Lightweight aluminum shell die-casting mold

Abstract

The present application relates to the technical fields of aluminum housing die casting for automobile accessories, in particular to a light-weight aluminum housing die casting mold, comprising a movable mold body, a movable mechanism arranged on the movable mold body for moving the casting to generate a gap between the casting and the movable mold body, and a top piece mechanism arranged on the movable mold body for ejecting the casting, the driving assembly can drive the push plate to move along the sequence to the center of the movable mold body, so that a gap is generated between the casting and the movable mold body, the contact area between the casting and the movable mold body is reduced, thereby avoiding the movable mold body exerting a large pulling force on the casting, preventing the casting from deforming, the liquid feeding assembly can send the extrusion liquid into the inside of the movable mold body through the flow channel, so that the pressure can be uniformly transmitted to the casting through the extrusion liquid, avoiding the local concave of the casting, and ensuring the quality of the casting.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aluminum shell die casting for automobile accessories, in particular to a lightweight aluminum shell die casting mold. BACKGROUND

[0002] Die casting refers to a precise casting method that liquid metal is injected into the cavity of a die casting mold under high pressure at a fast speed, and the metal is rapidly cooled and solidified in the mold cavity to form a casting with the same shape as the cavity.

[0003] The die casting mold mainly consists of a fixed mold and a movable mold. The fixed mold is fixed on the fixed mold seat plate of the die casting machine, and the movable mold is installed on the movable mold seat plate of the die casting machine. During the die casting process, the movable mold moves towards the fixed mold through the mold closing mechanism of the die casting machine to form a closed cavity. Then, the die casting machine injects liquid metal from the gate on the fixed mold to fill the inside of the cavity. After the metal cools down, the die casting machine drives the movable mold to reset and pushes the formed casting out through the ejector pin on the movable mold. Finally, the casting is taken off from the fixed mold by manual or mechanical hand.

[0004] However, when casting some complex-shaped aluminum shell for automobile accessories, the contact area between the casting and the movable mold is large, so that the pulling force of the movable mold directly acting on the casting is large when the movable mold separates from the casting, which easily deforms the casting. In addition, since the contact area between the ejector pin and the shell is small, the shell is subjected to a large pressure, which easily causes local indentation of the shell, thereby reducing the die casting quality. SUMMARY

[0005] To solve the above technical problems, the technical scheme adopted by the present application is as follows: a lightweight aluminum shell die casting mold, comprising a movable mold body, a moving mechanism for moving the casting to generate a gap between the movable mold body and the casting is arranged on the movable mold body, and an ejecting mechanism for ejecting the casting is also arranged on the movable mold body.

[0006] The moving mechanism comprises grooves arranged at equal intervals on the inner side wall of the movable mold body, the grooves face the center of the movable mold body, a push plate is slidably arranged in the grooves along the depth direction, the side surface of the push plate is tightly fitted with the side wall of the groove, a tension spring is arranged between the push plate and the movable mold body to pull the push plate away from the center of the movable mold body, and a driving assembly is arranged on the movable mold body to drive the push plate to move one by one.

[0007] The ejecting mechanism comprises a flow channel arranged on the movable mold body, an inlet of the flow channel is arranged on the right side arm of the movable mold body, a plurality of outlets of the flow channel arranged in a rectangular shape are arranged on the inner back side wall of the movable mold body, an opening and closing assembly is arranged in each outlet, and a liquid sending assembly is arranged on the movable mold body to push and extrude liquid into the flow channel.

[0008] As a preferred technical scheme of the present application, the driving assembly comprises cylinder sleeves fixedly installed on the upper side of the movable mold body at equal intervals along the left-right direction, the cylinder sleeves are communicated with the corresponding grooves through the air passages arranged inside the movable mold body, the piston rods are slidably arranged inside the cylinder sleeves, the movable mold body is provided with a pushing part for pushing the piston rods one by one, and the piston rods are provided with pressure relief parts for limiting the upper limit of the air pressure inside the air passages.

[0009] As a preferred technical scheme of the present application, the cylinder sleeves correspond to the grooves one by one, and the air passages are not communicated with each other, when the piston rods are moved one by one from right to left and downward, the grooves increase the air pressure inside them one by one along the surrounding sequence.

[0010] As a preferred technical scheme of the present application, the pushing part comprises a follower rod fixedly installed at the rear side of the piston rod, a moving plate is slidably arranged on the upper side of the movable mold body, a pushing block in the shape of a parallelogram is fixedly installed at the front side of the moving plate, and a slant groove is arranged in the middle of the pushing block and gradually inclined upward from right to left.

[0011] As a preferred technical scheme of the present application, the upper side of the slant groove is located at the upper side of the follower rod, the lower side of the slant groove is located at the lower side of the follower rod, a hydraulic push rod is fixedly installed at the right part of the upper side of the movable mold body, and the extension section of the hydraulic push rod is fixedly connected with the moving plate.

[0012] As a preferred technical scheme of the present application, the pressure relief part comprises a moving rod slidably arranged at the coaxial position inside the piston rod along the vertical direction, the outer side of the moving rod is tightly combined with the inner side of the piston rod, hemispherical grooves are symmetrically arranged on the inner side of the piston rod, limit columns corresponding to the hemispherical grooves are slidably arranged on the moving rod along the radial direction of the moving rod, a jacking spring is arranged between the limit columns and the moving rod, and the length of the piston rod is equal to that of the moving rod.

[0013] As a preferred technical scheme of the present application, the opening and closing assembly comprises a fixed pipe fixedly installed inside the outlet, a guide column is slidably arranged inside the fixed pipe along the axial direction of the fixed pipe, a cover is fixedly installed at the front side of the guide column, the outer diameter of the cover is equal to the inner diameter of the fixed pipe, and a spiral spring is arranged between the guide column and the fixed pipe.

[0014] As a preferred technical scheme of the present application, the liquid sending assembly comprises a flow guide pipe fixedly installed at the right side of the movable mold body and communicated with the inlet, the flow guide pipe is connected with a conveying pump, a liquid pushing part is slidably arranged inside the inlet, an L-shaped rod is connected at the right side of the liquid pushing part and inserted into the outside of the flow guide pipe, a rotating disc for moving the L-shaped rod is rotatably arranged at the right side of the movable mold body through an ear seat, and a blast-proof motor connected with the rotating disc is fixedly installed at the front side of the ear seat.

[0015] As a preferred embodiment of the present invention, the rotating disk is provided with an annular wave groove, the longitudinal section of the L-shaped rod extends into and slides inside the annular wave groove, and the annular wave groove is located at an eccentric position on the rotating disk.

[0016] As a preferred embodiment of the present invention, the liquid pushing part includes a liquid guiding tube that is slidably disposed inside the inlet. An inserting post is slidably disposed inside the liquid guiding tube along its axial direction. A cover plate is fixedly installed on the left side of the inserting post. The outer diameter of the cover plate is equal to the inner diameter of the liquid guiding tube. A return spring is disposed between the inserting post and the liquid guiding tube. The right side of the liquid guiding tube is fixedly connected to the transverse section of the L-shaped rod.

[0017] The beneficial effects of the present invention are as follows: First, the present invention uses a driving component that can drive the pusher plate to move sequentially towards the center of the moving mold body, so that the pusher plate pushes the casting inside the moving mold body to move, thereby creating a gap between the casting and the moving mold body, reducing the contact area between the casting and the moving mold body, and thus avoiding the moving mold body from applying a large tensile force to the casting and preventing the casting from deforming.

[0018] Second, the present invention uses a liquid delivery component that can deliver the extrusion liquid into the interior of the moving mold body through the flow channel, and allow the extrusion liquid to flow through the opening and closing component to the gap between the casting and the moving mold body. Then, by applying pressure to the extrusion liquid, the pressure can be evenly transmitted to the casting through the extrusion liquid, thereby increasing the force application area on the casting, avoiding the occurrence of local depressions in the casting, and ensuring the quality of the casting.

[0019] Third, the present invention employs multiple outlets arranged in a matrix, which allows the extrusion fluid to flow out quickly and fill the gap between the casting and the moving mold body, thereby ensuring the ejection speed of the casting and thus ensuring the efficiency of die casting. Furthermore, the annular wave groove eccentrically arranged on the rotating disk can apply a continuously alternating force to the extrusion fluid while pushing it, thereby increasing the pressure of the extrusion fluid on the casting and impacting the casting, thus making it easier for the casting to separate from the moving mold body.

[0020] Fourth, this invention uses a method in which the piston rod and the moving rod move downwards synchronously to compress the air inside the air passage, so that the air inside the air passage applies pressure to the push plate, thereby causing the push plate to push the casting. When the air pressure inside the air passage reaches a specified value, the air pressure pushes the moving rod to drive the limiting post out of the hemispherical groove, so that the moving rod moves upward relative to the piston rod, thereby restoring the air pressure inside the air passage to the initial state, thus avoiding excessive air pressure from pushing and deforming the casting. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 This is a cross-sectional view of the moving mold body, groove, push plate, cylinder liner, air passage, piston rod, follower rod and moving rod in this invention.

[0024] Figure 3 This is a first cross-sectional view of the moving mold body, air passage, groove and flow channel in this invention.

[0025] Figure 4 This is a second sectional view of the moving mold body, air passage, groove and flow channel in this invention.

[0026] Figure 5 This is a cross-sectional view of the moving mold body and the flow channel in this invention.

[0027] Figure 6 This is a cross-sectional view of the piston rod, follower rod, push block, moving rod, and limiting post in this invention.

[0028] Figure 7 This is a partial cross-sectional view of the moving mold body and the opening / closing assembly in this invention.

[0029] Figure 8 This is a partial cross-sectional view of the moving mold body and the liquid delivery assembly in this invention.

[0030] Figure 9 This is a partial cross-sectional view of the L-shaped rod and the liquid-pushing part in this invention.

[0031] In the diagram: 1. Moving mold body; 2. Movable mechanism; 3. Ejector mechanism; 21. Groove; 22. Push plate; 23. Drive assembly; 31. Flow channel; 32. Opening and closing assembly; 33. Liquid delivery assembly; 231. Cylinder liner; 232. Air passage; 233. Piston rod; 234. Pushing part; 235. Pressure relief part; 311. Inlet; 312. Outlet; 321. Fixed pipe fitting; 322. Guide column; 323. Cap; 33 1. Guide tube; 332. Liquid pushing part; 333. L-shaped rod; 334. Ear seat; 335. Rotating disk; 336. Explosion-proof motor; 337. Annular wave groove; 2341. Follower rod; 2342. Moving plate; 2343. Push block; 2344. Inclined groove; 2345. Hydraulic push rod; 2351. Moving rod; 2353. Limiting post; 3321. Liquid guiding pipe fitting; 3322. Insertion post; 3323. Cover plate. Detailed Implementation

[0032] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Where specific techniques or conditions are not specified in the embodiments, they shall be performed in accordance with the techniques or conditions described in the literature in the art or in accordance with the product manual.

[0033] See Figure 1 A lightweight aluminum shell die-casting mold includes a moving mold body 1, an active mechanism 2 for moving the casting to create a gap between the casting and the moving mold body 1, and an ejector mechanism 3 for ejecting the casting.

[0034] When resetting the moving mold body 1, the moving mechanism 2 gradually pushes the casting inside the moving mold body 1 around, creating a gap between the moving mold body 1 and the casting. Then, the die-casting machine drives the moving mold body 1 to move backward, moving the moving mold body 1 away from the fixed mold. During this process, the ejector mechanism 3 evenly introduces the extrusion fluid into the gap between the moving mold body 1 and the casting. At the same time, the extrusion fluid applies pressure to the casting, causing the moving mold body 1 to separate from the casting.

[0035] See Figure 1 and Figure 2 The moving mechanism 2 includes grooves 21 that are equally spaced around the inner sidewall of the moving mold body 1. The grooves 21 face the center of the moving mold body 1. A push plate 22 is slidably disposed inside the groove 21 along its depth direction. The side of the push plate 22 is tightly fitted with the sidewall of the groove 21. A tension spring is provided between the push plate 22 and the moving mold body 1 to pull it away from the center of the moving mold body 1. A drive assembly 23 is provided on the moving mold body 1 to drive the push plates 22 to move one by one.

[0036] See Figure 1 , Figure 2 , Figure 3 and Figure 4 The drive assembly 23 includes cylinder sleeves 231 that are fixedly installed on the upper side of the moving mold body 1 at equal intervals in the left-right direction. The cylinder sleeves 231 are connected to the corresponding grooves 21 through air passages 232 opened inside the moving mold body 1. A piston rod 233 is slidably arranged inside the cylinder sleeve 231. A pushing part 234 is provided on the moving mold body 1 to push the piston rods 233 one by one. The cylinder sleeves 231 and the grooves 21 correspond one-to-one. Each air passage 232 is not connected to each other. When the piston rods 233 are moved downward one by one from right to left, the air pressure inside the grooves 21 increases one by one in the surrounding sequence.

[0037] See Figure 1 , Figure 2 and Figure 6 The pushing part 234 includes a follower rod 2341 fixedly installed on the rear side of the piston rod 233. A moving plate 2342 is slidably arranged on the upper side of the moving mold body 1. A pushing block 2343 with a parallelogram structure is fixedly installed on the front side of the moving plate 2342. A sloping groove 2344 that gradually slopes upward from right to left is opened in the middle of the pushing block 2343.

[0038] See Figure 2 andFigure 6 The upper inclined surface of the inclined groove 2344 is located on the upper side of the follower rod 2341, and the lower inclined surface of the inclined groove 2344 is located on the lower side of the follower rod 2341. A hydraulic push rod 2345 is fixedly installed on the upper right side of the moving mold body 1, and the telescopic section of the hydraulic push rod 2345 is fixedly connected to the moving plate 2342.

[0039] When it is necessary to separate the moving mold body 1 from the casting, the telescopic section of the hydraulic push rod 2345 extends, so that the telescopic section of the hydraulic push rod 2345 drives the push block 2343 to move from right to left through the moving plate 2342, so that the push block 2343 presses the follower rod 2341 downward from right to left one by one through the upper inclined surface of the inclined groove 2344 on it, and the follower rod 2341 drives the piston rod 233 to move vertically downward.

[0040] See Figure 6 The drive assembly 23 also includes a pressure relief part 235 disposed on the piston rod 233. The pressure relief part 235 includes a movable rod 2351 that is slidably disposed in the vertical direction and coaxially disposed inside the piston rod 233. The outer side of the movable rod 2351 is in close contact with the inner side of the piston rod 233. Symmetrical hemispherical grooves are provided on the inner side of the piston rod 233. Limiting posts 2353 corresponding to the hemispherical grooves are slidably disposed on the movable rod 2351 along its radial direction. A push spring is disposed between the limiting post 2353 and the movable rod 2351. The piston rod 233 and the movable rod 2351 are of equal length.

[0041] In the initial state, the bottom of the piston rod 233 is flush with the bottom of the moving rod 2351, and the moving rod 2351 drives the limiting post 2353 on it to insert into the hemispherical groove of the piston rod 233, so that the piston rod 233 and the moving rod 2351 are locked into a whole. When the piston rod 233 moves downward, the piston rod 233 drives the moving rod 2351 inside it to move downward synchronously, so that the piston rod 233 and the moving rod 2351 move downward along the cylinder liner 231 at the corresponding position, and compress the air inside the air passage 232 at the corresponding position.

[0042] The air transmits the compressive force of the piston rod 233 and the moving rod 2351 through the air passage 232 to the inside of the groove 21. The compressed air inside the groove 21 begins to compress the push plate 22 at the corresponding position, causing the push plate 22 to move towards the center of the moving mold body 1. This push plate 22 pushes the casting. As the piston rods 233 are pressed one by one from right to left, the push plates 22 are pushed one by one along the surrounding sequence. The push plates 22 push the casting in sequence in various directions, thereby creating a gap between the casting and the moving mold body 1.

[0043] When the air pressure inside the air passage 232 reaches a limit value, the air pressure pushes the moving rod 2351 to move upward relative to the piston rod 233 connected to it. This causes the moving rod 2351 to drive the limiting post 2353 out of the hemispherical groove of the piston rod 233. The inner wall of the piston rod 233 pushes the limiting post 2353 to retract inside the moving rod 2351, thereby restoring the air pressure inside the air passage 232 to its initial state. Under the action of the tension spring, the push plate 22 moves completely into the groove 21, thus preventing the push plate 22 from applying a large pushing force to the casting and causing the casting to deform.

[0044] Subsequently, the telescopic section of the hydraulic push rod 2345 is retracted, causing the push block 2343 to move from left to right. This causes the inclined groove 2344 to push the piston rod 233 upwards one by one through its lower inclined surface, thereby moving the piston rod 233 to the position of the moving rod 2351. The limiting post 2353 extends back into the interior of the corresponding hemispherical groove by the elastic force of the push spring, locking the piston rod 233 and the moving rod 2351 into a whole again.

[0045] See Figure 1 , Figure 2 and Figure 5 The top component mechanism 3 includes a flow channel 31 formed on the moving mold body 1. An inlet 311 of the flow channel 31 is provided on the right arm of the moving mold body 1. Multiple rectangular outlets 312 of the flow channel 31 are provided on the inner rear side wall of the moving mold body 1. Each outlet 312 is provided with an opening and closing component 32. The moving mold body 1 is provided with a liquid delivery component 33 for pushing extrusion liquid into the flow channel 31.

[0046] See Figure 1 , Figure 2 and Figure 8 The liquid delivery assembly 33 includes a guide pipe 331 fixedly installed on the right side of the moving mold body 1 and connected to the inlet 311. The guide pipe 331 is connected to the delivery pump. A liquid pushing part 332 is slidably arranged inside the inlet 311. An L-shaped rod 333 is connected to the right side of the liquid pushing part 332 and inserted to the outside of the guide pipe 331. A rotating disk 335 that drives the L-shaped rod 333 to move is rotatably arranged on the right side of the moving mold body 1 through an ear seat 334. An explosion-proof motor 336 connected to the rotating disk 335 is fixedly installed on the front side of the ear seat 334.

[0047] See Figure 8 The rotating disk 335 has an annular wave groove 337. The longitudinal section of the L-shaped rod 333 extends into and slides inside the annular wave groove 337. The annular wave groove 337 is located at an eccentric position on the rotating disk 335.

[0048] See Figure 8 and Figure 9The liquid pushing part 332 includes a liquid guiding tube 3321 that is slidably disposed inside the inlet 311. An insert post 3322 is slidably disposed inside the liquid guiding tube 3321 along its axial direction. A cover plate 3323 is fixedly installed on the left side of the insert post 3322. The outer diameter of the cover plate 3323 is equal to the inner diameter of the liquid guiding tube 3321. A return spring is disposed between the insert post 3322 and the liquid guiding tube 3321. The right side of the liquid guiding tube 3321 is fixedly connected to the transverse section of the L-shaped rod 333.

[0049] In the initial state, both the interior of the flow channel 31 and the interior of the guide pipe 331 are filled with extrusion fluid. The L-shaped rod 333 drives the guide pipe 3321 to be located on the right side inside the inlet 311. When the die-casting machine drives the moving mold body 1 to move backward, the explosion-proof motor 336 is started to drive the rotating disk 335 to rotate one revolution. The rotating disk 335 drives the annular wave groove 337 to rotate, so that the annular wave groove 337 pushes the longitudinal section of the L-shaped rod 333 from a position far away from the center of the rotating disk 335 to a position close to the center of the rotating disk 335, thereby causing the L-shaped rod 333 to move from right to left.

[0050] L-shaped rod 333 drives liquid guide tube 3321 to move to the left in sync. Liquid guide tube 3321 drives cover plate 3323 to move in sync, so that liquid guide tube 3321 and cover plate 3323 cooperate to push the extruded liquid inside flow channel 31 toward outlet 312.

[0051] See Figure 1 and Figure 7 The opening and closing assembly 32 includes a fixed pipe 321 fixedly installed inside the outlet 312. A guide post 322 is slidably arranged inside the fixed pipe 321 along its axial direction. A cover 323 is fixedly installed on the front side of the guide post 322. The outer diameter of the cover 323 is equal to the inner diameter of the fixed pipe 321. A helical spring is arranged between the guide post 322 and the fixed pipe 321.

[0052] When the liquid guide tube 3321 drives the cover plate 3323 to push the extrusion liquid to the left, the extrusion liquid pushes the cover 323 forward relative to the fixed tube 321. Since the die casting machine drives the fixed tube 321 to move backward through the moving mold body 1, the cover 323 extends to the front side of the liquid guide tube 3321 without moving in place. Thus, the cover 323 no longer blocks the front side of the liquid guide tube 3321. The extrusion liquid flows through the front side of the liquid guide tube 3321 and fills the gap between the casting and the moving mold body 1. Then, the liquid guide tube 3321 and the cover plate 3323 push the casting forward through the extrusion liquid, causing the casting to separate from the moving mold body 1.

[0053] Because the extrusion fluid can transmit force evenly, the pushing force of the extrusion fluid on the casting is equal everywhere, thus preventing the casting from being deformed. Furthermore, because the annular wave groove 337 can move the L-shaped rod 333 alternately from left to right while pushing it to the left, the fluid guide pipe 3321 and the cover plate 3323 apply a force of continuously alternating magnitude to the extrusion fluid. This causes the pressure of the extrusion fluid on the casting to increase continuously, while also impacting the casting. This makes it easier for the casting to separate from the moving mold body 1. Then, the rotating disk 335 drives the L-shaped rod 333 to move to the right to the initial position.

[0054] When the die-casting machine drives the moving mold body 1 and the fixed mold to close again, the die-casting machine injects liquid metal under high pressure into the cavity formed by the moving mold body 1 and the fixed mold. This causes the liquid metal to push the cover 323 backward and press it tightly against the front side of the fixed pipe 321, thereby sealing the front side of the fixed pipe 321. Then, the extrusion liquid is pumped through the guide pipe 331 to fill the interior of the flow channel 31 again. The extrusion liquid pushes the cover plate 3323 to move to the left side of the guide pipe 3321, so that the extrusion liquid can flow through the guide pipe 3321 into the interior of the flow channel 31.

[0055] See Figures 1-9 The present invention further includes the following steps when ejecting the casting: First, the extension section of the hydraulic push rod 2345 is extended to drive the piston rod 233 to move vertically downward from right to left one by one, so that the piston rod 233 and the moving rod 2351 compress the air inside the air passage 232 at the corresponding position, and the air drives the push plate 22 to push the casting in various directions in sequence, thereby creating a gap between the casting and the moving mold body 1.

[0056] In the second step, when the air pressure inside the air passage 232 reaches the limit value, the air pressure pushes the moving rod 2351 to move upward relative to the piston rod 233 connected to it, so that the air pressure inside the air passage 232 returns to the initial state. Under the action of the tension spring, the push plate 22 moves completely into the interior of the groove 21, thereby preventing the push plate 22 from applying a large pushing force to the casting, which would cause the casting to deform.

[0057] The third step involves retracting the telescopic section of the hydraulic push rod 2345, causing the push block 2343 to move from left to right. This causes the inclined groove 2344 to push the piston rods 233 upward one by one through its lower inclined surface, thereby moving the piston rods 233 to the position of the moving rod 2351. The piston rods 233 and the moving rod 2351 are then locked together as a whole.

[0058] In the fourth step, the die-casting machine drives the moving mold body 1 to move backward, and starts the explosion-proof motor 336 to drive the rotating disk 335 to rotate one revolution. The rotating disk 335 drives the liquid guiding pipe 3321 and the cover plate 3323 to push the extrusion liquid to the left through the annular wave groove 337, so that the extrusion liquid pushes the cover 323 forward relative to the fixed pipe 321. Then the extrusion liquid flows through the front side of the liquid guiding pipe 3321 and fills the gap between the casting and the moving mold body 1. After that, the liquid guiding pipe 3321 and the cover plate 3323 push the casting forward through the extrusion liquid, so that the casting separates from the moving mold body 1.

[0059] In the fifth step, the die-casting machine drives the moving mold body 1 and the fixed mold to close again. The die-casting machine injects liquid metal under high pressure into the cavity formed by the moving mold body 1 and the fixed mold, so that the liquid metal pushes the cover 323 backward and tightly abuts against the front side of the fixed pipe 321, thereby sealing the front side of the fixed pipe 321. Then, the extrusion liquid is pumped through the guide pipe 331 to fill the interior of the flow channel 31 again. The extrusion liquid pushes the cover plate 3323 to move to the left side of the guide pipe 3321, so that the extrusion liquid can flow through the guide pipe 3321 into the interior of the flow channel 31.

[0060] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention, which are still covered within the protection scope of the present invention.

Claims

1. A lightweight aluminum shell die-casting mold, comprising a moving mold body (1), characterized in that, The moving mold body (1) is provided with a moving mechanism (2) for moving the casting to create a gap between it and the moving mold body (1), and the moving mold body (1) is also provided with an ejector mechanism (3) for ejecting the casting. The active mechanism (2) includes grooves (21) that are equally spaced around the inner sidewall of the moving mold body (1). The grooves (21) face the center of the moving mold body (1). A push plate (22) is slidably arranged inside the groove (21) along its depth direction. The side of the push plate (22) is tightly fitted with the sidewall of the groove (21). A tension spring is provided between the push plate (22) and the moving mold body (1) to pull it away from the center of the moving mold body (1). A drive assembly (23) is provided on the moving mold body (1) to drive the push plates (22) to move one by one. The top component mechanism (3) includes a flow channel (31) opened on the moving mold body (1). An inlet (311) of the flow channel (31) is provided on the right arm of the moving mold body (1). Multiple rectangular outlets (312) of the flow channel (31) are provided on the inner rear side wall of the moving mold body (1). Each outlet (312) is provided with an opening and closing component (32). The moving mold body (1) is provided with a liquid delivery component (33) for pushing the extrusion liquid into the flow channel (31).

2. The lightweight aluminum shell die-casting mold according to claim 1, characterized in that, The drive assembly (23) includes cylinder liners (231) that are fixedly installed on the upper side of the moving mold body (1) at equal intervals in the left and right directions. The cylinder liners (231) are connected to the corresponding grooves (21) through air passages (232) opened inside the moving mold body (1). Piston rods (233) are slidably arranged inside the cylinder liners (231). The moving mold body (1) is provided with a pushing part (234) that pushes the piston rods (233) one by one. The piston rods (233) are provided with a pressure relief part (235) that limits the upper limit of the air pressure inside the air passages (232).

3. The lightweight aluminum shell die-casting mold according to claim 2, characterized in that, The cylinder liner (231) corresponds one-to-one with the groove (21), and the various air passages (232) are not interconnected. When the piston rod (233) is moved downward from right to left, the internal air pressure of the groove (21) increases one by one along the surrounding sequence.

4. A lightweight aluminum shell die-casting mold according to claim 2, characterized in that, The pushing part (234) includes a follower rod (2341) fixedly installed on the rear side of the piston rod (233), and a moving plate (2342) is slidably arranged on the upper side of the moving mold body (1). A pushing block (2343) with a parallelogram structure is fixedly installed on the front side of the moving plate (2342), and a sloping groove (2344) that gradually slopes upward from right to left is opened in the middle.

5. A lightweight aluminum shell die-casting mold according to claim 4, characterized in that, The upper inclined surface of the inclined groove (2344) is located above the follower rod (2341), and the lower inclined surface of the inclined groove (2344) is located below the follower rod (2341). A hydraulic push rod (2345) is fixedly installed on the upper right side of the moving mold body (1), and the telescopic section of the hydraulic push rod (2345) is fixedly connected to the moving plate (2342).

6. A lightweight aluminum shell die-casting mold according to claim 2, characterized in that, The pressure relief part (235) includes a movable rod (2351) that is slidably disposed on the same axis inside the piston rod (233) in the vertical direction. The outer side of the movable rod (2351) is in close contact with the inner side of the piston rod (233). The inner side of the piston rod (233) is symmetrically provided with hemispherical grooves. The movable rod (2351) is slidably disposed with limiting posts (2353) that correspond one-to-one with the hemispherical grooves along its radial direction. A pushing spring is provided between the limiting post (2353) and the movable rod (2351). The piston rod (233) and the movable rod (2351) are of equal length.

7. A lightweight aluminum shell die-casting mold according to claim 1, characterized in that, The opening and closing assembly (32) includes a fixed pipe (321) fixedly installed inside the outlet (312). A guide post (322) is slidably arranged inside the fixed pipe (321) along its axial direction. A cover (323) is fixedly installed on the front side of the guide post (322). The outer diameter of the cover (323) is equal to the inner diameter of the fixed pipe (321). A helical spring is arranged between the guide post (322) and the fixed pipe (321).

8. A lightweight aluminum shell die-casting mold according to claim 1, characterized in that, The liquid delivery assembly (33) includes a guide pipe (331) fixedly installed on the right side of the moving mold body (1) and connected to the inlet (311). The guide pipe (331) is connected to the delivery pump. A liquid pushing part (332) is slidably arranged inside the inlet (311). An L-shaped rod (333) that passes through the outside of the guide pipe (331) is connected to the right side of the liquid pushing part (332). A rotating disk (335) that drives the L-shaped rod (333) to move is rotatably arranged on the right side of the moving mold body (1) through an ear seat (334). An explosion-proof motor (336) that is connected to the rotating disk (335) is fixedly installed on the front side of the ear seat (334).

9. A lightweight aluminum shell die-casting mold according to claim 8, characterized in that, The rotating disk (335) has an annular wave groove (337), and the longitudinal section of the L-shaped rod (333) extends into and slides inside the annular wave groove (337). The annular wave groove (337) is located at an eccentric position on the rotating disk (335).

10. A lightweight aluminum shell die-casting mold according to claim 9, characterized in that, The liquid pushing part (332) includes a liquid guiding tube (3321) that is slidably disposed inside the inlet (311). An insert post (3322) is slidably disposed inside the liquid guiding tube (3321) along its axial direction. A cover plate (3323) is fixedly installed on the left side of the insert post (3322). The outer diameter of the cover plate (3323) is equal to the inner diameter of the liquid guiding tube (3321). A return spring is disposed between the insert post (3322) and the liquid guiding tube (3321). The right side of the liquid guiding tube (3321) is fixedly connected to the transverse section of the L-shaped rod (333).

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