JPH0549162U - Turntable suction casting equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object of the present invention to provide a station type suction casting apparatus capable of performing molten metal replenishment management and molten metal temperature management for molten metal. Structure: A common holding furnace 7 formed in a plane radial or annular shape is provided on a turntable 4 that performs intermittent rotation, and a suction casting machine that communicates with a vacuum generator 24 at equal intervals of radial tips of the common holding furnace 7. A turntable type suction casting device equipped with S.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a suction casting device that depressurizes the mold cavity to suck molten metal from the lower part of the mold to fill the mold cavity with metal, and in particular, a plurality of suction casting machines are provided on a turntable. The present invention relates to a station-type suction casting device mounted on a table.

[0002]

[Prior art and problems]

 Conventionally, a station type suction casting apparatus is generally provided on a turntable with a holding furnace and mold equipment for each casting machine at equal intervals. When a large number of holding furnaces are arranged in this way, it is necessary to replenish the molten metal or control the temperature of the molten metal separately, which makes it difficult to manage as a whole. The present invention has been made in view of the above problems, and an object of the present invention is to provide a turntable type suction casting apparatus which can easily perform supply of molten metal and temperature control.

[0003]

[Means for solving problems]

 In order to achieve the above object, a turntable type suction casting apparatus according to the present invention comprises a turntable horizontally rotatable so as to stop at a plurality of stations including a product take-out station, and a turntable mounted on the turntable. A common holding furnace formed in a plane radial or annular shape is provided, and a lower fixing plate with a lower die is provided on the upper part of the common holding furnace at the radial tip end portion or the annular part of the common holding furnace and each lower fixing plate. A movable plate having a gate-shaped frame fixed to the common mold, a lower holding mold connected to a common holding furnace through a stalk pipe, and an upper mold corresponding to the lower mold attached to the lower surface of the gate-shaped frame. And a mold facility which is provided so as to be able to move up and down through a cylinder, and a mold cavity when the lower mold and the upper mold are matched with each other is connected to a vacuum generator through a pipe. Sucked It is characterized in that consists of a caster.

[0004]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In FIGS. 1 and 2, a circular turntable 4 is supported in the pit 1 by taper rollers 3 and 3 rotatably supported by support roller units 2 and 2, and the lower part of the center of the turntable 4 is supported. A rotary shaft 5 is integrally mounted and rotatably supported by a bearing unit 6. On the turntable 4, four suction casting machines S are radially installed at substantially equal intervals, and the turntable 4 is intermittently rotated horizontally among A, B, C, D and stations. And the D station is in a product take-off station.

Now, the suction casting machine S will be described in detail. At the position corresponding to each station A, B, C, D on the turntable 4, a tip end of a common holding furnace 7 formed in a plane radial shape (cross shape) is provided and provided. Four leg members 8, 8 are erected so as to surround each tip of the furnace 7, and a lower fixing plate 9 is fixed in a horizontal state between the upper ends of the leg members 8, 8. There is. Incidentally, 7A is a lid member. A central through hole 10 is attached to a central portion of the lower fixing plate 9, and a lower mold 11 is attached on the lower fixing plate 9, and the lower mold 11 and the holding furnace 7 are attached. The tip end portions of the above are communicated and connected through the center through hole 10 through a stalk pipe 7B and an intermediate stalk pipe 7C.

Further, on the upper part of the lower fixing plate 9, a gate-shaped frame composed of four guide columns 12, 12 and an upper fixing plate 13 provided between the upper ends of the guide columns 12, 12 is erected. A cylinder 14 is attached downward to the upper fixing plate 13. An elevating plate 17 is fixed to the lower end of the piston rod 15 of the cylinder 14 so as to penetrate through the guide columns 12 and 12 through the inner cylinder 16, and the lower surface of the elevating plate 17 has the lower portion. An upper mold 18 corresponding to the mold 11 is fixed. Further, the upper and lower molds 18 and 11 form a mold cavity 19 in a state of being matched with each other, and a hollow chamber 20 is formed around the mold cavity 19, and the hollow chamber 20 is formed in the lower mold 11. It communicates with the vacuum generator 24 through a communication hole 21 provided and a pipe 23 provided with an atmosphere release valve 22. The hollow chamber 20 is communicated with the mold cavity 19 through an air vent plug (not shown) embedded in the surface of the mold cavity 19 and a slit on the mold matching surface.

With such a structure, the turntable 4 is intermittently rotated by a driving device (not shown), and the four suction casting machines S, S are moved to respective station positions A, B, C, D. The following is performed in the suction casting machine S that stops intermittently and sequentially rotates and moves to the positions of the A to C stations during this period. That is, the suction casting machine S moved from the product take-out station D to the station A moves while the cylinder 14 is extended and the upper and lower molds 18 and 11 are clamped. In this state, the vacuum generator 24 is actuated to reduce the pressure in the mold cavity 19 through the pipe 23, the communication hole 21, the hollow chamber 20, the vent plug (not shown), the slit of the parting surface, etc. Is sucked into the mold cavity 19 of the upper and lower molds 18 and 11 through the stalk pipe 7B and the intermediate stalk pipe 7C, and the depressurized state is maintained until the molten metal M in the cavity 19 is cooled and solidified.

When the molten metal M in the mold cavity 19 is solidified, the operation of the vacuum generator 24 is stopped and the atmosphere release valve 22 is opened to return the hollow chamber 20 and the mold cavity 19 to the atmospheric state. The molten metal M in the intermediate stalk pipe 7C and the stalk pipe 7B is returned to the common holding furnace 7. During this time, the turntable 4 is rotated intermittently in sequence, and the suction casting machine S located at the A station moves sequentially to the B and C stations. When it reaches the product take-out station D position, the cylinder 14 contracts and operates. Then, the elevating plate 17 and the upper mold 18 to which the cast product is attached are lifted to a predetermined height, and the cast product is taken out by manual work or the like.

Next, after the upper and lower molds 18 and 11 are cleaned with the mold opened, the core is set in the lower mold 11 as needed, and then the cylinder 14 is extended to move the upper mold 18 up and down. The plate 17 is lowered and the upper and lower molds 18 and 11 are clamped. Then, the turntable 4 is rotated, the suction casting machine S at the product take-out station D is moved to the station A, and the above operation is repeated. During this time, replenishment of the molten metal is performed by opening the lid member 7A at a predetermined position to the common holding furnace 7 at a time and controlling the temperature of the molten metal with a small control system.

[0010]

[Effect of the device]

 As is apparent from the above description, the present invention uses a common holding furnace for each casting machine on the turntable, which makes it possible to replenish the molten metal and control the temperature of the molten metal by the minimum (number of times, control system). The advantage is remarkable.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a partially omitted front view taken along the line EE in FIG.

FIG. 3 is a view on arrow in FIG.

[Explanation of symbols]

 4 Turntable 7 Common holding furnace 11 Lower mold 14 Cylinder 18 Upper mold 24 Vacuum generator

Claims (1)

[Scope of utility model registration request] 1. A turntable which is horizontally rotatably provided so as to be stopped at a plurality of stations including a product take-out station, and a common holding furnace which is formed in a plane radial or annular shape on the turntable. At the radial tip of the holding furnace or at equal intervals on the annular part,
A lower fixing plate attached with a lower mold is provided on the upper part, and a gate type frame is fixed to each lower fixing plate, and the lower mold is communicated with a common holding furnace through a stalk pipe and the lower face of the gate type frame A movable plate provided with an upper mold corresponding to the lower mold is provided so as to be able to move up and down through a cylinder, and the mold cavity when the lower mold and the upper mold are matched is vacuumed through a pipe. A turntable type suction casting apparatus comprising: a suction casting machine configured by a mold facility provided in communication with a generator.