CN211938993U - Mould for producing radiator case for magnetic suspension train - Google Patents

Abstract

The scheme discloses a die for producing a radiator case for a maglev train in the field of train part manufacturing, which comprises an upper template, a lower template, an upper die core, a lower die core and four side dies; the upper mold core is fixedly connected in the upper template, and the lower mold core is fixedly connected in the lower template; the four side dies are positioned between the upper die core and the lower die core, the four side dies, the upper die core and the lower die core jointly enclose a die cavity, and a liquid lifting pipe orifice and a flow groove are arranged on the lower die core; a plurality of mould runners are uniformly distributed on the lower mould core; a plurality of exhaust grooves are uniformly distributed on the upper die core. In the production mold of the radiator cabinet for the magnetic suspension train, a plurality of mold runners are arranged on the lower mold core, so that the aluminum liquid can quickly reach a mold cavity; the upper die core is provided with a plurality of exhaust grooves, so that gas generated in the rapid flowing process of the aluminum liquid can be rapidly exhausted through the exhaust grooves; and further, the formed radiator case can meet the strength requirement.

Description

Mould for producing radiator case for magnetic suspension train

Technical Field

The utility model belongs to train parts makes the field, in particular to mould of production radiator machine case for maglev train.

Background

The radiator chassis of the maglev train is an important accessory on the maglev train, and in order to ensure the requirement of train components at the speed of 600 kilometers or more, the radiator chassis for the maglev train is required to have the characteristics of high strength and light weight; and the aluminum alloy material can better meet the requirement. At present, the radiator case for the magnetic suspension train is mainly produced by adopting a founding casting mode, during founding casting, molten aluminum flows are automatically formed by depending on the shape of a product, the compactness of the product is poor, the surface of a sand mold is rough, and when the thinness of reinforcing ribs reaches 2.6mm, the size requirement can be met only by processing the reinforcing ribs in a processing center; in addition, in order to meet the shape requirement, a large number of casting heads are added, and the casting cost is high. Aiming at the problem, domestic manufacturers try to produce the radiator case for the maglev train in a low-pressure casting mode, wherein the mould adopted in the low-pressure casting of the radiator case for the maglev train comprises an upper template, a lower template, an upper mould core, a lower mould core and a side mould; the upper mold core is fixedly connected in the upper template, and the lower mold core is fixedly connected in the lower template; the side die is positioned between the upper die core and the lower die core and forms a die cavity; the lower die core is provided with a liquid lifting pipe orifice, and the upper surface of the lower die core is provided with a flow groove and a die flow passage; when the aluminum alloy liquid heating device is used, the liquid lifting pipe orifice is connected with heated aluminum alloy liquid, and the aluminum alloy liquid enters the die cavity through the flow groove and the die runner to obtain the radiator case for the magnetic suspension train. When current low pressure casting radiator machine case for magnetic suspension train, in order to guarantee the gas permeability and the intensity of radiator machine case for magnetic suspension train, the top equipartition at radiator machine case for magnetic suspension train has a plurality of strengthening ribs, and is gapped between the strengthening rib, because strengthening rib on the radiator machine case for magnetic suspension train is too thin, current product 2.6mm, (generally require within 4mm at strengthening rib thickness), lead to radiator machine case for magnetic suspension train to be difficult to the casting shaping. While the radiator box for a magnetic levitation train can be molded by high-pressure cast metal, the cast radiator box for a magnetic levitation train cannot meet the strength requirement indexes of 320mpa tensile strength, 190mpa yield strength, 5% elongation after fracture, 90HBS hardness, 230mpa shear strength and 165mpa rotational bending fatigue strength of a365.2 product.

SUMMERY OF THE UTILITY MODEL

The utility model provides a mould of production radiator machine case for magnetic suspension train to solve the problem that the cast mode of using the founding is difficult to the shaping to go out thinner radiator machine case for magnetic suspension train at present.

The mold for producing the radiator cabinet for the maglev train comprises an upper template, a lower template, an upper mold core, a lower mold core and four side molds; the upper mold core is fixedly connected in the upper template, and the lower mold core is fixedly connected in the lower template; the four side dies are positioned between the upper die core and the lower die core, the four side dies, the upper die core and the lower die core jointly enclose a die cavity, and a liquid lifting pipe orifice and a flow groove are arranged on the lower die core; a plurality of mould runners are uniformly distributed on the lower mould core; a plurality of exhaust grooves are uniformly distributed on the upper die core.

The working principle and the beneficial effects of the scheme are as follows: when the lower die plate is used, the lower die plate is fixed on a working platform of a low-pressure casting machine, the upper die plate is fixed on a movable oil cylinder plate of the low-pressure casting machine, four side dies are fixed on a four-side core-pulling oil cylinder of the low-pressure casting machine, and casting processing can be performed after the dies are closed. In the production mold of the radiator cabinet for the magnetic suspension train, a plurality of mold runners are arranged on the lower mold core, so that aluminum liquid can slowly and uniformly reach a mold cavity; the upper die core is provided with a plurality of exhaust grooves, so that gas generated in the rapid flowing process of the aluminum liquid can be rapidly exhausted through the exhaust grooves; further ensuring that the formed radiator case for the magnetic suspension train can meet the strength requirement; and the thinnest thickness of the radiator box for the magnetic suspension train can be as low as 2.6 mm.

Furthermore, the upper die core is composed of a plurality of upper die blades, the upper die blades are in contact with each other and are detachably connected with each other, and the exhaust grooves are uniformly distributed in the upper die blades. The upper die core is formed by the upper die blades, and fine gaps are inevitably formed among the upper die blades, so that gas is discharged, and the forming of the radiator case for the magnetic suspension train is facilitated.

Further, a plurality of the upper die blades are detachably connected through connecting pins. The connecting pins are used for connecting the upper die blades, so that dislocation between the upper die blades can be effectively avoided.

Furthermore, a placing hole is formed in the upper die blade, and a heating tube is arranged in the placing hole. Through the arrangement of the heating tubes, aluminum liquid can be gradually cooled in the casting process of the radiator cabinet for the magnetic suspension train, and through the arrangement of the heating tubes, the mold of the radiator cabinet for the magnetic suspension train can be effectively ensured to keep proper temperature in the casting process, so that the casting molding of the radiator cabinet for the magnetic suspension train is ensured or improved.

Furthermore, at least two flow grooves are uniformly distributed. The uniform distribution is provided with a plurality of flow grooves, so that the aluminum liquid can be shunted, the speed of the aluminum liquid flowing into the mold cavity is further reduced, the amount of the aluminum liquid entering each part of the mold cavity is more balanced, and the effective molding and the molded strength of the radiator case for the magnetic suspension train are further ensured.

Furthermore, a plurality of liquid lifting pipe openings are uniformly distributed. The uniformly distributed liquid lifting pipe orifices can further reduce the speed of the aluminum liquid flowing into the die cavity in a single liquid lifting pipe orifice while ensuring the total amount of the aluminum liquid entering, improve the balance and further ensure the effective molding and the molded strength of the radiator case for the maglev train.

Furthermore, the upper die plate is fixedly connected with an upper die frame. Through the arrangement of the upper die frame, the connection between the upper die plate and the movable oil cylinder plate of the low-pressure casting machine can be realized more conveniently.

Furthermore, a sliding plate is vertically and slidably connected to the upper die frame, a plurality of top die rods are fixedly connected to the sliding plate, and the top die rods penetrate through the upper die plate and are in contact with the tops of the upper die blades. Because the upper die blades have fine gaps, the gaps are easily filled with aluminum liquid and solidified after the maglev train is cast and molded by the radiator case; the plurality of ejector die rods are arranged, so that the radiator case for the magnetic suspension train can be conveniently demoulded.

Drawings

FIG. 1 is a perspective view of a mold for producing a case of a heat sink for a magnetic levitation train according to the present invention;

FIG. 2 is a perspective view of FIG. 1 with the upper die carrier, top die mechanism and upper die plate removed;

FIG. 3 is a perspective view of FIG. 2 with the upper mold core and the case of the maglev train radiator removed;

fig. 4 shows the heat sink housing for the magnetic levitation train in fig. 2.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises an upper die frame 1, a connecting plate 2, an upper die plate 3, a lower die plate 4, a side die 5, a fixing plate 6, a sliding plate 7, a top die rod 8, a lower die core 9, a runner 91, a die runner 92, a liquid lifting pipe orifice 93, an upper die core 10, an upper die blade 101, a pin hole 102, a placing hole 103, an exhaust duct 104, a top rod hole 105, a radiator box 11 for a magnetic suspension train and reinforcing ribs 111.

The embodiment is basically as shown in the attached figures 1-3: a mould for producing a radiator case for a maglev train comprises an upper template 3, a lower template 4, an upper mould core 10, a lower mould core 9, an upper mould frame 1, a top mould mechanism and four side moulds 5; the top die mechanism comprises a sliding plate 7 and a plurality of top die rods 8 uniformly distributed at the bottom of the sliding plate 7; the upper die plate 3 is fixedly connected to the bottom of the upper die frame 1 through screws, the sliding plate 7 is vertically and slidably connected into the upper die frame 1, a plurality of ejector rod rods 8 penetrate through the upper die plate 3 and are in contact with the tops of the upper die blades 101, and a plurality of ejector rod holes 105 corresponding to the ejector rod rods 8 are formed in the tops of the upper die blades 101; the upper die core 10 is fixedly connected in the upper template 3 through screws, and the lower die core 9 is fixedly connected in the lower template 4 through screws; the four side molds 5 are positioned between the upper mold core 10 and the lower mold core 9, the four side molds 5, the upper mold core 10 and the lower mold core 9 jointly enclose a mold cavity, the upper mold core 10, the side molds 5 and the lower mold core 9 are connected through a fixing plate 6, and the outer walls of the side molds 5 are fixedly connected with a connecting plate 2 through screws; the lower die core 9 is provided with two liquid lifting pipe orifices 93 and a flow groove 91 which are correspondingly communicated; a plurality of mould runners 92 communicated with the runners 91 are uniformly distributed on the lower mould core 9; the upper die core 10 is composed of a plurality of upper die blades 101, pin holes 102 are arranged on the upper die blades 101, a connecting pin connects the upper die blades 101 in series through the pin holes 102, and a plurality of vertically arranged exhaust grooves 104 are uniformly distributed on the upper die blades 101; the upper die blade 101 is also provided with a placing hole 103, and a heating pipe is arranged in the placing hole 103.

The upper die frame 1 is made of QT600 material, and the lower die core 9 and the upper die core 10 are made of H13 material. The die is arranged on a BG2625 type double-riser nozzle 93 low-pressure casting machine, a lower die plate 4 is fixed on a working platform of the low-pressure casting machine, an upper die frame 1 is fixed on a movable oil cylinder plate of the low-pressure casting machine, and four side dies 5 are fixed on a four-side core-pulling oil cylinder of the low-pressure casting machine through connecting plates 2. After the mold is installed, the mold is heated to 170-200 ℃, heat insulation paint is sprayed on the mold, the paint is of a metal type G-395 type, the mold is heated to 200-230 ℃ again after spraying is finished, the paint is sprayed for the first time, the paint is uniformly distributed on the surface of the mold, the thickness of the paint is 0.15-0.2 mm, the mold is heated to 380 ℃ again, temperature measurement equipment is used for detecting, the temperature is guaranteed to be uniform, a heating pipe is electrified to heat an upper mold blade 101 after the temperature is proper, the mold is closed, starting casting is prepared, a stroke switch of a low-pressure casting machine and product parameters are set well under the best idle motion of the mold, the product is molded and cast in three sections, the first section is 9s, the mold filling pressure is 320 mbar, the second section is 13s, the mold filling pressure is 480 mbar, the third section is 10 s. Dwell time was 80s and cooling was started after 25 s. And formally pressing a start key after the automatic die opening is carried out and no abnormity occurs, and obtaining the radiator case 11 for the magnetic suspension train (as shown in figure 4) after the product is formed, wherein the thickness of the reinforcing ribs 111 on the radiator case 11 for the magnetic suspension train can be as thin as 2.6 mm.

Claims (8)

1. A mould for producing a radiator case for a maglev train comprises an upper template, a lower template, an upper mould core, a lower mould core and four side moulds; the upper mold core is fixedly connected in the upper template, and the lower mold core is fixedly connected in the lower template; the four side dies are positioned between the upper die core and the lower die core, the four side dies, the upper die core and the lower die core jointly enclose a die cavity, and a liquid lifting pipe orifice and a flow groove are arranged on the lower die core; the method is characterized in that: a plurality of mould runners are uniformly distributed on the lower mould core; a plurality of exhaust grooves are uniformly distributed on the upper die core.

2. The mold for producing a radiator box for a magnetic levitation train as recited in claim 1, wherein: the upper die core is composed of a plurality of upper die blades, the upper die blades are in contact with each other and are detachably connected with each other, and the exhaust grooves are uniformly distributed in the upper die blades.

3. The mold for producing a radiator box for a magnetic levitation train as recited in claim 2, wherein: a plurality of the upper die blades are detachably connected through connecting pins.

4. The mold for producing a radiator box for a magnetic levitation train as recited in claim 3, wherein: the upper die blade is provided with a placing hole, and a heating tube is arranged in the placing hole.

5. The mold for producing a radiator box for a magnetic levitation train as recited in any one of claims 1 to 4, wherein: at least two flow grooves are uniformly distributed.

6. The mold for producing a radiator box for a magnetic levitation train as recited in claim 5, wherein: the liquid lifting pipe openings are uniformly distributed.

7. The mold for producing a radiator box for a magnetic levitation train as recited in claim 6, wherein: the upper die plate is fixedly connected with an upper die frame.

8. The mold for producing a radiator box for a magnetic levitation train as recited in claim 7, wherein: the upper die frame is vertically and slidably connected with a sliding plate, the sliding plate is fixedly connected with a plurality of top die rods, and the top die rods penetrate through the upper die plate and are in contact with the tops of the upper die blades.

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