Control device for injection molding machine, injection molding machine, control method for injection molding machine, and program

Abstract

To improve productivity by efficiently performing start of molding in an injection molding machine.SOLUTION: A controller for an injection molding machine comprises: an output unit that outputs a screen including an input field for a completion time at which a temperature rise of a temperature control member whose temperature is controlled by the injection molding machine is completed; and a reception unit that receives an input of a timer completion time in a timer input field.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a control device for an injection molding machine, an injection molding machine, a control method for an injection molding machine, and a program.

Background Art

[0002] An injection molding machine includes a cylinder to which resin pellets as a molding material are supplied, and a heater that heats the cylinder to melt the resin pellets. The injection molding machine manufactures a molded product by melting the resin pellets in the cylinder and filling the molten resin into a cavity space in a mold device.

[0003] Regarding heater control for melting resin pellets in an injection molding machine, various proposals have been made. For example, in the technique described in Patent Document 1, since it takes time from starting the temperature increase by heater control until molding becomes possible, a technique for setting the operation start time with a timer has been proposed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the technique described in Patent Document 1, when a user wants to perform molding, it is necessary to set the start time of the temperature increase in consideration of the time required for the temperature increase to be completed. Thus, in setting the start time of the temperature increase, the convenience in use, such as the need for the user to predict the completion time of the temperature increase, is reduced.

[0006] One aspect of the present invention provides a technique for improving the efficiency of starting molding by enabling acceptance of an input of the completion time of the temperature increase and controlling the temperature increase member to complete the temperature increase at the input completion time.

Means for Solving the Problem

[0007] A control device for an injection molding machine according to an aspect of the present invention includes an output unit that outputs a screen including an input field for the completion time when the temperature rise of a temperature control member that is temperature-controlled by the injection molding machine is completed, and a reception unit that receives an input of the timer completion time for the timer input field, A heating control unit that adjusts the start time of heating by a heating unit provided for each zone according to the heating rate for each zone that divides the section in which temperature control is performed in the temperature control member so that the temperature rise is completed at the completion time; and is provided with .

Advantages of the Invention

[0008] According to an aspect of the present invention, since it is possible to receive an input of the completion time of the temperature rise, by controlling so that the temperature rise of the temperature control member is completed at the input completion time, it is possible to suppress the idling from when the temperature rise is completed until the operator starts work, and it is possible to suppress the situation where the temperature rise is not completed when the operator is at the site. Therefore, the start of molding can be made more efficient and productivity can be improved.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

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Figure 9

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding components are denoted by the same or corresponding reference numerals, and the description thereof may be omitted.

[0011] FIG. 1 is a diagram showing the state of the injection molding machine at the completion of mold opening according to the first embodiment. FIG. 2 is a diagram showing the state of the injection molding machine at the time of mold clamping according to the first embodiment. In this specification, the X-axis direction, the Y-axis direction, and the Z-axis direction are perpendicular to each other. The X-axis direction and the Y-axis direction represent the horizontal direction, and the Z-axis direction represents the vertical direction. When the mold clamping device 100 is a horizontal mold, the X-axis direction is the mold opening / closing direction, and the Y-axis direction is the width direction of the injection molding machine 10. The negative side in the Y-axis direction is called the operation side, and the positive side in the Y-axis direction is called the non-operation side.

[0012] As shown in FIGS. 1 to 2, the injection molding machine 10 includes a mold clamping device 100 for opening and closing a mold device 800, an ejector device 200 for ejecting a molded product formed by the mold device 800, an injection device 300 for injecting a molding material into the mold device 800, a moving device 400 for moving the injection device 300 forward and backward with respect to the mold device 800, a control device 700 for controlling each component of the injection molding machine 10, and a frame 900 for supporting each component of the injection molding machine 10. The frame 900 includes a mold clamping device frame 910 for supporting the mold clamping device 100 and an injection device frame 920 for supporting the injection device 300. The mold clamping device frame 910 and the injection device frame 920 are each installed on the floor 2 via a leveling adjuster 930. The control device 700 is disposed in the internal space of the injection device frame 920. Hereinafter, each component of the injection molding machine 10 will be described.

[0013] (Mold clamping device) In the description of the mold clamping device 100, the moving direction of the movable platen 120 at the time of mold closing (for example, the positive X-axis direction) is defined as the front, and the moving direction of the movable platen 120 at the time of mold opening (for example, the negative X-axis direction) is defined as the rear for description.

[0014] The mold clamping device 100 performs mold closing, pressure boosting, mold clamping, pressure release, and mold opening of the mold device 800. The mold device 800 includes a fixed mold 810 and a movable mold 820.

[0015] The mold clamping device 100 is, for example, a horizontal type, and the mold opening and closing direction is a horizontal direction. The mold clamping device 100 includes a fixed platen 110 to which the fixed mold 810 is attached, a movable platen 120 to which the movable mold 820 is attached, and a moving mechanism 102 for moving the movable platen 120 in the mold opening and closing direction with respect to the fixed platen 110.

[0016] The fixed platen 110 is fixed to the mold clamping device frame 910. The fixed mold 810 is attached to the opposing surface of the fixed platen 110 with the movable platen 120.

[0017] The movable platen 120 is arranged to be movable in the mold opening and closing direction with respect to the mold clamping device frame 910. A guide 101 for guiding the movable platen 120 is laid on the mold clamping device frame 910. A movable mold 820 is attached to the opposing surface of the movable platen 120 facing the fixed platen 110.

[0018] The moving mechanism 102 performs mold closing, pressure boosting, mold clamping, pressure release, and mold opening of the mold device 800 by advancing and retracting the movable platen 120 with respect to the fixed platen 110. The moving mechanism 102 includes a toggle support 130 arranged at a distance from the fixed platen 110, a tie bar 140 connecting the fixed platen 110 and the toggle support 130, a toggle mechanism 150 for moving the movable platen 120 in the mold opening and closing direction with respect to the toggle support 130, a mold clamping motor 160 for operating the toggle mechanism 150, a motion conversion mechanism 170 for converting the rotational motion of the mold clamping motor 160 into linear motion, and a mold thickness adjustment mechanism 180 for adjusting the distance between the fixed platen 110 and the toggle support 130.

[0019] The toggle support 130 is arranged at a distance from the fixed platen 110 and is placed movably in the mold opening and closing direction on the mold clamping device frame 910. Note that the toggle support 130 may be arranged to be movable along a guide laid on the mold clamping device frame 910. The guide of the toggle support 130 may be common with the guide 101 of the movable platen 120.

[0020] In this embodiment, the fixed platen 110 is fixed with respect to the mold clamping device frame 910, and the toggle support 130 is arranged to be movable in the mold opening and closing direction with respect to the mold clamping device frame 910. However, the toggle support 130 may be fixed with respect to the mold clamping device frame 910, and the fixed platen 110 may be arranged to be movable in the mold opening and closing direction with respect to the mold clamping device frame 910.

[0021] The tie bar 140 connects the fixed platen 110 and the toggle support 130 with a spacing L in the mold opening and closing direction. Multiple (for example, four) tie bars 140 may be used. The multiple tie bars 140 are arranged in parallel in the mold opening and closing direction and extend according to the clamping force. At least one tie bar 140 may be provided with a tie bar strain detector 141 for detecting the strain of the tie bar 140. The tie bar strain detector 141 sends a signal indicating its detection result to the control device 700. The detection result of the tie bar strain detector 141 is used for detecting the clamping force and the like.

[0022] In this embodiment, the tie bar strain detector 141 is used as the clamping force detector for detecting the clamping force, but the present invention is not limited thereto. The clamping force detector is not limited to the strain gauge type, and may be a piezoelectric type, a capacitive type, a hydraulic type, an electromagnetic type, etc., and its mounting position is not limited to the tie bar 140.

[0023] The toggle mechanism 150 is arranged between the movable platen 120 and the toggle support 130, and moves the movable platen 120 in the mold opening and closing direction with respect to the toggle support 130. The toggle mechanism 150 has a crosshead 151 that moves in the mold opening and closing direction and a pair of link groups that flex by the movement of the crosshead 151. Each of the pair of link groups has a first link 152 and a second link 153 that are flexibly connected by a pin or the like. The first link 152 is swingably attached to the movable platen 120 by a pin or the like. The second link 153 is swingably attached to the toggle support 130 by a pin or the like. The second link 153 is attached to the crosshead 151 via a third link 154. When the crosshead 151 is advanced and retracted with respect to the toggle support 130, the first link 152 and the second link 153 flex, and the movable platen 120 advances and retracts with respect to the toggle support 130.

[0024] Note that the configuration of the toggle mechanism 150 is not limited to the configuration shown in FIGS. 1 and 2. For example, in FIGS. 1 and 2, the number of nodes of each link group is five, but it may be four, and one end of the third link 154 may be coupled to the node between the first link 152 and the second link 153.

[0025] The clamping motor 160 is attached to the toggle support 130 and actuates the toggle mechanism 150. By moving the crosshead 151 forward and backward with respect to the toggle support 130, the clamping motor 160 flexes the first link 152 and the second link 153, and moves the movable platen 120 forward and backward with respect to the toggle support 130. The clamping motor 160 is directly connected to the motion conversion mechanism 170, but may also be connected to the motion conversion mechanism 170 via a belt, pulley, or the like.

[0026] The motion conversion mechanism 170 converts the rotational motion of the clamping motor 160 into the linear motion of the crosshead 151. The motion conversion mechanism 170 includes a screw shaft and a screw nut that engages with the screw shaft. Balls or rollers may be interposed between the screw shaft and the screw nut.

[0027] The clamping device 100 performs a mold closing process, a pressure boosting process, a clamping process, a pressure releasing process, a mold opening process, and the like under the control of the control device 700.

[0028] In the mold closing process, the clamping motor 160 is driven to move the crosshead 151 forward to the mold closing completion position at a set moving speed, thereby moving the movable platen 120 forward and touching the movable mold 820 against the fixed mold 810. The position and moving speed of the crosshead 151 are detected using, for example, the clamping motor encoder 161. The clamping motor encoder 161 detects the rotation of the clamping motor 160 and sends a signal indicating the detection result to the control device 700.

[0029] Note that the crosshead position detector for detecting the position of the crosshead 151 and the crosshead moving speed detector for detecting the moving speed of the crosshead 151 are not limited to the clamping motor encoder 161, and general ones can be used. Also, the movable platen position detector for detecting the position of the movable platen 120 and the movable platen moving speed detector for detecting the moving speed of the movable platen 120 are not limited to the clamping motor encoder 161, and general ones can be used.

[0030] In the pressure boosting process, the clamping motor 160 is further driven to further advance the crosshead 151 from the mold closing completion position to the clamping position, thereby generating a clamping force.

[0031] In the clamping process, the clamping motor 160 is driven to maintain the position of the crosshead 151 at the clamping position. In the clamping process, the clamping force generated in the pressure boosting process is maintained. In the clamping process, a cavity space 801 (see FIG. 2) is formed between the movable mold 820 and the fixed mold 810, and the injection device 300 fills the cavity space 801 with a liquid molding material. By solidifying the filled molding material, a molded product is obtained.

[0032] The number of cavity spaces 801 may be one or more. In the latter case, a plurality of molded products can be obtained simultaneously. An insert material may be arranged in a part of the cavity space 801, and a molding material may be filled in another part of the cavity space 801. A molded product in which the insert material and the molding material are integrated is obtained.

[0033] In the pressure release process, the clamping motor 160 is driven to retract the crosshead 151 from the clamping position to the mold opening start position, thereby retracting the movable platen 120 and reducing the clamping force. The mold opening start position and the mold closing completion position may be the same position.

[0034] In the mold opening process, the clamping motor 160 is driven to retract the crosshead 151 from the mold opening start position to the mold opening completion position at a set moving speed, thereby retracting the movable platen 120 and separating the movable mold 820 from the fixed mold 810. Then, the ejector device 200 ejects the molded product from the movable mold 820.

[0035] The setting conditions in the mold closing process, pressure boosting process, and mold clamping process are set together as a series of setting conditions. For example, the moving speed and position of the crosshead 151 in the mold closing process and pressure boosting process (including the mold closing start position, moving speed switching position, mold closing completion position, and mold clamping position), and the mold clamping force are set together as a series of setting conditions. The mold closing start position, moving speed switching position, mold closing completion position, and mold clamping position are arranged in this order from the rear to the front, and represent the start and end points of the section where the moving speed is set. The moving speed is set for each section. The moving speed switching position may be one or more. The moving speed switching position may not be set. Either the mold clamping position or the mold clamping force may be set alone.

[0036] The setting conditions in the pressure release process and mold opening process are set in the same way. For example, the moving speed and position of the crosshead 151 in the pressure release process and mold opening process (the mold opening start position, moving speed switching position, and mold opening completion position) are set together as a series of setting conditions. The mold opening start position, moving speed switching position, and mold opening completion position are arranged in this order from the front to the rear, and represent the start and end points of the section where the moving speed is set. The moving speed is set for each section. The moving speed switching position may be one or more. The moving speed switching position may not be set. The mold opening start position and the mold closing completion position may be the same position. Also, the mold opening completion position and the mold closing start position may be the same position.

[0037] Note that instead of the moving speed and position of the crosshead 151, etc., the moving speed and position of the movable platen 120, etc. may be set. Also, instead of the position of the crosshead (for example, the mold clamping position) and the position of the movable platen, the mold clamping force may be set.

[0038] Incidentally, the toggle mechanism 150 amplifies the driving force of the clamping motor 160 and transmits it to the movable platen 120. The amplification factor is also called the toggle ratio. The toggle ratio changes according to the angle θ formed by the first link 152 and the second link 153 (hereinafter also referred to as the "link angle θ"). The link angle θ is obtained from the position of the crosshead 151. When the link angle θ is 180°, the toggle ratio becomes maximum.

[0039] When the thickness of the mold device 800 changes due to the replacement of the mold device 800 or the temperature change of the mold device 800, etc., mold thickness adjustment is performed so that a predetermined clamping force can be obtained during clamping. In the mold thickness adjustment, for example, the distance L between the fixed platen 110 and the toggle support 130 is adjusted so that the link angle θ of the toggle mechanism 150 becomes a predetermined angle at the time of mold touch where the movable mold 820 touches the fixed mold 810.

[0040] The clamping device 100 has a mold thickness adjustment mechanism 180. The mold thickness adjustment mechanism 180 performs mold thickness adjustment by adjusting the distance L between the fixed platen 110 and the toggle support 130. Note that the timing of the mold thickness adjustment is performed, for example, between the end of the molding cycle and the start of the next molding cycle. The mold thickness adjustment mechanism 180 includes, for example, a screw shaft 181 formed at the rear end of the tie bar 140, a screw nut 182 rotatably and non - axially movablely held by the toggle support 130, and a mold thickness adjustment motor 183 that rotates the screw nut 182 screwed to the screw shaft 181.

[0041] The screw shaft 181 and the screw nut 182 are provided for each tie bar 140. The rotational driving force of the mold thickness adjustment motor 183 may be transmitted to a plurality of screw nuts 182 via the rotational driving force transmission unit 185. The plurality of screw nuts 182 can be rotated synchronously. Note that it is also possible to rotate the plurality of screw nuts 182 individually by changing the transmission path of the rotational driving force transmission unit 185.

[0042] The rotational driving force transmission part 185 is composed of, for example, gears. In this case, a driven gear is formed on the outer periphery of each screw nut 182, a driving gear is attached to the output shaft of the mold thickness adjustment motor 183, and an intermediate gear meshing with a plurality of driven gears and the driving gear is rotatably held at the center of the toggle support 130. Note that the rotational driving force transmission part 185 may be composed of a belt, a pulley, or the like instead of gears.

[0043] The operation of the mold thickness adjustment mechanism 180 is controlled by the control device 700. The control device 700 drives the mold thickness adjustment motor 183 to rotate the screw nut 182. As a result, the position of the toggle support 130 with respect to the tie bar 140 is adjusted, and the interval L between the fixed platen 110 and the toggle support 130 is adjusted. Note that a plurality of mold thickness adjustment mechanisms may be used in combination.

[0044] The interval L is detected using the mold thickness adjustment motor encoder 184. The mold thickness adjustment motor encoder 184 detects the rotation amount and rotation direction of the mold thickness adjustment motor 183, and sends a signal indicating the detection result to the control device 700. The detection result of the mold thickness adjustment motor encoder 184 is used for monitoring and controlling the position of the toggle support 130 and the interval L. Note that the toggle support position detector for detecting the position of the toggle support 130 and the interval detector for detecting the interval L are not limited to the mold thickness adjustment motor encoder 184, and general ones can be used.

[0045] The mold clamping device 100 may have a mold temperature controller for adjusting the temperature of the mold device 800. The mold device 800 has a flow path for a temperature control medium inside. The mold temperature controller adjusts the temperature of the mold device 800 by adjusting the temperature of the temperature control medium supplied to the flow path of the mold device 800.

[0046] Note that the mold clamping device 100 of this embodiment is a horizontal mold in which the mold opening and closing direction is horizontal, but it may also be a vertical mold in which the mold opening and closing direction is vertical.

[0047] Note that the mold clamping device 100 of this embodiment has a mold clamping motor 160 as a drive source, but it may have a hydraulic cylinder instead of the mold clamping motor 160. Further, the mold clamping device 100 may have a linear motor for mold opening and closing and an electromagnet for mold clamping.

[0048] (Ejector device) In the description of the ejector device 200, similar to the description of the mold clamping device 100, the moving direction of the movable platen 120 at the time of mold closing (for example, the positive X-axis direction) is defined as the front, and the moving direction of the movable platen 120 at the time of mold opening (for example, the negative X-axis direction) is defined as the rear for the description.

[0049] The ejector device 200 is attached to the movable platen 120 and moves forward and backward together with the movable platen 120. The ejector device 200 has an ejector rod 210 that protrudes a molded product from the mold device 800 and a drive mechanism 220 that moves the ejector rod 210 in the moving direction (X-axis direction) of the movable platen 120.

[0050] The ejector rod 210 is disposed in the through hole of the movable platen 120 so as to be movable forward and backward. The front end of the ejector rod 210 contacts the ejector plate 826 of the movable mold 820. The front end of the ejector rod 210 may or may not be connected to the ejector plate 826.

[0051] The drive mechanism 220 has, for example, an ejector motor and a motion conversion mechanism that converts the rotational motion of the ejector motor into the linear motion of the ejector rod 210. The motion conversion mechanism includes a screw shaft and a screw nut that is screwed onto the screw shaft. A ball or a roller may be interposed between the screw shaft and the screw nut.

[0052] The ejector device 200 performs a protruding process under the control of the control device 700. In the protruding process, the ejector rod 210 is advanced from the standby position to the protruding position at a set moving speed, thereby advancing the ejector plate 826 and protruding the molded product. Thereafter, the ejector motor is driven to retract the ejector rod 210 at the set moving speed, and the ejector plate 826 is retracted to the original standby position.

[0053] The position and moving speed of the ejector rod 210 are detected using, for example, an ejector motor encoder. The ejector motor encoder detects the rotation of the ejector motor and sends a signal indicating the detection result to the control device 700. Note that the ejector rod position detector for detecting the position of the ejector rod 210 and the ejector rod moving speed detector for detecting the moving speed of the ejector rod 210 are not limited to the ejector motor encoder, and general ones can be used.

[0054] (Injection device) In the description of the injection device 300, unlike the description of the mold clamping device 100 and the ejector device 200, the moving direction of the screw 330 during filling (for example, the negative X-axis direction) is defined as the front, and the moving direction of the screw 330 during metering (for example, the positive X-axis direction) is defined as the rear for the description.

[0055] The injection device 300 is installed on the slide base 301, and the slide base 301 is arranged to be movable forward and backward with respect to the injection device frame 920. The injection device 300 is arranged to be movable forward and backward with respect to the mold device 800. The injection device 300 touches the mold device 800 and fills the cavity space 801 in the mold device 800 with the molding material measured in the cylinder 310. The injection device 300 includes, for example, a cylinder 310 for heating the molding material, a nozzle 320 provided at the front end of the cylinder 310, a screw 330 arranged to be movable forward and backward and rotatable within the cylinder 310, a metering motor 340 for rotating the screw 330, an injection motor 350 for moving the screw 330 forward and backward, and a load detector 360 for detecting the load transmitted between the injection motor 350 and the screw 330.

[0056] The cylinder 310 (an example of a temperature control member) heats the molding material supplied therein from the supply port 311. The molding material contains, for example, a resin or the like. The molding material is formed, for example, in the form of pellets and is supplied to the supply port 311 in a solid state. The supply port 311 is formed at the rear portion of the cylinder 310. A cooler 312 such as a water-cooled cylinder is provided on the outer periphery of the rear portion of the cylinder 310. A heater 313 such as a band heater and a temperature detector 314 are provided on the outer periphery of the cylinder 310 in front of the cooler 312.

[0057] The cylinder 310 is divided into a plurality of zones in the axial direction (for example, the X-axis direction) of the cylinder 310. A heater (an example of a heating unit) 313 and a temperature detector (an example of a detection unit) 314 are provided in each of the plurality of zones. A set temperature is set for each of the plurality of zones, and the control device 700 controls the heater 313 so that the detected temperature of the temperature detector 314 becomes the set temperature.

[0058] The nozzle 320 is provided at the front end portion of the cylinder 310 and is pressed against the mold device 800. A heater 313 and a temperature detector 314 are provided on the outer periphery of the nozzle 320. The control device 700 controls the heater 313 so that the detected temperature of the nozzle 320 becomes the set temperature.

[0059] The screw 330 is rotatably and axially movable within the cylinder 310. When the screw 330 is rotated, the molding material is sent forward along the spiral groove of the screw 330. While being sent forward, the molding material is gradually melted by the heat from the cylinder 310. As the liquid molding material is sent forward of the screw 330 and accumulates at the front portion of the cylinder 310, the screw 330 is retracted. Thereafter, when the screw 330 is advanced, the liquid molding material accumulated in front of the screw 330 is injected from the nozzle 320 and fills the mold device 800.

[0060] At the front of the screw 330, a backflow prevention ring 331 is attached so as to be able to advance and retreat as a backflow prevention valve that prevents the backflow of the molding material from the front to the back of the screw 330 when the screw 330 is pushed forward.

[0061] When the screw 330 is advanced, the backflow prevention ring 331 is pushed backward by the pressure of the molding material in front of the screw 330 and relatively retreats with respect to the screw 330 to a closed position (see FIG. 2) where the flow path of the molding material is blocked. Thereby, it prevents the molding material accumulated in front of the screw 330 from flowing backward.

[0062] On the other hand, when the screw 330 is rotated, the backflow prevention ring 331 is pushed forward by the pressure of the molding material sent forward along the spiral groove of the screw 330 and relatively advances with respect to the screw 330 to an open position (see FIG. 1) where the flow path of the molding material is opened. Thereby, the molding material is sent to the front of the screw 330.

[0063] The backflow prevention ring 331 may be either a co-rotating type that rotates with the screw 330 or a non-co-rotating type that does not rotate with the screw 330.

[0064] Note that the injection device 300 may have a drive source for advancing and retreating the backflow prevention ring 331 with respect to the screw 330 between the open position and the closed position.

[0065] The metering motor 340 rotates the screw 330. The drive source for rotating the screw 330 is not limited to the metering motor 340, and for example, a hydraulic pump or the like may be used.

[0066] The injection motor 350 advances and retracts the screw 330. Between the injection motor 350 and the screw 330, a motion conversion mechanism or the like that converts the rotational motion of the injection motor 350 into the linear motion of the screw 330 is provided. The motion conversion mechanism has, for example, a screw shaft and a screw nut that engages with the screw shaft. Balls, rollers, or the like may be provided between the screw shaft and the screw nut. The drive source for advancing and retracting the screw 330 is not limited to the injection motor 350, and may be, for example, a hydraulic cylinder or the like.

[0067] The load detector 360 detects the load transmitted between the injection motor 350 and the screw 330. The detected load is converted into pressure by the control device 700. The load detector 360 is provided in the load transmission path between the injection motor 350 and the screw 330, and detects the load acting on the load detector 360.

[0068] The load detector 360 sends the signal of the detected load to the control device 700. The load detected by the load detector 360 is converted into the pressure acting between the screw 330 and the molding material, and is used for the control and monitoring of the pressure received by the screw 330 from the molding material, the back pressure on the screw 330, the pressure acting on the molding material from the screw 330, and the like.

[0069] Note that the pressure detector for detecting the pressure of the molding material is not limited to the load detector 360, and a general one can be used. For example, a nozzle pressure sensor or an in-mold pressure sensor may be used. The nozzle pressure sensor is installed in the nozzle 320. The in-mold pressure sensor is installed inside the mold device 800.

[0070] The injection device 300 performs a metering process, a filling process, a holding pressure process, and the like under the control of the control device 700. The filling process and the holding pressure process may be collectively referred to as an injection process.

[0071] In the metering process, the metering motor 340 is driven to rotate the screw 330 at a set rotational speed, and the molding material is fed forward along the spiral groove of the screw 330. Along with this, the molding material is gradually melted. As the liquid molding material is fed forward of the screw 330 and accumulates at the front part of the cylinder 310, the screw 330 is retracted. The rotational speed of the screw 330 is detected using, for example, the metering motor encoder 341. The metering motor encoder 341 detects the rotation of the metering motor 340 and sends a signal indicating the detection result to the control device 700. Note that the screw rotational speed detector for detecting the rotational speed of the screw 330 is not limited to the metering motor encoder 341, and a general one can be used.

[0072] In the metering process, in order to limit the rapid retraction of the screw 330, the injection motor 350 may be driven to apply a set back pressure to the screw 330. The back pressure on the screw 330 is detected using, for example, the load detector 360. When the screw 330 retracts to the metering completion position and a predetermined amount of molding material accumulates in front of the screw 330, the metering process is completed.

[0073] The position and rotational speed of the screw 330 in the metering process are set together as a series of setting conditions. For example, the metering start position, rotational speed switching position, and metering completion position are set. These positions are arranged in this order from the front to the rear, and represent the start point and end point of the section where the rotational speed is set. For each section, the rotational speed is set. The rotational speed switching position may be one or more. The rotational speed switching position may not be set. Also, the back pressure is set for each section.

[0074] In the filling process, the injection motor 350 is driven to move the screw 330 forward at a set moving speed, and the liquid molding material accumulated in front of the screw 330 is filled into the cavity space 801 in the mold device 800. The position and moving speed of the screw 330 are detected using, for example, the injection motor encoder 351. The injection motor encoder 351 detects the rotation of the injection motor 350 and sends a signal indicating the detection result to the control device 700. When the position of the screw 330 reaches the set position, the switching from the filling process to the holding pressure process (so-called V / P switching) is performed. The position where the V / P switching is performed is also called the V / P switching position. The set moving speed of the screw 330 may be changed according to the position and time of the screw 330, etc.

[0075] The position and moving speed of the screw 330 in the filling process are set together as a series of set conditions. For example, the filling start position (also called the "injection start position"), the moving speed switching position, and the V / P switching position are set. These positions are arranged in this order from the rear to the front and represent the start and end points of the section where the moving speed is set. The moving speed is set for each section. The moving speed switching position may be one or more. The moving speed switching position may not be set.

[0076] For each section where the moving speed of the screw 330 is set, the upper limit value of the pressure of the screw 330 is set. The pressure of the screw 330 is detected by the load detector 360. When the pressure of the screw 330 is below the set pressure, the screw 330 is advanced at the set moving speed. On the other hand, when the pressure of the screw 330 exceeds the set pressure, for the purpose of mold protection, the screw 330 is advanced at a moving speed slower than the set moving speed so that the pressure of the screw 330 becomes below the set pressure.

[0077] In addition, after the position of the screw 330 reaches the V / P switching position in the filling process, the screw 330 may be temporarily stopped at the V / P switching position, and then the V / P switching may be performed. Immediately before the V / P switching, instead of stopping the screw 330, the screw 330 may be advanced or retracted at a very low speed. Also, the screw position detector for detecting the position of the screw 330 and the screw moving speed detector for detecting the moving speed of the screw 330 are not limited to the injection motor encoder 351, and general ones can be used.

[0078] In the holding pressure process, the injection motor 350 is driven to push the screw 330 forward, and the pressure of the molding material at the front end of the screw 330 (hereinafter, also referred to as "holding pressure") is maintained at the set pressure, and the molding material remaining in the cylinder 310 is pushed toward the mold device 800. The shortage of the molding material due to the cooling shrinkage in the mold device 800 can be replenished. The holding pressure is detected using, for example, the load detector 360. The set value of the holding pressure may be changed according to the elapsed time from the start of the holding pressure process and the like. A plurality of holding pressures and holding times for holding the holding pressure may be set in the holding pressure process, respectively, and may be set together as a series of setting conditions.

[0079] In the holding pressure process, the molding material in the cavity space 801 in the mold device 800 is gradually cooled, and when the holding pressure process is completed, the inlet of the cavity space 801 is blocked by the solidified molding material. This state is called gate sealing, and the backflow of the molding material from the cavity space 801 is prevented. After the holding pressure process, the cooling process is started. In the cooling process, the molding material in the cavity space 801 is solidified. For the purpose of shortening the molding cycle time, the metering process may be performed during the cooling process.

[0080] Note that the injection device 300 of this embodiment is of the in-line screw type, but it may also be of the pre-plug type or the like. The injection device of the pre-plug type supplies the molding material melted in the plasticizing cylinder to the injection cylinder and injects the molding material from the injection cylinder into the mold device. In the plasticizing cylinder, a screw is arranged rotatably and non-axially movable, or a screw is arranged rotatably and axially movable. On the other hand, in the injection cylinder, a plunger is arranged axially movable.

[0081] Also, the injection device 300 of this embodiment is horizontal with the axial direction of the cylinder 310 being the horizontal direction, but it may also be vertical with the axial direction of the cylinder 310 being the vertical direction. The mold clamping device combined with the vertical injection device 300 may be vertical or horizontal. Similarly, the mold clamping device combined with the horizontal injection device 300 may be horizontal or vertical.

[0082] (Moving device) In the description of the moving device 400, similar to the description of the injection device 300, the moving direction of the screw 330 during filling (for example, the negative X-axis direction) is defined as the front, and the moving direction of the screw 330 during metering (for example, the positive X-axis direction) is defined as the rear for explanation.

[0083] The moving device 400 moves the injection device 300 forward and backward with respect to the mold device 800. Also, the moving device 400 presses the nozzle 320 against the mold device 800 to generate a nozzle touch pressure. The moving device 400 includes a hydraulic pump 410, a motor 420 as a drive source, a hydraulic cylinder 430 as a hydraulic actuator, and the like.

[0084] The hydraulic pump 410 has a first port 411 and a second port 412. The hydraulic pump 410 is a pump that can rotate in both directions. By switching the rotation direction of the motor 420, hydraulic fluid (for example, oil) is sucked from either the first port 411 or the second port 412 and discharged from the other to generate hydraulic pressure. Note that the hydraulic pump 410 can also suck hydraulic fluid from the tank and discharge the hydraulic fluid from either the first port 411 or the second port 412.

[0085] The motor 420 actuates the hydraulic pump 410. The motor 420 drives the hydraulic pump 410 with a rotational direction and a rotational torque according to a control signal from the control device 700. The motor 420 may be an electric motor and may be an electric servo motor.

[0086] The hydraulic cylinder 430 has a cylinder body 431, a piston 432, and a piston rod 433. The cylinder body 431 is fixed to the injection device 300. The piston 432 partitions the inside of the cylinder body 431 into a front chamber 435 as a first chamber and a rear chamber 436 as a second chamber. The piston rod 433 is fixed to the fixed platen 110.

[0087] The front chamber 435 of the hydraulic cylinder 430 is connected to the first port 411 of the hydraulic pump 410 via the first flow path 401. By supplying the hydraulic fluid discharged from the first port 411 to the front chamber 435 via the first flow path 401, the injection device 300 is pushed forward. The injection device 300 advances and the nozzle 320 is pressed against the fixed mold 810. The front chamber 435 functions as a pressure chamber that generates the nozzle touch pressure of the nozzle 320 by the pressure of the hydraulic fluid supplied from the hydraulic pump 410.

[0088] On the other hand, the rear chamber 436 of the hydraulic cylinder 430 is connected to the second port 412 of the hydraulic pump 410 via the second flow path 402. By supplying the hydraulic fluid discharged from the second port 412 to the rear chamber 436 of the hydraulic cylinder 430 via the second flow path 402, the injection device 300 is pushed backward. The injection device 300 retreats and the nozzle 320 is separated from the fixed mold 810.

[0089] In this embodiment, the moving device 400 includes the hydraulic cylinder 430, but the present invention is not limited thereto. For example, instead of the hydraulic cylinder 430, an electric motor and a motion conversion mechanism that converts the rotational motion of the electric motor into a linear motion of the injection device 300 may be used.

[0090] (Control device) The control device 700 is configured by, for example, a computer, and has a CPU (Central Processing Unit) 701, a storage medium 702 such as a memory, an input interface 703, and an output interface 704 as shown in FIGS. 1 and 2. The control device 700 performs various controls by causing the CPU 701 to execute a program stored in the storage medium 702. Further, the control device 700 receives a signal from the outside through the input interface 703 and transmits a signal to the outside through the output interface 704.

[0091] The control device 700 repeatedly manufactures molded products by repeatedly performing a metering process, a mold closing process, a pressure boosting process, a mold clamping process, a filling process, a pressure holding process, a cooling process, a pressure releasing process, a mold opening process, a pushing out process, and the like. A series of operations for obtaining a molded product, for example, the operations from the start of the metering process to the start of the next metering process, are also referred to as a "shot" or a "molding cycle". Also, the time required for one shot is also referred to as the "molding cycle time" or the "cycle time".

[0092] One molding cycle has, for example, a metering process, a mold closing process, a pressure boosting process, a mold clamping process, a filling process, a pressure holding process, a cooling process, a pressure releasing process, a mold opening process, and a pushing out process in this order. The order here is the order of the start of each process. The filling process, the pressure holding process, and the cooling process are performed during the mold clamping process. The start of the mold clamping process may coincide with the start of the filling process. The completion of the pressure releasing process coincides with the start of the mold opening process.

[0093] In addition, for the purpose of shortening the molding cycle time, a plurality of processes may be performed simultaneously. For example, the metering process may be performed during the cooling process of the previous molding cycle or during the mold clamping process. In this case, the mold closing process may be performed first in the molding cycle. Also, the filling process may be started during the mold closing process. Further, the ejection process may be started during the mold opening process. When an on-off valve for opening and closing the flow path of the nozzle 320 is provided, the mold opening process may be started during the metering process. This is because even if the mold opening process is started during the metering process, as long as the on-off valve closes the flow path of the nozzle 320, the molding material does not leak from the nozzle 320.

[0094] Note that one molding cycle may include processes other than the metering process, mold closing process, pressure boosting process, mold clamping process, filling process, pressure holding process, cooling process, pressure releasing process, mold opening process, and ejection process.

[0095] For example, after the completion of the pressure holding process and before the start of the metering process, a pre-metering suck-back process of retracting the screw 330 to a preset metering start position may be performed. The pressure of the molding material accumulated in front of the screw 330 can be reduced before the start of the metering process, and a sudden backward movement of the screw 330 at the start of the metering process can be prevented.

[0096] Also, after the completion of the metering process and before the start of the filling process, a post-metering suck-back process of retracting the screw 330 to a preset filling start position (also referred to as the "injection start position") may be performed. The pressure of the molding material accumulated in front of the screw 330 can be reduced before the start of the filling process, and leakage of the molding material from the nozzle 320 before the start of the filling process can be prevented.

[0097] The control device 700 is connected to an operation device 750 that receives input operations by the user and a display device 760 that displays a screen. The operation device 750 and the display device 760 may be configured by, for example, a touch panel 770 and integrated. The touch panel 770 as the display device 760 displays a screen under the control of the control device 700. On the screen of the touch panel 770, information such as settings of the injection molding machine 10 and the current state of the injection molding machine 10 may be displayed. Further, on the screen of the touch panel 770, operation units such as buttons and input fields for receiving input operations by the user may be displayed. The touch panel 770 as the operation device 750 detects an input operation on the screen by the user and outputs a signal corresponding to the input operation to the control device 700. Thereby, for example, the user can perform settings (including input of set values) of the injection molding machine 10 by operating the operation unit provided on the screen while confirming the information displayed on the screen. Further, by the user operating the operation unit provided on the screen, the operation of the injection molding machine 10 corresponding to the operation unit can be performed. Note that the operation of the injection molding machine 10 may be, for example, the operation (including stop) of the mold clamping device 100, the ejector device 200, the injection device 300, the moving device 400, etc. Further, the operation of the injection molding machine 10 may be, for example, the switching of the screen displayed on the touch panel 770 as the display device 760.

[0098] Note that although the operation device 750 and the display device 760 of the present embodiment have been described as being integrated as the touch panel 770, they may be provided independently. Further, a plurality of operation devices 750 may be provided. The operation device 750 and the display device 760 are arranged on the operation side (negative Y-axis direction) of the mold clamping device 100 (more specifically, the fixed platen 110).

[0099] (First Embodiment) Figure 3 is a diagram showing the main part of the injection device 300 according to the first embodiment. As shown in Figure 3, the injection device 300 according to the first embodiment includes a cylinder 310 and a screw 330 that feeds resin within the cylinder 310. Further, the injection device 300 according to the present embodiment includes, as a heater 313, five heaters 313_1 to 313_5 divided for each zone on the outer periphery of the cylinder 310.

[0100] The screw 330 integrally has a screw rotation shaft 332 and flights 333 provided spirally around the screw rotation shaft 332. When the screw 330 rotates, the flights 333 of the screw 330 move, and the resin pellets filled in the screw groove of the screw 330 are sent forward.

[0101] The screw 330 is, for example, distinguished as a supply part 330a, a compression part 330b, and a metering part 330c from the rear (hopper 335 side) to the front (nozzle 320 side) along the axial direction. The supply part 330a is a part that receives resin pellets and conveys them forward. The compression part 330b is a part that melts the supplied resin while compressing it. The metering part 330c is a part that measures the melted resin in a fixed amount. The depth of the screw groove of the screw 330 is deep at the supply part 330a, shallow at the metering part 330c, and becomes shallower toward the front in the compression part 330b. Note that the configuration of the screw 330 is not particularly limited. For example, the depth of the screw groove of the screw 330 may be constant. In the present embodiment, the case where the ratio of the lengths of the supply part 330a, the compression part 330b, and the metering part 330c is approximately 50%, approximately 25%, and approximately 25% will be described, but the ratio of the lengths is shown as an example and varies depending on the type of molding material and the implementation mode.

[0102] The injection molding machine 10 injects the resin melted in the cylinder 310 from the nozzle 320 and fills the cavity space 801 in the mold device 800. The mold device 800 is composed of a fixed mold and a movable mold, and the cavity space 801 is formed between the fixed mold and the movable mold when the mold is clamped. The resin cooled and solidified in the cavity space 801 is taken out as a molded product after the mold is opened. The resin pellets as the molding material are supplied from the hopper 335 to the rear part of the cylinder 310.

[0103] A supply port 311 is formed at a predetermined position of the cylinder 310, and the hopper 335 is connected to the resin supply port. The resin pellets in the hopper 335 are supplied into the cylinder 310 through the resin supply port.

[0104] The cylinder 310 is divided into six zones along the longitudinal direction leading to the nozzle 320. In this embodiment, among the six zones, heaters 313 (heaters) are provided in five zones (zones Z1 to Z5). Also, temperature detectors 314_1 to 314_5 are provided in each zone.

[0105] In this embodiment, they are referred to as the first zone Z1, the second zone Z2, the third zone Z3, the fourth zone Z4, and the fifth zone Z5 in order from the vicinity of the resin supply port. The first zone Z1 and the second zone Z2 are provided in the supply part 330a that receives the resin pellets and conveys them forward. The third zone Z3 is provided in the compression part 330b that melts the supplied resin while compressing it. The fourth zone Z4 is provided in the metering part 330c that meters the melted resin in a fixed amount. The fifth zone Z5 is provided near the nozzle 320. Note that this embodiment will describe an example of performing temperature control for each of the first zone Z1 to the fifth zone Z5, but it is not limited to the method of performing temperature control in the zone units shown in this embodiment, and the section for performing temperature control shall be determined according to the implementation modes such as the length of the cylinder 310 and the molding material.

[0106] The cooler 312 is provided behind (near the resin supply port) a plurality of heaters 313_1 to 313_5. The vicinity of the resin supply port where the cooler 312 is provided is heated up by the heat transmitted from the first zone Z1. Therefore, the cooler 312 cools the rear part of the cylinder 310 under the control from the control device 700, and keeps the temperature of the rear part of the cylinder 310 at a temperature at which the surface of the resin pellets does not melt so that no bridge (agglomeration) of the resin pellets occurs in the rear part of the cylinder 310 or in the hopper 335. The cooler 312 has a flow path 321 for a refrigerant such as water or air. Then, the control device 700 adjusts the temperature by adjusting the flow rate flowing through the flow path 321.

[0107] In the first zone Z1, the second zone Z2, the third zone Z3, the fourth zone Z4, and the fifth zone Z5, heaters 313_1 to 313_5 that are individually energized are respectively arranged on the outer periphery of the cylinder 310. As the heaters 313_1 to 313_5, for example, band heaters that heat the cylinder 310 from the outside are used. The band heaters are provided so as to surround the outer periphery of the cylinder 310. In other words, planar heaters 313_1 to 313_5 corresponding to the first zone Z1 to the fifth zone Z5 are attached to the outer periphery of the cylinder 310. By energizing the heaters 313_1 to 313_5, the resin pellets in the cylinder 310 can be heated and melted.

[0108] The plurality of heaters 313_1 to 313_5 are arranged along the longitudinal direction of the cylinder 310, and individually heat each of the first zone Z1 to the fifth zone Z5 obtained by dividing the cylinder 310 in the longitudinal direction. The plurality of heaters 313_1 to 313_5 are feedback-controlled by the control device 700 so that the temperatures of the respective zones Z1 to Z5 become the set temperatures. The temperatures of the respective zones Z1 to Z5 are measured by temperature detectors 314_1 to 314_5. The operation of the injection molding machine 10 is controlled by the control device 700.

[0109] Incidentally, the heat capacity varies for each zone that divides the cylinder 310. Therefore, when heating with a plurality of heaters 313_1 to 313_5, the temperature increase rate for each zone is different. Thus, the control device 700 according to the present embodiment is provided with a function to adjust so that the temperature increase rate for each zone becomes the same, enabling the temperature to increase at the same rate for all zones.

[0110] In the injection molding machine 10 according to the present embodiment, a target temperature for completing the temperature increase is set for each zone. Then, the control device 700 can estimate the required time from the start of the temperature increase to the completion of the temperature increase according to the target temperature set for the zone and the adjusted temperature increase rate. Thereby, in the control device 700 according to the present embodiment, when receiving an input of the completion time of the temperature increase from the user, the temperature increase is started before the estimated required time from the completion time of the temperature increase. Thereby, control can be performed so that the temperature increase is completed at the completion time received as an input from the user. Next, the control device 700 will be specifically described.

[0111] FIG. 4 is a diagram showing the components of the control device 700 according to the first embodiment in functional blocks. Each functional block shown in FIG. 4 is conceptual, and it is not necessary that they are physically configured as shown. All or part of each functional block can be configured by functionally or physically distributing and integrating them in any unit. Each processing function performed in each functional block is realized by a program executed by the CPU 701 for all or any part of it. Or each functional block may be realized as hardware by wired logic. As shown in FIG. 4, the control device 700 includes an input reception unit 711, a screen output unit 712, an acquisition unit 713, a calculation unit 714, and a heating control unit 715.

[0112] Further, the storage medium 702 of the control device 700 stores calendar timer setting information 721 and temperature increase control data 722.

[0113] The calendar timer setting information 721 is information indicating settings for starting or completing the temperature increase of the heaters 313_1 to 313_5 provided in the injection molding machine 10.

[0114] The temperature increase control data 722 is information for performing temperature increase control for each zone. Specific details will be described later.

[0115] The input reception unit 711 receives input operations by the user from the operation device 750 via the input interface 703.

[0116] The screen output unit 712 outputs data such as a display screen to the display device 760. For example, when the input reception unit 711 receives a display operation of the calendar setting screen, the calendar timer setting information 721 is read from the storage medium 702, and the calendar setting screen is output to the display device 760. Note that in this embodiment, an example of outputting a display screen or the like to the display device 760 is described, but the output destination of the data is not limited to the display device 760. For example, the screen output unit 712 may output data such as a display screen to an information processing device connected via a network.

[0117] FIG. 5 is a diagram illustrating a calendar setting screen output by the screen output unit 712 of the present embodiment.

[0118] As shown in FIG. 5, a plurality of tabs are arranged at the upper part of the display screen 1500. On the display screen 1500, User Management 1501, System Settings 1502, Auto Start 1503, and Version Information 1504 are arranged as tabs. In the example shown in FIG. 5, the state where Auto Start 1503 is selected is shown.

[0119] In the example shown in FIG. 5, based on the selection of Auto Start 1503, a calendar setting screen is displayed. On the calendar setting screen, a used column 1505 and an unused column 1506 are shown. Further, a column 510 for the heater (heat preservation) and a column 530 for the heater (molding) are shown.

[0120] The used column 1505 and the unused column 1506 are check boxes for setting whether to perform temperature increase control using the settings made for the calendar setting screen.

[0121] In the column 1510 of the heater (warming), for each day of the week, settings for temperature increase control up to the warming target temperature for each zone of the cylinder 310 are shown. The warming target temperature is a target temperature determined for cases where it is desired to shorten the time to molding compared to normal temperature but not to perform molding immediately. For example, it is conceivable to increase the temperature to the warming target temperature when preparing peripheral equipment of the injection molding machine 10 such as a take-out device or during a lunch break.

[0122] The status column 1511 has a flag indicating whether to use the setting shown in the column 1510 of the heater (warming). When the status column 1511 is checked (set), it indicates that the setting in the column 1510 of the heater (warming) is used.

[0123] In the column 1510 of the heater (warming), time input fields 1513 to 1519 are shown for each day of the week indicated by "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", and "Sunday". Also, status columns 1523 to 1529 are shown for each day of the week. The status columns 1523 to 1529 are check boxes for setting whether to perform temperature increase control according to the time input in the time input fields 1513 to 1519 (an example of a second input field).

[0124] In the column 1510 of the heater (warming), a start time column 1512A and a completion time column 1512B are shown. The start time column 1512A is a check box for setting whether to use the time input in the time input fields 1513 to 1519 as the start time of temperature increase for each day of the week. The completion time column 1512B is a check box for setting whether to use the time input in the time input fields 1513 to 1519 as the completion time of temperature increase for each day of the week.

[0125] That is, when the start time column 1512A is checked, the control device 700 starts the heating control by the heaters 313_1 to 313_5 so that the temperature rise starts at the time input in the time input columns 1513 to 1519 for each day of the week. Thereafter, as soon as the heat preservation target temperature set for each zone is reached, the heating control by the heaters 313_1 to 313_5 is completed.

[0126] When the completion time column 1512B is checked, the control device 700 controls so that the temperature rise is completed at the time input in the time input columns 1513 to 1519 for each day of the week. That is, the control device 700 starts the heating control by the heaters 313_1 to 313_5 from the time calculated in reverse so that the temperature rise is completed at the input time, and at the input time, reaches the heat preservation target temperature set for each zone, and controls to complete the heating control by the heaters 313_1 to 313_5.

[0127] The row 1530 of the heater (molding) shows the setting for temperature rise control to the molding target temperature for each zone of the cylinder 310 for each day of the week. The molding target temperature is the target temperature determined to enable molding by the injection molding machine 10.

[0128] The status column 1531 has a flag indicating whether to use the setting shown in the row 1530 of the heater (molding). When the status column 1531 is checked (set), it indicates that the setting in the row 1530 of the heater (molding) is used.

[0129] In the row 1530 of the heater (molding), the time input columns 1533 to 1539 (an example of the first input column) are shown for each day of the week indicated by "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", and "Sunday". Also, for each day of the week, the status columns 1543 to 1549 are shown. The status columns 1543 to 1549 are check boxes for setting whether to perform temperature rise control according to the time input in the time input columns 1533 to 1539.

[0130] In the row 1530 of the heater (for molding), a start time column 1532A and a completion time column 1532B are shown. The start time column 1532A is a check box for setting whether to use the times input in the time input fields 1533 to 1539 for each day of the week as the start time of temperature increase. The completion time column 1532B is a check box for setting whether to use the times input in the time input fields 1533 to 1539 for each day of the week as the completion time of temperature increase.

[0131] That is, when the start time column 1532A is checked, the control device 700 starts the heating control by the heaters 313_1 to 313_5 so that the temperature increase starts at the times input in the time input fields 1533 to 1539 for each day of the week. Then, as soon as the heat preservation target temperature set for each zone is reached, the heating control by the heaters 313_1 to 313_5 is completed.

[0132] When the completion time column 1532B is checked, the control device 700 controls so that the temperature increase is completed at the times input in the time input fields 1533 to 1539 for each day of the week. In other words, the control device 700 starts the heating control by the heaters 313_1 to 313_5 from the time calculated in reverse so that the temperature increase is completed at the input time, and controls so that the molding target temperature set for each zone is reached at the input time and the heating control by the heaters 313_1 to 313_5 is completed.

[0133] The input receiving unit 711 according to the present embodiment receives an input for the above-described columns displayed on the calendar setting screen. For example, the input receiving unit 711 receives a check for the start time column 1532A or the completion time column 1532B in the row 1530 of the heater (for molding).

[0134] Similarly, the input reception unit 711 receives the time information input to the time input fields 1533 to 1539 (an example of input fields) in the heater (forming) row 1530. The input reception unit 711 updates the calendar timer setting information 721 according to the received information. Then, the heating control unit 715 performs heating control of the heaters 313_1 to 313_5 according to the calendar timer setting information 721.

[0135] In the example shown in FIG. 5, the input reception unit 711 receives the check of the completion time field 1532B in the heater (forming) row 1530, receives the check of the Monday status field 1543, and receives the time information "8:00" input to the Monday time input field 1539. Thereby, the control device 700 controls so that, on Monday, the forming target temperature for each zone is reached at 8:00 am by the heating control by the heaters 313_1 to 313_5 provided for each zone, and the temperature rise is completed. That is, in the present embodiment, the operator can complete the temperature rise at the set time by referring to the calendar setting screen shown in FIG. 5 and performing the check of the completion time field 1532B and the setting of the time input field 1539. Therefore, it is possible to make a setting according to the operator's request by an intuitive operation.

[0136] The control device 700 according to the present embodiment displays a calendar setting screen including the time input fields 1533 to 1539 in the heater (forming) row 1530 and the time input fields 1513 to 1519 in the heater (heat insulation) row 1510 as shown in FIG. 5. Thereby, the user can set whether to maintain the heat insulation state of the cylinder 310 or start forming for each day of the week. In other words, since the control device 700 can make a setting according to the situation for each day of the week, the convenience of the user can be improved.

[0137] Also, in the calendar setting screen as shown in FIG. 5, by displaying the start time columns 1512A and 1532A and the completion time columns 1512B and 1532B, it is possible to select the setting of the start time and the setting of the completion time. That is, in addition to enabling the setting of the completion time, the same start time setting as in the prior art is also possible. As a result, it is possible to perform temperature increase control according to the operator's request, so that the convenience can be improved.

[0138] Next, a specific configuration for performing temperature increase control for each zone to reach the target temperature at the completion time will be described.

[0139] FIG. 6 is a diagram for explaining the temperature change data 722 for temperature increase control in an arbitrary zone stored in the storage medium 702 according to the present embodiment and the temperature change when heating is performed by the heater 313. The line 621 shown in FIG. 6 indicates the temperature change until the target temperature (molding target temperature or heat preservation target temperature) is reached as a result of performing heating control with the heater 313 (any one of the heaters 313_1 to 313_5) in an arbitrary zone. As shown in FIG. 6, after a predetermined time (hereinafter referred to as the idle time 601) has elapsed since the start of heating with the heater 313 (any one of the heaters 313_1 to 313_5), the temperature starts to rise, and during the rise time 602, the temperature rises at a predetermined temperature rise rate 611 (°C / s).

[0140] The temperature rise rate indicating the (average) rate of temperature rise per unit time during temperature increase when the heater 313 is always controlled to be on, and the idle time until the start of temperature increase according to the temperature rise rate are determined according to the heat capacity of the zone and the performance of the heater 313 provided in the zone.

[0141] Therefore, the storage medium 702 stores, as the temperature increase control data 722, for each zone, the idle time 601, the rise time, the temperature rise rate 611 (°C / s), the molding target temperature, and the heat preservation target temperature. The control device 700 according to the present embodiment can perform control so as to complete the temperature increase at the completion time by referring to the temperature increase control data 722.

[0142] Incidentally, in conventional injection molding machines, an automatic start function for starting temperature rise has been implemented. In the automatic start function, when a preset time is reached, the start control of the heater and the operation stop control of the molding machine at a preset time are automatically executed. For example, in a factory, it is used when presetting a time before the start of work as the start time of automatic start to preheat the temperature by the production start time. In particular, since the temperature rise of the heater may take one hour or more, it may have a significant impact on production.

[0143] Conventionally, the start time of automatic start has been set based on on-site experience or previously measured time. When the start time of automatic start is late, work cannot start at the work start time. On the other hand, when the start time of automatic start is early, after reaching the target temperature, it will be left for a long time, so there is a possibility of resin burning.

[0144] That is, the operator has a desire to complete the temperature rise by the work start time, but does not want to leave it for a long time after the temperature rise.

[0145] On the other hand, due to reasons such as different heat capacities for each zone of the cylinder 310, the idle time, the temperature rise rate, the molding target temperature, and the heat preservation target temperature are different. Therefore, in the present embodiment, the control device 700 has a function of controlling so that the temperature of all zones rises at the same rate using the temperature rise control data 722 stored in the storage medium 702. Thereby, it is possible to make all zones reach the target temperature at substantially the same time.

[0146] The acquisition unit 713 acquires detection results from various sensors provided in the injection molding machine 10. For example, the acquisition unit 713 acquires the detection results of the temperature for each zone by the temperature detectors 314_1 to 314_5.

[0147] The calculation unit 714 performs calculations necessary for heating control. For example, when performing automatic temperature rise based on the set completion time, the calculation unit 714 calculates the time when the temperature rise actually starts.

[0148] The calculation unit 714 according to this embodiment identifies the heating control data for each zone stored in the storage medium 702, which is the heating control data for the zone with the largest heat capacity, in other words, the heating control data that takes the most time to raise the temperature to the target temperature. Then, the calculation unit 714 calculates the required time until reaching the target temperature based on the rate of temperature increase, idle time, and the set target temperature (molding target temperature or heat preservation target temperature) of the heating control data that takes the most time to raise the temperature to the target temperature. Specifically, it is calculated by the following formula (1). Then, the calculation unit 714 calculates the time to actually start heating by subtracting the required time from the completion time. Note that the variable α is a constant determined according to the embodiment. The start temperature T0 is the temperature detected by the temperature detector 314 provided in the zone with the largest heat capacity before the injection molding machine 10 starts heating.

[0149] Required time = ((Target temperature T t - Start temperature T0) / Rate of temperature increase) + α · Idle time... (1)

[0150] The heating control unit 715 performs heating control for each of the heaters 313_1 to 313_5.

[0151] For example, in the zone with the largest heat capacity, the heating control unit 715 performs heating control of the heater 313 so as to follow the heating control data for that zone. In other words, the heating control unit 715 performs heating control by the heater 313 so as to reach the target temperature determined for that zone. The heating method for the zone with the largest heat capacity is described as an example of performing PID control (Proportional-Integral-Differential Controller) based on the deviation between the target value for each time indicated by the heating control data and the temperature detected by the temperature detector 314, and the description is omitted.

[0152] For other zones, the heating control unit 715 performs heating control of the heater so as to follow the degree of temperature increase in the zone with the largest heat capacity.

[0153] FIG. 7 is a diagram illustrating temperature changes in the zone with the largest heat capacity and other zones when control is performed to reach the target temperature. In the example shown in FIG. 7, the target temperature T of the zone with the largest heat capacity t_m (forming target temperature or heat preservation target temperature), and the target temperature T of other zones t_s (forming target temperature or heat preservation target temperature), will be described. However, the target temperature may be different for each zone. In the example shown in FIG. 7, the starting temperature T of temperature rise in the zone with the largest heat capacity 0_m is set, and the starting temperature T of temperature rise in other zones 0_s is set. Note that the other zones in this embodiment refer to any zone among the zones other than the zone with the largest heat capacity.

[0154] The line 1721 shown in FIG. 7 indicates the temperature change when heating is performed by the heater 313 so as to reach the target temperature T t_m in the zone with the largest heat capacity. As shown in FIG. 7, the data for temperature rise control in the zone with the largest heat capacity is the idle time 1701, the rise time 1702, and the temperature rise rate 1711 (°C / s).

[0155] The line 1741 shown in FIG. 7 indicates the temperature change when heating is performed by the heater 313 so as to reach the target temperature T t_s in a zone different from the zone with the largest heat capacity. As shown in FIG. 7, the data for temperature rise control in the zone with the largest heat capacity is the idle time Ls and the temperature rise rate 1731 (°C / s). Note that the temperature rise rate 1731 (°C / s) > the temperature rise rate 1711 (°C / s).

[0156] In this embodiment, the target temperature T of other zones t_s is, but when heating control is performed so that the target temperature T t_s is reached in other zones, the target temperature T t_s is reached earlier than in the zone with the largest heat capacity. Therefore, in this embodiment, the time when the zone with the largest heat capacity reaches the target temperature T t_m and the time when other zones reach the target temperature T t_sAdjust the target temperature of other zones according to the current temperature of the zone with the largest heat capacity so that the time to reach the target temperature is approximately the same as the current time.

[0157] In this embodiment, the calculation unit 714 calculates the target temperature of other zones according to the current temperature of the zone with the largest heat capacity every predetermined time.

[0158] First, the calculation unit 714 calculates the temperature rise rate R in the zone with the largest heat capacity using the following formula (2). Note that the temperature T m_pres is the current temperature detected by the temperature detector 314 in the zone with the largest heat capacity.

[0159] Temperature rise rate R = (current temperature T m_pres - starting temperature T 0_m ) / (target temperature T t_m - starting temperature T 0_m )......(2)

[0160] Then, the calculation unit 714 calculates the basic value T b of the current target temperature corresponding to the temperature rise rate in other zones based on the temperature rise rate in the zone with the largest heat capacity using the following formula (3).

[0161] Basic value T b = (target temperature T t_s - starting temperature T 0_s ) × temperature rise rate R + starting temperature T 0_s ......(2)

[0162] The calculated basic value T b does not consider the heating during the idle time Ls and the deviation between the currently detected temperature and the target temperature in the other zones. Therefore, the calculation unit 714 adds the temperature (TLs) corresponding to the idle time to the basic value T b , subtracts the deviation between the current temperature T s_pres of the other zone and the basic value T b (the current temperature of the other zone considering the temperature rise rate in the largest zone), and calculates the current target temperature T t_s_presIt is calculated. Specifically, the calculation unit 714 calculates the current target temperature of other zones using the following formula (3). Note that the temperature TLs corresponding to the idle time is calculated by multiplying the idle time Ls by the temperature increase rate 1711 as shown in FIG. 7.

[0163] Current target temperature T t_s_pres = T b + TLs - (Current temperature T s_pres - Base value T b )……(3)

[0164] FIG. 8 is a diagram showing the temperature change of each zone when heating control is performed for each zone according to the current target temperature T t_s_pres calculated by the calculation unit 714 according to the present embodiment. The line 1721 shown in FIG. 8 indicates the temperature change when heating is performed by the heater 313 so that the target temperature T t_m is reached in the zone with the largest heat capacity.

[0165] The line 1811 indicates the temperature change represented by the base value T b + TLs. The line 1812 indicates the current target temperature T t_s_pres in other zones.

[0166] In the example shown in FIG. 8, the target temperature T t_m of the zone with the largest heat capacity = the target temperature T t_s of other zones, and the starting temperature T 0_m for temperature increase in the zone with the largest heat capacity = the starting temperature T 0_s for temperature increase in other zones. Therefore, the base value T b = the current temperature T m_pres of the zone with the largest heat capacity.

[0167] Therefore, at the time t _pres in FIG. 8, the deviation E = (Current temperature T s_pres - Base value T b ) is the current temperature T s_pres of other zones (the temperature at time t _pres of the line 1821) - the current temperature T m_pres of the zone with the largest heat capacity (the temperature at time t of the line 1721)_pres It is represented by (the temperature of

[0168] That is, the calculation unit 714 subtracts "- deviation E" from the value indicated by the line 1811, thereby calculating the current target temperature T indicated by the line 1812. t_s_pres can be calculated. The current target temperature T t_s_pres is lower than the target temperature T t_s Therefore, the on / off control ratio of the heater 313 decreases, and the time to reach the target temperature T t_s can be delayed.

[0169] Then, the heating control unit 715 performs heating control of the heaters 313 in other zones so as to reach the current target temperature T t_s_pres Thus, in other zones, the temperature change indicated by the line 1821 is realized.

[0170] As shown in FIG. 8, in the present embodiment, by the above-described processing, it is possible to realize that the temperatures of the respective zones reach the target temperature substantially simultaneously at the time t f .

[0171] In other words, when the control device 700 sets the completion time for each day of the week on the calendar setting screen, the heating control unit 715, for each zone corresponding to the section where the solid timer molding material exists in the cylinder 310, the temperatures detected by the temperature detectors 314_1 to 314_5 reach the target temperature set for each zone, and the heating of the heaters 313_1 to 313_5 provided for each zone can be controlled so that the temperature rise is completed at the completion time.

[0172] In the present embodiment, as an example of a method of reaching the target temperature set for each zone and completing the temperature rise at the set completion time, the zone with the largest heat capacity reaches the target temperature T t_m at the time, and other zones reach the target temperature T t_sA method for adjusting the target temperature of other zones according to the current temperature of the zone with the largest heat capacity was described so that the time of reaching the target temperature is approximately the same as the time of arrival. However, the present embodiment does not limit the method of reaching the target temperature set for each zone and completing the temperature rise at the set completion time to the above-described method, and any method may be used as long as all zones reach the set target temperature and complete the temperature rise at the set completion time. For example, a method of adjusting the start time of temperature rise for each zone according to the heat capacity so as to reach the target temperature at the completion time may be used. Thus, any method may be used regardless of whether it is a well-known method as long as a plurality of zones reach the target temperature at the completion time and complete the temperature rise.

[0173] Next, the control performed by the control device 700 when a completion time is set for an arbitrary day of the week on the calendar setting screen will be described. FIG. 9 is a diagram showing a flowchart when the control device 700 according to the present embodiment performs heating control according to the set completion time.

[0174] First, the calculation unit 714 reads the calendar timer setting information 721 and the temperature rise control data 722 from the storage medium 702 (S1901).

[0175] Based on the temperature rise control data 722, the calculation unit 714 calculates the start time of temperature rise for completing the temperature rise at the completion time set in the calendar timer setting information 721 (S1902).

[0176] Thereafter, the heating control unit 715 starts the temperature rise control for each zone at the start time (S1903).

[0177] The heating control unit 715 performs heating control on the zone with the largest heat capacity so that the temperature becomes the target temperature T t_m (molding target temperature or heat preservation target temperature) (S1904).

[0178] On the other hand, in order to perform control regarding other zones, the acquisition unit 713 acquires the current temperature of each zone (S1905).

[0179] Based on the current temperatures of the respective zones, the calculation unit 714 calculates the current temperature rise rate R (S1906).

[0180] Based on the temperature rise rate R and the current temperatures of the other zones acquired by the acquisition unit 713, the calculation unit 714 calculates the current target temperature T for each of the other zones. t_s_pres (S1907).

[0181] The heating control unit 715 performs heating control for each of the other zones so as to reach the corresponding current target temperature T. t_s_pres (S1908).

[0182] The heating control unit 715 determines whether all zones have reached the target temperature based on the current temperature acquired by the acquisition unit 713 (S1909). If it is determined that the target temperature has not been reached (S1909: No), the processes after S1904 and S1905 are continued.

[0183] On the other hand, when the heating control unit 715 determines that all zones have reached the target temperature (S1909: Yes), the process ends.

[0184] As described above, the control device 700 according to the present embodiment performs heating control of other zones based on the temperature change of the zone with the latest time to reach the target temperature among the respective zones that divide the cylinder 310. As a result, the times for the respective zones that divide the cylinder 310 to reach the target temperature can be made substantially the same. Thereby, when any zone reaches the target temperature, it is possible to suppress the situation where other zones have not reached the target temperature or have already reached the target temperature. Thereby, it is possible to suppress the situation where the molding operation cannot be started because, despite any zone reaching the target temperature, other zones have not reached the target temperature. Furthermore, when any zone reaches the target temperature, it is possible to suppress the occurrence of resin burning inside the cylinder 310 because other zones have already reached the target temperature.

[0185] The control device 700 according to the present embodiment can cause all zones of the cylinder 310 to reach the target temperature almost simultaneously at the time when the input is received as the completion time on the calendar setting screen by performing the above-described control. Therefore, in the injection molding machine 10 according to the present embodiment, an operator can start molding from a desired time. Thereby, the working efficiency can be improved.

[0186] Conventionally, the start time of temperature rise has been input on the calendar setting screen. In this case, the operator has to input the start time by estimating the time when the temperature rise is completed based on past experience. Even if it is possible to control so that the start of temperature rise and the completion of temperature rise are simultaneous for all zones, if the only item that can be set on the calendar setting screen is the start time, it is still necessary to set the start time in consideration of the time required for temperature rise.

[0187] In the present embodiment, by displaying a calendar setting screen as shown in FIG. 5, it is possible to input the completion time. Moreover, the control device 700 enables control of the completion of temperature rise by the time of the completion time by the control according to the above-described configuration. Therefore, in the injection molding machine 10 according to the present embodiment, instead of adjusting the start time of work so that the temperature rise ends at the start time of work by inputting the start time based on past experience, the operator only needs to input the start time of work as the completion time of temperature rise. For this reason, in the control device 700 of the injection molding machine 10 according to the present embodiment, the burden on the operator when setting on the calendar setting screen can be reduced. That is, the control device 700 according to the present embodiment can improve the operability of the user.

[0188] (Modification 1) The control device 700 according to the above-described embodiment has been described with an example in which the temperature detected by the temperature detectors 314_1 to 314_5 for each zone completes the temperature increase control when the target temperature is reached. However, the above-described embodiment is not limited to the method of completing the temperature increase control when the target temperature is reached. For example, even when the temperature detected by the temperature detectors 314_1 to 314_5 reaches the target temperature, it may take more time for the internal resin to reach the target temperature.

[0189] Therefore, when the temperature detected by the temperature detectors 314_1 to 314_5 reaches the target temperature, the control device 700 according to Modification 1 waits for a predetermined time (for example, 15 minutes) while the heating control unit 715 performs heating control by the heaters 313_1 to 313_5 to bring the resin inside the cylinder 310 to the target temperature. As in this Modification 1, the control device 700 may have a timer function for so-called cold prevention. Startup In this case, the calculation unit 714 calculates the start time of the temperature increase after adding the waiting time by the cold prevention timer function to the required time until the target temperature is reached. In the control device 700 according to this modification, the efficiency at the start of the operation can be improved by considering the temperature of the resin inside the cylinder 310.

[0190] In this case, the calculation unit 714 adds the waiting time by the cold prevention timer function to the required time until the target temperature is reached, and then calculates the start time of the temperature increase. In the control device 700 according to this modification, the efficiency at the start of the operation can be improved by considering the temperature of the resin inside the cylinder 310. Startup In this case, the calculation unit 714 adds the waiting time by the cold prevention timer function to the required time until the target temperature is reached, and then calculates the start time of the temperature increase. In the control device 700 according to this modification, the efficiency at the start of the operation can be improved by considering the temperature of the resin inside the cylinder 310.

[0191] (Modification 2) In the above-described embodiment, an example in which heating control is performed based on the completion time input on the calendar setting screen has been described. However, the usage mode of the input completion time is not limited to heating control. As a modification, the control device 700 may save the completion time set in the calendar timer setting information as a log after the heating control by the heater 313 for each day of the week is performed.

[0192] As a result, the control device 700 according to this modification example can save the time when the heating control is completed, in other words, the start time of the work, as a log. That is, since the start time of the daily work can be automatically saved, the burden on the operator of creating a report showing the progress of the daily work can be reduced.

[0193] (Modification Example 3) In the above-described embodiments and modification examples, the temperature control member in the injection molding machine 10 has been described in the case of the cylinder 310 provided in the injection molding machine 10. However, the above-described embodiments and modification examples do not limit the temperature control member to the cylinder 310, and other members may be used. Therefore, in Modification Example 3, the case where the temperature control member provided in the injection molding machine 10 is other than the cylinder 310 will be described.

[0194] In this modification example, as the temperature control member, a nozzle 320 whose temperature is controlled by a heater or the like may be included.

[0195] Similar to the cylinder 310 of the above-described embodiment, the nozzle 320 may be divided into a plurality of zones (for example, two zones) in the section where temperature control is performed. Temperature detectors and heaters are provided for each zone of the nozzle 320. Also, the heat capacity may be different for each zone of the nozzle 320, or the target temperature may be different for each zone.

[0196] Furthermore, in this modification example, as the temperature control member, a mold device 800 whose temperature is controlled by a mold heater (not shown) may be included.

[0197] Similar to the cylinder 310 and the nozzle 320 of the above-described embodiment, the mold device 800 may be divided into a plurality of zones (for example, two zones) in the section where temperature control is performed. Temperature detectors and heaters are provided for each zone of the mold device 800. Also, the heat capacity may be different for each zone of the mold device 800, or the target temperature may be different for each zone.

[0198] Then, the control device 700 according to this modification performs the same processing as the above-described embodiment, and for the nozzle 320 and the mold device 800, the temperature reaches the target temperature set for each zone at the completion time set by the user, and the temperature increase is completed. As a result, the same effects as those of the above-described embodiment can be obtained.

[0199] Modification 3 has described the case where the nozzle 320 and the mold device 800 are included as temperature control members. However, the temperature control member is not limited to the cylinder 310 and the nozzle 320, and may be the cylinder 310 or the nozzle 320, or may be other members provided in the injection molding machine 10 where temperature control is performed.

[0200] (Modification 4) There may be a case where the injection molding machine 10 is provided with a mold device that heats the resin existing in the runner portion with a heater. In this modification, the configuration for heating the resin existing in the runner portion is referred to as a hot runner portion. Therefore, in Modification 4, the case where the hot runner portion of the mold device is included as a temperature control member will be described.

[0201] The hot runner portion of the mold device may be divided into a plurality of zones (for example, two zones) in the section where temperature control is performed. And a heater may be provided for each of the divided zones in the hot runner portion. Further, a temperature detector may be provided in the hot runner portion so that the temperature of each zone can be detected.

[0202] By the way, in a mold device having a hot runner portion, the chip portion has a small heat capacity, while the manifold has a large heat capacity and takes time to increase the temperature. For this reason, the hot runner portion performs temperature control according to each zone where the heat capacity is different. Also, the target temperature for each zone may be different.

[0203] Then, the control device 700 according to this modification performs the same processing as the above-described embodiment, and for the hot runner section of the mold device, it reaches the target temperature set for each zone at the completion time set by the user, thereby completing the temperature rise. As a result, the same effects as those of the above-described embodiment can be obtained.

[0204] The control device 700 according to the above-described embodiment and modification accepts the input of the completion time on the calendar setting screen including the input field for the completion time of raising the temperature of the cylinder provided in the injection molding machine. As a result, the control device 700 can perform temperature rise control so that the injection molding machine 10 is completed at the completion time, and can save a log based on the completion time, thereby reducing the burden on the operator. The control device 700 according to the above-described embodiment and modification can be used intuitively when working with the injection molding machine 10 by inputting the completion time of the temperature rise, and can improve convenience.

[0205] In the above-described embodiment and modification, the case where a temperature detector (for example, temperature detector 314) and a heater (for example, heater 313) are installed for each zone that divides the temperature control member (for example, at least one or more of the cylinder 310, the nozzle 320, the mold device 800, and the hot runner section of the mold device) has been described. However, the present invention is not limited to such a configuration, and control may be performed with one temperature detector (for example, temperature detector 314) and one heater (for example, heater 313) for the temperature control member (for example, at least one or more of the cylinder 310, the nozzle 320, the mold device 800, and the runner of the hot runner mold device).

[0206] The control device 700 according to the above-described embodiment and modification controls to complete the temperature rise of the temperature control member at the completion time, so that the temperature rise is completed before the operator starts working, thereby suppressing the situation where the injection molding machine is left in a state where the temperature rise is completed until the start of work, or the situation where the temperature rise is not completed when the operator goes to the site. As a result, the start of molding in the injection molding machine can be made more efficient, and productivity can be improved.

[0207] The embodiments of the injection molding machine according to the present invention have been described above, but the present invention is not limited to the above embodiments. Within the scope described in the claims, various changes, modifications, substitutions, additions, deletions, and combinations are possible. Naturally, they also belong to the technical scope of the present invention.

Explanation of Reference Numerals

[0208] 10 Injection molding machine 700 Control device 711 Input receiving unit 712 Screen output unit 713 Acquisition unit 714 Calculation unit 715 Heating control unit

Claims

1. An output unit that outputs a screen including an input field for the completion time when the temperature rise of a temperature control member that is temperature-controlled in an injection molding machine is completed; A reception unit that receives an input of the completion time for the input field; A heating control unit that adjusts the start time of heating by a heating unit provided for each zone according to the heating rate for each zone that divides a section where temperature control is performed in the temperature control member so that the temperature rise is completed at the completion time; A control device for an injection molding machine comprising the above.

2. The output unit outputs a screen including the first input field for the completion time when the temperature rise of the temperature control member is completed in order to start molding of the injection molding machine, and the second input field for the completion time when the temperature rise of the temperature control member is completed in order to keep the injection molding machine warm. The control device for an injection molding machine according to Claim 1.

3. The temperature control member is at least one of a cylinder provided in the injection molding machine, a nozzle provided in the injection molding machine, a mold device attached to the injection molding machine, and a hot runner part included in the mold device attached to the injection molding machine. The control device for an injection molding machine according to Claim 1.

4. An injection device that fills a mold device with a molding material; A temperature control member for which temperature control is performed; A control device that controls the injection device, and The control device An output unit that outputs a screen including an input field for the completion time when the temperature rise of the temperature control member is completed; A reception unit that receives an input of the completion time for the input field; A heating control unit that adjusts the start time of heating by a heating unit provided for each zone according to the heating rate for each zone that divides a section where temperature control is performed in the temperature control member so that the temperature rise is completed at the completion time. An injection molding machine.

5. A display control step of displaying an input field for the completion time when the temperature rise of a temperature control member that is temperature-controlled in an injection molding machine is completed; A reception step of receiving an input of the completion time for the input field; A heating control step of adjusting the start time of heating by a heating unit provided for each zone according to the heating rate for each zone that divides a section where temperature control is performed in the temperature control member so that the temperature rise is completed at the completion time; A control method for an injection molding machine having the above.

6. A display control step of displaying an input field for the completion time when the temperature rise of a temperature control member that is temperature-controlled in an injection molding machine is completed; A reception step of receiving an input of the completion time for the input field; A heating control step of adjusting the start time of heating by a heating unit provided for each zone according to the heating rate for each zone that divides a section in which temperature control is performed by the temperature control member so that the temperature rise is completed at the completion time; A program for causing a computer to execute.

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