CN114346206A - Die casting die and die casting method of product - Google Patents

Abstract

The invention relates to a die-casting die and a die-casting method for a product. The die-casting die comprises a first die base, a second die base and an extrusion assembly. The second die base is matched with the first die base. When the mold seat is closed, a cavity is formed between the first mold seat and the second mold seat, and the mold cavity is used for the injection of the molten first metal liquid, and the side of the first mold seat facing the second mold seat is also provided There is an auxiliary cavity communicated with the cavity, the auxiliary cavity corresponds to the position of the product blank to be repaired, and the auxiliary cavity is used to accommodate the molten second molten metal; the extrusion component is used to pass through the first die seat and extend into The auxiliary cavity is used to extrude the semi-molten second molten metal into the cavity so that the semi-molten second molten metal and the semi-molten first molten metal are integrated into one, which effectively solves the problem of inconsistency in the wall thickness of the molding geometry. When the product is uniform, there is a problem of sand holes inside the product caused by inconsistent cooling and shrinkage of some parts of the product.

Description

Die-casting molds and die-casting methods for products

technical field

The invention relates to the technical field of die casting, in particular to a die casting method for a die casting mold and a product.

Background technique

The cold chamber die casting machine pours the molten metal liquid into the injection chamber (feeding barrel) by feeding the soup with a spoon, and then pushes the metal liquid into the mold at a high speed with the injection piston (hammer head), while maintaining a certain pressure. A casting equipment that cools and solidifies to obtain finished products. However, when molding products with uneven wall thickness, some parts of the product are prone to sand holes due to inconsistent cooling and molding shrinkage, so it is difficult to ensure the density of the product and affect the yield of the product.

SUMMARY OF THE INVENTION

Based on this, the present invention provides a die-casting mold and a die-casting method for the product that can effectively solve the problem of sand holes in the product caused by inconsistent cooling and molding shrinkage in some parts of the product when molding products with uneven wall thicknesses .

A die-casting mold, comprising:

the first mold base;

The second mold base is matched with the first mold base. When the first mold base and the second mold base are clamped, a space between the first mold base and the second mold base is formed. A cavity, the cavity is used for the injection of the molten first molten metal, and after the molten first molten metal is cooled, the semi-molten first molten metal that constitutes the product blank can be obtained, and the first molten molten metal can be obtained. The side of the die base facing the second die base is also provided with an auxiliary cavity communicated with the cavity, the auxiliary cavity corresponds to the position of the to-be-repaired part of the product blank, and the auxiliary cavity is used for accommodating molten second molten metal, the molten second molten metal can be cooled to obtain a semi-molten second molten metal; and

an extrusion assembly for passing through the first die base and extending into the auxiliary cavity, so as to extrude the semi-molten second molten metal into the cavity so as to make the semi-molten The second molten metal and the semi-molten first molten metal are integrated into one, and the integrated semi-molten first molten metal and the semi-molten second molten metal can be cooled and solidified to obtain a product .

In one embodiment, the number of the auxiliary cavities and the extrusion components is multiple, and the multiple auxiliary cavities are arranged at intervals on the side of the first die base facing the second die base, The plurality of extruding assemblies correspond to the plurality of auxiliary cavities in one-to-one correspondence, respectively.

In one embodiment, the extrusion assembly includes:

a driving part, the driving part is disposed on the side of the first die base away from the second die base; and

A thimble, the thimble is accommodated in the first die base, the first end of the thimble is connected with the driving member, and the second end of the thimble passes through the first die base and can extend into the In the auxiliary cavity, the driving member is used to drive the thimble to move along the axial direction of the driving member, so that the thimble extends into the auxiliary cavity and squeezes the semi-molten second molten metal into the cavity so as to fuse the semi-molten second molten metal with the semi-molten first molten metal.

In one embodiment, the extrusion assembly further includes a connecting rod, the connecting rod is accommodated in the first die base, and two ends of the connecting rod are respectively connected with the driving member and the ejector pin. The first end is connected, and the driving member is used to drive the thimble to move along the axial direction of the driving member through the connecting rod.

In one embodiment, the die-casting mold further includes a mounting seat, the mounting seat is disposed on a side of the first mold seat away from the second mold seat, and the driving member is embedded in the mounting seat Inside.

In one embodiment, the driving member is an oil cylinder, the oil cylinder includes a cylinder block and a push rod, the cylinder block is disposed on a side of the first mold base away from the second mold base, and the push rod One end of the rod protrudes into the cylinder, the other end of the push rod protrudes into the first die base and is connected with the first end of the ejector pin, and the cylinder is used to pass the push rod The thimble is driven to move along the axial direction of the driving member.

In one embodiment, the cylinder body is provided with an oil inlet and an oil outlet, the extrusion assembly further comprises a first oil delivery pipe and a second oil delivery pipe, the die-casting mold further comprises an oil circuit splitter, the A first oil inlet port and a first oil outlet port are arranged on the oil circuit splitter, one end of the first oil delivery pipe is connected with the first oil outlet port of the oil circuit splitter, and the other end of the first oil delivery pipe is connected to the first oil outlet port of the oil circuit splitter. The oil inlet of the cylinder block is connected, one end of the second oil pipe is connected to the first oil inlet port of the oil circuit splitter, and the other end of the second oil pipe is connected to the oil outlet of the cylinder block , the hydraulic oil in the oil circuit shunt can enter the cylinder through the first oil outlet of the oil circuit shunt, the first oil pipe, and the oil inlet of the cylinder body in sequence, and all the The hydraulic oil in the cylinder body can also flow out of the cylinder body through the oil outlet of the cylinder body and return to the oil circuit branch in sequence from the second oil pipe and the first oil inlet port of the oil circuit splitter inside the piece to form a circulating flow of the hydraulic oil.

In one embodiment, a second oil inlet port and a second oil outlet port are further provided on the oil circuit splitting member, and the second oil inlet port is used for injecting hydraulic oil into the oil circuit splitting member , the second oil outlet port is used for the hydraulic oil in the oil circuit splitting member to flow out to the outside.

In one embodiment, a side of the second mold base facing away from the first mold base is provided with a feeding port communicated with the cavity, and the feeding port is used for supplying the molten first mold base. A molten metal enters the cavity.

A die-casting method for a product, comprising the following steps:

Provide the above-mentioned die-casting molds;

Clamp the first mold base and the second mold base, and then inject the molten first molten metal and the molten second molten metal into the cavity and the auxiliary cavity respectively;

After the first molten metal to be melted and the molten second molten metal are cooled to form the semi-molten first molten metal and the semi-molten second molten metal, respectively, the extrusion assembly is passed through The first die base extends into the auxiliary cavity to extrude the semi-molten second molten metal into the cavity so as to make the semi-molten second molten metal and the semi-molten The first molten metal fuses into one; and

After the semi-molten first molten metal and the semi-molten second molten metal to be integrated into one are cooled and solidified to form a product, the first mold base and the second mold base are opened, and then the mold is opened. The product is removed from the cavity.

In the die-casting mold provided by the present application, after the molten first molten metal and the molten second molten metal are injected into the cavity and the auxiliary cavity respectively for cooling for a period of time, the molten first molten metal can be cooled to obtain a semi-molten component that constitutes a product blank. The first molten metal, and the molten second molten metal can be cooled to form a semi-molten second molten metal. At this time, the semi-molten second metal is passed through the first die seat and extended into the auxiliary cavity through the extrusion assembly. The liquid is squeezed into the cavity so that the semi-molten second molten metal and the semi-molten first molten metal are integrated into one, and the semi-molten first molten metal and the semi-molten second molten metal to be integrated are cooled and solidified After that, the product can be finally obtained. Therefore, the die-casting die of the present application extrudes the semi-molten second molten metal in the auxiliary cavity into the cavity through the extrusion assembly, so that the semi-molten second molten metal and the semi-molten first molten metal can be separated from each other. The molten metal is integrated into one, thus realizing the effective repair of the parts to be repaired of the product blank, and improving the filling fullness of the molten metal in the parts to be repaired, thus effectively solving the problem of the inconsistency of the wall thickness of the forming geometry. When the product is uniform, the problem of sand holes inside the product caused by inconsistent cooling and molding shrinkage in some parts of the product ensures the density of the product and effectively improves the yield of the product.

Description of drawings

1 is a cross-sectional view of a die-casting mold in one embodiment;

Fig. 2 is the enlarged schematic diagram of A place in Fig. 1;

3 is a schematic structural diagram of a product blank in an embodiment;

4 is a schematic diagram of a partial structure of a die-casting mold in an embodiment;

FIG. 5 is a schematic structural diagram of a die-casting mold in an embodiment;

6 is a cross-sectional view of another position of the die-casting mold in one embodiment;

7 is a cross-sectional view of another position of the die casting mold in one embodiment.

Detailed ways

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the related drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

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 intervening elements may also be present. 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 art to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention.

As shown in FIG. 1 and FIG. 2 , the present application provides a die-casting mold 100 , the die-casting mold 100 includes a first die base 110 , a second die base 120 and an extrusion assembly 130 , the second die base 120 and the first die When the first mold seat 110 and the second mold seat 120 are closed, a cavity 140 is formed between the first mold seat 110 and the second mold seat 120, and the mold cavity 140 is used for the first mold seat 110 to be melted. After the molten metal is injected, a semi-molten first molten metal that constitutes the product blank 200 can be obtained after the molten first molten metal is cooled. Auxiliary cavity 150 communicated with each other. The auxiliary cavity 150 corresponds to the position of the to-be-repaired part of the product blank 200. The auxiliary cavity 150 is used to accommodate the molten second molten metal. After the molten second molten metal is cooled, a semi-molten first molten metal can be obtained. Two molten metal. The extrusion assembly 130 is used to pass through the first die base 110 and extend into the auxiliary cavity 150 to extrude the semi-molten second molten metal into the cavity 140 so as to make the semi-molten second molten metal and the semi-molten first molten metal. A molten metal is fused into one, and the integrated semi-molten first molten metal and the semi-molten second molten metal can be cooled and solidified to obtain a product.

In the die-casting mold 100 provided by the present application, after the molten first molten metal and the molten second molten metal are injected into the cavity 140 and the auxiliary cavity 150 for cooling for a period of time, the molten first molten metal can be cooled to obtain a product blank 200 of the semi-molten first molten metal, and the molten second molten metal can be cooled to form a semi-molten second molten metal. The semi-molten second molten metal is extruded into the cavity 140 so that the semi-molten second molten metal and the semi-molten first molten metal are fused together, and the semi-molten first molten metal and the semi-molten first molten metal to be integrated are integrated. The final product can be obtained after the molten second molten metal is cooled and solidified. Therefore, the die-casting mold 100 of the present application extrudes the semi-molten second molten metal in the auxiliary cavity 150 into the cavity 140 through the extrusion component 130 to make the The molten second molten metal and the semi-molten first molten metal are integrated into one, thereby realizing the effective repair of the to-be-repaired part of the product blank 200 and improving the filling and fullness of the molten metal at the to-be-repaired part of the product blank 200 Therefore, it effectively solves the problem of sand holes in the product caused by inconsistent cooling and shrinkage of some parts of the product when molding products with uneven wall thickness, ensuring the density of the product and effectively improving the quality of the product. Product yield.

The number of the auxiliary cavities 150 and the extrusion components 130 are both multiple, the multiple auxiliary cavities 150 are arranged at intervals on the side of the first die base 110 facing the second die base 120 , the multiple extrusion components 130 are respectively connected with the multiple auxiliary cavities 150 are in one-to-one correspondence, so as to improve the supplementary injection efficiency of the semi-molten molten metal in the cavity 140 .

As shown in FIG. 3 , in this embodiment, the product blank 200 has a plurality of cantilever arms 210 arranged at intervals, the plurality of auxiliary cavities 150 correspond to the positions of the plurality of cantilever arms 210 respectively, and the plurality of extrusion assemblies 130 respectively One-to-one correspondence with the plurality of auxiliary cavities 150 .

Further, the number of the cantilever arms 210 is four, and the product blank 200 further includes four support arms 220 connected end to end in turn. The support arms 220 are arranged in parallel, and a cantilever 210 is vertically connected to the middle of each support arm 220 . The number of the auxiliary cavities 150 and the extrusion components 130 are both four, the four auxiliary cavities 150 are arranged at intervals on the side of the first die base 110 facing the second die base 120 , the four extrusion components 130 are respectively connected with the four auxiliary cavities 150 one-to-one correspondence.

It should be noted that, in this embodiment, the first molten metal and the second molten metal may be molten metal of the same material, such as molten aluminum and molten copper. It can be understood that in other embodiments, the first molten metal The molten metal and the second molten metal can also be molten metal of different materials, as long as it is ensured that the two can be fused together after semi-melting.

As shown in FIG. 2 , the extrusion assembly 130 includes a driving member 131 and an ejector pin 132 . The driving member 131 is disposed on the side of the first mold base 110 away from the second mold base 120 ; the ejector pin 132 is accommodated in the first mold base 110 , and The first end 1321 of the ejector pin 132 is connected with the driving member 131 , the second end 1322 of the ejector pin 132 passes through the first die base 110 and can extend into the auxiliary cavity 150 , and the driving member 131 is used for driving the ejector pin 132 along the axis of the driving member 131 The thimble 132 is moved to the auxiliary cavity 150 and the semi-molten second metal liquid is squeezed into the mold cavity 140 so that the semi-molten second metal liquid and the semi-molten first metal liquid are integrated into one body.

The extrusion assembly 130 further includes a connecting rod 133, the connecting rod 133 is accommodated in the first die base 110, and two ends of the connecting rod 133 are respectively connected with the driving member 131 and the first end 1321 of the ejector pin 132, and the driving member 131 is used for passing through The connecting rod 133 drives the ejector pin 132 to move along the axial direction of the driving member 131 .

Specifically in this embodiment, the driving member 131 is an oil cylinder, and the oil cylinder includes a cylinder block 1311 and a push rod 1312. The cylinder block 1311 is disposed on the side of the first die base 110 away from the second die base 120, and one end of the push rod 1312 extends into the To the cylinder 1311 , the other end of the push rod 1312 extends into the first die base 110 and is connected to the first end 1321 of the ejector pin 132 . move. Specifically, the two ends of the connecting rod 133 are respectively connected with one end of the push rod 1312 exposed to the cylinder 1311 and the first end 1321 of the ejector pin 132 to realize the connection between the ejector pin 132 and the push rod 1312 .

As shown in FIG. 4 , the cylinder block 1311 is provided with an oil inlet 1313 and an oil outlet 1314 , the extrusion assembly 130 further includes a first oil pipe 135 and a second oil pipe 136 , and the die-casting mold 100 further includes an oil circuit divider 134 . A first oil inlet port 1341 and a first oil outlet port 1342 are provided on the circuit splitter 134 , one end of the first oil delivery pipe 135 is connected to the first oil outlet port 1342 of the oil circuit splitter 134 , and the other end of the first oil delivery pipe 135 is connected to the first oil outlet port 1342 of the oil circuit splitter 134 . The oil inlet 1313 of the cylinder block 1311 is connected, one end of the second oil pipe 136 is connected to the first oil inlet port 1341 of the oil circuit splitter 134, and the other end of the second oil pipe 136 is connected to the oil outlet 1314 of the cylinder block 1311. The hydraulic oil in the circuit splitter 134 can enter the cylinder block 1311 through the first oil outlet 1342 of the oil circuit splitter 134, the first oil pipe 135, and the oil inlet 1313 of the cylinder block 1311 in sequence, and the hydraulic pressure in the cylinder block 1311 The oil can also flow out of the cylinder block 1311 through the oil outlet 1314 of the cylinder block 1311 and flow back into the oil circuit splitter 134 in turn by the second oil delivery pipe 136 and the first oil inlet port 1341 of the oil circuit divider 134 to form a circulation of hydraulic oil. flow, so as to provide power for the hydraulic drive of the oil cylinder.

Further, the number of the extrusion assembly 130 , the first oil inlet port 1341 and the first oil outlet port 1342 is multiple, the oil inlet 1313 of the cylinder block 1311 of the multiple extrusion assemblies 130 , the first oil delivery pipe 135 and the oil The plurality of first oil outlet ports 1342 of the flow splitting member 134 correspond to one another, the oil outlet ports 1314 of the cylinders 1311 of the plurality of extrusion assemblies 130 , the second oil delivery pipe 136 and the plurality of first inlet ports 134 of the oil flow splitting member 134 . The oil ports 1341 are in one-to-one correspondence.

As shown in FIG. 4 , a second oil inlet port 1343 and a second oil outlet port 1344 are also provided on the oil circuit splitting member 134 . The second oil inlet port 1343 is used for injecting hydraulic oil into the oil circuit splitting member 134 . The second oil outlet port 1344 is used for the hydraulic oil in the oil supply channel dividing member 134 to flow out to the outside.

As shown in FIG. 5 , the die-casting mold 100 further includes a mounting seat 160 . The mounting seat 160 is disposed on the side of the first mold seat 110 away from the second mold seat 120 , and the driving member 131 is embedded in the mounting seat 160 .

Specifically, the cylinder block 1311 of the oil cylinder is embedded in the mounting seat 160 , the oil circuit flow divider 134 is disposed on the outer side wall of the mounting seat 160 , and the end of the first oil delivery pipe 135 away from the oil circuit flow divider 134 passes through the side wall of the mounting seat 160 . It extends into the mounting seat 160 and is connected to the oil inlet 1313 of the cylinder block 1311 . One end of the second oil delivery pipe 136 is connected to the first oil inlet port 1341 of the oil circuit splitter 134 , and the second oil delivery pipe 136 is far away from the oil circuit splitter 134 . One end extends into the mounting seat 160 through the side wall of the mounting seat 160 and is connected to the oil outlet 1314 of the cylinder block 1311 .

As shown in FIG. 6 , the side of the second die base 120 facing the first die base 110 is provided with a connecting column 170 , and the first die base 110 is slidably sleeved on the connecting column 170 to facilitate the realization of the first die base 110 and the first die base 110 . Mold clamping and mold opening between the second mold bases 120 . Further, the number of the connecting columns 170 is multiple, and the multiple connecting columns 170 are arranged on the outer edge of the second die base 120 at intervals. Specifically, in this embodiment, the number of the connecting columns 170 is four, and the four connecting columns 170 The spaces are arranged at four corners of the second die base 120 .

As shown in FIG. 7 , the side of the second die base 120 away from the first die base 110 is provided with a feeding port 180 communicating with the cavity 140 , and the feeding port 180 is used for the molten first molten metal to enter the cavity. 140.

As shown in FIG. 1 , further, the first mold base 110 includes a first mold plate 112 and a first mold core 114 , the first mold core 114 is embedded in the side of the first mold plate 112 facing the second mold base 120 , and the second mold core 114 is embedded in the first mold base 112 . The mold base 120 includes a second mold plate 122 and a second mold core 124. The second mold plate 122 is matched with the first mold plate 112. The second mold core 124 is embedded in the side of the second mold plate 122 facing the first mold base 110. When the second mold 122 is clamped with the first mold 112 , a cavity 140 is formed between the first mold core 114 and the second mold core 124 .

1 and 2 at the same time, the present application also provides a die casting method for a product, and the die casting method for the product includes the following steps:

S100, the die-casting mold 100 is provided.

S200 , the first mold base 110 and the second mold base 120 are clamped, and then the molten first molten metal and the molten second molten metal are injected into the cavity 140 and the auxiliary cavity 150 respectively.

S300 , after the first molten metal to be melted and the second molten metal to be molten are cooled to form a semi-molten first molten metal and a semi-molten second molten metal, respectively, the extrusion assembly 130 is passed through the first die base 110 to extend into the auxiliary cavity 150 to squeeze the semi-molten second molten metal into the cavity 140 so that the semi-molten second molten metal and the semi-molten first molten metal are integrated into one.

S400 , after the semi-molten first molten metal and the semi-molten second molten metal to be integrated into one are cooled and solidified to form a product, mold the first mold base 110 and the second mold base 120 , and then remove the product from the cavity Take out within 140.

The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, all It is considered to be the range described in this specification.

The above examples only represent the preferred embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as limiting the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (10)

1. A die casting mold, comprising:

a first die holder;

the second die holder is matched with the first die holder, when the first die holder and the second die holder are assembled, a cavity is formed between the first die holder and the second die holder, the cavity is used for injecting molten first metal liquid, the molten first metal liquid can be obtained after being cooled to form semi-molten first metal liquid of a product blank, an auxiliary cavity communicated with the cavity is further arranged on one side of the first die holder, which faces the second die holder, corresponds to the position of a part to be repaired of the product blank, the auxiliary cavity is used for containing the molten second metal liquid, and the molten second metal liquid can be obtained after being cooled; and

and the extruding assembly is used for penetrating through the first die holder and extending into the auxiliary cavity so as to extrude the semi-molten second metal liquid into the die cavity, so that the semi-molten second metal liquid and the semi-molten first metal liquid are fused into a whole, and the semi-molten first metal liquid and the semi-molten second metal liquid which are fused into a whole can be cooled and solidified to obtain a product.

2. The die-casting die as claimed in claim 1, wherein the number of the auxiliary cavities and the number of the extrusion assemblies are both plural, the plural auxiliary cavities are arranged at intervals on one side of the first die holder facing the second die holder, and the plural extrusion assemblies are respectively in one-to-one correspondence with the plural auxiliary cavities.

3. The die casting mold of claim 1, wherein the pressing assembly comprises:

the driving piece is arranged on one side, away from the second die holder, of the first die holder; and

the thimble is accommodated in the first die holder, a first end of the thimble is connected with the driving piece, a second end of the thimble penetrates through the first die holder and can extend into the auxiliary cavity, and the driving piece is used for driving the thimble to move along the axial direction of the driving piece so as to enable the thimble to extend into the auxiliary cavity and extrude the semi-molten second metal liquid into the die cavity, so that the semi-molten second metal liquid and the semi-molten first metal liquid are fused into a whole.

4. The die casting mold as claimed in claim 3, wherein the extrusion assembly further comprises a connecting rod, the connecting rod is accommodated in the first mold base, two ends of the connecting rod are respectively connected with the driving member and the first end of the ejector pin, and the driving member is configured to drive the ejector pin to move along the axial direction of the driving member through the connecting rod.

5. The die-casting die as claimed in claim 3, further comprising a mounting seat, wherein the mounting seat is arranged on one side of the first die holder, which faces away from the second die holder, and the driving member is embedded in the mounting seat.

6. The die-casting die as claimed in claim 3, wherein the driving member is an oil cylinder, the oil cylinder includes a cylinder body and a push rod, the cylinder body is disposed on a side of the first die holder away from the second die holder, one end of the push rod extends into the cylinder body, the other end of the push rod extends into the first die holder and is connected with the first end of the thimble, and the cylinder body is configured to drive the thimble to move along the axial direction of the driving member through the push rod.

7. The die casting mold of claim 6, wherein the cylinder body is provided with an oil inlet and an oil outlet, the extrusion assembly further comprises a first oil delivery pipe and a second oil delivery pipe, the die casting mold further comprises an oil path shunt member, the oil path shunt member is provided with a first oil inlet port and a first oil outlet port, one end of the first oil delivery pipe is connected with the first oil outlet port of the oil path shunt member, the other end of the first oil delivery pipe is connected with the oil inlet of the cylinder body, one end of the second oil delivery pipe is connected with the first oil inlet port of the oil path shunt member, the other end of the second oil delivery pipe is connected with the oil outlet of the cylinder body, hydraulic oil in the oil path shunt member can sequentially enter the cylinder body through the first oil outlet port of the oil path shunt member, the first oil delivery pipe and the oil inlet of the cylinder body, and the hydraulic oil in the cylinder body can flow out of the cylinder body through the oil outlet of the cylinder body, and the second oil delivery pipe and the first oil inlet interface of the oil way flow dividing piece sequentially flow back into the oil way flow dividing piece to form the circular flow of the hydraulic oil.

8. The die-casting die as claimed in claim 7, wherein a second oil inlet port and a second oil outlet port are further arranged on the oil way shunting member, the second oil inlet port is used for injecting hydraulic oil into the oil way shunting member, and the second oil outlet port is used for allowing the hydraulic oil in the oil way shunting member to flow out to the outside.

9. The die casting mold as claimed in claim 1, wherein a side of the second mold base facing away from the first mold base is provided with a feed opening communicating with the cavity, the feed opening being for the molten first molten metal to enter the cavity.

10. A method of die casting a product, comprising the steps of:

providing a die casting mould as claimed in any one of claims 1 to 9;

closing the first die holder and the second die holder, and then respectively injecting molten first metal liquid and molten second metal liquid into the die cavity and the auxiliary cavity;

after the first molten metal and the second molten metal are cooled to form semi-molten first molten metal and semi-molten second molten metal respectively, the extrusion assembly penetrates through the first die holder and extends into the auxiliary cavity to extrude the semi-molten second molten metal into the die cavity so as to enable the semi-molten second molten metal to be fused with the semi-molten first molten metal; and

and after the semi-molten first metal liquid and the semi-molten second metal liquid which are fused into a whole are cooled and solidified to form a product, opening the first die holder and the second die holder, and taking out the product from the cavity.

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