Molding machine

Abstract

To provide a molding machine that allows easy viewing of change information related to items included in the molding conditions.SOLUTION: An injection molding machine includes a storage device 73 for storing change information related to multiple items included in the molding conditions, a display device 71 that displays a setting screen for setting set values for at least one of the multiple items, an input device 72 that accepts input of item selection operation to select one item from the items in the setting screen displayed in the display device 71, and a control device 78 that displays an item setting history screen overlaid on the setting screen on the display device 71, which includes a change information display section showing only the change information related to the item selected by the item selection operation.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a molding machine. [Background technology]

[0002] Patent Document 1 discloses an example of a conventional injection molding machine. The injection molding machine performs operations according to molding conditions to produce a molded product. The molding conditions include set values ​​that are set for items related to the driving of each driving unit of the injection molding machine (speed, pressure, temperature, time, travel distance, etc.). The injection molding machine has a screen (setting screen) for setting the set values. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-159481 Summary of the Invention [Problem to be solved by the invention]

[0004] For example, when replacing a mold in an injection molding machine with a new one, the operator performs a parameter setting operation using the injection molding machine. During parameter setting operation, prototype molded parts are molded while adjusting the setting values ​​until a molded part that meets the required specifications can be molded. The molding conditions obtained through parameter setting operation are used for the molded part that will become the final product.

[0005] In the setting operation, the operator inputs setting values ​​using a setting screen displayed on the display device. At this time, the operator may want to set new setting values ​​by referring to past setting values. In such cases, the operator can view past setting values ​​using a list of change information for multiple items included in the molding conditions (setting history screen) displayed on the display device. Figures 9 and 10 show examples of the setting screen Gs and the setting history screen Gr. In Figure 10, some of the details of the setting screen Gs are omitted.

[0006] However, because the relatively large setting history screen Gr is displayed over the setting screen Gs, the operator must view past setting values ​​on the setting history screen Gr, then close the setting history screen Gr and return to the setting screen Gs to input the setting values. Furthermore, the setting history screen Gr displays change information for multiple items included in the molding conditions, and the operator must find the change information for the item he or she is targeting. This makes the process of setting conditions cumbersome.

[0007] Therefore, an object of the present invention is to provide a molding machine that allows easy viewing of change information related to items included in molding conditions. [Means for solving the problem]

[0008] In order to achieve the above-mentioned object, the molding machine of the present invention is characterized by having a storage device in which change information relating to multiple items included in molding conditions is stored; a display device that displays a setting screen for setting a setting value for at least one of the multiple items; an input device into which an item selection operation is input to select one item from the items on the setting screen displayed on the display device; and a control device that displays a change information screen on the display device, superimposed on the setting screen, which displays only the change information relating to the item selected by the item selection operation. [Effects of the Invention]

[0009] According to the present invention, when an item to be set is selected on the setting screen, a change information screen that displays only change information related to the selected item among the multiple items included in the molding conditions is displayed overlaid on the setting screen. This makes it easy to view change information related to the item when setting a setting value for the item included in the molding conditions. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a diagram showing a schematic configuration of an injection molding machine according to an embodiment of the present invention; [Figure 2]FIG. 2 is a functional block diagram of the injection molding machine. [Figure 3] FIG. 10 is a diagram illustrating an example of an identification information table stored in a storage device of the injection molding machine. [Figure 4] FIG. 10 is a diagram illustrating an example of a change information table stored in a storage device of the injection molding machine. [Figure 5] FIG. 10 is a diagram showing a first example of an input screen and an item setting history screen displayed on the display device of the injection molding machine (when the change information display section is in a display state). [Figure 6] FIG. 10 is a diagram showing a first example of an input screen and an item setting history screen displayed on the display device of the injection molding machine (when the change information display section is in a non-display state). [Figure 7] 10A and 10B are diagrams showing a second example of an input screen and an item setting history screen displayed on the display device of the injection molding machine. [Figure 8] 10A and 10B are diagrams showing a third example of an input screen and an item setting history screen displayed on the display device of the injection molding machine. [Figure 9] FIG. 10 is a diagram showing an example of a setting screen displayed on a display device of the injection molding machine. [Figure 10] FIG. 10 is a diagram showing an example of a setting history screen displayed on a display device of the injection molding machine. DETAILED DESCRIPTION OF THE INVENTION

[0011] An injection molding machine according to one embodiment of the present invention will be described below with reference to Figures 1 to 10. The injection molding machine plasticizes a resin that is the material for a molded product and injects it into a cavity of a mold to form a molded product.

[0012] As shown in Fig. 1, the injection molding machine 1 according to this embodiment has a molding machine main body 10 including a mold clamping device 2, an injection device 3, and a removal device 4. The molding machine main body 10 is placed on a base 5. The injection molding machine 1 also has a control unit 7 that controls the molding machine main body 10.

[0013] The mold clamping device 2 opens, closes, and clamps a fixed mold 81 and a movable mold 82. The fixed mold 81 and the movable mold 82 form a cavity 83.

[0014] The mold clamping device 2 has a fixed die plate 21, a movable die plate 22, and a mold clamping drive mechanism 23. A fixed-side mold 81 is attached to the fixed die plate 21. A movable-side mold 82 is attached to the movable die plate 22. The mold clamping drive mechanism 23 has, for example, an electric motor, a ball screw mechanism, and a toggle link mechanism. The mold clamping drive mechanism 23 clamps the fixed-side mold 81 and the movable-side mold 82 in the front-to-rear direction (the left-to-right direction in FIG. 1) using the fixed die plate 21 and the movable die plate 22, thereby generating a mold clamping force.

[0015] The injection device 3 includes a cylinder 31, a nozzle 32, a resin supply unit 33, a heater , a screw 35, and a screw drive mechanism .

[0016] The cylinder 31 has a cylindrical shape. The cylinder 31 is arranged along the front-rear direction. The nozzle 32 is arranged at the front end of the cylinder 31. The resin supply unit 33 is arranged at the rear end of the cylinder 31. The resin supply unit 33 has a hopper that stores powdered or granular resin, which is the material for the molded product. The resin supply unit 33 supplies resin to the cylinder 31. The heater 34 is, for example, a band heater, and is arranged on the outer peripheral surface of the cylinder 31. The screw 35 is housed in the cylinder 31 so that it can rotate and move forward and backward. The screw drive mechanism 36 has, for example, an electric motor and a ball screw mechanism. The screw drive mechanism 36 rotates and moves the screw 35 forward and backward.

[0017] The removal device 4 has an ejector pin (not shown) and an ejection mechanism 41. The ejection mechanism 41 has, for example, an air cylinder. The ejection mechanism 41 drives the ejector pin to remove the molded product from the movable mold 82.

[0018] The control unit 7 controls the overall operation of the injection molding machine 1. As shown in FIG.

[0019] The display device 71 is, for example, a flat panel display such as a liquid crystal display.

[0020] The input device 72 is, for example, an operation key or a touch panel. The operation key is, for example, a key on a hardware keyboard. The touch panel is arranged over the display surface of the display device 71, and is combined with button images, toggle switch images, and the like displayed on the display surface to form software keys. Touching a location on the touch panel that corresponds to a button image or toggle switch image (such as tapping the image) corresponds to operating a software key, i.e., inputting an operation into the input device 72.

[0021] The storage device 73 is, for example, a magnetic disk device or a nonvolatile memory.

[0022] Molding conditions are stored in the storage device 73. The molding conditions include set values ​​that are set for items related to the driving of the clamping unit 2, the injection unit 3, the take-out unit 4, etc. of the injection molding machine 1 (speed, pressure, temperature, time, moving distance, etc.).

[0023] An identification information table Ti is stored in the storage device 73. The identification information table Ti includes identification information sets Ks that include identification information for identifying multiple items included in the molding conditions and related information thereof. Fig. 3 shows an example of the identification information table Ti that includes multiple identification information sets Ks.

[0024] The identification information set Ks includes identification information K1, name K2, unit K3, and input screen type K4. The identification information K1 is information for identifying multiple items included in the molding conditions and items of various control information used by the control device 78. A unique number (identification number) assigned to each item is set in the identification information K1. The name K2 is set to the name of the item identified by the identification number set in the identification information K1, the unit K3 is set to the unit of the setting value of the item, and the input screen type K4 is set to the type of input screen used to input the setting value of the item. When the item has no unit, the unit K3 is left blank. The input screen type K4 is set to "numeric keypad," "toggle switch," or "list."

[0025] The storage device 73 stores a change information table Th. The change information table Th includes change information sets Js related to a plurality of items included in the molding conditions. Fig. 4 shows an example of the change information table Th including a plurality of change information sets Js.

[0026] The change information set Js includes a number J1, identification information J2, a setting value before change J3, a setting value after change J4, a change time J5, and a user name J6. The identification information J2, the setting value before change J3, the setting value after change J4, the change time J5, and the user name J6 are all change information J.

[0027] The number J1 is set to a number indicating the order in which the change information set Js was added to the change information table Th. The identification information J2 is set to an identification number of the item related to the change information set Js. The setting value before change J3 is set to the setting value before the change. The setting value after change J4 is set to the setting value after the change (new setting value). The change time J5 is set to the date and time when the setting value was changed. The user name J6 is set to the login user name at the change time J5. The change information set Js may also include the number of shots at the change time J5. The number of shots is the number of molding operations performed in the injection molding machine 1 during a specified period. The number of shots is reset, for example, when the mold in the injection molding machine 1 is replaced with a new one, or when molding of the molded product to be the product begins.

[0028] The control device 78 includes a computer and is connected to the display device 71, the input device 72, and the storage device 73 so as to be able to communicate with each other.

[0029] The control device 78 displays various information on the display device 71 and performs operations according to operations input to the input device 72. The display device 71 and the input device 72 may be, for example, a tablet device or a laptop computer connected to the control device 78 via wireless communication.

[0030] The control device 78 is communicatively connected to the mold clamping drive mechanism 23, the heater 34, the screw drive mechanism 36, and the ejection mechanism 41. The control device 78 controls the mold clamping drive mechanism 23, the heater 34, the screw drive mechanism 36, the ejection mechanism 41, etc. based on the molding conditions stored in the storage device 73, and performs molding operations together with the molding machine main body 10.

[0031] When a new setting value is set for an item included in the molding conditions (i.e., when a setting value is changed), the control device 78 generates a change information set Js for that item and adds it to the beginning of the change information table Th (the top in FIG. 4). In the change information table Th shown in FIG. 4, the change information sets Js are arranged from top to bottom in order of change time J5 going back in time. The change information table Th can include, for example, 10,000 pieces of change information J. When a new setting value is set for an item included in the molding conditions when the change information table Th is fully filled, the control device 78 overwrites the oldest change information set Js with the new change information set Js.

[0032] The control unit 7 has a plurality of setting screens for setting items included in the molding conditions. When the operator inputs a predetermined setting screen display operation into the input device 72, the control device 78 displays a setting screen corresponding to the setting screen display operation on the display device 71. Figure 9 shows an example of a setting screen Gs for setting setting values ​​for items related to injection and plasticization. The setting screen Gs displays the current setting values ​​for the items related to injection and plasticization. Each item displayed on the setting screen Gs is associated with an identification number.

[0033] When the setting screen Gs is displayed on the display device 71 and the operator inputs an operation (item selection operation) to the input device 72 to select one item from the multiple items displayed on the setting screen Gs, the control device 78 displays an input screen for inputting a setting value to be set for the item selected by the item selection operation (selected item X) and an item setting history screen superimposed on the setting screen Gs.

[0034] Specifically, when an item selection operation is input, the control device 78 acquires the identification number of the selected item X and identifies the identification information set Ks in the identification information table Ti that includes the identification information K1 to which the identification number of the selected item X is set. The control device 78 then acquires the name K2 of the identified identification information set Ks as the name of the selected item X, acquires the unit K3 as the unit of the selected item X, and displays an input screen corresponding to the input screen type K4. At the same time, the control device 78 displays an item setting history screen that displays change information J related to the selected item X alongside the input screen.

[0035] Next, the input screen and the item setting history screen will be described with reference to Figures 5 to 9. In Figures 5 to 8, the setting screen Gs is partially omitted.

[0036] The setting screen Gs has an area (item Ia) that displays the setting value of, for example, "injection five-speed switching position" (FIG. 9). An identification number ("325") is associated with the item Ia. When an operation of tapping the item Ia (item selection operation) is input to the input device 72, the control device 78 acquires the identification number associated with the item Ia as the identification number of the selected item X. Based on the identification number, the control device 78 acquires "injection five-speed switching position" as the name of the selected item X from the identification information table Ti, acquires "mm" as the unit of the selected item X, and acquires "ten-key" as the type of the input screen. Then, as shown in FIG. 5, the control device 78 displays the input screen G11 and the item setting history screen G21 on the display device 71, superimposed on the setting screen Gs. The input screen G11 is of the "ten-key" type.

[0037] The input screen G11 has a title section G11a, a display section G11b, a slider section G11c, a numeric keypad section G11d, a reset button G11e, a confirm button G11f, and a delete button G11g.

[0038] The control device 78 displays the name of the selection item X in the title section G11a. When the input screen G11 is displayed, the control device 78 reads out the current setting value of the selection item X from the storage device 73 and displays it in the display section G11b.

[0039] The slider section G11c has a slider TB. When the input screen G11 is displayed, the control device 78 moves the slider TB to a position corresponding to the current setting value of the selection item X. When an operation to slide the slider TB to the left is input to the input device 72, the control device 78 decreases the value in the display section G11b, and when an operation to slide the slider TB to the right is input to the input device 72, the control device 78 increases the value in the display section G11b.

[0040] The numeric keys ("0" to "9", ".") and symbol keys ("*", " / ", "+", "-", "+ / -") included in the numeric keypad section G11d have the same functions as those of a general calculator. When a tapping operation on a numeric key is input to the input device 72, the control device 78 displays the numerical value corresponding to the numeric key on the display section G11b. When a tapping operation on a symbol key is input to the input device 72, the control device 78 performs processing to calculate a mathematical expression including the operation symbol corresponding to the symbol key.

[0041] When an operation of tapping the reset button G11e after operating the slider section G11c or the numeric keypad section G11d is input to the input device 72, the control device 78 returns the number on the display section G11b to the current setting value of the selection item X (the setting value immediately before the input screen G11 was displayed) and returns the slider TB to the position corresponding to the current setting value of the selection item X.

[0042] When a tap operation on the confirm button G11f is input to the input device 72, the control device 78 (i) calculates the calculation result and displays it on the display unit G11b if the value on the display unit G11b is not being calculated (corresponding to the "=" button on a calculator), and (ii) stores the value on the display unit G11b as a set value in the storage device 73 and erases the input screen G11 if the value on the display unit G11b is not being calculated. The control device 78 also erases the input screen G11 when a tap operation on the erase button G11g is input to the input device 72.

[0043] The item setting history screen G21 has a title section G21a, a change information name section G21b, a change information display section G21c, and a display / hide button G21d.

[0044] The control device 78 displays "Setting History" in the title section G21a, and displays "No.", "Date and Time", "Old", "New", and "Unit" in order from left to right in the change information name section G21b.

[0045] The control device 78 displays the change information J related to the selection item X in the change information display section G21c. Specifically, the control device 78 extracts a change information set Js from the change information table Th, which includes identification information J2 to which the identification number of the selection item X is set. The control device 78 displays a display information set Ls in the change information display section G21c, in which the change time J5, pre-change setting value J3, and post-change setting value J4 of the extracted change information set Js are arranged in order from left to right. In FIG. 5, the display information set Ls is surrounded by a dashed-dotted ellipse for ease of explanation, but the ellipse is not actually displayed. In the change information display section G21c, the change time J5, pre-change setting value J3, and post-change setting value J4 are arranged corresponding to the "date / time," "old," and "new" in the change information name section G21b. The control device 78 also displays each display information set Ls in order from the most recent change time J5 to the most recent from top to bottom. The change information display section G21c corresponds to a change information screen that displays only the change information J related to the selection item X among the multiple items included in the molding conditions. Note that "displaying only the change information J related to the selection item X among the multiple items included in the molding conditions" means that the change information J related to the items other than the selection item X among the multiple items included in the molding conditions is not displayed, and only the change information J related to the selection item X is displayed as the change information J.

[0046] The control device 78 displays numbers in ascending order, starting with the most recent change time J5, on the left side of each display information set Ls, and displays the unit of the selection item X on the right side of each display information set Ls. In the change information display section G21c, the numbers are arranged corresponding to the "No." in the change information name section G21b, and the unit of the selection item X is arranged corresponding to the "unit" in the change information name section G21b.

[0047] The control device 78 may be configured so that, when an operation of tapping the display information set Ls displayed in the change information display section G21c (change information selection operation) is input to the input device, the control device 78 regards the tapped display information set Ls as selected and displays the pre-change setting value J3 included in the display information set Ls on the display section G11b (i.e., sets it as a candidate setting value for the selection item X), or sets the pre-change setting value J3 included in the display information set Ls as the setting value for the selection item X (stores it in the storage device 73). In this way, the operator can set a past setting value for the selection item X with a relatively simple operation.

[0048] The show / hide button G21d is located in the title section G21a. The show / hide button G21d is a toggle switch that switches between showing and hiding the change information name section G21b and the change information display section G21c. When the change information name section G21b and the change information display section G21c are displayed, the control device 78 displays an upward-pointing triangle image as the show / hide button G21d (FIG. 5). When an operation of tapping the upward-pointing triangle image (screen non-display operation) is input to the input device 72, the control device 78 erases the change information name section G21b and the change information display section G21c and displays a downward-pointing triangle image as the show / hide button G21d (FIG. 6). When an operation of tapping the downward-pointing triangle image (screen display operation) is input to the input device 72, the control device 78 displays the change information name section G21b and the change information display section G21c and displays an upward-pointing triangle image as the show / hide button G21d.

[0049] When the input screen G11 is cleared, the control device 78 also clears the item setting history screen G21 at the same time.

[0050] The control device 78 may be configured to, when an operation of dragging the title section G11a of the input screen G11 (screen movement operation) is input to the input device 72, move only the input screen G11 or both the input screen G11 and the item setting history screen G21 on the setting screen Gs in accordance with the operation. Furthermore, the control device 78 may be configured to, when an operation of dragging the title section G21a of the item setting history screen G21 (screen movement operation) is input to the input device 72, move only the item setting history screen G21 or both the input screen G11 and the item setting history screen G21 on the setting screen Gs in accordance with the operation. In this way, the operator can move the input screen G11 or the item setting history screen G21 to view the area of ​​the setting screen Gs hidden by these screens.

[0051] The setting screen Gs includes a toggle switch image (item Ib) for inputting a setting value of, for example, "SRC-III" (FIG. 9). An identification number ("580") is associated with the item Ib. When an operation of tapping the item Ib (an item selection operation) is input to the input device 72, the control device 78 acquires the identification number associated with the item Ib as the identification number of the selected item X. The control device 78 acquires "SRC-III" as the name of the selected item X from the identification information table Ti based on the identification number, and acquires "toggle switch" as the type of the input screen. Then, as shown in FIG. 7, the control device 78 displays the input screen G12 and the item setting history screen G22 on the display device 71, superimposed on the setting screen Gs. The input screen G12 is of the "toggle switch" type.

[0052] When the input screen G12 is displayed on the display device 71, the control device 78 alternately switches the toggle switch image related to item Ib between an image of the ON state (Figure 7) and an image of the OFF state (Figure 9) each time an operation to tap item Ib is input to the input device 72.

[0053] The input screen G12 has a reset button G12e and a confirm button G12f.

[0054] When a tap operation on the reset button G12e is input to the input device 72, the control device 78 sets the toggle switch image related to the item Ib to the state it was in immediately before the input screen G12 was displayed.

[0055] When a tap operation on the confirmation button G12f is input to the input device 72, the control device 78 stores a setting value corresponding to the state (ON state, OFF state) of the toggle switch image in the storage device 73 and erases the input screen G12. Note that, when the input screen G12 is displayed and a tap operation on any position on the setting screen Gs is input to the input device, the control device 78 may erase the input screen G12.

[0056] The item setting history screen G22 has a title section G22a, a change information name section G22b, a change information display section G22c, and a show / hide button G22d. The item setting history screen G22 is the same as (including being substantially the same as) the item setting history screen G21 except that the change information name section G22b and the change information display section G22c do not display information related to the unit of the selected item X, and therefore a detailed description of the item setting history screen G22 will be omitted.

[0057] The setting screen Gs has an area (item Ic) that displays the setting value of, for example, "VP switching mode" (FIG. 9). An identification number ("102") is associated with the item Ic. When an operation of tapping the item Ic (item selection operation) is input to the input device 72, the control device 78 acquires the identification number associated with the item Ic as the identification number of the selected item X. Based on the identification number, the control device 78 acquires "VP switching mode" as the name of the selected item X from the identification information table Ti, and acquires "list" as the type of the input screen. Then, as shown in FIG. 8, the control device 78 displays the input screen G13 and the item setting history screen G23 on the display device 71, superimposed on the setting screen Gs. The input screen G13 is of the "list" type.

[0058] The input screen G13 has a title section G13a, a list section G13d, a confirm button G13f, and a delete button G13g.

[0059] The control device 78 displays the name of the selection item X in the title section G13a. The control device 78 displays a plurality of selection buttons G13d1 to G13d5 in the list section G13d. The plurality of selection buttons G13d1 to G13d5 correspond to setting values ​​that can be set for the selection item X. In the input screen G13, the plurality of selection buttons G13d1 to G13d5 correspond to "stroke switch," "pressure," "timer," "mold pressure," and "calculation (pressure switch)." When the input screen G13 is displayed, the control device 78 reads out the current setting value of the selection item X from the storage device 73 and highlights the setting button among the plurality of selection buttons G13d1 to G13d5 that corresponds to the current setting value. Furthermore, when an operation to tap one of the plurality of selection buttons G13d1 to G13d5 is input to the input device 72, the control device 78 highlights the selection button selected by that operation.

[0060] When a tap operation on the confirm button G13f is input to the input device 72, the control device 78 stores the setting value corresponding to the highlighted selection button in the storage device 73 and erases the input screen G13. The control device 78 also erases the input screen G13 when a tap operation on the erase button G13g is input to the input device 72.

[0061] The item setting history screen G23 has a title section G23a, a change information name section G23b, a change information display section G23c, and a show / hide button G23d. The item setting history screen G23 is the same as (including being substantially the same as) the item setting history screen G21, except that the change information name section G23b and the change information display section G23c do not display information related to the unit of the selected item X, and therefore a detailed description of the item setting history screen G23 will be omitted.

[0062] As described above, the injection molding machine 1 includes a molding machine main body 10 that molds a molded product and a control unit 7. The control unit 7 includes a storage device 73 that stores change information J related to multiple items included in the molding conditions, a display device 71 that displays a setting screen Gs for setting setting values ​​for the items included in the molding conditions, an input device 72 that receives an item selection operation to select one item from the items on the setting screen Gs displayed on the display device 71, and a control device 78 that displays an item setting history screen G21, including a change information display section G21c that displays only change information J related to the item selected by the item selection operation (selected item X), superimposed on the setting screen Gs on the display device 71. This configuration allows the operator to easily view the change information J related to an item included in the molding conditions when setting a setting value for that item.

[0063] Furthermore, the control device 78 displays an input screen G11 for inputting a setting value to be set for the selected item X together with the item setting history screen G21 on the display device 71, superimposed on the setting screen Gs. In this way, the operator can input a setting value while viewing past setting values ​​displayed on the item setting history screen G21.

[0064] Furthermore, when the control device 78 receives an operation to tap the display / hide button G21d of the item setting history screen G21 (screen hide operation) through the input device 72 while the input screen G11 and the item setting history screen G21 are displayed on the display device 71, the control device 78 continues to display the input screen G11 and hides the change information display section G21c of the item setting history screen G21. When the control device 78 receives an operation to tap the display / hide button G21d (screen display operation) through the input device 72 while the input screen G11 is displayed on the display device 71 and the change information display section G21c of the item setting history screen G21 is not displayed on the display device 71, the control device 78 displays the change information display section G21c on the display device 71. In this way, the operator can reduce the size of the item setting history screen G21 as necessary to widen the viewable area of ​​the setting screen Gs.

[0065] Furthermore, the change information J stored in the storage device 73 includes identification information J2 of the item related to the change information J, a pre-change setting value J3 which is the setting value before the change, a post-change setting value J4 which is the setting value after the change, and a change time J5 which is the time when the post-change setting value was set for the item. The change information J displayed in the change information display section G21c of the item setting history screen G21 includes the pre-change setting value J3, the post-change setting value J4, and the change time J5. It is sufficient that the change information J displayed in the change information display section G21c includes at least the pre-change setting value J3. In this way, the operator can view past setting values ​​that were set before the current setting value.

[0066] Furthermore, the change information display section G21c of the item setting history screen G21 displays multiple pieces of change information J in the order of change time J5. In this way, past setting values ​​of the selected item X can be checked in chronological order.

[0067] Although the present specification has described an injection molding machine according to an embodiment of the present invention, the present invention is not limited to injection molding machines and can also be applied to other types of molding machines such as die-casting machines.

[0068] Although the embodiments of the present invention have been described above, the present invention is not limited to these examples. Those skilled in the art may appropriately add, delete, or modify components of the above-described embodiments, or appropriately combine features of the embodiments, as long as they do not deviate from the spirit of the present invention. [Explanation of symbols]

[0069] 1... injection molding machine, 2... mold clamping device, 3... injection device, 4... removal device, 10... molding machine main body, 7... control unit, 71... display device, 72... input device, 73... storage device, 78... control device, G11 to G13... input screen, G21 to G23... item setting history screen, G21a to G23a... title section, G21b to G23b... change information name section, G21c to G23c... change information display section, G21d to G23d... show / hide button, Gs... setting screen

Claims

1. a storage device in which change information relating to a plurality of items included in the molding conditions is stored; a display device that displays a setting screen for setting a setting value for at least one item among the plurality of items; an input device for inputting an item selection operation to select one item from the items on the setting screen displayed on the display device; a control device that displays, on the display device, a change information screen that displays only the change information related to the item selected by the item selection operation, superimposed on the setting screen.

2. The molding machine according to claim 1, wherein the control device displays an input screen for inputting the setting value to be set for the item selected by the item selection operation on the display device, together with the change information screen, superimposed on the setting screen.

3. The control device when a screen hide operation is input to the input device while the input screen and the change information screen are displayed on the display device, the display of the input screen continues and the change information screen is hidden; 3. The molding machine according to claim 2, wherein when a screen display operation is input to the input device while the input screen is displayed on the display device and the change information screen is not displayed on the display device, the input screen and the change information screen are displayed on the display device.

4. the change information stored in the storage device includes identification information of the item related to the change information, a pre-change setting value which is the setting value before the change, a post-change setting value which is the setting value after the change, and a change time which is the time when the post-change setting value was set in the item, The molding machine according to claim 1 , wherein the change information displayed on the change information screen includes at least the pre-change setting value.

5. The molding machine according to claim 4 , wherein the change information screen displays a plurality of pieces of change information in order of the change time.

6. A molding machine as described in claim 4 or claim 5, wherein when a change information selection operation to select the change information displayed on the change information screen is input to the input device, the control device (i) sets the pre-change setting value included in the change information selected by the change information selection operation as a candidate for a new setting value for the item related to the change information, or (ii) sets the pre-change setting value for the item related to the change information as a new setting value.

7. The molding machine according to claim 1 , wherein when a screen movement operation is input to the input device, the control device moves the change information screen on the setting screen in accordance with the screen movement operation.

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