CN205464258U - Anti-cold heat sink die-casting mold - Google Patents

Abstract

The utility model discloses a prevent cold material fin die casting die. This mould includes mould, lower mould and mould benevolence, be equipped with on the lower mould and water, water including main watering and first supplementary watering, the supplementary watering of second, the supplementary watering of third and the supplementary watering of fourth, first supplementary watering and the supplementary watering of fourth with the distance of the crossing second side of the first side of mould benevolence is 4mm-7mm respectively, first supplementary watering with the supplementary outside of watering of fourth extends the fifth of a hollow cylinder size respectively and waters, the side of fifth watering is equipped with the egress opening, the egress opening is connected with an supplementary perpendicular shape runner, the supplementary side that erects the shape runner with the second side of mould benevolence flushes mutually, the top of supplementary perpendicular shape runner is less than the first side 1mm-3mm of mould benevolence. The mould can prevent cold charge, improve the product percent of pass.

Description

Anti-cold heat sink die-casting mold

technical field

The utility model relates to the technical field of die-casting moulds, in particular to a die-casting die for an anti-cold heat sink.

Background technique

In the die-casting production process of heat sink products, after the heat sink on both sides of the product is formed, there are many cold lines, and many small holes are formed inside the crystallized product or irregular unevenness and spots are formed on the surface of the product. The pattern with a sense of depth, after the product is sprayed, the surface will form bubbles due to small holes or the surface will show a map-like texture, resulting in unqualified products.

Utility model content

Based on this, it is necessary to provide a heat sink die-casting mold that can prevent cold material and improve product qualification rate.

In order to realize the purpose of the utility model, the utility model adopts the following technical solutions:

A die-casting mold for heat sink of anti-cold material, which includes an upper mold, a lower mold and a mold core, the lower mold is provided with a runner, and the upper mold is provided with an upper mold gate communicating with the runner, The mold core has intersecting first sides and second sides; the runners include main runners and first gates respectively connected with the main runners and extending to the first side of the mold core in sequence. The auxiliary runner, the second auxiliary runner, the third auxiliary runner and the fourth auxiliary runner, the distance between the first auxiliary runner and the fourth auxiliary runner and the second side of the mold core is the same 4mm-7mm, the outside of the first auxiliary runner and the fourth auxiliary runner respectively extend a hollow cylindrical fifth runner, the side of the fifth runner is provided with an outlet, the flow The outlet communicates with an auxiliary vertical gate, the side of the auxiliary vertical gate is flush with the second side of the mold core, and the top of the auxiliary vertical gate is lower than the second side of the mold core. 1mm-3mm on one side.

In some of these embodiments, the lower mold is provided with a vented slag bag, and the vented slag bag communicates with the third side of the mold core, and the third side is connected to the first side relative settings.

In some of the embodiments, the fifth runner communicates with the first auxiliary runner and the fourth auxiliary runner through a connecting channel, and the connecting channel is arranged obliquely.

In some of these embodiments, the end positions of the first auxiliary runner, the second auxiliary runner, the third auxiliary runner and the fourth auxiliary runner connected to the main runner are higher than the ends connected to the main runner. The end position of the mold-kernel connection.

Compared with the prior art, the die-casting mold of the anti-cold material cooling fin described in the utility model:

The runners of the anti-cold heat sink die-casting mold include a main runner and four auxiliary runners, and the distance between the first auxiliary runner and the fourth auxiliary runner and the second side of the mold core is set at 4mm- 7mm, the fifth runner is extended on the first auxiliary runner and the fourth auxiliary runner, the side of the fifth runner is provided with an outlet, the outlet is connected with an auxiliary vertical gate, and the side of the auxiliary vertical gate It is flush with the second side of the mold core, and the top of the auxiliary vertical gate is 1mm-3mm lower than the first side of the mold core, so that during die-casting production, the high-temperature aluminum liquid passes through the main runner and the second Five sprues and auxiliary vertical gates enter the heat sinks on both sides. Since the runners on both sides are supplemented and the distance between the main runner and the heat sinks on both sides is small, the heat sinks on both sides of the product are guaranteed to have high-temperature aluminum liquid. Filling changes the environment for the solidification of molten aluminum, greatly reduces cold lines and small holes on both sides of the product, greatly improves the quality of die-casting products, and improves the pass rate.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the anti-cold heat sink die-casting die described in the embodiment of the present invention;

Fig. 2 is a schematic diagram of the runner structure of the die-casting mold for the anti-cold material heat sink in Fig. 1 .

detailed description

In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. Preferred embodiments of the utility model are provided in the accompanying drawings. However, the invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present utility model more thorough and comprehensive.

It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of this invention. The terminology used in the description of the utility model herein is only for the purpose of describing specific embodiments, and is not intended to limit the utility model.

Please refer to FIG. 1 and FIG. 2 , which is a die-casting mold 100 for cooling heat sink according to a preferred embodiment of the present invention, including an upper mold 10 , a lower mold 20 and a mold core 30 , and the mold core 30 is arranged on the upper mold 10 In the mold cavity between the lower mold 20, the product is formed in the mold core 30 during mold closing. The mold core 30 has a first side 31 and a second side 32 intersecting.

The lower mold 20 is provided with a runner 21, and the upper mold 10 is provided with an upper mold gate 12 connected with the runner 21. The molten metal enters the runner 21 through the upper mold gate 12, and then flows into the mold core 30. forming. The runner 21 includes a main runner 22 and a first auxiliary runner 23 , a second auxiliary runner 24 , a third auxiliary runner 25 and a fourth auxiliary runner 26 respectively communicated with the main runner 22 , the first auxiliary runner 23 . The second auxiliary runner 24 , the third auxiliary runner 25 and the fourth auxiliary runner 26 are sequentially arranged along the first side 31 of the mold core 30 and all extend to the first side 31 of the mold core 30 . In this embodiment, the end positions of the first auxiliary runner 23 , the second auxiliary runner 24 , the third auxiliary runner 25 and the fourth auxiliary runner 26 connected to the main runner 22 are higher than the first auxiliary runner. 23. The end positions of the second auxiliary runner 24, the third auxiliary runner 25, and the fourth auxiliary runner 26 communicate with the mold core 30, so that the molten metal can be smoothly flowed from the first auxiliary runner 23, the second auxiliary runner The runner 24 , the third auxiliary runner 25 and the fourth auxiliary runner 26 enter the mold core 30 .

The distance from the first auxiliary runner 23 and the fourth auxiliary runner 26 to the second side 32 of the mold core 30 is 4mm-7mm respectively, in this embodiment, it is 5mm, wherein the second side 32 and the first side Edge 31 intersects. The outer sides of the first auxiliary runner 23 and the fourth auxiliary runner 26 respectively extend a hollow cylindrical fifth runner 27. In this embodiment, the fifth runner 27 connects with the first auxiliary runner through a connecting channel 28. 23 communicates with the fourth auxiliary runner 26, and the connecting channel 28 is arranged obliquely. The side of the fifth runner 27 is provided with an outflow port, and the outflow port communicates with an auxiliary vertical gate 29, the side of the auxiliary vertical gate 29 is flush with the second side 32 of the mold core 30, and the auxiliary vertical gate The top of the mouth 29 is lower than the first side of the core 30 by 311mm-3mm. Thus, the fifth runner 27 can replenish the high-temperature molten metal on the side, and the fifth runner 27 is arranged in a hollow cylinder shape to prevent the rapid cooling of the molten metal and ensure that the molten metal is in a high-temperature state within a certain period of time.

The lower mold 20 is also provided with a vented slag bag 201 , the vented slag bag 201 communicates with the third side 33 of the mold core 30 , and the third side 33 is opposite to the first side 31 .

During the die-casting production of the above-mentioned mold, the high-temperature aluminum liquid enters the cooling fins on both sides through the main runner, the fifth runner 27 and the auxiliary vertical gate 29. The distance between the side heat sinks is small, ensuring that the heat sinks 41 on both sides of the product 40 are filled with high-temperature aluminum liquid, which changes the environment for the solidification of the aluminum liquid, greatly reduces the cold lines and small holes on both sides of the product 40, and greatly improves the quality of die-casting products , the pass rate has been improved.

The above-mentioned embodiments only express several implementations of the utility model, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the patent scope of the utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (4)

1. an anti-cold burden fin die casting, it is characterised in that include upper die and lower die and die, Described lower mold is provided with running channel, and described upper mold is provided with the upper mold cast gate connected with described running channel, described die There is crossing first side and second side；Described running channel include main running channel and respectively with described main running channel Connection and extend to successively first auxiliary pouring channel of first side of described die, the second auxiliary pouring channel, the 3rd Auxiliary pouring channel and the 4th auxiliary pouring channel, described first auxiliary pouring channel and described 4th auxiliary pouring channel are with described The distance of the second side of die is 4mm-7mm, and described first auxiliary pouring channel waters with described 4th auxiliary The outside in road each extends over the 5th running channel of a hollow cylinder build, and the side of described 5th running channel is provided with outflow Mouthful, described flow export and assists the connection of vertical-shaped cast gate, the side of the vertical-shaped cast gate of described auxiliary and described die Second side flush, the top of the vertical-shaped cast gate of described auxiliary is less than the first side 1mm of described die -3mm。

Anti-cold burden fin die casting the most according to claim 1, it is characterised in that: described lower mold Being provided with aerofluxus cinder ladle, described aerofluxus cinder ladle connects with the 3rd side of described die, described 3rd side with Described first side is oppositely arranged.

Anti-cold burden fin die casting the most according to claim 1, it is characterised in that: the described 5th Running channel is connected with described first auxiliary pouring channel and described 4th auxiliary pouring channel by a connection road, described connection Road is obliquely installed.

Anti-cold burden fin die casting the most according to claim 1, it is characterised in that: described first Auxiliary pouring channel, the second auxiliary pouring channel, the 3rd auxiliary pouring channel and the 4th auxiliary pouring channel are connected with described main running channel The end position that connects higher than described and described die of end position.