Anti-sticking type aluminum liquid high-pressure die casting mold

Abstract

The application relates to the technical field of die casting molds, in particular to an aluminum liquid high-pressure die casting mold with anti-sticking, which comprises a movable mold and a fixed mold oppositely arranged in an up-down mode, the top surface of the fixed mold is provided with a casting cavity, the top surface of the movable mold is provided with a high-pressure casting opening penetratingly arranged in an up-down mode, the bottom surface of the movable mold and the inner surface of the casting cavity are both coated with an anti-sticking coating, the bottom surface of the fixed mold is provided with an ejection cavity communicated with the casting cavity, the bottom surface of the fixed mold is fixedly provided with a mold base, and the ejection cavity is provided with an ejection assembly capable of ascending and descending. The inner wall of the casting cavity is coated with a titanium nitride anti-sticking coating, the anti-sticking coating can effectively hinder the sticking of a formed workpiece to the inner wall of the casting cavity, thereby facilitating demolding and also helping to prolong the service life of the mold.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of die casting mold, in particular to an anti-sticking aluminum liquid high-pressure die casting mold. BACKGROUND

[0002] In modern manufacturing industry, aluminum liquid high-pressure die casting process is widely used in many fields such as automobile, aerospace, electronics and other fields due to its advantages of high efficiency in producing high-precision and complex-shaped aluminum alloy parts. The performance of aluminum liquid high-pressure die casting mold, as the core equipment of the process, directly affects the quality, production efficiency and production cost of the die casting parts.

[0003] Traditional aluminum liquid high-pressure die casting mold has many problems in design and manufacturing. For example, after the aluminum liquid is formed by casting, the formed workpiece needs to be ejected by the ejection mechanism for demolding. However, if the ejection operation is performed after the formed workpiece is fully cooled, it will cause a long waiting time, thereby reducing the manufacturing efficiency of the workpiece. If the ejection operation is performed without waiting for the workpiece to be fully cooled, the ejection mechanism is easy to stick to the surface of the workpiece due to the high temperature of the workpiece surface, thereby making the demolding process not smooth enough, and often manual assistance is needed to take the workpiece off the ejection mechanism, which is quite inconvenient.

[0004] At the same time, the early mold steel material used in the process of aluminum liquid high-pressure die casting shows poor thermal fatigue performance and erosion resistance in the face of high temperature, high pressure and high-speed metal liquid flow scouring and other harsh working conditions. After a certain number of die casting cycles, the surface of the mold cavity is easy to produce thermal cracks, erosion and wear and other failure phenomena, which further causes the workpiece to stick to the inner wall of the cavity, resulting in difficulty in demolding. Therefore, we propose an anti-sticking aluminum liquid high-pressure die casting mold to solve the above problems. SUMMARY

[0005] The present application aims to provide an anti-sticking aluminum liquid high-pressure die casting mold to solve the problems raised in the background.

[0006] The present application is realized by the following technical scheme: an anti-sticking aluminum liquid high-pressure die casting mold, comprising a movable die and a fixed die oppositely distributed in an up-down direction, a casting cavity is formed on the top surface of the fixed die, a high-pressure casting port is formed on the top surface of the movable die in an up-down direction, an anti-sticking coating is coated on the bottom surface of the movable die and the inner surface of the casting cavity, a ejection cavity is formed on the bottom surface of the fixed die and communicates with the casting cavity, a mold seat is fixedly arranged on the bottom surface of the fixed die, and a ejection assembly capable of ascending and descending is arranged in the ejection cavity.

[0007] The ejection assembly comprises an outer ejection sleeve and an inner ejection rod, the inner ejection rod is movably inserted into the inner side of the outer ejection sleeve, and in the casting state, the top surfaces of the outer ejection sleeve and the inner ejection rod are flush with the inner bottom surface of the casting cavity.

[0008] The ejecting cavity is further provided with a driving assembly for driving the ejecting assembly to move up and down, the driving assembly is used for driving the outer ejecting sleeve and the inner ejecting rod to move up alternately, so that the outer positioning sleeve and the inner ejecting rod are in contact with the formed workpiece alternately.

[0009] Optionally, the ejecting assembly further comprises a middle ejecting sleeve, the middle ejecting sleeve is located between the outer ejecting sleeve and the inner ejecting rod, the length of the middle ejecting sleeve is shorter than the length of the inner ejecting rod, and the length of the inner ejecting rod is shorter than the length of the outer ejecting sleeve.

[0010] Optionally, the top surface of the die holder is provided with an abutting rod and an abutting pipe corresponding to the middle ejecting sleeve and the inner ejecting rod respectively, when the bottom surface of the middle ejecting sleeve and the inner ejecting rod is in contact with the top end of the abutting rod and the abutting pipe respectively, the top surface of the middle ejecting sleeve and the inner ejecting rod is flush with the inner bottom surface of the casting cavity.

[0011] The bottom end of the middle ejecting sleeve and the inner ejecting rod is connected with the top surface of the die holder through a reset spring, and the reset spring is in a stretched state in a natural state.

[0012] Optionally, the driving assembly comprises a lifting disc and a linear driving structure for driving the lifting disc to move up and down, the lifting disc is connected with the bottom surface of the outer ejecting sleeve, and the lifting disc is further provided with through holes for the abutting rod and the abutting pipe to pass through.

[0013] Optionally, the lifting disc is movably provided with an ejecting pipe in the through hole for the abutting pipe to pass through, the abutting pipe is located inside the ejecting pipe, the ejecting pipe is in a T shape with a wide top and a narrow bottom, and the length of the ejecting pipe is greater than the thickness of the lifting disc.

[0014] Optionally, the bottom of the ejecting pipe is hingedly provided with a diagonal support part on both sides, the middle section of the diagonal support part is hingedly provided with a sliding block, the sliding block is in sliding cooperation with the bottom surface of the lifting disc, one end of the diagonal support part is exposed to the outside of the lifting disc, and the top of the ejecting cavity is provided with a blocking block corresponding to the two diagonal support parts, when the lifting disc moves upward to abut against the diagonal support part and the blocking block, the ejecting pipe can move upward relative to the lifting disc.

[0015] Optionally, the inner top of the inner ejecting rod is provided with a gas storage cavity, the outer ring wall of the top of the inner ejecting rod is provided with a gas injection hole in communication with the gas storage cavity, the top end of the abutting pipe is provided with a gas injection pipe, the gas injection pipe is inserted into the inner side of the gas storage cavity, the outer surface of the fixed die is provided with a gas nozzle, and the fixed die and the die holder are jointly provided with a gas flow channel for connecting the gas nozzle and the abutting pipe.

[0016] Optionally, a plurality of exhaust holes are formed in the top side wall of the outer ejection sleeve, when the bottom ends of the inner ejection rod and the middle ejection sleeve abut against the lifting disc, the inner wall of the outer ejection sleeve and the bottom wall of the formed workpiece jointly form a heat dissipation cavity, and the air injection holes and the exhaust holes are both communicated with the heat dissipation cavity.

[0017] Optionally, the top inner surface of the outer ejection sleeve is in a wave shape or a pleat shape.

[0018] Optionally, the bottom wall of the mold base is detachably embedded with a mounting portion, and the bottom ends of the abutting rod and the abutting pipe are connected with the mounting portion.

[0019] Compared with the prior art, the present application provides an anti-sticking type aluminum liquid high-pressure die casting mold, which has the following beneficial effects:

[0020] 1. The inner wall of the pouring cavity is coated with a titanium nitride anti-sticking coating, which can effectively prevent the formed workpiece from sticking to the inner wall of the pouring cavity, thereby facilitating demolding and also helping to improve the service life of the mold.

[0021] 2. The ejection assembly has a secondary ejection function, that is, when the inner ejection rod moves upward, the workpiece bottom wall can be separated from the outer ejection sleeve, thereby helping to improve the smoothness of the demolding process and shorten the demolding waiting time, and improving the workpiece manufacturing efficiency.

[0022] 3. The inner ejection rod top can blow out cold air outward, which can cool the local area of the workpiece bottom wall, thereby preventing the inner ejection rod from sticking to the workpiece.

[0023] 4. After the inner ejection rod blows out cold air outward, the cold air not only can increase the air pressure in the heat dissipation cavity, but also can assist the outer ejection sleeve in heat dissipation, thereby further helping to separate the workpiece and the outer ejection sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic view of the present application;

[0025] Figure 2 is a structural transverse sectional view of the present application;

[0026] Figure 3 is a structural longitudinal sectional view of the present application;

[0027] Figure 4 is a sectional view of the ejection state structure of the present application;

[0028] Figure 5 is another sectional view of the ejection state structure of the present application;

[0029] Figure 6 is a schematic view of the ejection assembly and the driving assembly of the present application;

[0030] Figure 7 Figure is a sectional view of the ejection assembly structure of the present application.

[0031] In the figure: 100, movable mold; 101, high-pressure casting port; 200, fixed mold; 201, ejection cavity; 202, mold base; 203, abutting rod; 204, abutting pipe; 205, return spring; 206, blocking block; 207, mounting portion; 208, jet pipe; 209, air nozzle; 300, ejection assembly; 301, outer ejection sleeve; 302, inner ejection rod; 303, middle ejection sleeve; 304, gas storage cavity; 305, jet hole; 306, exhaust hole; 400, driving assembly; 401, lifting disc; 402, linear driving structure; 403, ejection pipe; 404, inclined strut portion; 405, sliding block. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0033] Embodiment one: please refer to Figure 1 - Figure 7 An anti-sticking type high-pressure die casting mold for aluminum liquid, comprising a movable mold 100 and a fixed mold 200 oppositely distributed in an up-down direction, the top surface of the fixed mold 200 is provided with a casting cavity, the top surface of the movable mold 100 is provided with a high-pressure casting port 101 penetratingly arranged in an up-down direction, and the bottom surface of the movable mold 100 and the inner surface of the casting cavity are both coated with an anti-sticking coating layer, which can be a titanium nitride coating layer, having the effect of improving the surface finish of the casting cavity and effectively preventing the sticking of the molded workpiece and the inner cavity of the mold.

[0034] In the specific use of the present embodiment, first, the movable mold 100 is lowered and attached to the fixed mold 200 to close the casting cavity, and then high-temperature aluminum liquid is injected into the casting cavity through the high-pressure casting port 101; at the same time, the water cooling system inside the fixed mold 200 is turned on to accelerate the solidification of the aluminum liquid. Finally, the movable mold 100 is opened and the molded workpiece is taken out to complete the die casting process.

[0035] Further, the bottom surface of the fixed mold 200 is provided with an ejection cavity 201 communicating with the casting cavity, the bottom surface of the fixed mold 200 is fixedly provided with a mold base 202, and the ejection cavity 201 is provided with an ejection assembly 300 capable of being raised and lowered; the ejection cavity 201 is further provided with a driving assembly 400 for pushing the ejection assembly 300 to rise and fall, and finally the molded workpiece is ejected upward by the ejection assembly 300 to realize demolding.

[0036] The structure of the ejection assembly 300 and the driving assembly 400 will be described in detail as follows:

[0037] The ejection assembly 300 comprises an outer ejection sleeve 301 and an inner ejection rod 302, the outer ejection sleeve 301 is in a cylindrical shape, the inner ejection rod 302 is in a circular rod shape, and the inner ejection rod 302 is movably inserted into the inner side of the outer ejection sleeve 301; the ejection assembly 300 further comprises a middle ejection sleeve 303, the middle ejection sleeve 303 is located between the outer ejection sleeve 301 and the inner ejection rod 302, the length of the middle ejection sleeve 303 is shorter than the length of the inner ejection rod 302, and the length of the inner ejection rod 302 is shorter than the length of the outer ejection sleeve 301; and in the casting state, the top surfaces of the outer ejection sleeve 301, the inner ejection rod 302 and the middle ejection sleeve 303 are flush with the inner bottom surface of the casting cavity.

[0038] The top surface of the mold seat 202 is respectively provided with an abutting rod 203 and an abutting pipe 204 corresponding to the middle ejection sleeve 303 and the inner ejection rod 302, wherein the abutting rod 203 is two and oppositely distributed, and the abutting pipe 204 is one, when the bottom surfaces of the middle ejection sleeve 303 and the inner ejection rod 302 respectively abut the top ends of the abutting rod 203 and the abutting pipe 204, the top surfaces of the middle ejection sleeve 303 and the inner ejection rod 302 are flush with the inner bottom surface of the casting cavity.

[0039] Meanwhile, the bottom ends of the middle ejection sleeve 303 and the inner ejection rod 302 are connected with the top surface of the mold seat 202 through a reset spring 205, and in the natural state, the reset spring 205 is in the stretched state. The reset spring 205 is sleeved outside the corresponding abutting rod 203 or abutting pipe 204, the bottom end of the reset spring 205 is connected with the mold seat 202, and the top end thereof is respectively connected with the corresponding middle ejection sleeve 303 or inner ejection rod 302, so that the middle ejection sleeve 303 and the inner ejection rod 302 always have a downward movement trend.

[0040] It should be noted that the outer ejection sleeve 301, the middle ejection sleeve 303 and the inner ejection rod 302 are sequentially and closely abutted, and in this embodiment, the stiffness coefficient of the reset spring 205 needs to be large enough to enable the middle ejection sleeve 303 and the inner ejection rod 302 to overcome their respective friction to move downward.

[0041] In addition, the driving assembly 400 is used to push the outer ejection sleeve 301 and the inner ejection rod 302 to alternately rise, so that the outer ejection sleeve 301 and the inner ejection rod 302 alternately contact with the formed workpiece. Specifically, the driving assembly 400 comprises a lifting disc 401 and a linear driving structure 402 for pushing the lifting disc 401 to move up and down, the linear driving structure 402 adopts a linear slide, the linear slide is fixedly installed on the inner wall of the ejection cavity 201, and the movable end thereof is connected with the lifting disc 401; the bottom surface of the outer ejection sleeve 301 is connected with the lifting disc 401 through a bolt, and the lifting disc 401 is further provided with through holes for the abutting rod 203 and the abutting pipe 204 to pass through.

[0042] In the casting state, the top ends of the outer ejection sleeve 301, the middle ejection sleeve 303 and the inner ejection rod 302 are flush with the bottom surface of the casting cavity, and the bottom ends of the middle ejection sleeve 303 and the inner ejection rod 302 are kept a certain distance from the lifting disc 401. As the lifting disc 401 rises, the inner ejection rod 302 and the middle ejection sleeve 303 can be in contact with the lifting disc 401 in turn and move synchronously under the pushing of the lifting disc 401.

[0043] Further, the top hole in the lifting disc 401 through which the abutting pipe 204 passes is movably provided with an ejection pipe 403, the abutting pipe 204 is located inside the ejection pipe 403, the ejection pipe 403 is in the shape of a T with the top wide and the bottom narrow, and the length of the ejection pipe 403 is greater than the thickness of the lifting disc 401. The profile of the hole through which the ejection pipe 403 passes is consistent with the shape of the ejection pipe 403, and in the initial state, the top surface of the ejection pipe 403 is flush with the top surface of the lifting disc 401.

[0044] In addition, the bottom of the ejection pipe 403 is hingedly provided with a diagonal brace 404, the middle section of the diagonal brace 404 is hingedly provided with a sliding block 405, the sliding block 405 is in sliding fit with the bottom surface of the lifting disc 401, and one end of the diagonal brace 404 is exposed to the outside of the lifting disc 401, and the top of the ejection cavity 201 is provided with a blocking block 206 corresponding to each of the two diagonal braces 404, when the lifting disc 401 moves upward to abut against the diagonal brace 404 and the blocking block 206, the ejection pipe 403 can move upward relative to the lifting disc 401.

[0045] Specifically, the sliding direction of the sliding block 405 and the lifting disc 401 is consistent with the projection direction of the diagonal brace 404 on the bottom surface of the lifting disc 401, that is, as the ejection pipe 403 moves, the sliding block 405 can also slide on the bottom surface of the lifting disc 401. In this embodiment, when the lifting disc 401 continues to rise, the diagonal brace 404 will collide with the blocking block 206, and under the blocking action of the blocking block 206, the diagonal brace 404 will rotate, so that the ejection pipe 403 can move upward relative to the lifting disc 401, so that the top surface of the inner ejection rod 302 is higher than the top surface of the outer ejection sleeve 301.

[0046] In addition, the bottom wall of the mold seat 202 is detachably embedded with a mounting portion 207, and the bottom ends of the abutting rod 203 and the abutting pipe 204 are connected with the mounting portion 207. The mounting portion 207 is fixed with the mold seat 202 by bolts, which is convenient for the installation and maintenance of the ejection assembly 300.

[0047] In summary, in the specific implementation process of the embodiment, first, the top surfaces of the outer ejection sleeve 301, the middle ejection sleeve 303 and the inner ejection rod 302 are flush with the inner bottom surface of the casting cavity during casting. After casting is completed and cooled for a period of time, the movable mold 100 is lifted out, at which time the formed workpiece is in a high-temperature and solidified state, and then the ejection assembly 300 is pushed upward by the driving assembly 400 to eject the formed workpiece.

[0048] During the ejection of the workpiece, first, the outer ejection sleeve 301 ejects the workpiece upward, while the top ends of the middle ejection sleeve 303 and the inner ejection rod 302 maintain a certain distance from the lower surface of the workpiece; as the inclined support portion 404 collides with the blocking block 206, the ejection pipe 403 pushes the inner ejection rod 302 to move upward relative to the lifting disc 401, so that the top surface of the inner ejection rod 302 is higher than the top surface of the outer ejection sleeve 301, and the formed workpiece is separated from the top surface of the outer ejection sleeve 301, thereby avoiding adhesion between the two to cause demolding difficulty.

[0049] Embodiment Two: Please refer to Figure 1 Figure 7 The embodiment also provides an anti-adhesion type aluminum liquid high-pressure die casting mold. The difference between the embodiment and the first embodiment is that the inner ejection rod 302 is internally provided with a gas storage cavity 304, the outer ring wall of the top of the inner ejection rod 302 is provided with a gas injection hole 305 in communication with the gas storage cavity 304, the top end of the abutting pipe 204 is provided with a gas injection pipe 208, and the gas injection pipe 208 is inserted into the inner side of the gas storage cavity 304. The outer surface of the fixed mold 200 is provided with a gas nozzle 209, and the fixed mold 200 and the mold base 202 are jointly provided with a gas flow channel for connecting the gas nozzle 209 and the abutting pipe 204. It should be noted that the diameter of the gas injection pipe 208 is smaller than the diameter of the abutting pipe 204, and the bottom end of the gas injection pipe 208 is inserted into the inner side of the top of the abutting pipe 204, and the two are in communication with each other. The gas flow channel in the fixed mold 200 and the mold base 202 is not shown in the drawings, and in other embodiments, a pipeline can also be used instead of the gas flow channel, as long as the gas nozzle 209 and the abutting pipe 204 can be communicated. The gas nozzle 209 is connected with an external gas source for injecting cold air.

[0050] In addition, a plurality of exhaust holes 306 are formed in the top side wall of the outer ejection sleeve 301, when the bottom ends of the inner ejection rod 302 and the middle ejection sleeve 303 abut against the lifting disc 401, the inner wall of the outer ejection sleeve 301 and the bottom wall of the formed workpiece jointly form a heat dissipation cavity, and the gas injection hole 305 and the exhaust hole 306 are in communication with the heat dissipation cavity. Therefore, the cold air injected from the gas injection hole 305 can directly enter the heat dissipation cavity, and then overflow from the exhaust hole 306.

[0051] ​It should be noted that the cold air entering the heat dissipation cavity helps to reduce the temperature of the local area of the bottom surface of the formed workpiece, so that when the top end of the inner ejector rod 302 abuts against the formed workpiece, the adhesion of the two can be prevented. In addition, since the heat dissipation cavity constitutes a relatively closed space, the air pressure in the heat dissipation cavity can be increased with the injection of cold air, and under the action of air pressure, an upward impact force will be generated on the formed workpiece, thereby further helping the formed workpiece and the outer ejector sleeve 301 to separate.

[0052] At the same time, since the cold air in the heat dissipation cavity is overflowed from the exhaust hole on the outer ejector sleeve 301, and the inner surface of the top of the outer ejector sleeve 301 is in a wave shape or a wrinkle shape, the top of the outer ejector sleeve 301 will also be in full contact with the cold air, thereby helping to cool the outer ejector sleeve 301. According to the principle of thermal expansion and contraction, cooling can make the outer ejector sleeve 301 shrink in size to a certain extent, thereby forming a gap with the surface of the workpiece, further helping to demold.

[0053] It should be noted that in this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or equipment including the element.

[0054] Although embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An anti-sticking high-pressure die casting mold for molten aluminum, comprising a movable mold and a fixed mold oppositely arranged in an up-down direction, a top surface of the fixed mold being provided with a casting cavity, and a top surface of the movable mold being provided with a high-pressure casting opening penetrating through the top surface in the up-down direction, characterized in that: the bottom surface of the movable mold and the inner surface of the casting cavity are coated with an anti-sticking coating, the bottom surface of the fixed mold is provided with an ejection cavity communicating with the casting cavity, and the bottom surface of the fixed mold is fixedly provided with a mold base, and the ejection cavity is provided with an ejection assembly capable of ascending and descending; the ejection assembly comprises an outer ejection sleeve and an inner ejection rod, the inner ejection rod is movably inserted into the inner side of the outer ejection sleeve, and in a casting state, the top surfaces of the outer ejection sleeve and the inner ejection rod are flush with the inner bottom surface of the casting cavity; the ejection cavity is further provided with a driving assembly for driving the ejection assembly to ascend and descend, the driving assembly is used for driving the outer ejection sleeve and the inner ejection rod to alternately ascend so as to alternately contact the outer positioning sleeve and the inner ejection rod with a formed workpiece; the ejection assembly further comprises a middle ejection sleeve, the middle ejection sleeve is located between the outer ejection sleeve and the inner ejection rod, the length of the middle ejection sleeve is shorter than the length of the inner ejection rod, and the length of the inner ejection rod is shorter than the length of the outer ejection sleeve; the top surface of the mold base is respectively provided with an abutting rod and an abutting pipe corresponding to the middle ejection sleeve and the inner ejection rod, when the bottom surfaces of the middle ejection sleeve and the inner ejection rod are respectively attached to the top ends of the abutting rod and the abutting pipe, the top surfaces of the middle ejection sleeve and the inner ejection rod are flush with the inner bottom surface of the casting cavity, the bottom ends of the middle ejection sleeve and the inner ejection rod are connected to the top surface of the mold base through return springs, and in a natural state, the return springs are in a stretched state; the driving assembly comprises a lifting disc and a linear driving structure for driving the lifting disc to move up and down, the lifting disc is connected to the bottom surface of the outer ejection sleeve, and the lifting disc is further provided with through holes through which the abutting rod and the abutting pipe pass; the through hole of the lifting disc through which the abutting pipe passes is movably provided with an ejection pipe, the abutting pipe is located inside the ejection pipe, the ejection pipe is in a T shape with a wide top and a narrow bottom, and the length of the ejection pipe is greater than the thickness of the lifting disc; the bottom of the ejection pipe is hingedly provided with a diagonal support part, a sliding block is hingedly arranged at the middle segment of the diagonal support part, the sliding block is in sliding fit with the bottom surface of the lifting disc, one end of the diagonal support part is exposed to the outside of the lifting disc, and the top of the ejection cavity is respectively provided with a blocking block corresponding to the two diagonal support parts, when the lifting disc moves upward to abut against the diagonal support part and the blocking block, the ejection pipe can move upward relative to the lifting disc. The inner part of the inner ejection rod is provided with a gas storage cavity, a gas injection hole communicating with the gas storage cavity is arranged on the outer ring wall of the top of the inner ejection rod, the top end of the abutting pipe is provided with a gas injection pipe, the gas injection pipe is inserted into the inner side of the gas storage cavity, the outer surface of the fixed mold is provided with a gas nozzle, and the fixed mold and the mold base are jointly provided with a gas flow channel for connecting the gas nozzle and the abutting pipe. The top side wall of the outer ejection sleeve is provided with a plurality of exhaust holes, when the bottom ends of the inner ejection rod and the middle ejection sleeve abut against the lifting disc, the inner wall of the outer ejection sleeve and the bottom wall of the formed workpiece jointly form a heat dissipation cavity, and the gas injection hole and the exhaust hole are both communicated with the heat dissipation cavity. The top inner surface of the outer ejection sleeve is in a wave shape or a wrinkle shape. ​ ​ ​ ​ ​ ​ ​ ​ 2. The anti-stick aluminum melt high pressure die casting mold according to claim 1, characterized in that: ​ 3. The anti-stick aluminum melt high pressure die casting mold according to claim 2, characterized in that: ​ 4. The anti-stick aluminum melt high pressure die casting mold according to claim 2, characterized in that: ​ 5. The anti-stick aluminum melt high pressure die casting mold according to claim 1, characterized in that: The bottom wall of the mold base is detachably fixed with a mounting portion, and the bottom ends of the abutting rod and the abutting pipe are connected with the mounting portion.

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