Battery injection molding equipment

Abstract

The invention relates to the field of battery injection molding processing, in particular to battery injection molding equipment. The battery injection molding equipment comprises a rack, a workbench is arranged on the rack, and a mold is arranged on the workbench; the mold comprises a liftable upper mold and a lower mold capable of horizontally moving relative to the upper mold, so that the lower mold is overlapped with or staggered from the upper mold in the vertical direction; a penetrating opening is formed in the inner bottom of a mold cavity in the lower mold, and a jacking assembly capable of moving in a lifting mode and used for jacking out a formed product is arranged in the penetrating opening. And an air supply assembly linked with the lower die is arranged on the workbench. According to the battery injection molding equipment provided by the invention, the lower mold moves in the horizontal direction, so that the lower mold and the upper mold can be staggered when parts are placed in the mold and a finished product is taken out, and at the moment, the safety is higher when a worker performs manual operation.

Description

Technical Field

[0001] This invention relates to the field of battery injection molding, and more particularly to battery injection molding equipment. Background Technology

[0002] With the rapid development of global new energy vehicles and energy storage systems, increasingly stringent requirements have been placed on the energy density, safety performance, and manufacturing cost of lithium-ion batteries. Battery structural components, especially battery covers, act as the battery's "safety valve" and "sealing cap," and their performance directly determines the battery's sealing, insulation, explosion-proof safety, and lifespan. Injection molding, due to its high efficiency, high consistency, and ability to form complex structures, has become the core process for manufacturing such precision structural components.

[0003] Battery injection molding is a key precision process used in lithium battery manufacturing. It involves injecting molten engineering plastic at high temperature into a precision mold under high pressure to integrally encapsulate pre-placed inserts such as metal terminals and explosion-proof valves, forming core components like battery covers and casings. This process requires workers to manually place each component into the mold. After placement, the mold is closed by manual control, and molten plastic is injected into the cavity for later removal after molding.

[0004] However, the following defects and shortcomings still exist in the application implementation process:

[0005] The fixed mold and the moving mold are on the same vertical plane. When placing the workpiece, the workers' limbs frequently move between the fixed mold and the moving mold, which poses a significant safety hazard.

[0006] Therefore, it is necessary to provide a new battery injection molding equipment to solve the above-mentioned technical problems. Summary of the Invention

[0007] To solve the above-mentioned technical problems, the present invention provides a battery injection molding device.

[0008] The battery injection molding equipment provided by the present invention includes a frame, a worktable provided on the frame, and a mold provided on the worktable;

[0009] The mold includes a liftable upper mold and a lower mold that can move horizontally relative to the upper mold, such that the lower mold coincides with or is offset from the upper mold in the vertical direction.

[0010] The bottom of the cavity in the lower mold has a through-hole, and a lifting component that can be raised and lowered and moved to eject the molded product is provided inside the through-hole;

[0011] The worktable has an air supply component that is linked to the lower mold. The air supply component is connected to the lifting component, and air is injected into the lower mold through the lifting component.

[0012] Preferably, a groove is provided at the upper end of the worktable, and the lower mold is slidably connected inside the groove. The inner bottom of the groove is set as an inclined surface, and the depth decreases from the end closer to the upper mold to the end farther away from the upper mold.

[0013] Preferably, the lower end of the lower mold has an integrally connected first base plate, and a mating slide is symmetrically arranged at the lower end of the first base plate away from the center. A plurality of first balls are embedded in the lower end of the mating slide, and the first balls roll on the upper surface of the worktable.

[0014] A through-hole is provided on the side of the first base plate, and a horizontally arranged first light rod is fixed on the inner wall of the slide groove. The first light rod passes through the first base plate along the first slide hole and is slidably connected to it.

[0015] Preferably, the upper end of the workbench is bolted with a foot bracket, and a cylinder is bolted to the foot bracket. The output end of the cylinder is fixed to the side of the lower mold to drive the lower mold to move along the length of the slide groove.

[0016] Preferably, the inner wall of the through-hole is provided with a mating groove, and a vertically arranged second light rod is welded and fixed inside the mating groove. A spring is sleeved on the second light rod, and the upper end of the spring abuts against the top of the mating groove.

[0017] Preferably, the lifting assembly includes a second base plate, which is disposed inside the through opening and its end extends into the mating groove. A second sliding hole is provided on the second base plate, and the second light rod passes through the second base plate along the second sliding hole and is slidably connected to it, and the lower end of the spring abuts against the second base plate.

[0018] The second base plate has an integrally connected top block at its upper end. The upper end of the top block is flush with the inner bottom of the lower mold cavity and can also move vertically relative to the lower mold to allow it to enter the mold cavity.

[0019] Preferably, the lower end of the second base plate is provided with an integrally connected fixing block, and the lower end of the fixing block is embedded with a plurality of second balls, which roll in the bottom of the groove.

[0020] Preferably, the top block has a cavity inside, and an air hole is provided on its outer wall near the top. The lower end of the second base plate is also provided with a connecting air nozzle that communicates with the cavity inside the top block, and a first air guide pipe is installed on the connecting air nozzle.

[0021] Preferably, the air supply assembly includes two ring seats, each with a cavity inside. An air bladder is also provided between the two ring seats. Both ring seats are sleeved on the first guide rod. One ring seat is fixed to the inner wall of the slide groove and has an air inlet. The other ring seat is fixed to the outside of the lower mold and has an air outlet. One-way valves are installed on both the air inlet and the air outlet. A second air guide pipe is also installed at the air outlet, and the other end of the second air guide pipe is connected to the first air guide pipe.

[0022] Compared with related technologies, the battery injection molding equipment provided by the present invention has the following beneficial effects:

[0023] 1. Using a cylinder as the driving source, the lower mold can be driven to move horizontally. Therefore, when placing parts into the mold and taking out finished products, the lower mold can be misaligned with the upper mold, which will make the workers safer when performing manual operations.

[0024] 2. The bottom of the chute is inclined, and in the lifting assembly, the second ball rolls at the bottom of the chute. Therefore, when the lower mold moves away from the upper mold, the entire lifting assembly will move upward a short distance. During this process, it can lift the finished product and can be used as an ejector pin, which makes it more convenient to remove the finished workpiece later.

[0025] 3. During the movement of the lower mold, the air bladder in the air supply component is squeezed, causing the air bladder to release air. The released gas can directly enter the interior of the top block. When the top block lifts the finished workpiece, the gas is released into the mold cavity inside the lower mold, which has a certain cooling effect on the finished product and the mold itself. At the same time, it can also increase the air pressure in the gap between the product and the mold. The air pressure can also facilitate the subsequent material handling operation. Attached Figure Description

[0026] Figure 1 A schematic diagram of a preferred embodiment of the battery injection molding equipment provided by the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the upper part of the workbench shown in this invention;

[0028] Figure 3 This is a cross-sectional structural schematic diagram of the worktable shown in this invention;

[0029] Figure 4 This is a schematic diagram of the structure of the lower mold shown in this invention;

[0030] Figure 5 This is a schematic diagram of the structure of the mating slide shown in this invention;

[0031] Figure 6This is a schematic diagram of the structure of the lower mold and the lifting assembly connected in this invention;

[0032] Figure 7 This is a schematic diagram of the lifting assembly shown in the present invention. Figure 1 ;

[0033] Figure 8 This is a schematic diagram of the lifting assembly shown in the present invention. Figure 2 ;

[0034] Figure 9 This is a schematic diagram of the gas supply assembly shown in this invention.

[0035] The diagram labels are: 1. Frame; 11. Worktable; 12. Slide.

[0036] 2. Lower mold; 21. First base plate; 22. Mating slide; 23. First ball bearing; 24. Leg; 25. Cylinder; 26. First sliding hole; 27. First guide rod; 28. Through hole; 29. ​​Mating groove; 210. Second guide rod; 211. Spring;

[0037] 3. Lifting assembly; 31. Second base plate; 32. Second sliding hole; 33. Top block; 34. Air hole; 35. Connecting air nozzle; 36. First air guide pipe; 37. Fixing block; 38. Second ball bearing;

[0038] 4. Air supply assembly; 41. Ring seat; 42. Airbag; 43. Air inlet; 44. Air outlet; 45. One-way valve; 46. Second air guide pipe. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0040] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0041] Please see Figures 1 to 9 The battery injection molding equipment provided in this embodiment of the invention includes a frame 1, a worktable 11 is provided on the frame 1, and a mold is provided on the worktable 11. The mold includes a lower mold 2 and an upper mold, and also includes a lifting component 3 and an air supply component 4.

[0042] Meanwhile, a slide groove 12 is provided at the upper end of the workbench 11. The lower mold 2 is slidably connected to the inside of the slide groove 12. The inner bottom of the slide groove 12 is set as an inclined surface, and the depth decreases from the end closer to the upper mold to the end farther away from the upper mold.

[0043] It should be noted that the device uses the lower mold 2 and the upper mold as the main processing equipment. The upper mold can move vertically to cooperate with the lower mold 2 for mold closing. At the same time, the upper mold has an injection structure, which can inject molten plastic into the mold cavity, and after cooling, it can be formed.

[0044] For lower mold 2;

[0045] Please see Figure 4 , Figure 5 and Figure 6 The lower end of the lower mold 2 has an integrally connected first base plate 21. The lower end of the first base plate 21 and the position away from the center are symmetrically provided with a mating slide 22. The lower end of the mating slide 22 is embedded with a plurality of first balls 23. The first balls 23 roll on the upper surface of the worktable 11.

[0046] A first sliding hole 26 is provided through the side of the first base plate 21, and a first light rod 27 is fixed horizontally on the inner wall of the sliding groove 12. The first light rod 27 passes through the first base plate 21 along the first sliding hole 26 and is slidably connected to it.

[0047] The upper end of the workbench 11 is bolted with a leg 24, and a cylinder 25 is bolted on the leg 24. The output end of the cylinder 25 is fixed to the side of the lower mold 2 to drive the lower mold 2 to move along the length of the slide 12.

[0048] The inner wall of the through-hole 28 is also provided with a mating groove 29. A vertically arranged second light rod 210 is welded and fixed inside the mating groove 29. A spring 211 is sleeved on the second light rod 210, and the upper end of the spring 211 abuts against the top of the mating groove 29.

[0049] It should be noted that the lower mold 2 is located inside the slide groove 12 and can move along the length of the slide groove 12. Therefore, the slide groove 12 has a positioning function for the lower mold 2 and enhances the stability of the lower mold 2.

[0050] The lower mold 2 has a first base plate 21, which extends above the worktable 11. A matching slide 22 is bolted to its lower end. Multiple first balls 23 are embedded in the lower end of the matching slide 22. The first balls 23 roll on the worktable 11 and provide support and auxiliary positioning for the entire lower mold 2. This can further enhance the stability of the lower mold 2 and ensure stable displacement of the lower mold 2. At the same time, it reduces the friction force it experiences during movement and can further improve the service life of the lower mold 2.

[0051] A first guide rod 27 is also provided inside the slide groove 12, and a first sliding hole 26 is provided on the first base plate 21. The first guide rod 27 passes through the first sliding hole 26 to achieve a sliding connection between the first base plate 21 to form a precision moving pair, which is also used to increase the stability of the lower mold 2.

[0052] The cylinder 25 is the driving source. It is fixed to the upper end of the worktable 11 by the foot 24, and its output end is fixed to the lower mold 2. Therefore, the cylinder 25 can be used to directly drive the lower mold 2 to move, so as to achieve stable adjustment of the lower mold 2.

[0053] The lower mold 2 has a through-hole 28 at its inner bottom, which is used to install the lifting assembly 3 to form a complete mold structure.

[0054] For component 3;

[0055] Please see Figure 6 , Figure 7 and Figure 8 The lifting assembly 3 includes a second base plate 31, which is disposed inside the through opening 28 and its end extends into the mating groove 29. A second sliding hole 32 is provided on the second base plate 31, and the second light rod 210 passes through the second base plate 31 along the second sliding hole 32 and is slidably connected to it. The lower end of the spring 211 abuts against the second base plate 31.

[0056] The upper end of the second base plate 31 has an integrally connected top block 33. The upper end of the top block 33 is flush with the bottom of the inner cavity of the lower mold 2, and can also move vertically relative to the lower mold 2 to enter the cavity.

[0057] The lower end of the second base plate 31 is provided with an integrally connected fixing block 37. Multiple second balls 38 are embedded in the lower end of the fixing block 37. The second balls 38 roll in the bottom of the slide groove 12.

[0058] The top block 33 has a cavity inside, and an air hole 34 is provided on its outer wall near the top. The lower end of the second base plate 31 is also provided with a connecting air nozzle 35 that connects to the cavity inside the top block 33. A first air guide pipe 36 is installed on the connecting air nozzle 35.

[0059] It should be noted that the lifting assembly 3 includes a second base plate 31, which is located inside the through opening 28 and extends into the mating groove 29. Meanwhile, the second smooth rod 210 inside the mating groove 29 passes through the second base plate 31 and is slidably connected to it, which has a positioning function for the second base plate 31. A spring 211 is also provided on the second smooth rod 210. The upper end of the spring 211 abuts against the top of the mating groove 29, and the lower end abuts against the second base plate 31, thus always generating an elastic force on the second base plate 31, causing the second base plate 31 to move down to the lowest position inside the mating groove 29.

[0060] When the second base plate 31 is in the lowest position, the upper surface of the top block 33 at its upper end is flush with the bottom of the inner cavity of the lower mold 2. At this time, it can be used for normal injection. At this time, the second ball 38 can contact the inner bottom of the slide groove 12 or not. It is only necessary to ensure that the inner bottom of the lower mold 2 is flat.

[0061] When the injection is completed and the finished product needs to be removed, the cylinder 25 drives the lower mold 2 to move. During the movement, the second ball 38 will contact the bottom of the slide 12. Since the bottom of the slide 12 is inclined, the reaction force generated by the bottom of the slide 12 on the second ball 38 gradually increases during the continuous movement of the lower mold 2. This overcomes the elastic force of the spring 211 and moves upward, causing the top block 33 to move towards the inner cavity of the lower mold 2, thereby lifting the finished product to assist in subsequent demolding.

[0062] The top block 33 has a hollow cavity inside, and its side wall and near the top have air holes 34. Under normal conditions, the upper end of the top block 33 is flush with the bottom surface of the inner cavity of the lower mold 2, and the air holes 34 are closed. However, as the main part of the top block 33 moves upward, the area where the air holes 34 are located will enter the inner cavity of the lower mold 2 and be located in the gap between the finished product and the bottom surface of the inner cavity of the lower mold 2. Therefore, the gas it exits is located in this gap. Since the introduced air is cold air, it has a cooling effect on both the finished product and the lower mold 2.

[0063] At the same time, as more and more air enters, the air pressure inside the gap will increase. Under the action of air pressure, it can also exert a force on the finished product, which also has an auxiliary effect on the subsequent removal operation.

[0064] For gas supply component 4;

[0065] Please see Figure 9 The air supply assembly 4 includes two ring seats 41, each with a cavity inside. An air bladder 42 is also provided between the two ring seats 41. Both ring seats 41 are sleeved on the first guide rod 27. One of the ring seats 41 is fixed to the inner wall of the slide groove 12 and has an air inlet 43. The other ring seat 41 is fixed to the outside of the lower mold 2 and has an air outlet 44. A one-way valve 45 is installed on both the air inlet 43 and the air outlet 44. A second air guide pipe 46 is also installed at the air outlet 44. The other end of the second air guide pipe 46 is connected to the first air guide pipe 36.

[0066] It should be noted that in the air supply assembly 4, the two ring seats 41 and the air bag 42 between them form an integral structure. Both are sleeved on the first light rod 27, and the two ring seats 41 are respectively fixed to the inner wall of the slide groove 12 and the lower mold 2. Therefore, during the movement of the lower mold 2, the retractable air bag 42 can be squeezed or pulled.

[0067] During the pulling process of the airbag 42, the air inlet 43 located on the ring seat 41 can enter the air. Since the ring seat 41 is far away from the lower mold 2, the air temperature entering the airbag 42 is relatively low and can be used for cooling. During the squeezing process of the airbag 42, the gas inside the airbag 42 is discharged from the air outlet 44. A second air guide pipe 46 is installed at the air outlet 44 and is connected to the first air guide pipe 36. Therefore, the discharged gas can directly enter the top block 33.

[0068] The specific operating procedure of the device is as follows: First, the lower mold 2 and the upper mold are misaligned to facilitate the placement of parts inside the lower mold 2. After placement is completed, the lower mold 2 is moved to be located below the upper mold, followed by mold closing and casting.

[0069] After molding, the lower mold 2 is moved. During this movement, the top block 33 gradually moves upward to lift the molded product. Simultaneously, the airbag 42 is compressed, and its internal gas enters the top block 33. After the air holes 34 in the top block 33 move into the cavity of the lower mold 2, cold air is discharged. This cold air can be used to further cool the lower mold 2 and the product itself, while also increasing the internal air pressure of the lower mold 2. This air pressure helps in the subsequent removal of the molded product, thereby further improving the safety and processing efficiency of battery injection molding.

[0070] The above are merely embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A battery injection molding machine, comprising a frame (1), a worktable (11) disposed on the frame (1), and a mold disposed on the worktable (11), characterized in that: The mold includes a liftable upper mold and a lower mold (2) that can move horizontally relative to the upper mold, such that the lower mold coincides with or is offset from the upper mold in the vertical direction. The bottom of the cavity of the lower mold (2) has a through-hole (28), and the through-hole (28) is provided with a lifting component (3) that can be lifted and moved to eject the molded product. The workbench (11) has an air supply component (4) that is linked to the lower mold (2). The air supply component (4) is connected to the lifting component (3) and air is injected into the lower mold (2) through the lifting component (3).

2. The battery injection molding equipment according to claim 1, characterized in that, A slide groove (12) is also provided at the upper end of the workbench (11). The lower mold (2) is slidably connected to the inside of the slide groove (12). The bottom of the slide groove (12) is set as an inclined surface, and the depth decreases from the end near the upper mold to the end away from the upper mold.

3. The battery injection molding equipment according to claim 1, characterized in that, The lower end of the lower mold (2) has an integrally connected first base plate (21). The lower end of the first base plate (21) and the position away from the center are symmetrically provided with a matching slide (22). The lower end of the matching slide (22) is embedded with a plurality of first balls (23). The first balls (23) roll on the upper surface of the worktable (11). A through-hole (26) is provided on the side of the first base plate (21), and a horizontally arranged first light rod (27) is fixed on the inner wall of the slide groove (12). The first light rod (27) passes through the first base plate (21) along the first slide hole (26) and is slidably connected to it.

4. The battery injection molding equipment according to claim 3, characterized in that, The upper end of the workbench (11) is bolted with a leg (24), and a cylinder (25) is bolted on the leg (24). The output end of the cylinder (25) is fixed to the side of the lower mold (2) to drive the lower mold (2) to move along the length of the slide (12).

5. The battery injection molding equipment according to claim 1, characterized in that, The inner wall of the through-hole (28) is also provided with a mating groove (29). A vertically arranged second light rod (210) is welded and fixed inside the mating groove (29). A spring (211) is sleeved on the second light rod (210), and the upper end of the spring (211) abuts against the top of the mating groove (29).

6. The battery injection molding equipment according to claim 1, characterized in that, The lifting assembly (3) includes a second base plate (31), which is disposed inside the through opening (28) and its end extends into the mating groove (29). A second sliding hole (32) is provided on the second base plate (31), and a second light rod (210) passes through the second base plate (31) along the second sliding hole (32) and is slidably connected to it. The lower end of the spring (211) abuts against the second base plate (31). The upper end of the second base plate (31) has an integrally connected top block (33), the upper end of which is flush with the inner bottom of the mold cavity of the lower mold (2), and can also move vertically relative to the lower mold (2) to enter the mold cavity.

7. The battery injection molding equipment according to claim 6, characterized in that, The lower end of the second base plate (31) is provided with an integrally connected fixing block (37), and the lower end of the fixing block (37) is embedded with a plurality of second balls (38), which roll in the bottom of the slide groove (12).

8. The battery injection molding equipment according to claim 6, characterized in that, The top block (33) has a cavity inside, and an air hole (34) is provided on its outer wall near the top. The lower end of the second base plate (31) is also provided with a connecting air nozzle (35) that connects to the cavity inside the top block (33). A first air guide pipe (36) is installed on the connecting air nozzle (35).

9. The battery injection molding equipment according to claim 1, characterized in that, The air supply assembly (4) includes two ring seats (41), each of which has a cavity inside. An air bag (42) is also provided between the two ring seats (41). Both ring seats (41) are sleeved on the first light rod (27). One of the ring seats (41) is fixed to the inner wall of the slide groove (12) and has an air inlet (43). The other ring seat (41) is fixed to the outside of the lower mold (2) and has an air outlet (44). A one-way valve (45) is installed on both the air inlet (43) and the air outlet (44). A second air guide pipe (46) is also installed at the air outlet (44). The other end of the second air guide pipe (46) is connected to the first air guide pipe (36).

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