WO2023013654A1 - 全電動中子駆動装置及び成形機 - Google Patents
全電動中子駆動装置及び成形機 Download PDFInfo
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- WO2023013654A1 WO2023013654A1 PCT/JP2022/029701 JP2022029701W WO2023013654A1 WO 2023013654 A1 WO2023013654 A1 WO 2023013654A1 JP 2022029701 W JP2022029701 W JP 2022029701W WO 2023013654 A1 WO2023013654 A1 WO 2023013654A1
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- WIPO (PCT)
- Prior art keywords
- mold
- rod
- fixed
- cylinder tube
- electric core
- Prior art date
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/24—Accessories for locating and holding cores or inserts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/32—Controlling equipment
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- 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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
Definitions
- the present invention relates to an all-electric core driving device and a molding machine used when manufacturing a product using a mold having a core.
- a die casting machine which is an example of a molding machine, uses an injection device to fill a cavity (cavity) in a mold clamped by a mold clamping device with molten metal (molten material) to produce a product (die casting). products). If the product has a shape (undercut) that does not come out parallel to the opening and closing direction of the mold, a mold with a core is used in addition to the fixed mold and the movable mold.
- Patent Document 1 when the core is pulled out from the product, the force necessary for pulling out is exerted by the action of the inclined pin, and once the core moves, it is pulled out at a high speed by the action of the hydraulic cylinder for pulling out the core.
- a core drive is described which is capable of.
- the hydraulic circuit of the mold clamping device of the die casting machine and the core driving device are shared.
- the opening and closing operations of the fixed mold and the movable mold cannot be performed simultaneously with the operation of the core, making it difficult to shorten the cycle time of the die casting machine.
- the problem to be solved by the present invention is to provide an all-electric core drive device and a molding machine that can realize energy saving, miniaturization, suppression of deterioration of the working environment due to oil contamination, and shortening of the cycle time.
- An all-electric core driving device includes a cylinder tube, a first cover member fixed to one end of the cylinder tube, and a second cover member fixed to the other end of the cylinder tube. , at least a part of which is provided in the cylinder tube, has a connection part capable of connecting to one end of a core having a first inclined member or a first inclined recess, and penetrates through the first cover member. , a rod that can move linearly with respect to the cylinder tube, a nut fixed to the rod, the second cover member and the nut, and inserted into the rod to rotate. and a motor for rotating the screw shaft.
- the all-electric core driving device of the above aspect preferably further includes the core connected to the connecting portion and having the first inclined member or the first inclined recess.
- the all-electric core driving device of the aspect described above further includes an elastic body, the rod having an annular flange provided closer to the second cover member than the connecting portion, and the elastic body: It is preferably provided in the cylinder tube between the flange and the first cover member.
- the all-electric core driving device of the above aspect further includes an elastic body and a support section, the support section is fixed to a portion of the rod outside the cylinder tube, and the elastic body is connected to the support section. It is preferably positionable between the part and the movable mold.
- the all-electric core driving device of the above aspect further comprising a control unit for controlling the motor,
- the control unit drives the motor to apply torque to the screw shaft to move the rod in a direction projecting from the first cover member, and the control unit fixes the first tilt member. Movement of the rod at a position where the second inclined recess provided in the mold can be engaged, or where the first inclined recess can be engaged with a second inclined member provided on the fixed mold. stop the After stopping the movement of the rod, after part of the first slanted member is inserted into the second slanted recess, or after part of the second slanted member is inserted into the second It is preferable to release the torque applied to the screw shaft after it is inserted into one inclined recess.
- a molding machine includes a base, a core having a first inclined member or a first inclined recess, a second inclined recess engageable with the first inclined member, or the a fixed mold having a second inclined member engageable with the first inclined recess; a movable mold; a fixed die plate fixed on the base and holding the fixed mold; A movable die plate provided on the top to be movable in the mold opening/closing direction and holding the movable mold in opposition to the fixed mold; A cavity formed by a child driving device, a mold clamping device for clamping the fixed mold and the movable mold, and the fixed mold, the movable mold and the core is filled with a molten material.
- the all-electric core driving device includes a cylinder tube, a first cover member fixed to one end of the cylinder tube, and a second cover fixed to the other end of the cylinder tube.
- a member, at least a portion of which is provided in the cylinder tube, has a connecting portion that can connect the core to one end, penetrates the first cover member, and is linearly movable with respect to the cylinder tube; a flexible rod, a nut fixed to the rod, a threaded shaft penetrating the second cover member and the nut and insertable into the rod and capable of rotational movement, the threaded shaft and a motor that rotates the
- the all-electric core driving device further includes the core connected to the connecting portion and having the first inclined member or the first inclined recess.
- the all-electric core driving device further includes an elastic body
- the rod has an annular flange provided closer to the second cover member than the connecting portion, and the elastic body is installed in the cylinder tube between the flange and the first cover member. It is preferably provided between
- the all-electric core driving device further includes an elastic body and a support section, the support section is fixed to a portion of the rod outside the cylinder tube, and the elastic body is fixed to the rod.
- a body is preferably arranged between the support and the movable mold.
- the all-electric core driving device further includes a control section for controlling the motor, and the control section drives the motor to apply torque to the screw shaft to thereby move the rod.
- the control unit moves the position where the first inclined member can be engaged with the second inclined recess, or the first inclined recess is engaged with the The movement of the rod is stopped at a position where the rod can be engaged with the second inclined member, and after the movement of the rod is stopped, the part of the first inclined member is positioned in the second inclined recess. or after a portion of the second slanted member is inserted into the first slanted recess, the torque applied to the screw shaft is preferably released.
- the present invention it is possible to provide an all-electric core drive device and a molding machine that can realize energy saving, miniaturization, suppression of work environment deterioration due to oil contamination, and shortening of cycle time.
- FIG. 1 is a schematic diagram of an all-electric core driving device according to a first embodiment
- FIG. 1 is a schematic diagram of an all-electric core driving device according to a first embodiment
- FIG. 1 is a schematic cross-sectional view of an all-electric core driving device according to a first embodiment
- FIG. 1 is a schematic cross-sectional view of an all-electric core driving device according to a first embodiment
- movement of the all-electric core drive of 1st Embodiment The figure which shows the state which fixed the all-electric core drive of 1st Embodiment to the metal mold
- FIG. 5 is a schematic cross-sectional view of an all-electric core driving device according to a second embodiment; Explanatory drawing of the operation
- hydraulic pressure will be used as an example of hydraulic pressure.
- a hydraulic circuit will be used as an example of the hydraulic circuit.
- hydraulic pressure it is also possible to use, for example, water pressure.
- description will be made using hydraulic oil as an example of the hydraulic fluid.
- the all-electric core driving device of the first embodiment includes a cylinder tube, a first cover member fixed to one end of the cylinder tube, a second cover member fixed to the other end of the cylinder tube, and at least A part is provided in the cylinder tube, has a connection part that can connect to one end of the core having the first inclined member or the first inclined recess, penetrates the first cover member, and connects to the cylinder tube a rod capable of linear motion relative to the rod, a nut fixed to the rod, a screw shaft penetrating through the second cover member and the nut, provided to be insertable into the rod and capable of rotational movement, and a screw shaft and a motor that rotates the
- the molding machine of the first embodiment includes a base, a core having a first inclined member or a first inclined recess, a second inclined recess engageable with the first inclined member, or a stationary die having a second angled member engageable with the first angled recess; a movable die; a stationary die plate fixed on a base and holding the stationary die; and a die on the base.
- a movable die plate which is provided movably in the opening/closing direction and holds the movable mold facing the fixed mold, an all-electric core driving device which drives the core and is fixed to the movable die plate, and a fixed metal.
- the all-electric core driving device includes a cylinder tube, a first cover member fixed to one end of the cylinder tube, a second cover member fixed to the other end of the cylinder tube, and at least a portion of the cylinder.
- a rod provided in the tube having a connection part capable of connecting a core to one end thereof, passing through the first cover member and capable of linear movement with respect to the cylinder tube; and a nut fixed to the rod.
- a second cover member and a nut a screw shaft inserted into the rod and capable of rotating, and a motor for rotating the screw shaft.
- FIG. 1 is a schematic diagram showing the overall configuration of the molding machine of the first embodiment.
- FIG. 1 is a side view partially including a cross-sectional view.
- a molding machine of the first embodiment is a die casting machine 1000 .
- the die casting machine 1000 is a cold chamber type die casting machine.
- a die casting machine 1000 includes a fixed mold 10, a movable mold 12, a core 14, a mold clamping device 16, an extrusion device 18, an injection device 20, a control device 22, a hydraulic circuit 24, and an all-electric core driving device 100.
- the die casting machine 1000 comprises a base 26 , a fixed die plate 28 , a movable die plate 30 , link housings 32 and tie bars 34 .
- the die casting machine 1000 injects molten metal (molten material), which is a liquid metal, into a mold (cavity Ca in FIG. 1) composed of a fixed mold 10, a movable mold 12, and a core 14. to fill.
- molten metal molten material
- a die-cast product is manufactured by solidifying the molten metal in the mold.
- Metals are, for example, aluminum, aluminum alloys, zinc alloys, or magnesium alloys.
- the mold includes a fixed mold 10, a movable mold 12, and a core 14.
- a mold is provided between the mold clamping device 16 and the injection device 20 .
- the core 14 is combined with the fixed mold 10 and the movable mold 12 .
- a fixed die plate 28 is fixed on the base 26 .
- a stationary die plate 28 can hold the stationary die 10 .
- the movable die plate 30 is provided on the base 26 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.
- the movable die plate 30 can hold the movable mold 12 facing the fixed mold 10 .
- the link housing 32 is provided on the base 26. One end of a link mechanism that constitutes the mold clamping device 16 is fixed to the link housing 32 .
- the fixed die plate 28 and the link housing 32 are fixed by tie bars 34.
- the tie bars 34 support the mold clamping force while the mold clamping force is applied to the fixed mold 10 and the movable mold 12 .
- the mold clamping device 16 has the function of opening and closing the mold and clamping the mold.
- the injection device 20 has a function of injecting the molten metal into the cavity Ca of the mold and pressurizing the molten metal.
- the extruder 18 has a function of extruding the manufactured die-cast product from the mold.
- the all-electric core driving device 100 has a function of inserting the core 14 into the fixed mold 10 or the movable mold 12 and extracting the core 14 from the fixed mold 10 or the movable mold 12 .
- the hydraulic circuit 24 has the function of hydraulically driving the mold clamping device 16, the extrusion device 18, and the injection device 20, for example.
- the control device 22 has a function of controlling the mold clamping device 16, the extrusion device 18, the injection device 20, and the all-electric core driving device 100, for example.
- the control device 22 controls, for example, the mold clamping device 16 and the all-electric core driving device 100 so that the movable mold 12 and the core 14 move simultaneously.
- the control device 22 has a function of performing various calculations and outputting control commands to each part of the die casting machine 1000 .
- the control device 22 has, for example, a function of storing molding conditions and the like.
- the control device 22 is composed of, for example, a combination of hardware and software.
- the control device 22 includes, for example, a CPU (Central Processing Unit), a semiconductor memory, and a control program stored in the semiconductor memory.
- a CPU Central Processing Unit
- FIG. 2 is a schematic diagram of the all-electric core driving device of the first embodiment.
- FIG. 2 is a side view of the all-electric core drive.
- FIG. 3 is a schematic diagram of the all-electric core driving device of the first embodiment.
- FIG. 3(a) is a top view
- FIG. 3(b) is a bottom view.
- the all-electric core driving device 100 of the first embodiment inserts a core into a fixed mold or a movable mold of a die casting machine, and extracts a core from the fixed mold or the movable mold, for example. conduct.
- the all-electric core driving device 100 of the first embodiment is an all-electric all-electric core driving device that is driven using only electric power as an energy source.
- the all-electric core driving device 100 is an actuator that uses electric power as an energy source to achieve reciprocating linear motion.
- FIG. 4 is a schematic cross-sectional view of the all-electric core driving device of the first embodiment.
- FIG. 5 is a schematic cross-sectional view of the all-electric core driving device of the first embodiment. 5(a) shows the AA' section of FIG. 4, and FIG. 5(b) shows the BB' section of FIG.
- the all-electric core driving device 100 of the first embodiment includes a cylinder tube 40, a head cover 42 (first cover member), a cap cover 44 (second cover member), a rod 46, a nut 48, a screw shaft 50, It has a motor 52 , a first pulley 54 , a second pulley 56 , a belt 58 , a screw shaft guide 60 and a controller 62 .
- the rod 46 has a coupling 46a (connecting portion) and a flange 46b.
- the motor 52 has a motor shaft 52a.
- the cylinder tube 40 has, for example, a cylindrical shape.
- the head cover 42 is fixed to one end of the cylinder tube 40 .
- Head cover 42 has an opening through which rod 46 passes.
- the head cover 42 and the cylinder tube 40 may be integrally molded, for example.
- the cap cover 44 is fixed to the other end of the cylinder tube 40.
- the cap cover 44 is provided at the end of the cylinder tube 40 opposite to the head cover 42 .
- the cap cover 44 has an opening through which the screw shaft 50 passes.
- the cap cover 44 and the cylinder tube 40 may be integrally molded, for example.
- Rod 46 has a coupling 46a to which a core having a tilt pin at one end can be connected.
- a fixing jig capable of fixing a core to the tip can be screwed to the coupling 46a.
- the rod 46 has a flange 46b closer to the cap cover 44 than the coupling 46a.
- the rod 46 has, for example, a flange 46b at the end on the cap cover 44 side.
- the flange 46b is annular.
- the flange 46b is, for example, annular.
- the rod 46 passes through the head cover 42.
- Rod 46 is slidable relative to head cover 42 .
- At least part of the rod 46 is cylindrical.
- at least a portion of rod 46 is cylindrical.
- the rod 46 can move linearly with respect to the cylinder tube 40 .
- a nut 48 is fixed to the rod 46 .
- the nut 48 is fixed, for example, to the end of the rod 46 on the cap cover 44 side.
- the screw shaft 50 passes through the cap cover 44 and the nut 48.
- the threaded shaft 50 is provided to be insertable into the rod 46 .
- the screw shaft 50 is rotatable.
- the screw shaft 50 is fitted with the nut 48.
- the screw shaft 50 and the nut 48 constitute, for example, a ball screw. Balls are provided between the screw shaft 50 and the nut 48 to reduce the frictional resistance between the screw shaft 50 and the nut 48 .
- the screw shaft guide 60 is provided between the cap cover 44 and the screw shaft 50.
- the screw shaft guide 60 supports the screw shaft 50 in a rotatable state.
- the screw shaft guide 60 is, for example, a ball bearing.
- the motor 52 is fixed to the cap cover 44, for example.
- a motor 52 rotates the screw shaft 50 .
- Motor 52 is a power source for rotating screw shaft 50 .
- the motor 52 is, for example, a servomotor.
- the motor 52 is capable of torque control to keep the torque of the motor 52 constant, for example.
- Motor 52 is capable of speed control, for example, to keep the speed of rod 46 constant.
- a first pulley 54 is fixed to the end of the screw shaft 50 .
- a second pulley 56 is fixed to the motor shaft 52 a of the motor 52 .
- a belt 58 connects the first pulley 54 and the second pulley 56 .
- the rotation of the motor 52 is transmitted to the screw shaft 50 using the first pulley 54, the second pulley 56, and the belt 58, and the screw shaft 50 rotates.
- the ratio between the diameter of the first pulley 54 and the diameter of the second pulley 56 is determined so that the number of rotations of the screw shaft 50 becomes a desired number of rotations. Torque is applied to the screw shaft 50 from the motor 52 using the first pulley 54 , the second pulley 56 and the belt 58 .
- the control unit 62 controls the motor 52.
- the control unit 62 is, for example, a control circuit.
- the control unit 62 is configured by, for example, a combination of hardware and software.
- the control unit 62 includes, for example, an encoder and a servo amplifier.
- the control unit 62 has a function of driving the motor 52 and applying torque to the screw shaft 50 to move the rod 46 in the direction of protruding from the head cover 42 . Further, the control unit 62 has a function of stopping the movement of the rod 46 at a position where the inclined pin of the core 14 can engage with the inclined concave portion of the fixed mold 10 of the fixed mold 10 . The control unit 62 also has a function of canceling the torque applied to the screw shaft 50 after the movement of the rod 46 is stopped and the tilt pin is partially inserted into the tilt recess.
- FIG. 4 shows the state where the rod 46 is at the retraction limit position. That is, FIG. 4 shows the case where the rod 46 is at the position closest to the cap cover 44. As shown in FIG.
- FIG. 6 is an explanatory diagram of the operation of the all-electric core driving device of the first embodiment.
- the rotational motion of the screw shaft 50 is converted into linear motion of the rod 46 fixed to the nut 48 .
- the rod 46 advances toward the head cover 42 side.
- FIG. 7 and 8 are diagrams showing the state in which the all-electric core driving device of the first embodiment is fixed to the mold.
- FIG. 7 is a diagram showing a state in which the mold is open.
- FIG. 8 is a diagram showing a state in which the mold is closed. 7 and 8 show part of the mold.
- the mold includes a fixed mold 10, a movable mold 12, and a core 14.
- the core 14 is fixed to the all-electric core drive 100 .
- a fixing jig 66 to which the core 14 is fixed is screwed to the coupling 46a.
- Core 14 and fixture 66 may also be considered part of all-electric core drive 100 .
- the all-electric core driving device 100 is fixed to the movable mold 12 by a fixing base 64, for example.
- the core 14 is provided with an inclined pin 14x (first inclined member).
- the fixed mold 10 is provided with an inclined hole 10y (second inclined recess) into which the inclined pin 14x can be inserted.
- An angle ( ⁇ in FIG. 7) between the extending direction of the inclined pin 14x and the horizontal plane is, for example, 5 degrees or more and 30 degrees or less.
- the core 14 is incorporated between the fixed mold 10 and the movable mold 12 when the mold is closed.
- the inclined pin 14x of the core 14 is completely inserted into the inclined hole 10y of the fixed mold 10, and the core 14 is fixed to the fixed mold 10.
- the core 14 When the mold is closed, the core 14 is fixed to the fixed mold 10 by the inclined pin 14x.
- the inclined pin 14x prevents the core 14 from being pushed out by the pressure (metal pressure) of the molten metal filling the cavity in the mold.
- FIG. 9 is an explanatory diagram showing the operation of the molding machine of the first embodiment.
- the molding operation of the die casting machine 1000 has multiple partial operations from the start to the end of the molding operation.
- the partial operations include "core entry”, “mold clamping”, “pouring”, “injection”, “cooling”, “mold opening”, “core return”, and “extrusion”. ', 'take out'.
- 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 20 are explanatory diagrams of the operation of the molding machine of the first embodiment. 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 20 particularly show the fixed mold 10, the movable mold 12, and the core. 14 operations are shown.
- the fixed mold 10 and the movable mold 12 are in an open state.
- the core 14 is pulled out from the fixed mold 10 and the movable mold 12 .
- “Inserting the core” is the action of inserting the core 14 into the movable mold 12 using the all-electric core driving device 100.
- “Mold clamping” is an operation of closing the fixed mold 10 and the movable mold 12 in the mold closing direction and tightening the fixed mold 10 and the movable mold 12 using the mold clamping device 16 .
- the mold clamping device 16 is used to move the movable mold 12 to close the fixed mold 10 and the movable mold 12 in the mold closing direction. Simultaneously with this operation, an operation of inserting the core 14 into the movable mold 12 is performed using the all-electric core driving device 100 .
- the core 14 is inserted by driving the motor 52 of the all-electric core driving device 100 to move the rod 46 forward.
- the control unit 62 drives the motor 52 to apply torque to the screw shaft 50 to move the rod 46 in the direction of protruding from the head cover 42 .
- the all-electric core driving device 100 is stopped.
- the control unit 62 controls the motor 52 to stop the movement of the rod 46 at a predetermined position.
- the predetermined position is a vertical position where the inclined pin 14x of the core 14 can engage with the inclined hole 10y provided in the fixed mold 10 .
- the control unit 62 controls the motor 52 so that the vertical position of the core 14 is maintained at a predetermined position. After that, the movement of the movable mold 12 in the mold closing direction continues.
- the control unit 62 releases the torque applied to the screw shaft 50 by the motor 52. do.
- the screw shaft 50 is placed in a so-called torque-free state.
- the core 14 is held in its vertical position by a portion of the inclined pin 14x being supported by the inclined hole 10y.
- “Pouring” is the action of supplying liquid metal (molten metal) to the injection sleeve of the injection device 20 using a hot water supply device (not shown).
- injection is the operation of injecting molten metal into a mold using the injection device 20. As shown in FIG. 15, the cavity Ca surrounded by the fixed mold 10, the movable mold 12, and the core 14 is filled with the molten metal 68. As shown in FIG.
- the pressure of the molten metal 68 (metal pressure) is applied in the direction of pushing out the core 14. Insertion of the inclined pin 14x into the inclined hole 10y prevents the core 14 from being pushed out.
- Cooling is the operation of cooling the molten metal 68 inside the mold to manufacture a die cast product. As shown in FIG. 16, the molten metal 68 inside the mold is cooled to form a die cast product 70 .
- Mold opening is an operation to open the fixed mold 10 and the movable mold 12 in the mold opening direction using the mold clamping device 16.
- “Returning the core” is an action of pulling out the core 14 from the movable mold 12 .
- the mold clamping device 16 is used to move the movable mold 12 in the mold opening direction, thereby separating the die cast product 70 from the fixed mold 10 .
- the core 14 also moves upward, and the die cast product 70 separates from the core 14.
- the controller 62 drives the motor 52 to apply torque to the screw shaft 50.
- the rod 46 retracts, and the core 14 moves upward, that is, in the direction in which it is pulled out of the movable mold 12 .
- the driving of the motor 52 of the all-electric core driving device 100 is stopped.
- the controller 62 stops driving the motor 52 when the rod 46 reaches the maximum retraction position.
- the mold clamping device 16 is stopped when the movable mold 12 has moved to a predetermined position.
- Extrusion is an operation of using the extrusion device 18 to push out the die cast product 70 from the mold and release it from the mold. As shown in FIG. 19, the die cast product 70 is separated from the movable mold 12. As shown in FIG.
- Removing is an operation of removing the die cast product 70 extruded from the mold by, for example, a robot arm. As shown in FIG. 20, the die cast product 70 is removed from the mold by, for example, a robot arm (not shown). After “take out,” for example, return to “mold closing,” to produce the next die cast article 70 .
- a core driving device for inserting the core into the fixed mold or movable mold and pulling out the core from the fixed mold or movable mold be provided.
- the pressure of the molten metal (metal pressure) is applied in the direction of pushing out the core. Therefore, a mechanism is required to prevent the core from being pushed out of the mold. Further, when pulling out the core from the mold, a large driving force is required for the core driving device in order to separate the core from the product.
- the all-electric core driving device 100 of the first embodiment uses the core 14 with the inclined pin 14x.
- the core 14 is prevented from being pushed out of the mold by inserting the inclined pin 14x into the inclined hole 10y.
- the all-electric core driving device 100 is not required to have a large driving force, and the all-electric core driving device 100 can be downsized or energy-saving.
- the all-electric core driving device 100 is entirely driven by electric power, so that the all-electric core driving device 100 and the die casting machine 1000 can save energy compared to, for example, a case where a hydraulic circuit is used for driving. It is possible.
- the all-electric core driving device 100 can be downsized by driving the all-electric core driving device 100 entirely with electric power.
- the all-electric core driving device 100 is driven using a dedicated motor 52 for the all-electric core driving device 100 . Therefore, it is possible to insert the core into the fixed mold or the movable mold and pull out the core from the fixed mold or the movable mold at the same time as opening and closing the fixed mold and the movable mold. Become. Therefore, the cycle time of the die casting machine 1000 using the all-electric core driving device 100 can be shortened. That is, it is possible to shorten the cycle time of manufacturing products by the die casting machine 1000 using the all-electric core driving device 100 .
- the motor 52 is preferably a servomotor.
- a variation of the all-electric core drive and molding machine of the first embodiment is that the core has a first slanted recess and the fixed mold has a second slant engageable with the first slanted recess. It differs from the all-electric core driving device and molding machine of the first embodiment in that it has members.
- FIGS. 21 and 22 are diagrams showing a state in which a modification of the all-electric core driving device of the first embodiment is fixed to a mold.
- FIG. 21 is a diagram showing a state in which the mold is open.
- FIG. 22 is a diagram showing a state in which the mold is closed. Figures 21 and 22 show a portion of the mold.
- the core 14 of Modification 101 is provided with an inclined hole 14y (first inclined recess).
- the stationary mold 10 is provided with an inclined pin 10x (second inclined member) that can be inserted into the inclined hole 14y.
- the core 14 is incorporated between the fixed mold 10 and the movable mold 12 when the mold is closed.
- the inclined pin 10x of the fixed mold 10 is completely inserted into the inclined hole 14y of the core 14, and the core 14 is fixed to the fixed mold 10.
- the core has an inclined pin or an inclined hole and is fully electric. It is possible to realize an all-electric core driving device and a molding machine that can shorten the cycle time.
- the all-electric core driving device of the second embodiment further includes an elastic body, the rod has an annular flange provided closer to the second cover member than the connecting portion, and the elastic body is a cylinder. It differs from the all-electric core driving device of the first embodiment in that it is provided in the tube between the flange and the first cover member. Further, the molding machine of the second embodiment differs from the molding machine of the first embodiment in that it includes the all-electric core driving device. In the following, a part of description may be omitted for contents that overlap with the first embodiment.
- FIG. 23 is a schematic cross-sectional view of the all-electric core driving device of the second embodiment.
- the all-electric core driving device 200 of the second embodiment includes a cylinder tube 40, a head cover 42 (first cover member), a cap cover 44 (second cover member), a rod 46, a nut 48, a screw shaft 50, It has a motor 52 , a first pulley 54 , a second pulley 56 , a belt 58 , a screw shaft guide 60 , a control section 62 and an elastic body 72 .
- the elastic body 72 is provided inside the cylinder tube 40 .
- the elastic body 72 is provided between the flange 46b of the rod 46 and the head cover 42 (first cover member).
- An elastic body 72 is provided between the rod 46 and the cylinder tube 40 .
- An elastic body 72 is provided around the rod 46 .
- the elastic body 72 is, for example, a coil spring.
- FIG. 24 is an explanatory diagram of the operation of the all-electric core driving device of the second embodiment.
- the rotational motion of the screw shaft 50 is converted into linear motion of the rod 46 fixed to the nut 48 .
- the rod 46 advances toward the head cover 42 side.
- the restoring force of the elastic body 72 that has been compressed also acts as a force to move the core 14 upward. work.
- the frictional force between the tilt pin 14x and the tilt hole 10y is reduced.
- the stress applied to the tilt pin 14x is reduced. Therefore, the component life of the inclined pin 14x is extended, and the reliability of the all-electric core driving device 200 and the die casting machine 1000 is improved.
- the core has an inclined pin or an inclined hole and is fully electric, thereby saving energy, reducing the size, and reducing the working environment due to oil contamination. It is possible to realize an all-electric core driving device and a molding machine that can suppress deterioration and shorten the cycle time. In addition, by providing the elastic body, it is possible to realize an all-electric core driving device and a molding machine with a longer component life and improved reliability.
- the all-electric core driving device of the third embodiment further comprises an elastic body and a support part, the support part is fixed to a part of the rod outside the cylinder tube, and the elastic body is connected to the support part. It differs from the all-electric core driving device of the first embodiment in that it can be arranged between the movable mold. Further, the molding machine of the third embodiment differs from the molding machine of the first embodiment in that it includes the all-electric core driving device. In the following, a part of description may be omitted for contents that overlap with the first embodiment.
- FIG. 25 and 26 are diagrams showing a state in which the all-electric core driving device of the third embodiment is fixed to the mold.
- FIG. 25 is a diagram showing a state in which the mold is open.
- FIG. 26 is a diagram showing a state in which the mold is closed. 25 and 26 show part of the mold.
- the all-electric core drive device 300 of the third embodiment has an elastic body 72 and a support portion 74 .
- the mold includes a fixed mold 10, a movable mold 12, and a core 14.
- the core 14 is fixed to the all-electric core drive 300 .
- a fixing jig 66 to which the core 14 is fixed is screwed to the coupling 46a.
- Core 14 and fixture 66 may also be considered part of all-electric core drive 300 .
- the all-electric core driving device 300 is fixed to, for example, the movable mold 12 by the fixing base 64 .
- the support part 74 is fixed to a part of the rod 46 outside the cylinder tube 40 .
- the support portion 74 is fixed to the coupling 46a, for example.
- the elastic body 72 can be arranged between the support portion 74 and the movable mold 12 .
- the elastic body 72 is arranged between the support portion 74 and the movable mold 12 .
- the elastic body 72 is, for example, a coil spring.
- the elastic body 72 is compressed in the extension direction of the rod 46 when the mold is closed.
- the restoring force of the elastic body 72 that has been compressed also acts as a force to move the core 14 upward. work.
- the frictional force between the tilt pin 14x and the tilt hole 10y is reduced.
- the stress applied to the tilt pin 14x is reduced. Therefore, the component life of the inclined pin 14x is extended, and the reliability of the all-electric core driving device 300 and the die casting machine 1000 is improved.
- the core has an inclined pin or an inclined hole and is fully electric. It is possible to realize an all-electric core driving device and a molding machine that can suppress deterioration and shorten the cycle time. In addition, it is possible to realize an all-electric core driving device and a molding machine that have a longer component life and improved reliability.
- motor 52 is a servo motor in the first to third embodiments, the motor 52 is not limited to a servo motor.
- motor 52 may be an AC motor.
- a first pulley 54, a second pulley 56, and a belt 58 are used as a transmission mechanism for transmitting the rotation of the motor 52 to the screw shaft 50.
- the transmission mechanism is not limited to this configuration.
- the rotation of the motor 52 may be directly transmitted to the screw shaft 50 .
- a combination of a plurality of gears may be used as the transmission mechanism.
- the shape of the first slant member or the second slant member was pin-shaped, but the shape of the first slant member or the second slant member is not limited to a pin shape.
- the shape of the first inclined member or the second inclined member may be block-shaped, for example.
- the molding machine is a die casting machine
- the molding machine may be, for example, an injection molding machine that manufactures plastic products.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
前記制御部は、前記モータを駆動して前記ねじ軸にトルクを加えることで前記ロッドを前記第1のカバー部材から突出する方向に移動させ、前記制御部は、前記第1の傾斜部材が固定金型に設けられた第2の傾斜凹部と係合可能な位置、又は、前記第1の傾斜凹部が固定金型に設けられた第2の傾斜部材と係合可能な位置で前記ロッドの移動を停止し、
前記制御部は、前記ロッドの移動を停止した後、前記第1の傾斜部材の一部が前記第2の傾斜凹部に挿入された後、又は、前記第2の傾斜部材の一部が前記第1の傾斜凹部に挿入された後、前記ねじ軸に加えられていたトルクを解除することが好ましい。
前記ロッドは、前記連結部よりも前記第2のカバー部材の側に設けられた環状のフランジを有し、前記弾性体は、前記シリンダチューブの中に、前記フランジと前記第1のカバー部材との間に設けられることが好ましい。
第1の実施形態の全電動中子駆動装置は、シリンダチューブと、シリンダチューブの一端に固定された第1のカバー部材と、シリンダチューブの他端に固定された第2のカバー部材と、少なくとも一部がシリンダチューブの中に設けられ、第1の傾斜部材又は第1の傾斜凹部を有する中子を一端に連結可能な連結部を有し、第1のカバー部材を貫通し、シリンダチューブに対して直進運動が可能なロッドと、ロッドに固定されたナットと、第2のカバー部材及びナットを貫通し、ロッドの中に挿入可能に設けられ、回転運動が可能なねじ軸と、ねじ軸を回転させるモータと、を備える。
第1の実施形態の全電動中子駆動装置及び成形機の変形例は、中子が第1の傾斜凹部を有し、固定金型が第1の傾斜凹部と係合可能な第2の傾斜部材を有する点で、第1の実施形態の全電動中子駆動装置及び成形機と異なる。
第2の実施形態の全電動中子駆動装置は、弾性体を更に備え、ロッドは、連結部よりも第2のカバー部材の側に設けられた環状のフランジを有し、弾性体は、シリンダチューブの中に、フランジと第1のカバー部材との間に設けられる点で、第1の実施形態の全電動中子駆動装置と異なる。また、第2の実施形態の成形機は、上記全電動中子駆動装置を備える点で、第1の実施形態の成形機と異なる。以下、第1の実施形態と重複する内容については、一部記述を省略する場合がある。
第3の実施形態の全電動中子駆動装置は、弾性体と、支持部と、を更に備え、支持部は、シリンダチューブの外のロッドの一部に固定され、弾性体は、支持部と可動金型との間に配置可能である点で、第1の実施形態の全電動中子駆動装置と異なる。また、第3の実施形態の成形機は、上記全電動中子駆動装置を備える点で、第1の実施形態の成形機と異なる。以下、第1の実施形態と重複する内容については、一部記述を省略する場合がある。
10x 傾斜ピン(第2の傾斜部材)
10y 傾斜孔(第2の傾斜凹部)
12 可動金型
14 中子
14x 傾斜ピン(第1の傾斜部材)
14y 傾斜孔(第1の傾斜凹部)
16 型締装置
18 押出装置
20 射出装置
22 制御装置
24 油圧回路
26 ベース
28 固定ダイプレート
30 可動ダイプレート
32 リンクハウジング
34 タイバー
40 シリンダチューブ
42 ヘッドカバー(第1のカバー部材)
44 キャップカバー(第2のカバー部材)
46 ロッド
46a カップリング(連結部)
46b フランジ
48 ナット
50 ねじ軸
52 モータ
52a モータ軸
54 第1のプーリー
56 第2のプーリー
58 ベルト
60 ねじ軸ガイド
62 制御部
64 固定台
66 固定治具
68 溶湯(溶融材料)
70 ダイカスト品
72 弾性体
74 支持部
100 全電動中子駆動装置
200 全電動中子駆動装置
300 全電動中子駆動装置
1000 ダイカストマシン(成形機)
Ca キャビティ
Claims (10)
- シリンダチューブと、
前記シリンダチューブの一端に固定された第1のカバー部材と、
前記シリンダチューブの他端に固定された第2のカバー部材と、
少なくとも一部が前記シリンダチューブの中に設けられ、第1の傾斜部材又は第1の傾斜凹部を有する中子を一端に連結可能な連結部を有し、前記第1のカバー部材を貫通し、前記シリンダチューブに対して直進運動が可能なロッドと、
前記ロッドに固定されたナットと、
前記第2のカバー部材及び前記ナットを貫通し、前記ロッドの中に挿入可能に設けられ、回転運動が可能なねじ軸と、
前記ねじ軸を回転させるモータと、
を備えることを特徴とする全電動中子駆動装置。 - 前記連結部に連結され、前記第1の傾斜部材又は前記第1の傾斜凹部を有する前記中子を、更に備えることを特徴とする請求項1記載の全電動中子駆動装置。
- 弾性体を更に備え、
前記ロッドは、前記連結部よりも前記第2のカバー部材の側に設けられた環状のフランジを有し、前記弾性体は、前記シリンダチューブの中に、前記フランジと前記第1のカバー部材との間に設けられることを特徴とする請求項1又は請求項2記載の全電動中子駆動装置。 - 弾性体と、支持部と、を更に備え、
前記支持部は、前記シリンダチューブの外の前記ロッドの一部に固定され、前記弾性体は、前記支持部と可動金型との間に配置可能であることを特徴とする請求項1又は請求項2記載の全電動中子駆動装置。 - 前記モータを制御する制御部を、更に備え、
前記制御部は、前記モータを駆動して前記ねじ軸にトルクを加えることで前記ロッドを前記第1のカバー部材から突出する方向に移動させ、
前記制御部は、前記第1の傾斜部材が固定金型に設けられた第2の傾斜凹部と係合可能な位置、又は、前記第1の傾斜凹部が固定金型に設けられた第2の傾斜部材と係合可能な位置で前記ロッドの移動を停止し、
前記制御部は、前記ロッドの移動を停止した後、前記第1の傾斜部材の一部が前記第2の傾斜凹部に挿入された後、又は、前記第2の傾斜部材の一部が前記第1の傾斜凹部に挿入された後、前記ねじ軸に加えられていたトルクを解除することを特徴とする請求項1ないし請求項4いずれか一項記載の全電動中子駆動装置。 - ベースと、
第1の傾斜部材又は第1の傾斜凹部を有する中子と、
前記第1の傾斜部材と係合可能な第2の傾斜凹部、又は、前記第1の傾斜凹部と係合可能な第2の傾斜部材を有する固定金型と、
可動金型と、
前記ベースの上に固定され、前記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、前記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、
前記中子を駆動し、前記可動ダイプレートに固定された全電動中子駆動装置と、
前記固定金型と前記可動金型の型締めを行う型締装置と、
前記固定金型、前記可動金型及び前記中子で形成されるキャビティの中に溶融材料を充填する射出装置と、を備え、
前記全電動中子駆動装置は、
シリンダチューブと、
前記シリンダチューブの一端に固定された第1のカバー部材と、
前記シリンダチューブの他端に固定された第2のカバー部材と、
少なくとも一部が前記シリンダチューブの中に設けられ、前記中子を一端に連結可能な連結部を有し、前記第1のカバー部材を貫通し、前記シリンダチューブに対して直進運動が可能なロッドと、
前記ロッドに固定されたナットと、
前記第2のカバー部材及び前記ナットを貫通し、前記ロッドの中に挿入可能に設けられ、回転運動が可能なねじ軸と、
前記ねじ軸を回転させるモータと、
を備えることを特徴とする成形機。 - 前記全電動中子駆動装置は、前記連結部に連結され、前記第1の傾斜部材又は前記第1の傾斜凹部を有する前記中子を、更に備えることを特徴とする請求項6記載の成形機。
- 前記全電動中子駆動装置は、弾性体を更に備え、
前記ロッドは、前記連結部よりも前記第2のカバー部材の側に設けられた環状のフランジを有し、前記弾性体は、前記シリンダチューブの中に、前記フランジと前記第1のカバー部材との間に設けられることを特徴とする請求項6又は請求項7記載の成形機。 - 前記全電動中子駆動装置は、弾性体と、支持部と、を更に備え、
前記支持部は、前記シリンダチューブの外の前記ロッドの一部に固定され、前記弾性体は、前記支持部と前記可動金型との間に配置されることを特徴とする請求項6又は請求項7記載の成形機。 - 前記全電動中子駆動装置は、前記モータを制御する制御部を、更に備え、
前記制御部は、前記モータを駆動して前記ねじ軸にトルクを加えることで前記ロッドを前記第1のカバー部材から突出する方向に移動させ、
前記制御部は、前記第1の傾斜部材が前記第2の傾斜凹部と係合可能な位置、又は、前記第1の傾斜凹部が前記第2の傾斜部材と係合可能な位置で前記ロッドの移動を停止し、
前記制御部は、前記ロッドの移動を停止した後、前記第1の傾斜部材の一部が前記第2の傾斜凹部に挿入された後、又は、前記第2の傾斜部材の一部が前記第1の傾斜凹部に挿入された後、前記ねじ軸に加えられていたトルクを解除することを特徴とする請求項6ないし請求項9いずれか一項記載の成形機。
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JPH08252843A (ja) * | 1995-03-15 | 1996-10-01 | Sanyo Electric Co Ltd | 射出成形金型 |
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JPH08252843A (ja) * | 1995-03-15 | 1996-10-01 | Sanyo Electric Co Ltd | 射出成形金型 |
JP2021087977A (ja) * | 2019-12-04 | 2021-06-10 | 芝浦機械株式会社 | ハイブリッド式中子駆動装置及び成形機 |
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