WO2022210791A1 - Plateau mobile - Google Patents

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Publication number
WO2022210791A1
WO2022210791A1 PCT/JP2022/015703 JP2022015703W WO2022210791A1 WO 2022210791 A1 WO2022210791 A1 WO 2022210791A1 JP 2022015703 W JP2022015703 W JP 2022015703W WO 2022210791 A1 WO2022210791 A1 WO 2022210791A1
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WO
WIPO (PCT)
Prior art keywords
mold
screw
movable platen
mold clamping
toggle
Prior art date
Application number
PCT/JP2022/015703
Other languages
English (en)
Japanese (ja)
Inventor
惇朗 田村
知寛 森谷
陽介 伊藤
Original Assignee
住友重機械工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 住友重機械工業株式会社 filed Critical 住友重機械工業株式会社
Priority to CN202280007794.7A priority Critical patent/CN116568427A/zh
Priority to JP2023511430A priority patent/JPWO2022210791A1/ja
Publication of WO2022210791A1 publication Critical patent/WO2022210791A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/26—Mechanisms or devices for locking or opening dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/64—Mould opening, closing or clamping devices
    • B29C45/66—Mould opening, closing or clamping devices mechanical

Definitions

  • the present invention relates to a movable platen of a mold clamping device.
  • An injection molding machine equipped with a mold clamping device that moves a movable platen is known.
  • the platen may be damaged.
  • an object of the present invention is to provide a movable platen that suppresses stress concentration.
  • a movable platen includes a toggle pin connection portion, a mold mounting portion, and a connection portion connecting the toggle pin connection portion and the mold mounting portion to form a mold clamping force transmission path.
  • the connecting portion includes a first end connected to the toggle pin connecting portion, and a second end connected to the mold mounting portion and forming the transmission path between the first end and the first end. , and a third end branching from the transmission path, the third end having a mounting portion to which a mounting component is mounted.
  • FIG. 4 is a perspective view of a movable platen;
  • FIG. 4 is a perspective view of a movable platen; It is a front view of a movable platen.
  • FIG. 4 is a side view of the movable platen; It is a rear view of a movable platen. It is a top view of a movable platen.
  • FIG. 1 is a diagram showing a state of an injection molding machine according to one embodiment when mold opening is completed.
  • FIG. 2 is a diagram showing a state of the injection molding machine according to the embodiment at the time of mold clamping.
  • the X-axis direction, Y-axis direction and Z-axis direction are directions perpendicular to each other.
  • the X-axis direction and Y-axis direction represent the horizontal direction, and the Z-axis direction represents the vertical direction.
  • the X-axis direction is the mold opening/closing direction
  • the Y-axis direction is the width direction of the injection molding machine 1 .
  • the Y-axis direction negative side is called the operating side
  • the Y-axis direction positive side is called the non-operating side.
  • the injection molding machine 1 includes a mold clamping device 100 that opens and closes a mold device 800, an ejector device 200 that ejects a molded product molded by the mold device 800, and 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 1;
  • a frame 900 that supports the components.
  • the frame 900 includes a mold clamping device frame 910 that supports the mold clamping device 100 and an injection device frame 920 that supports the injection device 300 .
  • the mold clamping device frame 910 and the injection device frame 920 are each installed on the floor 2 via leveling adjusters 930 .
  • a control device 700 is arranged in the inner space of the injection device frame 920 . Each component of the injection molding machine 1 will be described below.
  • the moving direction of the movable platen 120 when the mold is closed (for example, the X-axis positive direction) is defined as the front, and the moving direction of the movable platen 120 when the mold is opened is defined as the rear (for example, the X-axis negative direction). do.
  • the mold clamping device 100 performs mold closing, pressure increase, mold clamping, depressurization, and mold opening of the mold device 800 .
  • Mold apparatus 800 includes a fixed mold 810 and a movable mold 820 .
  • the mold clamping device 100 is, for example, a horizontal type, and the mold opening/closing direction is horizontal.
  • the mold clamping device 100 includes a stationary platen 110 to which a stationary mold 810 is attached, a movable platen 120 to which a movable mold 820 is attached, a moving mechanism 102 that moves the movable platen 120 in the mold opening/closing direction with respect to the stationary platen 110, have
  • the fixed platen 110 is fixed to the mold clamping device frame 910 .
  • a stationary mold 810 is attached to the surface of the stationary platen 110 facing the movable platen 120 .
  • the movable platen 120 is arranged movably in the mold opening/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 die 820 is attached to the surface of the movable platen 120 facing the stationary platen 110 .
  • the moving mechanism 102 moves the movable platen 120 back and forth with respect to the fixed platen 110 to perform mold closing, pressure increase, mold clamping, pressure release, and mold opening of the mold device 800 .
  • the moving mechanism 102 includes a toggle support 130 spaced apart from the stationary platen 110 , tie bars 140 connecting the stationary platen 110 and the toggle support 130 , and moving the movable platen 120 relative to the toggle support 130 in the mold opening/closing direction.
  • a toggle mechanism 150 that operates the toggle mechanism 150
  • a mold clamping motor 160 that operates the toggle mechanism 150
  • a motion conversion mechanism 170 that converts the rotary motion of the mold clamping motor 160 into a linear motion
  • a mold that adjusts the interval between the stationary platen 110 and the toggle support 130.
  • a thickness adjustment mechanism 180 .
  • the toggle support 130 is spaced apart from the fixed platen 110 and mounted on the mold clamping device frame 910 so as to be movable in the mold opening/closing direction.
  • the toggle support 130 may be arranged so as to be movable along a guide laid on the mold clamping device frame 910 .
  • the guides of the toggle support 130 may be common with the guides 101 of the movable platen 120 .
  • the fixed platen 110 is fixed to the mold clamping device frame 910, and the toggle support 130 is arranged to be movable in the mold opening/closing direction with respect to the mold clamping device frame 910.
  • the stationary platen 110 may be arranged to be movable relative to the mold clamping device frame 910 in the mold opening/closing direction.
  • the tie bar 140 connects the stationary platen 110 and the toggle support 130 with a gap L in the mold opening/closing direction.
  • a plurality of (for example, four) tie bars 140 may be used.
  • the multiple tie bars 140 are arranged parallel to the mold opening/closing direction and extend according to the mold clamping force.
  • At least one tie bar 140 may be provided with a tie bar strain detector 141 that detects strain of the tie bar 140 .
  • Tie-bar distortion detector 141 sends a signal indicating the detection result to control device 700 .
  • the detection result of the tie bar strain detector 141 is used for detection of mold clamping force and the like.
  • the tie bar strain detector 141 is used as a mold clamping force detector that detects the mold clamping force, but the present invention is not limited to this.
  • the mold clamping force detector is not limited to the strain gauge type, but may be of piezoelectric type, capacitive type, hydraulic type, electromagnetic type, etc., and its mounting position is not limited to the tie bar 140 either.
  • the toggle mechanism 150 is arranged between the movable platen 120 and the toggle support 130 and moves the movable platen 120 relative to the toggle support 130 in the mold opening/closing direction.
  • the toggle mechanism 150 has a crosshead 151 that moves in the mold opening/closing direction, and a pair of link groups that bend and stretch as the crosshead 151 moves.
  • a pair of link groups each has a first link 152 and a second link 153 that are connected by a pin or the like so as to be bendable and stretchable.
  • the first link 152 is swingably attached to the movable platen 120 with a pin or the like.
  • the second link 153 is swingably attached to the toggle support 130 with a pin or the like.
  • a second link 153 is attached to the crosshead 151 via a third link 154 .
  • the crosshead 151 advances and retreats with respect to the toggle support 130
  • the first link 152 and the second link 153 bend and stretch, and the movable platen 120 advances and retreats with respect to the toggle support 130 .
  • the configuration of the toggle mechanism 150 is not limited to the configuration shown in FIGS. 1 and 2.
  • the number of nodes in each link group is five, but the number may be four, and one end of the third link 154 is coupled to the node between the first link 152 and the second link 153. may be
  • the mold clamping motor 160 is attached to the toggle support 130 and operates the toggle mechanism 150 .
  • the mold clamping motor 160 advances and retreats the crosshead 151 with respect to the toggle support 130 , thereby bending and stretching the first link 152 and the second link 153 to advance and retreat the movable platen 120 with respect to the toggle support 130 .
  • the mold clamping motor 160 is directly connected to the motion conversion mechanism 170, but may be connected to the motion conversion mechanism 170 via a belt, pulley, or the like.
  • the motion conversion mechanism 170 converts rotary motion of the mold clamping motor 160 into linear motion of the crosshead 151 .
  • the motion conversion mechanism 170 includes a threaded shaft and a threaded nut that screws onto the threaded shaft. Balls or rollers may be interposed between the screw shaft and the screw nut.
  • the mold clamping device 100 Under the control of the control device 700, the mold clamping device 100 performs a mold closing process, a pressure increasing process, a mold clamping process, a depressurizing process, a mold opening process, and the like.
  • the mold clamping motor 160 is driven to advance the crosshead 151 to the mold closing completion position at the set movement speed, thereby advancing the movable platen 120 and bringing the movable mold 820 into contact with the fixed mold 810. .
  • the position and moving speed of the crosshead 151 are detected using, for example, a mold clamping motor encoder 161 or the like.
  • the mold clamping motor encoder 161 detects rotation of the mold clamping motor 160 and sends a signal indicating the detection result to the control device 700 .
  • the crosshead position detector for detecting the position of the crosshead 151 and the crosshead movement speed detector for detecting the movement speed of the crosshead 151 are not limited to the mold clamping motor encoder 161, and general ones are used. can. Further, 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 mold clamping motor encoder 161, and general ones are used. can.
  • the mold clamping motor 160 is further driven to further advance the crosshead 151 from the mold closing completion position to the mold clamping position, thereby generating mold clamping force.
  • the mold clamping motor 160 is driven to maintain the position of the crosshead 151 at the mold clamping position.
  • the mold clamping force generated in the pressurizing process is maintained.
  • 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.
  • a molded product is obtained by solidifying the filled molding material.
  • the number of cavity spaces 801 may be one or plural. In the latter case, multiple moldings are obtained simultaneously.
  • the insert material may be arranged in part of the cavity space 801 and the other part of the cavity space 801 may be filled with the molding material.
  • a molded product in which the insert material and the molding material are integrated is obtained.
  • the mold clamping motor 160 is driven to retract the crosshead 151 from the mold clamping position to the mold opening start position, thereby retracting the movable platen 120 and reducing the mold clamping force.
  • the mold opening start position and the mold closing completion position may be the same position.
  • the mold 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 moving the movable mold 820 to the fixed metal. away from the mold 810; After that, the ejector device 200 ejects the molded product from the movable mold 820 .
  • the setting conditions in the mold closing process, pressure rising process, and mold clamping process are collectively set as a series of setting conditions.
  • the moving speed and position of the crosshead 151 including the mold closing start position, the moving speed switching position, the mold closing completion position, and the mold clamping position
  • the mold clamping force in the mold closing process and the pressurizing process are set as a series of setting conditions.
  • the mold closing start position, the movement speed switching position, the mold closing completion position, and the mold clamping position are arranged in this order from the rear side to the front side, and represent the start point and end point of the section in which the movement speed is set.
  • a moving speed is set for each section.
  • the moving speed switching position may be one or plural.
  • the moving speed switching position does not have to be set. Only one of the mold clamping position and the mold clamping force may be set.
  • the setting conditions in the depressurization process and the mold opening process are set in the same way.
  • the moving speed and position of the crosshead 151 (mold opening start position, moving speed switching position, and mold opening completion position) in the depressurizing process and the mold opening process are collectively set as a series of setting conditions.
  • the mold opening start position, the movement speed switching position, and the mold opening completion position are arranged in this order from the front side to the rear side, and represent the start point and end point of the section for which the movement speed is set.
  • a moving speed is set for each section.
  • the moving speed switching position may be one or plural.
  • the moving speed switching position does not have to 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.
  • the moving speed, position, etc. of the movable platen 120 may be set instead of the moving speed, position, etc., of the crosshead 151 .
  • the mold clamping force may be set instead of the position of the crosshead (for example, mold clamping position) or the position of the movable platen.
  • the toggle mechanism 150 amplifies the driving force of the mold clamping motor 160 and transmits it to the movable platen 120 .
  • the amplification factor is also called toggle factor.
  • the toggle magnification changes according to the angle ⁇ formed between the first link 152 and the second link 153 (hereinafter also referred to as “link angle ⁇ ”).
  • the link angle ⁇ is obtained from the position of the crosshead 151 .
  • the toggle magnification becomes maximum.
  • the mold thickness is adjusted so that a predetermined mold clamping force can be obtained during mold clamping.
  • the distance L between the fixed platen 110 and the toggle support 130 is adjusted so that the link angle ⁇ of the toggle mechanism 150 becomes a predetermined angle when the movable mold 820 touches the fixed mold 810 . to adjust.
  • the mold clamping device 100 has a mold thickness adjusting mechanism 180.
  • the mold thickness adjustment mechanism 180 adjusts the mold thickness by adjusting the distance L between the stationary platen 110 and the toggle support 130 .
  • the timing of mold thickness adjustment is, for example, between the end of a molding cycle and the start of the next molding cycle.
  • the mold thickness adjusting mechanism 180 is, for example, a threaded shaft 181 formed at the rear end of the tie bar 140, a screw nut 182 held by the toggle support 130 so as to be rotatable and non-retractable, and screwed to the threaded shaft 181. and a mold thickness adjusting motor 183 that rotates the screw nut 182 .
  • a threaded shaft 181 and a threaded nut 182 are provided for each tie bar 140 .
  • the rotational driving force of the mold thickness adjusting motor 183 may be transmitted to the multiple screw nuts 182 via the rotational driving force transmission portion 185 .
  • Multiple screw nuts 182 can be rotated synchronously. By changing the transmission path of the rotational driving force transmission portion 185, it is also possible to rotate the plurality of screw nuts 182 individually.
  • the rotational driving force transmission section 185 is configured by, for example, gears.
  • a driven gear is formed on the outer circumference of each screw nut 182
  • a driving gear is attached to the output shaft of the mold thickness adjusting motor 183
  • an intermediate gear that meshes with a plurality of driven gears and the driving gear is formed in the central portion of the toggle support 130. rotatably held.
  • the rotational driving force transmission section 185 may be configured by a belt, a pulley, or the like instead of the gear.
  • the operation of the mold thickness adjusting mechanism 180 is controlled by the control device 700.
  • the control device 700 drives the mold thickness adjusting motor 183 to rotate the screw nut 182 .
  • the position of toggle support 130 with respect to tie bar 140 is adjusted, and the distance L between stationary platen 110 and toggle support 130 is adjusted.
  • a plurality of mold thickness adjusting mechanisms may be used in combination.
  • the interval L is detected using the mold thickness adjustment motor encoder 184.
  • the mold thickness adjusting motor encoder 184 detects the amount and direction of rotation of the mold thickness adjusting 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 and interval L of the toggle support 130 .
  • the toggle support position detector for detecting the position of the toggle support 130 and the gap detector for detecting the gap L are not limited to the mold thickness adjusting motor encoder 184, and general ones can be used.
  • the mold clamping device 100 may have a mold temperature controller that adjusts 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 .
  • the mold clamping device 100 of this embodiment is a horizontal type in which the mold opening/closing direction is horizontal, it may be a vertical type in which the mold opening/closing direction is a vertical direction.
  • the mold clamping device 100 of this embodiment has the mold clamping motor 160 as a drive source, the mold clamping motor 160 may be replaced by a hydraulic cylinder. Further, the mold clamping device 100 may have a linear motor for mold opening and closing and an electromagnet for mold clamping.
  • the moving direction of the movable platen 120 when the mold is closed (for example, the positive direction of the X axis) is defined as the front, and the moving direction of the movable platen 120 when the mold is opened (for example, X-axis negative direction) will be described as the rear.
  • the ejector device 200 is attached to the movable platen 120 and advances and retreats together with the movable platen 120 .
  • the ejector device 200 has an ejector rod 210 that ejects a molded product from the mold device 800 and a drive mechanism 220 that moves the ejector rod 210 in the moving direction of the movable platen 120 (X-axis direction).
  • the ejector rod 210 is disposed in a through hole of the movable platen 120 so that it can move back and forth.
  • the front end of ejector rod 210 contacts ejector plate 826 of movable mold 820 .
  • the front end of ejector rod 210 may or may not be connected to ejector plate 826 .
  • the drive mechanism 220 has, for example, an ejector motor and a motion conversion mechanism that converts the rotary motion of the ejector motor into the linear motion of the ejector rod 210 .
  • the motion conversion mechanism includes a threaded shaft and a threaded nut that screws onto the threaded shaft. Balls or rollers may be interposed between the screw shaft and the screw nut.
  • the ejector device 200 performs an ejecting process under the control of the control device 700 .
  • the ejector plate 826 is moved forward by advancing the ejector rod 210 from the standby position to the ejecting position at a set moving speed to eject the molded product.
  • the ejector motor is driven to retract the ejector rod 210 at the set movement speed, and the ejector plate 826 is retracted to the original standby position.
  • the position and moving speed of the ejector rod 210 are detected using, for example, an ejector motor encoder.
  • the ejector motor encoder detects rotation of the ejector motor and sends a signal indicating the detection result to the control device 700 .
  • 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.
  • the moving direction of the screw 330 during filling (for example, the negative direction of the X axis) is defined as the forward direction, and the moving direction of the screw 330 during metering is defined as the forward direction. (For example, the positive direction of the X-axis) will be described as the rear.
  • the injection device 300 is installed on a slide base 301 , and the slide base 301 is arranged to move forward and backward relative to the injection device frame 920 .
  • the injection device 300 is arranged to move back and forth 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.
  • the injection device 300 includes, for example, a cylinder 310 that heats the molding material, a nozzle 320 that is provided at the front end of the cylinder 310, a screw 330 that is rotatably arranged in the cylinder 310 so that it can move back and forth, and a screw that rotates. , an injection motor 350 for advancing and retreating the screw 330 , and a load detector 360 for detecting the load transmitted between the injection motor 350 and the screw 330 .
  • the cylinder 310 heats the molding material supplied inside from the supply port 311 .
  • the molding material includes, for example, resin.
  • the molding material is formed into, for example, a pellet shape and supplied to the supply port 311 in a solid state.
  • a supply port 311 is formed in the rear portion of the cylinder 310 .
  • a cooler 312 such as a water-cooled cylinder is provided on the outer circumference 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 ahead of the cooler 312 .
  • the cylinder 310 is divided into a plurality of zones in the axial direction of the cylinder 310 (for example, the X-axis direction).
  • a heater 313 and a temperature detector 314 are provided in each of the plurality of zones.
  • a set temperature is set for each of the plurality of zones, and the controller 700 controls the heater 313 so that the temperature detected by the temperature detector 314 becomes the set temperature.
  • the nozzle 320 is provided at the front end of the cylinder 310 and pressed against the mold device 800 .
  • a heater 313 and a temperature detector 314 are provided around the nozzle 320 .
  • the controller 700 controls the heater 313 so that the detected temperature of the nozzle 320 becomes the set temperature.
  • the screw 330 is arranged in the cylinder 310 so as to be rotatable and advanceable.
  • the molding material is sent forward along the helical groove of the screw 330 .
  • the molding material is gradually melted by the heat from the cylinder 310 while being fed forward.
  • the screw 330 is retracted as liquid molding material is fed forward of the screw 330 and accumulated at the front of the cylinder 310 . After that, when the screw 330 is advanced, the liquid molding material accumulated in front of the screw 330 is injected from the nozzle 320 and filled in the mold device 800 .
  • a backflow prevention ring 331 is movably attached to the front of the screw 330 as a backflow prevention valve that prevents backflow of the molding material from the front to the rear of the screw 330 when the screw 330 is pushed forward.
  • the anti-backflow ring 331 is pushed backward by the pressure of the molding material in front of the screw 330 when the screw 330 is advanced, and is relatively to the screw 330 until it reaches a closed position (see FIG. 2) that blocks the flow path of the molding material. fall back. This prevents the molding material accumulated in front of the screw 330 from flowing backward.
  • the anti-backflow ring 331 is pushed forward by the pressure of the molding material sent forward along the helical groove of the screw 330 when the screw 330 is rotated, and is in an open position where the flow path of the molding material is opened. (see FIG. 1) relative to the screw 330. Thereby, the molding material is sent forward of the screw 330 .
  • the anti-backflow ring 331 may be either a co-rotating type that rotates together with the screw 330 or a non-co-rotating type that does not rotate together with the screw 330 .
  • the injection device 300 may have a drive source that advances and retracts the backflow prevention ring 331 with respect to the screw 330 between the open position and the closed position.
  • 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 may be, for example, a hydraulic pump.
  • the injection motor 350 moves the screw 330 forward and backward. Between the injection motor 350 and the screw 330, a motion conversion mechanism or the like that converts the rotary 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 screwed onto 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 retreating the screw 330 is not limited to the injection motor 350, and may be, for example, a hydraulic cylinder.
  • a 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 a load transmission path between the injection motor 350 and the screw 330 and detects the load acting on the load detector 360 .
  • the load detector 360 sends a detected load signal 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, the pressure received by the screw 330 from the molding material, the back pressure on the screw 330, and the pressure acting on the molding material from the screw 330. Used for control and monitoring of pressure, etc.
  • the pressure detector that detects the pressure of the molding material is not limited to the load detector 360, and a general one can be used.
  • a nozzle pressure sensor or a mold internal pressure sensor may be used.
  • a nozzle pressure sensor is installed at the nozzle 320 .
  • the mold internal pressure sensor is installed inside the mold apparatus 800 .
  • the injection device 300 Under the control of the control device 700, the injection device 300 performs a weighing process, a filling process, a holding pressure process, and the like.
  • the filling process and the holding pressure process may collectively be called an injection process.
  • the weighing motor 340 is driven to rotate the screw 330 at a set rotation speed, and the molding material is fed forward along the helical groove of the screw 330. Along with this, the molding material is gradually melted.
  • the screw 330 is retracted as liquid molding material is fed forward of the screw 330 and accumulated at the front of the cylinder 310 .
  • the rotation speed of the screw 330 is detected using a metering motor encoder 341, for example.
  • Weighing motor encoder 341 detects the rotation of weighing motor 340 and sends a signal indicating the detection result to control device 700 .
  • the screw rotation speed detector for detecting the rotation speed of the screw 330 is not limited to the metering motor encoder 341, and a general one can be used.
  • the injection motor 350 may be driven to apply a set back pressure to the screw 330 in order to limit rapid retraction of the screw 330 .
  • the back pressure on the screw 330 is detected using a load detector 360, for example.
  • the metering process is completed when the screw 330 is retracted to the metering completion position and a predetermined amount of molding material is accumulated in front of the screw 330 .
  • the position and rotation speed of the screw 330 in the weighing process are collectively set as a series of setting conditions. For example, a weighing start position, rotation speed switching position, and weighing completion position are set. These positions are arranged in this order from the front side to the rear side, and represent the start point and end point of the section in which the rotational speed is set. A rotation speed is set for each section.
  • the rotational speed switching position may be one or plural. The rotation speed switching position does not have to be set. Also, the back pressure is set for each section.
  • the injection motor 350 is driven to advance the screw 330 at a set movement 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 an injection motor encoder 351, for example.
  • the injection motor encoder 351 detects rotation of the injection motor 350 and sends a signal indicating the detection result to the control device 700 .
  • V/P switching switching from the filling process to the holding pressure process
  • the position at which V/P switching takes place is also called the V/P switching position.
  • the set moving speed of the screw 330 may be changed according to the position of the screw 330, time, and the like.
  • the position and movement speed of the screw 330 in the filling process are collectively set as a series of setting conditions.
  • a filling start position also called an “injection start position”
  • a moving speed switching position and a V/P switching position are set. These positions are arranged in this order from the rear side to the front side, and represent the start point and end point of the section for which the movement speed is set.
  • a moving speed is set for each section.
  • the moving speed switching position may be one or plural. The moving speed switching position does not have to be set.
  • the upper limit value of the pressure of the screw 330 is set for each section in which the moving speed of the screw 330 is set.
  • the pressure of screw 330 is detected by load detector 360 .
  • the screw 330 is advanced at the set travel speed.
  • the screw 330 exceeds the set pressure, the screw 330 is advanced at a moving speed slower than the set moving speed so that the pressure of the screw 330 is equal to or less than the set pressure for the purpose of mold protection.
  • 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 slowly advanced or slowly retracted. Further, 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.
  • 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.
  • the remaining molding material is pushed toward the mold device 800 .
  • a shortage of molding material due to cooling shrinkage in the mold apparatus 800 can be replenished.
  • the holding pressure is detected using the load detector 360, for example.
  • the set value of the holding pressure may be changed according to the elapsed time from the start of the holding pressure process.
  • a plurality of holding pressures and holding times for holding the holding pressure in the holding pressure step may be set respectively, and may be collectively set as a series of setting conditions.
  • the molding material in the cavity space 801 inside the mold device 800 is gradually cooled, and when the holding pressure process is completed, the entrance of the cavity space 801 is closed with the solidified molding material. This state is called a gate seal, and prevents the molding material from flowing back from the cavity space 801 .
  • the cooling process is started. In the cooling process, the molding material inside the cavity space 801 is solidified. A metering step may be performed during the cooling step for the purpose of shortening the molding cycle time.
  • the injection device 300 of this embodiment is of the in-line screw system, it may be of the pre-plasticization system or the like.
  • a pre-plastic injection apparatus supplies molding material melted in a plasticizing cylinder to an injection cylinder, and injects the molding material from the injection cylinder into a mold apparatus.
  • a screw is arranged to be rotatable and non-retractable, or a screw is arranged to be rotatable and reciprocal.
  • a plunger is arranged in the injection cylinder so that it can move back and forth.
  • the injection device 300 of the present embodiment is a horizontal type in which the axial direction of the cylinder 310 is horizontal, but may be a vertical type in which the axial direction of the cylinder 310 is vertical.
  • the mold clamping device combined with the vertical injection device 300 may be either vertical or horizontal.
  • the mold clamping device combined with the horizontal injection device 300 may be horizontal or vertical.
  • the moving direction of the screw 330 during filling (for example, the negative direction of the X-axis) is defined as forward, and the moving direction of the screw 330 during weighing (eg, the positive direction of the X-axis). is described as backward.
  • the moving device 400 advances and retreats the injection device 300 with respect to the mold device 800 . Further, the moving device 400 presses the nozzle 320 against the mold device 800 to generate 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.
  • the hydraulic pump 410 has a first port 411 and a second port 412 .
  • Hydraulic pump 410 is a pump that can rotate in both directions, and by switching the rotation direction of motor 420, hydraulic fluid (for example, oil) is sucked from one of first port 411 and second port 412 and discharged from the other. to generate hydraulic pressure.
  • the hydraulic pump 410 can also suck the working fluid from the tank and discharge the working fluid from either the first port 411 or the second port 412 .
  • the motor 420 operates the hydraulic pump 410 .
  • Motor 420 drives hydraulic pump 410 with a rotational direction and rotational torque according to a control signal from control device 700 .
  • Motor 420 may be an electric motor or may be an electric servomotor.
  • the hydraulic cylinder 430 has a cylinder body 431 , a piston 432 and a piston rod 433 .
  • the cylinder body 431 is fixed with respect 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.
  • Piston rod 433 is fixed relative to stationary platen 110 .
  • 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 .
  • the hydraulic fluid discharged from the first port 411 is supplied to the front chamber 435 through the first flow path 401, thereby pushing the injection device 300 forward.
  • the injection device 300 is advanced and the nozzle 320 is pressed against the stationary mold 810 .
  • the front chamber 435 functions as a pressure chamber that generates nozzle touch pressure of the nozzle 320 by the pressure of the hydraulic fluid supplied from the hydraulic pump 410 .
  • 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 .
  • the hydraulic fluid discharged from the second port 412 is supplied to the rear chamber 436 of the hydraulic cylinder 430 through the second flow path 402, thereby pushing the injection device 300 rearward.
  • the injection device 300 is retracted and the nozzle 320 is separated from the stationary mold 810 .
  • the moving device 400 includes the hydraulic cylinder 430 in this embodiment, the present invention is not limited to this.
  • an electric motor and a motion conversion mechanism that converts the rotary motion of the electric motor to the linear motion of the injection device 300 may be used instead of the hydraulic cylinder 430.
  • the control device 700 is composed of, 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.
  • the control device 700 performs various controls by causing the CPU 701 to execute programs stored in the storage medium 702 .
  • the control device 700 also receives signals from the outside through an input interface 703 and transmits signals to the outside through an output interface 704 .
  • the control device 700 repeatedly performs a weighing process, a mold closing process, a pressurizing process, a mold clamping process, a filling process, a holding pressure process, a cooling process, a depressurizing process, a mold opening process, and an ejecting process, thereby producing a molded product.
  • a series of operations for obtaining a molded product for example, the operation from the start of the weighing process to the start of the next weighing process, is also called “shot” or "molding cycle”.
  • the time required for one shot is also called “molding cycle time" or "cycle time”.
  • a single molding cycle has, for example, a weighing process, a mold closing process, a pressurization process, a mold clamping process, a filling process, a holding pressure process, a cooling process, a depressurization process, a mold opening process, and an ejection process in this order.
  • the order here is the order of the start of each step.
  • the filling process, holding pressure process, and cooling process are performed during the clamping process.
  • the start of the clamping process may coincide with the start of the filling process. Completion of the depressurization process coincides with the start of the mold opening process.
  • a plurality of processes may be performed simultaneously for the purpose of shortening the molding cycle time.
  • the metering step may occur during the cooling step of the previous molding cycle and may occur during the clamping step.
  • the mold closing process may be performed at the beginning of the molding cycle.
  • the filling process may also be initiated during the mold closing process.
  • the ejecting process may be initiated during the mold opening process. If an on-off valve for opening and closing the flow path of the nozzle 320 is provided, the mold opening process may be initiated during the metering process. This is because the molding material does not leak from the nozzle 320 as long as the on-off valve closes the flow path of the nozzle 320 even if the mold opening process is started during the metering process.
  • One molding cycle includes processes other than the weighing process, mold closing process, pressurization process, mold clamping process, filling process, holding pressure process, cooling process, depressurization process, mold opening process, and ejection process.
  • a pre-measuring suck-back process may be performed in which the screw 330 is retracted to a preset measuring start position before starting the measuring process. It is possible to reduce the pressure of molding material accumulated in front of the screw 330 before the start of the metering process, and to prevent the screw 330 from abrupt retraction at the start of the metering process.
  • a post-weighing suck-back process may be performed in which the screw 330 is retracted to a preset filling start position (also referred to as an "injection start position").
  • a preset filling start position also referred to as an "injection start position”
  • the pressure of the molding material accumulated in front of the screw 330 before the start of the filling process can be reduced, and leakage of the molding material from the nozzle 320 before the start of the filling process can be prevented.
  • the control device 700 is connected to an operation device 750 that receives user input operations and a display device 760 that displays screens.
  • the operation device 750 and the display device 760 may be configured by, for example, a touch panel 770 and integrated.
  • a touch panel 770 as a display device 760 displays a screen under the control of the control device 700 .
  • Information such as the settings of the injection molding machine 1 and the current state of the injection molding machine 1 may be displayed on the screen of the touch panel 770 .
  • an operation unit such as a button for receiving an input operation by the user or an input field may be displayed.
  • a 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 .
  • the user can operate the operation unit provided on the screen while confirming the information displayed on the screen to set the injection molding machine 1 (including input of set values). can.
  • the user can operate the operation unit provided on the screen to cause the injection molding machine 1 to perform the operation corresponding to the operation unit.
  • the operation of the injection molding machine 1 may be, for example, the operation (including stopping) of the mold clamping device 100, the ejector device 200, the injection device 300, the moving device 400, and the like.
  • the operation of the injection molding machine 1 may be switching of screens displayed on the touch panel 770 as the display device 760 .
  • the operating device 750 and the display device 760 of the present embodiment have been described as integrated as the touch panel 770, they may be provided independently. Also, a plurality of operating devices 750 may be provided. The operating device 750 and the display device 760 are arranged on the operating side (Y-axis negative direction) of the mold clamping device 100 (more specifically, the stationary platen 110).
  • FIG. 3 is a perspective view of the movable platen 120.
  • FIG. 4 is a perspective view of the movable platen 120.
  • FIG. 5 is a front view of the movable platen 120.
  • FIG. 6 is a side view of the movable platen 120.
  • FIG. 7 is a rear view of the movable platen 120.
  • FIG. FIG. 8 is a top view of the movable platen 120.
  • FIG. In the following description when the movable platen 120 is viewed from the front, the left and right directions are also referred to as anti-operation directions (anti-operation directions) ( ⁇ Y-axis directions).
  • the Y-axis negative direction side is the operation side
  • the Y-axis positive direction side is the non-operation side.
  • the front-rear direction is also referred to as the mold opening/closing direction ( ⁇ X-axis direction).
  • the upward direction is also referred to as the vertical direction (+Z-axis direction).
  • the movable platen 120 includes a mold mounting plate 121, a support table 122, a pair of inclined portions 123, a pair of toggle pin connection portions 124, a pair of frame portions 125, a pair of leg portions 126, and a stopper bolt mounting portion. 127 and .
  • a movable mold 820 is attached to a mold mounting portion (mold mounting surface) 121 a of the mold mounting plate 121 .
  • Penetration portions 121b through which the tie bars 140 are inserted are provided at the four corners of the mold mounting plate 121 .
  • the support base 122 is provided in the center of the back surface of the mold mounting plate 121 .
  • the pair of inclined portions 123 are provided vertically from the center of the mold mounting plate 121 when viewed from the side. One end of the inclined portion 123 is connected to the support base 122 and the other end of the inclined portion 123 is connected to the toggle pin connection portion 124 .
  • the inclined portion 123 is inclined toward the center in the mold opening/closing direction. In other words, the pair of inclined portions 123 are formed such that the width in the vertical direction becomes narrower from the other end side (the toggle pin connection portion 124 side) toward the one end side (the support base 122 side).
  • the pair of toggle pin connection portions 124 are provided vertically from the center of the mold mounting plate 121 when viewed from the side.
  • the toggle pin connecting portion 124 is connected to the first link 152 via a connecting pin.
  • the mold clamping force of the mold clamping device 100 is transmitted from the toggle pin connection portion 124 to the center of the back surface of the mold mounting plate 121 via the inclined portion 123 and the support base 122 .
  • the inclined portion 123, the support base 122, and the mold mounting plate 121 form a connecting portion that connects the toggle pin connecting portion 124 to the mold mounting portion 121a to form a mold clamping force transmission path.
  • the pair of frame portions 125 are provided in the operation counter-operation direction from the center of the mold mounting plate 121 when viewed from the rear.
  • the frame portion 125 is provided so as to connect the other end sides of the pair of inclined portions 123 arranged vertically.
  • the frame portion 125 receives a force in the pulling direction, and suppresses the vertical spread of the other end sides of the pair of inclined portions 123 .
  • the leg portion 126 has a mounting portion 126a to which a slider that slides on the guide 101 is mounted.
  • the mounting portion 126a has a connection portion 126b connected to the mold mounting plate 121 on one side in the mold opening/closing direction.
  • the mounting portion 126a has a connection portion 126c connected to the inclined portion 123 on the other side in the mold opening/closing direction.
  • the connecting portion 126c is provided with a through portion 126d through which the tie bar 140 passes.
  • one inclined portion 123 is provided with a stopper bolt mounting portion 127 for mounting a stopper bolt (not shown) for stopping the movement of the movable platen 120 .
  • a stopper bolt (not shown) for stopping the movement of the movable platen 120 .
  • the movable platen 120 is provided with mounting portions for mounting various mounting parts.
  • the inclined surface S1 which is the upper surface of the upper inclined portion 123, is provided with a branch portion 11 protruding from the inclined surface S1.
  • the branch portion 11 is formed with a screw hole (mounting portion) 11a for bolting a mounting component (for example, a distribution valve).
  • the screw hole 11a is provided at a position different from the mold clamping force transmission path from the toggle pin connection portion 124 to the mold mounting portion 121a.
  • the screw hole 11a is formed so as not to reach the inclined surface S1. That is, the connecting portion is connected to the other end (first end) of the inclined portion 123 connected to the toggle pin connecting portion 124 and the first end connected to the mold mounting portion 121a.
  • the inclined surface S1 is inclined downward toward the front.
  • the branch portion 11 includes a triangular plate when viewed in the Y-axis direction, and includes a horizontal upper surface, a vertical front surface, and a rear surface that slopes downward toward the front.
  • the screw hole 11a is formed in the upper surface of the branch portion 11 and extends downward.
  • a lower end of the screw hole 11a is located above the inclined surface S1.
  • a gap is formed between the front surface of the branch portion 11 and the rear surface of the mold mounting plate 121 .
  • the upper surface of the branch portion 11 is positioned below, for example, the upper surface of the mold mounting plate 121 and the upper surface of the toggle pin connection portion 124 .
  • the branch portion 11 is provided, for example, at the center of the inclined portion 123 in the left-right direction.
  • the mold clamping device 100 when a mold clamping force is generated in the mold clamping device 100, it is possible to avoid concentration of stress on the screw hole 11a provided in the branch portion 11. In addition, stress concentration can be avoided and strength can be easily ensured, and the degree of freedom in designing the connecting portion forming the mold clamping force transmission path can be improved. In addition, the transmission of the mold clamping force can be made uniform between the upper inclined portion 123 and the lower inclined portion 123, and the uniformity of the surface pressure distribution can be improved. In addition, it is possible to prevent the strength and quality (uniformity of mold clamping force) of the movable platen 120 from being affected even if the screw holes 11a are additionally machined or modified.
  • a branch portion 12 protruding from the side surface S2 is provided on the side surface S2 of the frame portion 125 on the counter-operation side (the side surface S2 on the Y-axis positive direction side).
  • the branch portion 12 is formed with a screw hole (mounting portion) 12a for bolting a mounting component (for example, a motor holding bracket of the ejector device 200).
  • the screw hole 12a is provided at a position different from the mold clamping force transmission path from the toggle pin connecting portion 124 to the mold mounting portion 121a. Also, when the mold clamping force is generated, it is formed so as not to reach the side surface S2 of the frame portion 125 which receives the force in the pulling direction.
  • the connecting portion is connected to the other end (first end) of the inclined portion 123 connected to the toggle pin connecting portion 124 and the first end connected to the mold mounting portion 121a. It has a mold mounting plate 121 (second end) that forms a transmission path, and a branch portion 12 (third end) of a frame portion 125 that branches off from the transmission path. It has a screw hole 12a (mounting portion) for mounting.
  • the branch portion 12 includes a plate which is L-shaped when viewed in the Z-axis direction as shown in FIG. 8 and T-shaped when viewed in the Y-axis direction as shown in FIG. As shown in FIG.
  • the screw hole 12a is formed in the side surface of the branch portion 12 opposite to the frame portion 125 (positive Y-axis direction) and extends in the negative Y-axis direction.
  • the tip of the screw hole 12 a is positioned outside the frame portion 125 .
  • the upper surface of the branch portion 12 is flush with the upper surface of the frame portion 125, for example.
  • the branch portion 12 and the threaded hole 12a are arranged on the left-right direction outside (Y-axis positive direction side) of the imaginary straight line connecting the pair of upper and lower toggle pin connection portions 124 .
  • the mold clamping device 100 when a mold clamping force is generated in the mold clamping device 100, it is possible to avoid concentration of stress on the screw hole 12a provided in the branch portion 12. In addition, stress concentration can be avoided and strength can be easily ensured, and the degree of freedom in design can be improved. In addition, the tensile force can be made uniform between the frame portion 125 in the operation direction and the counter-operation direction. Thereby, twisting of the inclined portion 123 can be prevented, and the uniformity of the surface pressure distribution of the mold clamping force can be improved. In addition, it is possible to prevent the strength and quality (uniformity of mold clamping force) of the movable platen 120 from being affected even if the screw holes 12a are additionally machined or modified.
  • a branch portion 13 protruding from the side surface S3 is provided on the side surface S3 of the frame portion 125 on the counter-operation side (the side surface S3 on the Y-axis positive direction side).
  • the branch portion 13 is formed with a screw hole (mounting portion) 13a for bolting a mounting component (for example, a bracket that holds a cableveyor (registered trademark)).
  • the branch portion 13 includes a rectangular plate when viewed in the X-axis direction, as shown in FIG.
  • the screw hole 13a is formed in the side surface of the branch portion 13 opposite to the frame portion 125 (positive Y-axis direction) and extends in the negative Y-axis direction.
  • the branch portion 13 and the screw hole 13a are arranged on the left-right direction outside (Y-axis positive direction side) of the imaginary straight line connecting the pair of upper and lower toggle pin connection portions 124 .
  • a branch portion 14 protruding from the side surface S4 is provided on the side surface S4 (the side surface S4 on the Y-axis negative direction side) of the frame portion 125 on the operation side.
  • the branch portion 14 is formed with a screw hole (mounting portion) 14a for bolting the mounting part.
  • the branch portion 14 includes a rectangular plate when viewed in the X-axis direction, as shown in FIG.
  • the screw hole 14a is formed in the side surface of the branch portion 14 opposite to the frame portion 125 (the Y-axis negative direction side) and extends in the Y-axis positive direction side.
  • the tip of the screw hole 14a is arranged on the left-right direction outside (Y-axis negative direction side) of an imaginary straight line connecting the pair of upper and lower toggle pin connection portions 124 .
  • a rear surface S5 of the frame portion 125 is provided with a branch portion 15 protruding from the rear surface S5.
  • the branch portion 15 is formed with a screw hole (mounting portion) 15a for bolting a mounting component (for example, an ejector device). As shown in FIG.
  • the branching portion 15 includes a right-angled trapezoidal plate when viewed in the X-axis direction, and includes an inclined surface that is inclined along the inner peripheral surface of the frame portion 125 .
  • a threaded hole 15a is formed in the rear surface of the branch portion 15 and extends forward.
  • the screw hole 15a is arranged on the left-right direction outside of the imaginary straight line connecting the pair of upper and lower toggle pin connection portions 124 .
  • the screw holes 13a and 14a are provided at positions different from the mold clamping force transmission path from the toggle pin connecting portion 124 to the mold mounting portion 121a. Further, as shown in FIG.
  • the screw hole 15a is provided at a position different from the mold clamping force transmission path from the toggle pin connecting portion 124 to the mold mounting portion 121a.
  • the connecting portion is connected to the other end (first end) of the inclined portion 123 connected to the toggle pin connecting portion 124 and the first end connected to the mold mounting portion 121a.
  • It has a mold mounting plate 121 (second end) forming a transmission path, and branch portions 13, 14, and 15 (third end) of a frame portion 125 branching from the transmission path, and a third end has threaded holes 13a, 14a, 15a (mounting portions) to which mounting parts are mounted.
  • the screw holes 13a, 14a, 15a in the branch portions 13, 14, 15 projecting from the side surfaces S3, S4, and the back surface S5 are inserted into the frame portion 125 side from the side surfaces S3, S4, and the back surface S5.
  • the screw holes 13a, 14a, 15a can be shortened. Thereby, stress concentration due to the screw holes 13a, 14a, 15a provided in the branch portions 13, 14, 15 can be reduced.
  • the upper surface S6 of the mold mounting plate 121 is provided with branch portions 16 and 17 protruding from the upper surface S6.
  • the branch portion 16 is formed with a screw hole (mounting portion) 16a for fixing a mounting component (for example, an eyebolt for lifting the movable platen 120).
  • the branch portion 16 includes a rectangular plate when viewed in the Z-axis direction, as shown in FIG.
  • a pair of branch portions 16 are provided at intervals in the left-right direction (Y-axis direction).
  • the pair of branch portions 16 are provided laterally outside the inclined portion 123 and the toggle pin connecting portion 124 .
  • a threaded hole 16a is formed in the upper surface of the branch portion 16 and extends downward.
  • the branch portion 17 is formed with a screw hole (mounting portion) 17a for bolting a mounting component (for example, an air device).
  • the branch portion 17 includes a rectangular plate when viewed in the Z-axis direction, as shown in FIG.
  • a pair of branch portions 17 are provided, for example, at intervals in the left-right direction (Y-axis direction).
  • a pair of branch portions 17 are provided between the pair of branch portions 16 .
  • the branch portion 17 is provided behind a center line that bisects the upper surface S6 of the mold mounting plate 121 in the front-rear direction (X-axis direction).
  • a screw hole 17a is formed in the upper surface of the branch portion 17 and extends downward.
  • the lower end of the screw hole 17a is arranged above the lower end of the toggle pin connecting portion 124, for example.
  • the mold clamping force is applied toward the mold mounting portion 121 a of the mold mounting plate 121 from the support base 122 provided in the center of the back surface of the mold mounting plate 121 .
  • the branch portions 16 and 17 provided on the upper surface S6 of the mold mounting plate 121 are provided at positions branched from the mold clamping force transmission path. That is, the connecting portion is connected to the other end (first end) of the inclined portion 123 connected to the toggle pin connecting portion 124 and the first end connected to the mold mounting portion 121a.
  • a branch portion 18 is provided on the side surface S8 of the mold mounting plate 121 on the operation side.
  • the branch portion 18 is formed with a screw hole (mounting portion) 18a for bolting a mounting component (for example, a connector holding bracket).
  • the screw hole 18a is provided behind a center line that bisects the side surface S8 of the mold mounting plate 121 in the front-rear direction (X-axis direction).
  • the screw hole 18a extends inward in the left-right direction (positive Y-axis direction) from the side surface S8.
  • the tip of the screw hole 18a is arranged, for example, on the left-right direction outer side (Y-axis negative direction side) of the support base 122 .
  • a branch portion 19 is provided on the side surface S9 of the mold mounting plate 121 on the non-operation side.
  • the branch portion 19 is formed with a screw hole (mounting portion) 19a for bolting a mounting component (for example, an outlet for mold temperature control, a thermocouple, a bracket for holding an air pipe or a water pipe).
  • the screw hole 19a is provided behind the center line that bisects the side surface S9 of the mold mounting plate 121 in the front-rear direction (X-axis direction), similarly to the screw hole 18a.
  • the screw hole 19a extends inward in the left-right direction (negative Y-axis direction) from the side surface S9.
  • the tip of the screw hole 19a is arranged, for example, on the left-right direction outer side (Y-axis positive direction side) of the support base 122 .
  • the mold clamping force is applied from the support base 122 provided at the center of the back surface of the mold mounting plate 121 toward the mold mounting portion 121a of the mold mounting plate 121.
  • the branch portions 18 and 19 provided on the side surfaces S8 and S9 of the mold mounting plate 121 are provided at positions branched from the mold clamping force transmission path. That is, the connecting portion is connected to the other end (first end) of the inclined portion 123 connected to the toggle pin connecting portion 124 and the first end connected to the mold mounting portion 121a.
  • the surface (second end) of the mold mounting plate 121 that forms the transmission path and the branch portions 18 and 19 (third end) of the side surfaces S8 and S9 of the mold mounting plate 121 branching from the transmission path are separated.
  • the third end has threaded holes 18a, 19a (mounting portions) to which mounting parts are mounted.
  • injection molding machine 100 mold clamping device 120 movable platen 121 mold mounting plate 121a mold mounting portion 122 support base 123 inclined portion 124 toggle pin connection portion 125 frame portion 126 leg portions 11 to 19 branch portions 11a to 19a screw holes (mounting portion )

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un plateau mobile qui supprime la concentration de contrainte.　Le plateau mobile comprend : une partie de liaison de broche à bascule ; une partie de montage de moule ; et une partie de liaison pour former un trajet de transmission pour une force de serrage de moule en reliant la partie de liaison de broche à bascule et la partie de montage de moule. La partie de liaison présente une première partie d'extrémité qui est reliée à la partie de liaison de broche à bascule, une deuxième partie d'extrémité qui est reliée à la partie de montage de moule pour former le trajet de transmission entre la première partie d'extrémité et la deuxième partie d'extrémité, et une troisième partie d'extrémité se ramifiant à partir du trajet de transmission. La troisième partie d'extrémité présente une partie de montage sur laquelle un composant de montage est monté.
PCT/JP2022/015703 2021-03-31 2022-03-29 Plateau mobile WO2022210791A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202280007794.7A CN116568427A (zh) 2021-03-31 2022-03-29 可动压板
JP2023511430A JPWO2022210791A1 (fr) 2021-03-31 2022-03-29

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021-062450 2021-03-31
JP2021062450 2021-03-31

Publications (1)

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WO2022210791A1 true WO2022210791A1 (fr) 2022-10-06

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PCT/JP2022/015703 WO2022210791A1 (fr) 2021-03-31 2022-03-29 Plateau mobile

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JP (1) JPWO2022210791A1 (fr)
CN (1) CN116568427A (fr)
WO (1) WO2022210791A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0447914A (ja) * 1990-06-16 1992-02-18 Fanuc Ltd コア駆動装置内蔵射出成形機
JP2005349836A (ja) * 2001-07-13 2005-12-22 Sumitomo Heavy Ind Ltd 射出成形機の可動金型支持装置
JP2007001047A (ja) * 2005-06-21 2007-01-11 Nissei Plastics Ind Co 射出成形機の横型型締装置
JP2016022658A (ja) * 2014-07-18 2016-02-08 東芝機械株式会社 開閉装置、成形装置および開閉装置の使用方法
JP2017061075A (ja) * 2015-09-24 2017-03-30 住友重機械工業株式会社 射出成形機

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0447914A (ja) * 1990-06-16 1992-02-18 Fanuc Ltd コア駆動装置内蔵射出成形機
JP2005349836A (ja) * 2001-07-13 2005-12-22 Sumitomo Heavy Ind Ltd 射出成形機の可動金型支持装置
JP2007001047A (ja) * 2005-06-21 2007-01-11 Nissei Plastics Ind Co 射出成形機の横型型締装置
JP2016022658A (ja) * 2014-07-18 2016-02-08 東芝機械株式会社 開閉装置、成形装置および開閉装置の使用方法
JP2017061075A (ja) * 2015-09-24 2017-03-30 住友重機械工業株式会社 射出成形機

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CN116568427A (zh) 2023-08-08

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