Position-adjustable sand scraping device for shell core machine

Abstract

The utility model relates to the technical field of shell core machines, and discloses a position-adjustable sand scraping device for a shell core machine, which comprises two guide rails arranged on a mounting frame in parallel, the two guide rails are vertically arranged, a lifting plate is arranged between the two guide rails in a sliding manner, two sides of the lifting plate are respectively positioned between the two guide rails, and the two guide rails are arranged on the mounting frame. A scraping plate is mounted below the lifting plate, and the scraping plate is positioned above the mold; a fixing plate is fixedly installed on the front side between the two guide rails, and an adjusting unit used for achieving lifting of the scraper is arranged between the fixing plate and the lifting plate. According to the utility model, the residual sand above the molds distributed on the left and right sides in the shell core machine can be scraped through the scraping plate, and meanwhile, the vertical position of the scraping plate can be adjusted through the adjusting unit so as to ensure that the scraping plate is in contact with the mold plate of the shell core machine, so that the device is suitable for shell core machine molds of different types and sizes; and the practicability of the sand scraping device for shell core machine molds of different types and sizes is improved.

Description

An adjustable-position scraping device for a shell core machine Technical Field

[0001] This utility model relates to the field of shell core making technology, and in particular to an adjustable position scraping device for shell core making. Background Technology

[0002] Currently, during the production of sand cores, the sand material needs to be sprayed into the mold of the core machine through the sand injection device. However, residual sand will accumulate at the sand injection port above the mold. If the residual sand on the mold is not cleaned in time, it will solidify and stick to the mold due to the influence of temperature, resulting in the waste of sand material. At the same time, the residual sand attached to the sand injection port will also cause some blockage, thus affecting the sand injection effect in the next shot.

[0003] Patent CN210498278U discloses an automatic sand scraping device for a coated sand core shooting machine. In this device, the scraper plate moves along with the sand cylinder, automatically scraping away sand particles from the core box surface. This eliminates the need for a dedicated person to stand beside the core shooting machine, reducing manpower. However, this scraping device can only scrape sand from one type of mold used in core shooting machines. When scraping molds of different types and sizes, the varying distances between the scraper plate and the mold prevent the device from effectively scraping different mold sizes. Therefore, this paper proposes an adjustable-position scraping device for core shooting machines to address these problems. Summary of the Invention

[0004] The purpose of this invention is to provide an adjustable scraping device for a shell core machine, which can adjust the position and height of the scraping plate to ensure that the scraping plate can perform scraping treatment on molds of different types and sizes.

[0005] The present invention adopts the following technical solution: it includes two guide rails installed on the mounting frame and arranged in parallel, the two guide rails are arranged vertically, a lifting plate is slidably arranged between the two guide rails, the two sides of the lifting plate are respectively located between the two guide rails, and a scraper is installed below the lifting plate and the scraper is located above the mold.

[0006] A fixing plate is fixedly installed on the front side between the two guide rails, and an adjustment unit for raising and lowering the scraper is provided between the fixing plate and the lifting plate.

[0007] Preferably, the adjusting unit includes a threaded rod and a mounting component disposed on the lifting plate. A rotating sleeve is installed in the middle of the mounting component. The rotating sleeve is located above the scraper. The threaded rod is disposed along the length direction of the lifting plate and is rotatably fitted inside the rotating sleeve. A threaded hole corresponding to the threaded rod is provided on the fixing plate.

[0008] Preferably, a handle is installed at the lower end of the threaded rod.

[0009] Preferably, the handle is provided with anti-slip threads.

[0010] Preferably, the lower end face of the threaded rod is provided with a mounting groove, one end of the handle is located in the mounting groove and is hinged by a connecting rod, and the handle is arranged in a "Z" shape.

[0011] Preferably, a hook is installed on the lifting plate. The hook is C-shaped, with the opening of the hook facing the lifting plate. There is a gap between the lifting plate and the lower side of the opening of the hook. The other end of the handle is used in conjunction with the hook.

[0012] Preferably, the rotating handle is a hexagonal handle.

[0013] Preferably, a positioning unit for limiting the position of the drive bevel gear is provided on one side of the fixing cover. The positioning unit includes a positioning rod, a pull handle is fixedly connected to the end of the positioning rod away from the fixing cover, the end of the positioning rod near the fixing ring is an inclined surface, a limiting plate is fixedly connected to the positioning rod, and an elastic element is provided between the limiting plate and the inner wall of the fixing cover.

[0014] Preferably, the elastic element is a spring and is sleeved on the positioning rod.

[0015] The beneficial effects of this invention are:

[0016] The scraper can remove residual sand from the molds distributed on the left and right sides of the shell core machine. At the same time, the vertical position of the scraper can be adjusted by the adjustment unit to ensure that the scraper contacts the template of the shell core machine. It is suitable for shell core machine molds of different types and sizes, improving the practicality of the sand scraping device for shell core machine molds of different types and sizes. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the sand scraping device of this utility model;

[0018] Figure 2 is a schematic diagram of the structure of the adjustment unit of this utility model;

[0019] Figure 3 is a schematic diagram of another embodiment of the adjustment unit structure of this utility model;

[0020] Figure 4 is a schematic diagram of the structure of this utility model;

[0021] Figure 5 is a structural schematic diagram of this utility model.

[0022] In the picture:

[0023] 1. Guide rail; 2. Lifting plate; 3. Mounting bracket; 11. Fixing plate; 12. Threaded rod; 21. Mounting component; 22. Rotating sleeve; 23. Handle; 24. Scraper; 25. Clamping plate; 26. Hook; 4. Fixing cover; 41. Rotating handle; 42. Driven bevel gear; 43. Rotating shaft; 44. Positioning unit; 121. Driven bevel gear; 421. Fixing ring; 422. Positioning hole; 441. Positioning rod; 442. Limiting plate; 443. Elastic element; 444. Pull handle. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings and embodiments:

[0025] As shown in Figures 1 and 2, an adjustable scraping device for a core forming machine includes two parallel guide rails 1 mounted on a mounting frame 3. The two guide rails 1 are vertically arranged, with a U-shaped cross-section and a slide rail. A lifting plate 2 is slidably arranged between the two guide rails 1. The two sides of the lifting plate 2 are respectively located in the slide rails of the two guide rails 1. A scraper 24 is installed below the lifting plate 2 and is located above the mold. A clamping plate 25 is provided on the side of the scraper 24 away from the lifting plate 2. The clamping plate 25 fixes the scraper 24 to the lifting plate 2 with bolts.

[0026] A fixing plate 11 is fixedly installed on the front side between the two guide rails 1, and an adjustment unit for raising and lowering the scraper 24 is provided between the fixing plate 11 and the lifting plate 2.

[0027] The adjustment unit includes a threaded rod 12 and a mounting component 21 mounted on the lifting plate 2. A rotating sleeve 22 is mounted in the middle of the mounting component 21. The rotating sleeve 22 is located above the scraper 24. The threaded rod 12 is arranged along the length of the lifting plate 2 and is rotatably fitted inside the rotating sleeve 22. The rotating sleeve 22 and the threaded rod 12 can be connected by a bearing. The rotating sleeve 22 and the threaded rod 12 can also be connected by a convex ring and an annular groove. A threaded hole corresponding to the threaded rod 12 is provided on the fixed plate 11. During rotation, the threaded rod 12 drives the lifting plate 2 to move up and down through the threaded hole on the fixed plate 11.

[0028] A handle 23 is installed at the lower end of the threaded rod 12. An installation groove is opened on the lower end face of the threaded rod 12. One end of the handle 23 is located in the installation groove and is hinged by a connecting rod. The handle 23 is arranged in a "Z" shape. A hook 26 is installed on the lifting plate 2. The hook 26 is arranged in a C shape. The opening of the hook 26 faces the lifting plate 2. There is a gap between the lifting plate 2 and the lower side of the opening of the hook 26. The other end of the handle 23 is used in conjunction with the hook 26. After the threaded rod 12 is rotated, the handle 23 bends ninety degrees and enters the hook 26 to limit the position of the handle 23 and realize the storage of the handle 23.

[0029] In the above scheme, the threaded rod 12 is driven to rotate by manually rotating the handle 23. The handle 23 drives the threaded rod 12 to rotate. Through the threaded engagement between the threaded rod 12 and the fixed plate 11, the threaded rod 12 moves upward and drives the lifting plate 2 to rise or fall, so as to ensure that the scraper 24 contacts the template of the shell core machine. This scheme is suitable for shell core machine molds of different types and sizes.

[0030] After the handle 23 is used, it is bent at ninety degrees, and the end of the handle 23 is placed in the hook 26 to store the handle 23, so as to prevent the scraper 24 from being blocked by the handle 23 when it is close to the template of the shell core machine.

[0031] As shown in Figures 3 to 5, the adjustment unit includes a fixed cover 4 and a threaded rod 12. The fixed cover 4 is installed on the lifting plate 2 by a screw and is located above the scraper 24. The threaded rod 12 is threadedly connected to the fixed plate 11. The lower end of the threaded rod 12 passes through the fixed cover 4 and is equipped with a driven bevel gear 121. The driven bevel gear 121 is located inside the fixed cover 4. A rotating shaft 43 is installed on the front side of the fixed cover 4 and passes through the fixed cover 4. The inner end of the rotating shaft 43 is equipped with a driving bevel gear 42 that meshes with the driven bevel gear 121. The outer end of the rotating shaft 43 is fixedly connected to a rotating handle 41 located outside the fixed cover 4. The rotating handle 41 is a hexagonal handle, which can increase the friction between the hand and the rotating handle 41.

[0032] A fixing ring 421 is fixedly connected to the rotating shaft 43 on the side of the driving bevel gear 42 away from the driven bevel gear 121. The fixing ring 421 has a plurality of equally spaced positioning holes 422 in the circumferential direction. A positioning unit 44 for limiting the position of the driving bevel gear 42 is provided on one side of the fixing cover 4.

[0033] In the above scheme, the rotating handle 41 is manually rotated, and the rotating handle 41 drives the active bevel gear 42 to rotate through the rotating shaft 43. The active bevel gear 42 drives the threaded rod 12 to rotate through the driven bevel gear 121. The rotation of the threaded rod 12, in cooperation with the threaded hole on the fixed plate 11, drives the lifting plate 2 to move up or down.

[0034] In order to achieve unidirectional rotation of the active bevel gear 42 and prevent the driven bevel gear 121 from rotating on its own and causing the lifting plate 2 to move downward, the positioning unit 44 includes a positioning rod 441. A pull handle 444 is fixedly connected to the end of the positioning rod 441 away from the fixed cover 4. The end of the positioning rod 441 near the fixed ring 421 is an inclined surface. A limiting plate 442 is fixedly connected to the positioning rod 441. An elastic element 443 is provided between the limiting plate 442 and the inner wall of the fixed cover 4. The elastic element 443 is a spring and is sleeved on the positioning rod 441.

[0035] In the above scheme, during the rotation of the active bevel gear 42, the fixed ring 421 rotates with the active bevel gear 42. At the same time, the circumferential direction of the fixed ring 421 contacts the inclined end of the positioning rod 441, pushing the positioning rod 441 to move. At this time, the elastic element 443 is compressed by the force of the limiting plate 442 on the positioning rod 441. When the end of the positioning rod 441 corresponds to the positioning hole 422 on the fixed ring 421, the end of the positioning rod 441 enters into the positioning hole 422, thereby limiting the position of the fixed ring 421 and preventing the fixed ring 421 from reversing.

[0036] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An adjustable-position scraping device for a shell core machine, characterized in that: It includes two guide rails (1) installed on the mounting frame (3) in parallel, the two guide rails (1) are vertically arranged, and a lifting plate (2) is slidably arranged between the two guide rails (1). The two sides of the lifting plate (2) are respectively located between the two guide rails (1). A scraper (24) is installed below the lifting plate (2) and the scraper (24) is located above the mold. A fixing plate (11) is fixedly installed on the front side between the two guide rails (1). An adjustment unit for raising and lowering the scraper (24) is provided between the fixing plate (11) and the lifting plate (2).

2. The adjustable-position sand-scraping device for a shell core machine according to claim 1, characterized in that: The adjustment unit includes a threaded rod (12) and a mounting part (21) set on the lifting plate (2). A rotating sleeve (22) is installed in the middle of the mounting part (21). The rotating sleeve (22) is located above the scraper (24). The threaded rod (12) is set along the length direction of the lifting plate (2). The threaded rod (12) is rotatably fitted in the rotating sleeve (22). The fixed plate (11) has a threaded hole corresponding to the threaded rod (12).

3. The adjustable-position scraping device for a shell core machine according to claim 2, characterized in that: A handle (23) is installed at the lower end of the threaded rod (12).

4. The adjustable-position sand-scraping device for a shell core machine according to claim 3, characterized in that: The handle (23) is provided with anti-slip threads.

5. The adjustable-position scraping device for a shell core machine according to claim 3, characterized in that: The lower end face of the threaded rod (12) is provided with an installation groove, one end of the handle (23) is located in the installation groove and is hinged by a connecting rod, and the handle (23) is arranged in a "Z" shape.

6. The adjustable-position scraping device for a shell core machine according to claim 5, characterized in that: The lifting plate (2) is equipped with a hook (26), which is C-shaped. The opening of the hook (26) faces the lifting plate (2). There is a gap between the lifting plate (2) and the lower side of the opening of the hook (26). The other end of the handle (23) is used in conjunction with the hook (26).

7. The adjustable-position scraping device for a shell core machine according to claim 1, characterized in that: The adjustment unit includes a fixed cover (4) and a threaded rod (12). The fixed cover (4) is installed on the lifting plate (2) and is located above the scraper (24). The threaded rod (12) is threadedly connected to the fixed plate (11). The lower end of the threaded rod (12) passes through the fixed cover (4) and is equipped with a driven bevel gear (121). The driven bevel gear (121) is located inside the fixed cover (4). A rotating shaft (43) is installed on the front side of the fixed cover (4). The inner end of the rotating shaft (43) is equipped with a driving bevel gear (42) that meshes with the driven bevel gear (121). The outer end of the rotating shaft (43) is fixedly connected to a rotating handle (41) located outside the fixed cover (4).

8. The adjustable-position scraping device for a shell core machine according to claim 7, characterized in that: The rotating handle (41) is a hexagonal handle.

9. The adjustable-position scraping device for a shell core machine according to claim 7, characterized in that: A positioning unit (44) for limiting the position of the active bevel gear (42) is provided on one side of the fixed cover (4). The positioning unit (44) includes a positioning rod (441). A pull handle (444) is fixedly connected to the end of the positioning rod (441) away from the fixed cover (4). The end of the positioning rod (441) near the fixed ring (421) is an inclined surface. A limiting plate (442) is fixedly connected to the positioning rod (441). An elastic element (443) is provided between the limiting plate (442) and the inner wall of the fixed cover (4).

10. The adjustable-position sand-scraping device for a shell core machine according to claim 9, characterized in that: The elastic element (443) is a spring and is sleeved on the positioning rod (441).

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