cooler provided in connection with the injection molding machine instead of the water heater 122. .
  • the cooling water temperature detecting unit 200 is a measuring means for detecting the current temperature of the mold, and is disposed at the rear end of the water outlet port of the cooling flow path CL formed in the upper plate mold 1 and the lower plate mold 2 of the mold. It will include an outlet temperature sensor.
  • the outlet temperature sensor is configured to be equal to the number of cooling passages (CL) formed by a plurality. Meanwhile, the temperature information may be used by acquiring temperature information of a mold temperature sensor attached to a conventional mold and transmitting the temperature information to the main controller 600 without using the water outlet temperature sensor.
  • the return valve means 300 is a component for performing a cooling process through the cooling flow path (CL) and returning back to the cold water tank 111 and the hot water tank 121, the cold water return valve 300a and the hot water return valve Recirculation 300b is configured to be configured for each cooling flow path CL, and similarly to the supply valve means 130, the return water is composed of a double partition wall for distinguishing cold water and hot water introduced by the opening and closing operation of the return valve means 300. It is composed of a manifold 310.
  • the display unit 400 is configured as a display device to display the temperature information of the cooling water divided by the cooling flow path CL and the information such as the opening and closing degree of the supply valve means 130.
  • the operation unit 500 is a keyboard, a mouse, and the like as a means for setting the upper and lower mold temperatures for presenting a standard for controlling the temperature of the mold for each of the cold / hot water crystal temperature and the cooling flow path, and inputting commands for power supply and operation. It may be configured as.
  • the main controller 600 controls all the above components, the configuration method of the main controller 600 may be variously made. More specifically, the main controller 600 may be configured to be used by updating the firmware of the microprocessor provided in the controller built in the injection molding machine or the controller for the hot runner. For example, in the case of using the controller built in the injection molding machine, since the temperature measuring means and the time measuring means are basically provided inside the controller, the same function as the main controller 600 is made by modifying the internal electronic circuit in the controller. In the case of using a hot runner controller, a separate time measurement unit may be coupled to the controller, and then the function of the main controller 600 may be satisfied by changing the design of the internal electronic circuit. will be.
  • the main controller 600 in the present invention includes the configuration to change the mold temperature by repeatedly performing the supply, cut off of cold water or hot water for a time set by the user through a timer and a sensor installed for each cooling passage. Can be.
  • the cooling control process by the cooling water control system comprises a cooling fluid determination step (S100) to set the flow path of the cooling water supply unit 100 by the cooling water control mode divided into a cold and hot water mode and a single cold water mode; and the outlet Cooling water temperature measuring step (S200) for receiving the temperature information of the temperature sensor or the mold temperature sensor; Coolant temperature determining step (S300) for calculating the temperature control deviation that is the difference between the received temperature information and the upper and lower mold temperature ; And, determining the mixing ratio of cold and hot water for each cooling flow path (CL) according to the temperature control deviation (S400); and, by adjusting the opening and closing degree of the supply valve means 130 according to the mixing ratio and the cold water and Cold and hot water valve opening and closing step (S500) to increase or decrease the amount of hot water for each cooling oil; and, Cooling step (S600) for supplying the increased and cooled water to each cooling flow path to proceed with the cooling process; Cooling water recovery step of recovering the coolant to the cold water tank 111 or
  • the data storage step (S800) for storing the upper and lower mold temperature and the opening and closing degree of the supply and return valve means (130, 300) for each process time period; to perform further after the last repeated cooling water return step (S700) It may be configured.
  • the cooling fluid determination step (S100) is a preparation step for determining the configuration of cold water and hot water, which is a cooling fluid (cooling water), and divided into a cold and cold water mode using both cold and hot water and a single cold water mode using only cold water. Regardless of site conditions, the cooling process will be smooth.
  • cold water it is possible to use the general cold water supplied directly from the cold water tank 111 or to use the cold water cooled rapidly through a separate cooler 112 to diversify the selection of cold water source
  • hot water it is possible to use hot water supplied through the water heater 122 or to use a high-temperature cooling water flowing out from the water exit side of the oil cooler provided in the injection molding machine itself so as to expand the selection of the hot water source. do.
  • the cooling water temperature measuring step (S200) reflects the need for different temperature setting for each internal cavity region of the mold to directly measure the temperature at the rear end of the outlet port of each cooling flow path CL, or is attached to a mold temperature sensor. It is configured to receive a measurement temperature of the temperature measurement operation can be performed.
  • the temperature information obtained by the main controller 600 is compared with the upper and lower mold temperatures set for each cooling channel CL to calculate a temperature control deviation, thereby cooling the corresponding cooling channel CL.
  • This is the configuration step to grasp the status.
  • the temperature control deviation corresponds to the upper and lower mold temperatures minus the temperature information.
  • the cold / hot water composition ratio determining step (S400) is a configuration step of setting the mixing ratio of cold and hot water for each cooling channel (CL) according to the temperature control deviation by the main controller 600, based on the temperature control deviation of the cold water and hot water
  • the signal generated by calculating the flow rate as a percentage (%) is transmitted to the supply valve means 130 of the cooling water supply unit 100 is configured to adjust the cold and hot water flow rate.
  • the cold / hot water valve opening / closing adjusting step (S500) is a configuration step of actually controlling the cold / hot water flow rate, and adjusting the opening and closing degree of each valve through the cold water supply valve 130a and the hot water supply valve 130b of the supply valve means 130. By controlling the cold and hot water flowing into the inlet (IN) side of the cooling passage (CL).
  • the cooling step (S600) is a configuration step in which the cold and hot water supplied by the supply valve means 130 is supplied to the upper plate mold (1) and the lower plate mold (2) through the cooling flow path (CL) to perform the cooling.
  • the cooling water return step (S700) is to measure the temperature information after the use of the cooling water used in the cooling process through the cooling water temperature detection unit 200 to re-introduce the cooling water into the cold water tank 111 or the hot water tank 121. When the temperature information is higher than the cold / hot water crystal temperature, the cooling water is returned to the hot water tank 121, and when the temperature information is low, the cooling water is returned to the cold water tank 111.
  • the present cooling water return step (S700) is the completion of the injection process process to repeat the steps (S300 to S600) and the present step (S700) and whether the current coolant control mode is cold or hot water mode or a single cold water mode. It will include additional processes to verify.
  • the data storage step (S800) is a means for more efficiently configuring the cooling water control process of the injection molding, after the injection molding is completed by the steps (S100 to S700) injection process by the main controller 600
  • the coolant temperature control data recorded for each time slot is stored and managed, and the coolant temperature control data is displayed through the display unit 400 during the injection process for the same injection mold.
  • the main controller 600 controls the coolant supply unit 100, the coolant temperature detection unit 200, the return valve means 300, and the display unit 400 based on the coolant temperature control data. It can be configured to control the flow automatically.
  • the coolant temperature control data includes the upper and lower mold temperature and the opening and closing degree information of the supply valve means 130 and the return valve means 300, but means all the data that was used in the cooling water control of all injection molding Rather, it refers to the data that was used in the cooling water control process of the injection products that were determined to be good by the quality test.
  • the selected and stored cooling water temperature control data includes upper and lower mold temperature as main data, and includes opening and closing degree information of the supply valve means 130 and the return valve means 300 associated therewith.
  • the user searches the cooling water temperature control data belonging to the mold model through the operation unit 500 before the cooling fluid determination step (S100) and the main control module ( After setting the cooling water temperature control data in step 600), the cooling water control process may be automatically controlled according to the upper and lower mold temperatures of the cooling water temperature control data and the opening and closing degree information of the supply valve means 130 and the return valve means 300. It becomes possible.
  • the data storage step (S800) enables the automatic control of the cooling water control process of the injection molding for the same injection product, thereby manually setting the upper and lower mold temperatures of the work input accompanying the mold temperature control process of the injection process, and It is possible to block the process hassle caused by the manual operation of the injection molding equipment (including various valves) accordingly has the effect of significantly increasing the work productivity of injection molding.
  • the supply valve means 130 and the return valve means 300 are blocked without performing the next step and set by the user. It may be configured to stop the flow of coolant for a time.
  • the supply valve means 130 and the return valve means 300 are blocked without performing the next step, and then set by the user.
  • the flow of the cooling water is stopped for a time calculated in proportion to the temperature control deviation corresponding to the difference between the temperature information and the lower limit mold temperature, and the process of comparing the temperature information with the lower limit mold temperature again after the time elapses. It may be.
  • the user approaches the operation unit 500 and enters the coolant control mode (S110).
  • the cooling water control mode is set to select one of the single cold water mode or cold and hot water mode as described above.
  • the cooling water control mode input by the step (S110) is to make the basic settings for the actual cold water and hot water supply source, a more specific cooling water (cooling fluid) setting process configuration is as shown in Figs.
  • FIG. 3 it is determined whether a cooler (refrigerant means) exists (S120). If it is confirmed by the step (S120) that the cooler 112 is present to open the line connected to the cold water tank 111 on the cooler 112 side (S121).
  • the cooler 112 does not exist in the step (S120) is to use the common cold water without going through a separate rapid refrigerant device (S122).
  • the cold water tank valve 113 is opened to prepare the cold water to be used (S123).
  • the current coolant control mode is the cold / hot water mode (S124).
  • step S124 If it is determined in step S124 that the cooling water control mode is not the cold / hot water mode, it means that the current cooling water control mode is a single cold water mode, and thus the setting for the hot water supply described below will be omitted.
  • the current coolant control mode is the cold and hot water mode, it is checked whether the water heater 122 is provided in the current system as shown in FIG. 4 (S125). If it is confirmed that the water heater 122 is provided by the step (S125) it is to open the line connected to the hot water tank 121 at the water heater 122 (S126).
  • the hot water tank valve 123 is opened in the state where the hot water heating means (water heater or oil cooler) is determined by the steps S126 and S127, so that the hot water supply source is set (S128).
  • the temperature for each cooling flow path CL formed in correspondence with the cavity side of the upper plate mold 1 and the lower plate mold 2 is substantially changed. It is configured to measure and control the temperature of the mold.
  • a mold temperature sensor (not shown) attached to the mold itself (S210).
  • the main controller 600 transmits a signal requesting the mold temperature information to the mold temperature sensor, and the mold temperature sensor measures the mold temperature at the corresponding location. (S220).
  • the mold temperature sensor is not used by the step (S210) to measure the temperature of the cooling water returned through the outlet temperature sensor provided on the outlet (OUT) side of the cooling flow path (CL) (S230) .
  • the corresponding temperature information is transmitted to the main controller 600 is prepared to be used to determine the coolant temperature described below (S240).
  • the current cooling angle control mode is a cold or hot water mode (S250)
  • it is configured to perform the cooling control divided into a single cold water mode and cold and hot water mode.
  • this step by comparing the temperature information measured by the temperature measuring means (outlet temperature sensor or the mold temperature sensor) and the above-mentioned upper and lower mold temperatures, it is determined whether the current cooling function is maintained at an appropriate level.
  • step (S310) is to determine whether the overheat state, and if the temperature information is determined to exceed the upper limit mold temperature, the value obtained by subtracting the temperature information from the upper limit mold temperature is stored as a temperature control deviation (S320).
  • the temperature control deviation value calculated by the step (S320) is 'negative' is used to increase the flow rate of cold water in the cold and hot water mixing ratio determination step (S400) to be described below.
  • step S330 the temperature information is lower than the lower limit mold temperature
  • the step (S330) is to determine whether the supercooled state, and if it is recognized that the temperature information is reduced to less than the lower limit mold temperature, the value obtained by subtracting the temperature information from the lower limit mold temperature is stored as a temperature control deviation (S340).
  • the temperature control deviation value calculated by the step (S330) is 'positive' is used to increase the flow rate of hot water in the cold and hot water mixing ratio determination step (S400) described below.
  • the step (S330) is to determine whether the supercooled state, and if it is recognized that the temperature information is reduced to less than the lower limit mold temperature, the value obtained by subtracting the temperature information from the lower limit mold temperature is stored as a temperature control deviation (S340).
  • the temperature control deviation value calculated by the step (S330) is 'positive' is used to increase the flow rate of hot water in the cold and hot water mixing ratio determination step (S400) described below.
  • the current temperature information value exists within the range of the upper and lower limit mold temperature, so that it is not necessary to adjust the flow rate of
  • the cooling process may not be performed for a predetermined time (first delay time). For example, it is checked whether or not the delay process is performed according to the first delay time (S350). If it is determined that the first delay time is not used in the step (S350), it is directly to the cooling step (S600) without performing a separate cold and hot water flow rate adjustment (cold and hot water mixing ratio determination step and cold and hot water valve opening and closing step to be described later). It is configured to continue the cooling process by the cooling water to enter the same ratio of cold and hot water.
  • first delay time For example, it is checked whether or not the delay process is performed according to the first delay time (S350). If it is determined that the first delay time is not used in the step (S350), it is directly to the cooling step (S600) without performing a separate cold and hot water flow rate adjustment (cold and hot water mixing ratio determination step and cold and hot water valve opening and closing step to be described later). It is configured to continue the cooling process by the cooling water to enter the same ratio of cold and hot water.
  • step S350 first, the supply valve means 130, which is divided into the cold water supply valve 130a and the hot water supply valve 130b, is blocked (S351). Then, the cold water return valve 300a and the hot water return valve 300b are separated into the return valve means 300 (S352).
  • step S351 and S352 the standby process is performed for the first delay time in a state in which the flow of the cooling water is stopped (S360).
  • the first delay time is set by the user through the operation unit 500, and the main controller 600 is configured to apply this to the delay process. After having the waiting time by the step (S360), and enters the cooling step (S600).
  • step (S370) it is checked whether the current temperature information exceeds the upper limit mold temperature (S370).
  • the value obtained by subtracting the temperature information from the upper limit mold temperature is stored in the temperature control deviation (S371).
  • step S370 it is checked whether the temperature information is lower than the lower limit mold temperature (S372). If it is determined by the step (S372) that the current temperature information is less than the lower limit mold temperature, it means that the supercooled state is configured to temporarily stop the circulation of cold water.
  • step S374 and S375 a delay process is performed for a second delay time in a state in which the coolant flow is stopped (S376).
  • the second delay time may be set by the user or calculated in proportion to the temperature control deviation. In other words, if the temperature control deviation is large, the second delay time is long, and if it is small, the second delay time is short.
  • the temperature process is again compared to the lower limit mold temperature by the step S372, and when the temperature information is still lower than the lower limit mold temperature, the same process is repeated. If the mold temperature is higher than the lower limit mold temperature, it means that the current temperature information satisfies the upper and lower mold temperature ranges.
  • the cooling step S600
  • the delay process is to supply cold water Shut off the valve and the cold water return valve (S378-1, S378-2).
  • the waiting time for the first delay time is passed while the flow of cold water is stopped (S379). After the delay through the step S379, it enters the cooling step (S600).
  • This step is a configuration step of adjusting the flow rate of cold water and hot water based on the temperature control deviation calculated in the cooling water temperature determination step (S300).
  • This step is a configuration step of adjusting the opening and closing degree of the cold water supply valve 130a and the hot water supply valve 130b of the actual supply valve means 130.
  • the opening rate of the cold water supply valve 130a is increased in the state where the cold / hot water flow rate is determined by the step S410, and accordingly the opening rate of the hot water supply valve 130b is reduced. (S510).
  • the cooling water whose flow rate is controlled is introduced into the inlet (IN) of the cooling flow path (CL) to cool the upper plate mold (1) and the lower plate mold (2) and then the outlet port (OUT). By letting it out, the cooling process of the mold is performed.
  • This step consists of performing the cooling step (S600) and returning the cooling water flowing into the return valve means 300 to the cold water tank 111 or hot water tank 121.
  • the main controller 600 transmits a signal requesting the mold temperature information to the mold temperature sensor, and the mold temperature sensor measures the mold temperature at the corresponding location. (S711). On the other hand, if it is determined by the step (S711) that the mold temperature sensor is not used to measure the temperature of the cooling water returned through the outlet temperature sensor provided on the outlet (OUT) side of the cooling flow path (CL) (S712) .
  • the corresponding temperature information is transmitted to the main controller 600 to return the cooling water to the cold water tank 111 or the hot water tank 121 based on the temperature information of the cooling water. It is prepared to be (S713).
  • it is determined whether the current coolant control mode is cold or hot water mode (S714). If it is determined in step S714 that the current coolant control mode is not the cold / hot water mode (in the case of the single cold water mode), the cold water return valve 311 is immediately opened (S715).
  • step S714 if it is determined in step S714 that the current coolant control mode is the cold / hot water mode, it is checked whether the current temperature information is higher than the cold / hot water determination temperature (S720). When it is determined by the step S720 that the current temperature information exceeds the cold / hot water determination temperature, the cold water return valve 300a is blocked and the hot water return valve 300b is opened (S721). On the other hand, if it is determined by the step (S720) that the temperature information is lower than the cold and hot water determination temperature, the cold water return valve 300a is opened and the hot water return valve 300b is blocked (S722).
  • This step can be used to record the coolant temperature control data generated in the cooling process proceeded in accordance with the configuration step (S100 to S700) as shown in Figure 2 and 8 and subsequently applied to the cooling process for the same injection mold product as it is. This eliminates the need for a separate process setting for cooling water control, thereby increasing the operational efficiency of the system.
  • the main controller 600 includes the coolant temperature control data including the upper and lower mold temperatures generated in the cooling water control process and the opening and closing degrees of the supply and return valve means (130, 300). It is stored in the external storage medium associated with (S830).
  • the present invention can provide elasticity to the operational aspects of the equipment, including a cooling control process divided into a single cold water mode and a cold and hot water mode to achieve the same cooling function regardless of the type of cooling fluid (cold water, cold and hot water),
  • the cooling control function includes a flow control means and a temperature sensing means of the cooling fluid corresponding to each cooling circuit (cooling flow path).
  • it is possible to significantly reduce the management cost of the equipment by replacing the control system that controls the entire system with the built-in controller of the injection molding machine or the controller for the hot runner. Applied on site, the productivity of injection process can be improved to a remarkable level. It is determined to be.

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

Abstract

La présente invention se rapporte à un système de réglage d'eau de refroidissement réglant une température d'un moule utilisant un fluide frigorigène mélangé avec de l'eau froide et de l'eau chaude. Le système de réglage d'eau de refroidissement comprend : une unité d'apport d'eau de refroidissement (100) ; une unité de détection de température d'eau de refroidissement (200) ; un moyen soupape d'échange d'eau (300) ; une unité d'affichage (400) ; une unité de mise en oeuvre (500) ; et un dispositif de commande principal (600). L'unité d'apport d'eau de refroidissement (100) comprend : un module d'apport d'eau froide (110) comprenant un réservoir d'eau froide (111) et un dispositif de refroidissement (112) ; un module d'apport d'eau chaude (120) comprenant réservoir d'eau chaude (121) et un dispositif de chauffage d'eau (122) ; et un moyen soupape d'apport (130) pour le réglage d'un rapport de mélange d'eau froide et d'eau chaude pour chaque trajet de circulation d'eau de refroidissement (CL). L'unité de détection de température d'eau de refroidissement (200) détecte des informations de température grâce à une sonde de température d'orifice d'évacuation d'eau disposée sur un orifice d'évacuation d'eau (OUT) du trajet de circulation d'eau de refroidissement ou à une sonde de température de moule fixée au moule. Le moyen soupape d'échange d'eau (300) sert à échanger séparément de l'eau froide et de l'eau chaude dans l'unité d'apport d'eau de refroidissement par comparaison des informations de température avec une température de détermination d'eau froide/chaude préréglée. L'unité d'affichage (400) sert à afficher les informations de température et le degré d'ouverture et de fermeture du moyen soupape d'apport (130). L'unité de mise en oeuvre (500) règle une température de moule maximale/minimale afin de régler séparément la température du moule pour chacun de la température de détermination d'eau froide/chaude et du trajet de circulation d'eau de refroidissement et saisit des instructions concernant l'alimentation électrique et les opérations. Le dispositif de commande principal (600) commande l'unité d'apport d'eau de refroidissement, l'unité de détection de température d'eau de refroidissement, l'unité soupape d'échange d'eau et l'unité d'affichage et ajuste le degré d'ouverture et de fermeture du moyen soupape d'apport par comparaison des informations de température avec une température de moule maximale/minimale.
PCT/KR2014/003956 2013-05-06 2014-05-03 Systeme pour eau de refroidissement d'appareil de moulage par injection WO2014182021A1 (fr)

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KR1020130050703A KR101376934B1 (ko) 2013-05-06 2013-05-06 사출성형기의 냉각수제어시스템

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Cited By (5)

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FR3060433A1 (fr) * 2016-12-21 2018-06-22 A2P Industrie Installation de refroidissement de moules
CN110429299A (zh) * 2019-08-09 2019-11-08 上海电气集团股份有限公司 液流电池的电解液温度的控制方法及系统
CN111070610A (zh) * 2020-01-02 2020-04-28 华域视觉科技(上海)有限公司 厚壁零件成型控制系统及方法
CN113601806A (zh) * 2021-06-29 2021-11-05 无锡有孚精工科技有限公司 一种模具生产用气液冷却装置、系统及方法
CN117400502A (zh) * 2023-10-31 2024-01-16 山东佳邦机械设备有限公司 一种注塑机节能控制系统及控制方法

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KR102057416B1 (ko) 2019-06-12 2019-12-18 윤충희 사출 성형 장치
CN112590109A (zh) * 2020-11-12 2021-04-02 何艳 一种建筑模版的注塑方法

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JP2009137075A (ja) * 2007-12-04 2009-06-25 Autonetworks Technologies Ltd 射出成形方法及び金型温度調節装置
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JP2009137075A (ja) * 2007-12-04 2009-06-25 Autonetworks Technologies Ltd 射出成形方法及び金型温度調節装置
KR20110139384A (ko) * 2010-06-23 2011-12-29 (주) 민성정밀 금형 온도 제어장치 및 온도 제어방법
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3060433A1 (fr) * 2016-12-21 2018-06-22 A2P Industrie Installation de refroidissement de moules
CN110429299A (zh) * 2019-08-09 2019-11-08 上海电气集团股份有限公司 液流电池的电解液温度的控制方法及系统
CN111070610A (zh) * 2020-01-02 2020-04-28 华域视觉科技(上海)有限公司 厚壁零件成型控制系统及方法
CN113601806A (zh) * 2021-06-29 2021-11-05 无锡有孚精工科技有限公司 一种模具生产用气液冷却装置、系统及方法
CN117400502A (zh) * 2023-10-31 2024-01-16 山东佳邦机械设备有限公司 一种注塑机节能控制系统及控制方法

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