CN211708058U - Composite precoated sand core mold - Google Patents

Abstract

A composite precoated sand core mold is structurally characterized in that a left heating rod is arranged in a left mold, a guide pillar is arranged on the right end face, and a left concave mold for manufacturing an auxiliary sand core A and an auxiliary sand core B is arranged in the end face; the right heating rod is arranged in the right die, and the right side of the right die is movably connected with a top core plate and a top core rod; and a right concave die for manufacturing the auxiliary sand core A and the auxiliary sand core B is arranged at an idle position outside the concave die of the main sand core in the right die, the concave die cavities for manufacturing the main sand core, the auxiliary sand core A and the auxiliary sand core B after die assembly are communicated with the sand injection port through the sand injection channel, and the left end of the top core rod is positioned at the bottom of the concave die cavity. And during core making, the right die is fixed, the precoated sand is injected into the cavity of the female die through the sand injection port after the left die is closed, and the core ejecting rod ejects out the precoated sand core in the cavity of the female die, so that a plurality of core making can be completed at one time. Because the cavity of the female die is large, the heat conduction speed is high when the metal film is heated, the die stripping is fast, the energy is saved, and the production efficiency is improved.

Description

Composite precoated sand core mold

Technical Field

The utility model relates to a be applied to tectorial membrane sand psammitolite mould that uses when the water pump in fields such as petroleum, chemical industry, electric power, metallurgy, civilian and agricultural water conservancy is made, specifically speaking relate to a compound tectorial membrane sand psammitolite mould.

Background

The water pump casting has important influence on the flow, suction lift and lift of the water pump and various service performances of the water pump, such as stability, shock resistance and the like. Because the precoated sand has the characteristics of high strength, low gas generation and low expansion, the manufactured sand core has high precision. Therefore, the sand core is manufactured by adopting a precoated sand core mold in the casting industry, and the manufacturing process of the sand core is that the precoated sand is injected into a mold with a heating device through a core shooter, and the precoated sand close to the surface of the mold is heated and solidified by high-temperature heating, so that the sand core is formed. However, the traditional precoated sand core mold can only be used for manufacturing a sand core, and the defects that the heat conduction is slow during heating, the mold stripping is slow and the like due to the fact that most of products are irregular in shape and the metal mold is too idle locally, energy is wasted, and the production efficiency is low are caused.

Disclosure of Invention

In order to solve the defects of the prior art, the utility model aims at providing a compound tectorial membrane sand psammitolite mould that heat conduction is fast, production efficiency is high produces two kinds or more than two kinds of psammitolites in a tectorial membrane sand psammitolite mould promptly.

Realize the utility model discloses a technical scheme that the purpose adopted is: a composite precoated sand core mold comprises a left mold, a right mold, a guide pillar, a guide sleeve, a sand shooting port, a female mold, a core ejecting plate, a core ejecting rod and a heating rod; the left die is internally provided with a left heating rod, the right end face of the left die is provided with a guide pillar, and the end face of the left die is internally provided with a left female die for manufacturing an auxiliary sand core A and an auxiliary sand core B; the right heating rod is arranged in the right die, and the right side of the right die is movably connected with a top core plate and a top core rod; a guide sleeve matched with the guide pillar of the left die is arranged on the left end surface of the right die, and a female die for manufacturing a main sand core is arranged at the center of the left end surface; and a right concave die for manufacturing the auxiliary sand core A and the auxiliary sand core B is arranged at an idle position outside the concave die of the main sand core, the left concave die for manufacturing the auxiliary sand core A and the auxiliary sand core B in the left die corresponds to the right concave die for manufacturing the auxiliary sand core A and the sand core B in the right die after the dies are assembled, the concave die cavities for manufacturing the main sand core, the auxiliary sand core A and the auxiliary sand core B after the dies are assembled are communicated with the sand injection port through the sand injection channel, a top core rod is fixedly arranged on the left side of the top core plate, and the other end of the top core rod is positioned at the bottom of.

And during core making, the right die is fixed, and the left die reciprocates left and right under the action of the oil cylinder to close and open the die. Firstly, a heating rod heats the left film and the right film, and when the temperature of the die meets the process requirement, the left die moves towards the right to close the die. And after die assembly, the guide pillar is inserted into the guide sleeve, precoated sand is injected into the cavity of the female die from the sand injection port, and after sand injection is finished, the precoated sand is heated and cured. And when the curing time meets the process requirement, opening the mold, moving the left mold to the left, driving the ejector core plate of the right mold to move the ejector core plate to the left, ejecting the ejector core plate out of the cavity of the female mold, and laminating the sand core, thereby completing the core making of the auxiliary sand core A, the main sand core and the auxiliary sand core B at one time.

The utility model has the advantages that: the idle position outside the female die of the main sand core is provided with the female die for manufacturing the auxiliary sand core A and the auxiliary sand core B, namely two or more than two sand core female die cavities can be produced in one precoated sand core die, and precoated sand is injected into the female die cavity to manufacture a plurality of sand cores; and the occupation of the cavity space leads to high heat conduction speed and high mold discharging speed when the metal film is heated, saves energy and improves the production efficiency.

Drawings

Figure 1 is the utility model relates to a compound tectorial membrane sand psammitolite mould right side mould structure chart.

Figure 2 is the utility model relates to a left side view of compound tectorial membrane sand psammitolite mould right mould.

Figure 3 is the utility model relates to a structure diagram of compound tectorial membrane sand psammitolite mould left mould.

Figure 4 is the utility model relates to a right side view of compound tectorial membrane sand psammitolite mould left mould.

Figure 5 is the utility model relates to a perspective view of compound tectorial membrane sand psammitolite mould right mould.

Detailed Description

In the attached drawings, the utility model relates to a composite precoated sand core mold, which comprises a left mold, a right mold, a guide pillar, a guide sleeve, a sand shooting port, a female mold, a top core plate, a top core rod and a heating rod; the left die 1 is internally provided with a left heating rod 14, the right end face of the left die is provided with a guide pillar 15, and the end face of the left die is internally provided with a left female die 18 for manufacturing an auxiliary sand core A and a left female die 17 for manufacturing an auxiliary sand core B; a right heating rod 9 is arranged in the right die 2, and the right side of the right die 2 is movably connected with a top core plate 3 and a top core rod 4; a positioning guide sleeve 13 matched with the left die guide post 15 is arranged on the left end surface of the right die 2, and a female die 6 for manufacturing a main sand core is arranged in the center of the left end surface; the right female die 5 for manufacturing the auxiliary sand core A and the right female die 7 for manufacturing the auxiliary sand core B are arranged at idle positions outside the main sand core female die 6 on the right die 2, a left female die 18 for manufacturing the auxiliary sand core A and a left female die 17 for manufacturing the auxiliary sand core B in the left die respectively correspond to the right female die 5 for manufacturing the auxiliary sand core A and the right female die 7 for manufacturing the sand core B in the right die in position, and three core manufacturing cavities are formed after die assembly; the sand shooting ports are five, the auxiliary sand core A sand shooting port 8, the left sand shooting port 10, the middle sand shooting port 11, the right sand shooting port 12 and the auxiliary sand core B sand shooting port 16 are arranged, the auxiliary sand core A sand shooting port 8 is communicated with a cavity of a right female die 5 of the auxiliary sand core A through a sand shooting channel, the left sand shooting port 10, the middle sand shooting port 11 and the right sand shooting port 12 are communicated with a cavity of a female die 6 of the main sand core through a sand shooting channel, and the auxiliary sand core B sand shooting port 16 is communicated with a cavity of a right female die of the auxiliary sand core B through a sand shooting channel. The left side of the top core plate 3 is fixed with a top core rod 4, and the other end of the top core rod 4 is positioned at the bottom of the concave die cavity. The left side of the left die is connected with an oil cylinder (not shown in the figure), and the left die reciprocates left and right under the action of the oil cylinder to perform die assembly and die opening; the core ejecting device is composed of a core ejecting plate 3, 16 core ejecting rods 4 (16 rods in total) and oil cylinders, the oil cylinders are connected to the right side (not shown in the figure) of the core ejecting plate, the core ejecting rods 4 (16 rods in total) are fixed on the left side of the core ejecting plate 3, and the core ejecting rods are driven by the oil cylinders to reciprocate left and right to eject out the film-coated sand cores in the cavity of the female die, so that the core making is completed. The heating rod is connected with the electric heating device, and the temperature of the heating rod is controlled by the electric heating device. Because the idle position outside the female die of the main sand core is provided with the female die for manufacturing the auxiliary sand core A and the auxiliary sand core B, namely two or more than two sand core female die cavities are produced in one precoated sand core die, the occupation of the space of the cavities causes the heat conduction speed of the metal film die during heating, the die stripping is fast, the energy is saved, and the production efficiency is improved.

Claims (2)

1. A composite precoated sand core mold comprises a left mold, a right mold, a guide pillar, a guide sleeve, a sand shooting port, a female mold, a top core plate, a top core rod and a heating rod; a left heating rod (14) is arranged in the left die (1), a guide pillar (15) is arranged on the right end face, and a left female die (18) for manufacturing the auxiliary sand core A and a left female die (17) for manufacturing the auxiliary sand core B are arranged in the end face; a right heating rod (9) is arranged in the right die (2), and the right side of the right die (2) is movably connected with a top core plate (3) and a top core rod (4); a guide sleeve (13) matched with the left die guide post (15) is arranged on the left end surface of the right die (2), and a female die (6) for manufacturing a main sand core is arranged at the central position of the left end surface of the right die; the method is characterized in that: the right female die (5) for manufacturing the auxiliary sand core A and the right female die (7) for manufacturing the auxiliary sand core B are arranged at idle positions outside the female die (6) of the main sand core on the right die (2), and a left female die (18) for manufacturing the auxiliary sand core A and a left female die (17) for manufacturing the auxiliary sand core B in the left die respectively correspond to the right female die (5) for manufacturing the auxiliary sand core A and the right female die (7) for manufacturing the sand core B in the right die in position; after the die is closed, the concave die cavities for manufacturing the main sand core, the auxiliary sand core A and the auxiliary sand core B are communicated with a sand shooting opening through a sand shooting channel; a top core rod (4) is fixed on the left side of the top core plate (3), and the other end of the top core rod (4) is positioned at the bottom of the concave die cavity.

2. The composite precoated sand core mold of claim 1, wherein: the sand shooting ports are five and are respectively a sand shooting port (8) of an auxiliary sand core A, a left sand shooting port (10), a middle sand shooting port (11), a right sand shooting port (12) and a sand shooting port (16) of an auxiliary sand core B, the sand shooting port (8) of the auxiliary sand core A is communicated with a cavity of a right female die (5) of the auxiliary sand core A through a sand shooting channel, the sand shooting port (10) of the left sand shooting port, the middle sand shooting port (11) and the right sand shooting port (12) are communicated with a cavity of a female die (6) of a main core through a sand shooting channel, and the sand shooting port (16) of the auxiliary sand core B is communicated with a cavity of a right female die of the auxiliary sand core B through a.

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