Double-sided injection molding machine for bipolar plate of hydrogen energy power battery

Abstract

The invention discloses a double-sided injection molding machine for a bipolar plate of a hydrogen energy power battery, and provides the following scheme that the double-sided injection molding machine comprises a box body, fixing frames are arranged on the two sides, located on a sliding plate, of the box body, an inner mold and an outer mold are fixedly connected to the ends, close to the sliding plate, of the fixing frames, and the inner mold and the outer mold are movably connected with a top mold through mold grooves; a pair of injection molding machines corresponding to the injection molding pipes are arranged on the fixing frame, a pushing assembly is connected to the fixing column, a rotating mechanism is connected to the lifting plate, and a feeding mechanism is connected to the box body; a second motor drives a supporting plate to support an electrode plate, so that the electrode plate is conveniently and automatically placed, an alternate injection molding mode is adopted, the working efficiency is conveniently improved, a third motor is started in the injection molding process, so that injection molding is conducted while a top mold rotates, a mold groove is rapidly filled, the working efficiency is improved, and the production cost is reduced. And the probability of bubble generation can be reduced by adopting a layer-by-layer injection molding plastic covering injection molding method, and the top mold independently moves with the outer mold and the inner mold, so that demolding is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of rubber and plastic machines, and in particular to a double-sided injection molding machine for bipolar plates of hydrogen energy power batteries. Background Art

[0002] Bipolar plate, also known as current collector, is one of the important components of hydrogen energy power battery. It has the following functions and properties: separation of fuel and oxidant, preventing gas from penetrating; collecting and conducting current, high conductivity; designed and processed flow channel, can evenly distribute gas to the reaction layer of electrode for electrode reaction; can discharge heat and keep the battery temperature field uniform; corrosion resistance; impact and vibration resistance; thin thickness; light weight; low cost, easy machining, suitable for batch manufacturing, etc.

[0003] The structure of the bipolar plate includes an anode plate, a cathode plate, an anode side sealing ring and a cathode side sealing ring; the anode plate and the cathode plate are combined into an integral structure, and the anode side sealing ring and the cathode side sealing ring are respectively arranged on the outside of the anode plate and the outside of the cathode plate. The traditional sealing ring is to use a dispensing machine to continuously apply the sealant on the outside of the anode plate and the cathode plate, and the sealing ring is formed after the sealing glue is cured. However, the use of dispensing on the anode plate and the cathode plate is not only inefficient, but also has joint marks on the sealing ring. In order to solve the above problems, the sealing ring is directly injection molded on the bipolar plate by in-mold injection molding.

[0004] Bipolar plate injection molding is also known as double-layer injection molding. After the upper and lower molds are closed, the upper and lower molds are injected with glue at the same time or at intervals to form two layers of different colloids. After the injected glue is cooled and formed, the upper and lower molds are opened, and the product formed in the mold is ejected by the demolding and ejection mechanism.

[0005] There are still some problems in the injection molding process:

[0006] 1. In the double-layer injection molding process, the product needs to be injected with liquid silicone in the lower mold through a screw injection machine. This process causes the lower mold to also produce a water outlet, making the connection between the product and the lower mold extremely strong. In addition, due to the limited height space between the upper mold and the lower mold, the staff faces great difficulties when trying to remove the product, especially for soft rubber products. The demoulding difficulty is significantly increased, thereby greatly reducing the efficiency of product demoulding;

[0007] 2. During the injection molding operation, the position of the injection port remains fixed, which results in a long time for the mold cavity to be completely filled with plastic. During the filling process, the material injected later will push the previous material forward slowly. If the injection speed is too fast, it may cause material deformation and increase internal stress, which may cause cracks or breakage in the finished product; on the contrary, if the injection speed is too slow, it may cause premature cooling. Both of these situations will have an adverse effect on the quality of the finished product. Therefore, strict requirements are placed on the accuracy of the injection speed, which also increases the complexity of the operation;

[0008] 3. The one-by-one injection molding method is relatively inefficient, especially in the process of placing the electrode sheet, which has extremely high requirements for the accuracy of the electrode sheet position. Once the electrode sheet is offset, the position of the rubber ring will also be offset, which will directly affect the subsequent assembly of the hydrogen energy power battery electrode sheet. Summary of the invention

[0009] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a double-sided injection molding machine for hydrogen energy power battery bipolar plates that is convenient for electrode sheet placement and electrode sheet rubber ring injection and demoulding.

[0010] In order to achieve the above object, the present invention adopts the following technical solutions:

[0011] A double-sided injection molding machine for bipolar plates of hydrogen energy power batteries, comprising a box body, a top end of which is slidably connected to a slide plate, the slide plate is provided with a pair of placement grooves, and an alternating mechanism for controlling the sliding of the slide plate is connected to the box body;

[0012] The box body is connected with an injection molding mechanism, and the injection molding mechanism includes a fixed frame. The box body is provided with fixed frames on both sides of the slide. An opening and closing driving mechanism is connected between the fixed frame and the box body. The inner mold and the outer mold are fixedly connected at one end of the fixed frame close to the slide. The inner mold is fixedly connected with a fixing column. A connecting frame is installed on the fixing column. The top of the connecting frame is installed on the fixed frame. A mold groove is provided between the inner mold and the outer mold. The inner mold and the outer mold are movably connected with a top mold through the mold groove. A pair of penetrating injection molding tubes are installed on the top mold. A pair of injection molding machines corresponding to the injection molding tubes are provided on the fixed frame. The ejection end of the injection molding machine is connected to the injection molding tube.

[0013] The fixed column is connected with a demoulding mechanism, and the demoulding mechanism includes a movable ring, the fixed column is movably connected with the movable ring, a lifting plate is installed at the bottom end of the movable ring, the lifting plate is fixedly connected to the top mold, the injection molding machine is installed on the lifting plate, the fixed column is connected with a pushing component for controlling the lifting and lowering of the movable ring, and the lifting plate is connected with a rotating mechanism for driving the top mold to rotate;

[0014] The box body is connected with a feeding mechanism, which includes a lifting plate. The box body is slidably connected with a lifting plate, which is fixed to the top of the bottom fixed frame. The lifting plate is provided with an electric lifting support plate, on which electrode sheets are stacked, and rubber rings can be injected and bonded on both sides of the electrode sheets by an injection molding machine.

[0015] Preferably, the alternating mechanism comprises a second rack, the slide plate is provided with a second rack, the box body is provided with a first motor, the output shaft of the first motor is provided with a second gear, and the second gear is meshed with the second rack.

[0016] Preferably, the opening and closing drive mechanism includes a first rack, a pair of first racks are slidably connected to the box body, a first gear is meshed between the pair of first racks, the first gear is rotatably connected to the box body, a first electric push rod is installed on the box body, the telescopic end of the first electric push rod is fixedly connected to one of the first racks, a connecting plate is installed on the first rack, and the pair of connecting plates are respectively installed on a pair of fixed frames.

[0017] Preferably, a pair of toggle rods are installed on the top mold, and the lifting plate is fixedly connected to the top mold through the toggle rods.

[0018] Preferably, the pushing assembly includes a second electric push rod, which is installed on the connecting frame, the telescopic end of the second electric push rod is fixedly connected to a pair of sliding rods, the movable ring is rotatably connected to a rotating ring, and the bottom end of the sliding rod is fixedly connected to the top of the rotating ring.

[0019] Preferably, the rotating mechanism includes a third motor, the lifting plate is mounted with the third motor, the output shaft of the third motor is mounted with a third gear, the inner mold is mounted with an internal gear, and the third gear is meshed with the internal gear.

[0020] Preferably, storage baskets are installed at both ends of the bottom side of the lifting plate, the support plate slides inside the storage basket, a second motor is installed on the storage basket, a screw rod is installed on the output shaft of the second motor, the screw rod is rotatably connected to the storage basket, a slider is slidably connected to the storage basket, the slider is threadedly matched with the screw rod, and the bottom end of the support plate is installed on the slider.

[0021] Preferably, a limiting plate is slidably connected to the storage basket, a knob is threadedly connected to the limiting plate, a distal end of the knob abuts against the storage basket, and the limiting plate is used to abut against the supporting plate.

[0022] Preferably, the mold groove is in a trapezoidal shape, and the trapezoidal bottom end of the mold groove is close to the slide plate.

[0023] Preferably, the thickness of the slide plate is smaller than that of the electrode sheet, and the length of the slide plate is two-thirds of that of the lifting plate.

[0024] Compared with the prior art, the present invention provides a double-sided injection molding machine for bipolar plates of hydrogen energy power batteries, which has the following beneficial effects:

[0025] 1. The double-sided injection molding machine for bipolar plates of hydrogen energy power batteries places the electrode sheet on the support plate in advance, and the second motor drives the screw rod to rotate, thereby driving the slider to slide upward, driving the support plate to lift the electrode sheet, so that the electrode sheet at the top enters the inside of the placement groove, thereby facilitating the automatic placement of the electrode sheet. The first motor drives the slide plate to slide, and the slide plate drives the electrode sheet to slide through the placement groove, so that the electrode sheet moves to between a pair of fixed frames, and rubber rings can be injection molded on both sides of the electrode sheet. Another placement groove on the slide plate is exposed, which is convenient for placing the electrode sheet again. The electrode sheet with the rubber ring injection molded can be moved to the other side, thereby facilitating the injection molding of another electrode sheet. The alternating injection molding method is adopted, which is convenient for removal and improves work efficiency.

[0026] 2. The double-sided injection molding machine for bipolar plates of hydrogen energy power batteries starts the third motor at the same time during the injection process to drive the third gear to rotate, drive the internal gear to rotate, thereby drive the movable ring to rotate, drive the lifting plate to rotate, and then drive the top mold to rotate through the toggle rod. The injection machine will follow the rotation, so that the top mold rotates while injecting, thereby completing the rapid filling of the mold groove, thereby facilitating the improvement of work efficiency. The injection molding method of covering layers of injection molding glue can reduce the probability of bubble generation, ensure the injection molding quality, and at the same time have a lower requirement for the injection molding speed.

[0027] 3. The double-sided injection molding machine for bipolar plates of hydrogen energy power batteries has a pair of fixed frames that are close to each other, clamp the electrode sheet, and start the injection molding machine, so that the injection molding glue is injected into the interior of the mold groove through the injection molding tube. After the injection molding is completed, the injection molding glue will be solidified to both sides of the electrode sheet to form a rubber ring, and the second electric push rod will be contracted to pull the top mold and the solidified rubber ring apart to complete the demoulding of the top mold. After the demoulding is completed, the top mold is reset, and the first electric push rod is driven in the reverse direction, so that the pair of fixed frames move back to back, and the outer mold and the inner mold are away from the electrode sheet, thereby separating from the rubber ring, and completing the demoulding of the side wall of the rubber ring. The fixed frame at the bottom drives the lifting plate to move toward each other, so that the lifting plate and the slide plate are separated by the distance of the rubber ring, so that when the slide plate is driven to slide, the electrode sheet with the injection molded rubber ring can be pulled out through the slide plate, which is convenient for injection molding again and has a fast demoulding rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A three-dimensional view of a double-sided injection molding machine for bipolar plates of a hydrogen energy power battery proposed by the present invention;

[0029] Figure 2 A view of a connecting plate connecting structure of the present invention;

[0030] Figure 3 A view of the storage basket connection structure of the present invention;

[0031] Figure 4 A view of a first rack connection structure of the present invention;

[0032] Figure 5 A view of a skateboard connection structure of the present invention;

[0033] Figure 6 A view of a connection frame connection structure of the present invention;

[0034] Figure 7 A view of the movable ring connection structure of the present invention;

[0035] Figure 8 A view of the injection molding pipe connection structure of the present invention;

[0036] Fig. 9 A view of the inner mold connection structure of the present invention;

[0037] Fig.10 It is a view of the electrode sheet connection structure of the present invention.

[0038] In the figure: 1, box; 2, injection molding mechanism; 21, opening and closing driving mechanism; 211, first rack; 212, first electric push rod; 213, first gear; 214, connecting plate; 22, fixed frame; 23, injection molding machine; 24, inner mold; 25, outer mold; 26, connecting frame; 27, fixed column; 28, top mold; 29, injection molding tube; 3, alternating mechanism; 31, first motor; 32, second gear; 33, second rack; 34, slide plate; 35, placement groove ; 4. Feeding mechanism; 41. Storage basket; 42. Limiting plate; 43. Knob; 44. Support plate; 45. Screw rod; 46. Second motor; 47. Sliding bar; 48. Lifting plate; 5. Electrode sheet; 6. Demolding mechanism; 61. Second electric push rod; 62. Sliding bar; 63. Lifting plate; 64. Movable ring; 65. Rotating ring; 66. Toggle rod; 7. Rubber ring; 8. Rotating mechanism; 81. Internal gear; 82. Third motor; 83. Third gear; 9. Mold groove. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] Embodiment 1:

[0042] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A double-sided injection molding machine for bipolar plates of hydrogen energy power batteries, comprising a box body 1, a slide plate 34 is slidably connected to the top of the box body 1, a pair of placement grooves 35 are arranged on the slide plate 34, an alternating mechanism 3 for controlling the sliding of the slide plate 34 is connected to the box body 1, a feeding mechanism 4 is connected to the box body 1, the feeding mechanism 4 comprises a lifting plate 48, a lifting plate 48 is slidably connected to the box body 1, the lifting plate 48 is fixed to the top of the bottom fixed frame 22, an electric lifting support plate 44 is arranged on the lifting plate 48, electrode sheets 5 are stacked on the support plate 44, and both sides of the electrode sheets 5 can be injected and bonded with rubber rings 7 by a glue injection machine 23 (the glue injection machine 23 refers to the existing Chinese utility model patent, the publication number is: CN 219600207 U, and the name is: a double-sided injection molding machine for bipolar plates of hydrogen energy power batteries), so as to facilitate the automatic placement of the electrode sheets 5.

[0043] In the present invention, the alternating mechanism 3 includes a second rack 33, the second rack 33 is installed on the slide plate 34, the first motor 31 is installed on the box body 1, and the second gear 32 is installed on the output shaft of the first motor 31. The second gear 32 is meshed with the second rack 33, so as to facilitate driving the slide plate 34 to slide.

[0044] In the present invention, storage baskets 41 are installed at both ends of the bottom side of the lifting plate 48, and the support plate 44 slides inside the storage basket 41. A second motor 46 is installed on the storage basket 41, and a screw rod 45 is installed on the output shaft of the second motor 46. The screw rod 45 is rotatably connected to the storage basket 41. A slider 47 is slidably connected to the storage basket 41, and the slider 47 is threadedly matched with the screw rod 45. The bottom end of the support plate 44 is installed on the slider 47, thereby facilitating the stable lifting of the electrode sheet 5.

[0045] In the present invention, a limiting plate 42 is slidably connected to the storage basket 41, and a knob 43 is threadedly connected to the limiting plate 42. The end of the knob 43 contacts the storage basket 41, and the limiting plate 42 is used to contact the supporting plate 44 to prevent the electrode sheet 5 from falling off.

[0046] In the present invention, the thickness of the slide plate 34 is smaller than that of the electrode sheet 5 , and the length of the slide plate 34 is two-thirds of the length of the lifting plate 48 , so that the slide plate 34 can slide easily.

[0047] Embodiment 2:

[0048] Based on Example 1, Figure 5 , Figure 6 , Figure 7 and Figure 8 , a double-sided injection molding machine for bipolar plates of hydrogen energy power batteries, an injection molding mechanism 2 is connected to a box body 1, and the injection molding mechanism 2 includes a fixed frame 22, and the box body 1 is provided with a fixed frame 22 on both sides of the slide 34, and an opening and closing driving mechanism 21 is connected between the fixed frame 22 and the box body 1, and the fixed frame 22 is fixedly connected to the inner mold 24 and the outer mold 25 at one end close to the slide 34, and a fixed column 27 is fixedly connected to the inner mold 24, and a connecting frame 26 is installed on the fixed column 27, and the top of the connecting frame 26 is installed on the fixed frame 22, and a mold groove 9 is provided between the inner mold 24 and the outer mold 25, and the inner mold 24 and the outer mold 25 are movably connected with a top mold 28 through the mold groove 9, and a pair of penetrating injection molding tubes 29 are installed on the top mold 28, and a pair of injection molding machines 23 corresponding to the injection molding tubes 29 are provided on the fixed frame 22, and the ejection end of the injection molding machine 23 is connected to the injection molding tube 29, so as to facilitate the injection molding glue to be injected into the mold groove 9 through the injection molding machine 23.

[0049] In the present invention, the opening and closing drive mechanism 21 includes a first rack 211, a pair of first racks 211 are slidably connected to the box body 1, a first gear 213 is meshed between the pair of first racks 211, the first gear 213 is rotatably connected to the box body 1, a first electric push rod 212 is installed on the box body 1, the telescopic end of the first electric push rod 212 is fixedly connected to one of the first racks 211, a connecting plate 214 is installed on the first rack 211, and a pair of connecting plates 214 are respectively installed on a pair of fixed frames 22, so as to drive the two pairs of inner molds 24 and outer molds 25 to be close to each other and fit together, thereby forming a closed space.

[0050] In the present invention, the mold groove 9 is in a trapezoidal shape, and the trapezoidal bottom end of the mold groove 9 is close to the slide plate 34, so as to facilitate pushing out the injected rubber ring 7.

[0051] Embodiment 3:

[0052] Based on Example 2, Fig. 9 , Fig.10A double-sided injection molding machine for bipolar plates of hydrogen energy power batteries, a demoulding mechanism 6 is connected to the fixed column 27, the demoulding mechanism 6 includes a movable ring 64, the fixed column 27 is movably connected with the movable ring 64, the bottom end of the movable ring 64 is installed with a lifting plate 63, the lifting plate 63 is fixedly connected to the top mold 28, the injection machine 23 is installed on the lifting plate 63, the fixed column 27 is connected with a pushing component for controlling the lifting and lowering of the movable ring 64, and the lifting plate 63 is connected with a rotating mechanism 8 for driving the top mold 28 to rotate, so as to realize injection molding while rotating, thereby improving the injection molding efficiency and reducing the formation of bubbles.

[0053] In the present invention, a pair of toggle rods 66 are installed on the top mold 28, and the lifting plate 63 is fixedly connected to the top mold 28 through the toggle rods 66, so as to facilitate driving the top mold 28 to rotate.

[0054] In the present invention, the pushing assembly includes a second electric push rod 61, which is installed on the connecting frame 26. The telescopic end of the second electric push rod 61 is fixedly connected to a pair of sliding rods 62. A rotating ring 65 is rotatably connected to the movable ring 64. The bottom end of the sliding rod 62 is fixedly connected to the top end of the rotating ring 65, thereby controlling the rise or fall of the top mold 28.

[0055] In the present invention, the rotating mechanism 8 includes a third motor 82, the third motor 82 is installed on the lifting plate 63, a third gear 83 is installed on the output shaft of the third motor 82, an internal gear 81 is installed on the inner mold 24, and the third gear 83 is meshed with the internal gear 81, thereby facilitating driving the lifting plate 63 to rotate.

[0056] Working principle: place the electrode sheet 5 on the support plate 44 in advance, push the limit plate 42 to make the limit plate 42 close to the electrode sheet 5, turn the knob 43 to limit the sliding of the limit plate 42, so as to facilitate the lifting of the electrode sheet 5, start the second motor 46 on one side, the second motor 46 drives the screw rod 45 to rotate, thereby driving the slider 47 to slide upward, driving the support plate 44 to lift the electrode sheet 5, so that the electrode sheet 5 at the top enters the inside of the placement groove 35, so as to facilitate the automatic placement of the electrode sheet 5, start the first motor 31, thereby driving the second gear 32 to rotate, thereby driving the slide plate 34 to slide through the second rack 33, and the slide plate 34 drives the electrode sheet 5 to slide through the placement groove 35, so that the electrode sheet 5 moves to between a pair of fixed frames 22, and then the rubber ring 7 can be injection molded on both sides of the electrode sheet 5, and another placement groove 35 on the slide plate 34 is exposed, so as to facilitate the placement of the electrode sheet 5 again, and the electrode sheet 5 with the rubber ring 7 injected can be moved to the other side, so as to facilitate the injection molding of another electrode sheet 5, and the alternating injection molding method is adopted to improve the work efficiency;

[0057] When the electrode sheet 5 moves between the pair of fixed frames 22, the first electric push rod 212 is controlled to work, and the first electric push rod 212 is extended, thereby pulling one of the first racks 211 to slide. Under the action of the first gear 213, the pair of first racks 211 move toward each other, thereby driving the pair of fixed frames 22 to approach each other through the connecting plate 214, so that the pair of fixed frames 22 are close to and close to the electrode sheet 5, thereby clamping the electrode sheet 5, and starting the injection molding machine 23, so that the injection molding glue is injected into the inside of the mold groove 9 through the injection molding tube 29;

[0058] During the injection molding process, the third motor 82 is started at the same time, driving the third gear 83 to rotate, driving the internal gear 81 to rotate, thereby driving the movable ring 64 to rotate, driving the lifting plate 63 to rotate, and then driving the top mold 28 to rotate through the toggle rod 66, and the injection molding machine 23 will rotate accordingly, so that the top mold 28 rotates while injecting, thereby completing the rapid filling of the mold groove 9, thereby improving work efficiency, and adopting the injection molding method of covering the layers of injection molding glue, which can reduce the probability of bubble generation and ensure the injection molding quality;

[0059] After the injection molding is completed, the plastic glue will solidify on both sides of the electrode sheet 5 to form a rubber ring 7, and the second electric push rod 61 will be contracted, thereby pulling the rotating ring 65 upward through the sliding rod 62, and at the same time driving the movable ring 64 to move upward, and pulling the toggle rod 66 through the lifting plate 63, thereby pulling the top mold 28 and the solidified rubber ring 7 apart, completing the demoulding of the top mold 28. After the demoulding is completed, the top mold 28 is reset, and the first electric push rod 212 is driven in the reverse direction, so that the pair of fixed frames 22 move in the opposite direction, so that the outer mold 25 and the inner mold 25 are separated. The mold 24 simultaneously turns away from the electrode sheet 5 at the bottom, the top mold 28 contacts the rubber ring 7, the outer mold 25 and the inner mold 24 turn away from the electrode sheet 5, thereby separating from the rubber ring 7, and completing the demoulding of the side wall of the rubber ring 7. The fixed frame 22 at the bottom drives the lifting plate 48 to move toward each other, so that the lifting plate 48 and the slide plate 34 are separated by a distance from the rubber ring 7, so that when the slide plate 34 is driven to slide, the electrode sheet 5 with the rubber ring 7 injected can be pulled out through the slide plate 34, thereby facilitating the removal of the electrode sheet 5 and facilitating re-injection.

[0060] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A double-sided injection molding machine for bipolar plates of hydrogen energy power batteries, comprising a box (1), characterized in that: A slide plate (34) is slidably connected to the top of the box body (1), a pair of placement grooves (35) are provided on the slide plate (34), and an alternating mechanism (3) for controlling the sliding of the slide plate (34) is connected to the box body (1); The box body (1) is connected to an injection molding mechanism (2), the injection molding mechanism (2) comprising a fixed frame (22), the box body (1) is provided with a fixed frame (22) on both sides of the slide plate (34), an opening and closing drive mechanism (21) is connected between the fixed frame (22) and the box body (1), one end of the fixed frame (22) close to the slide plate (34) is fixedly connected to the inner mold (24) and the outer mold (25), the inner mold (24) is fixedly connected to a fixed column (27), and a connecting rod (21) is installed on the fixed column (27). A connecting frame (26), the top end of the connecting frame (26) being mounted on the fixed frame (22), a die groove (9) being provided between the inner die (24) and the outer die (25), the inner die (24) and the outer die (25) being movably connected to a top die (28) via the die groove (9), a pair of injection molding tubes (29) penetrating therethrough being installed on the top die (28), a pair of injection molding machines (23) corresponding to the injection molding tubes (29) being provided on the fixed frame (22), and the ejection ends of the injection molding machines (23) being connected to the injection molding tubes (29); The fixed column (27) is connected to a demoulding mechanism (6), the demoulding mechanism (6) comprises a movable ring (64), the fixed column (27) is movably connected to the movable ring (64), a lifting plate (63) is installed at the bottom end of the movable ring (64), the lifting plate (63) is fixedly connected to the top mold (28), the injection molding machine (23) is installed on the lifting plate (63), the fixed column (27) is connected to a pushing component for controlling the lifting of the movable ring (64), and the lifting plate (63) is connected to a rotating mechanism (8) for driving the top mold (28) to rotate; The box body (1) is connected to a feeding mechanism (4), the feeding mechanism (4) comprising a lifting plate (48), the box body (1) is slidably connected to the lifting plate (48), the lifting plate (48) is fixed to the top of the bottom fixed frame (22), the lifting plate (48) is provided with an electrically liftable support plate (44), the support plate (44) is stacked with electrode sheets (5), and rubber rings (7) can be injection-molded and bonded to both sides of the electrode sheets (5) through a glue injection machine (23).

2. A double-sided injection molding machine for bipolar plates of hydrogen energy power batteries according to claim 1, characterized in that: The alternating mechanism (3) comprises a second rack (33), the second rack (33) is mounted on the slide plate (34), a first motor (31) is mounted on the box body (1), a second gear (32) is mounted on the output shaft of the first motor (31), and the second gear (32) is meshed with the second rack (33).

3. A double-sided injection molding machine for bipolar plates of hydrogen energy power batteries according to claim 1, characterized in that: The opening and closing driving mechanism (21) comprises a first rack (211); a pair of first racks (211) are slidably connected to the box body (1); a first gear (213) is meshed between the pair of first racks (211); the first gear (213) is rotatably connected to the box body (1); a first electric push rod (212) is mounted on the box body (1); a telescopic end of the first electric push rod (212) is fixedly connected to one of the first racks (211); a connecting plate (214) is mounted on the first rack (211); and the pair of connecting plates (214) are respectively mounted on a pair of fixed frames (22).

4. A double-sided injection molding machine for bipolar plates of hydrogen energy power batteries according to claim 1, characterized in that: A pair of toggle rods (66) are mounted on the top mold (28), and the lifting plate (63) is fixedly connected to the top mold (28) via the toggle rods (66).

5. A double-sided injection molding machine for bipolar plates of hydrogen energy power batteries according to claim 1, characterized in that: The pushing assembly comprises a second electric push rod (61), the second electric push rod (61) is mounted on the connecting frame (26), the telescopic end of the second electric push rod (61) is fixedly connected to a pair of sliding rods (62), the movable ring (64) is rotatably connected to a rotating ring (65), and the bottom end of the sliding rod (62) is fixedly connected to the top end of the rotating ring (65).

6. A double-sided injection molding machine for bipolar plates of hydrogen energy power batteries according to claim 1, characterized in that: The rotating mechanism (8) comprises a third motor (82), the third motor (82) is mounted on the lifting plate (63), a third gear (83) is mounted on the output shaft of the third motor (82), an internal gear (81) is mounted on the inner mold (24), and the third gear (83) meshes with the internal gear (81).

7. A double-sided injection molding machine for bipolar plates of hydrogen energy power batteries according to claim 1, characterized in that: Storage baskets (41) are installed at both ends of the bottom side of the lifting plate (48); the supporting plate (44) slides inside the storage basket (41); a second motor (46) is installed on the storage basket (41); a screw rod (45) is installed on the output shaft of the second motor (46); the screw rod (45) is rotatably connected to the storage basket (41); a slider (47) is slidably connected to the storage basket (41); the slider (47) is threadedly matched with the screw rod (45); and the bottom end of the supporting plate (44) is installed on the slider (47).

8. A double-sided injection molding machine for bipolar plates of hydrogen energy power batteries according to claim 7, characterized in that: The storage basket (41) is slidably connected to a limit plate (42), the limit plate (42) is threadedly connected to a knob (43), the end of the knob (43) abuts against the storage basket (41), and the limit plate (42) is used to abut against the support plate (44).

9. A double-sided injection molding machine for bipolar plates of hydrogen energy power batteries according to claim 1, characterized in that: The die groove (9) is in a trapezoidal shape, and the trapezoidal bottom end of the die groove (9) is close to the slide plate (34).

10. A double-sided injection molding machine for bipolar plates of hydrogen energy power batteries according to claim 1, characterized in that: The thickness of the slide plate (34) is smaller than that of the electrode sheet (5), and the length of the slide plate (34) is two thirds of the length of the lifting plate (48).

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