JP2005199593A - Injection molding machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify work for displaying the waveform of each action. <P>SOLUTION: An injection molding machine has operation parts 14 and 23, display parts 13 and 24, a recording part in which waveform display conditions for displaying the waveform of each action of the molding machine are recorded, and a waveform display processing means which reads the waveform display conditions from the recording part based on the operation of the operation parts 14 and 23, forms a waveform display scope on the display parts 13 and 24, and displays a waveform about a prescribed action on the waveform display scope according to the waveform display conditions. In this way, since the waveform display scope is formed on the display parts 13 and 24, and the waveform about the prescribed action is displayed on the waveform display scope according to the waveform display conditions, the work for displaying the waveform of each action can be simplified. As a result, molding conditions can be set easily while the displayed waveform is watched. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an injection molding machine.

  Conventionally, in a molding machine, for example, an injection molding machine, a resin heated and melted in a heating cylinder is injected at a high pressure to fill (cavate) the cavity space of the mold apparatus and cool in the cavity space. Then, the molded product is obtained by solidifying.

  The injection molding machine includes a mold clamping device, a mold device, and an injection device, and the mold clamping device includes a mold clamping motor such as a fixed platen, a movable platen, a motor, and a hydraulic cylinder, and the mold clamping motor. Thus, by moving the movable platen back and forth, the movable mold can be brought into and out of contact with the fixed mold, and the mold closing, mold clamping, and mold opening and closing can be performed.

  On the other hand, the injection device includes the heating cylinder that heats and melts the resin supplied from the hopper, the injection nozzle that injects the molten resin, an injection motor, a metering motor, and the like. The screw is disposed so as to be movable forward and backward and rotatable. The resin is injected from the injection nozzle by moving the screw forward by the injection motor, and the resin is measured by rotating the screw by the measuring motor.

By the way, in the injection molding machine having the above-described configuration, a molding machine monitor device is provided to display the transition of the screw position, injection / holding pressure, injection speed, etc. in correspondence with the elapsed time after the start of injection. (For example, refer patent document 1).
JP-A-6-238729

  However, in the conventional molding machine monitoring device, when the molding conditions are created and set by the operator, the operations such as mold opening / closing, weighing, injection, and protrusion cannot be displayed as waveforms.

  Accordingly, it is conceivable to display the waveform when molding is performed under the created molding conditions on the screen of the molding machine monitor device.

  However, when displaying the waveform for each operation, time is taken on the horizontal axis, but on the horizontal axis, it is necessary to set a trigger for starting waveform formation at a predetermined timing, that is, a waveform start trigger, On the vertical axis, it is necessary to select and set a predetermined variable among variables that change in each operation, and it is necessary to input these settings by operating the operation unit of the molding machine monitoring apparatus.

  For example, when creating molding conditions for mold opening / closing operations and displaying waveforms, it is necessary to set the timing for starting mold closing as the waveform start trigger on the horizontal axis and the mold opening speed on the vertical axis. . Also, when molding conditions are created for the weighing operation and the waveform is displayed, the timing to start weighing is set as the waveform start trigger on the horizontal axis, and the moving distance and rotation speed of the screw are set on the vertical axis. There is a need. Therefore, the setting operation for displaying the waveform is troublesome.

  An object of the present invention is to provide an injection molding machine that can solve the problems of the conventional molding machine monitoring device and can simplify the operation for displaying the waveform of each operation.

  Therefore, in the injection molding machine of the present invention, an operation unit, a display unit, a recording unit in which waveform display conditions for displaying waveforms for each operation of the molding machine are recorded, and the operation unit are operated. Based on this, the waveform display condition is read from the recording unit, a waveform display screen is formed on the display unit, and waveform display processing means for displaying a waveform of a predetermined operation according to the waveform display condition on the waveform display screen.

  The other injection molding machine of the present invention further includes a waveform display condition display processing means for forming a waveform setting screen on the display unit and displaying the waveform display condition on the waveform setting screen.

  In still another injection molding machine of the present invention, operation elements for forming a waveform setting screen for each operation are further displayed on the waveform display screen. And the said waveform display condition display process means displays the waveform display condition about predetermined | prescribed operation | movement based on operation of the said operation element on a waveform setting screen.

  In still another injection molding machine of the present invention, the waveform display conditions are further classified for each operation.

  Still another injection molding machine of the present invention further includes waveform display condition change processing means for changing and setting the waveform display condition on the waveform setting screen based on the operation of the operation unit.

  In still another injection molding machine of the present invention, an operation element for forming a molding condition setting screen for setting molding conditions for each operation is further displayed on the waveform display screen.

  In still another injection molding machine of the present invention, a molding condition setting screen for setting molding conditions for each operation is formed on the display unit, and molding conditions are displayed on the molding condition setting screen. Condition display processing means is included.

  And the operation element for forming the waveform display screen about each operation | movement is displayed on the said molding condition setting screen.

  In still another injection molding machine of the present invention, the waveform display processing means forms a waveform display screen for an operation corresponding to the formed molding condition setting screen on the display unit.

  According to the present invention, in an injection molding machine, an operation unit, a display unit, a recording unit in which waveform display conditions for displaying waveforms for each operation of the molding machine are recorded, and the operation unit are operated. Based on this, the waveform display condition is read from the recording unit, a waveform display screen is formed on the display unit, and waveform display processing means for displaying a waveform of a predetermined operation according to the waveform display condition on the waveform display screen.

  In this case, a waveform display screen is formed on the display unit, and a waveform for a predetermined operation is displayed on the waveform display screen in accordance with the waveform display condition. Therefore, the work for displaying the waveform of each operation is simplified. Can do.

  Therefore, the molding conditions can be easily set while viewing the displayed waveform.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In this case, an injection molding machine as a molding machine will be described.

  FIG. 2 is a block diagram showing a control device for an injection molding machine according to the embodiment of the present invention.

  In the figure, 11 is a molding machine controller for controlling the whole of the injection molding machine, 12 is an operation / display unit, and the operation / display unit 12 is composed of a touch panel and the like, a display unit 13 for forming a screen, and a key. And an operation unit 14 including buttons and the like.

  A personal computer 21 is connected to the molding machine controller 11 and the operation / display unit 12 as necessary. The personal computer 21 includes a control unit 22, an operation unit 23 including a keyboard and a mouse, a display, and a touch panel. The display part 24 which consists of etc. is provided. The control unit 22 includes a recording unit such as a CPU 26, a RAM 27, and a ROM 28. The molding machine controller 11, the control unit 22, and the CPU 26 function as a computer based on a predetermined program, predetermined data, and the like. When the display units 13 and 24 are formed by the touch panel, the display units 13 and 24 and the like function not only as a display unit but also as an operation unit.

  The injection molding machine has a mold clamping device, a mold device, and an injection device (not shown). The injection device is a heating cylinder as a cylinder member, and can be moved forward and backward in the heating cylinder, and can be rotated. A screw as an injection member provided, a metering motor as a metering drive unit, an injection motor as an injection drive unit, and the like are provided. The metering motor is driven during the metering step, the screw is rotated to advance while melting the resin as the molding material, and the screw is retracted accordingly. Further, during the injection process, the injection motor is driven to advance the screw and inject the resin.

  The mold apparatus includes a fixed mold as a first mold and a movable mold as a second mold. The mold clamping apparatus includes a fixed platen to which the fixed mold is attached, and the movable mold. A movable platen to which a mold is attached, and a mold clamping motor as a mold clamping drive unit for moving the movable platen forward and backward are provided. Further, by driving the mold clamping motor and moving the movable platen back and forth, the movable mold can be brought into and out of contact with the fixed mold, and the mold closing, mold clamping, and mold opening and closing can be performed. A cavity space is formed between the fixed mold and the movable mold as the mold is clamped, and the resin injected from the injection nozzle is filled in the cavity space.

  The resin filled in the cavity space is solidified as it is cooled to become a molded product. Further, when the mold is opened, a molded product is ejected by operating an ejector device (not shown) disposed on the movable platen. For this purpose, the ejector device includes an ejector motor, an ejector pin, and the like as a drive unit for protrusion.

  In the injection molding machine configured as described above, the operator can create and set molding conditions while operating the operation units 14 and 23 and viewing the display units 13 and 24. The molding machine controller 11, the operation / display unit 12, and the personal computer 21 constitute a molding machine monitoring device.

  Next, the operation of the control unit 22 when the operation unit 23 is operated to create and set the molding conditions on the molding condition setting screen formed on the display unit 24 will be described. The operation of the molding machine controller 11 when operating the operation unit 14 to create and set the molding conditions on the molding condition setting screen formed on the display unit 13 is the same as the operation of the control unit 22. Description is omitted.

  FIG. 1 is a diagram showing an example of a waveform display screen in the embodiment of the present invention, FIG. 3 is a diagram showing an example of a molding condition setting screen for the injection operation in the embodiment of the present invention, and FIG. It is a figure which shows the example of the waveform setting screen in embodiment.

  When the operator selects setting of molding conditions for the injection operation on the menu screen, molding condition display processing means (not shown) of the CPU 26 (FIG. 2) performs molding condition display processing, and the display unit 24 displays FIG. A molding condition setting screen as an operation setting screen for the injection operation as shown is formed, and the molding conditions for the injection operation are displayed on the molding condition setting screen. The molding condition setting screen includes a column p1 indicating the type of screen, a column p2 as a molding condition setting column for setting each molding condition in the injection process, and a column as a display screen switching column for shifting to another screen. p3 and the like. In the molding condition setting screen for injection operation shown in FIG. 3, that is, the “injection setting screen”, detailed molding conditions relating to plasticization can be set. For example, in the above-mentioned column p2, “filling position”, “filling pressure”, “filling time”, “filling speed”, etc. are set as filling condition settings, and “holding speed”, “holding pressure” are set as holding pressure conditions. Each condition such as “position” and “holding time” can be set. In addition, in the molding condition setting screen for the mold opening / closing operation (not shown), that is, the “mold opening / closing setting screen”, as the mold opening / closing condition setting, “mold opening position”, “mold opening speed”, “mold closing position”, Each condition such as “mold closing speed” can be set. In the molding condition setting screen for the protruding operation, that is, the “ejector setting screen”, as the protruding condition setting, “ejector protruding number”, “ejector protruding position” "Ejector protrusion time" and other conditions can be set. In the field p3, screens such as “setup”, “mold opening / closing”, “weighing”, “injection”, “protruding”, “waveform display”, “quality control”, “production control”, etc. are selected. Keys k1 to 8 as operation elements for displaying are displayed, and a predetermined screen can be formed on the display unit 24 by touching the predetermined key. For example, when the “die opening / closing setting screen” is formed and the key k4 is touched to select “injection”, the “injection setting screen” shown in FIG. 3 is displayed.

  By the way, the operator creates molding conditions by operating the operation unit 23 while looking at each molding condition setting screen for each operation such as mold opening / closing, weighing, injection, and protruding, but molding is performed under the created molding conditions. It is possible to display on the waveform display screen a waveform made up of the set values and the waveform made up of the actual values.

  For this purpose, when the waveform display is selected by touching the key k6 on each molding condition setting screen and selecting “waveform display”, the waveform display processing means (not shown) of the CPU 26 performs waveform display processing and is set on each molding condition setting screen. Each molding condition is read out from the RAM 27, and a waveform is created according to the waveform display condition in accordance with the molding condition setting screen, a waveform display screen is formed on the display unit 24, and various waveforms for each operation are displayed on the waveform display screen. Display the waveform. For example, as shown in FIG. 3, when the “injection setting screen” is formed, touching the key k6 displays a waveform related to the injection. Similarly, when the “mold open / close setting screen” is formed, touching the key k6 displays a waveform related to mold opening / closing.

  The waveform display screen includes a field p11 as a waveform display field for displaying a waveform, a field p12 as a horizontal axis detailed display field indicating the setting content for the waveform display condition on the horizontal axis, and a setting content for the waveform display condition on the vertical axis. A column p13 as a vertical axis detail display column indicating the waveform, a column p14 as a waveform setting screen calling column for calling a waveform setting screen for setting the waveform display for each operation, and a molding condition setting screen for each operation. A column p15 as a molding condition setting screen calling column for calling, columns p16, p17 for selecting other functions, and the like are provided.

In the column p12, a mark m1 indicating the position of the waveform start trigger for starting the waveform formation, and waveform numbers CH1 to CH8 for each operation (indicated simply as 1 to 8 in FIG. 1). The name m2 of the operation that is started by each waveform start trigger for each waveform represented by (2) and the measurement time m3 set on the horizontal axis are displayed for each waveform. In the waveform display screen for the injection operation shown in FIG. 1, the name m2 is not used, the waveform start trigger is “filling start”, and the measurement time m3 is 5.0 [sec]. In p13, numbers CH1 to CH8 (numbers CH5 to CH8 are not used in the operation of injection), variable items represented on the vertical axis for each waveform, and each item are set and specified in the specifications of the injection molding machine The scale that represents the range of the enlargement ratio or reduction ratio (both as a percentage) for displaying the waveform by enlarging or reducing in the vertical direction with respect to the standard value is 100 [%]. Is displayed. Therefore, the standard waveform can be expressed in the range of 100 [%] to -100 [%], and 100 and -100 [%] are the maximum value and the minimum value of the specification of the injection molding machine. The enlarged waveform can be expressed, for example, in the range of 200 [%] to -200 [%], and the reduced waveform is expressed, for example, in the range of 50 [%] to -50 [%]. be able to. Note that the scale takes a positive value above the center and a negative value below the center when the center of the column p11 is set to 0 [%].

  In the injection operation, the “speed setting” of the waveform of the number CH1 is an item representing the set value of the injection speed, the waveform scale is set in the range of 200 [%] to −200 [%], and the waveform of the number CH2 “Speed detection” is an item representing the actual value of the injection speed, the waveform scale is in the range of 200% to −200%, and the “screw position” of the waveform with the number CH3 is the screw This is an item representing the position, and the waveform scale is in the range of 50 [%] to -50 [%], and the “injection torque” in the waveform of the number CH4 is an item representing the torque of the injection motor, and the waveform scale. Is in the range of 25 [%] to -25 [%].

  In the present embodiment, regarding the operation of injection, on the vertical axis, each item of “speed setting”, “speed detection”, “screw position”, and “injection torque” is set, and a waveform for each item is displayed. However, “holding pressure setting” can be set as an item representing the set value of the holding pressure, and “holding pressure detection” can be set as an item representing the actual value of the holding pressure.

  The column p14 displays keys k11 to k14 as operation elements for forming a waveform setting screen for each operation, and the column p15 is an operation element for forming a molding condition setting screen for each operation. Keys k21 to k24 are displayed.

  Therefore, when the operator touches the key k22, for example, an injection setting screen as shown in FIG. When the key k12 is touched, the waveform display condition display processing means (not shown) of the CPU 26 creates a waveform setting screen for the injection operation as shown in FIG. Waveform display conditions for displaying each waveform on the waveform display screen are displayed on the screen. The names of the keys k11 to k14 can be changed to arbitrary names by the operator.

  The waveform setting screen includes a field p21 as a setting display field for displaying the name of the operation for which the waveform is set, a field p22 as a number display field for displaying the number set in the mold apparatus, and the like, molding conditions A column p23 as a molding condition name display column for displaying the name of the column, a column p24 as a horizontal axis detailed display column for displaying or changing the setting contents of the waveform display condition on the horizontal axis, and a waveform display on the vertical axis A column p25 as a vertical axis detail display column for displaying or changing the setting contents of the condition is provided. The column p21 is displayed in conjunction with the key k21 shown in FIG. 1, the column p24 is linked with the column p12, and the column p25 is linked with the column p13.

  The column p24 displays each waveform start trigger (TRIG) and each measurement time for the waveform numbers CH1 to CH4 and CH5 to CH8, and the column p25 displays items and variables for the waveform numbers CH1 to CH8. A scale is displayed, and each waveform start trigger, measurement time, item, and variable scale are arbitrarily changed by the operator. The waveform setting screen includes an operation element for invalidating the operation by the operator, a cancel key k31 as an invalid element, and an operation element for approving an input item, and An OK key k32 as an approval element is displayed. When the operator touches the OK key k32, the molding condition display processing means forms a molding condition setting screen with the setting contents displayed on the waveform setting screen. When the operator changes the waveform display condition displayed on the waveform setting screen and touches the OK key k32, the waveform display condition change processing means (not shown) of the CPU 26 performs the waveform display condition change processing to change the changed waveform. Set the display conditions.

  In the present embodiment, the case where the waveform of each item is displayed for the injection operation has been described, but the waveform of a predetermined item can be displayed for each operation such as mold opening / closing, weighing, and protruding. For example, with regard to the mold opening / closing operation, “clamping setting” representing the set value of the mold clamping force, “mold clamping detection” representing the actual value of the mold clamping force, and “clamping torque” representing the torque of the mold clamping motor. “Clamping position” representing the clamping position, “Clamping speed setting” representing the setting value of the clamping speed, “Clamping speed detection” representing the actual value of the clamping speed, and “Crosshead” representing the position of the crosshead. ”For each item, and for the weighing operation,“ Back pressure setting ”that represents the back pressure setting value,“ Back pressure detection ”that represents the actual back pressure value, and the rotational speed setting value of the weighing motor Set “Rotation setting” to indicate “Rotation detection” to indicate the actual value of the rotation speed of the weighing motor, “Rotation torque” to indicate the torque of the weighing motor, and “Screw position” to indicate the screw position. For the protrusion operation, “EJ” represents the detection of the ejector pin protrusion speed. Degrees Detection "," EJ position representing a protruding speed of Eekutapin "represents the torque of the motor for the ejector or can set each item such as" EJ torque ".

  In the present embodiment, touching the key k6 on the molding condition setting screen for each operation and selecting “waveform display” forms a waveform display screen for the corresponding operation. In the waveform display screen, When a predetermined operation is selected by touching the keys k11 to k14, a waveform setting screen for the selected operation is formed. The predetermined operation is selected by touching the keys k11 to k14. Subsequently, with respect to the operation of the molding condition setting screen before the waveform display screen is formed, a waveform setting screen corresponding to the molding condition setting screen can be automatically formed.

  For example, when the key k6 is touched on the molding condition setting screen for the mold opening / closing operation, the waveform display screen for the mold opening / closing operation is formed corresponding to the molding condition setting screen. At this time, the key k11 is touched. Then, the waveform setting screen for the mold opening / closing operation can be automatically formed.

  Then, on the molding condition setting screen for each operation, when a predetermined set value is changed and the waveform display screen is displayed, the corresponding waveform setting screen can be automatically displayed.

  Further, the recording processing means (not shown) of the CPU 26 performs recording processing, and classifies the waveform display conditions set on the waveform setting screen in correspondence with the molding conditions for each operation for each mold device, Recorded in the RAM 27. A plurality of waveform display conditions can be recorded for each operation. When a predetermined key among the keys k11 to k14 is repeatedly pressed, each waveform display condition is read in order from the new waveform display condition, and the waveform setting screen is displayed. Can be displayed.

  As described above, the waveform display condition for each operation is read from the RAM 27, and the waveform of each operation is displayed according to the waveform display condition. Therefore, the operation for displaying the waveform of each operation can be simplified.

  In addition, a waveform setting screen is formed by touching the keys k11 to k14, and settings for displaying a waveform of a predetermined operation can be performed collectively by simply inputting predetermined items on the waveform setting screen. it can. Therefore, the work for that purpose can be further simplified.

  As a result, molding conditions can be easily set while viewing the displayed waveform.

  In addition, as the waveform setting screen is moved from the molding condition setting screen, a waveform setting screen corresponding to the molding condition setting screen is automatically formed, and items set on the waveform setting screen are displayed. The setting for displaying the waveform of the operation can be easily changed.

  In addition, this invention is not limited to the said embodiment, It can change variously based on the meaning of this invention, and does not exclude them from the scope of the present invention.

It is a figure which shows the example of the waveform display screen in embodiment of this invention. It is a block diagram which shows the control apparatus of the injection molding machine in embodiment of this invention. It is a figure which shows the example of the molding condition setting screen about the operation | movement of injection in embodiment of this invention. It is a figure which shows the example of the waveform setting screen in embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Molding machine controller 12 Operation / display unit 13, 24 Display part 14, 23 Operation part 21 Personal computer 22 Control part 26 CPU
27 RAM
28 ROM
k1-k8, k11-k14, k21-k24 keys

Claims (8)

(A) an operation unit;
(B) a display unit;
(C) a recording unit in which waveform display conditions for displaying a waveform for each operation of the molding machine are recorded;
(D) Reading waveform display conditions from the recording unit based on the operation of the operation unit, forming a waveform display screen on the display unit, and displaying a waveform for a predetermined operation in accordance with the waveform display conditions on the waveform display screen An injection molding machine comprising: a waveform display processing means.   The injection molding machine according to claim 1, further comprising a waveform display condition display processing unit configured to form a waveform setting screen on the display unit and display the waveform display conditions on the waveform setting screen. (A) Operation elements for forming a waveform setting screen for each operation are displayed on the waveform display screen,
(B) The injection molding machine according to claim 2, wherein the waveform display condition display processing means displays a waveform display condition for a predetermined operation on the waveform setting screen based on an operation of the operation element.   The injection molding machine according to claim 1, wherein each waveform display condition is categorized for each operation.   The injection molding machine according to claim 2, further comprising a waveform display condition change processing unit configured to change and set a waveform display condition on the waveform setting screen based on an operation of the operation unit.   The injection molding machine according to claim 1, wherein an operation element for forming a molding condition setting screen for setting molding conditions for each operation is displayed on the waveform display screen. (A) forming a molding condition setting screen for setting molding conditions for each operation on the display unit, and having molding condition display processing means for displaying the molding conditions on the molding condition setting screen;
(B) The injection molding machine according to claim 1, wherein operation elements for forming a waveform display screen for each operation are displayed on the molding condition setting screen. The injection molding machine according to claim 7, wherein the waveform display processing means forms a waveform display screen for an operation corresponding to the formed molding condition setting screen on the display unit.

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