Sand shooting cylinder structure of core shooter

Abstract

The utility model discloses a kind of sand shooting cylinder structures of anti-blocking of core shooter, applied in foundry equipment technical field, the utility model is driven rotation by compressed air efficiently by the structure, drive sand material in sand shooting cylinder forms stable agitation, can filter out impurity in compressed air in advance, avoid that impurity mixes into sand material and intensifies blockage, overall by mechanical linkage realizes sand material agglomeration and scatters, both guarantee compressed air conveying stability, and enhance sand material flow smoothness, significantly reduce sand shooting cylinder blockage probability;With the close adhesion of elastic characteristic inner wall, the sand material attached to the wall of cylinder forms continuous and compatible scraping effect, effectively avoid sand material accumulation agglomeration in cylinder wall, can self-adapting cylinder wall subtle uneven state, both guarantee wall scraping effect comprehensive, can avoid rigid damage to cylinder wall, further reduce the blockage risk caused by sand material retention, help sand material in sand shooting cylinder keep smooth flow, improve the stability of core shooter operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of casting equipment, and specifically relates to a sand-shooting cylinder structure for a core shooter that prevents clogging. Background Technology

[0002] Core shooters are specialized equipment used in the foundry industry to manufacture sand cores. They are divided into hot core box and cold core box types and are suitable for the production of complex molds. They achieve efficient core making by simultaneously shooting sand, compacting and heating to solidify, and using compressed air (200-260℃). They can produce high-precision sand cores and are widely used in casting fields such as automotive parts. The sand shooting cylinder is the core functional component of the core shooter. Its core function is to store sand and, driven by compressed air or other power, shoot the sand at high speed and evenly into the sand core box, so that the sand fills and forms the required sand core.

[0003] However, in traditional core shooter barrel structures, sand is prone to clumping and accumulating due to poor flow. Impurities in the air can easily mix into the sand, further increasing the risk of blockage. The sand handling relies on natural flow and simple airflow, which makes it difficult to ensure the stability of compressed air delivery and cannot effectively optimize the sand flow state, resulting in a high probability of barrel blockage. At the same time, sand tends to accumulate and clump on the barrel wall, and the retention of sand on the barrel wall can easily cause blockage, resulting in poor sand flow inside the barrel and thus affecting the stability of the core shooter's operation.

[0004] To address the problems mentioned in the background above, a core shooter anti-clogging sand-shooting cylinder structure is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a sand-shooting cylinder structure for a core-shooting machine that prevents clogging and sticking to the wall.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a core shooter anti-clogging sand-shooting cylinder structure, including an outer shell, a rotating rod rotatably connected to the center of the top inside the outer shell, an impeller fixedly sleeved on the top surface of the rotating rod near the middle, filter boxes bolted to both sides of the top inside the outer shell, and the bottom surface of the rotating rod near the middle penetrating the bottom of the filter box and rotatably connected, a stirring blade bolted to the bottom surface of the rotating rod away from the middle, an air compression pipe penetrating and sleeved on the left side of the top of the outer shell, a discharge port provided at the bottom of the outer shell, and wall scraping mechanisms provided on the front and back of the stirring blade.

[0007] The above technical solution involves compressed air entering the outer casing through an air compression pipe. The air impeller rotates, which in turn drives the rotating rod to rotate synchronously. The rotation of the rotating rod drives the stirring blades to agitate the sand inside the cylinder, preventing clumping and stagnation. The filter box filters the incoming compressed air to prevent impurities from mixing into the sand and aggravating clogging, and to prevent sand from entering the air compression pipe. The agitated sand is then smoothly discharged through the outlet, achieving anti-clogging and stable sand delivery. This structure can efficiently drive the rotation with compressed air, causing stable agitation of the sand inside the sand-shooting cylinder. It can pre-filter impurities in the compressed air, preventing impurities from mixing into the sand and aggravating clogging. The entire structure breaks up sand clumps through mechanical linkage, ensuring stable compressed air delivery and enhancing the smooth flow of sand, significantly reducing the probability of clogging in the sand-shooting cylinder, and improving the operational stability and sand core forming quality of the core shooter.

[0008] The present invention is further configured such that the wall scraping mechanism includes an opening, the opening is located on the outer side of the front and back of the stirring blade and extends through it, an insert rod is fixedly sleeved inside the opening, a connecting plate is fixedly sleeved on the front end and rear end of the insert rod, and a scraper is bolted to the outer side between the two connecting plates at one end.

[0009] The above technical solution employs a wall-scraping mechanism. When the stirring blade rotates, it drives the connecting plates at the front and rear ends of the insertion rod to move together, thereby causing the scraper to adhere to the inner wall of the outer shell. During the rotation of the stirring blade, the sand adhering to the cylinder wall is continuously scraped away, reducing the accumulation and retention of sand on the inner wall of the outer shell. This helps to improve the smooth flow of sand in the sand-shooting cylinder. By utilizing its elastic properties to tightly adhere to the inner wall of the cylinder, it forms a continuous and adaptive scraping action on the sand adhering to the cylinder wall, effectively preventing sand from accumulating and clumping on the cylinder wall. It can adapt to the slight unevenness of the cylinder wall, ensuring a comprehensive wall-scraping effect while avoiding hard damage to the cylinder wall. This further reduces the risk of blockage caused by sand retention, helps maintain the smooth flow of sand in the sand-shooting cylinder, and improves the stability of the core-shooting machine.

[0010] The present invention is further configured such that a sealing ring 1 is fitted onto the bottom of the filter box and the bottom of the inner part, and a sealing ring 2 is fitted onto the top of the rotating rod surface away from the middle.

[0011] The above technical solution employs two sealing rings, one and the other, which are connected by an interference fit to provide a dynamic sealing function, preventing sand or impurities from entering and affecting the rotation of the rotating rod.

[0012] The present invention is further provided that a filter screen is sleeved at one end of the bottom of the air compression pipe.

[0013] The above technical solution is adopted to prevent impurities from mixing into the sand and aggravating blockage, and to prevent sand from entering the air compressor pipe.

[0014] The present invention is further configured such that the air compression pipe is inclined.

[0015] The above technical solution allows for easy compression of the impeller by setting it to an inclined shape.

[0016] The present invention is further configured such that a feed inlet is provided on the right side of the top of the outer shell.

[0017] The above technical solution allows for easy addition of sand to the inside of the outer casing by setting up a feed inlet, which is then sealed with a sealing cap.

[0018] The present invention is further configured such that the scraper is made of polyurethane.

[0019] The above technical solution is adopted: by using polyurethane, which is elastic, it can prevent damage to the inner wall of the outer shell.

[0020] The present invention is further configured such that a mounting base is bolted to the bottom of the outer casing.

[0021] The above technical solution, by setting up an installation base, facilitates installation and stabilizes the structure.

[0022] In summary, this utility model has the following beneficial effects: 1. This utility model can efficiently drive the rotation with compressed air through this structure, which drives the sand material in the sand-shooting cylinder to form a stable agitation. It can pre-filter out impurities in the compressed air, avoiding impurities from mixing into the sand material and aggravating blockage. The whole structure can break up sand agglomerates through mechanical linkage, which not only ensures stable compressed air delivery, but also enhances the smooth flow of sand material, significantly reduces the probability of sand-shooting cylinder blockage, and improves the operating stability of the core shooter and the sand core forming quality. 2. This utility model utilizes the elastic properties to closely adhere to the inner wall of the cylinder, forming a continuous and adaptive scraping action on the sand adhering to the cylinder wall. This effectively prevents the sand from accumulating and clumping on the cylinder wall, and can adapt to the slight unevenness of the cylinder wall. It ensures a comprehensive scraping effect while avoiding hard damage to the cylinder wall, further reducing the risk of blockage caused by sand retention. This helps the sand in the sand-shooting cylinder to maintain smooth flow and improves the stability of the core shooter operation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front sectional view of the overall structure of this utility model; Figure 3 This is a utility model Figure 2 Enlarged schematic diagram of the structure at point A; Figure 4 This is a partial structural front view of this utility model.

[0024] Reference numerals in the attached drawings: 1. Outer shell; 2. Rotating rod; 3. Impeller; 4. Filter box; 5. Agitator blade; 6. Air compression pipe; 7. Discharge port; 8. Inlet port; 9. Opening; 10. Insert rod; 11. Connecting plate; 12. Scraper; 13. Sealing ring one; 14. Sealing ring two; 15. Filter screen; 16. Mounting base. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Example 1: refer to Figure 1 , Figure 2 , Figure 3 A core ejector anti-clogging sand-shooting cylinder structure includes an outer shell 1. A rotating rod 2 is rotatably connected to the center of the top of the inner part of the outer shell 1. An impeller 3 is fixedly sleeved on the top surface of the rotating rod 2 near the center. Filter boxes 4, with a mesh size of 150-200, are bolted to both sides of the top of the inner part of the outer shell 1. The bottom surface of the rotating rod 2 near the center penetrates the bottom of the filter box 4 and is rotatably connected. A stirring blade 5 is bolted to the bottom surface of the rotating rod 2 away from the center. An air compression pipe 6 penetrates and is sleeved on the left side of the top of the outer shell 1. A [further details about the bottom of the outer shell 1 are missing]. The device has a discharge port 7, and scraping mechanisms are provided on the front and back of the stirring blades 5. Compressed air enters the interior of the outer shell 1 through the air compression pipe 6. The air impeller 3 rotates, which in turn drives the rotating rod 2 to rotate synchronously. The rotation of the rotating rod 2 drives the stirring blades 5 to rotate, stirring the sand in the cylinder to prevent clumping and retention. The filter box 4 filters the incoming compressed air to prevent impurities from mixing into the sand and aggravating the blockage, and to prevent the sand from entering the air compression pipe 6. The stirred sand is smoothly discharged through the discharge port 7, achieving anti-blocking and stable sand conveying.

[0027] refer to Figure 2 , Figure 3 The bottom of the filter box 4 and the bottom inside are fitted with sealing ring 13, and the top of the rotating rod 2 away from the middle is fitted with sealing ring 24. By setting sealing ring 13 and sealing ring 24, and fitting them together with an interference fit, a dynamic sealing function is provided to prevent sand or impurities from entering and affecting the rotation of the rotating rod 2. The material is nitrile rubber.

[0028] refer to Figure 2 , Figure 3 A filter screen 15 is fitted to one end of the bottom of the air compression pipe 6. By setting the filter screen 15, impurities are prevented from mixing into the sand and aggravating the blockage. The filter screen 15 is 60-80 mesh and works with the filter box 4 for graded filtration. The filter screen 15 intercepts large particles of coarse impurities, and the filter box 4 intercepts fine dust and oil mist, together preventing impurities from mixing into the sand and aggravating the blockage of the sand-shooting cylinder.

[0029] refer to Figure 1 , Figure 2 , Figure 3 The air compression pipe 6 is set in an inclined position. By setting it in an inclined position, it is easy to compress air to drive the impeller 3 to rotate. The inclination angle is 30°-45°.

[0030] refer to Figure 1 , Figure 2 The top right side of the outer casing 1 is provided with a feed port 8. By providing the feed port 8, it is convenient to add sand into the inner part of the outer casing 1 and seal it with a sealing cover.

[0031] refer to Figure 1 , Figure 2 The bottom of the outer casing 1 is bolted to a mounting base 16, which facilitates installation and stabilizes the structure.

[0032] Example 2: refer to Figure 2 , Figure 4 A core shooter anti-clogging sand-shooting cylinder structure includes a wall-scraping mechanism comprising an opening 9, which extends through the outer sides of the front and back of the stirring blade 5. An insert rod 10 is fixedly sleeved inside the opening 9. Connecting plates 11 are fixedly sleeved at the front and rear ends of the surface of the insert rod 10. A scraper 12 is bolted to the outer side between the two connecting plates 11 at one end. When the stirring blade 5 rotates, it drives the connecting plates 11 at the front and rear ends of the insert rod 10 to move together, thereby causing the scraper 12 to adhere to the inner wall of the outer shell 1. During the rotation of the stirring blade 5, the sand adhering to the cylinder wall is continuously scraped away, reducing the accumulation and retention of sand on the inner wall of the outer shell 1, and helping to improve the smooth flow of sand in the sand-shooting cylinder.

[0033] refer to Figure 2 The scraper 12 is made of polyurethane. By being made of polyurethane, it is elastic and can prevent damage to the inner wall of the outer shell 1.

[0034] Brief description of the operation: Compressed air enters the interior of the outer shell 1 through the air compression pipe 6. The air impeller 3 rotates, which in turn drives the rotating rod 2 to rotate synchronously. The rotation of the rotating rod 2 drives the stirring blade 5 to rotate, stirring the sand in the cylinder to prevent clumping and retention. The filter box 4 filters the incoming compressed air to prevent impurities from mixing into the sand and aggravating the blockage, and to prevent sand from entering the air compression pipe 6. The sand treated by stirring is smoothly discharged through the discharge port 7, realizing anti-clogging and stable sand conveying. When the stirring blade 5 rotates, it drives the connecting plates 11 at the front and rear ends of the insert rod 10 to move together, thereby making the scraper 12 adhere to the inner wall of the outer shell 1. During the rotation of the stirring blade 5, the sand adhering to the cylinder wall is continuously scraped off, reducing the accumulation and retention of sand on the inner wall of the outer shell 1, and helping to improve the smooth flow of sand in the sand-shooting cylinder.

[0035] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0036] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A core shooter anti-clogging sand-shooting cylinder structure, comprising a shell (1), characterized in that: A rotating rod (2) is rotatably connected to the center of the top inside the outer shell (1). An impeller (3) is fixedly sleeved on the top surface of the rotating rod (2) near the middle. Filter boxes (4) are bolted to both sides of the top inside the outer shell (1). The bottom surface of the rotating rod (2) near the middle penetrates the bottom of the filter box (4) and is rotatably connected. A stirring blade (5) is bolted to the bottom surface of the rotating rod (2) away from the middle. An air compression pipe (6) is inserted and sleeved on the left side of the top of the outer shell (1). A discharge port (7) is provided at the bottom of the outer shell (1). A wall scraping mechanism is provided on the front and back of the stirring blade (5).

2. The anti-clogging sand-shooting cylinder structure for a core shooter according to claim 1, characterized in that: The scraping mechanism includes an opening (9), which is located on the outside of the front and back of the stirring blade (5). A rod (10) is fixedly sleeved inside the opening (9). A connecting plate (11) is fixedly sleeved on the front and rear ends of the surface of the rod (10). A scraper (12) is bolted to the outside of the two connecting plates (11) at one end.

3. The anti-clogging sand-shooting cylinder structure for a core shooter according to claim 1, characterized in that: The bottom of the filter box (4) and the bottom inside are fitted with a sealing ring one (13), and the top of the rotating rod (2) away from the middle is fitted with a sealing ring two (14).

4. The anti-clogging sand-shooting cylinder structure for a core shooter according to claim 1, characterized in that: A filter screen (15) is fitted onto one end of the bottom of the air compression pipe (6).

5. The anti-clogging sand-shooting cylinder structure for a core shooter according to claim 1, characterized in that: The air compression pipe (6) is set at an angle.

6. The anti-clogging sand-shooting cylinder structure for a core shooter according to claim 1, characterized in that: The outer casing (1) has a feed inlet (8) on the right side of its top.

7. The anti-clogging sand-shooting cylinder structure for a core shooter according to claim 2, characterized in that: The scraper (12) is made of polyurethane.

8. The anti-clogging sand-shooting cylinder structure for a core shooter according to claim 1, characterized in that: The bottom of the outer casing (1) is bolted to a mounting base (16).

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