Automatic metal silicon casting system

Abstract

The utility model discloses an automatic metal silicon casting system which comprises a working box and a middle casting ladle, the top of the middle casting ladle is communicated with a middle chute, a filter screen is arranged in the middle casting ladle, a slag discharge pipe is arranged on the middle casting ladle on the upper side of the filter screen, and a casting pipe is arranged at the bottom of the middle casting ladle. A flow control mechanism is installed on the casting pipe, a lifting mechanism is arranged in the working box, a conveying roller mechanism connected with the lifting mechanism is arranged above the working box, a casting mold is movably placed on the conveying roller mechanism and located below the casting pipe, and discharging roller mechanisms are arranged on the positions, on the two sides of the conveying roller mechanism, of the working box. And a cooling assembly is mounted in the working box below the discharging roller mechanism. The device not only can realize accurate control on the silicon liquid casting amount and improve the casting quality, but also can improve the casting efficiency, can avoid the phenomenon of silicon liquid splashing and can reduce the waste of silicon liquid.

Description

Technical Field

[0001] This utility model belongs to the field of metallurgical processing technology, specifically relating to an automatic silicon casting system. Background Technology

[0002] Metallic silicon is a gray metallic element with a metallic luster. Its main chemical component is Si. It is chemically stable and possesses high electrical and thermal conductivity as well as corrosion resistance. Due to its excellent physical and chemical properties, it is widely used in electronics, metallurgy, chemical engineering, and other fields. The processing technology of metallic silicon includes melting, casting, molding, and surface treatment. Casting involves melting metallic silicon and then pouring the molten silicon into a pre-designed mold. Currently, the casting equipment used for metallic silicon casting includes an intermediate casting ladle and a support frame. The support frame is equipped with a lifting mechanism, which moves the intermediate casting ladle up and down. The molten silicon is then injected into the mold through the casting pipe on the intermediate casting ladle. This intermediate casting ladle structure has the following shortcomings in the process of casting molten silicon: First, there is no flow control mechanism on the casting pipe, and the casting volume is controlled solely by the experience of the workers. This casting method makes it difficult to accurately control the casting volume, which will affect the quality of the cast product. Second, the lifting mechanism controls the up and down movement of the casting ladle. The intermediate casting ladle is heavy, and a large driving force is required to ensure the movement of the intermediate casting ladle, resulting in low production efficiency. In addition, there is silicon splashing during the casting process, causing silicon waste. Therefore, it is an objective need to develop an automatic silicon casting system with a reasonable structure, easy control of casting volume, improved casting efficiency, and avoidance of silicon liquid waste. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic silicon casting system with a reasonable structure, easy control of casting volume, improved casting efficiency, and avoidance of silicon liquid waste.

[0004] The purpose of this utility model is achieved as follows: it includes a working box and a middle casting ladle installed above the working box. The top of the middle casting ladle is connected to a middle chute. A filter screen is installed inside the middle casting ladle. A slag discharge pipe is installed on the middle casting ladle above the filter screen. A slag discharge valve is installed on the slag discharge pipe. A casting pipe is installed at the bottom of the middle casting ladle. A flow control mechanism is installed on the casting pipe. A lifting mechanism is installed inside the working box. A conveying roller mechanism connected to the lifting mechanism is installed above the working box. A casting mold is movably placed on the conveying roller mechanism. The casting mold is located below the casting pipe. Discharge roller mechanisms are installed on the working boxes on both sides of the conveying roller mechanism. A cooling component is installed in the working box below the discharge roller mechanism.

[0005] Compared with existing technologies, the advantages of this device are as follows: First, this device optimizes the structure of the intermediate casting ladle. The filter screen installed inside the intermediate casting ladle can filter the silicon liquid, reducing the impurity content and preventing clogging of the casting pipe. The flow control mechanism can control the flow rate of the silicon liquid in the casting pipe, controlling the downward flow speed and flow rate of the silicon liquid, which can achieve precise control of the silicon liquid casting volume and improve the casting quality. Second, this device fixes the intermediate casting ladle above the working box, and the casting outlet position of the casting pipe is fixed. During casting, the lifting structure drives the conveyor roller structure and the casting mold to move upward, completing the casting process. Then, the lifting mechanism drives the conveyor roller structure and the casting mold to move downwards. The lifting mechanism moves the casting mold up and down to shorten the distance between it and the casting pipe. This reduces the driving force of the lifting mechanism, ensures the smooth movement of the casting mold, improves casting efficiency, and avoids splashing of molten silicon, reducing waste. At the same time, the transmission roller mechanism can alternately transfer the casting mold filled with molten silicon to the discharge roller mechanism. The cooling component cools the casting mold, accelerating the cooling speed and further improving casting efficiency. It has the advantages of reasonable structure and stable operation, and is easy to promote and use. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0007] Figure 2 This is a schematic diagram of the flow control mechanism in this utility model;

[0008] Figure 3 This is a schematic diagram of the lifting mechanism 5 in this utility model;

[0009] In the diagram: 1-Working box, 2-Intermediate casting ladle, 21-Filter screen, 22-Slag discharge pipe, 23-Insulation layer, 24-Insulation cotton, 3-Casting pipe, 31-First motor, 32-Drive gear, 33-Moving plate, 34-Gear plate, 35-Drive shaft, 36-Limiting plate, 37-Scraper, 38-Guide strip, 4-Intermediate chute, 5-Lifting mechanism, 51-Fixed pipe, 52-Rotating pipe, 53-Drive screw, 54-Second motor, 55-Drive gear, 56-Driven gear, 6-Transfer roller mechanism, 7-Casting mold, 8-Discharge roller mechanism, 9-Cooling fan, 10-Cooling box, 11-Air inlet pipe. Detailed Implementation

[0010] The present invention will be further described below with reference to the accompanying drawings, but this description is not intended to limit the present invention in any way. Any changes or improvements made based on the teachings of the present invention shall fall within the protection scope of the present invention.

[0011] like Figures 1-3As shown, this utility model includes a working box 1 and an intermediate casting ladle 2 installed above the working box 1. The top of the intermediate casting ladle 2 is connected to the intermediate chute 4. The intermediate casting ladle 2 is characterized by: a filter screen 21 inside, a slag discharge pipe 22 on the upper side of the filter screen 21, a slag discharge valve on the slag discharge pipe 22, a casting pipe 3 at the bottom of the intermediate casting ladle 2, a flow control mechanism installed on the casting pipe 3, a lifting mechanism 5 inside the working box 1, a conveying roller mechanism 6 connected to the lifting mechanism above the working box 1, a casting mold 7 movably placed on the conveying roller mechanism 6, the casting mold 7 located below the casting pipe 3, and discharge roller mechanisms 8 on both sides of the working box 1 on the conveying roller mechanism 6. A cooling assembly is installed inside the working box 1 below the discharge roller mechanism 8.

[0012] The working process of this device is as follows: After smelting, the molten silicon enters the intermediate casting ladle 2 through the intermediate chute 4. Then, the casting mold 7 is placed on the conveyor roller mechanism 6. The lifting mechanism 5 is activated, causing the conveyor roller mechanism 6 and the casting mold 7 to move upwards. When the casting mold 7 is directly below the casting pipe 3, the flow control mechanism is activated. The molten silicon entering the intermediate casting ladle 2 is filtered by the filter screen 21 and flows downwards into the casting pipe 3. The molten silicon in the casting pipe 3 can then be injected into the casting mold 7. When the casting mold 7 is full of molten silicon, the flow control mechanism is closed. The lifting mechanism 5 causes the conveyor roller mechanism 6 and the casting mold 7 to move downwards. When they are level with the discharge roller mechanism 8, the discharge roller mechanism 8 and the conveyor roller mechanism 6 are activated. The conveyor roller mechanism 6 then transfers the casting mold 7 to the discharge roller mechanism 8 on one side. The casting mold 7 then enters the intermediate casting ladle 2. When the mold 7 is filled with molten silicon, the cooling component will cool it down, accelerating the cooling speed and improving the casting efficiency. The conveyor roller mechanism 6 is equipped with discharge roller mechanisms 8 on both sides. The conveyor roller mechanism 6 can alternately transfer the mold 7 filled with molten silicon to the discharge roller mechanism 8. The two sets of discharge roller mechanisms 8 are used alternately to ensure that the conveyor roller mechanism 6 and the mold 7 can continuously cast molten silicon, which can further improve production efficiency. This device uses the lifting mechanism 5 to drive the mold 7 to move up and down to shorten the distance between it and the casting pipe 3. This can reduce the driving force of the lifting mechanism, ensure the smooth movement of the mold 7, improve casting efficiency, and also avoid the phenomenon of molten silicon splashing, reducing the waste of molten silicon. After the filter screen 21 has been used for a period of time, the slag discharge valve on the slag discharge pipe 22 can be opened to discharge the filtered slag from the slag discharge pipe 22.

[0013] Furthermore, the flow control mechanism includes a first motor 31, a drive gear 32, a movable plate 33, and a toothed plate 34. The first motor 31 is a structure used in the prior art, and finished products are directly purchased according to the power required. A groove is provided on one side of the casting pipe 3. One end of the movable plate 33 passes through the groove and extends into the interior of the casting pipe 3. The toothed plate 34 is installed at the other end of the movable plate 33 located outside the casting pipe 3. The first motor 31 is installed on the outside of the casting pipe 3. A transmission shaft 35 is installed on the first motor 31. The drive gear 32 is installed on the transmission shaft 35 and meshes with the toothed plate 34. A limit plate 36 is vertically installed at the end of the toothed plate 34. When it is necessary to control the amount of silicon liquid poured into the casting pipe 3, the first motor 31 is turned on first. The first motor 31 drives the drive gear 32 to rotate forward or backward through the transmission shaft 35. During rotation, the toothed plate 34 and the movable plate 33 can be driven to move back and forth. By controlling the gap between the movable plate 33 and the casting pipe 3, the casting volume and flow rate of the molten silicon can be controlled. After the casting pipe 3 is completed, the movable plate 33 is controlled by the first motor 31, the drive gear 32 and the toothed plate 34 to perform a movable seal on the casting pipe 3. Preferably, a scraper 37 is installed in the casting pipe 3 above the movable plate 33. The scraper can prevent the molten silicon from scraping off the molten silicon remaining on the movable plate. Guide strips 38 are installed on both sides of the movable plate 33. The side wall of the casting pipe 3 is provided with guide grooves that match the guide strips 38. The guide strips 38 are slidably installed in the guide grooves. The guide strips 38 have a guiding function, which can ensure that the movable plate 33 can always maintain a straight line movement in the casting pipe 3, and ensure the stability of the reciprocating movement of the movable plate 33.

[0014] Furthermore, the lifting mechanism 5 includes a fixed tube 51, a rotating tube 52, a transmission screw 53, and a second motor 54. The second motor 54 is a structure used in the prior art, and a finished product can be directly purchased according to the power required. The fixed tube 51 is fixedly installed in the lower part of the working box 1, and the rotating tube 52 is rotatably installed in the upper end of the fixed tube 51. The inner wall of the rotating tube 52 is machined with internal threads. The lower end of the transmission screw 53 is screwed into the rotating tube 52, and the upper end of the transmission screw 53 extends to the top of the working box 1 and is connected to the conveying roller mechanism 6. The second motor 54... Installed inside the work box 1, the output shaft of the second motor 54 is equipped with a drive gear 55, and the outer wall of the rotating tube 52 is equipped with a driven gear 56 that meshes with the drive gear 55. When in use, the second motor 54 is turned on, and the second motor 54 drives the drive gear 55 to rotate. During the rotation of the drive gear 55, it can drive the driven gear 56 and the rotating tube 52 to rotate. During the rotation of the rotating tube 52, the transmission screw 53 can move up and down along the rotating tube 52. The up and down movement of the transmission screw 53 can drive the conveyor roller mechanism 6 and the casting mold 7 to move up and down.

[0015] Furthermore, the conveying roller mechanism 6 includes a support and multiple drive rollers. The top surface of the support is machined with a downwardly recessed mounting groove. The multiple drive rollers are rotatably mounted on the mounting groove at equal intervals. A third motor connected to the drive rollers is mounted on the support. The third motor is not shown in the attached drawings. The third motor is existing technology and can be purchased directly as a finished product according to the usage requirements. The bottom surface of the support is fixedly connected to the transmission screw 53. The third motor is connected to one of the drive rollers. The third motor drives the drive roller to rotate, which in turn drives the casting mold 7 to move towards the discharge roller mechanism 8.

[0016] Furthermore, the discharge roller mechanism 8 includes a support frame and multiple discharge rollers. The support frame is mounted on both sides of the working box 1, and the multiple discharge rollers are rotatably mounted on the support frame at equal intervals. A fourth motor connected to the discharge rollers is mounted on the support frame. The fourth motor is not shown in the attached drawings. The fourth motor is existing technology and can be purchased directly as a finished product according to the needs of use. The fourth motor drives the discharge rollers to rotate, which can transfer the casting mold 7 on the conveyor roller mechanism 6 to the conveyor roller for cooling.

[0017] Furthermore, the cooling assembly includes a cooler 9 and a cooling box 10. Multiple cooling holes are evenly distributed on the top surface of the working box 1 below the discharge roller mechanism 8. The cooling box 10 is installed inside the working box 1 outside the cooling holes. An air inlet pipe 11 is installed on the cooling box 10, and a cooler 9 is installed on the air inlet pipe 11. The cooler 9 is a structure used in the prior art. The air entering the air inlet pipe 11 is cooled by the cooler 9 and then enters the cooling box 10. It is then dissipated upward through the cooling holes. The dissipated cold air can cool and lower the temperature of the casting mold 7.

[0018] Furthermore, in order to prevent the temperature of the molten silicon entering the intermediate casting ladle 2 from dropping, which would affect the flow rate and casting quality, an insulation layer 23 is provided on the outer side of the intermediate casting ladle 2 at intervals, and the space between the insulation layer 23 and the intermediate casting ladle 2 is filled with insulation cotton 24.

Claims

1. An automatic silicon casting system, comprising a work box (1) and an intermediate casting ladle (2) installed above the work box (1), wherein the top of the intermediate casting ladle (2) is connected to an intermediate chute (4), characterized in that: The intermediate casting ladle (2) is equipped with a filter screen (21) inside. A slag discharge pipe (22) is provided on the intermediate casting ladle (2) above the filter screen (21). A slag discharge valve is provided on the slag discharge pipe (22). A casting pipe is provided at the bottom of the intermediate casting ladle (2). A flow control mechanism is installed on the casting pipe. A lifting mechanism (5) is provided inside the working box (1). A conveying roller mechanism (6) connected to the lifting mechanism is provided above the working box (1). A casting mold (7) is movably placed on the conveying roller mechanism (6). The casting mold (7) is located below the casting pipe. A discharge roller mechanism (8) is provided on the working boxes (1) on both sides of the conveying roller mechanism (6). A cooling component is installed in the working box (1) below the discharge roller mechanism (8).

2. The automatic silicon casting system according to claim 1, characterized in that: The flow control mechanism includes a first motor (31), a drive gear (32), a movable plate (33), and a toothed plate (34). A groove is provided on one side of the casting pipe. One end of the movable plate (33) passes through the groove and extends into the interior of the casting pipe. The toothed plate (34) is installed on the other end of the movable plate (33) located outside the casting pipe. The first motor (31) is installed on the outside of the casting pipe. A transmission shaft (35) is installed on the first motor (31). The drive gear (32) is installed on the transmission shaft (35) and meshes with the toothed plate (34). A limit plate (36) is vertically installed at the end of the toothed plate (34).

3. The automatic silicon casting system according to claim 2, characterized in that: A scraper (37) is installed inside the casting pipe above the movable plate (33). Guide strips (38) are installed on both sides of the movable plate (33). A guide groove matching the guide strip (38) is provided on the side wall of the casting pipe. The guide strip (38) is slidably installed in the guide groove.

4. The automatic silicon casting system according to claim 1, characterized in that: The lifting mechanism (5) includes a fixed tube (51), a rotating tube (52), a transmission screw (53), and a second motor (54). The fixed tube (51) is fixedly installed in the lower part of the working box (1). The rotating tube (52) is rotatably installed in the upper end of the fixed tube (51). The inner wall of the rotating tube (52) is machined with internal threads. The lower end of the transmission screw (53) is screwed into the rotating tube (52). The upper end of the transmission screw (53) extends to the top of the working box (1) and is connected to the conveying roller mechanism (6). The second motor (54) is installed in the working box (1). A drive gear (55) is installed on the output shaft of the second motor (54). A driven gear (56) that meshes with the drive gear (55) is installed on the outer wall of the rotating tube (52).

5. The automatic silicon casting system according to claim 1, characterized in that: The conveying roller mechanism (6) includes a support and multiple drive rollers. The top surface of the support is machined with a downwardly recessed mounting groove. The multiple drive rollers are rotatably mounted on the mounting groove at equal intervals. A third motor connected to the drive rollers is installed on the support. The bottom surface of the support is fixedly connected to the drive screw (53).

6. The automatic silicon casting system according to claim 1, characterized in that: The discharge roller mechanism (8) includes a support frame and multiple discharge rollers. The support frame is mounted on both sides of the working box (1), and the multiple discharge rollers are rotatably mounted on the support frame at equal intervals. A fourth motor connected to the discharge rollers is installed on the support frame.

7. The automatic silicon casting system according to claim 1, characterized in that: The cooling assembly includes a cooler (9) and a cooling box (10). Multiple cooling holes are evenly distributed on the top surface of the working box (1) below the discharge roller mechanism (8). The cooling box (10) is installed inside the working box (1) outside the cooling holes. An air inlet pipe (11) is installed on the cooling box (10), and a cooler (9) is installed on the air inlet pipe (11).

8. The automatic silicon casting system according to claim 1, characterized in that: The outer side of the intermediate casting ladle (2) is provided with a heat insulation layer (23), and the space between the heat insulation layer (23) and the intermediate casting ladle (2) is filled with heat insulation cotton (24).

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