Anti-sticking molten aluminum high-pressure die-casting die

Abstract

The invention relates to the technical field of die-casting dies, in particular to an anti-sticking molten aluminum high-pressure die-casting die which comprises a movable die body and a fixed die body which are vertically and oppositely distributed, a casting cavity is formed in the top face of the fixed die body, a high-pressure casting opening is vertically formed in the top face of the movable die body in a penetrating mode, and the bottom face of the movable die body and the inner surface of the casting cavity are both coated with anti-sticking coatings. An ejection cavity communicated with the casting cavity is formed in the bottom face of the fixed mold, a mold base is fixedly arranged on the bottom face of the fixed mold, and an ejection assembly capable of ascending and descending vertically is arranged in the ejection cavity. The inner wall of the casting cavity is coated with the titanium nitride anti-sticking coating, and the anti-sticking coating can effectively prevent a formed workpiece from being stuck to the inner wall of the casting cavity, so that demolding is facilitated, and the service life of the mold is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of die-casting molds, and particularly to an anti-adhesion type high-pressure die-casting mold for aluminum liquid. Background Art

[0002] In modern manufacturing, the high-pressure die-casting process of aluminum liquid is widely used in many fields such as automobiles, aerospace, and electronics due to its advantages of being able to efficiently produce high-precision and complex-shaped aluminum alloy parts. As the core equipment of this process, the performance of the high-pressure die-casting mold for aluminum liquid directly affects the quality, production efficiency, and production cost of die-castings.

[0003] There are many problems in the design and manufacture of traditional high-pressure die-casting molds for aluminum liquid. For example, after the aluminum liquid is cast and formed, the ejection mechanism is usually used to eject the formed workpiece for demolding. However, if the ejection operation is performed after the formed workpiece is fully cooled, the waiting time will be relatively long, resulting in a reduction in the manufacturing efficiency of the workpiece; if the ejection operation is performed without waiting for the workpiece to be fully cooled, since the surface of the workpiece is still at a high temperature, the ejection mechanism is likely to stick to the surface of the workpiece, and thus the demolding process is not smooth, and it often requires manual assistance to remove the workpiece from the ejection mechanism, which is rather inconvenient.

[0004] At the same time, the early used die steel materials showed poor thermal fatigue performance and erosion resistance when facing the harsh working conditions such as high temperature, high pressure, and high-speed metal liquid flow erosion during the high-pressure die-casting process of aluminum liquid. After a certain number of die-casting cycles, the cavity surface of the mold is prone to failure phenomena such as thermal cracks and erosion wear, further leading to the workpiece being easily adhered to the inner wall of the cavity and causing difficult demolding. Therefore, we propose an anti-adhesion type high-pressure die-casting mold for aluminum liquid to well solve the above disadvantages. Summary of the Invention

[0005] The purpose of the present invention is to provide an anti-adhesion type high-pressure die-casting mold for aluminum liquid to solve the problems proposed in the above background art.

[0006] The present invention is achieved through the following technical solutions: An anti-adhesion type high-pressure die-casting mold for aluminum liquid includes a moving mold and a stationary mold that are distributed oppositely up and down. The top surface of the stationary mold is provided with a casting cavity, and the top surface of the moving mold is vertically penetrated with a high-pressure casting port. The bottom surface of the moving mold and the inner surface of the casting cavity are both coated with an anti-adhesion coating. The bottom surface of the stationary mold is provided with an ejection cavity communicating with the casting cavity. A mold base is fixedly provided on the bottom surface of the stationary mold, and an ejection assembly capable of lifting up and down is arranged in the ejection cavity; The ejection assembly includes 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. 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; The ejection cavity is further provided with a driving assembly for driving the lifting of the ejection assembly. The driving assembly is used to drive the outer ejection sleeve and the inner ejection rod to alternately rise, so that the outer positioning sleeve and the inner ejection rod alternately contact the formed workpiece.

[0007] Optionally, the ejection assembly further includes a middle ejection sleeve, which is located between the outer ejection sleeve and the inner ejection rod. The length of the middle ejection sleeve is shorter than that of the inner ejection rod, and the length of the inner ejection rod is shorter than that of the outer ejection sleeve.

[0008] Optionally, 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 respectively fit with 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 both connected to the top surface of the mold base through return springs. In the natural state, the return springs are in a stretched state.

[0009] Optionally, the driving assembly includes 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 through holes for the abutting rod and the abutting pipe to pass through are also formed in the lifting disc.

[0010] Optionally, an ejection pipe is movably arranged in the through hole of the lifting disc for the abutting pipe to pass through. The abutting pipe is located inside the ejection pipe. The ejection pipe is in a T shape with a wider top and a narrower bottom, and the length of the ejection pipe is greater than the thickness of the lifting disc.

[0011] Optionally, inclined support parts are hinged on both sides of the bottom of the ejection pipe. A slider is hinged at the middle position of the inclined support parts. The slider is slidably matched with the bottom surface of the lifting disc, and one end of the inclined support part extends out of the lifting disc. Blocking blocks corresponding to the two inclined support parts are respectively arranged on both sides of the top of the ejection cavity. When the lifting disc moves upward until the inclined support parts abut against the blocking blocks, the ejection pipe can move upward relative to the lifting disc.

[0012] Optionally, an air storage cavity is arranged inside the inner ejection rod. Air spraying holes communicating with the air storage cavity are formed on the outer circumferential wall at the top of the inner ejection rod. An air spraying pipe is arranged at the top end of the abutting pipe, and the air spraying pipe is inserted into the inner side of the air storage cavity. An air nozzle is arranged on the outer surface of the fixed mold, and an air flow channel for connecting the air nozzle and the abutting pipe is jointly arranged inside the fixed mold and the mold base.

[0013] Optionally, a plurality of exhaust holes are formed on the top side wall of the outer ejection sleeve. When the bottom ends of the inner ejection rod and the middle ejection sleeve both abut against the lifting disc, a heat dissipation cavity is formed jointly by the inner wall of the outer ejection sleeve and the bottom wall of the formed workpiece. The air spraying holes and the exhaust holes communicate with the heat dissipation cavity.

[0014] Optionally, the inner surface of the top of the outer ejector sleeve is wavy or corrugated.

[0015] Optionally, the bottom wall of the mold base is detachably and fixedly embedded with a mounting portion, and the bottom ends of the abutting rod and the abutting pipe are both connected to the mounting portion.

[0016] Compared with the prior art, the present invention provides an anti-sticking type high-pressure die casting mold for aluminum liquid, which has the following beneficial effects: 1. The inner wall of the casting cavity of the present invention is coated with a titanium nitride anti-sticking coating, and the anti-sticking coating can effectively prevent the formed workpiece from sticking to the inner wall of the casting cavity, thereby facilitating demolding and also contributing to improving the service life of the mold; 2. The ejecting assembly in the present invention has a secondary ejecting function, that is, when the inner ejecting rod moves upward, it can separate the bottom wall of the workpiece from the outer ejecting sleeve, thereby contributing to improving the smoothness of the demolding process, shortening the demolding waiting time, and improving the manufacturing efficiency of the workpiece; 3. The top of the inner ejecting rod in the present invention can blow out cold air, and the cold air can cool a local area of the bottom wall of the workpiece, thereby preventing the inner ejecting rod from sticking to the workpiece; 4. After the inner ejecting rod in the present invention sprays out cold air, the cold air can not only increase the air pressure in the heat dissipation cavity, but also assist in dissipating heat from the outer ejecting sleeve, so it further contributes to the separation of the workpiece and the outer ejecting sleeve. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a transverse sectional view of the structure of the present invention; Figure 3 is a longitudinal sectional view of the structure of the present invention; Figure 4 is a sectional view of the structure of the present invention in the ejecting state; Figure 5 is another sectional view of the ejecting state of the present invention; Figure 6 is a schematic diagram of the ejecting assembly and the driving assembly of the present invention; Figure 7 is a sectional view of the structure of the ejecting assembly of the present invention.

[0018] In the figure: 100, moving 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 part; 208, air injection pipe; 209, air nozzle; 300, ejection assembly; 301, outer ejection sleeve; 302, inner ejection rod; 303, middle ejection sleeve; 304, air storage cavity; 305, air injection hole; 306, exhaust hole; 400, driving assembly; 401, lifting plate; 402, linear driving structure; 403, ejection pipe; 404, inclined support part; 405, slider. Specific Embodiment

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0020] Embodiment 1: Please refer to Figure 1 - Figure 7 , an anti-adhesion type high-pressure die-casting mold for aluminum liquid, including a moving mold 100 and a fixed mold 200 which are distributed oppositely up and down. The top surface of the fixed mold 200 is provided with a casting cavity, and the top surface of the moving mold 100 is vertically penetrated with a high-pressure casting port 101. The bottom surface of the moving mold 100 and the inner surface of the casting cavity are both coated with an anti-adhesion coating. This anti-adhesion coating can adopt a titanium nitride coating, which has the effect of improving the surface finish of the casting cavity and can effectively prevent the formed workpiece from sticking to the inner cavity of the mold.

[0021] In the specific use of this embodiment, first, move the moving mold 100 downward and fit it with the fixed mold 200 to close the casting cavity, and then inject high-temperature aluminum liquid into the casting cavity through the high-pressure casting port 101; at the same time, turn on the water cooling system inside the fixed mold 200 to accelerate the solidification of the aluminum liquid. Finally, open the moving mold 100 and take out the formed workpiece to complete the die-casting process.

[0022] Furthermore, 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. An ejection assembly 300 capable of lifting up and down is arranged in the ejection cavity 201; a driving assembly 400 for pushing the ejection assembly 300 to lift is also arranged in the ejection cavity 201. Finally, the formed workpiece is ejected upward by the ejection assembly 300 to realize demolding.

[0023] The structures of the ejection assembly 300 and the driving assembly 400 are described in detail as follows: The ejection assembly 300 includes an outer ejection sleeve 301 and an inner ejection rod 302. The outer ejection sleeve 301 is cylindrical, and the inner ejection rod 302 is round rod-shaped. The inner ejection rod 302 is movably inserted inside the outer ejection sleeve 301. The ejection assembly 300 further includes a middle ejection sleeve 303, which 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 that of the inner ejection rod 302, and the length of the inner ejection rod 302 is shorter than that 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 all flush with the inner bottom surface of the casting cavity.

[0024] On the top surface of the mold base 202, there are respectively provided a contact rod 203 and a contact tube 204 corresponding to the middle ejection sleeve 303 and the inner ejection rod 302. Among them, there are two contact rods 203 and they are distributed relatively, and there is one contact tube 204. When the bottom surfaces of the middle ejection sleeve 303 and the inner ejection rod 302 are respectively in contact with the top ends of the contact rod 203 and the contact tube 204, the top surfaces of the middle ejection sleeve 303 and the inner ejection rod 302 are both flush with the inner bottom surface of the casting cavity.

[0025] At the same time, the bottom ends of the middle ejection sleeve 303 and the inner ejection rod 302 are both connected to the top surface of the mold base 202 through a return spring 205. In the natural state, the return spring 205 is in a stretched state. The return spring 205 is sleeved outside the corresponding contact rod 203 or contact tube 204. The bottom end of the return spring 205 is connected to the mold base 202, and its top end is respectively connected to 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 tendency.

[0026] It should be noted that the outer ejection sleeve 301, the middle ejection sleeve 303, and the inner ejection rod 302 are closely attached in sequence. And in this embodiment, the spring constant of the return spring 205 needs to be large enough so that the middle ejection sleeve 303 and the inner ejection rod 302 can overcome their respective frictions to move downward.

[0027] In addition, the driving assembly 400 is used to push the outer ejection sleeve 301 and the inner ejection rod 302 to rise alternately, so that the outer ejection sleeve 301 and the inner ejection rod 302 alternately contact the formed workpiece. Specifically, the driving assembly 400 includes 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, and the linear slide is fixedly installed on the inner wall of the ejection cavity 201, and its movable end is connected to the lifting disc 401. The lifting disc 401 is connected to the bottom surface of the outer ejection sleeve 301 by bolts, and through holes for the contact rod 203 and the contact tube 204 to pass through are also provided on the lifting disc 401.

[0028] In the casting state, the tops of the outer ejector sleeve 301, the middle ejector sleeve 303 and the inner ejector rod 302 are all flush with the bottom surface of the casting cavity. At this time, there is a certain distance between the bottoms of the middle ejector sleeve 303 and the inner ejector rod 302 and the lifting plate 401. As the lifting plate 401 rises, the inner ejector rod 302 and the middle ejector sleeve 303 can successively contact the lifting plate 401 and move synchronously under the push of the lifting plate 401.

[0029] Further, a ejector tube 403 is movably arranged in the through hole on the lifting plate 401 for the abutting tube 204 to pass through. The abutting tube 204 is located inside the ejector tube 403. The ejector tube 403 is in a T shape with a wider top and a narrower bottom, and the length of the ejector tube 403 is greater than the thickness of the lifting plate 401. The contour of the through hole for the ejector tube 403 to pass through coincides with the outer shape of the ejector tube 403. In the initial state, the top surface of the ejector tube 403 is flush with the top surface of the lifting plate 401.

[0030] In addition, two inclined support parts 404 are hinged on both sides of the bottom of the ejector tube 403. A slider 405 is hinged at the middle position of the inclined support part 404. The slider 405 is slidably matched with the bottom surface of the lifting plate 401, and one end of the inclined support part 404 extends out of the lifting plate 401. Two blocking blocks 206 corresponding to the two inclined support parts 404 are respectively arranged on both sides of the top of the ejection cavity 201. When the lifting plate 401 moves upward until the inclined support part 404 abuts against the blocking block 206, the ejector tube 403 can move upward relative to the lifting plate 401.

[0031] Specifically, the sliding direction of the slider 405 and the lifting plate 401 is the same as the projection direction of the inclined support part 404 on the bottom surface of the lifting plate 401, that is, as the ejector tube 403 moves, the slider 405 can also slide on the bottom surface of the lifting plate 401. In this embodiment, when the lifting plate 401 continues to rise, the inclined support part 404 will collide with the blocking block 206. Under the blocking action of the blocking block 206, the inclined support part 404 will rotate, so that the ejector tube 403 can move upward relative to the lifting plate 401, so that the top surface height of the inner ejector rod 302 exceeds the top surface height of the outer ejector sleeve 301.

[0032] In addition, an installation part 207 is detachably and fixedly embedded on the bottom wall of the mold base 202. The bottom ends of the abutting rod 203 and the abutting tube 204 are both connected to the installation part 207. The installation part 207 is fixedly connected to the mold base 202 by bolts, and the function is to facilitate the installation and maintenance of the ejector assembly 300.

[0033] In summary, in the specific implementation process of this embodiment, during casting, the top surfaces of the outer ejector sleeve 301, the middle ejector sleeve 303, and the inner ejector rod 302 are all flush with the inner bottom surface of the casting cavity. After casting is completed and it has cooled for a period of time, the moving die 100 rises and moves out. At this time, the formed workpiece is in a high-temperature and solidified state, and then the driving assembly 400 is used to push the ejector assembly 300 upward to eject the formed workpiece.

[0034] During the workpiece ejection process, first, the outer ejector sleeve 301 ejects the workpiece upward, while the top ends of the middle ejector sleeve 303 and the inner ejector rod 302 both maintain a certain distance from the lower surface of the workpiece; as the inclined strut portion 404 collides with the stopper block 206, the ejector tube 403 will push the inner ejector rod 302 to move upward relative to the lifting disk 401, and finally the top surface of the inner ejector rod 302 is higher than the top surface of the outer ejector sleeve 301, thereby separating the formed workpiece from the top surface of the outer ejector sleeve 301 and avoiding adhesion between the two, which may cause difficulty in demolding.

[0035] Embodiment 2: Please refer to Figure 1 - Figure 7 , this embodiment of the present application also proposes an anti-sticking high-pressure die casting mold for aluminum liquid. The difference between this embodiment and Embodiment 1 is that: an air storage cavity 304 is provided inside the inner ejector rod 302, an air injection hole 305 communicating with the air storage cavity 304 is opened on the outer ring wall at the top of the inner ejector rod 302, a gas injection pipe 208 is provided at the top end of the abutting pipe 204, and the gas injection pipe 208 is inserted into the inner side of the air storage cavity 304; an air nozzle 209 is provided on the outer surface of the fixed die 200, and an air flow channel for connecting the air nozzle 209 and the abutting pipe 204 is jointly provided inside the fixed die 200 and the mold base 202. 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 air flow channel in the fixed die 200 and the mold base 202 is not shown in the drawings. In other embodiments, a pipeline can also be used instead of the air flow channel, as long as the air nozzle 209 and the abutting pipe 204 can be made to communicate. The air nozzle 209 is connected to an external air source and is used to eject cold air.

[0036] In addition, a plurality of exhaust holes 306 are opened on the top side wall of the outer ejector sleeve 301. When the bottom ends of the inner ejector rod 302 and the middle ejector sleeve 303 are both in contact with the lifting disk 401, a heat dissipation cavity is formed jointly by the inner wall of the outer ejector sleeve 301 and the bottom wall of the formed workpiece, and the air injection hole 305 and the exhaust holes 306 are both in communication with the heat dissipation cavity. Therefore, the cold air ejected from the air injection hole 305 can directly enter the heat dissipation cavity and then overflow from the exhaust holes 306.

[0037] It should be noted that the entry of cold air into the heat dissipation cavity helps to reduce the temperature of the local area at the bottom surface of the formed workpiece, so that when the top end of the inner ejector rod 302 abuts against the formed workpiece, adhesion between the two can be prevented. Additionally, since the heat dissipation cavity forms a relatively closed space, with the injection of cold air, the air pressure inside the heat dissipation cavity can be increased. Under the action of the air pressure, an upward impact force will be generated on the formed workpiece, which further helps the formed workpiece to separate from the outer ejector sleeve 301.

[0038] Meanwhile, since the cold air in the heat dissipation cavity overflows from the exhaust holes on the outer ejector sleeve 301, and the inner surface of the top of the outer ejector sleeve 301 is wavy or corrugated, the top of the outer ejector sleeve 301 will also be in full contact with the cold air, which helps to cool down the outer ejector sleeve 301. According to the principle of thermal expansion and contraction, cooling can cause the outer ejector sleeve 301 to shrink in volume to a certain extent, thus forming a gap with the workpiece surface, which further helps with demolding.

[0039] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti - sticking type high - pressure die - casting mold for aluminum liquid, comprising a moving die and a fixed die which are distributed oppositely up and down. A casting cavity is opened on the top surface of the fixed die, and a high - pressure casting port is vertically penetrated through the top surface of the moving die. It is characterized in that: An anti - sticking coating is coated on the bottom surface of the moving die and the inner surface of the casting cavity. An ejection cavity communicated with the casting cavity is opened on the bottom surface of the fixed die. A mold base is fixedly arranged on the bottom surface of the fixed die, and an ejection assembly capable of lifting up and down is arranged in the ejection cavity; The ejection assembly includes 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. 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; A driving assembly for pushing the ejection assembly to lift and lower is further arranged in the ejection cavity. The driving assembly is used to push the outer ejection sleeve and the inner ejection rod to alternately rise, so that the outer positioning sleeve and the inner ejection rod alternately contact the formed workpiece.

2. The anti-adhesive aluminum liquid high-pressure die-casting mold according to claim 1, characterized in that: The ejection assembly further includes 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 that of the inner ejection rod, and the length of the inner ejection rod is shorter than that of the outer ejection sleeve.

3. The anti-sticking aluminum liquid high-pressure die-casting mold according to claim 2, wherein: Corresponding abutting rods and abutting tubes are respectively arranged on the top surface of the mold base for the middle ejection sleeve and the inner ejection rod. When the bottom surfaces of the middle ejection sleeve and the inner ejection rod respectively fit with the top ends of the abutting rod and the abutting tube, 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 both connected with the top surface of the mold base through return springs. In the natural state, the return springs are in a stretched state.

4. An anti-sticking aluminum liquid high-pressure die-casting mold according to claim 3, characterized in that: The driving assembly includes a lifting disc and a linear driving structure for pushing the lifting disc to move up and down. The lifting disc is connected to the bottom surface of the outer ejection sleeve, and through holes for the abutting rod and the abutting tube to pass through are further opened on the lifting disc.

5. The anti-sticking type high-pressure die-casting mold for aluminum liquid according to claim 4, characterized in that: An ejection tube is movably arranged in the through hole on the lifting disc for the abutting tube to pass through. The abutting tube is located inside the ejection tube. The ejection tube is in a T - shape with a wider top and a narrower bottom, and the length of the ejection tube is greater than the thickness of the lifting disc.

6. The anti-sticking aluminum liquid high-pressure die casting mold according to claim 5, characterized in that: Two inclined support parts are hinged on both sides of the bottom of the ejection tube. A slider is hinged at the middle position of the inclined support part. The slider is slidably matched with the bottom surface of the lifting disc, and one end of the inclined support part extends out of the lifting disc. Two blocking blocks corresponding to the two inclined support parts are respectively arranged on both sides of the top of the ejection cavity. When the lifting disc moves upward until the inclined support part abuts against the blocking block, the ejection tube can move upward relative to the lifting disc.

7. An anti-sticking aluminum liquid high-pressure die-casting mold according to claim 4, characterized in that: An air storage cavity is arranged inside the inner ejection rod. Air spraying holes communicated with the air storage cavity are opened on the outer ring wall at the top of the inner ejection rod. A gas spraying pipe is arranged at the top end of the abutting tube, and the gas spraying pipe is inserted into the inner side of the air storage cavity; An air nozzle is arranged on the outer surface of the fixed die, and an air flow channel for connecting the air nozzle and the abutting tube is jointly arranged inside the fixed die and the mold base.

8. An anti-sticking aluminum liquid high-pressure die-casting mold according to claim 7, characterized in that: A plurality of exhaust holes are opened on the top side wall of the outer ejection sleeve. When the bottom ends of the inner ejection rod and the middle ejection sleeve both abut against the lifting disc, a heat dissipation cavity is formed jointly by the inner wall of the outer ejection sleeve and the bottom wall of the formed workpiece. The air spraying holes and the exhaust holes are both communicated with the heat dissipation cavity.

9. The anti-sticking aluminum liquid high-pressure die-casting mold according to claim 7, characterized in that: The inner surface of the top of the outer ejection sleeve is in a wavy or corrugated shape.

10. A non-stick type high-pressure die casting mold for aluminum liquid according to claim 3, characterized in that: The bottom wall of the die holder is detachably and fixedly embedded with a mounting portion, and the bottom ends of the abutting rod and the abutting pipe are both connected to the mounting portion.

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