A die-casting equipment for thin-walled automobile parts

Abstract

The present invention belongs to the field of die-casting technology, and specifically is a die-casting device for thin-walled automobile parts, comprising a lower die base, a guide column is installed on the lower die base, an upper die base is installed on the guide column, the upper die base and the lower die base are installed on a die-casting machine, a cavity is opened on the lower die base, and a pouring port is installed on the upper die base; a lifting plate is slidably installed in the cavity, the shape of the lifting plate is the same as the bottom surface shape of the cavity, and a telescopic column is installed between the lower surface of the lifting plate and the bottom surface of the cavity; the space above the lifting plate is divided into the cavity, and the space below the lifting plate is divided into a cooling cavity, a hose is installed on the lower die base, and the hose is connected to the cooling cavity; the present invention has a simple structure, and can quickly cool and mold thin-walled parts by arranging a cooling cavity under the sliding lifting plate, and use the lifting plate to push the thin-walled parts out, so as to facilitate demolding and improve demolding efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of die casting, in particular to a die casting device for thin-walled automobile parts. Background Art

[0002] Die casting is a precision casting method that uses high pressure to force molten metal into a complex-shaped metal mold. Die castings made by die casting have higher mechanical strength than those obtained by ordinary casting. In the manufacture of automotive parts, die casting is very suitable for batch production of a large number of small and medium-sized parts and local thin-walled parts.

[0003] When die-casting thin-walled parts, the molten metal is first cast and filled into the cavity of the mold at a low speed or a high speed. The mold has a movable cavity surface, which is pressurized and forged as the molten metal cools. At the same time, in the prior art, the molten metal cools slowly, and after cooling, when the thin-walled parts stick to the lower mold, it is inconvenient to take them out, which affects the demolding efficiency. Summary of the invention

[0004] In order to make up for the shortcomings of the prior art, a cooling chamber is set under the sliding lifting plate to quickly cool and mold the thin-walled parts, and the lifting plate is used to push the thin-walled parts out to facilitate demolding and improve demolding efficiency. The present invention proposes a die-casting device for thin-walled automobile parts.

[0005] The technical solution adopted by the present invention to solve the technical problem is as follows: the die-casting equipment for thin-walled automobile parts of the present invention comprises a lower die base, a guide column is installed on the lower die base, an upper die base is installed on the guide column, the upper die base and the lower die base are installed on a die-casting machine, a cavity is opened on the lower die base, and a pouring port is installed on the upper die base;

[0006] A lifting plate is slidably installed in the cavity, the shape of the lifting plate is the same as the bottom surface of the cavity, and a telescopic column is installed between the lower surface of the lifting plate and the bottom surface of the cavity;

[0007] The space above the lifting plate is divided into a mold cavity, and the space below the lifting plate is divided into a cooling cavity. A hose is installed on the lower mold base, and the hose is connected to the cooling cavity.

[0008] Preferably, a reinforcing plate is installed on the lower surface of the lifting plate, and the reinforcing plates are provided in multiple groups. The reinforcing plates are distributed parallel to each other, and the lower ends of the reinforcing plates are in contact with the bottom surface of the cooling cavity.

[0009] Preferably, a through hole is opened on the jacking plate, a jacking block is installed in the through hole, a baffle is installed at the lower end of the jacking block, the upper end of the jacking block is flush with the upper surface of the jacking plate, and there is a gap between the baffle and the lower surface of the jacking plate.

[0010] Preferably, a deformation rod is installed on the baffle, the other end of the deformation rod is installed on the lower surface of the lifting plate, the deformation rod is made of shape memory metal, and the top block is pushed upward by the deformation rod with reduced temperature;

[0011] A collar is installed on the baffle plate, the other end of the collar is connected to the lower surface of the lifting plate, and the deformation rod is located in the space surrounded by the collar.

[0012] Preferably, the collar is made of high temperature resistant cloth.

[0013] Preferably, the hoses are provided in a plurality of groups, and each of the hoses corresponds to a space between different reinforcing plates.

[0014] Preferably, a step groove is provided at the edge of the lower surface of the lifting plate, a mounting platform is provided on the inner wall of the cavity, and the lifting plate is supported by the mounting platform;

[0015] A guiding inclined surface is arranged at one end of the step groove facing the lower die seat, and the step groove matches the surface of the mounting platform.

[0016] Preferably, the coolant in the cooling cavity is emptied during die casting.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The die-casting equipment for thin-walled automobile parts described in the present invention is provided with a mold cavity, a lifting plate and a cooling cavity. After die-casting, coolant is introduced into the cooling cavity. The large area of ​​the lifting plate increases the cooling speed of the thin-walled parts, promotes the molding of the thin-walled parts, and improves the cooling effect. At the same time, after cooling is completed, the positive pressure in the cooling cavity is used to push the lifting plate to slide and push the thin-walled parts outward, which is convenient for demolding and improves the demolding efficiency.

[0019] 2. The die-casting equipment for thin-walled automobile parts described in the present invention strengthens the middle position of the lifting plate by arranging a lifting plate, a reinforcing plate, a lifting block, a deforming rod and a collar to avoid deformation of the middle position of the lifting plate and affect the molding effect of the thin-walled parts. At the same time, when pushing the thin-walled parts to be demolded, the positive pressure of the coolant and the deformation of the deforming rod are used to drive the lifting block to be pushed outward, thereby promoting the separation between the thin-walled parts and the lifting plate, and avoiding the thin-walled parts from adhering to the lifting plate, making it inconvenient to take the thin-walled parts and affecting the demolding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a three-dimensional diagram of the die-casting apparatus of the present invention;

[0022] Figure 2 is a cross-sectional view of a lower die base in the die-casting equipment of the present invention;

[0023] Figure 3 It is a schematic structural diagram of a jacking plate in a die-casting device of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the top block in the die-casting equipment of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the lower die base in the die-casting equipment of the present invention;

[0026] Figure 6 yes Figure 2 A partial enlarged view of the middle part;

[0027] Figure 7 yes Figure 3 A partial enlarged view of point B in the middle;

[0028] In the figure: upper mold base 1, pouring gate 11, lower mold base 2, guide column 21, cavity 22, cooling cavity 23, hose 24, mounting platform 25, lifting plate 3, reinforcing plate 31, top block 32, baffle 321, deformation rod 322, collar 323, step groove 33, guide slope 331, telescopic column 34. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0030] like Figures 1 to 7 As shown, the die-casting equipment for thin-walled automobile parts of the present invention comprises a lower die base 2, a guide column 21 is installed on the lower die base 2, an upper die base 1 is installed on the guide column 21, the upper die base 1 and the lower die base 2 are installed on the die-casting machine, a cavity 22 is opened on the lower die base 2, and a pouring port 11 is installed on the upper die base 1;

[0031] A lifting plate 3 is slidably installed in the cavity 22. The shape of the lifting plate 3 is the same as the bottom surface of the cavity 22. A telescopic column 34 is installed between the lower surface of the lifting plate 3 and the bottom surface of the cavity 22.

[0032] The space above the lifting plate 3 is divided into a mold cavity 22, and the space below the lifting plate 3 is divided into a cooling cavity 23. A hose 24 is installed on the lower mold base 2, and the hose 24 is connected to the cooling cavity 23;

[0033] During operation, the upper die base 1 and the lower die base 2 are molded together, and then the molten metal is injected from the pouring port 11 into the cavity 22 in the lower die base 2 to hydraulically cast the metal into a thin-walled part. Then, the coolant is introduced into the cooling cavity 23 through the hose 24 to cool the thin-walled part. After the cooling is completed, the upper die base 1 and the lower die base 2 are opened, and the lifting plate 3 moves upward under the pressure in the cooling cavity 23 to push the thin-walled part out of the cavity 22 and demold the thin-walled part.

[0034] At the same time, since there is a cooling cavity 23 below the lifting plate 3, when cooling the thin-walled part, the heat dissipation of the thin-walled part can be accelerated through the relatively large area of ​​the lifting plate 3, and the molding of the thin-walled part can be promoted, thereby improving the cooling effect and efficiency of the thin-walled part;

[0035] At the same time, the controller controls the water pump to form a large positive pressure in the cooling chamber 23, so that after the thin-walled part is cooled and the upper die seat 1 and the lower die seat 2 are opened, the lifting plate 3 moves upward under the positive pressure to push the thin-walled part outward, which facilitates the demoulding of the thin-walled part from the mold and improves the demoulding efficiency. At the same time, since the area of ​​the lifting plate 3 is relatively large, when the thin-walled part is pushed outward, the lifting plate 3 has a large contact area with the thin-walled part and the thin-walled part is evenly stressed, thereby avoiding the thin-walled part from being not completely finalized and the rod-shaped part used for ejection causing scratches and indentations on the surface of the thin-walled part, which affects the quality of the thin-walled part.

[0036] At the same time, after the thin-walled part is demoulded, the controller controls the external water pump to pump out the coolant in the cooling chamber 23, so that the cooling chamber 23 becomes a negative pressure, thereby returning the lifting plate 3 to its original position, waiting for the next die-casting operation.

[0037] As an embodiment of the present invention, a reinforcing plate 31 is installed on the lower surface of the jacking plate 3, and the reinforcing plates 31 are provided in multiple groups. The reinforcing plates 31 are distributed parallel to each other, and the lower end of the reinforcing plate 31 contacts the bottom surface of the cooling cavity 23;

[0038] Since the area of ​​the jacking plate 3 is relatively large and the middle position of the jacking plate 3 is in a suspended state relative to the cooling chamber 23, the middle position of the jacking plate 3 will be relatively weak and easily deformed by the die-casting pressure during the die-casting process, thereby affecting the die-casting quality of the thin-walled parts. Therefore, a reinforcing plate 31 is installed on the lower surface of the jacking plate 3 so that the reinforcing plate 31 can be located between the jacking plate 3 and the bottom surface of the cooling chamber 23 during die-casting, so as to support and support the middle position of the jacking plate 3, thereby ensuring that the middle position of the jacking plate 3 can be stable and not deformed during the die-casting process, thereby ensuring good die-casting quality of thin-walled parts;

[0039] At the same time, by installing a reinforcing plate 31 on the lower surface of the lifting plate 3, the contact area between the lifting plate 3 and the coolant in the cooling chamber 23 will be increased, thereby accelerating the heat exchange when cooling the thin-walled parts, promoting the cooling and forming of the thin-walled parts, and ensuring the good die-casting quality of the thin-walled parts.

[0040] As an embodiment of the present invention, a through hole is provided on the jacking plate 3, a top block 32 is installed in the through hole, a baffle 321 is installed at the lower end of the top block 32, the upper end of the top block 32 is flush with the upper surface of the jacking plate 3, and there is a gap between the baffle 321 and the lower surface of the jacking plate 3;

[0041] Since the area of ​​the lifting plate 3 is relatively large, and the surfaces of the thin-walled part in contact with the lifting plate 3 cannot be completely on the same plane, during the die-casting demolding process, even if the lifting plate 3 pushes the thin-walled part out of the cavity 22, the thin-walled part may still adhere to the upper surface of the lifting plate 3, thereby affecting the demolding efficiency of the thin-walled part and making it inconvenient to demold the thin-walled part. Therefore, a top block 32 is installed on the lifting plate 3. During the demolding process of the thin-walled part, as the lifting plate 3 pushes the thin-walled part out of the cavity 22, the top block 32 is located in a part of the cooling chamber 23. The end will also be affected by the positive pressure of the coolant, so that the ejector block 32 is ejected toward the thin-walled part, so that the ejector block 32 can be used to further separate the thin-walled part from the ejector plate 3, to avoid mutual adhesion between the bottom surface of the thin-walled part and the ejector plate 3, which makes it inconvenient to demould the thin-walled part and affects the demoulding efficiency. At the same time, after the demoulding is completed, as the ejector plate 3 is affected by the negative pressure in the cooling chamber 23 and returns to its original position, the ejector block 32 will also return to its original position, and in this process, the water or demoulding agent sprayed into the cavity 22 will impact the ejector plate 3 and the ejector block 32, further promoting them to return to their original positions.

[0042] As an embodiment of the present invention, a deformation rod 322 is installed on the baffle 321, and the other end of the deformation rod 322 is installed on the lower surface of the lifting plate 3. The deformation rod 322 is made of shape memory metal, and the top block 32 is pushed upward by the deformation rod 322 with reduced temperature;

[0043] A collar 323 is installed on the baffle 321, and the other end of the collar 323 is connected to the lower surface of the lifting plate 3, and the deformation rod 322 is located in the space surrounded by the collar 323;

[0044] After the coolant is introduced into the cooling chamber 23, the temperature of the deformation rod 322 will drop rapidly, so that the deformation rod 322 will be deformed and drive the top block 32 to be ejected outward, thereby promoting the separation of the thin-walled part and the lifting plate 3 to avoid adhesion. At the same time, since the deformation rod 322 will begin to deform after it contacts the coolant and the temperature begins to drop, when the coolant has just been introduced into the cooling chamber 23 and the thin-walled part has not been fully cooled, the deformation rod 322 will begin to deform synchronously, driving the top block 32 to be ejected outward. Therefore, a collar 323 is installed on the baffle plate 321 to isolate the deformation rod 322, so that when the coolant enters the cooling chamber 23, the coolant cannot contact the deformation rod 322 at the first time, thereby delaying the deformation time of the deformation rod 322, so that after the thin-walled part is cooled, the top block 32 can be used to separate the thin-walled part from the lifting plate 3 to ensure the die-casting quality of the thin-walled part.

[0045] As an embodiment of the present invention, the collar 323 is made of high temperature resistant cloth;

[0046] The relatively thin collar 323 is made of high-temperature resistant cloth, which facilitates the movement of the collar 323 when the top block 32 moves. At the same time, due to the gaps on the surface of the high-temperature resistant cloth, the coolant can pass through the high-temperature resistant cloth, thereby cooling the deformed rod 322. At the same time, during continuous die-casting, the space surrounded by the high-temperature resistant cloth will be relatively isolated inside and outside, delaying the exchange of coolant and heat in the inner and outer spaces, thereby delaying the deformation speed of the deformed rod 322 and ensuring the die-casting quality of thin-walled parts.

[0047] As an embodiment of the present invention, the hoses 24 are provided in multiple groups, and each of the hoses 24 corresponds to a space between different reinforcing plates 31;

[0048] By setting up multiple groups of hoses 24, multiple streams of coolant can flow in the space between different reinforcing plates 31 without interfering with or mixing with each other, thereby increasing the temperature difference between the coolant and the lifting plate 3 and the reinforcing plate 31, accelerating the heat exchange rate, and facilitating the cooling of thin-walled parts. At the same time, when the thin-walled parts are relatively large or the thin-walled parts are partially thin-walled, the temperature of the coolant introduced into different hoses 24 changes, so that the temperature of each part of the thin-walled parts is relatively uniformly cooled, thereby ensuring the cooling effect of the thin-walled parts and improving the die-casting quality of the thin-walled parts.

[0049] As an embodiment of the present invention, a step groove 33 is provided at the edge of the lower surface of the lifting plate 3, and a mounting platform 25 is provided on the inner wall of the cavity 22, and the lifting plate 3 is supported by the mounting platform 25;

[0050] The step groove 33 is provided with a guide slope 331 at one end facing the lower die seat 2, and the step groove 33 matches the surface of the mounting platform 25;

[0051] The step groove 33 between the lifting plate 3 and the mounting platform 25 is matched with each other to improve the sealing effect between the lifting plate 3 and the inner wall of the cavity 22, thereby preventing the metal liquid from leaking from the gap between the lifting plate 3 and the inner wall of the cavity 22 during die casting, causing the metal liquid to enter the cooling cavity 23, and affecting the die casting quality of thin-walled parts and the normal use of the die casting equipment;

[0052] At the same time, by setting a guiding bevel 331 at the downward end of the step groove 33, when the lifting plate 3 returns to its original position, the guiding bevel 331 will contact the corresponding bevel on the mounting platform 25, thereby guiding the lifting plate 3 to approach the mounting platform 25 and fit to the mounting platform 25, ensuring that the lifting plate 3 can be accurately and stably fitted to the mounting platform 25 and the sealing between the two is ensured, thereby avoiding sliding, shaking or impacting of the lifting plate 3 in the process of returning to its original position, resulting in damage to the edges of the lifting plate 3 and the mounting platform 25, affecting the sealing between the two, and causing leakage of molten metal during die-casting, affecting the normal use of the die-casting equipment and the quality of thin-walled parts.

[0053] As an embodiment of the present invention, the cooling liquid inside the cooling cavity 23 is emptied during die casting;

[0054] During die-casting, the coolant in the cooling chamber 23 will be emptied in advance to prevent the temperature of the molten metal from dissipating quickly when the molten metal is injected into the cavity 22, causing it to cool too quickly, affecting the molding of thin-walled parts or causing defects, and affecting the quality of thin-walled parts. At the same time, since the coolant in the cooling chamber 23 is emptied and the thickness of the lifting plate 3 is relatively thin, the lifting plate 3 can absorb relatively less heat or facilitate the increase of the temperature of the lifting plate 3 during the die-casting process, thereby completing the preheating of the mold and avoiding affecting the plasticity of the injected molten metal and the quality of the thin-walled parts.

[0055] The specific workflow is as follows:

[0056] During operation, the upper die base 1 and the lower die base 2 are molded together, and then the molten metal is injected from the pouring port 11 into the cavity 22 in the lower die base 2 to hydraulically cast the metal into a thin-walled part. Then, the coolant is introduced into the cooling cavity 23 through the hose 24 to cool the thin-walled part. After the cooling is completed, the upper die base 1 and the lower die base 2 are opened, so that the lifting plate 3 moves upward under the pressure in the cooling cavity 23, and the thin-walled part is pushed out of the cavity 22 for demoulding;

[0057] At the same time, since the cooling chamber 23 is located below the lifting plate 3, when the thin-walled part is cooled through the relatively large area of ​​the lifting plate 3;

[0058] At the same time, the controller controls the water pump to form a large positive pressure in the cooling chamber 23, so that after the thin-walled workpiece is cooled and the upper die seat 1 and the lower die seat 2 are opened, the lifting plate 3 moves upward under the positive pressure to push the thin-walled workpiece outward. At the same time, the lifting plate 3 has a large contact area with the thin-walled workpiece, and the thin-walled workpiece is evenly stressed.

[0059] At the same time, after the thin-walled part is demoulded, the controller controls the external water pump to pump out the coolant in the cooling chamber 23, so that the cooling chamber 23 becomes negative pressure, and the lifting plate 3 returns to its original position;

[0060] A reinforcing plate 31 is installed on the lower surface of the lifting plate 3, so that the reinforcing plate 31 can be located between the lifting plate 3 and the bottom surface of the cooling chamber 23 during die casting, so as to support the middle position of the lifting plate 3;

[0061] At the same time, by installing the reinforcing plate 31 on the lower surface of the lifting plate 3, the contact area between the lifting plate 3 and the coolant in the cooling chamber 23 is increased, which speeds up the heat exchange when cooling the thin-walled parts and promotes the cooling and forming of the thin-walled parts.

[0062] The ejector block 32 is installed on the ejector plate 3. During the demoulding process of the thin-walled part, as the ejector plate 3 pushes the thin-walled part out of the cavity 22, one end of the ejector block 32 located in the cooling cavity 23 is also subjected to the positive pressure of the coolant, so that the ejector block 32 is ejected toward the thin-walled part. The ejector block 32 is further used to separate the thin-walled part from the ejector plate 3. At the same time, after the demoulding is completed, as the ejector plate 3 is affected by the negative pressure in the cooling cavity 23 and returns to its original position, the ejector block 32 also returns to its original position.

[0063] After the coolant is introduced into the cooling chamber 23, the temperature of the deforming rod 322 will drop rapidly, so that the deforming rod 322 is deformed and drives the ejector block 32 to be ejected outward. At the same time, a collar 323 is installed on the baffle 321, and the deforming rod 322 is isolated by the collar 323, so that when the coolant is introduced into the cooling chamber 23, the coolant cannot contact the deforming rod 322 immediately, and the time for the deformation of the deforming rod 322 is delayed, so that after the thin-walled part is completely cooled, the ejector block 32 is used to separate the thin-walled part from the lifting plate 3;

[0064] The relatively thin collar 323 is made of high temperature resistant cloth, so that the collar 323 can move when the top block 32 moves. At the same time, due to the gaps on the surface of the high temperature resistant cloth, the coolant can pass through the high temperature resistant cloth, thereby cooling the deformed rod 322. At the same time, when the die casting is continuously performed, the inside and outside of the space surrounded by the high temperature resistant cloth will be relatively isolated, delaying the exchange of coolant and heat between the inside and outside spaces;

[0065] By setting multiple groups of hoses 24, multiple streams of coolant can flow in the space between different reinforcing plates 31 without interfering with or mixing with each other, thereby increasing the temperature difference between the coolant and the lifting plate 3 and the reinforcing plate 31, accelerating the heat exchange speed. At the same time, when the thin-walled part is relatively large or the thin-walled part is partially thin-walled, the temperature of the coolant introduced into different hoses 24 changes, so that the temperature of each part of the thin-walled part is relatively uniformly reduced.

[0066] The sealing effect between the lifting plate 3 and the inner wall of the cavity 22 is improved by matching the step groove 33 between the lifting plate 3 and the mounting platform 25;

[0067] At the same time, by providing a guide slope 331 at the downward end of the step groove 33, when the lifting plate 3 returns to the original position, the guide slope 331 will contact the corresponding slope on the mounting platform 25, thereby guiding the lifting plate 3 to approach the mounting platform 25 and fit to the mounting platform 25;

[0068] During die casting, the coolant in the cooling chamber 23 will be emptied in advance to prevent the temperature of the molten metal from dissipating quickly when the molten metal is injected into the cavity 22, causing it to cool too quickly, affecting the molding of thin-walled parts or causing defects.

[0069] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A die-casting device for thin-walled automobile parts, comprising a lower die base (2), a guide column (21) being mounted on the lower die base (2), an upper die base (1) being mounted on the guide column (21), the upper die base (1) and the lower die base (2) being mounted on a die-casting machine, a cavity (22) being formed on the lower die base (2), and a pouring port (11) being mounted on the upper die base (1); Features: A lifting plate (3) is slidably installed in the mold cavity (22), the shape of the lifting plate (3) is the same as the bottom surface shape of the mold cavity (22), and a telescopic column (34) is installed between the lower surface of the lifting plate (3) and the bottom surface of the mold cavity (22); The space above the lifting plate (3) is divided into a mold cavity (22), and the space below the lifting plate (3) is divided into a cooling cavity (23). A hose (24) is installed on the lower mold base (2), and the hose (24) is connected to the cooling cavity (23); A reinforcing plate (31) is installed on the lower surface of the lifting plate (3), and a plurality of reinforcing plates (31) are provided. The reinforcing plates (31) are arranged parallel to each other, and the lower ends of the reinforcing plates (31) are in contact with the bottom surface of the cooling cavity (23); The jacking plate (3) is provided with a through hole, a jacking block (32) is installed in the through hole, a baffle (321) is installed at the lower end of the jacking block (32), the upper end of the jacking block (32) is flush with the upper surface of the jacking plate (3), and there is a gap between the baffle (321) and the lower surface of the jacking plate (3); A deformation rod (322) is mounted on the baffle plate (321), the other end of the deformation rod (322) is mounted on the lower surface of the lifting plate (3), the deformation rod (322) is made of shape memory metal, and the top block (32) is pushed upward by the deformation rod (322) whose temperature is reduced; A collar (323) is installed on the baffle (321), the other end of the collar (323) is connected to the lower surface of the lifting plate (3), and the deformation rod (322) is located in the space surrounded by the collar (323); The collar (323) is made of high temperature resistant cloth.

2. According to claim 1, a die-casting equipment for thin-walled automobile parts, characterized in that: The hoses (24) are provided in a plurality of groups, and each of the hoses (24) corresponds to a space between different reinforcing plates (31).

3. According to claim 1, a die-casting equipment for thin-walled automobile parts, characterized in that: A step groove (33) is provided at the edge of the lower surface of the lifting plate (3), a mounting platform (25) is provided on the inner wall of the cavity (22), and the lifting plate (3) is supported by the mounting platform (25); A guiding inclined surface (331) is provided at one end of the step groove (33) facing the lower die seat (2), and the step groove (33) matches the surface of the mounting platform (25).

4. The die-casting equipment for thin-walled automobile parts according to claim 1, characterized in that: The cooling liquid inside the cooling cavity (23) is emptied during die casting.

Images