Drum-type sand cleaning machine for cleaning sand shells of castings

Abstract

The utility model relates to the technical field of sand cleaning machines, in particular to a drum-type sand cleaning machine for cleaning a sand shell of a casting, which comprises a rack, the rack is rotatably connected with a drum seat box through a rotating shaft, and the rack is provided with an oil cylinder for driving the drum seat box to turn over in a vertical face. A roller is rotationally connected into the roller seat box through at least two rolling mechanisms, and the roller seat box is provided with a gear mechanism for driving the roller to rotate; the bottom end of the roller is in a pot shape, a large number of leakage holes facilitating sand leakage are densely formed in the bottom end of the roller, and a shovel plate enabling a casting to ascend is fixed to the inner wall of the roller. The overturning roller with the pot-shaped bottom end is adopted for containing the castings, feeding and discharging can be facilitated, the castings roll up and down in the rolling process of the roller, sand shells and adhered gravels on the surfaces of the castings are taken out in the mutual collision process of the castings, collision to the roller is reduced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of sand cleaning machines, in particular to a drum type sand cleaning machine used for removing sand shells of castings. Background Art

[0002] Castings cast by sand molds need to be cleaned up because the sand shell and sand grains adhere to the castings and are difficult to fall off by themselves. This is especially true for wax mold castings, which have a higher hardness of sand shell on the surface and are more adhered to the castings, making them even more difficult to clean. After the casting of wax mold castings is completed, the sand cleaning methods include vibrators, sand cleaning machines, and air hammers for cleaning parts; Patent CN103273048B - a casting sand cleaning machine that is easy to recycle, which has radial brush strips inside a rotating drum that can accommodate castings, and relies on the friction of the brush strips on the castings to clean the sand. Because the castings are usually heavy, they roll in the drum for a long time and hit the brush strips, which can easily cause deformation and wear of the yarn strips. In addition, the drum is a flat cylindrical shape, and the castings rarely collide with each other when rolling in the drum, so the sand cleaning efficiency is low, and it is not convenient for loading and unloading. Utility Model Content

[0003] The utility model aims to address the deficiencies of the prior art and to provide a drum-type sand cleaning machine for removing sand shells from castings. The drum adopts a drum that can be tilted up and down in a vertical plane, which is convenient for loading and unloading. The bottom of the drum is pot-shaped, which is more conducive to the castings colliding with each other when rolling in the rotating drum. While increasing the sand cleaning efficiency, it reduces the impact on the drum and improves the service life of the equipment.

[0004] The utility model solves the technical problem by adopting the following technical solution: a drum sand cleaning machine for removing sand shells of castings, comprising a frame, the frame being rotatably connected to a drum seat box via a rotating shaft, the frame being provided with an oil cylinder for driving the drum seat box to flip in a vertical plane, the drum seat box being rotatably connected to a drum via at least two rolling mechanisms, the drum seat box being provided with a gear mechanism for driving the drum to rotate; the bottom end of the drum is pot-shaped, and the bottom end of the drum is densely covered with a large number of leakage holes for facilitating the leakage of sand materials, and the inner wall of the drum is fixed with a shovel plate for lifting the casting.

[0005] Preferably, a partition is provided between the rolling mechanism and the leak hole at the top to prevent sand from entering the rolling mechanism, the partition is fixed to the roller seat box on all sides, and the gap between the inner hole of the partition and the roller is 5 to 20 mm.

[0006] Preferably, the rolling mechanism includes a raceway fixed to the outer circumference of the drum, and at least three ball seats evenly distributed around the outer circumference of the raceway and fixed to the drum seat box, and a steel ball is provided between the raceway and the ball seat to engage with both.

[0007] Preferably, the gear mechanism comprises a gear ring fixed to the drum and a gear meshing with the gear ring, and the gear is driven by a motor fixed to the drum seat box.

[0008] Preferably, the diameter of the leakage hole increases equidistantly from the pot-shaped bottom to the pot-shaped top of the drum, and the distance between two adjacent leakage holes increases equidistantly from the pot-shaped bottom to the pot-shaped top of the drum.

[0009] Preferably, three shovel plates are evenly distributed along the circumference of the drum, and the shovel plates are vertical plates welded to the inner wall of the drum, and the shovel plates form an angle with the symmetry plane in the height direction of the drum.

[0010] Preferably, the frame is provided with a sand material accumulation box below the drum, the bottom of the sand material accumulation box is inclined to the lower right, and a plurality of spliced ​​sealing plates engaged through slots are provided on the right side of the sand material accumulation box.

[0011] Preferably, a dust collecting air duct is provided above the sand material accumulation box, and the drum seat box extends to the dust collecting air duct, surrounding the lower chamfer of the pot-shaped drum seat box portion at the bottom end of the drum.

[0012] The beneficial effects of the utility model are as follows: a drum-type sand cleaning machine for removing sand shells from castings comprises a frame, the frame is rotatably connected to a drum seat box through a rotating shaft, the frame is provided with an oil cylinder for driving the drum seat box to flip in a vertical plane, a drum is rotatably connected to the drum seat box through at least two rolling mechanisms, the drum seat box is provided with a gear mechanism for driving the drum to rotate; the bottom end of the drum is pot-shaped, and the bottom end of the drum is densely covered with a large number of leakage holes for easy leakage of sand, and a shovel plate for raising the casting is fixed on the inner wall of the drum. The utility model adopts a drum with a tiltable bottom end in a pot shape to accommodate castings, which can facilitate loading and unloading. The castings are rolled up and down during the rolling of the drum, and the sand shells and adhered gravel on the surface of the castings are removed during the mutual collision, thereby reducing the collision with the drum and increasing the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a stereoscopic diagram of a drum-type sand cleaning machine for removing sand shells of castings of the utility model;

[0014] Figure 2 This is a front view of a drum-type sand cleaning machine for removing sand shells from castings according to the utility model;

[0015] Figure 3 This is a main sectional view of a drum-type sand cleaning machine for removing sand shells from castings according to the utility model;

[0016] Figure 4 yes Figure 2 AA section view.

[0017] Description of reference numerals:

[0018] 1 - frame, 2 - roller seat box, 3 - oil cylinder, 4 - rolling mechanism, 41 - raceway, 42 - ball seat, 43 - steel ball, 5 - roller, 51 - leakage hole, 52 - shovel plate, 6 - gear mechanism, 61 - gear ring, 62 - gear, 63 - motor, 7 - partition, 8 - sand storage box, 81 - sealing plate, 9 - dust collection air duct. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the scope of implementation of the present invention is not limited thereto.

[0020] like Figures 1 to 3 As shown, the drum sand cleaning machine for removing sand shells of castings of this embodiment includes a frame 1, the frame 1 is rotatably connected to a drum seat box 2 through a rotating shaft, the frame 1 is provided with a cylinder 3 for driving the drum seat box 2 to flip in a vertical plane, a drum 5 is rotatably connected to the drum seat box 2 through at least two rolling mechanisms 4, the drum seat box 2 is provided with a gear mechanism 6 for driving the drum 5 to rotate; the bottom end of the drum 5 is pot-shaped, and the bottom end of the drum 5 is densely covered with a large number of leakage holes 51 for facilitating the leakage of sand materials, and the inner wall of the drum 5 is fixed with a shovel plate 52 for raising the casting.

[0021] The present embodiment can be used for shelling and sand cleaning of newly cast castings. The drum 5 can be tilted up and overturned to facilitate loading and unloading. The upper end of the drum 5 is open and the bottom end is pot-shaped. When rotating to clean sand, the drum 5 is tilted up, that is, the open end faces upward and the pot-shaped bottom end is downward, so that the internal materials are mainly stored at the bottom end of the pot shape, and when the castings that are continuously pushed to a high position by the shovel plate 52 fall down, they mainly hit other castings, thereby increasing the mutual collision between castings and reducing the impact of castings on the drum 5, thereby improving the sand cleaning efficiency and reducing the wear on the drum 5.

[0022] Because the materials are mainly stored at the pot-shaped bottom of the drum 5, in order to increase the leakage of the peeled sand shells and sand particles, the diameter of the leakage hole 51 increases equidistantly from the pot-shaped bottom to the pot-shaped top of the drum 5, and the distance between two adjacent leakage holes 51 increases equidistantly from the pot-shaped bottom to the pot-shaped top of the drum 5.

[0023] In this embodiment, the roller 5 and the roller seat box 2 are connected in rolling manner through two parallel rolling mechanisms 4. Specifically, a grooved raceway 41 is fixed on the outer periphery of the roller 5, and five ball seats 42 are evenly arranged around the raceway 41 in the roller seat box 2. A steel ball 43 connected to the ball is embedded in the ball seat 42, and the other half of the steel ball 43 is accommodated in the raceway 41. Then, the roller 5 is driven to rotate by the gear mechanism 6, which includes a gear ring 61 fixed to the roller 5 and a gear 62 meshing with the gear ring 61, and the gear 62 is driven by a motor 63 fixed to the roller seat box 2.

[0024] In order to prevent sand from entering the rolling mechanism 4 and the gear mechanism 6, a partition 7 is provided between the rolling mechanism 4 and the leakage hole 51 at the top to prevent sand from entering the rolling mechanism 4. The partition 7 is fixed to the roller seat box 2 on all sides. The gap between the inner hole of the partition 7 and the roller 5 is 5 to 20 mm. If necessary, a brush or a curtain is provided in the gap between the inner hole of the partition 7 and the roller 5.

[0025] The frame 1 is provided with a sand material accumulation box 8 below the drum 5, the bottom of the sand material accumulation box 8 is tilted to the lower right, and a plurality of spliced ​​sealing plates 81 are provided on the right side of the sand material accumulation box 8 through the card slot, and a dust collecting air duct 9 is provided above the sand material accumulation box 8, and the drum seat box 2 extends to the dust collecting air duct 9; thus, the sand material collection is convenient and the workshop pollution is prevented. In order to avoid hindering the sand material from falling, the lower side of the pot-shaped drum seat box 2 section surrounding the bottom end of the drum 5 is chamfered.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, and for the convenience of describing the technical solution, the front, rear, left, right, top, middle, and bottom directions adopted are based on the settings in the accompanying drawings, rather than limiting the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. The drum sand cleaning machine used for removing sand shell of castings is characterized by: It includes a frame, which is rotatably connected to a roller seat box via a rotating shaft, the frame is provided with a cylinder for driving the roller seat box to flip in a vertical plane, the roller is rotatably connected to the roller seat box via at least two rolling mechanisms, and the roller seat box is provided with a gear mechanism for driving the roller to rotate; the bottom end of the roller is pot-shaped, and the bottom end of the roller is densely covered with a large number of leakage holes for facilitating the leakage of sand materials, and the inner wall of the roller is fixed with a shovel plate for raising the casting.

2. The drum sand cleaning machine for removing casting sand shell according to claim 1, characterized in that: A partition is provided between the rolling mechanism and the leak hole at the top to prevent sand from entering the rolling mechanism. The partition is fixed to the roller seat box on all sides. The gap between the inner hole of the partition and the roller is 5 to 20 mm.

3. The drum sand cleaning machine for removing casting sand shell according to claim 1, characterized in that: The rolling mechanism comprises a raceway fixed to the outer circumference of the drum, and at least three ball seats evenly distributed around the outer circumference of the raceway and fixed to the drum seat box. A steel ball is arranged between the raceway and the ball seats to engage with both.

4. The drum sand cleaning machine for removing casting sand shell according to claim 1, characterized in that: The gear mechanism includes a gear ring fixed to the drum and a gear meshed with the gear ring, and the gear is driven by a motor fixed to the drum seat box.

5. The drum sand cleaning machine for removing casting sand shell according to claim 1, characterized in that: The diameter of the leakage hole increases equidistantly from the pot-shaped bottom to the pot-shaped top of the drum, and the distance between two adjacent leakage holes increases equidistantly from the pot-shaped bottom to the pot-shaped top of the drum.

6. The drum sand cleaning machine for removing casting sand shell according to claim 1, characterized in that: Three shovel plates are evenly distributed along the circumference of the drum. The shovel plates are vertical plates welded to the inner wall of the drum, and the shovel plates form an angle with the symmetry plane in the height direction of the drum.

7. The drum sand cleaning machine for removing casting sand shell according to claim 1, characterized in that: The frame is provided with a sand material accumulation box below the drum, the bottom of the sand material accumulation box is inclined to the lower right, and a plurality of spliced ​​sealing plates engaged through slots are provided on the right side of the sand material accumulation box.

8. The drum sand cleaning machine for removing casting sand shell according to claim 7, characterized in that: A dust collecting air duct is arranged above the sand material accumulation box, and the drum seat box extends to the dust collecting air duct, surrounding the lower chamfer of the pot-shaped drum seat box part at the bottom end of the drum.

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