Large-size sand core demolding device

Abstract

The utility model relates to the technical field of sand core demoulding, and discloses a large-size sand core demoulding device which comprises a U-shaped seat and a wood sand box, a plurality of supporting legs are fixed on the bottom surface of the U-shaped seat, a transverse plate is fixed on the outer wall of the U-shaped seat, a ground cone is installed in the transverse plate in a threaded mode, a fixing assembly is arranged on the U-shaped seat, and the wood sand box is fixed on the fixing assembly. A sand core body is formed in the wood molding sand box, a lifting hook is installed on the sand core body, and moving assemblies are arranged in the supporting legs. The large-size sand core can be effectively prevented from being damaged due to improper stress in the demolding, carrying and hoisting processes, the molding quality of the sand core is guaranteed, the stability of the whole device in the operation process is improved, displacement deviation is prevented, the demolding efficiency is effectively improved, and the large-size sand core demolding device is suitable for operation scenes with many sandy soil in workshops and severe environments and has good application prospects. And the molding and demolding requirements of large-size sand cores can be met, demolding operation of sand cores of different specifications can be compatible, and the application range is wider.

Description

Technical Field

[0001] This utility model relates to the field of sand core demolding technology, specifically a large-size sand core demolding device. Background Technology

[0002] Sand casting is a common process for manufacturing castings in industrial production, and it is widely used in the production of mechanical parts such as pump bodies. Large-size sand cores are key components in sand casting, and their molding quality and demolding efficiency directly affect the production progress and product quality. In the sand casting process of complex castings, a metal frame must first be pre-placed in a wooden sand mold box. Following demolding, handling, and hoisting processes, the core and outer sand mold are combined for pouring to complete the process. Therefore, a large-size sand core demolding device is an indispensable piece of equipment in the sand casting process.

[0003] In existing technologies, fixing the wooden sand box during the demolding process of sand cores is inconvenient. This causes the wooden sand box to move synchronously with the sand core during demolding, which not only directly hinders the smooth progress of the demolding operation but also reduces demolding efficiency. At the same time, the device is difficult to be compatible with the demolding requirements of sand cores of different specifications and lacks sufficient adaptability to actual working scenarios with sandy soil and harsh environments in workshops, thus failing to reliably perform the demolding function.

[0004] Therefore, we propose a large-size sand core demolding device to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a large-size sand core demolding device to solve the problems mentioned in the background art, such as slow demolding efficiency and difficulty in meeting the demolding needs of sand cores of different specifications.

[0006] This utility model provides the following technical solution: a large-size sand core demolding device, including a U-shaped base and a wooden sand box. The bottom surface of the U-shaped base is fixed with multiple legs, the outer wall of the U-shaped base is fixed with a horizontal plate, a ground cone is installed in the internal thread of the horizontal plate, a fixing component is provided on the U-shaped base, a sand core body is formed inside the wooden sand box, a hook is installed on the sand core body, and a moving component is provided inside the legs.

[0007] Preferably, the fixing assembly includes a telescopic rod fixed to the inner wall of the U-shaped seat, a clamping plate fixed to the end of the telescopic rod, two telescopic rods symmetrically arranged about the central axis of the clamping plate, and the clamping plate is in contact with the outer wall of the wooden sand box.

[0008] Preferably, a screw is rotatably mounted on the end side of the clamping plate, the screw is threadedly installed on the U-shaped seat, and a rocker wheel is fixed on the end side of the screw.

[0009] Preferably, the movable component includes a cavity formed within the support leg, an electric actuator fixed within the cavity, a U-shaped block fixed at the output end of the electric actuator, a support shaft fixed within the U-shaped block, and a roller rotating on the support shaft.

[0010] Preferably, the U-shaped block slides in contact with the cavity.

[0011] Preferably, multiple hooks are symmetrically arranged.

[0012] This utility model has the following beneficial effects:

[0013] 1. This device effectively prevents damage to large-sized sand cores due to improper stress during demolding, handling, and hoisting, ensuring the quality of the sand core molding. It securely fixes the wooden sand box, enhancing the overall stability of the device during operation, preventing displacement deviations, ensuring a smooth and stable demolding process, and effectively improving demolding efficiency.

[0014] 2. This device is suitable for working environments with sand and soil, and can not only meet the molding and demolding needs of large-sized sand cores, but also be compatible with demolding operations of sand cores of different specifications, thus having a wider range of applications. Furthermore, the operation process is simple and easy to understand, highly practical, and can effectively reduce operational difficulty and labor costs.

[0015] 3. This device can be easily adjusted to its working position without the need for additional handling equipment, effectively reducing the difficulty of moving the device within the workshop and adapting to actual production situations with large sand box sizes. Its simple and convenient operation further improves work efficiency while maintaining the advantages of low manufacturing costs and simple maintenance, making it more suitable for actual workshop operations and with a wider range of applications. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 .

[0017] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 .

[0018] Figure 3 This is a schematic diagram of the fixing component structure of this utility model.

[0019] Figure 4 This is a cross-sectional view of the overall structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the structure of the mobile component of this utility model.

[0021] In the diagram: 1. U-shaped base; 2. Support leg; 3. Horizontal plate; 4. Ground cone; 5. Fixing component; 51. Telescopic rod; 52. Clamping plate; 53. Screw; 54. Rocker wheel; 6. Wooden sand box; 7. Sand core body; 8. Hook; 9. Moving component; 91. Cavity; 92. Electric actuator; 93. U-shaped block; 94. Support shaft; 95. Roller. Detailed Implementation

[0022] 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.

[0023] Example 1: This example aims to address the problems encountered during the sand casting process of complex castings, such as the lack of a suitable force application point and the susceptibility to damage from direct contact with the large-sized sand core during demolding and handling, as well as the instability of the wooden sand box 6 and the tendency for the entire device to shift, thus affecting demolding efficiency and sand core quality. Please refer to [link to relevant documentation]. Figure 1 - Figure 4 A large-size sand core demolding device includes a U-shaped base 1 and a wooden sand box 6. Multiple support legs 2 are fixed on the bottom surface of the U-shaped base 1. A horizontal plate 3 is fixed on the outer wall of the U-shaped base 1. A ground cone 4 is installed on the internal thread of the horizontal plate 3. A fixing component 5 is provided on the U-shaped base 1. A sand core body 7 is formed inside the wooden sand box 6. A hook 8 is installed on the sand core body 7. Multiple hooks 8 are symmetrically arranged.

[0024] The fixing component 5 includes a telescopic rod 51 fixed to the inner wall of the U-shaped seat 1. A clamping plate 52 is fixed to the end side of the telescopic rod 51. There are two telescopic rods 51 symmetrically arranged about the central axis of the clamping plate 52. The clamping plate 52 is in contact with the outer wall of the wooden sand box 6. A screw 53 is rotatably mounted on the end side of the clamping plate 52. The screw 53 is threadedly installed with the U-shaped seat 1. A rocker wheel 54 is fixed to the end side of the screw 53.

[0025] In this embodiment: When in use, the metal keel is first precisely pre-placed in the wooden sand box 6, and then the sand core is evenly spread in the box and compacted. After the sand core body 7 is formed, if demolding is required, the U-shaped seat 1 is moved to the designated working position by the moving component 9.

[0026] Then, adjust the fixing component 5 on the U-shaped seat 1, rotate the rocker wheel 54 to drive the screw 53 to rotate, and the screw 53 pushes the clamping plate 52 to move smoothly towards the wood sand box 6. The telescopic rods 51 symmetrically arranged on both sides can ensure that the clamping plate 52 moves smoothly without deviation until the clamping plate 52 is tightly attached to the outer wall of the wood sand box 6, thereby achieving a firm fixation of the wood sand box 6.

[0027] Next, the U-shaped base 1 is firmly fixed to the ground by the ground cone 4 inside the horizontal plate 3, further ensuring the overall stability of the device and avoiding displacement deviation during subsequent operations.

[0028] Once ready, initiate the demolding process. Multiple symmetrical hooks 8 on the sand core body 7 are connected via external hoisting equipment. Because the hooks 8 are firmly connected to the pre-installed metal frame inside the sand core, the force applied during hoisting is concentrated entirely on the metal frame, without direct contact with the sand core body 7. The hoisting equipment is slowly raised, and under traction, the sand core body 7 gradually separates from the wooden sand box 6, completing the demolding process. This design effectively prevents damage to the sand core during demolding and subsequent handling due to uneven or improper stress. It is suitable for harsh working environments with lots of sand and soil, fully meeting the molding and demolding needs of large-size sand cores. Furthermore, the entire operation is simple, easy to understand, and highly practical.

[0029] Example 2: This example aims to address the problem that when dealing with large sand boxes, the device requires additional handling equipment to adjust its working position, resulting in cumbersome and inefficient operation that is difficult to adapt to actual workshop needs. This example is an improvement upon Example 1. For details, please refer to... Figure 4 - Figure 5 The support leg 2 is provided with a moving component 9. The moving component 9 includes a cavity 91 opened in the support leg 2. An electric actuator 92 is fixed in the cavity 91. A U-shaped block 93 is fixed at the output end of the electric actuator 92. A support shaft 94 is fixed in the U-shaped block 93. A roller 95 rotates on the support shaft 94. The U-shaped block 93 slides in contact with the cavity 91.

[0030] In this embodiment: When the device needs to be moved, the electric actuator 92 inside the cavity 91 of the support leg 2 is activated. The electric actuator 92 pushes the U-shaped block 93 downward until the roller 95 on the support shaft 94 inside the U-shaped block 93 contacts the ground and supports the entire device. At this time, the device can be easily moved by the rolling of the roller 95. After adjusting to a suitable working position, the electric actuator 92 is controlled to retract, and the U-shaped block 93 drives the roller 95 back into the cavity 91. The support leg 2 re-contacts the ground, and the device is then fixed by the ground cone 4 to ensure stability during operation.

[0031] The design of the mobile component 9 eliminates the need for additional handling equipment, making it simple and convenient to operate. It is suitable for situations where the sand box is large, reducing the difficulty of moving the device within the workshop and further improving the device's practicality and operational efficiency. At the same time, it maintains the characteristics of low manufacturing cost and simple maintenance, meeting the actual operational needs of the workshop.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A large-size sand core demolding device, comprising a U-shaped base (1) and a wooden sand box (6), characterized in that: The bottom surface of the U-shaped base (1) is fixed with multiple legs (2), the outer wall of the U-shaped base (1) is fixed with a horizontal plate (3), the horizontal plate (3) is threaded with a ground cone (4), the U-shaped base (1) is provided with a fixing component (5), the wooden sand box (6) is formed with a sand core body (7), the sand core body (7) is installed with a hook (8), and the legs (2) are provided with a moving component (9).

2. The large-size sand core demolding device according to claim 1, characterized in that: The fixing component (5) includes a telescopic rod (51) fixed to the inner wall of the U-shaped seat (1). A clamp (52) is fixed to the end side of the telescopic rod (51). There are two telescopic rods (51) symmetrically arranged about the central axis of the clamp (52). The clamp (52) is in contact with the outer wall of the wooden sand box (6).

3. The large-size sand core demolding device according to claim 2, characterized in that: The clamp (52) has a screw (53) rotating on its end side. The screw (53) is threadedly installed with the U-shaped seat (1). A rocker wheel (54) is fixed on the end side of the screw (53).

4. The large-size sand core demolding device according to claim 1, characterized in that: The moving component (9) includes a cavity (91) opened in the support leg (2), an electric actuator (92) is fixed in the cavity (91), a U-shaped block (93) is fixed at the output end of the electric actuator (92), a support shaft (94) is fixed in the U-shaped block (93), and a roller (95) rotates on the support shaft (94).

5. A large-size sand core demolding device according to claim 4, characterized in that: The U-shaped block (93) slides in contact with the cavity (91).

6. A large-size sand core demolding device according to claim 1, characterized in that: The hooks (8) are symmetrically arranged in multiples.

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