Cooling pipeline of integrated die-casting die

Abstract

A cooling pipeline of an integrated die-casting die comprises a die, the cooling pipeline is arranged on a die core of the die, the cooling pipeline comprises a plurality of blind holes and a plurality of connecting channels, the blind holes are formed in the die core and extend downwards from the upper end face of the die core, the connecting channels extend horizontally, and each connecting channel is at least communicated with three blind holes. The distance between the hole bottom of the blind hole and the surface of the mold core cavity is 30-40mm, the connecting channel is higher than the hole bottom of the blind hole, the distance between the connecting channel and the hole bottom of the blind hole is 30-80mm, the blind hole comprises an inlet channel, middle channels and an outlet channel, a waterproof sheet is arranged in each middle channel, and a waterproof sheet is arranged in each outlet channel. And a passage for a cooling medium to circulate is reserved between the water-proof sheet and the hole bottom and between the water-proof sheet and the hole walls on the two sides.

Description

Technical Field

[0001] This utility model relates to the field of mold cooling, specifically to a cooling pipeline for an integrated die-casting mold. Background Technology

[0002] To ensure temperature balance within the mold cavity, corresponding cooling pipes are typically installed on the mold. The cooling medium circulating within these pipes cools the mold cavity. In existing technology, such as the utility model patent "Mold" with authorization publication number CN208359407U, multiple adjusting channels extending laterally and spaced longitudinally along the fixed mold insert are provided. Above these adjusting channels, multiple first and second distribution channels are longitudinally arranged. The first distribution channels are connected to the adjusting channels via a first connecting channel, and the second distribution channels are connected to the first distribution channels via a second connecting channel. This cooling pipe configuration is relatively complex and difficult to manufacture. Furthermore, the adjustment channel is only 10-15mm away from the cavity surface. The heat exchange distance between the adjustment channel and the cavity is small. The temperature of the product cavity when it is filled with molten aluminum is 680-700℃, while the temperature of the cooling pipe is 20-200℃. The temperature difference between the two is large, and very intense heat exchange will occur. Therefore, under the action of thermal stress and thermal fatigue, the cooling pipe is prone to mold cracking and chipping, reducing the service life and number of molds. Moreover, after the mold core cracks, the entire insert needs to be replaced, resulting in high maintenance costs. Summary of the Invention

[0003] To address the aforementioned problems, this utility model provides a cooling pipe for an integrated die-casting mold. By installing a water-blocking plate inside the blind hole, the cooling medium can flow within the blind hole. At the same time, the bottom of the blind hole is closer to the cavity. The cooling medium flows through the bottom of the blind hole and exchanges heat with the cavity, resulting in a smaller area for intense heat exchange and a lower risk of mold cracking or chipping.

[0004] The technical solution of this utility model is as follows: a cooling pipe system for an integrated die-casting mold, comprising a mold, wherein a cooling pipe system is provided on the mold core, the cooling pipe system includes a plurality of blind holes extending downward from the upper end of the mold core and a plurality of horizontally extending connecting channels, each connecting channel connecting at least three blind holes, the bottom of the blind hole being 30-40 mm away from the surface of the mold core cavity, the connecting channels being higher than the bottom of the blind holes and 30-80 mm away from the bottom of the blind holes, the blind holes including an inlet channel, an intermediate channel and an outlet channel, each intermediate channel being provided with a water baffle, and a passage for the cooling medium to flow between the water baffle and the bottom of the hole and the side walls of the hole.

[0005] Preferably, each opening of the intermediate channel is provided with a plug, and the water-proof plate is fixed to the plug.

[0006] Preferably, the inlet channel and the outlet channel are located on both sides of the middle channel.

[0007] Preferably, the distance between the water-blocking plate and the bottom of the hole is 8-12 mm, and the distance between the water-blocking plate and the two side hole walls is 0.05-0.2 mm.

[0008] Preferably, the diameter of the blind hole is 18–22 mm.

[0009] Preferably, the diameter of the connecting channel is 12-16 mm.

[0010] The advantages of this utility model are:

[0011] 1. The connection channel of the cooling pipe of this utility model is far from the surface of the mold cavity, while the bottom of the blind hole is close to the surface of the mold cavity. This utility model mainly relies on the cooling medium flowing through the bottom of the blind hole to exchange heat with the mold cavity, thereby reducing the area of ​​intense heat exchange and improving the service life of the mold.

[0012] 2. Since the part of this utility model with intense heat exchange is a blind hole, if the blind hole cracks due to intense heat exchange, it is only necessary to weld and plug the cracked point, which does not affect the overall mold problem. There is no need to remake the mold core, and the repair cost is low. Attached Figure Description

[0013] Figure 1 This is a first sectional view of the present invention;

[0014] Figure 2 This is a second sectional view of the present invention. Detailed Implementation

[0015] A cooling pipe system for an integrated die-casting mold includes a mold 1. A cooling pipe system is provided on the mold core 2 of the mold 1. The cooling pipe system includes several blind holes 4 extending downwards from the upper end of the mold core 2, and multiple horizontally extending connecting channels 3. Each connecting channel 3 connects to at least three blind holes 4. In this embodiment, a total of 37 blind holes 4 and 10 connecting channels 3 are provided. The number and position of the blind holes 4 and connecting channels 3 are set according to specific requirements. The bottom of the blind hole 4 is 30-40mm away from the cavity surface of the mold core 2, ensuring that the bottom of the blind hole 4 is close to the cavity surface, allowing for intense heat exchange between the cooling medium at the bottom of the hole and the cavity surface. The connecting channels 3 are higher than the bottom of the blind holes 4, and the distance from the bottom of the blind holes 4 is 30-80mm, preventing the connecting channels 3 from being close to the cavity surface, thereby avoiding intense heat exchange between the cooling medium in the connecting channels 3 and the cavity surface. The blind hole 4 includes an inlet channel 41, an intermediate channel 42, and an outlet channel 43. The inlet channel 41 and the outlet channel 43 are located on both sides of the intermediate channel 42. The cooling medium enters through the inlet channel 41, flows through the intermediate channel 42, and then flows out through the inlet channel 41, circulating. Each opening of the intermediate channel 42 is equipped with a plug 8, and each intermediate channel 42 contains a water-blocking plate 7, which is fixed to the plug 8. Fixing the water-blocking plate 7 to the plug 8 facilitates the installation of the water-blocking plate 4. A passageway for the cooling medium to flow is left between the water-blocking plate 7 and the bottom of the hole and the side walls of the hole. The diameter of the blind hole 4 is 18–22 mm, the diameter of the connecting channel 3 is 12–16 mm, the distance between the water-blocking plate 7 and the bottom of the hole is 8–12 mm, and the distance between the water-blocking plate 7 and the side walls of the hole is 0.05–0.2 mm. This arrangement ensures that the flow rate of the cooling medium is sufficient to meet the cooling requirements of the mold cavity.

[0016] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications made to the present utility model by those skilled in the art without departing from the spirit of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A cooling pipe system for an integrated die-casting mold, comprising a mold (1), wherein a cooling pipe system is provided on the mold core (2) of the mold (1), characterized in that: The cooling pipeline includes several blind holes (4) extending downward from the upper end of the mold core (2) and multiple horizontally extending connecting channels (3). Each connecting channel (3) connects at least three blind holes (4). The bottom of the blind hole (4) is 30-40 mm away from the cavity surface of the mold core (2). The connecting channel (3) is higher than the bottom of the blind hole (4) and is 30-80 mm away from the bottom of the blind hole (4). The blind hole (4) includes an inlet channel (41), an intermediate channel (42), and an outlet channel (43). A water baffle (7) is provided in each intermediate channel (42). A passage for the cooling medium to flow is left between the water baffle (7) and the bottom and side walls of the hole.

2. The cooling pipeline of an integrated die-casting mold according to claim 1, characterized in that: The openings of the intermediate channel (42) are all provided with plugs (8), and the water-proof plate (7) is fixed on the plugs (8).

3. The cooling pipeline of an integrated die-casting mold according to claim 1, characterized in that: The import channel (41) and the export channel (43) are located on both sides of the intermediate channel (42).

4. The cooling pipeline of an integrated die-casting mold according to claim 1, characterized in that: The distance between the water-blocking plate (7) and the bottom of the hole is 8-12 mm, and the distance between it and the two side walls of the hole is 0.05-0.2 mm.

5. The cooling pipeline of an integrated die-casting mold according to claim 1, characterized in that: The diameter of the blind hole (4) is 18-22 mm.

6. The cooling pipeline of an integrated die-casting mold according to claim 1, characterized in that: The diameter of the connecting channel (3) is 12-16 mm.

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