Sand outlet structure of sand mixer

Abstract

The utility model discloses a sand outlet structure of a sand mixer, which comprises a sealing plate (1), a driving device (2) and a sand outlet (4) arranged at the bottom of a sand mixer barrel (3), the sealing plate (1) is arranged on the lower surface of the bottom of the sand mixer barrel (3), the sealing plate (1) and the sand mixer barrel (3) form a horizontal moving pair, the area of the sealing plate (1) is larger than that of the sand outlet (4), and the driving device (2) is arranged on the driving device (2). The upper surface of the sealing plate (1) is attached to the lower surface of the bottom of the sand mixer barrel (3), the driving device (2) is installed at the bottom of the sand mixer barrel (3), connected with the sealing plate (1) and used for driving the sealing plate (1) to horizontally slide at the bottom of the sand mixer barrel (3), and the horizontal sliding of the sealing plate (1) is used for opening or closing the sand outlet (4). The sealing plate horizontally moves at the bottom of the sand mixer barrel to open or close the sand outlet, and the moving mode and the moving structure of the sand mixer barrel are simple.

Description

Technical Field

[0001] The utility model relates to a sand outlet structure of a sand mixer and belongs to the technical field of casting. Background Art

[0002] A sand mixer is one of the tools required in the casting field. It is used to evenly mix the components in the molding sand, and the mixed molding sand is discharged from the sand outlet. The Chinese utility model patent with application publication number CN219851978U discloses a sand outlet structure of a sand mixer, which includes a sealing plate, a driving mechanism and a sand outlet opened at the bottom of the sand mixer. A slide groove running through the inside and outside of the sand mixer is opened on the side of the sand mixer. The driving mechanism is arranged on the outside of the sand mixer, and the sealing plate passes through the slide groove. One end of the sealing plate located on the outside of the sand mixer is fixedly connected to the driving mechanism and is driven by the driving mechanism to rotate relative to the sand mixer. One end of the sealing plate located inside the sand mixer is in contact with the inner wall of the bottom of the sand mixer and is used to open and close the sand outlet as the sealing plate rotates. The sand outlet structure of this structure requires a chute to be opened at the bottom of the cylinder. The opening of the chute may allow the molding sand in the cylinder to be discharged from the chute, and the outlet is opened or closed by rotating the sealing plate. The upper and side parts of the sealing plate inside the cylinder are all molding sand, which has a large resistance to the rotation of the sealing plate. Therefore, the force required to rotate the sealing plate is large, and the structure used to rotate the sealing plate is also more complicated. Summary of the invention

[0003] The utility model aims to provide a sand outlet structure of a sand mixer, so as to solve the technical defect of the sand outlet structure of the sand mixer in the prior art that the structure is complicated.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is: a sand outlet structure of a sand mixer, including a sealing plate, a driving device and a sand outlet opened at the bottom of the sand mixer cylinder, the sealing plate is arranged on the lower surface of the bottom of the sand mixer cylinder, and forms a horizontal moving pair with the sand mixer cylinder, the area of ​​the sealing plate is larger than the area of ​​the sand outlet, and the upper surface of the sealing plate fits the lower surface of the bottom of the sand mixer cylinder, the driving device is installed at the bottom of the sand mixer cylinder and connected to the sealing plate, and is used to drive the sealing plate to slide horizontally at the bottom of the sand mixer cylinder, and the horizontal sliding of the sealing plate is used to open or close the sand outlet. The sealing plate in the utility model moves horizontally at the bottom of the sand mixer cylinder to open or close the sand outlet. Compared with the structure of the sealing plate rotating to open or close the sand outlet in the prior art, the structure of the sealing plate movement in the utility model is simpler, and the installation of the driving device is also simpler. In the utility model, the sealing plate is located outside the sand mixer cylinder. In addition to being subjected to the pressure of the molding sand in the vertical direction, there is no resistance generated by the molding sand in the moving direction of the sealing plate, which is more convenient for the movement of the sealing plate.

[0005] As a further improvement of the utility model, a guide rod is fixedly provided on both sides of the sand outlet on the outer surface of the bottom of the sand mixer barrel, the two guide rods are parallel and a guide groove is provided on each side facing each other on the two guide rods, the sealing plate is rectangular, and the two sides of the sealing plate are respectively located in the two guide grooves and can slide in the guide grooves. The utility model guides the movement of the sealing plate by providing a guide groove on the guide rod, and the guide rod also provides upward support for the sealing plate to prevent the sealing plate from falling downward. The sealing plate on both sides of the utility model is completely located in the guide groove between the two ends. Compared with the prior art, the contact surface between the sealing plate and the guide rod in the utility model is larger, and the deformation of the sealing plate during use is smaller.

[0006] As a further improvement of the utility model, the guide rod is L-shaped, and its top is fixed to the lower surface of the bottom of the sand mixer cylinder by welding. The guide rod in the utility model has a simple structure and a high connection strength with the bottom of the sand mixer cylinder.

[0007] As a further improvement of the utility model, the driving device is a driving cylinder, the cylinder body of the driving cylinder is installed at the bottom of the sand mixer barrel, and the piston rod of the driving cylinder is parallel to the guide rod, the sealing plate is connected to the piston rod of the driving cylinder, and the piston rod of the driving cylinder is telescopic to drive the sealing plate to slide in the guide groove. The utility model opens or closes the sand outlet by driving the sealing plate to move horizontally by the driving cylinder, which not only has a simple structure for moving the sealing plate, but also does not require manual pushing of the sealing plate to move. Compared with the prior art method of manually pulling to open or close the sand outlet, the utility model is more labor-saving.

[0008] As a further improvement of the utility model, a chamfer is provided at one end of the sealing plate away from the driving cylinder, and the chamfer forms a cutting edge at the edge of the sealing plate. The utility model provides a chamfer at the end of the sealing plate, which can scrape off the molding sand that may adhere to the lower surface of the sand mixer cylinder between the two guide rods, making it more convenient to move the sealing plate.

[0009] As a further improvement of the utility model, a connecting block is fixedly arranged on the lower surface of the sealing plate, the connecting block is located between the two guide rods, and the piston rod end of the driving cylinder is connected to the connecting block. The utility model arranges the connecting block on the sealing plate, which makes it more convenient to connect the driving cylinder and the sealing plate.

[0010] In summary, the beneficial effects of the utility model are as follows: the sealing plate in the utility model moves horizontally at the bottom of the sand mixer barrel to open or close the sand outlet, and the movement method itself and the structure for realizing the movement are relatively simple. The contact area between the sealing plate and the guide rod in the utility model is large, and the sealing plate is less likely to bend and deform. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0012] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle.

[0013] Among them: 1. Sealing plate; 2. Driving device; 3. Sand mixer cylinder; 4. Sand outlet; 5. Guide rod; 6. Guide groove; 7. Chamfer; 8. Connecting block; 9. Fixing block. DETAILED DESCRIPTION

[0014] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0015] like Figure 1 and Figure 2 The sand outlet structure of the sand mixer shown in the figure comprises a sealing plate 1, a driving device 2 and a sand outlet 4 opened at the bottom of the sand mixer cylinder 3. The sealing plate 1 in the utility model is arranged on the lower surface of the bottom of the sand mixer cylinder 3, and forms a horizontal moving pair with the sand mixer cylinder 3. The sand outlet 4 can be blocked by the horizontal movement of the sealing plate 1, thereby sealing the sand outlet 4, or the sealing plate 1 moves to one side of the sand outlet 4 to open the sand outlet 4. In order to enable the sealing plate 1 to completely seal the sand outlet 4, the area of ​​the sealing plate 1 in the utility model is larger than the area of ​​the sand outlet 4, and the upper surface of the sealing plate 1 is arranged to fit with the lower surface of the bottom of the sand mixer cylinder 3. The driving device 2 in the utility model is installed at the bottom of the sand mixer cylinder 3 and connected to the sealing plate 1. The driving device 2 is used to drive the sealing plate 1 to slide horizontally at the bottom of the sand mixer cylinder 3. The driving device 2 is used to open or close the sand outlet 4 by driving the horizontal sliding of the sealing plate 1.

[0016] like Figure 1 and Figure 2 The cam 6 is a kind of cam which is used to move the rollers 5 forward and backward to move the rollers 5 forward and backward to move the rollers 5 in a horizontal direction.

[0017] like Figure 1 and Figure 2 As shown, the utility model optimally sets the guide rod 5 to be L-shaped, and the top of the guide rod 5 is fixed to the lower surface of the bottom of the sand mixer barrel 3 by welding. On the one hand, it is convenient to manufacture the guide rod 5, and on the other hand, it improves the fixed connection strength between the guide rod 5 and the bottom of the sand mixer barrel 3.

[0018] like Figure 1 and Figure 2 As shown, the driving device 2 in the utility model preferably adopts a driving cylinder, and the cylinder body of the driving cylinder is installed at the bottom of the sand mixer barrel 3. The utility model preferably welds and fixes a fixing block 9 on the lower surface of the bottom of the sand mixer barrel 3. The cylinder of the driving cylinder and the fixing block 9 are detachably connected by bolts. In the utility model, the piston rod of the driving cylinder is parallel to the guide rod 5 and is at an equal distance from the two guide rods 5. The sealing plate 1 is connected to the piston rod of the driving cylinder, and the piston rod of the driving cylinder is telescopic to drive the sealing plate 1 to slide in the guide groove 6. In order to facilitate the connection between the piston rod of the driving cylinder and the sealing plate 1, the utility model welds and fixes a connecting block 8 on the lower surface of the sealing plate 1. The connecting block 8 is located between the two guide rods 5, and the end of the piston rod of the driving cylinder is connected to the connecting block 8.

[0019] like Figure 1 and Figure 2 As shown, the utility model is optimally provided with a chamfer 7 at one end of the sealing plate 1 away from the driving cylinder, and the chamfer 7 forms a cutting edge at the edge of the sealing plate 1. The utility model also provides a chamfer 7 at one end of the sealing plate 1 close to the driving cylinder. The chamfers at both ends of the sealing plate 7 facilitate the movement of the sealing plate 1, and at the same time, the molding sand that may adhere to the lower surface of the sand mixer barrel 3 and is located between the two guide rods 5 can be scraped off. In order to improve the strength of the sealing plate 1 and prevent it from bending and deforming when in use, the utility model provides a plurality of reinforcing ribs on the bottom surface of the sealing plate 1 for enhancing its strength.

[0020] The parts not specifically described in the above description are all prior art, or can be implemented by prior art. Moreover, the specific implementation cases described in this utility model are only preferred implementation cases of this utility model, and are not used to limit the implementation scope of this utility model. That is, all equivalent changes and modifications made according to the content of the patent application scope of this utility model should be regarded as the technical scope of this utility model.

Claims

1. A sand outlet structure of a sand mixer, comprising a sealing plate (1), a driving device (2) and a sand outlet (4) provided at the bottom of a sand mixer cylinder (3), characterized in that: The sealing plate (1) is arranged on the lower surface of the bottom of the sand mixer barrel (3) and forms a horizontal moving pair with the sand mixer barrel (3); the area of ​​the sealing plate (1) is larger than the area of ​​the sand outlet (4), and the upper surface of the sealing plate (1) is in contact with the lower surface of the bottom of the sand mixer barrel (3); the driving device (2) is installed at the bottom of the sand mixer barrel (3) and connected to the sealing plate (1) and is used to drive the sealing plate (1) to slide horizontally at the bottom of the sand mixer barrel (3); the horizontal sliding of the sealing plate (1) is used to open or close the sand outlet (4).

2. The sand outlet structure of the sand mixer according to claim 1, characterized in that: A guide rod (5) is fixedly provided on the outer surface of the bottom of the sand mixer barrel (3) at both sides of the sand outlet (4); the two guide rods (5) are parallel and a guide groove (6) is provided on each side of the two guide rods (5) facing each other; the sealing plate (1) is rectangular in shape; both sides of the sealing plate (1) are respectively located in the two guide grooves (6) and can slide in the guide grooves (6).

3. The sand outlet structure of the sand mixer according to claim 2, characterized in that: The guide rod (5) is L-shaped, and the top of the guide rod is fixed to the lower surface of the bottom of the sand mixer barrel (3) by welding.

4. The sand outlet structure of the sand mixer according to claim 2, characterized in that: The driving device (2) is a driving cylinder. The cylinder body of the driving cylinder is mounted at the bottom of the sand mixer barrel (3). The piston rod of the driving cylinder is parallel to the guide rod (5). The sealing plate (1) is connected to the piston rod of the driving cylinder. The piston rod of the driving cylinder is retracted to drive the sealing plate (1) to slide in the guide groove (6).

5. The sand outlet structure of the sand mixer according to claim 4, characterized in that: A chamfer (7) is provided at one end of the sealing plate (1) away from the driving cylinder, and the chamfer (7) forms a cutting edge at the edge of the sealing plate (1).

6. The sand outlet structure of the sand mixer according to claim 4 or 5, characterized in that: A connecting block (8) is fixedly arranged on the lower surface of the sealing plate (1), the connecting block (8) is located between the two guide rods (5), and the end of the piston rod of the driving cylinder is connected to the connecting block (8).

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