WO2013108449A1 - 抜枠鋳型造型装置、抜枠鋳型造型方法及び砂受け装置 - Google Patents

抜枠鋳型造型装置、抜枠鋳型造型方法及び砂受け装置 Download PDF

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Publication number
WO2013108449A1
WO2013108449A1 PCT/JP2012/076500 JP2012076500W WO2013108449A1 WO 2013108449 A1 WO2013108449 A1 WO 2013108449A1 JP 2012076500 W JP2012076500 W JP 2012076500W WO 2013108449 A1 WO2013108449 A1 WO 2013108449A1
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WO
WIPO (PCT)
Prior art keywords
mold
plate
sand
frame
lower casting
Prior art date
Application number
PCT/JP2012/076500
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English (en)
French (fr)
Japanese (ja)
Inventor
修司 高須
斗紀也 寺部
英彦 大矢
宮崎　寛之
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.)
Filing date
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 PL12866350T priority Critical patent/PL2777844T3/pl
Priority to JP2013554182A priority patent/JP6036705B2/ja
Priority to CN201280055670.2A priority patent/CN103945957B/zh
Priority to EP12866350.7A priority patent/EP2777844B1/de
Publication of WO2013108449A1 publication Critical patent/WO2013108449A1/ja

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C11/00—Moulding machines characterised by the relative arrangement of the parts of same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C11/00—Moulding machines characterised by the relative arrangement of the parts of same
    • B22C11/02—Machines in which the moulds are moved during a cycle of successive operations
    • B22C11/04—Machines in which the moulds are moved during a cycle of successive operations by a horizontal rotary table or carrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C11/00—Moulding machines characterised by the relative arrangement of the parts of same
    • B22C11/10—Moulding machines characterised by the relative arrangement of the parts of same with one or more flasks forming part of the machine, from which only the sand moulds made by compacting are removed
    • 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
    • B22C9/108—Installation of cores

Definitions

  • the present invention relates to a punching mold making apparatus, a punching mold forming method, and a sand receiving apparatus for forming a superposed upper and lower mold without a casting frame.
  • Patent Document 1 Conventionally, there is a method and apparatus described in Patent Document 1, for example, as a punching mold forming method and apparatus for forming an upper and lower mold without a casting frame.
  • the mold making apparatus described in Patent Document 1 includes two pairs of upper and lower casting frames, a match plate, squeezing means, means for rotating the squeezing means, means for supplying sand, and two pairs of upper and lower casting frames. And means for alternately turning between the two stations.
  • the mold molding method using this mold molding apparatus can simultaneously perform the process of molding a mold in a pair of molds and the process of extracting the mold from a pair of casting frames containing a mold that has already been molded. There is an advantage that molding can be performed efficiently.
  • a punching mold making apparatus a pair of upper and lower casting frames each composed of an upper casting frame and a lower casting frame, and turning the two pairs of upper and lower casting frames to form a molding station and a mold extraction station.
  • a casting frame turning mechanism that is moved into two stations, a match plate that can be inserted and removed between the upper and lower casting frames located at the molding station among the two pairs of upper and lower casting frames, A pair of squeeze plates that are inserted into the respective openings of the upper and lower casting frames sandwiching the match plate carried in between to form an upper molding space and a lower molding space, and sand in each of the upper molding space and the lower molding space
  • a sand tank having a pair of sand introduction nozzles, a squeeze mechanism for compressing the mold sand filled in the upper molding space and the lower molding space, and the mold extraction station.
  • the method for making a punched frame mold includes moving an upper and lower casting frame made of an upper casting frame and a lower casting frame, which are located in a molding station and face each other in the vertical direction, in a close proximity to each other.
  • the upper and lower casting frames are swung so as to move the upper and lower casting frames to the mold extraction station, and the molds in the upper casting frame of the upper and lower casting frames moved to the mold extraction station are aligned by the hole forming mechanism.
  • a step of drilling a plurality of holes and a step of overlapping the upper and lower casting frames on which the molds are formed by moving the upper and lower casting frames in directions close to each other, and entry into the superimposed upper and lower casting frames are possible.
  • a punched mold making method which is a mold receiving apparatus for forming a mold or a sand receiving apparatus provided in a mold forming line having a mold forming apparatus for forming a mold, and is rotatable.
  • a first plate-like member provided on the first plate-like member, a direction protruding from the front end side of the first plate-like member, and a direction opposite thereto, wherein the first plate-like member is at a predetermined rotation position
  • the first plate member is the second plate Together member is a state as vertically oriented, the second plate-like member is a state of being pulled to the first plate member.
  • a blank frame mold making apparatus capable of efficiently casting a mold capable of improving casting quality in a short time.
  • FIG. 1 It is a front view of the mold making apparatus which concerns on one Embodiment. It is a top view of this mold making apparatus. It is a side view of this mold making apparatus. It is a figure which shows the state of the original position of this mold making apparatus.
  • (A) is a front view.
  • (B) is a view on arrow A4-A4. It is a figure which shows this mold making apparatus of the state which rotated the rotating frame from FIG. (A) is a front view.
  • (B) is an A5-A5 arrow view. It is a figure which shows this mold making apparatus of the state which inserted the match plate between the upper and lower casting frames from FIG. (A) is a front view.
  • (B) is a view on arrow A6-A6.
  • FIG. 8 is a front view showing the mold making apparatus in a state where the upper and lower casting frames are rotated from FIG. 7 and faced in the horizontal direction. It is a front view which shows this mold making apparatus of the state filled with sand in the up-and-down casting frame from FIG.
  • FIG. 10 is a front view showing the mold making apparatus in a state where the mold sand is squeezed from FIG. 9. It is a figure which shows this mold making apparatus of the state which rotated the upper and lower casting frame from FIG.
  • FIG. 10 is a front view.
  • FIG. 12 is a view showing the mold making apparatus in a state where the upper and lower molds are removed from the match plate from FIG. 11.
  • (A) is a front view.
  • (B) is an A12-A12 arrow view. It is a figure which shows this mold making apparatus of the state which rotated the rotating frame from FIG. 12 (state which returned to the original position), ie, the state where the casting frame which has a casting_mold
  • (A) is a front view.
  • (B) is a view on arrow A13-A13.
  • FIG. (A) It is a figure which shows this mold making apparatus of the state in which the vent hole was formed from FIG. (A) is a front view.
  • (B) is a view on arrow B14-B14. It is a figure which shows this mold making apparatus of the state by which the core set was performed from FIG. (A) is a front view.
  • (B) is a view on arrow B15-B15. It is a figure for demonstrating the hole formation mechanism and sand receiving mechanism used at the time of the vent hole formation shown in FIG. (A) is a figure which shows the standby state (before drilling and after drilling) of a sand receiving mechanism.
  • (B) is a figure which shows the sand receiving state (at the time of drilling) of a sand receiving mechanism.
  • (C) is a figure which shows the outline
  • (D) is a C16-C16 arrow view. It is a figure which shows this mold making apparatus of the state (frame alignment) in which the casting frame which has a casting_mold
  • (A) is a front view.
  • (B) is a view on arrow B17-B17.
  • FIG. 18 is a view showing the mold making apparatus in a state where the upper and lower molds are started to be pushed out by the pushing member when the mold is drawn out from FIG. 17.
  • (A) is a front view.
  • (B) is a view on arrow B18-B18.
  • FIG. 19 is a view showing the mold making apparatus in a state in which a mold whose holding power is lost due to a casting frame is lowered by a table by being pushed downward by an extruding member in FIG. 18 when the mold is extracted. is there.
  • (A) is a front view.
  • (B) is a view on arrow B19-B19.
  • FIG. 20 is a view showing the mold making apparatus in a state where the mold is lowered by the table and moved so that the upper and lower casting frames are in their original positions from FIG. 19.
  • (A) is a front view.
  • (B) is a B20-B20 arrow view.
  • FIG. 21 is a diagram showing the mold making apparatus in a state where the operation of extracting the mold is completed from FIG. 20.
  • FIG. 27 is a side cross-sectional view of the hole forming mechanism constituting the mold making apparatus, showing a cross-section from the direction corresponding to FIG. 3, and is a view taken in the direction of arrows X1-X1 shown in FIGS.
  • FIG. 27 is a side sectional view showing a section of the hole forming mechanism from a direction corresponding to FIG.
  • FIG. 25 is a cross-sectional view showing a state where a drill member is lowered and a gas vent hole is formed by the hole forming mechanism with respect to the state shown in FIG. 24.
  • FIG. 25 is an X3-X3 arrow view shown in FIGS. 23 and 24. It is sectional drawing which shows the positional relationship of the up-down direction at the time of changing the position in the horizontal surface of the drill member of this hole formation mechanism. It is a figure explaining the sand receiving mechanism which comprises a mold making apparatus.
  • A) is a front view of a sand receiving mechanism.
  • (B) is a side view.
  • (C) is a plan view.
  • (A) is a figure which shows the standby state (before drilling and after drilling) of a sand receiving mechanism.
  • (B) is a figure which shows the sand receiving state (at the time of drilling) of a sand receiving mechanism. It is a flowchart of the casting_mold
  • FIGS. 4 to 22 are front and cross-sectional schematic diagrams showing states of respective steps for performing mold making by the mold making apparatus 1.
  • FIG. 4 to 22 are schematic views in which the base 22 and details are omitted for explaining the operation.
  • the xy direction is the horizontal direction
  • the z direction is the vertical direction (up and down direction).
  • the mold making apparatus 1 includes two pairs of upper and lower casting frames 4 each comprising an upper casting frame 2 and a lower casting frame 3, a casting frame turning mechanism 5, a match plate 6, Squeeze plates 7 and 8, a sand tank 9, a rotation mechanism 10, a squeeze mechanism 11, an upper and lower casting frame moving mechanism 14, an extraction mechanism 15, and a hole forming mechanism 80.
  • the upper and lower casting frames 4 are provided in two pairs, with the upper casting frame 2 and the lower casting frame 3 as a pair.
  • the upper casting frame 2 and the lower casting frame 3 are arranged to face each other in the vertical direction (z direction).
  • the two upper and lower cast frames 4 are arranged side by side along the x direction.
  • the upper casting frame 2 and the lower casting frame 3 each have an opening that penetrates vertically.
  • Sand inlets 2 a and 3 a for supplying mold sand to the upper casting frame 2 and the lower casting frame 3 are provided on the respective side walls of the upper casting frame 2 and the lower casting frame 3.
  • the side wall is a wall formed in a direction (for example, the x direction) perpendicular to the opposing direction of the upper casting frame 2 and the lower casting frame 3.
  • the casting frame turning mechanism 5 turns the two pairs of upper and lower casting frames 4 and moves them into two stations including a molding station and a mold extraction station.
  • the casting frame turning mechanism 5 has two upper and lower casting frames 4 centered on a rotation axis M1 that passes between two upper and lower casting frames 4 arranged in parallel in the horizontal direction (x direction) and extends in the vertical direction (z direction).
  • the casting frame turning mechanism 5 has two upper and lower castings centered on the rotation axis M1 that extends between the molding station and the mold extraction station arranged in parallel in the horizontal direction (x direction) and extends in the vertical direction (z direction).
  • the frame 4 is turned.
  • the molding station is a position where the mold is molded by compressing the mold sand in the molding space.
  • the mold extraction station is a position where the mold is extracted from the casting frame. That is, the casting frame turning mechanism 5 is in a horizontal state in which a pair of upper and lower casting frames 2 and 3 are arranged in a line up and down one by one between a squeeze mechanism 11 in which the pair of upper and lower casting frames 2 and 3 are in a horizontal state and an extraction mechanism 15 for extracting a mold.
  • This is a mechanism for turning two pairs of upper and lower casting frames intermittently.
  • the cast-frame turning mechanism 5 can latch the upper cast-frame 2 and can raise / lower it along az direction.
  • the match plate 6 can enter and exit between the upper and lower casting frames 4 located in the molding station among the two pairs of upper and lower casting frames.
  • the match plate 6 can be entered and exited by a carry-in / out mechanism 21. Models are provided on both sides of the match plate 6 (FIGS. 4 to 6).
  • a pair of squeeze plates 7 and 8 are inserted into respective openings of the upper and lower casting frames 4 sandwiching the match plate 6 carried between the upper and lower casting frames 4 to form an upper molding space and a lower molding space (see FIG. 7 to 9).
  • the squeeze plate 7 for the upper casting frame 2 can enter and exit the upper opening that is not the lower opening in which the match plate 6 is located, in the opening of the upper casting frame 2.
  • the squeeze plate 8 for the lower casting frame 3 can be put into and out of the lower opening that is not the upper opening in which the match plate 6 is located in the opening of the lower casting frame 3.
  • the sand tank 9 has a pair of sand introduction nozzles 9a and 9b at its lower end.
  • the pair of sand introduction nozzles 9a and 9b is formed downward and fills each of the upper molding space and the lower molding space with sand. Mold sand is accommodated in the sand tank 9, and the mold sand is supplied into the upper and lower casting frames 4 from a pair of sand introduction nozzles 9a and 9b (FIG. 9).
  • the rotation mechanism 10 rotates the upper and lower casting frames 4 forming the upper molding space and the lower molding space in the direction around the axis with the horizontal direction (y direction) as an axis, and the sand introduction ports 2a and 3a are A pair of sand introduction nozzles 9a and 9b are positioned so as to be capable of sand filling. Specifically, for example, the sand introduction ports 2a and 3a and the pair of sand introduction nozzles 9a and 9b are brought into contact with each other so that sand can be filled.
  • an elastic seal member may be provided on the contact surfaces of the sand introduction ports 2a and 3a, and the seal member prevents sand from spilling from the contact surfaces.
  • the rotation mechanism 10 is a lateral cylinder extending in the x direction, and rotates the rotation frame 24 attached to the tip of the rod 10a in the R1 direction by extending and contracting the rod 10a (FIGS. 7 and 8). . Then, the rotation mechanism 10 allows the squeeze mechanism 11, the upper and lower cast frames 4, the match plate 6, the pair of squeeze plates 7, 8 and the like held in the same direction as the R1 direction through the rotation frame 24. Rotate in the opposite direction.
  • the squeeze mechanism 11 moves the pair of squeeze plates 7 and 8 toward the match plate 6 so as to compress the mold sand that is rotated by the rotation mechanism 10 and filled in the upper molding space and the lower molding space (FIG. 10). . Further, the squeeze mechanism 11 moves the pair of squeeze plates 7 and 8 in the direction of approaching and separating from each other when forming the above-described upper molding space and lower molding space.
  • the squeeze mechanism 11 is rotatable between a posture in which the upper and lower casting frames 4 sandwiching the match plate 6 are opposed in the vertical direction and a posture opposed in the horizontal direction.
  • “Upper and lower casting frames 4 face each other in the vertical direction” means that the upper casting frame 2 and the lower casting frame 3 are in a horizontal state. Further, the fact that the upper and lower casting frames 4 are opposed to each other in the horizontal direction means that the upper casting frame 2 and the lower casting frame 3 are in a vertical state.
  • the squeeze mechanism 11 is attached to the rotating frame 24.
  • the rotating frame 24 is rotatable with respect to a frame-like base 22 assembled in a substantially rectangular parallelepiped shape having a space for holding the above-described configuration inside.
  • the support shaft 23 is provided on the base 22 and is disposed so as to extend in the horizontal direction (y direction).
  • the rotation mechanism 10 is, for example, a cylinder mechanism that is disposed sideways so that the axis is in the x direction.
  • the rotation mechanism 10 is joined to the upper portion of the rotation frame 24 by a support shaft 23.
  • the rotation mechanism 10 includes a rod 10a.
  • the tip of the rod 10a is joined to the upper part of the rotating frame 24 to which the squeeze mechanism 11 is attached.
  • the upper and lower formwork moving mechanism 14 moves the upper and lower formwork 4 in a direction to separate them from each other so as to separate the match plate 6 from the molds 12 and 13 (for example, FIG. 9) formed in the upper and lower formwork 4. Further, the upper and lower casting frame moving mechanism 14 also moves the upper and lower casting frames 4 in the direction in which they are close to each other when the match plate 6 is sandwiched as described above.
  • the upper and lower formwork moving mechanism 14 includes an upward cylinder 34, a downward cylinder 35, an upward cylinder 49, and the like which will be described later.
  • the extraction mechanism 15 is provided at a mold extraction station.
  • the extraction mechanism 15 is formed in the upper and lower casting frames 4 when the upper and lower casting frames 4 having the molds 12 and 13 separated from the match plate 6 are moved to the casting mold extraction station by the casting frame turning mechanism 5.
  • the upper mold 12 and the lower mold 13 are superposed and extracted from the upper and lower casting frames 4.
  • the hole forming mechanism 80 is provided at a mold extraction station, and one or a plurality of degassing holes 12a (“gas” is formed in the mold 12 in the upper cast frame 2 among the upper and lower cast frames 4 moved to the position. This is also referred to as a “hole” (FIG. 25).
  • the lower casting frame 3 is slidably bridged between a pair of connecting rods 25 provided downward from the upper casting frame 2, and the lower end of the connecting rod 25. Hung in position.
  • the connecting rod 25 that connects the upper casting frame 2 and the lower casting frame 3 is provided on a side surface of the upper and lower casting frames 4 at a position before and after the turning direction (position facing the y direction).
  • the upper casting frame 2 is provided with a pair of engaging recesses 2b located on the front and rear side surfaces (side surfaces facing the y direction) in the turning direction, 48 is engaged with the protrusion 48b.
  • the lower casting frame 3 is provided with a pair of engaging recesses 3b located on the side surfaces before and after turning (side surfaces facing the y direction), and is engaged with a protrusion 50b of the lower latch member 50 described later. .
  • the carry-in / out mechanism 21 for entering and exiting the match plate 6 includes a rotating cylinder 26 attached to the rotating frame 24, a cantilevered arm 27 connected to the rotating cylinder 26, It has a cylinder 28 attached to the tip and a suspension carriage 29 on which the match plate 6 is placed and which can reciprocate in the entry / exit direction.
  • the suspension carriage 29 When the arm 27 is rotated in the direction R3 in FIG. 5 by the operation of the rotating cylinder 26, the suspension carriage 29 is placed in a horizontal state on the upper casting frame 2 via a rail (not shown) provided on the casting frame and the rotating frame 24. And the match plate 6 is carried in between the lower casting frames 3 (FIG. 6).
  • the suspension carriage 29 carries out the match plate 6 from between the upper and lower casting frames.
  • the cylinder 27 attached to the tip of the arm 27 is expanded and contracted to connect the arm 27 to the suspension carriage 29 or to release the connected state. When the connected state is released, the match plate 6 can be exchanged.
  • the squeeze mechanism 11 is rotatably supported by the support shaft 23 attached to the center of the upper portion of the base 22 via the rotation frame 24.
  • the squeeze mechanism 11 is supported so as to be able to rotate forward and backward in a vertical plane (in the xz plane).
  • An upward cylinder 34 and a downward cylinder 35 are attached to the right side surface of the rotating frame 24 on the upper side and the lower side, respectively.
  • the right side surface of the rotating frame 24 is the right side surface indicated by the arrows A4-A4 in FIG. 4A, and means the side surface on the center side of the casting frame turning mechanism 5.
  • the front-rear direction is a direction connecting the front and rear of the turning direction, and is a tangential direction (y direction) in the molding station.
  • the upper cylinder 34 is provided with an upper lifting frame 32.
  • the downward cylinder 35 is provided with a lower lifting frame 33.
  • the upper and lower elevating frames 32 and 33 are configured to approach and separate from each other by the expansion and contraction operation of the upward cylinder 34 and the downward cylinder 35 attached to the rotating frame 24.
  • a cylinder 36 for advancing and retracting the upper squeeze plate 7 is attached to the upper elevating frame 32.
  • a cylinder 37 for advancing and retracting the lower squeeze plate 8 is attached to the lower lift frame 33.
  • the cylinder 36 and the cylinder 37 may be composed of a plurality of cylinders.
  • the size of the horizontal plane of the squeeze plates 7 and 8 connected via the upper elevating frame 32 and the lower elevating frame 33 has such a size that the upper casting frame 2 and the lower casting frame 3 can be pushed respectively. Yes.
  • the sand tank 9 functions as a mechanism for filling the sand, and is mounted on the left side of the ceiling portion of the base 22 as shown in FIGS. 1 and 4, and further, a pair of sand introduction nozzles 9a, It has a bifurcated shape with 9b. Further, the sand tank 9 is manufactured by sintering ultra-high molecular weight polyethylene, for example, on the inner surface, and is provided with a porous body as a filter part having a large number of holes of about 10 ⁇ m to 80 ⁇ m, for example, and air is ejected from the holes.
  • aeration tank in which sand is filled while being floated and fluidized, and mold sand is filled into the upper casting frame 2 and the lower casting frame 3 independently with low-pressure compressed air (aeration filling).
  • the pressure of the low pressure compressed air is preferably 0.05 to 0.18 MPa.
  • the extraction mechanism 15 is capable of entering from the upper side into the upper and lower horizontal casting frames 4 that are overlapped vertically, and has an extrusion member 38 that pushes the upper and lower molds in the upper and lower casting frames 4 downward.
  • the pushing member 38 is fixed to the lower end of the piston rod of the downward cylinder 39 attached to the ceiling of the base 22.
  • the pushing member 38 moves up and down by the expansion and contraction operation of the cylinder 39.
  • a mold receiving table 40 for receiving the upper and lower molds extracted from the upper and lower casting frames 4 is provided below the pushing member 38 so as to be movable up and down.
  • the table 40 is fixed to the tip of the piston rod of the upward cylinder 41 and moves up and down by the expansion and contraction operation of the cylinder 41.
  • the pushing member 38 lowers the pushing member 38 (FIG. 18) in a state where the upper and lower casting frames 4 are placed on the mold receiving table 40 (FIG. 17). After the pushing member 38 is lowered to the position for pushing the upper mold, the pushing member 38 and the table 40 are lowered, and the molds 12 and 13 are extracted from the upper casting frame 2 and the lower casting mold 3 (FIGS. 18 and 19). .
  • the hole forming mechanism 80 is provided at the mold extraction station, and the upper casting frame 4 is moved to the upper casting frame 4 and moved to the upper casting frame 4.
  • This is a mechanism for making one or a plurality of holes in the mold 12 in the frame 2.
  • the hole forming mechanism 80 has a drill member 82 that forms a hole from the upper side of the upper mold 12.
  • the number of drill members 82 is not limited to one, and a plurality of drill members 82 may be provided.
  • the extraction mechanism 15 is configured such that the upper mold 12 and the lower mold 13 that are superposed on each other by pushing the upper mold 12 superposed on the lower mold 13 downward. Is extruded from the upper and lower casting frames 4.
  • the pushing member 38 is provided with an insertion opening 38a through which the drill member 82 of the hole forming mechanism 80 can be inserted.
  • the hole forming mechanism 80 and the extruding member 38 are configured as described above (the hole forming mechanism 80 is provided inside the extruding member 38), in the mold making apparatus 1 configured as a two-station system, the gas It is possible to arrange a mechanism for punching holes for punching.
  • the extruding member 38 is formed so that the outer periphery 38 b in the horizontal plane (in the xy plane) is shaped along the outer periphery of the upper mold 12.
  • the insertion opening 38a is shaped to extend along a predetermined width from the outer periphery 38b of the pushing member 38.
  • the extruding member 38 is a portion 38c outside the insertion opening 38a and inside the outer periphery 38b of the extruding member 38, so that the upper mold 12 and the lower mold 13 are pushed by pushing the upper mold 12 downward. Pull out from the upper and lower casting frames 4.
  • the extruding member 38 extracts the upper and lower molds 12 and 13 by losing the holding force between the upper casting mold 2 and the lower casting mold 3 at the outer peripheral portions of the upper casting mold 12 and the lower casting mold 13.
  • an appropriate frame can be obtained.
  • the reason why the frame can be properly drawn is the reason why the frame can be properly drawn.
  • the hole forming mechanism 80 includes a drill unit 83 that holds a drill member 82, and a drill unit cylinder 84 as a drill unit drive mechanism that drives the drill unit 83 up and down in a hollow space in the push-out member 38.
  • the drill unit 83 and the drill member 82 held by the drill unit cylinder 84 are driven up and down with respect to the pushing member 38.
  • the drill unit cylinders 84 are provided at two locations so as to sandwich the cylinder 39 for the extruding member 38 (for the frame). This is to drive the drill unit 83 with a good balance.
  • the number of drill unit cylinders is not limited to this, and may be one or four.
  • the number of cylinders 39 is not limited to one, and a plurality of cylinders 39 are provided.
  • a pair of guide rods 99 are provided so as to sandwich the cylinder 39 so that the pushing member 38 can be driven in a balanced manner.
  • the drill unit 83 includes a board member 85 provided with a plurality of mounting holes 85a, and a unit main body 86 that can hold the board member 85 so that the board member 85 can be attached and removed (FIG. 16D). 23, FIG. 24).
  • the unit main body 86 is provided with a roller member 87 so that the board member 85 can slide in the horizontal direction.
  • the unit main body 86 is provided with positioning pins (not shown) for positioning and fixing, and by this positioning pin, the board member 85 that is slid on the roller member 87 and inserted and attached to the unit main body 86 can be fixed. .
  • the drill member 82 can be selectively attached to and detached from any of the attachment holes 85a of the board member 85.
  • the drill member 82 can be separated vertically by a screw structure, and the screw structure of the upper and lower members 82b and 82c of the board member 85 is made in a state where the male screw portion is inserted into the mounting hole 85a of the board member 85. It is possible to attach to the board member 85 by integrating.
  • a conduction branch portion 88 for branching air is provided on the board member 85.
  • the conduction branch portion 88 is connected to the air conduction portion 89 via the air hose 90.
  • the air conduction part 89 is connected to an air supply part provided in the mold making apparatus 1.
  • the conduction branch portion 88 is connected to the drill member 82 via the air hose 91.
  • the conduction branch portion 88 supplies the air supplied to the air conduction portion 89 to each drill member 82.
  • the drill part 82a of the drill member 82 is rotated by the supplied air.
  • the drill unit 83 is lowered by the drill unit cylinder 84, thereby forming the gas vent hole 12a in the upper mold 12 (FIG. 25).
  • the upper mold 12 is connected to the degassing hole 12a connected to the degassing hole 12a together with the mold cavity 12c by a model of the match plate 6 as shown in FIG. A space 12b is formed.
  • an electric drive or hydraulic drive may be used.
  • the hole forming mechanism 80 having the drill unit 83 enables the position of the gas vent hole to be formed to be changed in the horizontal plane (in the xy plane). That is, when changing the position of the gas vent hole to be formed, the drill member 82 may be attached to the mounting hole 85a corresponding to a desired position among the plurality of mounting holes 85a formed in the board member 85. It is also possible to change the number of vent holes.
  • the hole forming mechanism 80 is effective when the match plate is exchanged and the position of the model is changed.
  • work of the drill member 82 can be easily performed by the above structures.
  • the mold making apparatus 1 includes a sand receiving mechanism 100 below the upper casting frame 2 in the same station (mold extraction station) as the hole forming mechanism 80.
  • the sand receiving mechanism 100 receives sand generated by drilling when the hole forming mechanism 80 is drilled and discharges it to the outside of the apparatus.
  • the sand receiving mechanism 100 is configured to be attached to the rotating frame 43, and one sand receiving mechanism 100 is disposed at each station (mold extraction station, molding station), but is not limited thereto. That is, the sand receiving mechanism 100 only needs to function as a sand receiver when it is positioned at least at the mold extraction station. For example, when the sand receiving mechanism 100 is attached to a portion that does not turn together with the casting frame other than the rotating frame 43, the sand receiving mechanism 100 is provided at the mold extraction station. It only has to be done.
  • the sand receiving mechanism 100 includes a first plate-like member 101 that is rotatably provided, and a direction that protrudes from the distal end side of the first plate-like member 101. Y2 and a second plate member 102 provided to be movable in the opposite direction Y2.
  • the second plate-like member 102 is punched by the hole forming mechanism 80 at a position where the second plate-like member 101 protrudes in a protruding direction with respect to the first plate-like member 101 when the first plate-like member 101 is at a predetermined rotation position.
  • This is a sand receiving member for receiving the sand generated by.
  • the first plate member 101 is in a state in which the second plate member 102 faces in the vertical direction. Further, the second plate-like member 102 is pulled into the first plate-like member 101 (FIGS. 16A and 29A).
  • the first plate-like member 101 is inclined with respect to the horizontal direction so that the distal end side is located above the proximal end side.
  • the second plate-like member 102 is protruded from the first plate-like member 101 in the protruding direction Y1 (FIGS. 16B and 29B).
  • the sand receiving mechanism 100 has a first cylinder 103 that rotates the first plate-like member 101 and a second cylinder 104 that drives the second plate-like member 102.
  • the second cylinder 104 drives the second plate-like member 102 so as to pop out and retract the first plate-like member 101.
  • the base end portion of the first plate-like member 101 is a fixed portion 101a for turning center, and the first plate-like member 101 is turnable.
  • the extending member 101b provided extending from the fixed portion 101a has a function of converting the linear motion of the first cylinder 103 into a rotational motion.
  • the tip 103c of the rod 103b of the first cylinder 103 is attached to the tip 101c of the extending member 101b.
  • the first cylinder 103 has a base end side as a fixed portion 103a, and is provided to be rotatable around the fixed portion 103a.
  • the inclination angle ⁇ with respect to the horizontal direction LH is in the range of 5 ° to 45 °. It functions as a sand receiver even when the inclination is smaller than 5 ° or in a horizontal state, but it may spill slightly from the tip side to the lower mold side when discharged to the outside. Can be small. Further, when the inclination is larger than 45 °, the size of the first and second plate-like members 101 and 102 is increased.
  • the inclination angle ⁇ may be 20 ° to 40 °.
  • the second plate member 102 receives the sand generated by the drilling. is there. Then, by driving the rod 103b and the rod 104b in the contracting direction, the first plate-like member 101 is driven so as to face in the vertical direction, and the second plate-like member 102 is moved relative to the first plate-like member 101. Driven in the pull-in direction Y2. Thereby, the sand received on the 2nd plate-shaped member 102 is discharged
  • the sand receiving mechanism 100 is generated by drilling the hole forming mechanism 80, and prevents unnecessary sand from accumulating on the mold and core in the lower casting frame 3, that is, prevents casting defects. To do. Further, by providing the first plate member 101, the second plate member 102, the first cylinder 103, and the second cylinder 104, the function can be exhibited with a compact configuration, and the configuration of the entire apparatus is simplified and miniaturized. it can.
  • the above-described sand receiving mechanism (also referred to as “sand receiving device”) 100 can be used not only in a blank frame mold making device but also in a frame mold making device for carrying out a molded mold together with a casting frame. Furthermore, it can be provided in a mold making line having a mold making apparatus.
  • the mold making apparatus 1 is provided with a hole punching apparatus that has been conventionally considered difficult to be placed in a two-station type blank frame mold making apparatus, thereby realizing automation of gas vent hole making.
  • the casting frame turning mechanism 5 includes a rotating frame 43 that is turned while holding the upper and lower casting frames 4, and a rotating frame driving unit 44. is doing.
  • the rotating frame driving means 44 is configured such that the tip of the rod 44a is attached to the mounting portion 43a of the rotating frame 43, and the rod 44a is expanded and contracted so that the rotating frame 45 is moved around the rotating shaft M1. Reverse 180 degrees in direction and opposite direction.
  • the casting frame turning mechanism 5 can turn the two pairs of upper and lower casting frames 4 sequentially to the molding station and the mold extraction station by the forward rotation and the reversing operation.
  • a support member 46 is mounted on the upper portion of the rotating frame 43 (FIGS. 1 to 3).
  • the support member 46 is provided with two pairs of guide rods 47 that extend downward in the vertical direction and make a pair at a predetermined interval in the front-rear direction.
  • two pairs of guide rods 47 are provided with an upper hooking member 48 that can hook the engaging recess 2b of the upper casting frame 2 in a vertically slidable manner.
  • the tip of the piston rod of the upward cylinder 49 attached to the rotating frame 43 is fixed to each upper latch member 48.
  • Each upper latch member 48 is moved up and down by the expansion and contraction of the upward cylinder 49.
  • a lower latching member 50 capable of latching the engaging recess 3 b of the lower casting frame 3 is fixed to the lower ends of the two pairs of guide rods 47.
  • the upper latch member 48 is provided with a protrusion 48b that engages with the engagement recess 2b.
  • the lower latch member 50 is provided with a protrusion 50b that engages with the engagement recess 3b.
  • a mold discharge mechanism 51 for extruding the upper and lower molds 12 and 13 extracted from the upper casting frame 2 and the lower casting frame 3 onto the mold receiving table 40 by the extraction mechanism 15. (FIGS. 21 and 22).
  • FIG. 30 is a flowchart of the mold making method.
  • the rotating frame 43 rotates from a basic posture (also referred to as “original position”) as shown in FIG.
  • a basic posture also referred to as “original position”
  • the upper and lower casting frames 2 and 3 positioned at the molding station and the upper and lower casting frames 2 and 3 positioned at the mold extraction station are switched (FIG. 5). That is, the upper and lower casting frames 4 to be processed move to the molding station (S10).
  • the rotary cylinder 26 of the carry-in / out mechanism 21 is rotationally driven from the state shown in FIG.
  • the match plate 6 is carried between the upper casting frame 2 and the lower casting frame 3 in a horizontal state by the pair of arms 27 rotated in the R3 direction (S12).
  • the squeeze mechanism 11 contracts the upward cylinder 34 and the downward cylinder 35 to bring the upper casting frame 2 and the lower casting frame 3 closer to each other via the vertical lifting frames 32 and 33.
  • the upper and lower casting frames 4 brought close to each other by the squeeze mechanism 11 are in a state of holding the match plate 6 (S14).
  • the squeeze mechanism 11 extends the cylinders 36 and 37 to the required length.
  • the cylinders 36 and 37 insert the upper squeeze plate 7 and the lower squeeze plate 8 into the upper casting frame 2 and the lower casting frame 3, respectively.
  • the upper squeeze plate 7 and the lower squeeze plate 8 form two upper and lower molding spaces (upper molding space and lower molding space) together with the upper casting frame 2, the lower casting frame 3, and the match plate 6 (FIG. 7, S16). .
  • the rotation mechanism 10 extends the rod 10a to rotate the squeeze mechanism 11 about the support shaft 23 in the R1 direction as shown in FIG. At this time, the rotation mechanism 10 brings the upper casting frame 2, the lower casting frame 3, and the match plate 6 into a vertical state.
  • the sand inlets 2a and 3a provided on the side walls of the upper casting frame 2 and the lower casting frame 3 are moved upward so as to face upward.
  • the sand introduction ports 2a and 3a of the upper and lower casting frames 4 are brought into contact with sand introduction nozzles 9a and 9b provided at the lower end of the bifurcated shape of the sand tank 9 configured as an aeration tank (S18).
  • the sand tank 9 as the sand filling mechanism fills the upper molding space and the lower molding space with the molding sand through the sand introduction ports 2a and 3a (S20).
  • the cylinders 36 and 37 are driven to move the upper squeeze plate 7 and the lower squeeze plate 8 in the direction close to the match plate 6, and the mold sand in the two upper and lower molding spaces. Is squeezed (S22).
  • the rotation mechanism 10 rotates the upper casting frame 2, the lower casting frame 3, and the match plate 6 in the direction R2 opposite to the above-described rotation direction R1 to obtain a horizontal state (FIG. 11). .
  • the upward cylinder 34 and the downward cylinder 35 are extended to separate the vertical lift frames 32 and 33 from each other.
  • the casting frame turning mechanism 5 extends the cylinder 49 and lifts the upper casting frame 2 containing the mold formed by squeezing the mold sand by the upper retaining member 48.
  • the match plate 6 is removed from the upper casting frame 2 and the lower casting frame 3 (FIG. 12, S24).
  • the cylinder 49 provided in the turning portion separates the upper casting frame 2 from the match plate 6.
  • the lower casting frame 3 is placed on the lower retaining member 50 of the casting frame turning mechanism 5 by the cylinder 35.
  • the rotating cylinder 26 is rotated to carry out the match plate 6 from between the upper casting frame 2 and the lower casting frame 3 by the pair of arms 27 (S26).
  • the casting frame turning mechanism 5 rotates the rotating frame 43 to move the upper and lower casting frames 4 on which the molds 12 and 13 are formed from the molding station to the mold extraction station.
  • the upper and lower casting frames 4 from which the molds 12 and 13 have been extracted at the mold extraction station are moved to the molding station (FIG. 13, S28).
  • a vent hole is formed by the hole forming mechanism 80 (S30).
  • the sand generated by the formation of the vent holes is collected by the sand receiving mechanism 100 and discharged outside the apparatus.
  • the placement of the core 110 is performed by the operator (S32).
  • the core set may be performed before the formation of the gas venting holes shown in FIG. Further, the core setting may not be performed.
  • the upper casting frame 2 containing the mold 12 is lowered via the upper retaining member 48 and placed on the lower casting frame 3 as shown in FIG. Then, the upper and lower cast frames 4 are overlapped (S34).
  • the mold receiving table 40 is raised by the extension operation of the cylinder 41 of the mold extraction mechanism 15, and the upper and lower molds 12 and 13 in the upper and lower casting frames 4 are placed on the table 40.
  • the cylinder 39 of the mold extraction mechanism 15 is extended to lower the pusher member 38 to a position where the upper mold 12 is pushed. Thereafter, the pusher member 38 and the table 40 are lowered while interlocking with each other.
  • the mold is extracted from the upper and lower casting frames 2 and 3 (FIGS. 18, 19, 20, 21 and S36). Subsequently, as shown in FIG. 22, the upper and lower molds 12 and 13 on the table 40 are pushed out in the direction of arrow W in the figure by extending the rod 51a of the mold discharge mechanism 51 (S38).
  • the mold making method has the following steps. That is, in the step of S14, the match plate 6 is sandwiched by moving the upper and lower casting frames 4 made up of the upper casting frame 2 and the lower casting frame 3 that are located at the molding station and face each other in the vertical direction in the proximity of each other. .
  • a pair of squeeze plates 7 and 8 are inserted into the respective openings of the upper and lower casting frames 4 sandwiching the match plate 6 to form an upper molding space and a lower molding space.
  • the upper and lower casting frames 4 forming the upper molding space and the lower molding space are rotated on the axis around the horizontal direction so as to be provided on the respective side walls of the upper and lower casting frames 4.
  • the sand introduction ports 2a and 3a are positioned so that sand can be filled from a pair of sand introduction nozzles 9a and 9b formed downward from the lower end of the sand tank 9.
  • step S20 the molding sand is filled from the sand tank 9 into the upper molding space and the lower molding space through the sand inlets 2a and 3a.
  • step S22 the pair of squeeze plates 7 and 8 are moved to the match plate 6 side to compress the molding sand in the upper molding space and the lower molding space.
  • the upper and lower cast frames 4 are rotated so as to return to the posture opposed in the vertical direction.
  • the match plate 6 is separated from the mold formed in the upper and lower casting frames by moving the upper and lower casting frames 4 in directions away from each other.
  • the upper and lower casting frames are turned so that the upper and lower casting frames on which the molds are formed at the molding station are moved to the mold extraction station.
  • one or a plurality of holes are made by the hole forming mechanism in the mold in the upper casting frame among the upper and lower casting frames moved to the mold extraction station.
  • the upper and lower casting frames on which the molds are formed are overlapped by moving the upper and lower casting frames in directions close to each other.
  • the respective molds in the upper and lower casting frames are extracted from the upper and lower casting frames in a state of being overlapped by the mold extracting mechanism 15 having members that can enter the stacked upper and lower casting frames.
  • the mold making method includes two pairs of the above-described molding station and mold extraction station, and two pairs of upper and lower casting frames each having a process state corresponding to each station.
  • Upper and lower casting frames are provided, and the upper and lower casting frames are swung and moved into two stations, thereby forming the upper and lower casting molds without the casting frames that are sequentially stacked.
  • This mold making method is provided with the above-described characteristic configuration, and by forming the gas vent hole 12a, it is possible to prevent the casting from being defective due to a gas defect. Therefore, the casting quality is improved.
  • sand generated by drilling may be received and discharged by the sand receiving mechanism 100 provided at the same station as the hole forming mechanism. In this way, by preventing the shaved sand generated at the time of drilling from dropping into the lower mold, it is possible to realize automation of gas drilling and to prevent casting quality from being deteriorated by this sand.
  • the mold making apparatus 1 includes the two pairs of upper and lower casting frames 4 each including the upper casting frame 2 and the lower casting frame 3, the casting frame turning mechanism 5, the match plate 6, and the pair. Squeeze plates 7 and 8, a sand tank 9, an extraction mechanism 15, and a hole forming mechanism 80.
  • the mold making apparatus 1 can prevent a defect due to a gas defect from occurring in the casting by the hole forming mechanism 80 forming the gas vent hole 12a. Therefore, the casting quality is improved.
  • the mold making apparatus 1 receives the shaved sand generated at the time of drilling by the sand receiving mechanism 100 and discharges it to the outside of the apparatus so that it does not drop onto the lower mold or the core, so that the gas hole It is possible to realize automation of drilling and to prevent the casting quality from being deteriorated by this sand.
  • the hole forming mechanism 80 and the sand receiving mechanism 100 may be provided in a punching station of a mold making machine having three or more stations. In the case of three or more stations, the hole forming mechanism 80 and the sand receiving mechanism 100 may be provided in stations other than the frame drawing station.
  • SYMBOLS 1 Mold making apparatus, 2 ... Upper casting frame, 3 ... Lower casting frame, 6 ... Match plate, 80 ... Hole formation mechanism, 100 ... Sand receiving mechanism.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
PCT/JP2012/076500 2012-01-20 2012-10-12 抜枠鋳型造型装置、抜枠鋳型造型方法及び砂受け装置 WO2013108449A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL12866350T PL2777844T3 (pl) 2012-01-20 2012-10-12 Urządzenie wytwarzające formę bezskrzynkową, sposób wytwarzania formy bezskrzynkowej i urządzenie przyjmujące piasek
JP2013554182A JP6036705B2 (ja) 2012-01-20 2012-10-12 抜枠鋳型造型装置、抜枠鋳型造型方法及び砂受け装置
CN201280055670.2A CN103945957B (zh) 2012-01-20 2012-10-12 脱箱铸型造型装置、脱箱铸型造型方法以及托砂装置
EP12866350.7A EP2777844B1 (de) 2012-01-20 2012-10-12 Vorrichtung zur herstellung einer behälterlosen form, verfahren zur herstellung einer behälterlosen form und sandaufnahmevorrichtung

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JP2012009808 2012-01-20
JP2012-009808 2012-01-20

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JP (1) JP6036705B2 (de)
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CN104209478A (zh) * 2014-09-23 2014-12-17 南安市德林机械制造有限公司 全自动造型机
JP6809433B2 (ja) * 2017-10-19 2021-01-06 新東工業株式会社 抜枠造型機で造型され、型合せされた上下鋳型の型ずれの発生を低減する方法および抜枠造型ライン

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EP2777844A1 (de) 2014-09-17
JP6036705B2 (ja) 2016-11-30
CN103945957B (zh) 2016-03-02
JPWO2013108449A1 (ja) 2015-05-11
EP2777844A4 (de) 2016-04-13
PL2777844T3 (pl) 2017-10-31
CN103945957A (zh) 2014-07-23
EP2777844B1 (de) 2017-06-14

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