CN205571380U - Carry out refrigerated device to thick big section of die casting - Google Patents

Abstract

The utility model relates to the technical field of die-casting moulds, and discloses a device for cooling the thick and large sections of die-casting parts, which comprises a die-casting part mold (1), and a cooling device is provided on the die-casting part corresponding to the thick and large section of the die-casting part. A channel (2), wherein a cooling rod (3) is arranged in the cooling channel, and a water inlet channel (4) and a water outlet channel (5) are arranged at the end of the cooling rod on the die casting mold. The utility model has the advantages of simple structure, little influence by the mold structure, strong applicability and good cooling effect, can effectively eliminate air holes and shrinkage cavities on the surface of the die-casting parts, and improve product quality.

Description

A Cooling Device for Thick and Large Sections of Die Castings

technical field

The utility model relates to the technical field of die-casting molds, in particular to a device for cooling the thick and large sections of die-casting parts.

Background technique

The temperature drop of thick and large sections of die castings always lags behind other sections with thin walls. In the later stage of solidification of castings, thick and large sections always lag behind the solidification of other sections, such as automobile engine parts - camshaft cover, the bearing bush is the whole The part with the largest wall thickness of the casting, when the casting is formed in the mold and changes from liquid to solid, the section with thick wall is always later than the section with thin wall, so the slag and gas in the residual aluminum water are concentrated in the wall thickness Thick parts will cause pores and slag holes to appear after processing the thick parts. Therefore, cooling the thick and large sections in die-casting production is a basic method in die-casting production.

At present, the most commonly used method is to use cooling water pipes for water cooling. As shown in Figure 1, a cooling channel is processed at the part of the mold with the thickest and largest cross-section relative to the casting, and a water inlet and an outlet are set at the end of the cooling channel. The water port passes cooling water through the cooling passage for cooling. However, the above structure is greatly affected by the structure of the mold, especially when the cooling channel is narrow and too deep, the cooling water pipe cannot be connected.

Utility model content

In order to solve the above technical problems, the utility model provides a device for cooling the thick and large sections of die castings. The utility model has the advantages of simple structure, little influence by the mold structure, strong applicability and good cooling effect, can effectively eliminate air holes and shrinkage cavities on the surface of the die-casting parts, and improve product quality.

The specific technical solution of the utility model is: a device for cooling the thick and large section of the die-casting, including a die-casting mold, and a cooling channel is provided on the die-casting mold corresponding to the thick and large section of the die-casting. A cooling rod is arranged in the cooling channel, and a water inlet channel and a water outlet channel are arranged at the end of the cooling rod on the die casting mold.

Preferably, the water inlet channel and the water outlet channel are respectively located on both sides of the end of the cooling rod.

Preferably, the outer diameter of the cooling rod and the inner diameter of the cooling channel are too tight fit.

Preferably, the head end of the cooling rod is provided with a silica gel coating. The silicone coated set facilitates post-installation insertion of the cooling rod.

Preferably, the cooling rod is a copper rod. Copper has excellent thermal conductivity, and the heat of the mold will be quickly absorbed by the copper rod.

Preferably, an inspection installation hole is provided at the end of the cooling channel on the die casting mold, and a sealing plug is provided in the inspection installation hole. The function of the inspection mounting hole is to install and replace the cooling rod, and it can be inspected when a fault occurs in the cooling channel.

In the part of the mold with a thick and large cross-section relative to the die-casting part, a cooling channel is processed. The cooling channel and the outer diameter of the cooling rod adopt an over-tight tolerance requirement. During assembly, the cooling rod is driven into the corresponding part of the mold. Coat the silica gel, drill the inlet and outlet channels in the corresponding parts of the mold, when the mold and the die-casting parts are in heat exchange, the cooling rod absorbs part of the heat of the mold, and at the same time, the end of the cooling rod is completely immersed in the flowing cooling water to dissipate all the heat Take it away, so that the thick and large sections of die castings can be cooled. Each cycle of heat absorption and heat release goes round and round to take away the heat from the corresponding part of the mold, realizing the purpose of cooling the thick and large section of the die casting.

Compared with the prior art, the beneficial effects of the utility model are:

The utility model has the advantages of simple structure, little influence by the mold structure, strong applicability and good cooling effect, can effectively eliminate air holes and shrinkage cavities on the surface of the die-casting parts, and improve product quality.

Description of drawings

Fig. 1 is a kind of structural representation of existing cooling device;

Fig. 2 is a kind of structural representation of the utility model.

Reference numerals are: die casting mold 1, cooling channel 2, cooling rod 3, water inlet channel 4, water outlet channel 5, silica gel coating 6, sealing plug 7.

detailed description

Below in conjunction with embodiment the utility model is further described. The devices, connection structures and methods involved in the present utility model are all devices, connection structures and methods known in the art unless otherwise specified.

Example 1

As shown in Fig. 2: a device for cooling the thick and large section of the die casting, including a die casting mold 1, and a cooling channel 2 is provided on the die casting mold corresponding to the thick and large section of the die casting. The cooling channel is provided with a cooling rod 3 made of red copper, the head end of the cooling rod is provided with a silica gel coating 6, and the outer diameter of the cooling rod and the inner diameter of the cooling channel are too tightly fitted. Moreover, a water inlet channel 4 and a water outlet channel 5 are provided at the end of the cooling rod on the die casting mold. The water inlet channel and the water outlet channel are respectively located on both sides of the end of the cooling rod. An inspection installation hole is provided at the end of the cooling channel on the die casting mold, and a sealing plug 7 is arranged in the inspection installation hole.

The working principle of the device in this embodiment is: when the molten metal is poured into the mold at a high temperature of 630°C and molded under high speed and high pressure, the liquid metal and the mold have intense heat exchange, and a large amount of heat is absorbed by the mold. The cooling rod and the corresponding part of the mold are closely matched. Copper has excellent thermal conductivity. The heat of the mold will be absorbed by the copper rod. The end of the cooling rod is immersed in cooling water, and the heat of the cooling rod is taken away by the cooling water. The temperature of the rod is always kept low, and each cycle of heat absorption and heat release takes away the heat from the corresponding part of the mold, which realizes the purpose of cooling the thick and large section of the casting.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any simple modifications, changes and equivalent structural transformations made to the above embodiments according to the technical essence of the present utility model still belong to The scope of protection of the technical solution of the utility model.

Claims (6)

1. carry out the device cooled down for die casting thick and large section, including die-casting mould (1), at described die-casting mould On corresponding to being provided with cooling duct (2) at die casting thick and large section, it is characterised in that: be provided with in described cooling duct cooling rod (3), And the end being positioned at described cooling rod on die-casting mould is provided with intake tunnel (4) and exhalant canal (5).

A kind of device carrying out for die casting thick and large section cooling down, it is characterised in that described in enter Aquaporin and exhalant canal lay respectively at the both sides of cooling rod end.

A kind of device carrying out for die casting thick and large section cooling down, it is characterised in that described cold But the external diameter of rod was tight fit with the internal diameter of cooling duct.

A kind of device carrying out for die casting thick and large section cooling down, it is characterised in that described cold But the head end of rod is provided with silica-gel coating (6).

5. a kind of device carrying out for die casting thick and large section cooling down as described in one of claim 1-4, it is characterised in that Described cooling rod is red copper bar.

A kind of device carrying out for die casting thick and large section cooling down, it is characterised in that described pressure On casting die, the end of cooling duct is provided with maintenance installing hole, is provided with seal plug (7) in described maintenance installing hole.