New energy automobile battery shell die-casting mold

Abstract

The application relates to the technical field of die-casting moulds, in particular to a new energy automobile battery shell die-casting mould. The die-casting mould comprises a base, a guide rail frame is installed on the base, a fixed mould is arranged on the guide rail frame, a movable mould is slidably arranged on the guide rail frame, a hydraulic cylinder is further installed on the guide rail frame, the telescopic rod of the hydraulic cylinder is connected with the movable mould, a first air cylinder is installed in the fixed mould, and a cutting knife for cutting off the flash of a die-cast part is slidably arranged in the fixed mould. The cutting knife driven by the first air cylinder is integrated in the fixed mould, the opening and closing of the shielding plate are controlled by cooperating with a folding mechanism, the cutting knife can automatically extend after the mould is opened, the flash formed on the edge of the die-cast part can be accurately cut off, the whole deburring process does not need manual intervention, the die-casting production rhythm is seamlessly connected, the production efficiency is remarkably improved, the technical bottleneck that the traditional manual deburring is low in efficiency, high in labor intensity and difficult to match the high-speed die-casting rhythm is solved, and the automation and continuity of the die-casting post-processing are realized.

Description

Technical Field

[0001] This invention relates to the field of die-casting mold technology, and in particular to a die-casting mold for a new energy vehicle battery casing. Background Technology

[0002] With the global energy structure transformation and increasingly stringent environmental protection requirements, the new energy vehicle industry is developing rapidly. As one of its core components, the performance, safety, and manufacturing cost of the power battery system have attracted much attention. The battery casing, especially the battery housing, as the load-bearing and protective structure of the battery module, not only needs to have excellent mechanical strength, rigidity, and sealing performance, but also needs to meet the requirements of lightweight, corrosion resistance, and good thermal management performance. High pressure die casting has become the mainstream technology for the large-scale manufacturing of aluminum alloy battery casings due to its advantages such as high production efficiency, good dimensional accuracy, and high material utilization.

[0003] In high-pressure die casting, molten aluminum alloy is injected into a sealed mold cavity under high pressure and high speed. To ensure that the molten aluminum alloy can fully fill the complex thin-walled structure and avoid defects such as porosity and cold shuts caused by gas retention, the mold design usually sets tiny venting grooves or reserves extremely small fitting gaps at the parting surface to achieve orderly air discharge within the cavity. However, this necessary venting measure also brings significant technical challenges under high-pressure filling conditions: because the molten metal is easily driven by huge pressure to overflow through these venting grooves or gaps, it causes defects such as gas retention at the edges of the casting. Irregular metal flakes or protrusions, commonly known in the industry as "flash" (also called "burrs"), are formed when die-cast parts are exposed to burrs. Currently, the treatment of burrs on die-cast parts generally relies on subsequent secondary processing steps, which are done manually using hand tools or special punching dies. However, manual deburring is inefficient and difficult to match the cycle time of high-pressure die-casting machines, becoming a bottleneck restricting overall production efficiency. Furthermore, the force, angle, and range of manual operation are difficult to control precisely, resulting in large fluctuations in deburring quality and the risk of incomplete cleaning or over-cutting that damages the die, affecting the product's appearance and dimensional consistency. Summary of the Invention

[0004] In view of this, the present invention provides a die-casting mold for a new energy vehicle battery casing, which can solve the problem that the existing technology requires manual removal of flash from die-cast parts using hand tools or special punching dies. This is not only inefficient and cumbersome, but also prone to incomplete cleaning or excessive cutting that damages the die.

[0005] The technical solution is as follows: A die-casting mold for a new energy vehicle battery casing includes a base, a guide rail frame mounted on the base, a fixed mold mounted on the guide rail frame, a movable mold slidably mounted on the guide rail frame, a hydraulic cylinder mounted on the guide rail frame, the telescopic rod of the hydraulic cylinder connected to the movable mold, a first cylinder mounted inside the fixed mold, a cutting blade slidably mounted inside the fixed mold for removing flash from the die-cast part, the cutting blade connected to the telescopic rod of the first cylinder, and a retracting mechanism inside the fixed mold, the retracting mechanism being equipped with a tool for... A baffle plate is provided to shield the cutting blade. A retractable mechanism is used to retract the baffle plate. A cutting groove adapted to the cutting blade is provided on the movable mold. A filling mechanism for filling the cutting groove is provided inside the movable mold. Hollow cylinders are provided in both the fixed mold and the movable mold. Air outlets are provided on the hollow cylinders to guide gas to blow onto the die-casting part. An inflation mechanism and a sealing mechanism are provided in both the fixed mold and the movable mold. The inflation mechanism is used to inflate the hollow cylinders, and the sealing mechanism is used to seal the air outlets of the hollow cylinders.

[0006] Preferably, the retraction mechanism includes a bidirectional electric push rod, a U-shaped plate, a connecting plate, and a unidirectional electric push rod. The bidirectional electric push rod is installed inside the fixed mold. The telescopic rods on both sides of the bidirectional electric push rod are connected to the U-shaped plate. The connecting plate is symmetrically and rotatably connected to the U-shaped plate. The connecting plate is rotatably connected to the baffle plate. The unidirectional electric push rod is symmetrically and rotatably installed on the U-shaped plate. The telescopic rod of the unidirectional electric push rod is rotatably connected to the baffle plate.

[0007] Preferably, the filling mechanism includes a square bar, a first rack, a gear, a second rack, and a first spring. The square bar is slidably disposed in the cutting groove of the movable mold, and the first rack is connected to the square bar. The gear is rotatably disposed in the movable mold, and the first rack meshes with the gear. The second rack is slidably disposed in the movable mold, and the second rack meshes with the gear. The first spring connects the second rack to the movable mold.

[0008] Preferably, the inflation mechanism includes an air pipe and a valve, with the air pipe connected to the hollow cylinder and the valve installed on the air pipe.

[0009] Preferably, the sealing mechanism includes a second cylinder, a connecting plate, and a sealing column. The second cylinder is installed on the side of the hollow cylinder, and the connecting plate is connected to the telescopic rod of the second cylinder. The sealing column is slidably arranged inside the hollow cylinder and is used to seal the air outlet of the hollow cylinder. The sealing column is connected to the connecting plate.

[0010] Preferably, it also includes a discharge frame, which is installed on the base and is used to collect the flash cut off from the die casting.

[0011] Preferably, the bottom of the discharge frame is set as a slope, which is used to guide the flash to discharge.

[0012] Preferably, the device also includes a vibrating plate, a second spring, and a vibrating motor. The vibrating plate is rotatably installed inside the discharge frame, and a second spring is connected between the bottom of the vibrating plate and the bottom of the discharge frame. The vibrating motor is installed at the bottom of the vibrating plate.

[0013] The beneficial effects of this invention are: 1. This invention integrates a cutting blade driven by a first cylinder within a fixed mold, and coordinates with a retracting mechanism to control the opening and closing of the baffle plate. The cutting blade can automatically extend after the mold is opened to precisely remove the burrs formed on the edge of the die-casting part. The entire deburring process requires no manual intervention and is seamlessly connected with the die-casting production rhythm, significantly improving production efficiency. It solves the technical bottlenecks of traditional manual deburring, such as low efficiency, high labor intensity, and difficulty in matching the high-speed die-casting rhythm, and realizes the automation and continuity of die-casting post-processing.

[0014] 2. This invention precisely controls the stroke and force of the cutting blade through the first cylinder, ensuring that the depth and range of burrs removed each time are highly consistent. This avoids the problems of incomplete cleaning or excessive cutting that can damage the casting body due to inconsistent force and angle during manual operation. It effectively guarantees the appearance quality, dimensional accuracy and structural integrity of the battery case product, and improves product consistency and yield.

[0015] 3. The present invention is provided with hollow cylinders with air outlets in both the fixed mold and the movable mold, and is equipped with an air inflation mechanism and a sealing mechanism controlled by a second cylinder. After the mold is opened, the sealing mechanism can be precisely controlled to open the air outlet and introduce compressed air, which is blown synchronously from both sides of the cavity to assist the casting to be demolded smoothly. This effectively avoids the deformation or damage of the casting caused by sticking to the mold or uneven ejection, and improves the stability and safety of demolding. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the fixed mold of the present invention.

[0018] Figure 3 This is a three-dimensional structural diagram of the unfolding mechanism and the inflation mechanism of the present invention.

[0019] Figure 4 This is a structural separation diagram of the unfolding mechanism, the inflation mechanism, and the sealing mechanism of the present invention.

[0020] Figure 5 This is a three-dimensional structural diagram of the active mold of the present invention.

[0021] Figure 6 This is a three-dimensional structural diagram of the filling mechanism and the inflation mechanism of the present invention.

[0022] Figure 7This is a three-dimensional structural diagram of the filling mechanism and the sealing mechanism of the present invention.

[0023] Figure 8 This is a three-dimensional structural diagram of the base, discharge frame, and vibrating plate of the present invention.

[0024] Figure 9 This is a three-dimensional structural diagram of the discharge frame, vibrating plate, and vibrating motor of the present invention.

[0025] Explanation of reference numerals in the attached drawings: 1. Base, 2. Guide rail frame, 3. Fixed mold, 4. Movable mold, 5. Hydraulic cylinder, 6. First cylinder, 7. Cutting blade, 801. Bidirectional electric push rod, 802. U-shaped plate, 803. Connecting plate, 804. Unidirectional electric push rod, 9. Baffle plate, 10. Cutting groove, 1101. Square strip, 1102. First rack, 1103. Gear, 1104. Second rack, 1105. First spring, 12. Hollow cylinder, 1401. Air pipe, 1402. Valve, 1501. Second cylinder, 1502. Connecting plate, 1503. Sealing column, 16. Discharge frame, 17. Vibrating plate, 18. Second spring, 19. Vibrating motor. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] Example: A die-casting mold for a new energy vehicle battery casing, see below. Figures 1-7As shown, it includes a base 1, a guide rail frame 2, a fixed mold 3, a movable mold 4, and a hydraulic cylinder 5; the guide rail frame 2 is mounted on the top of the base 1; the fixed mold 3 is mounted on the guide rail frame 2, and the fixed mold 3 is equipped with an injection system for injecting molten aluminum alloy (existing technology will not be described in detail); the movable mold 4 is slidably mounted on the guide rail frame 2, and the movable mold 4 is located directly to the left of the fixed mold 3; the hydraulic cylinder 5 is mounted on the left side of the guide rail frame 2, and the telescopic rod of the hydraulic cylinder 5 is connected to the left side of the movable mold 4; it also includes a first cylinder 6, a cutting blade 7, a retraction mechanism, a baffle plate 9, a filling mechanism, a hollow cylinder 12, an inflation mechanism, and a sealing mechanism; four first cylinders 6 are symmetrically mounted vertically inside the fixed mold 3; a cutting blade 7 for removing the flash of the die-casting is slidably mounted inside the fixed mold 3, and the telescopic rods of the four first cylinders 6 are all connected to the right side of the cutting blade 7; the fixed mold 3 is equipped with The system includes a retraction mechanism with four baffle plates 9 for shielding the cutting blade 7. The retraction mechanism is used to retract and extend the baffle plates 9. A cutting groove 10 adapted to the cutting blade 7 is provided on the right side of the movable mold 4. A filling mechanism for filling the cutting groove 10 is provided inside the movable mold 4. A set of hollow cylinders 12 is provided on the inner side of both the fixed mold 3 and the movable mold 4. There are four hollow cylinders 12 in a set, and the four hollow cylinders 12 in the same set are symmetrically distributed vertically. An air outlet is provided on the left side of the hollow cylinder 12 in the fixed mold 3, and an air outlet is provided on the right side of the hollow cylinder 12 in the movable mold 4. The air outlets are used to guide gas to blow onto the die casting so that the die casting can be separated from the movable mold 4 and the fixed mold 3. An inflation mechanism and a sealing mechanism are provided inside both the fixed mold 3 and the movable mold 4. The inflation mechanism is used to inflate the hollow cylinder 12, and the sealing mechanism is used to seal the air outlet of the hollow cylinder 12.

[0028] See Figure 3 and Figure 4As shown, the retraction mechanism includes a bidirectional electric push rod 801, a U-shaped plate 802, a connecting plate 803, and a unidirectional electric push rod 804. The fixed mold 3 has bidirectional electric push rods 801 symmetrically arranged vertically. A U-shaped plate 802 connects the telescopic rods on the front sides of the two bidirectional electric push rods 801, and another U-shaped plate 802 connects the telescopic rods on the rear sides of the two bidirectional electric push rods 801. The two U-shaped plates 802 are symmetrically distributed front and back. Two sets of connecting plates 803 are rotatably arranged on the left side of the U-shaped plate 802. The two sets of connecting plates 803 on the same U-shaped plate 802 are symmetrically arranged vertically. Each set of connecting plates 803 has three connecting plates, and the four sets of connecting plates 803 are rotatably connected to four blocking plates 9. The connecting plates 803 are in an inclined state. The U-shaped plate 804... 2. Four one-way electric push rods 804 are symmetrically rotated on the left side. The telescopic rods of the four one-way electric push rods 804 are rotatably connected to the four baffle plates 9 respectively. The telescopic rods of the one-way electric push rods 804 are in an inclined state. By extending the telescopic rods of the one-way electric push rods 804, the baffle plates 9 on the upper and lower sides can be pressed to move to the upper left and lower left respectively, so that the connecting plate 803 gradually becomes horizontal. By shortening the telescopic rods of the one-way electric push rods 804, the baffle plates 9 on the upper and lower sides can be moved to the lower right and upper right respectively to reset, so that the connecting plate 803 gradually returns to its inclined state.

[0029] See Figures 5-7 As shown, the filling mechanism includes a square bar 1101, a first rack 1102, a gear 1103, a second rack 1104, and a first spring 1105; the square bar 1101 is slidably arranged in the cutting groove 10 of the movable mold 4; six first racks 1102 are symmetrically arranged vertically on the square bar 1101, and the first racks 1102 are slidably connected to the inner side of the movable mold 4; the gears 1103 are symmetrically rotatably arranged vertically on the inner side of the movable mold 4, and the number of gears 1103 is six, with six first racks 1104... A rack 1102 meshes with six gears 1103 respectively; a second rack 1104 is symmetrically slidably arranged on the inner side of the movable mold 4, and there are six second racks 1104. The six second racks 1104 mesh with the six gears 1103 respectively. The right end of the second rack 1104 extends outward from the inner side of the movable mold 4 so that the right end of the second rack 1104 contacts the fixed mold 3; a first spring 1105 is connected between the left side of the second rack 1104 and the inner side of the movable mold 4.

[0030] See Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the inflation mechanism includes an air pipe 1401 and a valve 1402; the four hollow cylinders 12 in the same group are connected by the air pipe 1401; the valve 1402 is installed on the air pipe 1401.

[0031] See Figures 2-7 As shown, the sealing mechanism includes a second cylinder 1501, a connecting plate 1502, and a sealing column 1503; the second cylinder 1501 is installed on the side of the hollow cylinder 12; the connecting plate 1502 is connected to the telescopic rod of the second cylinder 1501; the sealing column 1503 is slidably arranged inside the hollow cylinder 12, and the sealing column 1503 is used to seal the air outlet of the hollow cylinder 12 to prevent molten aluminum alloy from entering the hollow cylinder 12 through the air outlet; the sealing column 1503 is connected to the connecting plate 1502.

[0032] In use, first connect the air supply pipe to valve 1402, then extend the telescopic rod of hydraulic cylinder 5 to move the movable mold 4 to the right until the movable mold 4 and the fixed mold 3 are closed. During this process, when the movable mold 4 moves to the right, it will drive the second rack 1104 to move to the right. When the second rack 1104 contacts the fixed mold 3, the fixed mold 3 will squeeze the second rack 1104 to move to the left. The first spring 1105 is compressed, causing the second rack 1104 to drive the first rack 1102 to move to the right through gear 1103, thereby driving the square bar 1101 to move to the right, so that the right side of the square bar 1101 is flush with the right side of the movable mold 4, thus filling the cutting groove 10 to prevent molten aluminum alloy from flowing into the cutting groove 10.

[0033] After the movable mold 4 and the fixed mold 3 are closed, molten aluminum alloy is injected into the cavity between the movable mold 4 and the fixed mold 3 through the injection system for die casting. After the molten aluminum alloy is die cast, the connecting plate 1502 and the sealing column 1503 are driven by the second cylinder 1501 to move away from the air outlet of the hollow cylinder 12, so that the sealing column 1503 no longer blocks the air outlet of the hollow cylinder 12. Then, the extension rod of the hydraulic cylinder 5 is shortened, causing the extension rod of the hydraulic cylinder 5 to move the movable mold 4 to the left, thereby causing the movable mold 4 to move the second rack 1104 to the left. When the second rack 1104 separates from the fixed mold 3, the first spring 1105 returns to its original state, and the first spring 1105 drives the second rack 1104 to move to the right to reset, so that the second rack 1104 moves to the right to reset. The second rack 1104 drives the first rack 1102 to move to the left and reset via the gear 1103, thereby driving the square bar 1101 to move to the left and reset until the cutting groove 10 is fully exposed again. Then, the extension rod of the hydraulic cylinder 5 can be controlled to stop shortening, so that the movable mold 4 stops moving to the left. During this process, while controlling the extension rod of the hydraulic cylinder 5 to shorten, the valve 1402 on the left side is opened, so that the air in the pipeline enters the hollow cylinder 12 in the movable mold 4 through the air pipe 1401. This allows the air in the hollow cylinder 12 to be blown towards the die casting through the air outlet, thereby assisting the die casting to separate from the movable mold 4 and thus helping with demolding. After the movable mold 4 stops moving to the left, the valve 1402 on the left side is closed, and then the extension rod 804 is controlled to extend. The rod extends, causing the telescopic rod of the unidirectional electric push rod 804 to press the upper and lower side baffles 9 to move to the upper left and lower left respectively, thereby gradually bringing the connecting plate 803 to a horizontal state. Then, the telescopic rod of the bidirectional electric push rod 801 extends, causing the telescopic rod of the bidirectional electric push rod 801 to move the front and rear U-shaped plates 802 away from each other, thereby moving the front and rear side baffles 9 away from each other, so that the baffles 9 no longer block the cutting blade 7, thus freeing up the movement space for the cutting blade 7. Subsequently, the first cylinder 6 drives the cutting blade 7 to move to the left, so that the cutting blade 7 contacts the burr of the die-casting part, thereby cutting off the burr of the die-casting part, until the cutting blade 7 moves to the left and enters the cutting groove 10. After the burr of the die-casting part is completely removed, Next, the first cylinder 6 drives the cutting blade 7 to move to the right and reset, causing the cutting blade 7 to leave the cutting groove 10. Then, the telescopic rod of the bidirectional electric push rod 801 is shortened, causing the telescopic rod of the bidirectional electric push rod 801 to move the U-shaped plates 802 on both sides closer together and reset, thereby causing the blocking plates 9 on both sides to move closer together and reset. Then, the telescopic rod of the unidirectional electric push rod 804 is shortened, causing the telescopic rod of the unidirectional electric push rod 804 to move the blocking plates 9 on both sides to the lower right and upper right respectively and reset, thereby causing the connecting plate 803 to gradually return to its tilted state, and then causing the blocking plates 9 to block the cutting blade 7 again. Finally, the telescopic rod of the hydraulic cylinder 5 is shortened, causing the telescopic rod of the hydraulic cylinder 5 to move the movable mold 4 to the left and reset.Next, the valve 1402 on the right side is opened, allowing air from the pipeline to enter the hollow cylinder 12 inside the fixed mold 3 through the air pipe 1401. This allows the air inside the hollow cylinder 12 to be blown towards the die-casting part through the air outlet, assisting in the separation of the die-casting part from the fixed mold 3 and aiding in demolding. The die-casting part is then removed from the fixed mold 3, and the valve 1402 on the right side is closed. Finally, the connecting plate 1502 and the sealing column 1503 are moved and reset towards the side closer to the air outlet of the hollow cylinder 12 by the second cylinder 1501, so that the sealing column 1503 re-blocks the air outlet of the hollow cylinder 12.

[0034] See Figure 8 and Figure 9 As shown, it also includes a discharge frame 16; the discharge frame 16 is installed on the right side of the base 1. The discharge frame 16 is used to collect the flash cut off from the die casting. The bottom of the discharge frame 16 is set as an inclined surface, which is used to guide the flash forward for discharge.

[0035] By setting up the discharge frame 16, after the burrs of the die-casting part are removed, the removed burrs will fall down into the discharge frame 16, and the discharge frame 16 will collect the burrs. The burrs will then slide forward through the inclined surface at the bottom of the discharge frame 16 and be discharged. In this way, the removed burrs can be discharged in a concentrated manner.

[0036] See Figure 8 and Figure 9 As shown, it also includes a vibrating plate 17, a second spring 18, and a vibrating motor 19; the vibrating plate 17 is rotatably arranged inside the discharge frame 16, and the vibrating plate 17 is inclined. The inclined vibrating plate 17 is used to guide the flash to discharge forward; six second springs 18 are evenly spaced between the bottom front side of the vibrating plate 17 and the bottom of the discharge frame 16; the vibrating motors 19 are symmetrically installed on the bottom front side of the vibrating plate 17.

[0037] By setting up a vibrating plate 17, a second spring 18, and a vibrating motor 19, the vibrating plate 17 can be driven by the vibrating motor 19 to swing up and down during use, causing the second spring 18 to deform adaptively. When the cut-off burrs fall into the discharge frame 16, they will fall onto the vibrating plate 17, which will guide the burrs forward for discharge through vibration. This prevents the burrs from accumulating or clogging in the discharge frame 16, ensuring that the burrs can slide out continuously and smoothly, avoiding poor discharge or jamming, and improving the stability and automation of the discharge process.

[0038] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A die-casting mold for a new energy vehicle battery casing, comprising a base (1), a guide rail frame (2) mounted on the base (1), a fixed mold (3) mounted on the guide rail frame (2), a movable mold (4) slidably mounted on the guide rail frame (2), and a hydraulic cylinder (5) mounted on the guide rail frame (2), wherein the telescopic rod of the hydraulic cylinder (5) is connected to the movable mold (4), characterized in that, A first cylinder (6) is installed inside the fixed mold (3). A cutting blade (7) for removing the flash of the die-casting is slidably installed inside the fixed mold (3). The cutting blade (7) is connected to the telescopic rod of the first cylinder (6). A retraction mechanism is provided inside the fixed mold (3). A baffle plate (9) for blocking the cutting blade (7) is provided on the retraction mechanism. The retraction mechanism is used to retract the baffle plate (9). A cutting groove (1) adapted to the cutting blade (7) is opened on the movable mold (4). 0), the movable mold (4) is provided with a filling mechanism for filling the cutting groove (10), and both the fixed mold (3) and the movable mold (4) are provided with a hollow cylinder (12). The hollow cylinder (12) is provided with an air outlet, which is used to guide the gas to blow towards the die casting. Both the fixed mold (3) and the movable mold (4) are provided with an inflation mechanism and a sealing mechanism. The inflation mechanism is used to inflate the hollow cylinder (12), and the sealing mechanism is used to seal the air outlet of the hollow cylinder (12). The retraction mechanism includes a bidirectional electric push rod (801), a U-shaped plate (802), a connecting plate (803), and a unidirectional electric push rod (804). The bidirectional electric push rod (801) is installed inside the fixed mold (3). The telescopic rods on both sides of the bidirectional electric push rod (801) are connected to the U-shaped plate (802). The connecting plate (803) is symmetrically and rotatably connected to the U-shaped plate (802). The connecting plate (803) is rotatably connected to the shielding plate (9). The unidirectional electric push rod (804) is symmetrically and rotatably installed on the U-shaped plate (802). The telescopic rod of the unidirectional electric push rod (804) is rotatably connected to the shielding plate (9). The filling mechanism includes a square bar (1101), a first rack (1102), a gear (1103), a second rack (1104), and a first spring (1105). The square bar (1101) is slidably arranged in the cutting groove (10) of the movable mold (4). The first rack (1102) is connected to the square bar (1101). The gear (1103) is rotatably arranged in the movable mold (4). The first rack (1102) meshes with the gear (1103). The second rack (1104) is slidably arranged in the movable mold (4). The second rack (1104) meshes with the gear (1103). The first spring (1105) is connected between the second rack (1104) and the movable mold (4).

2. The die-casting mold for a new energy vehicle battery casing according to claim 1, characterized in that, The inflation mechanism includes an air pipe (1401) and a valve (1402). The air pipe (1401) is connected to the hollow cylinder (12), and the valve (1402) is installed on the air pipe (1401).

3. The die-casting mold for a new energy vehicle battery casing according to claim 1, characterized in that, The sealing mechanism includes a second cylinder (1501), a connecting plate (1502), and a sealing column (1503). The second cylinder (1501) is installed on the side of the hollow cylinder (12). The connecting plate (1502) is connected to the telescopic rod of the second cylinder (1501). The sealing column (1503) is slidably arranged inside the hollow cylinder (12). The sealing column (1503) is used to block the air outlet of the hollow cylinder (12). The sealing column (1503) is connected to the connecting plate (1502).

4. The die-casting mold for a new energy vehicle battery casing according to claim 1, characterized in that, It also includes a discharge frame (16), which is installed on the base (1) and is used to collect the flash cut off from the die casting.

5. A die-casting mold for a new energy vehicle battery casing according to claim 4, characterized in that, The bottom of the discharge frame (16) is set as a slope, which is used to guide the flash to discharge.

6. A die-casting mold for a new energy vehicle battery casing according to claim 4, characterized in that, It also includes a vibrating plate (17), a second spring (18) and a vibrating motor (19). The vibrating plate (17) is rotatably installed inside the discharge frame (16). The second spring (18) is connected between the bottom of the vibrating plate (17) and the bottom of the discharge frame (16). The vibrating motor (19) is installed at the bottom of the vibrating plate (17).

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