Sand shooting machine nozzle for casting oil cylinder shell

Abstract

The utility model discloses a sand shooting machine nozzle for casting an oil cylinder shell, which is characterized in that a scraper and a driving mechanism I for driving the scraper to move are arranged in an inner cavity of the nozzle, molding sand adhered to the inner cavity of the nozzle is scraped off through the repeated movement of the scraper, so that the nozzle becomes smooth, and a pointed cone can be used for firstly colliding and scattering large molding sand; the scraper blade I and the scraper blade II can segment molding sand, so that the molding sand can be conveniently scraped by the scraper, the scraper can be prevented from being adsorbed by the molding sand when not working by the partition plate, and the stability of the scraper is ensured.

Description

Technical Field

[0001] The utility model relates to the field of casting, and more particularly to a sand-shooting machine nozzle for casting an oil cylinder shell. Background Art

[0002] Casting is the main method of producing cylinder housings. In the process of casting cylinder housings, a sand shooting machine is used to make sand shells and sand cores. The sand shooting machine is generally composed of a sand storage hopper, a sand shooting chamber, a nozzle, a high-pressure gas source, a compaction device and a control system. The sand storage hopper and the high-pressure gas source form a sand supply mechanism, and the nozzle is connected to the sand supply mechanism. The sand shooting machine mainly uses a high-pressure gas source and a nozzle to spray the molding sand in the sand storage into the mold in the sand shooting chamber, and then compacts the molding sand through a compaction device to form the required sand core or sand shell.

[0003] During the operation of the sand blasting machine, the molding sand may be adsorbed on the inner wall of the nozzle due to uneven molding sand particle size, inappropriate molding sand humidity, etc., which will cause the inner wall of the nozzle to thicken or even become clogged, which will affect the sand blasting efficiency. Most of the existing nozzles do not have a cleaning structure. When the nozzle is clogged, the machine needs to be shut down and workers need to manually clear it, which is laborious and will also affect production efficiency to a certain extent.

[0004] Based on the above, the purpose of the present invention is to provide a sandblasting machine nozzle for casting a cylinder shell to solve the above problems. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a sand shooting machine nozzle for cylinder shell casting. The present invention arranges a scraper and a driving mechanism for driving the scraper to move in the inner cavity of the nozzle. The scraper is repeatedly moved to scrape off the molding sand adhered to the inner cavity of the nozzle, so that the nozzle becomes unobstructed.

[0006] The above technical purpose of the present utility model is achieved through the following technical solutions: a sand shooting machine nozzle for casting a cylinder shell, comprising a nozzle body, the nozzle body being provided with a sand inlet and a sand outlet, the sand inlet being arranged on the side of the nozzle body, a scraper being arranged in the inner cavity of the nozzle body, and a driving mechanism being provided on the nozzle body for driving the scraper to scrape off the molding sand adhered to the inner wall, the scraper being in the shape of an inverted bowl, and the edge of the scraper being in contact with the inner wall of the nozzle body.

[0007] By adopting the above technical solution, when the nozzle body is blocked or the sand output is insufficient or uneven, the scraper is driven to move back and forth by the driving mechanism, and then the molding sand on the inner wall of the nozzle body is scraped off by the scraper, so that the nozzle becomes unobstructed. Since the scraper is in the shape of an inverted bowl, the molding sand shoveled off will move to the middle position along the curvature of the inner wall of the scraper. The molding sand will be squeezed against each other and will break and fall down, which is convenient for the scraper to discharge the material, and can also reduce the contact area between the scraper and the inner wall of the nozzle, preventing the scraper from being stuck.

[0008] The utility model is further configured as follows: a plurality of scrapers are arranged on the outer ring of the scraper.

[0009] The utility model is further configured as follows: the scraper is provided with a plurality of sharp cones.

[0010] The utility model is further configured as follows: a plurality of scrapers 2 are arranged on the upper ring of the pointed cone.

[0011] The utility model is further configured as follows: a partition is slidably connected to the nozzle body, the inner cavity of the nozzle body is divided into a storage cavity and a sandblasting cavity by the partition, the scraper is located in the storage cavity, and a driving mechanism 2 is provided on the nozzle body to drive the partition to move outward.

[0012] The utility model is further configured as follows: an arc structure for facilitating material discharge is provided on the inner wall of the sandblasting chamber close to the second driving mechanism.

[0013] The utility model is further configured as follows: the second driving mechanism and the first driving mechanism both include cylinders, and the protruding ends of the cylinders on both sides are fixedly connected to the partition plate and the scraper respectively.

[0014] In summary, the present invention has the following beneficial effects:

[0015] The utility model provides a scraper and a driving mechanism for driving the scraper to move in the inner cavity of the nozzle. The scraper is repeatedly moved to scrape off the molding sand adhered to the inner cavity of the nozzle, so that the nozzle becomes unobstructed. The pointed cone can first break up the large pieces of molding sand. The first and second scraper blades will segment the molding sand, making it easier for the scraper to scrape it off. The partition can prevent the scraper from being adsorbed by the molding sand when it is not working, thereby ensuring the stability of the scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model patent Figure 1 , showing the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of this utility model patent Figure 2 , showing the structural relationship of the partition;

[0018] Figure 3This is a schematic diagram of the overall structure of this utility model patent Figure 3 , showing the structural relationship between blade 1, blade 2, the pointed cone and the scraper.

[0019] In the figure: 1. Nozzle body; 2. Sand inlet; 3. Sand outlet; 4. Scraper; 5. Shovel blade 1; 6. Cone; 7. Shovel blade 2; 8. Partition; 9. Storage chamber; 10. Sandblasting chamber; 11. Driving mechanism 1; 12. Driving mechanism 2; 13. Arc structure. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, unless there is a conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood by those skilled in the art in specific circumstances.

[0023] The present invention will be described in detail below with reference to the accompanying drawings.

[0024] A sandblasting machine nozzle for casting a cylinder shell, such as Figure 1-Figure 3 As shown, it includes a nozzle body 1, which is provided with a sand inlet 2 and a sand outlet 3. The sand inlet 2 is arranged on the side of the nozzle body 1, and the sand inlet is connected to the sand supply mechanism. A scraper 4 is provided in the inner cavity of the nozzle body, and the nozzle body 1 is provided with a driving mechanism 11 for driving the scraper 4 to scrape off the molding sand adhered to the inner wall of the nozzle body 1. The scraper 4 is in the shape of an inverted bowl, and the edge of the scraper 4 is in contact with the inner wall of the nozzle body 1.

[0025] Furthermore, a plurality of scrapers 5 are fixedly connected to the outer ring of the scraper 4.

[0026] Furthermore, a plurality of pointed cones 6 are fixedly connected to the scraper 4 .

[0027] Furthermore, a plurality of scrapers 7 are fixedly connected to the pointed cone 6.

[0028] Furthermore, a partition 8 is slidably connected to the nozzle body 1, and the inner cavity of the nozzle body 1 is divided into a storage cavity 9 and a sandblasting cavity 10 by the partition 8. The scraper 4 is located in the storage cavity 9, and a driving mechanism 12 is provided on the nozzle body 1 to drive the partition 8 to move outward.

[0029] Furthermore, an arc-shaped structure 13 is formed on the inner wall of the sandblasting chamber 10 on the side close to the second driving mechanism 12 for facilitating material discharge.

[0030] Furthermore, the second driving mechanism 12 and the first driving mechanism 11 both include cylinders, which can also be replaced by electric push rods or hydraulic cylinders. The protruding ends of the cylinders on both sides are fixedly connected to the partition 8 and the scraper 4 respectively.

[0031] Working principle: When the nozzle body 1 is clogged or the sand output is insufficient or uneven, the partition is driven outward by the cylinder in the driving mechanism 2 12 until the storage chamber 9 and the sand blasting chamber 10 are fully connected. The arc structure 13 is convenient for scraping off the molding sand attached to the partition to prevent the partition from getting stuck. Then the cylinder in the driving mechanism 1 11 drives the scraper 4 to move back and forth downward, and then the scraper 4 scrapes off the molding sand on the inner wall of the nozzle body 1, making the nozzle unobstructed and the pointed cone 6 The large pieces of molding sand can be broken up first, and the shovel blade 1 5 and the shovel blade 2 7 will segment the molding sand, making it easier for the scraper 4 to scrape it off. Since the scraper 4 is in the shape of an inverted bowl, the molding sand shoveled off will move toward the middle position along the curvature of the inner wall of the scraper 4. The molding sand will be squeezed against each other and will break and fall down, which is convenient for the scraper 4 to discharge the material. It can also reduce the contact area between the scraper 4 and the inner wall of the nozzle to prevent the scraper 4 from being stuck. The partition 8 can prevent the scraper 4 from being adsorbed by the molding sand when it is not working, thereby ensuring the stability of the scraper 4.

[0032] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A sandblasting machine nozzle for casting a cylinder housing, comprising a nozzle body (1), wherein the nozzle body (1) is provided with a sand inlet (2) and a sand outlet (3), and is characterized in that: The sand inlet (2) is arranged on the side of the nozzle body (1); a scraper (4) is arranged in the inner cavity of the nozzle body (1); a driving mechanism (11) is arranged on the nozzle body (1) for driving the scraper (4) to scrape off the molding sand adhered to the inner wall; the scraper (4) is in the shape of an inverted bowl, and the edge of the scraper (4) is in contact with the inner wall of the nozzle body (1).

2. The sandblasting machine nozzle for cylinder housing casting according to claim 1, characterized in that: A plurality of scrapers (5) are provided on the outer ring of the scraper (4).

3. The sandblasting machine nozzle for cylinder housing casting according to claim 1, characterized in that: The scraper (4) is provided with a plurality of pointed cones (6).

4. The sandblasting machine nozzle for cylinder housing casting according to claim 3, characterized in that: A plurality of scrapers (7) are provided on the upper ring of the pointed cone (6).

5. The sandblasting machine nozzle for cylinder housing casting according to claim 1, characterized in that: A partition (8) is slidably connected to the nozzle body (1), and the inner cavity of the nozzle body (1) is divided into a storage cavity (9) and a sandblasting cavity (10) by the partition (8). The scraper (4) is located in the storage cavity (9). The nozzle body (1) is provided with a second driving mechanism (12) for driving the partition (8) to move outward.

6. The sandblasting machine nozzle for casting a cylinder housing according to claim 5, characterized in that: An arc-shaped structure (13) for facilitating material discharge is provided on the inner wall of the sandblasting chamber (10) on one side close to the second driving mechanism (12).

7. The sandblasting machine nozzle for cylinder housing casting according to claim 5, characterized in that: The second driving mechanism (12) and the first driving mechanism (11) both include cylinders, and the protruding ends of the cylinders on both sides are fixedly connected to the partition (8) and the scraper (4) respectively.

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