CN211218560U - Pouring device for gravity pouring of large-size and thin-wall castings by titanium alloy - Google Patents

Abstract

The utility model discloses a pouring device that is used for titanium alloy gravity pouring jumbo size, thin wall foundry goods, include: an upper die holder and a lower die holder; the top bilateral symmetry bolt of upper die base is fixed with and drives actuating cylinder, and drives actuating cylinder and pass through the telescopic link and be connected with the die holder, the bottom bolt fastening of upper die base has the upper die, the outer wall bolt fastening of die holder has the lower die, the pouring basin has been seted up to the outer wall of lower die, the inside of lower die and the inner wall that is located the pouring basin are provided with the cooling layer, the both sides open end of cooling layer communicates respectively has coolant oil exit tube and coolant oil return pipe, and coolant oil exit tube and coolant oil return pipe all communicate with the cooling tank. The utility model discloses in, this titanium alloy casting pouring device adopts circulating cooling oil flow mode, can play the incessant cooling treatment of circulation to the cooling layer to play comprehensive efficient cooling effect to the titanium alloy casting of pouring, improved the cooling rate of titanium alloy casting.

Description

Pouring device for gravity pouring of large-size and thin-wall castings by titanium alloy

Technical Field

The utility model relates to a titanium alloy pouring technical field especially relates to a pouring device that is used for titanium alloy gravity pouring jumbo size, thin wall foundry goods.

Background

The casting is a metal molding object obtained by various casting methods, namely, smelted liquid metal is poured into a casting mold prepared in advance by pouring, injecting, sucking or other casting methods, and after the casting mold is cooled and is subjected to subsequent processing means such as grinding and the like, the object with certain shape, size and performance is obtained.

However, when the existing titanium alloy casting gravity pouring device cools the poured casting, a closed cooling mode is usually adopted, so that the high-temperature casting is continuously contacted with a cooling medium, and the cooling medium cannot be circularly flowed and replaced, so that the cooling medium can be heated and heated after being cooled for a long time, the cooling effect of the cooling medium is reduced, and the cooling rate of the titanium alloy poured casting is further reduced.

Disclosure of Invention

The utility model aims at solving the defects existing in the prior art and providing a pouring device for gravity pouring of large-size and thin-wall castings of titanium alloys.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a casting apparatus for gravity casting large size, thin wall castings of titanium alloys, comprising: an upper die holder and a lower die holder;

driving cylinders are symmetrically fixed on two sides of the top of the upper die base through bolts and are connected with the lower die base through telescopic rods;

an upper pressing die is fixed at the bottom of the upper die holder through a bolt;

a pouring bin is embedded in the top of the upper die base, and the bottom of the pouring bin is communicated with a pouring pipe extending into the upper pressing die;

a lower pressing die is fixed on the outer wall of the lower die holder through bolts;

the outer wall of the lower pressing die is provided with a pouring groove;

a cooling layer is arranged inside the lower pressing die and positioned on the inner wall of the pouring groove;

and the open ends of the two sides of the cooling layer are respectively communicated with a cooling oil outlet pipe and a cooling oil return pipe, and the cooling oil outlet pipe and the cooling oil return pipe are communicated with a cooling oil tank.

As a further description of the above technical solution:

also includes a centrifugal pump;

the centrifugal pump is communicated with the cooling oil outlet pipe;

the centrifugal pump is a horizontal single-stage centrifugal pump.

As a further description of the above technical solution:

also includes a heat exchanger;

the heat exchanger is communicated with the cooling oil return pipe;

and two ends of the heat exchanger are respectively communicated with a cold medium inlet pipe and a hot medium outlet pipe which penetrate through the interior of the lower die holder.

As a further description of the above technical solution:

the device also comprises a lifting cylinder;

the lifting cylinder is arranged inside the lower pressing die;

a lifting frame is connected below the lifting cylinder;

and the tops of the vertical ends of the two sides of the lifting frame are connected with ejector plates through clamping heads.

As a further description of the above technical solution:

the ceramic heat insulation layer is also included;

the ceramic heat insulation layer is embedded at the top end of the inner wall of the ejector plate;

the outer wall of the ceramic heat-insulating layer is provided with a material ejecting head, and the material ejecting head is attached to the inner wall of the vertical end of the pouring groove.

As a further description of the above technical solution:

the device also comprises a pressure sensor;

the pressure sensor is embedded in the outer wall of the lower pressing die;

the pressure sensor is of an embedded closed structure.

Advantageous effects

The utility model provides a pouring device for titanium alloy gravity pouring jumbo size, thin wall foundry goods. The method has the following beneficial effects:

(1): the titanium alloy casting pouring device adopts a circulating cooling oil flowing mode, can perform circulating uninterrupted cooling treatment on the cooling layer, so that the cooling layer is always in a low-temperature state, a comprehensive and efficient cooling effect is performed on the poured titanium alloy casting, and the cooling rate of the titanium alloy casting is increased as fast as possible.

(2): this titanium alloy casting pouring device can play the heat exchange to the circulating flow's coolant oil through the heat exchanger that sets up and handle, absorbs the heat in the coolant oil and outwards carries out thermal conduction, realizes the heat recovery effect to pouring device work heat, and then has improved thermal utilization ratio, has realized energy-concerving and environment-protective effect.

Drawings

Fig. 1 is a schematic overall structure diagram of a pouring device for gravity pouring of large-size and thin-wall castings of titanium alloy according to the present invention;

FIG. 2 is a schematic view of the internal structure of the middle lower pressing mold of the present invention;

figure 3 is the structure schematic diagram of the middle lifting frame of the utility model.

Illustration of the drawings:

1. a driving cylinder; 2. an upper die holder; 3. a pouring bin; 4. a pouring tube; 5. pressing the die; 6. a telescopic rod; 7. pressing a die; 71. cooling the oil tank; 72. a cooling oil outlet pipe; 721. a centrifugal pump; 73. a pressure sensor; 74. pouring a trough; 75. a lifting cylinder; 76. a cooling layer; 77. a lifting frame; 771. clamping a head; 772. a material ejecting plate; 773. a ceramic thermal insulation layer; 774. a material ejecting head; 78. a cooling oil return pipe; 8. a cold medium inlet pipe; 9. a heat exchanger; 10. a lower die holder; 11. and a heat medium outlet pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

As shown in fig. 1-3, a casting apparatus for gravity casting large-size, thin-walled castings of titanium alloys comprises: an upper die holder 2 and a lower die holder 10;

the driving cylinders 1 are symmetrically fixed on two sides of the top of the upper die holder 2 through bolts, and the driving cylinders 1 are connected with the lower die holder 10 through telescopic rods 6;

an upper pressing die 5 is fixed at the bottom of the upper die holder 2 through a bolt;

a pouring bin 3 is embedded in the top of the upper die holder 2, and the bottom of the pouring bin 3 is communicated with a pouring pipe 4 extending into an upper pressing die 5;

a lower pressing die 7 is fixed on the outer wall of the lower die holder 10 through bolts;

the outer wall of the lower pressing die 7 is provided with a pouring groove 74;

a cooling layer 76 is arranged inside the lower die 7 and on the inner wall of the pouring groove 74;

the open ends of the two sides of the cooling layer 76 are respectively communicated with a cooling oil outlet pipe 72 and a cooling oil return pipe 78, and the cooling oil outlet pipe 72 and the cooling oil return pipe 78 are both communicated with the cooling oil tank 71;

the centrifugal pump 721 is communicated with the cooling oil outlet pipe 72, and the centrifugal pump 721 is a horizontal single-stage centrifugal pump.

In this embodiment, the driving cylinder 1 is started, so that the driving cylinder 1 moves the telescopic rod 6 to be shortened, the upper die base 2 is moved downwards, the upper die 5 is in contact with the lower die 7, at this time, the titanium alloy fluid castable in the pouring bin 3 flows into the pouring pipe 4 under the action of gravity, and cannot finally flow into the pouring groove 74 for gravity pouring, so that a large-size thin-wall casting is formed, after the casting is poured and formed, the centrifugal pump 721 is started, the cooling oil in the cooling oil tank 71 is pumped into the cooling layer 76 through the cooling oil outlet pipe 72, so that the cooling layer 76 absorbs and cools high-temperature heat generated by casting pouring, and then the cooling oil in the cooling layer 76 flows into the cooling oil tank 71 again through the cooling oil return pipe 78, so as to achieve the effect of cooling and cooling the pouring device circularly.

The cooling oil return pipe 78 is communicated with the heat exchanger 9, and the two ends of the heat exchanger 9 are respectively communicated with a cold medium inlet pipe 8 and a heat medium outlet pipe 11 which penetrate through the interior of the lower die holder 10.

In the present embodiment, the cooling medium for heat exchange is introduced into the heat exchanger 9 through the cooling medium inlet pipe 8, the cooling medium is brought into contact with the high-temperature cooling oil to perform heat exchange, thereby raising the temperature, and then the heating medium is discharged to the outside through the heating medium outlet pipe 11, thereby achieving an effect of cooling the cooling oil and an effect of recovering heat from the heat of the pouring device.

Still include lift cylinder 75, lift cylinder 75 sets up in the inside of die 7 down, and lift cylinder 75's below is connected with crane 77, and crane 77's the vertical end top in both sides all is connected with ejector plate 772 through dop 771, still includes ceramic insulating layer 773, and ceramic insulating layer 773 inlays the inner wall top of establishing at ejector plate 772, and ceramic insulating layer 773's outer wall is provided with ejector head 774, and the laminating of the vertical end inner wall of ejector head 774 and pouring groove 74.

In this embodiment, when titanium alloy fluid material pours into the pouring basin 74 inside, lift cylinder 75 can drive crane 77 and move down, otherwise, when needs are unloaded to the pouring foundry goods, lift cylinder 75 drive crane 77 shifts up for ejector plate 772 contacts with the pouring foundry goods in pouring basin 74, will pour the foundry goods and carry out the ejection from pouring basin 74 and unload, and ceramic insulating layer 773 cooperates ejector plate 774 can reduce the high temperature influence that ejector plate 772 received, thereby prevent that ejector plate 772 from taking place the phenomenon of warping under the influence of lasting high temperature.

The pressure sensor 73 is embedded in the outer wall of the lower die 7, and the pressure sensor 73 is of an embedded closed structure.

In this embodiment, the pressure sensor 73 is connected with the external controller through the wireless bluetooth technology, when the lower die 7 contacts with the upper die 5, the pressure sensor 73 can receive the pressure effect, at this moment, the pressure sensor 73 can send a sensing signal, so that the external controller controls the lifting cylinder 75 to start and move down, the ejector plate 772 moves down in the pouring slot 74, when the lower die 7 is separated from the upper die 5, the pressure sensor 73 can send a sensing signal, so that the external controller controls the lifting cylinder 75 to start and move up, and the ejector plate 772 ejects the poured casting from the pouring slot 74 to unload.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. A casting device for gravity casting large-size and thin-wall castings of titanium alloys, comprising: an upper die holder (2) and a lower die holder (10);

the driving cylinders (1) are symmetrically fixed on two sides of the top of the upper die holder (2) through bolts, and the driving cylinders (1) are connected with the lower die holder (10) through telescopic rods (6);

an upper pressing die (5) is fixed at the bottom of the upper die holder (2) through bolts;

a pouring bin (3) is embedded in the top of the upper die base (2), and the bottom of the pouring bin (3) is communicated with a pouring pipe (4) extending into the upper pressing die (5);

a lower pressing die (7) is fixed on the outer wall of the lower die holder (10) through bolts;

a pouring groove (74) is formed in the outer wall of the lower pressing die (7);

a cooling layer (76) is arranged inside the lower pressing die (7) and on the inner wall of the pouring groove (74);

the opening ends of the two sides of the cooling layer (76) are respectively communicated with a cooling oil outlet pipe (72) and a cooling oil return pipe (78), and the cooling oil outlet pipe (72) and the cooling oil return pipe (78) are both communicated with a cooling oil tank (71).

2. A pouring device for gravity pouring of large size, thin walled castings of titanium alloys according to claim 1, further comprising a centrifugal pump (721);

the centrifugal pump (721) is communicated with the cooling oil outlet pipe (72);

the centrifugal pump (721) is a horizontal single-stage centrifugal pump.

3. A casting arrangement for gravity casting of large size, thin walled castings of titanium alloys according to claim 1, further comprising a heat exchanger (9);

the heat exchanger (9) is communicated with a cooling oil return pipe (78);

and two ends of the heat exchanger (9) are respectively communicated with a cold medium inlet pipe (8) and a hot medium outlet pipe (11) which penetrate through the interior of the lower die holder (10).

4. A casting apparatus for gravity casting of large size, thin walled castings of titanium alloys according to claim 1, further comprising a lift cylinder (75);

the lifting cylinder (75) is arranged inside the lower pressing die (7);

a lifting frame (77) is connected below the lifting cylinder (75);

the top parts of the vertical ends of the two sides of the lifting frame (77) are connected with a jacking plate (772) through clamping heads (771).

5. A casting arrangement for gravity casting of large size, thin walled castings of titanium alloys according to claim 4, further comprising a ceramic insulation layer (773);

the ceramic heat insulation layer (773) is embedded at the top end of the inner wall of the ejector plate (772);

the outer wall of the ceramic heat-insulating layer (773) is provided with a material ejecting head (774), and the material ejecting head (774) is attached to the inner wall of the vertical end of the pouring groove (74).

6. A casting apparatus for gravity casting of large size, thin walled castings of titanium alloys according to claim 1, further comprising a pressure sensor (73);

the pressure sensor (73) is embedded in the outer wall of the lower pressing die (7);

the pressure sensor (73) is of an embedded closed structure.

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