A battery shell injection mold

Abstract

The present invention belongs to the technical field of battery shell processing, and discloses a battery shell injection mold, including a frame, a mold assembly is provided in the middle of the frame, demoulding assemblies are installed at both ends of the mold assembly, and power assemblies are installed at the ends of the two demoulding assemblies away from the mold assembly, and the power assembly is fixedly sleeved with the frame; the mold assembly includes an upper mold and a lower mold, and the upper mold and the lower mold are distributed up and down, and the relatively close ends of the upper mold and the lower mold are in contact with each other. The present invention is provided with an upper mold and a lower mold, and air storage boxes are installed on one side of the upper mold and the lower mold respectively, so that before injection molding, the air inside the upper mold and the lower mold can be guided out and temporarily stored by the action of a negative pressure pump, providing a power source for subsequent discharge, and at the same time, the upper mold and the lower mold can be kept close to a vacuum state, reducing the bubble problem caused by air and improving the quality of the finished product.

Description

Technical Field

[0001] The invention belongs to the technical field of battery shell processing, in particular to a battery shell injection mold. Background Art

[0002] The battery case is an important part of the battery. Its main function is to contain the electrolyte and the plate group, and provide necessary protection and support. The battery case is mainly manufactured by injection molding. Battery case injection molding is a process in which molten plastic material is injected into a mold through an injection molding machine, and the battery shell is formed after cooling and solidification. In the injection molding process of the battery case, the injection mold is an important part.

[0003] Conventional battery injection molds are mainly composed of an upper mold, a lower mold, an injection port and other structures. During injection molding, the molten plastic is injected into the interior of the mold through the injection port. After cooling inside the mold, the battery shell can be obtained. However, during injection molding, the current injection molds have a certain amount of air inside the mold, which causes certain bubbles to appear in the molded shell, causing the quality of the shell to be affected to a certain extent.

[0004] At the same time, during the injection molding process of the battery shell, due to the small gap between the injection mold and the shell, the injection mold is prone to adhesion to the shell. When demolding, it is necessary to knock before the demolding process can be carried out. The entire demolding process is relatively complicated and cannot achieve fast demolding operations. Summary of the invention

[0005] The object of the present invention is to provide a battery housing injection mold to solve the problems raised in the above background technology.

[0006] In order to achieve the above object, the present invention provides the following technical solutions: a battery housing injection mold, comprising a frame, a mold assembly is provided in the middle of the frame, demoulding assemblies are installed at both ends of the mold assembly, and power assemblies are installed at one end of the two demoulding assemblies away from the mold assembly, and the power assembly is fixedly sleeved with the frame;

[0007] The mold assembly includes an upper mold and a lower mold, and the upper mold and the lower mold are distributed up and down. The relatively close ends of the upper mold and the lower mold are in contact with each other. Extended ear plates are fixedly installed at the left and right ends of the upper mold and the lower mold. The internal movably sleeve of the extended ear plates is connected with a guide rod. The upper mold and the lower mold are displaced up and down relative to the guide rod. Magnets are installed at the upper and lower ends of the guide rod. Injection valves are fixedly installed in the middle of the relatively far end of the upper mold and the lower mold.

[0008] Before the injection molding process, the plastic raw materials need to be melted. After the melting process is completed, the mold assembly needs to be kept in the initial state, that is, the upper mold and the lower mold are in close contact to ensure that the upper mold and the lower mold are in a sealed state to complete the preparation before the injection molding process.

[0009] As a further technical solution of the present invention, a breathable membrane is movably installed inside the upper mold and the lower mold. The breathable membrane is located at one end of the injection valve, and the middle of the injection valve corresponds to the middle of the breathable membrane.

[0010] As a further technical solution of the present invention, guide grooves are provided on both left and right ends of the upper mold and the lower mold, and mounting rods are fixedly installed on both left and right ends of the two breathable membranes that are relatively far away from one side. The mounting rods pass through one side of the guide groove and are movably connected with the guide groove.

[0011] When the injection molding of the shell is completed and it is necessary to discharge the material, due to the relative distance between the upper mold and the lower mold, the distance between the upper mold and the lower mold increases, and the mounting rod moves up and down relative to the guide groove. When the upper mold moves to the highest point and the lower mold moves to the lowest point, the bottom end of the upper mold can be higher than the top of the upper breathable membrane, and the top of the lower mold is higher than the bottom end of the lower breathable membrane. At this time, the battery shell can be clamped in the position between the two breathable membranes. At the same time, the upper and lower mounting rods can be moved forward and backward respectively, so that the mounting rods are displaced relative to the guide groove, and the two breathable membranes are driven to move forward and backward respectively. At this time, the top of the shell can be quickly demolded to complete the final demolding process.

[0012] By reusing the automatic separation process of the upper mold and the lower mold, the two breathable membranes can be displaced forward and backward after the upper mold and the lower mold reach the predetermined position, so that the shell is still supported after demoulding, and the upper and lower ends of the shell are quickly separated by the displacement of the two breathable membranes, so that while completing the rapid demoulding on all sides, the upper and lower ends can also be quickly separated, thereby shortening the falling-off time and further improving the demoulding effect.

[0013] As a further technical solution of the present invention, the left and right power assemblies are diagonally arranged, and the power assembly includes a temporary storage tube, the outer side surface of the temporary storage tube is fixedly sleeved on the frame, one end of the two temporary storage tubes close to the mold assembly is fixedly connected to an air intake valve, and one end of the two temporary storage tubes away from the mold assembly is fixedly connected to an exhaust valve.

[0014] As a further technical solution of the present invention, one end of the air intake valve away from the temporary storage tube is fixedly connected to the air intake pipe, and one end of the air intake pipe away from the temporary storage tube is fixedly connected to an air storage box, the air storage box is connected to the upper mold and the lower mold, the air intake end of the air storage box is located between the upper mold and the breathable membrane and between the lower mold and the breathable membrane, and a negative pressure pump is installed at one end of the air storage box.

[0015] As a further technical solution of the present invention, a one-way valve is installed inside the intake valve and the exhaust valve, and the valve direction inside the intake valve is inwardly open and outwardly closed, and the valve direction inside the exhaust valve is outwardly open and inwardly closed.

[0016] When performing injection molding of the battery shell, first ensure that there is no gap between the upper mold and the lower mold, and turn on the negative pressure pump. At this time, negative pressure can be generated inside the air storage box, and negative pressure can be generated inside the upper mold and the lower mold. At this time, the air inside the upper mold and the lower mold can be sucked into the interior of the air storage box for temporary storage. When the interior of the upper mold and the lower mold is close to a vacuum state, molten plastic can be injected into the interior of the upper mold and the lower mold through the injection valve. At this time, the molten plastic can pass through the two injection valves into between the two breathable membranes, and can be cooled and molded after external air cooling to form a battery shell.

[0017] By providing an upper mold and a lower mold, and installing air storage boxes on one side of the upper mold and the lower mold respectively, before injection molding, the air inside the upper mold and the lower mold can be discharged through the action of a negative pressure pump and temporarily stored to provide a power source for subsequent material discharge. At the same time, the upper mold and the lower mold can be kept in a near vacuum state, thereby reducing the bubble problem caused by air and improving the quality of the finished product.

[0018] As a further technical solution of the present invention, one end of the exhaust valve away from the temporary storage tube is fixedly connected to an exhaust pipe, and the other end of the exhaust pipe is located between the upper mold and the lower mold.

[0019] As a further technical solution of the present invention, a piston plate is movably sleeved inside the temporary storage tube, and the relatively close ends of the two piston plates are fixedly connected with piston rods, and the relatively close ends of the two piston rods pass through one end of the temporary storage tube and are connected to the demolding assembly, and the outer side surface of the piston rod is movably sleeved with a limit spring, and the left and right ends of the limit spring are respectively connected to one end of the piston plate and one end of the inner cavity of the temporary storage tube.

[0020] When the battery shell is cooled and formed, it needs to be discharged. The negative pressure pump can be turned on to pressurize the air temporarily stored in the air storage box and pass it into the intake pipe. At this time, the air can enter the temporary storage pipe through the intake valve and apply pressure to the piston plate. At this time, the limit spring can be stretched, driving the two piston rods to move relatively apart, and driving the two piston plates to move relatively apart, while applying force to the two demoulding components.

[0021] As a further technical solution of the present invention, the demolding assembly includes a transmission frame, one end of the piston rod is connected to the middle part of the transmission frame, and first fixed seats are installed at the four corners of the transmission frame away from one end of the piston rod, one end of the first fixed seat away from the transmission frame is movably connected to a connecting rod through a rotating shaft, and one end of the connecting rod away from the first fixed seat is movably connected to a second fixed seat through a rotating shaft.

[0022] As a further technical solution of the present invention, the second fixing seat located at the top is connected to one side of the upper mold, and the second fixing seat located at the bottom is connected to one side of the lower mold.

[0023] Under the action of the piston rod, the two transmission frames move relatively apart and exert a force on the second fixed seat. At this time, multiple connecting rods deflect toward the middle, and the angle between the two connecting rods decreases, and exerts a force on the upper mold and the lower mold. At this time, the upper mold and the lower mold move relatively apart until the piston rod moves to one side of the exhaust valve. At this time, the upper mold and the lower mold move to the predetermined position, that is, they contact the upper and lower magnets. At this time, the demoulding process of the shell around can be completed, and the compressed air can be discharged through the exhaust pipe to further cool the battery shell.

[0024] By utilizing the air during the negative pressure absorption in the early stage, the air is injected into the interior of the power component after being pressurized. The power provided by the power component cooperates with the action of the demoulding component to achieve rapid separation between the upper mold and the lower mold. At the same time, the excess air can be directly used on the surface of the shell after injection molding, which can achieve rapid demoulding and assist in the rapid molding of the shell, thereby improving processing efficiency.

[0025] The beneficial effects of the present invention are as follows:

[0026] 1. The present invention is provided with an upper mold and a lower mold, and air storage boxes are installed on one side of the upper mold and the lower mold respectively, so that before injection molding, the air inside the upper mold and the lower mold can be discharged and temporarily stored through the action of a negative pressure pump to provide a power source for subsequent material discharge. At the same time, the upper mold and the lower mold can be kept in a near vacuum state, thereby reducing the bubble problem caused by air and improving the quality of the finished product.

[0027] 2. The present invention utilizes the air during the previous negative pressure absorption, and injects the air into the interior of the power component after pressurization. The power provided by the power component cooperates with the action of the demolding component to achieve rapid separation between the upper mold and the lower mold. At the same time, the excess air can be directly used on the surface of the shell after injection molding, which can achieve rapid demolding and assist in rapid molding of the shell, thereby improving processing efficiency.

[0028] 3. The present invention reuses the automatic separation process of the upper mold and the lower mold, so that after the upper mold and the lower mold reach the predetermined position, the two breathable membranes can be displaced forward and backward, so that the shell is still supported after demoulding, and the upper and lower ends of the shell are quickly separated by the displacement of the two breathable membranes, so that the upper and lower ends can be quickly separated while completing the rapid demoulding on all sides, thereby shortening the falling-off time and further improving the demoulding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the coordination of the power assembly and the air storage box structure of the present invention;

[0031] Figure 3 It is a schematic diagram of the coordination of the air intake pipe and the air storage box structure of the present invention;

[0032] Figure 4 It is a cross-sectional schematic diagram of the internal structure of the power assembly of the present invention;

[0033] Figure 5 It is a separate schematic diagram of the demoulding component structure of the present invention;

[0034] Figure 6 It is a cross-sectional schematic diagram of the internal structure of the mold assembly of the present invention;

[0035] Figure 7 It is a separate schematic diagram of the upper mold structure of the present invention;

[0036] Figure 8 for Figure 4 A magnified schematic diagram of the structure in the middle.

[0037] In the figure: 1. frame; 2. mold assembly; 201. upper mold; 202. lower mold; 203. extension ear plate; 204. injection valve; 205. guide groove; 206. mounting rod; 207. breathable membrane; 3. guide rod; 4. magnet; 5. demoulding assembly; 501. transmission frame; 502. first fixed seat; 503. second fixed seat; 504. connecting rod; 6. power assembly; 601. temporary storage tube; 602. intake valve; 603. exhaust valve; 604. piston plate; 605. piston rod; 606. limit spring; 7. intake pipe; 8. air storage tank; 9. negative pressure pump; 10. exhaust pipe. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] like Figures 1 to 8 As shown, in the embodiment of the present invention, a battery housing injection mold includes a frame 1, a mold assembly 2 is provided in the middle of the frame 1, demoulding assemblies 5 are installed at both ends of the mold assembly 2, and power assemblies 6 are installed at one end of the two demoulding assemblies 5 away from the mold assembly 2, and the power assembly 6 is fixedly sleeved with the frame 1;

[0040] The mold assembly 2 includes an upper mold 201 and a lower mold 202, and the upper mold 201 and the lower mold 202 are distributed up and down. The relatively close ends of the upper mold 201 and the lower mold 202 are in contact with each other. The left and right ends of the upper mold 201 and the lower mold 202 are fixedly installed with extended ear plates 203, and the internal movable sleeve of the extended ear plates 203 is connected with a guide rod 3. The upper mold 201 and the lower mold 202 are displaced up and down relative to the guide rod 3, and magnets 4 are installed at the upper and lower ends of the guide rod 3. An injection valve 204 is fixedly installed in the middle of the upper mold 201 and the lower mold 202 relatively far away from one end.

[0041] Before the injection molding process, the plastic raw materials need to be melted. After the melting process is completed, the mold assembly 2 needs to be kept in the initial state, that is, the upper mold 201 and the lower mold 202 are in close contact to ensure that the upper mold 201 and the lower mold 202 are in a sealed state to complete the preparation before the injection molding process.

[0042] like Figure 1 and Figure 6 as well as Figure 7As shown, a breathable membrane 207 is movably installed inside the upper mold 201 and the lower mold 202. The breathable membrane 207 is located at one end of the injection valve 204, and the middle of the injection valve 204 corresponds to the middle of the breathable membrane 207. Guide grooves 205 are provided on the left and right ends of the upper mold 201 and the lower mold 202. Mounting rods 206 are fixedly installed on the left and right ends of the two breathable membranes 207 that are relatively far away from each other. The mounting rod 206 passes through one side of the guide groove 205 and is movably engaged with the guide groove 205.

[0043] When the injection molding of the shell is completed and it is necessary to discharge the material, due to the relative distance between the upper mold 201 and the lower mold 202, the distance between the upper mold 201 and the lower mold 202 increases, and the mounting rod 206 moves up and down relative to the guide groove 205. When the upper mold 201 moves to the highest point and the lower mold 202 moves to the lowest point, the bottom end of the upper mold 201 can be higher than the top end of the upper breathable membrane 207, and the top end of the lower mold 202 is higher than the bottom end of the lower breathable membrane 207. At this time, the battery shell can be clamped between the two breathable membranes 207. At the same time, the upper and lower mounting rods 206 can be moved forward and backward respectively, so that the mounting rods 206 are displaced relative to the guide groove 205, and the two breathable membranes 207 are driven to move forward and backward respectively. At this time, the top of the shell can be quickly demolded to complete the final demolding process.

[0044] By reusing the automatic separation process of the upper mold 201 and the lower mold 202, the upper mold 201 and the lower mold 202 can realize the front-back displacement of the two breathable membranes 207 after reaching the predetermined position, so that the shell is still supported after demoulding, and the upper and lower ends of the shell are quickly separated by the displacement of the two breathable membranes 207, so that while completing the rapid demoulding on all sides, the upper and lower ends can also be quickly separated, thereby shortening the falling-off time and further improving the demoulding effect.

[0045] like Figure 2 and Figure 3 as well as Figure 4 and Figure 8As shown, the left and right power assemblies 6 are arranged diagonally, and the power assembly 6 includes a temporary storage tube 601. The outer side of the temporary storage tube 601 is fixedly sleeved with the frame 1. One end of the two temporary storage tubes 601 close to the mold assembly 2 is fixedly connected to the air intake valve 602, and one end of the two temporary storage tubes 601 away from the mold assembly 2 is fixedly connected to the exhaust valve 603. The end of the air intake valve 602 away from the temporary storage tube 601 is fixedly connected to the air intake pipe 7, and the end of the air intake pipe 7 away from the temporary storage tube 601 is fixedly connected to the exhaust valve 603. An air storage box 8 is connected, and the air storage box 8 is connected with the upper mold 201 and the lower mold 202. The air inlet end of the air storage box 8 is located between the upper mold 201 and the breathable membrane 207 and between the lower mold 202 and the breathable membrane 207. A negative pressure pump 9 is installed at one end of the air storage box 8. Check valves are installed inside the air inlet valve 602 and the exhaust valve 603, and the valve direction inside the air inlet valve 602 is inward conduction and outward cutoff, and the valve direction inside the exhaust valve 603 is outward conduction and inward cutoff.

[0046] Embodiment: When performing injection molding of a battery shell, it is first necessary to ensure that there is no gap between the upper mold 201 and the lower mold 202, and by turning on the negative pressure pump 9, negative pressure can be generated inside the air storage box 8, and negative pressure can be generated inside the upper mold 201 and the lower mold 202. At this time, the air inside the upper mold 201 and the lower mold 202 can be sucked into the interior of the air storage box 8 for temporary storage. When the interior of the upper mold 201 and the lower mold 202 is close to a vacuum state, molten plastic can be injected into the interior of the upper mold 201 and the lower mold 202 through the injection valve 204. At this time, the molten plastic can pass through the two injection valves 204 and enter between the two breathable membranes 207, and can be cooled and molded after external air cooling to form a battery shell.

[0047] By providing an upper mold 201 and a lower mold 202, and installing an air storage box 8 on one side of the upper mold 201 and the lower mold 202 respectively, before injection molding, the air inside the upper mold 201 and the lower mold 202 can be discharged and temporarily stored through the action of the negative pressure pump 9 to provide a power source for subsequent material discharge. At the same time, the upper mold 201 and the lower mold 202 can be kept in a near vacuum state, thereby reducing the bubble problem caused by air and improving the quality of the finished product.

[0048] like Figure 1 and Figure 4 as well as Figure 8As shown, one end of the exhaust valve 603 away from the temporary storage tube 601 is fixedly connected to the exhaust pipe 10, and the other end of the exhaust pipe 10 is located between the upper mold 201 and the lower mold 202. The interior of the temporary storage tube 601 is movably sleeved with a piston plate 604, and the relatively close ends of the two piston plates 604 are fixedly connected with a piston rod 605. The relatively close ends of the two piston rods 605 penetrate one end of the temporary storage tube 601 and are connected to the demoulding component 5. The outer side surface of the piston rod 605 is movably sleeved with a limit spring 606, and the left and right ends of the limit spring 606 are respectively connected to one end of the piston plate 604 and one end of the inner cavity of the temporary storage tube 601.

[0049] When the battery shell is cooled and formed, it needs to be discharged. The negative pressure pump 9 can be turned on to pressurize the air temporarily stored in the air storage box 8 and pass it into the interior of the air intake pipe 7. At this time, the air can enter the interior of the temporary storage tube 601 through the air intake valve 602 and apply pressure to the piston plate 604. At this time, the limit spring 606 can be stretched and drive the two piston rods 605 to move relatively apart, and drive the two piston plates 604 to move relatively apart, while applying force to the two demolding components 5.

[0050] like Figure 1 and Figure 5 As shown, the demoulding assembly 5 includes a transmission frame 501, one end of the piston rod 605 is connected to the middle part of the transmission frame 501, and the first fixed seats 502 are installed at the four corners of the transmission frame 501 away from the end of the piston rod 605, the first fixed seats 502 are connected to the connecting rod 504 at the end away from the transmission frame 501 through a rotating shaft, and the connecting rod 504 is connected to the second fixed seat 503 at the end away from the first fixed seat 502 through a rotating shaft. The second fixed seat 503 located at the top is connected to one side of the upper mold 201, and the second fixed seat 503 located at the bottom is connected to one side of the lower mold 202.

[0051] Embodiment: Under the action of the piston rod 605, the two transmission frames 501 move away from each other and apply a force to the second fixed seat 503. At this time, the multiple connecting rods 504 deflect toward the middle, and the angle between the two connecting rods 504 decreases, and a force is applied to the upper mold 201 and the lower mold 202. At this time, the upper mold 201 and the lower mold 202 move away from each other until the piston rod 605 moves to one side of the exhaust valve 603. At this time, the upper mold 201 and the lower mold 202 move to a predetermined position, that is, they contact the upper and lower magnets 4. At this time, the demoulding process of the shell around can be completed. At the same time, the compressed air can be discharged through the exhaust pipe 10 to further cool the battery shell.

[0052] By utilizing the air from the previous negative pressure absorption, the air is pressurized and injected into the interior of the power component 6. The power provided by the power component 6 cooperates with the demolding component 5 to achieve rapid separation between the upper mold 201 and the lower mold 202. At the same time, excess air can be directly used on the surface of the shell after injection molding, which can achieve rapid demolding and assist in rapid molding of the shell, thereby improving processing efficiency.

[0053] Working principle and usage process:

[0054] Before the injection molding process, the plastic raw material needs to be melted. After the melting process is completed, the mold assembly 2 needs to be kept in the initial state, that is, the upper mold 201 and the lower mold 202 are in close contact, ensuring that the upper mold 201 and the lower mold 202 are in a sealed state, completing the preparation before the injection molding process;

[0055] When performing injection molding of the battery housing, it is first necessary to ensure that there is no gap between the upper mold 201 and the lower mold 202, and by turning on the negative pressure pump 9, negative pressure can be generated inside the air storage box 8, and negative pressure can be generated inside the upper mold 201 and the lower mold 202. At this time, the air inside the upper mold 201 and the lower mold 202 can be sucked into the interior of the air storage box 8 for temporary storage. When the interior of the upper mold 201 and the lower mold 202 is close to a vacuum state, molten plastic can be injected into the interior of the upper mold 201 and the lower mold 202 through the injection valve 204. At this time, the molten plastic can pass through the two injection valves 204 and enter between the two breathable membranes 207, and can be cooled and molded after external air cooling to form a battery housing;

[0056] When the battery shell is cooled and formed, and needs to be discharged, the negative pressure pump 9 can be turned on to pressurize the air temporarily stored in the air storage box 8 and pass it into the air inlet pipe 7. At this time, the air can enter the temporary storage pipe 601 through the air inlet valve 602 and apply pressure to the piston plate 604. At this time, the limit spring 606 can be stretched and drive the two piston rods 605 to move away from each other, and drive the two piston plates 604 to move away from each other, and at the same time apply force to the two demoulding components 5;

[0057] Under the action of the piston rod 605, the two transmission frames 501 move relatively away from each other and exert a force on the second fixing seat 503. At this time, the multiple connecting rods 504 deflect toward the middle, and the angle between the two connecting rods 504 decreases, and exerts a force on the upper mold 201 and the lower mold 202. At this time, the upper mold 201 and the lower mold 202 move relatively away from each other until the piston rod 605 moves to one side of the exhaust valve 603. At this time, the upper mold 201 and the lower mold 202 move to a predetermined position, that is, they contact the upper and lower magnets 4. At this time, the demoulding process of the shell around can be completed, and the compressed air can be discharged through the exhaust pipe 10 to further cool the battery shell.

[0058] When the injection molding of the shell is completed and it is necessary to discharge the material, due to the relative distance between the upper mold 201 and the lower mold 202, the distance between the upper mold 201 and the lower mold 202 increases, and the mounting rod 206 moves up and down relative to the guide groove 205. When the upper mold 201 moves to the highest point and the lower mold 202 moves to the lowest point, the bottom end of the upper mold 201 can be higher than the top end of the upper breathable membrane 207, and the top end of the lower mold 202 is higher than the bottom end of the lower breathable membrane 207. At this time, the battery shell can be clamped between the two breathable membranes 207. At the same time, the upper and lower mounting rods 206 can be moved forward and backward respectively, so that the mounting rods 206 are displaced relative to the guide groove 205, and the two breathable membranes 207 are driven to move forward and backward respectively. At this time, the top of the shell can be quickly demolded to complete the final demolding process.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery housing injection mold, comprising a frame (1), characterized in that: A mold assembly (2) is provided in the middle of the frame (1), demoulding assemblies (5) are installed at both left and right ends of the mold assembly (2), and power assemblies (6) are installed at the ends of the two demoulding assemblies (5) away from the mold assembly (2), and the power assemblies (6) are fixedly sleeved to the frame (1); The mold assembly (2) comprises an upper mold (201) and a lower mold (202), the upper mold (201) and the lower mold (202) are arranged in an upper and lower arrangement, the relatively close ends of the upper mold (201) and the lower mold (202) are in contact with each other, the left and right ends of the upper mold (201) and the lower mold (202) are fixedly mounted with extended ear plates (203), the inner part of the extended ear plates (203) is movably sleeved with a guide rod (3), the upper mold (201) and the lower mold (202) are displaced up and down relative to the guide rod (3), the upper and lower ends of the guide rod (3) are both mounted with magnets (4), and the middle part of the relatively far end of the upper mold (201) and the lower mold (202) is fixedly mounted with an injection valve (204); A breathable membrane (207) is movably installed inside the upper mold (201) and the lower mold (202), and the breathable membrane (207) is located at one end of the injection valve (204), and the middle of the injection valve (204) corresponds to the middle of the breathable membrane (207). The two power assemblies (6) on the left and right are arranged diagonally, and the power assembly (6) comprises a temporary storage tube (601). The outer side surface of the temporary storage tube (601) is fixedly sleeved with the frame (1), and one end of the two temporary storage tubes (601) close to the mold assembly (2) is fixedly connected to the air intake valve (602), and one end of the two temporary storage tubes (601) away from the mold assembly (2) is fixedly connected to the exhaust valve (603); One end of the air inlet valve (602) away from the temporary storage tube (601) is fixedly connected to an air inlet tube (7), and one end of the air inlet tube (7) away from the temporary storage tube (601) is fixedly connected to an air storage box (8). The air storage box (8) is connected to the upper mold (201) and the lower mold (202). The air inlet end of the air storage box (8) is located between the upper mold (201) and the air permeable membrane (207) and between the lower mold (202) and the air permeable membrane (207). One end of the air storage box (8) is installed with a negative pressure pump (9). The insides of the air inlet valve (602) and the exhaust valve (603) are both installed with a one-way valve, and the valve inside the air inlet valve (602) The direction is inwardly open and outwardly closed, and the direction of the valve inside the exhaust valve (603) is outwardly open and inwardly closed; the interior of the temporary storage tube (601) is movably sleeved with a piston plate (604), and the relatively close ends of the two piston plates (604) are fixedly connected with a piston rod (605), and the relatively close ends of the two piston rods (605) penetrate one end of the temporary storage tube (601) and are connected to the demoulding component (5); the outer side surface of the piston rod (605) is movably sleeved with a limit spring (606), and the left and right ends of the limit spring (606) are respectively connected to one end of the piston plate (604) and one end of the inner cavity of the temporary storage tube (601); The demoulding assembly (5) comprises a transmission frame (501), one end of the piston rod (605) is connected to the middle part of the transmission frame (501), and first fixed seats (502) are installed at four corners of the transmission frame (501) away from one end of the piston rod (605), one end of the first fixed seat (502) away from the transmission frame (501) is movably connected to a connecting rod (504) via a rotating shaft, and one end of the connecting rod (504) away from the first fixed seat (502) is movably connected to a second fixed seat (503) via a rotating shaft; the second fixed seat (503) located at the top is connected to one side of the upper mold (201), and the second fixed seat (503) located at the bottom is connected to one side of the lower mold (202).

2. The battery housing injection mold according to claim 1, characterized in that: The left and right ends of the upper mold (201) and the lower mold (202) are both provided with guide grooves (205), and the left and right ends of the two air-permeable membranes (207) that are relatively far away from each other are both fixedly installed with mounting rods (206), and the mounting rods (206) penetrate one side of the guide groove (205) and are movably engaged with the guide groove (205).

3. The battery housing injection mold according to claim 2, characterized in that: One end of the exhaust valve (603) away from the temporary storage tube (601) is fixedly connected to an exhaust pipe (10), and the other end of the exhaust pipe (10) is located between the upper mold (201) and the lower mold (202).

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