High-strength new energy automobile battery pack aluminum shell die-casting equipment

Abstract

The invention discloses a high-strength new energy automobile battery pack aluminum shell die-casting device, and relates to the technical field of new energy automobile battery pack aluminum shell die-casting, the high-strength new energy automobile battery pack aluminum shell die-casting device comprises a supporting base, a fixed die, a movable die, a die opening auxiliary mechanism and a buffer mechanism, the die opening auxiliary mechanism comprises a reciprocating telescopic mechanism and a push-pull plate used for pushing the movable die, the buffering mechanism is arranged between the movable mold and the supporting base in a matched mode. When the movable die and the fixed die for die casting of the high-strength battery pack aluminum shell are stuck in the die opening process, an arranged push-pull plate is separated from the movable die in the die opening process, the push-pull plate compresses a first limiting spring, the first limiting spring generates resilience force to act on the movable die, and the movable die is fixed to the fixed die. And meanwhile, the vibrator is started to generate a vibration effect on the movable mold and the fixed mold which are clamped together to assist mold opening, so that the problems that the mold opening difficulty is high and potential safety hazards exist due to manual adjustment are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of die-casting technology for aluminum shells of new energy vehicle battery packs, and particularly relates to a die-casting device for an aluminum shell of a high-strength new energy vehicle battery pack. Background Art

[0002] Currently, the outer shells of new energy vehicle battery packs generally adopt aluminum materials. Since the density of aluminum is relatively low, about one-third of that of steel, the aluminum shell can effectively reduce the weight of the battery pack. Lightweight is one of the key factors for new energy vehicles to increase their cruising range. Generally, the aluminum shells of battery packs are manufactured by die-casting process. The die-cast aluminum shell has relatively high tensile strength and can meet the requirements of the battery shell for strength and impact resistance.

[0003] The existing die-casting devices for aluminum shells of battery packs include a moving die, a fixed die, and an injection assembly. The aluminum metal is heated to a molten state. After the moving die and the fixed die are closed, the molten aluminum liquid is injected into the inner cavity of the die of the die-casting machine under high pressure through the injection assembly. The aluminum liquid fills the die under high pressure and solidifies to form a shape. After forming, the die is opened to eject the workpiece for subsequent processing.

[0004] The deficiencies of the existing die-casting devices for aluminum shells of battery packs are as follows: Although the existing die-casting devices can effectively complete the die-casting process, over time, the die may be unable to open smoothly due to impurities such as material residues and oil stains adhering to the die; or the die may be deformed or damaged, which may also cause the die to get stuck. There may also be a situation where the clamping force increases due to the die heating and expanding, resulting in the die getting stuck and unable to be effectively opened. Generally, in such cases, manual adjustment of the original system oil pressure by relying on manual labor is required to increase the pressure to assist in opening the die or to adjust components such as the relevant valves of the die through tools. Adjusting the system oil pressure may cause the original system oil pressure to be too high, resulting in pipeline bursting and damage. At the same time, it may also pose a danger to the adjusting and maintenance personnel. Adjusting components such as the relevant valves of the die requires considering the die during operation, which poses a certain danger to the maintenance personnel. Once the die suddenly opens during the maintenance process due to unlocking, it is very easy to cause harm to the maintenance personnel. Moreover, manually assisting in opening the stuck die is a laborious operation process and is not convenient enough. Summary of the Invention

[0005] The purpose of the present invention is to provide a die-casting device for an aluminum shell of a high-strength new energy vehicle battery pack to solve the technical problems in the prior art that when the die of the die-casting device for the aluminum shell of the new energy vehicle battery pack gets stuck and cannot be opened, manual adjustment is relied on to assist in opening the die, and the operation is not safe and convenient enough.

[0006] The technical problems to be solved by the present invention can be achieved through the following technical solutions:

[0007] A die-casting device for an aluminum shell of a high-strength new energy vehicle battery pack, comprising a support base, a fixed mold and a movable mold. A shot mechanism for injecting aluminum liquid is arranged on the movable mold, and further comprising:

[0008] An opening mold assisting mechanism, which includes a reciprocating telescopic mechanism and a push-pull plate for pushing the movable mold. The push-pull plate is connected to the driving end of the reciprocating telescopic mechanism in a matching manner. A limiting plate is fixedly arranged on one side of the movable mold. The push-pull plate is located between the limiting plate and the movable mold. A first limiting spring is arranged between the limiting plate and the push-pull plate, and a pressure sensing switch is connected to the limiting plate in a matching manner. Vibrators electrically connected to the pressure sensing switch are distributed on both sides of the fixed mold;

[0009] A buffering mechanism, which is arranged between the movable mold and the support base in a matching manner.

[0010] As a further scheme of the present invention: the opening mold assisting mechanism further includes an anti-collision limiting mechanism, which includes a connecting pipe, a through rod and a one-way stopper. The connecting pipe is horizontally and fixedly connected between the limiting plate and the movable mold, and the connecting pipe penetrates through the push-pull plate. The connecting pipe is a hollow body. The through rod is horizontally arranged inside the connecting pipe. A plurality of one-way stoppers are provided and are horizontally and equidistantly distributed on the through rod. Each one-way stopper is movably connected to the through rod through a return hinge. A plurality of through holes are horizontally and equidistantly opened on the connecting pipe. The one-way stoppers correspondingly pass through the through holes, and the one-way stoppers are located on the side of the through holes close to the movable mold.

[0011] As a further scheme of the present invention: a strip-shaped through opening is opened on the limiting plate at a position close to the connecting pipe. The through rod extends through the strip-shaped through opening, and an electric telescopic rod is fixedly connected to the outer wall of the limiting plate. A linkage frame is connected between the telescopic end of the electric telescopic rod and the through rod.

[0012] As a further scheme of the present invention: the buffering mechanism includes a linkage docking mechanism, a sliding frame, a strip-shaped sliding groove and an elastic resistance mechanism. Two strip-shaped sliding grooves are provided and are correspondingly opened on the support base. The sliding frame is slidably connected to the strip-shaped sliding groove. The sliding frame is connected to the movable mold through the linkage docking mechanism in a matching manner. The elastic resistance mechanism is connected to the support base and is matched with the sliding frame.

[0013] As a further solution of the present invention: The linkage docking mechanism includes a pressing roller, a seesaw, a shaft frame and a docking column. The pressing roller is fixedly connected to the bottom of the push-pull plate. The shaft frame is fixedly connected to the support base. A guide sleeve is fixedly connected to the sliding frame. The docking column passes through the guide sleeve, and a second limiting spring is connected between the docking column and the guide sleeve. A clamping cylinder matched with the docking column is fixedly connected to the bottom of the movable mold. The seesaw is rotatably connected to the shaft frame through a rotating shaft, and one end of the seesaw is matched with the pressing roller, and the other end is matched with the docking column.

[0014] As a further solution of the present invention: Two sets of elastic hindrance mechanisms are provided, which are respectively distributed corresponding to the strip-shaped sliding grooves. The elastic hindrance mechanism includes a cross-shaped rotating rod, a buffer spring and a connecting cross bar. The connecting cross bar is arranged parallel to one side of the strip-shaped sliding groove, and the connecting cross bar is fixedly connected to the support base. One end of the cross-shaped rotating rod is between the strip-shaped sliding groove and the connecting cross bar, and the other end is cross-distributed with the strip-shaped sliding groove. And the end of the cross-shaped rotating rod between the strip-shaped sliding groove and the connecting cross bar is rotatably connected to the support base through a rotating shaft, and the other end is cooperatively connected to the connecting cross bar through a buffer spring.

[0015] As a further solution of the present invention: An anti-slip rubber pad is provided on the side of the cross-shaped rotating rod close to the sliding frame.

[0016] As a further solution of the present invention: A pulley is provided at the bottom of the docking column.

[0017] As a further solution of the present invention: The reciprocating telescopic mechanism includes a main hydraulic telescopic rod and a cross frame. The main hydraulic telescopic rod is fixedly connected to one side of the support base. The cross frame is fixedly connected to the telescopic end of the main hydraulic telescopic rod, and the cross frame is fixedly connected to the push-pull plate.

[0018] As a further solution of the present invention: The injection mechanism includes a secondary hydraulic telescopic rod, an injection cylinder and a material cylinder. The injection cylinder is fixedly connected to one side of the movable mold. The secondary hydraulic telescopic rod is fixedly connected to one side of the limiting plate, and a injection head is fixedly connected to the telescopic end of the secondary hydraulic telescopic rod. The injection head is slidably matched in the injection cylinder. The material cylinder is fixedly connected to one end of the injection cylinder.

[0019] The beneficial effects of the present invention:

[0020] 1. When the movable mold and the fixed mold for die-casting the aluminum shell of the high-strength battery pack in the present invention are stuck during the mold opening process, the set push-pull plate is separated from the movable mold during the mold opening process. The push-pull plate compresses the first limiting spring, and the first limiting spring generates a resilience force to act on the movable mold, so that it receives a force away from the fixed mold. At the same time, the vibrator is started to vibrate the stuck movable mold and fixed mold to assist in mold opening, avoiding the difficulty of mold opening by manual adjustment alone and the potential safety hazards.

[0021] 2. When the push-pull plate and the movable mold of the present invention undergo relative separation movement, the push-pull plate undergoes relative lateral movement along the connecting pipe. During this process, the push-pull plate passes by the one-way stoppers distributed on the connecting pipe one by one. Whenever it passes by a one-way stopper, the one-way stopper will reset and block in the reset direction of the push-pull plate. Thus, when the movable mold suddenly opens during the process that the push-pull plate continuously compresses the first limit spring to generate a resilience force to act on the movable mold, due to the limiting effect of the one-way stopper, no matter how large the displacement of the push-pull plate is, the movable mold can only undergo a small displacement to open the mold, thereby avoiding the sudden rebound of the movable mold under the resilience force of the first limit spring to cause a large displacement and impact force, resulting in danger and equipment damage.

[0022] 3. After the stuck movable mold of the present invention is repaired, the electric telescopic rod can be used to drive the linkage frame to move, so that the through rod can be driven by the linkage frame to descend relative to the connecting pipe. In this way, the distributed one-way stoppers can be driven by the through rod to be retracted into the connecting pipe, which is convenient for unlocking the relative positions of the push-pull plate and the movable mold and facilitating the movement reset.

[0023] 4. When the movable mold and the fixed mold of the present invention are closed, the docking column is aligned with the clamping cylinder at the bottom of the movable mold. When the push-pull plate is separated from the movable mold due to the movable mold being stuck, the push-pull plate drives the extrusion roller to move along the rocker from one end to the other end. During this process, the rocker will deflect due to the extrusion effect, thereby pushing up the docking column to be stuck into the clamping cylinder. After the relative positions of the push-pull plate and the movable mold are unlocked, the movable mold will transfer the cooperation relationship of the clamping cylinder and the docking column to drive the sliding frame to slide along the strip-shaped chute. During this process, the sliding frame will squeeze the cross-shaped rotating rod crossed on the strip-shaped chute, and the cross-shaped rotating rod compresses the buffer spring. Under the resilience force of the buffer spring, a certain degree of hindrance is generated to the sliding of the sliding frame. In this way, it can be avoided that the movable mold directly moves too fast under the resilience force of the first limit spring during the reset process to cause a distance impact, and ensure the slow and safe reset of the movable mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the drawings.

[0025] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 is a schematic diagram of the relative position distribution of the extrusion roller, rocker and docking column when the movable mold and the fixed mold of the present invention are in a normal separation state;

[0027] Figure 3 is a schematic diagram of the connection structure of the limit plate, connecting pipe and movable mold of the present invention;

[0028] Figure 4 is a schematic diagram of the mating connection structure of the injection cylinder and the material cylinder of the present invention;

[0029] Figure 5 It is a schematic structural diagram of the cooperation and connection between the rod passing through and the one-way stop block in the present invention;

[0030] Figure 6 It is a schematic structural diagram of the relative position distribution of the carriage and the cross-rotating rod in the present invention;

[0031] Figure 7 It is a schematic structural diagram of the movable mold and the fixed mold in the closed mold state in the present invention;

[0032] Figure 8 It is a schematic diagram of the movement position of the push-pull plate after the movable mold and the fixed mold are stuck in the present invention.

[0033] In the figure: 1, support base; 2, movable mold; 3, fixed mold; 4, vibrator; 5, barrel; 6, injection barrel; 7, secondary hydraulic telescopic rod; 8, push-pull plate; 9, limit plate; 10, connecting pipe; 11, first limit spring; 12, extrusion roller; 13, docking column; 14, carriage; 15, cross frame; 16, main hydraulic telescopic rod; 17, seesaw; 18, shaft frame; 19, guide sleeve; 20, second limit spring; 21, cartridge; 22, electric telescopic rod; 23, linkage frame; 24, strip-shaped through hole; 25, rod passing through; 26, through hole; 27, one-way stop block; 28, strip-shaped chute; 29, connecting cross bar; 30, cross-rotating rod; 31, buffer spring. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] As Figures 1 - 8 shown, a die-casting device for the aluminum shell of a high-strength new energy vehicle battery pack includes a support base 1, a fixed mold 3 and a movable mold 2 fixedly installed on one side of the support base 1 through a bracket. The fixed mold 3 and the movable mold 2 cooperate with each other to form a complete die for die-casting the aluminum shell of the battery pack. The fixed mold 3 and the movable mold 2 are horizontally distributed. The movable mold 2 is provided with an injection mechanism for injecting aluminum liquid. After the fixed mold 3 and the movable mold 2 are butted together, aluminum solution is injected into the cavity formed after the movable mold 2 and the fixed mold 3 are closed by the injection mechanism under high pressure, and then cooled and formed to obtain the aluminum shell of the battery pack. The die-cast aluminum shell has a high tensile strength and can meet the requirements of the battery shell for strength and impact resistance.

[0036] The die-casting equipment further includes a mold-opening auxiliary mechanism and a buffer mechanism; the mold-opening auxiliary mechanism includes a reciprocating telescopic mechanism and a push-pull plate 8 for pushing and pulling the movable mold 2, the push-pull plate 8 is connected to the driving end of the reciprocating telescopic mechanism in a matching manner, a limiting plate 9 is fixedly arranged on one side of the movable mold 2, the push-pull plate 8 is located between the limiting plate 9 and the movable mold 2, a first limiting spring 11 is arranged between the limiting plate 9 and the push-pull plate 8, the first limiting spring 11 can be compressed and deformed, and a pressure sensing switch is connected between the first limiting spring 11 and the limiting plate 9 in a matching manner. Vibrators 4 electrically connected to the pressure sensing switch are distributed on both sides of the fixed mold 3, the vibrators 4 are fixedly connected to the support base 1 through brackets, and the vibrating ends of the vibrators 4 are attached to the outer wall of the fixed mold 3;

[0037] In the case of normal mold opening and closing, the reciprocating telescopic mechanism drives the movable mold 2 to reciprocate through the combination of the push-pull plate 8, the first limiting spring 11 and the limiting plate 9 to realize mold opening or closing. If the movable mold 2 and the fixed mold 3 are stuck due to wear, deformation or internal pressure after closing, when the reciprocating telescopic mechanism contracts and pulls the push-pull plate 8, relative movement will occur between the push-pull plate 8 and the movable mold 2, and the two will separate from each other. Since the limiting plate 9 is fixedly arranged with the movable mold 2, the push-pull plate 8 will approach the limiting plate 9 and gradually compress the first limiting spring 11. At this time, the first limiting spring 11 will exert a squeezing effect on the pressure sensing switch. When the pressure sensing switch detects that the pressure value exceeds the set value, it will feedback a signal to the controller, and the controller will control the vibrators 4 to start, so as to conveniently generate a vibrating effect on the combined movable mold 2 and fixed mold 3. At the same time, the resilience generated when the first limiting spring 11 is compressed will act on the limiting plate 9, and the acting direction is the same as the direction in which the movable mold 2 separates from the fixed mold 3. Under the vibrating effect of the vibrators 4, the resilience of the first limiting spring 11 conveniently assists the movable mold 2 and the fixed mold 3 to open the mold.

[0038] It should be noted that the vibrators 4 distributed on both sides of the fixed mold 3 can operate alternately to vibrate the fixed mold 3, which is convenient to generate vibrating effects from different directions alternately, so as to facilitate the separation of the movable mold 2 and the fixed mold 3.

[0039] The buffer mechanism is arranged between the movable mold 2 and the support base 1 in a matching manner, and the buffer mechanism is used to buffer the impact force when the movable mold 2 separates from the fixed mold 3 under the action of the resilience of the first limiting spring 11.

[0040] In some specific implementation schemes, in combination with Figure 1 、 Figure 3 and Figure 5As shown, the mold opening auxiliary mechanism further includes an anti-collision limit mechanism. The anti-collision limit mechanism includes a connecting pipe 10, a through rod 25, and a one-way stopper 27. The connecting pipe 10 is horizontally and fixedly connected between the limit plate 9 and the movable mold 2, and the connecting pipe 10 penetrates through the push-pull plate 8. There are two connecting pipes 10, and the push-pull plate 8 can slide relative to the connecting pipe 10. The connecting pipe 10 is a hollow body. The through rod 25 is horizontally inserted inside the connecting pipe 10. There are multiple one-way stoppers 27, which are horizontally and equidistantly distributed on the through rod 25. Each one-way stopper 27 is movably connected to the through rod 25 through a resilient hinge. Horizontally and equidistantly arranged on the connecting pipe 10 are multiple through holes 26. The one-way stopper 27 correspondingly passes through the through hole 26, and the one-way stopper 27 is on the side of the through hole 26 close to the movable mold 2. In this way, the one-way stopper 27 can only deflect away from the movable mold 2 from the original position and cannot deflect towards the movable mold 2 from the original position. Moreover, the length of the one-way stopper 27 is less than the length of the through hole 26, which facilitates the deflection and embedding of the one-way stopper 27 inside the through hole 26.

[0041] When the push-pull plate 8 moves away from the fixed mold 3 under the drive of the reciprocating telescopic mechanism, if the movable mold 2 gets stuck on the fixed mold 3 and cannot be separated, relative separation occurs between the push-pull plate 8 and the movable mold 2. At this time, the push-pull plate 8 slides horizontally along the connecting pipe 10 and compresses the first limit spring 11. And during this process, the push-pull plate 8 successively passes by the one-way stoppers 27 distributed on the connecting pipe 10. Each time it passes by a one-way stopper 27, it squeezes the one-way stopper 27 at the current position to deflect and embed it into the through hole 26. And when the push-pull plate 8 has passed, the corresponding one-way stopper 27 rotates back to its original position and blocks in the direction of the push-pull plate 8's reset. In this way, when the movable mold 2 and the fixed mold 3 suddenly separate during the auxiliary mold opening process, the movable mold 2, together with the connecting pipe 10 and the limit plate 9, moves away from the fixed mold 3 under the resilience of the first limit spring 11. And at this time, due to the existence of the one-way stopper 27, it can prevent the push-pull plate 8 from sliding relatively and resetting along the connecting pipe 10 to generate a large displacement, avoiding the movable mold 2 hitting the push-pull plate 8 to generate a large impact force, resulting in danger and damage. That is, due to the existence of the one-way stopper 27, it can prevent the movable mold 2 from having a large displacement and impact when separating from the fixed mold 3, only having a small displacement, and this small displacement is the distance between two adjacent one-way stoppers 27.

[0042] In some other specific embodiments, in order to facilitate the re - fitting and resetting of the movable mold 2 and the push - pull plate 8 after the auxiliary mold opening and fully release the elastic force of the first limiting spring 11, a strip - shaped through - opening 24 is provided at a position on the limiting plate 9 close to the connecting pipe 10. The through - rod 25 extends through the strip - shaped through - opening 24, and an electric telescopic rod 22 is fixedly connected to the outer wall of the limiting plate 9. A linkage frame 23 is connected between the telescopic end of the electric telescopic rod 22 and the through - rod 25. There is a certain distance between the through - rod 25 and the inner bottom of the connecting pipe 10, and this distance is greater than the length of the one - way stop block 27. When it is necessary to unlock and fully release the elastic force of the first limiting spring 11 to make the push - pull plate 8 and the movable mold 2 move relative to each other and fully reset, the electric telescopic rod 22 is controlled to extend. The electric telescopic rod 22 drives the through - rod 25 to descend relative to the connecting pipe 10 through the linkage frame 23. The through - rod 25 drives the connected one - way stop block 27 to descend and be received inside the connecting pipe 10, realizing the unlocking of the relative position limitation between the push - pull plate 8 and the movable mold 2. After unlocking, although the movable mold 2 will perform a rapid reset movement under the action of the resilience of the first limiting spring 11, it can be buffered by the buffer mechanism to prevent violent impact during unlocking.

[0043] In some specific embodiments, as Figure 6 shown, the buffer mechanism includes a linkage docking mechanism, a sliding frame 14, strip - shaped sliding grooves 28, and an elastic resistance mechanism. There are two strip - shaped sliding grooves 28, which are arranged in pairs and opened on the support base 1. The sliding frame 14 is slidably connected to the strip - shaped sliding grooves 28, and the sliding frame 14 is a U - shaped structure body, which is convenient for sliding connection with both strip - shaped sliding grooves 28. The sliding frame 14 is connected to the movable mold 2 through the cooperation of the linkage docking mechanism. The elastic resistance mechanism is connected to the support base 1 and cooperates with the sliding frame 14.

[0044] Among them, the linkage docking mechanism includes a pressing roller 12, a rocker 17, a shaft frame 18, and a docking column 13. The pressing roller 12 is fixedly connected to the bottom of the push - pull plate 8. The shaft frame 18 is fixedly connected to the support base 1. A guide sleeve 19 is fixedly connected to the sliding frame 14. The docking column 13 passes through the guide sleeve 19, and a stretchable second limiting spring 20 is connected between the docking column 13 and the guide sleeve 19. A clamping cylinder 21 that cooperates with the docking column 13 is fixedly connected to the bottom of the movable mold 2. The rocker 17 is rotatably connected to the shaft frame 18 through a rotating shaft, and one end of the rocker 17 cooperates with the pressing roller 12, and the other end cooperates with the docking column 13. When the movable mold 2 and the fixed mold 3 are in a normal separated state, as Figure 2As shown, the extrusion roller 12 abuts against one end of the seesaw 17, and the other end of the seesaw 17 abuts against the bottom of the docking column 13, and at this time the docking column 13 is in a raised state, and the second limit spring 20 is in a stretched state, that is, the docking column 13 has a downward force on the seesaw 17 under the action of the second limit spring 20, and the seesaw 17 is in a horizontal position as a whole. When the mold is closed, the extrusion roller 12 moves with the push-pull plate 8, thereby rolling along the seesaw 17 and moving from one end to the other end. At this time, after the extrusion roller 12 moves from one end of the seesaw 17 to the other end, since there is no extrusion force on one end of the seesaw 17, the other end is subjected to the downward force of the docking column 13, so the seesaw 17 is deflected, and the docking column 13 drops. For details, refer to Figure 7 As shown, at this time, the cartridge 21 just moves with the movable mold 2 to be aligned above the docking column 13. At this time, if the movable mold 2 and the fixed mold 3 are stuck and cannot be separated, and the push-pull plate 8 is reset away from the fixed mold 3, the extrusion roller 12 is driven to reset synchronously. At this time, the extrusion roller 12 moves along the seesaw 17, squeezing the raised end of the seesaw 17 downward, thereby causing the end of the seesaw 17 close to the docking column 13 to rotate upward, thereby pushing the docking column 13 to slide and rise. At this time, since the movable mold 2 is stuck and cannot move, the connected cartridge 21 is still above the docking column 13, so the docking column 13 will be inserted into the cartridge 21.

[0045] In some specific embodiments, two sets of elastic hindrance mechanisms are provided, which are correspondingly distributed with the strip-shaped sliding grooves 28 respectively. The elastic hindrance mechanism includes a cross-shaped rotating rod 30, a buffer spring 31 and a connecting cross bar 29. The connecting cross bar 29 is arranged parallel to one side of the strip-shaped sliding groove 28, and the connecting cross bar 29 is fixedly connected to the support base 1. One end of the cross-shaped rotating rod 30 is between the strip-shaped sliding groove 28 and the connecting cross bar 29, and the other end is cross-distributed with the strip-shaped sliding groove 28. And the end of the cross-shaped rotating rod 30 between the strip-shaped sliding groove 28 and the connecting cross bar 29 is rotationally connected to the support base 1 through a rotating shaft, and the other end is cooperatively connected to the connecting cross bar 29 through the buffer spring 31. One end of the buffer spring 31 is fixedly connected to the connecting cross bar 29, and the other end abuts against the cross-shaped rotating rod 30. After the stuck movable mold 2 is opened under the resilience of the first limiting spring 11 and the vibration of the vibrator 4, the staff can perform relevant maintenance or obstacle removal on the movable mold 2. After the treatment, since the movable mold 2 and the push-pull plate 8 need to be reset and fit together again, the limit between the two is unlocked. At the moment of unlocking, the movable mold 2 starts to approach the push-pull plate 8 under the resilience of the first limiting spring 11. At this time, the movable mold 2 drives the carriage 14 to slide along the strip-shaped sliding groove 28 through the cooperation of the clamping cylinder 21 and the docking column 13. It should be noted that the specification of the buffer spring 31 is smaller than that of the first limiting spring 11, but the two are relatively close. When the first limiting spring 11 drives the movable mold 2 and the carriage 14 to slide along the strip-shaped sliding groove 28, the carriage 14 begins to squeeze and push open the cross-shaped rotating rod 30 crossing the strip-shaped sliding groove 28, and the cross-shaped rotating rod 30 deflects, and squeezes the buffer spring 31 between it and the connecting cross bar 29. The buffer spring 31 generates a resilience force, so that the cross-shaped rotating rod 30 presses tightly against the carriage 14, increasing the friction force between the two. In this way, it is convenient to simplify the movement speed of the carriage 14, thereby slowing down the movement speed of the movable mold 2, realizing the buffering of the movable mold 2, and facilitating its slow and safe reset and fitting to the push-pull plate 8.

[0046] It should be noted that an anti-slip rubber pad is attached to the side of the cross-shaped rotating rod 30 close to the carriage 14.

[0047] In some specific embodiments, since the bottom of the docking column 13 abuts against the rocker 17 during the sliding of the carriage 14 along the strip-shaped sliding groove 28, in order to facilitate the movement of the docking column 13 together with the carriage 14, pulleys can be provided at the bottom of the docking column 13.

[0048] In some specific embodiments, the reciprocating telescopic mechanism includes a main hydraulic telescopic rod 16 and a cross frame 15. The main hydraulic telescopic rod 16 is fixedly connected to one side of the support base 1, and the cross frame 15 is fixedly connected to the telescopic end of the main hydraulic telescopic rod 16, and the cross frame 15 penetrates through the limiting plate 9 and is then fixedly connected to the push-pull plate 8.

[0049] In some specific embodiments, such as Figure 4As shown in the figure, the injection mechanism includes a secondary hydraulic telescopic rod 7, an injection cylinder 6 and a barrel 5. The injection cylinder 6 is fixedly connected to one side of the movable mold 2, and there is a communicating injection channel between the injection cylinder 6 and the cavity of the movable mold 2. The secondary hydraulic telescopic rod 7 is fixedly connected to one side of the limit plate 9 through a bracket, and the telescopic end of the secondary hydraulic telescopic rod 7 is fixedly connected with an injection head. The injection head is slidably fitted in the injection cylinder 6. The barrel 5 is fixedly connected to one end of the injection cylinder 6 and the two are interconnected. The barrel 5 is funnel-shaped. After the movable mold 2 and the fixed mold 3 are closed, the aluminum solution is introduced into the injection cylinder 6 through the barrel 5, and then the injection head is driven by the secondary hydraulic telescopic rod 7 to impact along the injection cylinder 6 in the direction of the movable mold 2, so as to impact the aluminum solution into the mold interior under a certain pressure, facilitating the die-casting process.

[0050] To facilitate the understanding of this solution embodiment by those skilled in the art, the working principle of this solution will be briefly described below in combination with a specific application scenario:

[0051] First, the main hydraulic telescopic rod 16 is driven to move the push-pull plate 8 horizontally. Relying on the push-pull plate 8, the movable mold 2 is pushed horizontally to be butted against the fixed mold 3 to achieve mold closing. Then, the aluminum solution is introduced into the injection cylinder 6 through the barrel 5. Then, the injection head is driven by the secondary hydraulic telescopic rod 7 to impact along the injection cylinder 6 in the direction of the movable mold 2, so as to impact the aluminum solution into the mold interior under a certain pressure. After die-casting is completed, the main hydraulic telescopic rod 16 is controlled to contract, driving the push-pull plate 8 to reset. The push-pull plate 8 then drives the movable mold 2 to disengage from the fixed mold 3 through the combined action of the first limit spring 11 and the limit plate 9 to achieve mold opening. Then, the die-cast high-strength aluminum battery pack is ejected through the ejection mechanism arranged on the fixed mold 3.

[0052] If the movable mold 2 and the fixed mold 3 are stuck due to wear, deformation or internal pressure after mold closing during long-term use, when the main hydraulic telescopic rod 16 contracts to pull the push-pull plate 8, relative movement will occur between the push-pull plate 8 and the movable mold 2, and the two will separate from each other. Since the limit plate 9 is fixedly arranged with the movable mold 2, the push-pull plate 8 will approach the limit plate 9 and gradually compress the first limit spring 11. At this time, the first limit spring 11 will exert a squeezing effect on the pressure sensing switch. When the pressure sensing switch detects that the pressure value exceeds the set value, it will feedback a signal to the controller, and the controller will control the vibrator 4 to start, facilitating the vibration of the combined movable mold 2 and fixed mold 3. At the same time, the resilience generated when the first limit spring 11 is compressed will act on the limit plate 9, and the acting direction is the same as the direction in which the movable mold 2 disengages from the fixed mold 3. Under the vibration of the vibrator 4, the resilience of the first limit spring 11 facilitates the mold opening of the movable mold 2 and the fixed mold 3.

[0053] When the push-pull plate 8 and the movable mold 2 are separated from each other, the push-pull plate 8 slides relatively along the connecting tube 10, and in this process, the push-pull plate 8 passes through the one-way blocks 27 distributed on the connecting tube 10 one by one. Each time it passes through a one-way block 27, the one-way block 27 at the current position is squeezed and deflected to embed into the perforation 26. After the push-pull plate 8 passes, the corresponding one-way block 27 rotates and resets to block the reset direction of the push-pull plate 8. In this way, when the movable mold 2 and the fixed mold 3 are suddenly separated during the auxiliary mold opening process, the movable mold 2 is moved together with the fixed mold 3. The connecting tube 10 and the limit plate 9 move in the direction away from the fixed mold 3 under the action of the rebound force of the first limit spring 11. At this time, due to the existence of the one-way block 27, the push-pull plate 8 can be prevented from sliding relative to the connecting tube 10 to produce a large displacement, causing the movable mold 2 to collide with the push-pull plate 8 to produce a large impact force, resulting in danger and damage. That is, due to the existence of the one-way block 27, the movable mold 2 can be prevented from having a large displacement and impact when separating from the fixed mold 3, and only a small displacement occurs, and the small displacement is the distance between two adjacent one-way blocks 27.

[0054] It should be noted that, during the mold closing process, the extrusion roller 12 moves with the push-pull plate 8, thereby rolling along the seesaw 17 and moving from one end to the other end. At this time, after the extrusion roller 12 moves from one end of the seesaw 17 to the other end, since there is no extrusion force at one end of the seesaw 17, the other end is subjected to the downward force of the docking column 13, so the seesaw 17 is deflected and the docking column 13 is lowered. For details, refer to Figure 7 As shown, at this time, the cartridge 21 just moves with the movable mold 2 to be aligned above the docking column 13. At this time, if the movable mold 2 and the fixed mold 3 are stuck and cannot be separated, and the push-pull plate 8 is reset away from the fixed mold 3, the extrusion roller 12 is driven to reset synchronously. At this time, the extrusion roller 12 moves along the seesaw 17, squeezing the raised end of the seesaw 17 downward, thereby causing the end of the seesaw 17 close to the docking column 13 to rotate upward, thereby pushing the docking column 13 to slide and rise. At this time, since the movable mold 2 is stuck and cannot move, the connected cartridge 21 is still above the docking column 13, so the docking column 13 will be inserted into the cartridge 21.

[0055] After the stuck movable mold 2 is opened under the resilience of the first limiting spring 11 and the vibration of the vibrator 4, the staff can perform relevant maintenance or troubleshooting on the movable mold 2. After the treatment, since the movable mold 2 and the push-pull plate 8 need to be reset and fit together again, the electric telescopic rod 22 is controlled to extend. The electric telescopic rod 22 drives the through rod 25 to descend relative to the connecting pipe 10 through the linkage frame 23. The through rod 25 drives the connected one-way stopper 27 to descend and retract into the connecting pipe 10, realizing the unlocking of the relative position limitation of the push-pull plate 8 and the movable mold 2. After unlocking, the movable mold 2 is reset close to the push-pull plate 8 under the resilience of the first limiting spring 11. At this time, the movable mold 2 drives the sliding frame 14 to slide along the strip-shaped chute 28 through the cooperation of the clamping cylinder 21 and the docking column 13. When the first limiting spring 11 drives the movable mold 2 and the sliding frame 14 to slide along the strip-shaped chute 28, the sliding frame 14 begins to squeeze and push open the cross-shaped rotating rod 30 crossing on the strip-shaped chute 28. The cross-shaped rotating rod 30 deflects and squeezes the buffer spring 31 between it and the connecting cross bar 29. The buffer spring 31 generates a resilience force, making the cross-shaped rotating rod 30 press tightly against the sliding frame 14 and increasing the friction force between the two. In this way, it is convenient to simplify the movement speed of the sliding frame 14, thereby slowing down the movement speed of the movable mold 2, realizing the buffering of the movable mold 2, and facilitating its slow and safe reset to fit onto the push-pull plate 8.

[0056] The above has described several embodiments of the present invention in detail, but the embodiments of the present invention are not limited thereto and cannot be considered as used to limit the scope of implementation of the present invention. All equal changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. An aluminum die-casting device for a high-strength new energy vehicle battery pack, comprising a support base (1), a fixed mold (3) and a movable mold (2), wherein the movable mold (2) is provided with an injection mechanism for injecting aluminum liquid, and is characterized in that, Further included are: A mold opening assisting mechanism, which includes a reciprocating telescopic mechanism and a push-pull plate (8) for pushing the movable mold (2). The push-pull plate (8) is cooperatively connected to the driving end of the reciprocating telescopic mechanism. A limiting plate (9) is fixedly arranged on one side of the movable mold (2). The push-pull plate (8) is located between the limiting plate (9) and the movable mold (2). A first limiting spring (11) is arranged between the limiting plate (9) and the push-pull plate (8), and a pressure sensing switch is cooperatively connected between the first limiting spring (11) and the limiting plate (9). Vibrators (4) electrically connected to the pressure sensing switch are distributed on both sides of the fixed mold (3). A buffer mechanism, which is cooperatively arranged between the movable mold (2) and the support base (1).

2. The die-casting equipment for the aluminum shell of a high-strength new energy vehicle battery pack according to claim 1, wherein The mold opening assisting mechanism further includes an anti-collision limiting mechanism, which includes a connecting pipe (10), a through rod (25) and a one-way stopper (27). The connecting pipe (10) is horizontally and fixedly connected between the limiting plate (9) and the movable mold (2), and the connecting pipe (10) penetrates through the push-pull plate (8). The connecting pipe (10) is a hollow body. The through rod (25) is horizontally arranged inside the connecting pipe (10). A plurality of one-way stoppers (27) are provided and are horizontally and equidistantly distributed on the through rod (25). Each one-way stopper (27) is movably connected to the through rod (25) through a return hinge. A plurality of through holes (26) are horizontally and equidistantly opened on the connecting pipe (10). The one-way stoppers (27) correspondingly pass through the through holes (26), and the one-way stoppers (27) are located on the side of the through holes (26) close to the movable mold (2).

3. The die-casting equipment for the aluminum shell of a high-strength new energy vehicle battery pack according to claim 2, wherein, A strip-shaped through opening (24) is opened at the position of the limiting plate (9) close to the connecting pipe (10). The through rod (25) extends through the strip-shaped through opening (24), and an electric telescopic rod (22) is fixedly connected to the outer wall of the limiting plate (9). A linkage frame (23) is connected between the telescopic end of the electric telescopic rod (22) and the through rod (25).

4. A die-casting device for an aluminum shell of a high-strength new energy vehicle battery pack according to claim 1, characterized in that, The buffer mechanism includes a linkage docking mechanism, a sliding frame (14), a strip-shaped sliding groove (28) and an elastic resistance mechanism. Two strip-shaped sliding grooves (28) are provided and are correspondingly opened on the support base (1). The sliding frame (14) is slidably connected to the strip-shaped sliding groove (28). The sliding frame (14) is cooperatively connected to the movable mold (2) through the linkage docking mechanism. The elastic resistance mechanism is connected to the support base (1) and is cooperatively connected to the sliding frame (14).

5. A die-casting device for an aluminum shell of a high-strength new energy vehicle battery pack according to claim 4, characterized in that, The linkage docking mechanism includes a pressing roller (12), a seesaw (17), a shaft frame (18) and a docking column (13). The pressing roller (12) is fixedly connected to the bottom of the push-pull plate (8). The shaft frame (18) is fixedly connected to the support base (1). A guide sleeve (19) is fixedly connected to the sliding frame (14). The docking column (13) passes through the guide sleeve (19), and a second limiting spring (20) is connected between the docking column (13) and the guide sleeve (19). A clamping cylinder (21) matched with the docking column (13) is fixedly connected to the bottom of the movable mold (2). The seesaw (17) is rotatably connected to the shaft frame (18) through a rotating shaft, one end of the seesaw (17) is matched with the pressing roller (12), and the other end is matched with the docking column (13).

6. The die-casting equipment for the aluminum shell of a high-strength new energy vehicle battery pack according to claim 4, characterized in that, Two groups of the elastic hindrance mechanisms are provided and are respectively distributed corresponding to the strip-shaped sliding grooves (28). The elastic hindrance mechanism includes a cross-shaped rotating rod (30), a buffer spring (31) and a connecting cross bar (29). The connecting cross bar (29) is arranged parallel to one side of the strip-shaped sliding groove (28), and the connecting cross bar (29) is fixedly connected to the support base (1). One end of the cross-shaped rotating rod (30) is between the strip-shaped sliding groove (28) and the connecting cross bar (29), and the other end is cross-distributed with the strip-shaped sliding groove (28). And the end of the cross-shaped rotating rod (30) between the strip-shaped sliding groove (28) and the connecting cross bar (29) is rotatably connected to the support base (1), and the other end is connected to the connecting cross bar (29) through the buffer spring (31) in a matching manner.

7. An aluminum shell die-casting device for a high-strength new energy vehicle battery pack according to claim 6, characterized in that, An anti-slip rubber pad is arranged on one side of the cross-shaped rotating rod (30) close to the sliding frame (14).

8. A die-casting device for an aluminum shell of a high-strength new energy vehicle battery pack according to claim 5, characterized in that, A pulley is arranged at the bottom of the docking column (13).

9. A die-casting device for an aluminum shell of a high-strength new energy vehicle battery pack according to claim 1, characterized in that, The reciprocating telescopic mechanism includes a main hydraulic telescopic rod (16) and a cross frame (15). The main hydraulic telescopic rod (16) is fixedly connected to one side of the support base (1). The cross frame (15) is fixedly connected to the telescopic end of the main hydraulic telescopic rod (16), and the cross frame (15) is fixedly connected to the push-pull plate (8).

10. A die-casting device for an aluminum shell of a high-strength new energy vehicle battery pack according to claim 1, characterized in that, The injection mechanism includes a secondary hydraulic telescopic rod (7), an injection cylinder (6) and a material cylinder (5). The injection cylinder (6) is fixedly connected to one side of the movable mold (2). The secondary hydraulic telescopic rod (7) is fixedly connected to one side of the limiting plate (9), and a injection head is fixedly connected to the telescopic end of the secondary hydraulic telescopic rod (7). The injection head is slidably matched in the injection cylinder (6). The material cylinder (5) is fixedly connected to one end of the injection cylinder (6).

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