Vacuum casting apparatus for an acoustic enclosure

Abstract

The utility model relates to vacuum casting technical field especially relates to a kind of vacuum casting equipment of sound box, including casting chamber, limit frame, vacuum pipe and blanking pipe, limit frame is fixedly connected in casting chamber, vacuum pipe is connected on casting chamber, blanking pipe is fixedly connected and is communicated on casting chamber, it is characterized by: still including fixed base, storage container and blanking cylinder, fixed base is fixedly connected on casting chamber, storage container is fixedly connected on fixed base, blanking cylinder is fixedly connected on fixed base. By starting motor, the output shaft of motor drives pivot and blanking block to move, blanking block no longer covers the passageway between blanking cylinder and storage container, while blanking block covers the passageway between blanking cylinder and blanking pipe, so that a certain amount of material flows into blanking cylinder from storage container, ensure that the material amount of injection mold is consistent each time, to reach the effect of ration, reduce surplus waste, and avoid shrinkage, cold shut and other defects caused by material fluctuation.

Description

Technical Field

[0001] This utility model relates to the field of vacuum casting technology, and in particular to a vacuum casting device for speaker housings. Background Technology

[0002] Vacuum casting equipment is a special casting equipment used to produce high-precision, high-strength metal shells. It achieves bubble-free filling of molten metal through vacuuming and precision molds, ensuring that the castings are dense and defect-free.

[0003] Patent CN215090621U discloses a vacuum casting molding device for convenient loading and unloading. It includes a vacuum chamber with a molding mechanism inside. A support rod is fixed to the bottom of the molding mechanism, and a first fixed plate with an arc-shaped structure is fixed to the bottom of the support rod. A first connecting plate with an annular structure is located below the first fixed plate, and a first connecting rod is fixed to the inner ring of the first connecting plate. When using this patent, the raw material is placed in a crucible, heated until it is in a molten state, and then enters the cavity of the upper mold through a first feed port and a second feed port. However, the aforementioned prior art patent involves manual addition of raw material, which is prone to problems of too much or too little material. Too much material leads to uneven cooling of the casting, resulting in shrinkage cavities or cracks; too little material results in insufficient filling of the casting.

[0004] Therefore, there is a need for a vacuum casting device for speaker housings with quantitative function. Utility Model Content

[0005] To overcome the shortcomings of existing patents that rely on manual addition of raw materials, which can easily lead to excessive or insufficient materials, this invention provides a vacuum casting device for speaker housings with quantitative functions. When there is too much material, the cooling rate of the casting will be uneven, resulting in shrinkage cavities or cracks. When there is too little material, the casting will have insufficient filling.

[0006] To address the aforementioned issues, this utility model employs the following technical solution: a vacuum casting device for speaker housings, comprising a casting chamber, a limiting frame, a vacuum tube, and a feeding tube. The limiting frame is fixedly connected to the casting chamber, the vacuum tube is connected to the casting chamber, and the feeding tube is fixedly connected to and communicates with the casting chamber. The device also includes a fixed base, a storage cylinder, a feeding cylinder, a rotating shaft, a feeding block, and a motor. The fixed base is fixedly connected to the casting chamber, the storage cylinder is fixedly connected to the fixed base, and the feeding cylinder is fixedly connected to the fixed base. The feeding cylinder communicates with the storage cylinder and the feeding tube. A motor is mounted on the feeding cylinder, and a rotating shaft is mounted on the motor's output shaft via a coupling. A feeding block is fixedly connected to the rotating shaft, and the feeding block rotates within the feeding cylinder.

[0007] As a preferred technical solution of this utility model, it also includes an air storage tank, a connecting pipe, an air bag, and an air pump. Two air storage tanks are installed in the casting chamber, an air pump is installed on the air storage tank, a connecting pipe is connected to the air pump, the connecting pipe passes through the limiting frame, and an air bag is connected between the two connecting pipes.

[0008] As a preferred technical solution of this utility model, it also includes an electric guide rail, an electric slider, a protective cover, a sliding plate, and a guide rod. Two electric guide rails are installed in the casting chamber, and an electric slider is installed inside the electric guide rail. The electric slider slides on the electric guide rail, and a protective cover is installed on the electric slider. Four guide rods are fixedly connected in the casting chamber, and two sliding plates are fixedly connected to the protective cover. The sliding plates slide on adjacent guide rods.

[0009] As a preferred technical solution of this utility model, it also includes protective doors, with two protective doors hinged on the casting chamber.

[0010] As a preferred technical solution of this utility model, the material block is semi-circular.

[0011] As a preferred technical solution of this utility model, a handle is fixedly connected to the protective door.

[0012] Compared with the prior art, the present invention has the following technical effects: 1. By starting the motor, the output shaft of the motor drives the rotating shaft and the feeding block to move. The feeding block no longer blocks the channel between the feeding cylinder and the storage cylinder. At the same time, the feeding block blocks the channel between the feeding cylinder and the feeding pipe, so that a certain amount of material flows from the storage cylinder into the feeding cylinder, ensuring that the amount of material injected into the mold each time is consistent, thereby achieving the effect of quantitative control, reducing waste of residual material, and avoiding defects such as shrinkage cavities and cold shuts caused by material fluctuations.

[0013] 2. By starting two air pumps, the air pumps draw gas from the air tank and input the gas into the air bag through the connecting pipe. The air bag then expands and compresses the mold, thereby keeping the mold in the center of the limiting frame and preventing the mold from shifting during material feeding.

[0014] 3. By activating the two electric guide rails, the electric guide rails drive the electric sliders on them to move inward. The electric sliders drive the protective cover and the slide plate to move inward. The guide rod plays a guiding role, so that the two protective covers cover the material feeding area, thereby preventing liquid raw materials from splashing out. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the casting chamber, protective door, and limiting frame components of this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the components of this utility model, including the fixing base, storage cylinder, and feeding cylinder.

[0018] Figure 4 This is a three-dimensional cross-sectional view of the components of this utility model, including the rotating shaft, the feeding block, and the motor.

[0019] Figure 5 This is a three-dimensional structural diagram of the components of this utility model, including the gas storage tank, connecting pipe, and air bladder.

[0020] Figure 6 This is a three-dimensional structural diagram of the electric guide rail, electric slider, and protective cover components of this utility model.

[0021] Figure 7 This is a three-dimensional cross-sectional view of the protective cover, electric slider, and guide rod components of this utility model.

[0022] The markings in the diagram are as follows: 1-Casting chamber, 2-Protective door, 3-Limiting frame, 4-Vacuum tube, 5-Feeding tube, 6-Fixed seat, 7-Storage cylinder, 8-Feeding cylinder, 9-Rotating shaft, 10-Feeding block, 11-Motor, 12-Air tank, 13-Connecting pipe, 14-Airbag, 15-Air pump, 16-Electric guide rail, 17-Electric slider, 18-Protective cover, 19-Slide plate, 20-Guide rod. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the scope of protection and application of the present invention.

[0024] Example 1: A vacuum casting apparatus for speaker housings, see [reference] Figures 1-7 As shown, the system includes a casting chamber 1, a limiting frame 3, a vacuum tube 4, and a feeding tube 5. The limiting frame 3 is welded to the bottom of the casting chamber 1. The vacuum tube 4 is connected to the right side of the casting chamber 1. The feeding tube 5 is fixedly connected and connected to the upper part of the casting chamber 1. The limiting frame 3 is located below the feeding tube 5. The system also includes a fixed base 6, a storage cylinder 7, a feeding cylinder 8, a rotating shaft 9, a feeding block 10, and a motor 11. The fixed base 6 is welded to the top of the casting chamber 1. The storage cylinder 7 is fixedly connected to the fixed base 6. The feeding cylinder 8 is fixedly connected to the lower part of the fixed base 6. The feeding cylinder 8 is located below the storage cylinder 7 and is connected to the storage cylinder 7 and the feeding tube 5. The motor 11 is bolted to the left side of the feeding cylinder 8. The rotating shaft 9 is mounted on the output shaft of the motor 11 through a coupling. The feeding block 10 is fixedly connected to the rotating shaft 9 and rotates inside the feeding cylinder 8.

[0025] See Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, it also includes a protective door 2. The protective door 2 is symmetrically hinged on the left and right sides of the front side of the casting chamber 1, and a glass window is embedded in the protective door 2.

[0026] See Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, a handle is fixedly connected to the protective door 2 to facilitate opening the protective door 2.

[0027] See Figure 4 As shown, the feed block 10 is semi-circular.

[0028] When using this device, the vacuum tube 4 needs to be connected to the vacuum machine, the mold is placed in the limiting frame 3 in the casting chamber 1, and the protective door 2 is closed. Then, the vacuum machine is started to remove the air in the casting chamber 1, and the liquid raw material is injected into the storage cylinder 7. After loading an appropriate amount of liquid raw material, the motor 11 is started. The output shaft of the motor 11 drives the rotating shaft 9 and the feeding block 10 to move. The feeding block 10 no longer blocks the channel between the feeding cylinder 8 and the storage cylinder 7. At the same time, the feeding block 10 blocks the channel between the feeding cylinder 8 and the feeding tube 5, so that a certain amount of material flows from the storage cylinder 7 into the feeding cylinder 8, ensuring that the amount of material injected into the mold is consistent each time, thereby achieving a quantitative effect, reducing waste of residual material, and avoiding defects such as shrinkage cavities and cold shuts caused by material fluctuations. When the feeding block 10 blocks the channel between the feeding cylinder 8 and the storage cylinder 7, the motor 11 is turned off to stop feeding, and the liquid raw material in the mold is allowed to cool and solidify.

[0029] Example 2: Based on Example 1, refer to Figure 1 and Figure 5 As shown, it also includes an air tank 12, a connecting pipe 13, an air bag 14 and an air pump 15. The air tank 12 is symmetrically installed on the left and right sides of the bottom of the casting chamber 1. The air pump 15 is installed on the air tank 12. The connecting pipe 13 is connected to the air pump 15. The connecting pipe 13 passes through the limiting frame 3. The air bag 14 is connected between the two connecting pipes 13.

[0030] When the mold is placed in the limiting frame 3, the limiting frame 3 is located in the air bladder 14. Then, by activating two air pumps 15, the air pumps 15 draw gas from the air storage tank 12, so that the gas is input into the air bladder 14 through the connecting pipe 13. The air bladder 14 expands and squeezes to fix the mold, thereby ensuring that the mold is located in the center of the limiting frame 3 and preventing the mold position from shifting when adding material. This ensures that all liquid raw materials enter the mold cavity. After the liquid raw materials cool and solidify, the air pumps 15 are controlled to draw gas from the air bladder 14 through the connecting pipe 13 and return it to the air storage tank 12. Then, the mold can be removed for demolding.

[0031] See Figure 1, Figure 6 and Figure 7 As shown, it also includes an electric guide rail 16, an electric slider 17, a protective cover 18, a sliding plate 19, and a guide rod 20. The electric guide rail 16 is symmetrically installed on the top of the casting chamber 1 by bolt connection. The electric slider 17 is installed inside the electric guide rail 16 and slides on the electric guide rail 16. The protective cover 18 is installed on the electric slider 17. The guide rod 20 is symmetrically installed on the left and right sides of the top of the casting chamber 1 by welding. Two sliding plates 19 are fixedly connected to the protective cover 18 and slide on the adjacent guide rod 20.

[0032] Before material unloading is required, the two electric guide rails 16 are activated. The electric guide rails 16 drive the electric sliders 17 on their own to move inward. The electric sliders 17 drive the protective cover 18 and the slide plate 19 to move inward. The guide rod 20 plays a guiding role, so that the two protective covers 18 cover the unloading area, thereby preventing liquid raw materials from splashing out and avoiding contamination of the electronic components in the casting chamber 1.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A vacuum casting apparatus for a speaker housing, comprising a casting chamber (1), a limiting frame (3), a vacuum tube (4), and a feeding pipe (5), wherein the limiting frame (3) is fixedly connected inside the casting chamber (1), the vacuum tube (4) is connected to the casting chamber (1), and the feeding pipe (5) is fixedly connected to and communicates with the casting chamber (1), characterized in that: It also includes a fixed base (6), a storage cylinder (7), a discharge cylinder (8), a rotating shaft (9), a discharge block (10), and a motor (11). The fixed base (6) is fixedly connected to the casting chamber (1), the storage cylinder (7) is fixedly connected to the fixed base (6), the discharge cylinder (8) is fixedly connected to the fixed base (6), the discharge cylinder (8) is connected to the storage cylinder (7) and the discharge pipe (5), the motor (11) is installed on the discharge cylinder (8), the rotating shaft (9) is installed on the output shaft of the motor (11) through a coupling, the discharge block (10) is fixedly connected to the rotating shaft (9), and the discharge block (10) rotates inside the discharge cylinder (8).

2. The vacuum casting equipment for a speaker housing as described in claim 1, characterized in that: It also includes a gas storage tank (12), a connecting pipe (13), an air bag (14) and an air pump (15). Two gas storage tanks (12) are installed in the casting room (1). An air pump (15) is installed on the gas storage tank (12). A connecting pipe (13) is connected to the air pump (15). The connecting pipe (13) passes through the limiting frame (3). An air bag (14) is connected between the two connecting pipes (13).

3. The vacuum casting equipment for a speaker housing as described in claim 2, characterized in that: It also includes electric guide rails (16), electric sliders (17), protective covers (18), sliding plates (19) and guide rods (20). Two electric guide rails (16) are installed in the casting chamber (1). Electric sliders (17) are installed in the electric guide rails (16). The electric sliders (17) slide on the electric guide rails (16). Protective covers (18) are installed on the electric sliders (17). Four guide rods (20) are fixedly connected in the casting chamber (1). Two sliding plates (19) are fixedly connected on the protective covers (18). The sliding plates (19) slide on the adjacent guide rods (20).

4. The vacuum casting equipment for a speaker housing as described in claim 3, characterized in that: It also includes protective doors (2), and two protective doors (2) are hinged on the casting room (1).

5. The vacuum casting equipment for a speaker housing as described in claim 4, characterized in that: The material cutting block (10) is semi-circular.

6. The vacuum casting equipment for a speaker housing as described in claim 5, characterized in that: A handle is fixedly connected to the protective door (2).

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