Shakeout device for casting workpieces

Abstract

The utility model provides a cast workpiece shakeout device which comprises a shell, the shell comprises a brush chamber and a sand blasting chamber, a row of lower brush rollers are arranged in the brush chamber, a row of upper brush rollers are arranged above the lower brush rollers, and the upper brush rollers and the lower brush rollers are arranged in a staggered mode. A conveying net belt is arranged in the sand blasting chamber and located below the lower brush roller, a plurality of sand blasting openings are formed in the upper portion of the conveying net belt, an air storage tank is fixedly connected to the bottom of the shell, an air pipe is fixedly connected to one end of the air storage tank, and the other end of the air pipe communicates with the sand blasting openings. A siphon is arranged in the shell, one end of the siphon is connected with the air pipe, and the other end of the siphon is arranged at the bottom of the shell. Sand shakeout is carried out in a conveying mode, and sand blasting treatment is carried out after rolling brushing, so that the sand shakeout efficiency is high, and the sand shakeout speed and quality are guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of casting technology, and particularly to a shakeout device for casting workpieces. Background Art

[0002] A sand mold is a cavity for a casting made of green sand, binder and other auxiliary materials during the casting production process. After pouring, it is necessary to clean the mold sand on the surface of the casting.

[0003] After waiting for the casting to cool, generally, tools are used manually to break the mold sand. Relevant shakeout equipment is also used. For example, the casting is placed in a vibrating device, and the shakeout operation is carried out by vibration. Usually, in order to avoid damage to the casting, it is necessary to control the vibration intensity. However, the mold sand attached to the surface of the casting cannot be cleaned thoroughly, and further manual treatment is required. Summary of the Invention

[0004] To solve the above problems, the present invention discloses a shakeout device for casting workpieces, including a housing. The housing includes a brush chamber and a sand blasting chamber. A row of lower brush rollers is arranged inside the brush chamber. An upper row of brush rollers is arranged above the lower brush rollers, and the upper and lower brush rollers are staggered. After the casting is demolded, it is pre-placed on the lower brush rollers. When the casting passes between the lower and upper brush rollers, the mold sand on the casting is removed. Further, both the upper and lower brush rollers are made of wire bristles.

[0005] A conveyor mesh belt is arranged in the sand blasting chamber. The conveyor mesh belt is located below the lower brush rollers. A plurality of sand blasting nozzles are arranged above the conveyor mesh belt. The bottom of the housing is fixedly connected with an air storage tank. One end of the air storage tank is fixedly connected with an air pipe, and the other end of the air pipe is communicated with the sand blasting nozzles. A siphon pipe is arranged inside the housing. One end of the siphon pipe is connected to the air pipe, and the other end is arranged at the bottom of the housing. After the casting passes through the brush chamber, it falls onto the conveyor mesh belt. At this time, the sand blasting nozzles perform sand blasting treatment on the casting to clean the mold sand on the surface of the casting. Finally, the casting is conveyed out from the other end of the housing.

[0006] Preferably, a fixed frame is arranged inside the brush chamber. The upper brush rollers are arranged on the fixed frame. The upper end of the housing is fixedly connected with a pneumatic cylinder. The lower end of the pneumatic cylinder extends with a telescopic rod, and the lower end of the telescopic rod is fixedly connected with the fixed frame. That is, when the pneumatic cylinder acts, the upper brush rollers can be lifted and lowered, that is, the distance between the upper and lower brush rollers can be controlled, so as to adapt to the shakeout operation of castings of different sizes. Further, the air pressure source of the pneumatic cylinder is the air storage tank.

[0007] Preferably, a second motor is fixedly connected to the side wall of the housing. The output end of the second motor is fixedly connected to the end of one of the lower brush rollers. All the lower brush rollers are connected by a chain. That is, when the second motor is started, the lower brush rollers are driven to rotate, so as to remove the molding sand on the surface of the casting.

[0008] A first motor is fixedly connected to the side wall of the housing. The output end of the first motor is fixedly connected to the conveyor roller drum on one side of the conveyor belt. When the first motor is started, the conveyor belt is driven to convey the casting.

[0009] Preferably, a filter screen is provided at the upper end of the sandblasting chamber, and an exhaust fan is provided below the filter screen. The gas in the sandblasting chamber is discharged upward, reducing the escape of the ejected molding sand from the end of the housing.

[0010] Preferably, an air compressor is fixedly connected to the bottom of the housing. The output end of the air compressor is communicated with the air storage tank. A filter box is arranged inside the housing, and one end of the siphon extends into the filter box. The air compressor compresses the gas into the air storage tank. At the same time, the filter box blocks the agglomerated molding sand to avoid blocking the siphon. Further, if necessary, a vibration device can be added to the filter box to make the molding sand enter the filter box.

[0011] Preferably, the bottom of the housing is arranged as an inclined surface, and a discharge pipe is arranged at the bottom of the inclined surface. A plurality of support columns are fixedly connected to the bottom of the housing. It is used to send out the molding sand.

[0012] The beneficial effects of the present invention are as follows:

[0013] 1. There are lower brush rollers, upper brush rollers, sandblasting ports, etc., which can perform secondary sand falling treatment on the casting to ensure the quality of sand falling. At the same time, the conveying method is adopted, that is, the casting is put in from the opening at one end of the housing and directly sent out after being processed at the other end. The continuous operation method greatly improves the efficiency of sand falling.

[0014] 2. A filter screen is provided, and the gas in the sandblasting chamber can be sent out from the filter screen, which is beneficial to maintaining the quality of the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front three-dimensional schematic diagram of the present invention;

[0016] Figure 2 is the rear three-dimensional schematic diagram of the present invention;

[0017] Figure 3 is the side perspective schematic diagram of the present invention.

[0018] LIST OF REFERENCE NUMERALS:

[0019] 1. Lower brush roller; 2. Fixed frame; 3. Upper brush roller; 4. Housing; 5. Support column; 6. Pneumatic cylinder; 7. Filter screen; 8. Conveyor mesh belt; 9. First motor; 10. Second motor; 11. Air pipe; 12. Air storage tank; 13. Air compressor; 14. Siphon tube; 15. Filter box; 16. Discharge pipe; 17. Sandblasting port. Detailed implementation manners

[0020] The present invention will be further clarified below in conjunction with the accompanying drawings and specific implementation manners. It should be understood that the following specific implementation manners are only used to illustrate the present invention and not to limit the scope of the present invention. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0021] In conjunction with Figures 1 to 3 As shown, a shakeout device for casting workpieces includes a housing 4, the housing 4 is similar to a cuboid structure, and openings are provided at both ends of the housing 4. The housing 4 includes a brush chamber and a sandblasting chamber. A row of lower brush rollers 1 are arranged inside the brush chamber, and a row of upper brush rollers 3 are arranged above the lower brush rollers 1, and the upper brush rollers 3 and the lower brush rollers 1 are arranged staggeredly. The bristles of the upper brush rollers 3 and the lower brush rollers 1 are made of steel wire. That is, the casting is placed on the lower brush tube 1 through the opening on one side of the housing 4, and passes through the rolling brushes of the upper brush rollers 3 and the lower brush rollers 1, so as to remove the mold sand on the surface of the casting as much as possible.

[0022] A conveyor mesh belt 8 is arranged in the sandblasting chamber to facilitate the falling of the mold sand. The conveyor mesh belt 8 is located below the lower brush rollers 1 to facilitate the casting to fall on the conveyor mesh belt 8. A plurality of sandblasting ports 17 are arranged above the conveyor mesh belt 8. The number and distribution of the sandblasting ports 17 can be processed according to the shakeout effect. The bottom of the housing 4 is fixedly connected with an air storage tank 12. One end of the air storage tank 12 is fixedly connected with an air pipe 11, and the other end of the air pipe 11 is communicated with the sandblasting ports 17. That is, the gas in the air storage tank 12 is sent out from the sandblasting ports 17 through the air pipe 11. A siphon tube 14 is arranged inside the housing 4. One end of the siphon tube 14 is connected to the air pipe 11, and the other end is arranged at the bottom of the housing 4. Under the action of negative pressure, one end of the siphon tube 14 sucks in the mold sand, enters the air pipe 11, and finally is sent out from the sandblasting ports 17 and blown onto the surface of the casting to realize the treatment of the surface of the casting.

[0023] A fixed frame 2 is arranged inside the brush chamber. The fixed frame 2 is rectangular. The upper brush roller 3 is arranged on the fixed frame 2, and the upper brush roller 3 and the fixed frame 2 are rotatably matched. The upper end of the housing 4 is fixedly connected with a pneumatic cylinder 6. A telescopic rod is extended from the lower end of the pneumatic cylinder 6, and the lower end of the telescopic rod is fixedly connected to the fixed frame 2. When the pneumatic cylinder 6 works, the telescopic rod extends or retracts, thereby controlling the distance between the upper brush roller 3 and the lower brush roller 1, so as to be suitable for the processing of castings of different sizes.

[0024] The side wall of the housing 4 is fixedly connected with a second motor 10, the output end of the second motor 10 is fixedly connected to the end of one of the lower brush rollers 1, and all the lower brush rollers 1 are connected by a chain. The second motor 10 is started to drive the lower brush roller 1 to rotate, so as to realize the rolling brushing of the casting, and during the rolling brushing process, the workpiece is continuously transported while rotating, so that not only the key curved surface of the casting can be rolled and brushed, but also the casting can be sent to the sandblasting room.

[0025] The side wall of the housing 4 is fixedly connected with a first motor 9, and the output end of the first motor 9 is fixedly connected to a conveying roller drum on one side of the conveying mesh belt 8. The first motor 9 is started to drive the conveying mesh belt 8 to rotate, and the casting on it is transported to another opening of the housing 4 for delivery.

[0026] A filter screen 7 is provided at the upper end of the sandblasting room, and an exhaust fan is provided below the filter screen 7. To prevent the influence of the molding sand on the exhaust fan, a filtering structure is also required to be provided below the exhaust fan. The purpose of providing the filter screen 7 and the exhaust fan at the same time is that the gas in the sandblasting room is sent out through the filter screen 7, and the amount of molding sand escaping at the opening is small, so that the environmental quality of the working space can be maintained.

[0027] An air compressor 13 is fixedly connected to the bottom of the housing 4, and the output end of the air compressor 13 is connected to the air storage tank 12. The air compressor 13 compresses the air and stores it in the air storage tank 12. A filter box 15 is provided inside the housing 4, and one end of the siphon 14 extends to the inside of the filter box 15. To prevent the agglomerated molding sand from blocking the siphon 15, a vibration device can be provided in the filter box 15 so that sufficient molding sand can enter the filter box 15.

[0028] The bottom of the shell 4 is set as an inclined surface, and a discharge pipe 16 is arranged at the bottom of the inclined surface. The inclined ground is conducive to the discharge of molding sand from the discharge pipe 16. A plurality of support columns 5 are fixedly connected to the bottom of the shell 4 for supporting the device and for facilitating the receipt of molding sand from the discharge pipe 16.

[0029] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above technical features.

Claims

1. A sand dropping device for casting workpieces, characterized in that: The invention comprises a shell (4), wherein the shell (4) comprises a brush chamber and a sandblasting chamber, wherein a row of lower brush rollers (1) are arranged inside the brush chamber, and a row of upper brush rollers (3) are arranged above the lower brush rollers (1), and the upper brush rollers (3) and the lower brush rollers (1) are arranged in a staggered manner; A conveyor mesh belt (8) is provided in the sandblasting chamber, the conveyor mesh belt (8) is located below the lower brush roller (1), a plurality of sandblasting ports (17) are provided above the conveyor mesh belt (8), a gas storage tank (12) is fixedly connected to the bottom of the shell (4), one end of the gas storage tank (12) is fixedly connected to an air pipe (11), the other end of the air pipe (11) is connected to the sandblasting port (17), and a siphon tube (14) is provided inside the shell (4), one end of the siphon tube (14) is connected to the air pipe (11), and the other end is provided at the bottom of the shell (4).

2. The sand-falling device for casting workpiece according to claim 1, characterized in that: A fixed frame (2) is arranged inside the brush chamber, the upper brush roller (3) is arranged on the fixed frame (2), the upper end of the shell (4) is fixedly connected to a pneumatic cylinder (6), the lower end of the pneumatic cylinder (6) is extended with a telescopic rod, and the lower end of the telescopic rod is fixedly connected to the fixed frame (2).

3. The sand-falling device for casting workpiece according to claim 1, characterized in that: A second motor (10) is fixedly connected to the side wall of the housing (4); an output end of the second motor (10) is fixedly connected to the end of one of the lower brush rollers (1); and all the lower brush rollers (1) are connected via a chain.

4. The sand-falling device for casting workpiece according to claim 1, characterized in that: A first motor (9) is fixedly connected to the side wall of the housing (4), and an output end of the first motor (9) is fixedly connected to a conveying roller drum on one side of the conveying mesh belt (8).

5. The sand dropping device for casting workpiece according to claim 1, characterized in that: A filter screen (7) is arranged at the upper end of the sandblasting chamber, and an exhaust fan is arranged below the filter screen (7).

6. The sand-falling device for casting workpiece according to claim 1, characterized in that: An air compressor (13) is fixedly connected to the bottom of the shell (4); an output end of the air compressor (13) is in communication with the air storage tank (12); a filter box (15) is provided inside the shell (4); and one end of the siphon tube (14) extends into the interior of the filter box (15).

7. The sand-falling device for casting workpiece according to claim 1, characterized in that: The bottom of the shell (4) is arranged as an inclined surface, and a discharge pipe (16) is arranged at the bottom of the inclined surface. A plurality of support columns (5) are fixedly connected to the bottom of the shell (4).

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