Battery shell mold with automatic demolding function

Abstract

The utility model belongs to the field of injection mold equipment, and particularly relates to an automatic demolding battery shell mold which comprises a mold base and an upper mold which are installed in a stacked mode, a cavity for installing an inner mold is formed in the upper mold, the inner mold is fixedly connected with a top mold plate, and an injection molding channel is formed in the inner mold in a surrounding mode. An injection molding cavity is formed between the injection molding channel and the outer edge of the inner mold, the inner mold is connected with a top mold plate through an inner mold top plate, the top mold plate is provided with a top mold through hole used for being connected with a cooling pipeline and an injection molding inlet, the inner mold is movably connected with a longitudinal supporting plate, and the movable end of the longitudinal supporting plate is connected with a lifting mechanism. The lifting mechanism is connected with the inner mold top plate through a telescopic mechanism, a cooling separation device is arranged in the longitudinal supporting plate, and a separable and communicated side face cooling pipeline is arranged in the cooling separation device. The problems that in the prior art, in the injection molding production process of a battery shell, demolding can be completed only by replacing a mold, and a demolding structure cannot complete reliable and automatic demolding are solved.

Description

Technical Field

[0001] The present application belongs to the field of injection mold equipment, and specifically relates to a battery casing mold with automatic demoulding. Background Art

[0002] Lithium battery shells are roughly divided into tubular and box shapes, and are usually made by die casting and injection molding. In the process of repeated injection molding, it is inevitable to replace the mold so that different mold surfaces have different patterns or styles. However, the disassembly and replacement process takes a lot of time. Therefore, saving the time for disassembly and replacement can improve the use efficiency of lithium battery shell molds and meet market demand.

[0003] The existing lithium battery shell mold has low efficiency in replacing molds during repeated use. For example, an injection mold disclosed in application number 201721898643.8 has low efficiency and low automation when replacing and disassembling the mold, which affects the efficiency of mold use. For square battery shells with large flat surfaces, due to the need for structural strength, several reinforcing ribs or convex structures for clamping need to be arranged on the edges. The existing demoulding mechanism uses a separate push in the opposite direction of the injection molded part to demould. In this process, the longer structures such as reinforcing ribs or clamping convex ribs have a longer fit size with the mold and are not easy to fall off, and are prone to buckling damage to thin-walled parts that have not been completely cooled.

[0004] Therefore need a kind of battery shell mould that can complete automatic and reliable demoulding. Utility Model Content

[0005] The purpose of this application is to address the shortcomings of the prior art and to design an automatic demolding battery casing mold by cooperating with a longitudinal support plate, a lifting mechanism, and a cooling and separation device, thereby solving the problems in the prior art that the mold needs to be replaced to complete demolding during the injection molding of battery casings and the demolding structure cannot complete reliable automatic demolding.

[0006] The technical solution adopted in this application is:

[0007] A battery shell mold with automatic demolding comprises a stacked mold base and an upper mold, wherein a cavity for installing an inner mold is arranged in the upper mold, a top mold plate covers the upper end of the cavity, the inner mold is fastened to the top mold plate, an injection channel is arranged around the inner mold, an injection cavity is arranged between the injection channel and the outer edge of the inner mold, the inner mold is connected to the top mold plate through an inner mold top plate, the top mold plate is provided with a top mold through hole for connecting a cooling pipe and an injection inlet, the inner mold is movably connected to a longitudinal support plate, the movable end of the longitudinal support plate is connected to a lifting mechanism, the lifting mechanism is connected to the inner mold top plate through a telescopic mechanism, a cooling separation device is arranged in the longitudinal support plate, and a detachable and connected side cooling pipe is arranged in the cooling separation device. A transverse support plate is arranged at the lower end of the longitudinal support plate, and the transverse support plate is fastened to the longitudinal support plate in an L shape. The lifting mechanism includes a telescopic rod slidably connected to the cylinder, and lifting hinges are arranged in pairs at the movable ends of the telescopic rods. The lifting hinges are rotatably connected to the lifting connecting rods, and the movable ends of the lifting connecting rods are rotatably connected to the transverse support plate.

[0008] Preferably, the longitudinal support plates are arranged in pairs and multiple groups are arranged along the edge of the inner mold top plate, the inner mold top plate is provided with a side panel hinge, the side panel hinge is rotatably connected to the longitudinal support plate, the side panel hinge sleeve is provided with a swinging worm gear, the swinging worm gear is connected to the worm screw pair, the worm shaft is connected to the motor shaft, the motor shaft is electrically connected to the controller, the longitudinal support plate is provided with a mounting buckle to be clamped with the inner mold top plate, and a circular unloading groove is provided on the inner side of the corner where the transverse support plate is connected to the longitudinal support plate, and the unloading groove is connected to the cavity between the two paired longitudinal support plates.

[0009] Preferably, the longitudinal support plate is provided with a side plate slide groove, and the cooling separation device includes an inner plate, the side plate slide groove is slidably connected to the inner plate, a heat conductive patch is provided on the side of the inner plate close to the surface of the longitudinal support plate, and a side cooling pipe is provided in the inner plate, and the side cooling pipes of adjacent inner plates are butt-connected and connected to each other, and a pipe cavity formed by the connection of the side cooling pipes is through-set in each longitudinal support plate, and the two side ports of the side cooling pipe on each section of the inner plate are respectively provided with butt-joint ring pipes and pipe butt-joint grooves, and the butt-joint ring pipes are wedge-connected with the pipe butt-joint grooves so that the side cooling pipes are connected to each other, and side cooling inlets and side cooling outlets are respectively provided at both ends of the connected side cooling pipes, the side cooling inlet is connected to the cooling water inlet, and the side cooling outlet is connected to the cooling drain outlet. The bottom cooling pipe is arranged in the transverse support plate, and the bottom cooling pipes in the adjacent transverse support plates are connected to each other. The pipe cavity formed by the connection of the bottom cooling pipes is arranged through each transverse support plate. The two ends of the bottom cooling pipe in the transverse support plate are respectively provided with a docking ring pipe and a pipe docking groove. The docking ring pipe is embedded in the pipe docking groove so that the bottom cooling pipes are connected to each other. The two ends of the connected bottom cooling pipe are respectively provided with a bottom cooling inlet and a bottom cooling outlet. The bottom cooling inlet is connected to the cooling water inlet, and the bottom cooling outlet is connected to the cooling drain. The cooling water inlet and the cooling water outlet are both connected through the corresponding pipelines on the workbench, which belongs to the basic conditions of the prior art and will not be repeated.

[0010] Preferably, the transverse support plates are arranged in pairs, wherein one transverse support plate is provided with a dislocation groove, and the other transverse support plate is provided with a butt joint end, and the butt joint end and the dislocation groove can be separated and butt jointed. The dislocation groove is an arc-shaped notch, and when the longitudinal support plate deflects around the side plate hinge, the butt joint end will not interfere with each other during the upward warping process due to the presence of the dislocation groove. When the lower surfaces of the relatively arranged transverse support plates are parallel, the butt joint end fits with the lower end surface of the dislocation groove.

[0011] Preferably, the lower end surface of the transverse support plate is provided with ventilation holes, and a number of ventilation holes are evenly arranged along the axial direction of the inner mold. A gas channel is provided in the transverse support plate, one end of the gas channel is connected to the machine tool gas supply pipeline, and the other end of the gas channel is connected to the external environment through the ventilation holes.

[0012] Preferably, a wide body cavity for injection molding the outer shell flange is provided at the upper end of the injection molding cavity, and a push rod is provided at a position corresponding to the wide body cavity on the inner mold top plate, the upper end of the push rod is connected to the linear motor shaft, and the lower end of the push rod is connected to the top mold plate through a spring.

[0013] The beneficial effects of this application are:

[0014] 1. The present application adopts a longitudinal support plate, a lifting mechanism, and a cooling and separation device that cooperate with each other to design a battery shell mold with automatic demolding, which solves the problem that the mold needs to be replaced to complete demolding during the injection molding process of the battery shell in the prior art and the demolding structure cannot complete reliable automatic demolding.

[0015] 2. In this application, the left longitudinal support plate rotates counterclockwise, and the right longitudinal support plate rotates clockwise, and the two side surfaces of the inner mold are separated from the side surfaces of the battery shell injection molded part. At the same time, the outer corner of the junction of the longitudinal support plate and the transverse support slightly presses against the bottom of the injection molded part, and the transverse support plate is separated from the bottom of the injection molded part, and the entire battery shell injection molded part is automatically separated.

[0016] 3. In the present application, adjacent longitudinal support plates are tightly fitted to form a butt joint with the side cooling ducts while forming a parallel plane on the side of the inner mold. Since the contact area between the entire battery housing and the side of the inner mold is large, the entire side cannot be detached at the same time during demolding, and the detachment of each longitudinal support plate should be misaligned. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the external structure of the battery shell mold;

[0018] Figure 2 It is a schematic diagram of the filling structure of the battery shell;

[0019] Figure 3 It is a schematic diagram of the mold end surface structure in the mold;

[0020] Figure 4 It is a schematic diagram of the bottom structure of the mold inside the mold;

[0021] Figure 5 It is a schematic diagram of the axonometric view of the mold inside the mold;

[0022] Figure 6 yes Figure 3 Middle AA section;

[0023] Figure 7 yes Figure 6 A partial enlarged view of point D in the middle;

[0024] Figure 8 yes Figure 3 Middle BB cross section;

[0025] Fig. 9 yes Figure 8 A partial enlarged view of point C in the middle;

[0026] Fig.10 1. It is a schematic diagram of the mold demoulding and separation state;

[0027] Fig.11 It is a schematic diagram of the demoulding maneuvering state;

[0028] Fig.12 yes Fig.11 A partial enlarged view of point E in the middle;

[0029] Fig.13 It is a diagram of the relationship between the battery shell and the inner mold top plate.

[0030] In the figure: 1. mold base; 2. upper mold; 3. top mold plate; 301. linear motor; 4. battery shell; 401. shell flange; 402. shell ridge; 403. ejector; 5. injection pipe opening; 6. inner mold top plate; 7. longitudinal support plate; 7A. support plate swinging state; 701. transverse support plate; 701A. bottom plate swinging state; 702. vent hole; 703. bottom cooling inlet; 8. unloading groove; 9. telescopic mounting hole; 10. side plate slide groove; 11. side plate hinge; 111. swing worm gear; 1 12. Worm; 113. Motor; 12. Inner plate; 121. Thermal pad; 13. Side cooling duct; 132. Docking ring; 133. Duct docking groove; 135. Side cooling inlet; 136. Side cooling outlet; 14. Bottom cooling duct; 141. Bottom cooling inlet; 142. Bottom cooling outlet; 15. Cylinder; 16. Telescopic rod; 17. Lifting hinge; 18. Lifting mechanism; 19. Lifting connecting rod; 20. Articulated bracket; 21. Offset groove; 22. Docking terminal; 23. Injection channel. DETAILED DESCRIPTION

[0031] like Figure 1-5 and Figure 10-13As shown, an automatic demoulding battery shell mold comprises a stacked mold base 1 and an upper mold 2, the upper mold 2 being provided with a cavity for installing an inner mold, a top mold plate 3 covering the upper end of the cavity, the inner mold being fastened to the top mold plate 3, the inner mold being surrounded by an injection channel 23, an injection cavity being provided between the injection channel 23 and the outer edge of the inner mold, the inner mold being connected to the top mold plate 3 via an inner mold top plate 6, the top mold plate 3 being provided with a top mold through hole for connecting a cooling pipe and an injection inlet, the inner mold being movably connected to a longitudinal support plate 7, the movable end of the longitudinal support plate 7 being connected to a lifting mechanism 18, the lifting mechanism 18 being connected to the inner mold top plate 6 via a telescopic mechanism, a cooling separation device being provided in the longitudinal support plate 7, and a detachable and connected side cooling pipe 13 being provided in the cooling separation device. A transverse support plate 701 is provided at the lower end of the longitudinal support plate 7, and the transverse support plate 701 is fastened to the longitudinal support plate 7 in an L-shape. The lifting mechanism 18 includes a telescopic rod 16 slidably connected to the cylinder 15, and the cylinder 15 is arranged in the telescopic mounting hole 9 provided in the inner mold top plate 6. The movable ends of the telescopic rod 16 are provided with lifting hinges 17 in pairs, and the lifting hinges 17 are rotatably connected to the lifting connecting rod 19, and the movable ends of the lifting connecting rod 19 are rotatably connected to the transverse support plate 701. In order to facilitate production and installation, the transverse support plate 701 is provided with an articulated bracket 20 with a middle vacancy, and the lifting connecting rod 19 is hinged from both sides. The necessary injection pipe openings 5 ​​and cooling water inlets and outlets or valves should be provided and installed on the upper mold 2 and the top mold plate 3.

[0032] Its implementation method is: Fig.13 It can be seen that for a thin-walled battery casing 4, if there is a relatively long casing ridge 402, the fitting length between the injection molded part and the mold itself is relatively large, so the ejection force cannot be loaded along the axis direction of the casing ridge 402, and the ejection movement needs to be performed at a certain angle along the axis of the casing ridge 402.

[0033] When the injection molding is completed and the demoulding operation is required, the top mold plate 3 is separated from the upper mold 2 under the action of the external lifting equipment and takes out the inner mold and the battery shell 4. Due to the cooling contraction and negative pressure airflow, the battery shell 4 is sleeved on the inner mold and lifted out together. The cylinder 15 controls the telescopic rod 16 to contract, and the lifting mechanism 18 will move upward. Driven by the connecting rod mechanism formed by the telescopic rod 16, the lifting connecting rod 19, the horizontal support plate 701, and the longitudinal support plate 7 in sequence, Fig.10 The left longitudinal support plate 7 rotates counterclockwise, and the right longitudinal support plate 7 rotates clockwise, and the two side surfaces of the inner mold are separated from the side surfaces of the injection molded part of the battery housing 4. At the same time, the outer corner of the junction of the longitudinal support plate 7 and the transverse support plate 701 slightly presses against the bottom of the injection molded part, and the transverse support plate 701 is separated from the bottom of the injection molded part, and the entire battery housing 4 injection molded part is automatically separated.

[0034] When the structure of the battery housing 4 changes, for example, only one side is provided with a housing ridge 402, the swing worm 113 is driven by the motor 113 to rotate, and the longitudinal support plate 7 is deflected through the worm gear 113 structure to achieve the detachment operation of the single-sided battery housing 4.

[0035] The principle of setting the unloading groove 8 at the junction of the transverse support plate 701 and the longitudinal support plate 7 is that when the lifting link 19 is parallel to the axial direction of the longitudinal support plate 7, the pressure angle of the connecting rod mechanism formed by the lifting link 19, the transverse support plate 701, the longitudinal support plate 7, and the side plate hinge 11 are connected in sequence to form a right angle, and the mechanism will be stuck and unable to move. Due to the presence of the unloading groove 8, when the telescopic rod 16 is shortened, the transverse support plate 701 has a certain deflection, and the angle between the transverse support plate 701 and the longitudinal support plate 7 is no longer a right angle. The pressure angle of the aforementioned connecting rod mechanism will be reduced, which can effectively prevent the mechanism from being stuck.

[0036] like Figure 3 and Figure 6-9As shown, the longitudinal support plates 7 are arranged in pairs and multiple groups are arranged along the edge of the inner mold top plate 6. The inner mold top plate 6 is provided with a side panel hinge 11, and the side panel hinge 11 is rotatably connected to the longitudinal support plate 7. The side panel hinge 11 is sleeved with a swinging worm gear 111, and the swinging worm gear 111 is connected to the spiral pair of the worm 113, and the shaft of the worm 113 is connected to the shaft of the motor 113, and the shaft of the motor 113 is electrically connected to the controller. The longitudinal support plate 7 is provided with a mounting buckle to be connected to the inner mold top plate 6, and a circular unloading groove 8 is provided on the inner side of the corner where the transverse support plate 701 is connected to the longitudinal support plate 7, and the unloading groove 8 is connected to the cavity between the two paired longitudinal support plates 7. The longitudinal support plate 7 is provided with a side plate slide groove 10, and the cooling separation device includes an inner plate 12, and the side plate slide groove 10 is slidably connected to the inner plate 12. A heat conductive patch 121 is provided on one side of the inner plate 12 close to the surface of the longitudinal support plate 7, and a side cooling pipe 13 is provided in the inner plate 12. The side cooling pipes 13 of adjacent inner plates 12 are connected to each other, and the pipe cavity formed by the connection of the side cooling pipes 13 is through-set in each longitudinal support plate 7, and the two side ports of the side cooling pipe on each section of the inner plate 12 are respectively provided with a docking ring 132 pipe and a pipe docking groove 133, and the docking ring 132 pipe and the pipe docking groove 133 are wedge-connected so that the side cooling pipes 13 are connected to each other, and the two ends of the connected side cooling pipes are respectively provided with a side cooling inlet 135 and a side cooling outlet 136, and the side cooling inlet 135 is connected to the cooling water inlet, and the side cooling outlet 136 is connected to the cooling drain. A bottom cooling pipe 14 is arranged in the transverse support plate 701. The bottom cooling pipes 14 in adjacent transverse support plates 701 are connected to each other. The pipe cavity formed by the connection of the bottom cooling pipes 14 is arranged through each transverse support plate 701. The two ends of the bottom cooling pipe 14 in the transverse support plate 701 are respectively provided with a docking ring 132 pipe and a pipe docking groove 133. The docking ring 132 pipe is embedded in the pipe docking groove 133 so that the bottom cooling pipes 14 are connected to each other. The two ends of the connected bottom cooling pipe 14 are respectively provided with a bottom cooling inlet 141703 and a bottom cooling outlet 142.

[0037] The implementation method is as follows: adjacent longitudinal support plates 7 are tightly fitted together so that the side cooling pipes 13 are butted against each other and a parallel plane is formed on the side of the inner mold. Since the contact area between the entire battery housing 4 and the side of the inner mold is relatively large, the entire side cannot be detached at the same time during demolding, and the detachment of each longitudinal support plate 7 should be offset.

[0038] It is worth noting that in the cooling process, there should be a time difference between the injection molding process and the cooling process. During the injection molding process, the inner plate 12 slides toward the symmetric plane of the inner mold to separate the thermal conductive patch 121 from the side surface of the longitudinal support plate 7; after the injection molding process is completed, the inner plate 12 slides toward both sides of the inner mold to fit the side surface of the longitudinal support plate 7, and cooling water is passed into the side cooling pipe 13 for cooling.

[0039] The bottom cooling inlet 141703 is connected to the cooling water inlet, and the bottom cooling outlet 142 is connected to the cooling drain outlet. The cooling water inlet and the cooling water outlet are both connected through corresponding pipelines on the workbench, which is a basic condition of the prior art and will not be described in detail.

[0040] like Figure 10-13 As shown, the transverse support plates 701 are arranged in pairs, wherein one side of the transverse support plate 701 is provided with a dislocation groove 21, and the other side of the transverse support plate 701 is provided with a docking end 22, and the docking end 22 and the dislocation groove 21 can be separated and docked. The dislocation groove 21 is an arc-shaped notch. When the longitudinal support plate 7 deflects around the side plate hinge 11, the docking end 22 is warped upward due to the existence of the dislocation groove 21, and a group of transverse support plates 701 arranged oppositely will not interfere with each other. When the lower surfaces of the oppositely arranged transverse support plates 701 are parallel, the docking end 22 fits with the lower end surface of the dislocation groove 21. The lower end surface of the transverse support plate 701 is provided with a vent hole 702, and a number of vent holes 702 are evenly arranged along the axial direction of the inner mold. A gas channel is provided in the transverse support plate 701, and one end of the gas channel is docked with the machine tool gas supply pipeline, and the other end of the gas channel is connected to the external environment through the vent hole 702.

[0041] exist Fig.10 In the figure, a wide body cavity for injection molding the outer shell flange 401 is arranged at the upper end of the injection molding cavity, and a push rod 403 is arranged at the corresponding position of the wide body cavity on the inner mold top plate 6. The upper end of the push rod 403 is connected to the axis of the linear motor 301, and the lower end of the push rod 403 is connected to the top mold plate 3 through a spring.

[0042] The implementation method is as follows: when the top mold plate 3 is lifted, the vent hole 702 ejects negative pressure airflow, so that the bottom edge of the battery shell 4 and the outer edge of the entire inner mold remain in a close contact state; the vent hole 702 ejects positive pressure airflow, so that the bottom edge of the battery shell 4 and the outer edge of the entire inner mold are separated from the close contact state after cooling.

[0043] If the battery housing 4 has a special structure and needs to be unilaterally separated from the fitting state, the worm 113 is driven by the motor 113 shaft to drive the swinging worm wheel 111, driving the longitudinal support plate 7 to deflect around the side plate hinge 11. When the side plate hinge 11 deflects to the position of the first swing state 7A, the transverse support plate 701 reaches the second swing state 701A, and the docking end 22 is tilted up and enters the space of the dislocation groove 21. Fig.11 The longitudinal support plate 7 on the left side swings counterclockwise, and the longitudinal support plate 7 and the transverse support plate 701 are released from the battery housing 4 so as to be separated.

Claims

1. A battery casing mold with automatic demoulding, comprising a mold base (1) and an upper mold (2) which are stacked and installed, characterized in that: The upper mold (2) is provided with a cavity for installing the inner mold, the top mold plate (3) covers the upper end of the cavity, the inner mold is tightly connected to the top mold plate (3), the inner mold is surrounded by an injection channel (23), an injection cavity is provided between the injection channel (23) and the outer edge of the inner mold, the inner mold is connected to the top mold plate (3) through the inner mold top plate (6), the top mold plate (3) is provided with a top mold through hole for connecting a cooling pipe and an injection inlet, the inner mold is movably connected to the longitudinal support plate (7), the movable end of the longitudinal support plate (7) is connected to the lifting mechanism (18), the lifting mechanism (18) is connected to the inner mold top plate (6) through a telescopic mechanism, a cooling separation device is provided in the longitudinal support plate (7), and a detachable and connected side cooling pipe (13) is provided in the cooling separation device.

2. The automatic demoulding battery shell mold according to claim 1, characterized in that: A transverse support plate (701) is provided at the lower end of the longitudinal support plate (7), and the transverse support plate (701) is fastened to the longitudinal support plate (7) in an L-shape. The lifting mechanism (18) includes a telescopic rod (16) slidably connected to the cylinder (15), and a lifting hinge (17) is provided in pairs at the movable end of the telescopic rod (16). The lifting hinge (17) is rotatably connected to the lifting connecting rod (19), and the movable end of the lifting connecting rod (19) is rotatably connected to the transverse support plate (701).

3. The automatic demoulding battery shell mold according to claim 2, characterized in that: The longitudinal support plates (7) are arranged in pairs and are arranged in multiple groups along the edge of the inner mold top plate (6); the inner mold top plate (6) is provided with a side plate hinge (11); the side plate hinge (11) is rotatably connected to the longitudinal support plate (7); the side plate hinge (11) is sleeved with a swinging worm gear (111); the swinging worm gear (111) is connected to a spiral pair of a worm (112); the shaft of the worm (112) is connected to the shaft of a motor (113); the shaft of the motor (113) is electrically connected to a controller; the longitudinal support plates (7) are provided with mounting buckles for clamping with the inner mold top plate (6); a circular unloading groove (8) is provided on the inner side of the corner where the transverse support plate (701) is connected to the longitudinal support plate (7); the unloading groove (8) is connected to the cavity between the two longitudinal support plates (7) in a pair.

4. The automatic demoulding battery shell mold according to claim 3, characterized in that: The longitudinal support plate (7) is provided with a side plate slide groove (10), the cooling separation device comprises an inner plate (12), the side plate slide groove (10) is slidably connected to the inner plate (12), a heat conductive patch (121) is provided on a side of the inner plate (12) close to the surface of the longitudinal support plate (7), a side cooling pipe (13) is provided in the inner plate (12), the side cooling pipes (13) of adjacent inner plates (12) are connected to each other, and the pipe cavity formed by the connection of the side cooling pipes (13) is provided through each longitudinal plate In the support plate (7), the two side ports of the side cooling pipe on each section of the inner plate (12) are respectively provided with a docking ring (132) pipe and a pipe docking groove (133); the docking ring (132) pipe and the pipe docking groove (133) are wedged and connected so that the side cooling pipes (13) are interconnected; and the two ends of the connected side cooling pipes are respectively provided with a side cooling inlet (135) and a side cooling outlet (136); the side cooling inlet (135) is connected to a cooling water inlet, and the side cooling outlet (136) is connected to a cooling drain outlet.

5. The automatic demoulding battery shell mold according to claim 4, characterized in that: A bottom cooling pipe (14) is arranged in the transverse support plate (701), and the bottom cooling pipes (14) in adjacent transverse support plates (701) are connected to each other. The pipe cavity formed by the connection of the bottom cooling pipes (14) is arranged through each transverse support plate (701). The two ends of the bottom cooling pipe (14) in the transverse support plate (701) are respectively provided with a docking ring (132) pipe and a pipe docking groove (133). The docking ring (132) pipe is embedded in the pipe docking groove (133) so that the bottom cooling pipes (14) are connected to each other. The two ends of the connected bottom cooling pipe (14) are respectively provided with a bottom cooling inlet (141) (703) and a bottom cooling outlet (142). The bottom cooling inlet (141) (703) is connected to a cooling water inlet, and the bottom cooling outlet (142) is connected to a cooling drain outlet.

6. The automatic demoulding battery shell mold according to claim 2, characterized in that: The transverse support plates (701) are arranged in pairs, wherein one side of the transverse support plates (701) is provided with an offset groove (21), and the other side of the transverse support plates (701) is provided with a docking end (22), and the docking end (22) and the offset groove (21) can be detachably docked.

7. The automatic demoulding battery shell mold according to claim 2, characterized in that: The lower end surface of the transverse support plate (701) is provided with a vent hole (702), and a plurality of vent holes (702) are evenly arranged along the axial direction of the inner mold. A gas channel is provided inside the transverse support plate (701), one end of the gas channel is connected to the machine tool gas supply pipeline, and the other end of the gas channel is connected to the external environment through the vent hole (702).

8. The automatic demoulding battery shell mold according to claim 2, characterized in that: The upper end of the injection molding cavity is provided with a wide body cavity for injection molding the outer shell flange (401); the inner mold top plate (6) is provided with a push rod (403) at a position corresponding to the wide body cavity; the upper end of the push rod (403) is butted against the axis of the linear motor (301); and the lower end of the push rod (403) is connected to the top mold plate (3) via a spring.

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