Large brake disc sand core casting tool

Abstract

The utility model provides a large brake disc sand core casting tool which comprises a lower die and an upper die arranged on the lower die and further comprises a plurality of filling assemblies penetrating through the side portion of the lower die in a sliding mode, an open groove is formed in the side portion of the lower die, and each filling assembly comprises a filling block penetrating through the open groove in a sliding mode and an air cylinder connected with one end of the filling block. A bearing assembly is arranged on the side portion of the lower mold, the air cylinder is arranged on the bearing assembly, the upper mold is provided with a core shooting hole, the lower mold is provided with a mold ejecting rod used for ejecting out a sand core, a fixing plate is arranged at one end of the filling block, one side of the fixing plate is connected with the filling block, the telescopic end of the air cylinder is connected with a flange plate, and the flange plate is connected with the other side of the fixing plate. According to the large-scale brake disc sand core casting tool, due to the arrangement of the filling assembly, on one hand, the weight of a brake disc sand core is reduced, on the other hand, after the filling block is pulled out, the brake disc sand core and the lower die are separated more conveniently and rapidly, and the production efficiency of the brake disc sand core is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of brake discs, in particular to a large-scale brake disc sand core casting tool. Background Art

[0002] Brake discs are key brake parts on cars, so the quality of castings is required to be high. Due to the requirements of their performance, the sand core of the brake disc is often made by the process of coated sand. The surface of the sand grains of coated sand is covered with a layer of solid resin film before molding. There are two coating processes: cold method and hot method. The cold method uses ethanol to dissolve the resin, and adds urotropine during the sand mixing process, so that the two are coated on the surface of the sand grains. The ethanol evaporates to obtain coated sand; the hot method preheats the sand to a certain temperature, adds resin to melt it, stirs to coat the resin on the surface of the sand grains, adds urotropine aqueous solution and lubricant, cools, crushes, and sieves to obtain coated sand, which is used for casting steel and iron parts. When large brake discs need to be made, coated sand is often used to make brake disc sand cores.

[0003] However, due to the large size and heavy weight of large brake disc sand cores, it is difficult to remove the sand cores from the mold, resulting in low production efficiency of brake disc sand cores. This solution solves this technical problem. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a large brake disc sand core casting tooling, which reduces the weight of the brake disc sand core by setting a filling component, makes the removal of the brake disc sand core more convenient and quick, and improves the production efficiency of the brake disc sand core.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a large brake disc sand core casting tool, including a lower mold, an upper mold arranged on the lower mold, and also including a plurality of filling components sliding through the side of the lower mold, the side of the lower mold is provided with an open groove, the filling component includes a filling block sliding through the open groove, a cylinder connected to one end of the filling block, the side of the lower mold is provided with a bearing component, the cylinder is arranged on the bearing component, the upper mold is provided with a core shooting hole, and the lower mold is provided with a ejector rod for ejecting the sand core.

[0006] A fixing plate is provided at one end of the filling block, one side of the fixing plate is connected to the filling block, and a flange is connected to the telescopic end of the cylinder, and the flange is connected to the other side of the fixing plate.

[0007] The bearing assembly includes a bearing plate with one end horizontally arranged on the side of the lower mold, a positioning plate connected to the other end of the bearing plate, the fixing plate is slidably arranged on the bearing plate, and the cylinder is arranged on the positioning plate.

[0008] A pressing plate is arranged on the top side of the opening groove, the top side of the pressing plate is detachably in close contact with the upper mold, and the bottom side of the pressing plate is in sliding contact with the top side of the filling block.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] (1) The setting of the filling assembly reduces the weight of the brake disc sand core on the one hand, and on the other hand, when the filling block is pulled out, the separation of the brake disc sand core from the lower mold is more convenient and quick, thereby improving the production efficiency of the brake disc sand core;

[0011] (2) By setting the bearing plate, on the one hand, it supports the fixed plate, making the movement of the filling block more stable, thereby improving the production quality of the brake disc sand core; on the other hand, it connects the positioning plate and the lower mold, and has a multifunctional effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0013] Figure 2 It is a structural schematic diagram of the filling component of the utility model.

[0014] Figure 3 It is a schematic diagram of the overall structure of the load-bearing assembly of the utility model.

[0015] Figure 4 It is a structural schematic diagram of a brake disc sand core of the utility model.

[0016] Among them, in the figure: 1, lower mold; 11, opening groove; 2, upper mold; 3 filling assembly; 31, filling block; 32, cylinder; 33, fixing plate; 34, flange; 4, bearing assembly; 41, bearing plate; 42, positioning plate; 5, pressure plate; 6, sand core. DETAILED DESCRIPTION

[0017] In order to more clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0018] See also Figure 1-Figure 4 A large brake disc sand core casting tool comprises a lower mold 1, an upper mold 2 arranged on the lower mold 1, and also comprises a plurality of filling components 3 slidingly passing through the side of the lower mold 1, an open groove 11 is opened on the side of the lower mold 1, the filling component 3 comprises a filling block 31 slidingly passing through the open groove 11, and a cylinder 32 connected to one end of the filling block 31, a bearing component 4 is arranged on the side of the lower mold 1, the cylinder 32 is arranged on the bearing component 4, the upper mold 2 is provided with a core shooting hole, and the lower mold 1 is provided with a ejector rod for ejecting the sand core 6.

[0019] A fixing plate 33 is provided at one end of the filling block 31 , one side of the fixing plate 33 is connected to the filling block 31 , and a flange 34 is connected to the telescopic end of the cylinder 32 , and the flange 34 is connected to the other side of the fixing plate 33 .

[0020] The bearing assembly 4 includes a bearing plate 41 with one end horizontally arranged on the side of the lower mold 1, a positioning plate 42 connected to the other end of the bearing plate 41, the fixing plate 33 is slidably arranged on the bearing plate 41, and the cylinder 32 is arranged on the positioning plate 42.

[0021] A pressing plate 5 is disposed on the top side of the opening groove 11 . The top side of the pressing plate 5 is detachably in close contact with the upper mold 2 , and the bottom side of the pressing plate 5 is in sliding contact with the top side of the filling block 31 .

[0022] The specific working process of this utility model:

[0023] The filling block 31 is pushed into the lower mold 1 by the cylinder 32, the upper mold 2 is combined with the lower mold 1, and then a core shooting machine is used to shoot a core from the core shooting hole inside the lower mold 1 to form a brake disc sand core 6. After the sand core 6 is cooled, the filling block 31 is pulled out of the lower mold 1 by the cylinder 32, and then the brake disc sand core 6 is ejected by the ejector rod to complete the production of the brake disc sand core 6. Finally, the brake disc sand core 6 is placed in the mold for casting to complete the production of the brake disc.

[0024] The core shooting hole and the top film rod are realized by using the existing technology, which is common knowledge for those skilled in the art and is not shown in the drawings.

[0025] By setting the filling assembly, on the one hand, the weight of the brake disc sand core 6 is reduced, and on the other hand, when the filling block 31 is withdrawn, the separation of the brake disc sand core 6 and the lower mold 1 is more convenient and quick, thereby improving the production efficiency of the brake disc sand core 6;

[0026] The supporting plate 41 can support the fixing plate 33 on the one hand, so that the movement of the filling block 31 is more stable; and can connect the positioning plate 42 and the lower mold 1 on the other hand, thus having a multifunctional effect.

[0027] Technical features not described in the present invention can be achieved through or by adopting existing technologies, and will not be elaborated here. Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A large brake disc sand core casting tool, comprising a lower die (1) and an upper die (2) arranged on the lower die (1), characterized in that: The present invention also comprises a plurality of filling components (3) which are slidably passed through the side of the lower mold (1); an open groove (11) is provided on the side of the lower mold (1); the filling components (3) comprise a filling block (31) which is slidably passed through the open groove (11); and a cylinder (32) which is connected to one end of the filling block (31); a bearing component (4) is provided on the side of the lower mold (1); the cylinder (32) is arranged on the bearing component (4); the upper mold (2) is provided with a core shooting hole; and the lower mold (1) is provided with a mold ejector rod for ejecting a sand core (6).

2. The large brake disc sand core casting tool according to claim 1, characterized in that: A fixing plate (33) is provided at one end of the filling block (31), one side of the fixing plate (33) is connected to the filling block (31), and a flange (34) is connected to the telescopic end of the cylinder (32), and the flange (34) is connected to the other side of the fixing plate (33).

3. The large brake disc sand core casting tool according to claim 2, characterized in that: The bearing assembly (4) comprises a bearing plate (41) with one end horizontally arranged on the side of the lower mold (1), and a positioning plate (42) connected to the other end of the bearing plate (41); the fixing plate (33) is slidably arranged on the bearing plate (41); and the cylinder (32) is arranged on the positioning plate (42).

4. The large brake disc sand core casting tool according to claim 3 is characterized in that: A pressing plate (5) is provided on the top side of the opening groove (11), the top side of the pressing plate (5) is detachably in close contact with the upper mold (2), and the bottom side of the pressing plate (5) is in sliding contact with the top side of the filling block (31).

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