A lifting and stripping device for sand core molds

Abstract

The application relates to a lifting and demolding device of a sand core mold, which comprises a workbench for placing the mold and two groups of lifting assemblies for lifting an upper mold, the lifting assemblies are arranged at two sides of the mold to be demolded respectively, the lifting assembly comprises a lifting piece for lifting the upper mold and a lifting driving piece for driving the lifting piece to move vertically, and the lifting piece can be connected with the lower end of the upper mold. After the mold is placed on the workbench, the lifting piece moves upward to lift the upper mold for demolding, then the sand core can be taken out of the mold, and only the lifting assembly is needed during demolding, so that the space occupied by the equipment required for lifting the upper mold is reduced.

Description

Technical Field

[0001] This application relates to the technical field of molds, and in particular to a lifting and demolding device for a sand core mold. Background Technology

[0002] Sand core preparation is an important step in the casting process. Currently, sand cores are usually prepared by molding. After filling the mold with sand and compacting it, the core needs to be demolded to remove it from the mold.

[0003] When demolding sand cores of simple shapes, manual operation is usually carried out with the help of some auxiliary equipment, such as using a gantry crane to move the upper mold. However, such auxiliary equipment requires a large space for demolding, and it is difficult to use such auxiliary equipment when demolding sand cores in workshops with limited space.

[0004] Therefore, a new technical solution is needed to address the above problems. Utility Model Content

[0005] In order to reduce the space required for demolding sand cores, this application provides a lifting and demolding device for sand core molds.

[0006] The lifting and demolding device for a sand core mold provided in this application adopts the following technical solution: A lifting and demolding device for a sand core mold includes a worktable for placing the mold and two sets of lifting components for lifting the upper mold. The lifting components are respectively disposed on both sides of the mold to be demolded. Each lifting component includes a lifting member for lifting the upper mold and a lifting drive member for driving the lifting member to move vertically. The lifting member can be connected to the lower end of the upper mold.

[0007] By adopting the above technical solution, after the mold is placed on the worktable, the lifting component moves upward to lift the upper mold for demolding. Then the sand core can be removed from the mold. Demolding can be achieved by relying solely on the lifting component, thereby reducing the space occupied by the equipment required to lift the upper mold.

[0008] Optionally, a support member is provided on the side of the lifting member near the mold, and the support member can abut against the lower end of the upper mold.

[0009] By adopting the above technical solution, when lifting the upper mold, the support component abuts against the upper mold, thereby allowing the driving end of the lifting drive component to be set away from the upper mold, so that the lifting drive component will not come into contact with the upper mold during operation, and the lifting drive component is not easily affected during operation.

[0010] Optionally, the support member includes several rubber wheels arranged along the length of the lifting member, and the rubber wheels abut against the lower end of the upper mold.

[0011] By adopting the above technical solution, when the rubber wheel comes into contact with the upper mold, the rubber wheel can absorb part of the impact generated by the collision, making the surface of the upper mold less susceptible to damage.

[0012] Optional: The rubber wheel is rotatably connected to the lifting component.

[0013] By adopting the above technical solution, after the lifting component lifts the upper mold, the upper mold can be moved horizontally, so that the upper mold can be moved away from the lower mold. This makes it less likely for the sand core to be disturbed by the upper mold when it is removed from the lower mold, and makes the demolding process of the sand core more convenient.

[0014] Optionally: The lower end of the lifting component is fixed with several guide rods, which pass through the worktable and slide in cooperation with the worktable.

[0015] By adopting the above technical solution, during the vertical movement of the lifting component, the guide rod guides the movement of the lifting component, so that the lifting component will not rotate during the vertical movement, thereby enabling the lifting component to stably drive the upper mold to move.

[0016] Optionally, the worktable is further provided with a number of limiting components that limit the position of the guide rod. The limiting components include a limiting block and a limiting drive component that pushes the limiting block to move horizontally. The lower end of the limiting block abuts against the worktable, and the upper end of the limiting block can abut against the lower end of the guide rod after it has moved upward.

[0017] By adopting the above technical solution, after the lifting component raises the upper mold, the limiting block can be pushed to the lower end of the guide rod. The limiting block restricts the downward movement of the guide rod, so that the lifting component will not move downward when subjected to the downward pressure applied by the upper mold. This ensures that the upper mold can remain in the lifted state after being lifted, thus guaranteeing the safety of the personnel demolding the sand core.

[0018] Optionally, the lifting member is further provided with anti-detachment blocks at both ends to prevent the upper mold from detaching from the support member. The anti-detachment blocks can abut against the side wall of the upper mold on the support member.

[0019] By adopting the above technical solution, the movement of the upper mold and the lifting component is limited by the anti-detachment block, so that the upper mold will not fall off the lifting component, the lifting process of the upper mold by the lifting component remains stable, and the lifting of the upper mold is safer.

[0020] Optionally: The lower end of the anti-detachment block is provided with a sliding groove, the sliding groove is fitted onto the lifting member and slides along the lifting member, and the end of the anti-detachment block away from the adjacent lifting component is also threaded with a fastening bolt, the fastening bolt can abut against the side wall of the lifting member away from the support member.

[0021] By adopting the above technical solution, when it is not necessary to move the upper mold, the position of the anti-detachment block can be adjusted so that the anti-detachment block keeps in contact with the upper mold, so that the upper mold will not move horizontally after being lifted, making the subsequent mold closing of the upper and lower molds more convenient.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. After the mold is placed on the worktable, the lifting component moves upward to lift the upper mold for demolding. Then the sand core can be removed from the mold. Demolding can be achieved by relying solely on the lifting component, thereby reducing the space occupied by the equipment required to lift the upper mold. 2. After the lifting component raises the upper mold, the limiting block can be pushed to the lower end of the guide rod. The limiting block restricts the downward movement of the guide rod, so that the lifting component will not move downward when subjected to the downward pressure applied by the upper mold. This ensures that the upper mold can remain in the lifted state after being lifted, thus guaranteeing the safety of the personnel demolding the sand core. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an embodiment of this application.

[0024] In the diagram, 1 is the workbench; 11 is the mounting base; 2 is the lifting assembly; 21 is the lifting component; 22 is the lifting drive component; 23 is the rubber wheel; 24 is the guide rod; 3 is the limiting assembly; 31 is the limiting block; 32 is the limiting drive component; 4 is the anti-detachment block; 41 is the sliding groove; and 42 is the fastening bolt. Detailed Implementation

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

[0026] This application discloses a lifting and demolding device for a sand core mold, such as... Figure 1As shown, the system includes a worktable 1 for placing the mold and two sets of lifting assemblies 2 for lifting the upper mold. The two sets of lifting assemblies 2 are respectively disposed above the worktable 1 and on both sides of the mold to be demolded. Each lifting assembly 2 includes a lifting member 21 for lifting the upper mold and a lifting drive member 22 for driving the lifting member 21 to move vertically. Two sets of mounting seats 11 for mounting the lifting assemblies 2 are installed at the upper end of the worktable 1. The sides of the two mounting seats 11 that are far apart from each other are open. In this embodiment, the lifting drive member 22 is a hydraulic cylinder. The lifting drive member 22 is installed on the top wall of the inner cavity of the mounting seat 11. The driving end of the lifting drive member 22 passes through the mounting seat 11 and is fixedly installed to the lower end of the lifting member 21, thereby driving the lifting member 21 to move vertically. The lifting member 21 is arranged in a horizontal plate shape, and the lifting members 21 of the two sets of lifting assemblies 2 are parallel to each other. Several support members are installed on the side walls of the two sets of lifting components 21 that are close to each other. The support members can abut against the lower end of the mold base of the upper mold. Then, the upper mold is driven to move upward by the lifting drive component 22 to realize the demolding of the upper mold and the mold core.

[0027] The support component includes several rubber wheels 23, which are rotatably connected to the lifting component 21. In this embodiment, the rubber wheels 23 are made of wear-resistant rubber. The rubber wheels 23 are arranged along the length of the lifting component 21. When the rubber wheels 23 abut against the mold base and drive the mold base to move upward, the contact between the rubber wheels 23 and the mold base is cushioned by the rubber wheels 23, thus preventing damage to the mold base. Furthermore, after the upper mold moves upward, it can be removed from above the mold core, making the removal of the mold core less obstructed by the upper mold and facilitating the demolding process.

[0028] To ensure the stability of the lifting component 21 during vertical movement, two guide rods 24 are fixedly installed at the lower end of each lifting component 21. The two guide rods 24 are respectively positioned on both sides of the lifting drive component 22, with their lower ends passing through the mounting base 11 and slidingly engaging with it. The guide rods 24 guide the vertical movement of the lifting component 21, preventing horizontal rotation and wobbling during vertical movement, thus making the lifting process of the upper mold more stable.

[0029] Because the upper mold is quite heavy after being lifted, if the lifting drive component 22 is damaged, the upper mold will press the lifting component 21 downwards, potentially endangering the demolding workers. Therefore, the worktable 1 is also equipped with four sets of limiting components 3 that respectively limit the position of the guide rods 24. Each limiting component 3 corresponds to one guide rod 24. The limiting component 3 includes a limiting block 31 and a limiting drive component 32 for pushing the limiting block 31 to move horizontally. The limiting block 31 is slidably disposed in the mounting base 11, with its lower end abutting against the bottom surface of the inner cavity of the mounting base 11, and its upper end abutting against the lower end of the guide rod 24 after it has been lifted upwards, thereby limiting the downward movement of the guide rod 24. In this embodiment, the limiting drive component 32 is a hydraulic cylinder. The limiting drive component 32 is installed within the mounting base 11, and its driving end is fixedly mounted to the side wall of the limiting block 31, thereby pushing the limiting block 31 to move to or away from the lower end of the guide rod 24. After the guide rod 24 moves upward, the limiting block 31 can be pushed below the guide rod 24, thus limiting the downward movement of the guide rod 24 and ensuring the upper mold maintains a stable, lifted state.

[0030] Both ends of the lifting member 21 are respectively provided with anti-detachment blocks 4 to prevent the upper mold from detaching from the support member. The lower end of the anti-detachment block 4 is provided with a sliding groove 41, which is sleeved on the upper end of the lifting member 21 and can slide along the length of the lifting member 21. The end of the anti-detachment block 4 away from the adjacent lifting component 2 is threaded with a horizontally arranged fastening bolt 42. The fastening bolt 42 can abut against the side wall of the lifting member 21 away from the support member, thereby limiting the position of the anti-detachment block 4 on the lifting member 21. The anti-detachment block 4 can abut against the mold base side wall on the support member, thereby limiting the position of the upper mold on the lifting member 21, so that the upper mold can be kept in a non-horizontal state when being lifted, or can not fall off the lifting member 21 when moving horizontally. The anti-detachment block 4 can also limit the position of the upper mold when resetting, so that the upper mold can be aligned when closing with the lower mold.

[0031] The implementation principle of this embodiment is as follows: the mold is placed on the workbench 1 and the rubber wheel 23 is located below the mold base. The anti-detachment block 4 is installed on the lifting member 21 and the anti-detachment block 4 abuts against the mold base. The lifting drive member 22 pushes the lifting member 21 upward to separate the upper mold from the lower mold. After the upper mold is lifted into place, the limit drive member 32 pushes the limit block 31 to move below the guide rod 24, and then the sand core demolding operation is performed.

[0032] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A lifting and demolding device for a sand core mold, characterized in that: It includes a worktable (1) for placing the mold and two sets of lifting components (2) for lifting the upper mold. The lifting components (2) are respectively set on both sides of the mold to be demolded. The lifting components (2) include a lifting member (21) for lifting the upper mold and a lifting drive member (22) for driving the lifting member (21) to move vertically. The lifting member (21) can be connected to the lower end of the upper mold.

2. The lifting and demolding device for a sand core mold according to claim 1, characterized in that: The lifting member (21) is also provided with a support member on the side near the mold, and the support member can abut against the lower end of the upper mold.

3. The lifting and demolding device for a sand core mold according to claim 2, characterized in that: The support includes several rubber wheels (23), which are arranged along the length of the lifting member (21) and abut against the lower end of the upper mold.

4. The lifting and demolding device for a sand core mold according to claim 3, characterized in that: The rubber wheel (23) is rotatably connected to the lifting member (21).

5. The lifting and demolding device for a sand core mold according to claim 1, characterized in that: The lower end of the lifting member (21) is fixed with several guide rods (24), which pass through the workbench (1) and slide in cooperation with the workbench (1).

6. The lifting and demolding device for a sand core mold according to claim 5, characterized in that: The workbench (1) is also provided with a number of limiting components (3) that limit the position of the guide rod (24). The limiting component (3) includes a limiting block (31) and a limiting drive (32) that pushes the limiting block (31) to move horizontally. The lower end of the limiting block (31) abuts against the workbench (1), and the upper end of the limiting block (31) can abut against the lower end of the guide rod (24) after it moves upward.

7. The lifting and demolding device for a sand core mold according to claim 2, characterized in that: The lifting member (21) is also provided with anti-detachment blocks (4) at both ends to prevent the upper mold from detaching from the support member. The anti-detachment blocks (4) can abut against the side wall of the upper mold on the support member.

8. The lifting and demolding device for a sand core mold according to claim 7, characterized in that: The lower end of the anti-detachment block (4) is provided with a sliding groove (41). The sliding groove (41) is fitted onto the lifting member (21) and slides along the lifting member (21). The end of the anti-detachment block (4) away from the adjacent lifting component (2) is also threaded with a fastening bolt (42). The fastening bolt (42) can abut against the side wall of the lifting member (21) away from the support member.

Images