KR102422167B1 - Apparatus for controlling injection molding machine and operating method for saving power of the same - Google Patents

Abstract

The present application relates to an integrated operation control apparatus for a plurality of injection molding machines and a power-saving operation method using the same, and the power-saving operation method of the integrated operation control apparatus according to an embodiment of the present invention includes driving information and a driving step of setting operating conditions using power consumption information and driving the plurality of injection molding machines according to the operating conditions; a request receiving step of receiving an additional request signal for adding a driven injection molding machine or a stop request signal for stopping the operation of some injection molding machines while driving the plurality of injection molding machines; a resetting step of resetting operating conditions of the injection molding machines by using the driving information and power consumption information of the added or stopped injection molding machines; and an operation control step of transmitting a control signal to the plurality of injection molding machines according to the reset operation conditions.

Description

An integrated operation control apparatus for a plurality of injection molding machines and a power saving operation method using the same {Apparatus for controlling injection molding machine and operating method for saving power of the same}

The present application relates to an integrated operation control device for a plurality of injection molding machines capable of resetting operating conditions when adding or stopping some injection molding machines to a plurality of injection molding machines in operation, and a power-saving operation method using the same.

The injection molding machine is an apparatus capable of obtaining a molded article by injecting a resin heated and molten in a heating cylinder into the cavity space of a mold apparatus at high pressure and then cooling and solidifying it in the cavity space. To this end, the injection molding machine is provided with a clamping device and an injection device, the clamping device is provided with a fixed template and a movable template, and the clamping cylinder moves the movable template back and forth to perform mold closing, mold opening, etc. . The injection device includes a heating cylinder for heating and melting the resin supplied from the hopper and an injection nozzle for injecting the molten resin, and is installed in the heating cylinder so that the screw can rotate freely and move forward and backward freely. And the resin can be metered by advancing the screw and injecting the resin by the injection nozzle and retracting the screw.

However, there may be cases where a plurality of injection molding machines are operated in one factory, and when a plurality of injection molding machines are operated at the same time, the power consumption of each injection molding machine overlaps and the peak power in the entire factory may be set high. have. That is, in response to high peak power, it is necessary to proceed with investment in facilities such as power facilities, and there are problems such as an increase in the burden of power charges. Furthermore, when some injection molding machines are added or the operation of some injection molding machines is stopped during operation of a plurality of injection molding machines, there is a problem that the peak power consumption of the injection molding machine increases or some injection molding machines operate inefficiently. do.

An object of the present application is to provide an integrated operation control device for a plurality of injection molding machines capable of resetting operating conditions when adding or stopping some injection molding machines to a plurality of injection molding machines in operation, and a power-saving operation method using the same.

An object of the present application is to provide an integrated operation control apparatus for a plurality of injection molding machines that can efficiently operate by controlling each operating condition according to the power consumption patterns of the plurality of injection molding machines, and a power-saving operation method using the same.

In a power saving operation method of an integrated operation control device according to an embodiment of the present invention, operating conditions are set using driving information and power consumption information of a plurality of injection molding machines, and the plurality of injection molding machines are operated according to the operating conditions. a driving step of driving; a request receiving step of receiving an additional request signal for adding a driven injection molding machine or a stop request signal for stopping the operation of some injection molding machines while driving the plurality of injection molding machines; a resetting step of resetting operating conditions of the injection molding machines by using the driving information and power consumption information of the added or stopped injection molding machines; and an operation control step of transmitting a control signal to the plurality of injection molding machines according to the reset operation conditions.

Here, the driving information includes identification information of the injection molding machine and a start time for each process, and the power consumption information includes an amount of power consumed by each process required for driving the injection molding machine or consumption by time required for driving the injection molding machine. It may include a power consumption pattern indicating the amount of power.

Here, in the resetting step, when the additional request signal is received, the peak power of the total power consumption required for driving the injection molding machines is minimized by using the driving information and power consumption information of the injection molding machine included in the additional request signal. operating conditions can be reset.

Here, the resetting step calculates the peak power of the total power consumed when the delay time is applied to the start time for each process of the added injection molding machines, and derives the delay time to minimize the peak power, It can be reset to operating conditions.

Here, in the resetting step, the overlapping power consumption pattern is generated by overlapping the power consumption pattern of the added second injection molding machines on the first integrated power consumption pattern formed by overlapping the power consumption of the first injection molding machines being driven. step; Adjusting the time axis position of the power consumption patterns of the second injection molding machines to minimize the magnitude of the peak power included in the overlapping power consumption pattern, and setting the minimized overlapping power consumption pattern as a second integrated power consumption pattern. ; and setting a reference point of time of the second injection molding machines using the second integrated power consumption pattern, and resetting the operating conditions so that the processes of the second injection molding machines are sequentially performed from the reference point. have.

Here, in the resetting step, when the stop request signal is received, the peak power of the total power consumption required for driving the injection molding machines is minimized by using the driving information and power consumption information of the injection molding machine included in the stop request signal. operating conditions can be reset.

Here, the resetting step calculates the peak power of the total power consumed when the delay time is applied to the start time for each process of the remaining injection molding machines except for the stopped injection molding machines, and the delay time for minimizing the peak power can be derived and reset to the operating conditions.

Here, the resetting step may include generating an overlapping power consumption pattern by overlapping the power consumption of the remaining injection molding machines except for the stopped injection molding machines; adjusting the time axis position of the power consumption pattern to minimize the magnitude of the peak power included in the overlapping power consumption pattern, and setting the minimized overlapping power consumption pattern as an integrated power consumption pattern; and setting a reference time point of the remaining injection molding machines using the integrated power consumption pattern, and resetting the operating conditions so that the processes of the remaining injection molding machines are sequentially performed from the reference time point.

The integrated operation control apparatus according to an embodiment of the present invention receives, from a plurality of injection molding machines, a driving request signal including driving information of the injection molding machines, and receives power consumption information required for driving the injection molding machines. communication department; By using the driving information and the power consumption information, an operating condition for minimizing the peak power of the total power consumed when driving the plurality of injection molding machines is set, and the operating condition is transmitted to the plurality of injection molding machines through the communication unit. a control unit to transmit; and a display unit for displaying an operation status including power consumption of the plurality of injection molding machines and an operation status including a process in which the injection molding machines are in progress, wherein the control unit is an additional request for adding an injection molding machine while the plurality of injection molding machines are being driven When a signal or a stop request signal for stopping the operation of some injection molding machines is received, operating conditions of the injection molding machines may be reset in response to the additional request signal or the stop request signal.

Here, the driving information includes identification information of the injection molding machine and a start time for each process, and the power consumption information includes an amount of power consumed by each process required for driving the injection molding machine or consumption by time required for driving the injection molding machine. It may include a power consumption pattern indicating the amount of power.

Here, when the additional request signal is received, the control unit uses the driving information and power consumption information of the injection molding machine included in the additional request signal, and the total consumption required for driving all injection molding machines including the added injection molding machine. It is possible to reset the operating conditions that minimize the peak power of the power.

Here, the control unit calculates the peak power of the total power consumed when the delay time is applied to the start time for each process of the added injection molding machines, and derives the delay time to minimize the peak power, conditions can be reset.

Here, the control unit generates an overlapping power consumption pattern by superimposing the power consumption pattern of the added second injection molding machines on the first integrated power consumption pattern formed by overlapping the power consumption of the first injection molding machines being driven, Adjusting the time axis position of the power consumption pattern of the second injection molding machines to minimize the magnitude of the peak power included in the overlapping power consumption pattern, and setting the minimized overlapping power consumption pattern as a second integrated power consumption pattern, A reference time point of the second injection molding machines may be set using the second integrated power consumption pattern, and the operating conditions may be reset so that the processes of the second injection molding machines are sequentially performed from the reference time point.

Here, when the stop request signal is received, the control unit uses the driving information and power consumption information of the injection molding machine included in the stop request signal, and the total consumption required for driving the remaining injection molding machines except for the stopped injection molding machine. It is possible to reset the operating conditions that minimize the peak power of the power.

Here, the control unit calculates the peak power of the total power consumed when the delay time is applied to the start time for each process of the remaining injection molding machines except for the stopped injection molding machines, and calculates the delay time for minimizing the peak power. It can be derived and reset to the above operating conditions.

Here, the control unit generates an overlapping power consumption pattern by overlapping the power consumption of the remaining injection molding machines except for the stopped injection molding machines, and adjusts a time axis position of the power consumption pattern to adjust the peak power included in the overlapping power consumption pattern. to minimize the size of , set the minimized overlapping power consumption pattern as an integrated power consumption pattern, set a reference time point of the remaining injection molding machines using the integrated power consumption pattern, The operating conditions may be reset so that the process is sequentially performed.

Incidentally, the means for solving the above problems do not enumerate all the features of the present invention. Various features of the present invention and its advantages and effects may be understood in more detail with reference to the following specific embodiments.

According to the integrated operation control apparatus for a plurality of injection molding machines and the power-saving operation method using the same according to an embodiment of the present invention, it is possible to reset operating conditions when adding or stopping some injection molding machines to a plurality of injection molding machines in operation. Therefore, efficient operation is possible.

According to the integrated operation control apparatus for a plurality of injection molding machines and the power saving operation method using the same according to an embodiment of the present invention, it is possible to reduce the peak power of the entire factory when the plurality of injection molding machines are operated, so that the power installed in the factory Equipment costs and electricity bills can be reduced.

1 is a schematic diagram showing an integrated operation control system according to an embodiment of the present invention.
2 is a schematic diagram showing an injection molding machine and a power consumption pattern thereof according to an embodiment of the present invention.
3 is a graph showing superimposed power consumption patterns according to the operation of a plurality of injection molding machines.
4 is a block diagram illustrating an integrated operation control device according to an embodiment of the present invention.
5 is a timing diagram illustrating the operation of the integrated operation control device according to an embodiment of the present invention.
6 is a schematic diagram showing a driving request signal and a control signal according to an embodiment of the present invention.
7 is a flowchart illustrating a power saving operation method according to an embodiment of the present invention.
8 is a flowchart illustrating a power saving operation method according to another embodiment of the present invention.

Hereinafter, preferred embodiments will be described in detail so that those of ordinary skill in the art can easily practice the present invention with reference to the accompanying drawings. However, in describing a preferred embodiment of the present invention in detail, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, the same reference numerals are used throughout the drawings for parts having similar functions and functions.

In addition, throughout the specification, when a part is 'connected' with another part, it is not only 'directly connected' but also 'indirectly connected' with another element interposed therebetween. include In addition, 'including' a certain component means that other components may be further included, rather than excluding other components, unless otherwise stated.

1 is a schematic diagram showing an integrated operation control system according to an embodiment of the present invention.

Referring to FIG. 1 , the integrated operation control system according to an embodiment of the present invention may include a plurality of injection molding machines 1 , 2 , ... , N and an integrated operation control device 100 .

Hereinafter, an integrated operation control system according to an embodiment of the present invention will be described with reference to FIG. 1 .

Injection molding machines (1, 2, ... , N) are devices that produce products by injecting molten resin into a space in a mold device at high pressure and then cooling it. Here, the user can produce a product by having the injection molding machines 1, 2, ... , N alone, but as shown in FIG. 1, a plurality of injection molding machines 1, 2, . It is also possible to produce each product by providing .. , N).

Specifically, the injection molding machines 1, 2, ... , N may include a clamping unit 10 and an injection unit 20, as shown in FIG. 2(a), and the injection molding machine 1, 2, ... , N) represents a process cycle including the processes of Mold Close, Injection, Holding, Plasticzing, Cooling, Molding Open, and Ejection. It can be repeated sequentially to produce products. Here, in the mold closing process, the movable mold plate 11 is advanced to fasten the lower mold and the upper mold of the mold, and a necessary clamping force can be formed to prevent the mold from being opened by the injection force. Then, in the injection (holding) process, the molten resin can be injected into the space within the mold and maintained at a constant pressure. When the injection process is performed, the resin for the next injection can be melted through the plasticzing process, and in the cooling process, the molten resin can be cooled and solidified so that the product can be taken out from the mold without deformation. When the cooling process is completed, the mold can be opened through the Molding Open process, and the product can be removed from the mold through the Ejection process.

Here, the power consumed when the injection molding machine operates may be the same as the power consumption pattern shown in FIG. 2( b ). That is, in the case of an injection molding machine, high power consumption may occur instantaneously in the injection process, and then high power may be consumed for a certain period to melt the resin in the subsequent metering process. On the other hand, large power consumption may not occur in the cooling process.

As shown in Figure 1, when a plurality of injection molding machines (1, 2, ... , N) are provided in one factory, each injection molding machine is mold closing, injection, metering, The processes of cooling, mold opening, and ejection can be repeatedly performed. If the plurality of injection molding machines 1, 2, ..., N simultaneously perform the same process, as shown in FIG. The peak power of power consumption consumed in the factory may be set high. Therefore, when a plurality of injection molding machines (1, 2, ... , N) are provided and driven in a factory, there is a problem that equipment investment must be carried out in consideration of the power equipment corresponding to the peak power generated during overlapping. do.

However, since the plurality of injection molding machines (1, 2, ..., N) do not have to perform the same process at the same time, the plurality of injection molding machines (1, 2, ..., N) all perform the same process at the same time In this case, it may be a waste of cost and equipment to provide power facilities in a factory. In addition, since the power rate can be determined in proportion to the peak power, which is the maximum value of the total power consumption used in the factory, it is necessary to distribute the power consumption by controlling the operation of the injection molding machines.

The integrated operation control device 100 may set the operating conditions of the plurality of injection molding machines 1, 2, ..., N, and may control the operation of each of the injection molding machines. Specifically, the integrated operation control device 100 controls at least some of the injection molding machines 1, 2, ..., N so that the processes performed are different, so that the peak power of the total power consumption used by all the injection molding machines is different. can lower In this case, since the power consumption of the plurality of injection molding machines 1, 2, ..., N is distributed as shown in FIG. 3(c), in the case of FIG. 3(b) to perform the same process at the same time Compared to that, the peak power can be reduced.

Meanwhile, referring to FIG. 4 , the integrated operation control apparatus 100 according to an embodiment of the present invention may include a communication unit 110 , a control unit 120 , and a display unit 130 .

The communication unit 110 may receive a driving request signal including driving information from the plurality of injection molding machines 1, 2, ..., N. The injection molding machines 1, 2, ... , N may transmit a driving request signal to the integrated operation control device 100 before starting product production, and the integrated operation control device 100 may be configured through the communication unit 110 . can receive it. Here, the driving information may include identification information, product information, and a start time for each process of a process cycle. According to an embodiment, a driving request signal having a format as shown in FIG. 6( a ) may be generated and transmitted to the driving request receiving unit 110 .

Identification information (ID) is for distinguishing an injection molding machine that transmits a drive request signal from other injection molding machines, and may be a number, letter, or symbol set corresponding to each injection molding machine. Accordingly, the integrated operation control apparatus 100 can distinguish the injection molding machine that has transmitted the corresponding drive request signal by using the identification information (ID).

Product Identification (PID) may be information on a product produced by a corresponding injection molding machine. Here, the types of products that the injection molding machine can produce may exist in various ways, and the start time of the process, the running time of the process, the power consumption within the process, etc. may be different depending on the type of each product. . Accordingly, the injection molding machine may provide product information to be produced to the integrated operation control device 100 by including product information in the driving request signal. The product information may be a number, letter, or symbol preset for each product.

The start times for each process (T1, T2, T3, ... , T6) may be information on the timing of starting each process when the injection molding machine produces a product corresponding to product information. Here, the start time for each process may be set as a time required from a preset reference time to the start time of each process. For example, the time taken from the reference point to the start of the mold closing process is set as the start time of the mold closing process, T1, and the time taken from the reference point to the start of the injection process is set as the start time of the injection process, T2, etc. You can set the start time value for each process in this way. Here, the reference time may be set as the start time of the mold closing process, and depending on the embodiment, it is also possible to set the injection molding machine to the time at which the control signal is received from the integrated operation control device 100 . On the other hand, depending on the embodiment, it is also possible to set the start time for each process by using the reference time and the progress time during which each process is performed. For example, T1, which is the start point of the mold closing process, is set as the reference time, and the time taken until the mold closing process is completed and the injection process starts is set to T2, the injection process start time, and the injection process is completed and the metering process starts. It is possible to set the start time value for each process in such a way that the time required for the measurement is set to T3, which is the starting point of the weighing process.

The communication unit 110 may receive power consumption information required when the injection molding machines 1, 2, ..., N are driven. Here, the power consumption information may be an amount of power consumed when the injection molding machine performs one process cycle (mold closing, injection, metering, cooling, mold opening, and ejection). In a factory equipped with a plurality of injection molding machines (1, 2, ..., N), a watt-hour meter for measuring the amount of power used by each injection molding machine may be included, and the communication unit 110 transmits a driving request signal to the injection molding machine. Power consumption information corresponding to the molding machine may be received from the watt-hour meter. Depending on the embodiment, it is also possible to receive power consumption information from each of the injection molding machines 1, 2, ..., N.

For example, upon receiving the driving request signal, the communication unit 110 may request power consumption information corresponding to the injection molding machine that has transmitted the driving request signal to the watt-hour meter, and the watt-hour meter consumes in response to the request of the communication unit 110 . Power information can be provided. Here, the power consumption transmitted by the watt-hour meter may be information on power consumption consumed when the injection molding machine produced a product in the past, and the watt-hour meter may include a watt-hour database that stores the power consumption of the injection molding machine measured by the watt-hour meter. The watt-hour database may be provided externally separately from the watt-hour meter. In this case, the communication unit 110 may receive power consumption from the watt-hour database instead of the watt-hour meter.

Meanwhile, in the watt-hour database, power consumption information measured by the watt-hour meter may be stored for each injection molding machine or each product. In addition, when there are a plurality of power consumption information measured for the same injection molding machine or the same product, the average value of each power consumption may be included in the power consumption information.

Furthermore, according to the embodiment, it is also possible to include the power amount database in the integrated operation control device (100). That is, the communication unit 110 may receive the measured value of power consumption from the watt-hour meter, and then store it in the watt-hour database inside the integrated operation control device 100 .

The controller 120 may set operating conditions for optimizing the total power consumption according to the operation of the plurality of injection molding machines 1, 2, ..., N by using the driving information and the power consumption information. Specifically, the control unit 120 may set the operating conditions to minimize the peak power of the total power consumed when the plurality of injection molding machines are simultaneously driven. In this case, the operating condition set by the controller 120 may be a delay time for each process start time of a process cycle performed by each injection molding machine. That is, as shown in FIG. 3(b), when a plurality of injection molding machines perform the same process at the same time, the peak power may be sharply increased. Accordingly, the controller 120 may set different delay times at the start times for each process of the plurality of injection molding machines so that the timings at which each process is performed are dispersed. In this case, as shown in Fig. 3(c), the peak power can be minimized because the same process is distributed without overlapping.

Depending on the embodiment, the control unit 120 may overlap the power consumption patterns of the respective injection molding machines, and may set the delay time so that the peak power included in the overlapped power consumption patterns is minimized. Here, the power consumption pattern may be a pattern indicating the amount of power consumed by time required for driving the injection molding machine. Accordingly, as shown in FIG. 3 , the control unit 120 may generate an overlapping power consumption pattern by overlapping a plurality of power consumption patterns, and move the power consumption patterns corresponding to each injection molding machine left and right along the time axis. Thus, the peak power of the overlapping power consumption pattern can be minimized. Here, since the power consumption pattern moves along the time axis according to the setting of the delay time, it is possible to set the delay time of each injection molding machine that minimizes the peak power. Meanwhile, assuming that the injection molding machines perform the same process at the same reference time point, the power consumption patterns may be overlapped, and then the delay time may be set by moving the power consumption patterns corresponding to each injection molding machine.

Here, the delay time set to move the power consumption pattern along the time axis may be set the same for all processes performed by one injection molding machine. For example, when the delay time is set to 2 seconds for any one injection molding machine, a delay time of 2 seconds may be applied to all processes of mold closing, injection, metering, cooling, mold opening, and ejection performed by the injection molding machine.

However, depending on the embodiment, it is also possible to set different delay times for each process with respect to the start time for each process performed by one injection molding machine. For example, it is also possible to apply a delay time of 2 seconds to the start time of the injection process and to apply a delay time of 4 seconds to the start time of the metering process. That is, in order to minimize the peak power, there may be a case where the delay time for each process is set differently even for the start time of each process. However, if the delay time is set differently for each process, a problem may occur in the quality of the product produced by the injection molding machine. It can be preset.

Meanwhile, the controller 120 may set the operating conditions of each injection molding machine by using the set delay time or the delay time for each process. Here, the operating conditions set by the control unit 120 may include identification information of each injection molding machine, product information, and delay times of injection molding machines corresponding to the identification information or delay times for each process.

The control unit 130 may transmit a control signal to a plurality of injection molding machines according to operating conditions. The control unit 130 may generate a control signal according to each set operating condition, and the communication unit 110 may transmit the generated control signal to each injection molding machine. Accordingly, the integrated operation control apparatus 100 may control the plurality of injection molding machines to operate according to the set operating conditions, respectively. Here, the control signal transmitted by the controller 120 may be implemented as shown in FIG. 6(b) or FIG. 6(c). That is, it may include identification information (ID) for distinguishing the injection molding machine to which the control signal is applied, and delay time information of the corresponding injection molding machine. In this case, the delay time information may include the same delay time (D, Delay time) for each process of the injection molding machine, or different delay times (D1, D2, D3, ..., D6) for each process.

Accordingly, when the delay time information of the control signal has the same delay time for each process as shown in FIG. 6(b), the injection molding machine processes (mold closing, injection, metering, cooling) according to the delay time. , mold opening, ejection) by delaying the start time, the peak power of the total power consumption can be minimized.

On the other hand, in the case where the delay time information of the control signal is different from each other for each process of the injection molding machine as shown in FIG. The start time can be applied differently for each process of the process, and through this, the peak power of the total power consumption can be minimized.

The display unit 130 displays the operation status including the power consumption of the plurality of injection molding machines 1, 2, ..., N, the total power consumption consumed in the factory, and the process in progress of each injection molding machine. can be displayed Here, any display unit 130 may be applied as long as it can visually display the driving status, and according to an embodiment, it may further include a device such as a speaker to provide the driving status to the user through visual as well as hearing. It is also possible to provide Additionally, the display unit 130 may include a user interface (UI) for setting operating conditions of the plurality of injection molding machines, and the user can directly adjust the operating conditions of each injection molding machine according to the operating status using the UI. may be

Additionally, the integrated operation control device 100 according to an embodiment of the present invention adds an injection molding machine or stops the operation of some injection molding machines while the plurality of injection molding machines 1, 2, ..., N are driven. In this case, it is possible to reset the operating conditions to optimize the overall power consumption.

For example, there may be a case in which some of the injection molding machines provided in one factory are operated first, and then the remaining injection molding machines are additionally operated. In this case, the power consumption of the additionally operated injection molding machines is overlapped, and a problem such as an excessive increase in the peak power of the power consumption consumed in the entire factory may occur. In addition, while the plurality of injection molding machines are operating, there may be cases in which the operation of some injection molding machines is stopped due to a failure or inspection. In this case, if the remaining injection molding machines are driven without resetting the operating conditions, problems such as inefficient operation of the remaining injection molding machines may occur. Accordingly, the integrated operation control apparatus 100 according to an embodiment of the present invention may reset the operating conditions of all injection molding machines in consideration of added or stopped injection molding machines.

Specifically, the communication unit 110 receives an additional request signal for adding an injection molding machine or a stop request signal for stopping the operation of some injection molding machines while the plurality of injection molding machines 1, 2, ..., N are driven. can Here, the additional request signal and the stop request signal may include driving information and power consumption information of the injection molding machine to be added or the injection molding machine to be stopped. The driving information may include identification information of the injection molding machine and a start time for each process, and the power consumption information includes a power consumption pattern indicating the amount of power consumed by each process required for driving the injection molding machine or the amount of power consumed by time required for driving the injection molding machine. etc. may be included. When an additional request signal or a stop request signal is received, the communication unit 110 may request the control unit 120 to reset the operating conditions corresponding to each.

The control unit 120 may reset the operating conditions of the injection molding machines in response to the additional request signal or the stop request signal.

First, when the additional request signal is received, it corresponds to a case in which the injection molding machine is additionally operated in addition to the currently driven injection molding machine. Accordingly, the control unit 120 operates to minimize the peak power of the total power consumed when driving all the injection molding machines including the added injection molding machine by using the driving information and the power consumption information of the injection molding machine included in the additional request signal. Conditions can be reset. Here, while the operating conditions of the currently driven injection molding machines are maintained, the operating conditions of the injection molding machines to be added may be additionally set. That is, it is possible to control the addition of injection molding machines while minimizing the effect on the running injection molding machine.

Specifically, the controller 120 may calculate the peak power of the total power consumed when the delay time is applied to the start time for each process of the injection molding machines to be added. That is, the total power consumption may be checked by adding the power consumption of the newly added second injection molding machines to the power consumption of the currently driven first injection molding machines. Thereafter, in a manner of deriving a delay time that minimizes the peak power of the total power consumption, operating conditions for each of the injection molding machines to be added may be set. Here, the delay time may be set to be the same for all processes performed by one injection molding machine, or may be set to have different delay times for each process according to the start time of each process.

Depending on the embodiment, it is also possible to set the operating conditions using the power consumption patterns of the injection molding machines to which the control unit 120 is added. That is, there may be a first integrated consumption pattern formed by overlapping the power consumption of the currently driven first injection molding machines, and the overlapping power consumption pattern by overlapping the power consumption patterns of the second injection molding machines added to the first integrated consumption pattern. can create Thereafter, by adjusting the power consumption patterns of the second injection molding machines at the time axis position, the magnitude of the peak power included in the overlapping power consumption pattern may be minimized. The controller 120 may set a second integrated power consumption pattern based on the minimized overlapping power consumption pattern, and may set a reference time point of the second injection molding machines from the second integrated power consumption pattern. Thereafter, the operating conditions of the second injection molding machines may be set so that the processes of the second injection molding machines are sequentially performed from the reference point.

On the other hand, when the stop request signal is received, it corresponds to the case of stopping the operation of some of the currently driven injection molding machines. Therefore, the control unit 120 can classify the injection molding machine for which the stop is requested by using the driving information of the injection molding machine included in the stop request signal, and the peak of the total power consumption required for driving the remaining injection molding machines except for the injection molding machine for which the stop is requested. Operating conditions can be reset to minimize power. Specifically, the control unit 120 calculates the peak power of the total power consumed when the delay time is applied to the start time for each process of the remaining injection molding machines except for the stopped injection molding machines, and the delay time for minimizing the peak power can be derived and reset to the operating conditions.

Depending on the embodiment, it is also possible for the control unit 120 to set the operating conditions using the power consumption patterns of the injection molding machines. In this case, an overlapping power consumption pattern may be generated by overlapping the power consumption of the remaining injection molding machines except for the injection molding machines that are stopped first. Thereafter, the size of the peak power included in the overlapping power consumption pattern may be minimized by adjusting the position of the time axis of the power consumption pattern, and the minimized overlapping power consumption pattern may be set as the integrated power consumption pattern. Here, a reference time point of the remaining injection molding machines may be set using the integrated power consumption pattern, and the operating conditions may be reset so that the processes of the remaining injection molding machines are sequentially performed from the reference time point. In this case, assuming that the injection molding machines perform the same process at the same reference time point, the power consumption patterns may be overlapped, and then the delay time may be set by moving the power consumption patterns corresponding to each injection molding machine.

5 is a timing diagram illustrating an operation of an integrated operation control device according to an embodiment of the present invention.

5, the integrated operation control device 100 may receive a drive request signal from at least two or more injection molding machines among a plurality of injection molding machines (1, 2, ..., n) (s1), and a power meter ( Power consumption of each injection molding machine may be received from w) (s3). According to an embodiment, the integrated operation control device 100 may first request power consumption information corresponding to each of the injection molding machines from the watt-hour meter w (s2). In this case, the integrated operation control apparatus 100 may request power consumption information of the injection molding machines that have transmitted the drive request signal by using the identification information of the injection molding machine included in the drive request signal.

Thereafter, the integrated operation control apparatus 100 may use the received power consumption information and driving information such as the start time for each process of the injection molding machines to set operating conditions that can minimize the peak power of the total power consumption (s4). ). The integrated operation control apparatus 100 may generate a control signal including a delay time of each injection molding machine according to a set operating condition, and transmit it to each injection molding machine (s5). The injection molding machine performs a process according to the received control signal (s6), thereby minimizing the peak power of the total power consumption.

On the other hand, there may be a case where it is desired to add a driven injection molding machine. In this case, the injection molding machine to be added may transmit an additional request signal to the integrated operation control device 100 (s7). In addition, depending on the embodiment, there may be a case where it is desired to stop some of the currently running injection molding machines. In this case, the injection molding machine to be stopped may transmit a stop request signal to the integrated operation control device 100 (s8). ). The integrated operation control device 100 may reset the operating conditions of the injection molding machines in response to the additional request signal or the stop request signal (s9). That is, by using the driving information and power consumption information of the injection molding machines that are added or stopped, an operating condition that minimizes the peak power of the total power consumption may be reset. The integrated operation control apparatus 100 may generate a control signal including a delay time of each injection molding machine according to the reset operation condition, and transmit it to each injection molding machine (s10). The injection molding machine performs a process according to the received control signal (s11), and through this, even when adding or stopping the injection molding machine, the peak power of the total power consumption can be minimized.

7 is a flowchart illustrating a power saving operation method according to an embodiment of the present invention.

Referring to Figure 7, the power saving operation method according to an embodiment of the present invention, the driving request receiving step (S110), the power consumption receiving step (S120), the operation condition setting step (S130) and the operation control step (S140) may include

Hereinafter, a power saving operation method according to an embodiment of the present invention will be described with reference to FIG. 7 .

In the driving request receiving step ( S110 ), the integrated operation control device may receive a driving request signal including driving information of the injection molding machines from the plurality of injection molding machines. The injection molding machine may request the injection molding machine to be driven by transmitting a drive request signal to the integrated operation control device before starting product production. In this case, the drive request signal may include identification information, product information, and start time for each process.

In the power consumption receiving step (S120), it is possible to receive power consumption information required when the injection molding machine is driven. Here, the power consumption information may be an amount of power consumed when the injection molding machine performs one process cycle (mold closing, injection, metering, cooling, mold opening, and ejection). In a factory equipped with a plurality of injection molding machines, a watt-hour meter for measuring the amount of power consumed by each injection molding machine may be included, and the integrated operation control device receives power consumption information corresponding to the injection molding machine that has transmitted the drive request signal from the watt-hour meter. can receive Depending on the embodiment, it is also possible to receive each power consumption information from the injection molding machine.

In the operation condition setting step ( S130 ), operating conditions for optimizing the total power consumption according to the operation of the plurality of injection molding machines may be set using the driving information and the power consumption information. Specifically, the integrated operation control device may set the operating conditions to minimize the peak power of the total power consumed when the plurality of injection molding machines are simultaneously driven. At this time, the operating condition set by the integrated operation control device is the same delay time (D, Delay Time) or Each process may include different delay times (D1, D2, D3, ..., D6) for each process. When a plurality of injection molding machines perform the same process at the same time, the peak power may rapidly increase, so that the timing at which each process is performed is dispersed. Different delay times can be set at the start of each star. In this case, since the same process is distributed without overlapping, peak power can be minimized.

In some embodiments, the power consumption patterns of the respective injection molding machines may be overlapped in the operation condition setting step S130 , and the delay time may be set to minimize the peak power included in the overlapped power consumption patterns. That is, the peak power can be minimized by overlapping a plurality of power consumption patterns to generate an overlapping power consumption pattern, and then moving each power consumption pattern left and right along the time axis. Here, since the power consumption pattern moves along the time axis according to the setting of the delay time, it is possible to set the delay time to minimize the peak power. In this case, the overlapping power consumption pattern in which the peak power is minimized may be set as the integrated power consumption pattern.

Here, the delay time set to move the power consumption pattern along the time axis may be set the same for all processes performed by one injection molding machine, and according to an embodiment, start for each process performed by one injection molding machine It is also possible to set different delay times for each process with respect to the time point.

In the operation control step S140, a control signal may be transmitted to a plurality of injection molding machines according to operating conditions. The integrated operation control apparatus may generate a control signal according to the operation condition generated in the operation condition setting step S130 and transmit the generated control signal to each injection molding machine. Here, the control signal may include identification information for distinguishing the injection molding machine and delay time information of the corresponding injection molding machine. In this case, the delay time information may include the same delay time for each process of the injection molding machine or a different delay time for each process for each process. Therefore, each injection molding machine can perform a process by applying a delay time set according to a control signal, thereby minimizing the peak power of the total power consumption.

On the other hand, although not shown, depending on the embodiment, a display step may be further included. In the display step, the power consumption of a plurality of injection molding machines, the total power consumed in the factory, and the process in progress of each injection molding machine are displayed. Including driving status can be displayed. Here, in the display step, the driving status may be provided by using a display device capable of visually displaying the driving status, and according to an embodiment, a device such as a speaker may be further included to allow the user to use not only the visual but also the auditory sense. It can be made to recognize the driving status. In addition, in the display step, a UI (User Interface) for setting the operating conditions of the injection molding machines may be output, and the user may adjust the operating conditions of each injection molding machine according to the operating status.

8 is a flowchart illustrating a power saving operation method according to another embodiment of the present invention.

Referring to FIG. 8 , the power saving operation method according to another embodiment of the present invention may include a driving step (S210), a request receiving step (S220), a resetting step (S230), and an operation control step (S240). .

Hereinafter, a power saving operation method according to another embodiment of the present invention will be described with reference to FIG. 8 .

In the driving step S210 , the integrated operation control device may set operating conditions using driving information and power consumption information of the plurality of injection molding machines, and drive the plurality of injection molding machines according to the operating conditions. That is, the integrated operation control device may set operating conditions that minimize the peak power of the total power consumption of the injection molding machines, so that each of the injection molding machines operates.

In the request receiving step ( S220 ), the integrated operation control device may receive an additional request signal for adding a driven injection molding machine or a stop request signal for stopping the operation of some injection molding machines while the plurality of injection molding machines are being driven. That is, when the injection molding machines are operating, the user may want to add more operating injection molding machines or stop some injection molding machines in operation. In this case, an additional request signal or a stop request signal for each injection molding machine may be transmitted to the integrated operation control device. Here, the driving information includes identification information of the injection molding machines and the start time for each process, and the power consumption information indicates the amount of power consumed by each process consumed when the injection molding machine is driven or the amount of power consumed by time required when the injection molding machine is driven. It may include patterns. Power consumption information can be received through each injection molding machine or a power meter.

In the resetting step ( S230 ), the integrated operation control device may reset the operating conditions of the injection molding machines by using the driving information and power consumption information of the injection molding machines to be added or stopped.

First, when an additional request signal is received, by using the driving information and power consumption information of the injection molding machine included in the additional request signal, it is reset to an operating condition that minimizes the peak power of the total power consumption required for driving the injection molding machines. can do. That is, the operating conditions may be reset to minimize the peak power of the total power consumed when driving all the injection molding machines including the additional injection molding machines. In this case, by setting the operating conditions of the injection molding machines to be added while maintaining the operating conditions of the currently driven injection molding machines, the influence on the injection molding machines being driven can be minimized.

Specifically, it is possible to calculate the peak power of the total power consumed when the delay time is applied to the start time for each process of the added injection molding machines. That is, the total power consumption may be checked by adding the power consumption of the newly added second injection molding machines to the power consumption of the currently driven first injection molding machines. Thereafter, in a manner of deriving a delay time that minimizes the peak power of the total power consumption, operating conditions for each of the injection molding machines to be added may be set. Here, the delay time may be set to be the same for all processes performed by one injection molding machine, or may be set to have different delay times for each process according to the start time of each process.

Depending on the embodiment, it is also possible to set the operating conditions using the power consumption patterns of the injection molding machines to be added. That is, there may be a first integrated consumption pattern formed by overlapping the power consumption of the currently driven first injection molding machines, and the overlapping power consumption pattern by overlapping the power consumption patterns of the second injection molding machines added to the first integrated consumption pattern. can create Thereafter, the magnitude of the peak power included in the overlapping power consumption pattern may be minimized by adjusting the power consumption pattern of the second injection molding machines at the position of the time axis. Here, the minimized overlapping power consumption pattern may be set as the second integrated power consumption pattern, and reference points of the second injection molding machines may be set from the second integrated power consumption pattern. Thereafter, the operating conditions of the second injection molding machines may be set so that the processes of the second injection molding machines are sequentially performed from the reference point.

On the other hand, when the stop request signal is received, the injection molding machine for which the stop request is requested can be distinguished using the driving information and power consumption information of the injection molding machine included in the stop request signal. Thereafter, the operating conditions may be reset to minimize the peak power of the total power consumed when driving the remaining injection molding machines except for the injection molding machine that has been requested to be stopped.

Specifically, the peak power of the total power consumed when the delay time is applied to the start time of each process of the remaining injection molding machines except the stopped injection molding machines is calculated, and the delay time to minimize the peak power is derived, thereby operating conditions can be reset to

Depending on the embodiment, it is also possible to set the operating conditions using the power consumption patterns of the injection molding machines. In this case, an overlapping power consumption pattern may be generated by overlapping the power consumption of the remaining injection molding machines except for the injection molding machines that are stopped first. Thereafter, the size of the peak power included in the overlapping power consumption pattern may be minimized by adjusting the position of the time axis of the power consumption pattern, and the minimized overlapping power consumption pattern may be set as the integrated power consumption pattern. Here, a reference time point of the remaining injection molding machines may be set using the integrated power consumption pattern, and the operating conditions may be reset so that the processes of the remaining injection molding machines are sequentially performed from the reference time point. In this case, assuming that the injection molding machines perform the same process at the same reference time point, the power consumption patterns may be overlapped, and then the delay time may be set by moving the power consumption patterns corresponding to each injection molding machine.

In the operation control step S240 , the integrated operation control device may transmit a control signal to the plurality of injection molding machines according to the reset operation conditions. The integrated operation control apparatus may generate a control signal according to the operation condition reset in the resetting step ( S240 ), and may transmit the generated control signal to each injection molding machine. Here, the control signal may include identification information for distinguishing the injection molding machine and delay time information of the corresponding injection molding machine. In this case, the delay time information may include the same delay time for each process of the injection molding machine or a different delay time for each process for each process. Therefore, each injection molding machine can perform a process by applying a delay time set according to a control signal, thereby minimizing the peak power of the total power consumption.

The present invention is not limited by the above embodiments and the accompanying drawings. For those of ordinary skill in the art to which the present invention pertains, it will be apparent that the components according to the present invention can be substituted, modified and changed without departing from the technical spirit of the present invention.

1, 2, ... , n: injection molding machine 10: mold part
11: movable platen 20: ejection part
100: integrated operation control device 110: communication unit
120: control unit 130: display unit
S110: driving request receiving step S120: power consumption receiving step
S130: operation condition setting step S140: operation control step
S210: driving step S220: request receiving step
S230: reset step S240: operation control step

Claims (16)

In the power saving operation method of an integrated operation control device,
a driving step of setting operating conditions using driving information and power consumption information of the plurality of injection molding machines, and driving the plurality of injection molding machines according to the operating conditions;
a request receiving step of receiving an additional request signal for adding a driven injection molding machine or a stop request signal for stopping the operation of some injection molding machines while driving the plurality of injection molding machines;
When the additional request signal is received, by using the driving information and power consumption information of the injection molding machine included in the additional request signal, the operation condition for minimizing the peak power of the total power consumption required for driving the injection molding machines is reset. reset step; and
an operation control step of transmitting a control signal to the plurality of injection molding machines according to the reset operation conditions;
The reset step is
generating an overlapping power consumption pattern by overlapping the power consumption patterns of the added second injection molding machines on a first integrated power consumption pattern formed by overlapping the power consumption patterns of the first injection molding machines being driven;
adjusting the time axis position of the power consumption patterns of the second injection molding machines to minimize the magnitude of the peak power included in the overlapping power consumption pattern, and setting the minimized overlapping power consumption pattern as a second integrated power consumption pattern ; and
and setting a reference point of time of the second injection molding machines using the second integrated power consumption pattern, and resetting the operating conditions so that the processes of the second injection molding machines are sequentially performed from the reference point. power saving operation method.
According to claim 1,
The driving information includes identification information of the injection molding machine and a start time for each process,
The power consumption information includes a power consumption pattern indicating the amount of power consumed by each process required for driving the injection molding machine or the amount of power consumed for each time required for driving the injection molding machine.
delete The method of claim 1, wherein the resetting step
Calculating the peak power of the total power consumed when the delay time is applied to the start time of each process of the added injection molding machines, deriving the delay time that minimizes the peak power, and resetting the operation conditions A power-saving operation method characterized by its characteristics.
delete The method of claim 1, wherein the resetting step
When the stop request signal is received, using the driving information and power consumption information of the injection molding machine included in the stop request signal, resetting an operating condition that minimizes the peak power of the total power consumption required for driving the injection molding machines. Power saving operation method, characterized in that.
The method of claim 6, wherein the resetting step
Calculating the peak power of the total power consumed when the delay time is applied to the start time for each process of the remaining injection molding machines except for the stopped injection molding machines, and deriving the delay time to minimize the peak power, Power saving operation method, characterized in that resetting the condition.
In the power saving operation method of an integrated operation control device,
a driving step of setting operating conditions using driving information and power consumption information of the plurality of injection molding machines, and driving the plurality of injection molding machines according to the operating conditions;
a request receiving step of receiving an additional request signal for adding a driven injection molding machine or a stop request signal for stopping the operation of some injection molding machines while driving the plurality of injection molding machines;
When the stop request signal is received, using the driving information and power consumption information of the injection molding machine included in the stop request signal, resetting an operating condition that minimizes the peak power of the total power consumption required for driving the injection molding machines. reset step; and
an operation control step of transmitting a control signal to the plurality of injection molding machines according to the reset operation conditions;
The reset step is
generating an overlapping power consumption pattern by overlapping power consumption patterns of the remaining injection molding machines except for the stopped injection molding machines;
adjusting the time axis position of the power consumption pattern to minimize the magnitude of the peak power included in the overlapping power consumption pattern, and setting the minimized overlapping power consumption pattern as an integrated power consumption pattern; and
and setting a reference time point of the remaining injection molding machines using the integrated power consumption pattern, and resetting the operating conditions so that the processes of the remaining injection molding machines are sequentially performed from the reference time point. How to drive.
a communication unit for receiving a driving request signal including driving information of the injection molding machine from a plurality of injection molding machines, and receiving power consumption information required for driving the injection molding machine;
By using the driving information and the power consumption information, an operating condition for minimizing the peak power of the total power consumed when driving the plurality of injection molding machines is set, and the operating condition is transmitted to the plurality of injection molding machines through the communication unit. a control unit to transmit; and
A display unit for displaying the power consumption of the plurality of injection molding machines and the operating status including the processes in progress of the injection molding machines,
the control unit
When an additional request signal for adding an injection molding machine is received while the plurality of injection molding machines are being driven, an operating condition that minimizes the peak power of the total power consumption required for driving all injection molding machines including the added injection molding machine is reset. and
the control unit
generating an overlapping power consumption pattern by superimposing the power consumption pattern of the added second injection molding machines on the first integrated power consumption pattern formed by overlapping the power consumption patterns of the first injection molding machines in operation;
By adjusting the time axis position of the power consumption pattern of the second injection molding machines, the magnitude of the peak power included in the overlapping power consumption pattern is minimized, and the minimized overlapping power consumption pattern is set as a second integrated power consumption pattern,
Integrated operation, characterized in that by setting a reference time point of the second injection molding machines by using the second integrated power consumption pattern, and resetting the operating conditions so that the processes of the second injection molding machines are sequentially performed from the reference time point control device.
10. The method of claim 9,
The driving information includes identification information of the injection molding machine and a start time for each process,
and the power consumption information includes a power consumption pattern indicating the amount of power consumed by each process required for driving the injection molding machine or the amount of power consumed for each time required for driving the injection molding machine.
delete 10. The method of claim 9, wherein the control unit
Calculating the peak power of the total power consumed when the delay time is applied to the start time of each process of the added injection molding machines, deriving the delay time that minimizes the peak power, and resetting the operation conditions Integrated operation control system characterized by the.
delete 10. The method of claim 9, wherein the control unit
When a stop request signal for stopping the operation of some injection molding machines is received while driving the plurality of injection molding machines, the stopped injection molding machine is machined by using the driving information and power consumption information of the injection molding machine included in the stop request signal. An integrated operation control device, characterized in that it resets the operating conditions that minimize the peak power of the total power consumed when driving the remaining injection molding machines.
15. The method of claim 14, wherein the control unit
Calculating the peak power of the total power consumed when the delay time is applied to the start time for each process of the remaining injection molding machines except for the stopped injection molding machines, and deriving the delay time to minimize the peak power, An integrated operation control device, characterized in that resetting the condition.
a communication unit for receiving a driving request signal including driving information of the injection molding machine from a plurality of injection molding machines, and receiving power consumption information required for driving the injection molding machine;
By using the driving information and the power consumption information, an operating condition for minimizing the peak power of the total power consumed when driving the plurality of injection molding machines is set, and the operating condition is transmitted to the plurality of injection molding machines through the communication unit. a control unit to transmit; and
A display unit for displaying the power consumption of the plurality of injection molding machines and the operating status including the processes in progress of the injection molding machines,
the control unit
When a stop request signal for stopping the operation of some injection molding machines is received while the plurality of injection molding machines are being driven, the stopped injection molding machines are stopped using the driving information and power consumption information of the injection molding machine included in the stop request signal. Reset the operating conditions that minimize the peak power of the total power consumed when driving the remaining injection molding machines,
the control unit
By overlapping the power consumption patterns of the remaining injection molding machines except for the stopped injection molding machines, an overlapping power consumption pattern is generated,
By adjusting the time axis position of the power consumption pattern, the magnitude of the peak power included in the overlapping power consumption pattern is minimized, and the minimized overlapping power consumption pattern is set as an integrated power consumption pattern,
The integrated operation control apparatus according to claim 1, wherein a reference time point of the remaining injection molding machines is set using the integrated power consumption pattern, and the operating conditions are reset so that the processes of the remaining injection molding machines are sequentially performed from the reference time point.

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