Sand separating structure of molding main machine

Abstract

The utility model provides a sand separating structure of a molding main machine, and belongs to the technical field of casting processes. The sand feeding hopper solves the problem that existing molding sand is not uniformly distributed when entering a sand box through a sand feeding hopper. The sand separating structure of the molding main machine comprises a sand adding hopper body located above a sand box, a sand adding channel is formed in the inner side of the sand adding hopper body and is divided into a plurality of independent passing areas in the radial direction, and a partition part is arranged between every two adjacent passing areas. The sand adding hopper body is used for guiding molding sand into a sand box, the inner side of the sand adding hopper body is provided with a sand adding channel for the molding sand to pass through, the inner side of the sand adding channel is divided into a plurality of independent passing areas, when the molding sand is poured into the inner side of the sand adding hopper body, molding sand fluid can be divided by the independent passing areas, and the molding sand is divided at the position of the sand adding hopper body; and therefore, the molding sand uniformly enters the sand box in different areas.

Description

A sand-separating structure for a molding main unit Technical Field

[0001] This utility model belongs to the field of casting technology, and relates to a sand-separating structure, and more particularly to a sand-separating structure for a molding machine. Background Technology

[0002] During the casting molding process, the mixed molding sand is conveyed to the top of the molding machine via a belt conveyor and added to the sand box through a sand hopper. It is then compressed to form a sand mold. However, currently, during the sand adding process, when the molding sand is added to the sand box through the sand hopper, the sand is concentrated in the middle of the sand box, with more sand in the middle and less around the edges. Due to the difference in sand quantity, the sand mold in the middle of the sand box is compact and has high strength, while the sand mold around the edges is loose and has low strength. During the casting process, the loose sand mold at the edges of the casting can cause casting defects such as sand adhesion and mold expansion, which greatly affects the quality of the casting. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides a sand distribution structure for a molding machine. It solves the problem of uneven distribution of molding sand when it enters the sand box through the sand feeding hopper.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A sand distribution structure for a modeling machine is characterized by comprising a sand adding hopper body located above a sand box, wherein the inner side of the sand adding hopper body has a sand adding channel, and the sand adding channel is radially divided into multiple independent passage areas, with partitions between adjacent passage areas.

[0006] The sand hopper body is used to guide molding sand into the sand box. Its inner side has a sand filling channel for molding sand to pass through. The inner side of the sand filling channel of this application is divided into multiple independent passage areas. When the molding sand is poured into the inner side of the sand hopper body, the molding sand fluid can be diverted by multiple independent passage areas. The molding sand is diverted at the sand hopper body, so that the molding sand enters the sand box evenly in different areas.

[0007] Each sand-addition channel has a partition along its edge, which effectively blocks and separates the molding sand fluid. This prevents the molding sand fluid from concentrating in a single passage area and limits the maximum flow rate of that area. As a result, the molding sand is guided into adjacent or more distant passage areas, which further ensures a more even distribution of the molding sand entering the sand box.

[0008] In the sand-separation structure of the above-mentioned modeling host, the partition part of the passage area near the middle position has a guide slope that is inclined towards the outer passage area.

[0009] The main contact area for molding sand fluid is located near the center, which has high throughput. Therefore, a guide slope is designed on the partition to redirect the molding sand fluid towards the outer passage area. This ensures both the throughput of the molding sand and the even distribution of the molding sand entering the sand box.

[0010] In the sand-separating structure of the above-mentioned modeling host, the tilt angle of the guide slope is smaller the closer it is to the outer edge.

[0011] The inclination angle of the guide ramp is smaller closer to the outer edge of the horizontal plane, which is equivalent to a gentler slope, while it is steeper closer to the inner edge. This design allows the guide ramp near the middle area to quickly guide the molding sand fluid outward, while the gentler slope on the outer edge can guide more molding sand into the corresponding passage area. This design can ensure the passage while ensuring that the molding sand entering the sand box is evenly distributed.

[0012] In the sand-separation structure of the above-mentioned modeling host, the area of ​​the passage area near the middle position decreases in a stepwise manner from the area of ​​the passage area near the outermost position.

[0013] Located in the middle, the main contact area with the molding sand fluid is designed to have a larger flow area, which gradually decreases towards the periphery. This allows the molding sand to flow more smoothly and can better guide some of the molding sand through the outer flow area, resulting in a more uniform distribution of molding sand in the sand box.

[0014] In the sand-dividing structure of the above-mentioned modeling host, a sand-dividing part is provided on the inner side of the sand-adding hopper body. The sand-dividing part has multiple horizontal ribs arranged at intervals and multiple vertical ribs arranged at intervals. The horizontal ribs and the vertical ribs surround and form the above-mentioned partition part. The horizontal ribs and the vertical ribs divide the sand-adding channel into the above-mentioned passage area.

[0015] The sand distribution section is provided on the inner side of the sand adding hopper body of this application. The sand distribution section is composed of multiple horizontal and vertical ribs arranged at intervals. The intervals between the horizontal and vertical ribs form the aforementioned passage area. This design can orderly pass the molding sand into the sand box and distribute it evenly.

[0016] In the sand-separating structure of the above-mentioned modeling host, both the transverse ribs and the longitudinal ribs are plate-like or sheet-like structures, and the upper surfaces of the transverse ribs and the longitudinal ribs are the aforementioned guide slopes.

[0017] The transverse and longitudinal ribs of this application are in the form of sheets or plates. This design can better guide the molding sand fluid, allowing it to pass through each passage area more evenly and thus enter the sand box evenly.

[0018] In the sand distribution structure of the above-mentioned modeling host, there is a height difference between the transverse ribs near the center of the sand filling channel and the transverse ribs near the edge of the sand filling channel, and all the longitudinal ribs are arranged at the height difference.

[0019] The transverse and longitudinal ribs in this application represent the transverse and longitudinal flow of molding sand. The design of the longitudinal ribs being interspersed within the transverse ribs can better guide the molding sand evenly to each passage area.

[0020] In the sand distribution structure of the above-mentioned modeling host, all the transverse ribs are centrally symmetrically arranged with the center of the sand filling channel as the reference. The slope of the guide slope on the innermost pair of transverse ribs is 60° and the slope of the guide slope on the outermost pair of transverse ribs is 45°.

[0021] In the sand distribution structure of the above-mentioned modeling host, all longitudinal ribs are arranged in a centrally symmetrical manner with the center of the sand filling channel as the reference. The slope of the guide slope on the innermost pair of longitudinal ribs is 60°, and the slope of the guide slope on the outermost pair of longitudinal ribs is 45°.

[0022] In the sand distribution structure of the above-mentioned modeling host, the sand adding hopper body is a square tube structure and the radial cross section of the sand adding channel on its inner side is square. The transverse ribs are arranged at intervals along the width direction of the sand adding channel, and the longitudinal ribs are arranged at intervals along the length direction of the sand adding channel.

[0023] The sand adding hopper body of this application is more compatible with the sand box structure and has a square outline. The square sand adding channel on its inner side is more suitable for arranging transverse and longitudinal ribs, thereby dividing the sand adding channel into multiple square passing areas, allowing the passing molding sand to enter the sand box more evenly.

[0024] The beneficial effects of this utility model are:

[0025] 1. The sand filling channel of this application is divided into multiple independent passage areas. When the molding sand is poured into the sand filling hopper body, the molding sand fluid can be diverted by multiple independent passage areas. The molding sand is diverted at the sand filling hopper body, so that the molding sand enters the sand box evenly in different areas.

[0026] 2. The sand distribution section is provided on the inner side of the sand adding hopper body of this application. The sand distribution section is composed of multiple horizontal and vertical ribs arranged at intervals. The intervals between the horizontal and vertical ribs form multiple passage areas. This design can orderly pass the molding sand into the sand box and distribute it evenly. Attached Figure Description

[0027] Figure 1 is a top view of this utility model;

[0028] Figure 2 is a cross-sectional view of this utility model;

[0029] Figure 3 is a cross-sectional view of the present invention from another angle.

[0030] In the diagram: 1. Sand adding hopper body; 11. Sand adding channel; 12. Passing area; 13. Horizontal rib; 14. Longitudinal rib; 15. Guide slope; 16. Sand distribution section; 161. Height drop spacing. Detailed Implementation

[0031] As shown in Figures 1, 2, and 3, a sand distribution structure for a molding machine is provided. This sand distribution structure is connected to the sand inlet of the sand box. The sand distribution structure includes a sand feeding hopper body 1, which is connected to the sand inlet. The sand feeding hopper body 1 has a sand feeding channel 11 on its inner side. The sand feeding channel 11 is divided into multiple independent passage areas 12 in the radial direction, and there are partitions between adjacent passage areas 12. The sand feeding hopper body 1 is used to guide molding sand into the sand box. Its inner side has a sand feeding channel 11 for molding sand to pass through. The sand feeding channel 11 of this application is divided into multiple independent passage areas 12 on its inner side. When the molding sand is poured into the inner side of the sand feeding hopper body 1, the molding sand fluid can be diverted by multiple independent passage areas 12. The molding sand is diverted at the sand feeding hopper body 1, so that the molding sand enters the sand box evenly in different areas. Each sand-addition channel 11 has a partition along its edge. The partition effectively blocks and separates the molding sand fluid, preventing it from concentrating in a single passage area 12 and limiting the maximum flow rate of the passage area 12. This allows the molding sand to flow into adjacent or more distant passage areas 12, further ensuring a more uniform distribution of the molding sand entering the sand box.

[0032] Furthermore, the partition of the passage area 12 near the center has a guide ramp 15 that slopes towards the outer passage area 12. The passage area 12 near the center is in primary contact with the molding sand fluid and has high throughput. Therefore, the guide ramp 15 on the partition can reverse the flow of the molding sand fluid towards the outer passage area 12, ensuring both the throughput of the molding sand and ensuring a more uniform distribution of the molding sand entering the sand box. Preferably, the inclination angle of the guide ramp 15 is smaller closer to the outer edge. The inclination angle of the guide ramp 15 relative to the horizontal plane is smaller closer to the outer edge, meaning it is gentler, while it is steeper closer to the inner edge. This design allows the steep slope of the guide ramp 15 near the center to quickly guide the molding sand fluid outwards, while the gentle slope on the outer edge guides more molding sand into the corresponding passage area 12. This design ensures both throughput and a uniform distribution of the molding sand entering the sand box.

[0033] Furthermore, the area of ​​the passage zone 12 near the middle position decreases in a stepwise manner from the area of ​​the passage zone 12 near the outermost edge. The passage zone 12 located in the middle position is in main contact with the molding sand fluid, so its designed passage area is larger, and it gradually decreases towards the outer edge. This allows the molding sand to pass through more smoothly and can better guide some of the molding sand through the outer passage zone 12, resulting in a uniform distribution of molding sand in the sand box.

[0034] The specific structural design of the sand-adding channel 11 is as follows: A sand-dividing section 16 is provided inside the sand-adding hopper body 1. The sand-dividing section 16 has multiple spaced-apart transverse ribs 13 and multiple spaced-apart longitudinal ribs 14. The transverse ribs 13 and longitudinal ribs 14 surround and form the aforementioned partition section, dividing the sand-adding channel 11 into the aforementioned passage area 12. The sand-dividing section 16 provided inside the sand-adding hopper body 1 of this application is composed of multiple spaced-apart transverse ribs 13 and longitudinal ribs 14. The spaced-apart sections between the transverse ribs 13 and longitudinal ribs 14 form the aforementioned passage area 12. This design allows the molding sand to pass orderly through the sand-adding channel 11 and enter the sand box for uniform distribution.

[0035] Preferably, both the transverse ribs 13 and the longitudinal ribs 14 have a plate-like or sheet-like structure, and their upper surfaces are the aforementioned guide slopes 15. All transverse ribs 13 are centrally symmetrically arranged with respect to the center of the sand filling channel 11, with the guide slope 15 on the innermost pair of transverse ribs 13 having a slope of 60° and the guide slope 15 on the outermost pair of transverse ribs 13 having a slope of 45°. Similarly, all longitudinal ribs 14 are centrally symmetrically arranged with respect to the center of the sand filling channel 11, with the guide slope 15 on the innermost pair of longitudinal ribs 14 having a slope of 60° and the guide slope 15 on the outermost pair of longitudinal ribs 14 having a slope of 45°. The sheet-like or plate-like structure of the transverse ribs 13 and longitudinal ribs 14 in this application allows for better guidance of the molding sand fluid, enabling it to pass more evenly through each passage area 12 and thus enter the sand box uniformly.

[0036] Furthermore, there is a height difference spacing 161 between the transverse ribs 13 near the center of the sand filling channel 11 and the transverse ribs 13 near the edge of the sand filling channel 11, and all the longitudinal ribs 14 are arranged at the height difference spacing 161. The transverse ribs 13 and longitudinal ribs 14 of this application represent the transverse and longitudinal flow of molding sand, wherein the design of the longitudinal ribs 14 being interspersed within the transverse ribs 13 can better guide the molding sand evenly to each passage area 12.

[0037] Furthermore, the sand adding hopper body 1 has a square tubular structure, and the radial cross-section of the sand adding channel 11 on its inner side is square. The transverse ribs 13 are arranged at intervals along the width direction of the sand adding channel 11, and the longitudinal ribs 14 are arranged at intervals along the length direction of the sand adding channel 11. The sand adding hopper body 1 of this application is more adapted to the sand box structure and has a square outline. The square sand adding channel on its inner side is more suitable for arranging the transverse ribs 13 and the longitudinal ribs 14, thereby dividing the sand adding channel 11 into multiple square passing areas 12, allowing the passing molding sand to enter the sand box more evenly.

[0038] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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 this utility model. At the same time, the basic principles, main features, and advantages of this utility model have been shown and described above, which should be understood by those skilled in the art.

Claims

1. A sand separating structure of a molding main machine, characterized by comprising: It includes a sand-adding hopper body (1) located above the sand box, and a sand-adding channel (11) is provided on the inner side of the sand-adding hopper body (1). The sand-adding channel (11) is divided into multiple independent passage areas (12) in the radial direction, and there is a partition between adjacent passage areas (12).

2. The sand distribution structure of a molding machine according to claim 1, wherein The partition of the passage area (12) near the middle position has a guide slope (15) that slopes toward the outer passage area (12).

3. The sand-separating structure of a molding main unit according to claim 2, characterized in that, The closer the guide ramp (15) is to the periphery, the smaller its tilt angle.

4. The sand-separating structure of a molding main unit according to claim 3, characterized in that, The area of ​​the passage area (12) near the middle position decreases in a stepwise manner from the area of ​​the passage area (12) near the outermost position.

5. The sand distribution structure of a molding machine according to claim 4, wherein The sand-adding hopper body (1) has a sand-dividing section (16) on its inner side. The sand-dividing section (16) has multiple horizontal ribs (13) and multiple vertical ribs (14) arranged at intervals. The horizontal ribs (13) and the vertical ribs (14) surround and form the partition section mentioned above. The horizontal ribs (13) and the vertical ribs (14) divide the sand-adding channel (11) into the passage area (12) mentioned above.

6. The sand-separating structure of a molding main unit according to claim 5, characterized in that, Both the transverse rib (13) and the longitudinal rib (14) are plate-like or sheet-like structures, and the upper surface of the transverse rib (13) and the longitudinal rib (14) is the aforementioned guide slope (15).

7. The sand distribution structure of a molding machine according to claim 6, wherein There is a height difference spacing (161) between the transverse ribs (13) near the center of the sand filling channel (11) and the transverse ribs (13) near the edge of the sand filling channel (11), and all the longitudinal ribs (14) are arranged at the height difference spacing (161).

8. The sand-separating structure of a molding main unit according to claim 7, characterized in that, All the transverse ribs (13) are arranged in a centrally symmetrical manner with respect to the center of the sand channel (11). The slope of the guide slope (15) on the innermost pair of transverse ribs (13) is 60° and the slope of the guide slope (15) on the outermost pair of transverse ribs (13) is 45°.

9. The sand-separating structure of a molding main unit according to claim 8, characterized in that, All longitudinal ribs (14) are arranged in a centrally symmetrical manner with respect to the center of the sand channel (11). The slope of the guide slope (15) on the innermost pair of longitudinal ribs (14) is 60°, and the slope of the guide slope (15) on the outermost pair of longitudinal ribs (14) is 45°.

10. The sand-separating structure of a molding main unit according to any one of claims 1-9, characterized in that, The sand-adding hopper body (1) has a square tube structure and the radial section of the sand-adding channel (11) on its inner side is square. The transverse ribs (13) are arranged at intervals along the width direction of the sand-adding channel (11), and the longitudinal ribs (14) are arranged at intervals along the length direction of the sand-adding channel (11).

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