WO2022138776A1 - Molding machine - Google Patents

Molding machine Download PDF

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Publication number
WO2022138776A1
WO2022138776A1 PCT/JP2021/047729 JP2021047729W WO2022138776A1 WO 2022138776 A1 WO2022138776 A1 WO 2022138776A1 JP 2021047729 W JP2021047729 W JP 2021047729W WO 2022138776 A1 WO2022138776 A1 WO 2022138776A1
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WO
WIPO (PCT)
Prior art keywords
tie bar
mold
adjusting mechanism
fixed
closing direction
Prior art date
Application number
PCT/JP2021/047729
Other languages
French (fr)
Japanese (ja)
Inventor
眞 辻
博成 佐々木
俊昭 豊島
三郎 野田
Original Assignee
芝浦機械株式会社
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 芝浦機械株式会社 filed Critical 芝浦機械株式会社
Priority to MX2023007525A priority Critical patent/MX2023007525A/en
Priority to CN202180083164.3A priority patent/CN116801999A/en
Publication of WO2022138776A1 publication Critical patent/WO2022138776A1/en

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Classifications

    • 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
    • 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
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/80—Measuring, controlling or regulating of relative position of mould parts

Definitions

  • the present invention relates to a molding machine provided with an adjusting mechanism for adjusting the fixed position of the tie bar.
  • a molded product (die casting product) is manufactured by filling a cavity in a mold that has been molded using a toggle mechanism with molten metal using an injection device. If the mold clamping force is not properly controlled, the yield of the molded product may decrease. For example, if the mold clamping force is insufficient, burrs may occur and the yield may decrease. Further, if the mold clamping force is excessive, the molding machine and the mold may be damaged.
  • Patent Document 1 describes a mold clamping device that adjusts a mold clamping force by simultaneously rotating a plurality of tie bar nuts screwed into a plurality of tie bars.
  • the problem to be solved by the present invention is to provide a molding machine capable of independently adjusting the stress applied to a plurality of tie bars.
  • the molding machine is provided on the base, a fixed die plate fixed on the base and holding a fixed mold, and a movable mold provided on the base so as to be movable in the mold opening / closing direction.
  • a movable die plate that holds the fixed mold facing the fixed mold, a toggle mechanism that can fasten the fixed mold and the movable mold, and a toggle mechanism that can move the fixed mold and the movable mold in the opening / closing direction of the mold are provided on the base.
  • a link housing to which one end of the link of the toggle mechanism is fixed, a drive device for driving the toggle mechanism, and one end that can be fixed to the fixed die plate, extend in the opening / closing direction of the mold, and are engaged with the other end.
  • a first tie bar having a portion and a second tie bar whose one end can be fixed to the fixed die plate and which extends in the mold opening / closing direction and has an engaged portion at the other end, and one end fixed to the fixed die plate.
  • a third tie bar that extends in the mold opening / closing direction and has an engaged portion at the other end, and one end can be fixed to the fixed die plate, extends in the mold opening / closing direction, and has an engaged portion at the other end.
  • a third adjusting mechanism for adjusting the fixing position of the other end of the third tie bar, a fourth adjusting mechanism for adjusting the fixing position of the other end of the fourth tie bar, and fixing the molten metal is provided, and the first adjusting mechanism, the second adjusting mechanism, the third adjusting mechanism, and the fourth adjusting mechanism are provided.
  • Each of the adjusting mechanisms is an electric motor fixed to the link housing, a ring gear driven by the electric motor and capable of rotating around the tie bar in an annular shape, and the mold by the rotation of the ring gear. It includes a split nut device that can move in the opening / closing direction and can fix the engaged portion.
  • each of the first adjusting mechanism, the second adjusting mechanism, the third adjusting mechanism, and the fourth adjusting mechanism is concentrically fixed to the output shaft of the electric motor.
  • the engaged portion further comprises a pinion, the engaged portion has a first concavo-convex portion, and the split nut device has a split nut having a second concavo-convex portion that can be engaged with the first concavo-convex portion.
  • a support member that supports the split nut and surrounds the tie bar, is partially surrounded by the ring gear, and has a male screw portion in the part, and the ring gear is on the outer peripheral side. It is preferable to have a gear portion that meshes with the pinion and a female screw portion that meshes with the male screw portion on the inner peripheral side.
  • the pitch of the second uneven portion is larger than the pitch of the female screw portion, and the length of the second uneven portion in the mold opening / closing direction is the length of the female screw portion in the mold opening / closing direction. It is preferably smaller than the halfbeak.
  • the height of the second uneven portion is larger than the height of the female screw portion.
  • the thickness of the ring gear in the direction perpendicular to the mold opening / closing direction is continuously thinned toward the link housing in the mold opening / closing direction.
  • the molding machine of the above aspect further includes a control device that independently controls the first adjusting mechanism, the second adjusting mechanism, the third adjusting mechanism, and the fourth adjusting mechanism.
  • the first measuring instrument for measuring the stress applied to the first tie bar, the second measuring instrument for measuring the stress applied to the second tie bar, and the third tie bar are applied.
  • a third measuring instrument for measuring stress and a fourth measuring instrument for measuring the stress applied to the fourth tie bar are further provided, and the control device is the same as obtained during the first molding operation.
  • the control device is the same as obtained during the first molding operation. Based on the measurement results of the first measuring instrument, the second measuring instrument, the third measuring instrument, and the fourth measuring instrument, before the second molding operation following the first molding operation, It is preferable to control the first adjusting mechanism, the second adjusting mechanism, the third adjusting mechanism, and the fourth adjusting mechanism.
  • the control device is the first measuring instrument, the second measuring instrument, the third measuring instrument, and the fourth measuring instrument obtained in the first molding operation. Based on the measurement result of the measuring instrument, the first tie bar, the second tie bar, the third tie bar, and the fourth tie bar are performed before the second molding operation following the first molding operation.
  • the schematic diagram which shows the whole structure of the molding machine of an embodiment.
  • the schematic diagram of the molding machine of an embodiment The schematic diagram of the molding machine of an embodiment. Schematic cross-sectional view of the adjustment mechanism of the embodiment.
  • An explanatory diagram of the operation of the adjustment mechanism of the embodiment The flow chart of the molding operation of the molding machine of an embodiment.
  • the explanatory view of the molding operation using the molding machine of an embodiment The explanatory view of the molding operation using the molding machine of an embodiment.
  • the molding machine of the embodiment has a base, a fixed die plate fixed on the base and holding a fixed mold, and a movable mold provided on the base so as to be movable in the mold opening / closing direction.
  • a movable die plate that holds them facing each other, a toggle mechanism that can fasten the fixed mold and the movable mold, and a toggle mechanism that can be moved in the mold opening / closing direction on the base, and one end of the link of the toggle mechanism is fixed.
  • a second tie bar that can be fixed to the mold and extends in the mold opening / closing direction and has an engaged portion at the other end, and one end can be fixed to the fixed die plate and extends in the mold opening / closing direction and has an engaged portion at the other end. Adjust the fixing position of the third tie bar to be held, the fourth tie bar that can be fixed to the fixed die plate at one end, extends in the mold opening / closing direction, and has an engaged portion at the other end, and the other end of the first tie bar.
  • the first adjusting mechanism is provided with a fourth adjusting mechanism for adjusting the fixing position of the other end of the tie bar, and an injection device for filling the molten metal into the cavity formed by the fixed mold and the movable mold.
  • Each of the second adjusting mechanism, the third adjusting mechanism, and the fourth adjusting mechanism is driven by an electric motor fixed to the link housing and an electric motor, and can rotate around the tie bar in an annular shape surrounding the tie bar.
  • FIG. 1 is a schematic diagram showing the overall configuration of the molding machine of the embodiment.
  • FIG. 1 is a side view including a cross-sectional view in part.
  • FIG. 2 is a schematic view of the molding machine of the embodiment.
  • FIG. 2 is a side view of the molding machine as viewed from the link housing side.
  • FIG. 3 is a schematic view of the molding machine of the embodiment.
  • FIG. 3 is a cross section of AA'in FIG. FIG. 3 omits the illustration of the toggle mechanism.
  • the molding machine of the embodiment is a die casting machine.
  • the die casting machine 100 of the embodiment is a cold chamber type die casting machine.
  • FIGS. 1 to 3 show an initial state before the start of operation of the die casting machine 100.
  • the initial state in this case is a state in which the mold is fully opened, that is, a so-called mold opening state.
  • the die casting machine 100 manufactures a die casting product by injecting a liquid metal (molten metal) into the inside of the mold (hollow Ca in FIG. 1) and solidifying the liquid metal in the mold.
  • the metal is, for example, aluminum, an aluminum alloy, a zinc alloy, or a magnesium alloy.
  • the die casting machine 100 includes a base 10, a fixed die plate 12, a movable die plate 14, a link housing 16, a first tie bar 18a, a second tie bar 18b, a third tie bar 18c, a fourth tie bar 18d, and a fixed mold 20. , Movable mold 22, toggle mechanism 24, toggle moving mechanism 26, extrusion mechanism 28, tie bar fixing mechanism 29, first adjustment mechanism 30a, second adjustment mechanism 30b, third adjustment mechanism 30c, fourth adjustment mechanism. 30d, an injection device 32, a control device 34, a display device 35, a first measuring device 36a, a second measuring device 36b, a third measuring device 36c, and a fourth measuring device 36d.
  • first tie bar 18a, the second tie bar 18b, the third tie bar 18c, and the fourth tie bar 18d may be collectively referred to as the tie bar 18.
  • first adjusting mechanism 30a, the second adjusting mechanism 30b, the third adjusting mechanism 30c, and the fourth adjusting mechanism 30d may be collectively referred to as the adjusting mechanism 30.
  • first measuring instrument 36a, the second measuring instrument 36b, the third measuring instrument 36c, and the fourth measuring instrument 36d may be collectively referred to as the measuring instrument 36.
  • the toggle mechanism 24 includes a mold clamping motor 40 (driving device), a first screw shaft 42, a crosshead 44, and a plurality of links 46.
  • the mold clamping motor 40 is an example of a drive device.
  • the mold clamping motor 40 is, for example, an electric motor.
  • the toggle moving mechanism 26 includes a toggle moving motor 50, a second screw shaft 52, a nut portion 54, and a guide rail 55.
  • the toggle moving motor 50 is, for example, an electric motor.
  • the extrusion mechanism 28 includes an extrusion motor 56, an extrusion plate 58, an extrusion shaft 60, a pin support plate 62, and an extrusion pin 64.
  • the tie bar fixing mechanism 29 includes, for example, a half nut.
  • the injection device 32 has a sleeve 74, a plunger 76, an injection drive unit 78, and a position sensor 80.
  • the plunger 76 includes a plunger tip 76a and a plunger rod 76b.
  • the sleeve 74 is provided with an opening 82.
  • the fixed die plate 12 is fixed on the base 10.
  • a fixed mold 20 can be attached to the fixed die plate 12.
  • the movable die plate 14 is provided on the base 10 so as to be movable in the mold opening / closing direction.
  • the mold opening / closing direction means both the mold opening direction and the mold closing direction shown in FIG. 1 and the like.
  • the movable die plate 14 moves on the guide rail 55 provided on the base 10 in the mold opening / closing direction.
  • a movable mold 22 can be attached to the movable die plate 14.
  • the link housing 16 is provided on the base 10 so as to be movable in the mold opening / closing direction.
  • the link housing 16 moves on the guide rail 55 provided on the base 10 in the mold opening / closing direction.
  • One end of a part of the plurality of links 46 is fixed to the link housing 16.
  • the toggle mechanism 24 is provided between the link housing 16 and the movable die plate 14.
  • One end of a part of the plurality of links 46 is fixed to the link housing 16. Further, one end of another part of the plurality of links 46 is fixed to the movable die plate 14.
  • the toggle mechanism 24 changes the distance between the link housing 16 and the movable die plate 14.
  • the toggle mechanism 24 makes it possible to fasten the fixed mold 20 and the movable mold 22.
  • the toggle mechanism 24 is driven by, for example, a mold clamping motor 40.
  • the mold clamping motor 40 rotates the first screw shaft 42, so that the crosshead 44 moves in the mold opening / closing direction.
  • the plurality of links 46 operate, and the movable die plate 14 moves in the mold opening / closing direction relative to the link housing 16.
  • the toggle mechanism 24 may be driven by using, for example, a hydraulic cylinder.
  • the first tie bar 18a, the second tie bar 18b, the third tie bar 18c, and the fourth tie bar 18d extend in the mold opening / closing direction.
  • One end of the tie bar 18 can be fixed to the fixed die plate 12.
  • the tie bar 18 penetrates the fixed die plate 12, the movable die plate 14, and the link housing 16.
  • the tie bar 18 is slidable with respect to the movable die plate 14.
  • the tie bar 18 is slidable with respect to the fixed die plate 12 and the link housing 16 in the unfixed state.
  • the tie bar 18 supports the mold clamping force while the mold clamping force is applied to the fixed mold 20 and the movable mold 22.
  • the tie bar fixing mechanism 29 is fixed to the fixed die plate 12.
  • the tie bar 18 can be fixed or non-fixed (released) to the fixed die plate 12 by using the tie bar fixing mechanism 29.
  • the tie bar fixing mechanism 29 fixes the tie bar 18 at a desired position.
  • the tie bar fixing mechanism 29 fixes the tie bar 18 to the fixing die plate 12 by using, for example, a half nut.
  • the tie bar fixing mechanism 29 may be, for example, a screw.
  • An engaged portion 18x is provided at the other end of the tie bar 18.
  • the other end of the tie bar 18 can be fixed to the split nut device 92.
  • the engaged portion 18x of the tie bar 18 has a first uneven portion 18xx.
  • the first uneven portion 18xx has, for example, a tapered shape.
  • the extrusion mechanism 28 has a function of extruding the manufactured die-cast product from the mold and separating it.
  • One end of the extrusion shaft 60 extending in the mold closing direction is fixed to the extrusion plate 58.
  • the extrusion shaft 60 penetrates the movable die plate 14.
  • the extrusion shaft 60 is slidable with respect to the movable die plate 14.
  • the other end of the extrusion shaft 60 is fixed to the pin support plate 62.
  • the extrusion pin 64 is fixed to the pin support plate 62.
  • the extrusion pin 64 is provided on the movable mold 22 so as to be able to appear and disappear.
  • the extrusion pin 64 extends in the mold closing direction. For example, a plurality of extrusion pins 64 are provided.
  • the extrusion pin 64 moves in the mold opening / closing direction.
  • the first measuring instrument 36a measures the stress applied to the first tie bar 18a during mold clamping.
  • the second measuring instrument 36b measures the stress applied to the second tie bar 18b during mold clamping.
  • the third measuring instrument 36c measures the stress applied to the third tie bar 18c during mold clamping.
  • the fourth measuring instrument 36d measures the stress applied to the fourth tie bar 18d during mold clamping.
  • the measuring instrument 36 measures, for example, the elongation of the tie bar 18, and converts the measured elongation into tensile stress. Using the first measuring instrument 36a, the second measuring instrument 36b, the third measuring instrument 36c, and the fourth measuring instrument 36d, the first tie bar 18a, the second tie bar 18b, and the third tie bar 18c, And it is possible to independently measure the stress applied to the fourth tie bar 18d during mold clamping.
  • the first adjusting mechanism 30a, the second adjusting mechanism 30b, the third adjusting mechanism 30c, and the fourth adjusting mechanism 30d are fixed to the link housing 16.
  • the first adjusting mechanism 30a adjusts the fixed position of the first tie bar 18a.
  • the second adjusting mechanism 30b adjusts the fixed position of the second tie bar 18b.
  • the third adjusting mechanism 30c adjusts the fixed position of the third tie bar 18c.
  • the fourth adjusting mechanism 30d adjusts the fixed position of the fourth tie bar 18d.
  • FIG. 4 is a schematic cross-sectional view of the adjustment mechanism of the embodiment.
  • Each of the first adjusting mechanism 30a, the second adjusting mechanism 30b, the third adjusting mechanism 30c, and the fourth adjusting mechanism 30d has a structure similar to the structure shown in FIG.
  • the adjusting mechanism 30 includes a motor 86 (motor), a pinion 88, a ring gear 90, a split nut device 92, an actuator 93, a first tie bar guide 94, and a second tie bar guide 95.
  • the motor 86 is an example of an electric motor.
  • the motor 86 has an output shaft 86a.
  • the split nut device 92 has a split nut 92a and a support member 92b.
  • the engaged portion 18x of the tie bar 18 has a first uneven portion 18xx.
  • the split nut 92a has a second uneven portion 92ax.
  • the support member 92b has a male screw portion 92bx.
  • the ring gear 90 has a gear portion 90x and a female thread portion 90y.
  • the motor 86 is fixed to the link housing 16.
  • the motor 86 has an output shaft 86a.
  • the output shaft 86a is, for example, parallel to the mold opening / closing direction.
  • the pinion 88 is concentrically fixed to the output shaft 86a.
  • the pinion 88 is, for example, a so-called external gear and spur gear.
  • the pinion 88 has a plurality of teeth cut in the mold opening / closing direction on the outer periphery. The pinion 88 rotates around the output shaft 86a together with the output shaft 86a.
  • the ring gear 90 is annular.
  • the ring gear 90 surrounds the tie bar 18.
  • the ring gear 90 surrounds the support member 92b of the split nut device 92.
  • the ring gear 90 has a gear portion 90x that meshes with the pinion 88 on the outer peripheral side.
  • the gear portion 90x has a plurality of teeth cut in the mold opening / closing direction on the outer periphery.
  • the ring gear 90 can rotate around the tie bar 18 as the pinion 88 rotates.
  • the ring gear 90 is driven by a motor 86 via a pinion 88.
  • the pinion 88 and the ring gear 90 can be relatively moved in the mold opening / closing direction, for example, while maintaining meshing.
  • the ring gear 90 has a female threaded portion 90y on the inner peripheral side.
  • the female threaded portion 90y meshes with the male threaded portion 92bx provided on the support member 92b.
  • the pitch of the female threaded portion 90y in the mold opening / closing direction is, for example, 5 mm or more and 20 mm or less.
  • the thickness of the ring gear 90 in the direction perpendicular to the mold opening / closing direction becomes continuously thinner toward the link housing 16 in the opening / closing direction, for example.
  • the engaged portion 18x of the tie bar 18 has a first uneven portion 18xx.
  • the pitch of the first uneven portion 18xx in the mold opening / closing direction is, for example, 20 mm or more and 100 mm or less.
  • the split nut device 92 can fix the engaged portion 18x of the tie bar 18.
  • the split nut device 92 can be moved in the mold opening / closing direction by the rotation of the ring gear 90.
  • the split nut 92a is, for example, a half nut in which the nut is split into two.
  • the split nut 92a has a second uneven portion 92ax.
  • the second uneven portion 92ax faces the first uneven portion 18xx.
  • the second uneven portion 92ax can engage with the first uneven portion 18xx.
  • the tie bar 18 is fixed to the split nut device 92.
  • the second uneven portion 92ax has, for example, a tapered shape.
  • the pitch of the second uneven portion 92ax in the mold opening / closing direction is, for example, 20 mm or more and 100 mm or less.
  • the pitch of the second uneven portion 92ax in the mold opening / closing direction is larger than the pitch of the female screw portion 90y in the mold opening / closing direction, for example.
  • the height of the second uneven portion 92ax is larger than the height of the female screw portion 90y, for example.
  • the height of the second uneven portion 92ax is the length from the bottom of the concave portion of the second uneven portion 92ax to the top of the convex portion in the direction perpendicular to the mold opening / closing direction.
  • the height of the female threaded portion 90y is the length of the female threaded portion 90y from the bottom of the thread groove to the top of the thread in the direction perpendicular to the mold opening / closing direction.
  • the length of the second uneven portion 92ax in the mold opening / closing direction (L2 in FIG. 4) is smaller than, for example, the length of the female screw portion 90y in the mold opening / closing direction (L1 in FIG. 4).
  • the support member 92b supports the split nut 92a.
  • the split nut 92a is slidably supported by the support member 92b in a direction perpendicular to the mold opening / closing direction.
  • the support member 92b surrounds the tie bar 18.
  • the support member 92b is annular.
  • a part of the support member 92b is surrounded by the ring gear 90.
  • a part of the support member 92b has a male screw portion 92bx.
  • the male threaded portion 92bx meshes with the female threaded portion 90y of the ring gear 90.
  • the actuator 93 has a function of moving the split nut 92a in a direction perpendicular to the mold opening / closing direction. Using the actuator 93, the second uneven portion 92ax of the split nut 92a is engaged with the first uneven portion 18xx.
  • the actuator 93 can be used to bring the tie bar 18 into a fixed or non-fixed (released) state with respect to the adjusting mechanism 30.
  • the actuator 93 is, for example, an air cylinder.
  • the actuator 93 may be, for example, a hydraulic cylinder.
  • the first tie bar guide 94 is provided between the tie bar 18 and the support member 92b.
  • the first tie bar guide 94 has a function of lubricating the movement of the tie bar 18 with respect to the support member 92b in the mold opening / closing direction.
  • the second tie bar guide 95 is provided between the tie bar 18 and the link housing 16.
  • the second tie bar guide 95 has a function of lubricating the movement of the tie bar 18 with respect to the link housing 16 in the mold opening / closing direction.
  • FIG. 5 is an explanatory diagram of the operation of the adjustment mechanism of the embodiment.
  • the pinion 88 rotates due to the rotation of the motor 86.
  • the pinion 88 rotates around the output shaft 86a.
  • the rotation of the pinion 88 causes the ring gear 90 that meshes with the pinion 88 to rotate.
  • the ring gear 90 rotates around the tie bar 18 and the support member 92b.
  • the support member 92b moves in the mold opening / closing direction as the ring gear 90 rotates.
  • the rotational movement of the ring gear 90 is converted into a linear movement of the support member 92b.
  • the rotation direction of the ring gear 90 changes.
  • the support member 92b advances in the mold opening direction or the mold closing direction.
  • the split nut 92a supported by the support member 92b also moves in the mold opening / closing direction.
  • the split nut 92a moves in the mold opening / closing direction with respect to the engaged portion 18x of the tie bar 18.
  • the second uneven portion 92ax of the split nut 92a and the first uneven portion 18xx of the engaged portion 18x can be engaged with each other without any horizontal positional deviation. Will be.
  • the movable amount of the split nut device 92 in the mold opening / closing direction is, for example, 1 times or more and 2 times or less the pitch of the first uneven portion 18xx. That is, the movable amount of the split nut 92a in the mold opening / closing direction is, for example, 1 times or more and 2 times or less the pitch of the first uneven portion 18xx.
  • the control device 43 controls the molding operation of the die casting machine 100.
  • the control device 43 may include, for example, a toggle mechanism 24, a toggle moving mechanism 26, an extrusion mechanism 28, a tie bar fixing mechanism 29, a first adjustment mechanism 30a, a second adjustment mechanism 30b, a third adjustment mechanism 30c, and a fourth adjustment. It controls the operation of the mechanism 30d and the injection device 32.
  • the control device 43 independently controls the operations of the first adjusting mechanism 30a, the second adjusting mechanism 30b, the third adjusting mechanism 30c, and the fourth adjusting mechanism 30d.
  • the control device 34 is, for example, based on the measurement results of the first measuring instrument 36a, the second measuring instrument 36b, the third measuring instrument 36c, and the fourth measuring instrument 36d, and the first adjusting mechanism 30a, the second.
  • the operation of the adjusting mechanism 30b, the third adjusting mechanism 30c, and the fourth adjusting mechanism 30d is independently controlled.
  • the control device 34 is, for example, based on the measurement results of the first measuring instrument 36a, the second measuring instrument 36b, the third measuring instrument 36c, and the fourth measuring instrument 36d obtained in the first molding operation. Based on this, prior to the second molding operation, the stress applied to the first tie bar 18a, the second tie bar 18b, the third tie bar 18c, and the fourth tie bar 18d is set to the optimum value.
  • the operation of the adjusting mechanism 30a, the second adjusting mechanism 30b, the third adjusting mechanism 30c, and the fourth adjusting mechanism 30d is independently controlled.
  • the control device 34 is, for example, based on the measurement results of the first measuring instrument 36a, the second measuring instrument 36b, the third measuring instrument 36c, and the fourth measuring instrument 36d obtained in the first molding operation. Based on this, the difference in stress applied to the first tie bar 18a, the second tie bar 18b, the third tie bar 18c, and the fourth tie bar 18d before the second molding operation is smaller than that of the first molding operation. As such, the operations of the first adjusting mechanism 30a, the second adjusting mechanism 30b, the third adjusting mechanism 30c, and the fourth adjusting mechanism 30d are independently controlled.
  • the control device 34 is composed of, for example, a combination of hardware and software.
  • the control device 34 includes, for example, a CPU and a semiconductor memory.
  • the control device 34 includes, for example, a control program stored in a semiconductor memory.
  • the display device 35 is provided, for example, on the front surface of the control device 34.
  • the display device 35 accepts, for example, an operator's input operation.
  • the operator can set the molding conditions and the like of the die casting machine 100 by using the display device 35.
  • the display device 35 displays, for example, the molding conditions, the operating status, and the like of the die casting machine 100 on the screen.
  • the input display device 35 is, for example, a liquid crystal display or an organic EL display.
  • FIG. 6 is a flow chart of a molding operation of the molding machine of the embodiment.
  • 7 to 10 are explanatory views of a molding operation using the molding machine of the embodiment.
  • the molding operation of the die casting machine 100 of the embodiment includes a mold thickness information acquisition step (S01), a split nut closing position calculation step (S02), a split nut closing position adjustment step (S03), and a movable die plate.
  • the split nut closing position calculation step (S11), the split nut closing position individual adjustment step (S12), and the extrusion step (S13) are provided.
  • the die casting machine 100 is in a so-called mold opening state.
  • the die casting machine 100 acquires mold thickness information.
  • the mold thickness information is information on the thickness of the mold, which is the sum of the thickness of the fixed mold 20 and the thickness of the movable mold 22.
  • the mold thickness information is input from the display device 35 by the operator, for example.
  • the mold thickness information is stored in advance in the semiconductor memory in the control device 34, for example.
  • the control device 34 calculates and determines the split nut closing position in the mold opening / closing direction of the split nut device 92 based on the mold thickness information.
  • the split nut closing position is such that when the split nut 92a is closed, the second uneven portion 92ax of the split nut 92a and the first uneven portion 18xx of the engaged portion 18x mesh with each other without any horizontal positional deviation. Is a possible position.
  • the split nut closing position can be calculated from, for example, the position information of the first uneven portion 18xx of the engaged portion 18x stored in the control device 34 in advance and the mold thickness information.
  • the split nut 92a is moved to the split nut closing position determined in the split nut closing position calculation step (S02). Specifically, as shown in FIG. 7, according to a command from the control device 34, the motor 86 is rotated by a predetermined amount in a predetermined direction, and the split nut device 92 is moved by a predetermined amount in the mold opening / closing direction.
  • the link housing 16 and the movable die plate 14 are advanced in the mold closing direction.
  • the link housing 16 and the movable die plate 14 are moved by using the toggle moving mechanism 26.
  • the link housing 16 and the movable die plate 14 advance until the movable mold 22 comes into contact with the fixed mold 20.
  • the split nut closing step (S05) the split nut 92a is closed. Specifically, as shown in FIG. 8, the actuator 93 is driven by a command from the control device 34, and the second uneven portion 92ax of the split nut 92a and the first uneven portion 18xx of the engaged portion 18x are driven. Engage.
  • FIG. 9 shows a case where the mold is thinner than the case of FIG.
  • the second uneven portion 92ax and the second uneven portion 92ax mesh with each other at a position where the effective length of the tie bar 18 is shorter than that in the case of FIG.
  • the effective length of the tie bar 18 is the distance between the fixed die plate 12 and the link housing 16 after molding.
  • the mold is clamped using the toggle mechanism 24.
  • a mold clamping force is applied to the fixed mold 20 between the fixed mold 20 and the movable mold 22.
  • the tie bar 18 is stretched by the mold clamping force, and tensile stress is applied to the tie bar 18.
  • the magnitude of the tensile stress applied to each of the first tie bar 18a, the second tie bar 18b, the third tie bar 18c, and the fourth tie bar 18d is determined by the first measuring instrument 36a, the second measuring instrument 36b, and the second measuring instrument 36b. It is measured independently using the measuring instrument 36c of 3 and the measuring instrument 36d of the fourth. The measured result is transmitted to, for example, the control device 34 and stored in the control device 34.
  • the injection operation is performed using the injection device 32. Specifically, for example, a molten metal is supplied from the opening 82 into the sleeve 74 using a hopper or the like (not shown). Then, the plunger tip 76a is advanced in the sleeve 74 to fill the molten metal in the cavity Ca in the mold. A die-cast product is manufactured by molding the molten metal filled in the cavity Ca in the mold.
  • the mold is opened using the toggle mechanism 24.
  • the fixed mold 20 and the movable mold 22 are separated from each other.
  • the split nut opening step (S09) the split nut 92a is opened. Specifically, the actuator 93 is driven by a command from the control device 34 to release the engagement between the second uneven portion 92ax of the split nut 92a and the first uneven portion 18xx of the engaged portion 18x.
  • the link housing 16 and the movable die plate 14 are retracted in the mold opening direction.
  • the link housing 16 and the movable die plate 14 are moved by using the toggle moving mechanism 26.
  • the measurement results measured using the first measuring instrument 36a, the second measuring instrument 36b, the third measuring instrument 36c, and the fourth measuring instrument 36d are also included.
  • the first adjusting mechanism 30a and the second adjusting mechanism 30a so that the tensile stress applied to the first tie bar 18a, the second tie bar 18b, the third tie bar 18c, and the fourth tie bar 18d becomes an optimum value.
  • the control device 34 individually calculates and determines the split nut closing position in the mold opening / closing direction of each of the split nut devices 92 of the adjusting mechanism 30b, the third adjusting mechanism 30c, and the fourth adjusting mechanism 30d.
  • the split nut closing position where the difference in tensile stress applied to the first tie bar 18a, the second tie bar 18b, the third tie bar 18c, and the fourth tie bar 18d is smaller than that of the first molding operation is controlled.
  • the device 34 individually calculates and determines.
  • the second molding operation is performed.
  • the closing position of the split nut of the first adjusting mechanism 30a is determined so that the tensile stress applied to the tie bar 18a of 1 becomes small.
  • the split nut closing position of the first adjusting mechanism 30a is determined so that the effective length of the first tie bar 18a is longer than the effective length of the other tie bars 18.
  • the split nut 92a is moved to the split nut closing position determined in the split nut closing position individual calculation step (S11). Specifically, for example, as shown in FIG. 10, according to a command from the control device 34, only the motor 86 of the first adjusting mechanism 30a is rotated by a predetermined amount, and the split nut device of the first adjusting mechanism 30a is rotated. Only 92 is moved in the mold opening / closing direction by a predetermined amount.
  • the die-cast product is extruded using the extrusion mechanism 28. Specifically, by driving the extrusion motor 56, the extrusion pin 64 moves in the mold closing direction relative to the movable mold 22, and the die-cast product is extruded from the movable mold 22.
  • the die-cast product extruded from the movable mold 22 is picked up using, for example, a robot arm (not shown).
  • a die-cast product is manufactured by the above first molding operation.
  • the second molding operation is started from the movable die plate advancing step (S04).
  • the timing of executing the split nut closed position individual calculation step (S11) and the split nut closed position individual adjustment step (S12) does not necessarily have to be between the movable die plate retracting step (S10) and the extrusion step (S13). I do not care.
  • the split nut closing position individual calculation step (S11) may be executed after the injection step (S07) and before the movable die plate advancing step (S04) of the second molding operation.
  • the split nut closing position individual adjustment step (S12) may be executed after the movable die plate retracting step (S10) and before the movable die plate advancing step (S04) of the second molding operation.
  • the mold In the die casting machine, after molding the die casting product, the mold is replaced when molding a different type of die casting product. It becomes necessary to change the effective length of the tie bar 18 according to the mold thickness after replacement.
  • the split nut device 92 of the adjusting mechanism 30 can continuously move in the mold opening / closing direction. Therefore, the fixed position of the tie bar 18 can be arbitrarily changed. Therefore, it is possible to change the effective length of the tie bar 18 to any length. In other words, it is possible to fix the tie bar 18 at an optimum position for a mold having an arbitrary mold thickness.
  • the die casting machine there may be a difference in the tensile stress applied to the tie bar 18 among the plurality of tie bars 18 in the molded state. If there is a difference in the tensile stress applied to the tie bar 18, for example, the distribution of the stress applied to the mold becomes non-uniform, and the molded die-cast product may be defective. That is, the yield of die-cast products may decrease. In addition, the tie bar 18 to which excessive tensile stress is applied may be damaged.
  • the first tie bar 18a and the second tie bar are used by using the first adjustment mechanism 30a, the second adjustment mechanism 30b, the third adjustment mechanism 30c, and the fourth adjustment mechanism 30d.
  • the tensile stress applied to the 18b, the third tie bar 18c, and the fourth tie bar 18d can be adjusted independently. Therefore, for example, it is possible to equalize the tensile stress applied to the tie bar 18. Therefore, for example, it is possible to suppress damage to the tie bar 18.
  • the pitch of the second uneven portion 92ax is larger than the pitch of the female threaded portion 90y, and the length of the second uneven portion 92ax in the mold opening / closing direction is long. It is preferable that the length (L2 in FIG. 4) is smaller than the length of the female threaded portion 90y (L1 in FIG. 4). Further, from the viewpoint that the second uneven portion 92ax and the female screw portion 90y support the same degree of force, it is preferable that the height of the second uneven portion 92ax is larger than the height of the female screw portion 90y.
  • first uneven portion 18xx and the second uneven portion 92ax have a tapered shape. Since the first uneven portion 18xx and the second uneven portion 92ax have a tapered shape, the engagement between the first uneven portion 18xx and the second uneven portion 92ax becomes easy.
  • the thickness of the ring gear 90 in the direction perpendicular to the mold opening / closing direction becomes continuously thinner toward the link housing 16 in the mold opening / closing direction, for example.
  • the control device 43 includes a first measuring instrument 36a, a second measuring instrument 36b, a third measuring instrument 36c, and a fourth measuring instrument 36a obtained during the first molding operation. Based on the measurement result of the measuring instrument 36d, the first tie bar 18a, the second tie bar 18b, the third tie bar 18c, and the fourth tie bar 18d are performed before the second molding operation following the first molding operation.
  • the first adjusting mechanism 30a, the second adjusting mechanism 30b, the third adjusting mechanism 30c, and the fourth adjusting mechanism 30d are controlled so that the difference in the stress applied to is smaller than that of the first forming operation. Is preferable.
  • the die casting machine has been described as an example of a molding machine, but the present invention can also be applied to an injection molding machine or the like.
  • the drive device for driving the toggle mechanism is a motor
  • the drive device may be a hydraulic device.
  • Base 12 Fixed die plate 14 Movable die plate 16 Link housing 18a First tie bar 18b Second tie bar 18c Third tie bar 18d Fourth tie bar 18x Engagement part 18xx First uneven part 19 Tie bar nut 20 Fixing metal Mold 22 Movable mold 24 Toggle mechanism 26 Toggle movement mechanism 28 Extrusion mechanism 30 Tie bar fixing mechanism 30a First adjustment mechanism 30b Second adjustment mechanism 30c Third adjustment mechanism 30d Fourth adjustment mechanism 32 Injection device 34 Control device 36a 1st measuring instrument 36b 2nd measuring instrument 36c 3rd measuring instrument 36d 4th measuring instrument 40 type clamping motor (drive device) 86 motor (motor) 86a Output shaft 88 Pinion 90 Ring gear 90 x Gear part 90y Female thread part 92 Split nut device 92a Split nut 92a x Second uneven part 92b Support member 92b x Male thread part 100 Die casting machine (molding machine) Ca cavity

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  • 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

A molding machine according to one embodiment of the present invention comprises: a fixed die plate which holds a fixed mold; a movable die plate which holds a movable mold in such a manner as to face the fixed mold; a toggle mechanism which is capable of performing mold close on the fixed mold and the movable mold; a link housing; first to fourth tiebars each having one end fixable to the fixed mold, extending in a mold opening/closing direction, and having, at the the other end, a to-be-engaged part; first to fourth adjustment mechanisms for adjusting fixing positions of the respective other ends of the first to fourth tiebars; and an ejection device. Each of the first to fourth adjustment mechanisms comprises: an electric motor that is fixed to the link housing; a link gear that is driven by the electric motor, is formed in an annular shape surrounding the tiebar, and is capable of rotating about the tiebar; and a split nut device that is capable of moving in the mold opening/closing direction as a result of the rotation of the link gear and also capable of fixing the to-be-engaged part.

Description

成形機Molding machine
　本発明は、タイバーの固定位置を調整する調整機構を備えた成形機に関する。 The present invention relates to a molding machine provided with an adjusting mechanism for adjusting the fixed position of the tie bar.
　成形機の一例であるダイカストマシンでは、例えば、トグル機構を用いて型締めされた金型内の空洞に、射出装置を用いて溶湯を充填することで、成形品（ダイカスト品）を製造する。型締力が適正に制御されないと、成形品の歩留まりが低下するおそれがある。例えば、型締力が不足すると、バリが発生し歩留まりが低下するおそれがある。また、型締力が過剰になると、成形機や金型が破損するおそれがある。 In a die casting machine, which is an example of a molding machine, for example, a molded product (die casting product) is manufactured by filling a cavity in a mold that has been molded using a toggle mechanism with molten metal using an injection device. If the mold clamping force is not properly controlled, the yield of the molded product may decrease. For example, if the mold clamping force is insufficient, burrs may occur and the yield may decrease. Further, if the mold clamping force is excessive, the molding machine and the mold may be damaged.
　特許文献１には、複数のタイバーに螺合された複数のタイバーナットを、同時に回転させることにより、型締力を調整する型締装置が記載されている。 Patent Document 1 describes a mold clamping device that adjusts a mold clamping force by simultaneously rotating a plurality of tie bar nuts screwed into a plurality of tie bars.
特開２００７－１１２００３号公報Japanese Unexamined Patent Publication No. 2007-112003
　本発明が解決しようとする課題は、複数のタイバーに加わる応力を独立して調整可能な成形機を提供することである。 The problem to be solved by the present invention is to provide a molding machine capable of independently adjusting the stress applied to a plurality of tie bars.
　本発明の一態様の成形機は、ベースと、前記ベースの上に固定され、固定金型を保持する固定ダイプレートと、前記ベースの上に型開閉方向に移動可能に設けられ、可動金型を前記固定金型に対向して保持する可動ダイプレートと、前記固定金型と前記可動金型の型締めが可能なトグル機構と、前記ベースの上に前記型開閉方向に移動可能に設けられ、前記トグル機構のリンクの一端が固定されるリンクハウジングと、前記トグル機構を駆動する駆動装置と、一端を前記固定ダイプレートに固定可能で、前記型開閉方向に延び、他端に被係合部を有する第１のタイバーと、一端を前記固定ダイプレートに固定可能で、前記型開閉方向に延び、他端に被係合部を有する第２のタイバーと、一端を前記固定ダイプレートに固定可能で、前記型開閉方向に延び、他端に被係合部を有する第３のタイバーと、一端を前記固定ダイプレートに固定可能で、前記型開閉方向に延び、他端に被係合部を有する第４のタイバーと、前記第１のタイバーの前記他端の固定位置を調整する第１の調整機構と、前記第２のタイバーの前記他端の固定位置を調整する第２の調整機構と、前記第３のタイバーの前記他端の固定位置を調整する第３の調整機構と、前記第４のタイバーの前記他端の固定位置を調整する第４の調整機構と、溶湯を前記固定金型と前記可動金型とで形成される空洞内に充填する射出装置と、を備え、前記第１の調整機構、前記第２の調整機構、前記第３の調整機構、及び前記第４の調整機構のそれぞれは、前記リンクハウジングに固定される電動機と、前記電動機を用いて駆動され、タイバーを囲む環状で、前記タイバーの回りを回転可能なリングギアと、前記リングギアの回転により前記型開閉方向に移動可能で、前記被係合部を固定可能な分割ナット装置と、を含む。 The molding machine according to one aspect of the present invention is provided on the base, a fixed die plate fixed on the base and holding a fixed mold, and a movable mold provided on the base so as to be movable in the mold opening / closing direction. A movable die plate that holds the fixed mold facing the fixed mold, a toggle mechanism that can fasten the fixed mold and the movable mold, and a toggle mechanism that can move the fixed mold and the movable mold in the opening / closing direction of the mold are provided on the base. A link housing to which one end of the link of the toggle mechanism is fixed, a drive device for driving the toggle mechanism, and one end that can be fixed to the fixed die plate, extend in the opening / closing direction of the mold, and are engaged with the other end. A first tie bar having a portion and a second tie bar whose one end can be fixed to the fixed die plate and which extends in the mold opening / closing direction and has an engaged portion at the other end, and one end fixed to the fixed die plate. A third tie bar that extends in the mold opening / closing direction and has an engaged portion at the other end, and one end can be fixed to the fixed die plate, extends in the mold opening / closing direction, and has an engaged portion at the other end. A fourth adjusting mechanism for adjusting the fixing position of the other end of the first tie bar, and a second adjusting mechanism for adjusting the fixing position of the other end of the second tie bar. A third adjusting mechanism for adjusting the fixing position of the other end of the third tie bar, a fourth adjusting mechanism for adjusting the fixing position of the other end of the fourth tie bar, and fixing the molten metal. An injection device for filling the cavity formed by the mold and the movable mold is provided, and the first adjusting mechanism, the second adjusting mechanism, the third adjusting mechanism, and the fourth adjusting mechanism are provided. Each of the adjusting mechanisms is an electric motor fixed to the link housing, a ring gear driven by the electric motor and capable of rotating around the tie bar in an annular shape, and the mold by the rotation of the ring gear. It includes a split nut device that can move in the opening / closing direction and can fix the engaged portion.
　上記態様の成形機において、前記第１の調整機構、前記第２の調整機構、前記第３の調整機構、及び前記第４の調整機構のそれぞれは、前記電動機の出力軸に同心状に固定されたピニオンを、更に含み、前記被係合部は、第１の凹凸部を有し、前記分割ナット装置は、前記第１の凹凸部に係合可能な第２の凹凸部を有する分割ナットと、前記分割ナットを支持し、前記タイバーを囲む環状で、一部が前記リングギアに囲まれ、前記一部に雄ねじ部を有する支持部材と、を有し、前記リングギアは、外周側に前記ピニオンに噛み合うギア部と、内周側に前記雄ねじ部に噛み合う雌ねじ部と、を有することが好ましい。 In the molding machine of the above aspect, each of the first adjusting mechanism, the second adjusting mechanism, the third adjusting mechanism, and the fourth adjusting mechanism is concentrically fixed to the output shaft of the electric motor. The engaged portion further comprises a pinion, the engaged portion has a first concavo-convex portion, and the split nut device has a split nut having a second concavo-convex portion that can be engaged with the first concavo-convex portion. A support member that supports the split nut and surrounds the tie bar, is partially surrounded by the ring gear, and has a male screw portion in the part, and the ring gear is on the outer peripheral side. It is preferable to have a gear portion that meshes with the pinion and a female screw portion that meshes with the male screw portion on the inner peripheral side.
　上記態様の成形機において、前記第２の凹凸部のピッチは前記雌ねじ部のピッチよりも大きく、前記第２の凹凸部の前記型開閉方向の長さは前記雌ねじ部の前記型開閉方向の長さよりも小さいことが好ましい。 In the molding machine of the above aspect, the pitch of the second uneven portion is larger than the pitch of the female screw portion, and the length of the second uneven portion in the mold opening / closing direction is the length of the female screw portion in the mold opening / closing direction. It is preferably smaller than the halfbeak.
　上記態様の成形機において、前記第２の凹凸部の高さは前記雌ねじ部の高さよりも大きいことが好ましい。 In the molding machine of the above aspect, it is preferable that the height of the second uneven portion is larger than the height of the female screw portion.
　上記態様の成形機において、前記リングギアの前記型開閉方向に垂直な方向の厚さは、前記型開閉方向に前記リンクハウジングに向かって連続的に薄くなることが好ましい。 In the molding machine of the above aspect, it is preferable that the thickness of the ring gear in the direction perpendicular to the mold opening / closing direction is continuously thinned toward the link housing in the mold opening / closing direction.
　上記態様の成形機において、前記第１の調整機構、前記第２の調整機構、前記第３の調整機構、及び前記第４の調整機構を独立に制御する制御装置を、更に備えることが好ましい。 It is preferable that the molding machine of the above aspect further includes a control device that independently controls the first adjusting mechanism, the second adjusting mechanism, the third adjusting mechanism, and the fourth adjusting mechanism.
　上記態様の成形機において、前記第１のタイバーに加わる応力を測定する第１の測定器と、前記第２のタイバーに加わる応力を測定する第２の測定器と、前記第３のタイバーに加わる応力を測定する第３の測定器と、前記第４のタイバーに加わる応力を測定する第４の測定器と、を更に備え、前記制御装置は、第１の成形動作の際に得られた前記第１の測定器、前記第２の測定器、前記第３の測定器、及び前記第４の測定器の測定結果に基づき、前記第１の成形動作に続く第２の成形動作の前に、前記第１の調整機構、前記第２の調整機構、前記第３の調整機構、及び前記第４の調整機構を制御することが好ましい。 In the molding machine of the above aspect, the first measuring instrument for measuring the stress applied to the first tie bar, the second measuring instrument for measuring the stress applied to the second tie bar, and the third tie bar are applied. A third measuring instrument for measuring stress and a fourth measuring instrument for measuring the stress applied to the fourth tie bar are further provided, and the control device is the same as obtained during the first molding operation. Based on the measurement results of the first measuring instrument, the second measuring instrument, the third measuring instrument, and the fourth measuring instrument, before the second molding operation following the first molding operation, It is preferable to control the first adjusting mechanism, the second adjusting mechanism, the third adjusting mechanism, and the fourth adjusting mechanism.
　上記態様の成形機において、前記制御装置は、前記第１の成形動作の際に得られた前記第１の測定器、前記第２の測定器、前記第３の測定器、及び前記第４の測定器の前記測定結果に基づき、前記第１の成形動作に続く前記第２の成形動作の前に、前記第１のタイバー、前記第２のタイバー、前記第３のタイバー、及び前記第４のタイバーに加わる応力の差分が、前記第１の成形動作の際の応力の差分よりも小さくなるように、前記第１の調整機構、前記第２の調整機構、前記第３の調整機構、及び前記第４の調整機構を制御することが好ましい。 In the molding machine of the above aspect, the control device is the first measuring instrument, the second measuring instrument, the third measuring instrument, and the fourth measuring instrument obtained in the first molding operation. Based on the measurement result of the measuring instrument, the first tie bar, the second tie bar, the third tie bar, and the fourth tie bar are performed before the second molding operation following the first molding operation. The first adjusting mechanism, the second adjusting mechanism, the third adjusting mechanism, and the above, so that the difference in stress applied to the tie bar is smaller than the difference in stress during the first molding operation. It is preferable to control the fourth adjustment mechanism.
　本発明によれば、複数のタイバーに加わる応力を独立して調整可能な成形機を提供することができる。 According to the present invention, it is possible to provide a molding machine that can independently adjust the stress applied to a plurality of tie bars.
実施形態の成形機の全体構成を示す模式図。The schematic diagram which shows the whole structure of the molding machine of an embodiment. 実施形態の成形機の模式図。The schematic diagram of the molding machine of an embodiment. 実施形態の成形機の模式図。The schematic diagram of the molding machine of an embodiment. 実施形態の調整機構の模式断面図。Schematic cross-sectional view of the adjustment mechanism of the embodiment. 実施形態の調整機構の動作の説明図。An explanatory diagram of the operation of the adjustment mechanism of the embodiment. 実施形態の成形機の成形動作のフロー図。The flow chart of the molding operation of the molding machine of an embodiment. 実施形態の成形機を用いた成形動作の説明図。The explanatory view of the molding operation using the molding machine of an embodiment. 実施形態の成形機を用いた成形動作の説明図。The explanatory view of the molding operation using the molding machine of an embodiment. 実施形態の成形機を用いた成形動作の説明図。The explanatory view of the molding operation using the molding machine of an embodiment. 実施形態の成形機を用いた成形動作の説明図。The explanatory view of the molding operation using the molding machine of an embodiment.
　以下、本発明の実施形態について図面を参照して説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
　実施形態の成形機は、ベースと、ベースの上に固定され、固定金型を保持する固定ダイプレートと、ベースの上に型開閉方向に移動可能に設けられ、可動金型を固定金型に対向して保持する可動ダイプレートと、固定金型と可動金型の型締めが可能なトグル機構と、ベースの上に型開閉方向に移動可能に設けられ、トグル機構のリンクの一端が固定されるリンクハウジングと、トグル機構を駆動する駆動装置と、一端を固定ダイプレートに固定可能で、型開閉方向に延び、他端に被係合部を有する第１のタイバーと、一端を固定ダイプレートに固定可能で、型開閉方向に延び、他端に被係合部を有する第２のタイバーと、一端を固定ダイプレートに固定可能で、型開閉方向に延び、他端に被係合部を有する第３のタイバーと、一端を固定ダイプレートに固定可能で、型開閉方向に延び、他端に被係合部を有する第４のタイバーと、第１のタイバーの他端の固定位置を調整する第１の調整機構と、第２のタイバーの他端の固定位置を調整する第２の調整機構と、第３のタイバーの他端の固定位置を調整する第３の調整機構と、第４のタイバーの他端の固定位置を調整する第４の調整機構と、溶湯を固定金型と可動金型とで形成される空洞内に充填する射出装置と、を備え、第１の調整機構、第２の調整機構、第３の調整機構、及び第４の調整機構のそれぞれは、リンクハウジングに固定される電動機と、電動機を用いて駆動され、タイバーを囲む環状で、タイバーの回りを回転可能なリングギアと、リングギアの回転により型開閉方向に移動可能で、被係合部を固定可能な分割ナット装置と、を含む。 The molding machine of the embodiment has a base, a fixed die plate fixed on the base and holding a fixed mold, and a movable mold provided on the base so as to be movable in the mold opening / closing direction. A movable die plate that holds them facing each other, a toggle mechanism that can fasten the fixed mold and the movable mold, and a toggle mechanism that can be moved in the mold opening / closing direction on the base, and one end of the link of the toggle mechanism is fixed. A link housing, a drive device that drives the toggle mechanism, a first tie bar that can be fixed to a fixed die plate at one end, extends in the mold opening / closing direction, and has an engaged portion at the other end, and one end is a fixed die plate. A second tie bar that can be fixed to the mold and extends in the mold opening / closing direction and has an engaged portion at the other end, and one end can be fixed to the fixed die plate and extends in the mold opening / closing direction and has an engaged portion at the other end. Adjust the fixing position of the third tie bar to be held, the fourth tie bar that can be fixed to the fixed die plate at one end, extends in the mold opening / closing direction, and has an engaged portion at the other end, and the other end of the first tie bar. A first adjusting mechanism for adjusting the fixing position of the other end of the second tie bar, a third adjusting mechanism for adjusting the fixing position of the other end of the third tie bar, and a fourth adjustment mechanism. The first adjusting mechanism is provided with a fourth adjusting mechanism for adjusting the fixing position of the other end of the tie bar, and an injection device for filling the molten metal into the cavity formed by the fixed mold and the movable mold. Each of the second adjusting mechanism, the third adjusting mechanism, and the fourth adjusting mechanism is driven by an electric motor fixed to the link housing and an electric motor, and can rotate around the tie bar in an annular shape surrounding the tie bar. Includes a ring gear and a split nut device that can be moved in the mold opening / closing direction by rotating the ring gear and can fix the engaged portion.
　図１は、実施形態の成形機の全体構成を示す模式図である。図１は、一部に断面図を含む側面図である。図２は、実施形態の成形機の模式図である。図２は、成形機をリンクハウジング側から見た側面図である。図３は、実施形態の成形機の模式図である。図３は、図１のＡＡ’断面である。図３は、トグル機構の図示を省略している。 FIG. 1 is a schematic diagram showing the overall configuration of the molding machine of the embodiment. FIG. 1 is a side view including a cross-sectional view in part. FIG. 2 is a schematic view of the molding machine of the embodiment. FIG. 2 is a side view of the molding machine as viewed from the link housing side. FIG. 3 is a schematic view of the molding machine of the embodiment. FIG. 3 is a cross section of AA'in FIG. FIG. 3 omits the illustration of the toggle mechanism.
　実施形態の成形機はダイカストマシンである。実施形態のダイカストマシン１００は、コールドチャンバ式のダイカストマシンである。 The molding machine of the embodiment is a die casting machine. The die casting machine 100 of the embodiment is a cold chamber type die casting machine.
　図１ないし図３は、ダイカストマシン１００の動作開始前の初期状態を示す。この場合の初期状態とは、金型が開ききった状態、いわゆる型開限の状態である。 FIGS. 1 to 3 show an initial state before the start of operation of the die casting machine 100. The initial state in this case is a state in which the mold is fully opened, that is, a so-called mold opening state.
　ダイカストマシン１００は、金型の内部（図１中の空洞Ｃａ）に液状金属（溶湯）を射出し、その液状金属を金型内で凝固させることにより、ダイカスト品を製造する。金属は、例えば、アルミニウム、アルミニウム合金、亜鉛合金、又は、マグネシウム合金である。 The die casting machine 100 manufactures a die casting product by injecting a liquid metal (molten metal) into the inside of the mold (hollow Ca in FIG. 1) and solidifying the liquid metal in the mold. The metal is, for example, aluminum, an aluminum alloy, a zinc alloy, or a magnesium alloy.
　ダイカストマシン１００は、ベース１０、固定ダイプレート１２、可動ダイプレート１４、リンクハウジング１６、第１のタイバー１８ａ、第２のタイバー１８ｂ、第３のタイバー１８ｃ、第４のタイバー１８ｄ、固定金型２０、可動金型２２、トグル機構２４、トグル移動機構２６、押出機構２８、タイバー固定機構２９、第１の調整機構３０ａ、第２の調整機構３０ｂ、第３の調整機構３０ｃ、第４の調整機構３０ｄ、射出装置３２、制御装置３４、表示装置３５、第１の測定器３６ａ、第２の測定器３６ｂ、第３の測定器３６ｃ、第４の測定器３６ｄ、を備える。 The die casting machine 100 includes a base 10, a fixed die plate 12, a movable die plate 14, a link housing 16, a first tie bar 18a, a second tie bar 18b, a third tie bar 18c, a fourth tie bar 18d, and a fixed mold 20. , Movable mold 22, toggle mechanism 24, toggle moving mechanism 26, extrusion mechanism 28, tie bar fixing mechanism 29, first adjustment mechanism 30a, second adjustment mechanism 30b, third adjustment mechanism 30c, fourth adjustment mechanism. 30d, an injection device 32, a control device 34, a display device 35, a first measuring device 36a, a second measuring device 36b, a third measuring device 36c, and a fourth measuring device 36d.
　以下、第１のタイバー１８ａ、第２のタイバー１８ｂ、第３のタイバー１８ｃ、及び第４のタイバー１８ｄを総称して、単にタイバー１８と記載する場合がある。また、第１の調整機構３０ａ、第２の調整機構３０ｂ、第３の調整機構３０ｃ、及び第４の調整機構３０ｄを総称して、単に調整機構３０と記載する場合がある。また、第１の測定器３６ａ、第２の測定器３６ｂ、第３の測定器３６ｃ、及び第４の測定器３６ｄを総称して、単に測定器３６と記載する場合がある。 Hereinafter, the first tie bar 18a, the second tie bar 18b, the third tie bar 18c, and the fourth tie bar 18d may be collectively referred to as the tie bar 18. Further, the first adjusting mechanism 30a, the second adjusting mechanism 30b, the third adjusting mechanism 30c, and the fourth adjusting mechanism 30d may be collectively referred to as the adjusting mechanism 30. Further, the first measuring instrument 36a, the second measuring instrument 36b, the third measuring instrument 36c, and the fourth measuring instrument 36d may be collectively referred to as the measuring instrument 36.
　トグル機構２４は、型締モータ４０（駆動装置）、第１のねじ軸４２、クロスヘッド４４、複数のリンク４６を備える。型締モータ４０は駆動装置の一例である。型締モータ４０は、例えば、電動モータである。 The toggle mechanism 24 includes a mold clamping motor 40 (driving device), a first screw shaft 42, a crosshead 44, and a plurality of links 46. The mold clamping motor 40 is an example of a drive device. The mold clamping motor 40 is, for example, an electric motor.
　トグル移動機構２６は、トグル移動モータ５０、第２のねじ軸５２、ナット部５４、ガイドレール５５を含む。トグル移動モータ５０は、例えば、電動モータである。 The toggle moving mechanism 26 includes a toggle moving motor 50, a second screw shaft 52, a nut portion 54, and a guide rail 55. The toggle moving motor 50 is, for example, an electric motor.
　押出機構２８は、押出モータ５６、押出板５８、押出軸６０、ピン支持板６２、押出ピン６４を含む。 The extrusion mechanism 28 includes an extrusion motor 56, an extrusion plate 58, an extrusion shaft 60, a pin support plate 62, and an extrusion pin 64.
　タイバー固定機構２９は、例えば、ハーフナットを含む。 The tie bar fixing mechanism 29 includes, for example, a half nut.
　射出装置３２は、スリーブ７４、プランジャ７６、射出駆動部７８、位置センサ８０を有する。プランジャ７６は、プランジャチップ７６ａとプランジャロッド７６ｂを含む。スリーブ７４には、開口部８２が設けられる。 The injection device 32 has a sleeve 74, a plunger 76, an injection drive unit 78, and a position sensor 80. The plunger 76 includes a plunger tip 76a and a plunger rod 76b. The sleeve 74 is provided with an opening 82.
　固定ダイプレート１２はベース１０の上に固定される。固定ダイプレート１２には固定金型２０を取り付けることが可能である。 The fixed die plate 12 is fixed on the base 10. A fixed mold 20 can be attached to the fixed die plate 12.
　可動ダイプレート１４は、ベース１０の上に型開閉方向に移動可能に設けられる。型開閉方向とは、図１等に示す型開方向及び型閉方向の両方向を意味する。可動ダイプレート１４は、ベース１０の上に設けられたガイドレール５５の上を型開閉方向に移動する。可動ダイプレート１４には、可動金型２２を取り付けることが可能である。 The movable die plate 14 is provided on the base 10 so as to be movable in the mold opening / closing direction. The mold opening / closing direction means both the mold opening direction and the mold closing direction shown in FIG. 1 and the like. The movable die plate 14 moves on the guide rail 55 provided on the base 10 in the mold opening / closing direction. A movable mold 22 can be attached to the movable die plate 14.
　リンクハウジング１６は、ベース１０の上に型開閉方向に移動可能に設けられる。リンクハウジング１６は、ベース１０の上に設けられたガイドレール５５の上を型開閉方向に移動する。リンクハウジング１６には、複数のリンク４６の一部の一端が固定される。 The link housing 16 is provided on the base 10 so as to be movable in the mold opening / closing direction. The link housing 16 moves on the guide rail 55 provided on the base 10 in the mold opening / closing direction. One end of a part of the plurality of links 46 is fixed to the link housing 16.
　トグル機構２４は、リンクハウジング１６と可動ダイプレート１４との間に設けられる。複数のリンク４６の一部の一端がリンクハウジング１６に固定される。また、複数のリンク４６の別の一部の一端が可動ダイプレート１４に固定される。 The toggle mechanism 24 is provided between the link housing 16 and the movable die plate 14. One end of a part of the plurality of links 46 is fixed to the link housing 16. Further, one end of another part of the plurality of links 46 is fixed to the movable die plate 14.
　トグル機構２４により、リンクハウジング１６と可動ダイプレート１４との間の距離が変化する。トグル機構２４により、固定金型２０と可動金型２２の型締めが可能となる。 The toggle mechanism 24 changes the distance between the link housing 16 and the movable die plate 14. The toggle mechanism 24 makes it possible to fasten the fixed mold 20 and the movable mold 22.
　トグル機構２４は、例えば、型締モータ４０を用いて駆動される。型締モータ４０により、第１のねじ軸４２が回転することにより、クロスヘッド４４が型開閉方向に移動する。クロスヘッド４４の型開閉方向の移動に伴い、複数のリンク４６が動作し、可動ダイプレート１４がリンクハウジング１６に対して相対的に型開閉方向に移動する。 The toggle mechanism 24 is driven by, for example, a mold clamping motor 40. The mold clamping motor 40 rotates the first screw shaft 42, so that the crosshead 44 moves in the mold opening / closing direction. As the crosshead 44 moves in the mold opening / closing direction, the plurality of links 46 operate, and the movable die plate 14 moves in the mold opening / closing direction relative to the link housing 16.
　トグル機構２４は、例えば、油圧シリンダを用いて駆動されても構わない。 The toggle mechanism 24 may be driven by using, for example, a hydraulic cylinder.
　第１のタイバー１８ａ、第２のタイバー１８ｂ、第３のタイバー１８ｃ、及び第４のタイバー１８ｄは、型開閉方向に延びる。タイバー１８の一端は、固定ダイプレート１２に固定可能である。 The first tie bar 18a, the second tie bar 18b, the third tie bar 18c, and the fourth tie bar 18d extend in the mold opening / closing direction. One end of the tie bar 18 can be fixed to the fixed die plate 12.
　タイバー１８は、固定ダイプレート１２、可動ダイプレート１４、及びリンクハウジング１６を貫通する。タイバー１８は、可動ダイプレート１４に対して摺動可能である。タイバー１８は、固定されていない状態では、固定ダイプレート１２及びリンクハウジング１６に対して摺動可能である。 The tie bar 18 penetrates the fixed die plate 12, the movable die plate 14, and the link housing 16. The tie bar 18 is slidable with respect to the movable die plate 14. The tie bar 18 is slidable with respect to the fixed die plate 12 and the link housing 16 in the unfixed state.
　タイバー１８は、固定金型２０と可動金型２２に型締力が加えられている間は、型締力を支える。 The tie bar 18 supports the mold clamping force while the mold clamping force is applied to the fixed mold 20 and the movable mold 22.
　タイバー固定機構２９は固定ダイプレート１２に固定される。タイバー１８は固定ダイプレート１２に対し、タイバー固定機構２９を用いて固定又は非固定（解放）の状態にすることが可能である。 The tie bar fixing mechanism 29 is fixed to the fixed die plate 12. The tie bar 18 can be fixed or non-fixed (released) to the fixed die plate 12 by using the tie bar fixing mechanism 29.
　タイバー固定機構２９は、タイバー１８を所望の位置で固定する。タイバー固定機構２９は、例えば、ハーフナットを用いて、タイバー１８を固定ダイプレート１２に対して固定する。タイバー固定機構２９は、例えば、ねじであっても構わない。 The tie bar fixing mechanism 29 fixes the tie bar 18 at a desired position. The tie bar fixing mechanism 29 fixes the tie bar 18 to the fixing die plate 12 by using, for example, a half nut. The tie bar fixing mechanism 29 may be, for example, a screw.
　タイバー１８の他端には、被係合部１８ｘが設けられる。タイバー１８の他端は、分割ナット装置９２に固定可能である。 An engaged portion 18x is provided at the other end of the tie bar 18. The other end of the tie bar 18 can be fixed to the split nut device 92.
　タイバー１８の被係合部１８ｘは、第１の凹凸部１８ｘｘを有する。第１の凹凸部１８ｘｘは、例えば、テーパ形状を有する。 The engaged portion 18x of the tie bar 18 has a first uneven portion 18xx. The first uneven portion 18xx has, for example, a tapered shape.
　押出機構２８は、製造されたダイカスト品を金型から押し出して分離する機能を有する。押出板５８には、型閉方向に延びる押出軸６０の一端が固定される。押出軸６０は、可動ダイプレート１４を貫通する。押出軸６０は、可動ダイプレート１４に対して摺動可能である。 The extrusion mechanism 28 has a function of extruding the manufactured die-cast product from the mold and separating it. One end of the extrusion shaft 60 extending in the mold closing direction is fixed to the extrusion plate 58. The extrusion shaft 60 penetrates the movable die plate 14. The extrusion shaft 60 is slidable with respect to the movable die plate 14.
　押出軸６０の他端は、ピン支持板６２に固定される。ピン支持板６２には、押出ピン６４が固定される。押出ピン６４は、可動金型２２に出没可能に設けられる。押出ピン６４は、型閉方向に延びる。押出ピン６４は、例えば、複数本設けられる。 The other end of the extrusion shaft 60 is fixed to the pin support plate 62. The extrusion pin 64 is fixed to the pin support plate 62. The extrusion pin 64 is provided on the movable mold 22 so as to be able to appear and disappear. The extrusion pin 64 extends in the mold closing direction. For example, a plurality of extrusion pins 64 are provided.
　押出モータ５６を駆動することにより、押出ピン６４が型開閉方向に移動する。 By driving the extrusion motor 56, the extrusion pin 64 moves in the mold opening / closing direction.
　第１の測定器３６ａは、型締時に第１のタイバー１８ａに加わる応力を測定する。第２の測定器３６ｂは、型締時に第２のタイバー１８ｂに加わる応力を測定する。第３の測定器３６ｃは、型締時に第３のタイバー１８ｃに加わる応力を測定する。第４の測定器３６ｄは、型締時に第４のタイバー１８ｄに加わる応力を測定する。 The first measuring instrument 36a measures the stress applied to the first tie bar 18a during mold clamping. The second measuring instrument 36b measures the stress applied to the second tie bar 18b during mold clamping. The third measuring instrument 36c measures the stress applied to the third tie bar 18c during mold clamping. The fourth measuring instrument 36d measures the stress applied to the fourth tie bar 18d during mold clamping.
　測定器３６は、例えば、タイバー１８の伸びを測定し、測定された伸びを引っ張り応力に換算する。第１の測定器３６ａ、第２の測定器３６ｂ、第３の測定器３６ｃ、及び第４の測定器３６ｄを用いて、第１のタイバー１８ａ、第２のタイバー１８ｂ、第３のタイバー１８ｃ、及び第４のタイバー１８ｄに型締時に加わる応力を独立に測定することが可能である。 The measuring instrument 36 measures, for example, the elongation of the tie bar 18, and converts the measured elongation into tensile stress. Using the first measuring instrument 36a, the second measuring instrument 36b, the third measuring instrument 36c, and the fourth measuring instrument 36d, the first tie bar 18a, the second tie bar 18b, and the third tie bar 18c, And it is possible to independently measure the stress applied to the fourth tie bar 18d during mold clamping.
　第１の調整機構３０ａ、第２の調整機構３０ｂ、第３の調整機構３０ｃ、及び第４の調整機構３０ｄは、リンクハウジング１６に固定される。第１の調整機構３０ａは第１のタイバー１８ａの固定位置を調整する。第２の調整機構３０ｂは第２のタイバー１８ｂの固定位置を調整する。第３の調整機構３０ｃは第３のタイバー１８ｃの固定位置を調整する。第４の調整機構３０ｄは第４のタイバー１８ｄの固定位置を調整する。 The first adjusting mechanism 30a, the second adjusting mechanism 30b, the third adjusting mechanism 30c, and the fourth adjusting mechanism 30d are fixed to the link housing 16. The first adjusting mechanism 30a adjusts the fixed position of the first tie bar 18a. The second adjusting mechanism 30b adjusts the fixed position of the second tie bar 18b. The third adjusting mechanism 30c adjusts the fixed position of the third tie bar 18c. The fourth adjusting mechanism 30d adjusts the fixed position of the fourth tie bar 18d.
　図４は、実施形態の調整機構の模式断面図である。第１の調整機構３０ａ、第２の調整機構３０ｂ、第３の調整機構３０ｃ、及び第４の調整機構３０ｄのそれぞれが図４に示す構造と同様の構造を有する。 FIG. 4 is a schematic cross-sectional view of the adjustment mechanism of the embodiment. Each of the first adjusting mechanism 30a, the second adjusting mechanism 30b, the third adjusting mechanism 30c, and the fourth adjusting mechanism 30d has a structure similar to the structure shown in FIG.
　調整機構３０は、モータ８６（電動機）、ピニオン８８、リングギア９０、分割ナット装置９２、アクチュエータ９３、第１のタイバーガイド９４、及び第２のタイバーガイド９５を備える。モータ８６は、電動機の一例である。モータ８６は、出力軸８６ａを有する。分割ナット装置９２は、分割ナット９２ａ、支持部材９２ｂを有する。 The adjusting mechanism 30 includes a motor 86 (motor), a pinion 88, a ring gear 90, a split nut device 92, an actuator 93, a first tie bar guide 94, and a second tie bar guide 95. The motor 86 is an example of an electric motor. The motor 86 has an output shaft 86a. The split nut device 92 has a split nut 92a and a support member 92b.
　タイバー１８の被係合部１８ｘは、第１の凹凸部１８ｘｘを有する。分割ナット９２ａは第２の凹凸部９２aｘを有する。支持部材９２ｂは雄ねじ部９２ｂｘを有する。リングギア９０は、ギア部９０ｘと雌ねじ部９０ｙを有する。 The engaged portion 18x of the tie bar 18 has a first uneven portion 18xx. The split nut 92a has a second uneven portion 92ax. The support member 92b has a male screw portion 92bx. The ring gear 90 has a gear portion 90x and a female thread portion 90y.
　モータ８６は、リンクハウジング１６に固定される。モータ８６は、出力軸８６ａを有する。出力軸８６ａは、例えば、型開閉方向に平行である。 The motor 86 is fixed to the link housing 16. The motor 86 has an output shaft 86a. The output shaft 86a is, for example, parallel to the mold opening / closing direction.
　ピニオン８８は、出力軸８６ａに同心状に固定される。ピニオン８８は、例えば、いわゆる外歯車且つ平歯車である。ピニオン８８は、外周に型開閉方向に切られた複数の歯を有している。ピニオン８８は、出力軸８６ａと共にその軸回りに回転する。 The pinion 88 is concentrically fixed to the output shaft 86a. The pinion 88 is, for example, a so-called external gear and spur gear. The pinion 88 has a plurality of teeth cut in the mold opening / closing direction on the outer periphery. The pinion 88 rotates around the output shaft 86a together with the output shaft 86a.
　リングギア９０は、環状である。リングギア９０は、タイバー１８を囲む。リングギア９０は、分割ナット装置９２の支持部材９２ｂを囲む。 The ring gear 90 is annular. The ring gear 90 surrounds the tie bar 18. The ring gear 90 surrounds the support member 92b of the split nut device 92.
　リングギア９０は、外周側にピニオン８８に噛み合うギア部９０ｘを有する。ギア部９０ｘは、外周に型開閉方向に切られた複数の歯を有している。リングギア９０は、ピニオン８８の回転に伴い、タイバー１８の回りを回転可能である。リングギア９０は、ピニオン８８を介してモータ８６により駆動される。ピニオン８８とリングギア９０は、例えば、噛み合わせを維持した状態で、型開閉方向に相対移動が可能である。 The ring gear 90 has a gear portion 90x that meshes with the pinion 88 on the outer peripheral side. The gear portion 90x has a plurality of teeth cut in the mold opening / closing direction on the outer periphery. The ring gear 90 can rotate around the tie bar 18 as the pinion 88 rotates. The ring gear 90 is driven by a motor 86 via a pinion 88. The pinion 88 and the ring gear 90 can be relatively moved in the mold opening / closing direction, for example, while maintaining meshing.
　リングギア９０は、内周側に雌ねじ部９０ｙを有する。雌ねじ部９０ｙは、支持部材９２ｂに設けられた雄ねじ部９２ｂｘに噛み合う。雌ねじ部９０ｙの型開閉方向のピッチは、例えば、５ｍｍ以上２０ｍｍ以下である。 The ring gear 90 has a female threaded portion 90y on the inner peripheral side. The female threaded portion 90y meshes with the male threaded portion 92bx provided on the support member 92b. The pitch of the female threaded portion 90y in the mold opening / closing direction is, for example, 5 mm or more and 20 mm or less.
　リングギア９０の型開閉方向に垂直な方向の厚さ（図４中のｔ）は、例えば、開閉方向にリンクハウジング１６に向かって連続的に薄くなる。 The thickness of the ring gear 90 in the direction perpendicular to the mold opening / closing direction (t in FIG. 4) becomes continuously thinner toward the link housing 16 in the opening / closing direction, for example.
　タイバー１８の被係合部１８ｘは、第１の凹凸部１８ｘｘを有する。第１の凹凸部１８ｘｘの型開閉方向のピッチは、例えば、２０ｍｍ以上１００ｍｍ以下である。 The engaged portion 18x of the tie bar 18 has a first uneven portion 18xx. The pitch of the first uneven portion 18xx in the mold opening / closing direction is, for example, 20 mm or more and 100 mm or less.
　分割ナット装置９２は、タイバー１８の被係合部１８ｘを固定可能である。分割ナット装置９２は、リングギア９０の回転により型開閉方向に移動可能である。 The split nut device 92 can fix the engaged portion 18x of the tie bar 18. The split nut device 92 can be moved in the mold opening / closing direction by the rotation of the ring gear 90.
　分割ナット９２ａは、例えば、ナットが２つに分割されたハーフナットである。分割ナット９２ａは、第２の凹凸部９２ａｘを有する。第２の凹凸部９２ａｘは、第１の凹凸部１８ｘｘと対向する。 The split nut 92a is, for example, a half nut in which the nut is split into two. The split nut 92a has a second uneven portion 92ax. The second uneven portion 92ax faces the first uneven portion 18xx.
　第２の凹凸部９２ａｘは、第１の凹凸部１８ｘｘに係合可能である。第２の凹凸部９２ａｘを第１の凹凸部１８ｘｘに係合することで、タイバー１８が分割ナット装置９２に固定される。 The second uneven portion 92ax can engage with the first uneven portion 18xx. By engaging the second uneven portion 92ax with the first uneven portion 18xx, the tie bar 18 is fixed to the split nut device 92.
　第２の凹凸部９２ａｘは、例えば、テーパ形状を有する。 The second uneven portion 92ax has, for example, a tapered shape.
　第２の凹凸部９２ａｘの型開閉方向のピッチは、例えば、２０ｍｍ以上１００ｍｍ以下である。第２の凹凸部９２ａｘの型開閉方向のピッチは、例えば、雌ねじ部９０ｙの型開閉方向のピッチよりも大きい。 The pitch of the second uneven portion 92ax in the mold opening / closing direction is, for example, 20 mm or more and 100 mm or less. The pitch of the second uneven portion 92ax in the mold opening / closing direction is larger than the pitch of the female screw portion 90y in the mold opening / closing direction, for example.
　第２の凹凸部９２ａｘの高さは、例えば、雌ねじ部９０ｙの高さよりも大きい。第２の凹凸部９２ａｘの高さとは、第２の凹凸部９２ａｘの凹部の底から凸部の頂部までの、型開閉方向に垂直な方向の長さである。また、雌ねじ部９０ｙの高さとは、雌ねじ部９０ｙのねじ溝の底からねじ山の頂部までの、型開閉方向に垂直な方向の長さである。 The height of the second uneven portion 92ax is larger than the height of the female screw portion 90y, for example. The height of the second uneven portion 92ax is the length from the bottom of the concave portion of the second uneven portion 92ax to the top of the convex portion in the direction perpendicular to the mold opening / closing direction. The height of the female threaded portion 90y is the length of the female threaded portion 90y from the bottom of the thread groove to the top of the thread in the direction perpendicular to the mold opening / closing direction.
　第２の凹凸部９２ａｘの型開閉方向の長さ（図４中のＬ２）は、例えば、雌ねじ部９０ｙの型開閉方向の長さ（図４中のＬ１）よりも小さい。 The length of the second uneven portion 92ax in the mold opening / closing direction (L2 in FIG. 4) is smaller than, for example, the length of the female screw portion 90y in the mold opening / closing direction (L1 in FIG. 4).
　支持部材９２ｂは、分割ナット９２ａを支持する。分割ナット９２ａは、支持部材９２ｂにより、型開閉方向に垂直な方向に摺動可能に支持される。 The support member 92b supports the split nut 92a. The split nut 92a is slidably supported by the support member 92b in a direction perpendicular to the mold opening / closing direction.
　支持部材９２ｂはタイバー１８を囲む。支持部材９２ｂは、環状である。 The support member 92b surrounds the tie bar 18. The support member 92b is annular.
　支持部材９２ｂの一部は、リングギア９０に囲まれる。支持部材９２ｂの一部は雄ねじ部９２ｂｘを有する。雄ねじ部９２ｂｘは、リングギア９０の雌ねじ部９０ｙと噛み合う。 A part of the support member 92b is surrounded by the ring gear 90. A part of the support member 92b has a male screw portion 92bx. The male threaded portion 92bx meshes with the female threaded portion 90y of the ring gear 90.
　アクチュエータ９３は、分割ナット９２ａを型開閉方向に垂直な方向に移動させる機能を有する。アクチュエータ９３を用いて、分割ナット９２ａの第２の凹凸部９２ａｘは、第１の凹凸部１８ｘｘに係合される。アクチュエータ９３を用いて、タイバー１８を調整機構３０に対し固定又は非固定（解放）の状態にすることが可能である。 The actuator 93 has a function of moving the split nut 92a in a direction perpendicular to the mold opening / closing direction. Using the actuator 93, the second uneven portion 92ax of the split nut 92a is engaged with the first uneven portion 18xx. The actuator 93 can be used to bring the tie bar 18 into a fixed or non-fixed (released) state with respect to the adjusting mechanism 30.
　アクチュエータ９３は、例えば、エアシリンダである。アクチュエータ９３は、例えば、油圧シリンダであっても構わない。 The actuator 93 is, for example, an air cylinder. The actuator 93 may be, for example, a hydraulic cylinder.
　第１のタイバーガイド９４は、タイバー１８と支持部材９２ｂとの間に設けられる。第１のタイバーガイド９４は、タイバー１８の支持部材９２ｂに対する型開閉方向の移動を潤滑にする機能を有する。 The first tie bar guide 94 is provided between the tie bar 18 and the support member 92b. The first tie bar guide 94 has a function of lubricating the movement of the tie bar 18 with respect to the support member 92b in the mold opening / closing direction.
　第２のタイバーガイド９５は、タイバー１８とリンクハウジング１６との間に設けられる。第２のタイバーガイド９５は、タイバー１８のリンクハウジング１６に対する型開閉方向の移動を潤滑にする機能を有する。 The second tie bar guide 95 is provided between the tie bar 18 and the link housing 16. The second tie bar guide 95 has a function of lubricating the movement of the tie bar 18 with respect to the link housing 16 in the mold opening / closing direction.
　以下、調整機構３０の動作について説明する。図５は、実施形態の調整機構の動作の説明図である。 Hereinafter, the operation of the adjustment mechanism 30 will be described. FIG. 5 is an explanatory diagram of the operation of the adjustment mechanism of the embodiment.
　モータ８６の回転によりピニオン８８が回転する。ピニオン８８は、出力軸８６ａの回りを回転する。 The pinion 88 rotates due to the rotation of the motor 86. The pinion 88 rotates around the output shaft 86a.
　ピニオン８８の回転により、ピニオン８８に噛み合うリングギア９０が回転する。リングギア９０は、タイバー１８及び支持部材９２ｂの回りを回転する。 The rotation of the pinion 88 causes the ring gear 90 that meshes with the pinion 88 to rotate. The ring gear 90 rotates around the tie bar 18 and the support member 92b.
　リングギア９０の雌ねじ部９０ｙと、支持部材９２ｂの雄ねじ部９２ｂｘが噛み合っているため、リングギア９０の回転に伴い、支持部材９２ｂは型開閉方向に移動する。リングギア９０の回転運動は、支持部材９２ｂの直進運動に変換される。 Since the female threaded portion 90y of the ring gear 90 and the male threaded portion 92bx of the support member 92b are in mesh with each other, the support member 92b moves in the mold opening / closing direction as the ring gear 90 rotates. The rotational movement of the ring gear 90 is converted into a linear movement of the support member 92b.
　モータ８６の回転方向を変えることで、リングギア９０の回転方向が変わる。リングギア９０の回転方向に応じて、支持部材９２ｂは型開方向又は型閉方向に進む。 By changing the rotation direction of the motor 86, the rotation direction of the ring gear 90 changes. Depending on the rotation direction of the ring gear 90, the support member 92b advances in the mold opening direction or the mold closing direction.
　支持部材９２ｂが型開閉方向に移動することで、支持部材９２ｂに支持された分割ナット９２ａも型開閉方向に移動する。分割ナット９２ａは、タイバー１８の被係合部１８ｘに対して型開閉方向に移動する。 When the support member 92b moves in the mold opening / closing direction, the split nut 92a supported by the support member 92b also moves in the mold opening / closing direction. The split nut 92a moves in the mold opening / closing direction with respect to the engaged portion 18x of the tie bar 18.
　分割ナット９２ａが型開閉方向に移動することで、分割ナット９２ａの第２の凹凸部９２ａｘと、被係合部１８ｘの第１の凹凸部１８ｘｘを、水平方向の位置ずれなく噛み合わせることが可能となる。 By moving the split nut 92a in the mold opening / closing direction, the second uneven portion 92ax of the split nut 92a and the first uneven portion 18xx of the engaged portion 18x can be engaged with each other without any horizontal positional deviation. Will be.
　分割ナット装置９２の型開閉方向の移動可能量は、例えば、第１の凹凸部１８ｘｘのピッチの１倍以上２倍以下である。すなわち、分割ナット９２ａの型開閉方向の移動可能量は、例えば、第１の凹凸部１８ｘｘのピッチの１倍以上２倍以下である。 The movable amount of the split nut device 92 in the mold opening / closing direction is, for example, 1 times or more and 2 times or less the pitch of the first uneven portion 18xx. That is, the movable amount of the split nut 92a in the mold opening / closing direction is, for example, 1 times or more and 2 times or less the pitch of the first uneven portion 18xx.
　制御装置４３は、ダイカストマシン１００の成形動作を制御する。制御装置４３は、例えば、トグル機構２４、トグル移動機構２６、押出機構２８、タイバー固定機構２９、第１の調整機構３０ａ、第２の調整機構３０ｂ、第３の調整機構３０ｃ、第４の調整機構３０ｄ、及び射出装置３２の動作を制御する。制御装置４３は、第１の調整機構３０ａ、第２の調整機構３０ｂ、第３の調整機構３０ｃ、及び第４の調整機構３０ｄの動作を独立に制御する。 The control device 43 controls the molding operation of the die casting machine 100. The control device 43 may include, for example, a toggle mechanism 24, a toggle moving mechanism 26, an extrusion mechanism 28, a tie bar fixing mechanism 29, a first adjustment mechanism 30a, a second adjustment mechanism 30b, a third adjustment mechanism 30c, and a fourth adjustment. It controls the operation of the mechanism 30d and the injection device 32. The control device 43 independently controls the operations of the first adjusting mechanism 30a, the second adjusting mechanism 30b, the third adjusting mechanism 30c, and the fourth adjusting mechanism 30d.
　制御装置３４は、例えば、第１の測定器３６ａ、第２の測定器３６ｂ、第３の測定器３６ｃ、及び第４の測定器３６ｄの測定結果に基づき、第１の調整機構３０ａ、第２の調整機構３０ｂ、第３の調整機構３０ｃ、及び第４の調整機構３０ｄの動作を独立に制御する。制御装置３４は、例えば、第１の成形動作の際に得られた第１の測定器３６ａ、第２の測定器３６ｂ、第３の測定器３６ｃ、及び第４の測定器３６ｄの測定結果に基づき、第２の成形動作の前に、第１のタイバー１８ａ、第２のタイバー１８ｂ、第３のタイバー１８ｃ、及び第４のタイバー１８ｄに加わる応力が、最適値となるように、第１の調整機構３０ａ、第２の調整機構３０ｂ、第３の調整機構３０ｃ、及び第４の調整機構３０ｄの動作を独立に制御する。制御装置３４は、例えば、第１の成形動作の際に得られた第１の測定器３６ａ、第２の測定器３６ｂ、第３の測定器３６ｃ、及び第４の測定器３６ｄの測定結果に基づき、第２の成形動作の前に、第１のタイバー１８ａ、第２のタイバー１８ｂ、第３のタイバー１８ｃ、及び第４のタイバー１８ｄに加わる応力の差分が、第１の成形動作よりも小さくなるように、第１の調整機構３０ａ、第２の調整機構３０ｂ、第３の調整機構３０ｃ、及び第４の調整機構３０ｄの動作を独立に制御する。 The control device 34 is, for example, based on the measurement results of the first measuring instrument 36a, the second measuring instrument 36b, the third measuring instrument 36c, and the fourth measuring instrument 36d, and the first adjusting mechanism 30a, the second. The operation of the adjusting mechanism 30b, the third adjusting mechanism 30c, and the fourth adjusting mechanism 30d is independently controlled. The control device 34 is, for example, based on the measurement results of the first measuring instrument 36a, the second measuring instrument 36b, the third measuring instrument 36c, and the fourth measuring instrument 36d obtained in the first molding operation. Based on this, prior to the second molding operation, the stress applied to the first tie bar 18a, the second tie bar 18b, the third tie bar 18c, and the fourth tie bar 18d is set to the optimum value. The operation of the adjusting mechanism 30a, the second adjusting mechanism 30b, the third adjusting mechanism 30c, and the fourth adjusting mechanism 30d is independently controlled. The control device 34 is, for example, based on the measurement results of the first measuring instrument 36a, the second measuring instrument 36b, the third measuring instrument 36c, and the fourth measuring instrument 36d obtained in the first molding operation. Based on this, the difference in stress applied to the first tie bar 18a, the second tie bar 18b, the third tie bar 18c, and the fourth tie bar 18d before the second molding operation is smaller than that of the first molding operation. As such, the operations of the first adjusting mechanism 30a, the second adjusting mechanism 30b, the third adjusting mechanism 30c, and the fourth adjusting mechanism 30d are independently controlled.
　制御装置３４は、例えば、ハードウェアとソフトウェアとの組み合わせで構成される。制御装置３４は、例えば、ＣＰＵ、及び半導体メモリを含む。制御装置３４は、例えば、半導体メモリに記憶された制御プログラムを含む。 The control device 34 is composed of, for example, a combination of hardware and software. The control device 34 includes, for example, a CPU and a semiconductor memory. The control device 34 includes, for example, a control program stored in a semiconductor memory.
　表示装置３５は、例えば、制御装置３４の前面に設けられる。表示装置３５は、例えば、オペレータの入力操作を受け付ける。オペレータは、表示装置３５を用いて、ダイカストマシン１００の成形条件等の設定が可能となる。また、表示装置３５は、例えば、ダイカストマシン１００の成形条件、動作状況等を画面に表示する。入力表示装置３５は、例えば、液晶ディスプレイ又は有機ＥＬディスプレイである。 The display device 35 is provided, for example, on the front surface of the control device 34. The display device 35 accepts, for example, an operator's input operation. The operator can set the molding conditions and the like of the die casting machine 100 by using the display device 35. Further, the display device 35 displays, for example, the molding conditions, the operating status, and the like of the die casting machine 100 on the screen. The input display device 35 is, for example, a liquid crystal display or an organic EL display.
　次に、実施形態の成形機を用いた成形動作について、説明する。図６は、実施形態の成形機の成形動作のフロー図である。図７ないし図１０は、実施形態の成形機を用いた成形動作の説明図である。 Next, the molding operation using the molding machine of the embodiment will be described. FIG. 6 is a flow chart of a molding operation of the molding machine of the embodiment. 7 to 10 are explanatory views of a molding operation using the molding machine of the embodiment.
　実施形態のダイカストマシン１００の成形動作は、図６に示すように、型厚情報取得ステップ（Ｓ０１）、分割ナット閉位置演算ステップ（Ｓ０２）、分割ナット閉位置調整ステップ（Ｓ０３）、可動ダイプレート前進ステップ（Ｓ０４）、分割ナット閉ステップ（Ｓ０５）、型締めステップ（Ｓ０６）、射出ステップ（Ｓ０７）、型開きステップ（Ｓ０８）、分割ナット開ステップ（Ｓ０８）、可動ダイプレート後退ステップ（Ｓ１０）、分割ナット閉位置演算ステップ（Ｓ１１）、分割ナット閉位置個別調整ステップ（Ｓ１２）、及び押出ステップ（Ｓ１３）を備える。 As shown in FIG. 6, the molding operation of the die casting machine 100 of the embodiment includes a mold thickness information acquisition step (S01), a split nut closing position calculation step (S02), a split nut closing position adjustment step (S03), and a movable die plate. Forward step (S04), split nut closing step (S05), mold tightening step (S06), injection step (S07), mold opening step (S08), split nut opening step (S08), movable die plate retracting step (S10) , The split nut closing position calculation step (S11), the split nut closing position individual adjustment step (S12), and the extrusion step (S13) are provided.
　型厚情報取得ステップ（Ｓ０１）において、ダイカストマシン１００は、いわゆる、型開限の状態である。型厚情報取得ステップ（Ｓ０１）において、ダイカストマシン１００は、型厚情報を取得する。型厚情報は、固定金型２０の厚さと可動金型２２の厚さの和である金型の厚さの情報である。 In the mold thickness information acquisition step (S01), the die casting machine 100 is in a so-called mold opening state. In the mold thickness information acquisition step (S01), the die casting machine 100 acquires mold thickness information. The mold thickness information is information on the thickness of the mold, which is the sum of the thickness of the fixed mold 20 and the thickness of the movable mold 22.
　型厚情報は、例えば、オペレータによって表示装置３５から入力される。型厚情報は、例えば、あらかじめ制御装置３４の中の半導体メモリに記憶されている。 The mold thickness information is input from the display device 35 by the operator, for example. The mold thickness information is stored in advance in the semiconductor memory in the control device 34, for example.
　分割ナット閉位置演算ステップ（Ｓ０２）では、型厚情報を基に、制御装置３４が分割ナット装置９２の型開閉方向の分割ナット閉位置を演算し決定する。分割ナット閉位置は、分割ナット９２ａを閉じた際に、分割ナット９２ａの第２の凹凸部９２ａｘと、被係合部１８ｘの第１の凹凸部１８ｘｘが、水平方向の位置ずれなく噛み合わせることが可能な位置である。 In the split nut closing position calculation step (S02), the control device 34 calculates and determines the split nut closing position in the mold opening / closing direction of the split nut device 92 based on the mold thickness information. The split nut closing position is such that when the split nut 92a is closed, the second uneven portion 92ax of the split nut 92a and the first uneven portion 18xx of the engaged portion 18x mesh with each other without any horizontal positional deviation. Is a possible position.
　分割ナット閉位置は、例えば、あらかじめ制御装置３４に記憶された被係合部１８ｘの第１の凹凸部１８ｘｘの位置情報と、型厚情報から算出することが可能である。 The split nut closing position can be calculated from, for example, the position information of the first uneven portion 18xx of the engaged portion 18x stored in the control device 34 in advance and the mold thickness information.
　分割ナット閉位置調整ステップ（Ｓ０３）では、分割ナット閉位置演算ステップ（Ｓ０２）で決定された分割ナット閉位置へ分割ナット９２ａを移動する。具体的には、図７に示すように、制御装置３４からの指令により、モータ８６を所定の方向に所定の量だけ回転し、分割ナット装置９２を所定の量だけ型開閉方向に移動する。 In the split nut closing position adjustment step (S03), the split nut 92a is moved to the split nut closing position determined in the split nut closing position calculation step (S02). Specifically, as shown in FIG. 7, according to a command from the control device 34, the motor 86 is rotated by a predetermined amount in a predetermined direction, and the split nut device 92 is moved by a predetermined amount in the mold opening / closing direction.
　可動ダイプレート前進ステップ（Ｓ０４）では、リンクハウジング１６及び可動ダイプレート１４を型閉方向に前進させる。リンクハウジング１６及び可動ダイプレート１４は、トグル移動機構２６を用いて移動される。リンクハウジング１６及び可動ダイプレート１４は、固定金型２０に可動金型２２が接触するまで前進する。 In the movable die plate forward step (S04), the link housing 16 and the movable die plate 14 are advanced in the mold closing direction. The link housing 16 and the movable die plate 14 are moved by using the toggle moving mechanism 26. The link housing 16 and the movable die plate 14 advance until the movable mold 22 comes into contact with the fixed mold 20.
　分割ナット閉ステップ（Ｓ０５）では、分割ナット９２ａを閉じる。具体的には、図８に示すように、制御装置３４からの指令により、アクチュエータ９３を駆動し、分割ナット９２ａの第２の凹凸部９２ａｘと、被係合部１８ｘの第１の凹凸部１８ｘｘを噛み合わせる。 In the split nut closing step (S05), the split nut 92a is closed. Specifically, as shown in FIG. 8, the actuator 93 is driven by a command from the control device 34, and the second uneven portion 92ax of the split nut 92a and the first uneven portion 18xx of the engaged portion 18x are driven. Engage.
　図９は、図８の場合よりも金型の厚さが薄い場合を示す。図９に示すように、金型の厚さが薄い場合は、タイバー１８の実効長が図８の場合よりも短くなる位置で、第２の凹凸部９２ａｘと第２の凹凸部９２ａｘが噛み合う。タイバー１８の実効長とは、型締めを行った後の固定ダイプレート１２とリンクハウジング１６との間の距離である。 FIG. 9 shows a case where the mold is thinner than the case of FIG. As shown in FIG. 9, when the thickness of the mold is thin, the second uneven portion 92ax and the second uneven portion 92ax mesh with each other at a position where the effective length of the tie bar 18 is shorter than that in the case of FIG. The effective length of the tie bar 18 is the distance between the fixed die plate 12 and the link housing 16 after molding.
　型締めステップ（Ｓ０６）では、トグル機構２４を用いて型締めを行う。固定金型２０に可動金型２２との間に型締力が加えられる。型締力によりタイバー１８が伸び、タイバー１８に引っ張り応力が加わる。 In the mold clamping step (S06), the mold is clamped using the toggle mechanism 24. A mold clamping force is applied to the fixed mold 20 between the fixed mold 20 and the movable mold 22. The tie bar 18 is stretched by the mold clamping force, and tensile stress is applied to the tie bar 18.
　第１のタイバー１８ａ、第２のタイバー１８ｂ、第３のタイバー１８ｃ、及び第４のタイバー１８ｄのそれぞれに加わる引っ張り応力の大きさは、第１の測定器３６ａ、第２の測定器３６ｂ、第３の測定器３６ｃ、及び第４の測定器３６ｄを用いて独立に測定される。測定された結果は、例えば、制御装置３４に伝送され、制御装置３４に記憶される。 The magnitude of the tensile stress applied to each of the first tie bar 18a, the second tie bar 18b, the third tie bar 18c, and the fourth tie bar 18d is determined by the first measuring instrument 36a, the second measuring instrument 36b, and the second measuring instrument 36b. It is measured independently using the measuring instrument 36c of 3 and the measuring instrument 36d of the fourth. The measured result is transmitted to, for example, the control device 34 and stored in the control device 34.
　射出ステップ（Ｓ０７）では、射出装置３２を用いて射出動作が行われる。具体的には、例えば、図示しないホッパー等を用いて、開口部８２からスリーブ７４の中へ溶湯が供給される。そして、スリーブ７４内でプランジャチップ７６ａを前進させて溶湯を金型内の空洞Ｃａへ充填する。金型内の空洞Ｃａへ充填された溶湯が型締めされることで、ダイカスト品が製造される。 In the injection step (S07), the injection operation is performed using the injection device 32. Specifically, for example, a molten metal is supplied from the opening 82 into the sleeve 74 using a hopper or the like (not shown). Then, the plunger tip 76a is advanced in the sleeve 74 to fill the molten metal in the cavity Ca in the mold. A die-cast product is manufactured by molding the molten metal filled in the cavity Ca in the mold.
　型開きステップ（Ｓ０８）では、トグル機構２４を用いて型開きを行う。型開きステップ（Ｓ０８）では、固定金型２０と可動金型２２が離間する。 In the mold opening step (S08), the mold is opened using the toggle mechanism 24. In the mold opening step (S08), the fixed mold 20 and the movable mold 22 are separated from each other.
　分割ナット開ステップ（Ｓ０９）では、分割ナット９２ａを開く。具体的には、制御装置３４からの指令により、アクチュエータ９３を駆動し、分割ナット９２ａの第２の凹凸部９２ａｘと、被係合部１８ｘの第１の凹凸部１８ｘｘの噛み合わせを開放する。 In the split nut opening step (S09), the split nut 92a is opened. Specifically, the actuator 93 is driven by a command from the control device 34 to release the engagement between the second uneven portion 92ax of the split nut 92a and the first uneven portion 18xx of the engaged portion 18x.
　可動ダイプレート後退ステップ（Ｓ１０）では、リンクハウジング１６及び可動ダイプレート１４を型開方向に後退させる。リンクハウジング１６及び可動ダイプレート１４は、トグル移動機構２６を用いて移動される。 In the movable die plate retracting step (S10), the link housing 16 and the movable die plate 14 are retracted in the mold opening direction. The link housing 16 and the movable die plate 14 are moved by using the toggle moving mechanism 26.
　分割ナット閉位置個別演算ステップ（Ｓ１１）では、第１の測定器３６ａ、第２の測定器３６ｂ、第３の測定器３６ｃ、及び第４の測定器３６ｄを用いて測定された測定結果をもとに、第１のタイバー１８ａ、第２のタイバー１８ｂ、第３のタイバー１８ｃ、及び第４のタイバー１８ｄに加わる引っ張り応力が、最適値となるように、第１の調整機構３０ａ、第２の調整機構３０ｂ、第３の調整機構３０ｃ、及び第４の調整機構３０ｄのそれぞれの分割ナット装置９２の型開閉方向の分割ナット閉位置を制御装置３４が、個別に演算し決定する。例えば、第１のタイバー１８ａ、第２のタイバー１８ｂ、第３のタイバー１８ｃ、及び第４のタイバー１８ｄに加わる引っ張り応力の差分が、第１の成形動作よりも小さくなる分割ナット閉位置を、制御装置３４が個別に演算し決定する。 In the split nut closed position individual calculation step (S11), the measurement results measured using the first measuring instrument 36a, the second measuring instrument 36b, the third measuring instrument 36c, and the fourth measuring instrument 36d are also included. In addition, the first adjusting mechanism 30a and the second adjusting mechanism 30a so that the tensile stress applied to the first tie bar 18a, the second tie bar 18b, the third tie bar 18c, and the fourth tie bar 18d becomes an optimum value. The control device 34 individually calculates and determines the split nut closing position in the mold opening / closing direction of each of the split nut devices 92 of the adjusting mechanism 30b, the third adjusting mechanism 30c, and the fourth adjusting mechanism 30d. For example, the split nut closing position where the difference in tensile stress applied to the first tie bar 18a, the second tie bar 18b, the third tie bar 18c, and the fourth tie bar 18d is smaller than that of the first molding operation is controlled. The device 34 individually calculates and determines.
　例えば、第１の測定器３６ａで測定された第１のタイバー１８ａに加わった引っ張り応力だけが大きかった場合、分割ナット閉位置個別演算ステップ（Ｓ１１）では、第２の成形動作の際に、第１のタイバー１８ａに加わる引っ張り応力が小さくなるように、第１の調整機構３０ａの分割ナット閉位置を決定する。この場合、第１のタイバー１８ａの実効長が他のタイバー１８の実効長よりも長くなるように、第１の調整機構３０ａの分割ナット閉位置を決定する。 For example, when only the tensile stress applied to the first tie bar 18a measured by the first measuring instrument 36a is large, in the split nut closing position individual calculation step (S11), the second molding operation is performed. The closing position of the split nut of the first adjusting mechanism 30a is determined so that the tensile stress applied to the tie bar 18a of 1 becomes small. In this case, the split nut closing position of the first adjusting mechanism 30a is determined so that the effective length of the first tie bar 18a is longer than the effective length of the other tie bars 18.
　分割ナット閉位置個別調整ステップ（Ｓ１２）では、分割ナット閉位置個別演算ステップ（Ｓ１１）で決定された分割ナット閉位置へ分割ナット９２ａを移動する。具体的には、例えば、図１０に示すように、制御装置３４からの指令により、第１の調整機構３０ａのモータ８６のみを所定の量だけ回転し、第１の調整機構３０ａの分割ナット装置９２のみを所定の量だけ型開閉方向に移動する。 In the split nut closing position individual adjustment step (S12), the split nut 92a is moved to the split nut closing position determined in the split nut closing position individual calculation step (S11). Specifically, for example, as shown in FIG. 10, according to a command from the control device 34, only the motor 86 of the first adjusting mechanism 30a is rotated by a predetermined amount, and the split nut device of the first adjusting mechanism 30a is rotated. Only 92 is moved in the mold opening / closing direction by a predetermined amount.
　押出ステップ（Ｓ１３）では、押出機構２８を用いてダイカスト品の押し出しを行う。具体的には、押出モータ５６を駆動することにより、押出ピン６４が可動金型２２に対して相対的に型閉方向に移動し、ダイカスト品が可動金型２２から押し出される。可動金型２２から押し出されたダイカスト品は、例えば、図示しないロボットアームを用いてピックアップされる。 In the extrusion step (S13), the die-cast product is extruded using the extrusion mechanism 28. Specifically, by driving the extrusion motor 56, the extrusion pin 64 moves in the mold closing direction relative to the movable mold 22, and the die-cast product is extruded from the movable mold 22. The die-cast product extruded from the movable mold 22 is picked up using, for example, a robot arm (not shown).
　以上の第１の成形動作により、ダイカスト品が製造される。次のダイカスト品を製造する場合には、可動ダイプレート前進ステップ（Ｓ０４）から第２の成形動作を開始する。 A die-cast product is manufactured by the above first molding operation. When the next die-cast product is manufactured, the second molding operation is started from the movable die plate advancing step (S04).
　なお、分割ナット閉位置個別演算ステップ（Ｓ１１）及び分割ナット閉位置個別調整ステップ（Ｓ１２）を実行するタイミングは、必ずしも可動ダイプレート後退ステップ（Ｓ１０）と押出ステップ（Ｓ１３）との間でなくとも構わない。例えば、分割ナット閉位置個別演算ステップ（Ｓ１１）は、射出ステップ（Ｓ０７）以降、第２の成形動作の可動ダイプレート前進ステップ（Ｓ０４）の前に実行されれば構わない。また、分割ナット閉位置個別調整ステップ（Ｓ１２）は、可動ダイプレート後退ステップ（Ｓ１０）以降、第２の成形動作の可動ダイプレート前進ステップ（Ｓ０４）の前に実行されれば構わない。 The timing of executing the split nut closed position individual calculation step (S11) and the split nut closed position individual adjustment step (S12) does not necessarily have to be between the movable die plate retracting step (S10) and the extrusion step (S13). I do not care. For example, the split nut closing position individual calculation step (S11) may be executed after the injection step (S07) and before the movable die plate advancing step (S04) of the second molding operation. Further, the split nut closing position individual adjustment step (S12) may be executed after the movable die plate retracting step (S10) and before the movable die plate advancing step (S04) of the second molding operation.
　次に、実施形態の成形機の作用及び効果について説明する。 Next, the operation and effect of the molding machine of the embodiment will be described.
　ダイカストマシンでは、ダイカスト品を成形した後、異なる種類のダイカスト品を成形する際に、金型が交換される。交換後の金型の型厚に応じてタイバー１８の実効長を変更する必要が生じる。 In the die casting machine, after molding the die casting product, the mold is replaced when molding a different type of die casting product. It becomes necessary to change the effective length of the tie bar 18 according to the mold thickness after replacement.
　実施形態のダイカストマシン１００では、調整機構３０の分割ナット装置９２は、型開閉方向に連続的に移動することが可能である。このため、タイバー１８の固定位置を任意に変更することが可能である。したがって、タイバー１８の実効長を任意の長さに変更することが可能である。言い換えれば、任意の型厚の金型に対して最適な位置でタイバー１８を固定することが可能である。 In the die casting machine 100 of the embodiment, the split nut device 92 of the adjusting mechanism 30 can continuously move in the mold opening / closing direction. Therefore, the fixed position of the tie bar 18 can be arbitrarily changed. Therefore, it is possible to change the effective length of the tie bar 18 to any length. In other words, it is possible to fix the tie bar 18 at an optimum position for a mold having an arbitrary mold thickness.
　ダイカストマシンでは、型締めされた状態で、複数のタイバー１８の間で、タイバー１８に加わる引っ張り応力に差が生じる場合がある。タイバー１８に加わる引っ張り応力に差が生じると、例えば、金型に加わる応力の分布が不均一になり、成形したダイカスト品が不良となるおそれがある。すなわち、ダイカスト品の歩留まりが低下するおそれがある。また、過剰に引っ張り応力が加わったタイバー１８が破損するおそれがある。 In the die casting machine, there may be a difference in the tensile stress applied to the tie bar 18 among the plurality of tie bars 18 in the molded state. If there is a difference in the tensile stress applied to the tie bar 18, for example, the distribution of the stress applied to the mold becomes non-uniform, and the molded die-cast product may be defective. That is, the yield of die-cast products may decrease. In addition, the tie bar 18 to which excessive tensile stress is applied may be damaged.
　実施形態のダイカストマシン１００では、第１の調整機構３０ａ、第２の調整機構３０ｂ、第３の調整機構３０ｃ、及び第４の調整機構３０ｄを用いて、第１のタイバー１８ａ、第２のタイバー１８ｂ、第３のタイバー１８ｃ、及び第４のタイバー１８ｄに加わる引っ張り応力を独立して調整が可能である。したがって、例えば、タイバー１８に加わる引っ張り応力を均等にすることが可能となる。よって、例えば、タイバー１８の破損を抑制することが可能となる。 In the die casting machine 100 of the embodiment, the first tie bar 18a and the second tie bar are used by using the first adjustment mechanism 30a, the second adjustment mechanism 30b, the third adjustment mechanism 30c, and the fourth adjustment mechanism 30d. The tensile stress applied to the 18b, the third tie bar 18c, and the fourth tie bar 18d can be adjusted independently. Therefore, for example, it is possible to equalize the tensile stress applied to the tie bar 18. Therefore, for example, it is possible to suppress damage to the tie bar 18.
　第２の凹凸部９２ａｘと雌ねじ部９０ｙには、型締めの際に同程度の力を支える必要がある。第２の凹凸部９２ａｘと雌ねじ部９０ｙが、同程度の力を支える観点から、第２の凹凸部９２ａｘのピッチが雌ねじ部９０ｙのピッチより大きく、第２の凹凸部９２ａｘの型開閉方向の長さ（図４中のＬ２）が雌ねじ部９０ｙの長さ（図４中のＬ１）よりも小さいことが好ましい。また、第２の凹凸部９２ａｘと雌ねじ部９０ｙが、同程度の力を支える観点から、第２の凹凸部９２ａｘの高さが雌ねじ部９０ｙの高さよりも大きいことが好ましい。 It is necessary for the second uneven portion 92ax and the female screw portion 90y to support the same degree of force during mold clamping. From the viewpoint that the second uneven portion 92ax and the female threaded portion 90y support the same degree of force, the pitch of the second uneven portion 92ax is larger than the pitch of the female threaded portion 90y, and the length of the second uneven portion 92ax in the mold opening / closing direction is long. It is preferable that the length (L2 in FIG. 4) is smaller than the length of the female threaded portion 90y (L1 in FIG. 4). Further, from the viewpoint that the second uneven portion 92ax and the female screw portion 90y support the same degree of force, it is preferable that the height of the second uneven portion 92ax is larger than the height of the female screw portion 90y.
　第１の凹凸部１８ｘｘ及び第２の凹凸部９２ａｘは、テーパ形状を有することが好ましい。第１の凹凸部１８ｘｘ及び第２の凹凸部９２ａｘがテーパ形状を有することで、第１の凹凸部１８ｘｘと第２の凹凸部９２ａｘとの係合が容易となる。 It is preferable that the first uneven portion 18xx and the second uneven portion 92ax have a tapered shape. Since the first uneven portion 18xx and the second uneven portion 92ax have a tapered shape, the engagement between the first uneven portion 18xx and the second uneven portion 92ax becomes easy.
　リングギア９０の型開閉方向に垂直な方向の厚さ（図４中のｔ）は、例えば、型開閉方向にリンクハウジング１６に向かって連続的に薄くなることが好ましい。上記構成により、型締め時に、リンクハウジング１６の側の雌ねじ部９０ｙの端部の応力集中が低減される。型開閉方向に垂直な方向の厚さｔが薄くなることにより、リンクハウジング１６が変形しやすくなり、雌ねじ部９０ｙの端部の応力集中が低減する。 It is preferable that the thickness of the ring gear 90 in the direction perpendicular to the mold opening / closing direction (t in FIG. 4) becomes continuously thinner toward the link housing 16 in the mold opening / closing direction, for example. With the above configuration, stress concentration at the end of the female threaded portion 90y on the side of the link housing 16 is reduced during mold clamping. By reducing the thickness t in the direction perpendicular to the mold opening / closing direction, the link housing 16 is easily deformed, and the stress concentration at the end of the female threaded portion 90y is reduced.
　タイバー１８の破損を抑制する観点から、制御装置４３は、第１の成形動作の際に得られた第１の測定器３６ａ、第２の測定器３６ｂ、第３の測定器３６ｃ、及び第４の測定器３６ｄの測定結果に基づき、第１の成形動作に続く第２の成形動作の前に、第１のタイバー１８ａ、第２のタイバー１８ｂ、第３のタイバー１８ｃ、及び第４のタイバー１８ｄに加わる応力の差分が、第１の成形動作よりも小さくなるように、第１の調整機構３０ａ、第２の調整機構３０ｂ、第３の調整機構３０ｃ、及び第４の調整機構３０ｄを制御することが好ましい。 From the viewpoint of suppressing damage to the tie bar 18, the control device 43 includes a first measuring instrument 36a, a second measuring instrument 36b, a third measuring instrument 36c, and a fourth measuring instrument 36a obtained during the first molding operation. Based on the measurement result of the measuring instrument 36d, the first tie bar 18a, the second tie bar 18b, the third tie bar 18c, and the fourth tie bar 18d are performed before the second molding operation following the first molding operation. The first adjusting mechanism 30a, the second adjusting mechanism 30b, the third adjusting mechanism 30c, and the fourth adjusting mechanism 30d are controlled so that the difference in the stress applied to is smaller than that of the first forming operation. Is preferable.
　以上、実施形態によれば、複数のタイバーに加わる応力を独立して調整可能なダイカストマシンを提供することができる。 As described above, according to the embodiment, it is possible to provide a die casting machine that can independently adjust the stress applied to a plurality of tie bars.
　以上、具体例を参照しつつ本発明の実施形態について説明した。しかし、本発明は、これらの具体例に限定されるものではない。実施形態においては、成形機などで、本発明の説明に直接必要としない部分については記載を省略したが、必要とされる、成形機などに関わる要素を適宜選択して用いることができる。 The embodiment of the present invention has been described above with reference to specific examples. However, the present invention is not limited to these specific examples. In the embodiment, although the description of the portion of the molding machine or the like that is not directly necessary for the description of the present invention is omitted, the required elements related to the molding machine or the like can be appropriately selected and used.
　実施形態においては、ダイカストマシンを成形機の例として説明したが、本発明を射出成形機等に適用することも可能である。 In the embodiment, the die casting machine has been described as an example of a molding machine, but the present invention can also be applied to an injection molding machine or the like.
　実施形態においては、トグル機構を駆動する駆動装置がモータである場合を例に説明したが、例えば、駆動装置は油圧装置であっても構わない。 In the embodiment, the case where the drive device for driving the toggle mechanism is a motor has been described as an example, but for example, the drive device may be a hydraulic device.
　その他、本発明の要素を具備し、当業者が適宜設計変更しうる全ての成形機は、本発明の範囲に包含される。本発明の範囲は、特許請求の範囲及びその均等物の範囲によって定義されるものである。 In addition, all molding machines having the elements of the present invention and which can be appropriately redesigned by those skilled in the art are included in the scope of the present invention. The scope of the present invention is defined by the scope of claims and their equivalents.
１０　　　　ベース
１２　　　　固定ダイプレート
１４　　　　可動ダイプレート
１６　　　　リンクハウジング
１８ａ　　　第１のタイバー
１８ｂ　　　第２のタイバー
１８ｃ　　　第３のタイバー
１８ｄ　　　第４のタイバー
１８ｘ　　　被係合部
１８ｘｘ　　第１の凹凸部
１９　　　　タイバーナット
２０　　　　固定金型
２２　　　　可動金型
２４　　　　トグル機構
２６　　　　トグル移動機構
２８　　　　押出機構
３０　　　　タイバー固定機構
３０ａ　　　第１の調整機構
３０ｂ　　　第２の調整機構
３０ｃ　　　第３の調整機構
３０ｄ　　　第４の調整機構
３２　　　　射出装置
３４　　　　制御装置
３６ａ　　　第１の測定器
３６ｂ　　　第２の測定器
３６ｃ　　　第３の測定器
３６ｄ　　　第４の測定器
４０　　　　型締モータ（駆動装置）
８６　　　　モータ（電動機）
８６ａ　　　出力軸
８８　　　　ピニオン
９０　　　　リングギア
９０ｘ　　　ギア部
９０ｙ　　　雌ねじ部
９２　　　　分割ナット装置
９２ａ　　　分割ナット
９２aｘ　　第２の凹凸部
９２ｂ　　　支持部材
９２ｂｘ　　雄ねじ部
１００　　　ダイカストマシン（成形機）
Ｃａ　　　　空洞 10 Base 12 Fixed die plate 14 Movable die plate 16 Link housing 18a First tie bar 18b Second tie bar 18c Third tie bar 18d Fourth tie bar 18x Engagement part 18xx First uneven part 19 Tie bar nut 20 Fixing metal Mold 22 Movable mold 24 Toggle mechanism 26 Toggle movement mechanism 28 Extrusion mechanism 30 Tie bar fixing mechanism 30a First adjustment mechanism 30b Second adjustment mechanism 30c Third adjustment mechanism 30d Fourth adjustment mechanism 32 Injection device 34 Control device 36a 1st measuring instrument 36b 2nd measuring instrument 36c 3rd measuring instrument 36d 4th measuring instrument 40 type clamping motor (drive device)
86 motor (motor)
86a Output shaft 88 Pinion 90 Ring gear 90 x Gear part 90y Female thread part 92 Split nut device 92a Split nut 92a x Second uneven part 92b Support member 92b x Male thread part 100 Die casting machine (molding machine)
Ca cavity

Claims (8)

  1. 　ベースと、
    　前記ベースの上に固定され、固定金型を保持する固定ダイプレートと、
    　前記ベースの上に型開閉方向に移動可能に設けられ、可動金型を前記固定金型に対向して保持する可動ダイプレートと、
    　前記固定金型と前記可動金型の型締めが可能なトグル機構と、
    　前記ベースの上に前記型開閉方向に移動可能に設けられ、前記トグル機構のリンクの一端が固定されるリンクハウジングと、
    　前記トグル機構を駆動する駆動装置と、
    　一端を前記固定ダイプレートに固定可能で、前記型開閉方向に延び、他端に被係合部を有する第１のタイバーと、
    　一端を前記固定ダイプレートに固定可能で、前記型開閉方向に延び、他端に被係合部を有する第２のタイバーと、
    　一端を前記固定ダイプレートに固定可能で、前記型開閉方向に延び、他端に被係合部を有する第３のタイバーと、
    　一端を前記固定ダイプレートに固定可能で、前記型開閉方向に延び、他端に被係合部を有する第４のタイバーと、
    　前記第１のタイバーの前記他端の固定位置を調整する第１の調整機構と、
    　前記第２のタイバーの前記他端の固定位置を調整する第２の調整機構と、
    　前記第３のタイバーの前記他端の固定位置を調整する第３の調整機構と、
    　前記第４のタイバーの前記他端の固定位置を調整する第４の調整機構と、
    　溶湯を前記固定金型と前記可動金型とで形成される空洞内に充填する射出装置と、
    を備え、
    　前記第１の調整機構、前記第２の調整機構、前記第３の調整機構、及び前記第４の調整機構のそれぞれは、
    　前記リンクハウジングに固定される電動機と、
    　前記電動機を用いて駆動され、タイバーを囲む環状で、前記タイバーの回りを回転可能なリングギアと、
    　前記リングギアの回転により前記型開閉方向に移動可能で、前記被係合部を固定可能な分割ナット装置と、を含むことを特徴とする成形機。     With the base
    A fixed die plate that is fixed on the base and holds a fixed mold,
    A movable die plate that is provided on the base so as to be movable in the mold opening / closing direction and holds the movable mold facing the fixed mold, and
    A toggle mechanism that can fasten the fixed mold and the movable mold,
    A link housing provided on the base so as to be movable in the opening / closing direction of the mold and to which one end of the link of the toggle mechanism is fixed.
    The drive device that drives the toggle mechanism and
    A first tie bar that can be fixed to the fixed die plate at one end, extends in the opening / closing direction of the mold, and has an engaged portion at the other end.
    A second tie bar that can be fixed to the fixed die plate at one end, extends in the opening / closing direction of the mold, and has an engaged portion at the other end.
    A third tie bar that can be fixed to the fixed die plate at one end, extends in the opening / closing direction of the mold, and has an engaged portion at the other end.
    A fourth tie bar that can be fixed to the fixed die plate at one end, extends in the opening / closing direction of the mold, and has an engaged portion at the other end.
    A first adjusting mechanism for adjusting the fixed position of the other end of the first tie bar, and
    A second adjusting mechanism that adjusts the fixed position of the other end of the second tie bar, and
    A third adjusting mechanism that adjusts the fixed position of the other end of the third tie bar, and
    A fourth adjusting mechanism for adjusting the fixed position of the other end of the fourth tie bar, and
    An injection device for filling the molten metal into the cavity formed by the fixed mold and the movable mold, and
    Equipped with
    Each of the first adjusting mechanism, the second adjusting mechanism, the third adjusting mechanism, and the fourth adjusting mechanism
    The motor fixed to the link housing and
    A ring gear that is driven by the motor and can rotate around the tie bar in an annular shape that surrounds the tie bar.
    A molding machine comprising a split nut device that can be moved in the mold opening / closing direction by rotation of the ring gear and can fix the engaged portion.
  2. 　前記第１の調整機構、前記第２の調整機構、前記第３の調整機構、及び前記第４の調整機構のそれぞれは、
    　前記電動機の出力軸に同心状に固定されたピニオンを、更に含み、
    　前記被係合部は、第１の凹凸部を有し、
    　前記分割ナット装置は、前記第１の凹凸部に係合可能な第２の凹凸部を有する分割ナットと、前記分割ナットを支持し、前記タイバーを囲む環状で、一部が前記リングギアに囲まれ、前記一部に雄ねじ部を有する支持部材と、を有し、
    　前記リングギアは、外周側に前記ピニオンに噛み合うギア部と、内周側に前記雄ねじ部に噛み合う雌ねじ部と、を有することを特徴とする請求項１記載の成形機。     Each of the first adjusting mechanism, the second adjusting mechanism, the third adjusting mechanism, and the fourth adjusting mechanism
    Further including pinions concentrically fixed to the output shaft of the motor.
    The engaged portion has a first uneven portion and has a first uneven portion.
    The split nut device supports a split nut having a second uneven portion that can be engaged with the first uneven portion, and an annular shape that supports the split nut and surrounds the tie bar, and is partially surrounded by the ring gear. It has a support member having a male screw portion in a part thereof, and has a support member.
    The molding machine according to claim 1, wherein the ring gear has a gear portion that meshes with the pinion on the outer peripheral side and a female screw portion that meshes with the male screw portion on the inner peripheral side.
  3. 　前記第２の凹凸部のピッチは前記雌ねじ部のピッチよりも大きく、前記第２の凹凸部の前記型開閉方向の長さは前記雌ねじ部の前記型開閉方向の長さよりも小さいことを特徴とする請求項２記載の成形機。 The pitch of the second uneven portion is larger than the pitch of the female screw portion, and the length of the second uneven portion in the mold opening / closing direction is smaller than the length of the female screw portion in the mold opening / closing direction. The molding machine according to claim 2.
  4. 　前記第２の凹凸部の高さは前記雌ねじ部の高さよりも大きいことを特徴とする請求項３記載の成形機。 The molding machine according to claim 3, wherein the height of the second uneven portion is larger than the height of the female screw portion.
  5. 　前記リングギアの前記型開閉方向に垂直な方向の厚さは、前記型開閉方向に前記リンクハウジングに向かって連続的に薄くなることを特徴とする請求項２ないし請求項４いずれか一項記載の成形機。 The invention according to any one of claims 2 to 4, wherein the thickness of the ring gear in the direction perpendicular to the mold opening / closing direction is continuously thinned toward the link housing in the mold opening / closing direction. Molding machine.
  6. 　前記第１の調整機構、前記第２の調整機構、前記第３の調整機構、及び前記第４の調整機構を独立に制御する制御装置を、更に備えることを特徴とする請求項１ないし請求項５いずれか一項記載の成形機。 Claims 1 to claim further include a first adjusting mechanism, a second adjusting mechanism, a third adjusting mechanism, and a control device for independently controlling the fourth adjusting mechanism. 5 The molding machine according to any one of the above.
  7. 　前記第１のタイバーに加わる応力を測定する第１の測定器と、
    　前記第２のタイバーに加わる応力を測定する第２の測定器と、
    　前記第３のタイバーに加わる応力を測定する第３の測定器と、
    　前記第４のタイバーに加わる応力を測定する第４の測定器と、
    を更に備え、
    　前記制御装置は、第１の成形動作の際に得られた前記第１の測定器、前記第２の測定器、前記第３の測定器、及び前記第４の測定器の測定結果に基づき、前記第１の成形動作に続く第２の成形動作の前に、前記第１の調整機構、前記第２の調整機構、前記第３の調整機構、及び前記第４の調整機構を制御することを特徴とする請求項６記載の成形機。     The first measuring instrument for measuring the stress applied to the first tie bar, and
    A second measuring instrument for measuring the stress applied to the second tie bar, and
    A third measuring instrument that measures the stress applied to the third tie bar, and
    A fourth measuring instrument for measuring the stress applied to the fourth tie bar, and
    Further prepare
    The control device is based on the measurement results of the first measuring instrument, the second measuring instrument, the third measuring instrument, and the fourth measuring instrument obtained in the first molding operation. Before the second molding operation following the first molding operation, the first adjusting mechanism, the second adjusting mechanism, the third adjusting mechanism, and the fourth adjusting mechanism are controlled. The molding machine according to claim 6, which is characterized.
  8. 　前記制御装置は、前記第１の成形動作の際に得られた前記第１の測定器、前記第２の測定器、前記第３の測定器、及び前記第４の測定器の前記測定結果に基づき、
    　前記第１の成形動作に続く前記第２の成形動作の前に、前記第１のタイバー、前記第２のタイバー、前記第３のタイバー、及び前記第４のタイバーに加わる応力の差分が、前記第１の成形動作の際の応力の差分よりも小さくなるように、前記第１の調整機構、前記第２の調整機構、前記第３の調整機構、及び前記第４の調整機構を制御することを特徴とする請求項７記載の成形機。
     
          The control device is based on the measurement results of the first measuring instrument, the second measuring instrument, the third measuring instrument, and the fourth measuring instrument obtained in the first molding operation. Based on
    Prior to the second molding operation following the first molding operation, the difference in stress applied to the first tie bar, the second tie bar, the third tie bar, and the fourth tie bar is the difference between the stresses applied to the first tie bar, the second tie bar, and the fourth tie bar. Controlling the first adjusting mechanism, the second adjusting mechanism, the third adjusting mechanism, and the fourth adjusting mechanism so as to be smaller than the difference in stress during the first molding operation. 7. The molding machine according to claim 7.
PCT/JP2021/047729 2020-12-25 2021-12-22 Molding machine WO2022138776A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016107306A (en) * 2014-12-08 2016-06-20 東芝機械株式会社 Clamping device and forming device
JP2017006931A (en) * 2015-06-17 2017-01-12 ダイハツ工業株式会社 Mold clamping device and molding machine
JP2018140610A (en) * 2017-02-28 2018-09-13 住友重機械工業株式会社 Injection molding machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016107306A (en) * 2014-12-08 2016-06-20 東芝機械株式会社 Clamping device and forming device
JP2017006931A (en) * 2015-06-17 2017-01-12 ダイハツ工業株式会社 Mold clamping device and molding machine
JP2018140610A (en) * 2017-02-28 2018-09-13 住友重機械工業株式会社 Injection molding machine

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