A mold for sand casting

Abstract

The utility model discloses a mould for sand casting belongs to mould technical field. The utility model discloses a workbench, lower mould, upper mould, clamping component and compacting component, and clamping component sets up on the workbench, and clamping component includes two way screw rod, and two connecting plates are threadedly cooperated on two way screw rod, and T -shaped board and clamping plate are installed on the connecting plate, and two T -shaped grooves are seted up on the workbench, and T -shaped board and T -shaped groove slide fit, and clamping plate and lower mould resist touch. The utility model discloses a clamping component and compacting component are set up, and the sand casting mould of existing usually lacks firm clamping structure, and it is easy to displace in the casting process because of external force effect, and the lower mould and upper mould are difficult to accurate positioning and close cooperation, thereby make the casting appear the defect such as flash, size deviation, and the problem of seriously reducing the yield of casting.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically a mold for sand casting. Background Technology

[0002] Sand casting is a traditional casting method that uses sand as the mold material, pours liquid metal into the mold cavity, and obtains castings of the required shape and size after cooling and solidification. Due to its mature technology, low cost, and wide applicability, it is widely used in many fields such as machinery manufacturing, automobiles, and aerospace. As the tool used to form sand molds in the sand casting process, the structure and performance of sand casting molds directly determine the quality of sand molds, which in turn affects the precision, surface quality, and production efficiency of castings.

[0003] Existing sand casting molds typically lack a stable clamping structure, making them prone to displacement due to external forces during the casting process. This results in difficulties in accurately positioning and tightly fitting the lower and upper molds, leading to defects such as flash and dimensional deviations in the castings, which severely reduces the yield rate. Therefore, this paper proposes a sand casting mold to improve upon these issues. Utility Model Content

[0004] The purpose of this utility model is to provide a mold for sand casting. By setting up a clamping component and a pressing component, it solves the problem that existing sand casting molds usually lack a stable clamping structure and are prone to displacement due to external forces during the casting process. This makes it difficult for the lower mold and the upper mold to be accurately positioned and tightly fitted, resulting in defects such as flash and dimensional deviations in the castings, which seriously reduces the yield of castings.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model is a mold for sand casting, including a worktable, a lower mold, an upper mold, a clamping assembly, and a pressing assembly. The clamping assembly is set on the worktable and includes a bidirectional threaded rod with two connecting plates threaded onto it. A T-shaped plate and a clamping plate are installed on the connecting plates. Two T-shaped grooves are opened on the worktable, and the T-shaped plates slide with the T-shaped grooves. The clamping plate abuts against the lower mold. The pressing assembly is set on the clamping assembly and includes two pressure plates, the bottom of which abuts against the upper mold.

[0007] Furthermore, the clamping assembly also includes a support plate, which is mounted on the worktable. The support plate has a circular hole, one end of which is rotatably engaged with the circular hole, and the other end of which is connected to the power output shaft of the drive source, which is mounted on the worktable.

[0008] Furthermore, the clamping assembly also includes two L-shaped plates, which are mounted on the clamping plate. The L-shaped plates are threaded with threaded rods, one end of which is fitted with a handle. The pressure plate has a circular groove, and the other end of the threaded rod is rotatably engaged with the circular groove.

[0009] Furthermore, a connecting groove is provided on the lower mold, and the upper mold slides into the connecting groove.

[0010] Furthermore, a support frame is installed at the bottom of the workbench.

[0011] This utility model has the following beneficial effects:

[0012] This invention, by setting up a clamping assembly and a pressing assembly, first places the upper mold on the lower mold, then drives the bidirectional threaded rod to rotate through the power output shaft of the servo motor. The bidirectional threaded rod drives two clamping plates to clamp the lower mold through two connecting plates. Finally, rotating the two handles drives the threaded rod to rotate on the L-shaped plate, and the threaded rod drives two pressure plates to press the upper mold. This solves the problem that existing sand casting molds usually lack a stable clamping structure, and are prone to displacement due to external forces during the casting process. This makes it difficult for the lower mold and the upper mold to be accurately positioned and tightly fitted, resulting in defects such as flash and dimensional deviations in the castings, which seriously reduces the yield of castings.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the mold.

[0015] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the mold.

[0016] Figure 3 This is a schematic diagram of the overall exploded structure of the clamping assembly.

[0017] Figure 4 This is a schematic diagram of the overall exploded structure of the clamping assembly.

[0018] Figure 5 This is a schematic diagram showing the disassembled structure of the lower mold and the upper mold.

[0019] In the diagram: 1. Workbench; 101. T-slot; 2. Lower mold; 201. Connecting slot; 3. Upper mold; 4. Clamping assembly; 401. Bidirectional threaded rod; 402. Connecting plate; 403. T-plate; 404. Clamping plate; 405. Support plate; 406. Round hole; 5. Pressing assembly; 501. Pressure plate; 502. L-shaped plate; 503. Threaded rod; 504. Handle; 505. Round slot; 6. Support frame. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-5 This utility model provides a technical solution: a sand casting mold, including a workbench 1, a lower mold 2, an upper mold 3, a clamping assembly 4 and a pressing assembly 5. A support frame 6 is installed at the bottom of the workbench 1 by welding. The support frame 6 is used to support the entire device and prevent the device from shaking or tipping over during operation, thus providing a stable working environment for the casting process.

[0022] The clamping assembly 4 is mounted on the worktable 1. The clamping assembly 4 includes a bidirectional threaded rod 401 with two connecting plates 402 threadedly engaged on it. By rotating the bidirectional threaded rod 401, the two connecting plates 402 can move simultaneously towards or away from each other, thereby adjusting the distance between the two connecting plates 402 to accommodate lower molds 2 of different sizes. T-shaped plates 403 and clamping plates 404 are bolted onto the connecting plates 402. Two T-shaped grooves 101 are provided on the worktable 1. The T-shaped plates 403 slide with the T-shaped grooves 101. The T-shaped grooves 101 guide the movement of the T-shaped plates 403 and the connecting plates 402, ensuring the linearity and stability of the movement of the connecting plates 402. The two clamping plates 404 abut against the two side walls of the lower mold 2, respectively, and are used to fix the lower mold 2 to prevent displacement during the casting process.

[0023] The clamping assembly 4 also includes a support plate 405, which is bolted to the worktable 1. The support plate 405 has a circular hole 406. One end of the bidirectional threaded rod 401 is rotatably engaged with the circular hole 406 through a bearing. The outer ring of the bearing is fixedly installed in the circular hole 406, and the inner ring of the bearing is rotatably engaged with one end of the bidirectional threaded rod 401. The other end of the bidirectional threaded rod 401 is connected to the power output shaft of the drive source through a coupling. The drive source can be a suitable servo motor, which is bolted to the worktable 1.

[0024] The clamping assembly 5 is mounted on the clamping assembly 4. The clamping assembly 5 includes two pressure plates 501. The bottom of both pressure plates 501 abuts against the top of the upper mold 3. Both pressure plates 501 are used to clamp the upper mold 3. During the casting process, the upper mold 3 can be prevented from shifting or loosening due to the pressure of the liquid metal, ensuring a tight fit between the upper mold 3 and the lower mold 2, thereby improving the quality of the casting.

[0025] The clamping assembly 5 also includes two L-shaped plates 502, which are bolted to the clamping plate 404. Threaded rods 503 are threaded onto the L-shaped plates 502. A handle 504 is welded to one end of the threaded rod 503. By rotating the threaded rod 503 through the handle 504, the position of the pressure plate 501 can be adjusted. A circular groove 505 is formed on the pressure plate 501. The other end of the threaded rod 503 is rotatably engaged with the circular groove 505 through a bearing. The outer ring of the bearing is fixedly installed in the circular groove 505. With the inner ring of the bearing rotatably engaged with the other end of the threaded rod 503, the circular groove 505 allows the threaded rod 503 to drive the pressure plate 501 to move smoothly up and down when rotating, while preventing the pressure plate 501 from rotating with the threaded rod 503, ensuring that the pressure plate 501 can effectively clamp the upper mold 3.

[0026] The lower mold 2 has a connecting groove 201, and the upper mold 3 slides into the connecting groove 201. The connecting groove 201 provides a precise positioning reference for the upper mold 3, ensuring that the upper mold 3 accurately reaches the predetermined position during installation. At the same time, this sliding fit makes the connection between the upper mold 3 and the lower mold 2 tighter and more stable. When injecting liquid metal, the mold will be subjected to greater pressure and impact. If the connection between the molds is unstable, it may cause the mold to shift or deform. The fit between the connecting groove 201 and the upper mold 3 can effectively resist these external forces and ensure the stability of the mold during the casting process. A pouring pipe is installed on the upper mold 3 by welding. The pouring pipe provides a dedicated channel for the liquid metal, which can accurately inject the liquid metal into the mold cavity.

[0027] During operation, first, place the lower mold 2 in a suitable working position, and then place the upper mold 3 along the connecting groove 201 next to the lower mold 2, so that the upper mold 3 contacts the lower mold 2. Start the servo motor via an external controller, causing the servo motor's power output shaft to drive the bidirectional threaded rod 401 to rotate. The bidirectional threaded rod 401 drives the two connecting plates 402 to move towards each other. Simultaneously, the two connecting plates 402 drive the two clamping plates 404 to move closer together, causing the T-shaped plate 403 to slide in the T-groove 101 until the side plates of the two clamping plates 404 are firmly in contact with the side walls of the lower mold 2, thus securely fixing the lower mold 2 to the worktable 1. At this point, the operator... By rotating the two handles 504, the threaded rod 503 is driven to rotate on the L-shaped plate 502. Since the threaded rod 503 rotates and engages with the circular groove 505 on the pressure plate 501, the rotation of the threaded rod 503 will cause the pressure plate 501 to move downward until the bottoms of both pressure plates 501 are tightly against the top plate of the upper mold 3, thereby pressing the upper mold 3. Finally, liquid metal is injected into the mold through the casting pipe for sand casting. During the casting process, since the clamping component 4 fixes the lower mold 2 and the pressing component 5 presses the upper mold 3, the stability of the mold can be guaranteed, and the mold can be prevented from shifting during the casting process, thus ensuring the stability of the mold during the casting process.

[0028] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A sand casting mold, comprising a worktable (1), a lower mold (2), and an upper mold (3), characterized in that, Also includes: A clamping assembly (4) is provided on a workbench (1). The clamping assembly (4) includes a bidirectional threaded rod (401). Two connecting plates (402) are threadedly engaged on the bidirectional threaded rod (401). A T-shaped plate (403) and a clamping plate (404) are installed on the connecting plate (402). Two T-shaped slots (101) are provided on the workbench (1). The T-shaped plate (403) is slidably engaged with the T-shaped slots (101). The clamping plate (404) abuts against the lower mold (2). A clamping assembly (5) is disposed on a clamping assembly (4). The clamping assembly (5) includes two pressure plates (501), the bottom of which abuts against the upper mold (3).

2. The mold for sand casting according to claim 1, characterized in that, The clamping assembly (4) also includes a support plate (405), which is mounted on the workbench (1). The support plate (405) has a circular hole (406). One end of the bidirectional threaded rod (401) is rotatably engaged with the circular hole (406), and the other end of the bidirectional threaded rod (401) is connected to the power output shaft of the drive source, which is mounted on the workbench (1).

3. The sand casting mold according to claim 1, characterized in that, The clamping assembly (5) also includes two L-shaped plates (502), which are mounted on the clamping plate (404). The L-shaped plates (502) are threaded with threaded rods (503). One end of the threaded rods (503) is equipped with a handle (504). The pressure plate (501) has a circular groove (505), and the other end of the threaded rods (503) is rotatably engaged with the circular groove (505).

4. The sand casting mold according to claim 1, characterized in that, The lower mold (2) is provided with a connecting groove (201), and the upper mold (3) is slidably engaged with the connecting groove (201).

5. A sand casting mold according to claim 1, characterized in that, A support frame (6) is installed at the bottom of the workbench (1).

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