A high-toughness, extrusion-resistant, weight-bearing salt core prefabricated mold

Abstract

The utility model discloses a high-toughness, extrusion-resistant, weight-bearing salt core preform mold, comprising a bracket, an outer layer is installed on the upper surface of the bracket, and an inner layer is fixedly installed on the inner wall surface of the outer layer, the outer layer is connected with a pressure-resistant structure, the pressure-resistant structure can make the buffer bag of the inner layer expand and resist pressure through a pressure rod under pressure, the pressure-resistant structure includes a pressure-resistant block, the pressure-resistant block is set as a circular ring structure, and the pressure-resistant blocks are fixedly installed on the inner wall surface of the outer layer at equal intervals, and the inner wall bottom surface of the inner layer is installed with an air bag. The high-toughness, extrusion-resistant, weight-bearing salt core preform mold is provided with a weighting structure to pressurize the molten salt melt through the protruding part of the lower surface of the pressure plate, and then the pressure ring is used to weight the molten salt melt again through the connecting rod, and a pressure-resistant structure is also provided, and the expansion of the buffer bag in the inner layer interlayer forms a certain resistance with the pressure of the pressure ring.

Description

Technical Field

[0001] The utility model relates to the technical field of salt core prefabricated component molds, in particular to a high-toughness, extrusion-resistant, load-bearing salt core prefabricated component mold. Background Art

[0002] By applying water-soluble salt cores in the high-pressure casting process, castings with complex inner cavity structures can be formed. The salt cores can be removed by water dissolution. Water-soluble salt cores refer to cores made of water-soluble alkali metal salts. After the casting is completed, the cores are washed with high-temperature and high-pressure water to complete the cleaning of the casting. Compared with the sand cores currently widely used in sand molds and low-pressure casting, water-soluble salt cores have many advantages such as high strength, good surface quality, and no gas generation. The surface quality of the casting is good, and the water-soluble salt cores are easy to remove, with less pollution to the environment and no damage to the casting during cleaning.

[0003] At present, the preparation methods of water-soluble salt cores mainly include casting, pressing and sintering, and ceramic molds, and have been applied in actual casting production. The high-pressure casting method is similar to the high-pressure casting of aluminum-magnesium alloys. First, the molten salt melt is poured into the mold. Under the push of the piston, it enters the mold at high speed and then solidifies under pressure. After the mold is opened, the salt core casting is taken out, and the salt core can be obtained after the casting system is taken out. The advantage of the high-pressure casting method for producing salt cores is that the filling and holding pressures can be accurately controlled, and a cooling system is applied to the mold to control solidification, thereby obtaining a high-quality salt core, so a high-toughness and extrusion-resistant salt core mold is required. Utility Model Content

[0004] The utility model aims to provide a high-toughness, extrusion-resistant, weight-bearing salt core prefabricated component mold to solve the problem that the salt core mold needs to withstand pressure to solidify as mentioned in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-toughness, extrusion-resistant, load-bearing salt core preform mold, comprising a bracket, an outer layer is installed on the upper surface of the bracket, and also includes an inner layer, the inner layer is fixedly installed on the inner wall surface of the outer layer, and the outer layer is connected to a pressure-resistant structure, and the pressure-resistant structure can expand the buffer bag of the inner layer to resist pressure through a pressure rod under pressure.

[0006] Preferably, the pressure-resistant structure includes pressure-resistant blocks, which are arranged in a circular ring structure and are fixedly installed at equal intervals on the inner wall surface of the outer layer's interlayer. An airbag is installed on the bottom surface of the inner wall of the inner layer, and a pressure rod is fixedly connected to the upper surface of the airbag. The upper end of the pressure rod slides through the upper surface of the inner layer, and an air pipe is connected to the lower surface of the airbag, and the other end of the air pipe penetrates the lower surface of the buffer bag, and the buffer bag is fixedly installed on the inner wall surface of the inner layer's interlayer.

[0007] By adopting the above technical solution, the inner layer and the outer layer can withstand more pressure through the pressure-resistant structure.

[0008] Preferably, the air pipe is configured as a U-shaped structure.

[0009] The adoption of the technical solution facilitates the airflow to enter the buffer bag.

[0010] Preferably, the bracket is also connected to a weighting structure, and the weighting structure can control the connecting rod to increase the weight and squeeze the pressure ring.

[0011] By adopting the above technical solution, the weighted structure can enable the pressure ring to provide pressure to the molten salt melt.

[0012] Preferably, the weighting structure includes cylinder one, which is fixedly mounted on the upper surface of the bracket, and the lower end of the piston rod of cylinder one is fixedly connected to a pressure plate, and cylinder two is fixedly mounted on the upper surface of the pressure plate, and the lower end of the piston rod of cylinder two is fixedly connected to a connecting rod, and the lower end of the connecting rod slides through the lower surface of the pressure plate, and the lower surface of the connecting rod is fixedly connected to a pressure ring.

[0013] By adopting the above technical solution, the connecting rod can press the pressure ring through cylinder 2.

[0014] Preferably, a groove is provided on the lower surface of the pressure plate, and the groove corresponds to the inner layer.

[0015] The above technical solution makes it easier for the pressure plate to press the molten metal between the inner layer and the outer layer downward.

[0016] Preferably, the pressure ring is configured as a circular ring structure, and the bottom of the pressure ring corresponds to the empty groove formed between the outer layer and the inner layer.

[0017] The adoption of the technical solution facilitates the downward movement of the pressure ring.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the high-toughness, extrusion-resistant, load-bearing salt core prefabricated mold:

[0019] 1. The high-toughness, extrusion-resistant, weighted salt core preform mold is provided with a weighting structure. When the molten salt melt is poured between the outer layer and the inner layer, the cylinder is opened to move the pressure plate downward, and then the protruding part of the lower surface of the pressure plate is embedded between the outer layer and the inner layer to pressurize the molten salt melt;

[0020] 2. Further, the second cylinder is opened, and the second cylinder will press the connecting rod downward, and the connecting rod slides downward through the lower surface of the pressure plate, so that the connecting rod pushes the pressure ring downward, so that the pressure ring adds weight to the molten salt melt again to solidify it;

[0021] 3. Furthermore, a pressure-resistant structure is provided. When the weighted structure pressurizes the molten salt melt, the pressure-resistant blocks in the outer interlayer will bear lateral pressure. At the same time, the pressure rod presses the airbag to expand the buffer bag, thereby increasing the pressure resistance of the inner layer and forming a certain resistance to the pressure of the pressure ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the shaft side surface structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the front cross-section structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the outer axial side section structure of the utility model;

[0025] Figure 4 It is a schematic diagram of the axial side surface structure of the pressure plate of the utility model.

[0026] In the figure: 1. bracket; 2. outer layer; 3. inner layer; 4. anti-pressure block; 5. pressure rod; 6. air bag; 7. air pipe; 8. buffer bag; 9. cylinder one; 10. pressure plate; 11. cylinder two; 12. connecting rod; 13. pressure ring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-4 The utility model provides a technical solution: a high-toughness and extrusion-resistant load-bearing salt core prefabricated component mold, including a bracket 1, an outer layer 2, an inner layer 3, a compression block 4, a pressure rod 5, an air bag 6, an air pipe 7, a buffer bag 8, a cylinder 1 9, a pressure plate 10, a cylinder 2 11, a connecting rod 12, and a pressure ring 13.

[0029] Example 1

[0030] The high-toughness, extrusion-resistant, weight-bearing salt core preform mold is provided with a weighting structure, which can pressurize the salt melt by pressing the pressure ring 13 through the connecting rod 12, specifically:

[0031] An outer layer 2 is installed on the upper surface of the bracket 1, and also includes an inner layer 3. The inner layer 3 is fixedly installed on the inner wall surface of the outer layer 2. The bracket 1 is also connected to a weighting structure, which can control the connecting rod 12 to make the pressure ring 13 heavier and squeezed. The weighting structure includes a cylinder 9, which is fixedly installed on the upper surface of the bracket 1, and the lower end of the piston rod of the cylinder 9 is fixedly connected to a pressure plate 10, and the upper surface of the pressure plate 10 is fixedly installed with a cylinder 2 11, and the lower end of the piston rod of the cylinder 2 11 is fixedly connected to a connecting rod 12, and the lower end of the connecting rod 12 slides through the lower surface of the pressure plate 10, and the lower surface of the connecting rod 12 is fixedly connected to a pressure ring 13, and the lower surface of the pressure plate 10 is provided with a groove, which corresponds to the inner layer 3, and the pressure ring 13 is set as a circular ring structure, and the bottom of the pressure ring 13 corresponds to the empty groove formed between the outer layer 2 and the inner layer 3;

[0032] When the high-toughness, extrusion-resistant, weight-bearing salt core preform mold is used, Figure 1 As shown, first, the salt melt is poured between the outer layer 2 and the inner layer 3, and then the cylinder 9 on the upper surface of the bracket 1 is opened, so that the piston rod of the cylinder 9 pushes the pressure plate 10 downward, as shown in FIG. Figure 2 As shown, when the pressure plate 10 moves downward, the groove on the lower surface of the pressure plate 10 will embed the upper end of the inner layer 3, and the protruding part of the lower surface of the pressure plate 10 will be embedded between the outer layer 2 and the inner layer 3 to pressurize the salt melt, and then the cylinder 11 will be opened, and the piston rod of the cylinder 11 will push the connecting rod 12 downward. A pressure ring 13 is fixedly connected to the lower surface of the connecting rod 12, so that the connecting rod 12 slides through the lower surface of the pressure plate 10, and then pushes the pressure ring 13 downward to weight the salt melt between the outer layer 2 and the inner layer 3.

[0033] Example 2

[0034] The high-toughness, extrusion-resistant, weight-bearing salt core preform mold is also provided with a compression-resistant structure, which enables the outer layer 2 and the inner layer 3 to resist pressure through the compression-resistant block 4 and the buffer capsule 8, specifically:

[0035] The outer layer 2 is connected with a pressure-resistant structure, which can expand the buffer bag 8 of the inner layer 3 to resist pressure through the pressure rod 5 under pressure. The pressure-resistant structure includes a pressure-resistant block 4, which is set as a circular ring structure, and the pressure-resistant block 4 is fixedly installed on the inner wall surface of the sandwich layer of the outer layer 2 at equal intervals. An air bag 6 is installed on the bottom surface of the inner wall of the inner layer 3, and the upper surface of the air bag 6 is fixedly connected with the pressure rod 5. The upper end of the pressure rod 5 slides through the upper surface of the inner layer 3, and the lower surface of the air bag 6 is connected with an air pipe 7, and the other end of the air pipe 7 penetrates the lower surface of the buffer bag 8. The buffer bag 8 is fixedly installed on the inner wall surface of the sandwich layer of the inner layer 3, and the air pipe 7 is set as a U-shaped structure.

[0036] When the pressure plate 10 is downwardly loaded with weight on the salt melt between the outer layer 2 and the inner layer 3, as shown in FIG. Figure 3As shown, the lower surface of the pressure plate 10 will press the pressure rod 5, causing the pressure rod 5 to slide downward on the upper surface of the inner layer 3, and then the lower end of the pressure rod 5 will press the airbag 6, causing the air flow inside the airbag 6 to enter the air pipe 7 connected to the lower surface, and then the air flow enters the buffer bag 8 through the other end of the air pipe 7, causing the buffer bag 8 in the interlayer of the inner layer 3 to expand, and then the expansion force of the buffer bag 8 and the force of the pressure ring 13 squeezing the salt melt are counteracted, so that the pressure resistance of the inner layer 3 of the mold is increased. At the same time, there is a certain empty layer between the pressure-resistant blocks 4 arranged inside the interlayer of the outer layer 2, which can withstand a certain pressure, so that the toughness of the mold is higher.

[0037] Working principle: When using the high-toughness, extrusion-resistant, weighted salt core preform mold, a weighting structure is provided to control the connecting rod 12 to push the pressure ring 13 downward to pressurize the salt melt. A pressure-resistant structure is also provided to resist the pressure of the outer layer 2 and the inner layer 3 through the pressure-resistant block 4 and the buffer bag 8, thereby increasing the overall practicality.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-toughness, extrusion-resistant, weight-bearing salt core preform mold, comprising a support (1), an outer layer (2) being mounted on the upper surface of the support (1), characterized in that: It also includes an inner layer (3), the inner layer (3) is fixedly mounted on the inner wall surface of the outer layer (2), the outer layer (2) is connected to a pressure-resistant structure, and the pressure-resistant structure can expand the buffer bag (8) of the inner layer (3) to resist pressure through the pressure rod (5) when pressurized.

2. The high-toughness, extrusion-resistant, weight-bearing salt core preform mold according to claim 1 is characterized in that: The pressure-resistant structure comprises a pressure-resistant block (4), which is arranged in a circular ring structure and is fixedly installed at equal intervals on the inner wall surface of the sandwich layer of the outer layer (2); an air bag (6) is installed on the inner wall bottom surface of the inner layer (3), and the upper surface of the air bag (6) is fixedly connected to a pressure rod (5); the upper end of the pressure rod (5) slides through the upper surface of the inner layer (3); the lower surface of the air bag (6) is connected to an air pipe (7), and the other end of the air pipe (7) passes through the lower surface of a buffer bag (8); and the buffer bag (8) is fixedly installed on the inner wall surface of the sandwich layer of the inner layer (3).

3. The high-toughness, extrusion-resistant, weight-bearing salt core preform mold according to claim 2 is characterized in that: The air pipe (7) is configured as a U-shaped structure.

4. The high-toughness, extrusion-resistant, weight-bearing salt core preform mold according to claim 1 is characterized in that: The support (1) is also connected to a weighting structure, and the weighting structure can control the connecting rod (12) so that the pressure ring (13) is weighted and squeezed.

5. The high-toughness, extrusion-resistant, weight-bearing salt core preform mold according to claim 4, characterized in that: The weighting structure comprises a cylinder one (9), wherein the cylinder one (9) is fixedly mounted on the upper surface of the bracket (1), and the lower end of the piston rod of the cylinder one (9) is fixedly connected to a pressure plate (10), and the upper surface of the pressure plate (10) is fixedly mounted with a cylinder two (11), and the lower end of the piston rod of the cylinder two (11) is fixedly connected to a connecting rod (12), and the lower end of the connecting rod (12) slides through the lower surface of the pressure plate (10), and the lower surface of the connecting rod (12) is fixedly connected to a pressure ring (13).

6. The high-toughness, extrusion-resistant, weight-bearing salt core preform mold according to claim 5, characterized in that: The lower surface of the pressure plate (10) is provided with a groove, which corresponds to the inner layer (3).

7. The high-toughness, extrusion-resistant, weight-bearing salt core preform mold according to claim 5, characterized in that: The pressure ring (13) is configured as a circular ring structure, and the bottom of the pressure ring (13) corresponds to the empty groove formed between the outer layer (2) and the inner layer (3).

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