JP5980694B2 - Display device for injection molding machine - Google Patents

Description

  The present invention relates to a display device for an injection molding machine having means for storing a plurality of sets of set values of molding conditions for an injection molding machine.

In order to mold a molded product with an injection molding machine, it is necessary to set respective operation conditions for each step such as injection, holding pressure, weighing, mold opening, mold closing, and the like of the molding operation. This operating condition is generally called a molding condition.
The molding conditions are set such as the position, speed, pressure, etc. for the processes such as injection, holding pressure, weighing, mold opening, mold closing, etc. corresponding to the mold or molded product to be molded. A set of molding condition setting values is used. A set of molding condition set values is stored in a storage unit built in the injection molding machine, a storage unit inserted into a control unit of the injection molding machine such as a memory card, and a management unit connected to the injection molding machine via a communication line. Generally, it is stored in a storage means or the like (see Patent Document 1).

JP-A-61-248722

  In recent years, the storage means of the above-described injection molding machine has been increased in capacity, and the number of sets of set values of molding conditions that can be stored has also increased. As a result, a set of molding condition settings during the molding condition adjustment process, which could not be stored due to storage capacity limitations, and molding conditions that were fine-tuned due to the effects of the type of resin and the surrounding environment of the molding machine. A set of values can be stored without worrying about the storage capacity.

  For example, when finding a molding condition for molding a good product while molding with trial and error, if you remember a set of molding condition settings during adjustment, even if the adjustment policy is wrong, It is possible to recall a stored set of molding condition set values during adjustment and perform adjustment again.

Also, when the molding quality is affected by the type of resin and the ambient temperature of the injection molding machine, it was memorized when molding in the same resin or ambient environment in the past without having to adjust the molding conditions again. By calling and using a set of molding condition set values, it is possible to improve the efficiency of molding condition adjustment.
Thus, the ability to store the set of molding condition set values without worrying about the storage capacity of the storage means of the injection molding machine has the advantage that the convenience in adjusting the molding conditions is improved.

  However, if a set of set values of molding conditions is stored as described above, a large number of sets are stored on the storage means of the injection molding machine. In order to identify a large number of sets, it is difficult to find a desired set later unless complicated tasks such as assigning appropriate names to classify and classifying and storing similar sets are performed. Problem arises.

  Accordingly, an object of the present invention is to select an arbitrary set as a comparison reference set in advance from a set of set values of a plurality of molding conditions in consideration of the above-described problems of the prior art, and to remove the selected set. All or a part of the comparison group is a comparison target group, and a display means is provided that makes it easy to find a group having a set value of molding conditions similar to the comparison reference group from the comparison target group. It is providing the display apparatus of the injection molding machine characterized by these.

The invention according to claim 1 of the present application is a storage means for storing N (N ≧ 2) sets consisting of set values of M molding conditions, and brute force from a part or all of the N sets. Two sets are selected by the method, one is set as a comparison reference set, and the other is set as a comparison set. The molding condition set value of the comparison reference set and the set value of the molding condition of the comparison set are set as M molding conditions. The comparison means for comparing each of the above, and the number of molding conditions in which the set value of the molding condition of the set to be compared is within a predetermined range with respect to the set value of the molding condition of the comparison reference group and the molding condition outside the predetermined range counting means for counting the number of each said comparison set, then a corresponding number of both the number and the predetermined range in which molding conditions of molding conditions the is within a predetermined range or either one, the comparison sets An injection molding machine characterized by comprising display means for displaying It is shown apparatus.

The invention according to claim 2 is a storage means for storing N (N ≧ 2) sets of M molding condition set values, and a brute force method among some or all of the N sets. Two sets are selected, one set as a comparison reference set, the other set as a comparison set, and a set value of molding conditions of the comparison set and a set value of forming conditions of the set of comparison sets are set to M molding conditions. The number of molding conditions in which the setting value of the molding condition of the set to be compared is within a predetermined range and the number of molding conditions that are out of the predetermined range with respect to the setting value of the molding condition of the comparison reference group The counting means that counts both or any one of the comparison target groups, and the ratio of the molding condition that is within the predetermined range and the ratio of the molding condition that is outside the predetermined range, or either one of the comparison Provided display means to display corresponding to the target group A display device for an injection molding machine, wherein.

The invention according to claim 3 classifies the M molding conditions into L (L ≧ 2) groups, and the comparison means sets the molding condition set value of the comparison reference group and the comparison target group. a display device for an injection molding machine according to one claim 1 or 2, whichever is and comparing for each molding condition in the group and a set value of the molding condition for each group.

In the invention according to claim 4 , two sets are selected by a round-robin method from a part or all of N (N ≧ 2) sets consisting of set values of M molding conditions, and one of them is a comparison reference set. The other set is a comparison target set, the molding condition set value of the comparison reference set is compared with the molding condition set value of the comparison set for each of the M molding conditions, and the comparison reference set molding condition is set. The number of molding conditions in which the set value of the molding condition of the comparison target group is within a predetermined range and the number of molding conditions that are out of the predetermined range are counted for each of the comparison target groups. A method of displaying an injection molding machine, wherein the number of molding conditions within the predetermined range and / or the number of molding conditions outside the predetermined range are displayed in correspondence with the set to be compared. is there.

In the invention according to claim 5 , two sets are selected in a round-robin manner from some or all of N (N ≧ 2) sets consisting of set values of M molding conditions, and one of them is a comparison reference set. The other set is a comparison target set, the molding condition set value of the comparison reference set is compared with the molding condition set value of the comparison set for each of the M molding conditions, and the comparison reference set molding condition is set. The number of molding conditions in which the set value of the molding condition of the comparison target group is within a predetermined range and the number of molding conditions that are outside the predetermined range with respect to the set value of counted, the injection molding machine and displaying the both ratio of the the ratio of the molding conditions is within a predetermined range out of the predetermined range in which the molding conditions or any by one in correspondence with the comparison group, It is a display method.

The invention according to claim 6 classifies the M molding conditions into L (L ≧ 2) groups, and sets the molding condition setting value of the comparison reference group and the molding condition setting value of the comparison target group. Ru display method der injection molding machine according to any one of claims 4 or 5, wherein the comparing for each molding condition in the group bets for each group.

  According to the present invention, an arbitrary set is selected in advance as a comparison reference set from a set of set values of a plurality of molding conditions, and all or some of the sets excluding the selected set are set as comparison target sets. Provided with a display device for an injection molding machine, comprising a display means that makes it easy to find a set having a molding condition set value similar to that of a comparison reference set from among comparison target sets it can.

It is a figure explaining schematic structure of an injection molding machine. It is a figure explaining the memory | storage means which memorize | stored the set of the setting value of molding conditions. It is a flowchart explaining the process of this invention which counts the number of the molding conditions whose set value of the molding conditions of a comparison object group is in a predetermined range. It is a flow chart explaining processing of the present invention which counts the number of molding conditions where the set value of the molding condition of a comparison object group is within a predetermined range and the number of molding conditions outside the predetermined range. It is a figure explaining the memory | storage means which memorize | stored the number and ratio of the molding conditions which matched. It is a figure explaining the example 1 of a screen. It is a figure explaining the example 2 of a screen. It is a figure explaining the example 3 of a screen. It is a figure explaining the example 4 of a screen. It is a figure explaining the hardware constitutions of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram illustrating a schematic configuration of an injection molding machine. The injection molding machine generally includes an injection molding machine main body 1 in which an injection part and a mold clamping part are arranged on a base, and a control device 2 that controls the entire injection molding machine. The injection part is used to plasticize and measure the cylinder, the hopper for charging the resin pellets into the cylinder, the plastic pellets charged into the cylinder, and to inject the plasticized resin from the nozzle attached to the cylinder. In addition, a screw is provided in the cylinder. In the cylinder, the screw is driven by a motor in a rotation for plasticizing and an axial direction for injection. On the other hand, the mold clamping unit opens and closes the mold by moving the movable mold plate forward and backward with respect to the fixed mold plate, a fixed mold plate to which the fixed mold is attached, a movable mold plate to which the movable mold is attached, and the movable mold plate. A mold clamping device is provided.

  The control device 2 includes a CPU 3 that is a processor, an input / output circuit 4, a ROM 5, a RAM 6, a nonvolatile memory 7, and an LCD / MDI 8 that are connected to the CPU 3 via a bus 9. The input / output circuit 4 is a servo motor that drives the mold clamping part of the injection molding machine, a servo motor that rotates the screw, a servo motor that moves the screw in the axial direction and injects molten resin into the mold cavity, and rotation of the servo motor. Various sensors such as a position detector for detecting the position and a thermometer for measuring the temperature of the cylinder of the injection unit are connected.

  The ROM 5 stores a control program for controlling the entire injection molding machine. In the embodiment of the present invention, the ROM 5 selects an arbitrary set in advance as one comparison reference set from a set of set values of a plurality of molding conditions, and all or part of the set excluding the selected set. A control program for realizing a display means that makes it easy to find a set having a molding condition set value similar to the comparison reference set from the comparison set. Has been. The RAM 6 is used for temporary storage of data. The nonvolatile memory 7 stores screen setting data and NC programs according to the present invention. The LCD / MDI 8 inputs molding conditions and various commands and displays them on an LCD (Liquid Crystal Display).

  The injection molding machine executes a mold closing process, an injection / holding process, a metering process, a cooling process, a mold opening process, and an ejecting process (ejecting process) in one cycle of product molding. The injection molding machine is provided with a display (LCD / MDI8), and on the display (LCD), various operation condition setting screens for setting and checking operation conditions (molding conditions) for automatic operation, Various actual measurement data display screens for displaying actual measurement data during automatic operation are displayed.

  FIG. 2 is a diagram for explaining a storage unit that stores a set of set values of molding conditions. In the present invention, an arbitrary one set is selected in advance as a comparison reference set from a set of setting values of a plurality of molding conditions stored in a non-volatile memory (see FIG. 1), and the selected set is selected. Provide a display means that makes it easy to find a set that has a set value of molding conditions similar to the comparison reference set from the set of comparison sets, with all or some of the sets except the set as the comparison set. By doing so, the problems of the prior art are solved.

  Specifically, it has comparison means for comparing each molding condition setting value of the comparison reference group selected by the selection means with the molding condition setting value of the comparison target group, and sets the molding condition of the comparison target group. If the value is within a predetermined range with respect to the setting value of the molding condition of the comparison reference group, it is considered that the molding condition setting value matches, and has a counting means for counting the number, and conversely the range If it is outside, it is regarded that they do not match, and has a counting means for counting the number. Each counting means may be only one or both. If the number of molding conditions matched for each comparison target set and / or the number of molding conditions not matched are displayed on the display means, the comparison target set with the larger number is more similar to the comparison reference set. You can see that The selection means can be realized as, for example, an input screen displayed on the LCD / MDI 8 in FIG. Further, the comparison means, the counting means, and the display means can be realized by the CPU 3 of the control device 2 and the LCD of the LCD / MDI 8.

FIG. 3 is a flowchart for explaining the processing of the present invention for counting the number of molding conditions in which the set value of the molding conditions of the comparison target group is within a predetermined range. Hereinafter, it demonstrates according to each step. This flowchart is a flowchart when the group (0) is a comparison reference group and the groups (1) to (n) are comparison target groups. Here, i represents an index for identifying a set, and j represents an index for identifying a molding condition.
[Step SA01] An index i for identifying a set is set to an initial value (i = 1).
[Step SA02] The index j for specifying the molding condition is an initial value (j = 0), and the number of molding conditions in which the setting value of the molding condition of the comparison target group is within a predetermined range (hereinafter, “the number of molding conditions within the predetermined range”). K (i) is an initial value (k (i) = 0).
[Step SA03] It is determined whether or not the set value (i, j) of the molding condition of the comparison target group matches the set value (0, j) of the molding condition of the comparison reference group. Shifts to step SA04, and if not matched (NO), shifts to step SA05. Here, the setting value (i, j) of the molding condition of the comparison target group matches the setting value (0, j) of the molding condition of the comparison reference group, even if they are not completely the same. If the setting value (i, j) of the molding condition is within the predetermined range with respect to the setting value (0, j) of the comparison reference group, it is considered to match, and if it is outside the range, it matches. It can be regarded as not.
[Step SA04] A value obtained by adding 1 to the molding condition number k (i) within the predetermined range is set as the molding condition number k (i) within the predetermined range.
[Step SA05] It is determined whether or not the index j for specifying the molding condition is equal to the maximum molding condition number m. If it is equal (YES), the process proceeds to Step SA07, and if it is not equal (NO), the process proceeds to Step SA06. Transition.
[Step SA06] A value obtained by adding 1 to the index j for specifying the molding condition is set as an index j for specifying the molding condition, and the process returns to Step SA03.
[Step SA07] It is determined whether or not the index i specifying the group is the maximum number n, and if equal (YES), the process ends. If not (NO), the process proceeds to Step SA08.
[Step SA08] A value obtained by adding 1 to the index i specifying the set is used as the index i specifying the set, and the process returns to step SA02 to continue the processing.

  The above flowchart will be supplementarily described. Step SA03 corresponds to a comparison unit that compares the set value (0, j) of each molding condition of the comparison reference group with the set value (i, j) of the molding condition of the comparison target group. Step SA04 corresponds to a counting unit that counts the number of the setting values of the molding conditions of the comparison target group and the setting values of the molding conditions of the comparison reference group which are the same.

FIG. 4 is a flowchart for explaining the processing of the present invention for counting the number of molding conditions where the set value of the molding conditions of the comparison target group is within a predetermined range and the number of molding conditions outside the predetermined range. This flowchart is a flowchart when the group (0) is a comparison reference group and the groups (1) to (n) are comparison target groups. Hereinafter, it demonstrates according to each step.
[Step SB01] An index i for identifying a set is set to an initial value (i = 1).
[Step SB02] The index j specifying the molding condition is an initial value (j = 0), and the number of molding conditions in which the set value of the molding condition of the comparison target group is within a predetermined range (hereinafter, “the number of molding conditions within the predetermined range”). K (i) is an initial value (k (i) = 0), and the number of molding conditions where the set value of the molding condition of the comparison target group is outside the predetermined range (hereinafter referred to as “the number of molding conditions outside the predetermined range”). ) P (i) is an initial value (p (i) = 0).
[Step SB03] It is determined whether or not the set value (i, j) of the molding condition of the comparison target group matches the set value (0, j) of the molding condition of the comparison reference group. Shifts to step SB05, and if not matched (NO), shifts to step SB04. Here, the setting value (i, j) of the molding condition of the comparison target group matches the setting value (0, j) of the molding condition of the comparison reference group, even if they are not completely the same. If the setting value (i, j) of the molding condition is within the predetermined range with respect to the setting value (0, j) of the comparison reference group, it is considered to match, and if it is outside the range, it matches. It can be regarded as not.
[Step SB04] The value obtained by adding 1 to the molding condition number p (i) outside the predetermined range is set as the molding condition number p (i) outside the predetermined range, and the process proceeds to Step SB06.
[Step SB05] A value obtained by adding 1 to the molding condition number k (i) within the predetermined range is set as the molding condition number k (i) within the predetermined range.
[Step SB06] It is determined whether or not the index j for specifying the molding condition is equal to the maximum molding condition number m. If it is equal (YES), the process proceeds to Step SB08. If it is not equal (NO), the process proceeds to Step SB07. Transition.
[Step SB07] A value obtained by adding 1 to the index j for specifying the molding condition is set as an index j for specifying the molding condition, and the process returns to Step SB03.
[Step SB08] It is determined whether or not the index i specifying the group is equal to the maximum number of groups n. If the index i is equal (YES), the process ends. If not (NO), the process proceeds to Step SB09.
[Step SB09] A value obtained by adding 1 to the index i specifying the set is set as the index i specifying the set, and the process returns to step SB02 to continue the processing.
The above flowchart will be supplementarily described. Step SB03 corresponds to a comparison unit that compares the set value of each molding condition of the comparison reference group with the set value of the molding condition of the comparison target group. In step SB05, if the set value of the molding condition of the comparison target group is within a predetermined range with respect to the set value of the molding condition of the comparison reference group, it is considered that the set value of the molding condition matches, and the number In contrast, step SB04 corresponds to the counting means that counts the number by assuming that they do not match if they are out of range.

  On the display device of the injection molding machine (LCD (liquid crystal display device) of LCD / MDI 8 in FIG. 1), the number of molding conditions that match for each set to be compared may be displayed, or molding that matches. The number of conditions may be displayed as a ratio divided by the number of molding conditions to be counted (see FIGS. 5 and 6). As the identification information for identifying the comparison target group, the name of the comparison target group may be used as the identification information, or an identification number such as a number in parentheses of the group in FIG. 2 may be displayed as the identification information.

  By the way, generally in molding, when the mold is the same and the resin is different, the setting values of the molding conditions for opening and closing the mold are the same, and the setting values of the molding conditions for injection and metering are different. Further, when molding different molded products with the same resin, the set values of the molding conditions for temperature are the same, and the set values of other molding conditions such as injection, metering, and mold opening / closing are different. As described above, the similarity of molding conditions may require evaluation for each group of molding conditions such as mold opening / closing conditions, injection conditions, weighing conditions, temperature conditions, and the like.

  Therefore, for each group of molding conditions, the number of matches of the molding condition set value of the comparison target group with respect to the molding condition set value of the comparison reference group is counted, and the number of molding conditions that match for each group is displayed for each group. Or the proportion of molding conditions that coincide with each other may be displayed in correspondence with the set to be compared (see FIGS. 7 and 8). Then, in the comparison target group, if the comparison target groups are displayed side by side in the order of increasing or decreasing number of the molding condition setting values that match the molding condition setting values of the comparison reference machine group, a comparison similar to the comparison reference group The target set can be easily found. In addition, when the display location is limited, only the upper comparison target group with the largest number of matching molding conditions may be displayed, or only the comparison target group with the largest number of matching molding conditions is displayed. You may do it.

  The comparison reference group may be one of a plurality of molding condition setting values stored in the storage unit of the injection molding machine, or a group of molding condition setting values currently used in the injection molding machine. But it ’s okay. Also, two sets are selected by brute force method from a part or all of the set values of the molding conditions stored in the storage means, one set as a comparison reference set and the other set as a comparison set, and between the sets. You may display the number and ratio of the molding conditions which correspond. Thereby, it is possible to easily grasp which set is similar to which set among the set values of the molding conditions (FIG. 9).

  The hardware configuration of the present invention is shown in FIG. When the present invention is applied to an injection molding machine alone, all of the storage means, comparison means, counting means, and display means are mounted on the injection molding machine. In addition, when the injection molding machine is connected to the management device via a communication line, the storage means may be mounted on either the injection molding machine or the management device. Similarly, the comparison means, the counting means, and the display means may be mounted on any of them.

  FIG. 10A shows a configuration in which a single unit of the injection molding machine 10 includes a storage unit 11 and a comparison unit / counting unit / display unit 12. FIG. 10B shows a configuration in which the storage unit 11 is connected to the injection molding machine 10 and the comparison unit / counting unit / display unit 22 is provided in the management apparatus 20 connected to the communication line. FIG. 10C shows a configuration in which a storage unit 21 and a comparison unit / counting unit / display unit 22 are provided in a management device 20 to which the injection molding machine 10 is connected via a communication line. FIG. 10 (d) shows a configuration in which the injection molding machine 10 is provided with comparison means / counting means / display means 12 and the management device 20 is provided with storage means 21.

  According to the above-described embodiment of the present invention, it is possible to easily find a set similar to an arbitrary set selected from a set of set values of a plurality of molding conditions without complicated work. .

DESCRIPTION OF SYMBOLS 1 Injection molding machine main body 2 Control apparatus 3 CPU
4 I / O circuit 5 ROM
6 RAM
7 Nonvolatile memory 8 LCD / MDI
9 Bus

DESCRIPTION OF SYMBOLS 10 Injection molding machine 11 Memory | storage means 12 Comparison / counting / display means

20 management device 21 storage means 22 comparison / counting / display means

i Index for identifying a set j Index for identifying a molding condition k (i) Number of molding conditions within a predetermined range m Maximum number of molding conditions n Maximum number of sets p (j) Number of molding conditions outside a predetermined range

Claims (6)

Storage means for storing N (N ≧ 2) sets of set values of M molding conditions;
The aforementioned part of the N sets or among all two sets of Pick comparing one reference set in robin, and the other a comparison set, the set value of the comparison reference set of molding conditions, the comparison A comparison means for comparing the set value of the molding condition of the target set for each of the M molding conditions;
For each comparison target group, the number of molding conditions in which the setting value of the molding condition of the comparison target group is within a predetermined range and the number of molding conditions that are out of the predetermined range with respect to the setting value of the molding condition of the comparison reference group Counting means for counting;
Injection, characterized in that it comprises display means for display by a corresponding number of both the number and the predetermined range in which molding conditions of molding conditions the is within a predetermined range or either one, the comparison sets Display device for molding machine. Storage means for storing N (N ≧ 2) sets of set values of M molding conditions;
The aforementioned part of the N sets or among all two sets of Pick comparing one reference set in robin, and the other a comparison set, the set value of the comparison reference set of molding conditions, the comparison A comparison means for comparing the set value of the molding condition of the target set for each of the M molding conditions;
Either the number of molding conditions where the setting value of the molding condition of the comparison target group is within a predetermined range and the number of molding conditions outside the predetermined range with respect to the setting value of the molding condition of the comparison reference group, or either one Counting means for each comparison target group,
Injection comprising: display means for displaying either or both of the ratio of molding conditions that are within the predetermined range and the ratio of molding conditions that are out of the predetermined range in correspondence with the set to be compared Display device for molding machine. The M molding conditions are classified into L (L ≧ 2) groups, and the comparing unit groups the molding condition setting value of the comparison reference group and the molding condition setting value of the comparison target group. 3. The display device for an injection molding machine according to claim 1, wherein each of the molding conditions in the group is compared for each time . Two sets are selected by brute force method from some or all of N (N ≧ 2) sets consisting of set values of M molding conditions, and one is set as a comparison reference set and the other as a comparison set.
Comparing the setting value of the molding condition of the comparison reference group and the setting value of the molding condition of the comparison target group for each of the M molding conditions;
Either the number of molding conditions in which the setting value of the molding condition of the comparison target group is within a predetermined range and the number of molding conditions outside the predetermined range with respect to the setting value of the molding condition of the comparison reference group, or either one For each group to be compared,
A display method for an injection molding machine, wherein the number of molding conditions within the predetermined range and / or the number of molding conditions outside the predetermined range are displayed in correspondence with the set to be compared. Two sets are selected by brute force method from some or all of N (N ≧ 2) sets consisting of set values of M molding conditions , and one is set as a comparison reference set and the other as a comparison set.
Comparing the setting value of the molding condition of the comparison reference group and the setting value of the molding condition of the comparison target group for each of the M molding conditions;
Either the number of molding conditions where the setting value of the molding condition of the comparison target group is within a predetermined range and the number of molding conditions outside the predetermined range with respect to the setting value of the molding condition of the comparison reference group, or either one For each group to be compared,
A display method for an injection molding machine, wherein either or both of a ratio of molding conditions within the predetermined range and a ratio of molding conditions outside the predetermined range are displayed in correspondence with the set to be compared. . The M molding conditions are classified into L (L ≧ 2) groups, and the setting value of the molding condition of the comparison reference set and the setting value of the molding condition of the comparison target group are grouped for each group. 6. The display method for an injection molding machine according to claim 4, wherein each of the molding conditions is compared.

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