Precoated sand feeding mechanism

Abstract

The utility model relates to a precoated sand feeding mechanism which comprises a pair of installation frames and a temporary storage tank fixed between two vertical parts, a hollow pipe is fixed to a discharging port in the bottom of the temporary storage tank in a communicated mode, the hollow pipe extends horizontally, the two ends of the hollow pipe are communicated, and a feeding port communicated with the outside is formed in the position, right opposite to the discharging port, of the bottom of the hollow pipe. A feeding column extending in the axial direction of the hollow pipe is installed in the hollow pipe, the two ends of the feeding column penetrate and extend to the outer side of the hollow pipe, a storage groove is formed in the outer wall of the feeding column, and a first driving device is arranged on the vertical part on one side. According to the precoated sand quantitative feeding device, the feeding column is driven by the first driving device to rotate, so that the storage groove is sequentially aligned with the discharging opening and the feeding opening, quantitative feeding of precoated sand is achieved, the feeding amount does not need to be manually controlled, and time and labor are saved; the size of the storage space between the two sliding blocks in the storage groove is changed, and the single-time feeding amount can be flexibly adjusted.

Description

Technical Field

[0001] This utility model relates to the field of coated sand production technology, specifically a coated sand feeding mechanism. Background Technology

[0002] Coated sand is a type of molding sand or core sand in which a solid resin film is coated on the surface of the sand grains before molding. It is made by mixing raw sand, resin, curing agent, lubricant and other ingredients in a certain proportion. It has the characteristics of high strength, high dimensional accuracy, good collapsibility and excellent formability. It is widely used in the foundry industry to produce various metal parts and occupies an important position in modern casting technology.

[0003] Coated sand needs to be fed into the processing equipment during the production process. The existing feeding method is to directly transport it to the feed port and put it into the equipment. However, the traditional feed port has a single function and cannot feed quantitatively. Each time it is fed, the amount of material needs to be manually controlled, which is time-consuming and labor-intensive. Utility Model Content

[0004] The purpose of this invention is to provide a coated sand feeding mechanism that effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution.

[0006] A coated sand feeding mechanism includes a pair of mounting frames and a temporary storage tank fixed between two vertical parts. A hollow tube is fixedly connected to the discharge port at the bottom of the temporary storage tank. The hollow tube extends horizontally and is open at both ends. A feeding port that communicates with the outside is provided at the bottom of the hollow tube and directly opposite the discharge port. A feeding column extending along the axial direction of the hollow tube is installed inside the hollow tube. Both ends of the feeding column extend through to the outside of the hollow tube. A storage trough is provided on the outer wall of the feeding column. A first driving device is provided on one of the vertical parts. The first driving device is used to drive the feeding column to rotate inside the hollow tube. By driving the feeding column to rotate, the storage trough is aligned with the discharge port and the feeding port in sequence, realizing the quantitative feeding of coated sand without the need for manual control of the feeding amount, saving time and labor.

[0007] Furthermore, the two ends of the storage trough are respectively connected to the two ends of the feeding column. The two end faces of the feeding column are respectively provided with a second driving device. The ends of the two second driving devices are respectively provided with sliding blocks. The two sliding blocks are respectively slidably inserted into the storage trough from both sides. The second driving device is used to drive the sliding blocks on the same side to move and adjust along the axial direction of the hollow tube.

[0008] Furthermore, the outer peripheral wall of the feeding column slides against the inner wall of the hollow tube, and both sliding blocks slide against the inner wall of the storage tank, with the surfaces of both sliding blocks sliding against the inner wall of the hollow tube.

[0009] Furthermore, the first driving device includes a fixed frame, a drive motor, and a shaft. The fixed frame is fixed to the vertical part of one of the mounting frames, the drive motor is fixed to the fixed frame, one end of the shaft is fixed to one end face of the feeding column, and the other end is fixed to the output shaft of the drive motor.

[0010] Furthermore, the second driving device includes a telescopic cylinder horizontally fixed to the end face of the feeding column, a connecting plate fixed to the telescopic end of the telescopic cylinder, and a connecting rod fixed to the connecting plate, with the other end of the connecting rod corresponding to and fixed to a sliding block on the same side.

[0011] Furthermore, the connecting rod is provided with a clearance opening, through which the shaft is arranged.

[0012] Furthermore, a vertically extending guide tube is fixed below the hollow tube, and the top of the guide tube is connected to the injection port.

[0013] Furthermore, the telescopic cylinder uses an electric push cylinder.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows.

[0015] The first drive device drives the feeding column to rotate, so that the storage tank is aligned with the discharge port and the feeding port in sequence, realizing the quantitative feeding of the coated sand. There is no need to manually control the feeding amount, saving time and effort. The second drive device drives the sliding block to move and adjust along the axial direction of the hollow tube, changing the size of the storage space between the two sliding blocks in the storage tank, and the feeding amount can be flexibly adjusted.

[0016] The outer wall of the feeding column and the inner wall of the hollow tube, as well as the sliding block and the storage trough and the inner wall of the hollow tube, all fit together in a sliding fit to prevent material leakage and ensure feeding accuracy. The guide tube extends vertically upward and is connected to the feeding port, which can shield and guide the material to prevent it from splashing randomly. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0018] Figure 2 for Figure 1 A cross-sectional schematic diagram of the local structure shown;

[0019] Figure 3 This is a schematic diagram showing the structural distribution of the sliding block and feeding column in this utility model;

[0020] Figure 4 This is a schematic diagram of the first and second driving devices in this utility model.

[0021] Figure 5 This is a schematic diagram showing the distribution of the shaft and clearance opening structure in this utility model.

[0022] In the diagram: 1. Mounting frame; 11. Vertical part; 2. Temporary storage tank; 21. Discharge port; 3. Hollow tube; 31. Feeding port; 32. Guide tube; 4. Feeding column; 41. Storage trough; 42. Sliding block; 5. First drive device; 51. Fixing frame; 52. Drive motor; 53. Shaft; 6. Second drive device; 61. Telescopic cylinder; 62. Connecting plate; 621. Clearance port; 63. Connecting rod. Detailed Implementation

[0023] Please see Figures 1-5 This utility model provides a coated sand feeding mechanism. The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0025] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0026] The coated sand feeding mechanism includes a pair of mounting frames 1 and a temporary storage tank 2 fixed between two vertical parts 11. The two vertical parts 11 are installed on both sides of the feeding part of the processing device. A hollow tube 3 is fixedly connected to the discharge port 21 at the bottom of the temporary storage tank 2. The hollow tube 3 extends horizontally and is open at both ends. A feeding port 31 that communicates with the outside is provided at the bottom of the hollow tube 3 and directly opposite the discharge port 21. A guide tube 32 that extends vertically upward is fixed below the hollow tube 3. The top of the guide tube 32 communicates with the feeding port 31, and the bottom of the guide tube 32 is aligned with the feeding part of the processing device.

[0027] A feeding column 4 extending along the axial direction of the hollow tube 3 is installed inside the hollow tube 3. Both ends of the feeding column 4 extend through to the outside of the hollow tube 3. A storage trough 41 is provided on the outer wall of the feeding column 4. A first driving device 5 is provided on one of the vertical parts 11. The first driving device 5 is used to drive the feeding column 4 to rotate inside the hollow tube 3.

[0028] When the coated sand is fed into the processing device, it is temporarily stored in the temporary storage tank 2. At the same time, the first drive device 5 drives the feeding column 4 to rotate in the hollow tube 3. The position of the storage trough 41 on the feeding column 4 changes continuously around the axis of the hollow tube 3. When the storage trough 41 rotates to be aligned with the discharge port 21, the coated sand in the temporary storage tank 2 falls into the storage trough 41 through the discharge port 21. As the feeding column 4 continues to rotate, when the storage trough 41 is aligned with the feeding port 31, the coated sand in the storage trough 41 is discharged from the feeding port 31 into the guide pipe 32 and falls into the processing device, thereby realizing the quantitative feeding of the coated sand. The guide pipe 32 can shield and guide the material to prevent the material from splashing randomly.

[0029] Specifically, the two ends of the storage trough 41 are respectively connected to the two ends of the feeding column 4. The two end faces of the feeding column 4 are respectively provided with a second driving device 6. The ends of the two second driving devices 6 are respectively provided with sliding blocks 42. The two sliding blocks 42 are respectively slidably inserted into the storage trough 41 from both sides. The storage space between the two sliding blocks 42 is the storage space in the storage trough 41. The second driving device 6 is used to drive the sliding block 42 on the same side to translate and adjust along the axial direction of the hollow tube 3. By driving the sliding block 42 to move and adjust by the second driving device 6, the distance between the two sliding blocks 42 can be adjusted, thereby changing the size of the storage space and thus adjusting the amount of material fed at one time.

[0030] In addition, the outer peripheral wall of the feeding column 4 is slidably attached to the inner wall of the hollow tube 3, and both sliding blocks 42 are slidably attached to the inner wall of the storage tank 41. The surfaces of both sliding blocks 42 are slidably attached to the inner wall of the hollow tube 3. By ensuring that the feeding column 4 is tightly attached to the inner wall of the hollow tube 3, the sliding blocks 42 are tightly attached to the storage tank 41, and the sliding blocks 42 are tightly attached to the inner wall of the hollow tube 3, excessive gaps that could lead to material leakage are avoided.

[0031] The first driving device 5 includes a fixed frame 51, a drive motor 52, and a shaft 53. The fixed frame 51 is fixed on the vertical part 11 of one of the mounting frames 1. The drive motor 52 is fixed on the fixed frame 51. One end of the shaft 53 is fixed to one end face of the feeding column 4, and the other end is fixed to the output shaft of the drive motor 52. When the drive motor 52 works, its output shaft can drive the shaft 53 to rotate, and the shaft 53 drives the feeding column 4 to rotate, thereby providing a drive for the rotation of the feeding column 4 to feed materials.

[0032] The second driving device 6 includes a telescopic cylinder 61 horizontally fixed to the end face of the feeding column 4, a connecting plate 62 fixed to the telescopic end of the telescopic cylinder 61, and a connecting rod 63 fixed to the connecting plate 62. The other end of the connecting rod 63 is fixed to the sliding block 42 on the same side. The telescopic cylinder 61 is an electric push cylinder. Through the telescopic operation of the telescopic cylinder 61, its telescopic rod drives the connecting plate 62 and the connecting rod 63 to move synchronously, thereby driving the sliding block 42 to move and adjust along the storage trough 41 to realize the adjustment of the size of the storage space.

[0033] The connecting rod 63 is provided with a clearance opening 621, through which the shaft 53 passes. By providing a clearance opening 621 on the connecting rod 63 to allow the shaft 53 to pass through, space is provided for the shaft 53, thus avoiding obstruction or interference of the connecting rod 63 on the rotation of the shaft 53.

[0034] It is worth noting that the power supply and control methods of the power-consuming unit in this application all adopt existing technologies, which will not be described in detail here. Furthermore, the specific structure, model and coefficient indicators of all components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented. Therefore, they will not be described in detail here.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A coated sand feeding mechanism, comprising a pair of mounting frames (1) and a temporary storage tank (2) fixed between two vertical parts (11), characterized in that: A hollow tube (3) is fixedly connected to the discharge port (21) at the bottom of the temporary storage tank (2). The hollow tube (3) extends horizontally and is connected at both ends. The bottom of the hollow tube (3) is provided with a feeding port (31) that is connected to the outside at the position directly opposite the discharge port (21). The hollow tube (3) is equipped with a feeding column (4) extending along the axial direction of the hollow tube (3), and the two ends of the feeding column (4) extend through to the outside of the hollow tube (3). The outer wall of the feeding column (4) is provided with a material storage trough (41); One of the vertical parts (11) is provided with a first driving device (5), which is used to drive the feeding column (4) to rotate inside the hollow tube (3).

2. The coated sand feeding mechanism according to claim 1, characterized in that: The storage tank (41) has two ends that pass through the two ends of the feeding column (4), and the two end faces of the feeding column (4) are respectively provided with a second driving device (6). Sliding blocks (42) are respectively provided on the ends of the two second driving devices (6), and the two sliding blocks (42) are respectively slidably inserted into the storage tank (41) from both sides; The second driving device (6) is used to drive the sliding block (42) on the same side to translate and adjust along the axial direction of the hollow tube (3).

3. The coated sand feeding mechanism according to claim 2, characterized in that: The outer peripheral wall of the feeding column (4) slides against the inner wall of the hollow tube (3); Both sliding blocks (42) are in a sliding fit with the inner wall of the storage tank (41); The surfaces of both sliding blocks (42) are in a sliding fit with the inner wall of the hollow tube (3).

4. The coated sand feeding mechanism according to claim 2, characterized in that: The first driving device (5) includes a fixed frame (51), a drive motor (52) and a shaft (53); The fixing frame (51) is fixed on the vertical part (11) of the mounting frame (1) on one side, and the drive motor (52) is fixed on the fixing frame (51); One end of the shaft (53) is fixed to one side of the feeding column (4), and the other end is fixed to the output shaft of the drive motor (52).

5. The coated sand feeding mechanism according to claim 4, characterized in that: The second driving device (6) includes a telescopic cylinder (61) horizontally fixed to the end face of the feeding column (4), a connecting plate (62) fixed to the telescopic end of the telescopic cylinder (61), and a connecting rod (63) fixed to the connecting plate (62). The other end of the connecting rod (63) is fixed to the sliding block (42) on the same side.

6. The coated sand feeding mechanism according to claim 5, characterized in that: The connecting rod (63) is provided with a relief opening (621), and the shaft (53) is arranged through the relief opening (621).

7. The coated sand feeding mechanism according to claim 1, characterized in that: A vertically extending guide tube (32) is fixed below the hollow tube (3), and the top of the guide tube (32) is connected to the delivery port (31).

8. The coated sand feeding mechanism according to claim 5, characterized in that: The telescopic cylinder (61) is an electric push cylinder.

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