Multi-cavity synchronous injection molding battery protection shell mold structure

Abstract

The utility model discloses a multi-cavity synchronous injection molding battery protection shell mold structure, which relates to the technical field of injection molding molds, and comprises a male mold and a female mold which are oppositely arranged, a cavity is arranged at the central position of the front side of the female mold, and the male mold and the female mold are oppositely arranged. Four cavities are distributed around the center position of the front side of the female mold at equal angle intervals, and the multiple cavities are communicated through communication grooves; according to the multi-cavity synchronous injection molding battery protection shell mold structure, the effect of synchronously spraying a central cavity and a plurality of peripheral cavities distributed in a surrounding mode at the same time can be achieved, the single spraying action can cover all the cavities through the structural arrangement, compared with traditional manual point-by-point spraying, the efficiency is improved, more manpower is saved, the production efficiency is greatly improved, and the production cost is reduced. And the spraying uniformity is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a battery protective shell mold structure for multi-cavity synchronous injection molding. Background Technology

[0002] To achieve mass injection molding of battery protective cases, existing molds typically have multiple cavities arranged in a regular pattern. This allows for the injection molding of multiple battery protective cases in a single mold closing, greatly increasing injection efficiency. However, due to the presence of multiple cavities, if only one nozzle is used to spray the release agent directly onto the front of the mother mold before mold closing, uneven spraying often occurs. Current technology involves manually holding the nozzle and spraying each cavity evenly in sequence. However, manual spraying is time-consuming and inefficient, greatly limiting production efficiency. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this invention is to provide a multi-cavity synchronous injection molding battery protective shell mold structure, thereby solving the problem of low production efficiency caused by the need for manual spraying of release agent into multiple cavities in existing battery protective shell injection molds.

[0004] The technical solution of this utility model is as follows:

[0005] A multi-cavity synchronous injection molding battery protective shell mold structure includes a male mold and a female mold arranged opposite to each other. The top surface of the female mold is rotatably connected to a support bar, which is driven to flip by a flipping structure.

[0006] The support bar is connected to a first nozzle and a second nozzle at one end away from the mother mold. When the support bar is in the spraying state, the first nozzle is facing a cavity at the center of the mother mold, and the second nozzle is driven by the surrounding assembly to rotate around the axis of the first nozzle, passing through multiple cavities arranged around the center of the mother mold in sequence.

[0007] Optionally, the flipping structure includes an electric push rod rotatably connected to the top surface of the mother mold via a pivot pin, and the extended end of the electric push rod is rotatably connected to the support bar via a pivot pin.

[0008] Optionally, the end of the support bar facing away from the mother mold is bent downward to form a vertical part. When the support bar is in the spraying state, the vertical part faces the front side of the mother mold, and both the first spray head and the second spray head are connected to the vertical part.

[0009] Optionally, the lower end of the vertical part is rotatably connected to two liquid inlet pipes via bearings. When the support bar is in the spraying state, the two liquid inlet pipes are directly opposite a cavity at the center of the mother mold, and the axis of the two liquid inlet pipes is perpendicular to the front side of the mother mold. The end of the two liquid inlet pipes near the mother mold is connected to the liquid inlet end of a tee. The first liquid outlet end of the tee is coaxially arranged with the liquid inlet end of the tee. The first nozzle is installed on the first liquid outlet end of the tee. The second liquid outlet end of the tee is connected to the second nozzle through the three liquid inlet pipes.

[0010] Optionally, a liquid inlet pipe is fixed to the outer wall of the support bar. The liquid inlet pipe is arranged along the extension path of the support bar, and the lower end of the liquid inlet pipe is rotatably connected to the liquid inlet end of the second liquid inlet pipe through a rotating sealed bearing.

[0011] Optionally, the surrounding assembly includes a motor fixed to the lower end of the vertical part, a drive gear fixed to the output end of the motor, a driven gear fixed to the outer wall of the end of the two-section liquid inlet pipe, and the drive gear and the driven gear meshing and connected.

[0012] Optionally, the first inlet pipe, the second inlet pipe, and the third inlet pipe are all rigid metal pipes.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention utilizes a retractable design with a flip-up support structure, allowing the first and second spray heads to be quickly positioned at the front of the mold during spraying. The first spray head is fixedly aligned with the central cavity of the mother mold, while the second spray head is connected to a tee via three inlet pipes. In conjunction with the motor-gear transmission system in the surrounding assembly, the second spray head is driven to rotate uniformly around the central axis, enabling simultaneous spraying of the central cavity and multiple surrounding cavities. This structural arrangement allows a single spraying action to cover all cavities, significantly improving efficiency compared to traditional manual point-by-point spraying, saving manpower, greatly increasing production efficiency, and ensuring uniform spraying. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram showing the positions of the first and second nozzles of this utility model;

[0017] Figure 3 This utility model Figure 2 Enlarged view of point A;

[0018] Figure 4 This is a schematic diagram showing the position of the tee of this utility model;

[0019] Figure 5 This is a schematic diagram showing the support bar of this utility model in an avoidance state;

[0020] Reference numerals in the attached drawings: 1. Male mold; 2. Female mold; 201. Cavity; 3. Support bar; 301. Vertical part; 4. First liquid inlet pipe; 5. Second liquid inlet pipe; 6. T-junction; 7. First nozzle; 8. Third liquid inlet pipe; 9. Second nozzle; 10. Motor; 11. Drive gear; 12. Driven gear; 13. Electric push rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figures 1 to 5 This embodiment provides a multi-cavity synchronous injection molding battery protective shell mold structure, including a male mold 1 and a female mold 2 arranged opposite to each other. A cavity 201 is arranged at the center of the front side of the female mold 2, and four cavities 201 are also distributed at equal angles around the center of the front side of the female mold 2. The multiple cavities 201 are connected by connecting grooves. When the female mold 2 and the male mold 1 are closed during injection molding, five battery protective shells can be injected at the same time, which greatly improves the injection molding efficiency.

[0023] A support strip 3 is rotatably connected to the top surface of the mother mold 2. The end of the support strip 3 facing away from the mother mold 2 is bent downward to form a vertical part 301. When the support strip 3 is in the spraying state, the vertical part 301 faces the front side of the mother mold 2. A liquid inlet pipe 4 is fixed to the outer wall of the support strip 3. The liquid inlet pipe 4 is arranged along the extension path of the support strip 3. The lower end of the vertical part 301 is rotatably connected to a second liquid inlet pipe 5 through a bearing. The lower end of the first liquid inlet pipe 4 is rotatably connected to the liquid inlet end of the second liquid inlet pipe 5 through a rotating sealed bearing. The liquid inlet end of the first liquid inlet pipe 4 can be connected to a mold release agent pumping device to pump the mold release agent into the first liquid inlet pipe 4 and then into the second liquid inlet pipe 5. The second liquid inlet pipe 5 can rotate on its own.

[0024] When the support strip 3 is in the spraying state, the two-section liquid inlet pipe 5 is directly opposite a cavity 201 at the center of the mother mold 2, and the axis of the two-section liquid inlet pipe 5 is perpendicular to the front side of the mother mold 2. The end of the two-section liquid inlet pipe 5 closest to the mother mold 2 is connected to the liquid inlet end of the tee 6. The first liquid outlet end of the tee 6 is coaxially arranged with the liquid inlet end of the tee 6. The first nozzle 7 is installed on the first liquid outlet end of the tee 6, and the second liquid outlet end of the tee 6 is connected to the second nozzle 9 through the three-section liquid inlet pipe 8. When the support strip 3 is in the spraying state, the first nozzle 7 is directly opposite a cavity 201 at the center of the mother mold 2. When the second nozzle 9 is driven to rotate around the axis of the first nozzle 7, it can sequentially pass over multiple cavities 201 arranged around the center of the mother mold 2.

[0025] Thus, when the support strip 3 is in the spraying state, the release agent is pumped into one end of the liquid inlet pipe. The release agent enters the first nozzle 7 and the second nozzle 9 through the three-way valve 6. The first nozzle 7 sprays the release agent into a cavity 201 at the center of the mother mold 2. By intermittently rotating the two-section liquid inlet pipe 5, the second nozzle 9 is positioned directly in front of the multiple cavities 201 arranged around the center of the mother mold 2, so that the release agent is sprayed into the multiple cavities 201 arranged around the center. The orifice diameter of the first nozzle 7 is smaller than that of the second nozzle 9. The amount of sprayed by the first nozzle 7 in four sprays is equal to the amount of sprayed by the second nozzle 9 in one spray. After the circumferential spraying is completed, the amount of release agent sprayed into the five cavities 201 is balanced.

[0026] As for driving the rotation of the second nozzle 9, a motor 10 is fixed at the lower end of the vertical part 301, and a drive gear 11 is fixed at the output end of the motor 10. A driven gear 12 is fixed on the outer wall of the end of the two-section liquid inlet pipe 5. The drive gear 11 and the driven gear 12 are meshed and connected. By driving the motor 10 to rotate, the drive gear 11 drives the driven gear 12 to rotate, which can drive the two-section liquid inlet pipe 5, the three-way valve 6 and the second nozzle 9 to rotate. During the rotation of the three-section liquid inlet pipe 8, it can be staggered from the motor 10 and will not cause movement obstruction. By preset the rotation angle of the motor 10, the second nozzle 9 can be controlled to rotate intermittently and face the cavity 201. When the power is cut off, the output end of the motor 10 remains stationary and locked, and will not be rotated, ensuring the stability of the position of the second nozzle 9. This effect can be achieved by using an existing worm gear reducer motor or other motors with a power-off self-locking effect.

[0027] To ensure stable delivery of the release agent and stable operation of the rotating device, the first inlet pipe 4, the second inlet pipe 5, and the third inlet pipe 8 are all rigid metal pipes.

[0028] Before mold closing, the support bar 3 needs to be flipped, and the vertical part 301 needs to be flipped to one side of the female mold 2. An electric push rod 13 is rotatably connected to the top surface of the female mold 2 via a shaft pin. The extended end of the electric push rod 13 is rotatably connected to the support bar 3 via a shaft pin. By driving the electric push rod 13 to extend, the support bar 3 is pushed to flip, causing the support bar 3 to switch to an avoidance state. Figure 5 Then, the mold is closed and injection molding is performed. After the injection molding and demolding are completed, the electric push rod 13 is driven to retract, causing the support bar 3 to flip to the spraying state.

[0029] In summary, this utility model can achieve the effect of simultaneous spraying of the central cavity 201 and multiple peripheral cavities 201 distributed around it. This structural arrangement allows a single spraying action to cover all cavities 201, which improves efficiency compared to traditional manual point-by-point spraying, saves manpower, greatly improves production efficiency, and ensures the uniformity of spraying.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-cavity synchronous injection molding battery protective shell mold structure, comprising a male mold and a female mold arranged opposite to each other, characterized in that, The top surface of the mother mold is rotatably connected to a support bar, which is driven to flip by a flipping structure. The support bar is connected to a first nozzle and a second nozzle at one end away from the mother mold. When the support bar is in the spraying state, the first nozzle is facing a cavity at the center of the mother mold, and the second nozzle is driven by the surrounding assembly to rotate around the axis of the first nozzle, passing through multiple cavities arranged around the center of the mother mold in sequence.

2. The multi-cavity synchronous injection molding battery protective shell mold structure according to claim 1, characterized in that, The flipping structure includes an electric push rod rotatably connected to the top surface of the mother mold via a pivot pin, and the extended end of the electric push rod is rotatably connected to the support bar via a pivot pin.

3. The multi-cavity synchronous injection molding battery protective shell mold structure according to claim 2, characterized in that, The support bar is bent downward at the end away from the mother mold to form a vertical part. When the support bar is in the spraying state, the vertical part is facing the front side of the mother mold. The first spray head and the second spray head are both connected to the vertical part.

4. The multi-cavity synchronous injection molding battery protective shell mold structure according to claim 3, characterized in that, The lower end of the vertical part is rotatably connected to two liquid inlet pipes via bearings. When the support bar is in the spraying state, the two liquid inlet pipes are directly opposite a cavity at the center of the mother mold, and the axis of the two liquid inlet pipes is perpendicular to the front side of the mother mold. The end of the two liquid inlet pipes near the mother mold is connected to the liquid inlet end of a tee. The first liquid outlet end of the tee is coaxially arranged with the liquid inlet end of the tee. The first nozzle is installed on the first liquid outlet end of the tee. The second liquid outlet end of the tee is connected to the second nozzle through the three liquid inlet pipes.

5. The multi-cavity synchronous injection molding battery protective shell mold structure according to claim 4, characterized in that, A section of liquid inlet pipe is fixed to the outer wall of the support bar. The liquid inlet pipe is arranged along the extension path of the support bar. The lower end of the liquid inlet pipe is rotatably connected to the liquid inlet end of the second liquid inlet pipe through a rotating sealed bearing.

6. The battery protective shell mold structure for multi-cavity synchronous injection molding according to claim 5, characterized in that, The surrounding assembly includes a motor fixed to the lower end of the vertical part, a drive gear fixed to the output end of the motor, and a driven gear fixed to the outer wall of the end of the two-section liquid inlet pipe. The drive gear and the driven gear are meshed and connected.

7. The multi-cavity synchronous injection molding battery protective shell mold structure according to claim 6, characterized in that, The first, second, and third inlet pipes are all rigid metal pipes.

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