WO2011049249A2 - Dispositif et procédé de moulage de moule - Google Patents

Dispositif et procédé de moulage de moule Download PDF

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Publication number
WO2011049249A2
WO2011049249A2 PCT/JP2011/052641 JP2011052641W WO2011049249A2 WO 2011049249 A2 WO2011049249 A2 WO 2011049249A2 JP 2011052641 W JP2011052641 W JP 2011052641W WO 2011049249 A2 WO2011049249 A2 WO 2011049249A2
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WO
WIPO (PCT)
Prior art keywords
frame
sand
filling
pattern
casting
Prior art date
Application number
PCT/JP2011/052641
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English (en)
Japanese (ja)
Other versions
WO2011049249A3 (fr
Inventor
昌秀 野口
酒井　毅
和憲 小倉
Original Assignee
新東工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 新東工業株式会社 filed Critical 新東工業株式会社
Priority to CN201180016757.4A priority Critical patent/CN102834200B/zh
Priority to EP11715147.2A priority patent/EP2604362A4/fr
Publication of WO2011049249A2 publication Critical patent/WO2011049249A2/fr
Publication of WO2011049249A3 publication Critical patent/WO2011049249A3/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/02—Compacting by pressing devices only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/23—Compacting by gas pressure or vacuum
    • B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles

Definitions

  • the present invention relates to a mold making apparatus and a mold making method for making a mold by squeezing casting sand filled in a casting frame.
  • a mold making apparatus for example, a sand hopper having an opening at the top and an openable louver at the lower part and a squeeze means having a number of segment squeeze feet are connected and arranged. And what makes the said sand hopper and the said squeeze means carry in / out alternately above the filling frame is made publicly known (for example, refer patent document 1).
  • Patent Document 1 Japanese Patent Laid-Open No. 7-185740
  • the present invention has been made in view of the above problems, and provides a mold making apparatus and a mold making method capable of preventing sand adhesion to the inner wall surface of a sand hopper and simplifying the structure of the apparatus.
  • the purpose is to provide.
  • the mold making apparatus of the present invention fills a molding space formed by a pattern plate, a casting frame and a filling frame placed on a pattern carrier with sand filling means, A molding apparatus for squeezing casting sand filled in the molding space by squeezing means to mold a casting mold, wherein the sand filling means is disposed above the casting frame and filling frame, and inside the molding frame.
  • a sand hopper for storing foundry sand, an openable louver gate disposed in the sand hopper, and disposed at an upper portion of the sand hopper and for supplying the foundry sand into the sand hopper
  • a sand supply port opening / closing means for opening and closing a sand supply port as an opening, and an air ejection chamber attached to the inner surface of the sand hopper.
  • the mold making apparatus also includes an elevating cylinder mounted on a base, a table connected to the elevating cylinder, the pattern plate, and surrounding the outer periphery of the pattern plate.
  • a frame-shaped frame that is carried in and out of the table, a frame carrying-in / out mechanism that carries the casting frame in and out of the pattern carrier, and an inside of the frame carrying-in / out mechanism.
  • the squeeze means provided, the fill frame disposed so as to be movable up and down above the casting frame, and disposed on the outside of the base and carried out from the top of the table to the outside of the base.
  • the sand filling means for filling the molding space formed by the pattern plate, the casting frame, and the filling frame with the foundry sand.
  • the mold making apparatus of the present invention is characterized in that an air supply valve is communicated with the sand filling means.
  • the mold making method of the present invention is a method in which a molding space formed by a pattern plate, a casting frame and a filling frame placed on a pattern carrier is filled with foundry sand by a sand filling means.
  • a mold molding method for forming a mold by squeezing the foundry sand filled in the molding space with a squeeze means, the step of filling the molding space with the sand filling means with the sand filling means in the sand filling means A step of closing the sand supply opening / closing means, a step of jetting air from an air jet chamber attached to an inner surface of a sand hopper in the sand filling means, and a step of opening an openable louver gate in the sand filling means. It is characterized by having.
  • the pattern carrier is one of the two pattern carriers provided with a frame-like frame on which the pattern plate is placed and which surrounds the outer periphery of the pattern plate and moves up and down.
  • the other pattern carrier is arranged on the upper side, and is placed on the outside of the base. Further, the empty cast frame and fill frame are placed on the one pattern carrier, and the other pattern carrier is placed. With the casting frame and filling frame filled with the foundry sand placed thereon, the one pattern carrier, empty casting frame and filling frame are carried out to the outside of the base, and The other pattern carrier, the step of carrying the casting frame and filling frame filled with foundry sand above the table, and the other pattern carrier, casting frame and filling frame filled with foundry sand.
  • a step of raising, a step of causing the upper surface of the frame-shaped frame of the other pattern carrier to protrude from the parting surface of the pattern plate, and a filling frame in which the lower surface of the sand hopper is carried out of the base A molding space formed by a pattern plate placed on the one pattern carrier, an empty casting frame and a filling frame, and a squeeze member in the squeezing means is lowered to lower the foundry sand , Squeezing the frame, closing the casting frame loading / unloading mechanism, raising the pattern plate until the upper surface of the frame-shaped frame of the other pattern carrier and the parting surface of the pattern plate are raised to the same height.
  • a step a step of separating the sand hopper from the filling frame carried outside the base, a step of lowering the other pattern carrier, a step of closing an openable louver gate in the sand filling means, Opening the sand supply port opening / closing means in the sand filling means, supplying the foundry sand into the sand hopper from the sand supply port, a filling frame disposed above the other pattern carrier, and the other pattern carrier
  • a step of carrying an empty casting frame to a position between and a process of placing an empty casting frame and a filling frame on the other pattern carrier And a step of opening the cast-in / out mechanism.
  • one of the pattern carriers is a table among the two pattern carriers on which the pattern plate is placed and a frame-like frame that surrounds the outer periphery of the pattern plate and moves up and down is provided.
  • the other pattern carrier is arranged on the upper side, and is placed on the outside of the base. Further, the empty cast frame and fill frame are placed on the one pattern carrier, and the other pattern carrier is placed.
  • the one pattern carrier, empty casting frame and filling frame are carried out to the outside of the base, and
  • the process of carrying the other pattern carrier, casting frame and filling frame filled with foundry sand above the table, and the other pattern carrier, casting frame and filling frame filled with foundry sand A step of raising, a step of causing the upper surface of the frame-shaped frame in the other pattern carrier to protrude from the parting surface of the pattern plate, and a filling frame in which the lower surface of the sand hopper is carried out of the base And forming a molding space with a pattern plate placed on the one pattern carrier, an empty casting frame and a filling frame, and a casting filled with the other pattern carrier and foundry sand.
  • the step of further raising the frame and the filling frame to primarily squeeze the foundry sand, the step of closing the casting frame loading / unloading mechanism, and the upper surface of the frame-shaped frame in the other pattern carrier and the parting surface of the pattern plate are the same height
  • the other pattern carrier, the casting frame filled with foundry sand and the filling frame are further raised to tertiary squeeze the foundry sand, and the other
  • the molding sand in the molding space is opened by opening an air supply valve communicated with the sand filling means after the step of filling the molding space with the sand filling means by the sand filling means.
  • the molding sand in the molding space is pre-compressed by allowing compressed air to flow therethrough.
  • the present invention provides a molding space formed by a pattern plate mounted on a pattern carrier, a casting frame, and a filling frame with sand filling means, and then squeezing the molding sand filled in the molding space.
  • a mold making apparatus for squeezing a mold to form a mold wherein the sand filling means is disposed above the casting frame and the filling frame and stores the foundry sand therein, and the sand hopper And an openable louver gate disposed inside the sand hopper, and a sand supply that is disposed above the sand hopper and opens and closes a sand supply port that is an opening for supplying the foundry sand into the sand hopper Since the mouth opening / closing means and the air ejection chamber attached to the inner surface of the sand hopper are provided, there are various effects such as prevention of sand adhesion to the inner wall surface of the sand hopper.
  • FIG. 1 It is side surface sectional drawing which shows embodiment of this invention, Comprising: An empty casting frame and filling frame are mounted on the pattern carrier above a table, and filling sand is filled on the pattern carrier outside a base. It is a figure which shows the state in which the cast frame and fill-frame which were made were mounted. It is side surface sectional drawing which shows the state which carried out the empty casting frame and filling frame to the outer side of a base by rotating a turntable, and carried the casting frame and filling frame filled with foundry sand above the table. is there. It is side surface sectional drawing which shows the state which raised the casting frame, the filling frame, and the frame-shaped frame in the table side, and formed the molding space in the outer side of the base.
  • a lifting cylinder 2 (hydraulic cylinder in this embodiment) is attached to the upper center of a base 1, and a table 3 is connected to the tip of the lifting cylinder 2.
  • Guide rods 4 are disposed on both outer sides of the elevating cylinder 2, and the guide rods 4 are slidably passed through a holder 5 mounted on the base 1. The tip of the guide rod 4 is connected to the table 3.
  • pillar 6 is standingly arranged by the right-and-left both sides (refer FIG. 1) on the said base 1, Between the upper ends of this support
  • the post 6 is also used.
  • a support member (not shown) is attached to the turntable 8, and pattern carriers 9 and 9 ⁇ / b> A are placed on both ends of the turntable 8 via the support member (not shown).
  • the turntable 8 is rotated by an actuator (not shown), and examples of the actuator include a hydraulic cylinder.
  • the pattern carriers 9 and 9A are carried in and out of the table 3 when the turntable 8 rotates while the table 3 is at the lower end.
  • pattern plates 10 and 10A are placed on the pattern carriers 9 and 9A, and a frame-like frame 11 that moves up and down surrounding the outer periphery of the pattern plates 10 and 10A is placed on the pattern carriers 9 and 9A. Is provided. A cast frame W and a fill frame 17 are placed on the pattern carriers 9 and 9A.
  • a plurality of (four in this embodiment) frame-like frame lifting cylinders 12 (hydraulic cylinders in this embodiment) are mounted on the table 3, and a rod head 13 is attached to the tip of the frame-like frame lifting cylinder 12. Are connected.
  • a plurality (four in this embodiment) of suspension rods 14 are suspended from the lower surface of the frame-shaped frame 11.
  • the frame-like frame 11 moves up and down via the suspension rod 14 by the expansion and contraction operation of the frame-like frame elevating cylinder 12.
  • the table 3 is equipped with a clamping device (not shown) for clamping the pattern carriers 9 and 9A. As a result, the clamp is released at the lower end of the table 3, and when the table 3 is lifted, the pattern carriers 9, 9A are clamped to the table 3.
  • an openable / closable cast-in / out conveyor 15 serving as a cast-in / out mechanism for carrying in / out the casting frame W is disposed above the pattern carriers 9 and 9A inside the support column 6.
  • the cast-in / out conveyor 15 includes an arm 15b whose upper end is rotatably connected to the frame 15a, a roller 15c attached to the tip (lower end) of the arm 15b, and a midway position in the vertical direction of the arm 15b. And a frame mounting member 15d fixed to the frame.
  • a plurality (four in this embodiment) of positioning pins 16 are fixed to the upper portion of the filling frame mounting member 15d.
  • the fill frame placing member 15d and the fill frame 17 are positioned by the positioning pins 16.
  • casting frame carry-in / out conveyor 15 is suspended from a lifting frame 19 via a hanging member 18, and the lifting frame 19 is moved up and down by a casting frame loading / unloading mechanism lifting cylinder (not shown).
  • squeeze means 20 is disposed inside the cast-in / out conveyor 15.
  • the squeeze means 20 includes a large number of cylinders (hydraulic cylinders in the present embodiment) 20a, a squeeze foot 20b as a squeeze member connected to the tip of the cylinder 20a, and a support 20c that supports the cylinder 20a. Has been.
  • the support 20c is fixed to the lower center of the upper frame 7.
  • a pattern carrier elevating means 21 is disposed outside the base 1 and below the pattern carrier 9A.
  • the pattern carrier lifting / lowering means 21 will be described in detail.
  • a pattern carrier elevating cylinder 21b (hydraulic cylinder in this embodiment) is attached to the center upper portion of the gantry 21a, and a driving roller conveyor 21c is connected to the tip of the pattern carrier elevating cylinder 21b.
  • Guide rods 21d are disposed on both outer sides of the pattern carrier elevating cylinder 21b, and the guide rods 21d penetrate the holder 21e mounted on the mount 21a so as to be slidable up and down.
  • the tip of the guide rod 21d is connected to the drive roller conveyor 21c.
  • the drive roller conveyor 21c is equipped with a clamping device (not shown) that clamps the pattern carriers 9, 9A. Thereby, the clamp is released at the lower end of the drive roller conveyor 21c, and when the drive roller conveyor 21c is raised, the pattern carriers 9, 9A are clamped on the drive roller conveyor 21c.
  • the casting frame W and the filling frame 17 outside the base 1 are clamped by a clamping means (not shown) attached to a sand hopper 22a described later. .
  • the pattern carrier elevating cylinder 21b is operated so that only the pattern carriers 9, 9A are brought to a predetermined height.
  • the clamping by the clamping device (not shown) that clamps the pattern carriers 9 and 9A is released.
  • the drive roller conveyor 21c the pattern carriers 9 and 9A on the drive roller conveyor 21c are carried out, and another pattern carrier is carried in.
  • a sand filling means 22 is disposed on the outside of the base 1 above the casting frame W and the filling frame 17, and the sand filling means 22 is fixed to a support frame 23.
  • the sand filling means 22 will be described in detail.
  • an openable louver gate 24 is disposed in the lower interior of a sand hopper 22a for storing the foundry sand S therein, and one end of the openable louver gate 24 is a rotating shaft.
  • a plurality of gate plates 24b fixed to 24a are arranged in the horizontal direction.
  • a release agent spraying means (not shown) is attached to a position between the openable louver gate 24 and the lower surface of the sand hopper 22a on the outer surface of the sand hopper 22a.
  • a sand supply port opening / closing means 25 is disposed above the sand hopper 22a.
  • the sand supply port opening / closing means 25 will be described in detail.
  • a sand supply port 25b which is an opening for supplying the foundry sand S into the sand hopper 22a, is provided in a ceiling portion of the casing 25a communicating with the sand hopper 22a. Is provided with a gate member 25c that opens and closes the sand supply port 25b by moving horizontally.
  • An opening / closing cylinder 25d for moving the gate member 25c horizontally is attached to one side surface of the casing 25a, and the gate member 25c is connected to the tip of the opening / closing cylinder 25d.
  • An air ejection chamber 26 is attached to the inner surface of the sand hopper 22a over the entire circumference, and the air ejection chamber 26 includes a hollow chamber 26a and a porous body disposed at the tip of the hollow chamber 26a. 26b.
  • a switching valve (not shown) communicates with the hollow chamber 26a, and when the switching valve is opened, the compression air is ejected from the porous body 26b through the hollow chamber 26a.
  • the porous body 26b is manufactured by sintering ultrahigh molecular weight polyethylene.
  • An air supply valve 28 is connected to the casing 25a of the sand supply port opening / closing means 25 via a pipe 27, and the air supply valve 28 is connected to a compressed air source (not shown).
  • Reference numeral 29 denotes a sand throwing chute attached to the ceiling of the casing 25a.
  • FIG. 1 shows that one of two pattern carriers 9 and 9A, one pattern carrier 9 (hereinafter referred to as a pattern carrier for a lower casting frame) is arranged above the table 3, and the other pattern carrier 9A (hereinafter referred to as an upper casting). (Referred to as a frame pattern carrier) is disposed outside the base 1, and an empty casting frame W and a filling frame 17 are placed on the lower casting frame pattern carrier 9, and the upper casting frame pattern On the carrier 9A, a casting frame W filled with foundry sand S and a filling frame 17 are placed. Examples of the foundry sand S in the present invention include green sand and ceramic artificial sand.
  • the pattern carrier 9 for the lower casting frame, the empty casting frame W and the filling frame 17 are carried out to the outside of the base 1, and the pattern carrier 9A for the upper casting frame, the casting The casting frame W and the filling frame 17 filled with the sand S are carried over the table 3 to be in the state shown in FIG.
  • the upper casting frame pattern carrier 9 ⁇ / b> A, the casting frame W filled with the casting sand S, and the filling frame 17 are raised through the table 3.
  • the pattern carrier elevating cylinder 21 b is extended to raise the lower casting frame pattern carrier 9, the empty casting frame W, and the filling frame 17.
  • the lower surface of the sand hopper 22a is brought into contact with the upper surface of the filling frame 17 carried out to the outside of the base 1, and the pattern plate 10, the empty casting frame W,
  • a molding space is formed by the filling frame 17, and the state shown in FIG.
  • the release agent is sprayed into the molding space by the release agent spraying means (not shown).
  • a stopper member (not shown) for preventing the rising of the filling frame 17 is attached to the lower surface of the upper frame 7. In the state shown in FIG. 3, the upper surface of the filling frame 17 on the base 1 side is in contact with the lower surface of the stopper member. It is touched.
  • the squeeze foot 20b is lowered by operating a large number of cylinders 20a to primarily squeeze the foundry sand S. Then, the cast-in / out conveyor 15 is closed by an opening / closing means (for example, a cylinder) (not shown) to be in the state shown in FIG.
  • an opening / closing means for example, a cylinder
  • the pattern plate 10A is lifted until the upper surface of the frame-shaped frame 11 and the parting surface of the pattern plate 10A in the upper cast frame pattern carrier 9A are at the same height.
  • the squeeze foot 20b is further lowered to secondary squeeze the foundry sand S.
  • the state where the casting frame W and the filling frame 17 are sandwiched between the frame-shaped frame 11 and the stopper member (not shown) is maintained. That is, the frame-shaped frame 11, the casting frame W, and the filling frame 17 do not move in the vertical direction.
  • the molding sand S is filled into the molding space by the sand filling means 22.
  • the sand supply port 25b is closed by the gate member 25c by extending the opening / closing cylinder 25d of the sand supply port opening / closing means 25.
  • the switching valve (not shown) is opened, the compression air is ejected from the porous body 26b through the hollow chamber 26a.
  • the plurality of pivot shafts 24a in the openable louver gate 24 are normally rotated by a gate opening / closing cylinder (not shown), and the plurality of gate plates 24b are changed from the horizontal state to the vertical state (louver gate 24 opening).
  • the molding sand S in the sand hopper 22a is filled in the molding space, and the state shown in FIG. 5 is obtained.
  • the compressed air is continuously ejected from the porous body 26b, and the compressed air is provided in the vent hole (not shown) provided in the pattern plate 10 or the filling frame 17.
  • the air is exhausted through a vent hole (not shown) provided on the side surface of the main body.
  • the squeeze foot 20b is further lowered to tertiary squeeze the foundry sand S to the state shown in FIG.
  • the air supply valve 28 compressed air is caused to flow through the foundry sand S in the molding space to pre-compress the foundry sand S in the molding space (so-called fluidized air). Pre-compression of foundry sand S by pressure).
  • an unillustrated exhaust valve communicated with the casing 25a is opened, and the compressed air remaining in the sand hopper 22a is exhausted.
  • the pattern plate 10A in the upper cast frame pattern carrier 9A is lowered and removed.
  • the state where the casting frame W and the filling frame 17 are sandwiched between the frame-shaped frame 11 and the stopper member (not shown) is maintained. That is, the frame-shaped frame 11, the casting frame W, and the filling frame 17 do not move in the vertical direction.
  • the pattern plate 10A is lowered by a predetermined height (30 mm in this embodiment), so that the die is removed.
  • the pattern carrier elevating cylinder 21 b is contracted to lower the pattern carrier 9 for the lower casting frame, the casting frame W, and the filling frame 17. Thereby, the upper surface of the filling frame 17 and the lower surface of the sand hopper 22a are separated from each other, and the state shown in FIG. 7 is obtained.
  • the upper casting cylinder pattern carrier 9A, the casting frame W, and the filling frame 17 are lowered by contracting the lifting cylinder 2. Then, the casting frame W is placed on the roller 15c, and the filling frame 17 is placed on the filling frame placing member 15d and positioned by the positioning pins 16. At this time, as the filling frame 17 is lowered, the lower surface of the stopper member (not shown) and the upper surface of the filling frame 17 are separated from each other.
  • the multiple cylinders 20a are contracted to raise the squeeze foot 20b.
  • the frame-shaped frame lifting cylinder 12 is contracted at the lower end of the table 3 to lower the frame-shaped frame 11.
  • the plurality of pivot shafts 24 a in the openable louver gate 24 are reversely rotated by a gate opening / closing cylinder (not shown), so that the plurality of gate plates 24 b are changed from a vertical state to a horizontal state (louver gate 24 Close).
  • the sand supply port 25b is opened by contracting the open / close cylinder 25d of the sand supply port opening / closing means 25.
  • the foundry sand S is supplied into the sand hopper 22a through the sand supply port 25b by a not-shown foundry sand supply means (for example, a belt feeder), and the state shown in FIG. 8 is obtained.
  • the cast frame W is carried out by the cast-in / out conveyor 15, and the empty cast frame W is carried into a position between the fill frame 17 and the upper-cast-frame pattern carrier 9A.
  • the cast-frame carry-in / out conveyor 15 is lowered by the above-described cast-frame carry-in / out mechanism lifting cylinder, and the empty cast-frame W and the filling frame 17 are placed on the upper-cast-frame pattern carrier 9A.
  • the cast-in / out conveyor 15 is opened by the opening / closing means (not shown), and the state shown in FIG. 9 is obtained.
  • the cast-frame carry-in / out conveyor 15 is lifted by the cast-frame carry-in / out mechanism elevating cylinder (not shown) to the state shown in FIG. Then, the above operation is repeated.
  • the sand supply port 25b is closed and the sand hopper 22a is sealed, and then compressed from the air ejection chamber 26 attached to the inner surface of the sand hopper 22a. Ayer is erupted. For this reason, sand adhesion to the inner wall surface of the sand hopper 22a can be prevented. Further, since the compressed air is ejected from the air ejection chamber 26 in a state where the upper end of the sand hopper 22a is not opened and the sand hopper 22a is sealed, the consumption of the used air can be reduced.
  • the openable louver gate 24 is opened, the molding sand S is filled into the molding space. At this time, the molding sand S is preliminarily compressed by the compression air ejected from the air ejection chamber 26. There is also an effect.
  • the sand filling means 22 is disposed outside the base 1 and the squeeze means 20 is disposed on the base 1 side (specifically, inside the cast-in / out mechanism). There is no need to run the filling means 22 and the squeeze means 20. For this reason, a mechanism for running the sand filling means 22 and the squeeze means 20 is not necessary, and the structure of the apparatus can be simplified.
  • the pattern carrier (9A in FIG. 1), the casting frame W, and the filling frame 17 are moved up and down by the pattern carrier lifting means 21 on the outside of the base 1, but the present invention is limited to this.
  • the sand filling means 22 may be raised and lowered without raising and lowering the pattern carrier, the casting frame W and the filling frame 17.
  • the sand filling means 22 by lowering the sand filling means 22, the lower surface of the sand hopper 22 a is brought into contact with the upper surface of the filling frame 17 carried out of the base 1 to form the molding space.
  • a lifting cylinder may be connected to the sand filling means 22.
  • a large number of squeeze feet 20b are used as the squeeze member.
  • the present invention is not limited to this.
  • a single squeeze plate may be used as the squeeze member.
  • the number of cylinders for raising and lowering the squeeze plate may be one or more.
  • the porous body 26b is manufactured by sintering ultrahigh molecular weight polyethylene, but is not limited to this, and the porous body 26b is a plate-like material. Further, a plurality of holes (for example, round holes of ⁇ 1 mm to ⁇ 2 mm) may be perforated.
  • the cast-in / out conveyor 15 that can be opened and closed is moved up and down.
  • the present invention is not limited to this, and the cast-in / out conveyor 15 does not move up and down. 7 may be fixed.
  • the empty cast-in frame W is loaded onto the rollers 15c of the cast-in / out conveyor 15, and the cast-in frame is immediately loaded.
  • the delivery conveyor 15 can be lowered to place the empty casting frame W and the filling frame 17 on the pattern carriers 9 and 9A. This is preferable because the cycle time of the mold making apparatus can be shortened.
  • the air supply valve 28 communicated with the sand filling means 22 is opened, thereby causing the air flow pressurization.
  • the pre-compression of the foundry sand S is performed, the pre-compression of the foundry sand S by the air flow pressurization is not essential and may be omitted. However, it is preferable to perform pre-compression of the foundry sand S by air flow pressurization because the filling density of the foundry sand S near the pattern plates 10 and 10A is improved.
  • a plurality of filling frame raising and lowering cylinders 101 b are mounted on the lower part of the arm 101 a in the openable and closable casting frame loading and unloading conveyor 101 as the casting frame loading and unloading mechanism.
  • a filling frame placing member 101c is connected to the tip of the filling frame raising / lowering cylinder 101b.
  • a plurality (four in this embodiment) of positioning pins 101d are fixed on the top of the filling frame placing member 101c.
  • the fill frame placing member 101c When the fill frame 102 is placed on the fill frame placing member 101c, the fill frame placing member 101c and the fill frame 102 are positioned by the positioning pins 101d.
  • the upper end of the arm 101a is rotatably connected to the lower end of the upper frame 7.
  • the cast-in / out conveyor 101 does not move up and down.
  • a plurality of downward cylinders 103 are disposed above both ends of the filling frame 102, and the downward cylinders 103 are attached to the upper frame 7.
  • a head member 104 is connected to the tip of the downward cylinder 103.
  • squeeze means 105 is disposed inside the cast-in / out conveyor 101.
  • the squeeze means 105 includes a large number of double-rod cylinders (hydraulic cylinders in this embodiment) 105a, a squeeze foot 105b as a squeeze member connected to the tip of the cylinder 105a, and a support 105c that supports the cylinder 105a. And is composed of.
  • the support 105c is fixed to the upper frame 7. Further, as shown in FIG. 21, in the double rod-shaped cylinders 105a, the upper hydraulic chambers 105d are communicated with each other via the upper communication passage 105e, and the lower hydraulic chambers 105f are respectively communicated with the lower communication passage. It communicates via 105g.
  • rod height positioning means 106 for determining the height position of the piston rod 105h of the multiple cylinders 105a is disposed above the squeeze means 105.
  • the rod height positioning means 106 includes a positioning member elevating cylinder 106a attached to the upper end of the upper frame 7, and a flat plate positioning member 106b connected to the tip of the positioning member elevating cylinder 106a. Yes. The positioning member 106b and the piston rod 105h are not connected.
  • contact members 102a capable of contacting the head member 104 at the tip of the downward cylinder 103 are attached.
  • the air ejection chamber 26 on the inner surface of the sand hopper 22a is attached only to the upper side of the openable louver gate 24.
  • the air ejection chamber 26 It is attached to the lower side of the openable louver gate 24.
  • one of the two pattern carriers 9 and 9A one pattern carrier 9 (hereinafter referred to as a pattern carrier for a lower casting frame) is disposed above the table 3, and the other pattern carrier 9A (hereinafter referred to as an upper casting). (Referred to as a frame pattern carrier) is disposed outside the base 1, and an empty casting frame W and a fill frame 102 are placed on the lower casting frame pattern carrier 9, and the upper casting frame pattern On the carrier 9A, a casting frame W filled with foundry sand S and a filling frame 102 are placed. *
  • the pattern carrier 9 for the lower casting frame, the empty casting frame W and the fill frame 102 are carried out to the outside of the base 1, and the pattern carrier 9A for the upper casting frame, the casting The casting frame W and the filling frame 102 filled with the sand S are carried into the upper part of the table 3 to be in the state shown in FIG.
  • the lifting cylinder 2 is extended to raise the upper casting frame pattern carrier 9A, the casting frame W filled with the casting sand S and the filling frame 102 through the table 3.
  • the positioning member elevating cylinder 106a is contracted to raise the positioning member 106b, thereby separating the upper surface of the piston rod 105h from the lower surface of the positioning member 106b.
  • the pattern carrier lifting cylinder 21 b is extended to raise the lower casting frame pattern carrier 9, the empty casting frame W, and the fill frame 102.
  • the lower surface of the sand hopper 22a is brought into contact with the upper surface of the filling frame 102 carried out of the base 1, and the pattern plate 10, the empty casting frame W, A molding space is formed by the fill frame 102, and the state shown in FIG. 13 is obtained.
  • the release agent is sprayed into the molding space by a release agent spraying means (not shown).
  • the upper surfaces of the contact members 102 a at both ends of the filling frame 102 on the base 1 side are in contact with the lower surface of the head member 104 at the tip of the downward cylinder 103.
  • the upper casting frame pattern carrier 9A, the casting frame W filled with the casting sand S, and the filling frame 102 are further raised through the table 3 so that the casting sand S is primary. Squeeze. Then, the cast-in / out conveyor 101 is closed by an opening / closing means (for example, a cylinder) (not shown), and the state shown in FIG. 14 is obtained.
  • an opening / closing means for example, a cylinder
  • the pattern plate 10A is raised until the upper surface of the frame-shaped frame 11 and the parting surface of the pattern plate 10A in the upper-cast-frame pattern carrier 9A have the same height, and the casting is performed. Secondary squeeze sand S. At this time, the state in which the casting frame W and the fill frame 102 are sandwiched between the frame-shaped frame 11 and the head member 104 is maintained.
  • the molding sand S is filled into the molding space by the sand filling means 22.
  • the sand supply port 25b is closed by the gate member 25c by extending the opening / closing cylinder 25d of the sand supply port opening / closing means 25.
  • a switching valve (not shown) is opened, the compression air is ejected from the porous body 26b through the hollow chamber 26a.
  • the plurality of pivot shafts 24a in the openable louver gate 24 are normally rotated by a gate opening / closing cylinder (not shown), and the plurality of gate plates 24b are changed from the horizontal state to the vertical state (louver gate 24 opening).
  • the molding sand S in the sand hopper 22a is filled in the molding space, and the state shown in FIG. 15 is obtained. It should be noted that while the molding sand S is being filled into the molding space, the compressed air is continuously ejected from the porous body 26b, and the compressed air is provided in a vent hole (not shown) provided in the pattern plate 10 or the filling frame 102. The air is exhausted through a vent hole (not shown) provided on the side surface of the main body.
  • the lifting cylinder 2 is further extended to operate the casting carrier W filled with the pattern carrier 9A for the upper casting frame and the casting sand S via the table 3.
  • the filling frame 102 is further raised to tertiary-squeeze the foundry sand S, and the state shown in FIG. 16 is obtained.
  • an unillustrated exhaust valve communicated with the casing 25a is opened, and the compressed air remaining in the sand hopper 22a is exhausted.
  • the pattern plate 10A in the upper cast frame pattern carrier 9A is lowered and removed.
  • the state in which the casting frame W and the filling frame 102 are sandwiched between the frame-like frame 11 and the head member 104 is maintained, and the frame-like frame 11, the casting frame W, and the filling frame 102 do not move in the vertical direction. .
  • the pattern plate 10A is lowered by a predetermined height (30 mm in this embodiment), so that the die is removed.
  • the pattern carrier elevating cylinder 21 b is contracted to lower the pattern carrier 9 for the lower casting frame, the casting frame W, and the filling frame 102. Thereby, the upper surface of the filling frame 102 and the lower surface of the sand hopper 22a are separated from each other, and the state shown in FIG. 17 is obtained.
  • the upper casting frame pattern carrier 9A, the casting frame W, and the filling frame 102 are lowered by contracting the lifting cylinder 2. Then, the casting frame W is placed on the roller 101e. At this time, as the filling frame 102 is lowered, the downward cylinder 103 is also extended. Then, the frame-shaped frame lifting cylinder 12 is contracted at the lower end of the table 3 to lower the frame-shaped frame 11.
  • the plurality of pivot shafts 24 a in the openable louver gate 24 are reversely rotated by a gate opening / closing cylinder (not shown), so that the plurality of gate plates 24 b are changed from a vertical state to a horizontal state (louver gate 24 Close).
  • the sand supply port 25b is opened by contracting the open / close cylinder 25d of the sand supply port opening / closing means 25.
  • the foundry sand S is supplied into the sand hopper 22a through the sand supply port 25b by a not-shown foundry sand supply means (for example, a belt feeder) to obtain the state shown in FIG.
  • the filling frame 102 is raised through the filling frame placing member 101c and the positioning pins 101d. At this time, as the filling frame 102 is raised, the downward cylinder 103 is also contracted.
  • all the many cylinders 105a are operated so that the piston rod 105h is lowered, and all the squeeze feet 105b are lowered to the lower end. Thereafter, the positioning member elevating cylinder 106a is extended to lower the positioning member 106b to the lower end. Thereafter, all the multiple cylinders 105a are operated so that the piston rods 105h are raised, and the upper surfaces of all the piston rods 105h are brought into contact with the lower surfaces of the positioning members 106b. In this way, all of the multiple cylinders 105a are stopped at a position that is half the full stroke, that is, at an intermediate position, and the state shown in FIG. 19 is obtained.
  • the cast frame W is carried out by the cast-in / out conveyor 101, and the empty cast frame W is carried into a position between the filling frame 102 and the upper-cast-frame pattern carrier 9A.
  • the elevating cylinder 2 is extended to place the empty casting frame W on the upper casting frame pattern carrier 9A, and the casting frame W is slightly lifted from the roller 101e.
  • the filling frame raising / lowering cylinder 101b is contracted to lower the filling frame 102 and place it on the empty casting frame W, and the state shown in FIG. 20 is obtained.
  • the downward cylinder 103 is also extended. Further, the positioning of the filling frame placing member 101c and the filling frame 102 by the positioning pins 101d is released.
  • the cast-in / out conveyor 101 is opened by opening / closing means (not shown). Thereafter, the elevating cylinder 2 is contracted to lower the empty casting frame W and the fill frame 102 to the state shown in FIG. Then, the above operation is repeated.
  • the squeeze means 105 operates as follows during the above-described primary squeeze, secondary squeeze, and tertiary squeeze. As shown in FIG. 22, the oil in the upper hydraulic chamber 105d of the cylinder 105a whose squeeze foot 105b has been quickly pushed upward flows into the upper hydraulic chamber 105d of the cylinder 105a in the vicinity thereof, and the squeeze foot of the cylinder 105a in the vicinity thereof. 105b is pushed down. By performing such an operation, the back surface of the mold can be squeezed with a uniform pressure.
  • oil is supplied to the upper hydraulic chambers 105d of all the cylinders 105a at the time of the tertiary squeeze or after the tertiary squeeze, and the back of the mold is squeezed by the squeeze feet 105b of all the cylinders 105a. You may do it.
  • the rod height positioning means 106 in the second embodiment described above is configured to raise and lower the flat plate-like positioning member 106b by the positioning member raising / lowering cylinder 106a.
  • the flat positioning member may be moved horizontally by a traverse cylinder).
  • a through hole through which each piston rod 105h can pass is formed in the positioning member.
  • the positioning member is connected to the tip of the traversing cylinder so that the positioning member can be moved horizontally.
  • the center of each piston rod 105h coincides with the center of the through hole, and the piston rod 105h can freely pass through the through hole.
  • each piston rod 105h is disengaged from the through hole. Therefore, if all the piston rods 105h are lowered and all the piston rods 105h are lifted after the traversing cylinders are contracted, the upper surfaces of all the piston rods 105h are the lower surfaces of the positioning members (places without the through holes). Abut. In this way, as in the second embodiment described above, all of the multiple cylinders 105a can be stopped at a position that is half the full stroke, that is, at an intermediate position.
  • the pattern carrier (9A in FIG. 11), the casting frame W, and the filling frame 102 are moved up and down by the pattern carrier lifting means 21 on the outside of the base 1, but this is not limitative.
  • the sand filling means 22 may be raised and lowered without raising and lowering the pattern carrier, the casting frame W and the filling frame 102.
  • the sand filling means 22 by lowering the sand filling means 22, the lower surface of the sand hopper 22 a is brought into contact with the upper surface of the filling frame 102 carried out of the base 1 to form the molding space.
  • a lifting cylinder may be connected to the sand filling means 22.
  • the porous body 26b is manufactured by sintering ultrahigh molecular weight polyethylene, but is not limited to this, and the porous body 26b is a plate.
  • a large number of holes (for example, round holes of ⁇ 1 mm to ⁇ 2 mm) may be perforated in the material.
  • the cast-frame carrying in / out conveyor 101 does not raise / lower, it is not limited to this, You may make it raise this casting-frame carrying in / out conveyor 101. .
  • the air supply valve 28 communicated with the sand filling means 22 is opened to open the air flow control.
  • the pre-compression of the foundry sand S by the pressure is performed, the pre-compression of the foundry sand S by the air pressure is not essential and may be omitted.
  • the upper cast frame pattern carrier 9A, the casting frame W filled with the foundry sand S, and the fill frame 17 and 102 are raised, the upper surface of the frame-like frame 11 of the upper cast frame pattern carrier 9A is projected from the parting surface of the pattern plate 10A.
  • the present invention is not limited to this. After making the upper surface of the frame-shaped frame 11 in the pattern carrier 9A for casting frames project from the parting surface of the pattern plate 10A, the pattern carrier 9A for upper casting frames, the casting frame W filled with foundry sand S, and the fill frame 17 and 102 may be raised.
  • the process of raising the upper cast frame pattern carrier 9A, the casting frame W filled with the casting sand S and the filling frames 17 and 102, and the upper surface of the frame-like frame 11 in the upper cast frame pattern carrier 9A are arranged on the pattern plate 10A. And the step of projecting from the parting plane may be performed simultaneously.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)

Abstract

L'invention concerne un dispositif de moulage et un procédé de moulage de moule qui permet d'empêcher le sable de se coller à la paroi intérieure d'une trémie à sable et de simplifier la structure du dispositif. Après l'utilisation d'un moyen de remplissage de sable pour remplir un espace de moulage de sable de moulage, l'espace de moulage étant formé d'un cadre de moulage, d'un cadre superposition, et d'une plaque à motif qui est montée sur un support de motif, le sable de moulage qui a rempli l'espace de moulage est pressé à l'aide d'un moyen de pressage, et le moule est formé. Le moyen de remplissage de sable est équipé d'une trémie à sable qui est située au-dessus du cadre de moulage et du cadre de superposition, et qui stocke le sable de moulage, d'une grille d'aérateur à lames ouvert/fermé qui est disposée à l'intérieur de la trémie à sable, d'un moyen ouvert/fermé d'amenée de sable qui est situé dans la partie supérieure de la trémie à sable, et qui ouvre et ferme un orifice d'amenée de sable pour amener le sable de moulage à l'intérieur de la trémie à sable, et d'une chambre à jet d'air qui est montée sur la surface intérieure de la trémie à sable.
PCT/JP2011/052641 2010-08-09 2011-02-08 Dispositif et procédé de moulage de moule WO2011049249A2 (fr)

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CN201180016757.4A CN102834200B (zh) 2010-08-09 2011-02-08 铸型造型装置以及铸型造型方法
EP11715147.2A EP2604362A4 (fr) 2010-08-09 2011-02-08 Dispositif et procédé de moulage de moule

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JP2010178364 2010-08-09
JP2010-178364 2010-08-09
JP2010231158A JP5626639B2 (ja) 2010-08-09 2010-10-14 鋳型造型方法
JP2010-231158 2010-10-14

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WO2011049249A2 true WO2011049249A2 (fr) 2011-04-28
WO2011049249A3 WO2011049249A3 (fr) 2011-06-23

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JP6468242B2 (ja) 2016-05-17 2019-02-13 新東工業株式会社 抜枠造型機
CN105750510A (zh) * 2016-05-20 2016-07-13 许云东 一种用于制作湿型砂铸型的水平有箱造型机
CN106734977B (zh) * 2016-12-25 2018-07-17 重庆市永川区泰兴机械厂 防堵塞式模具加工装置
CN106623813A (zh) * 2016-12-28 2017-05-10 池州恒和精密机械有限公司 一种空心铸件的砂型加工装置
CN106890952B (zh) * 2017-04-25 2018-12-21 安徽新宁装备股份有限公司 一种水平无箱造型机下砂箱
CN107537982A (zh) * 2017-09-11 2018-01-05 芜湖市云峰铸造有限责任公司 一种汽车铸件用的造型平台
TW202000335A (zh) 2018-06-15 2020-01-01 日商新東工業股份有限公司 鑄模造型裝置及鑄模造型裝置之控制方法
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CN109014068B (zh) * 2018-08-20 2024-05-14 苏州苏铸成套装备制造有限公司 一种双工位双面压实造型机
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TW201210716A (en) 2012-03-16
JP2012055968A (ja) 2012-03-22
CN102834200A (zh) 2012-12-19
CN102834200B (zh) 2014-12-03
EP2604362A4 (fr) 2018-01-03
EP2604362A2 (fr) 2013-06-19
JP5626639B2 (ja) 2014-11-19
WO2011049249A3 (fr) 2011-06-23

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