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WO2006001325A1 - Appareil de moulage de poinçon et méthode de moulage de poinçon - Google Patents

Appareil de moulage de poinçon et méthode de moulage de poinçon Download PDF

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Publication number
WO2006001325A1
WO2006001325A1 PCT/JP2005/011513 JP2005011513W WO2006001325A1 WO 2006001325 A1 WO2006001325 A1 WO 2006001325A1 JP 2005011513 W JP2005011513 W JP 2005011513W WO 2006001325 A1 WO2006001325 A1 WO 2006001325A1
Authority
WO
WIPO (PCT)
Prior art keywords
molten metal
gas
sleeve
plunger
die casting
Prior art date
Application number
PCT/JP2005/011513
Other languages
English (en)
Japanese (ja)
Inventor
Kiyoshi Fujino
Nagayoshi Matsubara
Hideki Murakami
Takashi Koide
Original Assignee
Fujino Technical Consultant
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 Fujino Technical Consultant filed Critical Fujino Technical Consultant
Publication of WO2006001325A1 publication Critical patent/WO2006001325A1/fr

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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
    • B22D17/30—Accessories for supplying molten metal, e.g. in rations
    • 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

Definitions

  • the present invention relates to a die casting forging apparatus that can fill a mold cavity from below with a molten metal to produce a forged product such as an aluminum alloy, and in particular, to a mold cavity using a gas pressure pouring pot.
  • the present invention relates to a die casting forging apparatus for supplying and filling a downward force and a die force forging method using the same.
  • a die force such as an aluminum alloy has been used to inject molten metal such as a molten aluminum alloy into a mold cavity formed by a fixed mold and a movable mold and cool it to produce a porcelain.
  • molten metal such as a molten aluminum alloy
  • a method of drawing the molten metal held in the molten metal holding furnace by the ladle and pouring the inlet hole force at the upper part of the staking sleeve it was necessary to use a long sleeve that enlarged the inlet hole at the top of the sleeve.
  • the amount of molten metal poured into the squeezing sleeve for one batch is much smaller than the sum of the volume of the staking sleeve and the sump at the tip.
  • the hot air surface is easily oxidized by the large air reservoir in the upper part of the melt, and the contact area with the stagnation sleeve is also increased, resulting in cooling and the formation of a solidified layer.
  • the molten metal surface in the squeeze sleeve undulates and entrains air from the air pool at the top of the molten metal, and the acid film on the molten metal surface also peels off.
  • the solidified layer that was mixed and burned was the resistance to the plunger advance, resulting in a substantial decrease in the penetration force, which was the cause of defective forged products.
  • the inventor has invented a method using an immersion type electromagnetic pump as a means for supplying molten metal to the mold cavity (see Japanese Patent Application Laid-Open No. 2002-108881).
  • the electromagnetic pump was large and the device was large, making it difficult to put it into practical use.
  • it had the same problems as mentioned above, such as the difficulty in refilling the melt.
  • Patent Document 1 Japanese Patent Laid-Open No. 58-55166
  • Patent Document 2 JP 2002-108881
  • An object of the present invention is to fill a mold cavity with molten metal at high speed, and effectively pressurize the molten metal in the blocked cavity so that there is no generation of shrinkage and no entrainment of gas.
  • An object of the present invention is to provide a die casting forging apparatus that can be easily manufactured, has a high work efficiency and is easy to maintain, and has a low equipment cost, and a die casting method using the die casting forging apparatus.
  • the inventors of the present invention diligently studied to solve the above problems, and by using a gas pressurized pouring pan that can be attached to and detached from the main body of the apparatus, work efficiency is high and easy-maintenance and low-cost equipment cost die casting. It can be a forging device, and the gas pressure of such a gas pressurized hot pot It has been found that by increasing the height, the molten metal can be supplied at a high speed, and it is possible to produce a forged product without mixing of an oxide film and gas, and the present invention has been completed.
  • the present invention relates to a fixed mold and a movable mold that can form a mold cavity, a swaging sleeve that is provided on the fixed mold side and communicates with the mold cavity, and a slide in the swivel sleeve.
  • An apparatus main body having a plunger for injecting the molten metal that has been moved and delivered to the mold cavity into the mold cavity, and a downward force applied to the sandwiched sleeve via the molten metal delivery opening formed in the inserted sleeve.
  • a die casting forging apparatus provided with squeezing means for supplying and filling molten metal, wherein the squeezing means has a gas pressurized pouring pot that can be attached to and detached from the apparatus body.
  • a hot pot is included A die cast forging apparatus (3) as set forth in (1) or (2) above, wherein a sealing structure is formed by closely contacting the upper end of the encasing stork to the apparatus body;
  • the die-cast forging apparatus (6) according to any one of (1) to (5) above, wherein the gas pressurized hot water pan is provided with heating means.
  • the present invention is configured such that when the plunger tip of the plunger closes the molten metal delivery opening of the swallow sleeve, the front portion of the plunger tip in the swallow sleeve is filled with the melt.
  • (1) to (6) characterized in that the die force strike forging device (7) described in the above or the die cavity is inserted into the inlet and the sleeve end force gradually increases in taper.
  • the above-mentioned (1) to (7) characterized by comprising a hot water reservoir of the shape
  • the die casting forging device (9) and the swaging sleeve are fixed horizontally or vertically to a fixed mold and Z or a fixed platen
  • the die casting forging device (10) described in V to (9) or the mold cavity has a gas discharge passage, and a gap for the molten metal solidification zone connected to the gas discharge passage is provided in the vicinity of the gas discharge passage.
  • the above-mentioned (1) is characterized in that a molten metal supply pipe connected to the opening is provided, and an openable and closable hot water supply lid having a sealing force capable of withstanding gas pressurization is provided at the molten metal supply pipe.
  • the present invention is a forging method using the die casting forging apparatus according to any one of the above (1) to (14), wherein the molten metal is fed into the pouring sleeve through the pouring stalk from the gas pressure pouring pot force.
  • the plunger sliding in the scissor sleeve is advanced and the plunger tip of the plunger closes the melt delivery opening of the scissor sleeve, the front part of the plunger tip in the scissor sleeve is melted.
  • the large-diameter sliding part is inserted into the pinching sleeve, the large-diameter sliding part and the plunger tip A gas chamber is formed between the gas chamber, the gas is fed into the gas chamber, the plunger is further advanced, and the rear end of the plunger tip reaches the molten metal delivery opening to connect the gas chamber and the stalk.
  • the mold cavity is filled with the molten metal at a high speed, and the molten metal in the blocked cavity is effectively pressurized so that there is no generation of shrinkage and no entrainment of gas. It is possible to provide a die casting apparatus that can be easily manufactured, has a high work efficiency and is easy to maintain, and has a low equipment cost, and a die casting method using the die casting apparatus.
  • FIG. 1 is a schematic longitudinal sectional view of a die casting forging apparatus of the present invention.
  • FIG. 2 is a view taken along the line AA in FIG.
  • FIG. 3 is an explanatory view showing the operating state of the die casting forging apparatus of the present invention shown in FIG. 1, showing the state before swaging.
  • FIG. 4 is an explanatory view showing an operating state of the die casting forging apparatus of the present invention shown in FIG. 1, showing a state in which the molten metal is supplied into the filling sleeve.
  • FIG. 5 is an explanatory view showing an operating state of the die casting forging apparatus of the present invention shown in FIG. 1, showing a state in which molten metal is filled into a mold cavity.
  • FIG. 6 is an explanatory view showing the operating state of the die casting forging apparatus of the present invention shown in FIG. 1, showing a state in which the molten metal in the mold cavity is pressurized.
  • FIG. 7 is an explanatory view showing the operating state of the die casting forging apparatus of the present invention shown in FIG. 1, showing a state in which the mold is opened after filling and cooling of the molten metal is completed.
  • FIG. 8 is an explanatory view showing the operating state of the die casting forging apparatus of the present invention shown in FIG. This indicates the state of protruding.
  • FIG. 9 is a view showing an operating state of a die casting forging apparatus that is effective in another embodiment of the present invention, and shows a state in which molten metal is supplied into the staking sleeve.
  • FIG. 10 is a diagram showing an operating state of the die casting apparatus of the present invention shown in FIG. 9, and shows a state where the molten metal has been filled into the mold cavity.
  • FIG. 11 is a schematic longitudinal sectional view of a die casting forging apparatus that works on another embodiment of the present invention.
  • FIG. 12 is a schematic longitudinal sectional view of a conventional general die casting forging apparatus.
  • the die casting forging apparatus of the present invention includes a fixed mold and a movable mold that can form mold cavities, a swivel sleeve that is provided on the fixed mold side and communicates with the mold cavities, and the inside of the swivel sleeve.
  • An apparatus main body having a plunger for injecting the molten metal that has been slid into the mold cavity into the mold cavity and the molten sleeve from below through the molten metal delivery opening formed in the inserted sleeve.
  • the die casting forging device of the present invention which can be used, has a small pouring pot and can increase the gas pressure, so it can secure a high pouring speed, enable thin-walled forging, and move the pouring pot. As a result, it is easy to refill the molten metal, and the equipment can be easily arranged and operated as well as the equipment cost is reduced.At the same time, the pouring sleeve can be cleaned by removing the pouring pan outside the machine when the mold is opened. The spraying work for cooling and lubricating the mold surface can be done easily and safely.
  • the forged product that can be produced by the die cast forging apparatus of the present invention is not particularly limited, but a light metal alloy, particularly an aluminum alloy having a large solidification shrinkage is preferable.
  • the forging apparatus of the present invention that can prevent the formation of sink nests is This method can be applied particularly advantageously when a thin and large forged product is manufactured from a molten metal such as a lumi-um alloy having a large solidification shrinkage.
  • the gas pressurizing pouring pot in the filling means is not particularly limited as long as it is a pouring pan capable of gas pressurization and can be attached to and detached from the apparatus main body.
  • the gas pressure pouring pan needs to have a sealed structure.
  • a gas pressurized pouring pan with an open top can be provided with a lid, but it can also be sealed. Is preferably formed.
  • the gas pressurized pouring pan has a stagnation stalk. Specifically, for example, the upper surface of the stalk can be pressed against the lower portion of the swaging sleeve to form a sealed structure.
  • the upper end of the gas pressurized pouring pan can be brought into close contact with the device main body to form a sealed structure.
  • the upper surface can be pressed against the lower surface of the fixed plate to form a sealed structure, or the sealed structure can be formed by pressing into a seal packing provided at the lower part of the fixed mold or fixed plate.
  • the molten metal is introduced by using, for example, a hot water supply ladle above the desorbed (removed) gas pressurized pouring pan. Therefore, the molten metal can be replenished very easily.
  • the gas pressurized pouring pan may have a molten metal supply pipe (a molten metal supply passage) communicated with an opening provided in a lower portion thereof.
  • a gas supply port of the molten metal supply pipe has a gas
  • An openable and closable hot water cap with a sealing force that can withstand pressurization is provided.
  • the lower part of the gas pressurized hot pot where the opening is provided means the part below the molten metal surface in the molten metal (when full) and is the part below the lower end of the stagnation stalk. Is preferred.
  • the pressurized gas hot-water pouring pan has a heating means. This suppresses the formation of a solidified layer, and it is possible to suppress the occurrence of defects in the forged product as much as possible with good hot water circulation. It becomes.
  • the capacity of the gas pressurized pouring pan can accommodate, for example, molten metal required for 1 to 3 times of pouring from the viewpoint of preventing the enlargement of the apparatus and the ease of carrying the gas pressurized pouring pan. It is preferable to have a capacity. It is more preferable that the capacity be enough to accommodate the molten metal required for one pour.
  • the capacity to accommodate the molten metal required for one squeeze the amount of molten metal in the pouring pan at each squeeze is always constant, so it is easier and more continuous to fill without the need for pressure correction.
  • Such downsizing of the gas pressurized pouring pan can raise the molten metal surface and reduce the volume of the gas part, thereby making it possible to easily adjust the amount of molten metal supplied and to increase the gas pressure.
  • Quantitative molten metal supply to mold cavities, high speed of supply speed and shortening of shot time lag can be achieved, and high quality forging can be produced for thin and large forged products.
  • the use of such a pouring pan shortens the production cycle time, thus improving productivity.
  • the squeezing means preferably has a vacuum suction mechanism for sucking the gas in the mold cavity by vacuum and filling the molten metal in the gas pressurized pouring pot by vacuum suction.
  • a vacuum suction mechanism for sucking the gas in the mold cavity by vacuum and filling the molten metal in the gas pressurized pouring pot by vacuum suction.
  • the molten metal in the swaging sleeve can be poured into the mold cavity so as to pass through a fixing plate for fixing a fixed mold made of alloy steel, for example.
  • a fixing plate for fixing a fixed mold made of alloy steel for example.
  • the hot water supply device is installed in a substantially vertical state.
  • the filling sleeve is provided with a molten metal delivery opening that is a communication port with Stoke.
  • a horizontal type water heater has a molten metal delivery opening on the lower surface of the penetration sleeve
  • a vertical type water heater has a molten metal delivery opening on the side of the penetration sleeve.
  • a molten metal delivery opening is provided near the tip of the squeeze sleeve closer to the mold cavity, or the molten metal delivery opening is fixed on the fixed mold side fixed by the stationary platen.
  • the volume in front of the plunger tip in the swallowing sleeve and the maximum horizontal position of the sleeve of the hot water reservoir are below
  • the sum of the inner volume and the inner volume of the plunger sleeve is smaller than the amount of pouring required for one forging, it is possible to fill at least the front portion of the plunger tip in the swaging sleeve with the molten metal.
  • a plunger tip capable of sliding in the air tight sleeve in an airtight manner.
  • Examples include a plunger rod that can move the plunger tip back and forth, and examples of the drive source for the reciprocating movement of the plunger rod include a hydraulic cylinder and a servo motor.
  • the molten metal from the stalk is normally used even when the plunger tip is positioned at the advance limit of the swaging sleeve so that the molten metal does not flow out to the back of the plunger tip.
  • a plunger tip that is long enough to close the delivery opening is preferred to avoid operating problems.
  • the plunger tip when the plunger tip is positioned at the advance limit of the swaging sleeve, it is also possible to use a plunger tip having such a length as to open the molten metal delivery opening.
  • the plunger rod is provided with a large-diameter sliding portion that slides in the back portion of the plunger rod, It is preferable that a gas chamber be formed between the large-diameter sliding portion and the plunger tip of the plunger rod.
  • a gas chamber is formed between the plunger tip located at the front and the large-diameter sliding portion located at the rear, and gas is fed into the powerful gas chamber using the gas supply means.
  • the rear end can reach the molten metal delivery opening to connect the gas chamber and the stalk, and the gas pressure from the gas chamber can drop the molten metal in the stalk into the pouring pan.
  • the gas pressure in the gas chamber is not particularly limited, but the same gas supply means as the gas supply means for supplying the gas to be fed to the pouring pan, which is preferably equal to the molten metal pouring pressure, can be used. .
  • the rear portion of the plunger head where the large-diameter sliding portion is provided may be a position having a certain distance from the plunger tip so that a gas chamber having a predetermined capacity can be formed.
  • the center and rear end of the plunger rod can be mentioned, and the large-diameter sliding part can be integrally molded with the plunger rod, as with the plunger tip, or can be attached separately. .
  • a pressurizing means for pressurizing the molten metal injected into the mold cavity is provided in a hot water reservoir for a pressurizing means such as a mold product part of the mold cavity.
  • a pressurizing means for pressurizing the molten metal injected into the powerful mold cavity it is possible to suppress the formation of the shrinkage nest during solidification by pressurizing the molten metal filled in the closed mold cavity.
  • a pressure pin slidably disposed on the movable mold that forms the cavity product part of the mold cavity is concretely used. Can be exemplified.
  • the pressure pin can be advanced into the mold cavity to pressurize the molten metal.
  • the advancement speed of the pressurization pin can be reduced by adjusting the pressurization speed, for example, by controlling the program so that the speed of the solidification and shrinkage of the melt in the cavity product section is adjusted. It is possible to prevent the formation of shrinkage nests while preventing burrs from being blown with a press device with a high clamping force. Also, a plurality of pressure pins can be provided.
  • the mold cavity a mold cavity capable of fabricating a thin and large forged product is preferred.
  • the mold cavity is inserted into the adjacent mold cavity entrance in communication with the insertion sleeve.
  • the sleeve end force also has a hot water reservoir formed in a tapered shape, and the plunger does not pressurize the solidified layer generated on the side wall of the hot water reservoir. This is more preferable in that the molten metal can be sufficiently pressurized with a small applied pressure.
  • the powerful hot water reservoir can be communicated with the mold cavity through the side gate.
  • the molten metal in the gas pressurized molten metal pan is the lowest, although it is provided in the apparatus main body or in the gas pressurized molten metal hot pot. It is preferable that the lower end is located below the hot water surface. As a result, it becomes possible to suppress defects in the manufactured product due to the mixing of the solidified layer and the acid film without mixing the acid film into the molten metal.
  • a gas discharge passage capable of discharging a gas present in the cavity when the molten metal is filled in the mold cavity, and a molten metal coagulation zone connected to the gas discharge passage. What has a space
  • gap is preferable.
  • the gas discharge passage is preferably composed of a gas discharge hole penetrating through the movable mold and a gas discharge gap.
  • the molten metal solidification zone gap is preferably provided in the vicinity of the gas discharge passage, and particularly preferably close to the pressurizing means.
  • the molten metal solidification zone can be used to solidify the molten metal, and in combination with the plunger,
  • air vent valves, filters, etc. are installed and complicated by simply providing a gap for the molten metal solidification zone that can be used as long as it can seal and close the inside of the cavity.
  • the inside of the cavity can be easily sealed and closed without using a simple switching valve or valve, and complicated operations such as pressure adjustment are not required when operating the forging device. It can be said that it is extremely practical to provide a gap for the molten metal solidification zone.
  • the molten metal solidification zone gap communicates with the gas discharge passage through a gas discharge gap formed between the outer peripheral surface of the pressure pin and the inner peripheral surface of the movable mold.
  • the melt solidification zone melt gap can be illustrated as a powerful melt solidification zone gap, which is provided concentrically with the pressure pin and has an inner diameter that is 1 to 5 mm larger than the diameter of the pressure pin and about 10 to 40 mm.
  • Specific examples of the voids serving as a molten metal solidification zone having a depth (length) of 2 mm can be given.
  • each hot water pool portion is slightly larger than the outer shape of the pressure pin, the solidified layer formed on the outer peripheral wall of each hot water pool portion is caused by the pressure pin to move into the product.
  • the pressure resistance of the pressure pin can be reduced.
  • the gap for the molten metal solidification zone is designed to have a dimension that matches the molten metal temperature, the molten metal is cooled and solidified in this gap when the molten metal is filled. It does not enter the exit gap.
  • the gas discharge gap preferably has a structure or a size that does not allow the hot water to flow in.
  • the gas discharge gap is provided concentrically with the pressure pin, and is smaller than the diameter of the pressure pin.
  • Specific examples include gas discharge voids having an inner diameter that is about 4 to 1 mm larger.
  • the molten metal penetration start speed by the combined use of the gas pressure from the gas pressurized pouring pan and the vacuum suction mechanism is 1.0 to 2.4 mZsec, which is the optimum value, it is provided close to the outer periphery of the pressure pin.
  • the air resistance in the two-stage gaps such as the molten metal solidification zone gap and gas discharge gap increases, but the above-mentioned molten metal solidification zone gap and gas discharge gap can be selected by appropriately selecting the number and arrangement of the pressure pins.
  • the installation of can also achieve the purpose.
  • those skilled in the art can easily design a structure in which the hot water is cooled and solidified in the melt solidification zone gap having a two-stage gap and does not enter the gas discharge gap narrower than the melt solidification zone gap. Further, in order to cool and solidify the hot water in the molten metal solidification zone gap, a material having good heat conductivity such as beryllium copper can be used for the pressure pin, and the inside can be cooled with water.
  • a material having good heat conductivity such as beryllium copper can be used for the pressure pin, and the inside can be cooled with water.
  • the die casting forging method of the present invention is a forging method using the above-mentioned die casting forging device, in which the molten metal is sent to the pouring sleeve through the pouring stalk from the gas pressure pouring hot pot power, and then in the pouring sleeve.
  • the plunger that slides forward is closed and the plunger tip of the plunger closes the molten metal delivery opening in the swaging sleeve, the front portion of the plunger tip in the swaging sleeve is filled with molten metal, and , Move the plunger forward, inject molten metal into the mold cavity and pressurize it to produce a forged product without entrainment of gas.
  • the upper end of the gas pressurized pouring pan that received the molten metal was pushed into the seal knocking provided at the bottom of the fixed plate to seal the seal, preferably lk in the pouring pan Apply a gas pressure of g / cm 2 or more, pressurize the hot water surface in the pouring pan, and send the molten metal to the brewing sleeve through the brewing stalk.
  • the same gas pressure may be simultaneously obtained from above the hot water surface of the supply pipe.
  • the plunger sliding inside the swaging sleeve is advanced and the plunger tip of the plunger closes the molten metal delivery opening in the swaging sleeve, the front portion of the plunger tip in the swaging sleeve is moved.
  • Fill with molten metal further advance the plunger, inject the molten metal into the mold cavity.Pressurize, then pressurize the molten metal in the mold cavity with the pressurizing means (pressurizing pin), and sink into the cavity when solidifying.
  • a forged product with no generation of gas and no gas entrainment preferably a light metal alloy thin and large forged product.
  • the gas pressure in the gas pressurized molten metal pan is immediately released to the atmosphere and detached from the apparatus main body. It is preferable to supply the necessary molten metal and install it again in the main body to prepare for the next fabrication. As a result, the production can be performed very efficiently using one gas pressurized hot water pot. It is also possible to forge using a plurality of gas pressurized pouring pans.
  • the gas in the molten metal pouring pot is released to the atmosphere, and the molten metal ladle is attached or detached with or without the main body of the apparatus. Open the lid and supply the next molten metal.
  • the die casting of the present invention is provided with a large-diameter sliding portion at the rear portion of the plunger rod.
  • a forging device when the plunger sliding inside the insertion sleeve is advanced and the large-diameter sliding portion of the plunger rod of the plunger is inserted into the insertion sleeve, the plunger tip A gas chamber is formed around the small-diameter portion of the plunger rod between the large-diameter sliding portion, the gas is fed into the gas chamber, the plunger is further advanced, and the rear end of the large-diameter storage portion Can reach the molten metal delivery opening, connect the gas chamber and stalk, and drop the molten metal in the stalk into the pouring pan with the gas pressure of the gas chamber.
  • FIG. 1 is a schematic cross-sectional view showing a die casting forging apparatus according to the present invention
  • FIG. 2 is an AA arrow view in FIG. 1
  • FIGS. 3 to 8 are drawings of the die casting forging apparatus according to the present invention shown in FIG. It is explanatory drawing which shows an operation state.
  • a die casting forging apparatus provided with a gas pressurized pouring pan and a vacuum suction mechanism will be described as an example of the filling means.
  • the die casting forging apparatus of the present invention shown in Figs. 1 to 8 is a fixed mold 1 made of alloy steel fixed to a fixed platen 3 arranged on the right side in the drawing, and crimped to the fixed mold 1.
  • the movable mold 2 placed on the left side of the drawing and the mold sleeve C for forming the molten metal into the mold cavity C formed between the fixed mold 1 and the movable mold 2
  • the plunger 6 that reciprocates in the sleeve 5, the gas pressurization pouring pan 7 that can be attached and detached to supply the molten metal to the swaging sleeve 5 through the stalk 9, and the molten metal in the mold cavity C are pressurized.
  • a pressurizing pin 11 and a vacuum suction passage 13 communicating with the mold cavity C are provided, and molten metal is automatically poured into the mold cavity C and cooled to manufacture a fabricated product.
  • the die casting forging apparatus is provided with a mold clamping device for performing mold opening for taking out the forged product 10 after the molten metal is cooled.
  • the swaging sleeve 5 passes through the stationary platen 3 so as to communicate with the mold cavity C, and is fixed substantially horizontally to the stationary mold 1, and the molten metal M is molded into the mold cavity.
  • Hot water supply to C On the lower surface of the pipe wall near the tip near the mold cavity, there is a molten metal delivery opening 51 to which a stalk (connecting duct) 9 inserted into the gas pressurized hot water pouring pan 7 is connected. .
  • the inner diameter of the entrapment sleeve 5 increases the degree of fullness of the molten metal to reduce the volume of the space to eliminate gas entrainment.
  • a plunger that slides on the inner wall of the entrainment sleeve 5 in an airtight manner.
  • the diameter is smaller than the conventional one, and the plunger tip 63 of the plunger 6 is inserted into the insertion sleeve 5.
  • the front portion of the plunger chip 63 in the swallow sleeve 5 is configured to be filled with at least the molten metal.
  • the length of the swaging sleeve 5 is configured to be short and small in diameter.
  • the plunger 6 reciprocating in the swaging sleeve 5 pushes the molten metal M supplied to the swaging sleeve 5 to the mold cavity C, and is driven by the hydraulic cylinder 61 to reduce the diameter.
  • a plunger tip 63 constituting the same.
  • the length of the plunger tip 63 in the axial direction closes the molten metal delivery opening 51 even in the advance limit, and when placed in the retracted limit, the molten metal delivery opening provided on the lower surface of the pipe wall of the swaging sleeve 5.
  • 51 does not close, and its tip is positioned immediately before the molten metal delivery opening 51.
  • the molten metal delivery opening 51 The molten metal supplied to the swaging sleeve 5 is moved forward while the molten metal delivery opening 51 is closed by moving the front of the molten metal M to the swaging sleeve 5 and the forward movement. Extrusion and supply of excess molten metal M from the molten metal delivery opening 51 to the scooping sleeve 5 can be prevented.
  • the gas pressurizing pouring pan 7 is a pressure pouring pan that can accommodate the molten metal necessary for one pouring, and is connected to the pouring sleeve 5 through the stalk 9 to the powerful pouring sleeve 5. Hold molten metal M to be supplied.
  • a pressurized gas passage 81 communicates with the pressurized gas pouring pan 7.
  • the gas pressure pouring pan 7 can be pressurized. When the gas pressurized pouring pan 7 is attached to the main unit and sealed with knocking 8, the gas volume at the top of the gas pressurized pouring pan 7 is small.It is easy to control the pouring rate by the gas pressure.
  • the molten metal M can be easily replenished by any method such as a molten metal pump or a ladle. It has a structure.
  • the lower end inlet of the stalk 9 is located below the lower limit of the molten metal surface that is lowered by one injection of the mold cavity, and when the molten metal M is delivered, The acid film near the surface is not mixed into the swaging sleeve.
  • Stoke 9 is made of ceramic, which reduces the adhesion of molten metal M and prevents erosion by molten metal M.
  • the mold cavity C communicating with the swaging sleeve 5 is provided with a tapered hot water reservoir C1 that is slightly larger than the inner diameter of the swaging sleeve 5, and the hot water reservoir C1 is inserted into the metal via the side gate C2. It communicates with the product part of the type Cavity C.
  • a pressure pin 11 is provided at one end of the product part of the mold cavity C to press the molten metal in the mold cavity C into the pressure pin hot water reservoir 14 by driving the hydraulic cylinder 12 for the pressure pin. It has been.
  • a melt solidification zone gap communicating with the vacuum suction passage (gas discharge passage) 13 is provided in the vicinity of the force pressurizing means (not shown).
  • the hydraulic valve 61 is opened to actuate the hydraulic cylinder 61, and the plunger tip 63 starts to advance through the plunger rod 62.
  • the molten metal delivery opening 51 is closed and the mold Cavity C is filled with molten metal.
  • the plunger tip 63 is advanced to fill the mold cavity C (cavity product part) with molten metal, the molten metal surface is ruffled.
  • the inner diameter of the hot water reservoir C1 of the mold cavity C is designed to be larger than the inner diameter of the swaging sleeve 5, a solidified layer is temporarily generated in the hot water reservoir C1 of the mold cavity C. Even in this case, the plunger 6 is not pushed into the mold cavity C.
  • FIG. 9 and FIG. 10 are explanatory diagrams of a die casting forging apparatus according to another embodiment of the present invention.
  • FIG. 9 shows a state in which molten metal is supplied into the swaging sleeve
  • FIG. This shows the state where the molten metal has been filled into the mold cavity.
  • the die casting forging apparatus according to another embodiment of the present invention is a type in which the molten metal in the stalk is immediately dropped into the pouring pan after the completion of the pouring.
  • the rear end portion 64 (large-diameter sliding portion 64) has the same diameter as that of the plunger tip 63, and when inserted into the swaging sleeve 5, a gas chamber 52 is formed and gas is supplied using a gas supply means. Gas is introduced from the chamber entrance 82. That is, as shown in FIG. 9, in the initial stage of filling the molten metal, no gas is supplied to the gas chamber 52 and the rear of the plunger tip 63 is opened, but by moving the plunger of a predetermined distance forward, A sealed gas chamber 52 is formed, and a gas having the same pressure as that in the pouring pan 7 is supplied into the powerful gas chamber 52 using a gas supply means. As shown in FIG.
  • the gas chamber 52 is connected to the stalk 9 and the gas in the gas chamber 52 is delivered to the molten metal.
  • the gas flows out from the opening 51 to the Stoke 9 and the gas pressure is the same as that of the gas pressurizing pouring pan 7.
  • the (residual) molten metal surface immediately drops down to the molten metal surface in the gas pressurized hot pot 7 and the gas in the pressurized gas hot pot 7 and the gas chamber 52 can be immediately released to the atmosphere.
  • FIG. 11 is an explanatory view of a die casting forging apparatus according to still another embodiment of the present invention.
  • a gas pressurized hot water pouring pan 7 includes a molten metal supply pipe 21 communicating with an opening provided in a lower portion thereof, and a hot water inlet 22 of the molten metal supply pipe 21 is provided.
  • An openable / closable hot water supply lid 25 having a sealing force capable of withstanding gas pressurization is provided.
  • the hot water supply sleeve 21 provided at the upper part of the molten metal supply pipe 21 in the powerful die casting forging apparatus is provided with a gas outlet 24, and when the gas is pressurized, the pressurized gas inlet above the gas pressurized hot water pan 7 is provided.
  • the pressurized gas is supplied from 81 and the same pressurized gas is supplied from the gas outlet 24 so that the molten metal can be supplied and filled more efficiently. Then, after pouring, the molten metal can be immediately dropped by introducing the gas from the gas chamber 52 into the stalk 9 as described above.
  • the gas in the port 22 is vacuumed from the gas outlet 24, the molten metal in the molten metal supply pipe 21 is pulled up, the molten metal in the molten metal pan 7 is pulled down to the lower end of the stalk 9, and the molten metal in the stalk 9 is further removed. You can drop it quickly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Forging (AREA)

Abstract

Un appareil de moulage de poinçon capable de créer facilement un moule sans entraîner de cavités de retrait ni d'inclusion des gaz, en remplissant rapidement un métal moulé dans une cavité de moule de métal et en pressurisant efficacement le métal moulé dans la cavité fermée, qui est excellent en efficacité de travail, facile à entretenir et peut être fabriqué à faible coût ; une méthode de moulage de poinçon utilisant l'appareil. L'appareil comprend un corps ayant un moule fixe (1) et un moule amovible (2) capable de former la cavité du moule de métal, un manchon de moulage (5) installé sur le moule fixe (1) et communiquant avec la cavité du moule de métal (C) et un piston d'injection (6) glissant dans le manchon de moulage (5) pour injecter le métal fondu vers le manchon de moulage (5) dans la cavité de moulage de métal (C), enfin un moyen de moulage injectant, par-dessous, le métal fondu dans le manchon de moulage (5) via une ouverture de sortie du métal fondu (51) formée dans le manchon de moulage (5). La méthode de moulage comprend également un berceau de versement du métal fondu pressurisé (7) qui s'attache et se détache du corps.
PCT/JP2005/011513 2004-06-24 2005-06-23 Appareil de moulage de poinçon et méthode de moulage de poinçon WO2006001325A1 (fr)

Applications Claiming Priority (6)

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JP2004187024 2004-06-24
JP2004-187024 2004-06-24
JP2004277194 2004-09-24
JP2004-277194 2004-09-24
JP2005-142425 2005-05-16
JP2005142425A JP4402007B2 (ja) 2004-06-24 2005-05-16 ダイカスト鋳造装置及びダイカスト鋳造方法

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WO2006001325A1 true WO2006001325A1 (fr) 2006-01-05

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008152665A1 (fr) * 2007-06-15 2008-12-18 Giorgio Benzi Appareil de coulage sous pression équipé d'un cylindre à double injection
CN104014760A (zh) * 2014-03-10 2014-09-03 宁波市俊博机械有限公司 一种可以防止铸件缩孔的压铸模具及其压铸工艺
CN114850439A (zh) * 2022-05-09 2022-08-05 深圳市宏泰丰盛科技有限公司 一种防飞料的铝合金压铸设备

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JP2008068315A (ja) * 2006-08-14 2008-03-27 Fujino Gijutsu Consultant:Kk ダイカスト鋳造装置及びダイカスト鋳造方法
JP2008264796A (ja) * 2007-04-16 2008-11-06 Fujino Gijutsu Consultant:Kk 竪型鋳造装置及び竪型鋳造方法
CN102974797B (zh) * 2012-11-02 2015-05-20 宁波环亚机械制造有限公司 一种led散热器压铸模具
JP7254619B2 (ja) 2019-05-17 2023-04-10 芝浦機械株式会社 ダイカストマシン
JP7254618B2 (ja) 2019-05-17 2023-04-10 芝浦機械株式会社 ダイカストマシン
CN114160769A (zh) * 2021-12-22 2022-03-11 苏州三基铸造装备股份有限公司 一种保温炉免卸压的高真空压铸设备及铸造方法

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JPS57152361A (en) * 1980-11-03 1982-09-20 Uaingaruten Ag Maschf Method of manufacturing casted lump having little gas, gross porosity and oxide, pressure casting machine for executing said method and control unit for controlling said pressure
JPH07155924A (ja) * 1993-12-09 1995-06-20 Kobe Steel Ltd ダイカスト鋳造機の給湯方法
JP2001071111A (ja) * 1999-09-02 2001-03-21 Nissan Motor Co Ltd 鋳造装置
JP2003225748A (ja) * 2002-01-31 2003-08-12 Hitachi Metals Ltd 真空ダイカスト装置
JP2003305555A (ja) * 2002-04-11 2003-10-28 Fujino Gijutsu Consultant:Kk ダイカスト鋳造装置及びダイカスト鋳造方法
JP2004066278A (ja) * 2002-08-05 2004-03-04 Hitachi Metals Ltd 真空ダイカスト方法および真空ダイカスト装置

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JPS57152361A (en) * 1980-11-03 1982-09-20 Uaingaruten Ag Maschf Method of manufacturing casted lump having little gas, gross porosity and oxide, pressure casting machine for executing said method and control unit for controlling said pressure
JPH07155924A (ja) * 1993-12-09 1995-06-20 Kobe Steel Ltd ダイカスト鋳造機の給湯方法
JP2001071111A (ja) * 1999-09-02 2001-03-21 Nissan Motor Co Ltd 鋳造装置
JP2003225748A (ja) * 2002-01-31 2003-08-12 Hitachi Metals Ltd 真空ダイカスト装置
JP2003305555A (ja) * 2002-04-11 2003-10-28 Fujino Gijutsu Consultant:Kk ダイカスト鋳造装置及びダイカスト鋳造方法
JP2004066278A (ja) * 2002-08-05 2004-03-04 Hitachi Metals Ltd 真空ダイカスト方法および真空ダイカスト装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008152665A1 (fr) * 2007-06-15 2008-12-18 Giorgio Benzi Appareil de coulage sous pression équipé d'un cylindre à double injection
CN104014760A (zh) * 2014-03-10 2014-09-03 宁波市俊博机械有限公司 一种可以防止铸件缩孔的压铸模具及其压铸工艺
CN104014760B (zh) * 2014-03-10 2017-03-01 宁波市俊博机械有限公司 一种可以防止铸件缩孔的压铸模具及其压铸工艺
CN114850439A (zh) * 2022-05-09 2022-08-05 深圳市宏泰丰盛科技有限公司 一种防飞料的铝合金压铸设备
CN114850439B (zh) * 2022-05-09 2024-04-26 广东力源科技股份有限公司 一种防飞料的铝合金压铸设备

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